/* Table of Contents */
.table-of-contents {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    transition: all var(--transition-medium);
  }
  
  .toc-header {
    padding: var(--spacing-md);
    background-color: var(--primary-lightest);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .toc-header h2 {
    font-size: 1.25rem;
    margin-bottom: 0;
    padding-bottom: 0;
  }
  
  .toc-header h2:after {
    display: none;
  }
  
  .toc-toggle {
    background: transparent;
    color: var(--text-dark);
    padding: var(--spacing-xs);
    font-size: 1rem;
    transition: transform var(--transition-medium);
  }
  
  .toc-content {
    padding: var(--spacing-md);
    max-height: 400px;
    overflow-y: auto;
    transition: max-height var(--transition-medium);
  }
  
  .toc-content.collapsed {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    overflow: hidden;
  }
  
  .toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
  }
  
  .toc-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-sm);
    border-left: 2px solid var(--border-light);
    margin-bottom: var(--spacing-xs);
    color: var(--text-medium);
    transition: all var(--transition-fast);
  }
  
  .toc-item:hover {
    border-left-color: var(--primary-color);
    color: var(--primary-color);
    background-color: var(--primary-lightest);
    padding-left: var(--spacing-md);
  }
  
  /* Info Card */
  .info-card {
    background-color: var(--bg-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin: var(--spacing-lg) 0;
    border: 1px solid var(--border-light);
  }
  
  .info-card-header {
    background-color: var(--primary-lightest);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .info-card-header i {
    color: var(--primary-color);
    font-size: 1.25rem;
  }
  
  .info-card-header h3 {
    margin-bottom: 0;
    font-size: 1.1rem;
  }
  
  .info-card-content {
    padding: var(--spacing-md);
  }
  
  .info-card-content ul {
    margin-bottom: 0;
  }
  
  /* Requirements Card */
  .requirements-card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
  }
  
  .requirement-item {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  }
  
  .requirement-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
  }
  
  .requirement-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-lightest);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.25rem;
    flex-shrink: 0;
  }
  
  .requirement-content h4 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
  }
  
  .requirement-content p {
    margin-bottom: 0;
    color: var(--text-medium);
  }
  
  /* Process Timeline */
  .process-timeline {
    position: relative;
    margin: var(--spacing-xl) 0;
    padding-left: 30px;
  }
  
  .process-timeline:before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 11px;
    width: 2px;
    background-color: var(--border-light);
  }
  
  .timeline-item {
    position: relative;
    padding-bottom: var(--spacing-lg);
  }
  
  .timeline-marker {
    position: absolute;
    top: 0;
    left: -30px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 1;
  }
  
  .timeline-content {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-medium);
  }
  
  .timeline-content:hover {
    transform: translateX(5px);
  }
  
  .timeline-content h4 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
  }
  
  .timeline-content p {
    margin-bottom: 0;
    color: var(--text-medium);
  }
  
  /* Entrance Exams */
  .entrance-exams {
    margin-top: var(--spacing-xl);
  }
  
  .exam-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
  }
  
  .exam-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-medium);
    border: 1px solid var(--border-light);
  }
  
  .exam-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
  }
  
  .exam-card h5 {
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
  }
  
  .exam-card p {
    margin-bottom: 0;
    color: var(--text-medium);
    font-size: 0.9rem;
  }
  
  /* Semester Tabs */
  .semester-tabs {
    margin: var(--spacing-lg) 0;
  }
  
  .semester-tab-header {
    display: flex;
    border-bottom: 2px solid var(--border-light);
    margin-bottom: var(--spacing-md);
    overflow-x: auto;
    scrollbar-width: thin;
  }
  
  .semester-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text-medium);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
    white-space: nowrap;
  }
  
  .semester-tab:hover {
    color: var(--primary-color);
  }
  
  .semester-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 500;
  }
  
  .semester-tab-content {
    display: none;
    animation: fadeIn var(--transition-medium);
  }
  
  .semester-tab-content.active {
    display: block;
  }
  
  .subject-list {
    columns: 2;
    column-gap: var(--spacing-lg);
  }
  
  @media (max-width: 600px) {
    .subject-list {
      columns: 1;
    }
  }
  
  .practical-components {
    margin-top: var(--spacing-xl);
    background-color: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary-color);
  }
  
  /* Fee Comparison */
  .fee-comparison {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
  }
  
  .fee-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    border: 1px solid var(--border-light);
  }
  
