/* Base */
:root {
  --bg: #0f172a;      /* slate-900 */
  --panel: #111827;   /* gray-900 */
  --text: #e5e7eb;    /* gray-200 */
  --muted: #9ca3af;   /* gray-400 */
  --accent: #60a5fa;  /* blue-400 */
  --radius: 16px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(60rem 60rem at 10% -10%, #1f2937 10%, var(--bg));
  color: var(--text);
  line-height: 1.6;
}

/* Layout */
.site-header, .site-footer {
  max-width: 960px; margin: 0 auto; padding: 16px;
  display: flex; align-items: center; justify-content: space-between;
}
.site-header nav a {
  color: var(--muted); text-decoration: none; margin-left: 12px;
}
.site-header nav a:hover { color: var(--accent); }

main { max-width: 960px; margin: 0 auto; padding: 16px; }

.hero {
  padding: 48px 20px; text-align: center; border-radius: var(--radius);
  background: linear-gradient(135deg, #111827, #0b1220);
  border: 1px solid #1f2937;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.hero h2 { margin: 0 0 8px; font-size: 2rem; }
.hero p { margin: 0 0 16px; color: var(--muted); }
.btn {
  display: inline-block; padding: 10px 16px; border-radius: 999px;
  background: var(--accent); color: #0b1220; text-decoration: none; font-weight: 600;
}

.card {
  background: var(--panel); border: 1px solid #1f2937; border-radius: var(--radius);
  padding: 16px 20px; margin-top: 20px;
}
.grid {
  display: grid; gap: 16px; margin-top: 20px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.grid .card { margin: 0; }

.site-footer { color: var(--muted); justify-content: center; padding-bottom: 32px; }

/* Small tweaks for very small screens */
@media (max-width: 380px) {
  .site-header { flex-direction: column; gap: 8px; }
  .site-header nav a { margin: 0 8px; }
}