/**
 * Header Component Styling - GPCC
 * Dark theme header with responsive navigation and accessibility
 */

/* === HEADER CONTAINER === */
.gpcc-skin .site-header {
  background-color: var(--header-bg);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 100;
}

.gpcc-skin .inside-header {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gap-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
}

/* === SKIP LINK === */
.gpcc-skin .screen-reader-text:focus {
  background-color: var(--primary);
  color: white;
  padding: var(--gap-xs) var(--gap-sm);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  box-shadow: 0 0 0 2px var(--focus-ring);
  z-index: 1000;
}

/* === BRANDING === */
.gpcc-skin .site-branding {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.gpcc-skin .site-logo {
  display: flex;
  align-items: center;
}

.gpcc-skin .site-logo img {
  max-height: 36px;
  width: auto;
  transition: transform var(--transition-fast);
}

.gpcc-skin .site-logo img:hover {
  transform: scale(1.02);
}

.gpcc-skin .main-title {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
}

.gpcc-skin .main-title a {
  color: var(--text);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.gpcc-skin .main-title a:hover,
.gpcc-skin .main-title a:focus-visible {
  color: var(--primary);
}

.gpcc-skin .main-title a:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* === PRIMARY NAVIGATION === */
.gpcc-skin .main-navigation {
  display: flex;
  align-items: center;
  flex-grow: 1;
  justify-content: flex-end;
  position: relative;
}

.gpcc-skin .main-nav {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--gap);
}

.gpcc-skin .main-nav li {
  position: relative;
}

.gpcc-skin .main-nav a {
  color: var(--text);
  text-decoration: none;
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  padding: var(--gap-xs) var(--gap-sm);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  display: block;
}

.gpcc-skin .main-nav a:hover,
.gpcc-skin .main-nav a:focus-visible {
  color: var(--primary);
}

.gpcc-skin .main-nav a:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.gpcc-skin .main-nav .current-menu-item > a,
.gpcc-skin .main-nav .current-menu-ancestor > a {
  color: var(--primary);
  position: relative;
}

.gpcc-skin .main-nav .current-menu-item > a::after,
.gpcc-skin .main-nav .current-menu-ancestor > a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background-color: var(--primary);
  border-radius: 1px;
}

/* === DROPDOWN MENUS === */
.gpcc-skin .main-nav .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background-color: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  list-style: none;
  margin: 0;
  padding: var(--gap-xs);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity var(--transition-fast), 
              visibility var(--transition-fast), 
              transform var(--transition-fast);
  z-index: 1000;
}

.gpcc-skin .main-nav li:hover .sub-menu,
.gpcc-skin .main-nav li:focus-within .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.gpcc-skin .main-nav .sub-menu a {
  color: var(--text);
  padding: var(--gap-xs) var(--gap-sm);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.gpcc-skin .main-nav .sub-menu a:hover,
.gpcc-skin .main-nav .sub-menu a:focus-visible {
  background-color: var(--surface-3);
  color: var(--primary);
}

/* === MOBILE TOGGLE === */
.gpcc-skin .menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  cursor: pointer;
  transition: background-color var(--transition-fast), 
              border-color var(--transition-fast);
  position: relative; /* keep above overlay */
  z-index: 2001;
}

.gpcc-skin .menu-toggle:hover {
  background-color: var(--surface-2);
  border-color: var(--primary);
}

.gpcc-skin .menu-toggle:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.gpcc-skin .menu-toggle .mobile-menu {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  margin-left: var(--gap-xs);
}

/* Hamburger icon */
.gpcc-skin .menu-toggle::before {
  content: '';
  width: 18px;
  height: 2px;
  background-color: currentColor;
  box-shadow: 
    0 6px 0 currentColor,
    0 12px 0 currentColor;
  transition: all var(--transition-fast);
}

