/* ============================================================
   HBCU AID — Shared Mobile Navigation Menu
   Injected on all pages via server.js
   ============================================================ */

/* --- Hamburger Button --- */
.mobile-hamburger {
  display: none;
  background: none;
  border: 1px solid var(--dark-border, #252525);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  z-index: 1001;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  min-width: 44px;
  min-height: 44px;
  -webkit-tap-highlight-color: transparent;
  transition: border-color 0.2s;
}

.mobile-hamburger:hover,
.mobile-hamburger:focus-visible {
  border-color: var(--gold, #FFB800);
  outline: 2px solid var(--gold, #FFB800);
  outline-offset: 2px;
}

.mobile-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary, #F5F5F5);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

/* Hamburger → X animation */
.mobile-hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --- Mobile Overlay --- */
.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* --- Mobile Drawer --- */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100%;
  background: var(--dark-bg, #0A0A0A);
  border-left: 1px solid var(--dark-border, #252525);
  z-index: 1000;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0) 0;
}

.mobile-nav-drawer.active {
  transform: translateX(0);
}

.mobile-nav-drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--dark-border, #252525);
  flex-shrink: 0;
}

.mobile-nav-drawer-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--gold, #FFB800);
  text-shadow: 0 0 20px rgba(255, 184, 0, 0.3);
}

.mobile-nav-close {
  background: none;
  border: 1px solid var(--dark-border, #252525);
  border-radius: 8px;
  color: var(--text-secondary, #A3A3A3);
  cursor: pointer;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav-close:hover,
.mobile-nav-close:focus-visible {
  border-color: var(--gold, #FFB800);
  color: var(--gold, #FFB800);
  outline: 2px solid var(--gold, #FFB800);
  outline-offset: 2px;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  padding: 16px 0;
  flex: 1;
}

.mobile-nav-links a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  color: var(--text-secondary, #A3A3A3);
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  font-family: 'DM Sans', sans-serif;
  transition: all 0.2s;
  min-height: 48px;
  border-left: 3px solid transparent;
}

.mobile-nav-links a:hover,
.mobile-nav-links a:focus-visible {
  color: var(--gold, #FFB800);
  background: rgba(255, 184, 0, 0.05);
  border-left-color: var(--gold, #FFB800);
}

.mobile-nav-links a.active {
  color: var(--gold, #FFB800);
  background: rgba(255, 184, 0, 0.08);
  border-left-color: var(--gold, #FFB800);
  font-weight: 600;
}

.mobile-nav-links a.mobile-nav-highlight {
  color: var(--gold, #FFB800);
  font-weight: 600;
}

.mobile-nav-divider {
  height: 1px;
  background: var(--dark-border, #252525);
  margin: 8px 24px;
}

.mobile-nav-drawer-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--dark-border, #252525);
  flex-shrink: 0;
}

.mobile-nav-theme-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--dark-card, #151515);
  border: 1px solid var(--dark-border, #252525);
  border-radius: 10px;
  color: var(--text-secondary, #A3A3A3);
  font-size: 14px;
  font-family: 'DM Sans', sans-serif;
  cursor: pointer;
  width: 100%;
  min-height: 48px;
  transition: all 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav-theme-toggle:hover,
.mobile-nav-theme-toggle:focus-visible {
  border-color: var(--gold, #FFB800);
  color: var(--text-primary, #F5F5F5);
  outline: 2px solid var(--gold, #FFB800);
  outline-offset: 2px;
}

/* --- Skip Navigation Link (Accessibility) --- */
.skip-nav {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--gold, #FFB800);
  color: #000;
  padding: 12px 24px;
  border-radius: 0 0 8px 8px;
  font-weight: 600;
  font-size: 14px;
  z-index: 10000;
  transition: top 0.2s;
  text-decoration: none;
}

.skip-nav:focus {
  top: 0;
}

/* --- Show hamburger on mobile, hide desktop nav --- */
@media (max-width: 768px) {
  .mobile-hamburger {
    display: flex;
  }

  /* Hide ALL desktop nav-links on mobile (universal override) */
  header .nav-links,
  .header-content > .nav-links,
  nav.nav-links,
  nav > .nav-links,
  nav > ul.nav-links,
  .nav-inner > .nav-links,
  .nav-links:not(.mobile-nav-links) {
    display: none !important;
  }

  /* Also hide any existing mobile-menu-btn from individual pages (we use our shared one) */
  .mobile-menu-btn,
  .nav-toggle {
    display: none !important;
  }

  /* Hide desktop theme toggles on mobile (theme control is in the drawer) */
  .theme-toggle {
    display: none !important;
  }
}

/* --- Prevent body scroll when menu open --- */
body.mobile-menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
  height: 100%;
}

/* Hide Miss Legacy chatbot FAB when mobile nav is open (prevent z-index overlap) */
body.mobile-menu-open #ml-launcher {
  display: none !important;
}

/* --- Light mode support --- */
body.light-mode .mobile-nav-drawer {
  background: #FFFFFF;
  border-left-color: #E5E7EB;
}

body.light-mode .mobile-hamburger {
  border-color: #E5E7EB;
}

body.light-mode .mobile-hamburger span {
  background: #111827;
}

body.light-mode .mobile-nav-drawer-header {
  border-bottom-color: #E5E7EB;
}

body.light-mode .mobile-nav-links a {
  color: #6B7280;
}

body.light-mode .mobile-nav-links a:hover,
body.light-mode .mobile-nav-links a:focus-visible,
body.light-mode .mobile-nav-links a.active {
  color: #D97706;
  background: rgba(255, 184, 0, 0.05);
  border-left-color: #D97706;
}

body.light-mode .mobile-nav-close {
  border-color: #E5E7EB;
  color: #6B7280;
}

body.light-mode .mobile-nav-theme-toggle {
  background: #F9FAFB;
  border-color: #E5E7EB;
  color: #6B7280;
}

body.light-mode .mobile-nav-overlay {
  background: rgba(0, 0, 0, 0.3);
}

/* --- Focus visible fallback --- */
@supports not selector(:focus-visible) {
  .mobile-hamburger:focus,
  .mobile-nav-close:focus,
  .mobile-nav-links a:focus,
  .mobile-nav-theme-toggle:focus {
    outline: 2px solid var(--gold, #FFB800);
    outline-offset: 2px;
  }
}