* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

     body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
     }

    /* Page Header */
    .page-header {
      background: #FF8C00;
      color: white;
      padding: 60px 20px;
      text-align: center;
    }

    .page-header h1 {
      font-size: 42px;
      margin-bottom: 15px;
      font-weight: 700;
    }

    .page-header p {
      font-size: 18px;
      opacity: 0.9;
      max-width: 600px;
      margin: 0 auto;
    }

    /* Course Container */
    .course-container {
      max-width: 1400px;
      margin: 0 auto;
      padding: 40px 20px;
    }

    /* Tab Navigation */
    .tab-navigation {
      display: flex;
      gap: 8px;
      overflow-x: auto;
      padding: 10px 0;
      margin-bottom: 40px;
      scrollbar-width: thin;
    }

    .tab-navigation::-webkit-scrollbar {
      height: 4px;
    }

    .tab-navigation::-webkit-scrollbar-track {
      background: #f1f1f1;
      border-radius: 10px;
    }

    .tab-navigation::-webkit-scrollbar-thumb {
      background: #6366f1;
      border-radius: 10px;
    }

    .tab-btn {
      padding: 12px 24px;
      background: white;
      border: 2px solid #e5e7eb;
      border-radius: 10px;
      font-size: 14px;
      font-weight: 600;
      color: #4b5563;
      cursor: pointer;
      transition: all 0.3s ease;
      white-space: nowrap;
      flex-shrink: 0;
    }

    .tab-btn:hover {
      border-color: #6366f1;
      color: #6366f1;
      transform: translateY(-2px);
    }

    .tab-btn.active {
      background: #FFC000;
      color: white;
      border-color: #6366f1;
    }

    /* Course Grid */
    .course-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-bottom: 40px;
    }

    .course-grid.show-all {
      grid-template-columns: repeat(4, 1fr);
    }

    /* Course Card */
    .course-card {
      background: white;
      border-radius: 12px;
      padding: 20px;
      box-shadow: 0 2px 8px rgba(99, 102, 241, 0.08);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      position: relative;
      overflow: hidden;
      border: 1px solid #f3f4f6;
    }

    .course-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3px;
      background: linear-gradient(90deg, #6366f1, #8b5cf6);
      transform: scaleX(0);
      transition: transform 0.3s ease;
    }

    .course-card:hover {
      box-shadow: 0 8px 24px rgba(99, 102, 241, 0.15);
      transform: translateY(-4px);
      border-color: #e0e7ff;
    }

    .course-card:hover::before {
      transform: scaleX(1);
    }

    .course-badge {
      display: inline-block;
      padding: 5px 12px;
      background: #ede9fe;
      color: #6366f1;
      font-size: 11px;
      font-weight: 600;
      border-radius: 12px;
      margin-bottom: 12px;
    }

    .badge-green {
      background: #d1fae5;
      color: #059669;
    }

    .badge-blue {
      background: #dbeafe;
      color: #2563eb;
    }

    .badge-orange {
      background: #fed7aa;
      color: #ea580c;
    }

    .course-icon {
      width: 56px;
      height: 56px;
      background: #FFC000;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
    }

    .course-icon img {
      width: 32px;
      height: 32px;
      filter: brightness(0) invert(1);
    }

    .course-name {
      font-size: 15px;
      font-weight: 700;
      color: #1f2937;
      margin-bottom: 8px;
      min-height: 42px;
      display: flex;
      align-items: center;
      justify-content: center;
      line-height: 1.4;
    }

    .course-price {
      font-size: 13px;
      color: #6b7280;
      margin-bottom: 12px;
    }

    .inquire-btn {
      width: 100%;
      padding: 10px 20px;
      background: #FFC000;
      color: white;
      border: none;
      border-radius: 8px;
      font-size: 13px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
      display: inline-block;
    }

    .inquire-btn:hover {
      background: #FFC000;
      transform: scale(1.02);
    }

