:root {
  --blue-900: #1f3a5f;
  --blue-700: #163047;
  --blue-500: #5fa8d3;
  --blue-200: #eaf4fb;
  --teal-500: #3ba99c;
  --text-900: #1a1a1a;
  --text-700: #4a4a4a;
  --text-500: #6f7c8a;
  --white: #ffffff;
  --border: #e2e8f0;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  height: 100%;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--text-900);
  background: var(--white);
  line-height: 1.6;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 320ms ease, transform 320ms ease;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

body > main {
  flex: 1;
}

body.page-loaded {
  opacity: 1;
  transform: translateY(0);
}

body.page-leave {
  opacity: 0;
  transform: translateY(8px);
}

.container {
  width: min(1120px, 92vw);
  margin-inline: auto;
}

.narrow {
  width: min(780px, 100%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 4px rgba(31, 58, 95, 0.07);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 18px;
  width: 100%;
  padding-inline: 16px;
}

@media (min-width: 768px) {
  .nav-wrap {
    padding-inline: 24px;
  }
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--blue-900);
  font-weight: 800;
}

.brand-logo {
  height: 52px;
  width: auto;
  object-fit: contain;
  border-radius: 10px;
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.brand-logo:hover {
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(31, 58, 95, 0.13);
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.site-nav a {
  text-decoration: none;
  color: var(--blue-900);
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 8px;
  transition: color 200ms ease, background-color 200ms ease;
}

.site-nav a:hover {
  color: var(--teal-500);
  background: var(--blue-200);
}

.site-nav a.active {
  color: var(--blue-900);
  background: var(--blue-200);
}

.site-nav a.nav-cta {
  background: var(--blue-900);
  color: var(--white);
}

.site-nav a.nav-cta:hover,
.site-nav a.nav-cta.active {
  background: var(--teal-500);
  color: var(--white);
}

.menu-toggle {
  display: none;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--blue-900);
  font-size: 1.2rem;
  padding: 6px 10px;
  border-radius: 10px;
}

.section {
  padding: 84px 0;
}

.bg-soft {
  background: var(--blue-200);
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin-top: 0;
  color: var(--blue-900);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 600;
}

h3 {
  font-weight: 500;
  color: #2c4a73;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}

.hero-content p {
  font-size: 1.1rem;
  color: var(--text-700);
  max-width: 60ch;
}

.hero-image img {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--white);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* Hero video section */
.hero-video {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-video-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-video-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(28, 167, 166, 0.82) 0%, rgba(31, 58, 95, 0.88) 100%);
  z-index: 1;
}

.hero-video-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 64px 0;
}

.hero-video-content h1 {
  color: var(--white);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  margin-bottom: 16px;
}

.hero-video-content p {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.15rem;
  max-width: 56ch;
  line-height: 1.7;
}

.btn-white {
  background: var(--white);
  color: var(--blue-900);
  border-color: var(--white);
  font-weight: 700;
}

.btn-white:hover {
  background: var(--blue-200);
  color: var(--blue-900);
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--white);
  transform: translateY(-2px);
}

.btn {
  display: inline-block;
  border: 1px solid var(--blue-900);
  background: var(--blue-900);
  color: var(--white);
  text-decoration: none;
  font-weight: 700;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
  transition: transform 180ms ease, background-color 180ms ease;
}

.btn:hover {
  transform: translateY(-2px);
  background: var(--blue-700);
}

.btn-outline {
  background: transparent;
  color: var(--blue-900);
  border-color: var(--blue-900);
}

.btn-outline:hover {
  background: var(--blue-200);
}

.section-head {
  text-align: center;
  margin-bottom: 28px;
}

.section-head p {
  color: var(--text-700);
}

.cards {
  display: grid;
  gap: 20px;
}

.three-col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 1px 2px rgba(31, 58, 95, 0.08);
}

.events-empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--clr-muted, #6b7280);
  font-size: 1rem;
}

.split {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  align-items: start;
}

.stat-card {
  background: linear-gradient(135deg, var(--blue-900) 0%, var(--teal-500) 100%);
  border-radius: 16px;
  color: var(--white);
  padding: 24px;
}

.stat-label {
  opacity: 0.85;
  margin: 0;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  color: var(--white);
}

.stat-number {
  margin: 10px 0;
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--white);
}

.stat-small {
  margin: 0;
  opacity: 0.92;
  color: var(--white);
}

.mini-grid {
  margin-top: 28px;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.paper-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 24px;
}

.acronym-list {
  margin: 18px 0 0;
  padding-left: 1.4rem;
  list-style: disc;
  display: grid;
  gap: 18px;
  font-size: 1.25rem;
  line-height: 1.7;
}

