/* Ensure header is always visible */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg, #0b0e13);
}

/* Provide space below sticky header and avoid first-child margin collapse */
main#main {
  padding-top: 24px;
}
main#main > *:first-child {
  margin-top: 0;
}

/* Mobile drawer above content */
.mobile-nav { z-index: 1100; }

/* Disable native smooth-scroll for jumps (we use full page loads anyway) */
html { scroll-behavior: auto !important; }

/* Optional: highlight current nav */
.nav a.active { text-decoration: underline; }