/* Magic layer for the school wing. Light, playful, a little impossible. */

/* ---------- Hero: pearl aurora and glass letters ---------- */
.hero-aurora {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.4s ease;
  -webkit-mask-image: linear-gradient(#000 72%, transparent);
  mask-image: linear-gradient(#000 72%, transparent);
  pointer-events: none;
}
.hero-aurora.is-live { opacity: .92; }

.glyph-field {
  --px: 0;
  --py: 0;
  --door-x: 78;
  --door-y: 52;
  container-type: size;
  position: absolute;
  inset: 0;
  z-index: 3;
  perspective: 900px;
  pointer-events: none;
}
.glyph {
  position: absolute;
  left: calc(var(--gx) * 1%);
  top: calc(var(--gy) * 1%);
  font: 800 var(--s)/1 var(--narrow);
  transform-style: preserve-3d;
  animation:
    glyph-emerge 1.6s cubic-bezier(.2, .8, .2, 1) both,
    glyph-float var(--d, 9s) ease-in-out infinite alternate;
  animation-delay: calc(.5s + var(--i) * .16s), var(--delay, 0s);
}
.glyph__body {
  position: relative;
  display: block;
  transform-style: preserve-3d;
  transform: rotateX(calc(var(--py) * -24deg + var(--tilt-x, 8deg))) rotateY(calc(var(--px) * 30deg + var(--tilt-y, -12deg)));
  transition: transform .8s cubic-bezier(.2, .7, .2, 1);
}
.glyph__slice,
.glyph__face {
  position: absolute;
  left: 0;
  top: 0;
  transform: translateZ(var(--z));
}
.glyph__body > :first-child { position: relative; }
.glyph__slice { color: hsl(calc(262 - var(--shade) * 70) 38% calc(80% - var(--shade) * 24%)); }
.glyph__face {
  color: transparent;
  background: linear-gradient(135deg, #fff 8%, #e3d6fb 34%, #a9e0ea 62%, #fde6d2 88%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-stroke: 1px #ffffffd9;
  filter: drop-shadow(0 0 14px #ffffffb3);
}
.glyph::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  bottom: -18%;
  height: 14%;
  border-radius: 50%;
  background: #5a5f8a33;
  filter: blur(8px);
  transform: translateZ(-40px);
}
.glyph--1 { --i: 0; --gx: 64; --gy: 6; --s: clamp(70px, 8vw, 118px); --d: 8s; }
.glyph--2 { --i: 1; --gx: 88; --gy: 7; --s: clamp(54px, 6vw, 92px); --d: 10s; --delay: -3s; --tilt-y: 14deg; }
.glyph--3 { --i: 2; --gx: 90; --gy: 55; --s: clamp(74px, 8.5vw, 126px); --d: 11s; --delay: -6s; --tilt-y: 16deg; }
.glyph--4 { --i: 3; --gx: 62; --gy: 62; --s: clamp(64px, 7vw, 104px); --d: 9s; --delay: -2s; }
.glyph--5 { --i: 4; --gx: 76; --gy: 84; --s: clamp(46px, 5vw, 78px); --d: 12s; --delay: -8s; --tilt-x: -12deg; }
/* The letters leave door 04½ one by one: one impossible event, not five. */
@keyframes glyph-emerge {
  from {
    opacity: 0;
    translate: calc((var(--door-x) - var(--gx)) * 1cqw) calc((var(--door-y) - var(--gy)) * 1cqh);
    scale: .15;
    filter: blur(6px);
  }
  60% { opacity: 1; filter: none; }
  to { opacity: 1; translate: 0 0; scale: 1; }
}
@keyframes glyph-float {
  from { transform: translate3d(0, 0, 0) rotateZ(-3deg); }
  to { transform: translate3d(0, -18px, 0) rotateZ(4deg); }
}