    .course-card.hidden {
      display: none;
    }

    /* View All Button */
    .view-all-container {
      text-align: center;
      margin-top: 40px;
    }

    .view-all-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 14px 32px;
      background: white;
      color: #6366f1;
      border: 2px solid #6366f1;
      border-radius: 10px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
      text-decoration: none;
    }

    .view-all-btn:hover {
      background: #FFC000;
      color: white;
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    }

    .view-all-btn.hide {
      display: none;
    }

    /* Modal */
    .modal {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.6);
      z-index: 2000;
      align-items: center;
      justify-content: center;
      padding: 20px;
    }

    .modal.active {
      display: flex;
    }

    .modal-content {
      background: white;
      border-radius: 16px;
      max-width: 900px;
      width: 100%;
      max-height: 90vh;
      overflow-y: auto;
      display: grid;
      grid-template-columns: 1fr 1fr;
      box-shadow: 0 20px 60px rgba(99, 102, 241, 0.3);
    }

    .modal-left {
      background: #FFC000;
      padding: 40px;
      color: white;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-radius: 16px 0 0 16px;
    }

    .modal-course-icon {
      width: 80px;
      height: 80px;
      background: rgba(255, 255, 255, 0.2);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 20px;
    }

    .modal-course-icon img {
      width: 48px;
      height: 48px;
      filter: brightness(0) invert(1);
    }

    .modal-course-name {
      font-size: 24px;
      font-weight: 700;
      margin-bottom: 10px;
      text-align: center;
    }

    .modal-course-details {
      font-size: 16px;
      opacity: 0.9;
      text-align: center;
    }

    .modal-right {
      padding: 40px;
    }

    .modal-close {
      position: absolute;
      width: 36px;
      height: 36px;
      background: white;
      border: none;
      border-radius: 50%;
      font-size: 24px;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      transition: all 0.3s ease;
    }

    .modal-close:hover {
      background: #f3f4f6;
      transform: rotate(90deg);
    }

    .form-title {
      font-size: 26px;
      font-weight: 700;
      color: #1f2937;
      margin-bottom: 8px;
    }

    .form-subtitle {
      font-size: 14px;
      color: #6b7280;
      margin-bottom: 30px;
    }

    .form-group {
      margin-bottom: 20px;
    }

    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: #374151;
      margin-bottom: 8px;
    }

    .form-input {
      width: 100%;
      padding: 12px 16px;
      border: 2px solid #e5e7eb;
      border-radius: 8px;
      font-size: 14px;
      transition: all 0.3s ease;
    }

    .form-input:focus {
      outline: none;
      border-color: #6366f1;
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    }

    .submit-btn {
      width: 100%;
      padding: 14px;
      background: #FFC000;
      color: white;
      border: none;
      border-radius: 8px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .submit-btn:hover {
      background: #efbb1f;
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .course-grid {
        grid-template-columns: repeat(3, 1fr);
      }

      .course-grid.show-all {
        grid-template-columns: repeat(3, 1fr);
      }

      .modal-content {
        grid-template-columns: 1fr;
      }

      .modal-left {
        border-radius: 16px 16px 0 0;
      }

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

    @media (max-width: 768px) {
      .nav-links {
        display: none;
      }

      .mobile-menu-btn {
        display: block;
      }

      .page-header h1 {
        font-size: 32px;
      }

      .page-header p {
        font-size: 16px;
      }

      .course-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
      }

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

      .course-card {
        padding: 14px;
      }

      .course-name {
        font-size: 13px;
        min-height: 36px;
      }

      .course-icon {
        width: 48px;
        height: 48px;
      }

      .course-icon img {
        width: 28px;
        height: 28px;
      }

      .modal-content {
        max-width: 100%;
        border-radius: 8px;
        max-height: 85%;
      }

      .modal-left,
      .modal-right {
        padding: 30px 20px;
        border-radius: 8px;
      }
      .modal-close{
        right: 20px;
      }

    }