/* ==========================================================================
   Institute landing pages (/campus/{slug}) and the campus chooser.
   Self-contained: no Bootstrap. Every colour that belongs to the institute
   comes from --accent (its landing accent) and --shade (how dark the photo
   overlay is), both set on <body> by the page.
   ========================================================================== */

:root {
  --ink: #f5f7ff;
  --ink-soft: rgba(245, 247, 255, 0.82);
  --ink-dim: rgba(245, 247, 255, 0.62);
  --void: #070a14;
  --glass: rgba(255, 255, 255, 0.1);
  --glass-strong: rgba(255, 255, 255, 0.16);
  --glass-line: rgba(255, 255, 255, 0.2);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body.site {
  margin: 0;
  min-height: 100vh;
  background: var(--void);
  color: var(--ink);
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* ── Background slideshow ─────────────────────────────────────────────── */

.site-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  background: var(--void);
}

.site-slide {
  position: absolute;
  inset: -2%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transform: scale(1.06);
  transition: opacity 1.6s ease;
  will-change: opacity, transform;
}

.site-slide.is-active {
  opacity: 1;
  animation: site-kenburns var(--kb, 9000ms) var(--ease-out) both;
}

@keyframes site-kenburns {
  from { transform: scale(1.14) translate3d(1.2%, 0.8%, 0); }
  to   { transform: scale(1.02) translate3d(0, 0, 0); }
}

/* No slides yet: a slow, quiet gradient in the institute's accent. */
.site-bg.is-empty {
  background:
    radial-gradient(60% 70% at 15% 20%, color-mix(in srgb, var(--accent) 55%, transparent), transparent 70%),
    radial-gradient(50% 60% at 85% 75%, color-mix(in srgb, var(--accent) 35%, #7c3aed 30%), transparent 70%),
    linear-gradient(135deg, #0a0f22, #121a36 55%, #0a0f1f);
  background-size: 140% 140%, 140% 140%, 100% 100%;
  animation: site-drift 18s ease-in-out infinite alternate;
}

@keyframes site-drift {
  from { background-position: 0% 0%, 100% 100%, 0 0; }
  to   { background-position: 30% 20%, 70% 60%, 0 0; }
}

.site-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 8, 18, calc(var(--shade, 0.55) + 0.15)) 0%, rgba(5, 8, 18, calc(var(--shade, 0.55) * 0.5)) 62%, rgba(5, 8, 18, calc(var(--shade, 0.55) * 0.35)) 100%),
    linear-gradient(180deg, rgba(5, 8, 18, 0.35) 0%, transparent 28%, transparent 62%, rgba(5, 8, 18, 0.75) 100%);
}

.site-bg.is-empty .site-shade { background: linear-gradient(180deg, transparent 60%, rgba(5, 8, 18, 0.6)); }

/* ── Shell ────────────────────────────────────────────────────────────── */

.site-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-height: 100vh;
  min-height: 100svh;
  padding: clamp(16px, 3vw, 34px) clamp(18px, 5vw, 64px) clamp(14px, 2.4vw, 28px);
}

.site-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  animation: site-rise 0.9s var(--ease-out) both;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  text-decoration: none;
}

.site-logo {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 50px;
  height: 50px;
  padding: 6px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.6);
}

.site-logo img { max-width: 100%; max-height: 100%; object-fit: contain; }

.site-brand-text { display: grid; min-width: 0; }

.site-brand-text strong {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-brand-text small { font-size: 0.78rem; color: var(--ink-dim); }

.site-top-links { display: flex; align-items: center; gap: 10px; }

.site-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
}

.site-link:hover { color: #fff; }
.site-link.is-small { font-size: 0.82rem; }

/* ── Buttons ──────────────────────────────────────────────────────────── */

.site-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: 999px;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.3s var(--ease-spring), box-shadow 0.3s ease, background 0.2s ease, border-color 0.2s ease;
}

