:root {
  --iitk-blue: #002349;
  --iitk-red: #b91c1c;
  --iitk-gold: #e2b347;
  --accent-gold: #facc15;
  --light-text: #ffffff;
  --dark-text: #333333;
  --hover-blue: #003366;
  --header-link-bg: #f2f2f2;
  --header-link-color: #333333;
  --header-text-color: rgb(0, 0, 0);
  --site-padding-x: 40px;
  --nav-link-padding-x: 12px;
  --nav-link-font-size: 0.95rem;
  --light-gray: #f8fafc;
  --dark-gray: #1f2937;
  --text-dark: #111827;
  --mega-col-base-width: 250px;
}

.iitk-header-container {
  font-family: sans-serif;
  color: var(--dark-text);
  padding-top: 10px;
  background-color: var(--light-text);
}

.iitk-header-container .main-header {
  background-color: var(--light-text);
  padding: 0;
  border-bottom: 1px solid #e0e0e0;
}

.iitk-header-container .header-content {
  /* padding: 15px var(--site-padding-x); */
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.iitk-header-container .logo {
  height: 70px;
  width: auto;
  min-width: 60px;
}

.iitk-header-container .header-text h1 {
  font-size: 2rem;
  font-weight: 700;
  color: black;
  margin-bottom: 0;
  line-height: 1.2;
}

.iitk-header-container .header-text h2 {
  font-size: 1rem;
  font-weight: 400;
  color: #555555;
  margin-top: 5px;
  line-height: 1.2;
}

.iitk-header-container .header-links-right {
  display: flex;
  align-items: center;
  background-color: var(--header-link-bg);
  padding: 8px 15px;
  border-radius: 5px;
  gap: 15px;
}

.iitk-header-container .header-links-right a {
  color: var(--header-link-color);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  transition: color 0.3s ease;
  display: flex;
  align-items: center;
  white-space: nowrap;
}

.iitk-header-container .header-links-right a:hover {
  color: var(--iitk-gold);
}

.iitk-header-container .header-links-right i {
  font-size: 1rem;
  margin-right: 5px;
  color: var(--iitk-gold);
}

/* NAVBAR STYLES */
.iitk-header-container .navbar {
  background-color: var(--iitk-blue) !important;
  padding: 4px 0;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  border-bottom: 3px solid var(--iitk-gold);
  transition: padding 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

.iitk-header-container .navbar.sticky {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1020;
  padding: 3px 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.iitk-header-container .navbar .navbar-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  margin-right: 15px;
  margin-left: -10px;
  opacity: 0;
  transform: translateX(-30px) scale(0.7);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  position: relative;
}

.iitk-header-container .navbar.sticky .navbar-brand {
  opacity: 1;
  transform: translateX(0) scale(1);
  pointer-events: auto;
}

.iitk-header-container .navbar .navbar-brand .sticky-logo {
  height: 40px;
  width: auto;
  max-height: 100%;
  object-fit: contain;
}

/* Add padding to body when navbar becomes sticky */
body.navbar-sticky {
  padding-top: 75px;
}

.iitk-header-container .navbar-content {
  max-width: 100%;
  padding-left: var(--site-padding-x);
  padding-right: var(--site-padding-x);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.iitk-header-container .navbar-nav .nav-item {
  margin-right: 5px;
  position: relative;
}

.iitk-header-container .navbar-nav .nav-link {
  color: var(--light-text) !important;
  font-weight: 500;
  padding: 8px var(--nav-link-padding-x);
  border-radius: 5px;
  transition: background-color 0.3s ease, color 0.3s ease;
  display: flex;
  align-items: center;
  white-space: nowrap;
  font-size: var(--nav-link-font-size);
}

.iitk-header-container .navbar.sticky .navbar-nav .nav-link {
  padding: 6px var(--nav-link-padding-x);
}

.iitk-header-container .navbar-nav .nav-link:hover,
.iitk-header-container .navbar-nav .nav-link.active {
  background-color: var(--hover-blue);
  color: var(--iitk-gold) !important;
}

.iitk-header-container .navbar-nav .nav-link i {
  margin-right: 5px;
}

/* DROPDOWN STYLES */
.iitk-header-container .dropdown-menu {
  background-color: var(--iitk-blue);
  border: none;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  padding: 10px 0;
  border-radius: 5px;
  margin-top: 0;
  display: none;
  position: absolute;
  z-index: 1000;
  min-width: 220px;
  left: 0;
}

