html {
      scroll-behavior: smooth;
    }

    /* Shutter Effect */
    .shutter-card {
      position: relative;
      overflow: hidden;
      height: 100%;
      width: 100%;
      max-width: 350px;
      border-radius: 12px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      box-shadow: 0 4px 10px rgba(0,0,0,0.15);
      background: #fff;
    }
    .shutter-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }
    .shutter-overlay {
      position: absolute;
      align: center;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.8);
      transform: translateY(-100%);
      display: flex;
      justify-content: center;
      align-items: center;
      flex-direction: column;
      color: #fff;
      transition: transform 0.6s ease-in-out;
      text-align: center;
      padding: 20px;
    }
    .shutter-card:hover .shutter-overlay {
      transform: translateY(0);
    }
    .card-title {
      background: #fff;
      color: #4C1D95;
      text-align: center;
      font-size: 1.5rem;
      font-weight: bold;
      padding: 12px 8px;
      border-top: 1px solid #e5e7eb;
    }
    .shutter-content h3 {
      font-size: 2.1rem;
      font-weight: 700;
      margin-bottom: 8px;
    }
    .shutter-content p {
      font-size: 0.85rem;
      color: #e5e7eb;
    }

    /* Theme Colors */
    body {
      background-color: #F3F4F6;
    }
    nav a {
      color: #4C1D95;
      font-weight: 600;
      transition: color 0.3s ease;
    }
    nav a:hover {
      color: #F97316;
    }
    .btn-primary {
      background: linear-gradient(to right, #6D28D9, #4C1D95);
      color: #fff;
      padding: 12px 24px;
      font-weight: bold;
      border-radius: 8px;
      transition: background 0.3s ease-in-out;
    }
    .btn-primary:hover {
      background: #F97316;
    }

    /* Navbar Transition */
    header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 50;
      background-color: transparent;
      transition: background-color 0.4s ease, box-shadow 0.4s ease;
    }
    header.scrolled {
      background-color: #ffffff;
      box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    }