:root {
      --primary-blue: #002b5c;
      --secondary-blue: #004b9a;
      --accent-yellow: #ffb703;
      --light-gray: #f8f9fa;
      --dark-gray: #343a40;
      --success-green: #28a745;
      --transition: all 0.3s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: 'Poppins', sans-serif;
      background-color: #ffffff;
      color: #333;
      line-height: 1.7;
      overflow-x: hidden;
    }

    h1, h2, h3, h4, h5 {
      font-family: 'Playfair Display', serif;
      font-weight: 600;
      line-height: 1.3;
    }

    /* Header & Navigation */
    .navbar {
      background-color: var(--primary-blue);
      padding: 15px 0;
      transition: var(--transition);
      box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    }

    .navbar.scrolled {
      padding: 10px 0;
      background-color: rgba(0, 43, 92, 0.95);
    }

    .navbar-brand {
      display: flex;
      align-items: center;
      text-decoration: none;
    }

    .navbar-brand img {
      height: 50px;
      width: auto;
      margin-right: 12px;
      transition: var(--transition);
    }

    .navbar-brand span {
      font-weight: 700;
      color: white;
      font-size: 1.3rem;
    }

    .nav-link {
      color: rgba(255,255,255,0.9) !important;
      font-weight: 500;
      margin: 0 8px;
      transition: var(--transition);
      position: relative;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      width: 0;
      height: 2px;
      bottom: 0;
      left: 50%;
      background-color: var(--accent-yellow);
      transition: var(--transition);
      transform: translateX(-50%);
    }

    .nav-link:hover,
    .nav-link.active {
      color: var(--accent-yellow) !important;
    }

    .nav-link:hover::after,
    .nav-link.active::after {
      width: 100%;
    }

    .navbar-toggler {
      border: none;
      color: white;
      padding: 8px 10px;
    }

    .navbar-toggler:focus {
      box-shadow: none;
      outline: 2px solid var(--accent-yellow);
    }

    /* Hero Section for Program Studi */
    .program-hero {
      background: linear-gradient(135deg, rgba(0, 43, 92, 0.9) 0%, rgba(0, 75, 154, 0.85) 100%), 
                  url('https://images.unsplash.com/photo-1523050854058-8df90110c9f1?ixlib=rb-4.0.3&auto=format&fit=crop&w=2070&q=80');
      background-size: cover;
      background-position: center;
      color: white;
      padding: 180px 0 100px;
      text-align: center;
      position: relative;
    }

    .program-hero h1 {
      font-size: clamp(2.5rem, 5vw, 4rem);
      margin-bottom: 20px;
      font-weight: 700;
    }

    .program-hero p {
      font-size: clamp(1.1rem, 2vw, 1.4rem);
      max-width: 800px;
      margin: 0 auto 30px;
      opacity: 0.95;
    }

    .breadcrumb {
      background: transparent;
      justify-content: center;
      margin-bottom: 0;
    }

    .breadcrumb-item a {
      color: rgba(255,255,255,0.8);
      text-decoration: none;
    }

    .breadcrumb-item.active {
      color: var(--accent-yellow);
    }

    .breadcrumb-item+.breadcrumb-item::before {
      color: rgba(255,255,255,0.5);
    }

    /* Section Styling */
    section {
      padding: 80px 0;
    }

    .section-title {
      text-align: center;
      margin-bottom: 60px;
      position: relative;
    }

    .section-title::after {
      content: '';
      display: block;
      width: 80px;
      height: 4px;
      background: linear-gradient(90deg, var(--accent-yellow), var(--primary-blue));
      margin: 20px auto;
      border-radius: 2px;
    }

    .bg-light-custom {
      background-color: var(--light-gray);
    }

    /* Faculty Navigation */
    .faculty-nav {
      background: white;
      padding: 20px 0;
      box-shadow: 0 5px 15px rgba(0,0,0,0.08);
      position: sticky;
      top: 80px;
      z-index: 100;
    }

    .faculty-nav .nav-link {
      color: var(--dark-gray) !important;
      font-weight: 500;
      padding: 10px 20px;
      border-radius: 30px;
      transition: var(--transition);
    }

    .faculty-nav .nav-link.active,
    .faculty-nav .nav-link:hover {
      background: var(--primary-blue);
      color: white !important;
    }

    /* Program Cards */
    .program-card {
      border: none;
      border-radius: 15px;
      overflow: hidden;
      transition: var(--transition);
      height: 100%;
      background: white;
      box-shadow: 0 10px 30px rgba(0,0,0,0.08);
      position: relative;
    }

    .program-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 5px;
      background: linear-gradient(90deg, var(--primary-blue), var(--accent-yellow));
    }

    .program-card:hover {
      transform: translateY(-10px);
      box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    }

