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0;line-height:1.5}.settings-meta--hint{font-size:12px;color:#64748b}.settings-form{display:flex;flex-direction:column;gap:12px}.settings-field{display:flex;flex-direction:column;gap:6px;margin-top:10px}.settings-field label{font-size:11px;font-weight:500;text-transform:uppercase;letter-spacing:.06em;color:#ffffff73}.settings-field input[type=text],.settings-field input[type=email],.settings-field input[type=password],.settings-field input[type=time],.settings-field select,.settings-field textarea{width:100%;background:#0f172a99;border:1px solid rgba(148,163,184,.25);border-radius:10px;padding:10px 12px;font-size:14px;color:#e5e7eb;outline:none;transition:border-color .15s,box-shadow .15s;font-family:inherit}.settings-field textarea{resize:vertical;min-height:90px}.settings-field input:focus,.settings-field select:focus,.settings-field textarea:focus{border-color:#88c5ab;box-shadow:0 0 0 3px #88c5ab26}.settings-row-between{display:flex;align-items:center;justify-content:space-between;gap:16px}.settings-row-between+.settings-row-between{margin-top:16px;padding-top:16px;border-top:1px solid rgba(148,163,184,.15)}.settings-inline-row{display:flex;gap:8px}.settings-inline-row input{flex:1;background:#0f172a99;border:1px solid rgba(148,163,184,.25);border-radius:10px;padding:10px 12px;font-size:14px;color:#e5e7eb;outline:none;font-family:inherit}.settings-inline-row input:focus{border-color:#88c5ab;box-shadow:0 0 0 3px #88c5ab26}.settings-inline-actions{display:flex;gap:8px;flex-wrap:wrap}.settings-btn-primary,.settings-btn-ghost,.settings-btn-danger{padding:9px 16px;border-radius:10px;font-size:13px;font-weight:500;cursor:pointer;transition:all .15s;font-family:inherit;white-space:nowrap}.settings-btn-primary{background:#88c5ab;color:#1a1a1a;border:1px solid #88C5AB}.settings-btn-primary:hover:not(:disabled){background:#78b89e}.settings-btn-primary:disabled{opacity:.5;cursor:not-allowed}.settings-btn-ghost{background:transparent;color:#cbd5e1;border:1px solid rgba(148,163,184,.3)}.settings-btn-ghost:hover:not(:disabled){background:#94a3b81a;border-color:#88c5ab;color:#e5e7eb}.settings-btn-ghost:disabled{opacity:.5;cursor:not-allowed}.settings-btn-danger{background:transparent;color:#fca5a5;border:1px solid rgba(239,68,68,.45)}.settings-btn-danger:hover:not(:disabled){background:#ef44441f;border-color:#ef4444;color:#fca5a5}.settings-btn-danger:disabled{opacity:.5;cursor:not-allowed}.settings-radio-row{display:flex;flex-wrap:wrap;gap:8px}.settings-radio{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:1px solid rgba(148,163,184,.25);border-radius:999px;cursor:pointer;background:#0f172a99;color:#cbd5e1;font-size:13px;transition:all .15s}.settings-radio:hover{border-color:#88c5ab;color:#e5e7eb}.settings-radio 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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 .settings-toggle-thumb{transform:translate(20px)}.settings-slider-row{display:flex;align-items:center;gap:10px}.settings-slider-row input[type=range]{flex:1;accent-color:#88C5AB}.settings-progress-track{height:8px;background:#94a3b82e;border-radius:999px;overflow:hidden;margin-top:8px}.settings-progress-fill{height:100%;background:linear-gradient(90deg,#88c5ab,#60a5fa);border-radius:999px;transition:width .3s}.settings-plan-label{font-size:18px;font-weight:600;color:#e5e7eb;margin:0 0 6px}.settings-usage-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.settings-usage-stat{padding:14px 12px;border:1px solid rgba(148,163,184,.15);border-radius:10px;background:#0003;text-align:center}.settings-usage-value{font-size:22px;font-weight:700;color:#88c5ab}.settings-usage-label{font-size:11px;color:#94a3b8;margin-top:4px}.settings-sticky-save{display:flex;justify-content:flex-end;padding-top:8px}.settings-link-list{list-style:none;padding:0;margin:8px 0 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:#0f172a1f;box-shadow:0 24px 60px #0f172a1f;color:#1a1a1a}html[data-theme=light] .settings-sidebar{background:#f1f5f9;border-right-color:#0f172a1a}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:#0f172a1a}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-math-style] .settings-content{font-size:var(--app-font-size, 14px)}@media(max-width:768px){.settings-screen{flex-direction:column;height:100vh;max-width:100%;border-radius:0}.settings-sidebar{width:100%;max-height:180px;border-right:none;border-bottom:1px solid rgba(148,163,184,.2)}.settings-nav{flex-direction:row;overflow-x:auto}.settings-nav-item{white-space:nowrap}}:root{color-scheme:dark}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(180deg,#0d1117,#020617,#000);color:#e5e7eb;font-family:system-ui,-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,sans-serif}#root{min-height:100vh}