/* ════════════════════════════════════════════════════
   tool.css — Gradient Generator tool styles
   Loaded only on the tool page (index.astro)
   Depends on global.css being loaded first
   ════════════════════════════════════════════════════ */

  /* ── HEADER ── */
  header {
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 100;
  }

  .header-left {
    display: flex;
    flex-direction: column;
    gap: 3px;
  }

  .logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--accent);
    line-height: 1;
    text-decoration: none;
  }

  .logo span { color: var(--text); }

  .header-tag {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--text3);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .header-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }

  .nav-link {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text2);
    text-decoration: none;
    padding: 6px 14px;
    border: 1px solid transparent;
    border-radius: 2px;
    transition: all 0.15s;
  }

  .nav-link:hover { color: var(--text); border-color: var(--border2); }
  .nav-link.active { color: var(--accent); border-color: var(--border2); background: var(--bg2); }
  .nav-link:focus { outline: none; }
  .nav-link:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,255,71,0.2); color: var(--accent); }

  /* ── FOOTER ── */
  footer {
    border-top: 1px solid var(--border);
    background: var(--bg2);
    padding: 1.1rem 2rem;
  }

  .footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
  }

  .footer-copy {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text3);
    letter-spacing: 0.04em;
  }

  .footer-nav {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .footer-link {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text3);
    text-decoration: none;
    transition: color 0.15s;
  }

  .footer-link:hover { color: var(--accent); }
  .footer-link:focus { outline: none; }
  .footer-link:focus-visible { outline: none; color: var(--accent); box-shadow: 0 0 0 2px rgba(232,255,71,0.35); border-radius: 1px; }

  .footer-sep {
    color: var(--border2);
    font-size: 0.7rem;
  }

  /* ── AD BANNER ── */
  .ad-banner {
    width: 100%;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 10px 2rem;
    min-height: 110px;
    position: relative;
  }

  .ad-label {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text3);
    margin-bottom: 6px;
  }

  .ad-placeholder {
    width: 100%;
    max-width: 728px;
    height: 90px;
    border: 1px dashed var(--border2);
    border-radius: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .ad-placeholder span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text3);
    letter-spacing: 0.06em;
  }

  /* ── LAYOUT ── */
  .app {
    display: grid;
    grid-template-columns: 360px 1fr 320px;
    min-height: calc(100vh - 60px);
  }

  .token-panel {
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    background: var(--bg2);
    position: sticky;
    top: 60px;
    height: calc(100vh - 60px);
    overflow-y: auto;
  }

  .token-panel-header {
    padding: 1.25rem 1.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
  }

  .token-panel-title {
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text);
    margin-bottom: 2px;
  }

  .token-panel-sub {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--text3);
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }

  .token-panel-body {
    flex: 1;
    padding: 1.25rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
  }

  /* ── Token name field ── */
  .token-name-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .token-name-wrap {
    display: flex;
    align-items: center;
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 2px;
    overflow: hidden;
    transition: border-color 0.2s;
  }

  .token-name-wrap:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(232,255,71,0.18);
  }

  .token-prefix-display {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    padding: 7px 0 7px 10px;
    white-space: nowrap;
    flex-shrink: 0;
    user-select: none;
  }

  .token-name-input {
    background: none;
    border: none;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 7px 10px 7px 4px;
    flex: 1;
    outline: none;
    min-width: 0;
  }

  .token-name-input::placeholder { color: var(--text3); }

  /* ── Prefix field ── */
  .token-prefix-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .token-prefix-input {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    padding: 7px 10px;
    border-radius: 2px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
  }

  .token-prefix-input:focus-visible {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(232,255,71,0.18);
    outline: none;
  }

  /* ── Live token preview ── */
  .token-resolved {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--accent);
    background: rgba(232,255,71,0.06);
    border: 1px solid rgba(232,255,71,0.2);
    border-radius: 2px;
    padding: 6px 10px;
    word-break: break-all;
  }

  /* ── Live :root output ── */
  .token-output-label {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 4px;
  }

