/* Prose & Content Styles */

.prose {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.prose>*+* {
    margin-top: var(--spacing-4);
}

.prose p {
    font-size: var(--font-size-base);
    /* Reduced from lg to base for better density */
}

.prose .lead {
    font-size: var(--font-size-lg);
    line-height: 1.6;
    margin-bottom: var(--spacing-6);
}

.prose h2 {
    font-family: var(--font-sans);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-top: var(--spacing-8);
    /* Reduced from spacing-12 */
    margin-bottom: var(--spacing-3);
    /* Reduced from spacing-4 */
    scroll-margin-top: calc(var(--header-height) + var(--spacing-8));
    position: relative;
}

.prose h3 {
    font-family: var(--font-sans);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-top: var(--spacing-6);
    /* Reduced from spacing-8 */
    margin-bottom: var(--spacing-2);
    /* Reduced from spacing-3 */
    scroll-margin-top: calc(var(--header-height) + var(--spacing-8));
}

.prose h2 .heading-anchor,
.prose h3 .heading-anchor {
    position: absolute;
    left: -1.5rem;
    color: var(--color-primary);
    opacity: 0;
    transition: opacity var(--transition-fast);
    text-decoration: none;
}

.prose h2:hover .heading-anchor,
.prose h3:hover .heading-anchor {
    opacity: 1;
}

.prose ul {
    list-style-type: disc;
    padding-left: var(--spacing-5);
    /* Reduced from spacing-6 */
    margin-bottom: 0;
    /* Let sibling selector handle vertical spacing */
}

.prose ul li {
    margin-bottom: var(--spacing-2);
}

.prose ul li::marker {
    color: var(--color-primary);
}

.prose strong {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.section {
    position: relative;
    margin-bottom: var(--spacing-12);
    scroll-margin-top: calc(var(--header-height) + var(--spacing-8));
}

/* Info Box */
.info-box {
    display: flex;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    margin: var(--spacing-6) 0;
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-md);
}

.info-box .material-symbols-outlined {
    flex-shrink: 0;
    color: var(--color-primary);
    margin-top: 2px;
}

.info-box-content h4 {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-1);
}

.info-box-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Code Block */
.code-block {
    position: relative;
    margin: var(--spacing-8) 0;
    background-color: var(--color-bg-code);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-2) var(--spacing-4);
    background-color: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-language {
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    color: #9ca3af;
}

.copy-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-2);
    font-family: var(--font-sans);
    font-size: 10px;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-inverse);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

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

.copy-button .material-symbols-outlined {
    font-size: 14px;
}

.code-content {
    padding: var(--spacing-4);
    overflow-x: auto;
}

.code-content pre {
    font-family: var(--font-mono);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: #d1d5db;
    white-space: pre;
}

.code-content .key {
    color: #67e8f9;
}

.code-content .string {
    color: #bef264;
}

.code-content .boolean-true {
    color: #4ade80;
}

.code-content .boolean-false {
    color: #f87171;
}

.code-content .nested-key {
    color: #a5b4fc;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    gap: var(--spacing-4);
    margin: var(--spacing-6) 0;
}

@media (min-width: 768px) {
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.card {
    padding: var(--spacing-5);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

.card:hover {
    border-color: var(--color-primary);
}

.card h3 {
    font-family: var(--font-sans);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
}

.card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Article Footer */
.article-footer {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    margin-top: var(--spacing-16);
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--color-border);
}

@media (min-width: 640px) {
    .article-footer {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.feedback-title {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2);
}

.feedback-buttons {
    display: flex;
    gap: var(--spacing-2);
}

.feedback-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-3);
    font-family: var(--font-sans);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.feedback-btn:hover {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-primary);
}

.feedback-btn .material-symbols-outlined {
    font-size: 16px;
}

.footer-links {
    display: flex;
    gap: var(--spacing-4);
}

.footer-link {
    font-family: var(--font-sans);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-text-primary);
}

.footer-link.primary {
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

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

/* Loading */
.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-16);
    color: var(--color-text-muted);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-4);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Page Transitions */
.main-content {
    position: relative;
}

.article-header,
.article-content,
.article-footer {
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;
}

.article-header.transitioning,
.article-content.transitioning,
.article-footer.transitioning {
    opacity: 0;
    transform: translateY(8px);
}