  .fee-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
  }
  
  .fee-card.featured {
    border-color: var(--primary-color);
    box-shadow: 0 4px 20px rgba(255, 121, 0, 0.15);
  }
  
  .fee-card-header {
    background-color: var(--secondary-color);
    color: var(--text-white);
    padding: var(--spacing-md);
    text-align: center;
  }
  
  .fee-card.featured .fee-card-header {
    background-color: var(--primary-color);
  }
  
  .fee-card-header h4 {
    margin-bottom: 0;
    color: var(--text-white);
  }
  
  .fee-card-content {
    padding: var(--spacing-md);
    text-align: center;
  }
  
  .fee-range {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
  }
  
  .fee-card.featured .fee-range {
    color: var(--primary-color);
  }
  
  .fee-card-content p {
    color: var(--text-medium);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
  }
  
  .fee-card-content ul {
    text-align: left;
    padding-left: var(--spacing-lg);
    margin-bottom: 0;
  }
  
  .fee-card-content ul li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-medium);
  }
  
  /* Additional Costs */
  .additional-costs {
    margin-top: var(--spacing-xl);
  }
  
  .cost-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
  }
  
  .cost-item {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-medium);
  }
  
  .cost-item:hover {
    transform: translateY(-5px);
  }
  
  .cost-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
  }
  
  .cost-item h5 {
    margin-bottom: var(--spacing-xs);
  }
  
  .cost-item p {
    margin-bottom: 0;
    color: var(--text-medium);
    font-weight: 500;
  }
  
  /* Financial Aid */
  .financial-aid {
    margin-top: var(--spacing-xl);
    background-color: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
  }
  
  .financial-aid ul li {
    margin-bottom: var(--spacing-sm);
  }
  
  /* Related Courses */
  .related-courses {
    background-color: var(--bg-light);
    padding: var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
  }
  
  .related-courses h2 {
    margin-bottom: var(--spacing-xl);
    display: inline-block;
    position: relative;
  }
  
  .related-courses h2:after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .course-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: var(--container-width);
    margin: 0 auto;
  }
  
  .course-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  }
  
  .course-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
  }
  
  .course-image img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    transition: transform var(--transition-slow);
  }
  
  .course-card:hover .course-image img {
    transform: scale(1.05);
  }
  
  .course-content {
    padding: var(--spacing-md);
    text-align: left;
  }
  
  .course-content h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.2rem;
  }
  
  .course-content p {
    color: var(--text-medium);
    margin-bottom: var(--spacing-md);
    min-height: 50px;
  }
  
  .course-content .btn {
    width: 100%;
  }




  /* Site Footer */
.site-footer {
    background-color: var(--secondary-dark);
    color: var(--text-white);
    padding-top: var(--spacing-xxl);
  }
  
  .footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
  }
  
  .footer-top {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-xxl);
  }
  
  .footer-column h3 {
    color: var(--text-white);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    position: relative;
  }
  
  .footer-column h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary-color);
  }
  
  .footer-logo {
    margin-bottom: var(--spacing-md);
  }
  
  .footer-logo .logo-text {
    font-size: 1.8rem;
  }
  
  .footer-column p {
    margin-bottom: var(--spacing-md);
    color: var(--text-medium);
    line-height: 1.5;
  }
  
  .social-links {
    display: flex;
    gap: var(--spacing-sm);
  }
  
  .social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    transition: all var(--transition-fast);
  }
  
  .social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
  }
  
  .footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }
  
  .footer-column ul li {
    margin-bottom: var(--spacing-sm);
  }
  
  .footer-column ul li a {
    color: var(--text-medium);
    transition: all var(--transition-fast);
  }
  
  .footer-column ul li a:hover {
    color: var(--primary-color);
    padding-left: var(--spacing-xs);
  }
  
  .contact-info li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    color: var(--text-medium);
  }
  
  .contact-info li i {
    color: var(--primary-color);
    margin-top: 4px;
  }
  
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-lg) 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
  }
  
  .copyright p {
    margin-bottom: 0;
    color: var(--text-light);
    font-size: 0.9rem;
  }
  
  .footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }
  
  .footer-links a {
    color: var(--text-light);
    font-size: 0.9rem;
  }
  
  .footer-links a:hover {
    color: var(--primary-color);
  }

  /* Site Header */
.site-header {
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all var(--transition-medium);
  }
  
  .header-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  
  .logo {
    display: flex;
    align-items: center;
  }
  
  .logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
  }
  
  .logo-text:before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    margin-right: 5px;
    position: relative;
    top: -3px;
  }
  
