body {
      font-family: 'Segoe UI', sans-serif;
      margin: 0;
      padding: 0;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
    }

    .container {
      padding: 0;
      margin: 0;
      max-width: 100%;
    }

    .hero-1 {
      background: url(./img/vault.jpg) no-repeat center center / cover;
      height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      position: relative;
      width: 100%;
    }

    .overlay-1 {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.4);
    }

    .head-title {
      font-size: 70px;
      color: white;
    }

    .container-1 {
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      height: 100%;
      padding-bottom: 60px;
    }

    .folder {
      background-color: #3498db;
      color: white;
      padding: 20px 40px;
      font-size: 1.5rem;
      border-radius: 12px;
      cursor: pointer;
      transition: transform 0.3s, background-color 0.3s;
      box-shadow: 0 4px 12px rgba(0,0,0,0.2);
      text-align: center;
      min-width: 200px;
    }

    .folder:hover {
      transform: scale(1.05);
      background-color: #2980b9;
    }

    .modal-1 {
      position: fixed;
      top: 0;
      left: 0;
      width: 100vw;
      height: 100vh;
      background: rgba(0, 0, 0, 0.6);
      display: none;
      justify-content: center;
      align-items: center;
    }

    .modal-content-2 {
      background: #fff;
      padding: 30px;
      border-radius: 10px;
      text-align: center;
    }

    input[type="password"] {
      padding: 10px;
      width: 80%;
      margin-top: 10px;
      border-radius: 5px;
      border: 1px solid #ccc;
    }

    button {
      margin-top: 25px;
      padding: 12px 28px;
      background-color: #2ecc71;
      border: none;
      color: white;
      border-radius: 8px;
      cursor: pointer;
      font-size: 1rem;
      transition: transform 0.2s ease, background-color 0.3s ease;
      animation: fadeInUp 0.5s ease;
    }

    button:hover {
      background-color: #27ae60;
      transform: scale(1.05);
    }

    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(10px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .error {
      color: red;
      display: none;
      margin-top: 10px;
    }

    @media (max-width: 600px) {
      .folder {
        padding: 12px 20px;
      }

      input[type="password"] {
        width: 90%;
      }
    }