:root {
    --bg: #0d0f14;
    --surface: #161a23;
    --surface2: #1e2433;
    --border: #2a3147;
    --accent: #f5c842;
    --accent2: #3dffc0;
    --red: #ff4e6a;
    --text: #e8eaf0;
    --muted: #6b7494;
    --green: #3dffc0;
    --radius: 12px;
    --mono: 'IBM Plex Mono', monospace;
    --display: 'Inter', 'Segoe UI', Arial, sans-serif;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { font-size: 16px; }
  body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--display);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  /* ── HEADER ── */
  header {
    width: 100%;
    max-width: 860px;
    padding: 32px 24px 0;
    display: flex;
    align-items: center;
    gap: 16px;
  }
  .logo-badge {
    background: var(--accent);
    color: #0d0f14;
    font-weight: 800;
    font-size: 11px;
    letter-spacing: .12em;
    padding: 4px 10px;
    border-radius: 6px;
    text-transform: uppercase;
  }
  header h1 {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -.01em;
  }
  header h1 span { color: var(--accent); }

  /* ── MODE TABS ── */
  .mode-tabs {
    width: 100%;
    max-width: 860px;
    padding: 28px 24px 0;
    display: flex;
    gap: 8px;
  }
  .tab-btn {
    padding: 10px 22px;
    border-radius: 8px;
    border: 1.5px solid var(--border);
    background: transparent;
    color: var(--muted);
    font-family: var(--display);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all .18s;
  }
  .tab-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #0d0f14;
  }
  .tab-btn:not(.active):hover {
    border-color: var(--accent);
    color: var(--accent);
  }

  /* ── MAIN CARD ── */
  .main {
    width: 100%;
    max-width: 860px;
    padding: 20px 24px 60px;
  }
  .panel { display: none; }
  .panel.active { display: block; }

  /* ── CLIP PILLS ── */
  .clip-pills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 20px;
  }
  .clip-pill {
    padding: 7px 18px;
    border-radius: 999px;
    border: 1.5px solid var(--border);
    background: var(--surface);
    color: var(--muted);
    font-family: var(--mono);
    font-size: 13px;
    cursor: pointer;
    transition: all .18s;
    display: flex;
    align-items: center;
    gap: 6px;
  }
  .clip-pill:hover { border-color: var(--accent); color: var(--accent); }
  .clip-pill.active { border-color: var(--accent); color: var(--accent); background: rgba(245,200,66,.1); }
  .clip-pill.done { border-color: var(--green); color: var(--green); background: rgba(61,255,192,.08); }
  .clip-pill.done::after { content: '✓'; font-size: 11px; }

  /* ── AUDIO CARD ── */
  .audio-card {
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 16px;
  }
  .clip-label {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .1em;
    color: var(--muted);
    text-transform: uppercase;
    margin-bottom: 16px;
  }

  /* waveform / progress bar */
  .waveform-wrap {
    position: relative;
    height: 54px;
    background: var(--surface2);
    border-radius: 8px;
    margin-bottom: 16px;
    overflow: hidden;
    cursor: pointer;
  }
  .waveform-progress {
    position: absolute;
    left: 0; top: 0; bottom: 0;
    background: rgba(245,200,66,.15);
    transition: width .1s linear;
    pointer-events: none;
  }
  .waveform-bars {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 0 10px;
    pointer-events: none;
  }
  .waveform-bars span {
    flex: 1;
    background: var(--border);
    border-radius: 2px;
    transition: background .2s;
  }
  .waveform-wrap:hover .waveform-bars span { background: var(--accent); opacity: .5; }
  .waveform-cursor {
    position: absolute;
    top: 0; bottom: 0;
    width: 2px;
    background: var(--accent);
    pointer-events: none;
    transition: left .1s linear;
  }
  .time-display {
    position: absolute;
    right: 10px; top: 50%;
    transform: translateY(-50%);
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
    pointer-events: none;
  }

  /* transport */
  .transport {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  .t-btn {
    width: 38px; height: 38px;
    border-radius: 50%;
    border: 1.5px solid var(--border);
    background: var(--surface2);
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .15s;
  }
  .t-btn:hover { border-color: var(--accent); color: var(--accent); }
  .t-btn.play-btn {
    width: 46px; height: 46px;
    background: var(--accent);
    border-color: var(--accent);
    color: #0d0f14;
    font-size: 15px;
  }
  .t-btn.play-btn:hover { background: #ffd84a; }