.iitk-header-container .dropdown-menu .dropdown-item {
  color: var(--light-text);
  padding: 3px 10px;
  transition: background-color 0.2s ease, color 0.2s ease;
  white-space: normal;
  word-break: break-word;
}

.iitk-header-container .dropdown-menu .dropdown-item:hover {
  background-color: var(--hover-blue);
  color: var(--iitk-gold);
}

.iitk-header-container .dropdown-menu .dropdown-header {
  color: var(--iitk-gold);
  font-weight: 600;
  padding: 3px 5px 5px;
  font-size: 0.9rem;
  text-transform: uppercase;
  white-space: normal;
  word-break: break-word;
}

.iitk-header-container .dropdown-menu .dropdown-divider {
  border-color: rgba(255, 255, 255, 0.1);
  margin: 5px 0;
}

/* MEGA MENU STYLES */
.iitk-header-container .mega-menu {
  background-color: var(--iitk-blue);
  padding: 20px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  border-radius: 5px;
  position: absolute;
  z-index: 1000;
  top: 100%;
  left: 0;
  display: none;
}

/* NEWS & EVENTS - 2 COLUMN LAYOUT */
.iitk-header-container .mega-menu.news-events {
  min-width: 500px;
  max-width: 500px;
}

.iitk-header-container .mega-menu.news-events .row {
  margin: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.iitk-header-container .mega-menu.news-events .mega-col {
  flex: 1;
  padding: 0 15px;
  border-right: 1px solid rgba(255, 255, 255, 0.3);
  min-width: 0;
  max-width: calc(50% - 15px);
}

.iitk-header-container .mega-menu.news-events .mega-col:last-child {
  border-right: none;
}

/* INITIATIVES - MULTI COLUMN LAYOUT */
.iitk-header-container .mega-menu.initiatives {
  min-width: 600px;
  max-width: 1000px;
}

.iitk-header-container .mega-menu.initiatives .row {
  margin: 0 -10px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
}

.iitk-header-container .mega-menu.initiatives .mega-col {
  flex: 1;
  padding: 0 10px;
  margin-bottom: 15px;
  border-right: 1px solid rgba(255, 255, 255, 0.3);
  min-width: 280px;
  max-width: calc(33.333% - 20px);
}

.iitk-header-container .mega-menu.initiatives .row .mega-col:nth-child(3n) {
  border-right: none;
}

.iitk-header-container .mega-menu.initiatives .row:last-child .mega-col {
  margin-bottom: 0;
}

.iitk-header-container .mega-menu.initiatives .mega-col:last-child {
  border-right: none !important;
}

/* SEARCH FORM */
.iitk-header-container .navbar .input-group {
  width: 220px;
  flex-shrink: 0;
}

.iitk-header-container .navbar .form-control {
  background-color: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--light-text);
  border-right: none;
  border-radius: 0.375rem 0 0 0.375rem;
}

.iitk-header-container .navbar .form-control::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.iitk-header-container .navbar .form-control:focus {
  background-color: rgba(255, 255, 255, 0.2);
  border-color: var(--iitk-gold);
  box-shadow: 0 0 0 0.25rem rgba(226, 179, 71, 0.25);
}

.iitk-header-container .navbar .btn-outline-light {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--light-text);
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 0 0.375rem 0.375rem 0;
}

.iitk-header-container .navbar .btn-outline-light:hover {
  background-color: var(--iitk-gold);
  border-color: var(--iitk-gold);
  color: var(--iitk-blue);
}

/* MOBILE RESPONSIVE STYLES */
@media (max-width: 992px) {
  :root {
    --site-padding-x: 20px;
  }

  .iitk-header-container .logo {
    height: 50px;
    min-width: 40px;
  }

  .iitk-header-container .header-text h1 {
    font-size: 1.6rem;
  }

  .iitk-header-container .header-text h2 {
    font-size: 0.85rem;
  }

  .iitk-header-container .header-links-right {
    padding: 5px 10px;
    gap: 8px;
  }

  .iitk-header-container .header-links-right a {
    font-size: 0.8rem;
  }

  .iitk-header-container .navbar .input-group {
    width: 160px;
  }
}

@media (max-width: 768px) {
  :root {
    --site-padding-x: 15px;
  }

  body.navbar-sticky {
    padding-top: 65px;
  }

  .iitk-header-container .navbar .navbar-brand .sticky-logo {
    height: 32px;
  }

  .iitk-header-container .navbar .navbar-brand {
    display: none;
  }

  .iitk-header-container .header-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 15px;
  }

