body {
      background-color: #121212;
      color: #f5f5f5;
      min-height: 100vh;
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      display: flex;
      flex-direction: column;
    }

    /* Navbar */
    .navbar {
      background: linear-gradient(to right, #1e1e1e, #ff6f3c);
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
      padding: 0;
      width: 100%;
      top: 0;
      z-index: 1030;
    }

    .navbar .container {
      max-width: 1200px;
    }

    .navbar-brand {
      color: #fff !important;
      font-weight: bold;
      font-size: 1.5rem;
      display: flex;
      align-items: center;
      text-decoration: none;
      padding-left: 1rem;
    }

    .navbar-brand i {
      color: #ffcf4d;
      margin-right: 10px;
    }

    .navbar-nav .nav-link,
    .dropdown-item {
      color: #fff !important;
      font-weight: 500;
      transition: color 0.3s;
      font-size: 1rem;
    }

    .navbar-nav .nav-link:hover,
    .dropdown-item:hover,
    .navbar-nav .nav-link.active {
      color: #ffcf4d !important;
    }

    .dropdown-menu {
      background: #1e1e1e;
      border: 1px solid #ff6f3c;
    }

    .dropdown-item i {
      color: #ffcf4d;
    }

    /* Hero */
    .hero {
      background: linear-gradient(rgba(30,30,30,0.9),rgba(255,111,60,0.2)), url('https://www.ar-wp.com/wp-content/uploads/2021/06/%D8%A8%D9%88%D8%A7%D8%A8%D8%A7%D8%AA-%D8%A7%D9%84%D8%AF%D9%81%D8%B9-%D8%B9%D9%84%D9%89-%D9%85%D8%AA%D8%A7%D8%AC%D8%B1-%D9%88%D9%88%D9%83%D9%88%D9%85%D8%B1%D8%B3-%D9%88%D9%83%D9%8A%D9%81-%D8%AA%D8%AE%D8%AA%D8%A7%D8%B1-%D9%85%D9%86%D9%87%D8%A7-%D8%A7%D9%84%D9%85%D9%86%D8%A7%D8%B3%D8%A8-%D9%84%D9%83.jpg') center/cover;
      min-height: 400px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      color: #fff;
      margin-bottom: 2rem;
      padding: 3rem 1rem 2rem 1rem;
    }

    .hero h1 {
      font-size: 3rem;
      margin-bottom: 1rem;
    }

    .hero p {
      font-size: 1.2rem;
      max-width: 700px;
      margin-bottom: 2rem;
    }

    .btn {
      background: #ffcf4d;
      color: #121212;
      border: none;
      border-radius: 5px;
      font-weight: bold;
      padding: 0.8rem 1.5rem;
      transition: all 0.3s;
      text-decoration: none;
    }

    .btn:hover {
      background: #ffc123;
      color: #121212;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 2rem 1rem;
    }

    .section-title {
      font-size: 2rem;
      margin-bottom: 2rem;
      text-align: center;
      color: #ffcf4d;
    }

    .bills-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 2rem;
      margin-bottom: 3rem;
    }

    .bill-card {
      background: #1e1e1e;
      border-radius: 8px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
      transition: transform 0.3s;
    }

    .bill-card:hover {
      transform: translateY(-5px);
    }

    .bill-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      display: block;
      background: #333;
    }

    .bill-info {
      padding: 1.5rem;
    }

    .bill-title {
      font-size: 1.3rem;
      margin-bottom: 0.5rem;
      color: #ffcf4d;
    }

    .bill-description {
      color: #b8b8b8;
      margin-bottom: 1rem;
    }

    .bill-features {
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
      margin-bottom: 1rem;
    }

    .feature-tag {
      background: #4a4a4a;
      color: #fff;
      padding: 0.2rem 0.6rem;
      border-radius: 12px;
      font-size: 0.8rem;
    }

    .bill-action {
      display: flex;
      justify-content: flex-end;
      margin-top: 1rem;
    }

    .pay-btn {
      background: #ff6f3c;
      color: #fff;
      border: none;
      padding: 0.6rem 1.2rem;
      border-radius: 4px;
      font-weight: bold;
      transition: all 0.3s;
      width: 100%;
      text-align: center;
    }

    .pay-btn:hover {
      background: #ffcf4d;
      color: #121212;
    }

    /* Payment Modal */
    .modal-content {
      background: #232323;
      color: #fff;
      border-radius: 10px;
    }

    .modal-header {
      background: linear-gradient(to right, #1e1e1e, #ff6f3c);
      color: white;
      border-bottom: none;
    }

    .form-label {
      color: #ffcf4d;
    }

    .form-control, .form-select {
      background: #181818;
      color: #fff;
      border: 1px solid #ff6f3c;
    }

    .form-control:focus, .form-select:focus {
      background: #232323;
      border-color: #ffcf4d;
      box-shadow: 0 0 0 0.2rem rgba(255,207,77,0.15);
      color: #fff;
    }

    /* Payment Methods */
    .payment-methods {
      display: flex;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
      gap: 15px;
      margin-top: 20px;
    }

    .payment-method {
      background: white;
      padding: 10px;
      border-radius: 8px;
      width: 80px;
      height: 50px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .payment-method img {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
    }

    /* Footer */
    .footer {
      background: #1a1a1a;
      color: #fff;
      padding: 2.5rem 1rem 1.5rem 1rem;
      margin-top: auto;
      border-top: 1px solid #ff6f3c;
      text-align: center;
    }

    .footer-logo {
      font-size: 1.3rem;
      font-weight: bold;
      color: #ffcf4d;
      margin-bottom: 1rem;
    }

    .footer-links {
      display: flex;
      justify-content: center;
      gap: 2rem;
      margin-bottom: 1.2rem;
      flex-wrap: wrap;
    }

    .footer-link {
      color: #b8b8b8;
      text-decoration: none;
      transition: color 0.3s;
    }

    .footer-link:hover {
      color: #ffcf4d;
    }

    .social-links {
      display: flex;
      justify-content: center;
      gap: 1rem;
      margin-bottom: 1.2rem;
    }

    .social-link {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: #2a2a2a;
      display: flex;
      justify-content: center;
      align-items: center;
      color: #fff;
      text-decoration: none;
      font-size: 1.1rem;
      transition: all 0.3s;
    }

    .social-link:hover {
      background: #ffcf4d;
      color: #121212;
    }

    .copyright {
      color: #666;
      font-size: 0.9rem;
      margin-top: 1rem;
    }

    @media (max-width: 768px) {
      .hero h1 {
        font-size: 2.2rem;
      }

      .hero p {
        font-size: 1rem;
      }

      .section-title {
        font-size: 1.7rem;
      }

      .footer-links {
        flex-direction: column;
        gap: 0.5rem;
      }
    }