/* ── Nav ─────────────────────────────────────────────────────────────────────── */
nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.5px;
}
.brand:hover { text-decoration: none; }

.nav-links { display: flex; gap: 24px; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 500; }
.nav-links a.active,
.nav-links a:hover { color: var(--text); }
.nav-links button {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
  padding: 4px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 500;
}
.nav-links button:hover { color: var(--text); border-color: var(--text); }

/* ── Main content area ────────────────────────────────────────────────────────── */
main {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* ── Page header ─────────────────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.page-header h1 { font-size: 20px; font-weight: 600; }