/* ==========================================================================
   BLOG CSS - Loaded only on blog pages
   ========================================================================== */

/* ==========================================================================
   BLOG LISTING
   ========================================================================== */

.featured-posts-box {
    background: var(--overlay-subtle);
    border: 1px solid var(--overlay-light);
    border-radius: var(--radius-lg);
    padding: 24px 28px;
}

.featured-posts-heading {
    font-family: var(--font-sans);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--overlay-light);
}

.featured-posts-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.featured-post-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 12px 12px 16px;
    margin: 0 -12px;
    border-left: 1px solid var(--color-primary);
    text-decoration: none;
    transition: background var(--timing-fast) var(--ease-default);
}

.featured-post-item:hover {
    background: var(--overlay-lighter);
}

.featured-post-title {
    color: var(--color-text);
    font-weight: 500;
    font-size: var(--font-size-lg);
    line-height: 1.4;
}

.featured-post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.featured-post-time {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* .featured-post-tag styles consolidated in TAGS section */

/* Blog browse - two column layout */
.blog-browse {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 60px;
    padding: 60px 0;
}

.blog-filters {
    position: sticky;
    top: 100px;
    align-self: start;
}

.blog-filters-heading {
    font-family: var(--font-sans);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--overlay-light);
}

.blog-filter-group {
    margin-bottom: 20px;
}

.blog-filter-label {
    display: block;
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.blog-filter-input,
.blog-filter-select {
    width: 100%;
    padding: 10px 12px;
    font-size: var(--font-size-md);
    color: var(--color-text);
    background: var(--overlay-lighter);
    border-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: border-color var(--timing-fast) var(--ease-default), background var(--timing-fast) var(--ease-default);
}

.blog-filter-input::placeholder {
    color: var(--color-text-muted-2x);
}

.blog-filter-input:focus,
.blog-filter-select:focus {
    background: var(--overlay-semi);
}

.blog-filter-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23DDDDDD' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.blog-filter-select option {
    background: var(--color-bg);
    color: var(--color-text);
}

.blog-results {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

@media (max-width: 900px) {
    .blog-browse {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .blog-filters {
        position: static;
    }
}

.blog-no-results {
    text-align: center;
    color: var(--color-text-muted);
    padding: 40px 0;
}

/* Blog post cards (Alpine.js rendered) */
.blog-post-card {
    display: block;
    padding: 24px 28px;
    border-left: 2px solid transparent;
    text-decoration: none;
    transition: transform var(--timing-fast) var(--ease-default), background var(--timing-fast) var(--ease-default), border-color var(--timing-fast) var(--ease-default);
}

.blog-post-card:hover {
    transform: translateX(4px);
    border-left-color: var(--color-primary);
}

.blog-post-title {
    font-family: var(--font-sans);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 12px 0;
    line-height: 1.4;
}

/* Card meta - used in blog listing cards */
.blog-post-card .blog-post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.blog-post-card .blog-post-date,
.blog-post-card .blog-post-author,
.blog-post-card .blog-post-time {
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.blog-post-card .blog-post-author::before,
.blog-post-card .blog-post-time::before {
    content: '\2022';
    margin-right: 12px;
    color: var(--overlay-divider);
}

/* Card tags - smaller gap for listing */
.blog-post-card .blog-post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* .blog-tag styles consolidated in TAGS section (styles.css) */

/* ==========================================================================
   BLOG POST
   ========================================================================== */

.blog-post {
    max-width: var(--max-content-width);
    margin: 0 auto;
    padding: 60px var(--container-padding);
}

.blog-post-header {
    margin-bottom: 0;
}

.blog-post-header::after {
    content: '';
    display: block;
    width: 60px;
    height: 1px;
    background-color: var(--color-border-dark);
    margin: 48px 0;
}

.blog-post-header .heading-medium {
    margin-bottom: 16px;
}

.blog-post-subheading {
    font-family: var(--font-sans);
    font-size: var(--font-size-1_25xl);
    font-weight: 300;
    font-style: italic;
    color: var(--color-text-muted);
    margin: 20px 0;
}

/* Header meta - used in blog post page header */
.blog-post-header-meta {
    display: flex;
    gap: 16px;
    font-family: var(--font-sans);
    font-size: var(--font-size-md);
    color: var(--color-text-muted);
}

.blog-post-header-meta .blog-post-author,
.blog-post-header-meta .blog-post-date,
.blog-post-header-meta .blog-post-time {
    color: var(--color-text-muted);
}

