/* =============================================================================
   ISBR Research Programmes — Landing Page Stylesheet
   Brand: Crimson #8C2027 | Gold #CC7A1A
   Fonts: Cormorant Garamond (heading / Century eq.) | Inter (body / Calibri eq.)
   ============================================================================= */

/* ── 1. Custom Properties ─────────────────────────────────────────────────── */
:root {
  /* Brand Palette */
  --clr-primary:      #8C2027;
  --clr-primary-dk:   #6A1519;
  --clr-primary-lt:   #B52830;
  --clr-gold:         #CC7A1A;
  --clr-gold-lt:      #E8973A;
  --clr-dark:         #1C1C24;
  --clr-mid:          #4A4A58;
  --clr-muted:        #7A7A8A;
  --clr-border:       #E4DDD6;
  --clr-cream:        #FDF8F2;
  --clr-light:        #F5EDE4;
  --clr-white:        #FFFFFF;

  /* Typography */
  --ff-serif:    'EB Garamond', 'Adobe Garamond Pro', 'Garamond', 'Georgia', serif;
  --ff-sans:     'Inter', 'Segoe UI', -apple-system, sans-serif;

  /* Type Scale */
  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-md:   1.125rem;
  --fs-lg:   1.375rem;
  --fs-xl:   1.75rem;
  --fs-2xl:  2.25rem;
  --fs-3xl:  3rem;
  --fs-4xl:  3.75rem;
  --fs-hero: clamp(3rem, 6vw, 5.5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --container-max: 1200px;
  --container-pad: clamp(1.25rem, 4vw, 2rem);

  /* Effects */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.14);
  --shadow-xl:  0 24px 64px rgba(0,0,0,0.18);
  --radius-sm:  3px;
  --radius-md:  6px;
  --radius-lg:  12px;
  --radius-xl:  20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── 2. Reset & Base ──────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: auto; /* default — GSAP/JS controls smooth scroll */
}

body {
  font-family: var(--ff-sans);
  font-size: var(--fs-base);
  font-weight: 400;
  line-height: 1.65;
  color: var(--clr-dark);
  background-color: var(--clr-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, video, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea {
  font: inherit;
  border: none;
  outline: none;
  background: none;
}
ul, ol { list-style: none; }

/* ── 3. Typography ────────────────────────────────────────────────────────── */
.t-tag {
  display: inline-block;
  font-family: var(--ff-sans);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: var(--space-3);
}

.t-heading {
  font-family: var(--ff-serif);
  font-weight: 700;
  line-height: 1.15;
  color: var(--clr-dark);
}

.t-heading--hero   { font-size: var(--fs-hero); font-weight: 700; }
.t-heading--h1     { font-size: var(--fs-4xl); }
.t-heading--h2     { font-size: var(--fs-3xl); }
.t-heading--h3     { font-size: var(--fs-2xl); }
.t-heading--h4     { font-size: var(--fs-xl); }
.t-heading--h5     { font-size: var(--fs-lg); }

.t-body {
  font-family: var(--ff-sans);
  font-size: var(--fs-base);
  color: var(--clr-mid);
  line-height: 1.75;
}

.t-body--lg { font-size: var(--fs-md); }
.t-body--sm { font-size: var(--fs-sm); }

/* ── 4. Layout ────────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.container--wide  { max-width: 1400px; }
.container--narrow { max-width: 860px; }

.section { padding-block: var(--space-24); }
.section--sm { padding-block: var(--space-16); }
.section--lg { padding-block: var(--space-32); }
.section--flush { padding-block: 0; }

/* ── 5. Components ────────────────────────────────────────────────────────── */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--ff-sans);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
}

.btn--primary {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}
.btn--primary:hover {
  background: var(--clr-primary-dk);
  border-color: var(--clr-primary-dk);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(140,32,39,0.3);
}

.btn--outline {
  background: transparent;
  color: var(--clr-white);
  border-color: rgba(255,255,255,0.55);
}
.btn--outline:hover {
  background: var(--clr-white);
  color: var(--clr-primary);
  border-color: var(--clr-white);
}

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

.btn--ghost {
  background: transparent;
  color: var(--clr-mid);
  padding-inline: 0;
  border: none;
}
.btn--ghost:hover { color: var(--clr-primary); }

/* Inline link with arrow */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-primary);
  transition: gap var(--transition);
}
.link-arrow:hover { gap: var(--space-3); }
.link-arrow::after { content: '→'; }

