:root{--bg: #0b1220;--bg-soft: #0f172a;--surface: #131c31;--surface-2: #1a2540;--border: #26324f;--text: #e7ecf6;--text-dim: #94a3b8;--accent: #6366f1;--accent-2: #818cf8;--accent-soft: rgba(99, 102, 241, .14);--green: #22c55e;--red: #ef4444;--amber: #f59e0b;--radius: 14px;--radius-sm: 10px;--shadow: 0 10px 30px -12px rgba(0, 0, 0, .55);--nav-h: 62px;--font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{font-family:var(--font);background:radial-gradient(1200px 600px at 80% -10%,#1b2350 0%,transparent 55%),radial-gradient(900px 500px at -10% 30%,#0f1b3d 0%,transparent 50%),var(--bg);background-attachment:fixed;color:var(--text);min-height:100vh;-webkit-font-smoothing:antialiased;padding-bottom:calc(var(--nav-h) + env(safe-area-inset-bottom,0px))}@media (min-width: 900px){body{padding-bottom:0}}a{color:var(--accent-2);text-decoration:none}button{font-family:inherit;cursor:pointer}input,textarea,select{font-family:inherit;font-size:15px;color:var(--text);background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 14px;outline:none;transition:border-color .15s;width:100%}input:focus,textarea:focus,select:focus{border-color:var(--accent)}::placeholder{color:#5b6b85}.app{max-width:1080px;margin:0 auto;padding:0 16px}.topbar{position:sticky;top:0;z-index:40;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0b1220d1;border-bottom:1px solid var(--border)}.topbar-inner{max-width:1080px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;gap:12px}.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:var(--text);letter-spacing:.3px}.brand 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10px}.pill.green{background:#22c55e24;color:#4ade80}.pill.amber{background:#f59e0b24;color:#fbbf24}.pill.red{background:#ef444424;color:#f87171}.pill.indigo{background:var(--accent-soft);color:var(--accent-2)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:var(--radius-sm);padding:12px 18px;font-size:15px;font-weight:600;color:#fff;background:var(--accent);transition:background .15s,transform .05s;white-space:nowrap}.btn:active{transform:scale(.98)}.btn:hover{background:#4f52e0}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.block{width:100%}.btn.secondary{background:var(--surface-2);border:1px solid var(--border);color:var(--text)}.btn.secondary:hover{background:#223052}.btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text-dim)}.btn.ghost:hover{color:var(--text);border-color:var(--text-dim)}.btn.danger{background:#ef444429;color:#f87171;border:1px solid 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.uploading{position:static;margin-top:0;padding:10px 12px}.file-card{min-width:200px;max-width:320px}.file-card .file-preview-img,.file-card .file-preview-video{display:block;width:100%;max-height:320px;object-fit:contain;border-radius:8px;margin-bottom:8px;background:#000}.preview-loading{font-size:11.5px;color:var(--text-dim);padding:8px 0;opacity:.8}.file-card audio{display:block;width:100%;margin-bottom:8px}.file-card-row{display:flex;align-items:center;gap:10px;min-width:0}.file-card-row .f-icon{width:34px;height:34px;border-radius:8px;flex:none;display:grid;place-items:center;background:#ffffff24;color:#fff}.msg.other .file-card-row .f-icon{background:var(--accent-soft);color:var(--accent-2)}.file-card-row .meta{flex:1;min-width:0}.file-card-row .name{font-weight:600;font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-card-row .sub{font-size:11.5px;opacity:.8}.file-card-row .btn{flex:none;padding:7px 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solid var(--border)}.file-row:last-child{border-bottom:none}.file-row .f-icon{width:40px;height:40px;border-radius:10px;flex:none;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-2)}.file-row .meta{flex:1;min-width:0}.file-row .name{font-weight:600;font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-row .sub{font-size:12px;color:var(--text-dim)}.progress{height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden;margin-top:8px}.progress>div{height:100%;background:linear-gradient(90deg,var(--accent),var(--green));transition:width .2s}.empty{text-align:center;color:var(--text-dim);padding:40px 16px}.empty .icon{width:52px;height:52px;border-radius:14px;margin:0 auto 12px;background:var(--surface-2);color:var(--text-dim);display:grid;place-items:center}.uploading{position:sticky;bottom:10px;margin-top:12px;padding:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);font-size:13px;display:flex;align-items:center;gap:10px}.bottomnav{position:fixed;left:0;right:0;bottom:0;z-index:50;background:#0f172af0;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom,0px);display:flex}.bottomnav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:10px 4px 8px;font-size:10.5px;color:var(--text-dim);font-weight:600}.bottomnav a.active{color:var(--accent-2)}.bottomnav a svg{width:22px;height:22px}@media (min-width: 900px){.bottomnav{display:none}}.desktop-nav{display:none}@media (min-width: 900px){.desktop-nav{display:flex;gap:4px;margin-left:18px}.desktop-nav a{padding:8px 14px;border-radius:999px;font-size:14px;font-weight:600;color:var(--text-dim);display:flex;align-items:center;gap:7px}.desktop-nav a:hover{color:var(--text);background:var(--surface-2)}.desktop-nav a.active{color:#fff;background:var(--accent-soft)}}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#050810b8;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:60;display:grid;place-items:center;padding:16px}.modal{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}.modal h3{margin:0 0 6px}.modal .close{float:right;background:none;border:none;color:var(--text-dim);font-size:20px;line-height:1}.divider{height:1px;background:var(--border);margin:18px 0}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.center{text-align:center}.mt{margin-top:16px}.hidden{display:none!important}.fade-in{animation:fadeIn .25s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}.spinner{width:18px;height:18px;border:2.5px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;display:inline-block}.spinner.dim{border-color:var(--border);border-top-color:var(--text-dim)}@keyframes spin{to{transform:rotate(360deg)}}