body {
            margin: 0;
            min-height: 100vh;
            padding: 24px;
            box-sizing: border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: Inter, system-ui, Arial, sans-serif;
            background: url("../images/forest1.png") no-repeat center center fixed;
            background-size: cover;
        }

        .login-container {
            width: 100%;
            max-width: 700px;
            margin: 0;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 20px;
            padding: 40px;
            box-shadow: 0 0 30px rgba(0, 0, 0, 0.2);
            text-align: center;
        }

        h1 {
            margin-bottom: 30px;
            font-size: 40px;
            color: #333;
        }

        .login-label {
            display: block;
            width: 90%;
            margin: 14px auto 6px;
            text-align: left;
            font-size: 15px;
            font-weight: 700;
            color: #17324d;
        }

        .form-control {
            width: 90%;
            margin: 10px auto;
            font-size: 20px;
            padding: 14px;
            border-radius: 8px;
            border: 1px solid #aaa;
            box-sizing: border-box;
        }

        .form-control:focus,
        .form-control:focus-visible {
            outline: none;
            border-color: #0f766e;
            box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.16);
        }

        .login-btn {
            margin-top: 25px;
            padding: 14px 30px;
            font-size: 22px;
            width: 200px;
            border: none;
            border-radius: 10px;
            background-color: #4CAF50;
            color: white;
            cursor: pointer;
            transition: 0.2s;
        }

        .login-btn:hover {
            background-color: #3c8c3f;
        }

        .login-btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(15, 118, 110, 0.18);
        }

        .error-msg {
            color: #b42318;
            font-size: 18px;
            margin-top: 15px;
        }

        .retry-timer {
            color: #9a3412;
            font-size: 18px;
            margin-top: 10px;
        }

/* Mobile */
@media (max-width: 600px) {
  body {
    padding: 16px;
    background-attachment: scroll;
  }

  .login-container {
    width: 100%;
    max-width: 420px;
    margin: 0;
    padding: 24px 20px;
    border-radius: 16px;
  }

  h1 { font-size: 28px; margin-bottom: 18px; }

  .form-control {
    width: 100%;
    margin: 10px 0;
    font-size: 16px;
    padding: 12px;
  }

  .login-label {
    width: 100%;
    margin: 12px 0 6px;
    font-size: 14px;
  }

  .login-btn {
    width: 100%;
    font-size: 18px;
    padding: 12px;
    margin-top: 16px;
  }

  .error-msg, .retry-timer { font-size: 14px; }
}