/* People catalog and profile (PT-22). Owner: design-owner (task-14).
   Only page layout classes here; palette/type/space come from tokens.css. */

.people-page {
  padding-top: var(--space-10);
}

.people-page__header {
  max-width: 820px;
  padding-bottom: var(--space-8);
}

.people-toolbar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.people-toolbar .search-field {
  margin-bottom: 0;
  max-width: 640px;
}

.people-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.people-filter {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: var(--border-strong);
  border-radius: var(--radius-pill);
  font-size: var(--text-meta);
  font-weight: var(--weight-medium);
  color: var(--color-ink);
  text-decoration: none;
  background: var(--color-bg);
}

.people-filter:hover {
  background: var(--color-surface);
}

.people-filter--selected {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-bg);
}

.people-page .active-filters {
  margin-bottom: var(--space-4);
}

.people-page__count {
  margin-bottom: var(--space-4);
  font-size: var(--text-meta);
  color: var(--color-ink-3);
}

.people-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--grid-gap);
  margin: 0;
  padding: 0;
  list-style: none;
}

.people-grid__item {
  min-width: 0;
}

.person-card {
  height: 100%;
  background: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-card);
}

.person-card__link {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 20px;
  gap: var(--space-5);
  align-items: start;
  padding: var(--card-pad);
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-card);
}

.person-card__link:hover .person-card__name {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.person-card__media {
  display: block;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-avatar-bg);
}

.person-card__photo {
  width: 72px;
  height: 72px;
  object-fit: cover;
}

.avatar--72 {
  width: 72px;
  height: 72px;
  font-size: 20px;
}

.person-card__initials {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-avatar-bg);
  color: var(--color-ink);
  font-size: 20px;
  font-weight: var(--weight-semibold);
}

.person-card__body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.person-card__role {
  font-size: var(--text-meta);
  color: var(--color-ink-2);
}

.person-card__name {
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
  line-height: var(--lh-card);
}

.person-card__former {
  align-self: flex-start;
  margin-top: 4px;
  padding: 2px 10px;
  border: var(--border);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  font-size: var(--text-caption);
  color: var(--color-ink-2);
}

.person-card__direction {
  margin-top: 4px;
  font-size: var(--text-meta);
  color: var(--color-ink-2);
}

.person-card__summary {
  margin-top: 4px;
  font-size: var(--text-body-s);
  line-height: 1.5;
  color: var(--color-ink-2);
}

.person-card__arrow {
  color: var(--color-ink-2);
}

/* ---------------------------------------------------------------- profile
 *
 * IBM Research people-page composition: large name + framed portrait, a quiet left
 * rail with topics/links/anchors/collaboration, and a wide reading column. The portrait
 * stays card-sized (max 300px wide) so the name and bio lead the page.
 */

.people-profile {
  padding-top: clamp(24px, 3vw, 40px);
}

.person-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: clamp(32px, 5vw, 72px);
  align-items: end;
  padding-bottom: clamp(28px, 4vw, 44px);
  border-bottom: var(--border);
}

.person-hero__identity {
  min-width: 0;
}

.person-hero__name {
  max-width: 12ch;
  margin: 14px 0 0;
  font-size: clamp(48px, 6.4vw, 92px);
  font-weight: var(--weight-semibold);
  line-height: 0.94;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.person-hero__role {
  max-width: 56ch;
  margin: 24px 0 0;
  font-size: clamp(17px, 1.3vw, 20px);
  line-height: 1.45;
  color: var(--color-ink-2);
}

.person-hero__former {
  margin: 12px 0 0;
  font-size: var(--text-meta);
  color: var(--color-ink-3);
}

.person-hero__stats {
  margin: 18px 0 0;
  font-size: var(--text-body-s);
  color: var(--color-ink-3);
}

.person-hero .demo-mark {
  margin-top: 12px;
}

.person-hero__portrait {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 4 / 5;
  justify-self: end;
  margin: 0;
  overflow: hidden;
  border-radius: 4px;
  background: var(--color-surface);
}

.person-hero__photo {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.person-hero__initials {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(120% 90% at 20% 10%, var(--color-surface-blue) 0%, transparent 60%),
    var(--color-surface);
  color: var(--color-ink-2);
  font-size: clamp(48px, 6vw, 76px);
  font-weight: var(--weight-semibold);
  letter-spacing: -0.03em;
}

.person-body {
  display: grid;
  grid-template-columns: 240px minmax(0, 820px);
  gap: clamp(32px, 5vw, 80px);
  align-items: start;
  justify-content: space-between;
  padding-top: clamp(28px, 4vw, 44px);
}

.person-rail {
  position: sticky;
  top: var(--anchor-offset);
  min-width: 0;
  padding-right: 32px;
  border-right: var(--border);
}

