/* ============================================
   ARTICLES — Reading-optimized styles
   Only loaded on article and listing pages
   via frontmatter: extraCss: /articles.css
   ============================================ */


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

.article-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--gradient-ocean);
    z-index: 1001;
    transition: width 80ms linear;
    pointer-events: none;
}


/* ============================================
   ARTICLE HEADER
   Calm, quiet — no hero gradient.
   Centered, generous spacing.
   ============================================ */

.article-header {
    padding: var(--space-2xl) var(--space-md) var(--space-xl);
    text-align: center;
}

.article-featured-img {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.article-featured-img img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.article-header-inner {
    max-width: 660px;
    margin: 0 auto;
}

.article-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-ocean-700);
    background: var(--color-ocean-50);
    border: 1px solid rgba(6, 182, 212, 0.2);
    padding: 0.25rem 0.875rem;
    border-radius: 100px;
    margin-bottom: var(--space-md);
}

.article-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.025em;
    color: var(--color-deep-700);
    margin-bottom: var(--space-md);
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-ocean-700);
    opacity: 0.8;
}

.article-meta-sep {
    opacity: 0.4;
}

.article-source {
    margin-top: var(--space-sm);
    font-size: 0.8125rem;
    color: var(--color-ocean-700);
    opacity: 0.65;
}

.article-source a {
    color: var(--color-ocean-700);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.article-source a:hover {
    color: var(--color-deep-500);
}


/* ============================================
   ARTICLE BODY
   The core reading experience.
   Optimized measure, generous rhythm.
   ============================================ */

.article-body {
    max-width: 660px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md) var(--space-2xl);
}

.article-body p {
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--color-text);
    margin-bottom: 1.5em;
}

.article-body p:last-child {
    margin-bottom: 0;
}

/* Headings — chapter-break feel */
.article-body h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-deep-700);
    letter-spacing: -0.02em;
    margin-top: 2.75em;
    margin-bottom: 0.75em;
}

.article-body h3 {
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--color-deep-600);
    margin-top: 2em;
    margin-bottom: 0.5em;
}

/* First heading in article body — no extra top margin */
.article-body > h2:first-child,
.article-body > h3:first-child {
    margin-top: 0;
}

/* Links */
.article-body a {
    color: var(--color-deep-500);
    text-decoration: underline;
    text-decoration-color: rgba(0, 119, 182, 0.3);
    text-underline-offset: 3px;
    transition: text-decoration-color 0.2s ease;
}

.article-body a:hover {
    text-decoration-color: var(--color-deep-500);
}

/* Blockquotes / pull-quotes */
.article-body blockquote {
    border-left: 3px solid var(--color-ocean-400);
    margin: 2em 0;
    padding: 0.75em 0 0.75em 1.5em;
}

.article-body blockquote p {
    font-size: 1.125rem;
    font-style: italic;
    color: var(--color-deep-600);
    line-height: 1.7;
}

/* Lists within article prose */
.article-body ul,
.article-body ol {
    margin: 1.25em 0;
    padding-left: 1.5em;
}

.article-body li {
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--color-text);
    margin-bottom: 0.5em;
}

.article-body ul li::marker {
    color: var(--color-ocean-500);
}

/* Strong text */
.article-body strong {
    font-weight: 700;
    color: var(--color-deep-700);
}

/* Horizontal rule as section divider */
.article-body hr {
    border: none;
    height: 1px;
    background: rgba(6, 182, 212, 0.15);
    margin: 2.5em 0;
}

/* Images within articles */
.article-body figure {
    margin: 2.5em 0;
    text-align: center;
}

.article-body figure img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.article-body figcaption {
    font-size: 0.8125rem;
    color: var(--color-ocean-700);
    opacity: 0.7;
    margin-top: 0.75em;
    padding: 0 var(--space-md);
}


/* ============================================
   AUTHOR CARD
   ============================================ */

.article-footer {
    max-width: 660px;
    margin: 0 auto;
    padding: 0 var(--space-md) var(--space-2xl);
}

.author-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid rgba(6, 182, 212, 0.12);
    padding-top: var(--space-lg);
}

.author-card-photo {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
    border: 2px solid var(--color-ocean-100);
}

.author-card-info {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.author-card-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-ocean-700);
    opacity: 0.6;
}

