*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f0f12;--surface: #1a1a22;--border: #2a2a36;--text: #e0e0e8;--muted: #8888a0;--accent: #6c5ce7;--accent-hover: #7d6ff0;--danger: #e74c3c;--radius: 10px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}#app{max-width:700px;margin:0 auto;padding:2rem 1rem}header{text-align:center;margin-bottom:2rem}header h1{font-size:2rem;color:var(--accent)}header p{color:var(--muted);margin-top:.3rem}section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;margin-bottom:1.5rem}section h2{font-size:1.1rem;margin-bottom:1rem;color:var(--accent)}label{display:block;margin-bottom:1rem;font-size:.9rem;color:var(--muted)}input,select,button{display:block;width:100%;margin-top:.3rem;padding:.6rem .8rem;font-size:.95rem;background:var(--bg);color:var(--text);border:1px solid var(--border);border-radius:6px;outline:none}input:focus,select:focus{border-color:var(--accent)}select{cursor:pointer}input[type=file]{font-size:.85rem;padding:.4rem}.row{display:flex;gap:1rem}.row label{flex:1}button{background:var(--accent);color:#fff;font-weight:600;border:none;cursor:pointer;transition:background .2s;padding:.75rem}button:hover{background:var(--accent-hover)}button:disabled{opacity:.5;cursor:not-allowed}.hidden{display:none!important}#status{margin-top:1rem;padding:.8rem;border-radius:6px;font-size:.9rem}#status.error{background:#e74c3c26;color:var(--danger);border:1px solid rgba(231,76,60,.3)}#status.info{background:#6c5ce726;color:var(--accent);border:1px solid rgba(108,92,231,.3)}canvas{width:100%;border-radius:6px;margin-bottom:1rem}#progress-bar{width:100%;height:6px;background:var(--bg);border-radius:3px;overflow:hidden}#progress-fill{height:100%;width:0%;background:var(--accent);transition:width .2s}#progress-text{text-align:center;color:var(--muted);font-size:.85rem;margin:.5rem 0}#download-link{display:block;text-align:center;padding:.75rem;margin-top:1rem;background:#27ae60;color:#fff;font-weight:600;border-radius:6px;text-decoration:none;transition:background .2s}#download-link:hover{background:#2ecc71}@media (max-width: 500px){.row{flex-direction:column;gap:0}#app{padding:1rem .5rem}}