body {
    background: #1a1a1a;
    font-family: 'Segoe UI', Tahoma, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
.login-container {
    background: #2c2c2c;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 30px rgba(0,0,0,0.7);
    width: 320px;
    text-align: center;
    color: #ddd;
}
.login-container h2 {
    color: #ff5555;
    margin-bottom: 5px;
}
.login-container p {
    font-size: 0.9em;
    color: #aaa;
}
#error-message {
    color: #ff8888;
    margin: 10px 0;
    min-height: 1.2em;
}
input {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    background: #1e1e1e;
    border: 1px solid #444;
    color: #fff;
    border-radius: 4px;
    box-sizing: border-box;
}
button {
    width: 100%;
    padding: 10px;
    background: #555;
    border: none;
    color: white;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
}
button:disabled {
    background: #333;
    cursor: not-allowed;
}
#ban-message {
    color: #ff4444;
    margin-top: 15px;
}