@font-face {
  font-family: "Oakline Sans";
  src: url("/assets/particle-faithful/ibm-plex-sans-variable.ttf") format("truetype");
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #070707;
  --panel: #101010;
  --ink: #f6f6f2;
  --muted: #92928d;
  --line: rgba(255, 255, 255, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  min-height: 100svh;
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Oakline Sans", "Helvetica Neue", Arial, sans-serif;
  font-synthesis: none;
  text-rendering: geometricPrecision;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: #050505;
  background: #fff;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: none;
}

.directory {
  background:
    radial-gradient(circle at 74% 6%, rgba(137, 117, 255, 0.13), transparent 28rem),
    radial-gradient(circle at 14% 34%, rgba(255, 138, 159, 0.1), transparent 30rem),
    #070707;
}

.directory-header {
  width: min(calc(100% - 48px), 1600px);
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-inline: auto;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 16px;
  letter-spacing: -0.03em;
}

.spark {
  width: 15px;
  height: 15px;
  display: inline-block;
  background:
    linear-gradient(transparent 45%, currentColor 45% 55%, transparent 55%),
    linear-gradient(90deg, transparent 45%, currentColor 45% 55%, transparent 55%);
  transform: rotate(45deg);
}

.directory-meta,
.route-count {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.directory-main {
  width: min(calc(100% - 48px), 1600px);
  margin-inline: auto;
}

.directory-intro {
  min-height: 60svh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.38fr);
  align-items: end;
  gap: clamp(40px, 8vw, 130px);
  padding: clamp(88px, 12vw, 180px) 0 clamp(72px, 9vw, 128px);
}

.eyebrow,
.study-number {
  color: #b7a9ff;
  font-size: 11px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.directory-intro h1 {
  max-width: 1100px;
  margin: 22px 0 0;
  font-size: clamp(64px, 10vw, 164px);
  font-weight: 300;
  letter-spacing: -0.065em;
  line-height: 0.84;
}

.directory-lead {
  max-width: 40ch;
  margin: 0 0 10px;
  color: #c4c4be;
  font-size: clamp(17px, 1.5vw, 23px);
  letter-spacing: -0.025em;
  line-height: 1.35;
}

.study-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1px;
  padding: 1px;
  background: var(--line);
}

.study-card {
  --accent: #ae9aff;
  position: relative;
  min-height: 660px;
  display: grid;
  grid-template-rows: minmax(330px, 1fr) auto;
  overflow: hidden;
  background: var(--panel);
}

.study-card:nth-child(1),
.study-card:nth-child(2),
.study-card:nth-child(3) {
  grid-column: span 4;
}

.study-card:nth-child(4) {
  grid-column: span 7;
}

.study-card:nth-child(5) {
  grid-column: span 5;
}

.study-card--dream {
  --accent: #ff87b5;
}

.study-card--bloom {
  --accent: #ff9a91;
}

.study-card--home {
  --accent: #a5c5ff;
}

.study-card--research {
  --accent: #d6b3ff;
}

.study-card-media {
  position: relative;
  min-height: 0;
  overflow: hidden;
  background: #020203;
}

.study-card-media::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, transparent 52%, rgba(0, 0, 0, 0.74));
  pointer-events: none;
}

.study-card-media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: saturate(0.82) brightness(0.83);
  transition:
    filter 420ms ease,
    transform 700ms cubic-bezier(0.2, 0.7, 0.1, 1);
}

.study-card--home .study-card-media img,
.study-card--research .study-card-media img {
  object-position: top;
}

.study-card:hover .study-card-media img,
.study-card:focus-visible .study-card-media img {
  filter: saturate(1) brightness(0.98);
  transform: scale(1.02);
}

.study-card:focus-visible {
  z-index: 2;
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.study-card-copy {
  min-height: 244px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 26px;
  padding: clamp(25px, 3vw, 42px);
}

