/* --------------------------------------------
   Reset & root tokens
----------------------------------------------- */
* {
  box-sizing: border-box;
}
:root {
  color-scheme: light dark;
  background: light-dark(white, #1a1a1a);

  /* Typography — fonts */
  --font-display: 'Warbler Display', Georgia, serif;
  --font-banner:  'Warbler Banner', Georgia, serif;
  --font-text:    'Warbler Text', Georgia, serif;
  --font-label:   'Output Sans', system-ui, sans-serif;
  --font-mono:    ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, "DejaVu Sans Mono", monospace;

  /* Typography — size scale */
  --text-2xs:  0.65rem;
  --text-xs:   0.7rem;
  --text-sm:   0.75rem;
  --text-md:   0.8rem;
  --text-lg:   0.85rem;
  --text-xl:   0.9rem;
  --text-base: 1rem;
  --text-2xl:  1.2rem;
  --text-3xl:  1.5rem;

  /* Field guide palette — shared with home page */
  --color-text: #271a0e;
  --color-text-muted: #5a4e40;
  --color-text-faint: #766a5a;
  --color-accent: #496677;
  --color-accent-hover: #3a5565;
  --color-surface: #f5f1ec;
  --color-surface-inline-code: #e8e2da;
  --color-border: #c4beb2;

  /* Brand gold (used on green nav) */
  --color-gold: #e8b020;
  --color-gold-hover: #f5d680;

  /* Olive nav background (matches home hero) */
  --nav-bg: #576f3f;

  /* Code panel (always dark) */
  --code-bg: #1d2e3c;
  --code-border: #2f4252;
  --code-text: #f0f3f8;
  --color-copied: #496677;

  --paper: url('home/paper-texture.png');
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-text: #ddd8d0;
    --color-text-muted: #a89888;
    --color-text-faint: #7a6e5e;
    --color-accent: #9FB2CD;
    --color-accent-hover: #b0c0d8;
    --color-surface: #1e1a14;
    --color-surface-inline-code: #28241e;
    --color-border: #383028;
    --nav-bg: #2a3818;
  }
}

img {
  display: block;
  width: 100%;
  height: auto;
}
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* --------------------------------------------
   Skip link
----------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.5em 1em;
  background: #1d1d1f;
  color: #f5f5f7;
  border-radius: 6px;
  font-family: -apple-system, system-ui, sans-serif;
  font-size: 14px;
  text-decoration: none;
  &:focus { top: 1rem; }
}

/* --------------------------------------------
   Body & demo content
----------------------------------------------- */
body {
  font-family: var(--font-text);
  font-size: 1.2rem;
  margin: 0;
  background: var(--gradient-intro);
}

main {
  padding-block: calc(2vw + 1rem);
  padding-inline: calc(2vw + 1rem);
}

/* --------------------------------------------
   Warning banner — shown on every demo when grid-lanes is unsupported.
   Markup is identical on every demo:
     <footer class="warning"><p>…<a href="…">supports Grid Lanes</a>.</p></footer>
   Self-contained styling — does not inherit demo-specific body font/line-height.
----------------------------------------------- */
@supports (display: grid-lanes) {
  .warning { display: none; }
}
.warning {
  background: color(display-p3 0.68 0.111 0.061);
  padding: 0.85rem 1.5rem;
  text-align: center;

  p {
    margin: 0;
    color: #eee;
    font-family: var(--font-text);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
  }
  a {
    color: #eee;
    text-decoration: underline;
  }
}

/* --------------------------------------------
   Top navigation — full-width green bar
----------------------------------------------- */
.demo-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--nav-bg);
  background-image: var(--paper);
  background-blend-mode: multiply;
  box-shadow:
    inset 0 0 80px rgba(0, 0, 0, 0.18),
    0 1px 3px rgba(0, 0, 0, 0.12);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem 2rem;
  padding: 0.7rem clamp(1rem, 2.5vw, 2rem);
  font-family: var(--font-label);

  .brand {
    font-family: var(--font-banner);
    font-style: italic;
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 1;
    letter-spacing: 0.01em;
    color: var(--color-gold);
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.15s;
    &:hover { color: var(--color-gold-hover); }
  }

