:root{--bg:#0e1116;--panel:#171b22;--panel-strong:#1f2530;--panel-soft:#12161d;--text:#eef2f6;--text-strong:#fff;--muted:#9ba7b6;--border:#303845;--border-strong:#465466;--accent:#3fbfa3;--accent-strong:#52d6b7;--accent-muted:#3fbfa31f;--action:#2f8fbe;--action-hover:#38a5d7;--danger:#ff7468;--warning:#f2bf5f;--success:#64d9a8;--shadow:0 18px 48px #00000057;color:var(--text);background:var(--bg);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}*{box-sizing:border-box}body{background:radial-gradient(circle at top left, #3fbfa314, transparent 34rem), linear-gradient(180deg, #10141a 0%, var(--bg) 42%);margin:0}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.app-shell{width:min(1120px,100% - 32px);min-height:100vh;margin:0 auto;padding:32px 0 48px}.app-header{justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:24px;display:flex}.eyebrow{color:var(--accent-strong);letter-spacing:0;text-transform:uppercase;margin:0 0 6px;font-size:.84rem;font-weight:700}h1,h2,h3,p{margin:0}h1{color:var(--text-strong);letter-spacing:0;font-size:2.65rem;line-height:1}h2{color:var(--text-strong);letter-spacing:0;font-size:1.25rem;line-height:1.25}h3{color:var(--text-strong);letter-spacing:0;font-size:.98rem;font-weight:700;line-height:1.25}.privacy-note{color:#c6f5e7;white-space:nowrap;background:#3fbfa31f;border:1px solid #52d6b761;border-radius:6px;align-items:center;gap:8px;padding:9px 12px;font-size:.92rem;font-weight:650;display:inline-flex}.drop-panel{min-height:178px;color:var(--text);background:linear-gradient(180deg, var(--panel-strong), var(--panel));border:2px dashed var(--border-strong);box-shadow:var(--shadow);border-radius:8px;grid-template-columns:auto 1fr auto;align-items:center;gap:18px;padding:28px;transition:border-color .16s,background .16s,transform .16s;display:grid}.drop-panel:hover,.drop-panel.is-over{border-color:var(--accent-strong);background:linear-gradient(#1b2a2b,#182028);transform:translateY(-1px)}.drop-panel p{color:var(--muted);margin-top:4px}.secondary-button,.merge-button,.icon-button,.drag-handle{border:1px solid #0000;border-radius:6px;justify-content:center;align-items:center;display:inline-flex}.secondary-button{min-height:42px;color:var(--text-strong);border-color:var(--border-strong);background:#252d38;padding:0 16px;font-weight:700}.workspace{border:1px solid var(--border);background:#171b22f5;border-radius:8px;margin-top:20px;padding:22px}.controls{grid-template-columns:minmax(148px,auto) minmax(220px,1fr) auto;align-items:center;gap:12px;display:grid}.controls label{color:#d6dde7;font-weight:750}.controls input{min-width:0;height:44px;color:var(--text-strong);border:1px solid var(--border-strong);background:#0f1319;border-radius:6px;padding:0 13px}.controls input:focus,.secondary-button:focus-visible,.merge-button:focus-visible,.icon-button:focus-visible,.drag-handle:focus-visible{outline-offset:2px;outline:3px solid #3fbfa342}.merge-button{color:#fff;background:var(--action);gap:8px;min-height:44px;padding:0 18px;font-weight:800}.merge-button:hover:not(:disabled){background:var(--action-hover)}.merge-button:disabled{color:#c2cad4;background:#3a4350}.status-row{color:var(--muted);flex-wrap:wrap;gap:10px;margin-top:16px;font-size:.92rem;display:flex}.status-row span{border:1px solid var(--border);background:#121820;border-radius:999px;padding:4px 10px}.messages{gap:8px;margin-top:16px;display:grid}.message{border-radius:6px;align-items:flex-start;gap:8px;padding:10px 12px;font-size:.95rem;display:flex}.message.warning{color:#ffe1a6;background:#f2bf5f1f;border:1px solid #f2bf5f6b}.message.error{color:#ffc3bd;background:#ff74681f;border:1px solid #ff74686b}.message.success{color:#c6f5de;background:#64d9a81f;border:1px solid #64d9a86b}.file-list{gap:12px;margin-top:18px;display:grid}.file-card{background:var(--panel-soft);border:1px solid var(--border);border-radius:8px;grid-template-columns:44px 96px minmax(0,1fr) 44px;align-items:center;gap:14px;min-height:116px;padding:12px;display:grid}.file-card.is-dragging{z-index:5;box-shadow:0 18px 42px #00000080}.drag-handle,.icon-button{color:#c9d2df;border-color:var(--border);background:#1d232d;width:40px;height:40px}.drag-handle{cursor:grab;touch-action:none}.drag-handle:active{cursor:grabbing}.icon-button:hover{color:#ffd3cf;background:#ff74681f;border-color:#ff74688c}.thumbnail{object-fit:contain;border:1px solid var(--border);background:#0b0e13;border-radius:6px;width:96px;height:92px}.file-details{min-width:0}.file-details h3{overflow-wrap:anywhere}.file-details p{color:var(--muted);margin-top:7px;font-size:.92rem;font-weight:650}.empty-state{min-height:116px;color:var(--muted);border:1px solid var(--border);background:#121820;border-radius:8px;place-items:center;margin-top:18px;display:grid}@media (width<=760px){.app-shell{width:min(100% - 20px,1120px);padding-top:20px}.app-header,.drop-panel,.controls{grid-template-columns:1fr}.app-header{align-items:start;display:grid}.privacy-note{white-space:normal}h1{font-size:2.15rem}.drop-panel{justify-items:start;padding:22px}.controls{align-items:stretch}.file-card{grid-template-columns:38px 76px minmax(0,1fr) 38px;gap:10px;padding:10px}.thumbnail{width:76px;height:76px}.drag-handle,.icon-button{width:36px;height:36px}}