/* Section header row */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
  flex-wrap: wrap;
}
.section-header__rule {
  flex: 1;
  height: 1px;
  background: var(--clr-border);
  margin-bottom: 0.5rem;
  min-width: 40px;
}

/* Divider line accent */
.rule-accent {
  width: 48px;
  height: 3px;
  background: var(--clr-primary);
  margin-top: var(--space-4);
}

/* Badge / chip */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.badge--gold {
  background: rgba(204,122,26,0.12);
  color: var(--clr-gold);
  border: 1px solid rgba(204,122,26,0.35);
}
.badge--primary {
  background: rgba(140,32,39,0.08);
  color: var(--clr-primary);
  border: 1px solid rgba(140,32,39,0.2);
}
.badge--white {
  background: rgba(255,255,255,0.12);
  color: var(--clr-white);
  border: 1px solid rgba(255,255,255,0.3);
}
.badge__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: badge-pulse 2s ease-in-out infinite;
}
@keyframes badge-pulse {
  0%,100%{ opacity:1; transform:scale(1); }
  50%    { opacity:0.4; transform:scale(1.5); }
}

/* ── 6. Navbar ────────────────────────────────────────────────────────────── */
header {
  position: sticky;
  top: 0;
  z-index: 200;
}
.navbar {
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 2px solid rgba(140, 32, 39, 0.35);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}
.navbar__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
  gap: var(--space-6);
}
.navbar__logo {
  justify-self: start;
}
.navbar__logo img {
  height: 72px;
  width: auto;
  object-fit: contain;
  display: block;
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.navbar__nav-left  { justify-self: end; }
/* Right nav gets the Apply CTA appended via CSS */
.navbar__nav-right { justify-self: start; }

.navbar__nav a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--clr-mid);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
  white-space: nowrap;
  position: relative;
}
/* Underline slide-in on hover / active */
.navbar__nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;   /* sits on top of the border */
  left: 0.8rem;
  right: 0.8rem;
  height: 2px;
  background: var(--clr-primary);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 2px;
}
.navbar__nav a:hover,
.navbar__nav a.is-active { color: var(--clr-primary); }
.navbar__nav a:hover::after,
.navbar__nav a.is-active::after { transform: scaleX(1); }

/* Inline Apply Now button inside right nav */
.navbar__apply-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--clr-primary);
  color: var(--clr-white) !important;
  padding: 0.45rem 1.1rem !important;
  border-radius: var(--radius-sm);
  font-weight: 700 !important;
  font-size: var(--fs-xs) !important;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background var(--transition), transform var(--transition) !important;
  white-space: nowrap;
}
.navbar__apply-btn:hover {
  background: var(--clr-primary-dk);
  transform: translateY(-1px);
  color: var(--clr-white) !important;
}
.navbar__apply-btn::after { display: none !important; }

/* Hamburger */
.navbar__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-2);
}
.navbar__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── 8. Hero ──────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--clr-dark);
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}
.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
/* Dark crimson overlay on top of photo */
.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(14,10,10,0.78) 0%, rgba(28,6,8,0.72) 50%, rgba(14,10,10,0.82) 100%);
  z-index: 1;
}
.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14,10,10,0.6) 0%, transparent 60%);
  z-index: 2;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding-block: 120px var(--space-24);
  max-width: 860px;
}

/* Centered variant — all child elements are centred */
.hero__content--centered {
  margin-inline: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__badge { margin-bottom: var(--space-6); }

.hero__title {
  font-family: var(--ff-serif);
  font-size: var(--fs-hero);
  font-weight: 700;
  line-height: 1.08;
  color: var(--clr-white);
  margin-bottom: var(--space-6);
}
.hero__title .line { display: block; overflow: hidden; }
.hero__title .line-inner { display: block; }
.hero__title .t-accent { color: var(--clr-gold-lt); }

.hero__sub {
  font-size: var(--fs-md);
  color: rgba(255,255,255,0.72);
  line-height: 1.75;
  max-width: 580px;
  margin-bottom: var(--space-10);
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
}

.hero__programmes {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-16);
}
.hero__prog-chip {
  padding: 0.45rem 1rem;
  border: 1px solid rgba(255,255,255,0.22);
  border-radius: 2px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: rgba(255,255,255,0.8);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(6px);
  transition: var(--transition);
}
.hero__prog-chip:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.45);
  color: var(--clr-white);
}

