:root {
  --bg: #020617;
  --card: #020617;
  --border: #1e293b;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #38bdf8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  padding: 2rem;
  border-bottom: 1px solid var(--border);
}

header h1 {
  margin: 0;
  font-size: 1.8rem;
}

header p {
  margin-top: 0.5rem;
  color: var(--muted);
}

main.grid {
  padding: 2rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card {
  display: block;
  padding: 1.5rem;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(
    180deg,
    rgba(15, 23, 42, 0.9),
    rgba(2, 6, 23, 0.9)
  );
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.card.disabled {
  opacity: 0.5;
  pointer-events: none;
}