/* ============================================
   COURSES PAGE STYLES
   CoreClasses - Course Listing Page
   ============================================ */

/* ===== PAGE HERO / BREADCRUMB ===== */
.page-hero {
    padding: var(--spacing-3xl) 0 var(--spacing-4xl);
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    text-align: center;
  }
  
  .breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
  }
  
  .breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
  }
  
  .breadcrumb a:hover {
    color: var(--color-secondary);
    text-decoration: underline;
  }
  
  .breadcrumb .separator {
    color: var(--color-gray-400);
  }
  
  .breadcrumb .current {
    color: var(--color-dark);
    font-weight: var(--font-weight-semibold);
  }
  
  .page-title {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-heading);
  }
  
  .page-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
  }
  
  /* ===== COURSE FILTERS ===== */
  .course-filters {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
  }
  
  .filter-btn {
    padding: var(--spacing-sm) var(--spacing-xl);
    background-color: var(--color-white);
    color: var(--color-gray-700);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
  }
  
  .filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
  }
  
  .filter-btn.active {
    background-color: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
  }
  
  /* ===== COURSES CATEGORY SECTION ===== */
  .courses-category-section {
    padding: var(--spacing-4xl) 0;
    background-color: var(--color-white);
  }
  
  .courses-category-section:nth-child(even) {
    background-color: var(--color-gray-50);
  }
  
  /* Category Header */
  .category-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--color-gray-200);
  }
  
  .category-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  
  .category-emoji {
    font-size: 40px;
  }
  
  .category-header-content {
    flex: 1;
  }
  
  .category-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-heading);
  }
  
  .category-description {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
  }
  
  .btn-youtube-category {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-fast);
  }
  
  .btn-youtube-category:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
  
  /* ===== COURSES GRID ===== */
  .courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
  }
  
  /* ===== COURSE CARD ===== */
  .course-card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 2px solid var(--color-gray-200);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
  }
  
  .course-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
  }
  
  /* Course Image */
  .course-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background-color: var(--color-gray-100);
  }
  
  .course-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
  }
  
  .course-card:hover .course-image img {
    transform: scale(1.05);
  }
  
  .course-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: var(--spacing-md);
  }
  
  /* Course Badge */
  .course-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
  }
  
  .course-badge.beginner {
    background-color: #10b981;
    color: var(--color-white);
  }
  
  .course-badge.intermediate {
    background-color: #f59e0b;
    color: var(--color-white);
  }
  
  .course-badge.advanced {
    background-color: #ef4444;
    color: var(--color-white);
  }
  
  /* Favorite Button */
  .btn-favorite {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-gray-600);
  }
  
  .btn-favorite:hover {
    background-color: var(--color-white);
    color: var(--color-danger);
    transform: scale(1.1);
  }
  
  .btn-favorite.active {
    color: var(--color-danger);
  }
  
  .btn-favorite.active svg {
    fill: currentColor;
  }
  
  /* Course Content */
  .course-content {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    flex: 1;
  }
  
  .course-header-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
  }
  
  .course-category {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-medium);
  }
  
  .course-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-warning);
    font-weight: var(--font-weight-semibold);
  }
  
  .course-rating svg {
    color: var(--color-warning);
  }
  
  .course-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-heading);
    line-height: var(--line-height-tight);
  }
  
  .course-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
  }
  
  /* Course Features List */
  .course-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-xl) 0;
    flex: 1;
  }
  
  .course-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-normal);
  }
  
  .course-features li svg {
    flex-shrink: 0;
    color: var(--color-success);
  }
  
  .course-features li:last-child {
    margin-bottom: 0;
  }
  
  /* Course Footer */
  .course-footer {
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
  }
  
  .course-actions {
    display: flex;
    gap: var(--spacing-sm);
  }
  
  .btn-outline-course {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
  }
  
  .btn-outline-course:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
  }
  
  .btn-primary-course {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-accent);
    color: var(--color-white);
    border: 2px solid var(--color-accent);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
  }
  
  .btn-primary-course:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
  }
  
  /* ===== WHY UPGRADE SECTION ===== */
  .why-upgrade-section {
    padding: var(--spacing-4xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, #667eea 100%);
    color: var(--color-white);
  }
  
  .why-upgrade-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
  }
  
  .why-upgrade-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
  }
  
  .why-upgrade-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
  }
  
  .why-upgrade-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto;
    line-height: var(--line-height-relaxed);
  }
  