  .main-nav {
    display: flex;
    align-items: center;
  }
  
  .nav-list {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: var(--spacing-lg);
  }
  
  .nav-list li a {
    color: var(--text-dark);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
  }
  
  .nav-list li a:hover {
    color: var(--primary-color);
  }
  
  .nav-list li a:after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-medium);
  }
  
  .nav-list li a:hover:after,
  .nav-list li a.active:after {
    width: 100%;
  }
  
  .nav-list li a.active {
    color: var(--primary-color);
  }
  
  .header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
  }
  
  .header-actions button {
    background: transparent;
    color: var(--text-dark);
    padding: var(--spacing-xs);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
  }
  
  .header-actions button:hover {
    background-color: var(--primary-lightest);
    color: var(--primary-color);
    transform: translateY(-2px);
  }
  
  /* Search Container */
  .search-container {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-white);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    display: none;
    z-index: 1000;
  }
  
  .search-container.active {
    display: block;
    animation: slideDown var(--transition-medium);
  }
  
  .search-box {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
  }
  
  .search-box input {
    flex: 1;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: none;
    padding-left: var(--spacing-lg);
    font-size: 1.1rem;
  }
  
  .search-box button {
    background-color: var(--primary-color);
    color: var(--text-white);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    padding: var(--spacing-sm) var(--spacing-lg);
  }
  
  .search-suggestions {
    max-width: 600px;
    margin: var(--spacing-md) auto 0;
  }
  
  .suggestion-group h4 {
    font-size: 0.9rem;
    color: var(--text-medium);
    margin-bottom: var(--spacing-sm);
  }
  
  .suggestion-group ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }
  
  .suggestion-group ul li a {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-light);
    border-radius: var(--radius-sm);
    color: var(--text-medium);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
  }
  
  .suggestion-group ul li a:hover {
    background-color: var(--primary-lightest);
    color: var(--primary-color);
  }
  
  /* Mobile Menu Toggle */
  .mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
  }
  
  .mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-dark);
    transition: all var(--transition-fast);
  }
  
  /* Hero Section */
  .hero-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: var(--text-white);
    padding: var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
    position: relative;
  }
  
  .hero-content {
    max-width: 800px;
    margin: 0 auto;
    animation: fadeIn 1s ease-out;
  }
  
  .hero-content h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-white);
  }
  
  .subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
  }
  
  .hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
  }
  
  .last-updated {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-lg);
    font-size: 0.85rem;
    opacity: 0.8;
  }
  
  @keyframes slideDown {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
  }
  
  /* Scroll Behavior */
  .site-header.scrolled {
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xs) 0;
  }

  :root {
    --primary-color: #ff7900;
    --primary-dark: #e66d00;
    --primary-light: #ff9133;
    --primary-lightest: #fff0e6;
    
    --secondary-color: #2c3e50;
    --secondary-light: #34495e;
    --secondary-dark: #1a2530;
    
    --accent-color: #3498db;
    --accent-dark: #2980b9;
    
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --error-color: #e74c3c;
    
    --text-dark: #2c3e50;
    --text-medium: #546e7a;
    --text-light: #78909c;
    --text-white: #ffffff;
    
    --bg-light: #f5f7fa;
    --bg-white: #ffffff;
    --bg-dark: #263238;
    
    --border-light: #e0e6ed;
    --border-medium: #b0bec5;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --container-width: 1200px;
    --content-width: 760px;
    --sidebar-width: 340px;
  }
  
  /* Dark Mode Variables */
  .dark-mode {
    --primary-color: #ff7900;
    --primary-dark: #e66d00;
    --primary-light: #ff9133;
    --primary-lightest: #3d2e27;
    
    --text-dark: #e0e6ed;
    --text-medium: #b0bec5;
    --text-light: #78909c;
    
    --bg-light: #1a2530;
    --bg-white: #263238;
    --bg-dark: #0f1419;
    
    --border-light: #34495e;
    --border-medium: #546e7a;
  }
  
  /* Base Styles */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
    font-size: 16px;
  }
  
  body {
    font-family: var(--font-family);
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
  }
  
  a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
  }
  
  a:hover {
    color: var(--primary-dark);
  }
  
  h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
  }
  
  h1 {
    font-size: 2.5rem;
    font-weight: 700;
  }
  
  h2 {
    font-size: 2rem;
    position: relative;
    padding-bottom: var(--spacing-sm);
  }
  
  h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  h4 {
    font-size: 1.25rem;
  }
  
  p {
    margin-bottom: var(--spacing-md);
  }
  
  ul, ol {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
  }
  
  img {
    max-width: 100%;
    height: auto;
    display: block;
  }
  
  button, .btn {
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    transition: all var(--transition-fast);
  }
  
