/* --- Base reset (replaces Tailwind preflight; html bg replaces daisyUI forest base-100) --- */
  *, ::before, ::after { box-sizing: border-box; border-width: 0; border-style: solid; border-color: #e5e7eb; }
  html { line-height: 1.5; -webkit-text-size-adjust: 100%; tab-size: 4; background-color: oklch(0.188409 0.00829 17.9116); }
  body { margin: 0; line-height: inherit; }
  h1, h2, h3, h4, h5, h6 { font-size: inherit; font-weight: inherit; margin: 0; }
  p, blockquote, figure { margin: 0; }
  ul, ol { list-style: none; margin: 0; padding: 0; }
  a { color: inherit; text-decoration: inherit; }
  b, strong { font-weight: bolder; }
  small { font-size: 80%; }
  table { text-indent: 0; border-color: inherit; border-collapse: collapse; }
  button, input, optgroup, select, textarea { font-family: inherit; font-size: 100%; font-weight: inherit; line-height: inherit; color: inherit; margin: 0; padding: 0; }
  button, [type='button'], [type='submit'] { -webkit-appearance: button; background-color: transparent; background-image: none; }
  img, svg, video, canvas { display: block; vertical-align: middle; }
  img, video { max-width: 100%; height: auto; }

  /* --- Utilities kept from Tailwind (markup unchanged) --- */
  .relative { position: relative; }
  .w-full { width: 100%; }
  .min-w-\[900px\] { min-width: 900px; }
  .px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
  .mb-2 { margin-bottom: 0.5rem; }
  .text-xs { font-size: 0.75rem; line-height: 1rem; }
  .font-medium { font-weight: 500; }
  .font-semibold { font-weight: 600; }
  .opacity-50 { opacity: 0.5; }
  .opacity-60 { opacity: 0.6; }
  .overflow-x-auto { overflow-x: auto; }
  .overflow-x-hidden { overflow-x: hidden; }
  @media (min-width: 640px) { .sm\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; } }

  /* --- Fonts: Space Grotesk everywhere --- */
  body { font-family: "Space Grotesk", "Helvetica Neue", "Helvetica", "Arial", sans-serif; color: var(--text-primary); }
  /* nav menu removed — unified nav */
  .dash-key, .dash-select, .dash-bpm-val { font-family: inherit; }
  code, .font-mono, .fret-number { font-family: "Space Grotesk", monospace; }
  /* --- Domain colours: intervals & qualities --- */
  :root {
    --int-R:  #D05540;
    --int-3:  #C8A838;
    --int-5:  #4890B8;
    --int-7:  #9870A8;
    --int-9:  #C88848;
    --int-11: #58A878;
    --int-13: #7878B8;
    --int-scale: #282834;
    --int-scale-text: #484858;
    --major: #B05038;
    --minor: #3A6888;
    --dim: #785880;
    --aug: #508060;
    /* Design system — hardware palette */
    --bg-surface: #1E252B;
    --bg-elevated: #252D35;
    --text-primary: #CDD0C2;
    --text-secondary: #A2A4A6;
    --text-muted: #545E69;
    --accent-copper: #8A653C;
    --accent-copper-light: #A97C50;
    --accent-navy: #2B4261;
    --accent-red: #CC1F00;
    --metallic: #747F8A;
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
  }

  /* Dashboard */
  .dashboard {
    position: relative;
    background: rgba(0,0,0,0.25);
    padding: 14px 20px;
    margin-top: 6px;
  }
  .dashboard::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.04) 20%, rgba(255,255,255,0.06) 50%, rgba(255,255,255,0.04) 80%, transparent);
    pointer-events: none;
  }
  .dash-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 16px;
    align-items: center;
  }
  .dash-key {
    --dk-r: 176; --dk-g: 80; --dk-b: 56;
    height: 38px;
    min-width: 38px;
    padding: 0 28px 0 12px;
    border-radius: 3px;
    font-size: 14px;
    font-weight: 600;
    background: linear-gradient(135deg, rgba(var(--dk-r),var(--dk-g),var(--dk-b),0.18), rgba(var(--dk-r),var(--dk-g),var(--dk-b),0.06));
    border: none;
    box-shadow: 0 0 0 1.5px rgba(var(--dk-r),var(--dk-g),var(--dk-b),0.25);
    color: var(--int-R);
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23B05038' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    transition: all 0.25s;
    flex-shrink: 0;
  }
  .dash-key:hover {
    background-color: rgba(var(--dk-r),var(--dk-g),var(--dk-b),0.08);
    box-shadow: 0 0 0 1.5px rgba(var(--dk-r),var(--dk-g),var(--dk-b),0.45), 0 0 24px rgba(var(--dk-r),var(--dk-g),var(--dk-b),0.08);
  }

  /* Anchor toggle: Key / Custom iOS-style switch */
  .anchor-switch {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
    -webkit-user-select: none;
  }
  .anchor-switch input { display: none; }
  .anchor-label {
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    color: rgba(255,255,255,0.35);
    transition: color 0.2s;
  }
  /* Left label (Key) active when unchecked */
  .anchor-switch input:not(:checked) ~ .anchor-label:last-child { color: rgba(255,255,255,0.35); }
  .anchor-switch .anchor-label:first-of-type { color: var(--int-R); }
  .anchor-switch input:checked ~ .anchor-label:last-child { color: var(--int-R); }
  .anchor-switch input:checked ~ .anchor-label:first-of-type { color: rgba(255,255,255,0.35); }
  /* Fix: first-of-type won't work with input before it, use nth-child */
  .anchor-label:nth-child(1) { color: var(--int-R); }
  .anchor-switch input:checked ~ .anchor-slider ~ .anchor-label { color: var(--int-R); }
  .anchor-switch:has(input:checked) .anchor-label:nth-child(1) { color: rgba(255,255,255,0.35); }
  .anchor-slider {
    position: relative;
    width: 40px;
    height: 22px;
    background: rgba(255,255,255,0.1);
    border-radius: 11px;
    transition: background 0.25s;
    flex-shrink: 0;
  }
  .anchor-slider::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: rgba(255,255,255,0.7);
    border-radius: 50%;
    transition: transform 0.25s, background 0.25s;
  }
  .anchor-switch input:checked + .anchor-slider {
    background: rgba(var(--dk-r, 224),var(--dk-g, 160),var(--dk-b, 56),0.4);
  }
  .anchor-switch input:checked + .anchor-slider::after {
    transform: translateX(18px);
    background: var(--int-R);
  }

  .dash-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
  }
  .dash-select {
    font-size: 12px;
    height: 36px;
    min-height: 36px;
    padding: 0 28px 0 10px;
    border-radius: 3px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.07);
    color: inherit;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23555' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
  }
  .dash-select:hover, .dash-select:focus {
    border-color: rgba(138,101,60,0.4);
    background-color: rgba(255,255,255,0.05);
    outline: none;
  }
  .dash-select:disabled { opacity: 0.25; pointer-events: none; }
  .dash-icon-group {
    display: flex;
    align-items: stretch;
    border-radius: 3px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    overflow: visible;
    flex-shrink: 0;
  }
  .dash-icon-btn {
    height: 38px;
    padding: 0 12px;
    min-width: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1px;
    background: transparent;
    border: none;
    cursor: pointer;
    user-select: none;
    transition: all 0.15s;
    opacity: 0.25;
    color: inherit;
  }
  .dash-icon-btn + .dash-icon-btn {
    border-left: 1px solid rgba(255,255,255,0.04);
  }
  .dash-icon-btn { position: relative; }
  .dash-icon-btn:hover { opacity: 0.45; background: rgba(255,255,255,0.03); }
  .dash-icon-btn[data-tip]::after {
    content: attr(data-tip);
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: #1a1a22;
    color: #cdd0c2;
    font: 500 11px/1.2 'Space Grotesk', system-ui, sans-serif;
    padding: 4px 8px;
    border-radius: 4px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 100;
    border: 1px solid rgba(255,255,255,0.1);
  }
  .dash-icon-btn[data-tip]:hover::after { opacity: 1; }
  .dash-icon-btn.on {
    opacity: 0.65;
    background: rgba(255,255,255,0.03);
  }
  .int-chips {
    display: flex;
    align-items: center;
    gap: 0;
    height: 38px;
    background: rgba(0,0,0,0.25);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 3px;
    overflow: hidden;
    flex-shrink: 0;
  }
  .int-chip {
    height: 100%;
    padding: 0 8px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 11px;
    font-weight: 600;
    opacity: 0.2;
    transition: all 0.15s;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    border-right: 1px solid rgba(255,255,255,0.04);
  }
  .int-chip:last-child { border-right: none; }
  .int-chip:hover { opacity: 0.4; }
  .int-chip.on { opacity: 1; }
  .int-chip.disabled { opacity: 0.1; }
  .dash-sep {
    width: 1px;
    height: 24px;
    background: rgba(255,255,255,0.04);
    flex-shrink: 0;
  }
  /* Quality group rows in free mode */
  .quality-row {
    display: flex;
    align-items: center;
    gap: 0;
    height: 32px;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 3px;
    overflow: hidden;
  }
  .quality-row-label {
    font-size: 9px;
    opacity: 0.3;
    padding: 0 8px;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
  .quality-chip {
    height: 100%;
    padding: 0 7px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 11px;
    font-weight: 500;
    opacity: 0.25;
    transition: all 0.15s;
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    border-right: 1px solid rgba(255,255,255,0.03);
    color: inherit;
  }
  .quality-chip:last-child { border-right: none; }
  .quality-chip:hover { opacity: 0.5; }
  .quality-chip.on { opacity: 0.9; background: rgba(255,255,255,0.05); }
  /* Interval chips as legend under fretboard */
  #beatDisplay + #intChips {
    justify-content: center;
    margin: 4px auto 0;
    border: none;
    background: transparent;
    height: auto;
    gap: 4px;
  }
  #beatDisplay + #intChips .int-chip {
    height: 32px;
    font-size: 12px;
    padding: 0 10px;
  }
  /* Mode buttons: shown on all sizes (desktop layout in @media min-width: 841px) */

