/* Full screen background */
    body {
      font-family: 'Poppins', sans-serif;
      margin: 0;
      padding: 0;
      height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      background: linear-gradient(135deg, #87ad88ff, #828084ff, #7391c4ff, #a6d8a7ff);
    }

    /* Login card */
    .login {
      background: #fff;
      padding: 40px 30px;
      border-radius: 16px;
      box-shadow: 0 8px 24px rgba(0,0,0,0.2);
      width: 100%;
      max-width: 400px;
      animation: fadeIn 0.6s ease-in-out;
      text-align: center;
    }

    .login h1 {
      font-size: 28px;
      margin-bottom: 25px;
      color: #2575fc;
    }

    /* Form */
    .login form {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .login label {
      font-weight: 600;
      font-size: 14px;
      text-align: left;
    }

    .login input {
      padding: 12px;
      border: 1px solid #ddd;
      border-radius: 12px;
      font-size: 15px;
      outline: none;
      transition: all 0.3s ease;
    }

    .login input:focus {
      border-color: #2575fc;
      box-shadow: 0 0 6px rgba(37,117,252,0.4);
    }

    /* Button */
    .btn {
      background: linear-gradient(135deg, #6a11cb, #2575fc);
      color: white;
      padding: 12px;
      border: none;
      border-radius: 12px;
      font-size: 16px;
      font-weight: 600;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .btn:hover {
      background: linear-gradient(135deg, #5b0db3, #1d63e0);
      transform: translateY(-2px);
      box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    }

    /* Flash messages */
    .messages {
      margin-top: 15px;
    }
    .messages p {
      padding: 10px;
      border-radius: 8px;
      font-size: 14px;
      margin: 5px 0;
    }
    .messages .success { background: #d4edda; color: #155724; }
    .messages .error { background: #f8d7da; color: #721c24; }

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