body.dark-theme {
    background-color: #121212;
    color: #fff;
    font-family: Arial, sans-serif;
}

.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background: #1e1e1e;
    border-radius: 10px;
    box-shadow: 0 0 12px #ff0000;
}

.red-title {
    text-align: center;
    color: #ff0000;
    margin-bottom: 20px;
}

input[type="text"],
input[type="password"],
.red-button {
    width: 100%;
    box-sizing: border-box;
}

input[type="text"],
input[type="password"] {
    padding: 12px;
    margin: 10px 0;
    border: none;
    background: #e6ecff;
    color: #000;
    border-radius: 6px;
    font-size: 16px;
}

.red-button {
    padding: 12px;
    background-color: #ff0000;
    border: none;
    color: #fff;
    font-weight: bold;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.red-button:hover {
    background-color: #cc0000;
}

.link-group {
    text-align: center;
    margin-top: 15px;
}

.link-group a {
    color: #ff9999;
    text-decoration: none;
    font-size: 14px;
}

.link-group a:hover {
    text-decoration: underline;
}

.error {
    background-color: #ff4c4c;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
    color: white;
    text-align: center;
}