body { 
    font-family: Arial, sans-serif; 
    background: #1a1a1a; 
    color: #e0e0e0; 
}

.login-box {
    width: 300px; 
    margin: 100px auto; 
    padding: 20px;
    background: #2d2d2d; 
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

input { 
    width: 100%; 
    padding: 10px; 
    margin: 5px 0; 
    background: #3d3d3d; 
    border: 1px solid #555; 
    color: #e0e0e0; 
    border-radius: 4px;
}

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

button:hover { 
    background: #45a049; 
}

.erro { 
    color: #ff6b6b; 
    font-size: 14px; 
    text-align: center; 
}

h2 { 
    color: #e0e0e0; 
    text-align: center; 
}