/* ---------- Spell tapes crossing the page ---------- */
.spell-tape {
  position: relative;
  z-index: 3;
  height: clamp(118px, 13vw, 180px);
  margin: -24px 0;
  overflow: hidden;
  pointer-events: none;
}
.spell-tape__band {
  position: absolute;
  left: -6%;
  right: -6%;
  top: 50%;
  padding: 12px 0 11px;
  overflow: hidden;
  white-space: nowrap;
  box-shadow: 0 16px 30px -18px #12152466;
}
.spell-tape__band--a {
  background: var(--signal, #d7e56f);
  color: var(--ink);
  transform: translateY(-50%) rotate(-3.2deg);
}
.spell-tape__band--b {
  background: linear-gradient(90deg, #e3d6fb, #bfe6ee 30%, #fde6d2 62%, #e3d6fb);
  color: var(--ink);
  transform: translateY(-50%) rotate(2.6deg);
}
.spell-tape__track {
  display: inline-block;
  font: 800 clamp(20px, 2.4vw, 34px)/1 var(--narrow);
  letter-spacing: .02em;
  text-transform: uppercase;
  will-change: transform;
}

/* ---------- Formats: a bento of three companies, each with its own orbit ---------- */
.formats {
  max-width: calc(var(--hall, 1320px) + 2 * var(--gutter));
  margin: 0 auto;
  padding: var(--section-y, 96px) var(--gutter);
}
.formats__head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 16px 32px;
  margin-bottom: clamp(24px, 3vw, 40px);
}
.formats__head h2 {
  margin: 0;
  color: var(--ink);
  font: 800 var(--h2-size, 56px)/1 var(--sans);
  letter-spacing: -.05em;
}
.formats__head p { max-width: 34ch; margin: 0; color: #45464f; font-size: var(--lead-size, 17px); line-height: 1.55; }
.formats__grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  gap: 14px;
}
.format-tile {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-height: 380px;
  padding: 24px;
  overflow: hidden;
  border: 1px solid #c5a45f55;
  border-radius: 24px;
  background:
    radial-gradient(circle at 85% 10%, #bfe6ee66, transparent 45%),
    radial-gradient(circle at 10% 100%, #e3d6fb77, transparent 50%),
    #fffdf7;
  color: var(--ink);
  font: inherit;
  text-align: left;
  cursor: pointer;
  box-shadow: 0 24px 50px -40px #12152480;
  transition: transform .35s cubic-bezier(.2, .7, .2, 1), box-shadow .35s ease, border-color .35s ease;
}
.format-tile--pair { background: radial-gradient(circle at 80% 15%, #fde6d2aa, transparent 50%), radial-gradient(circle at 10% 100%, #bfe6ee77, transparent 50%), #fffdf7; }
.format-tile--group { background: radial-gradient(circle at 80% 15%, #dff0c8aa, transparent 50%), radial-gradient(circle at 10% 100%, #e3d6fb88, transparent 50%), #fffdf7; }
.format-tile:hover,
.format-tile:focus-visible {
  transform: translateY(-6px);
  border-color: #8f7fc0;
  box-shadow: 0 34px 60px -36px #5a5f8a99;
  outline: none;
}
.format-tile__tag {
  position: absolute;
  top: 18px;
  right: 18px;
  padding: 7px 12px 6px;
  border-radius: 999px;
  background: var(--signal, #d7e56f);
  font: 800 14px/1 var(--narrow);
  letter-spacing: .04em;
  text-transform: uppercase;
  transform: rotate(6deg);
  box-shadow: 2px 3px 0 #12152422;
}
.format-tile__name {
  margin-top: auto;
  font: 800 clamp(30px, 2.8vw, 42px)/1 var(--narrow);
  letter-spacing: -.03em;
}
.format-tile__text { margin-top: 8px; max-width: 30ch; color: #45464f; font-size: 15px; line-height: 1.5; }
.format-tile__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding: 11px 18px;
  border-radius: 999px;
  background: var(--night);
  color: var(--paper);
  font-size: 14px;
  font-weight: 700;
}
.format-tile__cta > span { transition: transform .25s ease; }
.format-tile:hover .format-tile__cta > span { transform: translateX(4px); }

