/* ============================================================
   TrIIPS — Transport Intelligence for Integrated Planning Systems
   Shared stylesheet
   ============================================================ */

:root {
  --ink: #0b1d30;
  --navy: #16334f;
  --navy-soft: #24486b;
  --teal: #178a9e;
  --teal-bright: #1fa3b8;
  --mist: #eef4f7;
  --cloud: #f7fafc;
  --card: #ffffff;
  --line: rgba(22, 51, 79, 0.12);
  --shadow-sm: 0 2px 10px rgba(11, 29, 48, 0.06);
  --shadow-md: 0 12px 40px rgba(11, 29, 48, 0.12);
  --shadow-lg: 0 30px 80px rgba(11, 29, 48, 0.22);
  --radius: 22px;
  --font-display: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--mist);
  color: var(--ink);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

::selection { background: var(--teal); color: #fff; }

/* ---------- Typography ---------- */

h1, h2, h3, h4 { font-family: var(--font-display); color: var(--navy); line-height: 1.12; }

.display {
  font-size: clamp(2.6rem, 6.5vw, 5.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.section-title {
  font-size: clamp(1.9rem, 4vw, 3.1rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1rem;
}

.eyebrow::before {
  content: "";
  width: 26px; height: 2px;
  background: var(--teal);
  border-radius: 2px;
}

.lede {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  color: rgba(11, 29, 48, 0.72);
  max-width: 62ch;
}

.accent { color: var(--teal); }

/* ---------- Navigation ---------- */

.nav {
  position: fixed;
  top: 18px;
  left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s ease;
}

.nav.scrolled { box-shadow: var(--shadow-md); }

.nav-brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-brand img { height: 40px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--navy);
  box-shadow: 0 0 0 rgba(11, 29, 48, 0);
  transition: background-color 0.3s ease,
              color 0.3s ease,
              transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s ease;
  white-space: nowrap;
}

.nav-links a:hover {
  background: rgba(23, 138, 158, 0.1);
  color: var(--teal);
  transform: translateY(-2px);
}

.nav-links a.active {
  background: var(--navy);
  color: #fff;
  box-shadow: 0 8px 22px rgba(11, 29, 48, 0.16);
}

.nav-links a:active { transform: translateY(0) scale(0.97); }

.nav-cta {
  flex-shrink: 0;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 0;
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(11, 29, 48, 0.16);
  transition: background-color 0.3s ease,
              transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s ease;
}

.nav-cta:hover {
  background: var(--teal);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(23, 138, 158, 0.24);
}

.nav-cta:active { transform: translateY(0) scale(0.97); }
.nav-cta .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal-bright); animation: pulse 2s infinite; }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(31, 163, 184, 0.55); }
  55% { box-shadow: 0 0 0 7px rgba(31, 163, 184, 0); }
}

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 10px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--navy); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn-primary { background: var(--navy); color: #fff; box-shadow: 0 10px 26px rgba(22, 51, 79, 0.32); }
.btn-primary:hover { background: var(--teal); transform: translateY(-2px); box-shadow: 0 16px 34px rgba(23, 138, 158, 0.38); }

.btn-ghost { background: rgba(255, 255, 255, 0.7); color: var(--navy); border: 1px solid var(--line); }
.btn-ghost:hover { background: #fff; transform: translateY(-2px); box-shadow: var(--shadow-sm); }

.btn .arrow { transition: transform 0.25s ease; }
.btn:hover .arrow { transform: translateX(4px); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 150px 24px 90px;
  overflow: hidden;
  background:
    radial-gradient(1000px 600px at 85% 10%, rgba(31, 163, 184, 0.14), transparent 60%),
    radial-gradient(900px 700px at 5% 90%, rgba(22, 51, 79, 0.1), transparent 60%),
    linear-gradient(180deg, #fdfefe 0%, var(--mist) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: min(1180px, 100%);
  margin: 0 auto;
}

.hero .display { max-width: 15ch; }

.hero .lede { margin: 1.6rem 0 2.4rem; }

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  margin-bottom: 1.6rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--line);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--navy);
  backdrop-filter: blur(6px);
}

.hero-badge .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); animation: pulse 2s infinite; }

/* animated road-network canvas behind hero text */
.hero-scene {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

