/* ==========================================================================
   GISAN SHIPYARD — ARTICLE DETAIL STYLES
   Visual Source of Truth: Article Detail - Desktop (Stitch Approved Screen)
   Responsive Derivation: Locked Gisan Responsive System
   ========================================================================== */

/* ── 1. Page Scaffolding & Container ───────────────────────── */
.article-detail-page {
  background-color: var(--color-background);
  color: var(--color-on-surface);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.article-container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-margin-desktop);
  padding-right: var(--space-margin-desktop);
  box-sizing: border-box;
}

/* Centered Reading Column (8 Columns in Desktop 12-Col Grid) */
.article-reading-col {
  width: 100%;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

/* ── 2. Article Header ─────────────────────────────────────── */
.article-header-section {
  padding-top: 140px;
  padding-bottom: 48px;
  background-color: var(--color-surface);
  text-align: center;
}

.article-header-section:empty {
  display: none;
}

.article-header__category {
  display: inline-block;
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  font-weight: var(--text-label-caps-weight);
  line-height: var(--text-label-caps-lh);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 16px;
}

.article-header__category:empty {
  display: none;
}

.article-header__title {
  font-family: var(--font-primary);
  font-size: var(--text-display-xl-size);
  font-weight: var(--text-display-xl-weight);
  line-height: var(--text-display-xl-lh);
  letter-spacing: var(--text-display-xl-ls);
  color: var(--color-primary);
  margin: 0 0 24px 0;
  text-wrap: balance;
}

.article-header__lead {
  font-family: var(--font-primary);
  font-size: var(--text-body-lg-size);
  font-weight: var(--text-body-lg-weight);
  line-height: var(--text-body-lg-lh);
  color: var(--color-on-surface-variant);
  max-width: 760px;
  margin: 0 auto 32px auto;
}

.article-header__lead:empty {
  display: none;
}

/* Metadata Bar with Auto-Collapsing Separators */
.article-header__meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  row-gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--text-spec-data-size);
  font-weight: var(--text-spec-data-weight);
  letter-spacing: var(--text-spec-data-ls);
  color: var(--color-outline);
}

.article-header__meta:empty {
  display: none;
}

.article-meta__item {
  display: inline-flex;
  align-items: center;
}

.article-meta__item:empty {
  display: none;
}

/* Bullet separator only appears between populated items */
.article-meta__item:not(:empty) + .article-meta__item:not(:empty)::before {
  content: "·";
  display: inline-block;
  margin: 0 12px;
  color: var(--color-steel-grey);
  font-weight: 700;
}

/* ── 3. Hero Image / Media Container ───────────────────────── */
.article-hero-media {
  margin: 0 0 72px 0;
  padding: 0;
  width: 100%;
}

.article-hero-media:empty {
  display: none;
}

.article-hero-media__frame {
  width: 100%;
  height: 560px;
  background-color: var(--color-surface-container);
  border: 1px solid rgba(129, 135, 185, 0.3);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.article-hero-media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(85%);
  transition: filter 0.5s ease;
  display: block;
}

.article-hero-media__scrim {
  position: absolute;
  inset: 0;
  background-color: var(--color-primary);
  mix-blend-mode: multiply;
  opacity: 0.18;
  pointer-events: none;
}

/* ── 4. Article Editorial Body (Long-Form Typography) ───────── */
.article-content-section {
  padding-bottom: 96px;
}

.article-body {
  font-family: var(--font-primary);
  font-size: var(--text-body-lg-size);
  font-weight: var(--text-body-lg-weight);
  line-height: 1.75;
  color: var(--color-on-surface);
}

.article-body p {
  margin-top: 0;
  margin-bottom: 24px;
}

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

/* Headings within Article */
.article-body h2 {
  font-family: var(--font-primary);
  font-size: var(--text-headline-lg-size);
  font-weight: var(--text-headline-lg-weight);
  line-height: var(--text-headline-lg-lh);
  letter-spacing: var(--text-headline-lg-ls);
  color: var(--color-primary);
  margin-top: 56px;
  margin-bottom: 20px;
}

