:root {
      --bs-primary: #4F46E5;
      --bs-primary-rgb: 79, 70, 229;
      --bs-secondary: #F59E0B;
      --bs-secondary-rgb: 245, 158, 11;
      --bs-tertiary: #F8FAFC;
      --bs-tertiary-rgb: 248, 250, 252;
      --primary: #4F46E5;
      --secondary: #F59E0B;
      --accent: #10B981;
      --tertiary: #F8FAFC;
    }

    * {
      -webkit-font-smoothing: antialiased;
    }

    body {
      font-family: 'Rubik', sans-serif;
      color: #334155;
      overflow-x: hidden; /* Prevents horizontal scroll from SVGs */
    }

    img {
      max-width: 100%;
      height: auto;
    }

    a {
      text-decoration: none;
      transition: 0.3s;
    }

    .btn-primary {
      background-color: var(--bs-primary);
      border-color: var(--bs-primary);
      border-radius: 8px;
      padding: 0.6rem 1.5rem;
      font-weight: 500;
      transition: 0.3s;
    }

    .btn-primary:hover {
      background-color: #4338CA;
      border-color: #4338CA;
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
    }

    /* Navbar */
    .navigation {
      background-color: var(--bs-tertiary) !important;
      box-shadow: 0 2px 10px rgba(0,0,0,0.03);
      position: sticky;
      top: 0;
      z-index: 1030;
    }

    .nav-link {
      font-weight: 500;
      color: #334155;
      padding: 0.5rem 1rem !important;
    }

    .nav-link:hover, .nav-link.active {
      color: var(--bs-primary);
    }

    /* Shapes & Sections */
    .has-shapes {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      pointer-events: none;
      z-index: 0;
      overflow: hidden;
    }
    
    .has-shapes svg {
      opacity: 0.4;
    }

    .container {
      position: relative;
      z-index: 2;
    }

    .section {
      padding: 5rem 0;
    }

    .section-sm {
      padding: 3rem 0;
    }

    .section-title h1, .section-title h2 {
      font-weight: 700;
      color: #1E293B;
    }

    .page-header {
      background-color: var(--bs-tertiary) !important;
      padding: 4rem 0;
    }

    .page-header h2 {
      font-weight: 700;
      color: #1E293B;
    }

    .bg-tertiary {
      background-color: var(--bs-tertiary) !important;
    }

    /* Form Styles */
    .form-control {
      border-radius: 8px;
      padding: 0.75rem 1rem;
      border: 1px solid #e2e8f0;
      color: #334155;
    }

    .form-control:focus {
      border-color: var(--bs-primary);
      box-shadow: 0 0 0 0.2rem rgba(var(--bs-primary-rgb), 0.15);
    }

    .form-label {
      font-weight: 500;
      color: #334155;
      margin-bottom: 0.5rem;
    }

    /* Contact Info */
    .contact-info-block {
      margin-bottom: 1.5rem;
    }
    
    .contact-info-block h4 {
      font-size: 1.1rem;
      font-weight: 600;
      color: #1E293B;
      margin-bottom: 0.5rem;
    }

    .contact-info-block a {
      color: var(--bs-primary);
      font-weight: 500;
    }

    .contact-info-block .content {
      color: #64748B;
      line-height: 1.8;
    }

    /* Other course input field - initially hidden */
    #otherCourseField {
      display: none;
    }

    /* Success/Error message styles */
    .alert-message {
      position: fixed;
      top: 90px;
      right: 20px;
      z-index: 9999;
      min-width: 300px;
      max-width: 350px;
      box-shadow: 0 10px 25px rgba(0,0,0,0.1);
      border-radius: 8px;
      border: none;
    }

    /* Footer */
    footer {
      background-color: var(--bs-tertiary) !important;
      padding-top: 4rem !important;
    }
    .footer-widget h5 {
      font-weight: 600;
      color: #1E293B;
    }
    .footer-widget ul li a {
      color: #64748B;
      font-size: 0.95rem;
    }
    .footer-widget ul li a:hover {
      color: var(--bs-primary);
      padding-left: 5px;
    }
    .social-icons a {
      color: #64748B;
      font-size: 1.2rem;
      transition: 0.3s;
    }
    .social-icons a:hover {
      color: var(--bs-primary);
      transform: translateY(-3px);
    }

    @media (max-width: 768px) {
      .section {
        padding: 3rem 0;
      }
      .page-header {
        padding: 2rem 0;
      }
      .alert-message {
        right: 15px;
        left: 15px;
        min-width: auto;
        max-width: 100%;
      }
    }