/* Harmonia 2 — mobile-first foundation. Base styles target a phone; desktop is the
   @media enhancement. No bolt-on mobile.css layer, no per-page stylesheet pile. */

/* ---------- design tokens ---------- */
:root {
  --bg:#0b0b12; --panel:#15151f; --panel-2:#1c1c28; --line:#2a2a38;
  --text:#f3f3f8; --muted:#9a9ab2; --brand:#8b5cf6; --brand-2:#a855f7; --brand-rgb:139,92,246; --brand2-rgb:168,85,247;
  --green:#22c55e; --red:color-mix(in srgb,#ef4444 54%,var(--brand,#ef4444)); --red-ink:color-mix(in srgb,#fecaca 70%,var(--brand-2,#fecaca)); --field:color-mix(in srgb,var(--brand,#8b5cf6) 7%,#0d0d15); --radius:16px; --radius-sm:11px;
  --rail-w:240px; --pad:16px; --shadow:0 18px 50px rgba(0,0,0,.45);
  --safe-b:env(safe-area-inset-bottom,0px);
  font-synthesis:none; -webkit-text-size-adjust:100%;
}
body{background-attachment:fixed}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;height:100%;overflow-x:hidden;max-width:100%;overscroll-behavior:none;color-scheme:dark}
body{
  background:radial-gradient(120% 80% at 100% 0,rgba(var(--brand-rgb),.14),transparent 45%),var(--bg);
  color:var(--text);font-family:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  font-size:16px;line-height:1.45;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
h1{font-size:1.5rem;font-weight:900;letter-spacing:-.02em;margin:.2em 0}
h2{font-size:1.15rem;font-weight:800;margin:.2em 0}
.h2-muted{color:var(--muted)}
.h2-eyebrow{color:var(--brand-2);text-transform:uppercase;letter-spacing:.12em;font-size:.7rem;font-weight:800;margin:0}

/* ---------- app frame: MOBILE first (stacked, bottom nav) ---------- */
#h2-app{min-height:100%;display:flex;flex-direction:column}
.h2-rail{display:none}                                   /* hidden on phones */
.h2-main{flex:1;display:flex;flex-direction:column;min-width:0;padding-bottom:calc(64px + var(--safe-b))}
.h2-topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;
  gap:12px;padding:14px var(--pad);background:rgba(11,11,18,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.h2-topbar-title{font-weight:900;font-size:1.05rem}
.h2-topbar-role{color:var(--muted);font-size:.8rem;text-transform:capitalize}
.h2-view{padding:var(--pad);max-width:1100px;width:100%;margin:0 auto}

/* bottom nav (mobile) */
.h2-bottomnav{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;
  padding-bottom:var(--safe-b);background:var(--rail-bg,rgba(16,16,24,.94));backdrop-filter:blur(12px);border-top:1px solid var(--line)}
.h2-bottomnav .h2-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:9px 2px;color:var(--muted);font-size:.66rem;font-weight:700}
.h2-bottomnav .h2-nav-item.active{color:#fff}
.h2-bottomnav .h2-nav-item.active .h2-nav-ico{color:var(--brand-2,#a855f7)}
.h2-bottomnav .h2-nav-ico{font-size:1.15rem;line-height:1}
/* bottomnav label nowrap: keep every item the same height (no squiggle) */
.h2-bottomnav .h2-nav-item{min-width:0;justify-content:flex-start}
.h2-bottomnav .h2-nav-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}

/* ---------- desktop enhancement ---------- */
@media (min-width:880px){
  #h2-app{flex-direction:row}
  .h2-bottomnav{display:none}
  .h2-main{padding-bottom:0}
  .h2-rail{display:flex;flex-direction:column;width:var(--rail-w);flex:0 0 var(--rail-w);
    height:100vh;position:sticky;top:0;background:var(--panel);border-right:1px solid var(--line);padding:18px 12px}
  .h2-brand{font-weight:900;font-size:1.2rem;padding:8px 10px 16px;letter-spacing:-.02em}
  .h2-rail-nav{display:flex;flex-direction:column;gap:4px;flex:1;overflow:auto;margin-right:-12px;padding-right:12px}
  .h2-rail .h2-nav-item{display:flex;align-items:center;gap:11px;padding:11px 12px;border-radius:var(--radius-sm);
    color:var(--muted);font-weight:700;font-size:.92rem}
  .h2-rail .h2-nav-item:hover{background:var(--panel-2);color:#fff}
  .h2-rail .h2-nav-item.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
  .h2-rail .h2-nav-ico{width:20px;text-align:center}
  .h2-rail-foot{border-top:1px solid var(--line);padding-top:12px;display:flex;flex-direction:column;gap:8px}
  .h2-acct{font-weight:800;font-size:.85rem}
  .h2-logout{color:var(--muted);font-size:.82rem}
}

/* ---------- components ---------- */
.h2-hero{margin-bottom:18px}
.h2-tilegrid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:560px){.h2-tilegrid{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.h2-tilegrid{grid-template-columns:1fr 1fr 1fr}}
.h2-tile{display:flex;align-items:center;gap:14px;padding:16px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);transition:transform .12s ease,border-color .12s ease}
.h2-tile:hover{transform:translateY(-2px);border-color:rgba(var(--brand-rgb),.5)}
.h2-tile-ico{width:42px;height:42px;display:grid;place-items:center;border-radius:12px;font-size:1.2rem;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;flex:0 0 auto}
.h2-tile h3{margin:0;font-size:1rem}.h2-tile p{margin:2px 0 0;font-size:.82rem}

.h2-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-top:16px}
.h2-formrow{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:10px}
.h2-formrow select,.h2-formrow input{background:var(--field);border:1px solid var(--line);color:#fff;border-radius:var(--radius-sm);padding:10px 12px;font-size:.9rem;min-width:0}
.h2-btn{border:0;border-radius:999px;padding:11px 18px;font-weight:800;cursor:pointer;color:#fff;background:var(--panel-2)}
.h2-btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand-2))}

.h2-cal-list{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.h2-cal-row{padding:11px 13px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--panel);font-size:.9rem;display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.h2-cal-row.open{border-left:3px solid var(--brand-2)}
.h2-cal-row.off{border-left:3px solid var(--red)}

.h2-stub,.h2-fatal{padding:40px 16px;text-align:center;color:var(--muted);border:1px dashed var(--line);border-radius:var(--radius);margin-top:16px}

/* toasts */
.h2-toasts{position:fixed;top:72px;right:16px;z-index:1100;display:flex;flex-direction:column;gap:8px;align-items:flex-end;max-height:calc(3 * 46px + 16px);overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;pointer-events:none}
.h2-toasts::-webkit-scrollbar{width:6px}.h2-toasts::-webkit-scrollbar-thumb{background:rgba(var(--brand-rgb),.5);border-radius:99px}
.h2-toast{position:relative;transform:translateY(-8px);z-index:1100;pointer-events:auto;flex:0 0 auto;
  background:var(--panel-2);border:1px solid var(--line);color:#fff;padding:11px 16px;border-radius:999px;
  font-weight:700;font-size:.86rem;opacity:0;transition:opacity .2s,transform .2s;box-shadow:var(--shadow)}
.h2-toast.show{opacity:1;transform:translateY(0)}
.h2-toast.err{border-color:rgba(239,68,68,.5);color:#fecaca}
@media(min-width:880px){.h2-toasts{top:72px;right:24px}}

@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* ---------- calendar grid + day modal ---------- */
.h2-cal-bar{display:flex;align-items:center;gap:10px;margin:6px 0 12px}
.h2-cal-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.h2-cal-dow{text-align:center;color:var(--muted);font-size:.66rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;padding-bottom:4px}
.h2-cal-cell{position:relative;min-height:54px;display:flex;flex-direction:column;align-items:flex-start;gap:3px;
  padding:6px;border:1px solid var(--line);border-radius:10px;background:var(--panel);color:var(--text);cursor:pointer}
.h2-cal-cell:hover{border-color:rgba(var(--brand-rgb),.5)}
.h2-cal-cell.out{opacity:.38}
.h2-cal-num{font-size:.78rem;font-weight:700}
.h2-dot{width:7px;height:7px;border-radius:50%;display:inline-block;flex:0 0 auto}
.h2-dot.green{background:var(--green)} .h2-dot.red{background:var(--red)} .h2-dot.blue{background:#38bdf8}
@media(min-width:880px){.h2-cal-cell{min-height:78px}}

.h2-check{display:flex;align-items:center;gap:8px;font-size:.86rem;color:var(--muted);margin:4px 0}
.h2-check input{width:18px;height:18px}

.h2-modal-back{position:fixed;inset:0;z-index:50;background:rgba(0,0,0,.6);backdrop-filter:blur(6px);
  display:flex;align-items:flex-end;justify-content:center;padding:0}
.h2-modal{position:relative;width:100%;max-width:620px;max-height:88vh;overflow:auto;
  background:var(--panel);border:1px solid var(--line);border-radius:20px 20px 0 0;padding:20px 16px calc(24px + var(--safe-b))}
.h2-modal-x{position:absolute;top:12px;right:12px;width:34px;height:34px;border:0;border-radius:50%;
  background:var(--panel-2);color:#fff;font-size:20px;cursor:pointer}
@media(min-width:620px){.h2-modal-back{align-items:center}.h2-modal{border-radius:20px}}
.h2-mini{border:1px solid var(--line);background:var(--panel-2);color:var(--text);border-radius:8px;padding:5px 9px;font-size:.78rem;font-weight:700;cursor:pointer;margin-left:auto}

/* ---------- lesson player ---------- */
.h2-player{position:fixed;inset:0;z-index:80;display:flex;background:#07070d;color:var(--text)}
.h2-player-rail{width:240px;flex:0 0 240px;overflow:auto;background:var(--panel);border-right:1px solid var(--line);padding:14px 10px;display:none}
.h2-player-title{font-weight:900;padding:6px 8px 12px}
.h2-player-ch{color:var(--muted);font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;font-weight:800;padding:10px 8px 4px}
.h2-player-sec{display:block;width:100%;text-align:left;border:0;background:none;color:var(--muted);padding:8px 10px;border-radius:9px;font-size:.86rem;cursor:pointer}
.h2-player-sec:hover{background:var(--panel-2);color:#fff}
.h2-player-sec.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
.h2-player-main{flex:1;overflow:auto;padding:48px 18px calc(36px + var(--safe-b));max-width:820px;margin:0 auto;width:100%}
.h2-player-x{position:fixed;top:12px;right:14px;width:38px;height:38px;border:0;border-radius:50%;background:var(--panel-2);color:#fff;font-size:22px;cursor:pointer;z-index:2}
@media(min-width:880px){.h2-player-rail{display:block}.h2-player-main{padding-top:36px}}

/* ===================== v2 styling polish ===================== */
:root{--ring:0 0 0 1px rgba(255,255,255,.04),0 1px 0 rgba(255,255,255,.03) inset}
body{background:
  radial-gradient(140% 90% at 100% -10%,rgba(var(--brand-rgb),.18),transparent 50%),
  radial-gradient(120% 70% at -10% 110%,rgba(56,189,248,.10),transparent 55%),var(--bg);
  background-repeat:no-repeat;background-attachment:fixed;background-size:cover}

/* topbar / titles */
.h2-topbar{box-shadow:0 1px 0 rgba(255,255,255,.04)}
.h2-topbar-title{letter-spacing:-.01em}
/* legacy hero h1 superseded by grand header block below */
.h2-eyebrow{color:var(--brand-2,#b9a8ff)}

/* cards + tiles: softer, layered */
.h2-card,.h2-tile{box-shadow:var(--shadow),var(--ring);background:linear-gradient(180deg,rgba(255,255,255,.025),rgba(255,255,255,0)) ,var(--panel)}
.h2-tile{transition:transform .14s ease,border-color .14s ease,box-shadow .14s ease}
.h2-tile:hover{transform:translateY(-3px);box-shadow:0 14px 36px rgba(var(--brand-rgb),.13),var(--ring)}
.h2-tile-ico{box-shadow:0 8px 20px rgba(var(--brand-rgb),.35)}

/* buttons: gradient sheen + press */
.h2-btn{transition:transform .1s ease,filter .15s ease,box-shadow .15s ease;box-shadow:var(--ring)}
.h2-btn:hover{filter:brightness(1.08)}
.h2-btn:active{transform:translateY(1px)}
.h2-btn.primary{box-shadow:0 10px 26px rgba(var(--brand-rgb),.32)}

/* nav active glow */
.h2-rail .h2-nav-item.active{box-shadow:0 10px 26px rgba(var(--brand-rgb),.3)}
.h2-bottomnav .h2-nav-item.active .h2-nav-ico{transform:translateY(-1px);filter:drop-shadow(0 4px 10px rgba(var(--brand-rgb),.5))}

/* rows: subtle hover + left accent already present */
.h2-cal-row{transition:border-color .12s ease,background .12s ease}
.h2-cal-row:hover{border-color:rgba(255,255,255,.18)}

/* inputs: focus ring */
.h2-formrow input:focus,.h2-formrow select:focus,.h2-login input:focus{outline:none;border-color:rgba(var(--brand-rgb),.7);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}

/* calendar cells pop a touch */
.h2-cal-cell{transition:transform .1s ease,border-color .12s ease,background .12s ease}
.h2-cal-cell:hover{transform:translateY(-1px);background:var(--panel-2)}

/* empty-state dashed boxes softer */
.h2-stub{background:linear-gradient(180deg,rgba(255,255,255,.02),transparent)}

/* nav + thread unread badges */
.h2-badge,.h2-nav-badge{display:inline-grid;place-items:center;min-width:18px;height:18px;padding:0 5px;border-radius:999px;background:linear-gradient(135deg,#ef4444,#f97316);color:#fff;font-size:.66rem;font-weight:900;line-height:1}
.h2-rail .h2-nav-item{position:relative}
.h2-rail .h2-nav-badge{margin-left:auto}
.h2-bottomnav .h2-nav-item{position:relative}
.h2-bottomnav .h2-nav-badge{position:absolute;top:4px;left:calc(50% + 6px)}

/* notification bell */
.h2-bell{position:relative;border:0;background:var(--panel-2);color:#fff;width:38px;height:38px;border-radius:50%;font-size:17px;cursor:pointer;box-shadow:var(--ring)}
.h2-bell-badge{position:absolute;top:-3px;right:-3px;min-width:17px;height:17px;padding:0 4px;border-radius:999px;background:linear-gradient(135deg,#ef4444,#f97316);color:#fff;font-size:.62rem;font-weight:900;display:grid;place-items:center;line-height:1}
.h2-bell-dd{position:fixed;top:60px;right:14px;z-index:60;width:min(340px,92vw);max-height:60vh;overflow:auto;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:8px}
.h2-bell-row{display:block;padding:9px 11px;border-radius:9px;color:var(--text);font-size:.85rem;border-bottom:1px solid var(--line)}
.h2-bell-row:last-of-type{border-bottom:0}
.h2-bell-row.unread{background:rgba(var(--brand-rgb),.12)}
.h2-bell-row:hover{background:var(--panel-2)}
.h2-bell-empty{padding:24px;text-align:center;color:var(--muted);font-size:.85rem}

/* ---------- lessons: video stage + 3 panels ---------- */
.h2-stage{position:relative;width:100%;aspect-ratio:16/9;max-height:62vh;background:#06060d;border:1px solid var(--line);border-radius:16px;overflow:hidden;margin-bottom:14px;box-shadow:var(--shadow)}
.h2-stage iframe{width:100%;height:100%;border:0;display:block}
.h2-stage-empty{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);font-size:.9rem;text-align:center;padding:24px}
.h2-panels{display:grid;grid-template-columns:1fr;gap:10px;margin:0 0 14px;align-items:start}
@media(min-width:680px){.h2-panels{grid-template-columns:repeat(auto-fit,minmax(184px,1fr))}}
.h2-panel{margin-top:0;padding:12px 13px}
.h2-panel .h2-eyebrow{margin:0 0 6px}
.h2-panel p.h2-muted{margin:0 0 8px}
.h2-panel .h2-btn{padding:9px 14px}
.h2-panel .h2-eyebrow{margin-bottom:8px}

/* sign-out controls */
.h2-logout{border:1px solid var(--line);background:var(--panel-2);color:#e6e6f0;border-radius:10px;padding:9px 12px;font-weight:800;font-size:.85rem;cursor:pointer;width:100%}
.h2-logout:hover{border-color:rgba(239,68,68,.5);color:#fecaca}
.h2-signout{border:1px solid var(--line);background:var(--panel-2);color:#cdd;border-radius:999px;padding:7px 12px;font-weight:800;font-size:.78rem;cursor:pointer;white-space:nowrap}
.h2-signout:hover{border-color:rgba(239,68,68,.5);color:#fecaca}

/* calendar: today highlight */
.h2-cal-cell.today{background:rgba(var(--brand-rgb),.16);border-color:rgba(var(--brand-rgb),.55);box-shadow:inset 0 0 0 1px rgba(var(--brand-rgb),.35)}
.h2-cal-cell.today .h2-cal-num{color:var(--brand-2,#bbf7d0)}
.h2-cal-today{position:absolute;top:5px;right:6px;font-size:.54rem;font-weight:900;text-transform:uppercase;letter-spacing:.04em;color:var(--brand-fg,#0a0a12);background:var(--brand-2);border-radius:999px;padding:1px 6px;line-height:1.3}

/* ===================== branding: brand mark + library cards ===================== */
.h2-brand{display:flex;align-items:center;gap:10px}
.h2-brand-mark{width:34px;height:34px;border-radius:11px;display:grid;place-items:center;font-weight:950;font-size:1.05rem;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 22px rgba(var(--brand-rgb),.45)}
.h2-brand-word{font-weight:950;letter-spacing:-.02em;font-size:1.15rem;background:linear-gradient(180deg,#fff,#d6cffb);-webkit-background-clip:text;background-clip:text;color:transparent}

/* breadcrumb */
.h2-crumb{display:flex;align-items:center;gap:10px;margin:4px 0 14px}
.h2-crumb-here{font-weight:800;color:var(--brand-2,#cbb9ff)}

/* folder cards — violet wash, hover lift + glow, open arrow (legacy look) */
.h2-folder-grid{display:grid;grid-template-columns:1fr;gap:12px;margin-bottom:16px}
@media(min-width:560px){.h2-folder-grid{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.h2-folder-grid{grid-template-columns:1fr 1fr 1fr}}
.h2-folder-card{position:relative;display:grid;grid-template-columns:48px minmax(0,1fr) auto;align-items:center;gap:14px;
  padding:16px 18px 34px;border-radius:var(--radius);cursor:pointer;color:var(--text);
  border:1px solid rgba(var(--brand-rgb),.28);background:linear-gradient(135deg,rgba(var(--brand-rgb),.14),rgba(255,255,255,.02));
  box-shadow:var(--ring);transition:transform .14s ease,border-color .14s ease,box-shadow .14s ease}
.h2-folder-card:hover{transform:translateY(-3px);border-color:var(--brand-2);box-shadow:0 12px 30px rgba(var(--brand-rgb),.2)}
.h2-folder-ico{width:48px;height:48px;border-radius:13px;display:grid;place-items:center;font-size:1.5rem;
  background:linear-gradient(135deg,rgba(var(--brand-rgb),.4),rgba(var(--brand2-rgb),.22));border:1px solid rgba(var(--brand2-rgb),.3)}
.h2-folder-copy{min-width:0}
.h2-folder-copy h3{margin:0;font-size:1rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-folder-copy small{color:var(--brand-2,#c4b5fd);font-weight:800;font-size:.74rem}
.h2-folder-arrow{font-size:1.3rem;color:var(--brand-2);opacity:.8}
.h2-folder-trash{position:static;border:0;background:rgba(239,68,68,.16);border:1px solid rgba(248,113,113,.34);
  color:#fecaca;width:26px;height:26px;border-radius:8px;cursor:pointer;font-size:.8rem;line-height:1}
.h2-folder-trash:hover{background:rgba(239,68,68,.8);color:#fff}

/* file cards */
.h2-file-grid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:560px){.h2-file-grid{grid-template-columns:1fr 1fr}}
@media(min-width:980px){.h2-file-grid{grid-template-columns:1fr 1fr 1fr}}
.h2-file-card{position:relative;padding:16px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.025),transparent),var(--panel);box-shadow:var(--ring);
  transition:transform .12s ease,border-color .12s ease}
.h2-file-card:hover{transform:translateY(-2px);border-color:rgba(var(--brand-rgb),.45)}
.h2-file-type{position:absolute;top:12px;right:12px;font-size:.6rem;font-weight:900;letter-spacing:.05em;color:#bae6fd;
  background:rgba(56,189,248,.14);border:1px solid rgba(56,189,248,.3);border-radius:999px;padding:2px 8px}
.h2-file-ico{font-size:1.6rem;margin-bottom:6px}
.h2-file-name{margin:0 0 10px;font-size:.95rem;word-break:break-word}
.h2-file-actions{display:flex;gap:8px;flex-wrap:wrap}
.h2-btn.btn-sm{padding:7px 12px;font-size:.78rem}
.h2-btn.ghost{background:transparent;border:1px solid var(--line)}

/* live room clock */
.h2-clock{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:900;font-size:1.4rem;letter-spacing:.02em;
  color:#bbf7d0;background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.3);border-radius:12px;padding:8px 12px;text-align:center;margin:8px 0}
.h2-clock.warn{color:#fecaca;background:rgba(239,68,68,.14);border-color:rgba(239,68,68,.4)}

/* keep date/time/number pickers clickable inside flex rows */
.h2-formrow input[type=time],.h2-formrow input[type=date]{min-width:130px;flex:0 0 auto}
.h2-formrow select{min-width:120px}
.h2-formrow{align-items:center}

/* resizable lesson viewport — click-and-drag grabbers (right / bottom / corner) */
.h2-stage{position:relative}
.h2-grab{position:absolute;z-index:6;background:transparent;touch-action:none}
.h2-grab-right{top:0;right:-4px;width:16px;height:100%;cursor:ew-resize}
.h2-grab-bottom{left:0;bottom:-4px;height:16px;width:100%;cursor:ns-resize}
.h2-grab-corner{right:-4px;bottom:-4px;width:26px;height:26px;cursor:nwse-resize;z-index:7}
.h2-grab-corner::after{content:"";position:absolute;right:4px;bottom:4px;width:10px;height:10px;border-right:2px solid rgba(var(--brand2-rgb),.7);border-bottom:2px solid rgba(var(--brand2-rgb),.7);border-radius:0 0 3px 0}
.h2-grab-right:hover,.h2-grab-bottom:hover{background:rgba(var(--brand-rgb),.25)}
.h2-drag-shield{position:fixed;inset:0;z-index:9999;cursor:nwse-resize;user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;touch-action:none}
.h2-stage-tools{display:flex;justify-content:flex-end;margin:-6px 0 14px}

/* lesson viewport: keep it inside the content area + attach the reset control */
.h2-stage{max-width:100%;min-width:280px;min-height:200px}
.h2-stage-wrap{position:relative;display:block;width:max-content;max-width:100%;margin:0 auto 30px}

/* ===================== messages: chatbox, threads, recipients ===================== */
.h2-msg-toolbar{display:flex;gap:10px;margin:4px 0 14px}
.h2-msg-search{flex:1;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:12px;padding:11px 14px;font-size:.92rem}
.h2-msg-search:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}
.h2-avatar{width:40px;height:40px;flex:0 0 auto;border-radius:50%;display:grid;place-items:center;font-weight:900;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 6px 16px rgba(var(--brand-rgb),.35)}
.h2-avatar.lg{width:46px;height:46px;font-size:1.1rem}

.h2-thread-list{display:flex;flex-direction:column;gap:8px}
.h2-thread-row{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:14px;
  background:var(--panel);cursor:pointer;transition:border-color .12s,transform .12s}
.h2-thread-row:hover{border-color:rgba(var(--brand-rgb),.45);transform:translateY(-1px)}
.h2-thread-main{flex:1;min-width:0}
.h2-thread-name{font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-thread-prev{color:var(--muted);font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.h2-recip-grid{display:grid;grid-template-columns:1fr;gap:10px}
@media(min-width:560px){.h2-recip-grid{grid-template-columns:1fr 1fr}}
.h2-recip-card{display:flex;align-items:center;gap:12px;padding:13px 14px;border:1px solid var(--line);border-radius:14px;
  background:var(--panel);cursor:pointer;transition:border-color .12s,transform .12s}
.h2-recip-card:hover{border-color:var(--brand-2);transform:translateY(-2px)}
.h2-recip-name{font-weight:800}.h2-recip-role{color:var(--muted);font-size:.78rem;text-transform:capitalize}

.h2-bubble{max-width:78%;padding:10px 13px;border-radius:16px;font-size:.92rem;line-height:1.4;word-break:break-word}
.h2-bubble.them{align-self:flex-start;background:var(--panel-2);border:1px solid var(--line);border-bottom-left-radius:5px}
.h2-bubble.me{align-self:flex-end;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-bottom-right-radius:5px}
.h2-bubble.invite{align-self:flex-start;max-width:86%;background:radial-gradient(circle at top left,rgba(52,211,153,.22),transparent 40%),linear-gradient(135deg,rgba(15,118,110,.6),rgba(20,20,32,.9));border:1px solid rgba(94,234,212,.35)}
.h2-bubble.invite.me{align-self:flex-end}
.h2-invite-eyebrow{font-size:.66rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-2,#5eead4);margin-bottom:4px}
.h2-bubble-from{font-size:.68rem;font-weight:800;color:var(--brand-2,#c4b5fd);margin-bottom:3px}
.h2-bubble-time{font-size:.62rem;opacity:.65;margin-top:4px;text-align:right}
.h2-seen{align-self:flex-end;font-size:.64rem;color:var(--muted);font-weight:700;margin:-2px 4px 4px}
.h2-composer input{flex:1;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:999px;padding:12px 16px;font-size:.95rem}
.h2-composer input:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}

/* ===================== messages: two-pane chatbox ===================== */
.h2-msgs{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:18px;overflow:hidden;background:var(--panel);height:calc(100dvh - 150px);min-height:420px}
@media(min-width:760px){.h2-msgs{flex-direction:row}.h2-msg-side{flex:0 0 300px}}
.h2-msg-side{display:flex;flex-direction:column;min-height:0;flex:1;border-right:1px solid var(--line);background:var(--panel)}
.h2-msg-sidehead{padding:14px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:10px}
.h2-msg-sidetop{display:flex;align-items:center;justify-content:space-between;gap:8px}
.h2-chips{display:flex;gap:8px;flex-wrap:wrap}
.h2-chip{border:1px solid var(--line);background:var(--panel-2);color:var(--muted);border-radius:999px;padding:5px 13px;font-size:.78rem;font-weight:800;cursor:pointer}
.h2-chip.on{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent}
.h2-conv-list{flex:1;overflow-y:auto;min-height:0}
.h2-conv{display:flex;align-items:center;gap:11px;padding:12px 14px;border-bottom:1px solid var(--line);cursor:pointer}
.h2-conv:hover{background:var(--panel-2)}
.h2-conv.active{background:rgba(var(--brand-rgb),.14);border-left:3px solid var(--brand)}
.h2-conv-main{flex:1;min-width:0}
.h2-conv-name{font-weight:800;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-conv-prev{color:var(--muted);font-size:.78rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.h2-msg-main{display:flex;flex-direction:column;min-height:0;flex:1;min-width:0;background:radial-gradient(120% 80% at 100% 0,color-mix(in srgb,var(--brand,#8b5cf6) 8%,transparent),transparent 50%),var(--bg)}
.h2-chat-head{display:flex;align-items:center;gap:10px;padding:12px 14px;border-bottom:1px solid var(--line);background:rgba(16,16,24,.6)}
.h2-back{display:none}
.h2-chat-empty{flex:1;display:grid;place-items:center;text-align:center;color:var(--muted);padding:30px}
.h2-chat{flex:1;overflow-y:auto;min-height:0;display:flex;flex-direction:column;gap:8px;padding:16px}
.h2-chat::before{content:'';margin-top:auto}
.h2-chat-body{flex:1;overflow-y:auto;min-height:0}
.h2-composer{display:flex;gap:8px;padding:12px 14px calc(12px + var(--safe-b));border-top:1px solid var(--line);background:var(--panel)}
.h2-composer-btns{display:flex;gap:8px;align-items:flex-end;flex:0 0 auto}
.h2-composer input{flex:1;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:999px;padding:12px 16px;font-size:.95rem}
.h2-composer input:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}