  .token-code-block {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 2px;
    padding: 14px;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    color: var(--text);
    line-height: 1.9;
    word-break: break-all;
    flex: 1;
    position: relative;
    white-space: pre-wrap;
  }

  /* Syntax highlight tokens — shared by tp-code and code-text */
  .sh-selector  { color: #a78bfa; }          /* :root, .element         */
  .sh-prop      { color: #67e8f9; }          /* background, etc.        */
  .sh-var       { color: var(--accent); }    /* --grad-primary           */
  .sh-value     { color: #f9a8d4; }          /* linear-gradient(...)    */
  .sh-hex       { color: #4ade80; }          /* #ff0066                 */
  .sh-num       { color: #fb923c; }          /* 135deg, 0%, 50%         */
  .sh-punct     { color: var(--text3); }     /* { } : ; ( ) ,           */
  .sh-comment   { color: var(--text3);
                  font-style: italic; }      /* /* ... */

  .token-copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px;
    background: rgba(232,255,71,0.08);
    border: 1px solid rgba(232,255,71,0.3);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .token-copy-btn:hover { background: rgba(232,255,71,0.14); border-color: var(--accent); }
  .token-copy-btn:focus { outline: none; }
  .token-copy-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(232,255,71,0.25); }
  .token-copy-btn.copied { border-color: #5dca99; color: #5dca99; background: rgba(93,202,153,0.08); }
  .token-copy-btn.error  { border-color: var(--accent2); color: var(--accent2); background: rgba(255,71,71,0.06); }

  .token-divider {
    height: 1px;
    background: var(--border);
  }

  /* ── Format toggles in token panel ── */
  .token-format-row {
    display: flex;
    gap: 4px;
  }

  .token-fmt-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text3);
    font-family: var(--font-mono);
    font-size: 0.58rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    padding: 4px 10px;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .token-fmt-btn.active { color: var(--accent); border-color: var(--accent); background: rgba(232,255,71,0.07); }
  .token-fmt-btn:hover:not(.active) { color: var(--text2); border-color: var(--border2); }
  .token-fmt-btn:focus { outline: none; }
  .token-fmt-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(232,255,71,0.2); }

  .sidebar {
    border-right: 1px solid var(--border);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    overflow-y: auto;
  }

  .main-panel {
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }

  /* ── SECTION LABELS ── */
  .section-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text3);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .section-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
  }

  /* ── COLOR STOPS ── */
  .stops-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .stop-row {
    display: grid;
    grid-template-columns: 44px 1fr auto auto;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 2px;
    transition: border-color 0.2s;
  }

  .stop-row:hover { border-color: var(--border2); }

  .color-swatch-wrap {
    position: relative;
    width: 44px;
    height: 44px;
    border-radius: 2px;
    overflow: hidden;
    border: 1px solid var(--border2);
    cursor: pointer;
    flex-shrink: 0;
  }

  .color-swatch-wrap input[type="color"] {
    position: absolute;
    inset: -4px;
    width: calc(100% + 8px);
    height: calc(100% + 8px);
    border: none;
    cursor: pointer;
    padding: 0;
    background: none;
  }

  /* Stop swatch background driven by --stop-color */
  .color-swatch-wrap { background: var(--stop-color, #888); }

  /* A11y swatch cells — background and foreground from CSS vars */
  .a11y-swatch-fg {
    background: var(--a11y-stop-color);
    color:      var(--a11y-bg-color);
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.55rem;
    font-family: var(--font-mono);
    font-weight: 700;
  }

  .a11y-swatch-bg {
    background: var(--a11y-bg-color);
    color:      var(--a11y-stop-color);
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.55rem;
    font-family: var(--font-mono);
    font-weight: 700;
  }

  /* A11y level label — typography driven purely by CSS, no inline style */
  .a11y-level {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    margin-top: 2px;
  }

  /* Preset swatch gradient driven by --preset-gradient */
  .preset-swatch { background: var(--preset-gradient); }

  .stop-hex {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 6px 10px;
    border-radius: 2px;
    width: 100%;
    outline: none;
    transition: border-color 0.2s;
  }

  .stop-hex:focus { border-color: var(--accent); }
  .stop-hex:focus-visible { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,255,71,0.25); outline: none; }