.format-orbit {
  --rad: 58px;
  --dur: 9s;
  position: relative;
  align-self: center;
  width: 180px;
  height: 170px;
  margin: 6px 0 22px;
  perspective: 620px;
  transform-style: preserve-3d;
}
.format-orbit::before {
  content: "";
  position: absolute;
  inset: 22% 6%;
  border: 1px dashed #8f7fc077;
  border-radius: 50%;
  transform: rotateX(64deg);
}
.format-orbit i {
  --o: 44px;
  position: absolute;
  left: 50%;
  top: 50%;
  width: var(--o);
  height: var(--o);
  margin: calc(var(--o) / -2);
  border-radius: 50%;
  background: radial-gradient(circle at 32% 28%, #fff 0 9%, #efe6ff 22%, #b8e3ec 48%, #9b8cd0 78%, #5f6391);
  box-shadow: 0 18px 26px -14px #5a5f8a88, inset -6px -8px 14px #5a5f8a44;
  filter: hue-rotate(calc(var(--k, 0) * 220deg));
  animation: format-orbit var(--dur) linear infinite;
  animation-delay: calc(var(--dur) * var(--k, 0) * -1);
}
@keyframes format-orbit {
  from { transform: rotateX(64deg) rotateZ(0deg) translateX(var(--rad)) rotateZ(0deg) rotateX(-64deg); }
  to { transform: rotateX(64deg) rotateZ(360deg) translateX(var(--rad)) rotateZ(-360deg) rotateX(-64deg); }
}
.format-orbit--1 i { --o: 92px; animation: format-breathe 5s ease-in-out infinite alternate; }
.format-orbit--1::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 12px;
  margin: -6px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff, #e6cf97 45%, #b78a39);
  animation: format-orbit 6s linear infinite;
  --rad: 78px;
}
@keyframes format-breathe {
  from { transform: translateY(4px) scale(.97); }
  to { transform: translateY(-6px) scale(1.03); }
}
.format-orbit--2 { --rad: 44px; --dur: 7s; }
.format-orbit--2 i { --o: 54px; }
.format-orbit--2 i:nth-child(2) { --k: .5; }
.format-orbit--5 { --rad: 64px; --dur: 12s; }
.format-orbit--5 i { --o: 36px; }
.format-orbit--5 i:nth-child(2) { --k: .2; }
.format-orbit--5 i:nth-child(3) { --k: .4; }
.format-orbit--5 i:nth-child(4) { --k: .6; }
.format-orbit--5 i:nth-child(5) { --k: .8; }

/* ---------- Holographic cards ---------- */
[data-holo] { --rx: 0deg; --ry: 0deg; --hx: 50%; --hy: 50%; }
.language-wing .learning-document[data-holo] { position: relative; }
.holo-sheen {
  position: absolute;
  inset: 0;
  z-index: 6;
  border-radius: inherit;
  opacity: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at var(--hx) var(--hy), #ffffff66, transparent 32%),
    linear-gradient(115deg, transparent 18%, #ff9ad51f 32%, #8fe3ff26 46%, #d6ff9a1f 58%, #b9a6e826 70%, transparent 84%);
  background-size: 100% 100%, 260% 260%;
  background-position: center, var(--hx) var(--hy);
  transition: opacity .4s ease;
}
[data-holo].is-holo .holo-sheen { opacity: .85; }
.language-wing .language-detail[data-holo].is-holo,
.language-wing .learning-document[data-holo].is-holo,
.language-wing .admission-file[data-holo].is-holo {
  transform: perspective(1100px) rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform .2s ease-out;
}
.language-wing .platform-pass[data-holo].is-holo {
  transform: rotate(4deg) perspective(1100px) rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform .2s ease-out;
}