.site-btn i { transition: transform 0.3s var(--ease-spring); }
.site-btn:hover { transform: translateY(-2px); }
.site-btn:hover .bi-arrow-right { transform: translateX(4px); }
.site-btn:active { transform: scale(0.97); }

.site-btn.is-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 16px 40px -14px color-mix(in srgb, var(--accent) 80%, transparent);
}

.site-btn.is-primary:hover { box-shadow: 0 20px 46px -12px color-mix(in srgb, var(--accent) 90%, transparent); }

.site-btn.is-glass,
.site-btn.is-ghost {
  background: var(--glass);
  border-color: var(--glass-line);
  color: #fff;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-btn.is-glass:hover,
.site-btn.is-ghost:hover { background: var(--glass-strong); }
.site-btn.is-ghost { min-height: 42px; padding: 0 18px; font-size: 0.86rem; }
.site-btn.is-small { min-height: 40px; padding: 0 16px; font-size: 0.84rem; }

.site-btn:focus-visible,
.site-link:focus-visible,
.site-roles a:focus-visible,
.site-dots button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 70%, #fff);
  outline-offset: 3px;
}

/* ── Hero ─────────────────────────────────────────────────────────────── */

.site-hero {
  display: flex;
  align-items: center;
  padding: clamp(12px, 3.5vh, 56px) 0;
}

/* The about card beside the headline, on screens wide enough for both. */
.site-hero.has-info {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 390px);
  align-items: center;
  gap: clamp(28px, 5vw, 80px);
}

.site-copy { max-width: 720px; }
.site-copy.is-center { margin: 0 auto; text-align: center; }
.site-copy > * { animation: site-rise 1s var(--ease-out) both; }
.site-copy > *:nth-child(2) { animation-delay: 0.08s; }
.site-copy > *:nth-child(3) { animation-delay: 0.16s; }
.site-copy > *:nth-child(4) { animation-delay: 0.24s; }
.site-copy > *:nth-child(5) { animation-delay: 0.32s; }

.site-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 clamp(10px, 2.2vh, 18px);
  padding: 7px 14px 7px 10px;
  border: 1px solid var(--glass-line);
  border-radius: 999px;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 30%, transparent);
}

.site-copy h1 {
  margin: 0;
  font-size: clamp(2.1rem, min(6.2vw, 8.4vh), 4.7rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.035em;
  text-shadow: 0 6px 40px rgba(0, 0, 0, 0.35);
  text-wrap: balance;
}

.site-sub {
  max-width: 560px;
  margin: clamp(10px, 2.2vh, 18px) 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.6vw, 1.18rem);
  line-height: 1.6;
}

.site-copy.is-center .site-sub { margin-left: auto; margin-right: auto; }

.site-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(16px, 3.4vh, 30px);
}

/* Narrow screens only - wide ones show the same details in the card. */
.site-about-open { display: none; }

.site-roles {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: clamp(14px, 3vh, 26px);
}

.site-roles > span {
  margin-right: 4px;
  color: var(--ink-dim);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-roles a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid var(--glass-line);
  border-radius: 999px;
  background: rgba(10, 14, 28, 0.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.3s var(--ease-spring);
}

.site-roles a:hover {
  border-color: color-mix(in srgb, var(--accent) 70%, #fff);
  background: color-mix(in srgb, var(--accent) 35%, transparent);
  transform: translateY(-2px);
}

/* ── Footer: caption, dots, copyright ─────────────────────────────────── */

.site-foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: end;
  gap: 16px;
}

.site-foot.is-plain { display: flex; justify-content: center; }

.site-caption {
  display: grid;
  gap: 2px;
  justify-self: start;
  max-width: 420px;
  min-height: 1px;
  transition: opacity 0.4s ease;
}

.site-caption:empty { opacity: 0; }
.site-caption strong { font-size: 0.95rem; font-weight: 700; }
.site-caption span { color: var(--ink-dim); font-size: 0.82rem; }

.site-dots { display: flex; gap: 8px; justify-self: center; }

.site-dots button {
  position: relative;
  width: 34px;
  height: 6px;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
  cursor: pointer;
}