.hero__stats {
  display: flex;
  gap: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.12);
  flex-wrap: wrap;
  /* When centred, distribute evenly */
  justify-content: center;
}
.hero__stat-num {
  font-family: var(--ff-serif);
  font-size: 2.6rem;
  font-weight: 700;
  color: var(--clr-gold-lt);
  line-height: 1;
}
.hero__stat-label {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.52);
  margin-top: var(--space-1);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── Hero entrance (CSS keyframes — no scroll trigger needed for above-fold) ── */
@keyframes heroIn {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero__badge     { animation: heroIn 0.65s cubic-bezier(0.16,1,0.3,1) both 0.15s; }
.hero__title     { animation: heroIn 0.8s  cubic-bezier(0.16,1,0.3,1) both 0.3s;  }
.hero__sub       { animation: heroIn 0.7s  cubic-bezier(0.16,1,0.3,1) both 0.5s;  }
.hero__programmes { animation: heroIn 0.65s cubic-bezier(0.16,1,0.3,1) both 0.65s; }
.hero__actions   { animation: heroIn 0.65s cubic-bezier(0.16,1,0.3,1) both 0.78s; }
.hero__stat      { animation: heroIn 0.55s cubic-bezier(0.16,1,0.3,1) both; }
.hero__stat:nth-child(1) { animation-delay: 0.9s;  }
.hero__stat:nth-child(2) { animation-delay: 0.98s; }
.hero__stat:nth-child(3) { animation-delay: 1.06s; }

.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255,255,255,0.35);
  font-size: var(--fs-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scroll-line 2.2s ease-in-out infinite;
}
@keyframes scroll-line {
  0%   { height: 0; opacity: 0; }
  40%  { height: 48px; opacity: 1; }
  100% { height: 48px; opacity: 0; }
}

/* ── 9. About Split ───────────────────────────────────────────────────────── */
.about { background: var(--clr-white); }

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-20);
  align-items: center;
}

.about__media {
  position: relative;
}
.about__img-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--clr-light);
}
.about__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.about__accent-block {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 140px;
  height: 140px;
  background: var(--clr-primary);
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0.12;
}
.about__stat-callout {
  position: absolute;
  bottom: var(--space-6);
  left: -var(--space-8);
  background: var(--clr-white);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--clr-primary);
}
.about__callout-num {
  font-family: var(--ff-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-primary);
  line-height: 1;
}
.about__callout-label {
  font-size: var(--fs-xs);
  color: var(--clr-muted);
  margin-top: var(--space-1);
}

.about__body { display: flex; flex-direction: column; gap: var(--space-6); }

.about__bullets { display: flex; flex-direction: column; gap: var(--space-3); }
.about__bullet {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--clr-mid);
}
.about__bullet-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(140,32,39,0.08);
  display: grid;
  place-items: center;
  margin-top: 1px;
}
.about__bullet-icon svg {
  width: 10px;
  height: 10px;
  stroke: var(--clr-primary);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
}

/* ── 10. Action Bar ───────────────────────────────────────────────────────── */
.action-bar {
  background: var(--clr-primary);
  padding-block: 0;
}
.action-bar__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}
.action-bar__item {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-8) var(--space-8);
  border-right: 1px solid rgba(255,255,255,0.15);
  cursor: pointer;
  transition: background var(--transition);
  text-decoration: none;
  color: var(--clr-white);
}
.action-bar__item:last-child { border-right: none; }
.action-bar__item:hover { background: var(--clr-primary-dk); }

.action-bar__icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
}
.action-bar__label {
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.action-bar__sub {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.6);
  margin-top: var(--space-1);
}
.action-bar__arrow {
  font-size: 1.1rem;
  opacity: 0.5;
  transition: transform var(--transition), opacity var(--transition);
}
.action-bar__item:hover .action-bar__arrow {
  transform: translateX(4px);
  opacity: 1;
}

/* ── 11. Research Programmes ──────────────────────────────────────────────── */
.programmes { background: var(--clr-white); }

.programmes__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-20);
  align-items: start;
}

.programmes__media {
  position: sticky;
  top: 100px;
}
.programmes__featured-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3/4;
  background: var(--clr-light);
  position: relative;
}
.programmes__featured-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(140,32,39,0.28) 0%, rgba(20,8,8,0.18) 60%, rgba(0,0,0,0.08) 100%);
  z-index: 1;
  pointer-events: none;
  border-radius: var(--radius-lg);
}
.programmes__featured-img-inner {
  width: 100%;
  height: 100%;
  background: linear-gradient(160deg, var(--clr-primary-dk) 0%, var(--clr-primary) 60%, var(--clr-gold) 100%);
}
.programmes__featured-img-inner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: opacity 0.2s ease;
}
.programmes__overlay-text {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 4rem var(--space-8) var(--space-8);
  background: linear-gradient(to top, rgba(0,0,0,0.92) 0%, rgba(0,0,0,0.72) 40%, rgba(0,0,0,0.3) 70%, transparent 100%);
  color: var(--clr-white);
  transition: opacity 0.3s ease;
  z-index: 2;
}
.programmes__overlay-label {
  font-size: var(--fs-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-gold-lt);
  margin-bottom: var(--space-2);
  text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}
.programmes__overlay-title {
  font-family: var(--ff-serif);
  font-size: var(--fs-xl);
  font-weight: 700;
  text-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

