/* ============================================================
   PORTFOLIO — SHARED DESIGN SYSTEM
   Scientific-editorial. Dark. Precise.
   Cormorant Garamond × Source Serif 4 × DM Mono
   ============================================================ */

/* ── Custom Properties ─────────────────────────────────────── */
:root {
  /* Backgrounds */
  --bg:             #0b0b0b;
  --surface:        #121212;
  --surface-raised: #191919;
  --surface-hover:  #1f1f1f;

  /* Borders */
  --border:         #242424;
  --border-light:   #191919;

  /* Text */
  --text-primary:   #ede7d9;
  --text-secondary: #a39b90;
  --text-muted:     #6b6560;

  /* Section accents */
  --amber: #c4824a;
  --teal:  #45b09e;
  --sage:  #72a882;
  --sky:   #5e8fb5;
  --gold:  #c8a84e;
  --warm:  #8c7862;
  --rose:  #b85e6e;

  /* Per-page accent (overridden per section) */
  --accent: var(--amber);

  /* Typography */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Source Serif 4', Georgia, serif;
  --font-mono:    'DM Mono', 'Courier New', monospace;

  /* Spacing */
  --sp-4:   4px;
  --sp-8:   8px;
  --sp-12:  12px;
  --sp-16:  16px;
  --sp-24:  24px;
  --sp-32:  32px;
  --sp-48:  48px;
  --sp-64:  64px;
  --sp-80:  80px;
  --sp-96:  96px;

  /* Layout */
  --max-w:    1200px;
  --max-w-wide: 1440px;
  --gutter:   clamp(16px, 4vw, 48px);
  --nav-h:    56px;

  /* Motion */
  --ease:   cubic-bezier(0.25, 0.1, 0.25, 1);
  --t-fast: 140ms;
  --t-base: 240ms;
  --t-slow: 480ms;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.65;
  min-height: 100vh;
}

a   { color: inherit; text-decoration: none; }
img, svg { display: block; }
ul, ol { list-style: none; }

::selection {
  background: var(--accent);
  color: var(--bg);
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Typography ────────────────────────────────────────────── */
.t-display {
  font-family: var(--font-display);
  font-size: clamp(3.8rem, 9vw, 7.5rem);
  font-weight: 300;
  line-height: 0.92;
  letter-spacing: -0.02em;
}

.t-display-sm {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.5vw, 4.5rem);
  font-weight: 300;
  line-height: 1.0;
  letter-spacing: -0.015em;
}

.t-heading-lg {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 2.8vw, 2.4rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.t-heading-md {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 1.8vw, 1.7rem);
  font-weight: 400;
  line-height: 1.15;
}

.t-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.t-mono-sm {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.t-body {
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  font-weight: 300;
  line-height: 1.7;
  color: var(--text-secondary);
}

/* ── Layout ────────────────────────────────────────────────── */
.wrap {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.wrap--wide {
  max-width: var(--max-w-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ── Navigation ────────────────────────────────────────────── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 200;
  background: rgba(11, 11, 11, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-light);
  transition: border-color var(--t-base);
}

.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-12);
}

.nav__logo-mark {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
}

.nav__logo-text {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--text-primary);
  opacity: 0.85;
  transition: opacity var(--t-fast);
}

.nav__logo:hover .nav__logo-text { opacity: 1; }

.nav__links {
  display: flex;
  gap: var(--sp-32);
}

.nav__link {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color var(--t-fast) var(--ease);
  padding: var(--sp-4) 0;
}

.nav__link:hover,
.nav__link.active { color: var(--text-primary); }

/* ── Hamburger button ──────────────────────────────────────── */
.nav__hamburger {
  background: none;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 8px 10px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: var(--text-secondary);
  transition: border-color 0.15s ease, color 0.15s ease;
}
.nav__hamburger:hover { border-color: var(--text-muted); color: var(--text-primary); }
.nav__hamburger:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }
.nav__hamburger-bar {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.22s ease, opacity 0.22s ease;
}
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(2) { opacity: 0; }
.nav__hamburger[aria-expanded="true"] .nav__hamburger-bar:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Hamburger slide-out menu ──────────────────────────────── */
.nav-scrim {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 98;
}
.nav-scrim.open { display: block; }

.nav-menu {
  position: fixed;
  top: var(--nav-h);
  right: 0;
  width: min(300px, 88vw);
  background: var(--surface);
  border-left: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  z-index: 99;
  transform: translateX(100%);
  transition: transform 0.24s ease;
}
.nav-menu.open { transform: translateX(0); }

