:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #5b6472;
  --card-bg: #f4f6f8;
  --card-border: #d7dce2;
  --accent: #2f6fed;
  --accent-text: #ffffff;
  --green: #2e7d32;
  --yellow: #b8860b;
  --grey: #6b7280;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181f;
    --text: #eef1f5;
    --muted: #9aa4b2;
    --card-bg: #1c222c;
    --card-border: #2c333f;
    --accent: #5b8dff;
    --accent-text: #0b1220;
  }
}

:root[data-theme="dark"] {
  --bg: #14181f;
  --text: #eef1f5;
  --muted: #9aa4b2;
  --card-bg: #1c222c;
  --card-border: #2c333f;
  --accent: #5b8dff;
  --accent-text: #0b1220;
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #5b6472;
  --card-bg: #f4f6f8;
  --card-border: #d7dce2;
  --accent: #2f6fed;
  --accent-text: #ffffff;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Segoe UI", Verdana, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 18px;
  line-height: 1.4;
  padding: 16px;
}

h1, h2, h3 {
  line-height: 1.2;
}

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

.page {
  max-width: 960px;
  margin: 0 auto;
}

header.site-header {
  text-align: center;
  margin-bottom: 24px;
}

header.site-header h1 {
  font-size: clamp(28px, 6vw, 42px);
  margin: 0 0 4px;
}

header.site-header p {
  color: var(--muted);
  margin: 0;
  font-size: 18px;
}

.header-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}

.header-row h1 {
  grid-column: 2;
  text-align: center;
}

.header-row .theme-toggle {
  grid-column: 3;
  justify-self: end;
}

.theme-toggle {
  font-size: 20px;
  padding: 8px 12px;
  min-height: 40px;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.unit-picker {
  text-align: center;
  margin-bottom: 12px;
}

.unit-picker select {
  font-size: 16px;
  font-weight: 700;
  padding: 8px 12px;
  border-radius: 10px;
  border: 2px solid var(--card-border);
  background: var(--bg);
  color: var(--text);
  max-width: 100%;
}

.stats-line {
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 4px;
}

.games-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  align-items: start;
}

.games-grid .card {
  margin-bottom: 0;
}

.card {
  background: var(--card-bg);
  border: 2px solid var(--card-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.card h2 {
  margin-top: 0;
  font-size: 26px;
}

.card p.description {
  color: var(--muted);
  margin-top: -8px;
}

.unit-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn {
  display: inline-block;
  font-size: 20px;
  font-weight: 700;
  text-decoration: none;
  color: var(--accent-text);
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  padding: 14px 20px;
  min-height: 48px;
  cursor: pointer;
  text-align: center;
}

.btn:hover, .btn:focus {
  filter: brightness(1.08);
}

.btn.secondary {
  background: var(--card-border);
  color: var(--text);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.top-nav a {
  font-weight: 700;
  text-decoration: none;
}

.empty-note {
  color: var(--muted);
  font-style: italic;
}

@media print {
  :root, :root[data-theme="dark"], :root[data-theme="light"] {
    --bg: #ffffff !important;
    --text: #1a1a1a !important;
    --card-bg: #f4f6f8 !important;
    --card-border: #d7dce2 !important;
  }

  header.site-header, .top-nav, .btn, .theme-toggle, .stats-line {
    display: none;
  }
}