/* every page that isn't the home: same column, same name in the corner, same quiet links at the bottom */

:root {
  --surface: var(--card-2);
  --surface-2: color-mix(in srgb, var(--card-2) 70%, var(--ink-4));
  --ease: cubic-bezier(0.2, 0.7, 0.1, 1);
}

.skip {
  position: fixed;
  left: 12px;
  top: 12px;
  z-index: 100;
  padding: 6px 12px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--bg);
  font-size: 14px;
  transform: translateY(-200%);
}

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

.page {
  --col: 600px;
  max-width: var(--col);
  margin: 0 auto;
  padding: max(14vh, 88px) 24px 72px;
}

.page.wide {
  --col: 680px;
}

.page-name {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink-3);
  view-transition-name: name;
  transition: color 0.2s ease, transform 0.4s var(--spring);
}

.page-name:hover {
  color: var(--ink);
  transform: translateX(-3px);
}

.crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 8px;
  margin-top: 6px;
  font-size: 13px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.crumb a {
  transition: color 0.2s ease;
}

.crumb a:hover {
  color: var(--ink);
}

.crumb > * + *::before {
  content: "·";
  margin-right: 8px;
  color: var(--ink-4);
}

.page-title {
  width: fit-content;
  margin-top: 8px;
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.15;
  text-wrap: balance;
}

.lede {
  margin-top: 16px;
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.6;
  text-wrap: pretty;
}

/* the facts under a case study title, small and in two columns */
.facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 24px;
  margin-top: 28px;
}

.facts dt {
  font-size: 12px;
  color: var(--ink-3);
}

.facts dd {
  margin-top: 1px;
  font-size: 15px;
  color: var(--ink);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  margin-top: 24px;
  font-size: 15px;
}

.links a,
.prose a,
.cs-text a,
.also a,
.tl-links a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--ink-4);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-color 0.2s ease, color 0.2s ease;
}

.links a:hover,
.prose a:hover,
.cs-text a:hover,
.also a:hover,
.tl-links a:hover {
  text-decoration-color: currentColor;
}

/* reading */

.prose,
.cs-text {
  margin-top: 40px;
  color: var(--ink-2);
  font-size: 16.5px;
  line-height: 1.75;
  text-wrap: pretty;
}

.prose > * + *,
.cs-text > * + * {
  margin-top: 1.1em;
}

.prose h2,
.cs-h {
  margin-top: 2.4em;
  font-size: 16.5px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.prose h2 + *,
.cs-h + .cs-text > :first-child {
  margin-top: 0.5em;
}

.prose strong,
.cs-text strong {
  font-weight: 500;
  color: var(--ink);
}

.prose ul,
.prose ol,
.cs-text ul,
.cs-text ol {
  padding-left: 1.2em;
}

.prose li + li,
.cs-text li + li {
  margin-top: 0.35em;
}

.prose blockquote {
  padding-left: 16px;
  border-left: 1.5px solid var(--line);
  color: var(--ink);
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.84em;
  color: var(--ink);
  background: var(--card-2);
  padding: 2px 6px;
  border-radius: 5px;
}

pre,
.cmd {
  display: block;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--card-2);
  color: var(--ink);
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
}

pre code {
  padding: 0;
  background: none;
  font-size: inherit;
}

.prose table,
.cs-text table,
.table-view table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

.prose th,
.prose td,
.cs-text th,
.cs-text td,
.table-view th,
.table-view td {
  padding: 9px 12px 9px 0;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  font-weight: 400;
}

.prose th,
.cs-text th,
.table-view th {
  font-size: 12px;
  color: var(--ink-3);
}

.prose td,
.cs-text td,
.table-view td {
  color: var(--ink);
}

.num {
  text-align: right !important;
}

tr.hi td {
  font-weight: 500;
}

.table-scroll {
  overflow-x: auto;
}

/* figures: a soft card, images open bigger when clicked */

.prose figure,
.cs-text figure {
  margin-top: 2em;
  margin-bottom: 2em;
}

.prose img,
.cs-text img {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.dark-fig {
  padding: 10px;
  border-radius: 16px;
  background: #111;
}