.nav-menu__item {
  display: flex;
  align-items: center;
  gap: var(--sp-12);
  padding: 14px var(--sp-24);
  text-decoration: none;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-light);
  transition: background 0.15s ease, color 0.15s ease;
}
.nav-menu__item:last-child { border-bottom: none; }
.nav-menu__item:hover,
.nav-menu__item:focus-visible {
  background: var(--surface-raised);
  color: var(--text-primary);
  outline: none;
}
.nav-menu__accent {
  width: 3px;
  height: 22px;
  border-radius: 2px;
  background: var(--item-accent, var(--border));
  flex-shrink: 0;
}
.nav-menu__num {
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--item-accent, var(--text-muted));
  flex-shrink: 0;
  width: 1.8em;
}
.nav-menu__label { font-family: var(--font-display); font-size: 0.95rem; font-weight: 300; }

/* ── Chip ──────────────────────────────────────────────────── */
.chip {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 2px;
  background: transparent;
  transition: border-color var(--t-fast), color var(--t-fast);
}

/* ── Divider Row ───────────────────────────────────────────── */
.rule-row {
  display: flex;
  align-items: center;
  gap: var(--sp-16);
  padding-block: var(--sp-48);
}

.rule-row__line {
  flex: 1;
  height: 1px;
  background: var(--border);
}

.rule-row__label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── Stats Band ────────────────────────────────────────────── */
.stats-band {
  display: flex;
  gap: clamp(var(--sp-32), 6vw, var(--sp-80));
  padding-block: var(--sp-32);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  margin-bottom: var(--sp-64);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.stat__value {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1;
}

.stat__label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── Card Grid ─────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: var(--sp-64);
}

.work-card {
  background: var(--surface);
  padding: var(--sp-32);
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
  transition: background var(--t-fast);
}

.work-card:hover {
  background: var(--surface-raised);
}

.work-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.work-card__index {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent, var(--amber));
}

.work-card__date {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-muted);
}

.work-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.2;
}

.work-card__desc {
  font-size: 0.875rem;
  font-family: var(--font-body);
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.work-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-8);
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 2px;
}

.work-card__link {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  transition: color var(--t-fast);
  align-self: flex-start;
  margin-top: auto;
}

.work-card:hover .work-card__link {
  color: var(--accent, var(--amber));
}

/* ── Figure / Placeholder ──────────────────────────────────── */
.fig-wrap {
  margin-bottom: var(--sp-64);
}

.fig-caption {
  display: flex;
  align-items: center;
  gap: var(--sp-16);
  padding-block: var(--sp-12);
  border-top: 1px solid var(--border);
}

.fig-caption__num {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  color: var(--accent, var(--amber));
  text-transform: uppercase;
}

.fig-caption__text {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.fig-placeholder {
  background: var(--surface);
  border: 1px solid var(--border);
  border-bottom: none;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
}

.fig-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 39px,
      var(--border) 39px,
      var(--border) 40px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 39px,
      var(--border-light) 39px,
      var(--border-light) 40px
    );
  opacity: 0.5;
}

.fig-placeholder__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-12);
}

.fig-placeholder__label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
}

/* ── Section Hero ──────────────────────────────────────────── */
.section-hero {
  padding-top: calc(var(--nav-h) + var(--sp-80));
  padding-bottom: var(--sp-64);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.section-hero__ghost-num {
  position: absolute;
  bottom: -0.15em;
  right: calc(var(--gutter) - 0.04em);
  font-family: var(--font-mono);
  font-size: clamp(8rem, 20vw, 16rem);
  font-weight: 400;
  line-height: 1;
  color: var(--border);
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.04em;
}

.section-hero__content {
  position: relative;
  z-index: 1;
}

.section-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: var(--sp-16);
  margin-bottom: var(--sp-24);
}

.section-hero__accent {
  width: clamp(32px, 4vw, 56px);
  height: 2px;
  background: var(--accent, var(--amber));
  flex-shrink: 0;
}

.section-hero__label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent, var(--amber));
}

.section-hero__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(3rem, 7vw, 5.5rem);
  line-height: 0.95;
  color: var(--text-primary);
  margin-bottom: var(--sp-32);
  letter-spacing: -0.02em;
}

.section-hero__sub {
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* ── Section Content ───────────────────────────────────────── */
.section-content {
  padding-block: var(--sp-64);
}