@media (max-width: 1000px) {
  .formats__grid { grid-template-columns: 1fr 1fr; }
  .format-tile--solo { grid-column: 1 / -1; min-height: 300px; }
}
@media (max-width: 760px) {
  .glyph--2,
  .glyph--5 { display: none; }
  .glyph-field { --door-x: 88; --door-y: 45; }
  .glyph--1 { --gx: 72; --gy: 3; --s: 58px; }
  .glyph--3 { --gx: 84; --gy: 30; --s: 62px; }
  .glyph--4 { --gx: 66; --gy: 20; --s: 44px; }
  .spell-tape { height: 104px; margin: -16px 0; }
  .spell-tape__track { font-size: 20px; }
  .formats__grid { grid-template-columns: 1fr; }
  .format-tile { min-height: 0; padding: 20px; border-radius: 20px; }
  .format-tile--solo { min-height: 0; }
  .format-orbit { width: 150px; height: 130px; margin-bottom: 10px; }
  .format-orbit--1 i { --o: 72px; }
}
@media (prefers-reduced-motion: reduce) {
  .glyph,
  .admission-stamp,
  .format-orbit i,
  .format-orbit--1::after { animation: none; }
  .format-tile,
  .format-tile__cta > span { transition: none; }
}
[data-holo].is-holo-out { transition: transform .5s cubic-bezier(.2, .7, .2, 1); }

/* ---------- Case-file numbering ---------- */
.section-no {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: #6b5a33;
  font: 700 12px/1 var(--sans);
  letter-spacing: .16em;
  text-transform: uppercase;
}
.section-no::before { content: ""; width: 28px; height: 1px; background: #b78a39; }
.language-wing .directory-bar .section-no { display: flex; justify-content: center; }
.language-wing .faculty > .section-no { display: flex; }
.formats__head .section-no { flex-basis: 100%; margin-bottom: 0; }

/* ---------- The admission stamp ---------- */
.language-wing .admission-file { position: relative; }
.admission-stamp {
  position: absolute;
  z-index: 4;
  top: 18px;
  right: clamp(78px, 9vw, 110px);
  padding: 10px 14px 8px;
  border: 3px double #7d1737;
  color: #7d1737;
  font: 800 clamp(12px, 1.1vw, 14px)/1.05 var(--narrow);
  letter-spacing: .14em;
  text-align: center;
  text-transform: uppercase;
  opacity: 0;
  transform: rotate(-12deg) scale(2.2);
  mix-blend-mode: multiply;
  pointer-events: none;
}
.admission-stamp.is-stamped { animation: stamp-land .5s cubic-bezier(.3, 1.6, .5, 1) forwards; }
@keyframes stamp-land {
  0% { opacity: 0; transform: rotate(-20deg) scale(2.2); }
  70% { opacity: .95; transform: rotate(-11deg) scale(.94); }
  100% { opacity: .88; transform: rotate(-12deg) scale(1); }
}

/* ---------- Formats as index cards in a card catalogue ---------- */
.format-tile,
.format-tile--pair,
.format-tile--group {
  border-radius: 2px;
  border-color: #c5a45f77;
  background-color: #fffdf7;
  background-image:
    linear-gradient(90deg, transparent 38px, #d9737366 38px 39px, transparent 39px),
    repeating-linear-gradient(180deg, transparent 0 27px, #80c9d840 27px 28px);
  background-position: 0 0, 0 230px;
  background-size: 100% 100%, 100% calc(100% - 230px);
  background-repeat: no-repeat;
}
.format-tile--pair { box-shadow: 0 24px 50px -40px #12152480, inset 0 3px 0 #fde6d2; }
.format-tile--group { box-shadow: 0 24px 50px -40px #12152480, inset 0 3px 0 #dff0c8; }
.format-tile--solo { box-shadow: 0 24px 50px -40px #12152480, inset 0 3px 0 #bfe6ee; }
.format-tile__name,
.format-tile__text,
.format-tile__cta { margin-left: 30px; }
.format-tile__tag {
  top: 16px;
  right: 16px;
  padding: 6px 10px 5px;
  border: 2px solid #7d1737;
  border-radius: 2px;
  background: transparent;
  box-shadow: none;
  color: #7d1737;
  font-size: 13px;
  transform: rotate(8deg);
  mix-blend-mode: multiply;
}
.format-tile__cta { border-radius: 2px; }

