/* ================================================================
   GeoHub — Navbar & Navigation
   ================================================================ */

/* ======================== NAVBAR ======================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  padding: 0 var(--sp-6);
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(4,5,13,0.88);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-subtle);
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(4,5,13,0.97);
  border-bottom-color: var(--border);
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: -0.5px;
}
.navbar-brand .logo-icon {
  width: 34px;
  height: 34px;
  background: var(--gradient-brand);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--shadow-green);
}
.navbar-brand .logo-text {
  color: var(--text-primary);
}
.navbar-brand .logo-geo {
  color: var(--green);
}
.navbar-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.navbar-links a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}
.navbar-links a:hover,
.navbar-links a.active {
  color: var(--text-primary);
  background: var(--bg-elevated);
}
.navbar-links a.active {
  color: var(--green);
}
.nav-leaf a,
.nav-dropdown {
  position: relative;
}
.nav-menu-trigger {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.nav-menu-trigger i {
  font-size: 0.65rem;
  transition: transform 0.2s ease;
}
.nav-dropdown:hover .nav-menu-trigger,
.nav-dropdown.open .nav-menu-trigger,
.nav-dropdown.active .nav-menu-trigger {
  color: var(--text-primary);
  background: var(--bg-elevated);
}
.nav-dropdown.active .nav-menu-trigger {
  color: var(--green);
}
.nav-dropdown:hover .nav-menu-trigger i,
.nav-dropdown.open .nav-menu-trigger i {
  transform: rotate(180deg);
}
.nav-dropdown-panel {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  min-width: 220px;
  padding: 10px;
  border-radius: var(--radius-lg);
  background: rgba(17, 24, 39, 0.98);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s;
}
.nav-dropdown-panel::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: -12px;
  height: 12px;
}
.nav-dropdown:hover .nav-dropdown-panel,
.nav-dropdown.open .nav-dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown-title {
  padding: 6px 10px 8px;
  font-size: 0.68rem;
  font-weight: 800;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}
.nav-dropdown-panel a {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}
.nav-dropdown-panel a i {
  width: 15px;
  color: var(--green);
  font-size: 0.78rem;
}
.nav-dropdown-panel a:hover,
.nav-dropdown-panel a.active {
  color: var(--text-primary);
  background: var(--bg-elevated);
}
.nav-dropdown-panel a.active {
  color: var(--green-light);
}
.navbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.navbar-actions .btn-ghost-nav {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}
.navbar-actions .btn-ghost-nav:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}
.navbar-actions .nav-profile-icon {
  width: 38px;
  height: 38px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.navbar-actions .nav-profile-icon i {
  font-size: 1.1rem;
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  border-radius: var(--radius-sm);
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: var(--transition);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 68px;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  flex-direction: column;
  overflow-y: auto;
  padding: 16px 24px 80px;
  background: #0a0b14;
  background: var(--bg-1, #0a0b14);
  border-top: 1px solid rgba(255,255,255,0.08);
  z-index: 99999;
}
.mobile-menu.open {
  display: flex !important;
}
.mobile-menu a {
  display: flex !important;
  align-items: center;
  padding: 12px 14px !important;
  border-radius: var(--radius-sm, 8px);
  font-size: 0.95rem !important;
  font-weight: 500 !important;
  color: #c0c8d8 !important;
  color: var(--text-secondary, #c0c8d8) !important;
  opacity: 1 !important;
  visibility: visible !important;
  pointer-events: auto !important;
  transition: var(--transition);
  text-decoration: none;
}
.mobile-menu a:hover,
.mobile-menu a.active {
  color: #f0f4ff !important;
  color: var(--text-primary, #f0f4ff) !important;
  background: rgba(255,255,255,0.07) !important;
  background: var(--bg-elevated, rgba(255,255,255,0.07)) !important;
}
.mobile-menu a.active {
  color: #10b981 !important;
  color: var(--green, #10b981) !important;
}
.mobile-menu .mobile-cta {
  margin-top: 12px;
  display: flex;
  gap: 10px;
}
.mobile-menu-group {
  display: flex !important;
  flex-direction: column !important;
  padding: 8px 0 12px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid var(--border-subtle, rgba(255,255,255,0.06));
}
.mobile-menu-group:last-child {
  border-bottom: 0;
}
.mobile-menu-title {
  display: block !important;
  padding: 8px 14px 4px;
  font-size: 0.68rem;
  font-weight: 800;
  color: #6b7280;
  color: var(--text-muted, #6b7280);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  opacity: 1 !important;
  visibility: visible !important;
}
.mobile-menu-group a {
  display: flex !important;
  align-items: center;
  gap: 10px;
}
.mobile-menu-group a i {
  display: inline-block !important;
  width: 16px;
  color: #10b981 !important;
  color: var(--green, #10b981) !important;
  font-size: 0.8rem;
  opacity: 1 !important;
}

/* Hamburger animation when open */
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.hamburger span { transition: transform 0.25s ease, opacity 0.2s ease; }

@media (max-width: 768px) {
  .navbar-links,
  .navbar-actions {
    display: none !important;
  }
  .hamburger {
    display: flex !important;
  }
}

/* ================================================================
   AUTH SYSTEM — Shared styles (nav dropdown, modals, settings)
   ================================================================ */

/* ── Auth Nav User (desktop navbar) ── */
.auth-nav-user {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 4px 10px 4px 4px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: border-color 0.2s, background 0.2s;
  user-select: none;
}
.auth-nav-user:hover { border-color: var(--border); background: var(--bg-elevated); }
.auth-nav-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--green);
  flex-shrink: 0;
}
.auth-nav-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  max-width: 100px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.auth-nav-caret {
  font-size: 0.6rem;
  color: var(--text-muted);
  transition: transform 0.2s;
}
.auth-nav-dropdown.open ~ * .auth-nav-caret,
.auth-nav-user:has(.auth-nav-dropdown.open) .auth-nav-caret { transform: rotate(180deg); }

.auth-nav-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 210px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 6px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.2s, transform 0.2s;
  z-index: 1500;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}
.auth-nav-dropdown.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.auth-dd-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  background: none;
  border: none;
  width: 100%;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  text-align: left;
  font-family: inherit;
}
.auth-dd-item:hover { background: var(--bg-elevated); color: var(--text-primary); }
.auth-dd-item i { width: 16px; text-align: center; font-size: 0.85rem; }
.auth-dd-sep { height: 1px; background: var(--border); margin: 4px 0; }
.auth-dd-logout { color: var(--red) !important; }
.auth-dd-logout:hover { background: rgba(239,68,68,0.1) !important; }


/* Performance hotfix: reduce expensive effects on low-power/mobile devices */
@media (max-width: 768px), (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
  .gh-live-stats, .glass, .card, .modal, .dropdown, .nav, .mobile-menu, .clean-card, .clean-stat {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
}
img { content-visibility: auto; }