.section-content__heading {
  display: flex;
  align-items: baseline;
  gap: var(--sp-24);
  margin-bottom: var(--sp-32);
}

.section-content__heading-text {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1.8vw, 1.6rem);
  font-weight: 300;
  color: var(--text-primary);
}

.section-content__heading-rule {
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Timeline ──────────────────────────────────────────────── */
.timeline {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 0 var(--sp-32);
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 76px;
  top: 12px;
  bottom: 0;
  width: 1px;
  background: var(--border);
}

.timeline__year {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-muted);
  padding-top: 5px;
  text-align: right;
  letter-spacing: 0.06em;
}

.timeline__item {
  padding-bottom: var(--sp-48);
  padding-left: var(--sp-32);
  position: relative;
}

.timeline__item::before {
  content: '';
  position: absolute;
  left: calc(var(--sp-32) / -2 - 2px);
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent, var(--amber));
}

.timeline__role {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: var(--sp-4);
}

.timeline__org {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--accent, var(--amber));
  margin-bottom: var(--sp-12);
  text-transform: uppercase;
}

.timeline__desc {
  font-size: 0.875rem;
  font-family: var(--font-body);
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Section Navigation (prev / next) ──────────────────────── */
.section-nav {
  display: flex;
  align-items: stretch;
  border-top: 1px solid var(--border);
  margin-top: var(--sp-80);
}

.section-nav__link {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  padding: var(--sp-32);
  transition: background var(--t-fast);
}

.section-nav__link:hover {
  background: var(--surface);
}

.section-nav__link + .section-nav__link {
  border-left: 1px solid var(--border);
  align-items: flex-end;
  text-align: right;
}

.section-nav__dir {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.section-nav__name {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.1;
}

.section-nav__num {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

/* ── Section Strip (homepage) ──────────────────────────────── */
.section-strip {
  padding-bottom: var(--sp-96);
}

.section-strip__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--sp-16);
  margin-bottom: 0;
  border-bottom: 1px solid var(--border);
}

.section-strip__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
  border-top: none;
}

.section-entry {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-20);
  padding: var(--sp-32);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  transition: background var(--t-fast);
  position: relative;
  overflow: hidden;
}

.section-entry:nth-child(3n) {
  border-right: none;
}

.section-entry:hover {
  background: var(--surface);
}

.section-entry__accent {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--entry-accent, var(--amber));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-base) var(--ease);
}

.section-entry:hover .section-entry__accent {
  transform: scaleX(1);
}

.section-entry__num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--entry-accent, var(--text-muted));
  padding-top: 3px;
  flex-shrink: 0;
  opacity: 0.8;
}

.section-entry__body {
  flex: 1;
}

.section-entry__title {
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.2;
  margin-bottom: var(--sp-8);
}

.section-entry__sub {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.section-entry__arrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  transition: color var(--t-fast), transform var(--t-fast);
  padding-top: 3px;
  flex-shrink: 0;
}

.section-entry:hover .section-entry__arrow {
  color: var(--entry-accent, var(--amber));
  transform: translateX(4px);
}

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  padding-block: var(--sp-32);
  border-top: 1px solid var(--border-light);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-16);
}

.footer__links {
  display: flex;
  gap: var(--sp-24);
}

.footer__link {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color var(--t-fast) var(--ease);
}

.footer__link:hover { color: var(--text-secondary); }

/* ── Scroll Reveal ─────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.55s var(--ease),
    transform 0.55s var(--ease);
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ── Methods Grid (Data Science) ───────────────────────────── */
.methods-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: var(--sp-64);
}

.method-item {
  background: var(--surface);
  padding: var(--sp-24);
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
}

.method-item__name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 300;
  color: var(--text-primary);
}

.method-item__type {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ── Research Areas List ───────────────────────────────────── */
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: var(--sp-64);
}

.research-item {
  background: var(--surface);
  padding: var(--sp-32);
}

.research-item__num {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  color: var(--accent, var(--sage));
  text-transform: uppercase;
  margin-bottom: var(--sp-16);
}

.research-item__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  font-weight: 300;
  color: var(--text-primary);
  margin-bottom: var(--sp-12);
  line-height: 1.2;
}

.research-item__desc {
  font-size: 0.875rem;
  font-family: var(--font-body);
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Plate Figure (Life Sciences microscopy) ───────────────── */
.fig-plate {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-bottom: none;
}

