body { 
    font-family: monospace; 
    margin: 0; 
    padding: 20px; 
    background: #f5f5f5; 
}

.container { 
    max-width: 1000px; 
    margin: 0 auto; 
}

h1 { 
    text-align: center; 
    color: #333; 
}

.converter { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 20px; 
    margin: 20px 0; 
}

.section { 
    background: white; 
    padding: 20px; 
    border-radius: 8px; 
    box-shadow: 0 2px 4px rgba(0,0,0,0.1); 
}

textarea { 
    width: 100%; 
    height: 300px; 
    padding: 10px; 
    border: 1px solid #ddd; 
    border-radius: 4px; 
    font-family: monospace; 
    resize: vertical; 
    box-sizing: border-box;
}

.controls { 
    margin: 10px 0; 
}

button { 
    padding: 8px 16px; 
    margin: 0 5px 5px 0; 
    border: none; 
    border-radius: 4px; 
    cursor: pointer; 
    font-family: monospace;
}

.primary { 
    background: #007bff; 
    color: white; 
}

.secondary { 
    background: #6c757d; 
    color: white; 
}

button:hover { 
    opacity: 0.8; 
}

.output { 
    border: 1px solid #ddd; 
    border-radius: 4px; 
    min-height: 300px; 
    max-height: 400px; 
    overflow-y: auto; 
    background: #f8f9fa; 
    padding: 10px; 
    font-family: monospace; 
    white-space: pre-wrap; 
    box-sizing: border-box;
}

.error { 
    color: #dc3545; 
    background: #f8d7da; 
    padding: 10px; 
    border-radius: 4px; 
    margin: 10px 0; 
}

.info { 
    background: white; 
    padding: 20px; 
    margin: 20px 0; 
    border-radius: 8px; 
    box-shadow: 0 2px 4px rgba(0,0,0,0.1); 
}

.info h3 {
    margin-top: 20px;
}

.info h3:first-child {
    margin-top: 0;
}

@media (max-width: 768px) { 
    .converter { 
        grid-template-columns: 1fr; 
    } 
}