/* mobile: one pane at a time */
@media(max-width:759px){
  .h2-msgs.has-active .h2-msg-side{display:none}
  .h2-msgs:not(.has-active) .h2-msg-main{display:none}
  .h2-back{display:inline-flex}
  .h2-msgs{height:calc(100dvh - 124px - var(--safe-b));min-height:0}
}

/* admin tabs */
.h2-admin-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.h2-atab{border:1px solid var(--line);background:var(--panel-2);color:#cfcfe0;border-radius:999px;padding:8px 15px;font-weight:800;font-size:.84rem;cursor:pointer}
.h2-atab.on{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent}

/* library drag-to-reorder */
.h2-folder-card[draggable="true"],.h2-file-card[draggable="true"]{cursor:grab}
.h2-dragging{opacity:.4}
.h2-drop{outline:2px dashed var(--brand-2);outline-offset:3px}

/* lesson viewport: fullscreen + fs button */
.h2-stage-fs-btn,.h2-stage-maxbtn{position:absolute;z-index:8;width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:rgba(16,16,24,.72);color:#fff;cursor:pointer;font-size:1.05rem;display:grid;place-items:center}
.h2-stage-fs-btn{top:8px;left:8px}
.h2-stage-maxbtn{left:8px;bottom:8px}
.h2-stage-fs-btn:hover,.h2-stage-maxbtn:hover{border-color:var(--brand-2)}
.h2-stage-fs-btn:hover{border-color:var(--brand-2)}
.h2-stage-fs{position:fixed !important;top:0 !important;left:0 !important;right:0 !important;bottom:0 !important;width:100vw !important;height:100vh !important;height:100dvh !important;max-width:none !important;min-width:0 !important;max-height:none !important;min-height:0 !important;border-radius:0 !important;margin:0 !important;z-index:99999}
.h2-fs-active .h2-grab,.h2-fs-active .h2-stage-maxbtn{display:none}

/* branded modal popups with backdrop blur */
.h2-pop-back{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:20px;
  background:rgba(6,6,12,.55);backdrop-filter:blur(10px);opacity:0;transition:opacity .2s ease}
.h2-pop-back.show{opacity:1}
.h2-pop{width:100%;background:linear-gradient(180deg,rgba(255,255,255,.03),transparent),var(--panel);border:1px solid var(--line);
  border-radius:20px;padding:24px;box-shadow:var(--shadow);transform:translateY(12px) scale(.98);transition:transform .2s ease;max-height:90vh;overflow:auto}
.h2-pop-back.show .h2-pop{transform:none}
.h2-pop h2{margin:6px 0 2px;font-size:1.3rem}
.h2-pop .h2-pop-ico{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;font-size:1.4rem;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 8px 22px rgba(var(--brand-rgb),.4);margin-bottom:8px}
.h2-pop label{display:block;color:var(--brand-2);font-weight:800;font-size:.74rem;letter-spacing:.04em;text-transform:uppercase;margin:14px 0 6px}
.h2-pop input,.h2-pop textarea{width:100%;box-sizing:border-box;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:12px;padding:12px 14px;font-size:.95rem;font-family:inherit}
.h2-pop input:focus,.h2-pop textarea:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}
.h2-pop-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}

/* loading spinner */
.h2-boot{position:fixed;inset:0;display:grid;place-items:center;z-index:5}
.h2-spin{width:52px;height:52px;border-radius:50%;border:4px solid rgba(var(--brand-rgb),.18);border-top-color:var(--brand-2);border-right-color:var(--brand);animation:h2spin .75s cubic-bezier(.45,.05,.55,.95) infinite;will-change:transform;box-shadow:0 0 26px rgba(var(--brand-rgb),.25)}
@keyframes h2spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.h2-spin{animation-duration:1.4s}}

/* library drag-and-drop dropzone */
.h2-dropzone{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:36px 20px;margin:6px 0 12px;
  border:2px dashed rgba(var(--brand-rgb),.4);border-radius:18px;cursor:pointer;text-align:center;
  background:linear-gradient(180deg,rgba(var(--brand-rgb),.06),transparent);transition:border-color .15s,background .15s,transform .1s}
.h2-dropzone:hover{border-color:var(--brand-2);background:rgba(var(--brand-rgb),.1)}
.h2-dropzone.over{border-color:var(--brand-2);background:rgba(var(--brand-rgb),.16);transform:scale(1.005)}
.h2-dz-plus{width:56px;height:56px;border-radius:16px;display:grid;place-items:center;font-size:2rem;font-weight:300;color:#fff;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 12px 28px rgba(var(--brand-rgb),.42);margin-bottom:6px}
.h2-dz-title{font-weight:800;font-size:1rem}
.h2-dz-sub{color:var(--muted);font-size:.82rem}

/* branded dashboard: multi-hue gradient tile icons */
.h2-tilegrid .h2-tile:nth-child(6n+1) .h2-tile-ico{background:linear-gradient(135deg,#8b5cf6,#6366f1)}
.h2-tilegrid .h2-tile:nth-child(6n+2) .h2-tile-ico{background:linear-gradient(135deg,#06b6d4,#3b82f6)}
.h2-tilegrid .h2-tile:nth-child(6n+3) .h2-tile-ico{background:linear-gradient(135deg,#a855f7,#ec4899)}
.h2-tilegrid .h2-tile:nth-child(6n+4) .h2-tile-ico{background:linear-gradient(135deg,#22c55e,#14b8a6)}
.h2-tilegrid .h2-tile:nth-child(6n+5) .h2-tile-ico{background:linear-gradient(135deg,#f59e0b,#ef4444)}
.h2-tilegrid .h2-tile:nth-child(6n) .h2-tile-ico{background:linear-gradient(135deg,#3b82f6,#8b5cf6)}
.h2-tile-ico{box-shadow:0 8px 22px rgba(59,130,246,.28)}

/* ===================== grand per-tab headers ===================== */
.h2-hero{position:relative;margin-bottom:24px;padding:6px 0 4px;text-align:center}
.h2-hero h1{font-size:clamp(2rem,4.6vw,3rem);font-weight:950;letter-spacing:-.035em;line-height:1.28;padding-bottom:.22em;margin:4px 0 7px;text-align:center;
  background:linear-gradient(170deg,#fff 28%,#c9bff0);-webkit-background-clip:text;background-clip:text;color:transparent;overflow:visible}
.h2-hero .h2-eyebrow{display:block;text-align:center;color:var(--brand-2);font-size:.72rem;font-weight:900;letter-spacing:.22em;text-transform:uppercase}
.h2-hero .h2-muted{display:block;text-align:center;font-size:.96rem;max-width:60ch;margin-left:auto;margin-right:auto}
.h2-hero::after{content:"";display:block;width:62px;height:3px;border-radius:3px;margin:16px auto 0;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));box-shadow:0 0 18px rgba(var(--brand-rgb),.5)}

/* branded empty-state panel */
.h2-empty{display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px;padding:54px 26px;
  border:1px dashed rgba(var(--brand-rgb),.3);border-radius:22px;background:radial-gradient(120% 90% at 50% -10%,rgba(var(--brand-rgb),.12),transparent 60%),linear-gradient(180deg,rgba(255,255,255,.02),transparent)}
.h2-empty-ico{width:66px;height:66px;border-radius:19px;display:grid;place-items:center;font-size:2rem;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 16px 38px rgba(var(--brand-rgb),.42);margin-bottom:4px}
.h2-empty h3{margin:6px 0 0;font-size:1.2rem;font-weight:900}
.h2-empty p{color:var(--muted);max-width:400px;line-height:1.5;margin:0}

/* ===== messages: wider chat, smaller sidebar, bigger bubbles, grander invites ===== */
@media(min-width:760px){.h2-msg-side{flex:0 0 270px}}
.h2-bubble{max-width:74%;padding:13px 17px;font-size:1rem;line-height:1.5;border-radius:18px}
.h2-bubble.me{border-bottom-right-radius:6px}
.h2-bubble.them{border-bottom-left-radius:6px}
.h2-bubble.invite{max-width:92%;padding:18px 20px;border-radius:20px;border:1px solid rgba(94,234,212,.45);box-shadow:0 8px 30px -10px rgba(45,212,191,.45),inset 0 1px 0 rgba(255,255,255,.05)}
.h2-bubble.invite .h2-invite-eyebrow{font-size:.74rem;letter-spacing:.12em;margin-bottom:7px}
.h2-bubble.invite .h2-invite-text{font-size:1.08rem;font-weight:650;line-height:1.35}
.h2-bubble.invite .h2-btn{font-size:.95rem;padding:9px 18px;font-weight:800}

/* ===== invite card (reference-style) + notif clear ===== */
.h2-bubble.invite{max-width:96%;padding:22px 24px}
.h2-bubble.invite .h2-invite-eyebrow{font-size:.72rem;font-weight:900;letter-spacing:.16em;text-transform:uppercase;color:var(--brand-2,#b9a8ff);margin-bottom:6px}
.h2-invite-title{font-size:1.6rem;font-weight:850;line-height:1.15;letter-spacing:-.02em;color:#f4f1ff;margin-bottom:7px}
.h2-invite-sub{font-size:1rem;line-height:1.45;color:#cfc9e6;margin-bottom:16px;max-width:46ch}
.h2-invite-cta .h2-btn{font-size:1rem;font-weight:800;padding:11px 26px;border-radius:12px}
.h2-bell-actions{display:flex;gap:8px;margin-top:8px}
.h2-bell-actions .h2-btn{flex:1}
.h2-bell-clear{color:#fca5a5;border-color:rgba(248,113,113,.3)}
.h2-bell-clear:hover{background:rgba(248,113,113,.12);border-color:rgba(248,113,113,.5)}

/* ===== chat wrapping + auto-grow composer ===== */
.h2-bubble{max-width:min(74%,560px);overflow-wrap:anywhere;word-break:break-word}
.h2-bubble.invite{max-width:min(96%,560px)}
.h2-composer{align-items:flex-end}
.h2-msg-input{flex:1;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:20px;padding:11px 16px;font-size:.95rem;font-family:inherit;line-height:1.4;resize:none;min-height:44px;max-height:140px;overflow-y:auto}
.h2-msg-input:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}

/* ===== notif dropdown: wrap long text, no horizontal scrollbar ===== */
.h2-bell-dd{overflow-x:hidden}
.h2-bell-row{overflow-wrap:anywhere;word-break:break-word}
.h2-bell-row>div:first-child{overflow-wrap:anywhere;word-break:break-word}

/* ===================== calendar upgrade ===================== */
/* in-cell event chips with glowing dot + label */
.h2-cal-dots{display:flex;gap:3px;flex-wrap:wrap}
.h2-cal-evs{display:flex;flex-direction:column;gap:2px;width:100%;margin-top:2px}
.h2-cal-ev{display:flex;align-items:center;gap:5px;width:100%;max-width:100%;font-size:.62rem;font-weight:600;color:#fff;
  background:rgba(var(--brand-rgb),.14);border:1px solid rgba(var(--brand-rgb),.3);border-radius:6px;padding:2px 5px;line-height:1.3;overflow:hidden}
.h2-cal-ev-txt{flex:1 1 auto;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.h2-cal-ev.cancelled{color:var(--red-ink);background:color-mix(in srgb,var(--red) 12%,transparent);border-color:color-mix(in srgb,var(--red) 30%,transparent);text-decoration:line-through;opacity:.8}
.h2-cal-more{font-size:.58rem;font-weight:800;color:var(--muted);padding-left:2px}
.h2-cal-ev .h2-dot.green{background:var(--brand-2)}
.h2-dot.glow{box-shadow:0 0 0 0 rgba(56,189,248,.55);animation:h2-dotglow 1.8s ease-out infinite}
@keyframes h2-dotglow{0%{box-shadow:0 0 0 0 rgba(56,189,248,.5)}70%{box-shadow:0 0 0 6px rgba(56,189,248,0)}100%{box-shadow:0 0 0 0 rgba(56,189,248,0)}}
@media(min-width:880px){.h2-cal-ev{font-size:.68rem}}
.h2-lpk-dirty{display:none;color:#fcd34d;font-weight:800;font-size:.76rem;margin-right:8px;white-space:nowrap}
.h2-lpk-foot .h2-btn.primary.dirty{animation:h2-donepulse 1.5s ease-in-out infinite}
@keyframes h2-donepulse{0%,100%{box-shadow:0 0 0 2px rgba(var(--brand-rgb),.45),0 0 9px rgba(var(--brand-rgb),.4)}50%{box-shadow:0 0 0 2px rgba(var(--brand-rgb),.85),0 0 20px rgba(var(--brand-rgb),.7)}}

/* big collapsible event cards in day modal */
.h2-evcard{border:1px solid var(--line);border-left:3px solid var(--brand-2);border-radius:var(--radius-sm);background:var(--panel);overflow:hidden}
.h2-evcard.cancelled{border-left-color:var(--red);opacity:.85}
.h2-evcard-head{display:flex;align-items:center;gap:14px;padding:13px 15px;cursor:pointer}
.h2-evcard-head:hover{background:var(--panel-2)}
.h2-evcard-time{font-size:1.15rem;font-weight:900;color:#fff;min-width:62px}
.h2-evcard.cancelled .h2-evcard-time{text-decoration:line-through;color:var(--muted)}
.h2-evcard-meta{flex:1;min-width:0}
.h2-evcard-title{font-size:1rem;font-weight:700;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-evcard-sub{font-size:.78rem;color:var(--muted);margin-top:2px}
.h2-evcard-caret{transition:transform .2s ease;color:var(--muted);font-size:1.2rem}
.h2-evcard.open .h2-evcard-caret{transform:rotate(180deg)}
.h2-evcard-body{display:none;padding:0 15px 15px;border-top:1px solid var(--line)}
.h2-evcard.open .h2-evcard-body{display:block;padding-top:13px}
.h2-evcard-body .h2-btn.primary{margin-top:10px}
.h2-evcard-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.h2-btn.h2-danger{color:var(--red-ink);background:color-mix(in srgb,var(--red) 14%,transparent);border-color:color-mix(in srgb,var(--red) 48%,transparent)}
.h2-btn.h2-danger:hover{background:rgba(248,113,113,.14);border-color:rgba(248,113,113,.55)}

/* accordion forms */
.h2-acc{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--panel);margin-top:12px;overflow:hidden}
.h2-acc>summary{list-style:none;cursor:pointer;padding:14px 16px;font-size:1.05rem;font-weight:800;color:#fff;display:flex;align-items:center;justify-content:space-between}
.h2-acc>summary::-webkit-details-marker{display:none}
.h2-acc>summary::after{content:"⌄";color:var(--muted);font-size:1.1rem;transition:transform .2s ease}
.h2-acc[open]>summary::after{transform:rotate(180deg)}
.h2-acc>summary:hover{background:var(--panel-2)}
.h2-acc-body{padding:4px 16px 16px;border-top:1px solid var(--line)}

/* ===================== lessons: banner, invite log ===================== */
.h2-room-banner{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:0 0 14px;padding:13px 16px;border-radius:var(--radius-sm);
  background:linear-gradient(90deg,rgba(245,158,11,.16),rgba(239,68,68,.12));border:1px solid rgba(245,158,11,.4);box-shadow:0 0 24px -6px rgba(245,158,11,.4)}
.h2-room-banner .h2-banner-txt{flex:1;min-width:200px;font-size:.92rem;font-weight:600;color:#fde68a}
.h2-room-banner.warn{animation:h2-bannerpulse 2.4s ease-in-out infinite}
@keyframes h2-bannerpulse{0%,100%{box-shadow:0 0 22px -8px rgba(245,158,11,.35)}50%{box-shadow:0 0 30px -4px rgba(245,158,11,.6)}}
.h2-invite-log{display:flex;flex-direction:column;gap:6px;margin-top:12px}
.h2-invitelog-row{display:flex;align-items:center;gap:9px;padding:9px 12px;border-radius:10px;font-size:.86rem;font-weight:600;color:#bbf7d0;
  background:rgba(34,197,94,.12);border:1px solid rgba(34,197,94,.32);animation:h2-logpop .3s ease}
@keyframes h2-logpop{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.h2-invitelog-ok{display:grid;place-items:center;width:20px;height:20px;border-radius:50%;background:#22c55e;color:#04240f;font-size:.7rem;font-weight:900;flex:0 0 auto}

/* ===================== students rows ===================== */
.h2-stu-row{display:flex;align-items:center;gap:12px;padding:13px 15px;border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:var(--radius-sm);background:var(--panel)}
.h2-stu-main{flex:1;min-width:0}
.h2-stu-name{font-weight:700;color:var(--text)}
.h2-stu-sub{font-size:.78rem;color:var(--muted);margin-top:2px}

/* ===================== global chat dock ===================== */
.h2-chatfab{position:fixed;right:20px;bottom:calc(20px + var(--safe-b));z-index:80;width:58px;height:58px;border:0;border-radius:50%;cursor:pointer;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:24px;box-shadow:0 10px 30px -6px color-mix(in srgb,var(--brand,#8b5cf6) 70%,transparent);
  display:grid;place-items:center;transition:transform .15s ease}
.h2-chatfab:hover{transform:translateY(-2px) scale(1.04)}
.h2-chatfab.on{transform:scale(.94)}
.h2-chatfab-badge{position:absolute;top:-2px;right:-2px;min-width:20px;height:20px;padding:0 5px;border-radius:999px;background:linear-gradient(135deg,#ef4444,#f97316);color:#fff;font-size:.66rem;font-weight:900;display:grid;place-items:center;border:2px solid var(--bg)}
.h2-chatpanel{position:fixed;right:20px;bottom:calc(88px + var(--safe-b));z-index:80;width:min(380px,92vw);height:min(560px,72vh);
  display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow)}
.h2-chatpanel-head{display:flex;align-items:center;gap:10px;padding:13px 15px;border-bottom:1px solid var(--line);background:var(--panel-2);font-size:1.05rem}
.h2-chatpanel-x,.h2-chatpanel-back{border:0;background:transparent;color:var(--muted);font-size:1.3rem;cursor:pointer;line-height:1}
.h2-chatpanel-list{flex:1;overflow-y:auto}
.h2-chatpanel-conv{display:flex;align-items:center;gap:11px;padding:11px 14px;border-bottom:1px solid var(--line);cursor:pointer}
.h2-chatpanel-conv:hover{background:var(--panel-2)}
.h2-avatar.sm{width:34px;height:34px;font-size:.8rem;flex:0 0 auto}
.h2-chatpanel-name{font-weight:700;font-size:.9rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-chatpanel-prev{font-size:.76rem;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-chatpanel-msgs{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:7px;padding:14px}
.h2-cd-bubble{max-width:80%;padding:9px 13px;border-radius:15px;font-size:.9rem;line-height:1.4;overflow-wrap:anywhere;word-break:break-word}
.h2-cd-bubble.me{align-self:flex-end;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-bottom-right-radius:5px}
.h2-cd-bubble.them{align-self:flex-start;background:var(--panel-2);border:1px solid var(--line);border-bottom-left-radius:5px}
.h2-chatpanel-composer{display:flex;gap:8px;align-items:flex-end;padding:10px 12px calc(10px + var(--safe-b));border-top:1px solid var(--line)}
.h2-cd-input{flex:1;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:16px;padding:9px 13px;font-size:.9rem;font-family:inherit;line-height:1.4;resize:none;min-height:40px;max-height:90px;overflow-y:auto}
.h2-cd-input:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}
@media(max-width:760px){.h2-chatfab{bottom:calc(74px + var(--safe-b))}.h2-chatpanel{bottom:calc(140px + var(--safe-b))}}

/* ===== messages: keep sidebar fixed even with long unbroken previews ===== */
.h2-msg-side{min-width:0}
.h2-msg-main{min-width:0}
.h2-conv-prev,.h2-conv-name{min-width:0;max-width:100%}

/* ===== modal form fields (folder/link popup) ===== */
.h2-pop-title{font-size:1.3rem;font-weight:850;margin:0 0 14px}
.h2-pop-field{display:block;margin-bottom:12px}
.h2-pop-field>span{display:block;font-size:.74rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:5px}
.h2-pop-input{background:var(--field);border:1px solid var(--line);color:#fff;border-radius:var(--radius-sm);padding:11px 13px;font-size:.95rem}
.h2-pop-input:focus{outline:none;border-color:rgba(var(--brand-rgb),.7);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}
.h2-pop-actions{display:flex;gap:10px;margin-top:18px}
.h2-pop-actions .h2-btn{flex:1}

/* ===================== media tab ===================== */
.h2-folder-lock{position:absolute;top:10px;right:10px;font-size:.85rem;opacity:.7}
.h2-media-embed{position:relative;width:100%;aspect-ratio:16/9;border:0;padding:0;background:#000;border-radius:12px;overflow:hidden;cursor:pointer;display:block}
.h2-media-embed iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.h2-media-featured{display:grid;grid-template-columns:1fr;gap:16px;margin-bottom:20px}
@media(min-width:860px){.h2-media-featured{grid-template-columns:1.6fr 1fr;align-items:center}}
.h2-media-featured .h2-media-embed.featured{cursor:default}
.h2-media-featured-body h2{font-size:1.5rem;font-weight:850;margin:6px 0 6px;line-height:1.2}
.h2-media-controls{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:18px}
.h2-media-search{flex:1;min-width:200px;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:999px;padding:11px 16px;font-size:.92rem}
.h2-media-search:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}
.h2-media-chips{display:flex;gap:7px;flex-wrap:wrap}
.h2-media-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:620px){.h2-media-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1040px){.h2-media-grid{grid-template-columns:1fr 1fr 1fr}}
.h2-media-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .12s ease,border-color .12s ease}
.h2-media-card:hover{transform:translateY(-2px);border-color:rgba(var(--brand-rgb),.5)}
.h2-media-info{padding:13px 15px;display:flex;flex-direction:column;gap:6px}
.h2-media-info h3{font-size:1rem;font-weight:700;line-height:1.25}
.h2-media-badge{align-self:flex-start;font-size:.64rem;font-weight:900;text-transform:uppercase;letter-spacing:.06em;color:var(--brand-2,#c4b5fd);background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.3);border-radius:999px;padding:2px 9px}
.h2-media-embed.lightbox{aspect-ratio:16/9;cursor:default}

/* media card: poster thumbnail that opens the big player */
.h2-media-thumb{position:relative;width:100%;aspect-ratio:16/9;border:0;padding:0;cursor:pointer;background:#000 center/cover no-repeat;display:grid;place-items:center}
.h2-media-thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(0,0,0,.35))}
.h2-media-play{position:relative;z-index:1;width:56px;height:56px;border-radius:50%;background:rgba(var(--brand-rgb),.94);color:#fff;display:grid;place-items:center;font-size:1.4rem;padding-left:4px;box-shadow:0 8px 24px rgba(var(--brand-rgb),.55);transition:transform .15s ease}
.h2-media-thumb:hover .h2-media-play{transform:scale(1.12)}

/* ===================== global mini video player ===================== */
.h2-miniplayer{position:fixed;z-index:90;width:min(440px,92vw);background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.h2-miniplayer.docked{top:74px;right:18px;left:auto;transform:none}
.h2-mini-head{display:flex;align-items:center;gap:8px;padding:8px 10px;background:var(--panel-2);cursor:grab;user-select:none;touch-action:none}
.h2-mini-head:active{cursor:grabbing}
.h2-mini-grip{color:var(--muted);letter-spacing:-2px}
.h2-mini-title{flex:1;min-width:0;font-size:.82rem;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-mini-btn{border:0;background:transparent;color:var(--muted);font-size:1.05rem;cursor:pointer;width:28px;height:28px;border-radius:7px;line-height:1;flex:0 0 auto}
.h2-mini-btn:hover{background:rgba(255,255,255,.08);color:#fff}
.h2-mini-frame{position:relative;width:100%;aspect-ratio:16/9;background:#000}
.h2-mini-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* ===== media "Now Playing" in-page viewport ===== */
.h2-media-stage-wrap{position:relative;width:100%;margin:0 0 18px}
.h2-media-stage{position:relative;width:100%;height:min(56vh,480px);min-height:200px;background:#000;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.h2-media-stage .h2-ytmount,.h2-media-stage iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.h2-media-stage-empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px;background:radial-gradient(circle at 50% 40%,rgba(var(--brand-rgb),.12),transparent 60%)}
.h2-media-actions{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
/* mini-player YT mount fill */
.h2-mini-frame .h2-ytmount,.h2-mini-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}

/* pop-out resize handle */
.h2-miniplayer{padding-bottom:0}
.h2-mini-resize{position:absolute;right:2px;bottom:2px;width:18px;height:18px;cursor:nwse-resize;z-index:2;
  background:linear-gradient(135deg,transparent 50%,var(--muted) 50%,var(--muted) 60%,transparent 60%,transparent 72%,var(--muted) 72%,var(--muted) 82%,transparent 82%);opacity:.6}
.h2-mini-resize:hover{opacity:1}

/* ============================================================
   MOBILE CLEANUP (phones ≤ 759px)
   ============================================================ */
@media(max-width:759px){
  /* --- messages: fit the screen so the composer is always visible --- */
  .h2-msgs{height:calc(100dvh - 150px - var(--safe-b));min-height:0;border-radius:14px}
  .h2-msg-sidehead{padding:12px}
  .h2-conv{padding:11px 12px}
  .h2-composer{padding:10px 12px calc(10px + var(--safe-b))}
  .h2-chat{padding:13px}
  /* full-screen focused chat: filter pinned top, composer pinned bottom, only messages scroll */
  body.h2-chat-open .h2-topbar, body.h2-chat-open .h2-bottomnav { display:none !important; }
  body.h2-chat-open .h2-msgs.has-active { position:fixed; inset:0; height:auto; max-width:none; margin:0; border:0; border-radius:0; z-index:60; }
  /* message box full width, Send / Invite on a row beneath it */
  .h2-composer { flex-direction:column; align-items:stretch; }
  .h2-composer .h2-msg-input { width:100%; }
  .h2-composer-btns { width:100%; }
  .h2-composer-btns .h2-btn { flex:1; }

