/* --- Utility classes for dynamic content --- */
  .flex-row { display: flex; gap: 8px; align-items: center; }
  .flex-row-wrap { display: flex; gap: 4px; flex-wrap: wrap; }
  .flex-col { display: flex; flex-direction: column; gap: 4px; }
  .flex-between { display: flex; justify-content: space-between; align-items: center; }
  .gap-sm { gap: 2px; }
  .gap-md { gap: 6px; }
  .gap-lg { gap: 12px; }
  .mb-sm { margin-bottom: 4px; }
  .mb-md { margin-bottom: 8px; }
  .mb-lg { margin-bottom: 12px; }
  .mt-sm { margin-top: 4px; }
  .mt-md { margin-top: 8px; }
  .text-xs { font-size: 10px; }
  .text-sm { font-size: 11px; }
  .text-md { font-size: 12px; }
  .text-base { font-size: 13px; }
  .text-muted { color: var(--text-muted); }
  .text-accent { color: var(--accent); }
  .text-green { color: var(--c64-string); }
  .text-red { color: var(--c64-control); }
  .text-yellow { color: var(--c64-highlight); }
  .text-center { text-align: center; }
  .font-bold { font-weight: bold; }
  .font-mono { font-family: monospace; }
  .font-c64 { font-family: 'C64 Pro Mono', monospace; }
  .user-select { user-select: text; -webkit-user-select: text; }
  .code-tag { background: var(--hover); padding: 2px 6px; border-radius: 3px; }
  .line-tall { line-height: 1.8; }
  .link { color: var(--accent); }

  .modal-info-card {
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 10px;
    margin-bottom: 8px;
  }

  .color-picker-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-top: 8px; }
  .color-picker-group { display: flex; gap: 4px; align-items: center; position: relative; }
  .color-picker-label { font-size: 11px; color: var(--text-muted); }

  .color-dropdown-btn {
    display: flex; align-items: center; gap: 6px;
    padding: 3px 8px; border-radius: 4px; cursor: pointer;
    background: var(--bg-panel); border: 1px solid var(--border);
    font-size: 11px; color: var(--text);
  }
  .color-dropdown-btn:hover { border-color: var(--accent); }

  .color-dropdown-swatch {
    width: 12px; height: 12px; border-radius: 2px; flex-shrink: 0;
    border: 1px solid rgba(255,255,255,0.15);
  }
  .color-dropdown-name { white-space: nowrap; }

  .color-dropdown-popup {
    display: none; position: absolute; bottom: 100%; left: 0;
    background: var(--bg); border: 1px solid var(--border); border-radius: 4px;
    padding: 4px 0; z-index: 100; min-width: 130px;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.3);
    max-height: 240px; overflow-y: auto;
  }
  .color-dropdown-popup.open { display: block; }

  .color-dropdown-opt {
    display: flex; align-items: center; gap: 6px;
    padding: 3px 8px; cursor: pointer; font-size: 11px;
  }
  .color-dropdown-opt:hover { background: var(--hover); }
  .color-dropdown-opt.active { background: var(--selected-bg); color: var(--selected-text); }

  .fill-byte-input {
    width: 32px; padding: 4px 6px; font-family: monospace;
    font-size: 14px; text-align: center; text-transform: uppercase;
    border: 1px solid var(--border); border-radius: 3px;
    background: var(--bg); color: var(--text);
  }

  .hex-input.wide { width: 4ch; font-size: 14px; padding: 4px 6px; }

  .form-row { display: flex; gap: 16px; align-items: center; margin-bottom: 8px; }
  .form-label { font-size: 13px; width: 80px; }
  .opt-check-label { font-size: 13px; cursor: pointer; display: flex; align-items: flex-start; gap: 8px; }

  .opt-presets {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 12px;
  }

  .opt-preset {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid transparent;
  }

  .opt-preset:hover {
    background: var(--hover);
  }

  .opt-preset.selected {
    border-color: var(--accent);
    background: var(--hover);
  }

  .opt-preset input[type="radio"] {
    margin-top: 2px;
    flex-shrink: 0;
  }

  .opt-preset-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .opt-preset-label {
    font-size: 13px;
    font-weight: 600;
  }

  .opt-preset-desc {
    font-size: 11px;
    color: var(--text-muted);
  }

  .opt-preset-desc .hex-input {
    width: 28px;
    margin-left: 2px;
    text-align: right;
  }

  .opt-defrag-row {
    padding: 8px 10px;
    border-top: 1px solid var(--border);
  }

  .opt-defrag-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .btn-small {
    font-size: 12px;
    padding: 3px 12px;
    cursor: pointer;
    border: 1px solid var(--border);
    border-radius: 3px;
    background: var(--hover);
    color: var(--text);
  }

