:root {
    --max-width: 900px;
}

body {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0;
}

nav {
    background-color: #f5f5f5;
    border-bottom: 1px solid #ddd;
    margin: 0;
    padding: 0;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 1rem;
    display: flex;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    text-decoration: underline;
}

main {
    padding: 2rem 1rem;
}

.container {
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    background-color: #fafafa;
}

.container h2 {
    margin-top: 0;
}

.file-list {
    list-style-position: inside;
    padding-left: 0;
}

.file-list li {
    margin-bottom: 0.5rem;
}

.file-list a {
    text-decoration: none;
}

.file-list a:hover {
    text-decoration: underline;
}

.textarea-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

textarea {
    resize: vertical;
    min-height: 200px;
    font-family: monospace;
    border: 1px solid #ddd;
    padding: 0.75rem;
    border-radius: 4px;
}

.button-group {
    display: flex;
    gap: 1rem;
}

button {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: #f5f5f5;
    cursor: pointer;
    font-size: 1rem;
}

button:hover {
    background-color: #efefef;
}

button:active {
    background-color: #e0e0e0;
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    main {
        padding: 1rem;
    }

    .container {
        padding: 1rem;
    }
}