  /* --- calendar: events become compact dots (chips overflow narrow cells & broke the grid) --- */
  .h2-cal-grid{gap:4px}
  .h2-cal-cell{min-height:46px;padding:6px 4px}
  .h2-cal-num{font-size:.72rem}
  .h2-cal-evs{flex-direction:row;flex-wrap:wrap;gap:3px;margin-top:3px;justify-content:center}
  .h2-cal-ev{width:auto;background:transparent;border:0;padding:0}
  .h2-cal-ev-txt,.h2-cal-more{display:none}
  .h2-cal-ev .h2-dot{width:6px;height:6px}
  .h2-cal-today{font-size:.5rem;padding:1px 4px}

  /* --- global chat dock: full-height sheet so it can't clip off-screen --- */
  .h2-chatpanel{top:58px;bottom:calc(70px + var(--safe-b));left:8px;right:8px;width:auto;height:auto;max-height:none;border-radius:16px}
  .h2-chatfab{right:14px;bottom:calc(72px + var(--safe-b))}

  /* --- media: tighter now-playing viewport on phones --- */
  .h2-media-stage{height:min(40vh,260px)}
  .h2-media-controls{gap:9px}
}

/* ===== global host-reconnect: persistent header button ===== */
.h2-rc-head{position:fixed;top:10px;left:50%;transform:translateX(-50%);z-index:95;border:0;cursor:pointer;
  background:linear-gradient(135deg,#2563eb,#3b82f6);color:#fff;font-weight:800;font-size:.84rem;letter-spacing:.01em;
  padding:9px 18px;border-radius:999px;box-shadow:0 8px 26px rgba(37,99,235,.55);display:flex;align-items:center;gap:8px;animation:h2-rcpulse 2.2s ease-in-out infinite}
.h2-rc-head::before{content:"";width:8px;height:8px;border-radius:50%;background:#fff;box-shadow:0 0 0 0 rgba(255,255,255,.7);animation:h2-rcdot 1.6s ease-out infinite}
@keyframes h2-rcdot{0%{box-shadow:0 0 0 0 rgba(255,255,255,.6)}70%{box-shadow:0 0 0 7px rgba(255,255,255,0)}100%{box-shadow:0 0 0 0 rgba(255,255,255,0)}}
@keyframes h2-rcpulse{0%,100%{box-shadow:0 8px 22px rgba(37,99,235,.45)}50%{box-shadow:0 10px 30px rgba(37,99,235,.7)}}
@media(max-width:759px){.h2-rc-head{top:auto;bottom:calc(72px + var(--safe-b));font-size:.78rem;padding:8px 15px}}
.h2-rc-headwrap{position:fixed;top:10px;left:50%;transform:translateX(-50%);z-index:95;display:flex;gap:8px;align-items:center}
.h2-rc-headwrap .h2-rc-head{position:static;left:auto;top:auto;bottom:auto;transform:none}
.h2-rc-end{background:linear-gradient(135deg,color-mix(in srgb,var(--red) 70%,#000),var(--red))!important;box-shadow:0 8px 26px color-mix(in srgb,var(--red) 50%,transparent)!important;animation:none!important}
.h2-rc-end::before{display:none!important}
.h2-rc-warn{margin:4px 0 0;color:#f0b27a;font-size:.86rem;line-height:1.5}
.h2-btn.danger{background:linear-gradient(135deg,color-mix(in srgb,var(--red) 70%,#000),var(--red));border-color:transparent;color:#fff}
@media(min-width:880px){.h2-rc-headwrap{left:calc(50% + var(--rail-w) / 2)}}
@media(max-width:759px){.h2-rc-headwrap{top:auto;bottom:calc(72px + var(--safe-b));flex-wrap:wrap;justify-content:center}}


/* ===== time picker (replaces fiddly native time inputs) ===== */
.h2-timepick{display:inline-flex;gap:6px;align-items:center}
.h2-tp{background:var(--field);border:1px solid var(--line);color:#fff;border-radius:var(--radius-sm);padding:9px 8px;font-size:.9rem;min-width:54px}
.h2-tp:focus{outline:none;border-color:rgba(var(--brand-rgb),.7);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}
.h2-tp-row{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:10px}
.h2-tp-to{color:var(--muted);font-size:.85rem}
/* student-unavailable chip (red) */
.h2-cal-ev.off{color:#fca5a5;background:rgba(248,113,113,.12);border-color:rgba(248,113,113,.3)}
.h2-cal-ev.off .h2-dot{background:var(--red)}

/* ===================== lesson plans: grand banner cards + editor ===================== */
.h2-plan-cards{display:flex;flex-direction:column;gap:22px;max-width:760px;margin:0 auto}
.h2-plan-card{border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--panel);cursor:pointer;
  box-shadow:var(--shadow);transition:transform .15s ease,border-color .15s ease}
.h2-plan-card:hover{transform:translateY(-3px);border-color:rgba(var(--brand-rgb),.55)}
.h2-plan-banner{height:170px;background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 55%,#22d3ee 130%);background-size:cover;background-position:center;position:relative}
.h2-plan-banner::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,.35))}
.h2-plan-banner.edit{height:160px;display:flex;align-items:center;justify-content:center;border-radius:14px}
.h2-plan-banner.edit::after{display:none}
.h2-plan-body{padding:22px 24px}
.h2-plan-body h2{font-size:1.7rem;font-weight:850;line-height:1.15;margin:4px 0 6px}
.h2-plan-meta{display:flex;gap:16px;color:var(--muted);font-size:.85rem;margin:12px 0 16px}
.h2-plan-chhead{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:6px}
/* drag-drop media zones */
.h2-plan-dz{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:84px;padding:14px;cursor:pointer;text-align:center;
  border:1.5px dashed rgba(var(--brand-rgb),.45);border-radius:12px;background:rgba(var(--brand-rgb),.06);color:var(--muted);font-size:.86rem;transition:background .12s ease,border-color .12s ease}
.h2-plan-dz:hover,.h2-plan-dz.over{background:rgba(var(--brand-rgb),.14);border-color:rgba(var(--brand-rgb),.8);color:#ddd6ff}
.h2-plan-dz-ico{font-size:1.3rem}
.h2-plan-banner.edit .h2-plan-dz{background:rgba(0,0,0,.35);border-color:rgba(255,255,255,.4);color:#fff;backdrop-filter:blur(2px)}
.h2-plan-sec{border:1px solid var(--line);border-radius:12px;padding:12px;margin-top:10px;background:var(--panel-2)}
.h2-plan-sec-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.h2-plan-sec-head strong{flex:1;min-width:0}

/* preview: ask-your-teacher box + ephemeral sent card */
.h2-player-banner{height:120px;border-radius:14px;background-size:cover;background-position:center;margin-bottom:14px}
.h2-ask{margin-top:20px;padding:16px;border:1px solid rgba(94,234,212,.3);border-radius:14px;background:radial-gradient(circle at top left,rgba(45,212,191,.1),transparent 60%),var(--panel-2)}
.h2-ask-input{width:100%;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:12px;padding:11px 13px;font-size:.92rem;font-family:inherit;line-height:1.4;resize:vertical;min-height:56px}
.h2-ask-input:focus{outline:none;border-color:rgba(94,234,212,.6)}
.h2-ask-sent{position:fixed;right:20px;bottom:20px;z-index:100000;max-width:340px;border:1px solid rgba(34,197,94,.45);border-radius:14px;overflow:hidden;
  background:var(--panel);box-shadow:var(--shadow);opacity:0;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease}
.h2-ask-sent.show{opacity:1;transform:none}
.h2-ask-sent.leaving{opacity:0;transform:translateY(14px)}
.h2-ask-sent-head{background:linear-gradient(135deg,#16a34a,#22c55e);color:#04240f;font-weight:900;font-size:.82rem;padding:9px 13px}
.h2-ask-sent-body{padding:11px 13px;font-size:.86rem;color:var(--text)}

/* ===== brand every field inside modals (fixes unstyled white inputs) ===== */
.h2-modal input:not([type=checkbox]):not([type=radio]),.h2-modal textarea,.h2-modal select,
.h2-pop input:not([type=checkbox]):not([type=radio]),.h2-pop textarea,.h2-pop select{
  background:var(--field);border:1px solid var(--line);color:#fff;border-radius:var(--radius-sm);padding:10px 12px;font-size:.9rem;font-family:inherit}
.h2-modal input:focus,.h2-modal textarea:focus,.h2-modal select:focus,
.h2-pop input:focus,.h2-pop textarea:focus,.h2-pop select:focus{outline:none;border-color:rgba(var(--brand-rgb),.7);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}

/* ===================== reusable purple back button (sub-tabs site-wide) ===================== */
.h2-backbtn{display:inline-flex;align-items:center;gap:7px;border:0;cursor:pointer;margin:0 auto 4px;
  background:linear-gradient(135deg,rgba(var(--brand-rgb),.22),rgba(var(--brand2-rgb),.14));border:1px solid rgba(var(--brand-rgb),.45);
  color:#d6cdff;font-weight:800;font-size:.85rem;padding:8px 16px;border-radius:999px;transition:background .12s ease,transform .12s ease}
.h2-backbtn:hover{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;transform:translateX(-2px)}

/* ===================== lesson plan editor clarity ===================== */
.h2-plan-chapter{border-left:3px solid rgba(var(--brand-rgb),.55)}
.h2-plan-chhead{display:flex;align-items:flex-start;gap:12px;margin-bottom:8px}
.h2-plan-chtitle{width:100%;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:var(--radius-sm);padding:9px 12px;font-size:1.05rem;font-weight:800;margin-top:4px}
.h2-plan-sublabel{margin:14px 0 2px;opacity:.7}
.h2-plan-sec{border:1px solid var(--line);border-radius:12px;padding:13px;margin-top:10px;background:var(--panel-2)}
.h2-plan-sec-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.h2-plan-sec-n{flex:0 0 auto;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:rgba(var(--brand-rgb),.2);color:var(--brand-2,#c4b5fd);font-size:.78rem;font-weight:900}
.h2-plan-sectitle{flex:1;min-width:0;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:8px;padding:8px 11px;font-size:.92rem;font-weight:700}
.h2-plan-addsec{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-top:12px;padding-top:12px;border-top:1px dashed var(--line)}
.h2-plan-chtitle:focus,.h2-plan-sectitle:focus{outline:none;border-color:rgba(var(--brand-rgb),.7);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}

/* ===================== rich lesson player ===================== */
.h2-lp{position:fixed;inset:0;z-index:99990;background:radial-gradient(120% 80% at 50% -10%,rgba(var(--brand-rgb),.14),transparent 55%),#0a0a12;overflow-y:auto;padding:18px 18px 48px}
.h2-lp-head{position:relative;display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:1000px;margin:0 auto 18px}
.h2-lp-exit{border:1px solid rgba(var(--brand-rgb),.45);background:linear-gradient(135deg,rgba(var(--brand-rgb),.22),rgba(var(--brand2-rgb),.14));color:#d6cdff;font-weight:800;font-size:.85rem;padding:8px 16px;border-radius:999px;cursor:pointer}
.h2-lp-exit:hover{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
.h2-lp-brand{position:absolute;left:50%;transform:translateX(-50%);font-weight:950;letter-spacing:.28em;font-size:.92rem;color:#cdc4f5;pointer-events:none}
.h2-lp-badge{font-size:.66rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-2,#c4b5fd);background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.4);border-radius:999px;padding:5px 12px}
.h2-lp-badge.ghost{color:var(--muted);background:transparent;border-color:var(--line)}
.h2-lp-track{position:relative;max-width:900px;margin:6px auto 0;padding:0 0 6px}
.h2-lp-rail{position:absolute;top:11px;left:39px;right:39px;height:3px;background:var(--line);border-radius:3px;overflow:hidden}
.h2-lp-railfill{height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .35s ease}
.h2-lp-stops{position:relative;height:52px}
.h2-lp-node{position:absolute;top:0;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;background:transparent;border:0;cursor:pointer;width:78px}
.h2-lp-dot{width:24px;height:24px;border-radius:50%;background:var(--panel-2);border:2px solid var(--line);display:grid;place-items:center;font-size:.66rem;font-weight:900;color:#fff;flex:0 0 auto}
.h2-lp-node.ch .h2-lp-dot{width:28px;height:28px;font-size:.78rem}
.h2-lp-node.done .h2-lp-dot{background:var(--brand);border-color:var(--brand-2);color:var(--brand-fg,#04240f)}
.h2-lp-node.current .h2-lp-dot{background:var(--brand);border-color:var(--brand-2,#c4b5fd);box-shadow:0 0 0 4px rgba(var(--brand-rgb),.3)}
.h2-lp-cap{font-size:.64rem;color:var(--muted);text-align:center;width:78px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.2}
.h2-lp-node.current .h2-lp-cap{color:#fff;font-weight:800}
.h2-lp-pct{text-align:center;color:var(--muted);font-size:.9rem;margin:14px 0 18px}
.h2-lp-pct b{color:#fff}
.h2-lp-stage{max-width:1000px;margin:0 auto}
.h2-lp-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}
.h2-lp-h1{font-size:1.9rem;font-weight:900;margin:4px 0 16px;line-height:1.12}
.h2-lp-media{width:100%;border-radius:14px;background:#000;display:block}
.h2-lp-media.pdf{height:min(70vh,640px);border:0}
.h2-lp-empty{padding:40px;text-align:center;color:var(--muted);background:var(--panel-2);border:1px dashed var(--line);border-radius:14px}
.h2-lp-markrow{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:20px;padding-top:18px;border-top:1px solid var(--line)}
.h2-lp-doneBtn{background:var(--brand);color:var(--brand-fg,#fff);border-color:var(--brand-2)}
.h2-lp-demo{color:var(--muted);font-style:italic;font-size:.82rem;margin-top:12px}
.h2-lp-bar{max-width:1000px;margin:18px auto 0;display:flex;align-items:center;gap:18px;padding:14px 16px;
  background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow)}
.h2-lp-askwrap{flex:1;display:flex;gap:8px;align-items:center;min-width:0;padding:0 12px;margin:0 6px;border-left:1px solid var(--line);border-right:1px solid var(--line)}
.h2-lp-ask{flex:1;min-width:0;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:999px;padding:11px 16px;font-size:.9rem}
.h2-lp-ask:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}
.h2-lp-dim{opacity:.4;pointer-events:none}
.h2-lp-finish{background:linear-gradient(135deg,#16a34a,#22c55e)}
@media(max-width:760px){.h2-lp-askwrap{order:3;flex-basis:100%}.h2-lp-bar{flex-wrap:wrap}.h2-lp-h1{font-size:1.45rem}}

/* editor inline inputs that live outside modals */
.h2-plan-addsec input{background:var(--field);border:1px solid var(--line);color:#fff;border-radius:var(--radius-sm);padding:10px 12px;font-size:.9rem}
.h2-plan-addsec input:focus{outline:none;border-color:rgba(var(--brand-rgb),.7);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}
.h2-plan-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}

/* ===== question card (student → teacher) ===== */
.h2-bubble.question{align-self:flex-start;max-width:min(92%,560px);padding:18px 20px;border-radius:20px;
  background:radial-gradient(circle at top left,rgba(var(--brand-rgb),.22),transparent 55%),linear-gradient(135deg,rgba(76,29,149,.55),rgba(20,20,32,.92));
  border:1px solid rgba(var(--brand2-rgb),.45);box-shadow:0 4px 16px -10px rgba(var(--brand-rgb),.32)}
.h2-bubble.question.me{align-self:flex-end}
.h2-q-eyebrow{font-size:.72rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-2,#c4b5fd);margin-bottom:8px}
.h2-q-text{font-size:1.08rem;font-weight:650;line-height:1.4;color:#f4f1ff}
.h2-q-ctx{margin-top:13px;padding-top:10px;font-size:.78rem;color:#a99fce;border-top:1px solid rgba(var(--brand2-rgb),.22)}
/* delivered / seen receipt */
.h2-seen{align-self:flex-end;font-size:.66rem;font-weight:700;color:var(--muted);margin:-2px 4px 2px}
.h2-seen.seen{color:var(--brand,#8b5cf6)}

/* ===== lesson item modal: media picker + library accordion ===== */
.h2-pick-or{margin:14px 0 6px;opacity:.7}
.h2-pick-sel{display:flex;align-items:center;gap:9px;padding:9px 12px;border:1px solid var(--line);border-radius:10px;background:var(--panel-2);margin-bottom:4px}
.h2-pick-selname{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.85rem;color:var(--text)}
.h2-pick-lib{max-height:240px;overflow-y:auto;border:1px solid var(--line);border-radius:12px;padding:6px}
.h2-pick-lib .h2-acc{margin-top:6px}
.h2-pick-lib .h2-acc:first-child{margin-top:0}
.h2-pick-files{display:flex;flex-direction:column;gap:4px;padding:6px}
.h2-pick-file{display:flex;align-items:center;gap:9px;width:100%;text-align:left;border:1px solid transparent;background:transparent;color:var(--text);
  cursor:pointer;border-radius:8px;padding:8px 10px;font-size:.85rem}
.h2-pick-file:hover{background:rgba(var(--brand-rgb),.14);border-color:rgba(var(--brand-rgb),.35)}
.h2-pick-ico{font-size:1rem}
.h2-pick-fname{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* editor: chapter name + section rows + add buttons */
.h2-plan-chname{font-size:1.1rem;font-weight:800;color:#fff;margin-top:2px}
.h2-plan-secrow{display:flex;align-items:center;gap:10px;border:1px solid var(--line);border-radius:12px;padding:11px 13px;margin-top:10px;background:var(--panel-2)}
.h2-plan-secrow-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}
.h2-plan-secrow-main strong{white-space:normal;overflow-wrap:anywhere}
/* lesson plans + preview: vertical-only scroll on phones (no sideways scroll), media fits width */
@media(max-width:759px){
  body[data-tab="lesson-plans"] .h2-view{overflow-x:hidden}
  .h2-lp,.h2-player{overflow-x:hidden}
  .h2-lp{padding-left:14px;padding-right:14px}
  .h2-player-main{max-width:100%;padding-left:16px;padding-right:16px}
  .h2-plan-cards,.h2-plan-card,.h2-lp-track,.h2-lp-sheet,.h2-plan-secrow,.h2-plan-body{max-width:100%}
  .h2-lp img,.h2-lp video,.h2-lp iframe,.h2-player-main img,.h2-player-main video,.h2-player-main iframe,.h2-player-main pre{max-width:100%;height:auto}
}

.h2-plan-addbtn{margin-top:14px}

/* ===== player: sheet-music accordion ===== */
.h2-lp-sheet{margin-top:18px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--panel-2)}
.h2-lp-sheet>summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:13px 16px;font-weight:800;color:#fff}
.h2-lp-sheet>summary::-webkit-details-marker{display:none}
.h2-lp-sheet>summary:hover{background:var(--panel)}
.h2-lp-sheet-caret{color:var(--muted);transition:transform .2s ease}
.h2-lp-sheet[open] .h2-lp-sheet-caret{transform:rotate(180deg)}
.h2-lp-sheet-body{padding:14px 16px;border-top:1px solid var(--line)}

/* ===== lesson editor drag-and-drop ===== */
.h2-drag-grip{cursor:grab;color:var(--muted);user-select:none;font-size:1.05rem;letter-spacing:-2px;flex:0 0 auto;padding:0 2px}
.h2-drag-grip:active{cursor:grabbing}
.h2-plan-chapter[draggable]{transition:opacity .12s ease,box-shadow .12s ease}
.h2-dragging{opacity:.45}
.h2-dropline{box-shadow:0 -3px 0 0 var(--brand)}
.h2-dropline-after{box-shadow:0 3px 0 0 var(--brand)}
.h2-chap-drop{outline:2px dashed rgba(var(--brand-rgb),.6);outline-offset:3px}

/* youtube/link iframes in the player render at 16:9 (not the default short iframe) */
iframe.h2-lp-media:not(.pdf){aspect-ratio:16/9;height:auto;border:0}

/* completed node turns green even while current (keeps the current ring) */
.h2-lp-node.done .h2-lp-dot{background:var(--brand);border-color:var(--brand-2);color:var(--brand-fg,#04240f)}

/* question card: tidy context + teacher open-section button */
.h2-q-ctx-plan{font-weight:800;color:var(--brand-2,#c4b5fd);font-size:.8rem;margin-bottom:3px}
.h2-q-ctx-line{font-size:.78rem;color:#a99fce;line-height:1.4}
.h2-q-open{margin-top:13px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border:0;font-weight:800}
.h2-q-open:hover{filter:brightness(1.08)}

/* admin chat logs */
.h2-chatlog-row{display:flex;gap:10px;align-items:baseline;padding:6px 8px;border-bottom:1px solid var(--line);font-size:.82rem}
.h2-chatlog-row:last-child{border-bottom:0}
.h2-chatlog-from{flex:0 0 110px;font-weight:800;color:var(--brand-2,#c4b5fd);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-chatlog-text{flex:1;min-width:0;color:var(--text);overflow-wrap:anywhere}
.h2-chatlog-at{flex:0 0 auto;color:var(--muted);font-size:.7rem}

/* question card: student name + boxed question */
.h2-q-from{font-size:1.05rem;font-weight:850;color:#fff;margin:2px 0 0;line-height:1.2}
.h2-q-box{position:relative;margin:11px 0 4px;padding:13px 15px 13px 16px;border-radius:13px;background:rgba(0,0,0,.28);
  border:1px solid rgba(var(--brand2-rgb),.28);border-left:3px solid var(--brand-2,#a78bfa);box-shadow:inset 0 1px 0 rgba(255,255,255,.04)}
.h2-q-quote{color:var(--brand-2,#a78bfa);font-weight:900;font-size:1.4rem;line-height:0;margin-right:4px;vertical-align:-2px}

/* invite/question cards inside the compact chat dock */
.h2-chatpanel-msgs .h2-bubble.invite,.h2-chatpanel-msgs .h2-bubble.question{max-width:100%;padding:14px 15px;border-radius:14px}
.h2-chatpanel-msgs .h2-invite-title{font-size:1.05rem}
.h2-chatpanel-msgs .h2-q-box{font-size:.95rem}

/* branded checkboxes + repeat-weeks picker */
.h2-check input[type=checkbox]{accent-color:var(--brand);width:18px;height:18px;cursor:pointer}
.h2-repeatrow{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.h2-weeks{width:62px;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:var(--radius-sm);padding:7px 9px;font-size:.9rem;text-align:center}
.h2-weeks:focus{outline:none;border-color:rgba(var(--brand-rgb),.7);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}

/* event reschedule date row */
.h2-evcard-reschedule{display:flex;align-items:center;gap:10px;margin-top:10px}
.h2-evcard-reschedule input[type=date]{background:var(--field);border:1px solid var(--line);color:#fff;border-radius:var(--radius-sm);padding:9px 12px;font-size:.9rem}
.h2-evcard-reschedule input[type=date]:focus{outline:none;border-color:rgba(var(--brand-rgb),.7);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}

/* ===== schedule lesson: yes/no toggles + weeks dropdown ===== */
.h2-qrow{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:9px 0}
.h2-qlabel{font-weight:800;color:var(--text);font-size:.92rem}
.h2-qhint{color:var(--muted);font-size:.74rem;flex:1;min-width:0}
.h2-yn-row{display:inline-flex;gap:6px;margin-left:auto}
.h2-yn{width:40px;height:34px;border-radius:10px;border:1px solid var(--line);background:var(--panel-2);color:var(--muted);font-size:1rem;font-weight:900;cursor:pointer;display:grid;place-items:center;transition:all .12s ease}
.h2-yn:hover{border-color:rgba(var(--brand-rgb),.5)}
.h2-yn-yes.on{background:#16a34a;border-color:#16a34a;color:#fff}
.h2-yn-no.on{background:#ef4444;border-color:#ef4444;color:#fff}
.h2-weeks-row{display:flex;align-items:center;gap:8px;margin:2px 0 8px 14px;color:var(--muted);font-size:.85rem}
.h2-weeks-sel{background:var(--field);border:1px solid var(--line);color:#fff;border-radius:var(--radius-sm);padding:8px 10px;font-size:.9rem}
.h2-weeks-sel:focus{outline:none;border-color:rgba(var(--brand-rgb),.7);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}

/* recurring frequency toggle */
.h2-freq-row{display:inline-flex;gap:4px;background:var(--panel-2);border:1px solid var(--line);border-radius:10px;padding:3px}
.h2-freq{border:0;background:transparent;color:var(--muted);font-weight:800;font-size:.8rem;padding:6px 12px;border-radius:8px;cursor:pointer}
.h2-freq.on{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}

/* ===== calendar management toolbar ===== */
.h2-cal-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:0 0 14px;padding:11px 14px;background:var(--panel);border:1px solid var(--line);border-radius:14px}
.h2-cal-toolbar-label{font-weight:900;text-transform:uppercase;letter-spacing:.09em;font-size:.64rem;color:var(--brand-2)}
.h2-cal-toolbar select,.h2-cal-search{background:var(--field);border:1px solid var(--line);color:#fff;border-radius:999px;padding:8px 14px;font-size:.85rem}
.h2-cal-search{flex:1;min-width:150px}
.h2-cal-toolbar select:disabled{opacity:.42;cursor:not-allowed}
.h2-cal-toolbar select:focus,.h2-cal-search:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}

/* lesson length custom input */
.h2-len-custom{display:inline-flex;align-items:center;gap:4px;margin-left:8px}

/* ===== schedule (event) card ===== */
.h2-bubble.schedule{align-self:flex-start;max-width:min(92%,560px);padding:18px 20px;border-radius:20px;
  background:radial-gradient(circle at top left,rgba(var(--brand-rgb),.2),transparent 55%),linear-gradient(135deg,rgba(var(--brand-rgb),.32),rgba(20,20,32,.92));
  border:1px solid rgba(var(--brand-rgb),.4);box-shadow:0 8px 30px -10px rgba(var(--brand-rgb),.45)}
.h2-bubble.schedule.me{align-self:flex-end}
.h2-sch-eyebrow{font-size:.72rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-2,#7dd3fc);margin-bottom:8px}
.h2-sch-title{font-size:1.1rem;font-weight:800;color:#f0f9ff;margin-bottom:13px;line-height:1.25}
.h2-sch-list{display:flex;flex-direction:column;gap:6px}
.h2-sch-item{display:flex;align-items:center;gap:9px;font-size:.9rem;color:#e7e2f4;padding:8px 11px;background:rgba(0,0,0,.24);border-radius:9px;border-left:2px solid var(--brand-2)}
.h2-chatpanel-msgs .h2-bubble.schedule{max-width:100%;padding:14px 15px}

/* ===== messages: in-chat search + card-type filters ===== */
.h2-chatfilter{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 14px;border-bottom:1px solid var(--line);background:var(--panel)}
.h2-chatfilter-search{flex:1;min-width:130px;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:999px;padding:8px 14px;font-size:.85rem}
.h2-chatfilter-search:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}
.h2-chatfilter-chips{display:flex;gap:6px;flex-wrap:wrap}
.h2-chatfilter-chip{border:1px solid var(--line);background:var(--panel-2);color:var(--muted);font-weight:700;font-size:.78rem;padding:6px 12px;border-radius:999px;cursor:pointer}
.h2-chatfilter-chip.on{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent}

/* dirty-aware save button states */
.h2-save-btn[disabled]{cursor:default}
.h2-save-btn[disabled]:not(.h2-save-done){opacity:.45}
.h2-save-btn.h2-save-done{background:#16a34a;border-color:#16a34a;color:#fff;opacity:1}