.article-body h3 {
  font-family: var(--font-primary);
  font-size: var(--text-headline-md-size);
  font-weight: var(--text-headline-md-weight);
  line-height: var(--text-headline-md-lh);
  color: var(--color-primary);
  margin-top: 40px;
  margin-bottom: 16px;
}

/* Lists */
.article-body ul {
  list-style: disc;
  padding-left: 28px;
  margin-top: 0;
  margin-bottom: 28px;
  color: var(--color-on-surface-variant);
}

.article-body ol {
  list-style: decimal;
  padding-left: 28px;
  margin-top: 0;
  margin-bottom: 28px;
  color: var(--color-on-surface-variant);
}

.article-body li {
  margin-bottom: 10px;
  line-height: 1.65;
}

.article-body li strong {
  color: var(--color-primary);
}

/* Links & Text Formatting */
.article-body a {
  color: var(--color-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.article-body a:hover {
  color: var(--color-on-secondary-container);
}

.article-body strong {
  font-weight: 700;
  color: var(--color-primary);
}

.article-body em {
  font-style: italic;
}

/* Divider */
.article-divider {
  border: 0;
  height: 1px;
  background-color: rgba(129, 135, 185, 0.25);
  margin: 48px 0;
}

/* ── 5. Technical Callout Box (Stitch Component) ───────────── */
.article-callout {
  margin: 40px 0;
  padding: 32px;
  background-color: var(--color-off-white);
  border: 1px solid rgba(129, 135, 185, 0.3);
  border-left: 4px solid var(--color-secondary);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.article-callout:empty {
  display: none;
}

.article-callout__title {
  font-family: var(--font-primary);
  font-size: var(--text-headline-md-size);
  font-weight: var(--text-headline-md-weight);
  line-height: var(--text-headline-md-lh);
  color: var(--color-primary);
  margin: 0 0 20px 0;
}

.article-callout__list {
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-spec-data-size);
  line-height: var(--text-spec-data-lh);
  letter-spacing: var(--text-spec-data-ls);
  color: var(--color-on-surface-variant);
}

.article-callout__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(129, 135, 185, 0.2);
  gap: 16px;
}

.article-callout__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.article-callout__item:first-child {
  padding-top: 0;
}

.article-callout__label {
  color: var(--color-on-surface-variant);
}

.article-callout__value {
  color: var(--color-primary);
  font-weight: 600;
  text-align: right;
}

/* ── 6. Blockquote & Citation Component ────────────────────── */
.article-quote {
  margin: 44px 0;
  padding: 28px 32px;
  border-left: 4px solid var(--color-secondary);
  background-color: rgba(0, 102, 136, 0.04);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.article-quote:empty {
  display: none;
}

.article-quote__text {
  font-family: var(--font-primary);
  font-size: 22px;
  font-style: italic;
  line-height: 1.55;
  color: var(--color-primary);
  margin: 0 0 16px 0;
}

.article-quote__cite {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-style: normal;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-secondary);
}

/* ── 7. Figure & Caption Component ─────────────────────────── */
.article-figure {
  margin: 44px 0;
  padding: 0;
}

.article-figure:empty {
  display: none;
}

.article-figure__frame {
  width: 100%;
  height: 440px;
  background-color: var(--color-surface-container);
  border: 1px solid rgba(129, 135, 185, 0.3);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.article-figure__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(80%);
  display: block;
}

.article-figure__caption {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--color-outline);
  margin-top: 12px;
  padding-left: 4px;
}

/* ── 8. Editorial Table Component (Horizontally Safe) ───────── */
.article-table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 40px 0;
  border: 1px solid rgba(129, 135, 185, 0.3);
  border-radius: var(--radius);
}

.article-table-wrap:empty {
  display: none;
}

.article-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-family: var(--font-primary);
  font-size: var(--text-body-md-size);
  text-align: left;
}

.article-table th {
  background-color: var(--color-surface-container);
  font-family: var(--font-mono);
  font-size: var(--text-label-caps-size);
  font-weight: 700;
  letter-spacing: var(--text-label-caps-ls);
  text-transform: uppercase;
  color: var(--color-primary);
  padding: 16px 20px;
  border-bottom: 1px solid rgba(129, 135, 185, 0.3);
}