    .program-badge {
      position: absolute;
      top: 15px;
      right: 15px;
      background: var(--accent-yellow);
      color: #000;
      padding: 5px 15px;
      border-radius: 20px;
      font-size: 0.8rem;
      font-weight: 600;
      z-index: 2;
    }

    .program-icon {
      font-size: 3rem;
      color: var(--primary-blue);
      margin-bottom: 20px;
      transition: var(--transition);
    }

    .program-card:hover .program-icon {
      transform: scale(1.1);
      color: var(--accent-yellow);
    }

    .program-details {
      list-style: none;
      padding: 0;
      margin: 20px 0;
    }

    .program-details li {
      margin-bottom: 8px;
      display: flex;
      align-items: center;
    }

    .program-details i {
      color: var(--primary-blue);
      margin-right: 10px;
      width: 20px;
    }

    /* Faculty Sections */
    .faculty-section {
      padding: 80px 0;
    }

    .faculty-header {
      margin-bottom: 50px;
      text-align: center;
    }

    .faculty-icon {
      font-size: 4rem;
      color: var(--primary-blue);
      margin-bottom: 20px;
    }

    /* Comparison Table */
    .comparison-table {
      background: white;
      border-radius: 15px;
      overflow: hidden;
      box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    }

    .comparison-table th {
      background: var(--primary-blue);
      color: white;
      padding: 20px;
      text-align: left;
    }

    .comparison-table td {
      padding: 15px 20px;
      border-bottom: 1px solid #eee;
    }

    .comparison-table tr:last-child td {
      border-bottom: none;
    }

    .comparison-table tr:nth-child(even) {
      background: var(--light-gray);
    }

    /* CTA Section */
    .cta-section {
      background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
      color: white;
      text-align: center;
      padding: 80px 0;
    }

    .cta-btn {
      background-color: var(--accent-yellow);
      color: #000;
      font-weight: 600;
      border-radius: 50px;
      padding: 15px 35px;
      transition: var(--transition);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      border: none;
      cursor: pointer;
      box-shadow: 0 5px 15px rgba(255, 183, 3, 0.3);
    }

    .cta-btn:hover {
      background-color: #ffd166;
      transform: translateY(-3px);
      box-shadow: 0 10px 25px rgba(255, 183, 3, 0.4);
      color: #000;
    }

    /* Footer */
    footer {
      background: linear-gradient(135deg, var(--primary-blue), #001a38);
      color: white;
      padding: 80px 0 20px;
      position: relative;
    }

    footer::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 5px;
      background: linear-gradient(90deg, var(--accent-yellow), var(--primary-blue));
    }

    .footer-links h5 {
      color: var(--accent-yellow);
      margin-bottom: 25px;
      font-size: 1.2rem;
    }

    .footer-links ul {
      list-style: none;
      padding: 0;
    }

    .footer-links li {
      margin-bottom: 12px;
    }

    .footer-links a {
      color: rgba(255,255,255,0.8);
      text-decoration: none;
      transition: var(--transition);
    }

    .footer-links a:hover {
      color: var(--accent-yellow);
    }

    .social-icons a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 45px;
      height: 45px;
      background: rgba(255,255,255,0.1);
      border-radius: 50%;
      text-align: center;
      line-height: 45px;
      margin-right: 12px;
      transition: var(--transition);
      text-decoration: none;
    }

    .social-icons a:hover {
      background: var(--accent-yellow);
      color: #000;
      transform: translateY(-3px);
    }

    .copyright {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 25px;
      margin-top: 50px;
      text-align: center;
      font-size: 0.9rem;
      color: rgba(255,255,255,0.7);
    }

    /* Back to Top Button */
    .back-to-top {
      position: fixed;
      bottom: 30px;
      right: 30px;
      background: var(--accent-yellow);
      color: #000;
      width: 55px;
      height: 55px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      opacity: 0;
      visibility: hidden;
      transition: var(--transition);
      z-index: 1000;
      box-shadow: 0 5px 15px rgba(0,0,0,0.2);
      border: none;
      cursor: pointer;
    }

    .back-to-top.show {
      opacity: 1;
      visibility: visible;
    }

    .back-to-top:hover {
      background: #ffd166;
      transform: translateY(-3px);
      box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    }

    /* Responsive Design */
    @media (max-width: 992px) {
      .faculty-nav {
        position: static;
        top: auto;
      }
      
      .faculty-nav .nav {
        flex-wrap: wrap;
        justify-content: center;
      }
      
      .faculty-nav .nav-link {
        margin-bottom: 10px;
      }
    }

    @media (max-width: 768px) {
      .program-hero {
        padding: 150px 0 80px;
      }
      
      section {
        padding: 60px 0;
      }
      
      .faculty-section {
        padding: 60px 0;
      }
    }

    @media (max-width: 576px) {
      .program-hero {
        padding: 130px 0 60px;
      }
      
      .cta-btn {
        padding: 12px 25px;
        font-size: 0.9rem;
      }
    }