  .btn {
    display: inline-block;
    text-align: center;
  }
  
  .primary-btn {
    background-color: var(--primary-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
  }
  
  .primary-btn:hover {
    background-color: var(--primary-dark);
    color: var(--text-white);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
  }
  
  .secondary-btn {
    background-color: var(--secondary-color);
    color: var(--text-white);
  }
  
  .secondary-btn:hover {
    background-color: var(--secondary-light);
    color: var(--text-white);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
  }
  
  .outline-btn {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
  }
  
  .outline-btn:hover {
    background-color: var(--primary-color);
    color: var(--text-white);
  }
  
  input, textarea, select {
    font-family: var(--font-family);
    font-size: 1rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    background-color: var(--bg-white);
    color: var(--text-dark);
    transition: border-color var(--transition-fast);
    width: 100%;
  }
  
  input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
  }
  
  /* Layout */
  .content-wrapper {
    display: flex;
    flex-wrap: wrap;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--spacing-lg);
    gap: var(--spacing-xl);
  }
  
  .main-content {
    flex: 1;
    min-width: 0;
    max-width: var(--content-width);
  }
  
  .sidebar {
    width: var(--sidebar-width);
  }
  
  /* Utility Classes */
  .text-center {
    text-align: center;
  }
  
  .text-right {
    text-align: right;
  }
  
  .flex {
    display: flex;
  }
  
  .flex-column {
    flex-direction: column;
  }
  
  .items-center {
    align-items: center;
  }
  
  .justify-between {
    justify-content: space-between;
  }
  
  .justify-center {
    justify-content: center;
  }
  
  .gap-sm {
    gap: var(--spacing-sm);
  }
  
  .gap-md {
    gap: var(--spacing-md);
  }
  
  .gap-lg {
    gap: var(--spacing-lg);
  }
  
  .mt-sm { margin-top: var(--spacing-sm); }
  .mt-md { margin-top: var(--spacing-md); }
  .mt-lg { margin-top: var(--spacing-lg); }
  .mb-sm { margin-bottom: var(--spacing-sm); }
  .mb-md { margin-bottom: var(--spacing-md); }
  .mb-lg { margin-bottom: var(--spacing-lg); }
  
  /* Common Components */
  .content-section {
    margin-bottom: var(--spacing-xxl);
    padding: var(--spacing-lg);
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
  }
  
  .content-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-xxl) 0;
  }
  
  .divider-line {
    flex: 1;
    height: 1px;
    background-color: var(--border-light);
  }
  
  .divider-icon {
    padding: 0 var(--spacing-md);
    color: var(--primary-color);
    font-size: 1.25rem;
  }
  
  .newsletter-subscription {
    background-color: var(--primary-lightest);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xxl);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
  }
  
  .subscription-content {
    flex: 1;
    min-width: 250px;
  }
  
  .subscription-content h3 {
    margin-bottom: var(--spacing-sm);
  }
  
  .subscription-form {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    max-width: 500px;
    flex: 1;
  }
  
  .subscription-form input {
    flex: 1;
    min-width: 200px;
  }
  
  /* Back to Top Button */
  #back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--text-white);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
    z-index: 100;
    box-shadow: var(--shadow-md);
  }
  
  #back-to-top.visible {
    opacity: 1;
    visibility: visible;
  }
  
  #back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
  }
  
  /* Animations */
  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  
  @keyframes slideUp {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
  }
  
  @keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
  }

  /* Responsive Styles */

/* Large Devices (Desktops) */
@media screen and (max-width: 1200px) {
    :root {
      --container-width: 960px;
      --content-width: 640px;
      --sidebar-width: 280px;
    }
  
    .hero-content h1 {
      font-size: 2.5rem;
    }
  
    .content-wrapper {
      padding: var(--spacing-lg) var(--spacing-md);
    }
  }
  
  /* Medium Devices (Tablets) */
  @media screen and (max-width: 991px) {
    :root {
      --container-width: 720px;
    }
  