  .stop-pos {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text3);
    min-width: 36px;
    text-align: center;
  }

  .btn-icon {
    background: none;
    border: 1px solid var(--border);
    color: var(--text3);
    width: 28px;
    height: 28px;
    border-radius: 2px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.15s;
    flex-shrink: 0;
  }

  .btn-icon:hover { border-color: var(--accent2); color: var(--accent2); }
  .btn-icon:focus { outline: none; }
  .btn-icon:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(255,71,71,0.35); border-color: var(--accent2); }

  .btn-add {
    background: none;
    border: 1px dashed var(--border2);
    color: var(--text3);
    width: 100%;
    padding: 10px;
    border-radius: 2px;
    cursor: pointer;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    transition: all 0.2s;
    text-transform: uppercase;
  }

  .btn-add:hover { border-color: var(--accent); color: var(--accent); }
  .btn-add:focus { outline: none; }
  .btn-add:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,255,71,0.25); }

  /* ── CONTROLS ── */
  .controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .ctrl-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  .ctrl-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text2);
  }

  select, input[type="number"] {
    background: var(--bg3);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 7px 10px;
    border-radius: 2px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    outline: none;
    width: 100%;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
  }

  select:focus, input[type="number"]:focus { border-color: var(--accent); }
  select:focus-visible, input[type="number"]:focus-visible {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(232, 255, 71, 0.25);
    outline: none;
  }

  select option { background: var(--bg2); }

  .angle-wrap {
    display: flex;
    gap: 6px;
  }

  .angle-wrap input[type="number"] { flex: 1; }

  .angle-disc {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--bg3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
    transition: border-color 0.2s;
  }

  .angle-disc:hover { border-color: var(--accent); }
  .angle-disc:focus { outline: none; }
  .angle-disc:focus-visible {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(232, 255, 71, 0.3);
    outline: none;
  }

  .angle-needle {
    width: 2px;
    height: 12px;
    background: var(--accent);
    border-radius: 1px;
    transform-origin: bottom center;
    position: absolute;
    bottom: 50%;
    left: calc(50% - 1px);
    transition: transform 0.1s;
  }

  /* ── SLIDER ── */
  .slider-wrap {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }

  input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--border2);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
  }

  input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
  }

  input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }

  input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent);
    border-radius: 50%;
    border: none;
    cursor: pointer;
  }

  /* ── GRADIENT PREVIEW ── */
  .preview-section {
    flex: 1;
    display: flex;
    flex-direction: column;
  }

  .preview-bar {
    flex: 1;
    min-height: 280px;
    position: relative;
    cursor: crosshair;
  }

  .preview-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    gap: 6px;
    padding: 1.5rem;
    pointer-events: none;
  }

  /* Re-enable pointer events only on interactive children */
  .preview-overlay .preview-css-badge { pointer-events: none; }
  .preview-overlay .preview-copy-btn  { pointer-events: auto; }

  .preview-css-badge {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    background: rgba(0,0,0,0.7);
    color: #f0ede6;
    padding: 8px 14px;
    border-radius: 2px;
    border: 1px solid rgba(255,255,255,0.1);
    max-width: 70%;
    word-break: break-all;
    backdrop-filter: blur(4px);
  }

  /* Inline copy button — sits right of the CSS badge in the overlay */
  .preview-copy-btn {
    background: rgba(0,0,0,0.65);
    border: 1px solid rgba(255,255,255,0.15);
    color: var(--text2);
    font-size: 0.85rem;
    line-height: 1;
    padding: 7px 9px;
    border-radius: 2px;
    cursor: pointer;
    backdrop-filter: blur(4px);
    transition: border-color 0.15s, color 0.15s, background 0.15s;
    flex-shrink: 0;
  }

  .preview-copy-btn:hover { border-color: var(--accent); color: var(--accent); }
  .preview-copy-btn.copied { border-color: #5dca99; color: #5dca99; }
  .preview-copy-btn:focus { outline: none; }
  .preview-copy-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(232,255,71,0.3); }

