/* LUNOR WEB — Phase 4: responsive navigation, preserving the Midnight Aurora design. */
#main-header {
  gap: clamp(14px, 2vw, 28px);
  padding-inline: clamp(20px, 3vw, 56px);
}
#main-header.scrolled { padding-inline: clamp(20px, 3vw, 56px); }
#main-header .logo-container { flex: 0 0 auto; white-space: nowrap; }
#main-header nav { flex: 1 1 auto; min-width: 0; justify-content: center; }
#nav-menu { align-items: center; justify-content: center; gap: clamp(12px, 1.4vw, 24px); }
#nav-menu > li { flex: 0 0 auto; }
#nav-menu > li > a, #nav-more-toggle { white-space: nowrap; line-height: 1.35; }
#nav-menu > li.nav-extra { display: none; }
#main-header .header-actions { flex: 0 0 auto; gap: 10px; }
#header-download-btn { padding: 12px 21px; white-space: nowrap; font-size: 13px; }
#nav-more-item { position: relative; }
#nav-more-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 0;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font: 500 14px/1.35 var(--font-ui);
  cursor: pointer;
}
#nav-more-toggle:hover, #nav-more-toggle[aria-expanded='true'] { color: var(--luminous-white); }
#nav-more-toggle svg { transition: transform .2s ease; }
#nav-more-toggle[aria-expanded='true'] svg { transform: rotate(180deg); }
#nav-more-list {
  display: none;
  position: absolute;
  top: calc(100% + 15px);
  right: -20px;
  width: min(260px, 90vw);
  padding: 10px;
  margin: 0;
  flex-direction: column;
  align-items: stretch;
  gap: 2px;
  background: rgba(7, 15, 30, .98);
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  box-shadow: 0 18px 44px rgba(0, 0, 0, .55);
  z-index: 1100;
}
#nav-more-list.show { display: flex; }
#nav-more-list a { display: block; padding: 10px 12px; border-radius: 9px; font-size: 13px; }
#nav-more-list a:hover, #nav-more-list a.active { background: rgba(158,201,255,.09); }
#nav-more-list a::after { display: none; }
#nav-more-toggle:focus-visible, #mobile-toggle:focus-visible { outline: 2px solid var(--accent-primary); outline-offset: 3px; }

@media (max-width: 1450px) {
  #main-header { gap: 14px; }
  #main-header .logo-container { gap: 9px; }
  #main-header .logo-badge { display: none; }
  #main-header .header-actions { gap: 7px; }
  #header-download-btn { padding: 10px 13px; }
  #nav-menu { gap: 14px; }
  #cmd-trigger-btn .cmd-key { display: none; }
}
@media (max-width: 1250px) {
  #main-header { padding: 12px 22px; justify-content: space-between; }
  #main-header.scrolled { padding: 10px 22px; }
  #main-header nav { flex: 0 0 0; min-width: 0; }
  #nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    width: 100%;
    max-height: calc(100dvh - 75px);
    overflow-y: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 3px;
    padding: 14px clamp(16px, 4vw, 42px) 20px;
    background: rgba(2, 5, 10, .99);
    border-bottom: 1px solid var(--border-glow);
    box-shadow: 0 18px 36px rgba(0,0,0,.6);
    z-index: 1100;
  }
  #nav-menu.show { display: flex; }
  #nav-menu > li { display: block; }
  #nav-menu > li.nav-extra { display: block; }
  #nav-menu > li#nav-more-item { display: none; }
  #nav-menu > li > a { display: block; padding: 11px 12px; border-radius: 9px; font-size: 14px; }
  #nav-menu > li > a:hover, #nav-menu > li > a.active { background: rgba(158, 201, 255, .09); }
  #nav-menu > li > a::after { display: none; }
  #main-header .mobile-menu-btn { display: flex; align-items: center; justify-content: center; width: 38px; height: 38px; flex: 0 0 auto; border: 1px solid var(--border-subtle); border-radius: 10px; }
  #main-header .mobile-menu-btn[aria-expanded='true'] { background: rgba(158,201,255,.15); border-color: var(--accent-primary); }
}
@media (max-width: 768px) {
  #main-header .header-actions { gap: 8px; }
  #main-header .theme-picker-group, #main-header #cmd-trigger-btn { display: none; }
  #main-header .logo-badge { display: none; }
  #main-header #header-download-btn { padding: 10px 13px; }
}
@media (max-width: 480px) {
  #main-header { padding: 12px 14px; gap: 6px; }
  #main-header.scrolled { padding: 9px 14px; }
  #main-header .logo-icon-mark { width: 29px; height: 29px; }
  #main-header .logo-text { font-size: 18px; letter-spacing: 2px; }
  #main-header .logo-container { gap: 7px; }
  #main-header .header-actions { gap: 7px; }
  #main-header #ambient-audio-toggle { display: none; }
  #main-header #header-download-btn { font-size: 11px; padding: 9px 10px; }
  #main-header #header-download-btn svg { width: 13px; }
  #main-header .mobile-menu-btn { width: 35px; height: 35px; }
}
@media (max-width: 350px) {
  #main-header #header-download-btn svg { display: none; }
  #main-header .logo-text { font-size: 16px; }
  #main-header { padding-inline: 10px; }
  #main-header.scrolled { padding-inline: 10px; }
}