  .iitk-header-container .logo {
    height: 45px;
  }

  .iitk-header-container .header-links-right {
    width: 100%;
    justify-content: center;
  }

  .iitk-header-container .navbar-content {
    flex-direction: column;
    align-items: center;
  }

  .iitk-header-container .navbar-nav {
    width: 100%;
    text-align: center;
  }

  .iitk-header-container .navbar-nav .nav-item {
    margin-right: 0;
    width: 100%;
  }

  .iitk-header-container .navbar-nav .nav-link {
    font-size: 1rem;
    padding: 15px 20px;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
  }

  .iitk-header-container .dropdown-menu,
  .iitk-header-container .mega-menu {
    position: static !important;
    float: none !important;
    width: 100% !important;
    min-width: 100% !important;
    max-width: 100% !important;
    margin-top: 0 !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.1) !important;
    background-color: rgba(0, 35, 73, 0.95) !important;
    display: none !important;
    transform: none !important;
    left: auto !important;
    top: auto !important;
    right: auto !important;
    padding: 5px 0 !important;
    max-height: 70vh !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
  }

  /* Custom scrollbar for mobile mega menus */
  .iitk-header-container .dropdown-menu::-webkit-scrollbar,
  .iitk-header-container .mega-menu::-webkit-scrollbar {
    width: 6px;
  }

  .iitk-header-container .dropdown-menu::-webkit-scrollbar-track,
  .iitk-header-container .mega-menu::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
  }

  .iitk-header-container .dropdown-menu::-webkit-scrollbar-thumb,
  .iitk-header-container .mega-menu::-webkit-scrollbar-thumb {
    background: var(--iitk-gold);
    border-radius: 3px;
  }

  .iitk-header-container .dropdown-menu::-webkit-scrollbar-thumb:hover,
  .iitk-header-container .mega-menu::-webkit-scrollbar-thumb:hover {
    background: var(--accent-gold);
  }

  .iitk-header-container .nav-item.dropdown.show > .dropdown-menu,
  .iitk-header-container .nav-item.dropdown.show > .mega-menu {
    display: block !important;
  }

  .iitk-header-container .mega-menu .row {
    flex-direction: column !important;
    margin: 0 !important;
    width: 100% !important;
  }

  .iitk-header-container .mega-menu .mega-col {
    flex: none !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 100% !important;
    border-right: none !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
    padding: 8px 10px !important;
    margin: 0 !important;
    box-sizing: border-box !important;
  }

  .iitk-header-container .mega-menu .mega-col:last-child {
    border-bottom: none !important;
  }

  .iitk-header-container .dropdown-menu .dropdown-item,
  .iitk-header-container .mega-menu .dropdown-item {
    padding: 10px 15px !important;
    font-size: 0.9rem !important;
    color: var(--light-text) !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    display: block !important;
    width: 100% !important;
    text-align: left !important;
    border: none !important;
    background: none !important;
  }

  .iitk-header-container .dropdown-menu .dropdown-item:hover,
  .iitk-header-container .mega-menu .dropdown-item:hover {
    background-color: var(--hover-blue) !important;
    color: var(--iitk-gold) !important;
  }

  .iitk-header-container .dropdown-menu .dropdown-header,
  .iitk-header-container .mega-menu .dropdown-header {
    padding: 10px 15px 5px !important;
    font-size: 0.8rem !important;
    font-weight: 600 !important;
    color: var(--iitk-gold) !important;
    text-transform: uppercase !important;
  }

  .iitk-header-container .navbar-toggler {
    border: none;
    padding: 4px 8px;
  }

  .iitk-header-container .navbar-toggler:focus {
    box-shadow: none;
  }

  .iitk-header-container .navbar .input-group {
    width: 100%;
    max-width: 300px;
    margin: 15px auto 0;
  }
}

@media (max-width: 576px) {
  :root {
    --site-padding-x: 10px;
  }

  .iitk-header-container .header-text h1 {
    font-size: 1.4rem;
  }

  .iitk-header-container .header-text h2 {
    font-size: 0.8rem;
  }

  .iitk-header-container .header-links-right a {
    font-size: 0.75rem;
  }

  .iitk-header-container .navbar .input-group {
    width: 100%;
    max-width: 280px;
  }
}

@media (max-width: 360px) {
  :root {
    --site-padding-x: 8px;
  }

  .iitk-header-container .header-text h1 {
    font-size: 1.2rem;
  }

  .iitk-header-container .header-text h2 {
    font-size: 0.75rem;
  }
}