  .nav-links {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.4rem 1.25rem;
    font-family: var(--font-text);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;

    .nav-label {
      font-family: var(--font-banner);
      font-style: italic;
      font-weight: 400;
      font-size: 1.4rem;
      letter-spacing: 0.01em;
      text-transform: none;
      color: #ad8213;
    }
    a {
      color: var(--color-gold);
      text-decoration: none;
      transition: color 0.15s;
      &:hover { color: var(--color-gold-hover); }
    }
    [aria-current="page"] {
      color: #fff;
    }
  }
}

/* --------------------------------------------
   Toolbar — floating glass panel with controls + code
----------------------------------------------- */
.toolbar {
  position: sticky;
  top: calc(var(--nav-height, 3rem) + 0.75rem);
  z-index: 49;
  margin: 0.75rem clamp(0.75rem, 2vw, 1.5rem) 0;
  padding: 1rem 1.1rem;
  border-radius: 18px;

  /* Olive-green accent — ties to the nav bar */
  --color-accent: #576f3f;
  --color-accent-hover: #6d8a4f;

  /* Liquid glass */
  background: light-dark(rgba(255, 255, 255, 0.55), rgba(36, 32, 28, 0.55));
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid light-dark(rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.08));
  box-shadow:
    0 1px 0 light-dark(rgba(255, 255, 255, 0.35), rgba(255, 255, 255, 0.06)) inset,
    0 8px 28px rgba(0, 0, 0, 0.14),
    0 2px 6px rgba(0, 0, 0, 0.08);

  display: grid;
  grid-template-columns: minmax(15rem, 32rem) minmax(0, 60rem);
  justify-content: center;
  gap: 0.85rem 1.25rem;
  align-items: stretch;
  font-family: -apple-system, system-ui, sans-serif;
  font-size: var(--text-lg);
  color: var(--color-text);

  .toolbar-controls {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-rows: repeat(4, auto) 1fr;
    align-items: center;
    row-gap: 0.45rem;
    column-gap: 0.85rem;
    min-width: 0;
    padding: 0.1rem 0.25rem;
  }

  label {
    display: grid;
    grid-template-columns: subgrid;
    grid-column: 1 / -1;
    align-items: center;
    column-gap: 0.85rem;
    min-height: 2.4rem;
    min-width: 0;

    > span {
      color: var(--color-text-muted);
      font-size: var(--text-md);
      font-weight: 500;
      letter-spacing: 0;
      min-width: 5.25em;
    }
  }

  .layout-switcher select,
  .theme-switcher select {
    grid-column: 2 / -1;
    min-width: 0;
  }

  .number-toggle input[type="checkbox"][switch] {
    grid-column: 2 / -1;
    justify-self: start;
    accent-color: var(--color-accent);
    border: 1px solid light-dark(rgba(0, 0, 0, 0.22), rgba(255, 255, 255, 0.22));
    border-radius: 999px;
  }

  .tolerance-slider {
    input[type="range"] {
      grid-column: 2;
      min-width: 0;
      accent-color: var(--color-accent);
      background: light-dark(rgba(0, 0, 0, 0.18), rgba(255, 255, 255, 0.18));
      border-radius: 999px;
      height: 4px;
    }
    output {
      grid-column: 3;
      min-width: 3.5em;
      font-family: var(--font-mono);
      font-size: var(--text-md);
      color: var(--color-text-muted);
      text-align: right;
    }
    &.disabled {
      opacity: 0.4;
      pointer-events: none;
    }
  }