.programmes__list { display: flex; flex-direction: column; }

.prog-item {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: var(--space-6);
  padding: var(--space-8) var(--space-6);
  border-bottom: 1px solid var(--clr-border);
  border-left: 3px solid transparent;
  cursor: pointer;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: background var(--transition), border-color var(--transition);
}
.prog-item:last-child { border-bottom: none; }
.prog-item.is-active {
  background: rgba(140,32,39,0.05);
  border-left-color: var(--clr-primary);
}

.prog-item__num {
  font-family: var(--ff-serif);
  font-size: 3.5rem;
  font-weight: 700;
  color: rgba(140,32,39,0.1);
  line-height: 1;
  align-self: start;
  padding-top: var(--space-2);
  transition: color var(--transition);
}
.prog-item.is-active .prog-item__num { color: var(--clr-primary); }

.prog-item__meta { display: flex; flex-direction: column; gap: var(--space-2); }

.prog-item__tag {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-gold);
}
.prog-item__title {
  font-family: var(--ff-serif);
  font-size: var(--fs-xl);
  font-weight: 700;
  color: var(--clr-dark);
  line-height: 1.25;
  transition: color var(--transition);
}
.prog-item.is-active .prog-item__title { color: var(--clr-primary); }

.prog-item__desc {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.65;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.55s cubic-bezier(0.4,0,0.2,1), opacity 0.35s ease;
  opacity: 0;
}
.prog-item.is-active .prog-item__desc {
  max-height: 600px;
  opacity: 1;
}

.prog-item__footer {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-3);
  flex-wrap: wrap;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.5s ease;
}
.prog-item.is-active .prog-item__footer { max-height: 160px; }

.prog-item__milestones {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s ease, opacity 0.4s ease;
  margin-top: var(--space-4);
}
.prog-item.is-active .prog-item__milestones {
  max-height: 300px;
  opacity: 1;
}
.prog-item__milestones-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: var(--space-3);
}
.prog-item__milestones-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: 0;
  margin: 0;
  counter-reset: milestone;
}
.prog-item__milestones-list li {
  counter-increment: milestone;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--fs-xs);
  color: var(--clr-muted);
  line-height: 1.5;
}
.prog-item__milestones-list li::before {
  content: counter(milestone);
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--clr-primary);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.prog-item__pill {
  padding: 0.25rem 0.75rem;
  background: var(--clr-light);
  border-radius: 100px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--clr-mid);
}
.prog-item__pill--primary {
  background: rgba(140,32,39,0.08);
  color: var(--clr-primary);
}

/* ── 12. Explore Specialisations ──────────────────────────────────────────── */
.explore {
  position: relative;
  overflow: hidden;
  background: var(--clr-dark);
  min-height: 600px;
  display: flex;
  align-items: center;
}
.explore__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(28,28,36,0.98) 0%, rgba(140,32,39,0.85) 100%);
  /* Add background image behind this for depth:
     background-image: url('../images/research-bg.jpg');
     background-blend-mode: multiply; */
}
.explore__content {
  position: relative;
  z-index: 1;
}
.explore__grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-20);
  align-items: center;
}
.explore__left .t-heading { color: var(--clr-white); }
.explore__left p {
  color: rgba(255,255,255,0.6);
  font-size: var(--fs-base);
  line-height: 1.75;
  margin-top: var(--space-4);
  margin-bottom: var(--space-8);
}
.explore__right { display: flex; flex-direction: column; gap: var(--space-8); }

/* ── Specialisation pills ── */
.spec-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.6rem;
}
.spec-pill {
  padding: 0.38rem 0.9rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 2rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.82);
  line-height: 1.4;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.spec-pill:hover {
  background: rgba(204,122,26,0.18);
  border-color: var(--clr-gold);
  color: var(--clr-gold);
}
.spec-pill--accent {
  background: rgba(204,122,26,0.12);
  border-color: rgba(204,122,26,0.4);
  color: var(--clr-gold-lt);
}

