*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0d0d0f;--surface: #17171b;--surface2: #1e1e24;--border: #2a2a34;--accent: #7c5cfc;--accent2: #a78bfa;--green: #22d3a2;--red: #f87171;--text: #e8e8f0;--muted: #7070a0;font-family:Inter,Segoe UI,system-ui,sans-serif}body{background:var(--bg);color:var(--text);min-height:100vh;display:flex;flex-direction:column}#root{flex:1;display:flex;flex-direction:column}.app{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:40px 20px 60px}.header{text-align:center;margin-bottom:52px}.logo{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:12px}.logo-icon{font-size:2rem}.logo h1{font-size:2rem;font-weight:700;letter-spacing:-.5px}.logo h1 span{color:var(--accent2)}.header p{color:var(--muted);font-size:1rem;max-width:420px;margin:0 auto}.card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:40px;width:100%;max-width:680px}.drop-zone{border:2px dashed var(--border);border-radius:14px;padding:56px 32px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;position:relative}.drop-zone:hover,.drop-zone.drag-over{border-color:var(--accent);background:#7c5cfc0f}.drop-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}.drop-icon{font-size:2.4rem;margin-bottom:12px}.drop-zone h2{font-size:1.1rem;font-weight:600;margin-bottom:6px}.drop-zone p{color:var(--muted);font-size:.9rem}.drop-zone .supported{margin-top:12px;font-size:.78rem;color:var(--muted)}.file-info{background:var(--surface2);border:1px solid var(--border);border-radius:12px;padding:16px 20px;display:flex;align-items:center;gap:14px;margin-bottom:20px}.file-info .file-icon{font-size:1.6rem}.file-info .file-meta{flex:1;min-width:0}.file-info .file-name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-info .file-size{font-size:.82rem;color:var(--muted);margin-top:2px}.btn-clear{background:none;border:none;cursor:pointer;color:var(--muted);font-size:1.2rem;padding:4px;border-radius:6px;transition:color .15s}.btn-clear:hover{color:var(--red)}.waveform-wrap{background:var(--surface2);border:1px solid var(--border);border-radius:12px;padding:14px 18px;margin-bottom:20px;overflow:hidden}.waveform-label{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:8px}.btn-master{width:100%;padding:16px;background:linear-gradient(135deg,var(--accent),#a855f7);border:none;border-radius:12px;color:#fff;font-size:1rem;font-weight:700;letter-spacing:.02em;cursor:pointer;transition:opacity .2s,transform .1s}.btn-master:hover:not(:disabled){opacity:.9;transform:translateY(-1px)}.btn-master:active:not(:disabled){transform:translateY(0)}.btn-master:disabled{opacity:.5;cursor:not-allowed}.progress-wrap{margin-top:24px}.progress-label{display:flex;justify-content:space-between;align-items:center;font-size:.85rem;color:var(--muted);margin-bottom:8px}.progress-label .step-name{color:var(--text);font-weight:500}.progress-bar-bg{height:6px;background:var(--border);border-radius:99px;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--green));border-radius:99px;transition:width .4s ease}.progress-steps{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.step-pill{font-size:.72rem;font-weight:600;padding:3px 10px;border-radius:99px;border:1px solid var(--border);color:var(--muted);transition:all .2s}.step-pill.active{border-color:var(--accent);color:var(--accent2);background:#7c5cfc1f}.step-pill.done{border-color:var(--green);color:var(--green);background:#22d3a21a}.result-box{margin-top:28px;background:var(--surface2);border:1px solid var(--green);border-radius:14px;padding:24px;text-align:center}.result-box .check{font-size:2.2rem;margin-bottom:8px}.result-box h3{font-size:1.1rem;font-weight:700;margin-bottom:4px}.result-box p{color:var(--muted);font-size:.88rem;margin-bottom:18px}.btn-download{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:var(--green);border:none;border-radius:10px;color:#0d0d0f;font-weight:700;font-size:.95rem;cursor:pointer;text-decoration:none;transition:opacity .15s}.btn-download:hover{opacity:.88}.error-box{margin-top:20px;background:#f871711a;border:1px solid var(--red);border-radius:12px;padding:16px 20px;color:var(--red);font-size:.9rem}.footer{margin-top:40px;text-align:center;color:var(--muted);font-size:.78rem}