    .content-wrapper {
      flex-direction: column;
    }
  
    .main-content, .sidebar {
      width: 100%;
      max-width: 100%;
    }
  
    .sidebar {
      margin-top: var(--spacing-xl);
      position: static;
    }
  
    .hero-content h1 {
      font-size: 2.2rem;
    }
  
    .subtitle {
      font-size: 1.1rem;
    }
  
    .hero-cta {
      flex-direction: column;
      gap: var(--spacing-sm);
    }
  
    .hero-cta .btn {
      width: 100%;
    }
  
    .subject-list {
      columns: 1;
    }
  
    .fee-comparison, .cost-items {
      grid-template-columns: 1fr;
    }
  
    .semester-tab {
      padding: var(--spacing-sm) var(--spacing-md);
    }
  }
  
  /* Small Devices (Landscape Phones) */
  @media screen and (max-width: 767px) {
    :root {
      --container-width: 540px;
    }
  
    body {
      font-size: 15px;
    }
  
    h1 {
      font-size: 2rem;
    }
  
    h2 {
      font-size: 1.75rem;
    }
  
    .header-container {
      padding: var(--spacing-sm);
    }
  
    .main-nav {
      position: fixed;
      top: 0;
      left: -100%;
      width: 80%;
      height: 100vh;
      background-color: var(--bg-white);
      z-index: 1001;
      flex-direction: column;
      align-items: flex-start;
      padding: var(--spacing-xl) var(--spacing-md);
      box-shadow: var(--shadow-lg);
      transition: left var(--transition-medium);
    }
  
    .main-nav.active {
      left: 0;
    }
  
    .nav-list {
      flex-direction: column;
      gap: var(--spacing-md);
      width: 100%;
    }
  
    .nav-list li a {
      display: block;
      padding: var(--spacing-sm);
      border-bottom: 1px solid var(--border-light);
    }
  
    .mobile-menu-toggle {
      display: flex;
    }
  
    .mobile-menu-toggle.active span:first-child {
      transform: rotate(45deg) translate(5px, 5px);
    }
  
    .mobile-menu-toggle.active span:nth-child(2) {
      opacity: 0;
    }
  
    .mobile-menu-toggle.active span:last-child {
      transform: rotate(-45deg) translate(5px, -5px);
    }
  
    .hero-section {
      padding: var(--spacing-xl) var(--spacing-md);
    }
  
    .hero-content h1 {
      font-size: 2rem;
    }
  
    .last-updated {
      position: static;
      margin-top: var(--spacing-md);
      text-align: center;
    }
  
    .subscription-form {
      flex-direction: column;
    }
  
    .newsletter-subscription {
      text-align: center;
    }
  
    .author-profile {
      flex-direction: column;
      text-align: center;
    }
  
    .author-info h3:after {
      left: 50%;
      transform: translateX(-50%);
    }
  
    .footer-top {
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }
  
    .footer-bottom {
      flex-direction: column;
      text-align: center;
    }
  
    .footer-links {
      justify-content: center;
    }
  
    .related-courses {
      padding: var(--spacing-xl) var(--spacing-md);
    }
  
    .course-cards {
      grid-template-columns: 1fr;
    }
  }
  
  /* Extra Small Devices (Portrait Phones) */
  @media screen and (max-width: 575px) {
    :root {
      --container-width: 100%;
      --spacing-lg: 16px;
      --spacing-xl: 24px;
      --spacing-xxl: 32px;
    }
  
    body {
      font-size: 14px;
    }
  
    h1 {
      font-size: 1.8rem;
    }
  
    h2 {
      font-size: 1.5rem;
    }
  
    .content-wrapper, .header-container, .footer-container {
      padding-left: var(--spacing-md);
      padding-right: var(--spacing-md);
    }
  
    .hero-content h1 {
      font-size: 1.8rem;
    }
  
    .content-section {
      padding: var(--spacing-md);
    }
  
    .requirements-card {
      grid-template-columns: 1fr;
    }
  
    .semester-tab-header {
      justify-content: flex-start;
    }
  
    .semester-tab {
      padding: var(--spacing-xs) var(--spacing-sm);
    }
  
    .entrance-exams .exam-cards {
      grid-template-columns: 1fr;
    }
  
    .info-card-header {
      flex-direction: column;
      text-align: center;
    }
  
    #back-to-top {
      right: 15px;
      bottom: 15px;
    }
  }

  /* Sidebar */
.sidebar {
  position: sticky;
  top: 100px;
}

/* Author Profile */
.author-profile {
  background-color: var(--bg-white);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-image {
  width: 150px;
  height: 80px;
  overflow: hidden;
  border: 3px solid var(--primary-lightest);
}

