/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  color: #1a1a1a; background: #fff; overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Preloader ── */
#preloader {
  position: fixed; inset: 0; background: #fff; z-index: 9999;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}
#preloader.done { opacity: 0; visibility: hidden; pointer-events: none; }
.preloader-ring {
  width: 52px; height: 52px;
  border: 3px solid #e5e7eb; border-top-color: #005aab;
  border-radius: 50%; animation: spin 0.75s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Top Bar ── */
#top-bar {
  background: #003d73; color: #fff;
  font-size: 13px; position: fixed; top: 0; left: 0; right: 0; z-index: 1001;
}
.top-bar-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  height: 38px; display: flex; align-items: center; justify-content: space-between;
}
.top-bar-links { display: flex; align-items: center; gap: 0; }
.top-bar-link {
  color: rgba(255,255,255,0.85); text-decoration: none; font-size: 13px;
  font-weight: 500; padding: 0 14px; border-right: 1px solid rgba(255,255,255,0.2);
  line-height: 38px; display: flex; align-items: center; gap: 5px;
  transition: color 0.2s, background 0.2s;
}
.top-bar-link:first-child { padding-left: 0; }
.top-bar-link:hover { color: #fff; background: rgba(255,255,255,0.07); }
.top-bar-search {
  color: rgba(255,255,255,0.8); text-decoration: none; font-size: 13px;
  font-weight: 500; display: flex; align-items: center; gap: 6px;
  transition: color 0.2s;
}
.top-bar-search:hover { color: #fff; }
/* Top-bar News & Events has a tiny dropdown indicator */
.top-bar-link .tb-arrow { font-size: 8px; opacity: 0.6; }

/* ── Navbar ── */
#navbar {
  position: fixed; left: 0; right: 0; z-index: 1000; top: 38px;
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
  transition: box-shadow 0.3s ease;
}
#navbar.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.10); }
.nav-inner {
  max-width: 1280px; margin: 0 auto; padding: 0 24px;
  height: 64px; display: flex; align-items: center;
  justify-content: space-between; gap: 8px;
}
/* Nav link colour — always dark on white */
.nav-link { color: #1a2540; }
.nav-link:hover { color: #005aab; }

/* Desktop nav list */
#nav-desktop {
  display: none; list-style: none;
  align-items: center; gap: 0; flex: 1; justify-content: flex-end;
}
@media (min-width: 1100px) { #nav-desktop { display: flex; } }
@media (min-width: 1100px) { #mob-toggle { display: none !important; } }

/* ── Mega Dropdown ── */
.has-dropdown { position: relative; }
.nav-trigger {
  display: flex; align-items: center; gap: 4px; padding: 0 14px;
  font-size: 13.5px; font-weight: 500; cursor: pointer; height: 64px;
  text-decoration: none; white-space: nowrap; background: none; border: none;
  color: #1a2540; transition: color 0.2s, border-color 0.2s;
  border-bottom: 3px solid transparent; user-select: none;
}
.nav-trigger:hover { color: #005aab; }
.has-dropdown:hover .nav-trigger { color: #005aab; border-bottom-color: #005aab; }
.nav-trigger .chevron { font-size: 9px; opacity: 0.5; transition: transform 0.2s; }
.has-dropdown:hover .nav-trigger .chevron { transform: rotate(180deg); }

/* Dropdown panel */
.dropdown-panel {
  position: absolute; top: 100%; z-index: 500;
  background: #fff; border-radius: 10px; min-width: 220px;
  border-top: 3px solid #005aab;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
  opacity: 0; visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}
.dropdown-panel.align-left  { left: 0; }
.dropdown-panel.align-right { right: 0; left: auto; }
.dropdown-panel.align-center { left: 50%; transform: translateX(-50%) translateY(-6px); }
.has-dropdown:hover .dropdown-panel,
.has-dropdown:focus-within .dropdown-panel {
  opacity: 1; visibility: visible; transform: translateY(0);
  pointer-events: auto;
}
.has-dropdown:hover .align-center,
.has-dropdown:focus-within .align-center {
  transform: translateX(-50%) translateY(0);
}

