/**
 * Header Modern - Glassmorphism 2025
 *
 * Features:
 * - Beige background from theme.json
 * - Logo image display
 * - Orange hover effects
 * - Gradient underline violet→orange→turquoise
 * - Sticky navigation with scroll detection
 * - Responsive mobile hamburger menu
 * - Full accessibility (ARIA, keyboard)
 *
 * Version: 1.0.4
 */

/* ============================================
   VARIABLES
   ============================================ */

:root {
  /* Header colors - Beige background from theme.json */
  --header-bg-light: rgba(253, 241, 221, 0.95); /* #fdf1dd with opacity */
  --header-bg-scrolled: #fdf1dd; /* beige-100 from theme.json */
  --header-border: rgba(91, 46, 127, 0.1); /* violet-500 */
  --header-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);

  /* Menu colors - from theme.json */
  --menu-link-color: #44403c; /* gray-700 */
  --menu-link-hover: #f89420; /* orange-500 */
  --menu-underline: linear-gradient(90deg, #5b2e7f, #f89420, #51c4b5); /* violet→orange→turquoise */

  /* Mobile menu */
  --mobile-menu-bg: rgba(253, 241, 221, 0.98);
  --mobile-menu-overlay: rgba(0, 0, 0, 0.3);
  --hamburger-color: #44403c;

  /* Spacing */
  --header-height: 80px;
  --header-padding: 1.5rem;
  --menu-gap: 2rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   HEADER BASE
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;

  /* Glassmorphism with beige */
  background: var(--header-bg-light);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);

  border-bottom: 1px solid var(--header-border);
  box-shadow: var(--header-shadow);

  transition: background var(--transition-medium),
              backdrop-filter var(--transition-medium);
}

/* Header scrolled state */
.site-header.scrolled {
  background: var(--header-bg-scrolled);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* Header inner container */
.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--header-padding);
  height: var(--header-height);

  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ============================================
   LOGO
   ============================================ */

/* Logo */
.header-brand-logo {
  display: inline-block;
  text-decoration: none;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.header-brand-logo:hover,
.header-brand-logo:focus {
  transform: scale(1.05);
  opacity: 0.9;
}

.header-brand-logo img {
  height: 60px;
  width: auto;
  display: block;
}

/* ============================================
   NAVIGATION - DESKTOP
   ============================================ */

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--menu-gap);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--menu-gap);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  position: relative;
  color: var(--menu-link-color);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: 0.5rem 0;

  transition: color var(--transition-fast);
}

/* Gradient underline effect - violet→orange→turquoise */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;

  background: var(--menu-underline);

  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-medium);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--menu-link-hover);
}

.nav-link:hover::after,
.nav-link:focus::after {
  transform: scaleX(1);
}

/* Active page */
.nav-link.active {
  color: var(--menu-link-hover);
  font-weight: 600;
}

.nav-link.active::after {
  transform: scaleX(1);
}

/* ============================================
   HAMBURGER MENU BUTTON
   ============================================ */

.hamburger-button {
  display: none; /* Hidden on desktop */

  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;

  width: 48px;
  height: 48px;

  position: relative;
  z-index: 1001;

  /* Accessibility */
  -webkit-tap-highlight-color: transparent;
}

.hamburger-button:focus {
  outline: 2px solid var(--menu-link-hover);
  outline-offset: 4px;
}

/* Hamburger icon lines */
.hamburger-icon {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--hamburger-color);

  position: relative;
  transition: background var(--transition-fast);
}

.hamburger-icon::before,
.hamburger-icon::after {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--hamburger-color);

  position: absolute;
  left: 0;

  transition: transform var(--transition-medium),
              top var(--transition-medium),
              bottom var(--transition-medium);
}

.hamburger-icon::before {
  top: -8px;
}

.hamburger-icon::after {
  bottom: -8px;
}

/* Hamburger animation to X */
.hamburger-button[aria-expanded="true"] .hamburger-icon {
  background: transparent;
}

.hamburger-button[aria-expanded="true"] .hamburger-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.hamburger-button[aria-expanded="true"] .hamburger-icon::after {
  bottom: 0;
  transform: rotate(-45deg);
}

/* ============================================
   MOBILE MENU OVERLAY
   ============================================ */

/* Hide mobile menu on desktop - IMPORTANT: Must be !important to override WordPress classes */
.header-mobile-menu {
  display: none !important;
}

.mobile-menu-overlay {
  display: none; /* Hidden on desktop */

  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;

  background: var(--mobile-menu-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);

  z-index: 999;

  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow),
              visibility var(--transition-slow);
}

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

/* Mobile menu content */
.mobile-menu-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  height: 100vh;
  padding: 2rem;
}

.mobile-nav-menu {
  list-style: none;
  margin: 0;
  padding: 0;

  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.mobile-nav-link {
  color: var(--menu-link-color);
  text-decoration: none;
  font-weight: 500;
  font-size: 1.5rem;

  transition: color var(--transition-fast),
              transform var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link:focus {
  color: var(--menu-link-hover);
  transform: scale(1.1);
}

.mobile-nav-link.active {
  color: var(--menu-link-hover);
  font-weight: 700;
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* Tablet and Mobile */
@media screen and (max-width: 1023px) {
  .site-nav,
  .nav-menu,
  .header-nav-desktop {
    display: none !important;
  }

  .hamburger-button {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .mobile-menu-overlay,
  .header-mobile-menu {
    display: block !important;
  }
}

/* Mobile only */
@media screen and (max-width: 767px) {
  :root {
    --header-height: 64px;
    --header-padding: 1rem;
  }

  .header-brand-logo img {
    height: 45px;
  }

  .mobile-nav-link {
    font-size: 1.25rem;
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Keyboard focus styles */
.nav-link:focus-visible,
.mobile-nav-link:focus-visible,
.site-logo:focus-visible,
.header-brand a:focus-visible,
.wp-block-site-title a:focus-visible {
  outline: 2px solid var(--menu-link-hover);
  outline-offset: 4px;
  border-radius: 4px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================
   FALLBACKS FOR OLDER BROWSERS
   ============================================ */

@supports not (backdrop-filter: blur(10px)) {
  .site-header {
    background: rgba(253, 241, 221, 0.95);
  }

  .site-header.scrolled {
    background: rgba(253, 241, 221, 1);
  }

  .mobile-menu-overlay {
    background: rgba(253, 241, 221, 1);
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .site-header {
    position: relative;
    background: white;
    box-shadow: none;
    border-bottom: 1px solid #ddd;
  }

  .hamburger-button,
  .mobile-menu-overlay {
    display: none;
  }

  .site-nav {
    display: none;
  }
}