  /* shortcut hint */
  .shortcut-hint {
    margin-left: auto;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
    display: flex;
    gap: 14px;
  }
  .shortcut-hint kbd {
    background: var(--surface2);
    border: 1px solid var(--border);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 10px;
    color: var(--text);
  }

  /* ── TRANSCRIPT ── */
  .transcript-section {
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin-bottom: 16px;
    min-height: 100px;
  }
  .transcript-label {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .1em;
    color: var(--muted);
    text-transform: uppercase;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .transcript-label .badge {
    background: rgba(245,200,66,.12);
    color: var(--accent);
    border: 1px solid rgba(245,200,66,.3);
    border-radius: 4px;
    padding: 1px 7px;
    font-size: 10px;
  }
  .words-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 40px;
  }
  .word-chip {
    padding: 8px 14px;
    border-radius: 8px;
    border: 1.5px solid var(--border);
    background: var(--surface2);
    font-family: var(--mono);
    font-size: 15px;
    cursor: pointer;
    transition: all .18s;
    user-select: none;
    opacity: 0;
    transform: translateY(6px);
  }
  .word-chip.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity .25s, transform .25s;
  }
  .word-chip:hover { border-color: var(--accent); }
  .word-chip.error {
    background: rgba(255,78,106,.15);
    border-color: var(--red);
    color: var(--red);
  }
  .transcript-hidden {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-family: var(--mono);
    font-size: 13px;
    padding: 12px 0;
  }

  /* ── STATS BAR ── */
  .stats-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 16px;
  }
  .stat-chip {
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: 8px;
    padding: 10px 18px;
    display: flex;
    flex-direction: column;
    gap: 2px;
  }
  .stat-chip .stat-val {
    font-size: 22px;
    font-weight: 700;
    line-height: 1;
  }
  .stat-chip .stat-lbl {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--muted);
  }
  .stat-chip.errors .stat-val { color: var(--red); }
  .stat-chip.rate .stat-val { color: var(--accent); }

  /* ── ACTION ROW ── */
  .action-row {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
  }
  .btn {
    padding: 11px 22px;
    border-radius: 8px;
    border: 1.5px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-family: var(--display);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all .15s;
  }
  .btn:hover { border-color: var(--accent); color: var(--accent); }
  .btn.primary { background: var(--accent); border-color: var(--accent); color: #0d0f14; }
  .btn.primary:hover { background: #ffd84a; }
  .btn.danger { border-color: var(--red); color: var(--red); }
  .btn.danger:hover { background: rgba(255,78,106,.1); }
  .btn:disabled { opacity: .4; cursor: not-allowed; }

  /* ── MIC SECTION ── */
  .mic-panel-inner { display: flex; flex-direction: column; gap: 16px; }

  /* Steps */
  .steps {
    display: flex;
    align-items: center;
    gap: 0;
    margin-bottom: 4px;
  }
  .step {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 12px;
    color: var(--muted);
    padding: 8px 16px 8px 0;
  }
  .step-num {
    width: 26px; height: 26px;
    border-radius: 50%;
    border: 1.5px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
    transition: all .2s;
  }
  .step.active .step-num { background: var(--accent); border-color: var(--accent); color: #0d0f14; }
  .step.done .step-num { background: var(--green); border-color: var(--green); color: #0d0f14; }
  .step.active { color: var(--text); }
  .step.done { color: var(--green); }
  .step-line {
    flex: 1;
    height: 1.5px;
    background: var(--border);
    margin: 0 4px;
    max-width: 60px;
  }

  /* Visualizer */
  .visualizer-card {
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
  }
  .viz-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
  }
  .viz-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
  }
  .rec-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 13px;
    color: var(--red);
    display: none;
  }
  .rec-indicator.active { display: flex; }
  .rec-dot {
    width: 9px; height: 9px;
    border-radius: 50%;
    background: var(--red);
    animation: pulse-dot 1s infinite;
  }
  @keyframes pulse-dot { 0%,100% { opacity:1; } 50% { opacity:.2; } }

