* {
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    height: 100vh;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    width: 100%;
    max-width: 360px;
}

.login-box {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 10px 25px rgba(0,0,0,.2);
}

.login-box h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #333;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    color: #555;
}

.input-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button {
    width: 100%;
    padding: 10px;
    background: #1e3c72;
    border: none;
    color: #fff;
    font-size: 16px;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #16305a;
}

.error {
    margin-top: 10px;
    color: red;
    text-align: center;
}