body {
      height: 100vh;
      margin: 0;
      display: flex;
      justify-content: center;
      align-items: center;
      background: linear-gradient(135deg, #ff9a9e, #fad0c4, #a1c4fd, #c2e9fb);
      background-size: 400% 400%;
      animation: gradientBG 15s ease infinite;
      font-family: 'Inter', sans-serif;
    }

    @keyframes gradientBG {
      0% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
      100% { background-position: 0% 50%; }
    }

    .form-wrapper {
      background-color: #ffffff;
      padding: 40px 30px;
      border-radius: 16px;
      box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
      max-width: 500px;
      width: 100%;
    }

    .form-wrapper h3 {
      text-align: center;
      margin-bottom: 25px;
      font-weight: 600;
      color: #333;
    }

    label {
      font-weight: 500;
      margin-top: 10px;
      color: #333;
    }

    .form-control {
      border-radius: 10px;
      padding: 10px;
      font-size: 15px;
    }

    .input-group-text {
      cursor: pointer;
      background-color: #f0f0f0;
      border-radius: 0 10px 10px 0;
    }

    .btn-submit {
      background: linear-gradient(135deg, #f093fb, #f5576c);
      color: #fff;
      border: none;
      padding: 12px;
      width: 100%;
      border-radius: 10px;
      font-weight: 600;
      margin-top: 15px;
      transition: background 0.3s ease;
    }

    .btn-submit:hover {
      background: linear-gradient(135deg, #f5576c, #f093fb);
    }

    .text-danger {
      font-size: 14px;
    }

    .success-message p,
    .alert-info {
      background-color: #e6ffed;
      color: #218838;
      border-radius: 8px;
      padding: 10px;
      font-size: 14px;
      text-align: center;
    }

    #message {
      font-size: 14px;
      font-weight: 500;
    }

    .text-center a {
      color: #f5576c;
      text-decoration: none;
    }

    .text-center a:hover {
      text-decoration: underline;
    }