  .viz-bars {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 64px;
    margin-bottom: 20px;
  }
  .viz-bar {
    flex: 1;
    background: var(--border);
    border-radius: 3px 3px 0 0;
    height: 6px;
    transition: height .06s ease;
  }
  .viz-bar.active-bar { background: var(--accent); }

  /* Playback */
  .playback-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
  }

  /* Mic transcript */
  .mic-transcript-card {
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 24px;
    min-height: 90px;
  }
  .loading-dots {
    display: flex;
    gap: 6px;
    align-items: center;
    padding: 10px 0;
  }
  .loading-dots span {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: dot-bounce .9s infinite;
  }
  .loading-dots span:nth-child(2) { animation-delay: .15s; }
  .loading-dots span:nth-child(3) { animation-delay: .3s; }
  @keyframes dot-bounce { 0%,80%,100%{transform:scale(.5);opacity:.4} 40%{transform:scale(1);opacity:1} }

  .api-error {
    color: var(--red);
    font-family: var(--mono);
    font-size: 13px;
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  /* ── COMPLETION ── */
  .completion-panel {
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 36px;
    text-align: center;
  }
  .completion-panel h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
  }
  .completion-panel h2 span { color: var(--accent); }
  .completion-panel p {
    color: var(--muted);
    font-family: var(--mono);
    font-size: 13px;
    margin-bottom: 32px;
  }
  .results-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--mono);
    font-size: 13px;
    margin-bottom: 28px;
    text-align: left;
  }
  .results-table th {
    color: var(--muted);
    font-weight: 500;
    letter-spacing: .06em;
    text-transform: uppercase;
    font-size: 11px;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
  }
  .results-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
  }
  .results-table tr:last-child td { border-bottom: none; }
  .error-rate-cell { color: var(--accent); font-weight: 700; }

  /* ── TOAST ── */
  .toast {
    position: fixed;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--mono);
    font-size: 13px;
    padding: 10px 20px;
    border-radius: 8px;
    opacity: 0;
    transition: opacity .2s, transform .2s;
    pointer-events: none;
    z-index: 999;
    white-space: nowrap;
  }
  .toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

  /* Divider */
  .section-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 8px 0 16px;
    color: var(--muted);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
  }
  .section-divider::before, .section-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
  }

