:root{--bg: #f2efe8;--panel: #fffdf8;--ink: #272018;--ink-2: #5c4d35;--muted: #7c6852;--line: #dacfbf;--line-strong: #b8a990;--primary: #2f7a4f;--primary-ink: #ecfff2;--primary-hover: #246040;--primary-soft: #d0f5e2;--cream: #fffdf8;--accent: #bf4d2b;--danger: #c0392b;--radius: 12px;--radius-lg: 18px;--radius-pill: 999px;--shadow: 0 2px 8px rgba(0,0,0,.08);--shadow-lg: 0 8px 28px rgba(0,0,0,.13);--font-display: system-ui, -apple-system, sans-serif;--font-script: Georgia, "Times New Roman", serif;--t-fast: .15s}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);min-height:100dvh;padding-bottom:env(safe-area-inset-bottom)}.container{width:100%;max-width:640px;margin:0 auto;padding:0 16px}.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px 16px;margin-bottom:12px;box-shadow:var(--shadow)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border-radius:var(--radius);font-size:1rem;font-weight:600;cursor:pointer;border:none;text-decoration:none;-webkit-tap-highlight-color:transparent;transition:background .18s,box-shadow .18s,opacity .15s,transform .12s;width:100%}.btn:active{opacity:.8;transform:scale(.98)}.btn:focus-visible{outline:3px solid var(--primary);outline-offset:2px}.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.btn--primary{background:linear-gradient(135deg,var(--primary) 0%,#3a9660 100%);color:var(--primary-ink);box-shadow:0 2px 8px #2f7a4f4d}.btn--primary:hover{background:linear-gradient(135deg,var(--primary-hover) 0%,var(--primary) 100%);box-shadow:0 4px 14px #2f7a4f66}.btn--outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}.btn--outline:hover{background:#2f7a4f0f}.btn--danger{background:var(--danger);color:#fff}.btn--danger:hover{background:#a93226;box-shadow:0 4px 12px #c0392b59}.btn--google{background:#fff;color:#3c4043;border:1px solid var(--line);box-shadow:var(--shadow)}.btn--google:hover{box-shadow:0 3px 12px #00000026}.btn--facebook{background:#1877f2;color:#fff}.btn--facebook:hover{background:#1464d0;box-shadow:0 4px 12px #1877f266}.btn--sm{min-height:36px;font-size:.875rem;padding:0 14px;width:auto}.btn--lg{min-height:52px;font-size:1.05rem;padding:0 28px}.btn--ghost{background:transparent;color:var(--ink);border:none;box-shadow:none;width:auto}.btn--ghost:hover{background:#27201812}.btn--block{width:100%}.form-group{margin-bottom:16px}.form-group label{display:block;font-size:.875rem;font-weight:600;color:var(--muted);margin-bottom:6px}input,select,textarea{width:100%;min-height:44px;padding:10px 14px;border:1px solid var(--line);border-radius:8px;font-size:16px;background:var(--panel);color:var(--ink);font-family:inherit;transition:border-color .15s}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--primary)}textarea{min-height:88px;resize:vertical}.app-header{background:#fffdf8e0;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);padding:12px 16px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:100}.app-header__brand{display:flex;align-items:center;gap:8px;text-decoration:none;color:inherit}.app-header__title{font-size:1.1rem;font-weight:800;letter-spacing:-.3px;background:linear-gradient(135deg,var(--primary) 0%,#3a9660 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;display:flex;align-items:center;gap:6px}.app-header__mark{font-size:1.25rem;-webkit-text-fill-color:initial;background:none;-webkit-background-clip:initial;background-clip:initial}.page{padding:24px 16px;max-width:640px;margin:0 auto}.page-title{font-size:1.5rem;font-weight:800;letter-spacing:-.4px;margin-bottom:4px;color:var(--ink)}.page-subtitle{color:var(--muted);font-size:.9rem;margin-bottom:24px}.class-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:12px;transition:box-shadow .2s,transform .2s}.class-card:hover{box-shadow:0 6px 20px #0000001a;transform:translateY(-2px)}.class-card__head{display:flex;align-items:flex-start;gap:10px;margin-bottom:10px}.class-card__title{font-size:1rem;font-weight:700;margin-bottom:2px;color:var(--ink)}.class-card__desc{font-size:.875rem;color:var(--muted);margin-bottom:0;line-height:1.4}.class-card__meta{font-size:.8rem;color:var(--muted);margin-bottom:12px;display:flex;flex-wrap:wrap;gap:8px;align-items:center;list-style:none;padding:0}.class-card__meta