/* ==============================================
   UNIFIED HEADER STYLES - ESL Fun Online
   Standardized header component for all pages
   ============================================== */

/* Force consistent header styling across all pages */
:root {
  --header-height: 80px;
  --header-height-mobile: 70px;
  --primary-color: #46bbe5;
  --primary-hover: #05425c;
  --primary-light: rgba(70, 187, 229, 0.1);
  --text-primary: #1f2937;
  --text-secondary: #6b7280;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --border-color: #e5e7eb;
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
  --transition-normal: 0.3s ease;
  --border-radius: 8px;
  --border-radius-lg: 12px;
}

/* CRITICAL: Override any conflicting header styles */
header {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  border-bottom: 1px solid var(--border-color) !important;
  z-index: 1000 !important;
  transition: all var(--transition-normal) !important;
  will-change: transform, background-color !important;
  height: var(--header-height) !important;
  min-height: var(--header-height) !important;
  max-height: var(--header-height) !important;
}

.dark-mode header,
body.dark-mode header,
html.dark-mode header {
  background: rgba(31, 41, 55, 0.95) !important;
  border-bottom-color: #374151 !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
}

/* Ensure consistent navbar layout */
.navbar {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  height: var(--header-height) !important;
  position: relative !important;
  max-width: 1200px !important;
  margin: 0 auto !important;
  padding: 0 1.5rem !important;
  width: 100% !important;
  box-sizing: border-box !important;
}

/* Standardized container */
header .container {
  max-width: 1200px !important;
  margin: 0 auto !important;
  padding: 0 1.5rem !important;
  width: 100% !important;
  height: 100% !important;
  display: flex !important;
  align-items: center !important;
}

/* Logo container consistency */
.logo-container {
  display: flex !important;
  align-items: center !important;
  gap: 0.75rem !important;
  text-decoration: none !important;
  padding: 0.5rem !important;
  border-radius: var(--border-radius) !important;
  transition: all var(--transition-normal) !important;
  position: relative !important;
  overflow: hidden !important;
  flex-shrink: 0 !important;
}

.logo-container:hover {
  transform: scale(1.02) !important;
}

/* Standardized logo image */
.logo-image {
  width: 40px !important;
  height: 40px !important;
  border-radius: var(--border-radius) !important;
  object-fit: cover !important;
  transition: transform var(--transition-normal) !important;
  box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05) !important;
  flex-shrink: 0 !important;
}

.logo-container:hover .logo-image {
  transform: rotate(5deg) scale(1.05) !important;
}

/* Standardized logo text */
.logo-text {
  font-family: "Poppins", sans-serif !important;
  font-size: 1.5rem !important;
  font-weight: 700 !important;
  color: var(--primary-color) !important;
  text-decoration: none !important;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
  background-clip: text !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  position: relative !important;
  transition: all var(--transition-normal) !important;
  white-space: nowrap !important;
}

/* Navigation links standardization */
.nav-links {
  display: flex !important;
  align-items: center !important;
  gap: 0.5rem !important;
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
  flex: 1 !important;
  justify-content: center !important;
}

.nav-item {
  position: relative !important;
}

.nav-link {
  display: flex !important;
  align-items: center !important;
  gap: 0.5rem !important;
  padding: 0.75rem 1rem !important;
  color: var(--text-primary) !important;
  text-decoration: none !important;
  font-weight: 500 !important;
  border-radius: var(--border-radius) !important;
  transition: all var(--transition-normal) !important;
  position: relative !important;
  white-space: nowrap !important;
  font-size: 0.95rem !important;
}

.nav-link::before {
  content: "" !important;
  position: absolute !important;
  bottom: 0 !important;
  left: 50% !important;
  width: 0 !important;
  height: 2px !important;
  background: var(--primary-color) !important;
  transition: all var(--transition-normal) !important;
  transform: translateX(-50%) !important;
}

.nav-link:hover::before,
.nav-link.active::before {
  width: calc(100% - 2rem) !important;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color) !important;
  background: var(--primary-light) !important;
  transform: translateY(-1px) !important;
}

.nav-link i {
  font-size: 0.875rem !important;
  transition: transform var(--transition-normal) !important;
  opacity: 0.8 !important;
}

.nav-link:hover i {
  opacity: 1 !important;
  transform: scale(1.1) !important;
}