.author-card-name {
    font-size: 1.0625rem;
    font-weight: 700;
    color: var(--color-deep-700);
}

.author-card-bio {
    font-size: 0.875rem;
    color: var(--color-text);
    opacity: 0.75;
    line-height: 1.5;
    margin: 0;
}

.author-card-link {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-deep-500);
    text-decoration: none;
    margin-top: 0.25rem;
    transition: color 0.2s ease;
}

.author-card-link:hover {
    color: var(--color-ocean-600);
}


/* ============================================
   LISTING PAGE
   Magazine-index feel. Single column.
   ============================================ */

.listing {
    padding: var(--space-2xl) var(--space-md);
}

.listing-inner {
    max-width: 700px;
    margin: 0 auto;
}

.listing-header {
    margin-bottom: var(--space-xl);
}

.listing-header h1 {
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: 900;
    color: var(--color-deep-700);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-xs);
}

.listing-header p {
    font-size: 1.0625rem;
    color: var(--color-text);
    opacity: 0.7;
    max-width: 520px;
}

.listing-section-title {
    font-size: clamp(1.5rem, 4vw, 1.875rem);
    font-weight: 800;
    color: var(--color-deep-700);
    letter-spacing: -0.02em;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-ocean-200);
}

.listing-section-desc {
    font-size: 1.0625rem;
    color: var(--color-text);
    opacity: 0.7;
    max-width: 560px;
    line-height: 1.65;
    margin-bottom: var(--space-lg);
}

.listing-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.listing-card {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
    text-decoration: none;
    padding: var(--space-md);
    border-radius: 10px;
    background: var(--color-ocean-50);
    border: 1px solid rgba(6, 182, 212, 0.12);
    transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.listing-card:hover {
    background: #e0fafe;
    box-shadow: 0 4px 16px rgba(6, 182, 212, 0.12);
    transform: translateY(-1px);
}

.listing-card:hover .listing-card-title {
    color: var(--color-deep-500);
}

.listing-card-thumb {
    width: 200px;
    height: 140px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.listing-card-thumb--portrait {
    width: 100px;
    height: 140px;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.book-buy-links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.book-buy-links a {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--color-ocean-700);
    text-decoration: none;
    padding: 0.375rem 0.875rem;
    border-radius: 100px;
    border: 1.5px solid var(--color-ocean-700);
    transition: all 0.15s ease;
}

.book-buy-links a:hover {
    background: var(--color-ocean-700);
    color: var(--color-white);
}

.listing-card-content {
    flex: 1;
    min-width: 0;
}

.listing-card-tag {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-ocean-700);
    margin-bottom: 0.5rem;
}

.listing-card-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-deep-700);
    letter-spacing: -0.015em;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    transition: color 0.2s ease;
}

.listing-card-excerpt {
    font-size: 0.9375rem;
    line-height: 1.65;
    color: var(--color-text);
    opacity: 0.75;
    margin-bottom: 0.75rem;
}

.listing-card-meta {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    color: var(--color-ocean-700);
    opacity: 0.55;
}


/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .article-header {
        padding: var(--space-xl) var(--space-sm) var(--space-lg);
    }

    .article-body {
        padding: var(--space-lg) var(--space-sm) var(--space-xl);
    }

    .article-footer {
        padding: 0 var(--space-sm) var(--space-xl);
    }

    .author-card {
        padding: var(--space-md) 0;
        padding-top: var(--space-lg);
    }

    .listing {
        padding: var(--space-xl) var(--space-sm);
    }

    .listing-card {
        flex-direction: column;
        gap: var(--space-sm);
        padding: var(--space-sm);
    }

    .listing-card-thumb {
        width: 100%;
        height: 180px;
        border-radius: 6px;
    }

    .listing-card:has(.listing-card-thumb--portrait) {
        flex-direction: row;
    }

    .listing-card-thumb--portrait {
        width: 80px;
        height: 112px;
    }
}


/* ============================================
   PUBLICATIONS PAGE
   Academic publication list with expandable abstracts
   ============================================ */

.pub-page {
    max-width: 740px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-md);
}

.pub-page-header {
    margin-bottom: var(--space-xl);
}

.pub-page-header h1 {
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: 900;
    color: var(--color-deep-700);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-xs);
}

.pub-page-header p {
    font-size: 1.0625rem;
    color: var(--color-text);
    opacity: 0.7;
    max-width: 560px;
    line-height: 1.65;
}