.gpcc-skin .menu-toggle[aria-expanded="true"]::before {
  transform: rotate(45deg) translate(4px, 4px);
  box-shadow: 
    0 0 0 currentColor,
    0 0 0 currentColor;
}

.gpcc-skin .menu-toggle[aria-expanded="true"]::after {
  content: '';
  position: absolute;
  width: 18px;
  height: 2px;
  background-color: currentColor;
  transform: rotate(-45deg) translate(4px, -4px);
}

/* === MOBILE NAVIGATION === */
/* Show mobile menu when GeneratePress toggles the nav OR when the toggle has aria-expanded=true
   (aria fallback covers markup differences across GP versions). */
.gpcc-skin .main-navigation.toggled .main-nav,
.gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav {
  display: block;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--surface-1);
  border-top: 1px solid var(--border);
  padding: var(--gap-sm);
  box-shadow: var(--shadow-md);
  z-index: 1000;
}

.gpcc-skin .main-nav.toggled li {
  margin: 0;
}

.gpcc-skin .main-nav.toggled a {
  display: block;
  padding: var(--gap-sm);
  border-radius: var(--radius-sm);
  border-bottom: 1px solid var(--border);
}

.gpcc-skin .main-nav.toggled a:hover,
.gpcc-skin .main-nav.toggled a:focus-visible {
  background-color: var(--surface-2);
}

.gpcc-skin .main-navigation.toggled .sub-menu,
.gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav .sub-menu {
  position: static;
  opacity: 1;
  visibility: visible;
  transform: none;
  box-shadow: none;
  border: none;
  background: transparent;
  padding-left: var(--gap);
}

.gpcc-skin .gpcc-nav-close {
  display: none;
}

/* === FULLSCREEN MOBILE MENU OVERLAY (improves contrast & readability) === */
@media (max-width: 1023px) {
  /* Turn the revealed nav into a full-screen overlay */
  .gpcc-skin .main-navigation.toggled .main-nav,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--gap);
    /* Dark, theme-aligned background (no white) */
    background: rgba(11, 18, 32, 0.96);
    /* Fallback solid in case alpha is overridden by third-party CSS */
    background-color: #0B1220;
    backdrop-filter: blur(4px);
    padding: var(--gap-lg) var(--gap);
    height: 100vh;
    width: 100vw;
    box-shadow: none;
    z-index: 2000;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Dedicated overlay layer to ensure dark background even if main-nav styles are overridden */
  .gpcc-skin .main-navigation.toggled::before,
  .gpcc-skin .main-navigation.toggled::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(11, 18, 32, 0.94);
    backdrop-filter: blur(4px);
    z-index: 1999;
    pointer-events: none;
  }

  @supports (selector(nav:has(.menu-toggle[aria-expanded="true"]))) {
    .gpcc-skin nav.main-navigation:has(> .menu-toggle[aria-expanded="true"])::before,
    .gpcc-skin nav.main-navigation:has(> .menu-toggle[aria-expanded="true"])::after {
      content: '';
      position: fixed;
      inset: 0;
      background: rgba(11, 18, 32, 0.94);
      backdrop-filter: blur(4px);
      z-index: 1999;
      pointer-events: none;
    }
  }

  /* Close button shown while overlay active */
  .gpcc-skin .gpcc-nav-close {
    position: fixed;
    top: var(--gap);
    right: var(--gap);
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text);
    background: rgba(17, 26, 51, 0.85);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    z-index: 2002;
    cursor: pointer;
    transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  }

  .gpcc-skin .gpcc-nav-close:hover,
  .gpcc-skin .gpcc-nav-close:focus-visible {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    outline: none;
  }

  .gpcc-skin .gpcc-nav-close.is-visible {
    display: inline-flex;
  }

  /* Center the list itself */
  .gpcc-skin .main-navigation.toggled .main-nav > ul,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav > ul,
  .gpcc-skin .main-navigation.toggled .main-nav .menu,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav .menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: calc(var(--gap) * 0.75);
    background: transparent; /* prevent white background from parent theme */
    border: 0;
  }

