/* GeoSort docs — foglio di stile condiviso (IT + EN) */

:root {
  --accent: #2c5f8a;
  --accent-light: #eaf4fb;
  --accent-border: #c0d8ee;
  --warn-bg: #fff8e1;
  --warn-border: #f0a500;
  --text: #202225;
  --text-muted: #55606b;
  --bg: #ffffff;
  --bg-alt: #f6f8fa;
  --code-bg: #f0f0f0;
  --border: #e2e6ea;
  --card-bg: #ffffff;
  --card-shadow: 0 1px 3px rgba(20, 30, 40, 0.08);
  --maxw: 1100px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --accent: #6fb1e6;
    --accent-light: #14283a;
    --accent-border: #204a6e;
    --warn-bg: #3a2f10;
    --warn-border: #d99a1f;
    --text: #e8eaed;
    --text-muted: #a7b0b9;
    --bg: #14171a;
    --bg-alt: #1b1f24;
    --code-bg: #23272b;
    --border: #2a2f35;
    --card-bg: #1b1f24;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

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

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header.hero {
  background: linear-gradient(180deg, var(--accent-light), var(--bg));
  border-bottom: 1px solid var(--border);
  padding: 28px 0 22px;
}

header.hero h1 {
  margin: 0 0 6px;
  font-size: 1.9rem;
  color: var(--accent);
}

header.hero p.tagline {
  margin: 0 0 14px;
  color: var(--text-muted);
  font-size: 1.05rem;
}

.langswitch {
  font-size: 0.9rem;
}

.badges { margin: 14px 0 0; display: flex; gap: 8px; flex-wrap: wrap; }
.badges img { height: 20px; }

/* Layout: sidebar + content */
.layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 32px;
  align-items: start;
  padding: 28px 0 60px;
}

nav.toc {
  position: sticky;
  top: 16px;
  font-size: 0.88rem;
  max-height: calc(100vh - 32px);
  overflow-y: auto;
}

nav.toc h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin: 16px 0 6px;
}
nav.toc h2:first-child { margin-top: 0; }

nav.toc ul { list-style: none; margin: 0 0 4px; padding: 0; }
nav.toc li { margin: 2px 0; }
nav.toc a {
  display: block;
  padding: 3px 8px;
  border-radius: 5px;
  text-decoration: none;
  color: var(--text);
}
nav.toc a:hover { background: var(--accent-light); color: var(--accent); }

main { min-width: 0; }

main h2 {
  color: var(--accent);
  border-bottom: 1px solid var(--accent-border);
  padding-bottom: 6px;
  margin-top: 44px;
  scroll-margin-top: 16px;
}

main h3 {
  scroll-margin-top: 16px;
  margin-top: 28px;
}

main h4 { margin-bottom: 4px; }

code, pre {
  background: var(--code-bg);
  border-radius: 4px;
  font-size: 0.85em;
}
code { padding: 1px 5px; }
pre {
  padding: 12px 14px;
  overflow-x: auto;
  border: 1px solid var(--border);
}
pre code { background: none; padding: 0; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
  font-size: 0.92rem;
}
th, td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  text-align: left;
  vertical-align: top;
}
th { background: var(--bg-alt); }

.tip, .warn {
  padding: 10px 14px;
  margin: 14px 0;
  border-radius: 3px;
  font-size: 0.92rem;
}
.tip  { background: var(--accent-light); border-left: 3px solid var(--accent); }
.warn { background: var(--warn-bg); border-left: 3px solid var(--warn-border); }

/* Criterion cards */
.criterion {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px 20px;
  margin: 18px 0;
  box-shadow: var(--card-shadow);
}
.criterion h3 { margin-top: 0; }
.criterion .params { font-size: 0.88rem; color: var(--text-muted); }
.criterion .params code { color: var(--text); }
.usecase {
  margin-top: 10px;
  padding: 8px 12px;
  background: var(--bg-alt);
  border-radius: 5px;
  font-size: 0.9rem;
}
.usecase b { color: var(--accent); }

/* Screenshots */
figure.shot {
  margin: 14px 0;
  text-align: center;
}
figure.shot img {
  max-width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: var(--card-shadow);
}
figure.shot figcaption {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 6px;
}
figure.shot.missing {
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 30px 16px;
  background: var(--bg-alt);
}
figure.shot.missing img { display: none; }
figure.shot.missing figcaption::before {
  content: "🖼 ";
}

.shot-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 640px) {
  .shot-pair { grid-template-columns: 1fr; }
}

.pill {
  display: inline-block;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--accent);
  margin-left: 6px;
  vertical-align: middle;
}

footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 40px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  nav.toc {
    position: static;
    max-height: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 12px;
    margin-bottom: 8px;
  }
}