body {
    background-color: #f8f9fa;
}

.card {
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#editor {
    border-radius: 4px;
    font-size: 14px;
}

.validation-item {
    padding: 8px;
    margin-bottom: 8px;
    border-radius: 4px;
}

.validation-error {
    background-color: #fff3f3;
    border-left: 4px solid #dc3545;
}

.validation-warning {
    background-color: #fff8e6;
    border-left: 4px solid #ffc107;
}

.line-number {
    color: #6c757d;
    font-family: monospace;
    margin-right: 8px;
    min-width: 70px;
}

.error-code {
    background-color: #f8f9fa;
    padding: 2px 4px;
    border-radius: 3px;
    font-size: 12px;
    color: #d63384;
    margin-right: 8px;
}

.error-message {
    color: #212529;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    #editor {
        height: 200px;
    }
}