/* Year groups */
.pub-year-group {
    margin-top: var(--space-xl);
}

.pub-year-group:first-child {
    margin-top: var(--space-sm);
}

.pub-year {
    font-size: 1.125rem;
    font-weight: 800;
    color: var(--color-ocean-700);
    letter-spacing: -0.01em;
    padding: 0.375rem 0;
    margin-bottom: 0;
    border-bottom: 2px solid var(--color-ocean-100);
}

.pub-entry {
    padding: var(--space-lg) 0;
    border-bottom: 1px solid rgba(6, 182, 212, 0.1);
}

.pub-entry:last-child {
    border-bottom: none;
}

.pub-entry-num {
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--color-ocean-500);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.375rem;
}

.pub-entry-title {
    font-size: 1.1875rem;
    font-weight: 700;
    color: var(--color-deep-700);
    letter-spacing: -0.01em;
    line-height: 1.35;
    margin-bottom: 0.5rem;
}

.pub-entry-authors {
    font-size: 0.875rem;
    color: var(--color-text);
    opacity: 0.75;
    line-height: 1.5;
    margin-bottom: 0.25rem;
}

.pub-entry-authors .pub-self {
    font-weight: 700;
    color: var(--color-deep-700);
    opacity: 1;
}

.pub-entry-journal {
    font-size: 0.8125rem;
    color: var(--color-ocean-700);
    opacity: 0.7;
    margin-bottom: 0.75rem;
}

.pub-entry-journal em {
    font-style: italic;
}

.pub-entry-abstract {
    margin: 0;
    border: none;
}

.pub-entry-abstract summary {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-deep-500);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0;
    transition: color 0.2s ease;
    list-style: none;
}

.pub-entry-abstract summary::-webkit-details-marker {
    display: none;
}

.pub-entry-abstract summary::after {
    content: "";
    display: inline-block;
    width: 0.375rem;
    height: 0.375rem;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(-45deg);
    transition: transform 0.2s ease;
    margin-top: -2px;
}

.pub-entry-abstract[open] summary::after {
    transform: rotate(45deg);
    margin-top: 0;
}

.pub-entry-abstract summary:hover {
    color: var(--color-ocean-600);
}

.pub-entry-abstract .pub-abstract-text {
    font-size: 0.9375rem;
    line-height: 1.75;
    color: var(--color-text);
    margin-top: 0.75rem;
    padding: var(--space-md);
    background: rgba(6, 182, 212, 0.03);
    border-radius: 6px;
    border-left: 2px solid var(--color-ocean-200);
}

.pub-entry-link {
    display: inline-block;
    margin-top: 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-deep-500);
    text-decoration: none;
    transition: color 0.2s ease;
}

.pub-entry-link:hover {
    color: var(--color-ocean-600);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .pub-page {
        padding: var(--space-xl) var(--space-sm);
    }
}


/* ============================================
   RTL ADJUSTMENTS
   For Arabic article pages. Complements rtl.css.
   ============================================ */

[dir="rtl"] .article-body blockquote {
    border-left: none;
    border-right: 3px solid var(--color-ocean-400);
    padding-left: 0;
    padding-right: 1.5em;
}

[dir="rtl"] .article-body ul,
[dir="rtl"] .article-body ol {
    padding-left: 0;
    padding-right: 1.5em;
}

[dir="rtl"] .listing-card {
    direction: rtl;
}

[dir="rtl"] .author-card-link {
    direction: rtl;
}

/* Publication entries: English text stays LTR within RTL page */
[dir="rtl"] .pub-entry-title,
[dir="rtl"] .pub-entry-authors,
[dir="rtl"] .pub-entry-journal {
    direction: ltr;
    text-align: left;
}

/* Flip abstract chevron for RTL: > becomes < */
[dir="rtl"] .pub-entry-abstract summary::after {
    border-right: none;
    border-left: 1.5px solid currentColor;
    transform: rotate(45deg);
}

[dir="rtl"] .pub-entry-abstract[open] summary::after {
    transform: rotate(-45deg);
}

/* Abstract text is English — LTR */
[dir="rtl"] .pub-entry-abstract .pub-abstract-text {
    direction: ltr;
    text-align: left;
    border-left: 2px solid var(--color-ocean-200);
    border-right: none;
}