:root {
    --background: #f8e7e7;
    --foreground: #171717;
}

@media (prefers-color-scheme: light) {
    :root {
        --background: #0a0a0a;
        --foreground: #ededed;
    }
}

body {
    background: var(--background);
    color: var(--foreground);
    font-family: serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    text-align: left;
}

.container {
    max-width: 42rem;
    margin: 0 auto;
    padding: 4rem 1.5rem;
    min-height: 100vh;
    text-align: left;
    padding: 2rem;
}

.header {
    margin-bottom: 1rem;
}

.nav {
    display: flex;
    gap: 1.5rem;
}

.nav-link {
    text-decoration: none;
    color: #2563eb;
    transition: text-decoration 0.2s ease;
}

.nav-link:hover {
    text-decoration: underline;
}

.nav-link.active {
    color: var(--foreground);
    text-decoration: none;
}

.link {
    color: #2563eb;
    text-decoration: none;
    transition: text-decoration 0.2s ease;
}

.link:hover {
    text-decoration: underline;
}

.list {
    list-style-type: disc;
    padding-left: 1rem;
    margin-left: 1rem;
}

.list li {
    margin-bottom: 0.25rem;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.bookshelf-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.book-column-header {
    font-weight: bold;
    text-decoration: underline;
}

.book-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.book-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 2rem 1rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .bookshelf-header,
    .book-row {
        gap: 1rem;
    }
}