/* Current page indication */
.nav-item.current .nav-link {
  color: var(--primary-color) !important;
  background: var(--primary-light) !important;
  font-weight: 600 !important;
}

/* Dropdown standardization */
.dropdown {
  position: absolute !important;
  top: calc(100% + 0.5rem) !important;
  left: 50% !important;
  transform: translateX(-50%) translateY(-10px) !important;
  min-width: 280px !important;
  max-width: 320px !important;
  background: var(--bg-primary) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--border-radius-lg) !important;
  box-shadow: var(--shadow-lg) !important;
  opacity: 0 !important;
  visibility: hidden !important;
  transition: all var(--transition-normal) !important;
  z-index: 1001 !important;
  overflow: hidden !important;
  backdrop-filter: blur(20px) !important;
}

.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown {
  opacity: 1 !important;
  visibility: visible !important;
  transform: translateX(-50%) translateY(0) !important;
}

.dropdown::before {
  content: "" !important;
  position: absolute !important;
  top: -8px !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  border-left: 8px solid transparent !important;
  border-right: 8px solid transparent !important;
  border-bottom: 8px solid var(--bg-primary) !important;
  filter: drop-shadow(0 -2px 4px rgba(0, 0, 0, 0.1)) !important;
}

.dropdown-item {
  display: flex !important;
  align-items: center !important;
  gap: 0.75rem !important;
  padding: 1rem 1.25rem !important;
  color: var(--text-secondary) !important;
  text-decoration: none !important;
  font-size: 0.9rem !important;
  font-weight: 500 !important;
  transition: all var(--transition-normal) !important;
  border-bottom: 1px solid #f3f4f6 !important;
  position: relative !important;
  overflow: hidden !important;
}

.dropdown-item:last-child {
  border-bottom: none !important;
}

.dropdown-item:hover {
  background: var(--bg-secondary) !important;
  color: var(--primary-color) !important;
  transform: translateX(4px) !important;
}

.dropdown-item i {
  width: 20px !important;
  height: 20px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: var(--primary-color) !important;
  background: var(--primary-light) !important;
  border-radius: 6px !important;
  font-size: 0.875rem !important;
  transition: all var(--transition-normal) !important;
  flex-shrink: 0 !important;
}

.dropdown-item:hover i {
  background: var(--primary-color) !important;
  color: white !important;
  transform: scale(1.1) !important;
}

/* Controls section */
.controls {
  display: flex !important;
  align-items: center !important;
  gap: 0.75rem !important;
  flex-shrink: 0 !important;
}

.control-btn {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 0.5rem !important;
  padding: 0.625rem !important;
  background: var(--bg-primary) !important;
  border: 2px solid var(--border-color) !important;
  border-radius: var(--border-radius) !important;
  color: var(--text-primary) !important;
  cursor: pointer !important;
  transition: all var(--transition-normal) !important;
  text-decoration: none !important;
  font-size: 0.875rem !important;
  font-weight: 500 !important;
  position: relative !important;
  overflow: hidden !important;
  min-width: 44px !important;
  min-height: 44px !important;
}

.control-btn:hover {
  border-color: var(--primary-color) !important;
  color: var(--primary-color) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1) !important;
}

/* Mobile toggle - ensure it's always available */
.mobile-toggle {
  display: none !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  width: 44px !important;
  height: 44px !important;
  padding: 0.5rem !important;
  background: transparent !important;
  border: 2px solid transparent !important;
  border-radius: var(--border-radius) !important;
  cursor: pointer !important;
  transition: all var(--transition-normal) !important;
  -webkit-tap-highlight-color: transparent !important;
}

.mobile-toggle:hover,
.mobile-toggle:focus {
  background: var(--primary-light) !important;
  border-color: var(--primary-color) !important;
}

.mobile-toggle i {
  font-size: 1.25rem !important;
  color: var(--text-primary) !important;
  transition: all var(--transition-normal) !important;
}

.mobile-toggle:hover i,
.mobile-toggle:focus i {
  color: var(--primary-color) !important;
  transform: scale(1.1) !important;
}

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

@media (max-width: 768px) {
  :root {
    --header-height: var(--header-height-mobile);
  }

  header {
    height: var(--header-height-mobile) !important;
    min-height: var(--header-height-mobile) !important;
    max-height: var(--header-height-mobile) !important;
  }