.dark-fig img {
  border-radius: 8px;
}

figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--ink-3);
}

.zoomable {
  cursor: zoom-in;
}

.zoom {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: grid;
  place-items: center;
  padding: 24px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  cursor: zoom-out;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.zoom.on {
  opacity: 1;
}

.zoom img {
  max-width: min(1200px, 100%);
  max-height: 100%;
  border-radius: 12px;
  box-shadow: var(--shadow);
  transform: scale(0.96);
  transition: transform 0.45s var(--spring);
}

.zoom.on img {
  transform: none;
}

/* the cards charts and diagrams sit in */

.cs-figure,
.fig.card {
  margin-top: 40px;
  padding: 20px;
  border-radius: 16px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.cs-figure .fig-title,
.fig-title {
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--ink-3);
}

.cs-text .fig {
  margin-top: 2em;
  margin-bottom: 2em;
}

.cap {
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.muted {
  color: var(--ink-3);
}

.soft {
  color: var(--ink-2);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  font-size: 12px;
  color: var(--ink-2);
}

.legend i {
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 6px;
  border-radius: 3px;
  vertical-align: -1px;
}

.hbars {
  display: grid;
  gap: 16px;
  margin-top: 18px;
}

.hbar-group > span {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--ink-2);
}

.hbar {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 14px;
  margin-top: 4px;
  font-size: 12px;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

.hbar b {
  display: block;
  height: 100%;
  width: 0;
  border-radius: 0 4px 4px 0;
  transition: width 1.1s var(--spring);
  transition-delay: calc(var(--k) * 70ms + 120ms);
}

.live .hbar b,
html:not(.js) .hbar b {
  width: var(--w);
}

.hbar em {
  font-style: normal;
  opacity: 0;
  transition: opacity 0.4s ease;
  transition-delay: calc(var(--k) * 70ms + 200ms);
}

.live .hbar em,
html:not(.js) .hbar em {
  opacity: 1;
}

.table-view {
  margin-top: 18px;
  font-size: 14px;
}

.table-view summary {
  display: inline-block;
  font-size: 13px;
  color: var(--ink-3);
  cursor: pointer;
  list-style: none;
  text-decoration: underline;
  text-decoration-color: var(--ink-4);
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.table-view summary::-webkit-details-marker {
  display: none;
}

.table-view summary:hover {
  color: var(--ink);
}

.table-view[open] summary {
  margin-bottom: 10px;
}

/* the paper chart, drawn by charts.js */

.chart {
  position: relative;
  width: 100%;
}

.chart svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.chart .grid line {
  stroke: var(--line);
  stroke-width: 1;
}

.chart text {
  font-family: var(--sans);
  font-size: 11px;
  fill: var(--ink-3);
}

.chart .ln {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: var(--len);
  stroke-dashoffset: var(--len);
  transition: stroke-dashoffset 1.5s var(--ease);
}

.live .chart .ln,
.chart.in .ln {
  stroke-dashoffset: 0;
}

.chart .pt {
  stroke: var(--bg);
  stroke-width: 2;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.live .chart .pt,
.chart.in .pt {
  opacity: 1;
  transition-delay: calc(var(--k) * 160ms + 400ms);
}

.chart .gap {
  opacity: 0;
  transition: opacity 1s ease 1s;
}

.live .chart .gap,
.chart.in .gap {
  opacity: 1;
}

.chart .endlabel {
  fill: var(--ink-2);
  font-size: 12px;
}

.chart .tip {
  position: absolute;
  z-index: 3;
  padding: 6px 10px;
  border-radius: 8px;
  background: var(--card);
  box-shadow: var(--shadow);
  font-size: 12px;
  color: var(--ink);
  pointer-events: none;
  white-space: nowrap;
}

/* sprout vs gpt-2, one small chart per benchmark */

.bench-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 18px;
}

.bench-title {
  margin: 0 0 6px;
  min-height: 2.8em;
  font-size: 12px;
  line-height: 1.35;
  color: var(--ink-3);
}

