:root {
        --primary: #D4A017; /* Elegant gold */
        --secondary: #B8974A; /* Muted metallic gold */
        --light: #F8F8F8; /* Clean neutral */
        --dark: #2A2A2A; /* Deep charcoal */
      }

      * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: 'Heebo', sans-serif;
      }

      .navbar {
        background-color: var(--primary);
      }

      .navbar-brand, .navbar-nav .nav-link {
        color: var(--dark) !important;
        margin-right: 15px;
      }

      /* .navbar-nav .nav-link:hover {
        color: var(--secondary) !important;
      } */

      .navbar-nav .dropdown:hover .dropdown-menu {
        display: block;
        margin-top: 5px;
      }

      .navbar-toggler {
        background-color: var(--secondary);
        border: none;
        border-radius: 50px;
        padding: 10px 15px;
      }

      .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23F8F8F8' stroke-width='3' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
      }

      .dropdown-menu {
        background-color: var(--primary);
      }

      .dropdown-item {
        color: var(--dark) !important;
      }

      .dropdown-item:hover {
        background-color: var(--secondary);
        color: var(--light) !important;
      }

      /* Container Styling */
      .payment-container {
        display: flex;
        justify-content: center;
        align-items: center;
        height: 100vh;
        background: var(--light);
      }

      /* Card Styling */
      .payment-card {
        background: var(--light);
        padding: 25px;
        text-align: center;
        border-radius: 12px;
        box-shadow: 0px 5px 15px rgba(0, 0, 0, 0.2);
        max-width: 400px;
        width: 100%;
        animation: fadeIn 0.5s ease-in-out;
      }

      .payment-card h2 {
        color: var(--primary);
        font-size: 24px;
      }

      .payment-card p {
        color: var(--dark);
        font-size: 16px;
      }

      /* Button Styling */
      .pay-btn {
        background: var(--primary);
        color: var(--dark);
        border: none;
        padding: 12px 20px;
        font-size: 18px;
        border-radius: 8px;
        cursor: pointer;
        transition: 0.3s;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
      }

      .pay-btn:hover {
        background: var(--secondary);
      }

      /* Spinner Loader */
      .spinner {
        display: none;
        border: 4px solid rgba(255, 255, 255, 0.3);
        border-top: 4px solid var(--light);
        border-radius: 50%;
        width: 18px;
        height: 18px;
        animation: spin 0.6s linear infinite;
        margin-left: 10px;
      }

      @keyframes spin {
        from {
          transform: rotate(0deg);
        }
        to {
          transform: rotate(360deg);
        }
      }

      /* Secure Payment Note */
      .secure-note {
        margin-top: 10px;
        font-size: 14px;
        color: var(--dark);
      }

      .secure-note i {
        color: var(--primary);
        margin-right: 5px;
      }

      /* Fade-in Animation */
      @keyframes fadeIn {
        from {
          opacity: 0;
          transform: translateY(-10px);
        }
        to {
          opacity: 1;
          transform: translateY(0);
        }
      }