  /* Track search bar: hidden by default, shown in changes mode */
  #trackSearchBar {
    display: none;
    align-items: center;
    justify-content: center;
    background: #a2a4a6;
    color: #1a1a1a;
    font-family: inherit;
    font-weight: 600;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    -webkit-tap-highlight-color: transparent;
    opacity: 0.25;
    pointer-events: none;
  }
  body.changes-active #trackSearchBar { display: flex !important; }

  /* ========== MOBILE — synthesizer HUD layout ========== */
  @media (max-width: 840px) {
    /* Cell size: square int-chip sets the row height for entire HUD
       Edge-to-edge black frame: 10px padding each side + 6×6px gaps = 56px */
    :root { --cell: calc((100vw - 56px) / 7); --bento-gap: 6px; --bento-pad: 10px; --bento-r: 16px; }
    body {
      height: 100vh;
      height: 100dvh;
      overflow: hidden;
      min-height: 0 !important;
    }

    /* ---- viewTool: fill remaining space ---- */
    #viewTool {
      flex: 1 1 0% !important;
      min-height: 0;
      overflow: hidden;
      padding-top: 0px;
    }

    /* ---- Fretboard ---- */
    #fretboardWrap {
      justify-content: flex-start !important;
      align-items: center !important;
      overflow-x: auto;
      overflow-y: hidden;
      padding: 0 6px !important;
      scroll-behavior: smooth;
      -webkit-overflow-scrolling: touch;
    }
    body.left-handed #fretboardWrap {
      justify-content: flex-end !important;
    }

    /* ---- Beat display: hidden on mobile ---- */
    #beatDisplay {
      display: none !important;
    }

    /* ============================================
       HUD TABLE — one unified structure
       Merged cells, split cells, consistent gaps
       ============================================ */

    /* -- Interval chips: top row of bento grid -- */
    #intChips {
      display: grid !important;
      grid-template-columns: repeat(7, 1fr) !important;
      width: auto !important;
      margin: 0 !important;
      padding: var(--bento-pad) var(--bento-pad) var(--bento-gap) !important;
      border: none !important;
      background: linear-gradient(to bottom, #141418, #0e0e14) !important;
      border-radius: 0 !important;
      height: auto !important;
      gap: var(--bento-gap) !important;
      overflow: hidden !important;
      flex-shrink: 0;
      box-sizing: border-box;
    }
    #intChips .int-chip {
      height: var(--cell) !important;
      font-size: 15px !important;
      font-weight: 700;
      padding: 0 !important;
      margin: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--bento-r);
      border: none;
      border-right: none;
      opacity: 1;
      background: #1e1e24;
      --int-R: #686878; --int-3: #686878; --int-5: #686878;
      --int-7: #686878; --int-9: #686878; --int-11: #686878; --int-13: #686878;
    }
    #intChips .int-chip.on {
      background: #2a2228;
      box-shadow: inset 0 0 0 1.5px rgba(176,80,56,0.45);
      --int-R: #e0c8b8; --int-3: #e0c8b8; --int-5: #e0c8b8;
      --int-7: #e0c8b8; --int-9: #e0c8b8; --int-11: #e0c8b8; --int-13: #e0c8b8;
    }

    /* -- Dashboard: edge-to-edge dark frame -- */
    .dashboard {
      flex: 0 0 auto;
      display: flex;
      flex-direction: column;
      margin: 0 !important;
      padding: 0 var(--bento-pad) var(--bento-pad) !important;
      background: linear-gradient(to bottom, #0e0e14, #0a0a10) !important;
      border-radius: 0 !important;
      overflow: hidden !important;
      position: relative;
    }
    .dashboard::before { display: none; }

    /* Dash grid: flex column, gaps = bento grid */
    .dash-grid {
      display: flex !important;
      flex-direction: column;
      align-items: stretch;
      gap: var(--bento-gap);
      flex: 1;
      background: transparent;
    }

    /* Free-mode hides prog bar */
    body.free-mode .dashboard .prog-bar { display: none !important; }

    /* -- Prog bar: brown bento cells -- */
    .prog-bar {
      margin: 0 !important;
      border-radius: 0 !important;
      border: none !important;
      background: transparent !important;
      box-shadow: none !important;
      display: grid !important;
      grid-auto-columns: 1fr !important;
      grid-auto-flow: column !important;
      gap: var(--bento-gap) !important;
      align-items: stretch !important;
    }
    .prog-bar .prog-segment {
      background: #2a2218 !important;
      color: #c8b8a0 !important;
      opacity: 1 !important;
      border: none !important;
      border-right: none !important;
      border-radius: var(--bento-r) !important;
      display: flex !important;
      flex-direction: column !important;
      align-items: center !important;
      justify-content: center !important;
      min-height: var(--cell) !important;
      padding: 4px 2px !important;
      box-shadow: inset 0 0 0 1px rgba(138,101,60,0.2);
    }
    .prog-bar .prog-segment .numeral { color: #c8b8a0 !important; opacity: 1; font-size: 16px !important; font-weight: 700; }
    .prog-bar .prog-segment .chord-name { color: #8a7860 !important; opacity: 1; font-size: 10px !important; }
    .prog-bar .prog-segment.active {
      background: rgba(176,80,56,0.25) !important;
      box-shadow: inset 0 0 0 1.5px rgba(176,80,56,0.5), 0 0 10px rgba(176,80,56,0.12) !important;
      opacity: 1 !important;
    }
    .prog-bar .prog-segment.next {
      opacity: 0.7 !important;
    }
    .prog-bar .prog-segment.active .numeral { color: #e8d0c0 !important; opacity: 1; }
    .prog-bar .prog-segment.active .chord-name { color: #c07050 !important; opacity: 0.9; }

    /* Changes mode */
    .prog-bar.changes-wrap {
      display: flex !important;
      gap: var(--bento-gap) !important;
      padding: 0 !important;
      overflow-x: auto !important;
      overflow-y: hidden !important;
      flex-wrap: nowrap !important;
      mask-image: none !important;
      -webkit-mask-image: none !important;
      scrollbar-width: none;
    }
    .prog-bar.changes-wrap::-webkit-scrollbar { display: none; }
    .prog-bar.changes-wrap .prog-segment,
    .prog-bar .prog-add-btn {
      flex: 0 0 calc((100vw - 2 * var(--bento-pad) - 3 * var(--bento-gap)) / 4) !important;
      min-width: calc((100vw - 2 * var(--bento-pad) - 3 * var(--bento-gap)) / 4) !important;
      max-width: calc((100vw - 2 * var(--bento-pad) - 3 * var(--bento-gap)) / 4) !important;
      height: var(--cell) !important;
      min-height: var(--cell) !important;
      max-height: var(--cell) !important;
      padding: 8px !important;
      border-radius: var(--bento-r) !important;
    }
    .prog-bar.changes-wrap .prog-segment .chord-name { font-size: 11px; }
    .prog-bar .prog-add-btn {
      color: #686878 !important;
      background: transparent !important;
      border: 2px solid rgba(255,255,255,0.1) !important;
      opacity: 1 !important;
      font-size: 42px !important;
      font-weight: 200 !important;
      line-height: 1 !important;
    }
    .seg-edit-input { width: 100% !important; font-size: 16px !important; color: #cdd0c2 !important; box-sizing: border-box !important; }
    /* Editing segment: subtle outline focus */
    .prog-bar.changes-wrap .prog-segment.editing {
      border: 2px solid rgba(176,80,56,0.4) !important;
      background: #1e1a18 !important;
    }
    .seg-edit-input:focus, .seg-edit-input:focus-visible {
      outline: none !important;
    }

