:root{--bg: #0a0a0a;--surface: #111111;--border: #1e1e1e;--border-hi: #2a2a2a;--text: #e8e8e8;--muted: #555555;--accent: #c8f135;--accent-dim: #8aab1e;--error: #ff4d4d;--success: #4dff91;--font-sans: "Syne", sans-serif;--font-mono: "JetBrains Mono", monospace;--radius: 10px;--radius-sm: 6px}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 0);background-size:24px 24px}a{color:inherit;text-decoration:none}button{font-family:var(--font-mono)}.container{max-width:740px;margin:0 auto;padding:52px 28px 80px;display:flex;flex-direction:column;gap:20px}.header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-bottom:4px}.brand-btn{display:flex;flex-direction:column;gap:5px;background:none;border:none;padding:0;cursor:pointer;text-align:left;transition:opacity .15s ease}.brand-btn:hover{opacity:.85}.brand-title{font-size:30px;font-weight:700;letter-spacing:-.5px;color:var(--accent);font-family:var(--font-sans)}.brand-tagline{font-size:13px;color:var(--muted);font-family:var(--font-mono)}.divider{height:1px;background:var(--border);margin:0 0 4px}.back-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 16px;border-radius:var(--radius-sm);border:1px solid var(--border-hi);background:#161616;color:var(--muted);font-family:var(--font-mono);font-size:13px;font-weight:600;cursor:pointer;transition:color .2s ease,border-color .2s ease,transform .1s ease;white-space:nowrap;flex-shrink:0}.back-btn:hover{color:var(--text);border-color:var(--accent);transform:translate(-2px)}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px}.input-card{display:flex;flex-direction:column;gap:12px}.label{font-family:var(--font-mono);font-size:13px;color:var(--muted)}.input-row{display:flex;gap:10px}.input{flex:1;padding:14px;border-radius:var(--radius-sm);border:1px solid var(--border-hi);background:#0f0f0f;color:var(--text);font-family:var(--font-mono);font-size:15px;transition:border-color .2s ease,box-shadow .2s ease}.input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px #c8f13526}.button{padding:14px 18px;border-radius:var(--radius-sm);border:1px solid var(--border-hi);background:var(--border-hi);color:var(--text);font-weight:700;font-family:var(--font-mono);cursor:pointer;transition:transform .1s ease,background .2s ease,border-color .2s ease}.button.primary{background:var(--accent);color:#0c0c0c;border-color:var(--accent-dim)}.button.secondary{background:#161616}.button:hover:not(:disabled){transform:translateY(-1px)}.button:disabled{cursor:not-allowed;opacity:.6}.muted{color:var(--muted);font-family:var(--font-mono);font-size:13px}.status-card{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.status-main{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:600}.pulse{width:12px;height:12px;border-radius:50%;background:var(--muted);box-shadow:0 0 #c8f13580;animation:pulse 1.5s ease infinite}.pulse.success{background:var(--success);box-shadow:none;animation:none}.pulse.error{background:var(--error);box-shadow:none;animation:none}@keyframes pulse{0%{box-shadow:0 0 #c8f1354d}70%{box-shadow:0 0 0 8px #c8f13500}to{box-shadow:0 0 #c8f13500}}.badges{display:flex;align-items:center;gap:8px}.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:var(--radius-sm);background:#1a1a1a;border:1px solid var(--border-hi);font-family:var(--font-mono);font-size:12px;color:var(--text)}.stepper{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.step{padding:14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:#0f0f0f;display:flex;gap:12px;align-items:center;transition:border-color .2s ease,transform .2s ease}.step-number{width:28px;height:28px;border-radius:50%;border:1px solid var(--border-hi);display:grid;place-items:center;font-family:var(--font-mono);color:var(--muted);background:#111}.step-number.check{background:var(--accent);color:#0c0c0c;border-color:var(--accent-dim);font-weight:700}.step-number.failed{border-color:var(--error);color:var(--error)}.step-number.pulse-dot{animation:pulse 1.5s ease infinite;box-shadow:0 0 #c8f1354d}.step-label{display:flex;flex-direction:column;gap:4px}.step-title{font-weight:600}.step-status{font-family:var(--font-mono);font-size:12px;color:var(--muted)}.step.active{border-color:var(--accent);transform:translateY(-1px)}.step.completed{border-color:var(--accent)}.step.failed{border-color:var(--error)}.video-card{display:grid;grid-template-columns:120px 1fr;gap:12px;align-items:center}.thumbnail{width:120px;height:68px;border-radius:var(--radius-sm);object-fit:cover;border:1px solid var(--border)}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.download-button{display:block;padding:16px;border-radius:var(--radius-sm);border:1px solid var(--border-hi);background:#151515;color:var(--text);text-decoration:none;font-weight:700;transition:transform .1s ease,border-color .2s ease}.download-button.primary{background:var(--accent);color:#0c0c0c;border-color:var(--accent-dim)}.download-button:hover{transform:translateY(-1px)}.download-sub{margin-top:6px;font-family:var(--font-mono);color:var(--muted);font-size:12px}.error-banner{border:1px solid var(--error);border-radius:var(--radius-sm);padding:12px 14px;background:#1a0a0a;color:var(--error);display:flex;align-items:center;justify-content:space-between;gap:8px;font-family:var(--font-mono)}.error-text{flex:1}.close-button{background:transparent;color:var(--error);border:1px solid var(--error);border-radius:var(--radius-sm);padding:8px 10px;cursor:pointer;font-family:var(--font-mono)}.meta-author{font-family:var(--font-mono);color:var(--muted);font-size:13px}.video-title{font-size:18px;font-weight:700;color:var(--text)}.inline-error{color:var(--error);font-family:var(--font-mono);font-size:12px}.actions-row{display:flex;gap:10px;justify-content:flex-end}@media (max-width: 640px){.container{padding:32px 16px 60px;gap:16px}.brand-title{font-size:24px}.input-row{flex-direction:column}.download-grid,.video-card{grid-template-columns:1fr}}