/* MAIN HEADER */
.main-header {
  background-color: #fff;
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
}

.header-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.logo-section {
  flex-shrink: 0;
}

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

.search-container {
  flex: 0 0 auto;
  position: relative;
  width: 320px;
}

.search-input {
  width: 100%;
  padding: 12px 16px 12px 40px;
  border: 1px solid #505050;
  border-radius: 25px;
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.3s ease;
}

.search-input:focus {
  border-color: var(--primary-blue);
}

.search-input::placeholder {
  color: #999;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  font-size: 16px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 40px;
  flex: 1;
  justify-content: flex-end;
}

.header-nav ul {
  display: flex;
  gap: 32px;
  list-style: none;
}

.header-nav a {
  text-decoration: none;
  color: var(--text-dark);
  font-size: 13px;
  font-weight: 500;
  transition: color 0.3s ease;
}

.header-nav a:hover {
  color: var(--primary-blue);
}

.header-buttons {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

.btn {
  padding: 11px 24px;
  border-radius: 25px;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-login {
  border: 2px solid var(--primary-blue);
  background-color: transparent;
  color: var(--primary-blue);
}

.btn-login:hover {
  background-color: var(--primary-blue);
  color: var(--text-light);
}

.btn-join {
  background-color: var(--primary-blue);
  color: var(--text-light);
  border: 2px solid var(--primary-blue);
}

.btn-join:hover {
  background-color: #003d73;
  box-shadow: 0 5px 15px rgba(0, 84, 157, 0.3);
  transform: translateY(-2px);
}

/* MAIN NAVIGATION MENU */
.main-nav {
  background-color: #fff;
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 40px;
}

.nav-menu {
  display: flex;
  gap: 60px;
  list-style: none;
  padding: 16px 0;
}

.nav-item {
  text-decoration: none;
  color: var(--text-dark);
  font-size: 15px;
  font-weight: 600;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

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

.dropdown-arrow {
  font-size: 10px;
  transition: transform 0.3s ease;
  display: inline-block;
}

.menu-item:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.menu-item {
  position: relative;
}

/* Mega menu Hover Fix */
.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #fff;
  border: 1px solid #e0e0e0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  z-index: 1000;
  min-width: 950px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  margin-top: 0;
}

.menu-item:hover .submenu {
  display: flex;
  opacity: 1;
  visibility: visible;
}

/* Left sidebar with blue gradient background */
.submenu-left {
  flex: 0 0 310px;
  background: linear-gradient(180deg, #00549d 0%, #003d73 100%);
  padding: 40px 0;
  display: flex;
  flex-direction: column;
}

.submenu-left h3 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 8px 0;
  padding: 0 30px;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 3px solid #e30613;
  padding-bottom: 16px;
  margin-bottom: 24px;
}

.submenu-left ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.menu-option {
  padding: 16px 30px;
  color: #fff;
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
  display: block;
  border-left: 4px solid transparent;
}

.menu-option:hover,
.menu-option.active {
  background-color: #fff;
  color: #00549d;
  border-left-color: #e30613;
  font-weight: 600;
}

/* Right content area with white background */
.submenu-right {
  flex: 1;
  padding: 40px;
  background-color: #fff;
  position: relative;
  max-height: 520px;
  overflow-y: auto;
}

.submenu-panel {
  display: none;
}

.submenu-panel.active {
  display: block;
  animation: fadeInPanel 0.3s ease;
}

@keyframes fadeInPanel {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.submenu-panel h4 {
  font-size: 20px;
  font-weight: 700;
  color: #00549d;
  margin: 0 0 16px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.submenu-panel p {
  font-size: 14px;
  color: #666;
  margin: 0 0 32px 0;
  line-height: 1.6;
}

/* Grid layout for solution links */
.sol-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px 40px;
}

.sol-link-item {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sol-link-main {
  color: #00549d;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.2s ease;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  line-height: 1.5;
}

.sol-link-main:hover {
  color: #e30613;
  transform: translateX(4px);
}

.sol-link-main::after {
  content: "›";
  font-size: 20px;
  font-weight: 700;
  color: currentColor;
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.sol-link-main:hover::after {
  transform: translateX(4px);
}

/* Submenu items under main links */
.sol-submenu {
  display: none;
  margin-left: 28px;
  flex-direction: column;
  gap: 10px;
  padding-left: 20px;
  border-left: 2px solid #e0e0e0;
}

.sol-link-item:hover .sol-submenu {
  display: flex;
  animation: fadeInUp 0.2s ease;
}

.sol-submenu a {
  color: #666;
  text-decoration: none;
  font-size: 14px;
  font-weight: 400;
  transition: color 0.2s ease;
  line-height: 1.6;
  position: relative;
  padding-left: 12px;
}

.sol-submenu a::before {
  content: "›";
  position: absolute;
  left: 0;
  color: #999;
  font-size: 16px;
}

.sol-submenu a:hover {
  color: #00549d;
}

.sol-submenu a:hover::before {
  color: #e30613;
}

/*STICKY HEADER STYLES (DESKTOP/LAPTOP ONLY - 1024px and above)*/

.main-header.sticky {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  animation: slideDown 0.3s ease;
}

.main-nav.sticky {
  position: fixed;
  top: 100px;
  left: 0;
  right: 0;
  z-index: 999;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/*HAMBURGER MENU BUTTON STYLES (MOBILE) */

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 25px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
  transition: all 0.3s ease;
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background-color: var(--primary-blue);
  border-radius: 10px;
  transition: all 0.3s ease;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-menu-overlay.active {
  display: block;
  opacity: 1;
}

body.mobile-menu-open {
  overflow: hidden;
}

/*RESPONSIVE STYLES FOR HEADER*/

/* Hide mobile-only structure on desktop */
.submenu-mobile {
  display: none !important;
}

