/* Header & Mega Menu styling */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all var(--transition-normal);
  background-color: transparent;
  padding: var(--spacing-24) 0;
}

.header.scrolled {
  background-color: var(--color-white);
  box-shadow: var(--shadow-normal);
  padding: var(--spacing-16) 0;
}

.header.scrolled .nav-link {
  color: var(--color-heading);
}

.header.scrolled .logo-default {
  display: block;
}

.header.scrolled .logo-white {
  display: none;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo-link img {
  height: 45px;
  width: auto;
}

.logo-default {
  display: block;
}

.logo-white {
  display: none;
}

.header.hero-dark .logo-default {
  display: none;
}

.header.hero-dark .logo-white {
  display: block;
}

.header.hero-dark.scrolled .logo-default {
  display: block;
}

.header.hero-dark.scrolled .logo-white {
  display: none;
}

.header.hero-dark:not(.scrolled) .nav-link {
  color: var(--color-white);
}

/* Nav Menu */
.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-32);
  align-items: center;
}

.nav-item {
  position: relative;
}

.nav-link {
  font-weight: 500;
  color: var(--color-heading);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 0;
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-link svg {
  width: 12px;
  height: 12px;
  transition: transform var(--transition-fast);
}

.nav-item:hover .nav-link svg {
  transform: rotate(180deg);
}

/* Mega Dropdown Structure */
.mega-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  width: 1100px;
  background-color: var(--color-white);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.1);
  border-radius: 16px;
  padding: var(--spacing-40);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-24);
  z-index: 100;
}

.nav-item:hover .mega-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.mega-column h4 {
  font-size: var(--font-size-p2);
  color: var(--color-heading);
  margin-bottom: var(--spacing-16);
  border-bottom: 2px solid var(--color-gray-200);
  padding-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.mega-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
}

.mega-links a {
  font-size: var(--font-size-p3);
  color: var(--color-neutral-700);
  display: block;
  padding: 4px 0;
  transition: padding var(--transition-fast), color var(--transition-fast);
}

.mega-links a:hover {
  color: var(--color-primary);
  padding-left: 6px;
}

/* Mobile Menu Button */
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  z-index: 2000;
  position: relative;
}

.hamburger span {
  display: block;
  width: 28px;
  height: 3px;
  background-color: var(--color-heading);
  margin: 5px 0;
  transition: var(--transition-normal);
}

.header.hero-dark:not(.scrolled) .hamburger span {
  background-color: var(--color-white);
}

/* Footer Section */
.footer {
  background-color: var(--color-neutral-950);
  color: var(--color-white);
  padding-top: var(--spacing-80);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--spacing-48);
  padding-bottom: var(--spacing-48);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
  height: 50px;
  width: auto;
  margin-bottom: var(--spacing-24);
}

.footer-col p {
  color: var(--color-neutral-300);
  margin-bottom: var(--spacing-24);
  max-width: 320px;
}

.footer-col h4 {
  color: var(--color-white);
  font-size: var(--font-size-h6);
  margin-bottom: var(--spacing-24);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-16);
}

.footer-links a {
  color: var(--color-neutral-300);
  font-size: var(--font-size-p2);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.social-links {
  display: flex;
  gap: var(--spacing-16);
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  transition: var(--transition-normal);
}

.social-icon:hover {
  background-color: var(--color-primary);
  transform: translateY(-3px);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-32) 0;
  font-size: var(--font-size-p3);
  color: var(--color-neutral-400);
}