.site-dots button i {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: #fff;
  transform: scaleX(0);
  transform-origin: left;
}

.site-dots button.is-active i { animation: site-dot var(--interval, 6000ms) linear both; }

@keyframes site-dot { to { transform: scaleX(1); } }

.site-copyright { color: var(--ink-dim); font-size: 0.8rem; }
.site-foot .site-copyright { grid-column: 3; justify-self: end; margin: 0; text-align: right; }

/* ── About card ───────────────────────────────────────────────────────── */

.site-info {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: clamp(18px, 2.6vh, 26px);
  border: 1px solid var(--glass-line);
  border-radius: 24px;
  background: rgba(10, 14, 28, 0.52);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  box-shadow: 0 30px 60px -36px rgba(0, 0, 0, 0.9);
  animation: site-rise 1s var(--ease-out) 0.3s both;
}

.site-info h2 { margin: 0; font-size: 1.05rem; font-weight: 800; letter-spacing: -0.01em; }

.site-info-about {
  display: -webkit-box;
  margin: -4px 0 0;
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 0.9rem;
  line-height: 1.6;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
}

.site-info-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  justify-self: start;
  margin-top: -6px;
  color: #fff;
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
}

.site-info-more i { transition: transform 0.3s var(--ease-spring); }
.site-info-more:hover i { transform: translateX(4px); }

.site-contact { display: grid; gap: 8px; align-content: start; margin: 0; padding: 0; list-style: none; }

.site-contact li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
}

.site-contact i {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 28%, transparent);
  color: #fff;
  font-size: 0.9rem;
}

.site-contact a, .site-contact span { color: var(--ink-soft); font-size: 0.88rem; text-decoration: none; overflow-wrap: anywhere; }
.site-contact a:hover { color: #fff; }

/* ── About panel (from "About us" / "Read more") ───────────────────────── */

.site-sheet {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}

html:not(.js) .site-sheet:target,
.site-sheet.is-open {
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  transition: opacity 0.3s ease;
}

.site-sheet-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 6, 14, 0.62);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.site-sheet-panel {
  position: relative;
  width: min(560px, 100%);
  max-height: 86vh;
  max-height: 86svh;
  overflow: auto;
  padding: 28px;
  border: 1px solid var(--glass-line);
  border-radius: 26px;
  background: rgba(12, 16, 32, 0.94);
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.9);
  transform: translateY(16px) scale(0.98);
  transition: transform 0.45s var(--ease-out);
}

html:not(.js) .site-sheet:target .site-sheet-panel,
.site-sheet.is-open .site-sheet-panel { transform: none; }

.site-sheet h2 { margin: 0 48px 12px 0; font-size: 1.4rem; letter-spacing: -0.02em; }
.site-sheet-about { margin: 0 0 20px; color: var(--ink-soft); line-height: 1.7; }

.site-sheet-close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--glass-line);
  border-radius: 50%;
  background: var(--glass);
  text-decoration: none;
}

.site-sheet-close:hover { background: var(--glass-strong); }

.site-sheet-close:focus-visible,
.site-info-more:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 70%, #fff);
  outline-offset: 3px;
}

/* ── Campus chooser ───────────────────────────────────────────────────── */

.site-shell.is-scroll { grid-template-rows: auto auto auto; gap: clamp(20px, 4vh, 44px); }

.site-chooser { display: grid; gap: clamp(26px, 5vh, 46px); align-content: center; padding-top: clamp(10px, 4vh, 40px); }

.site-campuses {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
}

.site-campus {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 20px;
  border: 1px solid var(--glass-line);
  border-radius: 22px;
  background: rgba(12, 16, 32, 0.5);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  box-shadow: 0 20px 50px -30px rgba(0, 0, 0, 0.8);
  transition: transform 0.35s var(--ease-spring), border-color 0.25s ease, background 0.25s ease;
  animation: site-rise 0.9s var(--ease-out) both;
  animation-delay: var(--delay, 0ms);
}