/* ---------- Goal marks are boxes on a form, ticked on hover ---------- */
.language-goal { border-radius: 2px; }
.language-goal::before {
  content: "";
  display: inline-block;
  width: 11px;
  height: 11px;
  margin: 0 9px -1px 0;
  border: 1.5px solid var(--lang-glow);
  border-radius: 1px;
  background: #fff;
  transition: background .2s ease, box-shadow .2s ease;
}
.language-goal:hover::before,
.language-goal:focus-visible::before {
  background: var(--lang-glow);
  box-shadow: inset 0 0 0 2px #fff;
}
.language-wing .lesson-flow__steps { counter-reset: flow; }
.language-wing .lesson-flow__steps span { border-radius: 2px; counter-increment: flow; }
.language-wing .lesson-flow__steps span::before { content: "0" counter(flow) " "; color: #0d5a45; font-weight: 800; }
.language-wing .pass-lines > span { border-radius: 2px; }

/* ---------- Language doors: arched doors of an old academy ---------- */
.gateway-lang-en { --door-light: #b0415f; --door-base: #7d1737; --door-dark: #4d0c20; --door-glow: #ff9ab8; }
.gateway-lang-pl { --door-glow: #8ff0cc; }
.gateway-lang-de { --door-glow: #b9b2ff; }
.gateway-lang-es { --door-glow: #ffd88a; }
.gateway-lang-uk { --door-glow: #ffb896; }
.language-wing .language-hall { --arch: 999px 999px 2px 2px; }

/* Stone surround with a gold hairline, arched at the top. */
.language-wing .language-hall .doorway {
  border: 10px solid #e8dcc0;
  border-radius: var(--arch);
  background: #1b1f2e;
  box-shadow: inset 0 0 0 1px #c9a55a, 0 0 0 1px #c9b98f, 0 18px 30px -18px #1215248c;
}
/* Keystone with the department number. */
.language-wing .language-hall .lintel {
  top: -16px;
  left: 50%;
  right: auto;
  bottom: auto;
  width: 84px;
  height: 30px;
  margin-left: -42px;
  justify-content: center;
  align-items: center;
  background: linear-gradient(180deg, #f3ead3, #d9caa5);
  clip-path: polygon(0 0, 100% 0, 84% 100%, 16% 100%);
  color: #6b5a33;
  font: 800 10px/1 var(--sans);
  letter-spacing: .1em;
  text-transform: uppercase;
  z-index: 9;
}
.language-wing .language-hall .lintel > span { transform: none; }

/* The leaf: flat enamel with a gold inlay that follows the arch. */
.language-wing .language-hall .door-leaf,
.language-wing .language-hall .door-front { border-radius: var(--arch); }
.language-wing .language-hall .door-front {
  background:
    radial-gradient(ellipse at 50% 18%, color-mix(in srgb, var(--door-glow, #fff) 22%, transparent), transparent 55%),
    linear-gradient(90deg, #0000002e, transparent 14% 86%, #00000038),
    var(--door-base, #7d1737);
  box-shadow: inset 0 0 0 9px var(--door-base, #7d1737), inset 0 0 0 10px #d9b96acc, inset 0 -40px 60px -30px #00000055;
}
.language-wing .language-hall .door-front::before {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  top: 58%;
  bottom: 9%;
  border: 1px solid #d9b96a88;
  border-radius: 1px;
  background: none;
  box-shadow: inset 0 0 0 4px #00000014;
  pointer-events: none;
}
.language-wing .language-hall .door-front::after { display: none; }