  /* Helper */
  .hidden { display: none !important; }

:root {
    --bg: #f5f4f1;
    --surface: rgba(255, 255, 255, 0.74);
    --surface2: #ece9e3;
    --border: rgba(17, 20, 24, 0.08);
    --border-strong: rgba(17, 20, 24, 0.14);
    --accent: #cf0d12;
    --red: #cf0d12;
    --text: #111418;
    --muted: #7a7d84;
    --green: #1f8f62;
    --shadow: 0 18px 48px rgba(17, 20, 24, 0.06);
    --radius: 28px;
  }
  body {
    display: block;
    color: var(--text);
    background:
      radial-gradient(circle at top left, rgba(255,255,255,.85), transparent 34%),
      linear-gradient(180deg, #faf9f7 0%, #f1efeb 100%);
    overflow-x: hidden;
  }
  .page-shell {
    width: min(1480px, calc(100% - 40px));
    margin: 0 auto;
    padding: 24px 0 40px;
  }
  header {
    max-width: none;
    width: 100%;
    padding: 0 22px;
    min-height: 88px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }
  .brand-row {
    display: flex;
    align-items: center;
    gap: 28px;
  }
  .logo-badge {
    background: transparent;
    color: var(--text);
    padding: 0;
    border-radius: 0;
    font-size: 17px;
    letter-spacing: -.04em;
  }
  .logo-badge .stack {
    display: block;
  }
  header h1 {
    display: none;
  }
  .mode-tabs {
    max-width: none;
    width: auto;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 14px;
  }
  .tab-btn {
    padding: 8px 4px 10px;
    border: none;
    border-bottom: 3px solid transparent;
    border-radius: 0;
    background: transparent;
    color: var(--muted);
    transition: color .18s, border-color .18s;
  }
  .tab-btn.active {
    background: transparent;
    color: var(--text);
    border-color: var(--text);
  }
  .tab-btn:not(.active):hover {
    border-color: transparent;
    color: var(--text);
  }
  .header-progress {
    font-size: 14px;
    font-weight: 600;
    color: #2d3036;
    white-space: nowrap;
  }
  .main {
    max-width: none;
    padding: 18px 0 0;
  }
  .panel-shell {
    background: rgba(255,255,255,0.36);
    border: 1px solid rgba(255,255,255,0.6);
    border-radius: 34px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
    padding: 26px;
  }
  .clip-pills {
    gap: 10px;
    margin-bottom: 18px;
  }
  .clip-pill {
    padding: 10px 18px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.75);
    color: var(--muted);
    font-size: 12px;
    box-shadow: 0 4px 14px rgba(17, 20, 24, 0.04);
  }
  .clip-pill:hover {
    border-color: var(--border-strong);
    color: var(--text);
  }
  .clip-pill.active {
    border-color: var(--text);
    color: var(--text);
    background: #fff;
  }
  .clip-pill.done {
    border-color: rgba(31,143,98,.2);
    color: var(--green);
    background: rgba(31,143,98,.08);
  }
  .clip-pill.done::after {
    content: '✓';
  }
  .audio-card,
  .transcript-section,
  .visualizer-card,
  .mic-transcript-card,
  .completion-panel,
  .stat-chip {
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
  }
  .audio-card,
  .visualizer-card,
  .transcript-section,
  .mic-transcript-card,
  .completion-panel {
    border-radius: var(--radius);
  }
  .completion-panel {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .audio-card {
    padding: 32px 36px;
    margin-bottom: 22px;
  }
  .clip-label,
  .transcript-label,
  .stat-chip .stat-lbl,
  .panel-footer .footer-note {
    letter-spacing: .16em;
  }
  .waveform-wrap {
    height: 70px;
    background: linear-gradient(180deg, #f0efec 0%, #ece9e4 100%);
    border-radius: 20px;
    margin-bottom: 28px;
  }
  .waveform-progress {
    background: linear-gradient(90deg, #111418 0%, #111418 98%, rgba(207, 13, 18, 0.85) 100%);
  }
  .waveform-bars {
    gap: 6px;
    padding: 0 26px;
  }
  .waveform-bars span {
    background: rgba(17, 20, 24, 0.14);
    border-radius: 999px;
  }
  .waveform-wrap:hover .waveform-bars span {
    background: rgba(17, 20, 24, 0.2);
    opacity: 1;
  }
  .waveform-cursor {
    background: #cf0d12;
  }
  .time-display {
    color: rgba(17, 20, 24, 0.52);
    mix-blend-mode: multiply;
  }
  .transport {
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
  }
  .t-btn {
    width: 60px;
    height: 60px;
    border-radius: 18px;
    border: 1px solid transparent;
    background: #ece9e4;
    color: var(--text);
    font-size: 15px;
  }
  .t-btn:hover {
    border-color: var(--border-strong);
    color: var(--text);
    background: #e5e2dd;
  }
  .t-btn.play-btn {
    width: 100px;
    height: 100px;
    background: #111418;
    border-color: #111418;
    color: #fff;
    font-size: 28px;
    box-shadow: 0 16px 30px rgba(17, 20, 24, 0.12);
  }
  .t-btn.play-btn:hover {
    background: #0a0c0f;
  }
  .shortcut-hint {
    width: 100%;
    margin-left: 0;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 6px;
  }
  .shortcut-hint kbd {
    background: #fff;
    border: 1px solid var(--border);
    padding: 3px 8px;
    border-radius: 999px;
    color: var(--text);
  }