/* ===== schedule card state colors ===== */
.h2-bubble.schedule.sch-green{background:radial-gradient(circle at top left,rgba(var(--brand-rgb),.2),transparent 55%),linear-gradient(135deg,rgba(var(--brand-rgb),.4),rgba(20,20,32,.92));border-color:rgba(var(--brand-rgb),.45);box-shadow:0 8px 30px -10px rgba(var(--brand-rgb),.5)}
.h2-bubble.schedule.sch-green .h2-sch-eyebrow{color:var(--brand-2,#86efac)}
.h2-bubble.schedule.sch-green .h2-sch-item{border-left-color:var(--brand-2)}
.h2-bubble.schedule.sch-red{background:radial-gradient(circle at top left,color-mix(in srgb,var(--red) 20%,transparent),transparent 55%),linear-gradient(135deg,color-mix(in srgb,var(--red) 42%,#0c0c14),rgba(20,20,32,.92));border-color:color-mix(in srgb,var(--red) 45%,transparent);box-shadow:0 8px 30px -10px color-mix(in srgb,var(--red) 50%,transparent)}
.h2-bubble.schedule.sch-red .h2-sch-eyebrow{color:var(--red-ink)}
.h2-bubble.schedule.sch-red .h2-sch-title{color:#fee2e2}
.h2-bubble.schedule.sch-red .h2-sch-item{border-left-color:#ef4444}

/* ===== undo button ===== */
.h2-undo-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 18px;border-radius:999px;font-weight:700;font-size:.9rem;cursor:pointer;color:#e9d5ff;background:rgba(255,255,255,.04);border:1px solid rgba(168,139,250,.35);transition:background .15s,border-color .15s,transform .1s}
.h2-undo-btn:hover{background:rgba(168,139,250,.16);border-color:rgba(168,139,250,.6)}
.h2-undo-btn:active{transform:translateY(1px)}

/* ===== cancellation button + cancelled/red dot glow ===== */
.h2-save-btn.h2-cancel-fill{background:linear-gradient(135deg,#ef4444,#b91c1c);border:0;color:#fff;box-shadow:0 8px 22px -6px rgba(239,68,68,.6)}
.h2-save-btn.h2-cancel-fill:hover{filter:brightness(1.07)}
.h2-dot.red.glow{animation:h2-dotglow-red 1.8s ease-out infinite}
@keyframes h2-dotglow-red{0%{box-shadow:0 0 0 0 rgba(239,68,68,.55)}70%{box-shadow:0 0 0 6px rgba(239,68,68,0)}100%{box-shadow:0 0 0 0 rgba(239,68,68,0)}}

/* ===== reschedule-request state (amber) ===== */
.h2-dot.amber{background:#f59e0b}
.h2-dot.amber.glow{animation:h2-dotglow-amber 1.8s ease-out infinite}
@keyframes h2-dotglow-amber{0%{box-shadow:0 0 0 0 rgba(245,158,11,.55)}70%{box-shadow:0 0 0 6px rgba(245,158,11,0)}100%{box-shadow:0 0 0 0 rgba(245,158,11,0)}}
.h2-cal-ev.resched{color:#fcd34d;background:rgba(245,158,11,.1);border-color:rgba(245,158,11,.28)}
.h2-resched-flag{margin:4px 0 12px;padding:9px 12px;border-radius:10px;font-size:.85rem;font-weight:600;color:#fde68a;background:rgba(245,158,11,.12);border:1px solid rgba(245,158,11,.3)}
.h2-bubble.schedule.sch-amber{background:radial-gradient(circle at top left,rgba(245,158,11,.2),transparent 55%),linear-gradient(135deg,rgba(120,53,15,.5),rgba(20,20,32,.92));border-color:rgba(245,158,11,.45);box-shadow:0 8px 30px -10px rgba(245,158,11,.5)}
.h2-bubble.schedule.sch-amber .h2-sch-eyebrow{color:#fcd34d}
.h2-bubble.schedule.sch-amber .h2-sch-item{border-left-color:#f59e0b}

/* ===== branded purple scrollbars (site-wide) ===== */
*{scrollbar-width:thin;scrollbar-color:var(--brand,#7c3aed) transparent}
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-track{background:transparent}
*::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--brand-2),var(--brand));border-radius:8px;border:2px solid transparent;background-clip:padding-box}
*::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,var(--brand-2),var(--brand));background-clip:padding-box;border:2px solid transparent}
*::-webkit-scrollbar-corner{background:transparent}

/* ===== profile / account / studio shared form fields ===== */
.h2-field{display:flex;flex-direction:column;gap:6px;min-width:0}
.h2-field>span{font-size:.74rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.h2-card input,.h2-card select,.h2-card textarea,.h2-field input,.h2-field select,.h2-field textarea{
  background:var(--field);border:1px solid var(--line);color:#fff;border-radius:12px;padding:11px 14px;font-size:.95rem;font-family:inherit;width:100%}
.h2-card textarea,.h2-field textarea{resize:vertical;line-height:1.45}
.h2-card input:focus,.h2-card select:focus,.h2-card textarea:focus,.h2-field input:focus,.h2-field textarea:focus,.h2-field select:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}
.h2-prof-grid{display:grid;grid-template-columns:1fr;gap:14px;margin:6px 0 14px}
@media(min-width:680px){.h2-prof-grid{grid-template-columns:1fr 1fr}}
.h2-prof-row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.h2-prof-label{color:var(--muted);font-size:.85rem}
.h2-formrow{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

/* ===== contact card (editor preview + directory) ===== */
.h2-cc-editlayout{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:900px){.h2-cc-editlayout{grid-template-columns:1.4fr 1fr}}
.h2-cc-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media(min-width:620px){.h2-cc-grid{grid-template-columns:1fr 1fr}}
@media(min-width:1100px){.h2-cc-grid{grid-template-columns:1fr 1fr 1fr}}
.h2-cc-card,.h2-cc-preview{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden;padding-bottom:16px}
.h2-cc-banner{height:96px;background:linear-gradient(135deg,var(--brand),var(--brand-2));background-size:cover;background-position:center}
.h2-cc-pfp{width:72px;height:72px;border-radius:50%;margin:-36px 0 0 18px;border:3px solid var(--panel);background:linear-gradient(135deg,var(--brand),var(--brand-2));background-size:cover;background-position:center;display:grid;place-items:center;font-weight:800;font-size:1.5rem;color:#fff;position:relative;z-index:1}
.h2-cc-body{padding:10px 18px 0}
.h2-cc-body h3{margin:8px 0 2px}
.h2-cc-title{color:var(--brand-2);font-weight:700;margin:0 0 6px}
.h2-cc-rolepill{display:inline-block;font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--brand-2,#ddd6fe);background:rgba(var(--brand-rgb),.18);border:1px solid rgba(var(--brand-rgb),.35);border-radius:999px;padding:3px 10px}
.h2-cc-chips{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0}
.h2-cc-chip{font-size:.74rem;background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:999px;padding:4px 10px;color:#e5e7eb}
.h2-cc-body p{color:#cbd5e1;font-size:.9rem;line-height:1.5;margin:6px 0}
.h2-cc-sec{margin:10px 0}
.h2-cc-sec strong{display:block;font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:2px}

/* ===== studio settings ===== */
.h2-ss-grid{display:grid;grid-template-columns:1fr;gap:18px;align-items:start}
@media(min-width:860px){.h2-ss-grid{grid-template-columns:1.6fr 1fr}}
.h2-ss-keycard{text-align:center;display:flex;flex-direction:column;gap:10px;align-items:center}
.h2-ss-key{font-family:ui-monospace,Menlo,monospace;font-size:1.5rem;letter-spacing:.08em;color:#fff;background:rgba(var(--brand-rgb),.12);border:1px solid rgba(var(--brand-rgb),.3);border-radius:12px;padding:10px 18px}
.h2-ss-hourhead{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.h2-hours-grid{display:flex;flex-direction:column;gap:8px}
.h2-hours-row{display:flex;align-items:center;gap:14px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.02);flex-wrap:wrap}
.h2-hours-day{font-weight:700;width:110px}
.h2-hours-times{display:flex;align-items:center;gap:8px}
.h2-hours-times input{width:auto}
.h2-hours-row .h2-yn{min-width:74px}

/* ===== reschedule confirm block ===== */
.h2-resched-confirm{margin:0 0 14px;padding:12px;border-radius:12px;background:rgba(245,158,11,.08);border:1px solid rgba(245,158,11,.25)}
.h2-resched-confirm .h2-btn.primary{width:100%}

/* ===== day timeline (google-cal style) ===== */
.h2-day{display:flex;flex-direction:column;gap:14px}
.h2-day-head h2{margin:0}
.h2-mgmt-row{display:flex;gap:8px;flex-wrap:wrap}
.h2-mgmt-btn{padding:9px 15px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.04);color:#e5e7eb;font-weight:700;font-size:.85rem;cursor:pointer;transition:border-color .15s,background .15s}
.h2-mgmt-btn:hover{border-color:rgba(var(--brand-rgb),.5)}
.h2-mgmt-btn.on{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent;box-shadow:0 6px 16px -6px rgba(var(--brand-rgb),.6)}
.h2-mgmt-panel{margin-top:12px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02);padding:14px}
.h2-tl{border:1px solid var(--line);border-radius:16px;overflow:hidden;background:var(--panel)}
.h2-tl-scroll{max-height:50vh;overflow-y:auto;position:relative;padding:6px 0}
.h2-tl-grid{position:relative;margin-left:64px;margin-right:4px}
.h2-tl-hour{position:absolute;left:0;right:0;border-top:1px solid rgba(255,255,255,.06)}
.h2-tl-hour:hover{background:rgba(var(--brand-rgb),.04)}
.h2-tl-hlabel{position:absolute;left:-60px;top:-7px;width:54px;text-align:right;font-size:.66rem;color:var(--muted)}
.h2-tl-avail{position:absolute;left:4px;right:6px;background:rgba(var(--brand-rgb),.1);border-left:3px solid var(--brand-2);border-radius:6px;pointer-events:none}
.h2-tl-off{position:absolute;left:4px;right:6px;background:color-mix(in srgb,var(--red) 12%,transparent);border-left:3px solid var(--red);border-radius:6px;display:flex;align-items:center;padding:0 8px;font-size:.7rem;color:var(--red-ink);pointer-events:none}
.h2-tl-off.allday{position:static;margin:6px 6px;height:auto;padding:8px 10px}
.h2-tl-ev{position:absolute;left:8px;right:8px;border:0;border-radius:9px;padding:5px 10px;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:1px;overflow:hidden;color:#fff;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 4px 14px -4px rgba(var(--brand-rgb),.6);z-index:2;transition:transform .1s}
.h2-tl-ev:hover{transform:scale(1.01);filter:brightness(1.08)}
.h2-tl-ev.online{background:linear-gradient(135deg,var(--brand-2),var(--brand))}
.h2-tl-ev.cancelled{background:linear-gradient(135deg,color-mix(in srgb,var(--red) 72%,#000),var(--red));opacity:.9}
.h2-tl-ev.resched{background:linear-gradient(135deg,#b45309,#d97706)}
.h2-tl-ev-t{font-size:.7rem;font-weight:800;letter-spacing:.01em}
.h2-tl-ev-n{font-size:.72rem;opacity:.95;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-day-detail{margin-top:2px;max-height:42vh;overflow-y:auto;display:flex;flex-direction:column;gap:8px;padding-right:2px}
.h2-day-detail:empty{display:none}

/* ===== plan call-time chip ===== */
.h2-calltime{display:inline-block;font-weight:700;font-size:.85rem;color:var(--brand-2,#ddd6fe);background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.34);border-radius:999px;padding:6px 14px}

/* ===== 2FA status pill ===== */
.h2-2fa-status{display:inline-flex;align-items:center;font-weight:800;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;padding:6px 14px;border-radius:999px;color:#fca5a5;background:rgba(248,113,113,.12);border:1px solid rgba(248,113,113,.3)}
.h2-2fa-status.on{color:#86efac;background:rgba(34,197,94,.12);border-color:rgba(34,197,94,.32)}

/* ===== timeline 'now' line ===== */
.h2-tl-now{position:absolute;left:0;right:6px;height:0;border-top:2px solid #f43f5e;z-index:5;pointer-events:none}
.h2-tl-now-dot{position:absolute;left:-4px;top:-5px;width:10px;height:10px;border-radius:50%;background:#f43f5e;box-shadow:0 0 0 3px rgba(244,63,94,.25)}
.h2-tl-now-lbl{position:absolute;left:-58px;top:-9px;font-size:.62rem;font-weight:800;color:#fb7185;background:var(--panel);padding:0 3px;border-radius:4px}

/* ===== calendar day-cell state glows ===== */
.h2-cal-cell.cal-open{box-shadow:inset 0 0 0 1px rgba(var(--brand-rgb),.32),0 0 13px -4px rgba(var(--brand-rgb),.5)}
.h2-cal-cell.cal-has-events{box-shadow:inset 0 0 0 1px rgba(var(--brand-rgb),.3),0 0 16px -4px rgba(var(--brand-rgb),.55)}
.h2-cal-cell.cal-closed-full{box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--red) 40%,transparent),0 0 16px -3px color-mix(in srgb,var(--red) 60%,transparent)}
.h2-cal-cell.cal-closed-partial{box-shadow:inset 0 0 0 1px rgba(245,158,11,.42),0 0 16px -3px rgba(245,158,11,.6)}
.h2-cal-cell.cal-closed-reg{opacity:.62;box-shadow:inset 0 0 0 1px rgba(148,163,184,.22)}
.h2-cal-closed-lbl{display:block;font-size:.58rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em;margin-top:3px;line-height:1.2}
.h2-cal-closed-lbl.red{color:var(--red-ink)}
.h2-cal-closed-lbl.amber{color:#fcd34d}
.h2-cal-closed-lbl.green{color:var(--brand-2)}
.h2-cal-closed-lbl.muted{color:var(--muted)}
/* lesson chips: themed to the studio accent */
.h2-cal-ev:not(.cancelled):not(.resched){color:color-mix(in srgb,var(--brand-2,#c4b5fd) 38%,#ffffff)}

/* ===== calendar past days + inline status tags ===== */
.h2-cal-cell.cal-past{opacity:.6}
.h2-cal-cellhead{display:flex;align-items:center;justify-content:flex-start;gap:8px}
.h2-cal-tag{font-size:.55rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em;padding:2px 6px;border-radius:6px;white-space:nowrap;margin-top:1px}
.h2-cal-tag.off{color:var(--muted);background:rgba(255,255,255,.05)}
.h2-cal-tag.muted{color:var(--muted);background:rgba(255,255,255,.05)}
.h2-cal-tag.red{color:var(--red-ink);background:color-mix(in srgb,var(--red) 16%,transparent)}
.h2-cal-tag.amber{color:#fcd34d;background:rgba(245,158,11,.14)}
.h2-cal-tag.green{color:var(--brand-2,#86efac);background:rgba(var(--brand-rgb),.14)}
@media(max-width:760px){.h2-cal-tag{display:none}}

/* ===== lesson plan progress (student bar + teacher popup) ===== */
.h2-plan-prog{display:flex;align-items:center;gap:10px;margin-top:12px;justify-content:flex-end}
.h2-plan-prog-bar{flex:1;max-width:160px;height:7px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden}
.h2-plan-prog-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,#22c55e,#4ade80);transition:width .4s}
.h2-plan-prog-pct{font-size:.74rem;font-weight:700;color:#86efac;white-space:nowrap}
.h2-prog-students{display:flex;flex-direction:column;gap:6px;max-height:150px;overflow-y:auto;margin:10px 0}
.h2-prog-srow{display:flex;align-items:center;gap:10px;padding:9px 12px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.02);color:#fff;cursor:pointer;text-align:left}
.h2-prog-srow:hover{border-color:rgba(var(--brand-rgb),.5)}
.h2-prog-mini{width:60px;height:6px;border-radius:999px;background:rgba(255,255,255,.1);overflow:hidden}
.h2-prog-mini-fill{height:100%;background:linear-gradient(90deg,#22c55e,#4ade80)}
.h2-prog-detail{border-top:1px solid var(--line);margin-top:6px;padding-top:4px}
.h2-prog-checklist{display:flex;flex-direction:column;gap:4px;margin-top:8px;max-height:160px;overflow-y:auto}
.h2-prog-citem{display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--muted)}
.h2-prog-citem.done{color:#bbf7d0}
.h2-prog-qs{display:flex;flex-direction:column;gap:8px}
.h2-prog-q{border:1px solid var(--line);border-radius:12px;padding:10px 12px;background:rgba(255,255,255,.02)}
.h2-prog-q-ctx{font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em;color:var(--brand-2);margin-bottom:3px}
.h2-prog-q-text{font-size:.9rem;color:#e5e7eb;margin-bottom:8px;line-height:1.45}

/* ===== timeline: selected (accordion-open) lesson ===== */
.h2-tl-ev.tl-selected{box-shadow:0 0 0 2px var(--brand-2),0 0 20px -2px rgba(var(--brand-rgb),.75);z-index:3}

/* ===== timeline NEW badge (unacknowledged lesson) ===== */
.h2-tl-new{position:absolute;top:5px;right:8px;font-size:.55rem;font-weight:900;letter-spacing:.06em;color:var(--brand-fg,#0a0a12);background:var(--brand-2);border-radius:5px;padding:1px 6px;box-shadow:0 2px 8px rgba(var(--brand-rgb),.5)}
.h2-tl-ev.tl-new{animation:h2-tlnew 1.7s ease-in-out infinite}
@keyframes h2-tlnew{0%,100%{box-shadow:0 4px 14px -4px rgba(var(--brand-rgb),.45)}50%{box-shadow:0 0 0 3px rgba(var(--brand-rgb),.6),0 4px 18px -2px rgba(var(--brand-rgb),.6)}}

/* ===== reconnect pill centered over the content area (offset past the rail) ===== */
@media(min-width:880px){.h2-rc-head{left:calc(50% + var(--rail-w) / 2)}}
/* ===== lesson stage empty/ended states ===== */
.h2-stage-card{display:flex;flex-direction:column;align-items:center;gap:7px;padding:24px;max-width:340px;text-align:center}
.h2-stage-ico{width:64px;height:64px;border-radius:18px;display:grid;place-items:center;font-size:1.8rem;background:linear-gradient(135deg,rgba(var(--brand-rgb),.28),rgba(var(--brand2-rgb),.16));border:1px solid rgba(var(--brand-rgb),.4);box-shadow:0 12px 30px -10px rgba(var(--brand-rgb),.5);margin-bottom:4px}
.h2-stage-title{font-size:1.18rem;font-weight:800;color:#f3f3f8}
.h2-stage-sub{font-size:.88rem;color:var(--muted);line-height:1.5}

/* ===== library: archived rows ===== */
.h2-arch-row{display:flex;align-items:center;gap:10px;padding:10px 13px;border:1px solid var(--line);border-left:3px solid #f59e0b;border-radius:var(--radius-sm);background:rgba(255,255,255,.02)}
.h2-arch-row + .h2-arch-row{margin-top:8px}
.h2-arch-name{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.9rem;color:#e5e7eb}
.h2-arch-row .h2-mini{flex:0 0 auto}

/* ===== instruments tab ===== */
.h2-inst-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media(min-width:680px){.h2-inst-grid{grid-template-columns:1fr 1fr}}
.h2-inst-card{display:flex;align-items:center;gap:16px;text-align:left;padding:18px;border:1px solid var(--line);border-radius:18px;background:linear-gradient(135deg,rgba(var(--brand-rgb),.08),transparent),var(--panel);color:#fff;cursor:pointer;transition:transform .12s,border-color .12s,box-shadow .12s}
.h2-inst-card:hover{transform:translateY(-3px);border-color:var(--brand-2);box-shadow:0 12px 30px rgba(var(--brand-rgb),.18)}
.h2-inst-ico{width:56px;height:56px;flex:0 0 auto;border-radius:16px;display:grid;place-items:center;font-size:1.9rem;background:linear-gradient(135deg,var(--brand),var(--brand-2));box-shadow:0 10px 26px rgba(var(--brand-rgb),.4)}
.h2-inst-card h3{margin:0 0 3px}
.h2-inst-card p{margin:0;font-size:.86rem}
.h2-inst-arrow{font-size:1.3rem;color:var(--brand-2);flex:0 0 auto}
.h2-inst-bar{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.h2-inst-frame-wrap{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#06060d;height:calc(100dvh - 210px);min-height:460px}
.h2-inst-frame{width:100%;height:100%;border:0;display:block}
@media(max-width:759px){.h2-inst-frame-wrap{height:calc(100dvh - 170px - 64px - var(--safe-b))}}

/* ---- messages: composer textarea + smaller cards on mobile ---- */
.h2-composer textarea, .h2-composer .h2-msg-input{flex:1 1 auto;min-width:0;width:100%;background:var(--field);border:1px solid var(--line);color:#fff;border-radius:18px;padding:11px 15px;font-size:.95rem;font-family:inherit;line-height:1.35;resize:none;max-height:120px;overflow-y:auto}
.h2-composer textarea:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}
.h2-composer .h2-btn{flex:0 0 auto;align-self:flex-end}
@media(max-width:759px){
  .h2-composer{gap:7px;padding:10px 10px calc(10px + var(--safe-b));align-items:flex-end}
  .h2-composer textarea, .h2-composer .h2-msg-input{font-size:16px;padding:10px 13px;border-radius:16px}
  .h2-composer .h2-btn{padding:10px 14px}
  .h2-bubble{max-width:88%;font-size:.9rem}
  .h2-bubble.invite,.h2-bubble.question,.h2-bubble.schedule{max-width:90%;padding:12px 13px;border-radius:14px;box-shadow:none}
  .h2-bubble.invite .h2-invite-title,.h2-bubble.invite .h2-invite-text{font-size:.94rem;line-height:1.3}
  .h2-bubble.invite .h2-invite-sub{font-size:.78rem}
  .h2-bubble.invite .h2-btn{font-size:.84rem;padding:7px 13px}
  .h2-q-from{font-size:.92rem}
  .h2-q-text{font-size:.85rem}
  .h2-sch-title{font-size:.88rem}
  .h2-sch-item{font-size:.8rem}
  .h2-invite-eyebrow,.h2-q-eyebrow,.h2-sch-eyebrow{font-size:.6rem;margin-bottom:3px}
  .h2-bubble-time{font-size:.58rem}
}

/* ---- Students: roster cards + edit form ---- */
.h2-stu-bar{display:flex;gap:10px;align-items:center;margin:14px 0 4px;flex-wrap:wrap}
.h2-stu-search{flex:1;min-width:180px;background:color-mix(in srgb,var(--brand,#8b5cf6) 7%,#0d0d15);border:1px solid var(--line);color:#fff;border-radius:999px;padding:11px 16px;font-size:.95rem}
.h2-stu-search:focus{outline:none;border-color:color-mix(in srgb,var(--brand,#8b5cf6) 60%,transparent)}
.h2-stu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin-top:14px}
.h2-stu-card{display:flex;flex-direction:column;gap:12px;background:linear-gradient(180deg,rgba(255,255,255,.025),rgba(255,255,255,0)),var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:var(--shadow)}
.h2-stu-head{display:flex;align-items:center;gap:12px}
.h2-stu-id{flex:1;min-width:0}
.h2-stu-name{font-weight:800;font-size:1.02rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-stu-sub{font-size:.8rem;color:var(--muted);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-stu-level{flex:0 0 auto;font-size:.66rem;font-weight:900;text-transform:uppercase;letter-spacing:.06em;padding:4px 9px;border-radius:999px;border:1px solid var(--line);color:var(--brand-2,#c4b5fd);background:rgba(var(--brand-rgb),.14)}
.h2-stu-level.lv-beginner{color:#86efac;background:rgba(34,197,94,.14);border-color:rgba(34,197,94,.4)}
.h2-stu-level.lv-intermediate{color:#fcd34d;background:rgba(245,158,11,.14);border-color:rgba(245,158,11,.4)}
.h2-stu-level.lv-advanced{color:#fca5a5;background:rgba(248,113,113,.14);border-color:rgba(248,113,113,.4)}
.h2-stu-body{display:flex;flex-direction:column;gap:6px;padding-top:2px;border-top:1px solid var(--line)}
.h2-stu-meta{display:flex;align-items:center;gap:8px;font-size:.84rem;color:var(--text);min-width:0}
.h2-stu-meta a{color:var(--brand-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.h2-stu-ico{color:var(--muted);flex:0 0 auto}
.h2-stu-notes{font-size:.82rem;color:var(--muted);line-height:1.4;white-space:pre-wrap}
.h2-stu-foot{display:flex;gap:8px;align-items:center;margin-top:auto;flex-wrap:wrap}
.h2-stu-foot .h2-stu-del{margin-left:auto;padding:7px 10px}
.h2-field{display:flex;flex-direction:column;gap:5px;font-size:.82rem;font-weight:700;color:var(--muted);margin-top:10px}
.h2-field span{font-weight:800}
.h2-field-row{display:flex;gap:12px}.h2-field-row .h2-field{flex:1;min-width:0}
.h2-pop-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}
@media(max-width:600px){.h2-stu-grid{grid-template-columns:1fr}.h2-field-row{flex-direction:column;gap:0}}

.h2-btn.sec{background:#242433;border:1px solid var(--line);color:#fff}

/* ---- Lessons: in-room piano (roll dock + floating panel) ---- */
.h2-inst-dock{position:relative}
.h2-inst-wrap{position:fixed;z-index:55;left:20px;top:88px;display:block;width:max-content;max-width:100vw;box-shadow:0 24px 60px rgba(0,0,0,.55)}
.h2-inst-bar{position:relative;z-index:3;display:flex;align-items:center;gap:6px;padding:5px 10px;min-height:42px;background:var(--panel);border:1px solid var(--line);border-bottom:0;border-radius:14px 14px 0 0}
.h2-inst-dock:not(.roll) .h2-inst-bar{cursor:move}
.h2-inst-title{font-weight:800;flex:0 0 auto;white-space:nowrap}
.h2-inst-btn2{border:1px solid var(--line);background:#242433;color:#fff;border-radius:8px;padding:6px 11px;font-size:.78rem;font-weight:700;cursor:pointer;line-height:1.2}
.h2-inst-btn2:hover{border-color:var(--brand-2)}
.h2-inst-close{border:1px solid var(--line);background:#242433;color:#fff;border-radius:8px;width:30px;height:30px;cursor:pointer;display:grid;place-items:center;font-size:1rem}
.h2-inst-close:hover{border-color:var(--brand-2)}
.h2-inst-stage{position:relative;width:760px;height:430px;max-width:100vw;background:#0b0b12;border:1px solid var(--line);border-radius:0 0 14px 14px;overflow:hidden}
.h2-inst-frame{width:100%;height:100%;border:0;display:block}
/* roll mode: pinned to the bottom, full width, keyboard only */
.h2-inst-dock.roll .h2-inst-wrap{left:0;top:auto;right:0;bottom:0;width:100vw;max-width:100vw;z-index:100000;box-shadow:0 -12px 34px rgba(0,0,0,.5)}
.h2-inst-dock.roll .h2-inst-bar{border-radius:0;border-left:0;border-right:0}
/* MacBook 14"/16" + mid widths: don't smush the dock bar — keep buttons sized, scroll horizontally, chord inline */
@media(max-width:1800px){
  .h2-inst-dock.roll .h2-inst-bar{flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden}
  .h2-inst-dock.roll .h2-inst-bar::-webkit-scrollbar{height:0}
  .h2-inst-dock.roll .h2-inst-bar > *{flex:0 0 auto}
  .h2-inst-dock.roll .h2-inst-chordwrap{position:static;transform:none;flex:0 0 auto}
  .h2-inst-dock.roll .h2-inst-right{flex-wrap:nowrap}
  .h2-inst-dock.roll .h2-inst-btn2{white-space:nowrap}
}