.site-campus:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 70%, #fff);
  background: rgba(12, 16, 32, 0.62);
}

.site-campus::before {
  content: "";
  position: absolute;
  inset: 0 20px auto;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--accent);
}

.site-campus-cover { position: absolute; inset: 0; z-index: 0; border-radius: inherit; }
.site-campus > :not(.site-campus-cover) { position: relative; z-index: 1; pointer-events: none; }
.site-campus a:not(.site-campus-cover) { pointer-events: auto; }

.site-campus-head { display: flex; align-items: center; gap: 14px; }

.site-campus-logo {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 54px;
  height: 54px;
  padding: 6px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--accent);
  font-size: 1.4rem;
  font-weight: 800;
}

.site-campus-logo img { max-width: 100%; max-height: 100%; object-fit: contain; }
.site-campus h2 { margin: 0; font-size: 1.1rem; font-weight: 800; letter-spacing: -0.01em; }
.site-campus-head p { margin: 3px 0 0; color: var(--ink-dim); font-size: 0.84rem; }
.site-campus-tag { margin: 0; color: var(--ink-soft); font-size: 0.88rem; line-height: 1.5; }
.site-campus-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: auto; }

/* ── Motion & small screens ───────────────────────────────────────────── */

@keyframes site-rise {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: none; }
}

@media (max-width: 979px) {
  .site-hero.has-info { grid-template-columns: minmax(0, 1fr); }
  .site-info { display: none; }
  .site-about-open { display: inline-flex; }
}

/* Short screens (a laptop with a docked browser, a phone held sideways). */
@media (max-height: 640px) {
  .site-info-about { -webkit-line-clamp: 3; }
  .site-roles { margin-top: 12px; }
}

@media (max-width: 760px) {
  .site-top-links .site-link span,
  .site-top-links .site-btn span { display: none; }
  .site-btn.is-ghost { width: 42px; padding: 0; }
  .site-hero { align-items: flex-end; }
  .site-actions .site-btn { flex: 1 1 auto; }
  .site-foot { grid-template-columns: minmax(0, 1fr) auto; }
  .site-foot .site-copyright { display: none; }
  .site-logo { width: 44px; height: 44px; }
  .site-sheet { place-items: end stretch; padding: 0; }
  .site-sheet-panel {
    width: 100%;
    padding: 24px 20px calc(24px + env(safe-area-inset-bottom));
    border-radius: 26px 26px 0 0;
    transform: translateY(100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .site-slide, .site-slide.is-active, .site-bg.is-empty, .site-copy > *, .site-top,
  .site-campus, .site-info, .site-dots button.is-active i {
    animation: none !important;
    transition: opacity 0.4s ease;
  }
  .site-slide { transform: none; }
  .site-sheet-panel { transition: none; }
}

/* ── Enquiry form ─────────────────────────────────────────────────────── */

.site-enquiry { display: grid; gap: 12px; }
.site-enquiry label { display: grid; gap: 6px; color: var(--ink-soft); font-size: 0.85rem; font-weight: 600; }
.site-enquiry label span { color: var(--ink-dim); font-weight: 400; }
.site-enquiry input, .site-enquiry select, .site-enquiry textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--glass-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: #fff;
  font: inherit;
  font-size: 0.95rem;
}
.site-enquiry select option { color: #111; }
.site-enquiry input:focus, .site-enquiry select:focus, .site-enquiry textarea:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 70%, #fff);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 30%, transparent);
}
.site-enquiry .site-btn { justify-self: start; margin-top: 4px; }
.site-trap { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; overflow: hidden; }
.site-enquiry-note { margin: 0 0 14px; padding: 12px 14px; border-radius: 12px; font-size: 0.92rem; }
.site-enquiry-note.is-ok { background: color-mix(in srgb, #22c55e 22%, transparent); color: #dcfce7; }
.site-enquiry-note.is-err { background: color-mix(in srgb, #ef4444 22%, transparent); color: #fee2e2; }