body {
    font-family: 'Open Sans', sans-serif;
    background-color: #f4f6f9;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.header {
    background-color: #d3004d;
    padding: 20px 40px;
    text-align: center;
}
.logo {
    height: 40px;
    filter: brightness(0) invert(1);
}
.container {
    max-width: 400px;
    margin: 60px auto;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
}
h1 {
    color: #d3004d;
    text-align: center;
    margin-top: 0;
    margin-bottom: 30px;
    font-weight: 600;
}
.form-group {
    margin-bottom: 20px;
}
label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}
input[type='text'],
input[type='password'] {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
    font-family: inherit;
}
input[type='text']:focus,
input[type='password']:focus {
    border-color: #0173d1;
    outline: none;
    box-shadow: 0 0 0 2px rgba(1, 115, 209, 0.2);
}
button {
    background-color: #d3004d;
    color: white;
    border: none;
    padding: 12px;
    border-radius: 4px;
    width: 100%;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}
button:hover {
    background-color: #b1003f;
}
.error-message {
    background-color: #ffebee;
    color: #c62828;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
    display: none;
}
.error-server {
    background-color: #fff8e1;
    color: #f57c00;
}