    /* -- Original anchor toggle: hidden on mobile -- */
    .anchor-switch { display: none !important; }
    #diatonicControls { display: none; }
    .dash-key { display: none !important; }

    /* -- Mode buttons: KEY / CHANGES -- */
    .mode-buttons {
      display: grid !important;
      grid-template-columns: 1fr 1fr;
      gap: var(--bento-gap);
    }
    .mode-btn {
      height: var(--cell);
      border-radius: var(--bento-r);
      border: none;
      font-family: inherit;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      -webkit-tap-highlight-color: transparent;
    }
    .mode-btn.active {
      background: rgba(176,80,56,0.28) !important;
      color: #e0c8b8;
      box-shadow: inset 0 0 0 1.5px rgba(176,80,56,0.4);
    }
    .mode-btn:not(.active) {
      background: #1e1e24 !important;
      color: #555;
    }

    /* -- Controls: 3-column bento grid -- */
    .dash-controls.dash-harmony {
      display: grid !important;
      grid-template-columns: repeat(3, 1fr) !important;
      gap: var(--bento-gap) !important;
      margin: 0 !important;
      padding: 0 !important;
      background: transparent !important;
      border-radius: 0 !important;
      overflow: visible !important;
      flex-shrink: 0;
    }

    /* All selects: bento cells */
    .dash-select {
      min-width: 0 !important;
      width: 100% !important;
      height: var(--cell) !important;
      min-height: var(--cell) !important;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.3px;
      text-transform: uppercase;
      padding: 0 18px 0 10px !important;
      border-radius: var(--bento-r) !important;
      border: none !important;
      background-color: #2a2218 !important;
      background-position: right 6px center !important;
      box-shadow: inset 0 0 0 1px rgba(138,101,60,0.25) !important;
      box-sizing: border-box;
      color: #c8b8a0 !important;
    }
    /* System/scale dropdown (first child): neutral */
    .dash-controls.dash-harmony .dash-select:first-child {
      background-color: #1e1e24 !important;
      color: #9898a8 !important;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08) !important;
    }
    .dash-select:hover, .dash-select:focus {
      border-color: transparent !important;
    }

    /* Hide controls moved to settings panel */
    #positionDropdown { display: none !important; }
    #tuningSelector { display: none !important; }
    #labelDropdown { display: none !important; }
    .dash-icon-group.tool-icons { display: none !important; }

    /* Changes mode: swap harmony row for track search */
    body.changes-active .dash-controls.dash-harmony {
      display: none !important;
    }
    #trackSearchBar {
      display: none;
      align-items: center;
      justify-content: center;
      height: var(--cell);
      border-radius: var(--bento-r);
      background: #1e1e24;
      color: #9898a8;
      font-family: inherit;
      font-size: 14px;
      font-weight: 600;
      letter-spacing: 0.3px;
      text-transform: uppercase;
      -webkit-tap-highlight-color: transparent;
    }
    body.changes-active #trackSearchBar {
      display: flex !important;
    }

    .dash-icon-group {
      border: none !important;
      overflow: hidden !important;
      border-radius: 0 !important;
    }
    .dash-icon-btn {
      height: var(--cell);
      min-width: 0;
      padding: 0;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    /* Hide elements moved elsewhere by JS */
    .dash-fretboard { display: none !important; }
    .dash-icons { display: none !important; }
    .dash-center { display: none !important; }

    /* ---- Mobile: flatten wrappers ---- */
    .dash-left { display: contents !important; }
    .desktop-only { display: none !important; }

    /* Reset button: fixed position */
    #resetBtn { position: fixed !important; top: 46px !important; right: 12px !important; }

    /* Hide desktop-only elements */
    .join { display: none !important; }
    #chordTableWrap { display: none; }
    #borrowedFretboardWrap { display: none !important; }

    /* Free mode extras */
    #freeExtras .dash-grid { margin-top: 4px !important; }
    #freeIntervalBar { margin-top: 4px !important; }
    .quality-row { height: 34px; border-radius: 3px; }
    .quality-chip { font-size: 11px; padding: 0 6px; }

    /* ---- Transport: merged into table ---- */
    #transportBar {
      position: static !important;
      background: transparent !important;
      border: none !important;
      padding: 0 !important;
      backdrop-filter: none !important;
      -webkit-backdrop-filter: none !important;
      z-index: auto !important;
      margin: 0 !important;
    }
    .transport-bar-inner {
      display: grid !important;
      grid-template-columns: repeat(3, 1fr) !important;
      gap: var(--bento-gap) !important;
      max-width: none !important;
      width: 100% !important;
    }
    /* BPM cell — dark recessed, first position */
    #transportBar .dash-bpm {
      height: var(--cell) !important;
      background: #161620 !important;
      border-radius: var(--bento-r) !important;
      display: flex !important;
      flex-direction: row !important;
      align-items: center !important;
      justify-content: center !important;
      gap: 6px !important;
      margin: 0 !important;
      padding: 0 8px !important;
      order: 0 !important;
      box-shadow: inset 0 1px 3px rgba(0,0,0,0.4), inset 0 0 0 1px rgba(255,255,255,0.06);
    }
    #transportBar .dash-bpm-val {
      font-size: 18px !important;
      font-weight: 700 !important;
      opacity: 1 !important;
      color: #c8c8d4 !important;
      letter-spacing: 0.03em;
    }
    #transportBar .dash-bpm-unit {
      font-size: 9px !important;
      opacity: 0.4 !important;
      text-transform: uppercase;
      color: #9898a8 !important;
    }
    #transportBar .bpm-slider { display: none !important; }
    /* Play button cell — warm accent, second position */
    #transportBar .transport-row {
      margin: 0 !important;
      padding: 0 !important;
      order: 1 !important;
    }
    #transportBar .transport-btn {
      width: 100% !important;
      height: var(--cell) !important;
      border-radius: var(--bento-r) !important;
      background: rgba(204,31,0,0.85) !important;
      color: #1a0800 !important;
      font-size: 16px !important;
      box-shadow: 0 0 12px rgba(204,31,0,0.2);
    }
    #transportBar .transport-btn.playing {
      background: rgba(204,31,0,0.7) !important;
      box-shadow: 0 0 16px rgba(204,31,0,0.25);
      opacity: 1;
    }
    /* Mixer button cell — neutral, third position */
    .mixer-wrap {
      order: 2 !important;
      display: flex !important;
    }
    .mixer-btn {
      width: 100% !important;
      height: var(--cell) !important;
      border-radius: var(--bento-r) !important;
      background: #1e1e24 !important;
      color: #9898a8 !important;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08);
    }
    .mixer-btn:hover, .mixer-btn.active {
      background: #2a2a32 !important;
      color: #c0c0cc !important;
    }
    /* Transport icons — hidden inside transport, shown in emoji-row */
    #transportBar .transport-icons { display: none !important; }

    /* -- Emoji row: 7-column grid below transport -- */
    .emoji-row {
      display: grid !important;
      grid-template-columns: repeat(5, 1fr) !important;
      gap: var(--bento-gap) !important;
    }
    .emoji-row .dash-icon-btn {
      height: var(--cell) !important;
      background: #1e1e24 !important;
      border-radius: var(--bento-r) !important;
      border: none !important;
      border-left: none !important;
      display: flex !important;
      align-items: center !important;
      justify-content: center !important;
      font-size: 16px !important;
      min-width: 0 !important;
      padding: 0 !important;
      cursor: pointer;
      opacity: 0.35 !important;
    }
    .emoji-row .dash-icon-btn.on {
      opacity: 0.9 !important;
      background: #2a2228 !important;
      box-shadow: inset 0 0 0 1px rgba(176,80,56,0.3);
    }

    /* Emoji row extends to panel edges */
    .dashboard { padding-bottom: max(var(--bento-pad), env(safe-area-inset-bottom)) !important; }

    /* -- Mixer panel: fixed overlay on mobile (higher specificity to beat base rules) -- */
    .mixer-wrap .mixer-panel {
      position: fixed;
      bottom: auto;
      top: 50%;
      left: 50%;
      right: auto;
      transform: translate(-50%, -50%);
      z-index: 300;
      max-height: 80vh;
      overflow-y: auto;
      width: calc(100vw - 40px);
      max-width: 320px;
    }
    .mixer-panel.open ~ .mixer-btn {
      z-index: 301 !important;
    }