/* Fanlight: a half-round window with gold glazing bars, lit from the room. */
.language-wing .language-hall .door-window {
  position: absolute;
  inset: auto;
  top: 16px;
  left: 16px;
  right: 16px;
  width: auto;
  height: auto;
  aspect-ratio: 2 / 1;
  border: 2px solid #d9b96a;
  border-bottom-width: 3px;
  border-radius: 999px 999px 0 0;
  background:
    repeating-conic-gradient(from -90deg at 50% 100%, #d9b96a 0 1.4deg, transparent 1.4deg 22.5deg),
    radial-gradient(circle at 50% 100%, #fffdf5 0 14%, #d9b96a 14% 16%, transparent 16%),
    radial-gradient(circle at 50% 100%, color-mix(in srgb, var(--door-glow, #fff) 85%, #fff) 0, color-mix(in srgb, var(--door-glow, #fff) 45%, #1b1f2e) 70%, #1b1f2e 100%);
  box-shadow: 0 0 26px -2px color-mix(in srgb, var(--door-glow, #fff) 70%, transparent);
  transform: none;
  animation: room-light 4.5s ease-in-out infinite alternate;
}
.language-wing .language-hall .door-window::before,
.language-wing .language-hall .door-window::after,
.language-wing .language-hall .door-window > span { display: none; }
@keyframes room-light {
  from { filter: brightness(.95); }
  to { filter: brightness(1.12) saturate(1.1); }
}

/* The department name in gold leaf under the fanlight. */
.language-wing .language-hall .gateway-caption {
  top: 29%;
  left: 12%;
  right: 12%;
  justify-content: center;
  text-align: center;
  pointer-events: none;
}
.language-wing .language-hall .gateway-caption > div { width: 100%; }
.language-wing .language-hall .gateway-caption h2 { margin: 0; }
.language-wing .language-hall .gateway-caption .caption-toggle {
  display: flex;
  justify-content: center;
  width: 100%;
  padding: 0;
  text-align: center;
  pointer-events: auto;
}
.language-wing .language-hall .gateway-caption .caption-label {
  color: transparent;
  background: linear-gradient(180deg, #fbeec4, #d9b96a 55%, #a57e36);
  -webkit-background-clip: text;
  background-clip: text;
  font: 800 clamp(20px, 1.8vw, 28px)/1 var(--narrow);
  letter-spacing: .02em;
  text-transform: uppercase;
}
.language-wing .language-hall .gateway.is-open .gateway-caption,
.language-wing .language-hall .gateway.is-open .lintel { opacity: 0; }

/* A small brass plate and a round knob; nothing else on the door. */
.language-wing .language-hall .room-plaque {
  position: absolute;
  inset: auto;
  top: 41%;
  left: 50%;
  display: flex;
  align-items: baseline;
  gap: 4px;
  width: auto;
  height: auto;
  padding: 4px 9px 3px;
  border: 0;
  border-radius: 1px;
  background: linear-gradient(180deg, #fbeec4, #d9b96a 55%, #a57e36);
  box-shadow: 0 1px 3px #0006;
  color: #3b2a0d;
  transform: translateX(-50%);
}
.language-wing .language-hall .room-plaque > span { font: 700 9px/1 var(--sans); letter-spacing: .1em; color: #3b2a0d; opacity: 1; }
.language-wing .language-hall .room-plaque > b { font: 800 13px/1 var(--narrow); color: #3b2a0d; }
.language-wing .language-hall .door-hardware {
  position: absolute;
  inset: auto;
  top: 51%;
  right: 11%;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #fff6d8, #d9b96a 45%, #7c5a22);
  box-shadow: 0 3px 5px #0007;
}
.language-wing .language-hall .door-hardware::before { display: none; }
.language-wing .language-hall .door-hardware > i {
  position: absolute;
  left: 50%;
  top: 24px;
  width: 4px;
  height: 8px;
  margin-left: -2px;
  border-radius: 2px 2px 1px 1px;
  background: color-mix(in srgb, var(--door-glow, #fff) 60%, #fff);
  box-shadow: 0 0 7px var(--door-glow, #fff);
}

