/* ============================================================
   Theme commun — Jeux pédagogiques serveur TSSR
   Esthétique "terminal réseau" : sombre, monospace, accents cyan/vert.
   ============================================================ */

:root {
  --bg: #0b0f14;
  --bg-raised: #121821;
  --bg-card: #161d27;
  --border: #263241;
  --border-hover: #3a4d63;
  --text: #e6edf3;
  --text-dim: #93a4b8;
  --text-faint: #5b6b7f;
  --accent: #4ee1a0;
  --accent-dim: #2b8f66;
  --accent-2: #5ec8ff;
  --warn: #ffb454;
  --danger: #ff6b6b;
  --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "Cascadia Code", "Fira Code", ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  --radius: 10px;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  min-height: 100%;
}

body {
  background-image:
    radial-gradient(circle at 15% 0%, rgba(78, 225, 160, 0.06), transparent 40%),
    radial-gradient(circle at 85% 20%, rgba(94, 200, 255, 0.05), transparent 45%);
  background-attachment: fixed;
}

code, pre, .mono {
  font-family: var(--font-mono);
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

img { max-width: 100%; }

/* ---------- Layout shell ---------- */

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .brand {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
}

.site-header .brand .prompt {
  color: var(--accent);
}

.site-header nav a {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-left: 1.2rem;
}

.site-header nav a:hover { color: var(--text); }

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}
.back-link:hover { color: var(--accent-2); text-decoration: none; }

/* ---------- Hero ---------- */

.hero {
  padding: 2.5rem 0 1.5rem;
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 0.6rem;
  letter-spacing: -0.02em;
}

.hero .accent { color: var(--accent); }

.hero p {
  color: var(--text-dim);
  font-size: 1.05rem;
  max-width: 640px;
  line-height: 1.55;
  margin: 0;
}

/* ---------- Category sections ---------- */

.category {
  margin-top: 2.8rem;
}

.category-heading {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin-bottom: 1.1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
}

.category-heading h2 {
  font-size: 1.2rem;
  margin: 0;
  color: var(--text);
}

.category-heading .count {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
}

.category-desc {
  color: var(--text-faint);
  font-size: 0.9rem;
  margin: -0.4rem 0 1.1rem;
}

/* ---------- Cards grid ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.card-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.card h3 {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text);
}

.card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.88rem;
  line-height: 1.5;
  flex: 1;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.3rem;
}

.card-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-2);
}

.card.disabled {
  opacity: 0.55;
}
.card.disabled:hover {
  transform: none;
  box-shadow: none;
  border-color: var(--border);
}

/* ---------- Badges ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  white-space: nowrap;
}

.badge-available {
  color: var(--accent);
  border-color: var(--accent-dim);
  background: rgba(78, 225, 160, 0.08);
}

.badge-soon {
  color: var(--text-faint);
  background: rgba(255, 255, 255, 0.03);
}

.badge-progress {
  color: var(--warn);
  border-color: rgba(255, 180, 84, 0.4);
  background: rgba(255, 180, 84, 0.08);
}

/* ---------- Placeholder game page ---------- */

.placeholder {
  margin-top: 3rem;
  padding: 2.5rem;
  border: 1px dashed var(--border-hover);
  border-radius: var(--radius);
  background: var(--bg-raised);
  text-align: center;
}

.placeholder .big-icon {
  font-size: 2.4rem;
  margin-bottom: 0.8rem;
}

.placeholder h2 {
  margin: 0 0 0.6rem;
}

.placeholder p {
  color: var(--text-dim);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.55;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.82rem;
}