/* =============================================================================
   sections.css — styles for the static content sections
   (hero, journey, discoveries, publications, capacity widgets bring their own).
   ============================================================================= */

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--gold); color: #241a05; padding: 0.7rem 1.1rem; border-radius: 0 0 10px 0; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ---- About --------------------------------------------------------------- */
.about__grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: clamp(1.6rem, 4vw, 3.2rem); align-items: start; margin-bottom: 3rem; }
.about__bio p { margin-top: 1rem; }
.about__portrait { display: flex; align-items: center; gap: 1.1rem; margin-bottom: 1.6rem; padding-bottom: 1.6rem; border-bottom: 1px solid var(--border-soft); }
.about__portrait img { width: 92px; height: 92px; border-radius: 50%; object-fit: cover; border: 2px solid var(--gold); box-shadow: var(--shadow-gold); flex: none; }
.about__portrait strong { display: block; font-family: var(--font-display); font-size: 1.1rem; }
.about__portrait span { display: block; color: var(--text-dim); font-size: 0.9rem; }
.about__portrait-sub { color: var(--text-faint) !important; font-size: 0.8rem !important; }

.about__timeline-title { font-size: 1rem; color: var(--text-dim); font-weight: 500; margin-bottom: 1.2rem; letter-spacing: 0.02em; }
.ctimeline { position: relative; padding-left: 1.4rem; }
.ctimeline::before { content: ""; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 1px; background: linear-gradient(var(--gold-glow), var(--border-soft)); }
.ctimeline__item { position: relative; display: grid; grid-template-columns: 78px 1fr; gap: 0.8rem; padding: 0.55rem 0; }
.ctimeline__item::before { content: ""; position: absolute; left: -1.4rem; top: 0.95rem; width: 11px; height: 11px; border-radius: 50%; background: var(--space-900); border: 2px solid var(--gold); }
.ctimeline__period { font-family: var(--font-mono); font-size: 0.74rem; color: var(--gold); padding-top: 0.15rem; }
.ctimeline__item strong { font-family: var(--font-display); font-size: 0.98rem; }
.ctimeline__item span { display: block; color: var(--text-faint); font-size: 0.84rem; }

/* ---- Research ------------------------------------------------------------ */
.research__grid { grid-template-columns: repeat(2, 1fr); }
.research__card { position: relative; overflow: hidden; }
.research__card::after { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: linear-gradient(var(--gold), transparent); opacity: 0; transition: opacity 0.3s; }
.research__card:hover::after { opacity: 1; }
.research__card h3 { margin: 0.8rem 0 0.6rem; }
.research__icon { font-size: 1.7rem; line-height: 1; filter: saturate(1.1); }
.instruments { margin-top: 2.4rem; padding: 1.6rem; border: 1px dashed var(--border); border-radius: var(--radius); }
.instruments__label { display: block; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 1rem; }
.instruments__row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.instrument strong { display: block; font-family: var(--font-display); color: var(--gold); font-size: 1.15rem; }
.instrument span { color: var(--text-dim); font-size: 0.86rem; }

/* ---- shared list styles -------------------------------------------------- */
.minihead { font-size: 0.78rem; font-family: var(--font-mono); letter-spacing: 0.18em; text-transform: uppercase; color: var(--gold); margin-bottom: 1.1rem; font-weight: 400; }
.tick-list li { position: relative; padding-left: 1.6rem; margin-bottom: 0.85rem; color: var(--text-dim); font-size: 0.96rem; line-height: 1.55; }
.tick-list li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 7px; height: 7px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 3px rgba(232,184,75,0.12); }
.tick-list--tight li { font-size: 0.9rem; margin-bottom: 0.7rem; }

/* ---- Teaching ------------------------------------------------------------ */
.teaching__grid { display: grid; grid-template-columns: 1fr 1.3fr; gap: clamp(1.6rem, 4vw, 3rem); }
.student-list { display: grid; gap: 0.8rem; }
.student { background: var(--card); border: 1px solid var(--border-soft); border-left: 3px solid var(--gold); border-radius: var(--radius-sm); padding: 0.9rem 1.1rem; transition: background 0.25s, transform 0.25s; }
.student:hover { background: var(--card-hover); transform: translateX(3px); }
.student strong { font-family: var(--font-display); }
.student span { display: block; color: var(--text-faint); font-size: 0.85rem; margin-top: 0.15rem; }