.hero-scene svg { width: 100%; height: 100%; }

.road { stroke: rgba(22, 51, 79, 0.1); stroke-width: 26; fill: none; stroke-linecap: round; }
.lane {
  stroke: rgba(23, 138, 158, 0.55);
  stroke-width: 2.6;
  fill: none;
  stroke-linecap: round;
  stroke-dasharray: 14 22;
  animation: laneflow 2.6s linear infinite;
}

@keyframes laneflow { to { stroke-dashoffset: -72; } }

.pin { animation: bob 4s ease-in-out infinite; transform-box: fill-box; transform-origin: center bottom; }
.pin:nth-of-type(2n) { animation-delay: -2s; }

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.cloud {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  filter: blur(46px);
  animation: drift 22s ease-in-out infinite alternate;
}

@keyframes drift {
  from { transform: translateX(-40px); }
  to { transform: translateX(60px); }
}

.scroll-hint {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(11, 29, 48, 0.5);
}

.scroll-hint::after {
  content: "";
  width: 1px;
  height: 34px;
  background: linear-gradient(var(--teal), transparent);
  animation: hintdrop 1.8s ease-in-out infinite;
}

@keyframes hintdrop {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* subtle homepage network enhancements */
.home-page .hero-scene {
  transform: translate3d(var(--network-x, 0), var(--network-y, 0), 0) scale(1.025);
  transition: transform 0.65s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.signal-node { transform-box: fill-box; transform-origin: center; }
.signal-halo {
  fill: rgba(110, 231, 167, 0.07);
  stroke: rgba(23, 138, 158, 0.65);
  stroke-width: 2;
  animation: signal-wave 3s ease-out infinite;
}
.signal-core { fill: #55c995; filter: drop-shadow(0 0 8px rgba(85, 201, 149, 0.8)); }
.signal-node-b .signal-halo { animation-delay: 0.7s; }
.signal-node-c .signal-halo { animation-delay: 1.4s; }

@keyframes signal-wave {
  0% { transform: scale(0.5); opacity: 0; transform-origin: center; }
  28% { opacity: 0.8; }
  100% { transform: scale(1.7); opacity: 0; transform-origin: center; }
}

.sensor-ring {
  fill: none;
  stroke: rgba(31, 163, 184, 0.52);
  stroke-width: 2;
  stroke-dasharray: 7 8;
  transform-box: fill-box;
  transform-origin: center;
  animation: sensor-scan 9s linear infinite;
}
.sensor-ring-delay { animation-direction: reverse; animation-duration: 7s; }

@keyframes sensor-scan { to { transform: rotate(360deg); } }

.hero-motion-toggle {
  position: absolute;
  right: 28px;
  bottom: 26px;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid rgba(22, 51, 79, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: rgba(11, 29, 48, 0.62);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-sm);
  font-size: 0.68rem;
  font-weight: 700;
  transition: color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}
.hero-motion-toggle:hover { color: var(--navy); background: #fff; transform: translateY(-2px); }
.hero-motion-toggle:disabled { cursor: default; opacity: 0.6; transform: none; }
.motion-state-dot { width: 7px; height: 7px; border-radius: 50%; background: #55c995; box-shadow: 0 0 0 5px rgba(85, 201, 149, 0.12); }
.network-paused .motion-state-dot { background: #d9a83a; box-shadow: 0 0 0 5px rgba(217, 168, 58, 0.12); }
.network-paused .lane,
.network-paused .pin,
.network-paused .signal-halo,
.network-paused .sensor-ring { animation-play-state: paused; }

.home-page .explore-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.home-page .explore-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0;
  background: radial-gradient(280px circle at var(--card-x, 50%) var(--card-y, 50%), rgba(31, 163, 184, 0.13), transparent 68%);
  transition: opacity 0.3s ease;
}
.home-page .explore-card:hover::before,
.home-page .explore-card:focus-visible::before { opacity: 1; }

.home-page .footer-inner { justify-content: center; }
.home-page .footer nav { flex-wrap: wrap; justify-content: center; }

/* ---------- Marquee ---------- */

.marquee {
  overflow: hidden;
  padding: 22px 0;
  background: var(--navy);
  color: rgba(255, 255, 255, 0.9);
  white-space: nowrap;
}

