/* ── About Page ──────────────────────────────────────────── */

.ab-wrap {
  padding: 4rem 3rem 6rem;
}

/* ── Hero ────────────────────────────────────────────────── */

.ab-hero {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 4rem;
  align-items: stretch;
  margin-bottom: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid #e2e8f0;
}

.ab-hero__photo-wrap {
  min-height: 100%;
}

.ab-hero__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
  filter: grayscale(15%);
}

.ab-hero__content {
  padding-top: 0.5rem;
}

.ab-hero__name {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.5px;
  line-height: 1.1;
  margin: 0 0 0.5rem;
}

.ab-hero__title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #94a3b8;
  margin: 0 0 2rem;
}

.ab-hero__bio p {
  font-size: 1rem;
  line-height: 1.8;
  color: #334155;
  margin-bottom: 1.25rem;
}

.ab-hero__bio p:last-child {
  margin-bottom: 0;
}

.ab-hero__bio a {
  color: #0f172a;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.ab-hero__bio a:hover {
  color: #475569;
}

/* ── Stats strip ─────────────────────────────────────────── */

.ab-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid #e2e8f0;
  margin-bottom: 4rem;
}

.ab-stat {
  padding: 1.5rem 2rem;
  border-right: 1px solid #e2e8f0;
}

.ab-stat:last-child {
  border-right: none;
}

.ab-stat__number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: #0f172a;
  line-height: 1;
  margin-bottom: 0.35rem;
}

.ab-stat__label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: #94a3b8;
}

/* ── Section header ──────────────────────────────────────── */

.ab-section {
  margin-bottom: 4rem;
}

.ab-section__header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.ab-section__title {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #94a3b8;
  white-space: nowrap;
  margin: 0;
}

.ab-section__rule {
  flex: 1;
  height: 1px;
  background: #e2e8f0;
}

/* ── Exhibitions list ────────────────────────────────────── */

.ab-exhibitions {
  list-style: none;
  margin: 0;
  padding: 0;
  columns: 2;
  column-gap: 3rem;
}

.ab-exhibition {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid #f1f5f9;
  align-items: baseline;
  break-inside: avoid;
}

.ab-exhibition:last-child {
  border-bottom: none;
}

.ab-exhibition__year {
  font-size: 0.72rem;
  font-weight: 700;
  color: #cbd5e1;
  letter-spacing: 0.5px;
}

.ab-exhibition__name {
  font-size: 0.9rem;
  color: #334155;
  line-height: 1.4;
}

/* ── Patents list ────────────────────────────────────────── */

.ab-patents {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 3rem;
}

.ab-patent {
  padding: 1.25rem 0;
  border-bottom: 1px solid #f1f5f9;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: start;
}

.ab-patent:last-child {
  border-bottom: none;
}

.ab-patent__title {
  font-size: 0.9rem;
  font-weight: 600;
  color: #0f172a;
  text-decoration: none;
  line-height: 1.4;
  display: block;
  margin-bottom: 0.3rem;
}

.ab-patent__title:hover {
  color: #475569;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.ab-patent__meta {
  font-size: 0.75rem;
  color: #94a3b8;
  letter-spacing: 0.3px;
}

.ab-patent__year {
  font-size: 0.72rem;
  font-weight: 700;
  color: #cbd5e1;
  white-space: nowrap;
  padding-top: 0.15rem;
}

/* ── Responsive ──────────────────────────────────────────── */

@media (max-width: 900px) {
  .ab-hero {
    grid-template-columns: 260px 1fr;
    gap: 2.5rem;
  }

  .ab-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .ab-stat:nth-child(2) {
    border-right: none;
  }

  .ab-stat:nth-child(3),
  .ab-stat:nth-child(4) {
    border-top: 1px solid #e2e8f0;
  }
}

@media (max-width: 680px) {
  .ab-wrap {
    padding: 2rem 1.25rem 4rem;
  }

  .ab-hero {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .ab-hero__photo-wrap {
    aspect-ratio: 4 / 3;
  }

  .ab-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .ab-exhibitions {
    columns: 1;
  }

  .ab-patents {
    grid-template-columns: 1fr;
  }
}

/* ── Dark mode ───────────────────────────────────────────── */

.dark .ab-hero__name    { color: #f1f5f9; }
.dark .ab-hero__bio p   { color: #94a3b8; }
.dark .ab-hero__bio a   { color: #f1f5f9; }
.dark .ab-hero          { border-bottom-color: #1e293b; }
.dark .ab-stats         { border-color: #1e293b; }
.dark .ab-stat          { border-right-color: #1e293b; }
.dark .ab-stat__number  { color: #f1f5f9; }
.dark .ab-section__rule { background: #1e293b; }
.dark .ab-exhibition    { border-bottom-color: #1e293b; }
.dark .ab-exhibition__name { color: #94a3b8; }
.dark .ab-patent        { border-bottom-color: #1e293b; }
.dark .ab-patent__title { color: #f1f5f9; }
.dark .ab-patent__title:hover { color: #94a3b8; }