.blog-post-header-meta .blog-post-author::before,
.blog-post-header-meta .blog-post-time::before {
    content: none;
}


/* Table of Contents */
.blog-toc {
    margin: 32px 0 48px;
    padding: 24px;
    background: var(--overlay-subtle);
    border-radius: var(--radius-md);
}

.blog-toc-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.blog-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.blog-toc-item {
    margin-bottom: 8px;
    position: relative;
}

.blog-toc-item a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--timing-fast) var(--ease-default);
}

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

/* Heading levels */
.blog-toc-level-1 {
    padding-left: 0;
    font-weight: 600;
}

/* H2: one bar showing nesting under H1 */
.blog-toc-level-2 {
    padding-left: 24px;
}

.blog-toc-level-2::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 0;
    bottom: -8px;
    width: 1px;
    background: var(--color-primary);
}

/* H2 bar stops before H1 or at end */
.blog-toc-level-2:has(+ .blog-toc-level-1)::before,
.blog-toc-level-2:last-child::before {
    bottom: 0;
}

/* H3: TWO bars - continues H2 bar + its own */
.blog-toc-level-3 {
    padding-left: 48px;
    font-size: 0.9em;
}

/* H3's first bar - continues the H2 bar */
.blog-toc-level-3::before {
    content: '';
    position: absolute;
    left: 6px;
    top: 0;
    bottom: -8px;
    width: 1px;
    background: var(--color-primary);
}

/* H3's second bar - its own level */
.blog-toc-level-3::after {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: -8px;
    width: 1px;
    background: var(--color-primary);
}

/* H3 bars stop before H1 or at end */
.blog-toc-level-3:has(+ .blog-toc-level-1)::before,
.blog-toc-level-3:has(+ .blog-toc-level-1)::after,
.blog-toc-level-3:last-child::before,
.blog-toc-level-3:last-child::after {
    bottom: 0;
}

/* H3's own bar (::after) also stops before H2 */
.blog-toc-level-3:has(+ .blog-toc-level-2)::after {
    bottom: 0;
}

.blog-post-content {
    font-family: var(--font-sans);
    font-size: var(--font-size-xl);
    line-height: 1.8;
    color: var(--color-text);
}

.blog-post-content h1 {
    font-size: var(--font-size-2xl);
    margin-top: 64px;
    margin-bottom: 24px;
    color: var(--color-primary);
}

.blog-post-content h2 {
    font-size: var(--font-size-1_5xl);
    margin-top: 56px;
    margin-bottom: 20px;
    color: var(--color-text);
}

.blog-post-content h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-top: 40px;
    margin-bottom: 16px;
    color: var(--color-primary);
}

.blog-post-content h4 {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--color-text-muted);
}

.blog-post-content p {
    margin-bottom: 24px;
}

.blog-post-content ul,
.blog-post-content ol {
    margin-bottom: 24px;
    padding-left: 24px;
}

.blog-post-content li {
    margin-bottom: 8px;
    color: var(--color-text-muted);
}

.blog-post-content code {
    font-family: 'Space Mono', monospace;
    background: var(--overlay-light);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
}

.blog-post-content pre {
    background: var(--overlay-lighter);
    padding: 24px;
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin-bottom: 24px;
}

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

.blog-post-content blockquote {
    border-left: 3px solid var(--color-primary);
    padding-left: 24px;
    margin: 24px 0;
    font-style: italic;
    color: var(--color-text-muted);
}

/* Pull Quotes - nested blockquote >> syntax */
.blog-post-content blockquote > blockquote {
    border-left: none;
    padding-left: 0;
    margin: 40px 0;
    font-size: var(--font-size-1_5xl);
    font-style: normal;
    font-weight: 500;
    line-height: 1.5;
    color: var(--color-primary);
    text-align: center;
}

/* Remove outer blockquote styling when it contains a pull quote */
.blog-post-content blockquote:has(> blockquote) {
    border-left: none;
    padding-left: 0;
    margin: 0;
    font-style: normal;
    color: inherit;
}

.blog-post-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.blog-post-content a:hover {
    text-decoration: none;
}

.blog-post-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: var(--font-size-lg);
}

.blog-post-content table thead {
    border-bottom: 2px solid var(--color-primary);
}

