:root {
  /* Colors */
  /* =========================================
     1. GLOBAL NEUTRALS (Base Theme)
     ========================================= */
  --color-bg-primary: #ffffff; /* Pure white for main backgrounds */
  --color-bg-secondary: #f8fafc; /* Soft off-white for section contrast */
  --color-border-soft: #e5e7eb; /* Subtle borders for cards and dividers */
  --color-bg-dark: #d4d4d4; /* Pure white for main backgrounds */

  --color-text-main: #0f172a; /* Charcoal/Slate for primary high-contrast text */
  --color-text-muted: #64748b; /* Muted slate for secondary text and labels */

  /* =========================================
     2. PILLAR 1: ACADEMY (Navy Slate)
     ========================================= */
  --color-academy-main: #1e293b; /* Primary brand color for Academy */
  --color-academy-hover: #334155; /* Lighter shade for button hovers */
  --color-academy-surface: #f1f5f9; /* Very light tint for active states or alert boxes */

  /* =========================================
     3. PILLAR 2: AUTOMOTIVE (Signal Cyan)
     ========================================= */
  --color-auto-main: #0284c7; /* Primary brand color for Automotive */
  --color-auto-hover: #0ea5e9; /* Lighter shade for button hovers */
  --color-auto-surface: #f0f9ff; /* Very light tint for active states or alert boxes */

  /* =========================================
     4. PILLAR 3: ADVISORY (Warm Maple Red)
     ========================================= */
  --color-advisory-main: #dc2626; /* Primary brand color for Advisory */
  --color-advisory-hover: #ef4444; /* Lighter shade for button hovers */
  --color-advisory-surface: #fef2f2; /* Very light tint for active states or alert boxes */

  /* =========================================
   PILLAR 4: PRODUCTS / ADVISORY ALT (Warm Amber)
   ========================================= */
  --color-amber-main: #d97706; /* Primary accent */
  --color-amber-hover: #F59E0B; /* Darker shade for hover states */
  --color-amber-surface: #fffbeb; /* Ultra-light background tint for cards/badges */
  
  /* Font Sizes */
  --fs-small: 0.75rem;
  --fs-medium: 0.875rem;
  --fs-large: 1rem;
  --fs-xlarge: 1.25rem;
  --fs-heading-1: 1.5rem;
  --fs-heading-2: 1.75rem;
  --fs-heading-3: 2rem;

  /* Spacing */
  --sp-small: 0.25rem;
  --sp-medium: 1rem;
  --sp-large: 1rem;
  --sp-xlarge: 1.5rem;

  /* Border Radius */
  --br-small: 5px;
  --br-medium: 8px;
  --br-large: 12px;
  --br-xlarge: 16px;

  /* Fonts */
  --default-font-family: "Inter", Helvetica, sans-serif;

  --header-height: 68px;
}

html,
:host {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  line-height: 1.5;
  font-family: var(--default-font-family);
  -webkit-tap-highlight-color: transparent;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  background-color: var(--color-bg-secondary);
  color: var(--color-text-main);
}

/* =========================================
   MAIN FIXED FLOATING HEADER
   ========================================= */
.main-header {
  position: fixed;
  top: 1.25rem;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 3rem);
  max-width: 1240px;
  height: var(--header-height);
  background-color: var(--color-bg-primary);
  border-radius: var(--br-xlarge);
  border: solid 1px var(--color-border-soft);
  box-shadow:
    0 10px 30px -10px rgba(15, 23, 42, 0.08),
    0 4px 6px -4px rgba(15, 23, 42, 0.03);
  z-index: 1000;
  transition:
    box-shadow 0.3s ease,
    transform 0.3s ease,
    top 0.3s ease;
}

.header-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-xlarge);
}

/* =========================================
   LOGO
   ========================================= */
.header-left {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: var(--sp-xlarge);
}

.logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition:
    transform 0.2s ease,
    opacity 0.2s ease;
}

.logo:hover {
  transform: scale(1.03);
  opacity: 0.95;
}

.logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  display: block;
}

/* =========================================
   DESKTOP NAVIGATION
   ========================================= */
.nav-container {
  display: flex;
  align-items: center;
}

.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.85rem;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--fs-medium);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  background: none;
  border: none;
  font-family: inherit;
  padding: 0.5rem 0.25rem;
  cursor: pointer;
  transition:
    color 0.2s ease,
    font-weight 0.2s ease;
}

.nav-link:hover,
.dropdown.active > .nav-link {
  color: var(--color-text-main);
  font-weight: 600;
}

/* Dropdown Arrow Animation */
.dropdown-arrow {
  font-size: 1.15rem;
  line-height: 1;
  transition:
    transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
    color 0.2s ease;
}

.dropdown.active .dropdown-arrow {
  transform: rotate(180deg);
  color: var(--color-text-main);
}

/* =========================================
   DROPDOWN & MEGA-MENU BASE
   ========================================= */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--br-xlarge);
  box-shadow:
    0 20px 40px -15px rgba(15, 23, 42, 0.12),
    0 8px 16px -6px rgba(15, 23, 42, 0.04);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(8px);
  transition:
    opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.25s cubic-bezier(0.16, 1, 0.3, 1),
    visibility 0.25s;
  z-index: 999;
}

