:root{--bg:#fff;--bg-secondary:#f8f9fa;--text:#1a1a2e;--text-muted:#6c757d;--border:#dee2e6;--accent:#4361ee;--accent-hover:#3451d1;--accent-bg:#4361ee14;--danger:#e63946;--danger-bg:#e6394614;--shadow:0 2px 8px #00000014;--radius:8px;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;font:16px/1.5 system-ui,Segoe UI,Roboto,sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#0f0f17;--bg-secondary:#1a1a2e;--text:#e9ecef;--text-muted:#adb5bd;--border:#2d2d44;--accent:#7b9ef0;--accent-hover:#5d84ec;--accent-bg:#7b9ef01f;--danger:#ff6b6b;--danger-bg:#ff6b6b1f;--shadow:0 2px 8px #0000004d}}*{box-sizing:border-box}body{justify-content:center;align-items:flex-start;min-height:100svh;margin:0;padding:40px 16px 80px;display:flex}.container{flex-direction:column;gap:20px;width:100%;max-width:640px;display:flex}header{text-align:center;padding-bottom:8px}h1{letter-spacing:-.5px;margin:0 0 8px;font-size:2rem;font-weight:700}.subtitle{color:var(--text-muted);margin:0;font-size:.95rem}.drop-zone{border:2px dashed var(--border);border-radius:var(--radius);text-align:center;color:var(--text-muted);flex-direction:column;align-items:center;gap:12px;padding:40px 24px;transition:border-color .2s,background .2s;display:flex}.drop-zone p{margin:0;font-size:.95rem}.drop-zone.drag-active{border-color:var(--accent);background:var(--accent-bg);color:var(--text)}.btn{border-radius:var(--radius);cursor:pointer;border:none;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:.95rem;font-weight:500;transition:background .2s,opacity .2s;display:inline-flex}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff;width:100%;padding:14px;font-size:1rem}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-secondary{background:var(--bg-secondary);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--border)}.file-list{flex-direction:column;gap:6px;margin:0;padding:0;list-style:none;display:flex}.file-item{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);-webkit-user-select:none;user-select:none;align-items:center;gap:10px;padding:10px 14px;transition:box-shadow .15s;display:flex}.file-item.dragging{opacity:.5}.file-item.drag-over{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-bg)}.drag-handle{color:var(--text-muted);cursor:grab;flex-shrink:0;font-size:1.1rem}.file-name{text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:.9rem;overflow:hidden}.file-size{color:var(--text-muted);flex-shrink:0;font-size:.8rem}.remove-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;flex-shrink:0;padding:2px 6px;font-size:.85rem;transition:color .15s,background .15s}.remove-btn:hover{color:var(--danger);background:var(--danger-bg)}#progress-container{flex-direction:column;gap:8px;display:flex}.progress-bar-container{background:var(--border);border-radius:3px;height:6px;overflow:hidden}.progress-bar{background:var(--accent);border-radius:3px;height:100%;transition:width .3s}.progress-text{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:.85rem;overflow:hidden}.error-container{background:var(--danger-bg);border:1px solid var(--danger);border-radius:var(--radius);color:var(--danger);padding:12px 16px;font-size:.9rem}