/* Light spills from under the door. */
.language-wing .language-hall .threshold { box-shadow: 0 -5px 18px color-mix(in srgb, var(--door-glow, #fff) 70%, transparent); }

/* Behind the open door the room sits inside the arch. */
.language-wing .language-hall .preview-lang { border-radius: var(--arch); padding-top: calc(50% + 34px); }
.language-wing .language-hall .close-door { top: 26%; }

@media (max-width: 760px) {
  .language-wing .language-hall .gateway-caption { top: 34%; }
  .language-wing .language-hall .gateway-caption .caption-label { font-size: 30px; }
  .language-wing .language-hall .room-plaque { top: 45%; }
  .language-wing .language-hall .door-hardware { top: 55%; }
  .language-wing .language-hall .close-door { top: 32%; }
}
@media (prefers-reduced-motion: reduce) {
  .language-wing .language-hall .door-window { animation: none; }
}

/* ---------- Student pass on phones: a card that flips to show the room on its back ---------- */
@media (max-width: 760px) {
  .language-wing .platform-pass {
    width: 100%;
    max-width: 340px;
    min-height: 0;
    transform: none;
  }
  .language-wing .pass-cover,
  .language-wing .pass-inside {
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    transform-origin: 50% 50%;
    transition: transform .8s cubic-bezier(.2, .8, .2, 1);
  }
  .language-wing .pass-cover { transform: perspective(1000px) rotateY(0deg); }
  .language-wing .pass-cover.is-open { transform: perspective(1000px) rotateY(180deg); }
  .language-wing .pass-inside {
    inset: 0;
    z-index: 3;
    transform: perspective(1000px) rotateY(-180deg);
    cursor: pointer;
  }
  .language-wing .platform-pass:has(.pass-cover.is-open) .pass-inside { transform: perspective(1000px) rotateY(0deg); }
}
@media (max-width: 760px) and (prefers-reduced-motion: reduce) {
  .language-wing .pass-cover,
  .language-wing .pass-inside { transition: none; }
}
/* Arched doors: fit long names and keep the keystone clean. */
.language-wing .language-hall .gateway-lang-uk .caption-label { font-size: clamp(16px, 1.4vw, 22px); }
.language-wing .language-hall .lintel { font-size: 0; color: transparent; }
.language-wing .language-hall .lintel > span { display: none; }
.language-wing .language-hall .door-leaf { overflow: hidden; }
@media (max-width: 760px) { .language-wing .language-hall .gateway-lang-uk .caption-label { font-size: 26px; } }

/* ==========================================================================
   Performance pass: the same motion, animated only with transform and opacity.
   ========================================================================== */

/* Corridor frames: drawn large once and shrunk into the door, instead of
   growing a small frame 8×, which forced huge re-rasterised layers. */
.institution-lobby .corridor-portal i {
  width: calc(15% * 8.2);
  height: calc(23% * 8.2);
  border-width: calc(clamp(1px, .13vw, 2px) * 8.2);
  box-shadow: 0 0 66px #dfc77b20, inset 0 0 98px #334c4618;
}
@keyframes corridor-infinite-door {
  0% { transform: translate(-50%, -50%) scale(.0268) rotate(-3deg); opacity: 0; }
  14% { opacity: .32; }
  72% { opacity: .24; }
  100% { transform: translate(-50%, -50%) scale(1) rotate(2deg); opacity: 0; }
}
/* The far door breathes with transform only; blend modes are flattened. */
@keyframes corridor-false-depth {
  from { transform: translate(-50%, -50%) scale(.97) rotate(-1deg); }
  to { transform: translate(-50%, -50%) scale(1.03) rotate(1deg); }
}
.institution-lobby .corridor-door { will-change: transform; }
.institution-lobby .corridor-beam,
.institution-lobby .corridor-portal::after { mix-blend-mode: normal; }
.institution-lobby .corridor-rift { filter: none; }