  /* Menu item links: large, high-contrast */
  .gpcc-skin .main-navigation.toggled .main-nav a,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav a {
    color: var(--text);
    font-size: clamp(1.125rem, 3.8vw, 1.625rem);
    font-weight: var(--font-semibold);
    padding: 8px 14px;
    border: none;
    background: transparent;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
  }

  .gpcc-skin .main-navigation.toggled .main-nav a:hover,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav a:hover,
  .gpcc-skin .main-navigation.toggled .main-nav a:focus-visible,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav a:focus-visible {
    color: white;
    background: var(--primary);
    outline: none;
  }

  /* Current item highlight */
  .gpcc-skin .main-navigation.toggled .main-nav .current-menu-item > a,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav .current-menu-item > a {
    color: white;
    background: var(--primary);
  }

  /* Submenus shown inline below parent item */
  .gpcc-skin .main-navigation.toggled .main-nav .sub-menu,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav .sub-menu {
    position: static;
    margin-top: 6px;
    padding: 0;
    background: transparent;
    border: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .gpcc-skin .main-navigation.toggled .main-nav .sub-menu a,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav .sub-menu a {
    font-size: clamp(1rem, 3.2vw, 1.25rem);
    color: var(--text);
    padding: 6px 10px;
    background: transparent;
  }

  /* Ensure list items have no unexpected white strips/borders from parent */
  .gpcc-skin .main-navigation.toggled .main-nav li,
  .gpcc-skin .main-navigation .menu-toggle[aria-expanded="true"] ~ .main-nav li {
    border: 0;
    background: transparent;
  }
}

/* === HEADER SEARCH (Optional) === */
.gpcc-skin .header-search {
  margin-left: var(--gap);
}

.gpcc-skin .header-search input[type="search"] {
  width: 200px;
  height: 40px;
  padding: 0 var(--gap-sm);
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: var(--text-sm);
  transition: background-color var(--transition-fast), 
              border-color var(--transition-fast);
}

.gpcc-skin .header-search input[type="search"]:hover {
  background-color: var(--surface-3);
}

.gpcc-skin .header-search input[type="search"]:focus {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  border-color: var(--primary);
}

.gpcc-skin .header-search input[type="search"]::placeholder {
  color: var(--text-soft);
}

/* === STICKY HEADER (Optional) === */
.gpcc-skin .site-header.gpcc-header--sticky {
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  background-color: rgba(17, 26, 51, 0.95);
  z-index: 1000;
}

/* === RESPONSIVE DESIGN === */

/* Desktop */
@media (min-width: 1024px) {
  .gpcc-skin .main-nav {
    display: flex;
  }
  
  .gpcc-skin .menu-toggle {
    display: none;
  }
  
  .gpcc-skin .inside-header {
    padding: 0 var(--gap);
  }
}

/* Large Desktop */
@media (min-width: 1280px) {
  .gpcc-skin .inside-header {
    padding: 0 var(--gap-lg);
  }
  
  .gpcc-skin .main-nav {
    gap: var(--gap-lg);
  }
}

/* Tablet */
@media (max-width: 1023px) {
  .gpcc-skin .site-logo img {
    max-height: 32px;
  }
  
  .gpcc-skin .header-search {
    display: none;
  }
}

/* Mobile */
@media (max-width: 767px) {
  .gpcc-skin .inside-header {
    min-height: 56px;
    padding: 0 var(--gap-sm);
  }
  
  .gpcc-skin .site-logo img {
    max-height: 28px;
  }
  
  .gpcc-skin .main-title {
    font-size: var(--text-lg);
  }
  
  .gpcc-skin .menu-toggle {
    width: 40px;
    height: 40px;
  }
  
  .gpcc-skin .menu-toggle .mobile-menu {
    display: none;
  }
}