    /* -- Settings section in mixer panel -- */
    .mixer-settings {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-bottom: 12px;
      padding-bottom: 10px;
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .mixer-settings select {
      width: 100%;
      height: 32px;
      font-family: inherit;
      font-size: 11px;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.5px;
      padding: 0 24px 0 8px;
      border-radius: 8px;
      border: none;
      background: rgba(255,255,255,0.06);
      color: var(--text-primary);
      -webkit-appearance: none;
      appearance: none;
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23555' fill='none' stroke-width='1.5'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-position: right 8px center;
    }
    .mixer-settings-row {
      display: flex;
      gap: 6px;
    }
    .mixer-settings-row select { flex: 1; }
    .mixer-settings-label {
      font-family: inherit;
      font-size: 7px;
      font-weight: 600;
      opacity: 0.25;
      text-transform: uppercase;
      letter-spacing: 1px;
      margin-bottom: 2px;
    }
    .mixer-tool-icons {
      display: flex;
      gap: 4px;
      justify-content: center;
      margin-top: 4px;
    }
    .mixer-tool-icons .dash-icon-btn {
      width: 32px;
      height: 32px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(255,255,255,0.04);
      border-radius: 8px;
      border: none;
      cursor: pointer;
      font-size: 13px;
      opacity: 0.4;
    }
    .mixer-tool-icons .dash-icon-btn.on { opacity: 1; background: rgba(255,255,255,0.08); }
  }

  /* --- SVG fretboard --- */
  svg.fretboard-svg { display: block; width: 100%; height: auto; }
  .fret-marker-dot { fill: #1E252B; }
  .fret-number { fill: var(--text-muted); font-size: 10px; text-anchor: middle; }
  .string-label { fill: var(--text-muted); font-size: 11px; font-weight: 600; cursor: pointer; }
  .string-label:hover { fill: var(--metallic); }

  .note-dot { cursor: default; }
  .note-dot .sh { stroke: rgba(255,255,255,0.1); stroke-width: 1; }
  .note-dot.int-R .sh  { fill: var(--int-R); stroke: var(--int-R); }
  .note-dot.int-R text  { fill: #fff; }
  .note-dot.int-3 .sh   { fill: var(--int-3); stroke: var(--int-3); }
  .note-dot.int-3 text   { fill: #1c1c22; }
  .note-dot.int-5 .sh   { fill: var(--int-5); stroke: var(--int-5); }
  .note-dot.int-7 .sh   { fill: var(--int-7); stroke: var(--int-7); }
  .note-dot.int-9 .sh   { fill: var(--int-9); stroke: var(--int-9); }
  .note-dot.int-9 text   { fill: #1c1c22; }
  .note-dot.int-11 .sh  { fill: var(--int-11); stroke: var(--int-11); }
  .note-dot.int-13 .sh  { fill: var(--int-13); stroke: var(--int-13); }
  /* Extensions outlined when shapes enabled: colored border, dark fill */
  .note-dot.int-9 .sh.ext  { fill: #1c1c22; stroke: var(--int-9); stroke-width: 2; }
  .note-dot.int-9:has(.ext) text { fill: #fff; }
  .note-dot.int-11 .sh.ext { fill: #1c1c22; stroke: var(--int-11); stroke-width: 2; }
  .note-dot.int-13 .sh.ext { fill: #1c1c22; stroke: var(--int-13); stroke-width: 2; }
  .note-dot.int-scale .sh { fill: rgba(255,255,255,0.03); stroke: rgba(255,255,255,0.04); }
  .note-dot.int-scale text   { fill: var(--int-scale-text); }
  .note-dot text {
    fill: #fff; font-size: 10px; font-weight: 700;
    text-anchor: middle; dominant-baseline: central; pointer-events: none;
  }

  /* --- Borrowed ghost fretboard --- */
  #borrowedFretboard .fret-marker-dot { fill: rgba(255,255,255,0.03); }
  #borrowedFretboard .fret-number { fill: rgba(255,255,255,0.12); }
  #borrowedFretboard .string-label { fill: rgba(255,255,255,0.12); }
  #borrowedFretboard line { stroke: rgba(255,255,255,0.06) !important; }
  #borrowedFretboard rect { fill: transparent !important; }
  #borrowedFretboard .note-dot .sh { fill: rgba(255,255,255,0.12) !important; stroke: rgba(255,255,255,0.08) !important; }
  #borrowedFretboard .note-dot text { fill: rgba(255,255,255,0.5) !important; }
  #borrowedFretboard .note-dot.int-scale { display: none; }
  #borrowedFretboard .current-group { opacity: var(--current-opacity, 1); }
  #borrowedFretboard .ghost-group { opacity: var(--ghost-opacity, 0); }
  #borrowedFretboard .note-dot.ghost .sh { fill: rgba(255,255,255,0.08) !important; stroke: rgba(255,255,255,0.12) !important; stroke-width: 1.5; }
  #borrowedFretboard .note-dot.ghost text { fill: rgba(255,255,255,0.35) !important; }

  /* --- Table cell colours --- */
  .quality-major { color: var(--major) !important; }
  .quality-minor { color: var(--minor) !important; }
  .quality-dim   { color: var(--dim) !important; }
  .quality-aug   { color: var(--aug) !important; }
  .nc-R  { color: var(--int-R) !important; }
  .nc-3  { color: var(--int-3) !important; }
  .nc-5  { color: var(--int-5) !important; }
  .nc-7  { color: var(--int-7) !important; }
  .nc-9  { color: var(--int-9) !important; }
  .nc-11 { color: var(--int-11) !important; }
  .nc-13 { color: var(--int-13) !important; }

  /* Table header style */
  .table th {
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 10px;
    font-weight: 500;
  }

  /* Clickable column header toggles */
  .col-toggle {
    cursor: pointer;
    user-select: none;
    transition: opacity 0.2s;
    white-space: nowrap;
  }
  .col-toggle:hover { opacity: 0.8 !important; }
  .col-inactive { opacity: 0.2; }
  .col-dim { opacity: 0.2 !important; }

  /* Chord label (next to play button) */
  .chord-hero {
    display: none;
  }
  .chord-hero-symbol {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.01em;
  }
  .chord-hero-detail {
    font-size: 10px;
    opacity: 0.65;
    margin-top: 1px;
    letter-spacing: 0.02em;
  }
  /* Transport section — hidden, content moves to transport bar via JS */
  .dash-center { display: none !important; }
  .transport-nav { display: none; }
  .transport-btn {
    --tb-r: 176; --tb-g: 80; --tb-b: 56;
    width: 62px;
    height: 62px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    border: none;
    background: linear-gradient(145deg, rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.3), rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.12));
    color: rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.9);
    transition: all 0.25s;
    box-shadow: 0 0 0 2.5px rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.4);
    flex-shrink: 0;
  }
  .transport-btn:hover {
    background: linear-gradient(145deg, rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.4), rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.18));
    box-shadow: 0 0 0 2.5px rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.55), 0 0 24px rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.08);
    transform: scale(1.04);
  }
  .transport-btn.playing {
    background: linear-gradient(135deg, rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.35), rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.12));
    box-shadow: 0 0 0 2px rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.5), 0 0 30px rgba(var(--tb-r),var(--tb-g),var(--tb-b),0.12);
    color: rgba(var(--tb-r),var(--tb-g),var(--tb-b),1);
  }

  /* === Desktop layout: bento HUD (matches mobile aesthetic) === */
  @media (min-width: 841px) {
    :root { --dk-cell: 36px; --dk-gap: 5px; --dk-r-btn: 6px; --dk-stroke: rgba(255,255,255,0.10); }

    /* Dashboard: fixed to bottom of viewport */
    .dashboard {
      background: linear-gradient(to bottom, #161620, #101018) !important;
      margin: 0 !important;
      padding: 8px 14px 10px !important;
      border-radius: 0 !important;
      border-top: 1px solid rgba(255,255,255,0.06) !important;
      position: fixed !important;
      bottom: 0;
      left: 0;
      right: 0;
      z-index: 100;
    }
    .dashboard::before { display: none; }

    /* Spacer so content isn't hidden behind fixed dashboard */
    #viewTool { padding-bottom: 140px; }

    /* Grid: horizontal rows via flex-wrap */
    .dash-grid {
      display: flex;
      flex-wrap: wrap;
      gap: var(--dk-gap);
      align-items: center;
    }

    /* Hide old anchor toggle — use mode buttons instead */
    .anchor-switch { display: none !important; }

    /* Dissolve wrappers so children flow as flex items */
    .dash-left { display: contents !important; }
    .dash-controls.dash-harmony { display: contents !important; }

    /* Hide empty shells (children already moved by JS) */
    .dash-fretboard { display: none !important; }
    .dash-icons { display: none !important; }
    .dash-center { display: none !important; }