.fig-plate__panel {
  background: var(--surface);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.fig-plate__panel::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 40% 40%, rgba(114,168,130,0.06) 0%, transparent 70%);
}

.fig-plate__panel-label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  position: absolute;
  bottom: var(--sp-12);
  left: var(--sp-12);
  z-index: 1;
}

/* ── KPI Cards (Operations) ────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: var(--sp-48);
}

.kpi-card {
  background: var(--surface);
  padding: var(--sp-32);
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
}

.kpi-card__value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1;
}

.kpi-card__value em {
  font-style: normal;
  color: var(--accent, var(--sky));
}

.kpi-card__label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.kpi-card__sub {
  font-size: 0.8rem;
  font-family: var(--font-body);
  color: var(--text-muted);
  margin-top: var(--sp-8);
}

/* ── Course Cards (Teaching) ───────────────────────────────── */
.course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: var(--sp-24);
  margin-bottom: var(--sp-64);
}

.course-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--sp-32);
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
  transition: background var(--t-fast);
}

.course-card:hover {
  background: var(--surface-raised);
}

.course-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.course-card__code {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent, var(--gold));
}

.course-card__level {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-muted);
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 2px;
}

.course-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.2;
}

.course-card__desc {
  font-size: 0.875rem;
  font-family: var(--font-body);
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.course-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--sp-16);
  border-top: 1px solid var(--border);
}

.course-card__institution {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}

.course-card__students {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--text-muted);
}

/* ── Projects Bento (Selected Projects) ────────────────────── */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-bottom: var(--sp-64);
}

.bento-card {
  background: var(--surface);
  padding: var(--sp-32);
  display: flex;
  flex-direction: column;
  gap: var(--sp-16);
  transition: background var(--t-fast);
}

.bento-card:hover {
  background: var(--surface-raised);
}

.bento-card--featured {
  grid-column: span 2;
  padding: var(--sp-48);
}

.bento-card--tall {
  grid-row: span 2;
}

.bento-card__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent, var(--amber));
}

.bento-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.15;
}

.bento-card--featured .bento-card__title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

.bento-card__desc {
  font-size: 0.875rem;
  font-family: var(--font-body);
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.bento-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-8);
}

.bento-card__link {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  transition: color var(--t-fast);
  align-self: flex-start;
  margin-top: auto;
}

.bento-card:hover .bento-card__link {
  color: var(--accent, var(--amber));
}

.bento-card__figure {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.bento-card__figure::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      45deg,
      transparent,
      transparent 8px,
      var(--border) 8px,
      var(--border) 9px
    );
  opacity: 0.3;
}

/* ── Bio Contact ───────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.contact-item {
  background: var(--surface);
  padding: var(--sp-32);
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  transition: background var(--t-fast);
}

.contact-item:hover {
  background: var(--surface-raised);
}

.contact-item__label {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.contact-item__value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--text-primary);
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .section-strip__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-entry:nth-child(3n) {
    border-right: 1px solid var(--border);
  }

  .section-entry:nth-child(2n) {
    border-right: none;
  }

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

  .bento-card--featured {
    grid-column: span 2;
    padding: var(--sp-32);
  }
}

@media (max-width: 768px) {
  .nav__links { display: none; }

  .section-strip__grid {
    grid-template-columns: 1fr;
  }

  .section-entry {
    border-right: none !important;
  }

  .bento-grid {
    grid-template-columns: 1fr;
  }

  .bento-card--featured {
    grid-column: span 1;
  }

  .timeline {
    grid-template-columns: 52px 1fr;
  }

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

  .section-hero__ghost-num {
    opacity: 0.15;
  }

  .section-nav {
    flex-direction: column;
  }

  .section-nav__link + .section-nav__link {
    border-left: none;
    border-top: 1px solid var(--border);
    align-items: flex-start;
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
  * { transition-duration: 0.01ms !important; }
}

/* ============================================================
   SECTION HERO — alternate element class names used by pages
   (aliases to match HTML structure written for section pages)
============================================================ */

/* .section-hero__inner — wraps content, sits above ghost number */
.section-hero__inner {
  position: relative;
  z-index: 1;
}

/* .section-hero__meta — eyebrow row: label + accent rule */
.section-hero__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-16);
  margin-bottom: var(--sp-24);
}

/* .section-hero__rule — accent bar beside label (alias for __accent) */
.section-hero__rule {
  width: clamp(32px, 4vw, 56px);
  height: 2px;
  background: var(--accent, var(--amber));
  flex-shrink: 0;
}