.h2-inst-dock.roll .h2-inst-stage{width:100vw!important;height:calc(var(--roll-h,210px) + 18px)!important;max-height:calc(55vh + 18px);margin-top:-18px;border-radius:0;border-left:0;border-right:0;border-top:0}
@media(min-width:880px){.h2-inst-dock.roll .h2-inst-wrap{left:var(--rail-w);width:calc(100vw - var(--rail-w))}.h2-inst-dock.roll .h2-inst-stage{width:calc(100vw - var(--rail-w))!important}}
.h2-inst-dock.roll .h2-grab{display:none}
.h2-inst-dock.roll .only-float{display:none}
.h2-inst-dock:not(.roll) .only-roll{display:none}
/* roll header controls + top resizer */
.h2-inst-rollgrab{display:none;position:relative;height:4px;cursor:ns-resize;background:linear-gradient(180deg,rgba(var(--brand2-rgb),.6),rgba(var(--brand2-rgb),.95));box-shadow:0 0 11px 1px rgba(var(--brand2-rgb),.75);touch-action:none}
/* fat invisible touch target so the thin resizer bar is easy to grab */
.h2-inst-rollgrab::before{content:'';position:absolute;left:0;right:0;top:-14px;bottom:-10px}
.h2-inst-dock.roll .h2-inst-rollgrab{display:block}
.h2-inst-selbtn{font-weight:800}
.h2-inst-menu{position:fixed;z-index:100002;background:#15151f;border:1px solid var(--line);border-radius:12px;padding:6px;box-shadow:0 18px 50px rgba(0,0,0,.6);display:flex;flex-direction:column;gap:3px;min-width:160px}
.h2-inst-menu-item{border:0;background:transparent;color:#e7e7f2;text-align:left;padding:10px 13px;border-radius:8px;font-weight:700;font-size:.92rem;cursor:pointer}
.h2-inst-menu-item:hover{background:#23233a}
.h2-inst-menu-item.on{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff}

.h2-inst-cc{width:52px;height:30px;border:1px solid var(--line);background:#161620;color:#e7e7f2;border-radius:8px;text-align:center;font-weight:800;font-size:.78rem;padding:0 4px}
.h2-inst-cc::placeholder{color:#6b6b80;font-weight:700}
.h2-inst-cc:focus{outline:none;border-color:var(--brand2)}
.h2-leslie::before{content:'\27F3';display:inline-block;margin-right:5px}
.h2-leslie.on{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;border-color:transparent}
.h2-leslie.on::before{animation:h2spin .55s linear infinite}
@keyframes h2spin{to{transform:rotate(360deg)}}

/* bigger resize hit-areas + handles for touch / mobile */
@media(max-width:760px){
  .h2-inst-rollgrab{height:14px}
  .h2-grab-right{width:24px;right:-8px}
  .h2-grab-bottom{height:24px;bottom:-8px}
  .h2-grab-corner{width:38px;height:38px;right:-8px;bottom:-8px}
}

.h2-inst-vol{width:92px;max-width:30vw;accent-color:var(--brand-2)}
.h2-inst-lbl.off{opacity:.42}
.h2-inst-chordwrap{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;align-items:center;gap:7px;pointer-events:auto}
.h2-inst-dock.roll .h2-inst-title{display:none!important}
.h2-inst-chord{font-weight:900;font-size:1.05rem;color:var(--brand-2,#c4b5fd);min-width:30px;text-align:center;white-space:nowrap}
.h2-inst-single.on{background:var(--brand);color:#fff;border-color:transparent}
.h2-inst-chordtog.off{opacity:.4}
.h2-inst-gear{font-size:1rem}
@media(max-width:760px){.h2-inst-wrap{top:60px}}
@media(max-width:560px){.h2-inst-dock.roll .h2-inst-title{display:none}.h2-inst-vol{width:64px}}

/* ---- Messages: hide floating chat dock on the tab + mobile fullscreen ---- */
body[data-tab="messages"] .h2-chatfab,body[data-tab="messages"] .h2-chatpanel{display:none!important}
.h2-msg-fs{display:none;margin-left:auto}
@media(max-width:759px){.h2-msg-fs{display:inline-flex}}
body.h2-msgs-full .h2-topbar,body.h2-msgs-full .h2-bottomnav{display:none!important}
body.h2-msgs-full .h2-main{padding-bottom:0!important}
body.h2-msgs-full .h2-view{padding:0!important;max-width:none!important;margin:0!important}
body.h2-msgs-full .h2-msgs{height:100dvh!important;border-radius:0!important;border-left:0;border-right:0;min-height:0}

/* ---- Messages mobile: flex-fill so the chat & list actually scroll ---- */
@media(max-width:759px){
  body[data-tab="messages"] .h2-view{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;padding:8px;max-width:none!important}
  body[data-tab="messages"] .h2-msgs{height:auto!important;flex:1 1 auto;min-height:0}
  .h2-chat,.h2-conv-list,.h2-chat-body{-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
}
body.h2-msgs-full .h2-msgs{height:auto!important;flex:1 1 auto!important;min-height:0;border-radius:0!important;border-left:0;border-right:0}

.h2-room-tools{display:flex;justify-content:center;gap:10px;margin:0 0 14px}
.h2-open-piano{padding:11px 28px;font-size:.98rem}
.h2-room-spacer{height:120px}

.h2-inst-right{margin-left:auto;display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}
@media(max-width:620px){.h2-inst-bar{flex-wrap:nowrap;overflow-x:auto;overflow-y:hidden;gap:5px;padding:3px 7px;min-height:38px}.h2-inst-chordwrap{position:static;transform:none;order:2;flex:0 0 auto}.h2-inst-right{flex-wrap:nowrap;flex:0 0 auto}.h2-inst-btn2{padding:5px 8px;font-size:.72rem;white-space:nowrap}.h2-inst-vol{width:58px}.h2-inst-bar::-webkit-scrollbar{height:0}}

/* ---- branded purple scrollbars (sitewide) ---- */
*{scrollbar-width:thin;scrollbar-color:#a855f7 rgba(255,255,255,.05)}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:rgba(255,255,255,.04)}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#7c3aed,#a855f7);border-radius:99px;border:2px solid transparent;background-clip:padding-box}
::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,#8b5cf6,#c084fc);background-clip:padding-box}

/* fullscreen video makes room for the open piano-roll dock */
body.h2-fs-roll .h2-stage-fs{top:0!important;bottom:var(--roll-dock-h,0px)!important;height:auto!important}
body.h2-fs-roll .h2-inst-dock.roll .h2-inst-wrap{left:0!important;width:100vw!important}
body.h2-fs-roll .h2-inst-dock.roll .h2-inst-stage{width:100vw!important}

/* ---- fullscreen instrument launcher (next to the ⛶ fullscreen button) ---- */
.h2-fs-fab{display:none;position:fixed;top:8px;left:50px;z-index:100002;flex-direction:column;align-items:flex-start;gap:8px}
body.h2-fs-open .h2-fs-fab{display:flex}
.h2-fs-fab-btn{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:grid;place-items:center;font-size:1.05rem;cursor:pointer;box-shadow:0 6px 18px color-mix(in srgb,var(--brand,#8b5cf6) 50%,transparent)}
.h2-fs-fab-menu{display:none;flex-direction:column;gap:6px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:7px;min-width:150px;box-shadow:var(--shadow)}
.h2-fs-fab:hover .h2-fs-fab-menu,.h2-fs-fab:focus-within .h2-fs-fab-menu{display:flex}
.h2-fs-fab-item{display:flex;align-items:center;gap:9px;width:100%;text-align:left;background:#242433;border:1px solid var(--line);color:#fff;border-radius:9px;padding:9px 12px;font-weight:800;cursor:pointer}
.h2-fs-fab-item:hover{border-color:var(--brand-2)}

/* student view-only piano dock: keyboard only, no controls */
.h2-inst-viewer .h2-inst-gear,.h2-inst-viewer .h2-inst-right{display:none!important}
.h2-inst-viewer .h2-inst-chordtog,.h2-inst-viewer .h2-inst-single{display:none!important}
.h2-inst-viewer .h2-inst-bar{justify-content:center}
.h2-inst-viewer .h2-inst-chord{font-size:1.15rem}
.h2-inst-viewer .h2-inst-title::after{content:' \2014 teacher';color:var(--muted);font-weight:600;font-size:.8rem}

.h2-snd-pick{min-width:44px}
.h2-snd-pick.on{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent}

/* ---- Library storage meter ---- */
.h2-storage{margin:14px 0 4px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px 15px}
.h2-storage-row{display:flex;justify-content:space-between;align-items:center;font-weight:800;font-size:.9rem;margin-bottom:8px}
.h2-storage-num{color:var(--muted);font-weight:700;font-size:.85rem}
.h2-storage-bar{height:9px;border-radius:999px;background:rgba(255,255,255,.06);overflow:hidden}
.h2-storage-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .3s}
.h2-storage-fill.full{background:linear-gradient(90deg,#f59e0b,#ef4444)}

/* student invite list (studio settings) */
.h2-stu-list{display:flex;flex-direction:column;gap:8px;margin-top:14px}
.h2-stu-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;background:#101019;border:1px solid var(--line);border-radius:12px;padding:11px 14px}
.h2-stu-info{display:flex;flex-direction:column;gap:2px;min-width:0}
.h2-stu-info strong{font-size:.95rem}
.h2-stu-info .h2-muted{font-size:.8rem}
.h2-stu-actions{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.h2-stu-badge{font-size:.72rem;font-weight:800;padding:3px 10px;border-radius:999px;white-space:nowrap}
.h2-stu-badge.pending{background:rgba(240,178,122,.16);color:#f0b27a;border:1px solid rgba(240,178,122,.4)}
.h2-stu-badge.expired{background:rgba(248,113,113,.14);color:#f87171;border:1px solid rgba(248,113,113,.4)}
.h2-stu-badge.active{background:rgba(34,197,94,.14);color:#4ade80;border:1px solid rgba(34,197,94,.4)}
.h2-stu-badge.nologin{background:rgba(154,154,178,.12);color:#9a9ab2;border:1px solid rgba(154,154,178,.32)}
.h2-btn-sm{padding:6px 12px;font-size:.78rem}

/* ===== left-rail colour-grouped accordion nav (desktop rail only) ===== */
.h2-nav-group{display:flex;flex-direction:column}
.h2-nav-group-head{display:flex;align-items:center;gap:8px;width:100%;background:none;border:0;cursor:pointer;color:var(--muted);font-weight:800;font-size:.64rem;text-transform:uppercase;letter-spacing:.1em;padding:13px 10px 5px;text-align:left}
.h2-nav-group-head:hover{color:#fff}
.h2-nav-group-dot{width:7px;height:7px;border-radius:50%;background:var(--gc);box-shadow:0 0 9px var(--gc);flex:0 0 auto}
.h2-nav-group-label{flex:1}
.h2-nav-group-chev{opacity:.55;transition:transform .2s;font-size:1.05rem;line-height:1}
.h2-nav-group.open .h2-nav-group-chev{transform:rotate(90deg)}
.h2-nav-group-body{display:none;flex-direction:column;gap:3px;margin:2px 0 6px 7px;padding-left:9px;border-left:2px solid var(--gc)}
.h2-nav-group.open .h2-nav-group-body{display:flex}
.h2-rail .h2-nav-group .h2-nav-ico{color:var(--gc);opacity:.85}
.h2-rail .h2-nav-group .h2-nav-item.active{background:rgba(255,255,255,.05);color:#fff;box-shadow:inset 3px 0 0 var(--gc)}
.h2-rail .h2-nav-group .h2-nav-item.active .h2-nav-ico{opacity:1;filter:drop-shadow(0 0 6px var(--gc))}
.h2-rail a[data-tab="dashboard"].h2-nav-solo{border:1px solid rgba(var(--brand2-rgb),.35);background:linear-gradient(135deg,rgba(var(--brand2-rgb),.16),rgba(var(--brand2-rgb),.04));margin-bottom:6px}
.h2-rail a[data-tab="dashboard"].h2-nav-solo .h2-nav-ico{color:var(--brand-2,#c4b5fd)}
.h2-rail a[data-tab="dashboard"].h2-nav-solo.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 10px 26px rgba(var(--brand-rgb),.4)}
.h2-rail a[data-tab="dashboard"].h2-nav-solo.active .h2-nav-ico{color:#fff}
.h2-rail a[data-tab="admin"].h2-nav-solo{margin-top:4px}
.h2-rail a[data-tab="admin"].h2-nav-solo .h2-nav-ico{color:#818cf8}
.h2-rail a[data-tab="admin"].h2-nav-solo.active{background:linear-gradient(135deg,#4f46e5,#818cf8);color:#fff}

/* ===== dashboard: colour-coded sections with descriptions ===== */
.h2-dgroup{margin-top:26px}
.h2-dgroup-head{display:flex;align-items:center;gap:10px;margin:0 0 14px}
.h2-dgroup-head h2{margin:0;font-size:1.05rem;font-weight:850}
.h2-dgroup-dot{width:10px;height:10px;border-radius:50%;background:var(--gc);box-shadow:0 0 12px var(--gc)}
.h2-dgrid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:640px){.h2-dgrid{grid-template-columns:1fr 1fr}}
@media(min-width:1000px){.h2-dgrid{grid-template-columns:1fr 1fr 1fr}}
.h2-dtile{display:flex;gap:14px;align-items:flex-start;padding:16px 16px 16px 18px;background:linear-gradient(180deg,rgba(255,255,255,.025),transparent),var(--panel);border:1px solid var(--line);border-radius:16px;text-decoration:none;color:var(--text);transition:transform .14s,border-color .14s,box-shadow .14s;position:relative;overflow:hidden}
.h2-dtile::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--gc)}
.h2-dtile:hover{transform:translateY(-3px);border-color:var(--gc);box-shadow:0 18px 44px -20px var(--gc)}
.h2-dtile-ico{width:42px;height:42px;flex:0 0 auto;display:grid;place-items:center;border-radius:12px;font-size:1.25rem;color:#fff;background:var(--gc);box-shadow:0 8px 20px -6px var(--gc)}
.h2-dtile-txt h3{margin:0;font-size:1rem;font-weight:800}
.h2-dtile-txt p{margin:4px 0 0;font-size:.82rem;color:var(--muted);line-height:1.45}

/* calendar: clear status colour bar per cell on mobile (tag text is hidden there) */
@media(max-width:760px){
  .h2-cal-cell.cal-open{border-top:2px solid rgba(var(--brand-rgb),.65)}
  .h2-cal-cell.cal-closed-full{border-top:2px solid color-mix(in srgb,var(--red) 75%,transparent)}
  .h2-cal-cell.cal-closed-partial{border-top:2px solid rgba(245,158,11,.75)}
  .h2-cal-cell.cal-closed-reg{border-top:2px solid rgba(148,163,184,.5)}
}
/* timeline: clickable empty hours */
.h2-tl-hour.click{cursor:pointer}
.h2-tl-hour.click:hover{background:rgba(var(--brand-rgb),.09)}
/* schedule form: clear, highlighted Time row */
.h2-qrow.h2-sched-time{background:rgba(var(--brand-rgb),.09);border:1px solid rgba(var(--brand-rgb),.28);border-radius:10px;padding:9px 11px}
.h2-qrow.h2-sched-time .h2-qlabel{color:var(--brand-2,#c4b5fd);font-weight:800;font-size:.9rem}

/* floating chat bubble: swipe-to-tuck + arrow tab + scroll lock */
.h2-chatfab{touch-action:none;transition:transform .32s cubic-bezier(.22,1,.36,1)}
.h2-chatfab.hidden{transform:translateX(130px)!important;opacity:0;pointer-events:none}
.h2-chatfab-tab{position:fixed;right:0;bottom:calc(38px + var(--safe-b));z-index:79;width:24px;height:48px;border:0;border-radius:13px 0 0 13px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:var(--brand-fg,#fff);cursor:pointer;display:none;align-items:center;justify-content:center;font-size:1.15rem;box-shadow:-5px 6px 20px color-mix(in srgb,var(--brand,#7c3aed) 45%,transparent);animation:h2-tabpulse 2.4s ease-in-out infinite}
.h2-chatfab-tab.show{display:flex}
@keyframes h2-tabpulse{0%,100%{transform:translateX(0)}50%{transform:translateX(-3px)}}
@media(max-width:760px){.h2-chatfab-tab{bottom:calc(78px + var(--safe-b))}body.h2-chatlock{overflow:hidden}}

/* lessons room video stage: phone = no horizontal scaling, fits the margins, vertical resize only */
@media(max-width:760px){
  .h2-stage{width:100%!important;max-width:100%!important;min-width:0!important}
  .h2-stage-wrap{width:100%!important;max-width:100%!important;overflow:visible}
  .h2-grab-right,.h2-grab-corner{display:none!important}
}

/* lesson preview: badge below logo, per-chapter progress segments, prev/next split, calendar month */
.h2-lp-subbar{display:flex;justify-content:center;max-width:1000px;margin:-8px auto 8px}
.h2-lp-railseg{position:absolute;top:11px;height:3px;background:var(--line);border-radius:3px;overflow:hidden}
.h2-lp-bar{flex-direction:column;align-items:stretch;gap:12px}
.h2-lp-nav{display:flex;justify-content:space-between;gap:10px;align-items:center}
.h2-lp-nav .h2-btn{flex:0 0 auto;min-width:120px}
.h2-lp-askwrap{padding:0;margin:0;border-left:0;border-right:0}
.h2-cal-bar{position:relative;justify-content:space-between}
.h2-cal-navl{display:flex;gap:10px;align-items:center}
.h2-cal-month{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);font-size:1.65rem;font-weight:900;white-space:nowrap;pointer-events:none;letter-spacing:-.01em}
@media(max-width:760px){.h2-cal-month{font-size:1.3rem}}

/* numbered lesson panels */
.h2-panel-head{display:flex;align-items:center;gap:8px}
.h2-panel-num{width:20px;height:20px;flex:0 0 auto;display:grid;place-items:center;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:.72rem;font-weight:900;box-shadow:0 4px 10px -3px var(--brand)}
/* MIDI sync status */
.h2-midi-status{display:flex;align-items:center;gap:8px;font-size:.82rem;font-weight:700;margin:2px 0 10px}
.h2-midi-dot{width:9px;height:9px;border-radius:50%;background:#9a9ab2;flex:0 0 auto}
.h2-midi-status.connecting{color:#fcd34d}.h2-midi-status.connecting .h2-midi-dot{background:#f59e0b;animation:h2-midipulse 1.2s ease-in-out infinite}
.h2-midi-status.connected{color:#86efac}.h2-midi-status.connected .h2-midi-dot{background:#22c55e;box-shadow:0 0 8px #22c55e}
.h2-midi-status.disconnected{color:#fca5a5}.h2-midi-status.disconnected .h2-midi-dot{background:#ef4444}
@keyframes h2-midipulse{0%,100%{opacity:1}50%{opacity:.35}}
/* student-progress popup header + close */
.h2-prog-head{display:flex;align-items:flex-start;gap:10px;margin-bottom:12px}
.h2-prog-close{flex:0 0 auto;width:34px;height:34px;border:1px solid var(--line);background:var(--panel-2);color:#fff;border-radius:9px;font-size:1.3rem;line-height:1;cursor:pointer}
.h2-prog-close:hover{border-color:var(--brand-2)}

.h2-leslie-cc.learn{background:linear-gradient(135deg,var(--brand),var(--brand2))!important;color:#fff!important;border-color:transparent!important}

/* schedule-lesson form close X (purple) */
.h2-sched-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:-2px 0 10px}
.h2-sched-x{flex:0 0 auto;width:32px;height:32px;border:0;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;font-size:1.2rem;line-height:1;cursor:pointer;box-shadow:0 6px 16px -5px rgba(var(--brand-rgb),.7)}
.h2-sched-x:hover{filter:brightness(1.1)}

/* tab transitions: centered spinner (no body text) + smooth blur-in */
.h2-load{display:flex;align-items:center;justify-content:center;min-height:46vh}
@keyframes h2fade{from{opacity:0;filter:blur(5px)}to{opacity:1;filter:blur(0)}}
.h2-view.h2-fadein{animation:h2fade .26s cubic-bezier(.22,.61,.36,1)}
@media (prefers-reduced-motion:reduce){.h2-view.h2-fadein{animation:opacity-only .25s ease}@keyframes opacity-only{from{opacity:0}to{opacity:1}}}
/* lesson preview: hide stepper captions on mobile, keep just the circles */
@media (max-width:760px){.h2-lp-cap{font-size:.6rem}}

/* expired lesson-invite -> dotted ghost bubble (keeps the data, both roles) */
.h2-bubble.invite-ghost{align-self:flex-start;display:inline-flex;align-items:center;gap:8px;max-width:78%;padding:8px 13px;border:1px dashed rgba(154,154,178,.45);border-radius:13px;background:transparent;color:var(--muted);font-size:.82rem;font-weight:600}
.h2-bubble.invite-ghost.me{align-self:flex-end}
.h2-ghost-ico{opacity:.6}
.h2-ghost-txt{opacity:.85;letter-spacing:.01em}
/* reset-progress buttons (double-tap arm) */
.h2-lp-resetrow{display:flex;justify-content:center;margin:0 0 8px}
.h2-lp-reset,.h2-prog-reset{border:1px solid rgba(248,113,113,.4);background:rgba(239,68,68,.1);color:#fecaca;border-radius:999px;padding:6px 15px;font-weight:800;font-size:.8rem;cursor:pointer;transition:all .15s}
.h2-lp-reset:hover,.h2-prog-reset:hover{border-color:rgba(248,113,113,.7);background:rgba(239,68,68,.18)}
.h2-lp-reset.arm,.h2-prog-reset.arm{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;border-color:transparent;box-shadow:0 0 14px -2px rgba(239,68,68,.7)}
.h2-prog-resetrow{margin:10px 0 4px}

/* Docs & FAQ */
.h2-docs{max-width:860px;margin:0 auto}
.h2-doc-acc{background:var(--panel);border:1px solid var(--line);border-radius:14px;margin-top:12px;overflow:hidden}
.h2-doc-acc[open]{border-color:rgba(var(--brand-rgb),.4);box-shadow:0 10px 30px -18px rgba(var(--brand-rgb),.5)}
.h2-doc-sum{list-style:none;display:flex;align-items:center;gap:12px;padding:15px 17px;cursor:pointer;font-weight:800;font-size:1rem;color:#fff;user-select:none}
.h2-doc-sum::-webkit-details-marker{display:none}
.h2-doc-sum-ico{font-size:1.15rem;width:24px;text-align:center}
.h2-doc-sum-t{flex:1;min-width:0}
.h2-doc-sum-chev{color:var(--brand-2);transition:transform .2s;font-size:1.1rem}
.h2-doc-acc[open] .h2-doc-sum-chev{transform:rotate(180deg)}
.h2-doc-body{padding:2px 19px 18px;border-top:1px solid var(--line)}
.h2-doc-h3{color:#fff;font-size:1rem;margin:16px 0 4px}
.h2-doc-p{color:var(--muted);line-height:1.65;margin:9px 0}
.h2-doc-p strong,.h2-faq-a strong{color:#e7e7f2}
.h2-doc-ul{margin:8px 0 8px 2px;padding-left:18px;display:flex;flex-direction:column;gap:7px}
.h2-doc-ul li{color:var(--muted);line-height:1.55}
.h2-doc-link{color:var(--brand-2);text-decoration:none;border-bottom:1px solid rgba(var(--brand-rgb),.4)}
.h2-doc-link:hover{color:#fff;border-bottom-color:#fff}
.h2-faq-item{border:1px solid var(--line);border-radius:11px;margin:8px 0;background:#13131d}
.h2-faq-q{list-style:none;cursor:pointer;padding:12px 14px;font-weight:700;color:#e7e7f2;font-size:.92rem}
.h2-faq-q::-webkit-details-marker{display:none}
.h2-faq-q::before{content:'+';color:var(--brand-2);font-weight:900;margin-right:9px}
.h2-faq-item[open] .h2-faq-q::before{content:'\2212'}
.h2-faq-a{padding:0 14px 12px 30px}
.h2-faq-a .h2-doc-p{margin:4px 0}
@media (max-width:760px){.h2-docs{max-width:100%}.h2-doc-body{padding:2px 14px 16px}}

/* login front-wrapper: Parent Portal coming-soon badge */
.h2-login .nc-soon{font-size:.62rem;font-weight:900;letter-spacing:.06em;text-transform:uppercase;color:var(--brand-2);border:1px solid var(--brand-2);border-radius:999px;padding:1px 8px;margin-left:7px;vertical-align:middle}

/* lessons viewport — audio/mix overlay button + bubble */
.h2-stage-mixbtn{position:absolute;z-index:8;top:8px;left:48px;width:34px;height:34px;border-radius:9px;border:1px solid var(--line);background:rgba(16,16,24,.72);color:#fff;cursor:pointer;font-size:1.02rem;display:grid;place-items:center}
.h2-stage-mixbtn:hover{border-color:var(--brand-2)}
.h2-fs-active .h2-stage-mixbtn{top:14px;left:54px}
.h2-mix-bubble{position:fixed;z-index:100004;width:288px;max-width:92vw;background:linear-gradient(180deg,#181824,#101019);border:1px solid var(--line);border-radius:16px;box-shadow:0 28px 64px rgba(0,0,0,.66);padding:14px}
.h2-mix-head{font-weight:800;color:#fff;font-size:.95rem;margin:0 2px 10px}
.h2-mix-row{margin:0 0 12px}
.h2-mix-lbl{font-size:.78rem;font-weight:800;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px}
.h2-mix-sl{display:flex;align-items:center;gap:10px}
.h2-mix-slider{-webkit-appearance:none;appearance:none;flex:1;height:9px;border-radius:7px;cursor:pointer;outline:none;background:linear-gradient(90deg,var(--brand-2),var(--brand)) 0/var(--p,100%) 100% no-repeat,#0a0a11;box-shadow:inset 0 1px 3px rgba(0,0,0,.85)}
.h2-mix-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:19px;height:19px;border-radius:50%;background:radial-gradient(circle at 36% 30%,#fafaff,#cfcfdd 38%,#7a7a90 78%,#4a4a5c);border:1px solid #1c1c26;box-shadow:0 2px 5px rgba(0,0,0,.6),0 0 10px rgba(var(--brand-rgb),.5);margin-top:-5px}
.h2-mix-slider::-moz-range-thumb{width:19px;height:19px;border:1px solid #1c1c26;border-radius:50%;background:radial-gradient(circle at 36% 30%,#fafaff,#cfcfdd 38%,#7a7a90 78%,#4a4a5c)}
.h2-mix-val{min-width:40px;text-align:right;font-weight:800;font-size:.82rem;color:#e7e7f2}
.h2-mix-insts{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.h2-mix-inst{border:1px solid var(--line);background:#14141e;color:#cfcfe0;border-radius:10px;padding:9px 10px;font-weight:700;font-size:.84rem;cursor:pointer;transition:border-color .14s,background .14s}
.h2-mix-inst:hover{border-color:rgba(var(--brand-rgb),.5)}
.h2-mix-inst.on{border-color:transparent;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}