    /* === ROW 1: mode + key + harmony controls === */
    .mode-buttons {
      order: 0;
      display: flex !important;
      gap: var(--dk-gap);
      flex: 0 0 auto;
      width: 200px;
    }
    .mode-btn {
      height: var(--dk-cell);
      border-radius: var(--dk-r-btn);
      border: 1px solid var(--dk-stroke);
      background: rgba(255,255,255,0.03);
      font-family: inherit;
      font-size: 11px;
      font-weight: 600;
      letter-spacing: 0.5px;
      text-transform: uppercase;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 0 16px;
      flex: 1;
      white-space: nowrap;
      color: #fff;
      -webkit-tap-highlight-color: transparent;
      transition: all 0.15s ease-out;
    }
    .mode-btn.active {
      background: rgba(176,80,56,0.18) !important;
      color: #e8d0c0;
      border-color: rgba(176,80,56,0.55);
      box-shadow: 0 0 12px rgba(176,80,56,0.12);
    }
    .mode-btn:not(.active) {
      background: rgba(255,255,255,0.03) !important;
      color: #686878;
    }
    .mode-btn:not(.active):hover {
      background: rgba(255,255,255,0.06) !important;
      color: #9898a8;
      border-color: rgba(255,255,255,0.18);
    }

    #diatonicControls { order: 0; flex: 1; }
    #freeControls { order: 0; flex: 1; }
    #trackSearchBar { order: 0; flex: 1; min-width: 120px; }

    /* Harmony dropdowns: order 0, stretch to fill (bento) */
    #systemDropdown { order: 0; flex: 1; }
    #progressionDropdown { order: 0; flex: 1; }
    #barsDropdown { order: 0; flex: 1; }
    #positionDropdown { order: 0; flex: 1; }
    #tuningSelector { order: 0; flex: 1; }
    #labelDropdown { order: 0; flex: 1; }
    .dash-icon-group.tool-icons { order: 0; flex: 1; }

    /* All selects: bento cells, fill parent width */
    .dash-select {
      height: var(--dk-cell) !important;
      min-width: 0 !important;
      width: 100% !important;
      font-size: 11px !important;
      font-weight: 600;
      letter-spacing: 0.3px;
      text-transform: uppercase;
      padding: 0 22px 0 8px !important;
      border-radius: var(--dk-r-btn) !important;
      border: 1px solid var(--dk-stroke) !important;
      background-color: rgba(255,255,255,0.03) !important;
      background-position: right 6px center !important;
      box-shadow: inset 0 1px 2px rgba(0,0,0,0.25) !important;
      color: #9898a8 !important;
      cursor: pointer;
      -webkit-appearance: none;
      appearance: none;
      transition: all 0.15s ease-out;
    }
    .dash-select:hover, .dash-select:focus {
      background-color: rgba(255,255,255,0.06) !important;
      border-color: rgba(255,255,255,0.18) !important;
      color: #c0c0cc !important;
    }

    /* Key dropdown: primary tier — warm accent */
    .dash-key {
      height: var(--dk-cell) !important;
      padding: 0 22px 0 10px !important;
      border-radius: var(--dk-r-btn) !important;
      font-size: 12px !important;
      font-weight: 700 !important;
      background: rgba(176,80,56,0.15) !important;
      color: #e0c8b8 !important;
      box-shadow: 0 0 10px rgba(176,80,56,0.1) !important;
      border: 1px solid rgba(176,80,56,0.45) !important;
      transition: all 0.15s ease-out;
    }
    .dash-key:hover {
      background: rgba(176,80,56,0.25) !important;
      border-color: rgba(176,80,56,0.65) !important;
      box-shadow: 0 0 14px rgba(176,80,56,0.18) !important;
    }

    /* Tool icons: stretch to fill (bento) */
    .dash-icon-group.tool-icons {
      display: flex !important;
      gap: var(--dk-gap);
      border: none !important;
      overflow: visible !important;
      flex: 1;
    }
    .dash-icon-btn {
      height: var(--dk-cell);
      width: var(--dk-cell);
      min-width: var(--dk-cell);
      padding: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      background: rgba(255,255,255,0.02);
      border-radius: var(--dk-r-btn);
      border: 1px solid var(--dk-stroke) !important;
      border-left: 1px solid var(--dk-stroke) !important;
      cursor: pointer;
      opacity: 0.4;
      font-size: 14px;
      color: #fff;
      transition: all 0.15s ease-out;
    }
    .dash-icon-btn:hover {
      opacity: 0.7;
      background: rgba(255,255,255,0.05);
      border-color: rgba(255,255,255,0.18) !important;
    }
    .dash-icon-btn.on {
      opacity: 0.9;
      border-color: rgba(176,80,56,0.5) !important;
      background: rgba(176,80,56,0.1);
      color: #e8d0c0;
      box-shadow: 0 0 6px rgba(176,80,56,0.1);
    }

    /* === ROW 2: progression bar (full width) === */
    .prog-bar {
      order: 1;
      flex: 0 0 100%;
      background: transparent !important;
      border: none !important;
      box-shadow: none !important;
      display: flex !important;
      gap: var(--dk-gap) !important;
      border-radius: 0 !important;
      padding: 3px 0 !important;
    }
    .prog-bar .prog-segment {
      background: rgba(255,255,255,0.03) !important;
      color: #fff !important;
      border: 1px solid var(--dk-stroke) !important;
      border-right: 1px solid var(--dk-stroke) !important;
      border-radius: var(--dk-r-btn) !important;
      opacity: 1 !important;
      height: var(--dk-cell) !important;
      min-height: var(--dk-cell) !important;
      display: flex !important;
      flex-direction: column !important;
      align-items: center !important;
      justify-content: center !important;
      padding: 0 8px !important;
      gap: 0 !important;
      line-height: 1.1 !important;
      transition: all 0.15s ease-out;
    }
    .prog-bar .prog-segment .numeral { color: #c8c8d4 !important; font-size: 13px !important; font-weight: 700; }
    .prog-bar .prog-segment .chord-name { color: #686878 !important; opacity: 1; font-size: 10px !important; }
    .prog-bar .prog-segment.active {
      border-color: rgba(176,80,56,0.6) !important;
      background: rgba(176,80,56,0.15) !important;
      box-shadow: 0 0 12px rgba(176,80,56,0.12) !important;
    }
    .prog-bar .prog-segment.active .numeral { color: #e8d0c0 !important; opacity: 1 !important; }
    .prog-bar .prog-segment.active .chord-name { color: #c07050 !important; opacity: 0.9 !important; }
    .prog-bar .prog-segment:not(.active):not(.next) {
      opacity: 0.4 !important;
    }
    .prog-bar .prog-segment.next {
      opacity: 0.65 !important;
    }
    .prog-bar .prog-segment:hover:not(.active) {
      opacity: 0.8 !important;
      border-color: rgba(255,255,255,0.18) !important;
      background: rgba(255,255,255,0.05) !important;
    }

    /* === ROW 3: transport bar (full width) === */
    #transportBar {
      order: 2;
      flex: 0 0 100%;
      position: static !important;
      background: transparent !important;
      border: none !important;
      padding: 0 !important;
      backdrop-filter: none !important;
      -webkit-backdrop-filter: none !important;
      z-index: auto !important;
    }
    .transport-bar-inner {
      max-width: none !important;
      gap: var(--dk-gap) !important;
      justify-content: stretch !important;
      width: 100% !important;
    }
    /* Row 3: BPM, beat dots, and play stretch to fill */
    .transport-bar-inner > * {
      flex: 0 0 auto;
    }
    .transport-bar-inner .prog-beats {
      flex: 1;
    }
    .transport-bar-inner .transport-row {
      flex: 1;
    }
    .transport-bar-inner .dash-bpm {
      flex: 1;
    }

    /* BPM cell — LCD readout style */
    #transportBar .dash-bpm {
      height: var(--dk-cell) !important;
      background: rgba(0,0,0,0.35) !important;
      border: 1px solid var(--dk-stroke) !important;
      border-radius: var(--dk-r-btn) !important;
      display: flex !important;
      align-items: center !important;
      justify-content: center !important;
      gap: 5px !important;
      padding: 0 10px !important;
      margin: 0 !important;
      box-shadow: inset 0 1px 3px rgba(0,0,0,0.4) !important;
    }
    #transportBar .dash-bpm-val { font-size: 14px !important; font-weight: 700 !important; opacity: 1 !important; color: #c8c8d4 !important; width: auto !important; letter-spacing: 0.05em; }
    #transportBar .dash-bpm-unit { font-size: 8px !important; opacity: 0.4 !important; color: #9898a8 !important; text-transform: uppercase; }
    #transportBar .bpm-slider { display: none !important; }