li{display:flex;align-items:center;gap:4px}.class-card__foot{display:flex;align-items:center;justify-content:space-between;gap:10px;border-top:1px solid var(--line);padding-top:12px;margin-top:4px}.class-card__teacher{display:flex;align-items:center;gap:10px;flex:1;min-width:0}.class-card__teacher .name{font-size:.85rem;font-weight:600;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.class-card__teacher .meta{font-size:.75rem;color:var(--muted)}.badge{display:inline-flex;align-items:center;gap:5px;padding:2px 9px;border-radius:20px;font-size:.72rem;font-weight:700;letter-spacing:.02em;text-transform:uppercase;background:var(--line);color:var(--ink-2)}.badge--green{background:#d0f5e2;color:#16643a}.badge--orange{background:#fde9d4;color:#804000}.badge--red{background:#fde4e4;color:#8a0000}.badge--blue{background:#d4e8fd;color:#003d8a}.badge--primary{background:var(--primary-soft);color:var(--primary)}.badge--warn{background:#fde9d4;color:#804000}.badge--dot:before{content:"";display:block;width:6px;height:6px;border-radius:50%;background:currentColor;flex-shrink:0}.eyebrow{font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--primary);margin-bottom:4px}.display{font-family:var(--font-display);font-weight:700;letter-spacing:-.02em;color:var(--ink)}.input-icon{position:relative}.input-icon svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}.input-icon .input{padding-left:40px}.input{width:100%;min-height:44px;padding:10px 14px;border:1px solid var(--line);border-radius:8px;font-size:16px;background:var(--panel);color:var(--ink);font-family:inherit;transition:border-color var(--t-fast)}.input:focus{outline:none;border-color:var(--primary)}.avatar{width:36px;height:36px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-size:.85rem;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.login-page{min-height:100dvh;display:flex;flex-direction:column}.login-page__form-pane{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 24px}.oauth-buttons{display:flex;flex-direction:column;gap:10px}.role-toggle{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%}.role-toggle__opt{display:flex;flex-direction:column;align-items:center;gap:4px;padding:14px 10px;border-radius:var(--radius);background:var(--panel);border:1.5px solid var(--line);cursor:pointer;font-family:inherit;transition:border-color var(--t-fast),background var(--t-fast),box-shadow var(--t-fast)}.role-toggle__opt:hover{border-color:var(--line-strong)}.role-toggle__opt.is-active{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}.role-toggle__opt-main{display:flex;align-items:center;gap:6px;font-size:.9rem;font-weight:600}.role-toggle__opt-arabic{font-size:.8rem;opacity:.7;letter-spacing:.03em}.error{color:var(--danger);font-size:.875rem}.room-page{min-height:100dvh;background:#0e0d0b;display:flex;flex-direction:column}.video-grid{flex:1;display:grid;grid-template-columns:1fr;grid-auto-rows:1fr;gap:4px;padding:8px;min-height:0}.video-tile{background:#222;border-radius:12px;overflow:hidden;position:relative;min-height:120px}.video-tile video{width:100%;height:100%;object-fit:cover}.room-controls{padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:#0009;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);display:flex;justify-content:center;gap:12px;border-top:1px solid rgba(255,255,255,.08)}.ctrl-btn{width:52px;height:52px;border-radius:50%;border:0;cursor:pointer;background:#ffffff1f;color:#fff;display:flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent}.ctrl-btn--danger{background:var(--danger)}.spinner{display:flex;align-items:center;justify-content:center;padding:40px}.spinner__dot{width:10px;height:10px;border-radius:50%;background:var(--primary);margin:0 4px;animation:bounce .8s infinite alternate}.spinner__dot:nth-child(2){animation-delay:.15s}.spinner__dot:nth-child(3){animation-delay:.3s}@keyframes bounce{0%{transform:translateY(0)}to{transform:translateY(-10px)}}@media (min-width: 768px){.container,.page{max-width:900px}.role-cards{flex-direction:row;max-width:640px}.role-card{flex:1}.video-grid{grid-template-columns:repeat(2,1fr)}}.card{transition:box-shadow .2s}.card:hover{box-shadow:0 4px 16px #0000001a}