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button:hover{color:#fca5a5}.settings-avatar-row{display:flex;align-items:center;gap:16px;margin-bottom:12px}.settings-avatar{width:64px;height:64px;border-radius:999px;background:#88c5ab26;border:1px solid rgba(148,163,184,.3);display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0;color:#88c5ab;font-size:22px;font-weight:600}.settings-avatar img{width:100%;height:100%;object-fit:cover}.settings-avatar-controls{display:flex;flex-direction:column;gap:6px;align-items:flex-start}.settings-toggle{position:relative;width:44px;height:24px;border-radius:999px;background:#94a3b84d;border:none;cursor:pointer;transition:background .15s;padding:0;flex-shrink:0}.settings-toggle--on{background:#88c5ab}.settings-toggle-thumb{position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:999px;background:#fff;transition:transform .15s;box-shadow:0 1px 3px #0000004d}.settings-toggle--on 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0;display:flex;flex-direction:column;gap:6px}.settings-link-list a{color:#88c5ab;font-size:13px;text-decoration:none;border-bottom:1px solid transparent;padding-bottom:1px;transition:border-color .15s}.settings-link-list a:hover{border-color:#88c5ab}.settings-bullet-list{margin:8px 0;padding-left:20px;color:#cbd5e1;font-size:13px;line-height:1.6}.settings-toast{position:sticky;top:0;z-index:5;padding:10px 14px;border-radius:10px;font-size:13px;margin-bottom:12px;animation:fadeInUp .2s ease-out}.settings-toast--success{background:#22c55e1f;border:1px solid rgba(34,197,94,.3);color:#86efac}.settings-toast--error{background:#ef44441f;border:1px solid rgba(239,68,68,.3);color:#fca5a5}.settings-modal-backdrop{position:fixed;inset:0;background:#020617b3;display:flex;align-items:center;justify-content:center;z-index:500;padding:20px}.settings-modal{width:100%;max-width:460px;background:#0f1423;border:1px solid rgba(148,163,184,.25);border-radius:16px;padding:24px;box-shadow:0 24px 60px #0009}.settings-modal-title{margin:0 0 12px;font-size:17px;color:#e5e7eb}.settings-modal-body{color:#cbd5e1;font-size:13px;line-height:1.5}.settings-modal-body p{margin:0 0 10px}.settings-modal-body code{background:#88c5ab26;color:#88c5ab;padding:1px 6px;border-radius:4px;font-size:12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.settings-modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:20px}html[data-theme=light] body{background:#f8fafc;color:#1a1a1a}html[data-theme=light] .settings-screen,html[data-theme=light] .chat-shell,html[data-theme=light] .welcome-content,html[data-theme=light] .quiz-panel,html[data-theme=light] .progress-panel{background:#fff;border-color:#0f19291f;box-shadow:0 24px 60px #0f19291f;color:#1a1a1a}html[data-theme=light] .settings-sidebar{background:#f1f5f9;border-right-color:#0f19291a}html[data-theme=light] .settings-sidebar-header h1,html[data-theme=light] .settings-section h2,html[data-theme=light] .settings-section h3,html[data-theme=light] .settings-plan-label{color:#0f172a}html[data-theme=light] .settings-card{background:#f8fafc;border-color:#0f19291a}html[data-theme=light] .settings-nav-item{color:#334155}html[data-theme=light] .settings-nav-item--active{background:#88c5ab33;color:#0f8a63}html[data-theme=light] .settings-meta{color:#475569}html[data-theme=light] .settings-meta--hint{color:#64748b}html[data-theme=light] .bubble-tutor{background:#f3f4f6;border-color:#e5e7eb;color:#1f2937}html[data-theme=light] .bubble-tutor h1,html[data-theme=light] .bubble-tutor h2,html[data-theme=light] .bubble-tutor h3,html[data-theme=light] .bubble-tutor h4{color:#0f172a}html[data-theme=light] .bubble-tutor p,html[data-theme=light] .bubble-tutor li{color:#475569}html[data-theme=light] .bubble-tutor strong{color:#0f172a}html[data-theme=light] .bubble-tutor blockquote{background:#88c5ab1f;color:#334155}html[data-theme=light] .bubble-tutor blockquote strong{color:#0f172a}html[data-theme=light] .bubble-student{background:#fff;border:2px solid #88C5AB;color:#000}html[data-theme=light] .welcome-desc,html[data-theme=light] .welcome-join-text,html[data-theme=light] .upload-content p,html[data-theme=light] .upload-hint,html[data-theme=light] .doc-card-meta,html[data-theme=light] .doc-source-badge,html[data-theme=light] .no-docs{color:#475569}html[data-theme=light] .welcome-tagline{color:var(--teal-dim)}html[data-theme=light] .welcome-docs h3{color:#1e293b}html[data-theme=light] .doc-card-name{color:#0f172a}html[data-theme=light] .welcome-divider{color:#475569}html[data-theme=light] .welcome-divider:before,html[data-theme=light] .welcome-divider:after{background:#0f192924}html[data-theme=light] .welcome-join-btn{background:var(--teal-dim);border-color:var(--teal-dim);color:#fff}html[data-theme=light] .welcome-join-btn:hover{background:#2f615d;border-color:#2f615d}html[data-theme=light] .welcome-start-btn{border-color:var(--teal-dim);color:var(--teal-dim)}html[data-theme=light] .welcome-start-btn:hover{background:#5ba49f1a;border-color:var(--teal-dim)}html[data-theme=light] .upload-zone{border-color:#0f192940}html[data-theme=light] .upload-zone:hover,html[data-theme=light] .upload-zone.drag-active,html[data-theme=light] .doc-card:hover,html[data-theme=light] .doc-card.selected{border-color:var(--teal-dim);background:#5ba49f1a}html[data-theme=light] .doc-card{border-color:#0f192926}html[data-theme=light] .settings-menu{background:#fff;border-color:#0f19291f;box-shadow:0 12px 32px #0f19291f}html[data-theme=light] .settings-menu-item{color:#334155}html[data-theme=light] .settings-menu-icon{color:#64748b}html[data-theme=light] .settings-menu-item:hover{background:#5ba49f1f;color:var(--teal-dim)}html[data-theme=light] .settings-menu-item--logout{border-top-color:#0f19291a}html[data-theme=light] .settings-menu-item--logout:hover{background:#dc26261a;color:#b91c1c}html[data-theme=light] .settings-field label{color:#475569}html[data-theme=light] .settings-field 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