/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #fafafa;
  --bg-alt: #f3f4f6;
  --nav-bg: #111827;
  --text: #1f2937;
  --text-muted: #6b7280;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --border: #e5e7eb;
  --code-bg: #1e1e2e;
  --code-text: #cdd6f4;
  --red-banner: #dc2626;
  --radius: 8px;
  --nav-h: 56px;
  --banner-h: 44px;
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + var(--banner-h) + 24px); }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

code, pre, .mono { font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace; }

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

/* ── Red Banner ── */
.unavailable-banner {
  position: sticky;
  top: 0;
  z-index: 1001;
  background: var(--red-banner);
  color: #fff;
  text-align: center;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  line-height: 1.4;
}

/* ── Nav ── */
.nav {
  position: sticky;
  top: var(--banner-h);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  padding: 0 24px;
  background: var(--nav-bg);
  color: #fff;
}

.nav-logo {
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo span { color: var(--accent); }

.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a {
  color: #d1d5db;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: color .15s;
}
.nav-links a:hover, .nav-links a.active { color: #fff; }

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ── Utilities ── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-method { background: #dbeafe; color: #1e40af; }
.badge-property { background: #fef3c7; color: #92400e; }

button, .btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, opacity .15s;
}

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-danger { background: #dc2626; color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-secondary { background: var(--bg-alt); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

button:disabled, .btn:disabled { opacity: .4; cursor: not-allowed; }

input, select, textarea {
  font-family: inherit;
  font-size: 0.85rem;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border-color .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-hamburger { display: block; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--nav-bg);
    padding: 16px 24px;
    gap: 12px;
  }
}