  /* ── A11Y SECTION ── */
  /* ── A11Y SECTION ── */
  .a11y-section {
    border-top: 1px solid var(--border);
    padding: 1.5rem 2rem;
  }

  /* details/summary disclosure wrapper for the WCAG grid */
  .a11y-details {
    width: 100%;
  }

  .a11y-summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
    /* Reuse section-label appearance */
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text3);
  }

  /* Remove default marker in all browsers */
  .a11y-summary::-webkit-details-marker { display: none; }
  .a11y-summary::marker               { display: none; }

  /* Chevron indicator — rotates when open */
  .a11y-summary::after {
    content: '›';
    font-size: 1.1rem;
    line-height: 1;
    color: var(--text2);
    background: var(--bg3);
    border: 1px solid var(--border2);
    border-radius: 2px;
    padding: 1px 7px;
    transition: transform 0.2s, color 0.15s, border-color 0.15s;
    display: inline-block;
    flex-shrink: 0;
  }

  .a11y-summary:hover::after {
    color: var(--accent);
    border-color: var(--accent);
  }

  .a11y-details[open] > .a11y-summary::after {
    transform: rotate(90deg);
    color: var(--accent);
    border-color: var(--accent);
  }

  .a11y-summary:focus { outline: none; }
  .a11y-summary:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px rgba(232,255,71,0.35);
    border-radius: 1px;
  }

  /* On desktop: always open, no pointer cursor needed */
  @media (min-width: 781px) {
    .a11y-details[open],
    .a11y-details:not([open]) {
      /* Force open on desktop via attribute set in JS (see below) */
    }
    .a11y-summary {
      cursor: default;
      pointer-events: none;   /* not interactive on desktop */
    }
    .a11y-summary::after { display: none; }
  }

  /* On mobile: hide presets entirely */
  @media (max-width: 780px) {
    .presets-block { display: none; }
  }

  .a11y-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 10px;
    margin-top: 1rem;
  }

  .a11y-card {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 2px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: border-color 0.2s;
  }

  .a11y-pair {
    display: flex;
    gap: 8px;
    align-items: center;
  }

  .a11y-swatch-pair {
    display: flex;
    width: 44px;
    height: 28px;
    border-radius: 2px;
    overflow: hidden;
    flex-shrink: 0;
  }

  .a11y-swatch-pair div {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 700;
  }

  .a11y-info {
    flex: 1;
  }

  .a11y-ratio {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text);
  }

  .a11y-level {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    margin-top: 2px;
  }

  .pass-aaa { color: #5dca99; }
  .pass-aa { color: #e8c547; }
  .fail { color: var(--accent2); }

  .a11y-badge {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    padding: 2px 6px;
    border-radius: 2px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    display: inline-block;
  }

  .badge-aaa { background: rgba(93,202,153,0.15); color: #5dca99; border: 1px solid rgba(93,202,153,0.3); }
  .badge-aa { background: rgba(232,197,71,0.15); color: #e8c547; border: 1px solid rgba(232,197,71,0.3); }
  .badge-fail { background: rgba(255,71,71,0.1); color: var(--accent2); border: 1px solid rgba(255,71,71,0.2); }

  /* ── OUTPUT PANEL ── */
  .output-section {
    border-top: 1px solid var(--border);
    padding: 1.5rem 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
  }

  .output-tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0;
    margin-bottom: 0;
  }

  .tab-btn {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text3);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 6px 14px 8px;
    cursor: pointer;
    margin-bottom: -1px;
    transition: all 0.15s;
  }

  .tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
  .tab-btn:hover:not(.active) { color: var(--text2); }
  .tab-btn:focus { outline: none; }
  .tab-btn:focus-visible { outline: none; color: var(--accent); box-shadow: inset 0 -3px 0 var(--accent); }

  /* ── CSS Vars sub-toggle ── */
  .vars-mode-toggle {
    display: flex;
    gap: 4px;
    padding: 8px 0 0;
  }

  .vars-mode-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text3);
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 4px 12px;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .vars-mode-btn.active {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(232, 255, 71, 0.07);
  }

