styles.css

/* Modern CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
    min-height: 100vh;
}

/* Header Styles */
h1 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 2.5em;
    text-align: center;
}

h2 {
    color: #34495e;
    font-size: 1.2em;
    margin: 10px 0;
}

/* Container Styles */
.editor-container {
    width: 100%;
    max-width: 1200px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.preview-container {
    width: 100%;
    max-width: 1200px;
}

/* Editor Styles */
textarea {
    width: 100%;
    height: 300px;
    padding: 15px;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 14px;
    line-height: 1.5;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fff;
    resize: vertical;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: border-color 0.3s, box-shadow 0.3s;
}

textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52,152,219,0.2);
}

/* Preview Styles */
#preview {
    width: 100%;
    height: 500px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }
    
    .editor-container {
        grid-template-columns: 1fr;
    }
    
    textarea {
        height: 200px;
    }
    
    #preview {
        height: 300px;
    }
    
    h1 {
        font-size: 2em;
    }
}