/* Glass letters: no per-letter filters. */
.glyph__face { filter: none; }
.glyph__body > .glyph__slice:nth-last-child(2) { text-shadow: 0 0 14px #ffffffb3; }
.glyph::after {
  background: radial-gradient(ellipse at center, #5a5f8a38, transparent 70%);
  filter: none;
}
@keyframes glyph-emerge {
  from {
    opacity: 0;
    translate: calc((var(--door-x) - var(--gx)) * 1cqw) calc((var(--door-y) - var(--gy)) * 1cqh);
    scale: .15;
  }
  60% { opacity: 1; }
  to { opacity: 1; translate: 0 0; scale: 1; }
}

/* Fanlights glow with an opacity layer instead of an animated filter. */
.language-wing .language-hall .door-window { animation: none; }
.language-wing .language-hall .door-window::after {
  content: "";
  display: block;
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(circle at 50% 100%, #ffffffa6, transparent 70%);
  opacity: 0;
  animation: room-light-glow 4.5s ease-in-out infinite alternate;
  will-change: opacity;
}
@keyframes room-light-glow { to { opacity: .55; } }

/* Teacher placeholders develop with opacity; the blur stays still. */
@keyframes mls-develop {
  0%, 100% { opacity: .3; }
  50% { opacity: .8; }
}
/* Translation seam pulses with opacity; the portal glow no longer re-blurs every frame. */
@keyframes mls-seam-pulse {
  0%, 100% { opacity: .72; }
  50% { opacity: 1; }
}
.translation-stage::before {
  filter: blur(2px);
  transition: opacity .12s linear, transform .12s linear;
  will-change: opacity, transform;
}

/* Frosted glass behind moving content is re-blurred on every scroll frame: use solid fills. */
.masthead.institution-header,
.language-wing .masthead.institution-header {
  background: #0b1220f7;
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.institution-lobby .mobile-directory,
.language-wing .mobile-directory {
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
}
.language-goal {
  -webkit-backdrop-filter: none;
  backdrop-filter: none;
  background: #fffffff0;
}

@media (prefers-reduced-motion: reduce) {
  .language-wing .language-hall .door-window::after { animation: none; }
}

/* Colour logo / 2026-09-24
   The brand mark is multicolour (oxblood, green, gold, indigo), so the header it
   sits on is paper-light like the page; the notice strip above stays dark. */
.language-wing .masthead.institution-header {
  background: #f4eddcf7;
  color: var(--ink);
  border-bottom: 1px solid rgba(21, 25, 37, .14);
}
.language-wing .masthead.institution-header .navigation a,
.language-wing .masthead.institution-header .header-entry,
.language-wing .masthead.institution-header .menu-toggle { color: var(--ink); }
.language-wing .masthead.institution-header .header-entry { border-color: rgba(21, 25, 37, .4); }
/* The colour mark is wider than the old one, so it gets a little more width to keep its height. */
.language-wing .masthead.institution-header .brand img { width: 196px; height: auto; }
@media (max-width: 760px) {
  .language-wing .masthead.institution-header .brand img { width: 148px; }
}
@media (max-width: 760px) {
  .menu-open .language-wing .masthead.institution-header { background: #f4eddc; }
  .language-wing .navigation.is-open {
    background: #f4eddc;
    border-top-color: rgba(21, 25, 37, .14);
  }
  .language-wing .navigation.is-open > a { color: var(--ink); border-bottom-color: rgba(21, 25, 37, .12); }
  .language-wing .masthead .navigation.is-open a.navigation__cta { background: var(--night); color: var(--paper); }
  .language-wing .navigation.is-open .navigation__social { color: #7d1737; border-bottom: 0; }
}