/* Dropdown items */
.dd-item {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 18px; font-size: 13px; color: #374151;
  border-bottom: 1px solid #f3f4f6; text-decoration: none;
  transition: background 0.15s, color 0.15s; cursor: pointer;
  background: none; border-left: none; border-right: none; border-top: none; width: 100%;
  text-align: left;
}
.dd-item:last-child { border-bottom: none; }
.dd-item:hover { background: #f0f7ff; color: #005aab; }
.dd-item .dd-arrow { font-size: 9px; opacity: 0.4; }

/* Nested submenu */
.has-sub { position: relative; }
.sub-panel {
  position: absolute; top: -3px; left: 100%;
  background: #fff; border-radius: 10px; min-width: 220px;
  border-top: 3px solid #005aab;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
  opacity: 0; visibility: hidden;
  transform: translateX(-6px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  pointer-events: none; z-index: 600;
}
.has-sub:hover .sub-panel,
.has-sub:focus-within .sub-panel {
  opacity: 1; visibility: visible; transform: translateX(0);
  pointer-events: auto;
}

/* Mega panel (Research) */
.mega-panel {
  position: absolute; top: 100%; left: 0;
  background: #fff; border-radius: 10px; width: 720px;
  border-top: 3px solid #005aab;
  box-shadow: 0 20px 60px rgba(0,0,0,0.12);
  padding: 28px; opacity: 0; visibility: hidden;
  transform: translateY(-6px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  pointer-events: none; z-index: 500;
}
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel {
  opacity: 1; visibility: visible; transform: translateY(0);
  pointer-events: auto;
}
.mega-col-title {
  font-size: 10.5px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: #005aab;
  padding-bottom: 8px; margin-bottom: 10px;
  border-bottom: 1px solid #e5e7eb;
}
.mega-link {
  display: block; padding: 5px 0; font-size: 13px; color: #374151;
  text-decoration: none; transition: color 0.15s;
  border-bottom: none;
}
.mega-link:hover { color: #005aab; }

/* ── Hero Slider ── */
#hero {
  position: relative; width: 100%;
  height: calc(100vh - 102px); /* viewport minus top-bar(38) + navbar(64) */
  min-height: 480px; overflow: hidden;
  margin-top: 102px;
}
.slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0; transition: opacity 0.85s ease;
  pointer-events: none; /* inactive slides must not intercept clicks */
}
.slide.active { opacity: 1; pointer-events: auto; }
.slide-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(130deg, rgba(0,20,60,0.76) 0%, rgba(0,80,160,0.52) 100%);
  pointer-events: none; /* decorative only — never block clicks */
}
.slide-body {
  position: absolute; inset: 0;
  display: flex; flex-direction: column; justify-content: center;
  padding: 0 8%; max-width: 680px;
  z-index: 2; /* sit above the overlay so the CTA button is always clickable */
}
.slide-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.2em; color: rgba(255,255,255,0.55);
  margin-bottom: 12px; opacity: 0; transform: translateY(16px);
  transition: opacity 0.6s ease 0.05s, transform 0.6s ease 0.05s;
}
.slide-heading {
  font-family: 'Libre Baskerville', Georgia, serif;
  font-size: clamp(2rem, 5vw, 3.6rem); font-weight: 700;
  color: #fff; line-height: 1.15; margin-bottom: 20px;
  text-shadow: 0 2px 24px rgba(0,0,0,0.25);
  opacity: 0; transform: translateY(20px);
  transition: opacity 0.65s ease 0.15s, transform 0.65s ease 0.15s;
}
.slide-desc {
  font-size: 1.05rem; color: rgba(255,255,255,0.82);
  line-height: 1.75; margin-bottom: 36px; max-width: 460px;
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.65s ease 0.25s, transform 0.65s ease 0.25s;
}
.slide-cta {
  display: inline-flex; align-items: center; gap: 10px;
  background: #fff; color: #005aab;
  font-weight: 700; font-size: 13px;
  padding: 14px 32px; border-radius: 4px;
  text-decoration: none; text-transform: uppercase; letter-spacing: 0.06em;
  box-shadow: 0 6px 24px rgba(0,0,0,0.18);
  transition: background 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
  opacity: 0; transform: translateY(14px);
  transition: opacity 0.65s ease 0.35s, transform 0.65s ease 0.35s, background 0.2s, color 0.2s, box-shadow 0.2s;
  align-self: flex-start;
}
.slide-cta:hover {
  background: #005aab; color: #fff;
  transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0,90,171,0.4);
}
.slide.active .slide-label,
.slide.active .slide-heading,
.slide.active .slide-desc,
.slide.active .slide-cta {
  opacity: 1; transform: translateY(0);
}