/* student card reset-progress */
.h2-plan-resetrow{display:flex;justify-content:flex-end;margin:0 0 7px}
.h2-plan-reset{border:1px solid rgba(248,113,113,.4);background:rgba(239,68,68,.1);color:#fecaca;border-radius:999px;padding:5px 13px;font-weight:800;font-size:.74rem;cursor:pointer;transition:all .15s}
.h2-plan-reset:hover{border-color:rgba(248,113,113,.7);background:rgba(239,68,68,.18)}
.h2-plan-reset.arm{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;border-color:transparent;box-shadow:0 0 12px -2px rgba(239,68,68,.7)}

/* library upload rights acknowledgment */
.h2-lib-rights{display:flex;align-items:flex-start;gap:9px;margin:10px 2px 2px;font-size:.84rem;color:var(--muted);line-height:1.4;cursor:pointer}
.h2-lib-rights input{margin-top:3px;width:16px;height:16px;accent-color:var(--brand-2);flex:0 0 auto;cursor:pointer}
.h2-lib-rights-warn{color:#fca5a5}

/* upload confirm modal */
.h2-modal-ov{position:fixed;inset:0;z-index:100050;background:rgba(6,6,10,.66);backdrop-filter:blur(4px);display:grid;place-items:center;padding:20px;animation:h2fade .2s ease}
.h2-up-modal{width:min(440px,100%);background:linear-gradient(180deg,#191925,#101019);border:1px solid var(--line);border-radius:18px;box-shadow:0 30px 70px rgba(0,0,0,.7);padding:20px}
.h2-up-modal-head{display:flex;align-items:center;gap:11px;margin-bottom:12px}
.h2-up-modal-ico{font-size:1.5rem}
.h2-up-modal-head h3{margin:0;font-size:1.15rem;color:#fff}
.h2-up-modal-files{display:flex;flex-direction:column;gap:5px;max-height:150px;overflow:auto;margin-bottom:12px}
.h2-up-modal-file{font-size:.86rem;color:#cfcfe0;background:#13131d;border:1px solid var(--line);border-radius:9px;padding:7px 11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-up-modal .h2-lib-rights{margin:6px 2px 14px}
.h2-up-modal-actions{display:flex;justify-content:flex-end;gap:9px}
.h2-lib-rights.shake{animation:h2shake .42s}
@keyframes h2shake{0%,100%{transform:translateX(0)}20%,60%{transform:translateX(-6px)}40%,80%{transform:translateX(6px)}}

/* bottom-of-page upload progress bar */
.h2-upbar{position:fixed;left:0;right:0;bottom:0;z-index:100040;height:44px;background:rgba(14,14,22,.96);border-top:1px solid var(--line);box-shadow:0 -10px 30px rgba(0,0,0,.4);display:flex;align-items:center;transition:transform .42s ease;overflow:hidden}
.h2-upbar.hide{transform:translateY(100%)}
.h2-upbar-fill{position:absolute;left:0;top:0;bottom:0;width:0;background:linear-gradient(90deg,rgba(var(--brand-rgb),.32),rgba(var(--brand2-rgb),.42));transition:width .2s ease}
.h2-upbar.done .h2-upbar-fill{background:linear-gradient(90deg,rgba(52,211,153,.3),rgba(16,185,129,.4))}
.h2-upbar.err .h2-upbar-fill{background:linear-gradient(90deg,rgba(239,68,68,.3),rgba(220,38,38,.4));width:100%!important}
.h2-upbar-txt{position:relative;z-index:1;padding:0 18px;font-weight:800;font-size:.9rem;color:#fff;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.h2-upbar.done .h2-upbar-txt{color:#6ee7b7}

@media (min-width:880px){.h2-upbar{left:var(--rail-w)}}

/* admin: expandable activity log */
.h2-log-item{border:1px solid var(--line);border-left:3px solid #34d399;border-radius:10px;background:var(--panel);margin-bottom:7px;overflow:hidden}
.h2-log-item.off{border-left-color:#f87171}
.h2-log-sum{list-style:none;cursor:pointer;padding:10px 13px;font-size:.84rem;font-weight:600;color:#e7e7f2}
.h2-log-sum::-webkit-details-marker{display:none}
.h2-log-sum::before{content:'▸';color:var(--brand-2);margin-right:8px;font-size:.8rem}
.h2-log-item[open] .h2-log-sum::before{content:'▾'}
.h2-log-json{margin:0;padding:10px 14px;background:#0c0c14;border-top:1px solid var(--line);color:#bae6fd;font-family:ui-monospace,monospace;font-size:.74rem;white-space:pre-wrap;overflow-wrap:anywhere}

/* fullscreen viewport: center the mix + fullscreen buttons horizontally */
.h2-stage-fs .h2-stage-mixbtn{top:12px;left:calc(50% - 40px);right:auto}
.h2-stage-fs .h2-stage-fs-btn{top:12px;left:calc(50% + 6px)}

/* topbar title never clips the right-side controls */
.h2-topbar-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* mobile slide-in menu drawer (full nav, like desktop sidebar) */
.h2-menu-btn{display:none;width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:var(--panel-2);color:#fff;font-size:1.25rem;cursor:pointer;place-items:center;flex:0 0 auto}
.h2-rail-backdrop{display:none}
@media (max-width:879px){
  .h2-menu-btn{display:grid}
  .h2-topbar-role,.h2-signout{display:none}
  .h2-rail{display:flex;flex-direction:column;position:fixed;left:0;top:0;bottom:0;width:min(284px,84vw);z-index:100060;transform:translateX(-100%);transition:transform .26s cubic-bezier(.22,.61,.36,1);background:var(--panel);border-right:1px solid var(--line);padding:18px 12px;box-shadow:0 0 44px rgba(0,0,0,.6);overflow-y:auto}
  body.h2-rail-open .h2-rail{transform:none}
  body.h2-rail-open .h2-rail-backdrop{display:block;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:100055;backdrop-filter:blur(2px)}
}

/* admin logs grouped by date */
.h2-log-date{border:1px solid var(--line);border-radius:12px;margin-bottom:9px;overflow:hidden;background:#13131d}
.h2-log-datesum{list-style:none;cursor:pointer;padding:12px 15px;font-weight:800;color:#fff;font-size:.92rem}
.h2-log-datesum::-webkit-details-marker{display:none}
.h2-log-datesum::before{content:'▸';color:var(--brand-2);margin-right:9px}
.h2-log-date[open]>.h2-log-datesum::before{content:'▾'}
.h2-log-datebody{padding:2px 12px 12px}

/* mobile header back button (left of title, pushes title over) */
.h2-back-btn{display:none}
@media (max-width:879px){
  .h2-back-btn{display:grid;width:38px;height:38px;border-radius:11px;border:1px solid var(--line);background:var(--panel-2);color:#fff;font-size:1.25rem;cursor:pointer;place-items:center;flex:0 0 auto;margin-right:6px}
  .h2-back-btn.h2-hide{display:none}
}
/* chat hidden tab is swipeable */
.h2-chatfab-tab{touch-action:none;transition:transform .3s cubic-bezier(.22,1,.36,1)}

/* ===== mobile menu drawer — full nav styling + polish ===== */
@media (max-width:879px){
  .h2-rail{background:linear-gradient(180deg,rgba(var(--brand-rgb),.16),transparent 32%),linear-gradient(180deg,#181826,#101019);gap:2px}
  .h2-brand{display:flex;align-items:center;gap:10px;font-weight:900;font-size:1.2rem;padding:4px 8px 14px;letter-spacing:-.02em}
  .h2-rail-nav{display:flex;flex-direction:column;gap:4px;flex:0 1 auto;overflow-y:auto;margin-right:-12px;padding-right:12px}
  .h2-rail .h2-nav-item{display:flex;align-items:center;gap:12px;padding:12px 13px;border-radius:var(--radius-sm);color:var(--muted);font-weight:700;font-size:.95rem}
  .h2-rail .h2-nav-item:hover,.h2-rail .h2-nav-item:active{background:var(--panel-2);color:#fff}
  .h2-rail .h2-nav-item.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;box-shadow:0 8px 22px -8px rgba(var(--brand-rgb),.6)}
  .h2-rail .h2-nav-ico{width:22px;text-align:center;flex:0 0 auto}
  .h2-rail .h2-nav-label{flex:1;min-width:0}
  .h2-rail-foot{border-top:1px solid var(--line);margin-top:auto;padding-top:14px;display:flex;flex-direction:column;gap:10px}
  .h2-acct{font-weight:800;font-size:.92rem;padding:0 4px;color:#fff}
  .h2-logout{color:#fff;font-size:.88rem;font-weight:700;background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand2-rgb),.4);border-radius:12px;padding:12px;cursor:pointer}
  .h2-logout:active{background:rgba(var(--brand-rgb),.28)}
  body.h2-rail-open .h2-rail-backdrop{backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);background:rgba(8,6,16,.5)}
  /* back button: purple with a glow */
  .h2-back-btn{background:linear-gradient(135deg,var(--brand),var(--brand-2));border-color:transparent;color:#fff;box-shadow:0 6px 18px rgba(var(--brand-rgb),.55),0 0 0 1px rgba(var(--brand2-rgb),.45)}
  .h2-back-btn:active{filter:brightness(1.1)}
}

/* lock background scroll while the mobile menu drawer is open (drawer itself still scrolls) */
@media (max-width:879px){ body.h2-rail-open{overflow:hidden} }
@media (max-width:879px){
  .h2-topbar{gap:6px;padding:10px 10px}
  .h2-topbar-role{display:none}
  .h2-topbar-title{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.95rem}
  .h2-topbar > div:last-child{flex:0 0 auto}
  .h2-admin-studios .h2-as-label{display:none}
  .h2-admin-studios{padding:7px 10px;font-size:1rem}
}
/* branded notification bell icon */
.h2-bell-ico{display:grid;place-items:center;color:var(--brand-2,#c4b5fd)}
.h2-bell:hover .h2-bell-ico{color:#fff}

/* ===== Assignments ===== */
.h2-asg-list{display:flex;flex-direction:column;gap:12px}
.h2-asg-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.h2-asg-card.complete{border-color:rgba(52,211,153,.45)}
.h2-asg-head{list-style:none;cursor:pointer;display:flex;align-items:center;gap:14px;padding:15px 17px}
.h2-asg-head::-webkit-details-marker{display:none}
.h2-asg-head-main{flex:1;min-width:0}
.h2-asg-title{font-weight:800;font-size:1.02rem;color:#fff}
.h2-asg-sub{color:var(--muted);font-size:.85rem;margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.h2-asg-meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.78rem;margin-top:5px}
.h2-asg-done{color:#6ee7b7;font-weight:800}
.h2-asg-prog{display:flex;align-items:center;gap:8px;flex:0 0 auto;width:118px}
.h2-asg-prog-bar{flex:1;height:7px;border-radius:5px;background:var(--field);overflow:hidden}
.h2-asg-prog-fill{height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));border-radius:5px;transition:width .3s}
.h2-asg-card.complete .h2-asg-prog-fill{background:linear-gradient(90deg,#34d399,#10b981)}
.h2-asg-prog-pct{font-size:.78rem;font-weight:800;color:#cfcfe0;min-width:32px;text-align:right}
.h2-asg-body{padding:4px 17px 16px;border-top:1px solid var(--line)}
.h2-asg-task{display:flex;align-items:center;gap:11px;padding:9px 4px;border-bottom:1px solid rgba(255,255,255,.05)}
.h2-asg-task:last-child{border-bottom:0}
.h2-asg-task.done .h2-asg-tasktext{color:var(--muted);text-decoration:line-through}
.h2-asg-check{width:26px;height:26px;border-radius:8px;border:1px solid var(--line);background:#13131d;color:#6ee7b7;display:grid;place-items:center;font-weight:900;cursor:pointer;flex:0 0 auto}
.h2-asg-check.on{background:linear-gradient(135deg,#34d399,#10b981);border-color:transparent;color:#06281c}
.h2-asg-tasktext{flex:1;min-width:0}
.h2-asg-ask{margin-left:auto;border:1px solid var(--line);background:var(--panel-2);color:var(--brand-2,#c4b5fd);border-radius:8px;padding:6px 11px;font-size:.76rem;font-weight:700;cursor:pointer;flex:0 0 auto}
.h2-asg-ask:hover{border-color:var(--brand-2);color:#fff}
.h2-asg-files{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.h2-asg-edit-tasks{display:flex;flex-direction:column;gap:6px}
.h2-asg-edit-files{display:flex;flex-wrap:wrap;gap:6px}
.h2-asg-filebtn{border:1px solid var(--line);background:#13131d;color:#cfcfe0;border-radius:9px;padding:7px 10px;font-size:.8rem;cursor:pointer}
.h2-asg-filebtn.on{border-color:transparent;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
@media (max-width:600px){.h2-asg-prog{width:84px}.h2-asg-prog-pct{display:none}}

/* assignment submissions + grading */
.h2-asg-submit{border:1px solid var(--line);background:var(--panel-2);color:#9bd;border-radius:8px;padding:6px 11px;font-size:.76rem;font-weight:700;cursor:pointer;flex:0 0 auto}
.h2-asg-submit:hover{border-color:var(--brand-2);color:#fff}
.h2-asg-subs{display:flex;flex-direction:column;gap:6px;margin:2px 0 6px 37px}
.h2-asg-sub{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#0f0f18;border:1px solid var(--line);border-radius:9px;padding:7px 11px;font-size:.82rem}
.h2-asg-sub-file{color:#93c5fd;font-weight:700;text-decoration:none}
.h2-asg-sub-file:hover{color:#fff}
.h2-asg-sub-who{color:var(--muted);font-size:.76rem}
.h2-asg-grade{margin-left:auto;color:#6ee7b7;font-weight:800;font-size:.78rem}
.h2-asg-pending{margin-left:auto;color:var(--muted);font-size:.74rem;font-style:italic}
.h2-asg-gradebtn{margin-left:auto;border:1px solid rgba(var(--brand2-rgb),.4);background:rgba(var(--brand-rgb),.14);color:var(--brand-2,#c4b5fd);border-radius:8px;padding:5px 12px;font-size:.76rem;font-weight:800;cursor:pointer}
.h2-asg-gradebtn:hover{background:rgba(var(--brand-rgb),.26);color:#fff}

/* assignment message card */
.h2-bubble.assignment{align-self:flex-start;background:linear-gradient(135deg,rgba(var(--brand-rgb),.18),rgba(20,20,32,.5));border:1px solid rgba(var(--brand2-rgb),.4);border-radius:16px;padding:13px 15px;max-width:84%;box-shadow:0 4px 16px -12px rgba(var(--brand-rgb),.3)}
.h2-bubble.assignment.me{align-self:flex-end}
.h2-asgmsg-eyebrow{font-size:.68rem;font-weight:900;letter-spacing:.12em;text-transform:uppercase;color:var(--brand-2,#c4b5fd)}
.h2-asgmsg-from{font-weight:800;color:#fff;margin:3px 0 6px}
.h2-asgmsg-text{color:#e7e7f2;line-height:1.45}
.h2-asgmsg-open{margin-top:10px}

/* assignment editor: per-task title/desc/file dropzone + student chips */
.h2-asg-stuchips,.h2-asg-edit-files{display:flex;flex-wrap:wrap;gap:7px}
.h2-asg-stuchip{border:1px solid var(--line);background:#13131d;color:#cfcfe0;border-radius:999px;padding:7px 14px;font-size:.84rem;font-weight:700;cursor:pointer}
.h2-asg-stuchip.on{border-color:transparent;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
.h2-asg-edit-tasks{display:flex;flex-direction:column;gap:10px}
.h2-asg-edit-task{border:1px solid var(--line);border-radius:13px;background:#0f0f18;padding:12px;display:flex;flex-direction:column;gap:8px}
.h2-asg-edit-tasktop{display:flex;align-items:center;gap:9px}
.h2-asg-tasknum{width:24px;height:24px;border-radius:7px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;display:grid;place-items:center;font-weight:900;font-size:.82rem;flex:0 0 auto}
.h2-asg-dz{border:1.5px dashed rgba(var(--brand2-rgb),.4);border-radius:10px;padding:11px;text-align:center;cursor:pointer;background:rgba(var(--brand-rgb),.05);transition:border-color .15s,background .15s}
.h2-asg-dz:hover,.h2-asg-dz.over{border-color:var(--brand-2);background:rgba(var(--brand-rgb),.12)}
.h2-asg-dz.busy{opacity:.6;pointer-events:none}
.h2-asg-dz-label{color:var(--brand-2,#b9a8ff);font-size:.82rem;font-weight:700}
.h2-asg-fchip{display:flex;align-items:center;justify-content:space-between;gap:10px;color:#e7e7f2;font-size:.86rem;font-weight:700}
.h2-asg-fchip button{border:0;background:rgba(239,68,68,.18);color:#fecaca;border-radius:7px;width:24px;height:24px;cursor:pointer}

/* assignment card: task title/desc/file + per-student sections */
.h2-asg-taskmeta{flex:1;min-width:0}
.h2-asg-tasktitle{font-weight:700;color:#fff}
.h2-asg-taskdesc{color:var(--muted);font-size:.82rem;margin-top:2px}
.h2-asg-taskfile{display:inline-block;margin-top:4px;color:#93c5fd;font-size:.8rem;font-weight:700;text-decoration:none}
.h2-asg-taskfile:hover{color:#fff}
.h2-asg-taskact{display:flex;gap:7px;flex:0 0 auto;align-self:flex-start}
.h2-asg-task.done .h2-asg-tasktitle{color:var(--muted);text-decoration:line-through}
.h2-asg-seclabel{margin:14px 0 6px;font-size:.7rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.h2-asg-students{display:flex;flex-direction:column;gap:7px}
.h2-asg-stu{border:1px solid var(--line);border-radius:11px;background:#0f0f18;overflow:hidden}
.h2-asg-stu-head{display:flex;align-items:center;gap:12px;padding:10px 13px;border-bottom:1px solid var(--line)}
.h2-asg-stu-head::-webkit-details-marker{display:none}
.h2-asg-stu-name{flex:1;min-width:0;font-weight:700;color:#fff;font-size:.9rem}
.h2-asg-stu-prog{display:flex;align-items:center;gap:8px;flex:0 0 auto;width:120px}
.h2-asg-stu-bar{flex:1;height:6px;border-radius:4px;background:#06060c;overflow:hidden}
.h2-asg-stu-fill{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .6s cubic-bezier(.4,0,.2,1)}
.h2-asg-stu-pct{font-size:.74rem;font-weight:800;color:#cfcfe0;min-width:30px;text-align:right}
.h2-asg-stu-body{padding:10px 13px 12px;display:flex;flex-direction:column;gap:7px}
.h2-asg-stu-empty{font-size:.8rem;color:#8a83a6;margin:0;font-style:italic}
.h2-asg-sub-task{color:var(--muted);font-size:.74rem}

/* ============ Sitewide library file picker (explorer popup) ============ */
.h2-lpk-ov{position:fixed;inset:0;z-index:100080;display:flex;align-items:center;justify-content:center;background:rgba(6,6,12,.66);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);padding:18px;animation:h2lpkIn .14s ease}
@keyframes h2lpkIn{from{opacity:0}to{opacity:1}}
.h2-lpk{width:min(520px,100%);max-height:78vh;display:flex;flex-direction:column;background:linear-gradient(180deg,#15131f,#0e0d16);border:1px solid var(--line);border-radius:18px;box-shadow:0 24px 70px rgba(0,0,0,.6),0 0 0 1px rgba(var(--brand-rgb),.08);overflow:hidden}
.h2-lpk-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px 16px;border-bottom:1px solid var(--line)}
.h2-lpk-title{font-weight:800;font-size:1rem;letter-spacing:.2px}
.h2-lpk-x{width:30px;height:30px;border-radius:50%;border:1px solid var(--line);background:#1a1824;color:#cfc7e6;font-size:.9rem;cursor:pointer}
.h2-lpk-x:hover{background:#241f33;color:#fff}
.h2-lpk-bc{display:flex;flex-wrap:wrap;align-items:center;gap:4px;padding:9px 14px;border-bottom:1px solid var(--line);font-size:.82rem}
.h2-lpk-crumb{background:none;border:0;color:#b9aee0;cursor:pointer;padding:3px 7px;border-radius:7px;font-weight:600}
.h2-lpk-crumb:hover{background:#221d33;color:#fff}
.h2-lpk-crumb.on{color:#fff;background:rgba(var(--brand-rgb),.18)}
.h2-lpk-sep{color:#6b6486;font-size:.8rem}
.h2-lpk-list{flex:1;overflow-y:auto;padding:8px;display:flex;flex-direction:column;gap:4px}
.h2-lpk-row{display:flex;align-items:center;gap:11px;width:100%;text-align:left;padding:11px 13px;border-radius:11px;border:1px solid transparent;background:#14121d;color:#ece8f6;cursor:pointer;font-size:.92rem;transition:background .12s,border-color .12s,transform .06s}
.h2-lpk-row:hover{background:#1d1930;border-color:rgba(var(--brand-rgb),.4)}
.h2-lpk-row:active{transform:scale(.995)}
.h2-lpk-row.folder{font-weight:700}
.h2-lpk-row.up{background:transparent;color:#9b93b8;font-size:.86rem}
.h2-lpk-row.up:hover{background:#1a1726}
.h2-lpk-ico{width:22px;text-align:center;flex:0 0 auto;font-size:1.02rem}
.h2-lpk-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.h2-lpk-arrow{color:#7d76a0;font-size:1.1rem;flex:0 0 auto}
.h2-lpk-row.file.on{border-color:rgba(var(--brand-rgb),.55);background:rgba(var(--brand-rgb),.12)}
.h2-lpk-check{color:#b69bff;font-weight:800;flex:0 0 auto}
.h2-lpk-empty{color:#8a83a6;text-align:center;padding:26px 10px;font-size:.88rem}
.h2-lpk-foot{padding:12px 14px;border-top:1px solid var(--line);display:flex;justify-content:flex-end}
.h2-lpk-trigger{display:inline-flex;align-items:center;gap:7px}

/* ============ Assignment editor sections ============ */
.h2-asg-section{background:rgba(255,255,255,.022);border:1px solid var(--line);border-radius:14px;padding:14px 15px 16px;margin-top:14px}
.h2-asg-sectitle{font-size:.72rem;font-weight:800;letter-spacing:1.4px;text-transform:uppercase;color:#9b8fce;margin-bottom:10px;padding-bottom:8px;border-bottom:1px solid rgba(var(--brand-rgb),.16)}
.h2-asg-section .h2-field{margin-top:12px}
.h2-asg-section .h2-field:first-of-type{margin-top:2px}
.h2-asg-ovfiles{display:flex;flex-direction:column;gap:9px}
.h2-asg-filelist{display:flex;flex-direction:column;gap:6px}
.h2-asg-fileitem{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 11px;border-radius:9px;background:#14121d;border:1px solid var(--line)}
.h2-asg-fileitem-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.88rem;color:#e7e2f4}
.h2-asg-fileitem-x{width:24px;height:24px;border-radius:50%;border:1px solid var(--line);background:#1c1828;color:#bdb4d8;cursor:pointer;flex:0 0 auto;font-size:.78rem}
.h2-asg-fileitem-x:hover{background:#2a2240;color:#fff}

/* ---- picker: svg folder icon, search + type filter, result paths ---- */
.h2-fi{display:inline-flex;align-items:center;justify-content:center;width:1.15em;height:1.15em;color:var(--brand-2,#c8a8ff);flex:0 0 auto}
.h2-fi svg{width:100%;height:100%;display:block}
.h2-lpk-trigger .h2-fi{margin-right:1px}
.h2-lpk-ico .h2-fi{width:1.05rem;height:1.05rem}
.h2-lpk-tools{display:flex;gap:8px;padding:11px 14px 4px}
.h2-lpk-search{flex:1;min-width:0;padding:9px 12px;border-radius:9px;border:1px solid var(--line);background:var(--field);color:#fff;font-size:.9rem}
.h2-lpk-search:focus{outline:none;border-color:rgba(var(--brand-rgb),.55);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.14)}
.h2-lpk-search::placeholder{color:#7d7699}
.h2-lpk-type{flex:0 0 auto;max-width:42%;padding:9px 10px;border-radius:9px;border:1px solid var(--line);background:var(--field);color:#e7e2f4;font-size:.86rem;cursor:pointer}
.h2-lpk-type:focus{outline:none;border-color:rgba(var(--brand-rgb),.55)}
.h2-lpk-name{display:flex;flex-direction:column;gap:1px}
.h2-lpk-path{font-size:.72rem;color:#8a83a6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---- picker: multi-select model (checkbox, counts, bulk, folder hint) ---- */
.h2-lpk-box{width:20px;height:20px;flex:0 0 auto;border-radius:6px;border:1.6px solid #4a4366;background:#0e0d16;display:inline-flex;align-items:center;justify-content:center;font-size:.72rem;color:#fff;font-weight:800}
.h2-lpk-box.on{background:linear-gradient(160deg,var(--brand-2),var(--brand));border-color:var(--brand-2);box-shadow:0 0 0 3px rgba(var(--brand-rgb),.18)}
.h2-lpk-row.file.on{border-color:rgba(var(--brand-rgb),.5);background:rgba(var(--brand-rgb),.12)}
.h2-lpk-row.folder.has-sel{border-color:rgba(var(--brand-rgb),.4)}
.h2-lpk-dot{width:8px;height:8px;border-radius:50%;flex:0 0 auto;background:linear-gradient(160deg,var(--brand-2),var(--brand));box-shadow:0 0 8px rgba(var(--brand-rgb),.7);margin-left:auto}
.h2-lpk-row.folder.has-sel .h2-lpk-arrow{margin-left:8px}
.h2-lpk-bulk{display:flex;gap:8px;padding:2px 2px 8px;border-bottom:1px solid var(--line);margin-bottom:4px}
.h2-lpk-bulkbtn{flex:1;padding:7px 10px;border-radius:8px;border:1px solid var(--line);background:var(--panel-2);color:var(--text);font-size:.8rem;font-weight:600;cursor:pointer}
.h2-lpk-bulkbtn:hover:not(:disabled){background:#1e1a2e;color:#fff;border-color:rgba(var(--brand-rgb),.4)}
.h2-lpk-bulkbtn:disabled{opacity:.4;cursor:default}
.h2-lpk-foot{align-items:center;gap:10px}
.h2-lpk-count{font-size:.84rem;font-weight:700;color:var(--brand-2,#b9aee0)}
.h2-lpk-clear{padding:6px 12px;border-radius:8px;border:1px solid var(--line);background:#171423;color:#d7cdf0;font-size:.8rem;font-weight:600;cursor:pointer}
.h2-lpk-clear:hover:not(.off){background:#241c38;color:#fff}
.h2-lpk-clear.off{opacity:.4;cursor:default}

/* ---- assignment editor: selected-student chips + people-picker trigger ---- */
.h2-asg-stusel{display:flex;flex-direction:column;gap:9px}
.h2-asg-stuchips{display:flex;flex-wrap:wrap;gap:7px}
.h2-asg-stuchip{display:inline-flex;align-items:center;gap:7px;padding:6px 8px 6px 12px;border-radius:999px;font-size:.86rem;font-weight:600;background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.4);color:#ece8f6}
.h2-asg-stuchip.on{background:linear-gradient(135deg,rgba(var(--brand-rgb),.32),rgba(var(--brand-rgb),.2))}
.h2-asg-stuchip-x{width:20px;height:20px;border-radius:50%;border:0;background:rgba(0,0,0,.28);color:#e7defb;cursor:pointer;font-size:.7rem;display:inline-flex;align-items:center;justify-content:center}
.h2-asg-stuchip-x:hover{background:rgba(0,0,0,.5);color:#fff}