    /* Play button: warm accent, primary tier */
    #transportBar .transport-row { margin: 0 !important; padding: 0 !important; display: flex !important; }
    #transportBar .transport-btn {
      width: 100% !important;
      height: var(--dk-cell) !important;
      border-radius: var(--dk-r-btn) !important;
      background: rgba(176,80,56,0.12) !important;
      color: #c07050 !important;
      box-shadow: 0 0 6px rgba(176,80,56,0.08) !important;
      border: 1px solid rgba(176,80,56,0.4) !important;
      font-size: 12px !important;
      transition: all 0.15s ease-out;
    }
    #transportBar .transport-btn:hover {
      background: rgba(176,80,56,0.22) !important;
      border-color: rgba(176,80,56,0.6) !important;
      box-shadow: 0 0 14px rgba(176,80,56,0.18) !important;
    }
    #transportBar .transport-btn.playing {
      background: rgba(204,31,0,0.15) !important;
      border-color: #cc1f00 !important;
      color: #cc1f00 !important;
      box-shadow: 0 0 12px rgba(204,31,0,0.2) !important;
    }

    /* Transport icons: bento cells */
    #transportBar .transport-icons {
      display: flex !important;
      gap: var(--dk-gap) !important;
      background: transparent !important;
      padding: 0 !important;
      border-radius: 0 !important;
    }
    #transportBar .transport-icons .dash-icon-btn {
      height: var(--dk-cell) !important;
      width: var(--dk-cell) !important;
      min-width: var(--dk-cell) !important;
      padding: 0 !important;
      background: rgba(255,255,255,0.02) !important;
      border: 1px solid var(--dk-stroke) !important;
      border-radius: var(--dk-r-btn) !important;
      font-size: 14px !important;
      color: #fff !important;
    }

    /* Mixer button: bento cell */
    .mixer-wrap { order: unset !important; }
    .mixer-btn {
      width: auto !important;
      height: var(--dk-cell) !important;
      border-radius: var(--dk-r-btn) !important;
      background: rgba(255,255,255,0.03) !important;
      border: 1px solid var(--dk-stroke) !important;
      color: #9898a8 !important;
      padding: 0 12px !important;
      transition: all 0.15s ease-out;
    }
    .mixer-btn:hover {
      background: rgba(255,255,255,0.06) !important;
      border-color: rgba(255,255,255,0.18) !important;
      color: #c0c0cc !important;
    }

    /* Track search bar (changes mode) */
    #trackSearchBar {
      height: var(--dk-cell) !important;
      border-radius: var(--dk-r-btn) !important;
      font-size: 12px !important;
      background: transparent !important;
      border: 1px solid var(--dk-stroke, #686878) !important;
      color: #fff !important;
    }

    /* Changes mode: hide harmony elements, show track search */
    body.changes-active #systemDropdown,
    body.changes-active #progressionDropdown,
    body.changes-active #barsDropdown,
    body.changes-active #positionDropdown,
    body.changes-active #tuningSelector,
    body.changes-active #labelDropdown,
    body.changes-active .tool-icons,
    body.changes-active #diatonicControls {
      display: none !important;
    }
    body.changes-active #trackSearchBar {
      display: flex !important;
    }

    /* Interval chips: bento cells inside transport row */
    #intChips {
      display: flex !important;
      gap: var(--dk-gap) !important;
      border: none !important;
      background: transparent !important;
      padding: 0 !important;
      height: auto !important;
    }
    #intChips .int-chip {
      height: var(--dk-cell) !important;
      width: var(--dk-cell) !important;
      min-width: var(--dk-cell) !important;
      padding: 0 !important;
      margin: 0;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: var(--dk-r-btn);
      font-size: 12px !important;
      font-weight: 700;
      background: rgba(255,255,255,0.02);
      opacity: 0.45;
      border: 1px solid var(--dk-stroke);
      transition: all 0.15s ease-out;
    }
    #intChips .int-chip:hover { opacity: 0.7; background: rgba(255,255,255,0.05); }
    #intChips .int-chip.on {
      opacity: 1;
      background: rgba(255,255,255,0.06);
      border-color: currentColor;
      box-shadow: 0 0 8px rgba(255,255,255,0.06);
    }
    #intChips .int-chip.disabled { opacity: 0.15 !important; }

    /* Beat display: inline in transport row */
    .prog-beats {
      display: flex !important;
      gap: 3px;
      margin: 0 !important;
      padding: 0 !important;
      justify-content: center;
    }

    /* Free mode extras */
    #freeExtras { margin-top: 4px; }
  }

  /* === Sliders === */
  input[type=range] { -webkit-appearance: none; appearance: none; height: 3px; background: rgba(255,255,255,0.08); border-radius: 2px; outline: none; }
  input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 14px; height: 14px; border-radius: 50%; background: var(--int-R); cursor: pointer; box-shadow: 0 0 8px color-mix(in srgb, var(--int-R) 25%, transparent); }
  .vol-fill.disabled::-webkit-slider-thumb { background: rgba(255,255,255,0.2); }

  /* === Practice: Progression bar === */
  .prog-bar {
    display: flex;
    align-items: stretch;
    background: rgba(0,0,0,0.45);
    border-radius: 3px;
    border: 1px solid rgba(255,255,255,0.04);
    box-shadow: inset 0 1px 4px rgba(0,0,0,0.5), 0 1px 0 rgba(255,255,255,0.02);
    overflow: hidden;
  }
  .prog-bar.changes-wrap {
    flex-wrap: nowrap;
    gap: 6px;
    background: transparent;
    border: none;
    box-shadow: none;
    overflow-x: auto;
    overflow-y: hidden;
    max-width: 100%;
    scrollbar-width: none;
    padding: 6px 32px;
    mask-image: linear-gradient(to right, transparent, black 32px, black calc(100% - 32px), transparent);
    -webkit-mask-image: linear-gradient(to right, transparent, black 32px, black calc(100% - 32px), transparent);
    scroll-snap-type: x proximity;
    scroll-behavior: smooth;
  }
  .prog-bar.changes-wrap::-webkit-scrollbar { display: none; }
  /* Disable fade at scroll edges */
  .prog-bar.changes-wrap.at-start {
    mask-image: linear-gradient(to right, black, black calc(100% - 32px), transparent);
    -webkit-mask-image: linear-gradient(to right, black, black calc(100% - 32px), transparent);
  }
  .prog-bar.changes-wrap.at-end {
    mask-image: linear-gradient(to right, transparent, black 32px, black);
    -webkit-mask-image: linear-gradient(to right, transparent, black 32px, black);
  }
  .prog-bar.changes-wrap.at-start.at-end {
    mask-image: none;
    -webkit-mask-image: none;
  }
  .prog-bar.changes-wrap .prog-segment {
    flex: 0 0 auto;
    min-width: 56px;
    background: rgba(0,0,0,0.35);
    border-radius: 3px;
    border: 1px solid rgba(255,255,255,0.04);
    text-align: center;
    padding: 8px 14px;
    grid-template-columns: 1fr;
    justify-items: center;
    scroll-snap-align: start;
    white-space: nowrap;
  }
  @media (min-width: 841px) {
    .prog-bar.changes-wrap {
      overflow: visible !important;
      padding: 0 !important;
      mask-image: none !important;
      -webkit-mask-image: none !important;
      gap: var(--dk-gap, 5px) !important;
    }
    .prog-bar.changes-wrap .prog-segment {
      flex: 1 !important;
      min-width: 0 !important;
      background: transparent !important;
      color: #fff !important;
      border: 1px solid var(--dk-stroke, #686878) !important;
      border-radius: var(--dk-r-btn, 10px) !important;
      height: var(--dk-cell, 38px) !important;
      min-height: var(--dk-cell, 38px) !important;
      padding: 0 8px !important;
      display: flex !important;
      align-items: center !important;
      justify-content: center !important;
    }
    .prog-bar.changes-wrap .prog-segment .chord-name {
      color: #fff !important;
      font-size: 14px !important;
      font-weight: 700 !important;
      opacity: 1 !important;
    }
    .prog-bar.changes-wrap .prog-segment.active {
      border-color: #fff !important;
      background: rgba(255,255,255,0.06) !important;
    }
    .prog-add-btn {
      width: var(--dk-cell) !important;
      height: var(--dk-cell) !important;
      border: 1px solid var(--dk-stroke, #686878) !important;
      border-radius: var(--dk-r-btn) !important;
      background: transparent !important;
      color: #fff !important;
      font-size: 20px !important;
      font-weight: 300 !important;
      flex: 0 0 auto !important;
    }
  }
  .prog-bar.changes-wrap .prog-segment .chord-name { text-align: center; }
  .prog-bar.changes-wrap .prog-segment.active {
    border-color: rgba(var(--tb-r, 224),var(--tb-g, 160),var(--tb-b, 56),0.3);
  }
  .prog-bar.changes-wrap .prog-segment .seg-delete {
    display: none;
    position: absolute;
    bottom: 4px;
    right: 6px;
    width: 20px;
    height: 20px;
    border-radius: 6px;
    background: rgba(180,40,40,0.9);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    line-height: 20px;
    text-align: center;
    cursor: pointer;
    z-index: 2;
  }
  .prog-bar.changes-wrap .prog-segment.active .seg-delete { display: block; }
  .prog-bar.changes-wrap .prog-segment { position: relative; }
  .prog-bar.changes-wrap .prog-segment.editing {
    opacity: 1;
    border-color: rgba(255,255,255,0.25);
    overflow: visible;
  }
  /* Editing mode: keep scroll intact, suggestions use portal pattern on all viewports */
  .prog-bar.changes-wrap.editing-mode {
    mask-image: none;
    -webkit-mask-image: none;
  }
  .seg-edit-input {
    width: 5em;
    background: transparent;
    border: none;
    color: inherit;
    font-family: inherit;
    font-size: 16px;
    font-weight: 700;
    text-align: center;
    outline: none;
    padding: 0;
    letter-spacing: 0.5px;
  }
  .seg-edit-input::placeholder { opacity: 0.3; }
  .seg-suggestions {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 6px;
    background: rgba(30,37,43,0.97);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 10px;
    padding: 8px;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    z-index: 10;
    min-width: 180px;
    max-width: 320px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.6);
  }
  /* Portal: suggestions fixed to viewport, escaping scroll overflow */
  .seg-suggestions.sug-portal {
    position: fixed;
    bottom: auto;
    transform: none;
    z-index: 1000;
    margin-bottom: 0;
  }
  .seg-suggestion {
    padding: 8px 12px;
    border-radius: 8px;
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    opacity: 0.7;
    transition: all 0.1s;
    -webkit-tap-highlight-color: transparent;
  }
  .seg-suggestion:hover, .seg-suggestion.highlighted { background: rgba(255,255,255,0.1); opacity: 1; }
  .prog-add-btn {
    flex: 0 0 auto;
    width: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 2px solid var(--dk-stroke, #686878);
    border-radius: 3px;
    cursor: pointer;
    opacity: 1;
    font-size: 24px;
    font-weight: 200;
    line-height: 1;
    color: #cdd0c2;
    transition: opacity 0.15s;
    user-select: none;
  }
  .prog-add-btn:hover { opacity: 0.7; }
  .beat-count { font-size: 10px; opacity: 0.3; font-variant-numeric: tabular-nums; }
  .prog-segment {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 10px 16px;
    cursor: pointer;
    user-select: none;
    transition: all 0.15s;
    opacity: 0.22;
    border-right: 1px solid rgba(255,255,255,0.04);
  }
  .prog-segment:last-child { border-right: none; }
  .prog-segment.active {
    opacity: 1;
    background: rgba(var(--tb-r, 224),var(--tb-g, 160),var(--tb-b, 56),0.04);
  }
  .prog-segment.next { opacity: 0.4; }
  .prog-segment .numeral { font-size: 18px; font-weight: 700; text-align: center; }
  .prog-segment .chord-name { font-size: 18px; font-weight: 700; opacity: 0.7; text-align: left; }
  .prog-segment .mode-name { display: none; }

