body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #2b5876, #4e4376);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: #ffffff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 350px;
    text-align: center;
}

.container h2 {
    margin-bottom: 20px;
    color: #2b5876;
    font-size: 24px;
    font-weight: bold;
}

.input-field {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s ease;
}

.input-field:focus {
    border-color: #2b5876;
}

.button {
    width: 100%;
    padding: 12px;
    background: #2b5876;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-top: 10px;
}

.button:hover {
    background: #1d4350;
}

.register-link {
    display: block;
    margin-top: 15px;
    color: #2b5876;
    text-decoration: none;
    font-size: 14px;
}

.register-link:hover {
    text-decoration: underline;
}

.error-message {
    color: red;
    margin-top: 10px;
    font-size: 14px;
}

</style>