.marquee-track {
  display: inline-flex;
  gap: 3.2rem;
  padding-right: 3.2rem;
  animation: marquee 30s linear infinite;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.marquee-track span { display: inline-flex; align-items: center; gap: 3.2rem; }
.marquee-track .sep { color: var(--teal-bright); }

@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Section shell ---------- */

.section { padding: 110px 24px; }
.section-inner { width: min(1180px, 100%); margin: 0 auto; }
.section-head { max-width: 720px; margin-bottom: 3.4rem; }

.section-alt { background: var(--cloud); }

/* ---------- About ---------- */

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.about-copy p + p { margin-top: 1.1rem; }
.about-copy p { color: rgba(11, 29, 48, 0.75); }

.about-visual {
  position: relative;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  padding: 3rem;
  display: grid;
  place-items: center;
}

.about-visual img { width: 78%; }

.about-visual::before {
  content: "";
  position: absolute;
  inset: -18px 18px 18px -18px;
  border-radius: var(--radius);
  border: 1px dashed rgba(23, 138, 158, 0.5);
  z-index: -1;
}

.chip-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 1.8rem; }

.chip {
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(23, 138, 158, 0.1);
  color: var(--teal);
  font-size: 0.82rem;
  font-weight: 600;
}

/* ---------- Research cards ---------- */

.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.research-card {
  position: relative;
  padding: 2rem;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  will-change: transform;
}

.research-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(23, 138, 158, 0.45);
}

.research-card .icon {
  width: 54px; height: 54px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  color: #fff;
  margin-bottom: 1.3rem;
}

.research-card .icon svg { width: 26px; height: 26px; }

.research-card h3 { font-size: 1.12rem; margin-bottom: 0.55rem; }
.research-card p { font-size: 0.92rem; color: rgba(11, 29, 48, 0.68); }

/* ---------- Journey timeline ---------- */

.journey { position: relative; }

.journey-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(320px, 1fr);
  gap: 28px;
  overflow-x: auto;
  padding: 12px 4px 28px;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--teal) transparent;
  cursor: grab;
}

.journey-track.dragging { cursor: grabbing; scroll-snap-type: none; }

.journey-stop {
  scroll-snap-align: start;
  position: relative;
  padding: 2.2rem 2rem 2rem;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  user-select: none;
}

.journey-stop .year {
  font-family: var(--font-display);
  font-size: 5rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  background: linear-gradient(120deg, rgba(22, 51, 79, 0.16), rgba(31, 163, 184, 0.28));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.journey-stop h3 { margin: 0.9rem 0 0.5rem; font-size: 1.15rem; }
.journey-stop p { font-size: 0.92rem; color: rgba(11, 29, 48, 0.68); }

.journey-stop::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--navy), var(--teal));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}

.journey-stop:hover::after { transform: scaleX(1); }

/* ---------- Stats ---------- */

.stats-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.stat {
  text-align: center;
  padding: 2.4rem 1rem;
  border-radius: var(--radius);
  background: var(--navy);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.stat::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(360px 200px at 50% 120%, rgba(31, 163, 184, 0.45), transparent 70%);
}

.stat .num {
  position: relative;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 800;
}

.stat .label {
  position: relative;
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.72);
  margin-top: 0.4rem;
}

/* ---------- CTA / footer ---------- */

.cta {
  margin: 0 24px;
}

.cta-inner {
  width: min(1180px, 100%);
  margin: 0 auto;
  border-radius: 34px;
  padding: clamp(3rem, 7vw, 5.5rem);
  background:
    radial-gradient(700px 400px at 90% -10%, rgba(31, 163, 184, 0.5), transparent 60%),
    var(--navy);
  color: #fff;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.cta-inner h2 { color: #fff; font-size: clamp(1.9rem, 4.4vw, 3.4rem); letter-spacing: -0.02em; }
.cta-inner p { margin: 1.2rem auto 2.2rem; max-width: 52ch; color: rgba(255, 255, 255, 0.78); }

.cta .btn-primary { background: var(--teal); }
.cta .btn-primary:hover { background: var(--teal-bright); }

.footer { padding: 80px 24px 40px; }

.footer-inner {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.6rem;
  border-top: 1px solid var(--line);
  padding-top: 2.2rem;
}

