/* Shared Datakar navigation — mobile-first */
.global-header {
  --gn-surface: var(--color-surface, var(--surface, #ffffff));
  --gn-text: var(--color-text, var(--text, #222222));
  --gn-muted: var(--color-muted, var(--muted, #666666));
  --gn-border: var(--color-border, var(--border, #e0e0e0));
  --gn-primary: var(--color-primary, var(--primary, #e67e22));
  position: relative;
  z-index: 100;
  width: 100%;
  min-height: 64px;
  padding: .6rem 1.25rem;
  background: var(--gn-surface);
  border-bottom: 1px solid var(--gn-border);
}

.global-header .global-nav {
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.global-header #nav-branding {
  display: inline-flex;
  align-items: center;
  color: inherit;
  text-decoration: none;
  flex: 0 0 auto;
}

.global-header #datakar-logo {
  display: block;
  height: 2rem;
  width: auto;
}

.global-header .desktop-nav { display: flex; align-items: center; }
.global-header .desktop-nav ul {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.global-header .desktop-nav a {
  color: var(--gn-text);
  text-decoration: none;
  font-weight: 400;
}
.global-header .desktop-nav a:hover,
.global-header .desktop-nav a:focus-visible { color: var(--gn-primary); }

.mobile-menu-button,
.mobile-nav-drawer,
.mobile-nav-backdrop { display: none; }

.cross-language-hint {
  margin: .55rem 0 0;
  color: var(--color-muted, var(--muted, #666));
  font-size: .88rem;
  line-height: 1.75;
}
.cross-language-hint a {
  color: var(--color-primary, var(--primary, #e67e22));
  text-underline-offset: 3px;
}

@media (max-width: 600px) {
  .global-header {
    position: sticky;
    top: 0;
    z-index: 100;
    min-height: 60px;
    padding: .5rem 1rem;
    background: color-mix(in srgb, var(--gn-surface) 94%, transparent);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
  }

  .global-header .global-nav { min-height: 44px; flex-wrap: nowrap; }
  .global-header .desktop-nav { display: none !important; }
  .global-header #datakar-logo { height: 2rem; }

  .mobile-menu-button {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 0;
    border: 0;
    border-radius: 12px;
    background: transparent;
    color: var(--gn-text, #222);
    cursor: pointer;
  }
  .mobile-menu-button:hover,
  .mobile-menu-button:focus-visible { background: rgba(127,127,127,.10); }
  .mobile-menu-button span {
    width: 20px;
    height: 2px;
    display: block;
    border-radius: 999px;
    background: currentColor;
  }

  .mobile-nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: 120;
    display: block;
    background: rgba(0,0,0,.28);
    opacity: 0;
    transition: opacity .2s ease;
  }
  .mobile-nav-backdrop[hidden] { display: none; }
  .mobile-nav-backdrop.is-open { opacity: 1; }

  .mobile-nav-drawer {
    --gn-surface: var(--color-surface, var(--surface, #ffffff));
    --gn-text: var(--color-text, var(--text, #222222));
    --gn-muted: var(--color-muted, var(--muted, #666666));
    --gn-border: var(--color-border, var(--border, #e0e0e0));
    --gn-primary: var(--color-primary, var(--primary, #e67e22));
    position: fixed;
    inset-block: 0;
    inset-inline-start: 0;
    z-index: 130;
    width: min(320px, 86vw);
    display: flex;
    flex-direction: column;
    padding: .8rem;
    background: var(--gn-surface);
    color: var(--gn-text);
    border-inline-end: 1px solid var(--gn-border);
    box-shadow: 0 16px 48px rgba(0,0,0,.16);
    transform: translateX(105%);
    visibility: hidden;
    transition: transform .22s ease, visibility .22s ease;
  }
  .mobile-nav-drawer.is-open { transform: translateX(0); visibility: visible; }

  .mobile-drawer-header {
    min-height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    padding: .15rem .35rem .75rem;
    border-bottom: 1px solid var(--gn-border);
  }
  .mobile-drawer-header strong { font-size: 1.05rem; }

  .mobile-menu-close {
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border: 0;
    border-radius: 12px;
    background: transparent;
    color: var(--gn-text);
    font-size: 1.75rem;
    line-height: 1;
    cursor: pointer;
  }
  .mobile-menu-close:hover,
  .mobile-menu-close:focus-visible { background: rgba(127,127,127,.10); }

  .mobile-drawer-nav {
    display: grid;
    gap: .25rem;
    padding-block: .8rem;
  }
  .mobile-drawer-nav a {
    min-height: 48px;
    display: flex;
    align-items: center;
    padding-inline: .85rem;
    border-radius: 12px;
    color: var(--gn-text);
    text-decoration: none;
    font-weight: 700;
  }
  .mobile-drawer-nav a:hover,
  .mobile-drawer-nav a:focus-visible,
  .mobile-drawer-nav a[aria-current="page"] {
    background: rgba(127,127,127,.10);
    color: var(--gn-primary);
  }
  .mobile-drawer-divider {
    height: 1px;
    margin: .45rem .85rem;
    background: var(--gn-border);
  }
  .mobile-drawer-footer {
    margin-top: auto;
    padding: .9rem .85rem .35rem;
    border-top: 1px solid var(--gn-border);
    color: var(--gn-muted);
    font-size: .86rem;
    line-height: 1.6;
  }
  body.mobile-menu-open { overflow: hidden; }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-nav-drawer,
  .mobile-nav-backdrop { transition: none; }
}