/* ---- Outreach ------------------------------------------------------------ */
.outreach__grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(1.6rem, 4vw, 3rem); align-items: center; }
.outreach__feature { text-align: center; border-color: var(--border); background: radial-gradient(120% 140% at 50% 0%, rgba(232,184,75,0.08), var(--card)); }
.outreach__big { font-family: var(--font-display); font-weight: 600; font-size: clamp(2.6rem, 6vw, 3.8rem); color: var(--gold); line-height: 1; }
.outreach__big span { color: var(--blue); }
.outreach__feature p { margin-top: 0.6rem; }

/* ---- Service / leadership ------------------------------------------------ */
.service__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1.4rem, 3vw, 2.4rem); }
.talk-list li { padding: 0.55rem 0; border-bottom: 1px solid var(--border-soft); font-size: 0.9rem; color: var(--text-dim); display: flex; justify-content: space-between; gap: 0.8rem; }
.talk-list strong { font-family: var(--font-display); font-weight: 500; color: var(--text); }
.talk-list span { font-family: var(--font-mono); font-size: 0.78rem; color: var(--gold); flex: none; }
.service__note { margin-top: 1rem; font-size: 0.84rem; color: var(--text-faint); font-style: italic; }
.awards { margin-top: 2.6rem; }
.awards__label { display: block; font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 1rem; }
.awards__row { display: flex; flex-wrap: wrap; gap: 0.7rem; }
.award-chip { font-size: 0.82rem; color: var(--text-dim); background: var(--card); border: 1px solid var(--border-soft); border-radius: 100px; padding: 0.5rem 1rem; transition: border-color 0.25s, color 0.25s; }
.award-chip:hover { border-color: var(--gold); color: var(--text); }

/* ---- Team gallery -------------------------------------------------------- */
.gallery { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 200px; gap: 0.9rem; }
.gallery__item { position: relative; margin: 0; overflow: hidden; border-radius: var(--radius); border: 1px solid var(--border-soft); }
.gallery__item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.gallery__item:hover img { transform: scale(1.06); }
.gallery__item--feature { grid-column: span 2; grid-row: span 2; }
.gallery__item figcaption {
  position: absolute; inset: auto 0 0 0; padding: 1.4rem 1rem 0.9rem; font-size: 0.82rem; color: var(--text);
  background: linear-gradient(transparent, rgba(4,6,13,0.92)); transform: translateY(0.3rem); opacity: 0; transition: all 0.3s var(--ease);
}
.gallery__item:hover figcaption, .gallery__item:focus-within figcaption { opacity: 1; transform: none; }
.gallery__item--feature figcaption { opacity: 1; transform: none; font-size: 0.9rem; font-family: var(--font-display); }

/* ---- Contact ------------------------------------------------------------- */
.contact__card {
  max-width: 760px; margin-inline: auto; text-align: center;
  padding: clamp(2rem, 5vw, 3.4rem); border-radius: var(--radius);
  border: 1px solid var(--border); background: radial-gradient(140% 120% at 50% -10%, rgba(58,84,144,0.22), var(--card));
  box-shadow: var(--shadow);
}
.contact__card .section-head { margin-inline: auto; }
.contact__addr { font-family: var(--font-mono); font-size: 0.86rem; color: var(--text-faint); margin-bottom: 1.6rem; }
.contact__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; justify-content: center; }

/* ---- Footer -------------------------------------------------------------- */
.footer__top {
  position: absolute; right: clamp(1.2rem, 5vw, 2.5rem); bottom: 2.4rem;
  width: 44px; height: 44px; display: grid; place-items: center; border-radius: 50%;
  border: 1px solid var(--border); color: var(--text-dim); background: var(--card); font-size: 1.1rem; transition: all 0.25s var(--ease);
}
.footer__top:hover { color: var(--gold); border-color: var(--gold); transform: translateY(-3px); }

/* ---- Responsive ---------------------------------------------------------- */
@media (max-width: 900px) {
  .research__grid, .instruments__row, .service__grid { grid-template-columns: 1fr; }
  .about__grid, .teaching__grid, .outreach__grid { grid-template-columns: 1fr; }
  .instruments__row { grid-template-columns: repeat(3, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 170px; }
  .gallery__item--feature { grid-column: span 2; grid-row: span 1; grid-auto-rows: 220px; min-height: 240px; }
}
@media (max-width: 560px) {
  .instruments__row { grid-template-columns: 1fr; }
  .talk-list li { flex-direction: column; gap: 0.2rem; }
  .footer__top { display: none; }
}