/* Slider arrows */
.sl-arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 20;
  width: 50px; height: 50px; border-radius: 50%;
  background: rgba(255,255,255,0.12); border: 1.5px solid rgba(255,255,255,0.28);
  color: #fff; font-size: 16px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; backdrop-filter: blur(8px);
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.sl-arrow:hover { background: rgba(255,255,255,0.28); border-color: rgba(255,255,255,0.6); transform: translateY(-50%) scale(1.05); }
.sl-prev { left: 28px; }
.sl-next { right: 28px; }

/* Slider dots */
.sl-dots {
  position: absolute; bottom: 32px; left: 50%;
  transform: translateX(-50%); display: flex; gap: 8px; z-index: 20;
}
.sl-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: rgba(255,255,255,0.35); border: none; cursor: pointer;
  transition: background 0.2s, transform 0.2s; padding: 0;
}
.sl-dot.active { background: #fff; transform: scale(1.4); }

/* ── Section Reveals ── */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-l { opacity: 0; transform: translateX(-28px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal-l.in { opacity: 1; transform: translateX(0); }
.reveal-r { opacity: 0; transform: translateX(28px); transition: opacity 0.65s ease, transform 0.65s ease; }
.reveal-r.in { opacity: 1; transform: translateX(0); }
.reveal-d1 { transition-delay: 0.1s; }
.reveal-d2 { transition-delay: 0.2s; }
.reveal-d3 { transition-delay: 0.3s; }

/* ── Stats ── */
.stat-val { font-size: clamp(2.8rem, 6vw, 4.2rem); font-weight: 800; color: #fff; line-height: 1; }

/* ── Research Cards ── */
.research-card {
  border-left: 3px solid #005aab; padding: 20px 22px;
  background: #fff; border-radius: 0 10px 10px 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.05);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}
.research-card:hover {
  transform: translateX(5px);
  box-shadow: 0 6px 24px rgba(0,90,171,0.13);
}
.research-card h3 { font-size: 1rem; font-weight: 700; color: #1a1a1a; margin-bottom: 8px; }
.research-card p { font-size: 0.875rem; color: #5f6b7a; line-height: 1.65; margin-bottom: 10px; }
.research-card a {
  color: #005aab; font-size: 0.82rem; font-weight: 600;
  text-decoration: none; display: inline-flex; align-items: center; gap: 5px;
  transition: color 0.2s, gap 0.2s;
}
.research-card a:hover { color: #003d73; gap: 8px; }

