:root{color-scheme:dark;--bg: #0b0d12;--surface: #11141b;--surface-2: #161a23;--surface-3: #1c212c;--text: #f5f7fb;--muted: #8b94a8;--blue: #4f8cff;--cyan: #42d8cf;--green: #3ddc84;--border: #232834;--radius: 16px;--radius-sm: 12px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:15px/1.55 system-ui,-apple-system,Segoe UI,sans-serif;min-height:100vh}.app-header{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:1200px;margin:0 auto;padding:16px 24px;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:baseline;gap:10px}.brand h1{margin:0;font-size:22px;letter-spacing:1px;color:var(--blue)}.brand h1 span{color:var(--cyan)}.tagline{color:var(--muted);font-size:13px}.tabs{display:flex;gap:6px;background:var(--surface);padding:4px;border-radius:999px;border:1px solid var(--border)}.tab-btn{background:transparent;border:none;border-radius:999px;padding:8px 24px;color:var(--muted);font-size:14px;cursor:pointer;transition:background .15s,color .15s}.tab-btn.active{background:var(--blue);color:#fff}.header-status{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--green);background:#132b24;border:1px solid #1f4539;padding:5px 12px;border-radius:999px}.header-status:before{content:"";width:7px;height:7px;background:var(--green);border-radius:50%}.container{max-width:1200px;margin:0 auto;padding:24px}.page-heading{margin-bottom:18px}.page-heading h2{margin:0 0 4px;font-size:28px;font-weight:700}.page-subtitle{margin:0;color:var(--muted);font-size:14px}.panel{display:none}.panel.active{display:block}.two-col{display:grid;grid-template-columns:minmax(320px,1.1fr) minmax(320px,1fr);gap:20px;align-items:start}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.card h2{margin:0 0 14px;font-size:18px;font-weight:600}.card h3{margin:18px 0 10px;font-size:16px;font-weight:600}.card-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}.card-heading h2{margin:0}.form-group{margin-bottom:18px}.form-group:last-child{margin-bottom:0}label{display:block;color:#cbd1dc;margin-bottom:8px;font-size:14px}.file-limit{display:inline-block;margin-left:8px;padding:2px 8px;background:#1c2a45;color:var(--blue);border-radius:999px;font-size:12px}textarea,input[type=file]{width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);padding:12px;font:inherit;outline:none}textarea{resize:vertical;min-height:80px}textarea:focus,input[type=file]:focus{border-color:var(--blue)}input[type=file]{cursor:pointer}input[type=file]::file-selector-button{background:var(--surface-3);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:6px 12px;margin-right:12px;cursor:pointer}.file-list{margin-top:8px;font-size:13px;color:var(--muted)}.profile-options{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.profile-option{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;text-align:left;display:flex;flex-direction:column;gap:2px;cursor:pointer}.profile-option strong{font-size:16px}.profile-option small{color:var(--muted);font-size:12px}.profile-option.selected{border-color:var(--blue);background:#1c2a45}.advanced-settings{margin-top:12px;color:var(--muted);font-size:14px}summary{cursor:pointer}.hint{color:var(--muted);font-size:13px;margin:8px 0 0}button{font:inherit;background:var(--surface-2);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);padding:11px 20px;cursor:pointer;transition:background .15s,border-color .15s}button:hover:not(:disabled){background:var(--surface-3);border-color:#3b404c}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--blue);border-color:var(--blue);color:#fff}button.primary:hover:not(:disabled){background:#3a7aee}.controls{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.controls button{flex:1 1 auto}.badge{display:inline-block;font-size:12px;border-radius:999px;padding:4px 10px;background:#1c2a45;color:#a9c9ff}.verified{display:inline-block;font-size:12px;border-radius:999px;padding:4px 10px;background:#132b24;color:#8ff5eb;border:1px solid #1f4539}.session-card .card-heading{margin-bottom:12px}.session-section{padding:14px 0;border-bottom:1px solid var(--border)}.session-section:last-child{border-bottom:none}.session-label{display:block;color:var(--muted);font-size:12px;margin-bottom:6px}.session-row{display:flex;justify-content:space-between;gap:12px}.session-row strong{word-break:break-all}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--cyan);word-break:break-all}.qr-card{display:flex;flex-direction:column}.qr-stage{background:#fff;border-radius:var(--radius-sm);padding:14px;display:grid;place-items:center;overflow:hidden}.qr-stage canvas{display:block;width:100%;height:auto;image-rendering:pixelated}.qr-stage:fullscreen{border-radius:0;padding:1vmin;background:#fff;align-content:center}.qr-status{margin-top:14px;display:flex;flex-direction:column;gap:4px}.qr-status .muted{color:var(--muted);font-size:13px}.qr-status strong{font-size:18px}.send-stage .qr-card .controls{margin-top:auto;padding-top:16px}.camera-card{display:flex;flex-direction:column}.video-wrap{position:relative;aspect-ratio:4 / 3;background:#07080a;border-radius:var(--radius-sm);overflow:hidden}.video-wrap