/* GridKit site. Plain, dark-mode aware, no framework. */

:root {
  --green-200: #a7f3d0;
  --green-400: #34d399;
  --green-500: #10b981;
  --green-600: #059669;
  --green-700: #047857;
  --ink-900: #0f172a;
  --ink-700: #334155;
  --ink-600: #475569;
  --ink-400: #94a3b8;
  --ink-200: #e2e8f0;
  --bg: #ffffff;
  --bg-soft: #f8fafc;
  --border: #e2e8f0;
  --max-w: 900px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink-900: #f8fafc;
    --ink-700: #cbd5e1;
    --ink-600: #94a3b8;
    --ink-400: #64748b;
    --ink-200: #334155;
    --bg: #0b1220;
    --bg-soft: #0f172a;
    --border: #1e293b;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-700);
  background: var(--bg);
}

a { color: var(--green-600); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 {
  color: var(--ink-900);
  margin: 0 0 .6em;
}
h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); line-height: 1.15; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.1rem; }

p { margin: 0 0 1em; }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

header.site {
  border-bottom: 1px solid var(--border);
}
header.site .container {
  display: flex;
  align-items: center;
  height: 60px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-900);
  font-weight: 700;
  font-size: 1.05rem;
}
.brand:hover { text-decoration: none; }
.brand svg { width: 26px; height: 26px; }

/* Landing */

section.hero {
  padding: 56px 0 48px;
}
section.hero .lede {
  font-size: 1.1rem;
  color: var(--ink-600);
  max-width: 620px;
  margin-bottom: 32px;
}
.availability {
  margin-top: 28px;
  max-width: 620px;
  color: var(--ink-600);
}

/* Heatmap */

.heatmap {
  display: grid;
  grid-template-columns: repeat(52, 1fr);
  gap: 3px;
  max-width: 680px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.heatmap .col {
  display: grid;
  grid-template-rows: repeat(7, 1fr);
  gap: 3px;
}
.heatmap .cell {
  aspect-ratio: 1;
  border-radius: 2px;
  background: var(--ink-200);
}
.heatmap .cell.l1 { background: var(--green-200); }
.heatmap .cell.l2 { background: var(--green-400); }
.heatmap .cell.l3 { background: var(--green-500); }
.heatmap .cell.l4 { background: var(--green-700); }

/* Footer */

footer.site {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  color: var(--ink-400);
  font-size: 0.92rem;
}
footer.site .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
footer.site nav {
  display: flex;
  gap: 18px;
}
footer.site nav a { color: var(--ink-600); }

/* Text pages (privacy, terms, support) */

article.legal {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}
article.legal h1 { margin-bottom: 12px; }
article.legal .updated {
  color: var(--ink-400);
  font-size: 0.92rem;
  margin-bottom: 36px;
}
article.legal h2 { margin-top: 36px; font-size: 1.3rem; }
article.legal h3 { margin-top: 24px; font-size: 1.05rem; }
article.legal ul, article.legal ol {
  padding-left: 22px;
  margin: 0 0 1em;
}
article.legal li { margin-bottom: 6px; }
article.legal code {
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 0.9em;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 4px;
}