  .navbar {
    height: var(--header-height-mobile) !important;
    padding: 0 1rem !important;
  }

  header .container {
    padding: 0 1rem !important;
  }

  /* FORCE mobile toggle visibility */
  .mobile-toggle {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    order: 3 !important;
    z-index: 1002 !important;
  }

  /* Mobile navigation menu */
  .nav-links {
    position: fixed !important;
    top: var(--header-height-mobile) !important;
    left: 0 !important;
    right: 0 !important;
    background: var(--bg-primary) !important;
    border: 1px solid var(--border-color) !important;
    border-top: none !important;
    flex-direction: column !important;
    align-items: stretch !important;
    padding: 1rem !important;
    gap: 0 !important;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(-20px) !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    max-height: 0 !important;
    overflow: hidden !important;
    box-shadow: var(--shadow-lg) !important;
    backdrop-filter: blur(20px) !important;
    z-index: 1001 !important;
    border-radius: 0 0 16px 16px !important;
    justify-content: flex-start !important;
  }

  .nav-links.active {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
    max-height: calc(100vh - var(--header-height-mobile) - 20px) !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
  }

  .nav-item {
    width: 100% !important;
    margin-bottom: 0.75rem !important;
  }

  .nav-item:last-child {
    margin-bottom: 0 !important;
  }

  .nav-link {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    padding: 1rem 1.25rem !important;
    border-radius: var(--border-radius-lg) !important;
    background: var(--bg-secondary) !important;
    width: 100% !important;
    font-size: 1rem !important;
    border: 2px solid transparent !important;
    box-sizing: border-box !important;
  }

  .nav-link::before {
    display: none !important;
  }

  .nav-link:hover {
    background: var(--primary-light) !important;
    border-color: var(--primary-color) !important;
    transform: none !important;
  }

  /* Mobile dropdown */
  .dropdown {
    position: static !important;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    box-shadow: none !important;
    border: none !important;
    background: #f3f4f6 !important;
    border-radius: var(--border-radius) !important;
    margin-top: 0.75rem !important;
    max-height: 0 !important;
    overflow: hidden !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    width: 100% !important;
    min-width: unset !important;
  }

  .dropdown::before {
    display: none !important;
  }

  .nav-item.mobile-open .dropdown {
    max-height: 400px !important;
    padding: 0.75rem 0 !important;
    border: 1px solid var(--border-color) !important;
    background: #f3f4f6 !important;
  }

  .dropdown-item {
    padding: 1rem 1.25rem !important;
    font-size: 0.95rem !important;
    border-radius: var(--border-radius) !important;
    margin: 0.25rem 0.75rem !important;
    background: var(--bg-primary) !important;
    border: 1px solid transparent !important;
  }

  .dropdown-item:hover {
    transform: none !important;
    background: var(--primary-light) !important;
    border-color: var(--primary-color) !important;
  }

  .nav-item.mobile-open > .nav-link {
    background: var(--primary-light) !important;
    color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
  }

  .nav-item.mobile-open .fa-chevron-down {
    transform: rotate(180deg) !important;
  }

  /* Smaller mobile adjustments */
  @media (max-width: 480px) {
    .navbar {
      padding: 0 0.75rem !important;
    }

    header .container {
      padding: 0 0.75rem !important;
    }

    .logo-text {
      font-size: 1.25rem !important;
    }

    .logo-image {
      width: 36px !important;
      height: 36px !important;
    }

    .controls {
      gap: 0.5rem !important;
    }

    .control-btn {
      min-width: 40px !important;
      min-height: 40px !important;
      padding: 0.5rem !important;
    }
  }
}

/* Ensure body has proper top padding for fixed header */
body {
  padding-top: var(--header-height) !important;
}

@media (max-width: 768px) {
  body {
    padding-top: var(--header-height-mobile) !important;
  }
}

/* Skip link for accessibility */
.skip-link {
  position: absolute !important;
  top: -40px !important;
  left: 6px !important;
  background: var(--primary-color) !important;
  color: white !important;
  padding: 8px 16px !important;
  text-decoration: none !important;
  border-radius: var(--border-radius) !important;
  z-index: 2000 !important;
  font-weight: 600 !important;
  transition: top 0.15s ease !important;
}

.skip-link:focus {
  top: 6px !important;
}

/* ==============================================
   HEADER TO HERO TRANSITION FIXES
   Ensures clean, consistent spacing between header and hero/main content
   ============================================== */