/* ---- question card: actions row, reply button, deep-link ---- */
.h2-q-acts{display:flex;flex-wrap:wrap;gap:8px;margin-top:13px}
.h2-q-openasg{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border:0;font-weight:800}
.h2-q-openasg:hover{filter:brightness(1.08)}
.h2-q-reply{background:#1b1730;border:1px solid rgba(var(--brand2-rgb),.4);color:#d8ccff;font-weight:700}
.h2-q-reply:hover{background:#241d3e;color:#fff}
.h2-q-replyquote{margin-top:12px;padding:10px 13px;border-left:3px solid rgba(var(--brand2-rgb),.55);background:rgba(var(--brand-rgb),.1);border-radius:0 9px 9px 0;color:#d9d2ee;font-size:.9rem;line-height:1.4}

/* ---- assignment deep-link flash ---- */
.h2-asg-flash{animation:h2asgFlash 1.6s ease}
@keyframes h2asgFlash{0%,100%{box-shadow:0 0 0 0 rgba(var(--brand-rgb),0)}25%{box-shadow:0 0 0 3px rgba(var(--brand-rgb),.5),0 10px 30px -10px rgba(var(--brand-rgb),.5)}}

/* ---- student filter button (people-picker trigger as a filter control) ---- */
.h2-stu-filter{display:inline-flex;align-items:center;gap:5px;padding:8px 12px}
.h2-stu-filter .h2-fi{width:1em;height:1em}
.h2-stu-filter-x{margin-left:4px;width:18px;height:18px;border-radius:50%;background:rgba(var(--brand-rgb),.25);color:#e7defb;font-size:.66rem;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.h2-stu-filter-x:hover{background:rgba(var(--brand-rgb),.5);color:#fff}

/* ===== Phase 3: assignment ↔ lesson-plan linking ===== */
/* editor link control on chapters/sections */
.h2-plan-asglink{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:8px 0 4px;padding:8px 10px;border:1px dashed rgba(var(--brand-rgb),.3);border-radius:10px;background:rgba(var(--brand-rgb),.05)}
.h2-plan-seclink{padding:0 0 6px 30px}
.h2-plan-seclink .h2-plan-asglink{margin-top:0}
.h2-plan-asgchips{display:flex;flex-wrap:wrap;gap:6px}
.h2-plan-asgchip{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:999px;font-size:.78rem;font-weight:600;text-decoration:none;background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.38);color:#e2dafc}
.h2-plan-asgchip:hover{background:rgba(var(--brand-rgb),.3);color:#fff}

/* player assignment panel */
.h2-lp-asg{margin-top:16px;border-top:1px solid rgba(var(--brand2-rgb),.22);padding-top:14px}
.h2-lp-asg-head{font-size:.72rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase;color:var(--brand-2,#c4b5fd);margin-bottom:10px}
.h2-lp-asg-block{background:rgba(var(--brand-rgb),.08);border:1px solid rgba(var(--brand2-rgb),.3);border-radius:14px;padding:13px 15px;margin-bottom:10px}
.h2-lp-asg-titlerow{display:flex;align-items:center;justify-content:space-between;gap:10px}
.h2-lp-asg-title{font-weight:800;color:#fff;font-size:1.02rem}
.h2-lp-asg-count{font-size:.8rem;font-weight:700;color:var(--brand-2,#b9aee0);background:rgba(0,0,0,.25);padding:2px 9px;border-radius:999px}
.h2-lp-asg-task{display:flex;align-items:flex-start;gap:11px;padding:8px 0;border-top:1px solid rgba(var(--brand2-rgb),.14)}
.h2-lp-asg-task:first-of-type{border-top:0}
.h2-lp-asg-check{flex:0 0 auto;width:24px;height:24px;border-radius:7px;border:1.6px solid #5a5278;background:#0e0d16;color:#fff;font-weight:800;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;font-size:.8rem}
.h2-lp-asg-check.on{background:linear-gradient(160deg,var(--brand-2),var(--brand));border-color:var(--brand-2)}
.h2-lp-asg-check:disabled{cursor:default;opacity:.7}
.h2-lp-asg-task.done .h2-lp-asg-tt{text-decoration:line-through;color:#9b93b8}
.h2-lp-asg-tt{font-weight:600;color:#ece8f6}
.h2-lp-asg-td{font-size:.82rem;color:#a99fce;margin-top:2px}
.h2-lp-asg-open{margin-top:10px}

/* ===== Phase 3b: gates, in-player submit/ask, embeds ===== */
/* editor gate rows */
.h2-asg-gate{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.h2-asg-gaterow{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:.9rem;color:#e7e2f4;cursor:pointer}
.h2-asg-gaterow input[type=checkbox]{width:18px;height:18px;accent-color:#8b5cf6;cursor:pointer}
.h2-asg-gaterow.sub{padding-left:18px}
.h2-asg-gatehint{font-size:.76rem;color:#8a83a6;flex-basis:100%;padding-left:27px;margin-top:-4px}

/* player: gate badge */
.h2-lp-asg-gate{display:inline-block;margin:6px 0 2px;font-size:.74rem;font-weight:800;letter-spacing:.04em;padding:3px 10px;border-radius:999px;background:rgba(245,158,11,.16);border:1px solid rgba(245,158,11,.45);color:#fcd34d}
.h2-lp-asg-gate.ok{background:rgba(52,211,153,.14);border-color:rgba(52,211,153,.45);color:#6ee7b7}
.h2-btn.h2-lp-locked{opacity:.85;background:linear-gradient(135deg,#6b7280,#4b5563);box-shadow:none}

/* player: per-task actions, submitted line, file embed */
.h2-lp-asg-taskact{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.h2-lp-asg-subline{margin-top:7px;font-size:.8rem;font-weight:700;color:#9fe0c0}
.h2-lp-asg-subline.pass{color:#6ee7b7}
.h2-lp-asg-embed{margin-top:9px;border-radius:10px;overflow:hidden}
.h2-lp-asg-embed .h2-lp-media{width:100%;max-height:320px;border-radius:10px;background:#000}
.h2-lp-asg-embed img.h2-lp-media{object-fit:contain}

/* player: lightweight modal */
.h2-lp-modal-back{position:fixed;inset:0;z-index:100090;display:flex;align-items:center;justify-content:center;padding:18px;background:rgba(6,6,12,.7);backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}
.h2-lp-modal{position:relative;width:min(500px,100%);max-height:84vh;overflow-y:auto;background:linear-gradient(180deg,#15131f,#0e0d16);border:1px solid var(--line);border-radius:18px;padding:20px;box-shadow:0 24px 70px rgba(0,0,0,.6)}
.h2-lp-modal h2{margin:0 0 4px}
.h2-lp-modal-x{position:absolute;top:12px;right:12px;width:30px;height:30px;border-radius:50%;border:1px solid var(--line);background:#1a1824;color:#cfc7e6;font-size:1.1rem;cursor:pointer}
.h2-lp-modal-x:hover{background:#241f33;color:#fff}

/* player: section-ask clarification */
.h2-lp-askcol{display:flex;flex-direction:column;gap:6px;flex:1;min-width:0}
.h2-lp-askhint{font-size:.74rem;color:#8a83a6;line-height:1.35}

/* ---- lesson-plan editor: linked-assignment gate rows ---- */
.h2-plan-asgrows{display:flex;flex-direction:column;gap:7px;flex-basis:100%;margin-top:2px}
.h2-plan-asgrow{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:7px 10px;border-radius:9px;background:rgba(var(--brand-rgb),.07);border:1px solid rgba(var(--brand-rgb),.2)}
.h2-plan-asgrow .h2-plan-asgchip{margin-right:auto}
.h2-plan-gatecb{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;color:#d3cbe9;cursor:pointer;white-space:nowrap}
.h2-plan-gatecb input[type=checkbox]{width:16px;height:16px;accent-color:#8b5cf6;cursor:pointer}
.h2-plan-gatecb input:disabled{cursor:default}
.h2-plan-gatecb input:disabled + span{opacity:.45}

/* ===== Phase 3b+: reveal timing, node states, start chapter, retry ===== */
/* stepper node status colors */
.h2-lp-node.await .h2-lp-dot{background:#ec4899;border-color:#f9a8d4;box-shadow:0 0 0 4px rgba(236,72,153,.25)}
.h2-lp-node.fail .h2-lp-dot{background:#3b82f6;border-color:#93c5fd;box-shadow:0 0 0 4px rgba(59,130,246,.28)}
.h2-lp-node.await .h2-lp-cap{color:#f9a8d4}
.h2-lp-node.fail .h2-lp-cap{color:#93c5fd}

/* start chapter button */
.h2-btn.h2-lp-startch{font-size:1.02rem;padding:13px 26px;box-shadow:0 6px 20px -8px rgba(var(--brand-rgb),.7)}

/* assignment reveal pending note */
.h2-lp-asg-pending{margin-top:16px;display:flex;align-items:center;gap:10px;padding:13px 16px;border:1px dashed rgba(var(--brand2-rgb),.35);border-radius:12px;background:rgba(var(--brand-rgb),.06);color:#b9aee0;font-size:.9rem}
.h2-lp-asg-pending-ico{font-size:1.1rem}

/* requirement note + states */
.h2-lp-asg-note{font-size:.82rem;font-weight:600;color:#cdbef2;margin:4px 0 8px;padding:7px 11px;border-radius:9px;background:rgba(var(--brand-rgb),.1);border-left:3px solid rgba(var(--brand2-rgb),.5)}
.h2-lp-asg-gate.fail{background:rgba(59,130,246,.16);border-color:rgba(59,130,246,.5);color:#93c5fd}
.h2-lp-asg-gate.await{background:rgba(236,72,153,.14);border-color:rgba(236,72,153,.5);color:#f9a8d4}
.h2-lp-asg-block.fail{border-color:rgba(59,130,246,.45)}
.h2-lp-asg-block.await{border-color:rgba(236,72,153,.4)}
.h2-btn.h2-lp-retry{margin-top:8px;background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border:0;font-weight:800;box-shadow:0 4px 14px -6px rgba(59,130,246,.6)}

/* ===== library auto-organization: file tags + go-to-assignment ===== */
.h2-file-tags{display:flex;flex-wrap:wrap;gap:5px;margin:6px 0 2px}
.h2-file-tag{font-size:.68rem;font-weight:800;letter-spacing:.03em;padding:2px 8px;border-radius:999px;background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.4);color:#d7cdf0;text-transform:uppercase}
.h2-btn.h2-file-goto{background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.4);color:#d7cdf0;font-weight:700}
.h2-btn.h2-file-goto:hover{background:rgba(var(--brand-rgb),.3);color:#fff}

/* ===== Linear/Free progression mode ===== */
.h2-plan-mode{display:flex;gap:10px;flex-wrap:wrap}
.h2-plan-modebtn{flex:1;min-width:180px;display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:12px 15px;border-radius:12px;border:1px solid var(--line);background:#14121d;color:#cfc7e6;cursor:pointer;font-weight:800;font-size:.96rem;text-align:left;transition:border-color .12s,background .12s}
.h2-plan-modebtn:hover{border-color:rgba(var(--brand-rgb),.4)}
.h2-plan-modebtn.on{border-color:rgba(var(--brand-rgb),.65);background:linear-gradient(135deg,rgba(var(--brand-rgb),.22),rgba(var(--brand-rgb),.1));color:#fff;box-shadow:0 0 0 2px rgba(var(--brand-rgb),.18) inset}
.h2-plan-modesub{font-size:.74rem;font-weight:600;color:#8a83a6}
.h2-plan-modebtn.on .h2-plan-modesub{color:var(--brand-2,#c8b9f2)}
.h2-plan-gatenote{font-size:.76rem;color:#8a83a6;font-style:italic}

/* locked stepper node (linear, ahead of frontier) */
.h2-lp-node.locked{opacity:.5;cursor:not-allowed}
.h2-lp-node.locked .h2-lp-dot{background:#2a2738;border-color:#3a3550}
.h2-lp-node.locked .h2-lp-dot::after{content:'🔒';font-size:.6rem;position:absolute}

/* assignment card: linked-to-lesson-plan badge */
.h2-asg-linkbadge{display:inline-flex;align-items:center;gap:7px;margin-bottom:10px;padding:7px 12px;border-radius:10px;text-decoration:none;background:rgba(var(--brand-rgb),.1);border:1px solid rgba(var(--brand-rgb),.32);color:#d7cdf0;font-size:.84rem;font-weight:600}
.h2-asg-linkbadge:hover{background:rgba(var(--brand-rgb),.2);color:#fff}
.h2-asg-linkpill{font-size:.74rem;font-weight:700;color:var(--brand-2,#c4b5fd);background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.34);padding:1px 8px;border-radius:999px}

/* ===== in-app file viewer popup ===== */
.h2-fv-ov{position:fixed;inset:0;z-index:100095;display:flex;align-items:center;justify-content:center;padding:24px;background:rgba(4,4,9,.8);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:h2fvIn .14s ease}
@keyframes h2fvIn{from{opacity:0}to{opacity:1}}
.h2-fv{display:flex;flex-direction:column;width:min(960px,100%);max-height:92vh;background:linear-gradient(180deg,#15131f,#0c0b13);border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 30px 90px rgba(0,0,0,.7)}
.h2-fv-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line)}
.h2-fv-name{font-weight:700;font-size:.95rem;color:#ece8f6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.h2-fv-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.h2-fv-newtab,.h2-fv-x{width:32px;height:32px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:#1a1824;color:#cfc7e6;cursor:pointer;font-size:1rem;text-decoration:none}
.h2-fv-newtab:hover,.h2-fv-x:hover{background:#241f33;color:#fff}
.h2-fv-body{flex:1;min-height:0;overflow:auto;display:flex;align-items:center;justify-content:center;padding:14px;background:#000}
.h2-fv-media{max-width:100%;max-height:84vh;display:block;border-radius:8px}
.h2-fv-media.pdf{width:100%;height:84vh;border:0;background:#fff}
img.h2-fv-media{object-fit:contain}
.h2-fv-audio{width:100%}
.h2-fv-fallback{text-align:center;color:#cfc7e6;padding:40px 20px;display:flex;flex-direction:column;gap:14px;align-items:center}

/* file-open links rendered as buttons keep their link look */
button.h2-asg-taskfile,button.h2-asg-sub-file{display:inline-flex;align-items:center;gap:5px;margin-top:4px;padding:3px 11px;border-radius:999px;background:rgba(147,197,253,.12);border:1px solid rgba(147,197,253,.35);font:inherit;font-size:.72rem;font-weight:800;letter-spacing:.04em;color:#bcd7fb;cursor:pointer}
button.h2-asg-taskfile:hover,button.h2-asg-sub-file:hover{background:rgba(147,197,253,.22);color:#fff}

/* ===== lesson-plan editor: save state header ===== */
.h2-plan-edithead{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;width:100%}
.h2-plan-saverow{display:flex;align-items:center;gap:12px}
.h2-plan-dirty{font-size:.8rem;font-weight:700;color:#6ee7b7;display:inline-flex;align-items:center;gap:6px}
.h2-plan-dirty.on{color:#fcd34d}
.h2-btn.h2-lp-dim{opacity:.45;cursor:default;box-shadow:none}

/* ===== player: chapter overview made obviously distinct ===== */
.h2-lp-card.chapter{background:linear-gradient(150deg,rgba(var(--brand-rgb),.16),rgba(20,18,32,.6));border:1px solid rgba(var(--brand2-rgb),.4);border-radius:20px;text-align:center;padding-top:30px;padding-bottom:30px}
.h2-lp-chbadge{display:inline-flex;align-items:center;gap:7px;align-self:center;margin:0 auto 6px;padding:6px 16px;border-radius:999px;background:rgba(var(--brand-rgb),.2);border:1px solid rgba(var(--brand2-rgb),.55);color:#d9ccff;font-size:.72rem;font-weight:900;letter-spacing:.14em}
.h2-lp-h1.ch{font-size:2.1rem;margin-top:4px}
.h2-lp-chintro{max-width:520px;margin:14px auto 0;color:#b9aee0;font-size:.98rem;line-height:1.5}
.h2-btn.h2-lp-startch{font-size:1.05rem;padding:14px 30px}

/* assignment genre pill */
.h2-asg-genre{font-size:.74rem;font-weight:700;color:#fcd34d;background:rgba(245,158,11,.14);border:1px solid rgba(245,158,11,.34);padding:1px 9px;border-radius:999px}

/* ===== per-task require-submission (editor) ===== */
.h2-asg-taskreq{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-top:6px;font-size:.84rem;color:#e7e2f4;cursor:pointer}
.h2-asg-taskreq input[type=checkbox]{width:16px;height:16px;accent-color:#8b5cf6;cursor:pointer}
.h2-asg-taskreq-hint{font-size:.74rem;color:#8a83a6;flex-basis:100%;padding-left:24px;margin-top:-3px}

/* ===== player: required-task state ===== */
.h2-lp-asg-check.req{display:inline-flex;align-items:center;justify-content:center;cursor:default;background:#0e0d16;border:1.6px solid #5a5278;color:#cbb9ff}
.h2-lp-asg-check.req.on{background:linear-gradient(160deg,#34d399,#10b981);border-color:#34d399;color:#04221a}
.h2-lp-asg-reqtag{display:inline-block;margin-left:8px;font-size:.62rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:#fcd34d;background:rgba(245,158,11,.14);border:1px solid rgba(245,158,11,.34);padding:1px 7px;border-radius:999px;vertical-align:middle}

/* ===== lesson-plan student progress view ===== */
.h2-prog-stat{font-size:.84rem;color:#9b93b8;margin:0 0 10px;font-weight:600}
.h2-prog-students{display:flex;flex-direction:column;gap:7px}
.h2-prog-srow2{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:10px 13px;border:1px solid var(--line);border-radius:11px;background:#0f0f18}
.h2-prog-name{flex:1;min-width:120px;font-weight:700;color:#fff;display:flex;align-items:center;gap:8px}
.h2-prog-doneflag{font-size:.7rem;font-weight:800;color:#6ee7b7;background:rgba(52,211,153,.14);border:1px solid rgba(52,211,153,.4);padding:1px 8px;border-radius:999px}
.h2-prog-mini{width:120px;height:7px;border-radius:4px;background:#06060c;overflow:hidden;flex:0 0 auto}
.h2-prog-mini-fill{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .6s cubic-bezier(.4,0,.2,1)}
.h2-prog-mini-fill.done{background:linear-gradient(90deg,#34d399,#10b981)}
.h2-prog-pctlabel{font-size:.78rem;font-weight:800;color:#cfcfe0;min-width:36px;text-align:right}
.h2-prog-mode{font-size:.72rem;font-weight:800;padding:2px 10px;border-radius:999px;border:1px solid}
.h2-prog-mode.linear{color:var(--brand-2,#c4b5fd);background:rgba(var(--brand-rgb),.16);border-color:rgba(var(--brand-rgb),.4)}
.h2-prog-mode.free{color:#7dd3fc;background:rgba(56,189,248,.14);border-color:rgba(56,189,248,.4)}
.h2-prog-rowacts{display:flex;gap:6px;flex-wrap:wrap}
.h2-btn.h2-prog-allowfree{background:linear-gradient(135deg,#34d399,#10b981);color:#04221a;border:0;font-weight:800}
.h2-prog-detail.card{margin-top:14px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px}
.h2-prog-dethead{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}

/* offline plans */
.h2-plan-card.offline{opacity:.66}
.h2-plan-card.offline .h2-plan-banner{filter:grayscale(.5)}
.h2-btn.h2-plan-onbtn{background:rgba(52,211,153,.14);border:1px solid rgba(52,211,153,.4);color:#6ee7b7;font-weight:700}

/* ===== Templates accordion (assignments + lesson plans) ===== */
.h2-tpl-acc{max-width:880px;margin:0 auto 16px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.02);overflow:hidden}
.h2-tpl-acc>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;padding:13px 16px;font-weight:800;color:#e7e2f4}
.h2-tpl-acc>summary::-webkit-details-marker{display:none}
.h2-tpl-acc>summary::after{content:'⌄';margin-left:auto;color:#8a83a6;transition:transform .2s}
.h2-tpl-acc[open]>summary::after{transform:rotate(180deg)}
.h2-tpl-count{font-size:.74rem;font-weight:800;color:var(--brand-2,#c4b5fd);background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.34);padding:1px 9px;border-radius:999px}
.h2-tpl-body{padding:4px 16px 16px}
.h2-tpl-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px}
.h2-tpl-card{display:flex;flex-direction:column;gap:7px;padding:13px;border:1px solid var(--line);border-radius:12px;background:#0f0f18}
.h2-tpl-card:hover{border-color:rgba(var(--brand-rgb),.4)}
.h2-tpl-name{font-weight:800;color:#fff;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.h2-tpl-tag{font-size:.62rem;font-weight:800;text-transform:uppercase;letter-spacing:.04em;color:#9b93b8;background:rgba(255,255,255,.06);border:1px solid var(--line);padding:1px 7px;border-radius:999px}
.h2-tpl-meta{font-size:.78rem;color:#9b93b8}
.h2-tpl-acts{display:flex;gap:6px;margin-top:auto;flex-wrap:wrap}

/* ===== assignments: Assigned / Unassigned accordions ===== */
.h2-asg-acc{border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.02);margin-bottom:12px;overflow:hidden}
.h2-asg-acc>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;padding:12px 15px;font-weight:800;color:#e7e2f4;font-size:.95rem}
.h2-asg-acc>summary::-webkit-details-marker{display:none}
.h2-asg-acc>summary::after{content:'⌄';margin-left:auto;color:#8a83a6;transition:transform .2s}
.h2-asg-acc[open]>summary::after{transform:rotate(180deg)}
.h2-asg-acccount{font-size:.74rem;font-weight:800;color:var(--brand-2,#c4b5fd);background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.34);padding:1px 9px;border-radius:999px}
.h2-asg-accbody{padding:4px 13px 13px;display:flex;flex-direction:column;gap:12px}

/* ===== library: sticky top dropzone + card mini buttons ===== */
.h2-dropzone.h2-dz-top{position:sticky;top:6px;z-index:6;margin:0 0 14px;padding:14px;display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;background:rgba(20,18,30,.92);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.h2-dropzone.h2-dz-top .h2-dz-plus{width:34px;height:34px;font-size:1.3rem}
.h2-dropzone.h2-dz-top .h2-dz-title{font-size:.95rem;margin:0}
.h2-dropzone.h2-dz-top .h2-dz-sub{margin:0}
.h2-folder-mini{position:static;border:1px solid var(--line);background:var(--panel-2);color:var(--muted);border-radius:8px;padding:3px 8px;font-size:.74rem;cursor:pointer;font-weight:700}
.h2-folder-actions{position:absolute;bottom:9px;right:10px;display:flex;gap:6px;align-items:center;z-index:2}
.h2-folder-mini:hover{background:rgba(var(--brand-rgb),.18);border-color:var(--brand-2);color:#fff}



/* template editor: chapter blocks */
.h2-tpl-chblock{border:1px solid var(--line);border-radius:11px;padding:11px;margin-bottom:9px;background:rgba(255,255,255,.02)}

/* assignment student-row message button */
.h2-asg-stu-msg{flex:0 0 auto;border:1px solid rgba(var(--brand-rgb),.4);background:rgba(var(--brand-rgb),.12);color:#d7cdf0;border-radius:999px;padding:4px 12px;font-size:.78rem;font-weight:700;cursor:pointer}
.h2-asg-stu-msg:hover{background:rgba(var(--brand-rgb),.24);color:#fff}

/* ===== lesson-plan editor: prominent media + must-watch ===== */
.h2-plan-mediahead{font-size:.95rem;font-weight:800;color:#e7e2f4;margin:10px 0 8px;padding-top:8px;border-top:1px solid var(--line)}
.h2-plan-editbtn{font-weight:800}
.h2-plan-mustrow{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:12px 0 0;padding:11px 14px;border:1px solid rgba(var(--brand-rgb),.32);border-radius:11px;background:rgba(var(--brand-rgb),.08);cursor:pointer}
.h2-pop label.h2-plan-mustrow,.h2-pop label.h2-plan-mustrow *{text-transform:none;letter-spacing:normal;margin:0}
.h2-plan-mustrow input[type=checkbox]{width:18px;height:18px;flex:0 0 auto;accent-color:var(--brand);cursor:pointer}
.h2-plan-musttitle{font-size:.9rem;font-weight:700;color:#ece8f6}
.h2-plan-musthint{flex-basis:100%;font-size:.76rem;font-weight:600;color:#8a83a6;padding-left:28px;margin-top:1px}
.h2-plan-mustbadge{font-size:.68rem;font-weight:800;color:var(--brand-2,#c4b9ff);background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.4);padding:1px 8px;border-radius:999px;white-space:nowrap}

/* player: must-watch note */
.h2-lp-watchnote{padding:12px 15px;border:1px dashed rgba(245,158,11,.4);border-radius:11px;background:rgba(245,158,11,.07);color:#fcd34d;font-weight:700;font-size:.92rem}

/* ===== player: must-watch clock under the video ===== */
.h2-lp-vidwrap{display:flex;flex-direction:column;gap:0}
.h2-lp-clock{display:flex;align-items:center;gap:10px;margin-top:8px;padding:9px 13px;border:1px solid rgba(var(--brand-rgb),.32);border-radius:0 0 10px 10px;background:linear-gradient(90deg,rgba(var(--brand-rgb),.1),rgba(56,130,246,.1))}
.h2-lp-clock-track{flex:1;height:7px;border-radius:4px;background:#06060c;overflow:hidden}
.h2-lp-clock-fill{display:block;height:100%;background:linear-gradient(90deg,var(--brand-2,#9b6bff),#6aa8ff);box-shadow:0 0 10px rgba(var(--brand-rgb),.5);transition:width .3s linear}
.h2-lp-clock-lbl{font-size:.78rem;font-weight:800;color:var(--brand-2,#c4b9ff);font-variant-numeric:tabular-nums;white-space:nowrap;min-width:96px;text-align:right}
.h2-lp-clock.done{border-color:rgba(52,211,153,.4);background:rgba(52,211,153,.08)}
.h2-lp-clock.done .h2-lp-clock-fill{background:linear-gradient(90deg,#34d399,#10b981)}
.h2-lp-clock.done .h2-lp-clock-lbl{color:#6ee7b7}

/* ===== editor: collapsible assignment link control (declutter) ===== */
.h2-plan-asgdet{margin:6px 0 2px;border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,.015);overflow:hidden}
.h2-plan-asgdet>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:9px;padding:8px 12px;font-size:.84rem;font-weight:700;color:#b9aee0}
.h2-plan-asgdet>summary::-webkit-details-marker{display:none}
.h2-plan-asgdet>summary::after{content:'⌄';margin-left:auto;color:#8a83a6}
.h2-plan-asgdet[open]>summary::after{transform:rotate(180deg)}
.h2-plan-asgnum{font-size:.7rem;font-weight:800;color:var(--brand-2,#c4b5fd);background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.34);padding:0 8px;border-radius:999px}
.h2-plan-asgbody{padding:4px 12px 12px;display:flex;flex-direction:column;gap:8px}

