/* Articles hubs — workshop SectionCard overlay.
 * Loaded by the /articles/ library home only; not by the browse pages
 * or article leaves.
 * Section grammar: React report SectionCard / workshop-evoque.
 * Doorway photos: photographed studio cover-crop + float-card, not Home.
 * Do not add tokens here; consume shared tokens.css. */

.articles-hub {
  background: var(--color-page);
  color: var(--color-ink);
}

.articles-hub .ah-wrap {
  max-width: var(--mw-shell-width, 1240px);
  margin-inline: auto;
  padding-inline: var(--mw-shell-gutter, 16px);
  padding-top: 0;
}

/* Breadcrumb — same role as converted tools. */
.articles-hub .ah-breadcrumb {
  gap: 8px;
  padding-top: 24px;
  color: var(--color-mid);
  font-size: var(--text-body-sm);
  line-height: var(--text-body-sm--line-height);
}
.articles-hub .ah-breadcrumb a {
  min-height: auto;
  color: var(--color-mid);
}
.articles-hub .ah-breadcrumb a:hover { color: var(--color-action); }
.articles-hub .ah-breadcrumb .ph {
  color: var(--color-faint);
  font-size: var(--text-body-sm);
}

/* Overview h1 lives inside the first nested card, like Help Centre. */
.articles-hub .ah-section-main > h1 {
  margin: 0;
  color: var(--color-ink);
  font-size: var(--text-display);
  font-weight: 800;
  line-height: var(--text-display--line-height);
  letter-spacing: var(--text-display--letter-spacing);
}
.articles-hub .ah-overview-copy {
  margin: 10px 0 0;
  max-width: 62ch;
  color: var(--color-muted);
  font-size: var(--text-prose);
  font-weight: 400;
  line-height: var(--text-prose--line-height);
}

.articles-hub .ah-jump {
  overflow: hidden;
  margin-top: 28px;
  border: 1px solid var(--color-card-border);
  border-radius: 14px;
}
.articles-hub .ah-jump a {
  box-sizing: border-box;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  width: 100%;
  min-height: 0;
  min-width: 0;
  margin: 0;
  padding: 14px 16px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  text-decoration: none;
}
.articles-hub .ah-jump a + a {
  border-top: 1px solid var(--color-card-border);
}
.articles-hub .ah-jump a:hover {
  background: var(--color-chip);
}
.articles-hub .ah-jump a > i:first-child {
  margin-top: 1px;
  color: var(--color-ink);
  font-size: 18px;
}
.articles-hub .ah-jump a > span { min-width: 0; }
.articles-hub .ah-jump strong {
  display: block;
  color: var(--color-ink);
  font-size: var(--text-body);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.articles-hub .ah-jump small {
  display: block;
  margin-top: 2px;
  color: var(--color-muted);
  font-size: var(--text-compact);
  font-weight: 400;
  line-height: 1.45;
}
.articles-hub .ah-jump a > i:last-child {
  margin-top: 1px;
  color: var(--color-muted);
  font-size: 14px;
}
.articles-hub .ah-jump a:hover :is(strong, i) { color: var(--color-action); }

/* Buttons match report BTN_BASE / primary / secondary. */
.articles-hub .ah-button {
  min-height: var(--spacing-control);
  padding: var(--spacing-pill-y) var(--spacing-pill-x);
  background: var(--color-action);
  border-color: var(--color-action);
  color: var(--color-surface);
  font-size: var(--text-compact);
  font-weight: 600;
  line-height: 1;
}
.articles-hub .ah-button:hover {
  background: var(--color-action-hover);
  border-color: var(--color-action-hover);
}
.articles-hub .ah-button .ph { font-size: 16px; }
.articles-hub .ah-button-secondary {
  background: var(--color-surface);
  color: var(--color-ink);
  border-color: var(--color-btn-border);
}
.articles-hub .ah-button-secondary:hover {
  background: var(--color-row);
  border-color: var(--color-btn-border-hover);
  color: var(--color-ink);
}

.articles-hub :is(.ah-section, #main-content) {
  scroll-margin-top: 24px;
}
.articles-hub :is(.ah-button, .ah-text-link, .ah-skip, .ah-jump a):focus-visible {
  outline: 2px solid var(--color-action);
  outline-offset: 2px;
}

