:root{--text:#5c6578;--text-h:#0f172a;--bg:#f4f6fb;--surface:#fff;--border:#e2e8f0;--accent:#2563eb;--accent-hover:#1d4ed8;--accent-soft:#2563eb14;--success:#059669;--error:#dc2626;--warning:#d97706;--shadow:0 1px 3px #0f172a0f, 0 8px 24px #0f172a0f;--radius:12px;--sans:"DM Sans", system-ui, -apple-system, "Segoe UI", sans-serif;font:16px/1.5 var(--sans);color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased}@media (prefers-color-scheme:dark){:root{--text:#94a3b8;--text-h:#f1f5f9;--bg:#0b1120;--surface:#131c2e;--border:#1e293b;--accent:#3b82f6;--accent-hover:#60a5fa;--accent-soft:#3b82f61f;--shadow:0 1px 3px #0000004d, 0 8px 24px #00000040}}*,:before,:after{box-sizing:border-box}body{min-height:100vh;margin:0}#app{max-width:720px;margin:0 auto;padding:2rem 1.25rem 3rem}.hidden{display:none!important}.header{margin-bottom:2rem}.brand{align-items:center;gap:1rem;display:flex}.brand-icon{background:var(--accent-soft);width:52px;height:52px;color:var(--accent);border-radius:14px;justify-content:center;align-items:center;display:flex}h1{color:var(--text-h);letter-spacing:-.02em;margin:0;font-size:1.75rem;font-weight:700}.subtitle{color:var(--text);margin:.25rem 0 0;font-size:.9rem}.upload-card{background:var(--surface);border:2px dashed var(--border);border-radius:var(--radius);text-align:center;cursor:pointer;box-shadow:var(--shadow);outline:none;padding:2.5rem 1.5rem;transition:border-color .2s,background .2s,box-shadow .2s}.upload-card:hover,.upload-card:focus-visible,.upload-card--active{border-color:var(--accent);background:var(--accent-soft)}.upload-card:focus-visible{box-shadow:var(--shadow), 0 0 0 3px var(--accent-soft)}.upload-icon{color:var(--accent);margin-bottom:.75rem}.upload-title{color:var(--text-h);margin:0;font-size:1.05rem;font-weight:600}.upload-hint{margin:.5rem 0 0;font-size:.85rem}.queue{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);margin-top:1.5rem;padding:1rem 1.25rem}.queue-title{color:var(--text-h);margin:0 0 .75rem;font-size:.95rem}.queue-list{margin:0;padding:0;list-style:none}.queue-item{border-bottom:1px solid var(--border);align-items:center;gap:.75rem;padding:.5rem 0;display:flex}.queue-item:last-child{border-bottom:none}.file-name{text-overflow:ellipsis;white-space:nowrap;min-width:0;color:var(--text-h);flex:1;font-size:.9rem;overflow:hidden}.file-size{font-variant-numeric:tabular-nums;font-size:.8rem}.btn-icon{width:28px;height:28px;color:var(--text);cursor:pointer;background:0 0;border:none;border-radius:6px;font-size:1.25rem;line-height:1}.btn-icon:hover{background:var(--accent-soft);color:var(--accent)}.actions{gap:.75rem;margin-top:1rem;display:flex}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;padding:.65rem 1.25rem;font-family:inherit;font-size:.9rem;font-weight:600;text-decoration:none;transition:background .15s,transform .1s;display:inline-flex}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-ghost{color:var(--text);border:1px solid var(--border);background:0 0}.btn-ghost:hover{background:var(--accent-soft);color:var(--accent)}.btn-sm{margin-top:.5rem;padding:.35rem .75rem;font-size:.8rem}.job-panel{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);margin-top:1.5rem;padding:1.25rem}.job-header{justify-content:space-between;align-items:center;margin-bottom:.75rem;display:flex}.job-header h2{color:var(--text-h);margin:0;font-size:1rem}.job-progress-text{font-variant-numeric:tabular-nums;color:var(--accent);font-weight:700}.progress-bar{background:var(--border);border-radius:99px;height:8px;margin-bottom:1rem;overflow:hidden}.progress-fill{background:linear-gradient(90deg, var(--accent), #60a5fa);border-radius:99px;width:0%;height:100%;transition:width .35s}.file-list{margin:0;padding:0;list-style:none}.file-item{border-bottom:1px solid var(--border);padding:.75rem 0}.file-item:last-child{border-bottom:none}.file-item-main{justify-content:space-between;align-items:center;gap:.5rem;display:flex}.file-status{white-space:nowrap;font-size:.8rem;font-weight:600}.file-item--done .file-status{color:var(--success)}.file-item--converting .file-status{color:var(--accent)}.file-item--error .file-status{color:var(--error)}.file-item--pending .file-status{color:var(--text)}.file-error{color:var(--error);margin:.35rem 0 0;font-size:.8rem}.job-actions{border-top:1px solid var(--border);margin-top:1rem;padding-top:1rem}.error{color:var(--error);background:#dc262614;border-radius:8px;margin-top:1rem;padding:.75rem 1rem;font-size:.9rem}.footer{text-align:center;margin-top:2.5rem;font-size:.8rem}.footer a{color:var(--accent)}@media (prefers-reduced-motion:reduce){.progress-fill{transition:none}}