/* IBM Plex Sans — SIL OFL, https://github.com/IBM/plex */
@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
  src: url("/fonts/ibm-plex-sans-latin.woff2") format("woff2");
}

:root {
  color-scheme: light dark;
  --background: #f7f7f5;
  --text: #181818;
  --muted: rgba(24, 24, 24, 0.62);
  --rule: rgba(24, 24, 24, 0.2);
  --link-line: rgba(24, 24, 24, 0.42);
  --specimen-filter: none;
  --sans:
    "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #181818;
    --text: #fff;
    --muted: rgba(255, 255, 255, 0.56);
    --rule: rgba(255, 255, 255, 0.22);
    --link-line: rgba(255, 255, 255, 0.42);
    --specimen-filter: invert(1);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scrollbar-gutter: stable;
  background: var(--background);
  color: var(--text);
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration-line: underline;
  text-decoration-style: dotted;
  text-decoration-color: var(--link-line);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-style: solid;
  text-decoration-color: currentColor;
}

.public-header a:hover,
.public-header [aria-current="page"] {
  color: var(--text);
}

.font-list {
  max-width: 1500px;
  margin: 0 auto;
  padding: 64px clamp(20px, 4vw, 64px) 100px;
  padding-right: max(52px, 4vw);
}

.font-intro {
  margin-bottom: 48px;
}

.font-intro h1 {
  margin: 0;
  font-size: clamp(36px, 4vw, 44px);
  font-weight: 600;
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.font-intro p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.4;
}

.font-row {
  display: grid;
  grid-template-columns: minmax(190px, 1fr) minmax(0, 4fr);
  scroll-margin-top: 24px;
  border-top: 1px solid var(--rule);
  padding: 18px 0 36px;
}

.font-rail {
  position: fixed;
  z-index: 20;
  top: 50%;
  right: max(24px, calc(env(safe-area-inset-right) + 12px));
  width: 18px;
  transform: translateY(-50%);
}

.font-rail-track {
  display: grid;
}

.font-jump {
  --magnification: 1;
  position: relative;
  display: flex;
  width: 18px;
  height: 12px;
  align-items: center;
  justify-content: flex-end;
}

.font-jump::before {
  position: absolute;
  top: 50%;
  right: calc(100% + 8px);
  padding: 4px 7px;
  border-radius: 4px;
  background: var(--text);
  color: var(--background);
  content: attr(data-label);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.2;
  opacity: 0;
  pointer-events: none;
  transform: translate(4px, -50%);
  transition:
    opacity 100ms ease-out,
    transform 100ms ease-out,
    visibility 100ms;
  visibility: hidden;
  white-space: nowrap;
}

.font-jump:hover::before,
.font-jump:focus-visible::before {
  opacity: 1;
  transform: translate(0, -50%);
  visibility: visible;
}

.font-jump::after {
  width: 8px;
  height: 2px;
  border-radius: 999px;
  background: var(--muted);
  content: "";
  transform: scaleX(var(--magnification));
  transform-origin: right center;
  transition:
    background-color 100ms ease-out,
    transform 100ms ease-out;
}

.font-jump:hover::after,
.font-jump:focus-visible::after,
.font-jump[aria-current="location"]::after {
  background: var(--text);
}

.font-jump:focus-visible {
  --magnification: 2.5;
  outline: none;
}

.font-row-meta {
  padding-right: 24px;
  font-size: 12px;
  line-height: 1.4;
}

.font-row-meta h2 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.1;
}

.font-number,
.font-separator,
.font-row-meta p {
  color: var(--muted);
}

.font-separator {
  margin: 0 0.16em;
}

.font-row-meta p {
  display: flex;
  align-items: center;
  gap: 0.45em;
  margin: 0;
}

.status-dot {
  display: inline-block;
  width: 0.55em;
  height: 0.55em;
  flex: 0 0 auto;
  border-radius: 50%;
  background: currentColor;
}

.font-row-specimen {
  display: block;
  min-width: 0;
}

.font-row-specimen img,
.proof-specimen img {
  display: block;
  width: 100%;
  height: auto;
  filter: var(--specimen-filter);
}

.proof-sheet {
  display: grid;
  grid-template-columns: minmax(180px, 0.8fr) minmax(0, 4fr);
  gap: clamp(28px, 4vw, 64px);
  min-height: calc(100vh - 61px);
  max-width: 1600px;
  margin: 0 auto;
  padding: clamp(48px, 7vw, 108px) clamp(18px, 3vw, 48px) 100px;
}

.proof-meta {
  font-size: 13px;
  line-height: 1.4;
}

.proof-meta h1 {
  margin: 0 0 30px;
  font-size: 21px;
  font-weight: 600;
  line-height: 1;
}

.proof-meta h1 span,
.proof-meta dt {
  color: var(--muted);
}

.proof-meta h1 span {
  margin-right: 0.2em;
}

.proof-meta dl {
  margin: 0;
}

.proof-meta dt {
  margin-top: 13px;
  font-size: 11px;
}

.proof-meta dd {
  display: flex;
  align-items: center;
  gap: 0.45em;
  margin: 0;
}

.proof-note {
  max-width: 30ch;
  margin-top: 36px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.proof-note p {
  margin: 0;
}

.proof-source {
  display: inline-block;
  margin-top: 24px;
  border-bottom: 1px solid currentColor;
  font-size: 13px;
}

.proof-specimen {
  min-width: 0;
}

@media (max-width: 720px) {
  .font-list {
    padding-top: 48px;
  }

  .font-row,
  .proof-sheet {
    grid-template-columns: 1fr;
  }

  .font-row-meta {
    margin-bottom: 20px;
    padding-right: 44px;
  }

  .proof-sheet {
    gap: 44px;
  }

  .proof-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 24px;
  }

  .proof-meta h1,
  .proof-meta .proof-note,
  .proof-meta .proof-source {
    grid-column: 1 / -1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .font-jump::before,
  .font-jump::after {
    transition: none;
  }

  .font-jump::after {
    transform: none;
  }
}