/* Book page styles */

.main-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
    font-size: 1.1rem;
}

.book-metadata {
    background-color: rgba(128, 128, 128, 0.1);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.book-metadata p {
    margin: 0.75rem 0;
}

.book-metadata h1 {
    margin-top: 0.5rem !important;
}

.book-metadata .original-title {
    font-style: italic;
    font-size: 1.1rem;
    color: rgba(var(--text-color), 0.8);
    margin-bottom: 1rem;
}

.expand-button {
    background: none;
    border: none;
    color: var(--text-color);
    text-decoration: underline;
    cursor: pointer;
    font-size: inherit;
    font-family: inherit;
    padding: 0;
    margin-left: 0.5rem;
    transition: opacity 0.2s ease;
}

.expand-button:hover {
    opacity: 0.7;
}

.expand-button:focus {
    outline: 1px solid var(--text-color);
    outline-offset: 2px;
}

.main-content h1, .main-content h2, .main-content h3,
.main-content h4, .main-content h5, .main-content h6 {
    margin: 1.5em 0 0.5em 0;
    line-height: 1.2;
    scroll-margin-top: 100px;
}

.main-content h1 {
    font-size: 1.75rem;
    border-bottom: 2px solid var(--text-color);
    padding-bottom: 0.3em;
}

.main-content h2 {
    font-size: 1.5rem;
    border-bottom: 1px solid var(--text-color);
    padding-bottom: 0.2em;
}

.main-content p {
    margin: 1em 0;
    text-align: left;
}

.main-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1em auto;
}

.main-content blockquote {
    margin: 1em 0;
    padding-left: 1em;
}

.main-content pre {
    padding: 1em;
    border-radius: 6px;
    margin: 1em 0;
    white-space: pre-wrap;
}

.main-content code {
    background-color: rgba(128, 128, 128, 0.1);
    padding: 0.2em 0.4em;
    border-radius: 3px;
    font-family: monospace;
}

.main-content pre code {
    background: none;
    padding: 0;
}

.home-button-container {
    text-align: center;
    padding: 3rem 0;
}

.home-button {
    display: inline-block;
    padding: 0.75rem 2rem;
    background-color: var(--bg-color);
    color: var(--text-color);
    text-decoration: none;
    border: 2px solid var(--text-color);
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    min-width: 120px;
}

.home-button:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    text-decoration: none;
}

.home-button:active {
    /* removed translateY to prevent vertical jitter - previously translateY(0) */
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.dark .home-button {
    box-shadow: 0 2px 4px rgba(255, 255, 255, 0.1);
}

.dark .home-button:hover {
    box-shadow: 0 4px 8px rgba(255, 255, 255, 0.2);
}

.after-content {
    border-top: 2px solid rgba(128, 128, 128, 0.8);
    margin-top: 2rem;
    padding: 20rem 0 2rem 0;
}

.share-rank {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.social-link {
    display: inline-block;
    transition: transform 0.2s ease, opacity 0.3s ease;
    border-radius: 4px;
    overflow: hidden;
    /* Ensure a small, consistent horizontal gap between share buttons */
    margin-right: 0.5rem;
}

/* Remove extra right margin on the last share button so layout remains tidy */
.share-rank .social-link:last-child {
    margin-right: 0;
}

.social-link:hover {
    /* removed translateY to prevent vertical jitter - previously translateY(-2px) */
    opacity: 0.8;
}

.social-icon {
    width: 32px;
    height: 32px;
    display: block;
}

.light .x-logo {
    filter: invert(1);
}

.dark .x-logo {
    filter: none;
}

.ranking-link {
    display: inline-block;
    transition: transform 0.2s ease, opacity 0.3s ease;
}

.ranking-link:hover {
    /* removed translateY to prevent vertical jitter - previously translateY(-1px) */
    opacity: 0.9;
}

.ranking-banner {
    border: 0;
    display: block;
    max-width: 100%;
    height: auto;
}

/* Ad header styles */
.ad-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 250px;
    max-width: 100%;
    margin: 2rem auto;
    padding: 1rem;
}

.ad-header img {
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}

/* Center Rakuten code block */
.rakuten-container {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    gap: 1rem;
    margin: 1rem 0;
    width: 100%;
}
.rakuten-container > * {
    max-width: 100%;
}

@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
    }
    
    .toc-floating-window {
        width: 90%;
        left: 5%;
    }
    
    .share-rank {
        gap: 0.75rem;
        padding: 1.5rem 0;
    }
}

@media (max-width: 480px) {
    .menu-container {
        display: flex;
        justify-content: left;
        gap: 0.3rem;
    }
    
    .share-rank {
        gap: 0.5rem;
        padding: 1rem 0;
    }

    .social-icon {
        width: 28px;
        height: 28px;
    }
}