body {
    font-family: Arial, sans-serif;
    background: #222;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-container, .dashboard {
    background: #333;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
}

input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: none;
    border-radius: 5px;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 10px;
    width: 100%;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.error {
    background: #e74c3c;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 10px;
}

.logout {
    display: inline-block;
    margin-top: 20px;
    color: #f44336;
    text-decoration: none;
}