/* ── Career pathways ── */
.career-paths {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-6);
}
.career-paths__title {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-gold);
  margin-bottom: var(--space-4);
}
.career-paths__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}
.career-path {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.career-path__label {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--clr-white);
}
.career-path__desc {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.55);
  line-height: 1.5;
}

/* ── Legacy tile styles (removed from HTML, kept in case) ── */
.explore__spec-tile {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
  padding: 1.6rem 1.5rem;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  background: rgba(255,255,255,0.04);
  position: relative;
  overflow: hidden;
}
.explore__spec-tile::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(140,32,39,0.22), rgba(204,122,26,0.1));
  opacity: 0;
  transition: opacity var(--transition);
}
.explore__spec-tile:hover {
  border-color: rgba(204,122,26,0.5);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}
.explore__spec-tile:hover::before { opacity: 1; }

.explore__spec-tile-icon {
  width: 32px;
  height: 32px;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}
.explore__spec-tile-icon svg {
  width: 100%;
  height: 100%;
}
.explore__spec-tile-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: rgba(255,255,255,0.82);
  line-height: 1.35;
  position: relative;
  z-index: 1;
  transition: color var(--transition);
}
.explore__spec-tile:hover .explore__spec-tile-label { color: var(--clr-white); }

/* Legacy list item styles — unused but kept in case needed */
.explore__spec-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  color: rgba(255,255,255,0.75);
  font-size: var(--fs-sm);
  font-weight: 500;
}
.explore__spec-arrow {
  color: var(--clr-primary);
  opacity: 0;
  transition: opacity var(--transition);
}

/* ── 13. Why ISBR ─────────────────────────────────────────────────────────── */
.why { background: var(--clr-cream); }

.why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}
.why__grid--3col { grid-template-columns: repeat(3, 1fr); }
.elig-grid { grid-template-columns: repeat(3, 1fr); }
.why__card {
  background: var(--clr-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  border: 1px solid var(--clr-border);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}
.why__card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(to right, var(--clr-primary), var(--clr-gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.why__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(140,32,39,0.15);
}
.why__card:hover::before { transform: scaleX(1); }
.why__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(140,32,39,0.07);
  display: grid;
  place-items: center;
  margin-bottom: var(--space-5);
  padding: 12px;
}
.why__icon svg {
  width: 100%;
  height: 100%;
}
.why__card-title {
  font-family: var(--ff-serif);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: var(--space-3);
}
.why__card-desc {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.7;
}

/* ── 14. Stats Strip ──────────────────────────────────────────────────────── */
.stats-strip {
  background: var(--clr-primary);
  padding-block: var(--space-16);
}
.stats-strip__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  text-align: center;
}
.stats-strip__num {
  font-family: var(--ff-serif);
  font-size: var(--fs-4xl);
  font-weight: 700;
  color: var(--clr-white);
  line-height: 1;
}
.stats-strip__label {
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: var(--space-2);
}
.stats-strip__divider {
  width: 1px;
  background: rgba(255,255,255,0.15);
  align-self: center;
  height: 60px;
  display: none;
}

/* ── 15. Scholar Stories — Video Testimonial Carousel ────────────────────── */
.scholars { background: var(--clr-white); }

.vid-carousel-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-12);
}
.vid-viewport {
  flex: 1;
  overflow: hidden;
}
.vid-track {
  display: flex;
  transition: transform 0.45s cubic-bezier(0.16,1,0.3,1);
  will-change: transform;
}
.vid-slide {
  flex: 0 0 50%;
  padding: 0 var(--space-3);
  text-decoration: none;
  color: inherit;
  display: block;
}
.vid-slide__thumb-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--clr-dark);
}
.vid-slide__thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease, opacity 0.4s ease;
}
.vid-slide:hover .vid-slide__thumb {
  transform: scale(1.04);
  opacity: 0.75;
}
.vid-slide__play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.vid-slide__play-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255,255,255,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s ease, background 0.3s ease;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}
.vid-slide:hover .vid-slide__play-btn {
  transform: scale(1.14);
  background: var(--clr-primary);
}
.vid-slide__play-btn svg {
  width: 22px;
  height: 22px;
  fill: var(--clr-primary);
  margin-left: 3px;
  transition: fill 0.3s ease;
}
.vid-slide:hover .vid-slide__play-btn svg { fill: #fff; }
.vid-slide__title {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-dark);
  margin-top: var(--space-4);
  line-height: 1.5;
}
.vid-btn {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1.5px solid var(--clr-border);
  background: var(--clr-white);
  color: var(--clr-dark);
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.vid-btn:hover:not(:disabled) {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: var(--clr-white);
}
.vid-btn:disabled { opacity: 0.28; cursor: not-allowed; }
.vid-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
}
.vid-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: none;
  background: var(--clr-border);
  padding: 0;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.vid-dot.is-active {
  background: var(--clr-primary);
  transform: scale(1.4);
}
@media (max-width: 767px) {
  .vid-slide { flex: 0 0 100%; }
}