@media (max-width: 1200px) {
  .submenu {
    min-width: 750px;
  }

  .submenu-left {
    flex: 0 0 240px;
  }

  .sol-links {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* Complete mobile menu redesign */
@media (max-width: 1024px) {
  /* Show hamburger menu button */
  .mobile-menu-toggle {
    display: flex;
  }

  /* Hide desktop header elements */
  .header-nav,
  .header-buttons {
    display: none;
  }

  .header-container {
    flex-wrap: nowrap;
    padding: 0 20px;
  }

  .search-container {
    width: 200px;
  }

  /* Full screen mobile navigation with proper centering */
  .main-nav {
    position: fixed;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100vh;
    background-color: #fff;
    z-index: 1000;
    transition: left 0.3s ease;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
  }

  .main-nav.mobile-menu-active {
    left: 0;
  }

  .nav-container {
    width: 100%;
    max-width: 600px;
    padding: 0;
    margin: 0 auto;
  }

  .nav-menu {
    flex-direction: column;
    padding: 80px 0 40px 0;
    gap: 0;
    width: 100%;
  }

  .nav-menu > li {
    width: 100%;
    border-bottom: 1px solid #e5e7eb;
  }

  .nav-menu > li:last-child {
    border-bottom: none;
  }

  .nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    font-size: 16px;
    font-weight: 600;
    width: 100%;
  }

  .dropdown-arrow {
    font-size: 12px;
    transition: transform 0.3s ease;
  }

  .menu-item.submenu-open .dropdown-arrow {
    transform: rotate(180deg);
  }

  /* Hide desktop megamenu completely on mobile */
  .menu-item:hover .submenu {
    display: none;
  }

  .submenu {
    display: none;
    position: static;
    width: 100%;
    box-shadow: none;
    border: none;
    margin: 0;
    padding: 0;
    background-color: transparent;
    opacity: 1;
    visibility: visible;
  }

  .menu-item.submenu-open .submenu {
    display: block;
  }

  /* Hide desktop two-panel layout on mobile */
  .submenu-left,
  .submenu-right {
    display: none !important;
  }

  /* Show clean accordion-style mobile submenu */
  .submenu-mobile {
    display: block !important;
    width: 100%;
    background-color: #f8f9fa;
    padding: 0;
  }

  .mobile-submenu-section {
    border-bottom: 1px solid #e0e0e0;
  }

  .mobile-submenu-section:last-child {
    border-bottom: none;
  }

  .mobile-submenu-title {
    background: linear-gradient(90deg, #00549d 0%, #003d73 100%);
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 14px 24px;
    margin: 0;
    border-left: 4px solid #e30613;
  }

  .mobile-submenu-list {
    list-style: none;
    padding: 0;
    margin: 0;
    background-color: #fff;
  }

  .mobile-submenu-list li {
    border-bottom: 1px solid #f0f0f0;
  }

  .mobile-submenu-list li:last-child {
    border-bottom: none;
  }

  .mobile-submenu-list a {
    display: block;
    padding: 14px 24px 14px 32px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: all 0.2s ease;
    position: relative;
  }

  .mobile-submenu-list a::before {
    content: "›";
    position: absolute;
    left: 18px;
    color: #999;
    font-size: 18px;
    font-weight: 700;
  }

  .mobile-submenu-list a:hover {
    background-color: #f0f7ff;
    color: #00549d;
    padding-left: 36px;
  }

  .mobile-submenu-list a:hover::before {
    color: #e30613;
    left: 22px;
  }

  /* Disable sticky header on mobile */
  .main-header.sticky,
  .main-nav.sticky {
    position: relative;
    top: auto;
    box-shadow: none;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 0 16px;
  }

  .logo-img {
    height: 45px;
  }

  .search-container {
    width: 180px;
  }

  .mobile-menu-toggle {
    width: 28px;
    height: 22px;
  }

  .nav-container {
    max-width: 100%;
    padding: 0 16px;
  }

  .nav-menu {
    padding: 70px 0 30px 0;
  }

  .nav-item {
    font-size: 15px;
    padding: 14px 20px;
  }

  .mobile-submenu-title {
    font-size: 12px;
    padding: 12px 20px;
  }

  .mobile-submenu-list a {
    font-size: 13px;
    padding: 12px 20px 12px 28px;
  }

  .mobile-submenu-list a::before {
    left: 14px;
  }

  .mobile-submenu-list a:hover {
    padding-left: 32px;
  }

  .mobile-submenu-list a:hover::before {
    left: 18px;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: 0 12px;
  }

  .logo-img {
    height: 40px;
  }

  .search-container {
    display: none;
  }

  .mobile-menu-toggle {
    width: 26px;
    height: 20px;
  }

  .hamburger-line {
    height: 2.5px;
  }

  .nav-container {
    padding: 0 12px;
  }

  .nav-menu {
    padding: 60px 0 24px 0;
  }

  .nav-item {
    font-size: 14px;
    padding: 12px 16px;
  }

  .mobile-submenu-title {
    font-size: 11px;
    padding: 10px 16px;
  }

  .mobile-submenu-list a {
    font-size: 12px;
    padding: 10px 16px 10px 24px;
  }

  .mobile-submenu-list a::before {
    left: 10px;
    font-size: 16px;
  }

  .mobile-submenu-list a:hover {
    padding-left: 28px;
  }

  .mobile-submenu-list a:hover::before {
    left: 14px;
  }
}