.footer img { height: 46px; }
.footer nav { display: flex; gap: 1.4rem; font-size: 0.9rem; }
.footer nav a:hover { color: var(--teal); }
.footer .fine { width: 100%; font-size: 0.8rem; color: rgba(11, 29, 48, 0.5); }

/* ---------- Inner page hero (About, Research, Journey, People, Contact) ---------- */

.page-hero {
  padding: 190px 24px 70px;
  background:
    radial-gradient(900px 500px at 90% 0%, rgba(31, 163, 184, 0.16), transparent 60%),
    linear-gradient(180deg, #fdfefe, var(--mist));
}

.page-hero-inner { width: min(1180px, 100%); margin: 0 auto; }
.page-hero .lede { margin-top: 1.4rem; }

/* ---------- Home: explore-the-tabs grid ---------- */

.explore-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.explore-card {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 2rem;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.explore-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(23, 138, 158, 0.45);
}

.explore-card .num {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--teal);
}

.explore-card h3 { font-size: 1.35rem; letter-spacing: -0.01em; }
.explore-card p { font-size: 0.92rem; color: rgba(11, 29, 48, 0.68); }

.explore-card .go {
  margin-top: auto;
  padding-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--navy);
}

.explore-card .go .arrow { transition: transform 0.25s ease; }
.explore-card:hover .go { color: var(--teal); }
.explore-card:hover .go .arrow { transform: translateX(4px); }

@media (max-width: 980px) {
  .explore-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .explore-grid { grid-template-columns: 1fr; }
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 2.2rem;
}

.filter-btn {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.75);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--navy);
  box-shadow: 0 0 0 rgba(11, 29, 48, 0);
  transition: border-color 0.3s ease,
              background-color 0.3s ease,
              color 0.3s ease,
              transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.3s ease;
}

.filter-btn:hover {
  border-color: var(--teal);
  color: var(--teal);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(11, 29, 48, 0.08);
}

.filter-btn.active {
  background: var(--navy);
  border-color: var(--navy);
  color: #fff;
  box-shadow: 0 8px 22px rgba(11, 29, 48, 0.16);
}

.filter-btn:active { transform: translateY(0) scale(0.97); }

.members-section { padding: 0 0 110px; }

.members-track {
  --member-card-width: min(330px, 80vw);
  --member-overlap: clamp(72px, 9vw, 120px);
  display: flex;
  align-items: flex-start;
  gap: 0;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  /* The negative card margins create the cover-flow overlap. The extra
     right padding balances the final negative margin at the end of the rail. */
  padding: 40px calc(50vw - min(165px, 40vw) + var(--member-overlap)) 86px calc(50vw - min(165px, 40vw));
  scrollbar-width: none;
  cursor: grab;
  overscroll-behavior-x: contain;
  outline: none;
}

.members-track::-webkit-scrollbar { display: none; }

.members-track.dragging { cursor: grabbing; scroll-snap-type: none; }
.members-track.dragging .member-card { pointer-events: none; }

.member-card {
  flex: 0 0 var(--member-card-width);
  margin-right: calc(-1 * var(--member-overlap));
  scroll-snap-align: center;
  display: flex;
  flex-direction: column;
  border-radius: 26px;
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transform-origin: center top;
  transition: transform 0.46s cubic-bezier(0.22, 1, 0.36, 1),
              opacity 0.38s ease,
              filter 0.38s ease,
              box-shadow 0.35s ease,
              border-color 0.35s ease;
  text-align: left;
  padding: 0;
  user-select: none;
  will-change: transform, opacity, filter;
}

.member-card:hover,
.member-card.is-current { box-shadow: var(--shadow-lg); }

.member-card.is-current {
  border-color: rgba(23, 138, 158, 0.4);
  box-shadow: 0 26px 65px rgba(11, 29, 48, 0.2);
}

.members-track:focus-visible .member-card.is-current {
  outline: 3px solid rgba(23, 138, 158, 0.32);
  outline-offset: 5px;
}

.member-photo {
  position: relative;
  height: 350px;
  flex-shrink: 0;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy), var(--teal));
}

.member-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  transition: transform 0.6s ease;
}

.member-card:hover .member-photo img { transform: scale(1.05); }

/* writings live below the photo */
.member-info {
  padding: 1.3rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex-grow: 1;
}