  /* === Practice: Beat dots === */
  .prog-beats { display: flex; gap: 8px; align-items: center; justify-content: center; }
  .beat-dot {
    width: 12px; height: 12px; border-radius: 50%;
    background: rgba(255,255,255,0.07);
    box-shadow: 0 0 4px rgba(0,0,0,0.3);
    transition: background 0.08s, box-shadow 0.08s;
  }
  .beat-dot.on {
    background: var(--int-R);
    box-shadow: 0 0 8px color-mix(in srgb, var(--int-R) 50%, transparent);
    animation: beat-pulse 0.25s ease-out;
  }
  .beat-dot.on-dim { background: color-mix(in srgb, var(--int-R) 40%, transparent); box-shadow: 0 0 4px color-mix(in srgb, var(--int-R) 20%, transparent); }
  @keyframes beat-pulse { 0% { transform: scale(1.5); opacity: 0.5; } 100% { transform: scale(1); opacity: 1; } }
  .beat-gap { width: 10px; }

  /* === Practice: BPM & Volume === */
  .dash-bpm { display: flex; align-items: center; gap: 8px; }
  .dash-bpm-val {
    font-size: 30px; font-weight: 700; opacity: 0.7;
    width: 44px; text-align: center; font-variant-numeric: tabular-nums; letter-spacing: -0.5px;
  }
  .dash-bpm-unit { font-size: 9px; text-transform: uppercase; letter-spacing: 1.5px; opacity: 0.2; }
  .bpm-slider {
    background: repeating-linear-gradient(90deg, rgba(255,255,255,0.18) 0px, rgba(255,255,255,0.18) 1px, transparent 1px, transparent 4.5px) !important;
    height: 2px !important; border-radius: 0 !important;
  }
  .bpm-slider::-webkit-slider-thumb {
    width: 10px !important; height: 10px !important; border-radius: 0 !important;
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%) !important; box-shadow: none !important;
  }
  .vol-fill {
    -webkit-appearance: none; appearance: none;
    height: 6px; border-radius: 3px; outline: none; width: 52px; transition: opacity 0.15s;
  }
  .vol-fill::-webkit-slider-thumb {
    -webkit-appearance: none; width: 2px; height: 12px;
    background: var(--int-R); border-radius: 1px; cursor: pointer; box-shadow: none;
  }
  .vol-fill.disabled { opacity: 0.2; pointer-events: none; }
  .dash-icon-btn.disabled { opacity: 0.2; pointer-events: none; }

  /* === Practice: Ghost note groups === */
  .current-group { opacity: var(--current-opacity, 1); }
  .ghost-group { opacity: var(--ghost-opacity, 0); }
  .note-dot.ghost .sh { fill-opacity: var(--ghost-fill, 0); stroke-width: 1.5; }
  .note-dot.ghost.int-R .sh  { stroke: var(--int-R); }
  .note-dot.ghost.int-3 .sh  { stroke: var(--int-3); }
  .note-dot.ghost.int-5 .sh  { stroke: var(--int-5); }
  .note-dot.ghost.int-7 .sh  { stroke: var(--int-7); }
  .note-dot.ghost.int-9 .sh  { stroke: var(--int-9); }
  .note-dot.ghost.int-11 .sh { stroke: var(--int-11); }
  .note-dot.ghost.int-13 .sh { stroke: var(--int-13); }
  .note-dot.ghost text { fill-opacity: var(--ghost-fill, 0); font-weight: 500; }

  /* === Practice: Mobile overrides === */
  @media (max-width: 840px) {
    .prog-bar { overflow-x: auto; scrollbar-width: none; flex-shrink: 0; width: 100%; }
    .prog-bar::-webkit-scrollbar { display: none; }
    .prog-segment { padding: 6px 4px; min-width: 0; grid-template-columns: 1fr; grid-template-rows: auto auto auto; justify-items: center; text-align: center; gap: 1px; }
    .prog-segment .chord-name { font-size: 12px; font-weight: 600; opacity: 0.6; text-align: center; order: 2; }
    .prog-segment .numeral { font-size: 14px; text-align: center; order: 1; }
    .prog-segment .mode-name { display: none; }
    .prog-segment.active { min-width: 60px; }
  }