/* ===== plan card: organized action rows ===== */
.h2-plan-actions{display:flex;flex-direction:column;gap:8px;margin-top:12px}
.h2-plan-actrow{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.h2-plan-actrow.sec{gap:6px}
.h2-plan-actrow.sec .h2-btn{opacity:.92;font-size:.82rem}
.h2-plan-actrow.sec{padding-top:8px;border-top:1px solid var(--line)}

/* ===== messages: deep-link flash highlight ===== */
.h2-bubble.h2-flash-msg{animation:h2msgFlash 2.2s ease}
@keyframes h2msgFlash{0%,100%{box-shadow:0 0 0 0 rgba(var(--brand-rgb),0)}18%{box-shadow:0 0 0 3px rgba(var(--brand-rgb),.6),0 8px 26px -8px rgba(var(--brand-rgb),.6)}}

/* ===== player: sheet music viewer (zoom + scroll + resize) ===== */
.h2-lp-sheetwrap{display:flex;flex-direction:column;gap:0;margin-top:6px}
.h2-lp-sheetbar{display:flex;align-items:center;gap:6px;padding:7px 10px;background:#15131f;border:1px solid var(--line);border-bottom:0;border-radius:10px 10px 0 0}
.h2-lp-sheetbtn{min-width:34px;height:30px;padding:0 9px;border:1px solid var(--line);background:#1a1824;color:#cfc7e6;border-radius:8px;cursor:pointer;font-weight:800;font-size:.85rem;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}
.h2-lp-sheetbtn:hover{background:#241f33;color:#fff}
.h2-lp-sheetzoom{font-size:.78rem;font-weight:800;color:#c4b9ff;min-width:46px;text-align:center;font-variant-numeric:tabular-nums}
.h2-lp-sheetbox{overflow:auto;resize:vertical;height:560px;min-height:240px;max-height:90vh;border:1px solid var(--line);border-radius:0 0 10px 10px;background:#0b0b12}
.h2-lp-sheetmedia{display:block;border:0}
.h2-lp-sheetmedia.pdf{background:#fff}
.h2-lp-sheetbox img.h2-lp-sheetmedia{height:auto}

/* ===== sheet music: pan/zoom interactions ===== */
.h2-lp-sheetbox.pan{cursor:grab;touch-action:none;user-select:none}
.h2-lp-sheetbox.pan.grabbing{cursor:grabbing}
.h2-lp-sheetbox.pan img.h2-lp-sheetmedia{-webkit-user-drag:none;user-select:none;pointer-events:none}
.h2-lp-sheethint{font-size:.72rem;color:#6f6890;font-weight:600;margin-left:4px}
@media(max-width:620px){.h2-lp-sheethint{display:none}}

/* ===== Owner Panel ===== */
.h2-own-list{display:flex;flex-direction:column;gap:8px}
.h2-own-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:11px 13px;border:1px solid var(--line);border-radius:11px;background:#0f0f18}
.h2-own-id{flex:1;min-width:140px;display:flex;align-items:center;gap:9px}
.h2-own-name{font-weight:800;color:#fff}
.h2-own-role{font-size:.68rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--brand-2,#c4b5fd);background:rgba(var(--brand-rgb),.16);border:1px solid rgba(var(--brand-rgb),.34);padding:1px 8px;border-radius:999px}
.h2-own-count{font-size:.8rem;color:#9b93b8;font-weight:600}
.h2-own-perms{display:flex;flex-direction:column;gap:14px;max-height:60vh;overflow-y:auto;margin-top:6px}
.h2-own-permgroup{display:flex;flex-direction:column;gap:6px}
.h2-own-permhead{font-size:.72rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase;color:#9b8fce;border-bottom:1px solid rgba(var(--brand-rgb),.18);padding-bottom:5px}
.h2-own-permrow{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:7px 4px;cursor:pointer}
.h2-own-permlbl{display:flex;flex-direction:column;gap:1px;font-size:.9rem;color:#ece8f6}
.h2-own-permlbl code{font-size:.68rem;color:#6f6890}
.h2-own-toggle{flex:0 0 auto;width:44px;height:24px;border-radius:999px;border:1px solid var(--line);background:#1c1830;cursor:pointer;position:relative;transition:background .15s}
.h2-own-toggle.on{background:linear-gradient(90deg,var(--brand-2),var(--brand));border-color:var(--brand-2)}
.h2-own-knob{position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:#fff;transition:left .15s}
.h2-own-toggle.on .h2-own-knob{left:22px}
/* chat logs */
.h2-own-chatwrap{display:flex;gap:14px;min-height:340px}
.h2-own-threads{flex:0 0 280px;display:flex;flex-direction:column;gap:6px;max-height:62vh;overflow-y:auto}
.h2-own-thread{display:flex;flex-direction:column;gap:2px;text-align:left;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#0f0f18;cursor:pointer}
.h2-own-thread:hover,.h2-own-thread.on{border-color:rgba(var(--brand-rgb),.45);background:#171327}
.h2-own-thread-names{font-weight:700;color:#fff;font-size:.88rem}
.h2-own-thread-prev{font-size:.78rem;color:#8a83a6;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.h2-own-chatdetail{flex:1;min-width:0;border:1px solid var(--line);border-radius:12px;background:#0b0b12;display:flex;flex-direction:column;max-height:62vh;overflow:hidden}
.h2-own-chathead{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px 15px;border-bottom:1px solid var(--line)}
.h2-own-chatmsgs{flex:1;overflow-y:auto;padding:12px 15px;display:flex;flex-direction:column;gap:10px}
.h2-own-msg-top{display:flex;align-items:center;gap:8px;margin-bottom:2px}
.h2-own-msg-from{font-weight:700;color:var(--brand-2,#c4b5fd);font-size:.82rem}
.h2-own-msg-time{font-size:.72rem;color:#6f6890}
.h2-own-msg-text{color:#e7e2f4;font-size:.92rem;line-height:1.4}
@media(max-width:760px){.h2-own-chatwrap{flex-direction:column}.h2-own-threads{flex-basis:auto;max-height:240px}}

/* ===== lesson-plan completion celebration ===== */
.h2-lp-cele-back{position:fixed;inset:0;z-index:100120;display:flex;align-items:center;justify-content:center;padding:22px;background:radial-gradient(circle at 50% 30%,rgba(var(--brand-rgb),.4),rgba(4,4,9,.92));backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);overflow:hidden;animation:h2celeIn .25s ease}
@keyframes h2celeIn{from{opacity:0}to{opacity:1}}
.h2-lp-cele{position:relative;z-index:2;width:min(540px,100%);text-align:center;background:linear-gradient(180deg,#1a1530,#0f0d1a);border:1px solid rgba(var(--brand2-rgb),.5);border-radius:22px;padding:34px 30px 30px;box-shadow:0 30px 90px rgba(0,0,0,.6),0 0 70px -10px rgba(var(--brand-rgb),.6);animation:h2celePop .4s cubic-bezier(.2,1.3,.4,1)}
@keyframes h2celePop{from{transform:scale(.8);opacity:0}to{transform:scale(1);opacity:1}}
.h2-lp-cele-burst{font-size:4rem;line-height:1;margin-bottom:8px;animation:h2celeBurst 1.4s ease infinite}
@keyframes h2celeBurst{0%,100%{transform:scale(1) rotate(-4deg)}50%{transform:scale(1.12) rotate(4deg)}}
.h2-lp-cele-title{font-size:1.9rem;font-weight:900;margin:6px 0 10px;background:linear-gradient(90deg,var(--brand-2,#c4b5fd),#7dd3fc);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;line-height:1.15}
.h2-lp-cele-desc{color:#cdc5e6;font-size:1.02rem;line-height:1.55;max-width:420px;margin:0 auto 20px}
.h2-lp-cele-btn{font-size:1.05rem;padding:13px 32px}
.h2-lp-confetti{position:absolute;inset:0;z-index:1;pointer-events:none;overflow:hidden}
.h2-lp-conf{position:absolute;top:-16px;width:9px;height:14px;border-radius:2px;opacity:.9;animation-name:h2confFall;animation-timing-function:linear;animation-iteration-count:infinite}
@keyframes h2confFall{0%{transform:translateY(-20px) rotate(0)}100%{transform:translateY(105vh) rotate(720deg)}}

/* editor: completion message block */
.h2-plan-celedet{margin-top:12px;border:1px solid var(--line);border-radius:10px;background:rgba(255,255,255,.015);overflow:hidden}
.h2-plan-celedet>summary{list-style:none;cursor:pointer;padding:10px 13px;font-weight:700;color:#e7e2f4;font-size:.9rem}
.h2-plan-celedet>summary::-webkit-details-marker{display:none}
.h2-plan-celebody{padding:4px 13px 13px}

/* lesson-plan editor header: pin back left, save right (override centered backbtn) */
.h2-plan-edithead{width:100%}
.h2-plan-edithead .h2-backbtn{margin:0}
.h2-plan-edithead .h2-plan-saverow{margin-left:auto}

/* ===== lesson-plan editor: collapsible chapter cards ===== */
details.h2-plan-chapter>summary.h2-plan-chhead{list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:11px}
details.h2-plan-chapter>summary.h2-plan-chhead::-webkit-details-marker{display:none}
.h2-plan-chactions{display:flex;gap:8px;flex:0 0 auto}
.h2-plan-chcaret{flex:0 0 auto;color:#8a83a6;font-size:1.1rem;transition:transform .2s;align-self:center}
details.h2-plan-chapter[open]>summary .h2-plan-chcaret{transform:rotate(180deg)}
details.h2-plan-chapter:not([open]){padding-bottom:14px}
details.h2-plan-chapter:not([open])>summary{margin:0}

/* demo account badge (students tab) */
.h2-stu-demobadge{font-size:.72rem;font-weight:700;color:#9b93b8;background:rgba(255,255,255,.05);border:1px solid var(--line);padding:4px 10px;border-radius:999px}

/* ===== mobile sizing: lesson plans + editor + player ===== */
@media(max-width:620px){
  /* editor header */
  .h2-plan-edithead{flex-wrap:wrap;gap:10px;align-items:center}
  .h2-plan-edithead .h2-backbtn{order:1}
  .h2-plan-edithead .h2-plan-saverow{order:2;margin-left:auto;flex-wrap:wrap;gap:8px;justify-content:flex-end}
  .h2-plan-dirty{font-size:.74rem}
  /* progression mode buttons stack */
  .h2-plan-modebtn{min-width:0;flex:1 1 100%}
  /* chapter accordion head */
  details.h2-plan-chapter>summary.h2-plan-chhead{flex-wrap:wrap;row-gap:8px}
  .h2-plan-chactions{order:3;width:100%;justify-content:flex-end}
  .h2-plan-chcaret{order:2;margin-left:auto}
  /* section rows wrap, buttons share a row */
  .h2-plan-secrow{flex-wrap:wrap;row-gap:8px}
  .h2-plan-secrow-main{flex:1 1 60%;min-width:0}
  .h2-plan-editbtn{flex:1 1 auto}
  .h2-plan-seclink{padding-left:6px}
  .h2-plan-banner.edit{height:120px}
  .h2-plan-cards{gap:16px}
  /* plan card action rows */
  .h2-plan-actrow,.h2-plan-actrow.sec{gap:7px}
  .h2-plan-actrow .h2-btn{flex:1 1 auto}
  /* player */
  .h2-lp-card{padding:18px 14px;border-radius:16px}
  .h2-lp-h1{font-size:1.35rem}
  .h2-lp-h1.ch{font-size:1.6rem}
  .h2-lp-cap{display:none}
  .h2-lp-stops{height:34px}
  .h2-lp-cele{padding:26px 18px 24px}
  .h2-lp-cele-title{font-size:1.4rem}
}

/* assignment editor: assign-vs-link disclaimer */
.h2-asg-assignnote{display:flex;gap:9px;align-items:flex-start;margin-top:8px;padding:11px 13px;border:1px solid rgba(var(--brand-rgb),.3);border-radius:10px;background:rgba(var(--brand-rgb),.07);font-size:.84rem;line-height:1.45;color:var(--brand-2,#cdc5e6)}
.h2-asg-assignnote-ico{flex:0 0 auto;font-size:1rem}

/* ===== lessons: reworked flow panels ===== */
.h2-setup-panel{text-align:left}
.h2-setup-closed{font-size:.82rem;font-weight:600;color:#fca5a5;background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.32);border-radius:9px;padding:9px 12px;margin-top:10px}
.h2-livepanel{display:flex;flex-direction:column;gap:8px}
.h2-live-top{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.h2-live-name{font-weight:900;font-size:1.15rem;color:#fff;line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.h2-livepanel .h2-clock{flex:0 0 auto}

/* Studio — the prominent front-door nav item (accent color set per-studio via --sgc) */
.h2-rail .h2-nav-item.h2-nav-studio,
.h2-rail .h2-nav-item.h2-nav-studio.active{
  margin:2px 0 10px;border-radius:14px;
  background:color-mix(in srgb, var(--brand,#8b5cf6) 12%, var(--panel)) !important;
  border:1px solid color-mix(in srgb, var(--brand,#8b5cf6) 60%, transparent) !important;
  box-shadow:0 0 18px -5px color-mix(in srgb, var(--brand,#8b5cf6) 55%, transparent) !important;
  color:#fff !important}
.h2-rail .h2-nav-item.h2-nav-studio .h2-nav-label{font-weight:950;letter-spacing:.01em;color:#fff}
.h2-rail .h2-nav-item.h2-nav-studio .h2-nav-ico{color:var(--brand,#8b5cf6)}
/* shiny purple Upgrade nav (free plan only) */
.h2-nav-upgrade{position:relative;overflow:hidden;margin-top:6px;background:linear-gradient(135deg,#7c3aed,#a855f7)!important;border:1px solid color-mix(in srgb,#a855f7 60%,transparent)!important;box-shadow:0 8px 26px -8px color-mix(in srgb,#a855f7 75%,transparent)!important;font-weight:800!important}
.h2-nav-upgrade .h2-nav-ico,.h2-nav-upgrade .h2-nav-label{color:#fff!important}
.h2-nav-upgrade:hover{filter:brightness(1.08);box-shadow:0 10px 30px -8px color-mix(in srgb,#a855f7 90%,transparent)!important}
.h2-nav-upgrade::after{content:'';position:absolute;top:0;left:-70%;width:55%;height:100%;pointer-events:none;background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);transform:skewX(-18deg);animation:h2upshine 3.4s ease-in-out infinite}
@keyframes h2upshine{0%{left:-70%}50%{left:140%}100%{left:140%}}
.h2-nav-bug{background:color-mix(in srgb,#f59e0b 16%,var(--rail-bg,#12121a))!important;border:1px solid color-mix(in srgb,#f59e0b 50%,transparent)!important;font-weight:800!important}
.h2-nav-bug .h2-nav-ico,.h2-nav-bug .h2-nav-label{color:#fcd34d!important}
.h2-nav-bug:hover{background:color-mix(in srgb,#f59e0b 26%,var(--rail-bg,#12121a))!important}

@media (prefers-reduced-motion: reduce){.h2-nav-upgrade::after{animation:none;display:none}}

.h2-rail .h2-nav-item.h2-nav-studio:hover{filter:brightness(1.08)}

/* paid lesson plan locked until purchased */
.h2-plan-card.h2-plan-locked .h2-plan-banner{filter:grayscale(.65) brightness(.6)}
.h2-plan-card.h2-plan-locked{position:relative}
.h2-plan-card.h2-plan-locked::after{content:'🔒';position:absolute;top:14px;right:16px;font-size:1.1rem;opacity:.9}

/* Studio brand: primary buttons use the computed contrast text color */
.h2-studio-scope .h2-btn.primary{color:var(--brand-fg,#fff)}

/* --- studio theme engine hooks --- */
.h2-rail{background:var(--rail-bg, var(--panel))}
body.h2-flat *{box-shadow:none !important}
body{font-family:var(--app-font, -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif)}

/* ===== theme engine: accent-synced glows, scrollbar, home, avatar, card-bg, top-bar ===== */
*{scrollbar-color:var(--brand,#8b5cf6) transparent}
*::-webkit-scrollbar-thumb{background:var(--brand,#8b5cf6) !important;border-radius:8px;border:2px solid transparent;background-clip:padding-box}
*::-webkit-scrollbar-thumb:hover{filter:brightness(1.12)}
.h2-avatar{background:linear-gradient(135deg,var(--brand),var(--brand-2)) !important;color:var(--brand-fg,#fff) !important;box-shadow:0 6px 16px color-mix(in srgb,var(--brand,#8b5cf6) 38%,transparent) !important}
.h2-bottomnav .h2-nav-item.active{color:var(--brand,#fff)}
.h2-bottomnav .h2-nav-item.active .h2-nav-ico{filter:drop-shadow(0 4px 10px color-mix(in srgb,var(--brand,#8b5cf6) 55%,transparent))}
.h2-rail .h2-nav-item.h2-nav-solo:not(.h2-nav-studio) .h2-nav-ico{color:var(--brand,#a855f7)}
.h2-rail .h2-nav-item.h2-nav-solo:not(.h2-nav-studio).active{border:1px solid color-mix(in srgb,var(--brand,#8b5cf6) 50%,transparent);box-shadow:0 0 16px -5px color-mix(in srgb,var(--brand,#8b5cf6) 55%,transparent)}
body.h2-flat .h2-bottomnav .h2-nav-item.active .h2-nav-ico{filter:none}
/* user-chosen card background (the self-contained boxes) */
body.h2-themed-cards .h2-card,body.h2-themed-cards .h2-tile,body.h2-themed-cards .h2-dtile,body.h2-themed-cards .h2-msgs,body.h2-themed-cards .h2-msg-side{background:var(--card-bg) !important}
/* user-chosen top bar color */
body.h2-themed-topbar .h2-topbar{background:var(--topbar-bg) !important}

/* staff lesson-plan paid vs free distinction */
.h2-plan-card.h2-plan-paid{border-color:color-mix(in srgb,#fbbf24 55%,var(--line)) !important;box-shadow:0 0 0 1px color-mix(in srgb,#fbbf24 26%,transparent),0 10px 28px -14px color-mix(in srgb,#fbbf24 55%,transparent)}
.h2-plan-card.h2-plan-paid .h2-eyebrow{color:#fbbf24}
.h2-plan-card.h2-plan-free .h2-eyebrow{color:var(--brand-2,#22d3ee)}

/* owner payments chart toggle active state */
.h2-mini.on{background:var(--brand,#7c3aed);color:var(--brand-fg,#fff);border-color:transparent}

/* lesson-plan section: green when media is attached */
.h2-plan-hasmedia{background:linear-gradient(135deg,#22c55e,#16a34a) !important;color:#04210f !important;border-color:transparent !important}

@keyframes h2themeflash{0%{box-shadow:0 0 0 0 transparent;background:transparent}25%{box-shadow:0 0 0 2px var(--brand-2,#a855f7);background:color-mix(in srgb,var(--brand-2,#a855f7) 14%,transparent)}100%{box-shadow:0 0 0 0 transparent;background:transparent}}
.h2-theme-flash{animation:h2themeflash 1.4s ease;border-radius:10px}

/* offering card: optional shine + hover */
.h2-offer-hover{transition:transform .16s ease, box-shadow .16s ease}
.h2-offer-hover:hover{transform:translateY(-5px)}
.h2-offer-shine{position:relative;overflow:hidden}
.h2-offer-shine::after{content:'';position:absolute;inset:0;background:linear-gradient(150deg,rgba(255,255,255,.055),transparent 42%);pointer-events:none;border-radius:inherit}
.h2-offer-shine::before{content:'';position:absolute;top:0;left:-60%;width:38%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.16),transparent);transform:skewX(-18deg);pointer-events:none;opacity:0}
.h2-offer-shine:hover::before{animation:h2offshine 1.05s ease}
@keyframes h2offshine{0%{left:-60%;opacity:1}100%{left:145%;opacity:1}}
@media (prefers-reduced-motion: reduce){.h2-offer-shine:hover::before{animation:none}}
/* offering editor: clean checkbox option labels */
.h2-pop label.h2-off-opt,.h2-off-opt{display:flex;align-items:center;gap:9px;cursor:pointer;font-weight:600;color:var(--text);font-size:.9rem;text-transform:none;letter-spacing:normal;margin:7px 0}
.h2-off-opt span{text-transform:none;letter-spacing:normal;font-weight:600;color:var(--text)}
.h2-off-opt input{width:17px;height:17px;flex:0 0 auto;accent-color:var(--brand-2)}

/* h2-mobile-overflow-fixes: keep Studio/Admin buttons inside the margins */
@media(max-width:760px){
  .h2-view{max-width:100%;overflow-x:hidden}
  .h2-cal-row{flex-wrap:wrap}
  .h2-cal-row>span{flex:1 1 100%;min-width:0;overflow-wrap:anywhere}
  .h2-mini{margin-left:0}
  .h2-admin-tabs{flex-wrap:wrap}
  .h2-formrow{flex-wrap:wrap}
  .h2-formrow input,.h2-formrow select{min-width:0;flex:1 1 140px}
  .h2-msg-search{flex:0 0 auto;width:100%}
  .h2-chatfilter-search{flex:1 1 120px}
}
@media(max-width:460px){
  .h2-offercard{min-width:0!important;max-width:100%!important;flex:1 1 100%!important}
  .h2-modal{padding:16px!important}
}

/* h2-mobile-popup-spacing */
@media(max-width:560px){
  .h2-pop-back{padding:10px}
  .h2-pop{padding:18px 15px;border-radius:18px}
  .h2-pop h2{font-size:1.18rem}
  .h2-pop label{margin:11px 0 5px}
  .h2-pop input,.h2-pop textarea,.h2-pop select{padding:11px 12px;font-size:.92rem}
  .h2-field-row{flex-direction:column;gap:0}
  .h2-pop-actions{flex-wrap:wrap}
  .h2-modal{padding:18px 14px calc(20px + var(--safe-b))}
}
/* h2-ios-noscroll: kill pull-to-refresh in the homescreen webapp */
.h2-view,.h2-main{overscroll-behavior-y:contain}
/* hide bottom nav while typing so it never floats above the iOS keyboard */
body.h2-kbd .h2-bottomnav{display:none}
/* h2-icon-font-pin: keep nav/tile symbol icons as text glyphs across theme fonts */
.h2-nav-ico,.h2-dtile-ico,.h2-nav-group-dot,.h2-bottomnav .h2-nav-ico{font-family:'Segoe UI Symbol','Apple Symbols','Noto Sans Symbols2',system-ui,sans-serif;font-variant-emoji:text;text-rendering:optimizeLegibility}

/* h2-asg-mobile: assignments layout on phones */
@media(max-width:600px){
  .h2-asg-head{flex-direction:column;align-items:stretch;gap:9px}
  .h2-asg-prog{width:100%!important}
  .h2-asg-prog-pct{display:inline!important}
  .h2-asg-meta{gap:8px}
  .h2-asg-edit-tasktop{flex-wrap:wrap}
  .h2-asg-stuchip{padding:6px 11px;font-size:.8rem}
  .h2-asg-edit-task{padding:10px}
  .h2-asg-section{padding:12px}
  .h2-asg-stu-head{gap:10px;padding:11px 12px;align-items:center}
  .h2-asg-stu-name{font-size:.86rem}
  .h2-asg-stu-msg{padding:6px 12px;font-size:.76rem;white-space:nowrap;margin-left:auto}
}

/* iOS add-to-home-screen tip (Safari only, dismissible) */
.h2-ios-tip{position:fixed;left:10px;right:10px;bottom:calc(72px + var(--safe-b));z-index:1200;animation:h2iosin .35s ease}
@keyframes h2iosin{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
.h2-ios-tip-in{display:flex;align-items:center;gap:10px;background:var(--panel);border:1px solid rgba(var(--brand-rgb),.45);border-radius:14px;padding:11px 13px;box-shadow:0 16px 44px rgba(0,0,0,.5)}
.h2-ios-tip-msg{flex:1;min-width:0;font-size:.84rem;line-height:1.4;color:var(--text)}
.h2-ios-tip-msg b{color:var(--brand-2,#c4b5fd)}
.h2-ios-tip-x{flex:0 0 auto;width:28px;height:28px;border:0;border-radius:8px;background:var(--panel-2);color:var(--muted);font-size:.95rem;cursor:pointer}

/* svg icons inside nav/tile: scale to text size, stay centered */
.h2-nav-ico svg{display:block;width:1.06em;height:1.06em}
/* bottom-nav: fixed-height slot so svg + glyph icons line up identically */
.h2-bottomnav .h2-nav-ico{display:flex;align-items:center;justify-content:center;height:1.2em}
.h2-bottomnav .h2-nav-ico svg{width:1.04em;height:1.04em;transform:translateY(-0.03em)}
.h2-rail .h2-nav-ico{display:flex;align-items:center;justify-content:center}
.h2-rail .h2-nav-ico svg{margin:0 auto}
.h2-dtile-ico svg{width:1.18em;height:1.18em}

/* cal day-edit fullscreen on phones (was a 88vh bottom-sheet) */
@media(max-width:619px){
  #h2-cal-modal{align-items:stretch}
  #h2-cal-modal .h2-modal{max-width:none;width:100%;height:100dvh;max-height:100dvh;border-radius:0;padding-top:18px}
}
/* chat-fab speech bubble dead-centered */
.h2-chatfab-ico{display:grid;place-items:center;line-height:0}
.h2-chatfab-ico svg{display:block}

/* no-select while dragging any resizer (dock-roll + lessons viewport) */
body:has(.h2-drag-shield){-webkit-user-select:none!important;user-select:none!important}
.h2-grab-right,.h2-grab-bottom,.h2-grab-corner,.h2-mini-resize{user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;touch-action:none}

/* dock icon theming: note icons follow accent, emojis render monochrome */
.h2-inst-chordtog,.h2-inst-single{color:var(--brand-2)}
.h2-inst-bar .h2-inst-btn2,.h2-inst-gear,.h2-inst-selbtn{font-variant-emoji:text}
/* course timeline: horizontal scroll so nodes never smush */
.h2-lp-trackwrap{max-width:1040px;margin:6px auto 0;overflow-x:auto;overflow-y:hidden;padding-bottom:8px;scrollbar-width:thin}
.h2-lp-trackwrap::-webkit-scrollbar{height:7px}.h2-lp-trackwrap::-webkit-scrollbar-thumb{background:rgba(var(--brand-rgb),.5);border-radius:99px}
.h2-lp-track{margin:6px 0 0}

/* docs mobile + anti-scroll: nothing forces horizontal overflow on phones */
.h2-docs{max-width:860px;margin:0 auto}
.h2-docs,.h2-doc-body,.h2-doc-p,.h2-faq-a,.h2-faq-q,.h2-doc-sum-t{overflow-wrap:anywhere;word-break:break-word}
.h2-doc-link{word-break:break-all}
@media(max-width:760px){
  .h2-docs{padding:0 2px}
  .h2-doc-body{padding:2px 14px 16px}
  .h2-doc-sum{padding:14px 14px}
  .h2-view,.h2-docs,.h2-doc-acc,.h2-doc-body{max-width:100%;overflow-x:hidden}
  .h2-hero{max-width:100%;overflow-x:hidden}
  img,video,iframe,pre,table{max-width:100%}
}