/* Shared layout/styles for docs/reference-sheets/*.html */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'IBM Plex Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.45;
  padding: 12px;
  min-height: 100vh;
  transition: background 0.2s, color 0.2s;
}

header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--accent);
  flex-wrap: wrap;
}

header h1 { font-size: 17px; font-weight: 600; letter-spacing: -0.3px; }

.badge {
  font-size: 11px;
  font-weight: 500;
  background: var(--accent);
  color: #fff;
  padding: 1px 7px;
  border-radius: 2px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.spacer { flex: 1; }

/* Links (used by landing page) */
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Palette picker */
.palettes { display: flex; gap: 5px; align-items: center; }
.palettes span {
  font-size: 10px;
  color: var(--muted);
  margin-right: 3px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.palettes .header-link {
  margin-left: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
}
.palettes .header-link:hover { border-color: var(--text); }
.palettes .header-link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.swatch {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s, border-color 0.15s;
}
.swatch:hover { transform: scale(1.15); }
.swatch.active { border-color: var(--text); }

nav { display: flex; gap: 4px; margin-bottom: 10px; flex-wrap: wrap; }
nav button {
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 11px;
  font-weight: 500;
  padding: 3px 9px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  border-radius: 3px;
  transition: all 0.12s;
}
nav button.active {
  background: var(--tab-active-bg);
  color: var(--tab-active-fg);
  border-color: var(--tab-active-bg);
}
nav button:hover:not(.active) { border-color: var(--text); color: var(--text); }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.grid.two-col { grid-template-columns: repeat(2, 1fr); }
.grid.four-col { grid-template-columns: repeat(4, 1fr); }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 8px 10px; }
.card.span2 { grid-column: span 2; }
.card.span3 { grid-column: span 3; }

.card-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--muted);
  margin-bottom: 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

pre, code { font-family: 'IBM Plex Mono', monospace; font-size: 11px; line-height: 1.6; }
pre {
  background: var(--code-bg);
  border-radius: 3px;
  padding: 6px 8px;
  overflow-x: auto;
  white-space: pre;
  margin-bottom: 6px;
}
pre:last-child { margin-bottom: 0; }

.kw { color: var(--keyword); font-weight: 600; }
.ty { color: var(--type); }
.st { color: var(--string); }
.cm { color: var(--comment); font-style: italic; }
.fn { color: var(--fn); }

table { width: 100%; border-collapse: collapse; font-size: 11px; }
th {
  text-align: left;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  padding: 3px 5px;
  border-bottom: 1px solid var(--border);
}
td { padding: 3px 5px; border-bottom: 1px solid var(--border); vertical-align: top; opacity: 0.9; }
td code { background: var(--code-bg); padding: 1px 4px; border-radius: 2px; font-size: 10px; }
tr:last-child td { border-bottom: none; }

.tip {
  font-size: 11px;
  color: var(--muted);
  background: var(--tip-bg);
  border-left: 2px solid var(--tip-border);
  padding: 4px 7px;
  border-radius: 0 3px 3px 0;
  margin-top: 5px;
}

.section { display: none; }
.section.active { display: block; }