:root {
    --primary-color: #2196F3;
    --hover-color: #1976D2;
    --background-color: #f5f5f5;
    --text-color: #333;
    --border-color: #ddd;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    background-color: var(--background-color);
    color: var(--text-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    margin-bottom: 2rem;
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1rem;
}

button {
    padding: 0.5rem 1rem;
    font-size: 1rem;
    border: none;
    border-radius: 4px;
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: var(--hover-color);
}

main {
    flex: 1;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

#editor {
    width: 100%;
    height: 600px;
}

footer {
    margin-top: 2rem;
    text-align: center;
    color: #666;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .actions {
        flex-wrap: wrap;
    }

    #editor {
        height: 400px;
    }
}