  .upgrade-benefits-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
  }
  
  .upgrade-benefit-card {
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
  }
  
  .upgrade-benefit-card:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-5px);
  }
  
  .benefit-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
  }
  
  .benefit-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
  }
  
  .benefit-description {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    line-height: var(--line-height-relaxed);
  }
  
  /* ===== COURSE GUIDANCE SECTION ===== */
  .course-guidance-section {
    padding: var(--spacing-4xl) 0;
    background-color: #fff8f0;
  }
  
  .guidance-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
  }
  
  .guidance-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-lg);
    background-color: #ffedd5;
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-lg);
  }
  
  .guidance-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-heading);
  }
  
  .guidance-description {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
  }
  
  .guidance-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
  }
  
  .btn-whatsapp-large {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    background-color: var(--color-whatsapp);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-lg);
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-lg);
  }
  
  .btn-whatsapp-large:hover {
    background-color: var(--color-whatsapp-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
  }
  
  .btn-outline-large {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-2xl);
    background-color: var(--color-white);
    color: var(--color-dark);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    font-family: var(--font-heading);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    transition: all var(--transition-fast);
  }
  
  .btn-outline-large:hover {
    background-color: var(--color-gray-100);
    border-color: var(--color-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
  }
  
  /* ===== RESPONSIVE DESIGN ===== */
  
  /* Large Desktop */
  @media (max-width: 1200px) {
    .courses-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: var(--spacing-xl);
    }
    
    .upgrade-benefits-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  /* Tablet */
  @media (max-width: 992px) {
    .page-title {
      font-size: var(--font-size-4xl);
    }
    
    .category-header {
      flex-direction: column;
      text-align: center;
    }
    
    .category-icon-wrapper {
      width: 60px;
      height: 60px;
    }
    
    .category-emoji {
      font-size: 32px;
    }
    
    .category-title {
      font-size: var(--font-size-2xl);
    }
    
    .courses-grid {
      grid-template-columns: repeat(2, 1fr);
    }
    
    .upgrade-benefits-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }
  
  /* Mobile Large */
  @media (max-width: 768px) {
    .page-hero {
      padding: var(--spacing-2xl) 0;
    }
    
    .page-title {
      font-size: var(--font-size-3xl);
    }
    
    .page-subtitle {
      font-size: var(--font-size-base);
    }
    
    .course-filters {
      gap: var(--spacing-sm);
    }
    
    .filter-btn {
      padding: var(--spacing-xs) var(--spacing-lg);
      font-size: var(--font-size-xs);
    }
    
    .courses-category-section {
      padding: var(--spacing-3xl) 0;
    }
    
    .category-header {
      margin-bottom: var(--spacing-2xl);
    }
    
    .courses-grid {
      grid-template-columns: 1fr;
      gap: var(--spacing-xl);
    }
    
    .course-image {
      height: 200px;
    }
    
    .course-actions {
      flex-direction: column;
    }
    
    .btn-outline-course,
    .btn-primary-course {
      width: 100%;
    }
    
    .why-upgrade-section {
      padding: var(--spacing-3xl) 0;
    }
    
    .why-upgrade-title {
      font-size: var(--font-size-3xl);
    }
    
    .upgrade-benefits-grid {
      grid-template-columns: 1fr;
      gap: var(--spacing-lg);
    }
    
    .guidance-title {
      font-size: var(--font-size-2xl);
    }
    
    .guidance-description {
      font-size: var(--font-size-base);
    }
    
    .guidance-actions {
      flex-direction: column;
    }
    
    .btn-whatsapp-large,
    .btn-outline-large {
      width: 100%;
      justify-content: center;
    }
  }
  
  /* Mobile Small */
  @media (max-width: 480px) {
    .page-title {
      font-size: var(--font-size-2xl);
    }
    
    .course-card {
      border-radius: var(--radius-lg);
    }
    
    .course-content {
      padding: var(--spacing-lg);
    }
    
    .course-title {
      font-size: var(--font-size-lg);
    }
    
    .category-title {
      font-size: var(--font-size-xl);
    }
    
    .why-upgrade-title {
      font-size: var(--font-size-2xl);
    }
    
    .benefit-icon {
      width: 60px;
      height: 60px;
    }
    
    .benefit-icon svg {
      width: 32px;
      height: 32px;
    }
  }
  
  /* ===== COURSE CARD ANIMATIONS ===== */
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(30px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  .course-card {
    animation: fadeInUp 0.6s ease-out;
  }
  