/* Transparent section on grey; 28/800 rail; nested white card. */
.articles-hub .ah-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 24px 0;
  margin-bottom: 0;
  border-radius: 0;
  background: transparent;
}
.articles-hub .ah-section-rail {
  display: block;
  min-width: 0;
}
.articles-hub .ah-section-rail h2 {
  color: var(--color-ink);
  font-size: var(--text-h2);
  font-weight: 800;
  line-height: var(--text-h2--line-height);
  letter-spacing: var(--text-h2--letter-spacing);
}
.articles-hub .ah-section-rail > p {
  max-width: none;
  margin-top: 8px;
  color: var(--color-muted);
  font-size: var(--text-compact);
  font-weight: 400;
  line-height: 1.45;
}

.articles-hub .ah-section-main {
  min-width: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  padding: 22px 20px;
}

.articles-hub .ah-topic-description {
  max-width: 70ch;
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: var(--text-body--line-height);
}

/* Photographed studio doorway: cover-crop room, float on the floor. */
.articles-hub .ah-doorway {
  position: relative;
  margin: 0 0 20px;
}
.articles-hub .ah-doorway-photo {
  height: 360px;
  padding: 0;
  border-radius: 24px;
  background: #e8eaee;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.12);
}
.articles-hub .ah-doorway-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 42% 58%;
}
.articles-hub .ah-float {
  position: absolute;
  right: 18px;
  bottom: 18px;
  min-width: 190px;
  padding: 12px 14px;
  background: var(--color-surface);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
}
.articles-hub .ah-float small {
  display: block;
  color: var(--color-muted);
  font-size: 12.5px;
  font-weight: 400;
  line-height: 1.3;
}
.articles-hub .ah-float b {
  display: block;
  margin: 2px 0 4px;
  color: var(--color-ink);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}
.articles-hub .ah-float .ah-float-note {
  color: var(--color-mid);
}

.articles-hub .ah-topic-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
  margin-top: 24px;
}
.articles-hub .ah-browse-hint {
  color: var(--color-muted);
  font-size: var(--text-body-sm);
  font-weight: 400;
  line-height: var(--text-body-sm--line-height);
}

/* About is method copy, not slogan pillars. */
.articles-hub .ah-method {
  display: grid;
  gap: 0;
}
.articles-hub .ah-method > div + div {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-card-border);
}
.articles-hub .ah-method h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: var(--color-ink);
  font-size: var(--text-card-title);
  font-weight: 700;
  line-height: 1;
}
.articles-hub .ah-method h3 .ph {
  width: 20px;
  height: 20px;
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
}
.articles-hub .ah-method p {
  margin: 8px 0 0;
  color: var(--color-muted);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: 1.45;
}

@media (min-width: 1024px) {
  .articles-hub .ah-section {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 40px;
    padding-top: 28px;
    padding-bottom: 64px;
  }
  .articles-hub .ah-section-rail {
    position: sticky;
    top: calc(var(--mw-header-height, 56px) + 12px);
    align-self: start;
    padding-bottom: 28px;
  }
  .articles-hub .ah-section-rail > p { max-width: 200px; }
  .articles-hub .ah-section-main { padding: 28px 32px; }
}

@media (max-width: 1023px) {
  .articles-hub .ah-section {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 24px 0;
  }
  .articles-hub .ah-section-rail {
    display: block;
  }
  .articles-hub .ah-section-rail > p,
  .articles-hub .ah-section-rail > .ah-text-link {
    grid-column: auto;
    justify-self: start;
  }
  .articles-hub .ah-doorway-photo {
    height: 260px;
    border-radius: 20px;
  }
  .articles-hub .ah-doorway-photo img {
    object-position: 92% 62%;
  }
  .articles-hub .ah-float {
    right: 12px;
    bottom: 12px;
    min-width: 160px;
    padding: 10px 12px;
  }
  .articles-hub .ah-float b { font-size: 18px; }
}

@media (max-width: 767px) {
  .articles-hub .ah-section { margin-bottom: 0; padding: 24px 0; }
  .articles-hub .ah-section-main { padding: 22px 20px; }
}