  .ui-hide {
    grid-column: 1 / -1;
    grid-row: -1;
    align-self: end;
    justify-self: start;
    border: 1px solid light-dark(rgba(0, 0, 0, 0.22), rgba(255, 255, 255, 0.22));
    background: light-dark(rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.08));
    color: var(--color-text);
    padding: 0.5em 1.3em;
    font-family: inherit;
    font-size: var(--text-md);
    font-weight: 500;
    border-radius: 999px;
    cursor: pointer;
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.9),
      0 1px 2px rgba(0, 0, 0, 0.04);
    transition: transform 0.1s, box-shadow 0.15s, background 0.15s, border-color 0.15s;
    &:hover {
      background: light-dark(rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.14));
      border-color: light-dark(rgba(0, 0, 0, 0.12), rgba(255, 255, 255, 0.18));
      box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 1),
        0 2px 5px rgba(0, 0, 0, 0.06);
    }
    &:active {
      transform: translateY(0.5px);
      background: light-dark(rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.04));
      box-shadow:
        inset 0 1px 2px rgba(0, 0, 0, 0.06),
        0 1px 1px rgba(0, 0, 0, 0.03);
    }
  }
}

/* --------------------------------------------
   Custom-styled <select> — glass-friendly
----------------------------------------------- */
.toolbar select {
  appearance: base-select;
  font-family: -apple-system, system-ui, sans-serif;
  font-size: var(--text-lg);
  background: light-dark(rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.08));
  color: var(--color-text);
  border: 1px solid light-dark(rgba(0, 0, 0, 0.22), rgba(255, 255, 255, 0.22));
  border-radius: 999px;
  padding: 0.45em 2.4em 0.45em 1em;
  cursor: pointer;
  position: relative;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 1px 2px rgba(0, 0, 0, 0.04);
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;

  &:hover {
    background: light-dark(rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.14));
    border-color: light-dark(rgba(0, 0, 0, 0.12), rgba(255, 255, 255, 0.18));
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 1),
      0 2px 5px rgba(0, 0, 0, 0.06);
  }

  &::picker-icon {
    content: "❯";
    font-size: 10px;
    color: var(--color-accent);
    rotate: 90deg;
    position: absolute;
    right: 1em;
    top: 50%;
    translate: 0 -50%;
    transition: rotate 0.15s;
  }
  &:open::picker-icon {
    rotate: -90deg;
  }

  &::picker(select) {
    appearance: base-select;
    background: light-dark(rgba(255, 255, 255, 0.85), rgba(36, 32, 28, 0.85));
    color: var(--color-text);
    border: 1px solid light-dark(rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.12));
    border-radius: 14px;
    padding: 5px;
    backdrop-filter: blur(28px) saturate(180%);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    box-shadow:
      0 1px 0 light-dark(rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.08)) inset,
      0 12px 36px rgba(0, 0, 0, 0.18);
    margin-top: 6px;
    font-family: -apple-system, system-ui, sans-serif;
    font-size: var(--text-lg);
    min-width: anchor-size(width);
  }
}

.toolbar option {
  border-radius: 6px;
  padding: 0.4em 1em 0.4em 0.5em;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;

  &:hover {
    background: light-dark(rgba(0, 0, 0, 0.06), rgba(255, 255, 255, 0.08));
  }
  &:checked {
    background: color-mix(in oklab, var(--color-accent) 22%, transparent);
    color: var(--color-accent-hover);
    font-weight: 600;
  }
  &::checkmark {
    content: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 16 16' fill='none' stroke='%23576f3f' stroke-width='2' stroke-linecap='square' stroke-linejoin='miter'><path d='M3 8.5 L6.5 12 L13 5'/></svg>");
    margin-right: 6px;
    flex-shrink: 0;
  }
}

@media (prefers-color-scheme: dark) {
  .toolbar {
    --color-accent: #b8c870;
    --color-accent-hover: #d0db8a;
  }
  .toolbar option::checkmark {
    content: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 16 16' fill='none' stroke='%23b8c870' stroke-width='2' stroke-linecap='square' stroke-linejoin='miter'><path d='M3 8.5 L6.5 12 L13 5'/></svg>");
  }
}

/* --------------------------------------------
   Code panel — embedded, dark
----------------------------------------------- */
.code-panel {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 0.75rem;
  overflow: hidden;
  min-width: 0;
  position: relative;

  .code-panel-body {
    padding: 1rem 1.25rem;
    overflow-x: auto;

    pre {
      display: none;
      margin: 0;
      color: var(--code-text);
      font-family: var(--font-mono);
      font-size: 0.8rem;
      line-height: 1.55;
    }
  }
}