  .course-card:nth-child(1) {
    animation-delay: 0.1s;
  }
  
  .course-card:nth-child(2) {
    animation-delay: 0.2s;
  }
  
  .course-card:nth-child(3) {
    animation-delay: 0.3s;
  }
  
  /* ===== HIDDEN STATE FOR FILTERS ===== */
  .course-card.hidden {
    display: none;
  }
  
  /* ===== EMPTY STATE (No courses found) ===== */
  .courses-empty-state {
    text-align: center;
    padding: var(--spacing-4xl) 0;
  }
  
  .courses-empty-state h3 {
    font-size: var(--font-size-2xl);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
  }
  
  .courses-empty-state p {
    font-size: var(--font-size-base);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
  }
  
  /* ===== LOADING STATE ===== */
  .courses-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4xl) 0;
  }
  
  .loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
  }
  
  @keyframes spin {
    to {
      transform: rotate(360deg);
    }
  }
  
  /* ===== PRINT STYLES ===== */
  @media print {
    .page-hero,
    .course-filters,
    .btn-youtube-category,
    .btn-favorite,
    .course-actions,
    .why-upgrade-section,
    .course-guidance-section {
      display: none !important;
    }
    
    .course-card {
      break-inside: avoid;
      page-break-inside: avoid;
    }
    
    .courses-grid {
      grid-template-columns: 1fr;
    }
  }
  

/* ===== SEARCH BAR STYLES ===== */
.course-search-wrapper {
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
  }
  
  .search-input-group {
    position: relative;
    display: flex;
    align-items: center;
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-full);
    padding: var(--spacing-sm) var(--spacing-lg);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
  }
  
  .search-input-group:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-light);
  }
  
  .search-icon {
    flex-shrink: 0;
    color: var(--color-gray-500);
    margin-right: var(--spacing-md);
    transition: color var(--transition-fast);
  }
  
  .search-input-group:focus-within .search-icon {
    color: var(--color-primary);
  }
  
  .search-input {
    flex: 1;
    border: none;
    outline: none;
    font-size: var(--font-size-base);
    color: var(--color-dark);
    background: transparent;
    padding: var(--spacing-xs) 0;
    font-family: var(--font-body);
  }
  
  .search-input::placeholder {
    color: var(--color-gray-500);
  }
  
  .search-input::-webkit-search-cancel-button {
    -webkit-appearance: none;
    appearance: none;
  }
  
  .search-clear-btn {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    border: none;
    background-color: var(--color-gray-200);
    color: var(--color-gray-600);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-left: var(--spacing-sm);
  }
  
  .search-clear-btn:hover {
    background-color: var(--color-gray-300);
    color: var(--color-dark);
    transform: scale(1.1);
  }
  
  .search-clear-btn:active {
    transform: scale(0.95);
  }
  
  .search-results-count {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    animation: fadeIn 0.3s ease;
  }
  
  #results-text {
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
  }
  
  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(-10px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  /* Search highlight effect */
  .search-highlight {
    background-color: #fef3c7;
    color: #92400e;
    padding: 2px 4px;
    border-radius: 3px;
    font-weight: var(--font-weight-semibold);
  }
  
  /* No results message */
  .no-results-message {
    text-align: center;
    padding: var(--spacing-4xl) var(--spacing-xl);
    animation: fadeIn 0.5s ease;
  }
  
  .no-results-message svg {
    width: 80px;
    height: 80px;
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-lg);
  }
  
  .no-results-message h3 {
    font-size: var(--font-size-2xl);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
  }
  
  .no-results-message p {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
  }
  
  .no-results-suggestions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
  }
  
  .suggestion-chip {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
  }
  
  .suggestion-chip:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
  }
  
  /* Responsive Search Bar */
  @media (max-width: 768px) {
    .course-search-wrapper {
      margin-bottom: var(--spacing-lg);
    }
    
    .search-input-group {
      padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .search-input {
      font-size: var(--font-size-sm);
    }
    
    .search-input::placeholder {
      font-size: var(--font-size-xs);
    }
    
    .search-icon {
      width: 20px;
      height: 20px;
    }
  }
  
  @media (max-width: 480px) {
    .search-input::placeholder {
      content: "Search courses...";
    }
  }