/* .section-hero__lead — lead paragraph (alias for __sub) */
.section-hero__lead {
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

/* .section-hero__ghost — large ghost number (alias for __ghost-num) */
.section-hero__ghost {
  position: absolute;
  bottom: -0.15em;
  right: calc(var(--gutter) - 0.04em);
  font-family: var(--font-mono);
  font-size: clamp(8rem, 20vw, 16rem);
  font-weight: 400;
  line-height: 1;
  color: var(--border);
  pointer-events: none;
  user-select: none;
  letter-spacing: -0.04em;
  z-index: 0;
}

/* stats-band__inner — inner flex layout for stats band */
.stats-band__inner {
  display: flex;
  align-items: stretch;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  flex-wrap: wrap;
}

.stats-band__inner .stat {
  flex: 1 1 120px;
  background: var(--surface);
  padding: var(--sp-20) var(--sp-28);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

/* method-card (used by data-science.html) */
.method-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--sp-16) var(--sp-20);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  transition: background var(--t-fast);
}

.method-card:hover { background: var(--surface-raised); }

.method-card__name {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent, var(--teal));
}

.method-card__note {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* research-card (used by life-sciences.html) */
.research-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--sp-16) var(--sp-20);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  transition: background var(--t-fast);
}

.research-card:hover { background: var(--surface-raised); }

.research-card__name {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent, var(--sage));
}

.research-card__note {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* kpi-card__note alias */
.kpi-card__note {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* work-card sub-elements */
.work-card__inner {
  padding: var(--sp-24) var(--sp-24);
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
  height: 100%;
}

.work-card__num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--accent, var(--text-muted));
}

.work-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.4vw, 1.3rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.2;
}

.work-card__desc {
  font-size: clamp(0.83rem, 0.95vw, 0.9rem);
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.work-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-8);
  margin-top: auto;
  padding-top: var(--sp-8);
}

.work-card__tag {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 2px 7px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 2px;
}

/* course-card sub-elements */
.course-card__inner {
  padding: var(--sp-24);
  display: flex;
  flex-direction: column;
  gap: var(--sp-8);
  height: 100%;
}

.course-card__num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--accent, var(--gold));
}

.course-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.2;
}

.course-card__info {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.course-card__desc {
  font-size: clamp(0.83rem, 0.95vw, 0.9rem);
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.course-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-8);
  margin-top: auto;
  padding-top: var(--sp-8);
}

.course-card__tag {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 2px 7px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 2px;
}

/* bento-card sub-elements */
.bento-card__inner {
  padding: var(--sp-28) var(--sp-28);
  display: flex;
  flex-direction: column;
  gap: var(--sp-12);
  height: 100%;
}

.bento-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.bento-card__num {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.bento-card__tag {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 2px 8px;
  background: var(--accent, var(--amber));
  color: var(--bg);
  border-radius: 2px;
}

.bento-card__title {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 1.8vw, 1.6rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1.1;
}

.bento-card__desc {
  font-size: clamp(0.875rem, 1vw, 0.95rem);
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.bento-card__fig { margin-block: var(--sp-12); }

.bento-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-16);
  margin-top: auto;
  padding-top: var(--sp-12);
  flex-wrap: wrap;
}

.bento-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-8);
}

.bento-card__chip {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 2px 7px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 2px;
}

.bento-card__link {
  font-family: var(--font-mono);
  font-size: 0.63rem;
  letter-spacing: 0.06em;
  color: var(--accent, var(--amber));
  transition: opacity var(--t-fast);
  white-space: nowrap;
}

.bento-card__link:hover { opacity: 0.7; }

/* section-nav sub-elements */
.section-nav__inner {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-16);
}

.section-nav__dir {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: block;
}

.section-nav__name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 300;
  color: var(--text-primary);
  display: block;
}

.section-nav__link--prev { text-align: left; }
.section-nav__link--next { text-align: right; }

/* section-strip sub-elements */
.section-strip__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--sp-16);
  margin-bottom: var(--sp-24);
  border-bottom: 1px solid var(--border);
}

/* stat__num — alias for stat__value */
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 300;
  color: var(--text-primary);
  line-height: 1;
}

/* fig-plate__cell — alias for __panel */
.fig-plate__cell {
  background: var(--surface);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* fig-placeholder sub-element */
.fig-placeholder__label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: center;
  padding: var(--sp-16);
}