/* ── 16. Enquiry Form ─────────────────────────────────────────────────────── */
.enquiry { background: var(--clr-cream); }

.enquiry__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.enquiry__left {
  background: linear-gradient(160deg, var(--clr-primary-dk) 0%, var(--clr-primary) 100%);
  padding: var(--space-16) var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  color: var(--clr-white);
}
.enquiry__left .t-heading { color: var(--clr-white); }
.enquiry__left .t-body { color: rgba(255,255,255,0.65); }

.enquiry__info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-top: var(--space-7);
  margin-bottom: var(--space-7);
}
.enquiry__info-tile {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
}
.enquiry__info-tile-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clr-gold-lt);
  margin-bottom: var(--space-1);
}
.enquiry__info-tile-val {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-white);
  line-height: 1.4;
}

.enquiry__contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-10);
  margin-top: 0;
}
.enquiry__contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}
.enquiry__contact-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  display: grid;
  place-items: center;
  flex-shrink: 0;
  font-size: 1rem;
}
.enquiry__contact-label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: var(--space-3);
}
.enquiry__contact-val {
  font-size: var(--fs-sm);
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
}
.enquiry__contact-val a {
  color: var(--clr-gold-lt);
  transition: color var(--transition);
}
.enquiry__contact-val a:hover { color: var(--clr-white); }

.enquiry__right {
  background: var(--clr-white);
  padding: var(--space-12) var(--space-6);
  overflow-x: hidden;
}

.enquiry__form-title {
  font-family: var(--ff-serif);
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: var(--space-2);
}
.enquiry__form-sub {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  margin-bottom: var(--space-8);
}

/* HubSpot embed — fill the panel width */
.hs-form-frame {
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  display: block;
}
.hs-form-frame iframe {
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  display: block;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.form__group {
  margin-bottom: var(--space-4);
}
.form__group label {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-mid);
  margin-bottom: var(--space-2);
}
.form__group input,
.form__group select,
.form__group textarea {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  color: var(--clr-dark);
  background: #FAFAFA;
  transition: border-color var(--transition), background var(--transition);
}
.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus {
  border-color: var(--clr-primary);
  background: var(--clr-white);
  box-shadow: 0 0 0 3px rgba(140,32,39,0.08);
}
.form__group textarea { resize: none; height: 88px; }
.form__group select { cursor: pointer; }

.form__submit {
  width: 100%;
  padding: 0.85rem 1.5rem;
  background: var(--clr-primary);
  color: var(--clr-white);
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.02em;
  margin-top: var(--space-2);
}
.form__submit:hover {
  background: var(--clr-primary-dk);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(140,32,39,0.3);
}
.form__note {
  font-size: var(--fs-xs);
  color: var(--clr-muted);
  margin-top: var(--space-3);
  line-height: 1.6;
  text-align: center;
}

/* ── 17. Accreditation Carousel ───────────────────────────────────────────── */
.accreditation {
  background: var(--clr-white);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  padding-block: var(--space-10);
}
.accreditation__label {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-muted);
  margin-bottom: var(--space-8);
  text-align: center;
}
.accr-carousel-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.accr-viewport {
  flex: 1;
  overflow: hidden;
}
.accr-track {
  display: flex;
  transition: transform 0.45s cubic-bezier(0.16,1,0.3,1);
  will-change: transform;
}
.accr-slide {
  flex: 0 0 calc(100% / 3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-6) var(--space-8);
  min-height: 130px;
}
.accr-slide img {
  height: 64px;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  filter: grayscale(1) opacity(0.6);
  transition: filter 0.3s ease;
  display: block;
}
.accr-slide:hover img {
  filter: grayscale(0) opacity(1);
}
.accr-slide__name {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--clr-muted);
  text-align: center;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.accr-btn {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1.5px solid var(--clr-border);
  background: var(--clr-white);
  color: var(--clr-primary);
  font-size: 1rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
  line-height: 1;
}
.accr-btn:hover:not(:disabled) {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: var(--clr-white);
}
.accr-btn:disabled {
  opacity: 0.28;
  cursor: not-allowed;
}
.accr-dots {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-6);
}
.accr-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: none;
  background: var(--clr-border);
  cursor: pointer;
  padding: 0;
  transition: background var(--transition), transform var(--transition);
}
.accr-dot.is-active {
  background: var(--clr-primary);
  transform: scale(1.4);
}
@media (max-width: 767px) {
  .accr-slide { flex: 0 0 100%; }
}