  .btn-small:hover { background: var(--menu-hover); }

  .btn-small.active {
    background: var(--accent);
    color: var(--bg);
  }

  .drop-active::after {
    content: 'Drop files here';
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(53, 40, 121, 0.85);
    color: #9ad284;
    font-family: 'C64 Pro Mono', monospace;
    font-size: 18px;
    z-index: 9999;
    pointer-events: none;
    border: 3px dashed var(--c64-text);
  }

  .geos-info-table {
    font-size: 13px;
    border-collapse: collapse;
    width: 100%;
  }

  .geos-info-label {
    color: var(--text-muted);
    padding: 3px 12px 3px 0;
    white-space: nowrap;
    vertical-align: top;
  }

  .geos-info-value {
    padding: 3px 0;
    white-space: pre-wrap;
  }

  .geos-info-name-row {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .geos-icon {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    width: 48px;
    height: 42px;
    flex-shrink: 0;
    border: 1px solid var(--border);
    border-radius: 2px;
  }

  .vlir-wrap {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .vlir-summary {
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
  }

  .vlir-hint {
    margin-top: 4px;
  }

  .vlir-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
  }

  .vlir-table th,
  .vlir-table td {
    text-align: left;
    padding: 3px 10px 3px 0;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
  }

  .vlir-table th {
    color: var(--text-muted);
    font-weight: normal;
    position: sticky;
    top: 0;
    background: var(--bg);
  }

  .vlir-row { cursor: pointer; }
  .vlir-row:hover { background: var(--hover); }
  .vlir-row-open { background: var(--hover); }
  .vlir-row-muted td { color: var(--text-muted); }
  .vlir-row-warn td { color: #d26a6a; }

  .vlir-chain td {
    color: var(--text-muted);
    padding-left: 12px;
    white-space: pre-wrap;
    word-break: break-all;
  }

  .vlir-chain-label {
    color: var(--text-muted);
    margin-right: 4px;
  }

  .vlir-ts {
    font-family: "Cascadia Code", "Consolas", monospace;
  }

  .vlir-st-used { color: #9ad284; }
  .vlir-st-empty { color: var(--text-muted); }
  .vlir-st-end { color: #e0c060; }
  .vlir-st-past { color: var(--text-muted); font-style: italic; }
  .vlir-st-bad { color: #d26a6a; }

  .vlir-issue {
    color: #d26a6a;
    font-style: italic;
  }

  .gfx-zoom-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
  }

  .gfx-canvas {
    display: block;
    margin: 0 auto;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    border: 1px solid var(--border);
  }

  .hex-editor {
    font-family: 'C64 Pro Mono', "Cascadia Code", "Consolas", monospace;
    font-size: 13px;
    line-height: 1.4;
  }

  .hex-row {
    display: flex;
    gap: 0;
    white-space: pre;
  }

  .hex-row:hover {
    background: var(--hover);
  }

  .hex-offset {
    color: var(--text-muted);
    width: 4ch;
    flex-shrink: 0;
    text-align: right;
    padding-right: 8px;
    font-family: "Cascadia Code", "Consolas", monospace;
  }

  .hex-bytes {
    flex-shrink: 0;
    padding-right: 12px;
    font-family: "Cascadia Code", "Consolas", monospace;
  }

  .dasm-offset, .dasm-bytes, .dasm-instr, .dasm-illegal, .dasm-unsafe {
    font-family: "Cascadia Code", "Consolas", monospace;
  }

  .dasm-offset {
    color: var(--text-muted);
    width: 6ch;
    flex-shrink: 0;
    text-align: right;
    padding-right: 8px;
  }

  .dasm-bytes {
    color: var(--text-muted);
    width: 10ch;
    flex-shrink: 0;
    padding-right: 12px;
  }

  .dasm-instr { color: var(--selected-text); }
  .dasm-illegal { color: var(--color-warn-gold); }
  .dasm-unsafe { color: var(--color-unsafe); }

  .dasm-sys-entry {
    background: var(--accent);
    background: color-mix(in srgb, var(--accent) 20%, transparent);
    border-left: 2px solid var(--accent);
  }

  .hex-byte {
    display: inline-block;
    width: 3ch;
    text-align: center;
    cursor: default;
  }

  .hex-byte:hover,
  .hex-byte.highlight {
    background: var(--accent);
    color: var(--bg);
    border-radius: 2px;
  }

  /* Reversed PETSCII bytes in the hex-ascii column: invert against the
     accent color the column already uses, so the fg/bg pair matches the
     surrounding chars instead of falling back to the default --text/--bg. */
  .hex-ascii .petscii-rev {
    background: var(--accent);
    color: var(--bg);
  }

  .hex-char.highlight {
    background: var(--accent);
    color: var(--bg);
    border-radius: 2px;
  }