  .vars-mode-btn:hover:not(.active) { border-color: var(--border2); color: var(--text2); }
  .vars-mode-btn:focus { outline: none; }
  .vars-mode-btn:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,255,71,0.2); }

  .code-block {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 2px;
    padding: 14px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text);
    line-height: 1.8;
    word-break: break-all;
    position: relative;
    min-height: 72px;
  }

  .copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--bg3);
    border: 1px solid var(--border2);
    color: var(--text2);
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 4px 10px;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .copy-btn:hover { border-color: var(--accent); color: var(--accent); }
  .copy-btn:focus { outline: none; }
  .copy-btn:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,255,71,0.25); }
  .copy-btn.copied { border-color: #5dca99; color: #5dca99; }
  .copy-btn.error  { border-color: var(--accent2); color: var(--accent2); }

  /* ── PRESETS ── */
  .presets-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
  }

  .preset-chip {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 2px;
    padding: 6px 10px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .preset-chip:hover { border-color: var(--border2); }
  .preset-chip:focus { outline: none; }
  .preset-chip:focus-visible { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(232,255,71,0.2); }
  .preset-chip:active { transform: scale(0.97); }

  .preset-swatch {
    width: 36px;
    height: 18px;
    border-radius: 1px;
    flex-shrink: 0;
  }

  .preset-name {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text2);
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  /* ── EXPORT NAMING ── */
  .naming-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .naming-full   { grid-column: 1 / -1; }
  .naming-name   { grid-column: 1; }
  .naming-prefix { grid-column: 2; }

  .naming-toggle {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 2px;
    overflow: hidden;
  }

  .naming-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--text3);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 7px 6px;
    cursor: pointer;
    transition: all 0.15s;
    border-right: 1px solid var(--border);
  }

  .naming-btn:last-child { border-right: none; }
  .naming-btn.active { background: rgba(232,255,71,0.09); color: var(--accent); }
  .naming-btn:hover:not(.active) { color: var(--text2); background: var(--bg3); }
  .naming-btn:focus { outline: none; }
  .naming-btn:focus-visible { outline: none; box-shadow: inset 0 0 0 2px var(--accent); }

  .token-preview {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--accent);
    background: var(--bg3);
    border: 1px solid var(--border);
    border-radius: 2px;
    padding: 7px 10px;
    word-break: break-all;
  }
  
  /* ── UTILITY ── */

  /* Visually hidden but accessible to screen readers.
     Replaces the inline style blob on #sr-announcer. */
  .sr-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  
  /* ── TEXT-ON-GRADIENT CONTRAST PREVIEW ── */

  .text-preview-section {
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
  }

  /* The bar that shows real text rendered over the gradient */
  .text-preview-bar {
    position: relative;
    min-height: 140px;
    display: flex;
    align-items: stretch;
  }

  /* Three columns — left / center / right — each sampled independently */
  .text-preview-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    padding: 20px 18px;
    position: relative;
  }

  .text-preview-col + .text-preview-col {
    border-left: 1px solid rgba(255,255,255,0.08);
  }

  /* Mobile: horizontal scroll so all three columns stay side-by-side
     and the user can swipe to see the third column. */
  @media (max-width: 780px) {
    .text-preview-bar {
      overflow-x: auto;
      -webkit-overflow-scrolling: touch; /* momentum scroll on iOS */
      scroll-snap-type: x mandatory;
    }

    .text-preview-col {
      flex: 0 0 72vw;   /* each column is 72% of viewport — 1.3 visible at a time */
      min-width: 220px;
      scroll-snap-align: start;
    }
  }

  /* Sample texts at three sizes */
  .tp-heading {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 800;
    line-height: 1.1;
    margin: 0;
    pointer-events: none;
    user-select: none;
  }

  .tp-body {
    font-family: var(--font-display);
    font-size: 0.8rem;
    line-height: 1.4;
    margin: 0;
    pointer-events: none;
    user-select: none;
  }

  .tp-small {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    line-height: 1.3;
    margin: 0;
    pointer-events: none;
    user-select: none;
  }