/* Show correct code block based on selected layout */
body:has(option[value="one"]:checked) .code-panel pre.one,
body:has(option[value="two"]:checked) .code-panel pre.two,
body:has(option[value="twoandahalf"]:checked) .code-panel pre.twoandahalf,
body:has(option[value="three"]:checked) .code-panel pre.three,
body:has(option[value="four"]:checked) .code-panel pre.four,
body:has(option[value="five"]:checked) .code-panel pre.five,
body:has(option[value="six"]:checked) .code-panel pre.six,
body:has(option[value="seven"]:checked) .code-panel pre.seven,
body:has(option[value="eight"]:checked) .code-panel pre.eight,
body:has(option[value="nine"]:checked) .code-panel pre.nine,
body:has(option[value="ten"]:checked) .code-panel pre.ten,
body:has(option[value="eleven"]:checked) .code-panel pre.eleven,
body:has(option[value="twelve"]:checked) .code-panel pre.twelve,
body:has(option[value="thirteen"]:checked) .code-panel pre.thirteen,
body:has(option[value="fourteen"]:checked) .code-panel pre.fourteen {
  display: block;
}

/* --------------------------------------------
   Copy button (injected into every .code-panel by universal.js)
----------------------------------------------- */
.copy-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  background: var(--code-border);
  color: #d6dde2;
  border: none;
  border-radius: 6px;
  padding: 0.3rem 0.7rem;
  font-family: -apple-system, system-ui, sans-serif;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  z-index: 2;
}
.copy-btn:hover {
  background: var(--color-accent);
  color: light-dark(#fff, #1d2e3c);
}
.copy-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}
.copy-btn.copied {
  background: var(--color-copied);
  color: #fff;
}
.copy-status {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

/* --------------------------------------------
   Hide / restore controls
----------------------------------------------- */
body.controls-hidden .toolbar { display: none; }
body.controls-hidden .ui-restore,
body.all-hidden .ui-restore { display: flex; }

body.all-hidden .toolbar,
body.all-hidden .demo-nav { display: none; }

.ui-restore {
  display: none;
  position: fixed;
  z-index: 100;
  bottom: 1rem;
  right: 1rem;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: none;
  font-size: 24px;
  cursor: pointer;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: light-dark(rgba(255, 255, 255, 0.5), rgba(40, 40, 40, 0.5));
  color: light-dark(#1d1d1f, #f5f5f7);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* --------------------------------------------
   Focus styles
----------------------------------------------- */
.demo-nav .brand:focus-visible,
.nav-links a:focus-visible,
.ui-restore:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
  border-radius: 4px;
}
.ui-hide:focus-visible,
.toolbar select:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 2px;
  border-radius: 999px;
}
.demo-nav :focus-visible {
  outline-color: var(--color-gold);
}

/* --------------------------------------------
   Responsive
----------------------------------------------- */
@media (max-width: 720px) {
  .demo-nav {
    .brand { font-size: 1.15rem; }
    .nav-links { font-size: 0.62rem; gap: 0.4rem 0.85rem; }
  }
  .toolbar {
    top: calc(var(--nav-height, 5.5rem) + 0.5rem);
    grid-template-columns: 1fr;
    padding: 0.85rem;
    border-radius: 14px;
  }
  .toolbar label > span {
    min-width: 4.5em;
  }
}

/* --------------------------------------------
   Syntax highlighting — matches home page configurator
----------------------------------------------- */
.code-panel {
  --code-sel:  #7fbff5;
  --code-prop: #ffc04d;
  --code-val:  #c8e864;
}
.code-panel .hl-selector    { color: var(--code-sel); }
.code-panel .hl-property    { color: var(--code-prop); }
.code-panel .hl-value       { color: var(--code-val); }
.code-panel .hl-function    { color: #e0a0f5; }
.code-panel .hl-number      { color: var(--code-val); }
.code-panel .hl-comment     { color: #7a8590; font-style: italic; }
.code-panel .hl-bracket     { color: var(--code-text); }
.code-panel .hl-punctuation { color: #a8b2b8; }