  .transcript-section,
  .mic-transcript-card {
    padding: 32px 36px 40px;
    min-height: 240px;
    margin-bottom: 22px;
  }
  .transcript-label {
    margin-bottom: 26px;
  }
  .transcript-label .badge {
    background: rgba(17,20,24,.04);
    color: var(--muted);
    border: 1px solid rgba(17,20,24,.08);
    border-radius: 999px;
    padding: 4px 10px;
  }
  .words-wrap {
    gap: 18px 22px;
    min-height: 130px;
  }
  .word-chip {
    padding: 10px 18px;
    border-radius: 18px;
    border: 1px solid transparent;
    background: #efeeea;
    font-family: var(--display);
    font-size: clamp(1.5rem, 2.9vw, 3.25rem);
    line-height: 1.1;
    letter-spacing: -.05em;
  }
  .word-chip:hover {
    border-color: transparent;
    background: #e8e6e1;
  }
  .word-chip.error {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 10px 24px rgba(207, 13, 18, 0.18);
  }
  .transcript-hidden {
    font-family: var(--display);
    font-size: 18px;
  }
  .stats-bar {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 22px;
  }
  .stat-chip {
    border-radius: 24px;
    padding: 20px 22px;
    gap: 8px;
  }
  .stat-chip .stat-val {
    font-size: clamp(2rem, 4vw, 3.75rem);
    line-height: 1;
    letter-spacing: -.06em;
    color: var(--text);
  }
  .stat-chip.errors .stat-val {
    color: var(--red);
  }
  .action-row {
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-top: 8px;
  }
  .btn {
    padding: 14px 22px;
    border-radius: 18px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.74);
    color: var(--text);
    box-shadow: 0 8px 20px rgba(17, 20, 24, 0.05);
  }
  .btn:hover {
    color: var(--text);
    border-color: var(--border-strong);
    background: #fff;
  }
  .btn.primary {
    background: #1b1d22;
    border-color: #1b1d22;
    color: #fff;
    min-width: 160px;
    justify-content: center;
  }
  .btn.primary:hover {
    background: #111418;
    color: #fff;
  }
  .steps {
    margin-bottom: 2px;
  }
  .step-num {
    border: 1px solid var(--border-strong);
    background: rgba(255,255,255,0.74);
  }
  .step.active .step-num {
    background: var(--text);
    border-color: var(--text);
    color: #fff;
  }
  .step.done .step-num {
    color: #fff;
  }
  .visualizer-card {
    padding: 34px 36px;
  }
  .viz-stage {
    position: relative;
    display: flex;
    align-items: end;
    justify-content: center;
    gap: 18px;
    min-height: 150px;
    margin: 0 auto 28px;
    padding: 18px 22px 14px;
    max-width: 420px;
    border-radius: 26px;
    background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(239,236,230,0.95));
    border: 1px solid rgba(17,20,24,0.08);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
  }
  .viz-scale {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-self: stretch;
    width: 24px;
    padding: 4px 0 8px;
  }
  .viz-scale span {
    height: 1px;
    background: rgba(17,20,24,0.1);
  }
  .viz-bars {
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 7px;
    height: 118px;
    width: min(100%, 300px);
    padding: 8px 10px 0;
    border-radius: 18px;
    background:
      linear-gradient(180deg, rgba(17,20,24,0.02), rgba(17,20,24,0.06)),
      repeating-linear-gradient(
        to right,
        rgba(17,20,24,0.035) 0,
        rgba(17,20,24,0.035) 1px,
        transparent 1px,
        transparent 26px
      );
  }
  .viz-bar {
    flex: 1 1 0;
    min-width: 5px;
    max-width: 8px;
    min-height: 16px;
    background: linear-gradient(180deg, rgba(17,20,24,0.28), rgba(17,20,24,0.14));
    border-radius: 999px;
    opacity: 1;
    transform-origin: bottom center;
    transition: height .08s ease, background-color .12s ease, opacity .12s ease, transform .12s ease;
  }
  .viz-bar.active-bar {
    background: linear-gradient(180deg, rgba(227,65,71,0.72), rgba(207,13,18,0.42));
    transform: scaleY(1.02);
  }
  .playback-row {
    justify-content: center;
    gap: 12px;
  }
  .error-rate-cell {
    color: var(--red);
  }
  .panel-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 8px;
    padding: 18px 10px 0;
    color: var(--muted);
    font-size: 12px;
  }
  .toast {
    background: rgba(17,20,24,0.92);
    border: 1px solid rgba(255,255,255,0.08);
    color: #fff;
    border-radius: 999px;
  }
  @media (max-width: 980px) {
    .page-shell {
      width: min(100%, calc(100% - 20px));
      padding-top: 12px;
    }
    header,
    .brand-row,
    .meta-row,
    .action-row,
    .panel-footer {
      flex-direction: column;
      align-items: flex-start;
    }
    .audio-card,
    .transcript-section,
    .visualizer-card,
    .mic-transcript-card,
    .completion-panel,
    .panel-shell {
      padding-left: 18px;
      padding-right: 18px;
    }
    .stats-bar {
      grid-template-columns: 1fr;
    }
    .transport,
    .shortcut-hint,
    .playback-row {
      justify-content: flex-start;
    }
    .word-chip {
      font-size: clamp(1.2rem, 8vw, 2rem);
    }
  }

