/* MDI companion site — shared stylesheet */

:root {
  --bg: #ffffff;
  --bg-alt: #f6f7f9;
  --text: #1c2128;
  --text-dim: #57606a;
  --border: #d8dee4;
  --accent: #1a5fb4;
  --accent-dim: #e8f0fb;
  --code-bg: #f0f2f5;
  --radius: 8px;
  --maxw: 920px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --bg-alt: #1b1f26;
    --text: #e6e8eb;
    --text-dim: #9aa4af;
    --border: #2d333b;
    --accent: #6ea8fe;
    --accent-dim: #1c2b41;
    --code-bg: #1c2128;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

header.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg-alt);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--text);
}

.brand img { height: 30px; width: 30px; }

nav.site-nav a {
  color: var(--text-dim);
  text-decoration: none;
  margin-left: 1.25rem;
  font-size: 0.95rem;
}

nav.site-nav a:hover,
nav.site-nav a.active {
  color: var(--accent);
}

main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

h1 { font-size: 2rem; margin-bottom: 0.4rem; }
h2 { font-size: 1.4rem; margin-top: 2.5rem; }
h3 { font-size: 1.1rem; margin-top: 1.75rem; }

p.lede {
  font-size: 1.15rem;
  color: var(--text-dim);
  max-width: 65ch;
}

a { color: var(--accent); }

code, pre {
  background: var(--code-bg);
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

code { padding: 0.15em 0.4em; }

pre {
  padding: 1rem;
  overflow-x: auto;
  border: 1px solid var(--border);
}

pre code { padding: 0; background: none; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
  margin-top: 1.5rem;
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  background: var(--bg-alt);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.card h3 { margin: 0; font-size: 1.05rem; }

.card p { margin: 0; color: var(--text-dim); font-size: 0.92rem; flex-grow: 1; }

.card .card-links { display: flex; gap: 0.9rem; font-size: 0.85rem; margin-top: 0.4rem; }

.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  padding: 0.2em 0.55em;
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid var(--accent);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
  font-size: 0.92rem;
}

th, td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

th { background: var(--bg-alt); }

.roadmap {
  border-left: 3px solid var(--accent);
  margin-top: 1.5rem;
  padding-left: 1.25rem;
}

.roadmap .part {
  margin-bottom: 1.4rem;
}

.roadmap .part-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
}

.roadmap .chapters { color: var(--text-dim); font-size: 0.92rem; }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
  margin-top: 1.5rem;
}

.gallery-grid figure {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-alt);
}

.gallery-grid img {
  display: block;
  width: 100%;
  height: auto;
  border-bottom: 1px solid var(--border);
}

.gallery-grid figcaption {
  padding: 0.7rem 0.9rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.note {
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  background: var(--accent-dim);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.9rem 1.1rem;
  margin: 1.5rem 0;
  font-size: 0.94rem;
}

footer.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.75rem 1.25rem;
  color: var(--text-dim);
  font-size: 0.85rem;
  text-align: center;
}

footer.site-footer a { color: var(--text-dim); }