  /* Badge strip below the preview */
  .text-contrast-results {
    background: var(--bg2);
    border-top: 1px solid var(--border);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .tcr-col {
    padding: 10px 14px;
    display: flex;
    flex-direction: column;
    gap: 5px;
  }

  .tcr-col + .tcr-col { border-left: 1px solid var(--border); }

  .tcr-position {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text3);
    margin-bottom: 2px;
  }

  .tcr-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
  }

  .tcr-label {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--text2);
  }

  .tcr-badge {
    font-family: var(--font-mono);
    font-size: 0.52rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 2px;
    letter-spacing: 0.05em;
    flex-shrink: 0;
  }

  .tcr-pass-aaa { background: rgba(93,202,153,0.15); color: #5dca99; border: 1px solid rgba(93,202,153,0.3); }
  .tcr-pass-aa  { background: rgba(232,197,71,0.15);  color: #e8c547; border: 1px solid rgba(232,197,71,0.3);  }
  .tcr-fail     { background: rgba(255,71,71,0.10);   color: #ff4747; border: 1px solid rgba(255,71,71,0.2);  }

  /* Text colour toggle — white / black / auto */
  .text-color-bar {
    background: var(--bg2);
    border-top: 1px solid var(--border);
    padding: 8px 14px;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .text-color-label {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--text3);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    white-space: nowrap;
  }

  /* Vision simulation indicator in the text contrast bar */
  .tp-sim-badge {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--accent);
    background: rgba(232,255,71,0.08);
    border: 1px solid rgba(232,255,71,0.25);
    border-radius: 2px;
    padding: 2px 8px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .text-color-toggle {
    display: flex;
    gap: 4px;
  }

  .tc-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text3);
    font-family: var(--font-mono);
    font-size: 0.58rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 10px;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.15s;
  }

  .tc-btn.active { color: var(--accent); border-color: var(--accent); background: rgba(232,255,71,0.07); }
  .tc-btn:hover:not(.active) { color: var(--text2); border-color: var(--border2); }
  .tc-btn:focus { outline: none; }
  .tc-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(232,255,71,0.2); }

  /* Bar above the preview: "Vision Modes" label + buttons + compare toggle */
  /* ── Vision control bar — always visible strip above both panes ── */
  .vision-control-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 7px 14px;
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    position: relative;   /* popover is positioned relative to this */
  }

  /* ── Vision toggle button — static flow, left side of bar ── */
  .vision-toggle-btn {
    background: none;
    border: 1px solid var(--border2);
    color: var(--text2);
    font-family: var(--font-mono);
    font-size: 0.58rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    padding: 5px 12px;
    border-radius: 2px;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .vision-toggle-btn:hover { border-color: var(--accent); color: var(--accent); }
  .vision-toggle-btn.is-active { border-color: var(--accent); color: var(--accent); background: rgba(232,255,71,0.07); }
  .vision-toggle-btn:focus { outline: none; }
  .vision-toggle-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(232,255,71,0.3); }

  .vision-toggle-arrow {
    display: inline-block;
    font-size: 0.75rem;
    line-height: 1;
    transition: transform 0.18s ease;
    transform: rotate(90deg);   /* › points down by default */
  }

  /* Rotate arrow up when popover is open */
  .vision-toggle-btn[aria-expanded="true"] .vision-toggle-arrow {
    transform: rotate(-90deg);
  }

  /* Compare checkbox — right side of bar, always visible */
  .vision-compare-persistent {
    display: flex;
    align-items: center;
    gap: 7px;
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--text2);
    cursor: pointer;
    user-select: none;
  }

  .vision-compare-persistent input[type="checkbox"] {
    accent-color: var(--accent);
    cursor: pointer;
    width: 13px;
    height: 13px;
  }


  /* ── Vision popover — anchored below the toggle button ── */
  .vision-popover {
    position: absolute;
    top: calc(100% + 4px);
    left: 14px;
    z-index: 20;
    background: var(--bg2);
    border: 1px solid var(--border2);
    border-radius: 3px;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 210px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  }

  .vision-popover-label {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text3);
    padding: 2px 4px 6px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2px;
  }