/* Remove any unwanted margins/padding that create bars between header and hero */
header + *,
header + section,
header + main {
  margin-top: 0 !important;
}

/* Remove breadcrumb navigation styling if it exists */
.breadcrumb-nav,
.breadcrumb,
nav.breadcrumb,
nav[aria-label="Breadcrumb"],
nav[aria-label="breadcrumb"],
.breadcrumb-container,
div.breadcrumb,
section.breadcrumb {
  display: none !important;
  visibility: hidden !important;
  height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
  overflow: hidden !important;
}

/* Ensure main content starts right after header */
main#main-content {
  margin-top: 0 !important;
}

/* Ensure consistent hero section positioning */
.hero,
section.hero {
  margin-top: 0 !important;
  position: relative;
  z-index: 1;
}

/* Fix any potential border/shadow artifacts */
header + .hero::before,
header + section.hero::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: transparent;
  z-index: 2;
}

/* Ensure all pages have consistent spacing after header */
header + div,
header + section:not(.hero),
header + main,
header + article {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

/* Force removal of any unwanted spacing elements */
header ~ *:first-of-type {
  margin-top: 0 !important;
}

/* Specific fix for pages with register/contact sections */
.register-section,
.contact-section,
.blog-container {
  margin-top: 0 !important;
  padding-top: 2rem !important;
}

/* Critical fix for pages with custom hero sections that don't account for fixed header */
.hero {
  margin-top: 0 !important;
  box-sizing: border-box !important;
}

/* Ensure hero sections account for fixed header properly */
section.hero,
.hero {
  padding-top: var(--header-height) !important;
}

@media (max-width: 768px) {
  section.hero,
  .hero {
    padding-top: var(--header-height-mobile) !important;
  }
}

/* Fix for pages that incorrectly use margin-top instead of padding-top */
.hero[style*="margin-top"] {
  margin-top: 0 !important;
}

/* Ensure no visual artifacts between header and hero */
header {
  box-shadow: none !important;
  border-bottom: 1px solid var(--border-color) !important;
}

.hero::before {
  top: 0 !important;
}

/* Force clean header-to-hero transition */
body {
  margin: 0 !important;
  padding-top: var(--header-height) !important;
}

@media (max-width: 768px) {
  body {
    padding-top: var(--header-height-mobile) !important;
  }
}

/* Specific overrides for hero content positioning */
.hero-content {
  position: relative !important;
  z-index: 3 !important;
}

.hero-bg {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  z-index: 1 !important;
}

/* ===================================================
   ADDITIONAL MOBILE DROPDOWN FIXES
   =================================================== */
/* Ensure mobile dropdowns work properly */
@media (max-width: 768px) {
  /* FORCE mobile menu to display full width */
  .nav-links,
  #navLinks,
  ul.nav-links {
    display: flex !important;
    position: fixed !important;
    top: 70px !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: auto !important;
    min-height: calc(100vh - 70px) !important;
  }

  .nav-links.active,
  #navLinks.active,
  ul.nav-links.active {
    display: flex !important;
    max-height: calc(100vh - 70px) !important;
    height: auto !important;
  }

  /* Make sure nav links with dropdowns are clearly tappable */
  .nav-item .nav-link {
    position: relative;
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: rgba(70, 187, 229, 0.2);
    cursor: pointer;
  }

  /* Ensure chevron is visible and clickable */
  .nav-link .fa-chevron-down {
    transition: transform 0.3s ease !important;
    opacity: 1 !important;
    pointer-events: none; /* Let clicks go through to parent link */
  }

  /* Visual feedback when dropdown is open */
  .nav-item.mobile-open > .nav-link,
  .nav-item.mobile-dropdown-open > .nav-link {
    background: rgba(70, 187, 229, 0.15) !important;
    border-color: var(--primary-color, #46bbe5) !important;
  }

  /* Make dropdowns smoother */
  .dropdown {
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
      padding 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
  }

  /* Ensure dropdown items are visible when parent is open */
  .nav-item.mobile-open .dropdown,
  .nav-item.mobile-dropdown-open .dropdown {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: auto !important;
  }

  /* Ensure dropdown items are clickable */
  .dropdown-item,
  .dropdown > a {
    pointer-events: auto !important;
    touch-action: manipulation !important;
    user-select: none;
    -webkit-user-select: none;
  }
}