.article-header.visible,
.article-content.visible,
.article-footer.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Prevent layout shift by setting min-height during loading */
.article-content {
    min-height: 400px;
}

.article-content.loading {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Skeleton loading effect */
.skeleton {
    background: linear-gradient(90deg, var(--color-bg-tertiary) 25%, var(--color-bg-secondary) 50%, var(--color-bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-title {
    height: 48px;
    width: 60%;
    margin-bottom: var(--spacing-4);
}

.skeleton-meta {
    height: 32px;
    width: 40%;
    margin-bottom: var(--spacing-8);
}

.skeleton-text {
    height: 20px;
    width: 100%;
    margin-bottom: var(--spacing-3);
}

.skeleton-text:last-child {
    width: 75%;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* TOC transition */
.toc-list {
    transition: opacity 0.2s ease-out;
}

.toc-list.transitioning {
    opacity: 0.5;
}

/* Right Sidebar - TOC */
.sidebar-right {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-8));
    width: var(--toc-width);
    flex-shrink: 0;
    display: none;
    max-height: calc(100vh - var(--header-height) - var(--spacing-16));
    overflow-y: auto;
}

.sidebar-right::-webkit-scrollbar {
    width: 0;
}

@media (min-width: 1280px) {
    .sidebar-right {
        display: block;
    }
}

.toc-container {
    margin-bottom: var(--spacing-8);
}

.toc-title,
.related-title {
    margin-bottom: var(--spacing-4);
    font-family: var(--font-sans);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.toc-list {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    padding-left: var(--spacing-4);
    border-left: 1px solid var(--color-border);
}

.toc-indicator {
    position: absolute;
    left: -1px;
    width: 2px;
    height: 28px;
    background-color: var(--color-primary);
    transition: top var(--transition-normal);
}

.toc-item {
    display: block;
    padding: var(--spacing-1) 0;
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
    cursor: pointer;
}

.toc-item:hover {
    color: var(--color-text-primary);
}

.toc-item.active {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-semibold);
}

.toc-item.sub {
    padding-left: var(--spacing-4);
    font-size: var(--font-size-xs);
}

.related-section {
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-border);
}

/* Mobile TOC */
.mobile-toc {
    display: block;
    margin-bottom: var(--spacing-8);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background-color: var(--color-bg-card);
}

.mobile-toc details {
    width: 100%;
}

.mobile-toc summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-3) var(--spacing-4);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    cursor: pointer;
    list-style: none;
    background-color: var(--color-bg-tertiary);
}

.mobile-toc summary::-webkit-details-marker {
    display: none;
}

.mobile-toc summary .material-symbols-outlined {
    font-size: 20px;
    color: var(--color-text-muted);
    transition: transform var(--transition-fast);
}

.mobile-toc details[open] summary .material-symbols-outlined {
    transform: rotate(180deg);
}

.mobile-toc-content {
    padding: var(--spacing-3) var(--spacing-4);
    border-top: 1px solid var(--color-border);
}

.mobile-toc-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.mobile-toc-item {
    display: block;
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-decoration: none;
}

.mobile-toc-item.sub {
    padding-left: var(--spacing-4);
    font-size: var(--font-size-xs);
}

.mobile-toc-item:hover,
.mobile-toc-item.active {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
}

@media (min-width: 1280px) {
    .mobile-toc {
        display: none;
    }
}

.related-section {
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-border);
}

.related-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.related-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    cursor: pointer;
}

.related-item .material-symbols-outlined {
    font-size: 18px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.related-item span:last-child {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color var(--transition-fast);
}

.related-item:hover .material-symbols-outlined {
    color: var(--color-primary);
}

.related-item:hover span:last-child {
    color: var(--color-text-primary);
}

/* Mobile */
.mobile-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-overlay);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

@media (max-width: 1023px) {
    .sidebar-left {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 280px;
        height: calc(100vh - var(--header-height));
        max-height: none;
        padding: var(--spacing-6);
        background-color: var(--color-bg-primary);
        border-right: 1px solid var(--color-border);
        z-index: var(--z-overlay);
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }

    .sidebar-left.active {
        display: block;
        transform: translateX(0);
    }
}

@media (max-width: 640px) {
    .main-layout {
        padding: var(--spacing-6) var(--spacing-4);
    }

    .article-title {
        font-size: var(--font-size-3xl);
    }

    .article-meta {
        flex-direction: column;
        gap: var(--spacing-2);
    }
}