.member-info .role {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}

.member-info h2 {
  font-size: 1.42rem;
  letter-spacing: -0.02em;
}

.member-info .tenure { font-size: 0.86rem; color: rgba(11, 29, 48, 0.6); font-weight: 500; }

.member-info .badge { margin-top: 0.3rem; }

.member-info .teaser {
  margin-top: 0.35rem;
  font-size: 0.88rem;
  color: rgba(11, 29, 48, 0.7);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  width: fit-content;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  background: rgba(23, 138, 158, 0.12);
  color: var(--teal);
}

.badge.gold { background: rgba(196, 138, 22, 0.14); color: #a06a00; }
.badge.sample { background: rgba(11, 29, 48, 0.07); color: rgba(11, 29, 48, 0.55); }

.member-open {
  margin-top: auto;
  padding-top: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--navy);
}

.member-open .arrow { transition: transform 0.3s ease; }
.member-card:hover .member-open { color: var(--teal); }
.member-card:hover .member-open .arrow { transform: translateX(5px); }

/* ---------- Member modal ---------- */

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(11, 29, 48, 0.55);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-backdrop.open { opacity: 1; pointer-events: auto; }

.modal {
  width: min(940px, 100%);
  max-height: min(88vh, 780px);
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  background: #fff;
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: translateY(26px) scale(0.97);
  transition: transform 0.35s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}

.modal-backdrop.open .modal { transform: translateY(0) scale(1); }

.modal-photo { position: relative; min-height: 320px; background: linear-gradient(135deg, var(--navy), var(--teal)); }
.modal-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top center; }

.modal-body {
  padding: clamp(1.6rem, 3.5vw, 2.8rem);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.modal-body .role {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--teal);
}

.modal-body h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -0.02em; }
.modal-body .tenure { font-size: 0.9rem; font-weight: 600; color: rgba(11, 29, 48, 0.55); }
.modal-body .bio p { font-size: 0.94rem; color: rgba(11, 29, 48, 0.75); }
.modal-body .bio p + p { margin-top: 0.8rem; }

.modal-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.modal-tags .chip { font-size: 0.76rem; padding: 6px 13px; }

.modal-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 0.4rem; }

.modal-links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--navy);
  transition: all 0.25s ease;
}

.modal-links a:hover { background: var(--navy); border-color: var(--navy); color: #fff; }

.modal-close {
  position: absolute;
  top: 16px; right: 16px;
  z-index: 2;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: var(--navy);
  font-size: 1.15rem;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.modal-close:hover { background: var(--navy); color: #fff; transform: rotate(90deg); }

.modal-nav {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.modal-nav button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--navy);
  padding: 8px 12px;
  border-radius: 12px;
  transition: background 0.25s ease, color 0.25s ease;
}

.modal-nav button:hover { background: rgba(23, 138, 158, 0.1); color: var(--teal); }

/* ---------- Reveal on scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ---------- Responsive ---------- */

@media (max-width: 980px) {
  .research-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 2.6rem; }

  .nav-links {
    position: absolute;
    top: calc(100% + 12px);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    display: none;
  }

  .nav-links.open { display: flex; }
  .nav-links a { text-align: center; padding: 12px; }
  .nav-toggle { display: flex; }
  .nav-cta { display: none; }
}

@media (max-width: 720px) {
  .research-grid { grid-template-columns: 1fr; }

  .hero-motion-toggle { right: 16px; bottom: 18px; padding: 8px 10px; }
  .home-page .footer-inner { text-align: center; }
  .home-page .footer nav { width: 100%; gap: 0.65rem 1rem; }

  .members-track {
    --member-card-width: min(300px, 82vw);
    --member-overlap: clamp(52px, 17vw, 82px);
    padding-left: calc(50vw - min(150px, 41vw));
    padding-right: calc(50vw - min(150px, 41vw) + var(--member-overlap));
  }
  .member-card { flex-basis: var(--member-card-width); }
  .member-photo { height: 310px; }

  .modal { grid-template-columns: 1fr; max-height: 92vh; overflow-y: auto; }
  .modal-photo { min-height: 260px; }
  .modal-body { overflow-y: visible; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .home-page .hero-scene { transform: none !important; }
}