video{width:100%;height:100%;object-fit:cover}.scan-overlay{position:absolute;inset:8%;pointer-events:none}.scan-overlay span{position:absolute;width:28px;height:28px;border-color:var(--blue);border-style:solid;border-width:0;opacity:.7}.scan-overlay span:nth-child(1){top:0;left:0;border-top-width:3px;border-left-width:3px}.scan-overlay span:nth-child(2){top:0;right:0;border-top-width:3px;border-right-width:3px}.scan-overlay span:nth-child(3){bottom:0;left:0;border-bottom-width:3px;border-left-width:3px}.scan-overlay span:nth-child(4){bottom:0;right:0;border-bottom-width:3px;border-right-width:3px}.camera-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px}.camera-footer p{margin:0;color:var(--muted);font-size:13px}.camera-meta{color:var(--muted);font-size:13px}.status-card{display:flex;flex-direction:column;gap:14px}.progress-pct{font-size:36px;font-weight:700;line-height:1}.packet-count{color:var(--muted);font-size:14px;margin-top:-8px}.progress-wrap{display:flex;align-items:center;gap:10px}.progress-bar{flex:1;height:10px;background:var(--surface-2);border-radius:999px;overflow:hidden}.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--blue),var(--cyan));transition:width .2s}.speed-row{display:flex;align-items:flex-end;justify-content:space-between;gap:12px}.speed-row .muted{display:block;font-size:12px;color:var(--muted);margin-bottom:4px}.speed-value{font-size:28px;color:var(--cyan);line-height:1.1}.eta{color:var(--muted);font-size:14px}.metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.metric{background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px}.metric span{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}.metric strong{display:block;font-size:18px;font-weight:600}.diagnostics{margin-top:4px;color:var(--muted);font-size:14px}.warning{margin-top:10px;padding:10px;border:1px solid #80602a;background:#342a18;border-radius:var(--radius-sm);color:#ffd793;font-size:13px}.result-card{margin-top:20px}.result-header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:18px;flex-wrap:wrap}.result-header h2{margin:0 0 4px}.result-header p{margin:0;color:var(--muted);font-size:14px}.key-metrics{margin-bottom:22px}.result-files{display:flex;flex-direction:column;gap:10px;margin:14px 0}.result-item{display:flex;align-items:center;gap:12px;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px}.result-thumb{width:48px;height:48px;border-radius:8px;background:var(--surface-3);flex-shrink:0}.result-item>div{flex:1;min-width:0}.result-item strong{word-break:break-all}.result-size{color:var(--muted);font-size:13px}.result-actions{display:flex;gap:8px;flex-shrink:0}.result-media img,.result-media video{max-width:100%;border-radius:var(--radius-sm);display:block;margin:14px 0}.result-media audio{width:100%;margin:14px 0}pre{white-space:pre-wrap;word-break:break-word;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;font-size:14px;line-height:1.5}.chart{height:260px;margin-top:14px}.chart svg{width:100%;height:100%;overflow:visible}.chart-legend{display:flex;gap:20px;color:var(--muted);font-size:13px;margin-top:8px}.chart-legend span:before{content:"";display:inline-block;width:18px;height:3px;margin-right:7px;vertical-align:middle}.progress-key:before{background:var(--blue)}.speed-key:before{background:var(--cyan)}.chart-details{margin-top:18px;border-top:1px solid var(--border);padding-top:14px;color:var(--muted);font-size:14px}.diagnostics-grid{margin-bottom:14px}.info,.stats{color:var(--muted);font-size:13px;line-height:1.5;margin-top:10px}.info code{color:var(--cyan)}footer{text-align:center;padding:30px 20px;color:var(--muted);font-size:13px}footer a{color:var(--cyan);text-decoration:none}footer a:hover{text-decoration:underline}.preview-overlay{position:fixed;inset:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:60;padding:18px}.preview-overlay[hidden]{display:none}.preview-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);max-width:min(920px,100%);max-height:90vh;overflow:auto;padding:16px}.preview-bar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:12px}.preview-bar strong{word-break:break-all}.preview-content img,.preview-content video{max-width:100%;max-height:72vh;display:block;margin:auto}.preview-content audio{width:min(480px,80vw);display:block;margin:30px auto}.preview-content pre{white-space:pre-wrap;word-break:break-word;max-height:70vh;overflow:auto;font-size:13px;background:var(--surface-2);border-radius:var(--radius-sm);padding:12px;margin:0}.update-toast{position:fixed;right:18px;bottom:18px;padding:12px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2)}@media (max-width: 900px){.two-col{grid-template-columns:1fr}.app-header{flex-wrap:wrap}.brand{flex:1}.tabs{order:3;width:100%;justify-content:center}.header-status{display:none}}@media (max-width: 600px){.container{padding:16px}.page-heading h2{font-size:24px}.profile-options{grid-template-columns:1fr}.progress-pct{font-size:28px}.speed-value{font-size:22px}.result-header{flex-direction:column}.camera-footer{flex-direction:column;align-items:flex-start}}