/* ── Quick Links ── */
.quick-link {
  display: flex; flex-direction: column; align-items: center; text-align: center;
  padding: 20px 12px; border-radius: 12px; border: 1px solid #e5e7eb;
  text-decoration: none; transition: border-color 0.2s, background 0.2s, transform 0.2s;
}
.quick-link:hover { border-color: #005aab; background: #f0f7ff; transform: translateY(-3px); }
.ql-icon {
  width: 48px; height: 48px; border-radius: 50%;
  background: #f0f7ff; display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px; transition: background 0.2s;
}
.quick-link:hover .ql-icon { background: #005aab; }
.ql-icon i { color: #005aab; font-size: 18px; transition: color 0.2s; }
.quick-link:hover .ql-icon i { color: #fff; }
.ql-label { font-size: 12px; font-weight: 600; color: #374151; }
.quick-link:hover .ql-label { color: #005aab; }

/* ── Image zoom ── */
.img-zoom { overflow: hidden; }
.img-zoom img { transition: transform 0.55s ease; width: 100%; }
.img-zoom:hover img { transform: scale(1.04); }

/* ── Mobile Drawer ── */
#mob-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.5);
  z-index: 1100; opacity: 0; visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}
#mob-overlay.open { opacity: 1; visibility: visible; }
#mob-drawer {
  position: fixed; top: 0; left: 0; bottom: 0;
  width: 320px; max-width: 90vw; background: #fff;
  z-index: 1200; overflow-y: auto;
  transform: translateX(-100%);
  transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 6px 0 48px rgba(0,0,0,0.14);
}
#mob-drawer.open { transform: translateX(0); }
.mob-acc-btn {
  width: 100%; text-align: left; display: flex;
  align-items: center; justify-content: space-between;
  padding: 15px 20px; font-size: 14px; font-weight: 600; color: #1a1a1a;
  border-bottom: 1px solid #f3f4f6;
  background: none; border-left: none; border-right: none; border-top: none; cursor: pointer;
  transition: color 0.2s, background 0.2s;
}
.mob-acc-btn:hover { color: #005aab; background: #f8fafc; }
.mob-acc-btn.open { color: #005aab; background: #f0f7ff; }
.mob-acc-icon { font-size: 10px; opacity: 0.5; transition: transform 0.25s; }
.mob-acc-btn.open .mob-acc-icon { transform: rotate(180deg); }
.mob-acc-panel { overflow: hidden; max-height: 0; transition: max-height 0.3s ease; }
.mob-acc-panel.open { max-height: 3000px; }
.mob-link {
  display: block; padding: 10px 20px 10px 36px; font-size: 13px;
  color: #4b5563; border-bottom: 1px solid #f9fafb;
  text-decoration: none; transition: color 0.2s, background 0.2s;
}
.mob-link:hover { color: #005aab; background: #f8fafc; }
.mob-link.l2 { padding-left: 52px; color: #6b7280; font-size: 12.5px; }
.mob-link.l3 { padding-left: 68px; color: #9ca3af; font-size: 12px; }
.mob-link.section-head { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: #005aab; padding-left: 36px; padding-top: 14px; padding-bottom: 4px; background: none; }

/* ── Footer ── */
#footer { background: #111827; color: #fff; }
.ft-head {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.1em; color: rgba(255,255,255,0.4);
  margin-bottom: 18px; padding-bottom: 10px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.ft-link {
  display: flex; align-items: center; gap: 6px; padding: 5px 0;
  font-size: 13.5px; color: rgba(255,255,255,0.65);
  text-decoration: none; transition: color 0.2s;
}
.ft-link::before { content: '›'; color: #1f7ae0; font-size: 15px; line-height: 1; }
.ft-link:hover { color: #fff; }




/* ── Focus accessibility ── */
a:focus-visible, button:focus-visible { outline: 2px solid #005aab; outline-offset: 2px; border-radius: 4px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .slide-body { padding: 0 6%; }
}
@media (max-width: 480px) {
  .slide-body { padding: 0 5%; }
}

/* Sub-panel left-side (for overflow items) */
.sub-panel.left-side {
  left: auto; right: 100%; transform: translateX(6px);
}
.has-sub:hover .sub-panel.left-side { transform: translateX(0); }