/* ── 20. Footer ───────────────────────────────────────────────────────────── */
.footer {
  background: var(--clr-white);
  color: var(--clr-dark);
  border-top: 3px solid var(--clr-primary);
}

.footer__main {
  padding-block: var(--space-20);
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: var(--space-12);
}

.footer__brand-logo img {
  height: 80px;
  width: auto;
  background: none;
  border-radius: 0;
  padding: 0;
  margin-bottom: var(--space-5);
}
.footer__brand-desc {
  font-size: var(--fs-sm);
  color: rgba(0,0,0,0.5);
  line-height: 1.8;
  margin-bottom: var(--space-6);
}
.footer__social {
  display: flex;
  gap: var(--space-3);
}
.footer__social a {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(0,0,0,0.05);
  border: 1px solid rgba(0,0,0,0.1);
  display: grid;
  place-items: center;
  transition: all var(--transition);
}
.footer__social a:hover {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
}
.footer__social svg {
  width: 15px;
  height: 15px;
  fill: rgba(0,0,0,0.5);
}
.footer__social a:hover svg { fill: var(--clr-white); }

.footer__col-title {
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-primary);
  margin-bottom: var(--space-8);
}
.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer__links a {
  font-size: var(--fs-sm);
  color: rgba(0,0,0,0.72);
  transition: color var(--transition);
  line-height: 1.4;
}
.footer__links a:hover { color: var(--clr-primary); }

.footer__contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.footer__contact-item {
  font-size: var(--fs-sm);
  color: rgba(0,0,0,0.5);
  line-height: 1.6;
}
.footer__contact-item strong {
  display: block;
  color: var(--clr-dark);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.footer__contact-item a {
  color: var(--clr-primary);
  transition: color var(--transition);
}
.footer__contact-item a:hover { color: var(--clr-primary-dk); }

.footer__bottom {
  border-top: 1px solid rgba(0,0,0,0.08);
  padding-block: var(--space-5);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.footer__copy {
  font-size: var(--fs-xs);
  color: rgba(0,0,0,0.65);
}
.footer__accred-tags {
  display: flex;
  gap: var(--space-3);
}
.footer__accred-tag {
  font-size: var(--fs-xs);
  color: rgba(0,0,0,0.4);
  padding: 0.25rem 0.65rem;
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 2px;
}

/* ── 21. Floating Elements ────────────────────────────────────────────────── */
.fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 500;
  width: 52px;
  height: 52px;
  background: var(--clr-primary);
  color: var(--clr-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: grid;
  place-items: center;
  box-shadow: 0 6px 20px rgba(140,32,39,0.45);
  transition: var(--transition);
  font-size: 1.1rem;
}
.fab:hover { transform: scale(1.1); background: var(--clr-primary-dk); }

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--clr-dark);
  color: var(--clr-white);
  padding: 0.8rem 1.75rem;
  border-radius: 100px;
  font-size: var(--fs-sm);
  font-weight: 600;
  z-index: 999;
  box-shadow: var(--shadow-xl);
  border-left: 4px solid var(--clr-primary);
  white-space: nowrap;
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}
.toast.is-visible {
  transform: translateX(-50%) translateY(0);
}

/* ── 22. Scroll Animation Classes (IntersectionObserver — no GSAP) ─────────── */
.anim-fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.72s cubic-bezier(0.16,1,0.3,1),
              transform 0.72s cubic-bezier(0.16,1,0.3,1);
  transition-delay: calc(var(--anim-order, 0) * 90ms);
}
.anim-fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.anim-fade-in {
  opacity: 0;
  transition: opacity 0.7s ease;
  transition-delay: calc(var(--anim-order, 0) * 70ms);
}
.anim-fade-in.is-visible {
  opacity: 1;
}

.anim-scale-in {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.85s ease,
              transform 0.85s cubic-bezier(0.16,1,0.3,1);
}
.anim-scale-in.is-visible {
  opacity: 1;
  transform: scale(1);
}