.person-rail__block {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: var(--border);
}

.person-rail__block:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.person-rail__label {
  margin: 0;
  font-size: 11px;
  font-weight: var(--weight-semibold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-3);
}

.person-rail__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.person-rail__tag {
  padding: 6px 12px;
  border: var(--border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  font-size: 13px;
  color: var(--color-ink-2);
}

.person-rail__links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.person-rail__link {
  font-size: 15px;
  line-height: 1.4;
  color: var(--color-ink);
  text-decoration: none;
}

.person-rail__link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.person-rail__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-ink-2);
}

.person-rail .arrow-link {
  font-size: 15px;
}

.person-main {
  min-width: 0;
  max-width: 820px;
}

.person-section {
  padding-top: clamp(28px, 3vw, 40px);
  border-top: var(--border);
}

.person-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.person-section__title {
  margin: 0 0 18px;
  font-size: clamp(24px, 2vw, 32px);
  font-weight: var(--weight-semibold);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.person-section__paragraph {
  max-width: 66ch;
  margin: 0 0 18px;
  font-size: clamp(16px, 1.2vw, 18px);
  line-height: 1.7;
  color: var(--color-ink);
}

.person-section__paragraph:last-child {
  margin-bottom: 0;
}

.person-main .bibliography-list {
  border-top: var(--border);
}

.people-work-list {
  display: flex;
  flex-direction: column;
  border-top: var(--border);
}

.people-work-row {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 56px;
  padding: 14px 0;
  border-bottom: var(--border);
  text-decoration: none;
  color: inherit;
}

.people-work-row:hover .people-work-row__title {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.people-work-row__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.people-work-row__title {
  font-size: var(--text-body-s);
  font-weight: var(--weight-medium);
}

.people-work-row__meta {
  font-size: var(--text-meta);
  color: var(--color-ink-2);
}

.person-main .related-list {
  margin-top: 0;
}

/* A profile shows the full project summary; the catalogue row's 2-line clamp hides it. */
.person-main .related-row__text {
  display: block;
  overflow: visible;
  -webkit-line-clamp: unset;
  -webkit-box-orient: initial;
}

.query-problem {
  padding-top: var(--space-16);
}

@media (max-width: 1100px) {
  .person-hero {
    grid-template-columns: minmax(0, 1fr) 260px;
    align-items: start;
  }

  .person-hero__portrait {
    max-width: 260px;
  }

  .person-body {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-8);
  }

  .person-rail {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    padding-right: 0;
    padding-bottom: 24px;
    border-right: 0;
    border-bottom: var(--border);
  }

  .person-rail__block {
    padding-bottom: 0;
    margin-bottom: 0;
    border-bottom: 0;
  }

  .person-main {
    max-width: 100%;
  }
}

@media (max-width: 767px) {
  .people-page,
  .people-profile {
    padding-top: var(--space-6);
  }

  .people-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .person-card__link {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: var(--space-4);
    padding: var(--space-4);
  }

  .person-card__media,
  .person-card__photo,
  .person-card__initials {
    width: 56px;
    height: 56px;
  }

  .person-card__arrow {
    display: none;
  }

  .person-hero {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .person-hero__identity {
    display: flex;
    flex-direction: column;
  }

  .person-hero__name {
    max-width: 100%;
    font-size: clamp(42px, 12vw, 56px);
  }

  .person-hero__role {
    margin-top: 16px;
    font-size: 16px;
  }

  .person-hero__portrait {
    width: 180px;
    max-width: 55%;
    aspect-ratio: 4 / 5;
    justify-self: start;
  }

  /* On narrow screens the reading order title → type → authors reads better than
     the catalogue's date-first row. */
  .person-main .bibliography-row__meta-col {
    order: 0;
  }

  .person-main .bibliography-row__actions {
    order: 2;
  }

  .person-body {
    padding-top: var(--space-6);
  }

  .person-rail {
    grid-template-columns: minmax(0, 1fr);
    gap: 20px;
  }

  .person-section__paragraph {
    font-size: 16px;
    line-height: 1.65;
  }
}

/* Animated orbit field behind the profile hero portrait. */
.person-hero {
  position: relative;
  isolation: isolate;
}

.person-hero__ambient {
  top: -24px;
  right: 0;
  width: min(32vw, 400px);
  opacity: 0.6;
}

.person-hero > :not(.ambient-art) {
  position: relative;
  z-index: 1;
}

@media (max-width: 1100px) {
  .person-hero__ambient {
    width: 280px;
    opacity: 0.28;
  }
}

@media (max-width: 767px) {
  .person-hero__ambient {
    display: none;
  }
}