.study-number {
  color: var(--accent);
}

.study-card h2 {
  margin: 18px 0 0;
  font-size: clamp(38px, 4vw, 62px);
  font-weight: 300;
  letter-spacing: -0.055em;
  line-height: 0.94;
}

.study-card p {
  max-width: 42ch;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.open-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--accent);
  font-size: 19px;
  transition:
    color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.study-card:hover .open-mark,
.study-card:focus-visible .open-mark {
  color: #fff;
  border-color: var(--accent);
  transform: translate(3px, -3px);
}

.directory-note {
  display: grid;
  grid-template-columns: 0.32fr minmax(0, 1fr);
  gap: clamp(40px, 8vw, 130px);
  padding: clamp(82px, 10vw, 150px) 0;
  border-bottom: 1px solid var(--line);
}

.directory-note p:last-child {
  max-width: 800px;
  margin: 0;
  color: #cacac4;
  font-size: clamp(26px, 3.8vw, 56px);
  font-weight: 300;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.directory-footer {
  width: min(calc(100% - 48px), 1600px);
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-inline: auto;
  padding: 30px 0 40px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.study-page {
  --study-accent: #b8a6ff;
  background: #000;
}

.study-page--dream {
  --study-accent: #ff8cb9;
}

.study-page--bloom {
  --study-accent: #ff9c91;
}

.study-page--home {
  --study-accent: #9fc0ff;
}

.study-page--research {
  --study-accent: #d4adff;
}

.study-bar {
  position: sticky;
  z-index: 20;
  top: 0;
  height: 58px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  padding-inline: clamp(16px, 3vw, 46px);
  border-bottom: 1px solid var(--line);
  background: rgba(5, 5, 5, 0.92);
  backdrop-filter: blur(18px);
}

.study-back {
  justify-self: start;
  font-size: 13px;
  letter-spacing: -0.02em;
}

.study-back::before {
  margin-right: 9px;
  color: var(--study-accent);
  content: "←";
}

.study-title {
  color: #b7b7b0;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.study-switcher {
  display: flex;
  justify-self: end;
  gap: 5px;
}

.study-switcher a {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 999px;
  color: #85857f;
  font-size: 9px;
}

.study-switcher a:hover,
.study-switcher a:focus-visible,
.study-switcher a[aria-current="page"] {
  color: #fff;
  border-color: var(--study-accent);
  outline: none;
}

.reference-sequence,
.reference-document {
  width: min(100%, 1920px);
  margin-inline: auto;
  background: #000;
}

.reference-panel {
  margin: 0;
  line-height: 0;
}

.reference-panel img,
.reference-document img {
  width: 100%;
  height: auto;
  display: block;
}

.study-footer {
  width: min(100%, 1920px);
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-inline: auto;
  padding: 28px clamp(18px, 4vw, 64px) 34px;
  border-top: 1px solid var(--line);
  color: #9b9b95;
  background: #070707;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.study-footer a:last-child::after {
  margin-left: 9px;
  color: var(--study-accent);
  content: "→";
}

@media (max-width: 980px) {
  .directory-intro {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .study-card:nth-child(n) {
    grid-column: span 6;
  }

  .study-card:nth-child(5) {
    grid-column: 4 / span 6;
  }
}

@media (max-width: 700px) {
  .directory-header,
  .directory-main,
  .directory-footer {
    width: min(calc(100% - 28px), 1600px);
  }

  .directory-meta {
    display: none;
  }

  .directory-intro {
    padding-top: 76px;
  }

  .directory-intro h1 {
    font-size: clamp(56px, 18vw, 92px);
  }

  .study-card:nth-child(n) {
    min-height: 550px;
    grid-column: 1 / -1;
  }

  .study-card-copy {
    min-height: 220px;
  }

  .directory-note {
    grid-template-columns: 1fr;
  }

  .directory-footer {
    flex-direction: column;
  }

  .study-bar {
    grid-template-columns: 1fr auto;
    padding-inline: 14px;
  }

  .study-title {
    display: none;
  }

  .study-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}