:root {
  --bg: #f8fafc;
  --fg: #0f172a;
  --muted: #64748b;
  --card-bg: #ffffff;
  --border: #e2e8f0;
  --accent: #6366f1;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --fg: #e2e8f0;
    --muted: #94a3b8;
    --card-bg: #131c2e;
    --border: #1e293b;
    --accent: #818cf8;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  padding: 3rem 1.5rem 1rem;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 1rem;
}

.grid {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  padding: 1.5rem;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

.card {
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(15, 23, 42, 0.08), 0 16px 32px rgba(15, 23, 42, 0.1);
}

.card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--border);
  display: block;
}

.card-body {
  padding: 1rem 1.1rem 1.25rem;
}

.card-body h2 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.card-body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.4;
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 3rem 1.5rem;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  padding: 1.5rem;
}