/* ===== Spieltheorie – Seriöses, elegantes Design ===== */

:root {
  --c-primary: #3d2b5e;
  --c-accent: #b08d57;
  --c-text: #2b2b2b;
  --c-muted: #6b6b6b;
  --c-bg: #f7f5f0;
  --c-surface: #ffffff;
  --c-border: #e3ddd2;
  --c-code-bg: #f0ece3;
  --shadow: 0 4px 18px rgba(27, 42, 74, 0.08);
  --radius: 6px;
  --max-width: 820px;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Header ---------- */
.site-header {
  background: var(--c-primary);
  color: #fff;
  padding: 2.4rem 1rem 2rem;
  text-align: center;
  border-bottom: 3px solid var(--c-accent);
}

.site-header h1 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 2.1rem;
  font-weight: 400;
  letter-spacing: 0.5px;
}

.site-header .subtitle {
  margin-top: 0.4rem;
  font-size: 0.95rem;
  color: #d8d2c4;
  font-style: italic;
}

/* ---------- Navigation ---------- */
.site-nav {
  background: #fff;
  border-bottom: 1px solid var(--c-border);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

.site-nav ul {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: var(--max-width);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.site-nav a {
  display: block;
  padding: 0.85rem 1.1rem;
  color: var(--c-primary);
  text-decoration: none;
  font-size: 0.92rem;
  letter-spacing: 0.3px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

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

/* ---------- Layout ---------- */
main {
  max-width: var(--max-width);
  margin: 2.5rem auto;
  padding: 0 1.5rem 4rem;
  background: var(--c-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding-top: 2.5rem;
}

article { padding-bottom: 1rem; }

h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  color: var(--c-primary);
  font-size: 1.7rem;
  margin: 2.2rem 0 0.8rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--c-border);
}

h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--c-primary);
  font-size: 1.25rem;
  margin: 1.8rem 0 0.5rem;
}

p { margin: 0.8rem 0; }

.lead {
  font-size: 1.12rem;
  color: var(--c-muted);
  font-style: italic;
  border-left: 3px solid var(--c-accent);
  padding-left: 1rem;
  margin: 1.5rem 0;
}

strong { color: var(--c-primary); }

a { color: var(--c-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

ul, ol { padding-left: 1.4rem; }
li { margin: 0.4rem 0; }

/* ---------- Tabellen ---------- */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  background: #fff;
  box-shadow: 0 2px 6px rgba(0,0,0,0.05);
  border-radius: var(--radius);
  overflow: hidden;
}

th, td {
  border: 1px solid var(--c-border);
  padding: 0.7rem 0.9rem;
  text-align: center;
}

th {
  background: var(--c-primary);
  color: #fff;
  font-weight: 600;
}

td:first-child {
  background: var(--c-code-bg);
  font-weight: 600;
  text-align: left;
  color: var(--c-primary);
}

/* ---------- Code / Formeln ---------- */
code, .formula {
  font-family: 'Menlo', 'Consolas', monospace;
  background: var(--c-code-bg);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-size: 0.9rem;
}

.formula {
  display: block;
  margin: 1rem 0;
  padding: 1rem;
  text-align: center;
  font-size: 1rem;
  border-left: 3px solid var(--c-accent);
}

/* ---------- Hinweisbox ---------- */
.callout {
  background: #f4f1ea;
  border-left: 4px solid var(--c-accent);
  padding: 1rem 1.2rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.callout p:last-child { margin-bottom: 0; }

/* ---------- Seitennavigation ---------- */
.pager {
  display: flex;
  justify-content: space-between;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-border);
  gap: 1rem;
}

.pager a {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  background: var(--c-primary);
  color: #fff;
  border-radius: var(--radius);
  font-size: 0.9rem;
  transition: background 0.2s;
}

.pager a:hover { background: var(--c-accent); text-decoration: none; }
.pager .disabled { visibility: hidden; }

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  padding: 1.5rem 1rem 2.5rem;
  color: var(--c-muted);
  font-size: 0.85rem;
}

.site-footer a { color: var(--c-muted); }

/* ---------- Karten (Übersicht) ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.2rem;
  margin: 1.8rem 0;
}

.card {
  background: #fbf9f4;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.3rem 1.2rem;
  transition: transform 0.15s, box-shadow 0.15s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  text-decoration: none;
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
  color: var(--c-primary);
}

.card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--c-muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .site-header h1 { font-size: 1.6rem; }
  main { padding: 1.8rem 1rem 2rem; }
  .pager { flex-direction: column; }
  .pager a { text-align: center; }
}