  @media (max-width: 720px) {
    html,
    body {
      overflow-x: hidden;
    }
    .page-shell {
      width: calc(100% - 12px);
      padding-top: 8px;
      padding-bottom: 24px;
    }
    header {
      padding: 0 10px;
      min-height: auto;
      gap: 14px;
    }
    .brand-row {
      width: 100%;
      gap: 14px;
    }
    .mode-tabs {
      width: 100%;
      gap: 10px;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: none;
    }
    .mode-tabs::-webkit-scrollbar,
    .clip-pills::-webkit-scrollbar,
    .steps::-webkit-scrollbar,
    .completion-panel::-webkit-scrollbar {
      display: none;
    }
    .tab-btn {
      flex: 0 0 auto;
      white-space: nowrap;
    }
    .header-progress {
      width: 100%;
      padding: 0 10px;
      white-space: normal;
      font-size: 13px;
    }
    .main {
      padding-top: 12px;
    }
    .panel-shell,
    .audio-card,
    .visualizer-card,
    .transcript-section,
    .mic-transcript-card,
    .completion-panel {
      padding: 16px;
      border-radius: 24px;
    }
    .clip-pills {
      flex-wrap: nowrap;
      overflow-x: auto;
      overflow-y: hidden;
      padding-bottom: 4px;
      margin: 0 -4px 16px;
      scroll-snap-type: x proximity;
      -webkit-overflow-scrolling: touch;
    }
    .clip-pill {
      flex: 0 0 auto;
      white-space: nowrap;
      scroll-snap-align: start;
    }
    .waveform-wrap {
      height: 62px;
      margin-bottom: 18px;
    }
    .waveform-bars {
      gap: 4px;
      padding: 0 14px;
    }
    .transport,
    .playback-row,
    .action-row {
      align-items: stretch;
      gap: 10px;
    }
    .transport {
      justify-content: center;
    }
    .t-btn {
      width: 52px;
      height: 52px;
      border-radius: 16px;
      flex: 0 0 auto;
    }
    .t-btn.play-btn {
      width: 82px;
      height: 82px;
      font-size: 22px;
    }
    .shortcut-hint {
      width: 100%;
      gap: 8px;
      font-size: 10px;
    }
    .transcript-section,
    .mic-transcript-card {
      min-height: 180px;
    }
    .words-wrap {
      gap: 12px;
      min-height: 100px;
    }
    .word-chip {
      max-width: 100%;
      padding: 10px 14px;
      font-size: clamp(1rem, 7vw, 1.5rem);
      line-height: 1.2;
      overflow-wrap: anywhere;
    }
    .steps {
      overflow-x: auto;
      overflow-y: hidden;
      padding-bottom: 4px;
      -webkit-overflow-scrolling: touch;
    }
    .step,
    .step-line {
      flex: 0 0 auto;
    }
    .viz-stage {
      min-height: 128px;
      padding: 14px 12px 12px;
      gap: 12px;
    }
    .viz-bars {
      gap: 5px;
      height: 100px;
      padding: 8px 8px 0;
    }
    .stats-bar {
      gap: 12px;
    }
    .stat-chip {
      padding: 16px;
      border-radius: 18px;
    }
    .stat-chip .stat-val {
      font-size: clamp(1.6rem, 10vw, 2.3rem);
    }
    .btn {
      width: 100%;
      min-width: 0;
      justify-content: center;
    }
    .results-table {
      min-width: 620px;
    }
    .toast {
      left: 12px;
      right: 12px;
      bottom: 16px;
      transform: translateY(20px);
      white-space: normal;
    }
    .toast.show {
      transform: translateY(0);
    }
  }

  .visualizer-card {
    position: relative;
    overflow: hidden;
  }
  .visualizer-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.42), rgba(255,255,255,0));
    pointer-events: none;
  }
  .viz-bars::after {
    content: '';
    position: absolute;
    left: 10px;
    right: 10px;
    bottom: 8px;
    height: 1px;
    background: rgba(17,20,24,0.08);
  }