.article-table td {
  padding: 14px 20px;
  border-bottom: 1px solid rgba(129, 135, 185, 0.18);
  color: var(--color-on-surface);
}

.article-table tr:last-child td {
  border-bottom: none;
}

.article-table td.is-mono {
  font-family: var(--font-mono);
  font-size: var(--text-spec-data-size);
}

.article-table td.is-status {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-secondary);
  font-weight: 600;
}

/* ── 9. Related Insights Section (Stitch Source) ───────────── */
.article-related-section {
  padding-bottom: 96px;
}

.article-related-section:empty {
  display: none;
}

.article-related__divider {
  border: 0;
  height: 1px;
  background-color: rgba(129, 135, 185, 0.3);
  margin: 0 0 64px 0;
}

.article-related__title {
  font-family: var(--font-primary);
  font-size: var(--text-headline-lg-size);
  font-weight: var(--text-headline-lg-weight);
  line-height: var(--text-headline-lg-lh);
  letter-spacing: var(--text-headline-lg-ls);
  color: var(--color-primary);
  margin: 0 0 40px 0;
  text-transform: uppercase;
}

.article-related__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-gutter);
}

.article-related-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-off-white);
  border: 1px solid rgba(129, 135, 185, 0.3);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.article-related-card:hover {
  border-color: var(--color-secondary);
  box-shadow: 0 4px 20px rgba(0, 6, 34, 0.06);
}

.article-related-card__media {
  width: 100%;
  height: 250px;
  background-color: var(--color-surface-container);
  overflow: hidden;
  position: relative;
}

.article-related-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.4s ease, transform 0.4s ease;
  display: block;
}

.article-related-card:hover .article-related-card__img {
  filter: grayscale(0%);
  transform: scale(1.02);
}

.article-related-card__body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-related-card__category {
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  font-weight: var(--text-label-caps-weight);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 12px;
}

.article-related-card__title {
  font-family: var(--font-primary);
  font-size: var(--text-headline-md-size);
  font-weight: var(--text-headline-md-weight);
  line-height: var(--text-headline-md-lh);
  color: var(--color-primary);
  margin: 0 0 14px 0;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.article-related-card:hover .article-related-card__title {
  color: var(--color-secondary);
}

.article-related-card__desc {
  font-family: var(--font-primary);
  font-size: var(--text-body-md-size);
  line-height: var(--text-body-md-lh);
  color: var(--color-on-surface-variant);
  margin: 0 0 24px 0;
  flex-grow: 1;
}

.article-related-card__action {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-primary);
  font-size: var(--text-label-caps-size);
  font-weight: var(--text-label-caps-weight);
  letter-spacing: var(--text-label-caps-ls);
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-top: auto;
}

.article-related-card__action .material-symbols-outlined {
  font-size: 16px;
  transition: transform 0.2s ease;
}

.article-related-card:hover .article-related-card__action .material-symbols-outlined {
  transform: translateX(4px);
}

/* ── 10. Bottom CTA Section (Locked Pattern) ─────────────────── */
.article-cta-section {
  background-color: var(--color-charcoal);
  color: var(--color-off-white);
  padding: 80px 0;
  border-top: 1px solid rgba(129, 135, 185, 0.3);
}

.article-cta__inner {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  gap: 48px;
}

.article-cta__content {
  max-width: 680px;
}

.article-cta__title {
  font-family: var(--font-primary);
  font-size: var(--text-headline-lg-size);
  font-weight: 700;
  line-height: var(--text-headline-lg-lh);
  letter-spacing: var(--text-headline-lg-ls);
  color: var(--color-off-white);
  margin: 0 0 16px 0;
  text-transform: uppercase;
}

.article-cta__desc {
  font-family: var(--font-primary);
  font-size: var(--text-body-lg-size);
  font-weight: var(--text-body-lg-weight);
  line-height: var(--text-body-lg-lh);
  color: var(--color-surface-container);
  margin: 0;
}

