body {
        background: linear-gradient(135deg, #4e73df, #1cc88a);
        height: 100vh;
        margin: 0;
        display: flex;
        justify-content: center;
        align-items: center;
        font-family: Arial, sans-serif;
    }
    .login-box {
        background: #ffffff;
        padding: 35px;
        border-radius: 15px;
        width: 330px;
        box-shadow: 0 8px 25px rgba(0,0,0,0.2);
        animation: fadeIn 0.5s ease;
    }
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(15px); }
        to { opacity: 1; transform: translateY(0); }
    }
.login-box h2 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 20px;
    margin-top: 0px;
    color: #333;
}
    .input-group {
        margin-bottom: 20px;
    }
    .input-group label {
        font-size: 14px;
        color: #444;
    }
    .input-group input {
        width: 92%;
        padding: 10px 12px;
        font-size: 15px;
        border-radius: 8px;
        border: 1px solid #ccc;
        outline: none;
        transition: 0.3s;
    }
    .input-group input:focus {
        border-color: #4e73df;
        box-shadow: 0 0 5px rgba(78,115,223,0.5);
    }
    .btn-login {
        width: 100%;
        padding: 12px;
        background: #4e73df;
        border: none;
        border-radius: 8px;
        color: #fff;
        font-size: 16px;
        cursor: pointer;
        transition: 0.3s;
    }
    .btn-login:hover {
        background: #2e59d9;
    }
    .error {
        color: #e74a3b;
        margin-bottom: 15px;
        text-align: center;
    }