:root {
  --primary-blue: #275DF5;
  --blue-color: #275DF5;
  --white-color: #ffffff;
  --text-dark: #333333;
  --text-grey: #808181;
  --bg-light: #f8f8f8;
  --border-light: #e0e0e0;
  --border-color: #E6E6E6;
  --sidebar-bg: #F4F9FF;
}


/* --- Header & Navigation --- */
.main-nav {
  display: flex;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
}

/* --- Mega Menu Container & Trigger Button --- */
.mega-menu-container {
  position: relative;
  margin-left: 300px;
  padding: 20px 0;
}

.all-courses-btn {
  background-color: var(--white-color);
  color: var(--blue-color);
  border: 1px solid var(--blue-color);
  padding: 8px 16px;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.all-courses-btn:hover {
  background-color: var(--blue-color);
  color: var(--white-color);
}

.theme-btn {
  border: 1px solid var(--blue-color);
  color: var(--blue-color);
  padding: 8px 16px;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.theme-btn:hover {
  background: var(--blue-color);
  color: var(--white-color);
}

/* --- Mega Menu Dropdown --- */
.mega-menu-dropdown {
  display: none;
  position: absolute;
  top: 75px;
  left: -491px;
  width: 1340px;
  background-color: #ffffff;
  border: 1px solid var(--border-light);
  border-top: 0;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  z-index: 999;
}

/* --- Show on Hover (Desktop) --- */
@media (min-width: 1025px) {
  .mega-menu-container:hover .mega-menu-dropdown {
    display: block;
  }
}

/* --- Mega Menu Wrapper (Grid Layout) --- */
.mega-menu-wrapper {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 450px;
}

/* --- LEFT COLUMN: Categories Sidebar --- */
.category-sidebar {
  background-color: var(--sidebar-bg);
  padding: 20px 0;
  border-right: 1px solid var(--border-light);
  overflow-y: auto;
}

.sidebar-heading {
  font-size: 0.8rem;
  color: var(--text-grey);
  text-transform: uppercase;
  padding: 0 20px;
  margin: 10px 0;
}

.category-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.category-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  cursor: pointer;
  color: var(--text-dark);
  font-size: 0.95rem;
  transition: background-color 0.2s, color 0.2s;
}

.category-item i {
  font-size: 0.7rem;
  color: var(--text-grey);
}

.category-item:hover,
.category-item.active {
  background-color: #ffffff;
  color: var(--primary-blue);
  border-left: 3px solid var(--primary-blue);
  padding-left: 17px;
}

.explore-all-btn {
  display: block;
  text-align: center;
  background: linear-gradient(90deg, #275DF5 0%, #78B9E2 100%);
  color: var(--white-color);
  padding: 8px 16px;
  margin: 10px 20px;
  text-decoration: none;
  font-weight: 600;
    border-radius: 6px;
  -webkit-border-radius: 6px;
  -moz-border-radius: 6px;
  -ms-border-radius: 6px;
  -o-border-radius: 6px;
}

/* --- RIGHT COLUMN: Course Content Area --- */
.course-content-area {
  padding: 20px;
}

.course-pane {
  display: none;
}

.course-pane.active {
  display: block;
}

.pane-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 5px;
}

.pane-subtitle {
  font-size: 0.9rem;
  color: var(--text-grey);
  margin-bottom: 20px;
}

.course-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.course-card-mega {
  border: 1px solid var(--border-light);
  padding: 10px;
  border-radius: 4px;
  position: relative;
  font-size: 0.85rem;
  transition: box-shadow 0.2s;
}

.course-card-mega:hover {
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.course-logo img {
  height: 20px;
  margin-bottom: 5px;
}

.course-title-mega {
  font-weight: 600;
  color: var(--text-dark);
}

.course-duration {
  color: var(--text-grey);
  margin-top: 2px;
}

.trending-badge,
.popular-badge {
  position: absolute;
  top: 5px;
  right: 5px;
  padding: 2px 5px;
  border-radius: 3px;
  font-size: 0.7rem;
  color: #fff;
}

.trending-badge {
  background-color: #28a745;
}

.popular-badge {
  background-color: #ffc107;
  color: var(--text-dark);
}

/* ================================================= */
/* --- Mobile/Tablet Responsive --- */
/* ================================================= */
@media (max-width: 1024px) {
  .mega-menu-dropdown {
    position: fixed;
    top: 75px;
    left: 0;
    width: 100vw;
    /* height: calc(100vh - 60px); */
    overflow-y: auto;

  }

  /* .mega-menu-wrapper {
    grid-template-columns: 1fr;
    min-height: auto;
  } */

  .category-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 10px;
  }

  .category-item {
    border-left: none !important;
    padding-left: 20px !important;
  }

  .course-cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .course-pane {
    display: none !important;
  }

  .course-pane.active {
    display: block !important;
  }
}

@media (max-width: 600px) {
  .course-cards-grid {
    grid-template-columns: 1fr;
  }
}

/* @media (max-width: 1200px) {

.mega-menu-container{
     margin-left: 40px;
}

} */