.anim-slide-left {
  opacity: 0;
  transform: translateX(-32px);
  transition: opacity 0.75s ease,
              transform 0.75s cubic-bezier(0.16,1,0.3,1);
  transition-delay: calc(var(--anim-order, 0) * 100ms);
}
.anim-slide-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.anim-slide-right {
  opacity: 0;
  transform: translateX(32px);
  transition: opacity 0.75s ease,
              transform 0.75s cubic-bezier(0.16,1,0.3,1);
}
.anim-slide-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

/* ── 23. Mobile Navigation Drawer ────────────────────────────────────────── */
.mobile-nav {
  position: fixed;
  inset: 0;
  z-index: 900;
  pointer-events: none;
}
.mobile-nav__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(28,28,36,0.7);
  opacity: 0;
  transition: opacity 0.35s ease;
  backdrop-filter: blur(4px);
}
.mobile-nav__drawer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 85vw);
  background: var(--clr-white);
  transform: translateX(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  padding: var(--space-8);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.mobile-nav.is-open { pointer-events: all; }
.mobile-nav.is-open .mobile-nav__backdrop { opacity: 1; }
.mobile-nav.is-open .mobile-nav__drawer { transform: translateX(0); }
.mobile-nav__close {
  align-self: flex-end;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--clr-mid);
  padding: var(--space-2);
}
.mobile-nav__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-nav__links a {
  display: block;
  padding: var(--space-3) var(--space-2);
  font-size: var(--fs-md);
  font-weight: 500;
  color: var(--clr-dark);
  border-bottom: 1px solid var(--clr-border);
  transition: color var(--transition);
}
.mobile-nav__links a:hover { color: var(--clr-primary); }

/* ── 24. Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
  .why__grid { grid-template-columns: repeat(2, 1fr); }
  .why__grid--3col { grid-template-columns: repeat(2, 1fr); }
  .footer__main { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
}

@media (max-width: 900px) {
  :root { --fs-hero: clamp(2.5rem, 8vw, 4rem); }
  .navbar__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .navbar__nav-left,
  .navbar__nav-right { display: none; }
  .navbar__burger { display: flex; }
  .about__grid { grid-template-columns: 1fr; gap: var(--space-12); }
  .about__media { order: -1; }
  .programmes__grid { grid-template-columns: 1fr; }
  .programmes__media { display: none; }
  .explore__grid { grid-template-columns: 1fr; gap: var(--space-10); }
  .enquiry__grid { grid-template-columns: 1fr; }
  .enquiry__left { order: 1; }
  .enquiry__right { order: 0; }
  .events__grid { grid-template-columns: repeat(2, 1fr); }
  .action-bar__grid { grid-template-columns: 1fr; }
  .action-bar__item {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.15);
    justify-content: flex-start;
  }
  .action-bar__item:last-child { border-bottom: none; }
  .action-bar__arrow { margin-left: auto; }
  .stats-strip__grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-12); }
}

@media (max-width: 640px) {
  :root { --fs-3xl: 1.75rem; }
  .topbar__links .topbar__link--hide { display: none; }
  .section { padding-block: var(--space-16); overflow-x: clip; }
  .form__row { grid-template-columns: 1fr; }
  .hero__stats { gap: var(--space-8); }
  .footer__main { grid-template-columns: 1fr; }
  /* Prevent any section from causing horizontal scroll */
  section, aside, .stats-strip, .action-bar, .accreditation { overflow-x: clip; }

  /* Enquiry form — minimal horizontal padding on mobile */
  .enquiry__right { padding: var(--space-8) var(--space-4); }
  .career-paths__grid { grid-template-columns: 1fr; gap: var(--space-3); }

  /* Research Programmes — compact mobile layout */
  .prog-item {
    grid-template-columns: 1fr;
    gap: var(--space-2);
    padding: var(--space-6) var(--space-4);
  }
  .prog-item__num {
    font-size: 1.5rem;
    line-height: 1;
    padding-top: 0;
    color: var(--clr-muted);
  }
  .prog-item.is-active .prog-item__num { color: var(--clr-primary); }
  .prog-item__footer { flex-wrap: wrap; gap: var(--space-2); }
}

@media (max-width: 480px) {
  :root { --container-pad: 1rem; }
  .hero__actions { flex-direction: column; align-items: flex-start; }
  .hero__programmes { gap: var(--space-2); }
  .why__grid { grid-template-columns: 1fr; }
  .elig-grid  { grid-template-columns: 1fr; }
  .stats-strip__grid { grid-template-columns: 1fr 1fr; }
  .btn { white-space: normal; text-align: center; max-width: 100%; }
}