  .vision-option {
    background: none;
    border: 1px solid transparent;
    color: var(--text2);
    font-family: var(--font-mono);
    font-size: 0.63rem;
    text-align: left;
    padding: 6px 8px;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.1s;
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
  }

  .vision-option:hover { background: var(--bg3); color: var(--text); }
  .vision-option.active { color: var(--accent); border-color: rgba(232,255,71,0.25); background: rgba(232,255,71,0.06); }
  .vision-option:focus { outline: none; }
  .vision-option:focus-visible { outline: none; box-shadow: 0 0 0 2px rgba(232,255,71,0.4); }

  .vision-option-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    border: 1px solid var(--border2);
    flex-shrink: 0;
  }

  .vision-option.active .vision-option-dot { background: var(--accent); border-color: var(--accent); }

  .vision-compare-pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .vision-compare-cell { position: relative; }

  /* Targets the <div> swatches inside compare cells */
  .vision-compare-swatch {
    display: block;
    width: 100%;
    height: 220px;
    background-size: cover;
    background-position: center;
  }

  .vision-compare-cell + .vision-compare-cell { border-left: 2px solid var(--border); }

  /* Badge row below the preview */
  .vision-badges-bar {
    border-top: 1px solid var(--border);
    background: var(--bg2);
    padding: 8px 1.25rem;
    min-height: 38px;
  }

  .vision-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
  }

  .vision-badge {
    font-family: var(--font-mono);
    font-size: 0.58rem;
    padding: 3px 10px;
    border-radius: 2px;
    letter-spacing: 0.06em;
    border: 1px solid;
  }

  .vision-badge-safe   { color: #5dca99; border-color: rgba(93,202,153,0.35); background: rgba(93,202,153,0.08); }
  .vision-badge-warn   { color: #e8c547; border-color: rgba(232,197,71,0.35);  background: rgba(232,197,71,0.08);  }
  .vision-badge-danger { color: var(--accent2); border-color: rgba(255,71,71,0.25); background: rgba(255,71,71,0.06); }

  @media (max-width: 1100px) {
    .app { grid-template-columns: 320px 1fr; }
    .token-panel { display: none; }
  }
  @media (max-width: 780px) {
    .app { grid-template-columns: 1fr; }
    .sidebar { border-right: none; border-bottom: 1px solid var(--border); }
  }

  /* ── Mobile / tablet design token section ── */
  .mobile-token-section {
    display: none;        /* hidden on desktop */
    border-top: 1px solid var(--border);
    background: var(--bg2);
  }

  .mobile-token-inner {
    max-width: 720px;
    margin: 0 auto;
    padding: 1.5rem 1.25rem 2rem;
  }

  .mobile-token-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 0.75rem;
  }

  @media (max-width: 480px) {
    .mobile-token-fields { grid-template-columns: 1fr; }
  }

  @media (max-width: 1100px) {
    .mobile-token-section { display: block; }
  }

  /* ── Contextual FAB — mobile / tablet only ── */
  .fab-token {
    position: fixed;
    bottom: calc(1.25rem + env(safe-area-inset-bottom, 0px));
    right: 1.25rem;
    z-index: 200;
    background: var(--bg2);
    border: 1px solid #a78bfa;
    color: #a78bfa;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    padding: 9px 18px;
    border-radius: 20px;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0,0,0,0.45);
    transition: opacity 0.2s, transform 0.2s, border-color 0.15s, color 0.15s;
    opacity: 0;
    transform: translateY(6px);
    pointer-events: none;
  }

  /* Visible state — toggled by JS */
  .fab-token.is-visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  /* Dimmed state — token section is in view, mtp-copy-btn is already visible */
  .fab-token.is-dimmed {
    border-color: var(--border2);
    color: var(--text3);
    background: var(--bg2);
    box-shadow: none;
  }

  .fab-token:focus { outline: none; }
  .fab-token:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(232,255,71,0.3), 0 4px 16px rgba(0,0,0,0.45); }

  /* Only show the FAB on tablet/mobile — not on desktop */
  @media (min-width: 1101px) {
    .fab-token { display: none !important; }
  }