.article-cta__actions {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

/* ── 11. Responsive Breakpoints ────────────────────────────── */

@media (max-width: 1024px) {
  .article-container {
    padding-left: var(--space-margin-tablet);
    padding-right: var(--space-margin-tablet);
  }

  .article-header-section {
    padding-top: 120px;
    padding-bottom: 40px;
  }

  .article-header__title {
    font-size: 52px;
  }

  .article-hero-media__frame {
    height: 440px;
  }

  .article-figure__frame {
    height: 360px;
  }

  .article-body h2 {
    font-size: 38px;
  }

  .article-related-card__media {
    height: 200px;
  }

  .article-related-card__body {
    padding: 24px;
  }

  .article-cta__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 32px;
  }

  .article-cta__actions {
    width: 100%;
  }

  .article-cta__actions .btn {
    flex: 1;
    justify-content: center;
  }
}

/* Tablet Portrait (768px) */
@media (max-width: 768px) {
  .article-container {
    padding-left: var(--space-margin-mobile);
    padding-right: var(--space-margin-mobile);
  }

  .article-header-section {
    padding-top: 100px;
    padding-bottom: 32px;
  }

  .article-header__title {
    font-size: 38px;
  }

  .article-header__lead {
    font-size: 16px;
  }

  .article-hero-media {
    margin-bottom: 48px;
  }

  .article-hero-media__frame {
    height: 320px;
  }

  .article-body {
    font-size: 17px;
    line-height: 1.7;
  }

  .article-body h2 {
    font-size: 30px;
    margin-top: 40px;
  }

  .article-callout {
    padding: 24px 20px;
    margin: 32px 0;
  }

  .article-callout__item {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .article-callout__value {
    text-align: left;
  }

  .article-quote {
    padding: 20px 24px;
    margin: 32px 0;
  }

  .article-quote__text {
    font-size: 19px;
  }

  .article-figure {
    margin: 32px 0;
  }

  .article-figure__frame {
    height: 280px;
  }

  .article-related__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .article-related-section {
    padding-bottom: 64px;
  }
}

/* Mobile (390px Baseline) */
@media (max-width: 480px) {
  .article-header-section {
    padding-top: 92px;
    padding-bottom: 28px;
  }

  .article-header__title {
    font-size: 30px;
    letter-spacing: -0.01em;
    margin-bottom: 16px;
  }

  .article-header__lead {
    font-size: 15px;
    line-height: 1.55;
    margin-bottom: 24px;
  }

  .article-meta__item:not(:empty) + .article-meta__item:not(:empty)::before {
    margin: 0 8px;
  }

  .article-hero-media {
    margin-bottom: 36px;
  }

  .article-hero-media__frame {
    height: 220px;
  }

  .article-body {
    font-size: 16px;
    line-height: 1.65;
  }

  .article-body h2 {
    font-size: 24px;
    margin-top: 36px;
    margin-bottom: 16px;
  }

  .article-body h3 {
    font-size: 20px;
    margin-top: 28px;
    margin-bottom: 12px;
  }

  .article-body ul,
  .article-body ol {
    padding-left: 20px;
    margin-bottom: 20px;
  }

  .article-callout {
    padding: 20px 16px;
    margin: 28px 0;
  }

  .article-quote {
    padding: 16px 20px;
    margin: 28px 0;
  }

  .article-quote__text {
    font-size: 17px;
  }

  .article-figure__frame {
    height: 200px;
  }

  .article-related__title {
    font-size: var(--text-headline-lg-mob-size);
    margin-bottom: 28px;
  }

  .article-related-card__media {
    height: 180px;
  }

  .article-related-card__body {
    padding: 20px;
  }

  .article-cta-section {
    padding: 60px 0;
  }

  .article-cta__title {
    font-size: var(--text-headline-lg-mob-size);
  }

  .article-cta__desc {
    font-size: var(--text-body-md-size);
  }

  .article-cta__actions {
    flex-direction: column;
  }

  .article-cta__actions .btn {
    width: 100%;
  }
}