body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #1e1e1e;
    color: #d4d4d4;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: #007acc;
    padding: 20px;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 28px;
}

header p {
    margin: 5px 0 0;
    font-size: 16px;
    opacity: 0.9;
}

.container {
    flex: 1;
    display: flex;
    margin: 20px;
    gap: 20px;
}

.editor-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #252526;
    border-radius: 8px;
    overflow: hidden;
}

.editor-panel h2 {
    margin: 0;
    padding: 10px;
    background: #2d2d30;
    font-size: 16px;
}

#input-editor, #output-editor {
    flex: 1;
}

.controls {
    padding: 15px;
    text-align: center;
    background: #2d2d30;
}

button {
    padding: 10px 20px;
    margin: 0 10px;
    background: #007acc;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 15px;
}

button:hover {
    background: #005a99;
}

#status {
    margin-top: 10px;
    font-weight: bold;
}