.author-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-info h3 {
  font-size: 0.9rem;
  color: var(--text-medium);
  margin-bottom: var(--spacing-xs);
}

.author-name {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-dark);
}

.author-bio {
  font-size: 0.9rem;
  color: var(--text-medium);
  line-height: 1.4;
  margin-bottom: 0;
}

/* Sidebar Widgets */
.sidebar-widget {
  background-color: var(--bg-white);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.sidebar-widget h3 {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--border-light);
}

/* Popular Posts */
.popular-posts ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.popular-posts ul li {
  margin-bottom: var(--spacing-md);
}

.popular-posts ul li:last-child {
  margin-bottom: 0;
}

.popular-posts ul li a {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-dark);
}

.popular-posts ul li a:hover {
  color: var(--primary-color);
}

.post-image {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.post-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-info h4 {
  font-size: 0.95rem;
  margin-bottom: var(--spacing-xs);
  transition: color var(--transition-fast);
  line-height: 1.3;
}

.post-date {
  font-size: 0.8rem;
  color: var(--text-light);
}

/* Topic Tags */
.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.topic-tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--bg-light);
  border-radius: var(--radius-sm);
  color: var(--text-medium);
  font-size: 0.85rem;
  transition: all var(--transition-fast);
}

.topic-tag:hover {
  background-color: var(--primary-lightest);
  color: var(--primary-color);
  transform: translateY(-2px);
}

/* Quick Links */
.quick-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.quick-links ul li {
  border-bottom: 1px solid var(--border-light);
}

.quick-links ul li:last-child {
  border-bottom: none;
}

.quick-links ul li a {
  display: block;
  padding: var(--spacing-sm) 0;
  color: var(--text-dark);
  transition: all var(--transition-fast);
}

.quick-links ul li a:hover {
  color: var(--primary-color);
  padding-left: var(--spacing-sm);
}

.quick-links ul li a i {
  color: var(--primary-color);
  margin-right: var(--spacing-xs);
  font-size: 0.8rem;
  transition: transform var(--transition-fast);
}

.quick-links ul li a:hover i {
  transform: translateX(3px);
}

/* Sidebar CTA */
.sidebar-cta {
  background-color: var(--primary-lightest);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  text-align: center;
}

.sidebar-cta h3 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  border-bottom: none;
}

.sidebar-cta p {
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
}

.sidebar-cta .btn {
  width: 100%;
}



.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
  }
  
  .popup-container {
    width: 90%;
    max-width: 1100px;
    background: #fff;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    position: relative;
    padding: 20px;
  }
  
  .popup-content {
    display: flex;
    flex-direction: row;
    gap: 20px;
  }
  
  .popup-left {
    flex: 1;
  }
  
  .popup-left h3 {
    font-size: 18px;
    margin-bottom: 15px;
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-bottom: 20px;
  }
  
  .features-grid div {
    padding: 8px 10px;
    background: #f9f9f9;
    border-radius: 6px;
  }
  
  .testimonial {
    font-style: italic;
    margin-top: 10px;
  }
  
  .popup-right {
    flex: 1;
  }
  
  .popup-right h2 {
    font-size: 20px;
    color: var(--primary-color);
  }
  
  .popup-right form {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  
  .popup-right input,
  .popup-right select {
    padding: 10px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 5px;
  }
  
  .submit-btn {
    background: var(--primary-color);
    color: white;
    padding: 10px;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease;
  }
  
  .submit-btn:hover {
    background: var(--primary-dark);
  }
  
  .terms, .login-link {
    font-size: 12px;
    margin-top: 5px;
  }
  
  .login-link a {
    color: var(--primary-color);
  }
  
  .close-popup {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-dark);
    transition: color 0.3s ease;
  }
  
  .close-popup:hover {
    color: var(--primary-color);
  }
  
  @media (max-width: 768px) {
    .popup-container {
      padding: 15px;
    }
  
    .popup-content {
      flex-direction: column;
      gap: 10px;
    }
  
    .popup-left {
      display: none;
    }
  
    .popup-right {
      width: 100%;
    }
  
    .popup-right h2 {
      font-size: 18px;
    }
  
    .popup-right p {
      font-size: 14px;
    }
  
    .popup-right input,
    .popup-right select {
      font-size: 13px;
      padding: 8px;
    }
  
    .submit-btn {
      font-size: 15px;
    }
  
    .terms, .login-link {
      font-size: 11px;
    }
  }