/* JS-controlled only — .active class opens the dropdown */
.dropdown.active > .dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
  z-index: 1000;
}

/* Invisible hover bridge to prevent premature closing */
.dropdown-menu::before {
  content: "";
  position: absolute;
  top: -16px;
  left: 0;
  right: 0;
  height: 16px;
}

/* =========================================
   MEGA-MENU (TRAININGS)
   MEGA-MENU (TRAININGS & SERVICES)
   ========================================= */
.mega-dropdown .mega-menu {
  position: fixed;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  /* Match header exactly: same width formula + same border accounting */
  width: calc(100% - 3rem);
  max-width: 1240px;
  /* top = header top + header height + tiny 4px gap */
  top: calc(1.25rem + var(--header-height) + 4px);
  padding: 2.25rem 2.5rem;
}

.mega-dropdown.active > .mega-menu {
  transform: translateX(-50%) translateY(0);
  z-index: 1000;
}

.mega-menu-content {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 3rem;
}

.mega-menu-links {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 3rem;
  align-content: start;
}

.mega-column {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.dropdown-item {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--fs-medium);
  font-weight: 500;
  line-height: 1.45;
  transition:
    color 0.2s ease,
    transform 0.2s ease;
  display: inline-block;
  cursor: pointer;
}

.dropdown-item:hover {
  color: var(--color-text-main);
  transform: translateX(4px);
}

/* Mega-Menu Banner Card */
.mega-menu-banner {
  width: 320px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.banner-img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: var(--br-large);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.08);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.mega-menu-banner:hover .banner-img {
  transform: scale(1.02);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.12);
}

/* =========================================
   HEADER RIGHT (CONTACT US & TOGGLE)
   ========================================= */
.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.btn-contact {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 1.35rem;
  border-radius: 9999px;
  border: 1.5px solid var(--color-border-soft);
  background-color: transparent;
  color: var(--color-text-main);
  font-size: var(--fs-medium);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.btn-contact:hover {
  border-color: var(--color-academy-main);
  background-color: var(--color-academy-surface);
  color: var(--color-academy-main);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.06);
}

.btn-contact:active {
  transform: translateY(0);
}

/* Mobile Hamburger Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--br-medium);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: all 0.2s ease;
}

.menu-toggle:hover {
  background-color: var(--color-academy-surface);
}

.hamburger-bar {
  width: 20px;
  height: 2px;
  background-color: var(--color-text-main);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transform-origin: center;
}

/* Hamburger to Cross Animation */
.menu-toggle.active .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active .hamburger-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.menu-toggle.active .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* =========================================
   RESPONSIVE: TABLET & MOBILE (< 1024px)
   ========================================= */
@media (max-width: 1024px) {
  .main-header {
    width: calc(100% - 2rem);
    top: 1rem;
    padding: 0;
  }

  .header-container {
    padding: 0 var(--sp-medium);
  }

  .menu-toggle {
    display: flex;
  }

  /* Mobile Slide-down Navigation Drawer */
  .nav-container {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border-soft);
    border-radius: var(--br-xlarge);
    box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.16);
    padding: 1.25rem;
    max-height: calc(85vh - var(--header-height));
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-8px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .nav-container.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    width: 100%;
  }

  .nav-item {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    justify-content: space-between;
    padding: 0.75rem 0.85rem;
    border-radius: var(--br-medium);
    font-size: var(--fs-large);
  }

  .nav-link:hover,
  .dropdown.active > .nav-link {
    background-color: var(--color-academy-surface);
  }

  /* Mobile Accordion Style for Dropdowns */
  .dropdown-menu,
  .mega-dropdown .mega-menu,
  .standard-menu {
    position: static;
    transform: none !important;
    width: 100%;
    max-width: 100%;
    left: auto;
    top: auto;
    box-shadow: none;
    border: none;
    background-color: var(--color-academy-surface);
    border-radius: var(--br-medium);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition:
      max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1),
      opacity 0.25s ease,
      padding 0.35s ease;
  }

  .dropdown-menu::before {
    display: none;
  }

  .dropdown.active > .dropdown-menu,
  .mega-dropdown.active > .mega-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    max-height: 800px;
    padding: 1rem;
    max-height: 500px;
    padding: 0.85rem;
    margin-top: 0.35rem;
  }

  .mega-menu-content {
    flex-direction: column-reverse;
    gap: 1.25rem;
    flex-direction: column;
    gap: 0;
  }

  .mega-menu-links {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    gap: 0.5rem;
  }

  .mega-column {
    gap: 0.75rem;
    gap: 0.5rem;
  }

  /* Hide mega menu banner image on mobile */
  .mega-menu-banner {
    width: 100%;
    display: none;
  }

  .banner-img {
    height: 160px;
  }

  .dropdown-item {
    padding: 0.5rem 0.5rem;
    font-size: var(--fs-medium);
  }
}

/* =========================================
   RESPONSIVE: SMALL MOBILE (< 640px)
   ========================================= */
@media (max-width: 640px) {
  .main-header {
    width: calc(100% - 1.25rem);
    top: 0.65rem;
  }

  .logo-img {
    height: 40px;
  }

  .btn-contact {
    padding: 0.45rem 0.95rem;
    font-size: var(--fs-small);
  }
}