.blog-post-content table thead td,
.blog-post-content table th {
    font-weight: 600;
    text-align: left;
    padding: 12px 16px;
    color: var(--color-primary);
}

.blog-post-content table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--overlay-light);
    vertical-align: top;
}

.blog-post-content table tr:last-child td {
    border-bottom: none;
}

.blog-post-content table tr:hover {
    background: var(--overlay-subtle);
}

/* Blog figures with image and caption */
.blog-post-content .blog-figure {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 32px 0;
}

.blog-post-content .blog-figure img {
    max-width: 60%;
    height: auto;
    cursor: zoom-in;
    border-radius: var(--radius-lg);
    border: 1px solid var(--overlay-light);
    transition: border-color var(--timing-fast) var(--ease-default);
}

.blog-post-content .blog-figure img:hover {
    border-color: var(--color-primary);
}

.blog-post-content .blog-figure figcaption {
    margin-top: 12px;
    font-size: var(--font-size-sm);
    font-style: italic;
    color: var(--color-text-muted-2x);
    text-align: center;
    max-width: 80%;
}

/* Legacy: standalone images without figure wrapper */
.blog-post-content > p > img:only-child,
.blog-post-content img:not(.blog-figure img) {
    max-width: 50%;
    height: auto;
    cursor: zoom-in;
    border-radius: var(--radius-lg);
    border: 1px solid var(--overlay-light);
    transition: border-color var(--timing-fast) var(--ease-default);
    display: block;
    margin: 24px auto;
}

.blog-post-content img:not(.blog-figure img):hover {
    border-color: var(--color-primary);
}

/* Image lightbox modal */
.image-lightbox {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--timing-medium) var(--ease-default), visibility var(--timing-medium) var(--ease-default);
}

.image-lightbox.active {
    opacity: 1;
    visibility: visible;
}

/* Loading spinner */
.image-lightbox-spinner {
    position: absolute;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    opacity: 0;
    visibility: hidden;
    animation: lightbox-spin 1s linear infinite;
    z-index: 1002;
}

.image-lightbox.loading .image-lightbox-spinner {
    opacity: 1;
    visibility: visible;
}

.image-lightbox.loading .image-lightbox-container img {
    opacity: 0;
}

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

.image-lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 32px;
    cursor: pointer;
    z-index: 1001;
    opacity: 0.7;
    transition: opacity var(--timing-fast) var(--ease-default);
}

.image-lightbox-close:hover {
    opacity: 1;
}

.image-lightbox-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    touch-action: none; /* Prevent browser handling of touch */
}

.image-lightbox-container img {
    position: absolute;
    transform-origin: 0 0;
    cursor: grab;
    user-select: none;
    -webkit-user-drag: none;
    -webkit-touch-callout: none;
}

.image-lightbox-container img.dragging {
    cursor: grabbing;
}

.image-lightbox-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    opacity: 0.7;
}

.blog-post-footer {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Header tags - larger gap for post page */
.blog-post-header .blog-post-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 16px;
}

/* Blog footer - author profile */
.blog-footer {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 60px;
    padding: 60px 0;
    max-width: var(--max-content-width);
    margin: 0 auto;
}

/* Blog responsive */
@media (max-width: 768px) {
    .blog-post-card .blog-post-meta {
        flex-wrap: wrap;
    }

    .blog-post {
        padding: 40px var(--container-padding);
    }

    .blog-footer {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 40px var(--container-padding);
    }

    /* Lightbox mobile optimizations */
    .image-lightbox-container {
        width: 100vw;
        height: 100vh;
    }

    .image-lightbox-close {
        top: 12px;
        right: 12px;
        font-size: 28px;
    }

    .image-lightbox-hint {
        font-size: 11px;
        bottom: 12px;
        padding: 0 12px;
        text-align: center;
    }
}

/* ==========================================================================
   BLOG POST ENTRANCE ANIMATION
   Simple page-wide fade-in for immediate content visibility
   ========================================================================== */

@keyframes blog-post-enter {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.blog-post {
    animation: blog-post-enter 0.5s ease-out both;
}

@media (prefers-reduced-motion: reduce) {
    .blog-post {
        animation: none;
        opacity: 1;
    }
}

/* ==========================================================================
   READING PROGRESS BAR
   ========================================================================== */

.blog-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--color-primary);
    transform-origin: left;
    transform: scaleX(0);
    z-index: 1000;
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    .blog-progress-bar {
        display: none;
    }
}