.acronym-list strong {
  font-weight: 700;
  color: var(--blue-900);
}

.chip {
  display: inline-block;
  background: var(--blue-200);
  color: var(--blue-900);
  border-radius: 999px;
  padding: 4px 12px;
  font-weight: 700;
  font-size: 0.86rem;
}

.team-grid {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.team-card {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--white);
  transition: transform 220ms ease;
}

.team-card:hover {
  transform: translateY(-4px);
}

.team-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  background: #eef5ff;
}

.team-card-body {
  padding: 12px;
}

.team-card-body h3 {
  margin: 0;
  font-size: 1.05rem;
}

.team-card-body p {
  margin: 6px 0 0;
  color: var(--text-700);
  font-size: 0.92rem;
}

.team-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(17, 59, 120, 0.72);
  opacity: 0;
  transition: opacity 220ms ease;
}

.team-overlay.overlay-teal {
  background: rgba(0, 180, 185, 0.78);
}

.team-overlay img {
  width: 54px;
  height: 54px;
}

.team-card:hover .team-overlay,
.team-card:focus-within .team-overlay {
  opacity: 1;
}

.form-layout {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 20px;
}

.form-centered {
  display: flex;
  justify-content: center;
}

.form-centered .card {
  width: min(720px, 100%);
}

.contact-form {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.contact-form label {
  font-weight: 600;
}

.form-confirm {
  margin-top: 14px;
  padding: 14px 18px;
  background: #e6f7f5;
  border: 1px solid var(--teal-500);
  border-radius: 10px;
  color: #1a6b64;
  font-weight: 600;
  text-align: center;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  font: inherit;
}

.social-list {
  display: grid;
  gap: 10px;
}

.social-list a {
  text-decoration: none;
  font-weight: 600;
  color: var(--blue-500);
}

.mt-lg {
  margin-top: 24px;
}

/* Connect page */
.connect-block {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px 32px;
  margin-bottom: 24px;
}

.connect-block h2 {
  font-size: 1.35rem;
  margin-bottom: 6px;
}

.connect-block > p {
  color: var(--text-700);
  margin-bottom: 18px;
}

.connect-detail {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--border);
}

.connect-label {
  font-weight: 700;
  color: var(--blue-900);
  min-width: 120px;
  flex-shrink: 0;
}

.connect-social-grid {
  display: grid;
  gap: 14px;
}

.connect-social-link {
  display: flex;
  align-items: center;
  gap: 16px;
  text-decoration: none;
  padding: 14px 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 200ms ease, transform 180ms ease;
}

.connect-social-link:hover {
  border-color: var(--teal-500);
  transform: translateY(-2px);
}

.connect-social-link div {
  display: flex;
  flex-direction: column;
}

.connect-social-link strong {
  color: var(--blue-900);
  font-size: 1rem;
}

.connect-social-link span {
  color: var(--text-500);
  font-size: 0.88rem;
}

.connect-social-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--blue-200);
  color: var(--blue-900);
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--blue-900);
  padding: 10px 0;
}

.site-footer p,
.site-footer span,
.site-footer a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.78rem;
  margin: 0;
}

.site-footer a {
  text-decoration: none;
  transition: color 150ms;
}

.site-footer a:hover {
  color: var(--white);
}

.footer-inner {
  width: 100%;
  padding-inline: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  text-align: center;
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.footer-row .dot {
  color: rgba(255, 255, 255, 0.25);
}

.footer-tagline {
  display: none;
}

.section-label {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--blue-900);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 48px 0 6px;
  padding-bottom: 8px;
  border-bottom: 3px solid var(--teal-500);
  display: inline-block;
}

.section-label:first-of-type {
  margin-top: 0;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 48px 24px;
  background: #f8fbff;
  border: 1px solid #dce9f7;
  border-radius: 18px;
}

.empty-state h2 {
  color: var(--blue-900);
  margin: 0 0 8px;
}

.empty-state p {
  color: var(--text-700);
  max-width: 42ch;
  margin: 0 0 24px;
}

p,
li {
  color: var(--text-900);
}

a {
  color: var(--blue-500);
}

a:hover {
  color: var(--teal-500);
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 650ms ease, transform 650ms ease;
}

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

@media (max-width: 1024px) {
  .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .hero-grid,
  .split,
  .form-layout,
  .three-col,
  .two-col,
  .mini-grid {
    grid-template-columns: 1fr;
  }

  .menu-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    width: 100%;
    padding: 8px 0 12px;
    border-top: 1px solid var(--border);
    background: var(--white);
  }

  .site-header.open .nav-wrap {
    flex-wrap: wrap;
  }

  .site-header.open .site-nav {
    display: flex;
  }
}

@media (max-width: 640px) {
  .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}