  /* === Transport Bar (all sizes) === */
  #transportBar {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 200;
    background: var(--bg-surface, #121212);
    border-top: 1px solid rgba(255,255,255,0.06);
    padding: 14px 24px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    justify-content: center;
  }
  .transport-bar-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    max-width: 600px;
    width: 100%;
  }
  /* Play button in transport bar */
  #transportBar .transport-row { margin: 0; padding: 0; }
  #transportBar .transport-btn { width: 42px; height: 42px; font-size: 16px; }
  /* BPM in transport bar */
  #transportBar .dash-bpm {
    flex-direction: row !important;
    align-items: center;
    gap: 8px !important;
    margin: 0;
    padding: 0;
  }
  #transportBar .dash-bpm-val { font-size: 22px; width: auto; opacity: 0.7; }
  #transportBar .dash-bpm-unit { font-size: 8px; }
  #transportBar .bpm-slider { width: 80px !important; }
  /* Transport icons as pill */
  #transportBar .transport-icons {
    display: flex;
    flex-wrap: nowrap;
    background: rgba(255,255,255,0.06);
    border-radius: 3px;
    padding: 2px 10px;
    gap: 0;
  }
  #transportBar .transport-icons .dash-icon-btn {
    height: 36px; min-width: 32px; padding: 0 6px; font-size: 13px;
    background: transparent !important; border-left: none !important;
  }
  /* Mixer popup */
  .mixer-wrap { position: relative; order: 3; }
  .mixer-btn {
    width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
    background: rgba(255,255,255,0.06); border: none; border-radius: 50%;
    color: rgba(255,255,255,0.5); cursor: pointer;
    transition: background var(--transition-fast, 150ms ease);
  }
  .mixer-btn:hover, .mixer-btn.active { background: rgba(255,255,255,0.12); color: rgba(255,255,255,0.8); }
  .mixer-panel {
    display: none; position: absolute; bottom: 48px; right: -8px;
    background: var(--bg-elevated);
    border: 1px solid rgba(138,101,60,0.12); border-radius: 14px;
    padding: 14px 12px 10px;
    box-shadow: 0 -4px 24px rgba(0,0,0,0.5);
    z-index: 210;
  }
  .mixer-panel.open { display: block; }
  .mixer-channels { display: flex; gap: 14px; justify-content: center; }
  .mixer-ch { display: flex; flex-direction: column; align-items: center; gap: 6px; width: 36px; }
  .mixer-ch-label {
    font-family: inherit; font-size: 8px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 1px; opacity: 0.4;
  }
  .mixer-ch input[type=range] {
    writing-mode: vertical-lr; direction: rtl;
    width: 4px; height: 80px;
    -webkit-appearance: none; appearance: none;
    background: rgba(255,255,255,0.08); border-radius: 2px; outline: none;
  }
  .mixer-ch input[type=range]::-webkit-slider-thumb {
    -webkit-appearance: none; width: 16px; height: 8px; border-radius: 2px;
    cursor: pointer; box-shadow: 0 0 6px rgba(255,255,255,0.1);
  }
  .mixer-ch.ch-pad input::-webkit-slider-thumb { background: var(--int-R); }
  .mixer-ch.ch-drum input::-webkit-slider-thumb { background: var(--int-3); }
  .mixer-ch.ch-click input::-webkit-slider-thumb { background: var(--int-5); }
  .mixer-ch-icon { font-size: 14px; line-height: 1; opacity: 0.6; }
  .mixer-ch-db {
    font-family: inherit; font-size: 8px; opacity: 0.25;
    font-variant-numeric: tabular-nums; min-width: 28px; text-align: center;
  }
  /* Click type selector */
  .mixer-type-row {
    display: flex; gap: 4px; margin-top: 10px; padding-top: 8px;
    border-top: 1px solid rgba(255,255,255,0.06); justify-content: center;
  }
  .mixer-type-btn {
    font-family: inherit; font-size: 8px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.5px;
    padding: 4px 8px; border-radius: 10px; border: none; cursor: pointer;
    background: rgba(255,255,255,0.04); color: rgba(255,255,255,0.35);
    transition: all var(--transition-fast, 150ms ease);
  }
  .mixer-type-btn.active { background: rgba(255,255,255,0.1); color: rgba(255,255,255,0.8); }
  .mixer-type-btn:hover { background: rgba(255,255,255,0.08); }
  /* Mute buttons */
  .mixer-mute {
    width: 20px; height: 20px; border-radius: 50%; border: none; cursor: pointer;
    font-size: 10px; line-height: 1; padding: 0;
    background: rgba(255,255,255,0.04); color: rgba(255,255,255,0.15);
    transition: all var(--transition-fast, 150ms ease);
  }
  .mixer-mute.on { background: rgba(255,255,255,0.08); }
  .ch-pad .mixer-mute.on { color: var(--int-R); }
  .ch-drum .mixer-mute.on { color: var(--int-3); }
  .ch-click .mixer-mute.on { color: var(--int-5); }
  /* Dashboard clearance for transport bar (desktop only) */
  #viewTool { padding-bottom: 72px; }
  @media (max-width: 840px) { #viewTool { padding-bottom: 0 !important; } }

  /* === Transport Bar: mobile overrides === */
  @media (max-width: 840px) {
    #transportBar { padding: 0 !important; }
  }

  /* === Focus & Hover States === */
  :focus-visible { outline: 2px solid var(--int-R); outline-offset: 2px; }
  :focus:not(:focus-visible) { outline: none; }
  .prog-segment { cursor: pointer; transition: background var(--transition-fast, 150ms ease); }
  .prog-segment:hover { background: rgba(255,255,255,0.04); }
  .dash-bpm-val { transition: opacity var(--transition-fast, 150ms ease); }
  .dash-bpm-val:hover { opacity: 0.9 !important; }
  .dash-icon-btn { transition: opacity var(--transition-fast, 150ms ease), background var(--transition-fast, 150ms ease); }
  .int-chip { transition: opacity var(--transition-fast, 150ms ease); }
  #resetBtn:hover { opacity: 0.7 !important; }

  /* === Reduced motion === */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
    }
  }

  /* === Performance mode (fullscreen landscape) === */
  .perf-enter {
    display: none;
    position: absolute;
    bottom: 8px;
    right: 10px;
    z-index: 10;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1.5px solid rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.5);
    color: rgba(255,255,255,0.4);
    font-size: 16px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
  }
  @media (max-width: 840px) {
    .perf-enter {
      display: flex;
      position: fixed;
      top: 82px;
      right: 12px;
      z-index: 50;
    }
  }

  body.performance-mode {
    overflow: hidden !important;
    position: fixed;
    inset: 0;
  }
  body.performance-mode > *:not(#viewTool):not(#perfExit):not(#perfRotate) { display: none !important; }
  body.performance-mode #viewTool { flex: 1; display: flex; flex-direction: column; }
  body.performance-mode #fretboardInfo { display: none !important; }
  body.performance-mode #reverseLookup { display: none !important; }
  body.performance-mode #borrowedFretboardWrap { display: none !important; }
  body.performance-mode #chordTableWrap { display: none !important; }
  body.performance-mode .dashboard { display: none !important; }
  body.performance-mode #transportBar { display: none !important; }
  body.performance-mode .perf-enter { display: none !important; }
  body.performance-mode #fretboardWrap {
    flex: 1;
    padding: 4px env(safe-area-inset-right, 8px) 4px env(safe-area-inset-left, 8px);
    align-items: center;
    justify-content: center;
    overflow: hidden;
  }
  body.performance-mode #fretboardWrap > div { min-width: 0 !important; width: 100%; height: 100%; }
  body.performance-mode #fretboardWrap svg { width: 100%; height: auto; max-height: 100%; }
  body.performance-mode #resetBtn { display: none; }

  /* Performance: show compact bar with beats + intervals + progression */
  body.performance-mode #perfBar { display: flex !important; }
  #perfBar {
    display: none;
    flex-shrink: 0;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    background: rgba(0,0,0,0.3);
    border-top: 1px solid rgba(255,255,255,0.04);
    overflow: hidden;
  }
  #perfBar .prog-bar { flex: 1; min-width: 0; height: 32px; }
  #perfBar .prog-bar .prog-segment { height: 32px !important; min-height: 32px !important; max-height: 32px !important; border-radius: 8px !important; font-size: 12px !important; padding: 4px !important; }
  #perfBar .prog-bar .prog-segment .numeral { font-size: 13px !important; }
  #perfBar .prog-bar .prog-segment .chord-name { font-size: 9px !important; }
  #perfBar .int-chips { flex-shrink: 0; height: auto; gap: 2px; }
  #perfBar .int-chip { padding: 0 5px; font-size: 10px; height: 28px; }
  #perfBar .prog-beats { flex-shrink: 0; gap: 3px; margin: 0; padding: 0; }
  #perfBar .perf-play {
    width: 34px;
    height: 34px;
    font-size: 13px;
    flex-shrink: 0;
  }

  #perfExit {
    display: none;
    position: fixed;
    top: 8px;
    right: 8px;
    z-index: 10000;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.5);
    color: rgba(255,255,255,0.5);
    font-size: 16px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
  }
  body.performance-mode #perfExit { display: flex; }

  /* Performance mode: rotate prompt for portrait mobile */
  #perfRotate {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,0.92);
    color: rgba(255,255,255,0.6);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 15px;
    letter-spacing: 0.5px;
  }
  #perfRotate svg { opacity: 0.4; }
  @media (orientation: portrait) {
    body.performance-mode #perfRotate { display: flex; }
    body.performance-mode #viewTool { visibility: hidden; }
  }
  @media (orientation: landscape) {
    body.performance-mode #perfRotate { display: none; }
    body.performance-mode #viewTool { visibility: visible; }
  }

  /* Landscape optimization for performance mode */
  @media (orientation: landscape) and (max-height: 500px) {
    body.performance-mode #fretboardWrap { padding: 2px 8px; }
    #perfBar { padding: 2px 8px; position: fixed; bottom: 0; left: 0; right: 0; z-index: 100; }
    body.performance-mode #viewTool { padding-bottom: 36px; }
  }