.bench-title b {
  display: block;
  font-weight: 500;
  color: var(--ink);
}

.bench svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

.bench text {
  font-family: var(--sans);
  font-size: 11px;
  fill: var(--ink-3);
}

.bench .b-axis {
  fill: var(--ink-3);
}

.bench .b-gpt2-lab {
  font-size: 10px;
}

.bench .b-me-lab {
  font-size: 11.5px;
  font-weight: 500;
  fill: var(--ink);
}

.bench-key {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--ink-3);
}

.bench-key i {
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 6px;
  border-radius: 50%;
}

.k-me {
  background: var(--ink);
}

.k-me2 {
  border: 1.6px solid var(--ink);
}

.k-gpt2 {
  background: var(--ink-4);
}

.bench .cap {
  margin-top: 8px;
}

/* svg figures were drawn with fixed colours, so they follow the theme here */
.bench [stroke="#ececea"],
[stroke="#ececea"] {
  stroke: var(--line);
}

[fill="#c9c9c6"] {
  fill: var(--ink-4);
}

[stroke="#c9c9c6"] {
  stroke: var(--ink-4);
}

[fill="#0f0f0f"] {
  fill: var(--ink);
}

[stroke="#0f0f0f"] {
  stroke: var(--ink);
}

[fill="#ffffff"] {
  fill: var(--bg);
}

[style*="background: #c9c9c6"] {
  background: var(--ink-4) !important;
}

.wsd-line.faint,
.ratio-ticks.faint {
  stroke: var(--ink-4);
  --tick: var(--ink-4);
}

/* case studies: the old two column sections become one column with small headings */

.cs-body {
  margin-top: 16px;
}

.cs-sec {
  display: block;
  padding: 0;
  border: 0;
}

.cs-h {
  position: static;
  margin-top: 2.6em;
}

.cs-text {
  max-width: none;
  margin-top: 0.5em;
}

.next-card {
  display: block;
  padding: 0;
  background: none;
}

/* buttons, mostly in the playground demos */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  background: var(--card-2);
  color: var(--ink);
  font-size: 14px;
  white-space: nowrap;
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.35s var(--spring), opacity 0.2s ease;
}

.btn:hover {
  background: var(--surface-2);
}

.btn:active {
  transform: scale(0.96);
}

.btn.dark {
  background: var(--ink);
  color: var(--bg);
}

.btn.dark:hover {
  background: color-mix(in srgb, var(--ink) 85%, var(--bg));
}

.btn.line {
  background: transparent;
  box-shadow: inset 0 0 0 1px var(--line);
}

.btn.line:hover {
  box-shadow: inset 0 0 0 1px var(--ink-3);
}

.btn.small {
  height: 30px;
  padding: 0 12px;
  font-size: 13px;
}

.btn:disabled {
  opacity: 0.4;
  cursor: default;
}

/* the playground: its own pieces, rounded and fitted into the column */

.pg .models {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.pg .model {
  border-radius: 14px;
}

.pg .model.on {
  color: color-mix(in srgb, var(--bg) 55%, var(--ink));
}

.pg .model.on .name,
.pg .msg.you,
.fmt .you {
  color: var(--bg);
}

.pg .model.on .state {
  color: color-mix(in srgb, var(--bg) 45%, var(--ink));
}

.pg .model.on .bar {
  background: color-mix(in srgb, var(--bg) 25%, var(--ink));
  color: var(--bg);
}

.pg .chat-panel,
.pg .reads-card,
.pg .digits {
  border-radius: 18px;
}

.pg .ff {
  margin-top: 18px;
  border-radius: 12px;
  font-size: 14px;
}

.pg .pg-models,
.pg .chat-panel {
  margin-top: 28px;
}

.pg .suggest-row .btn:hover {
  background: var(--card);
}

.pg .outs b {
  background: linear-gradient(to top, var(--ink-4) calc(var(--v) * 100%), transparent 0);
}

.pg .tk.cut b {
  background: color-mix(in srgb, var(--accent) 22%, transparent);
}

.pg .note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--ink-3);
}

.pg .note a {
  color: var(--ink-2);
  text-decoration: underline;
  text-decoration-color: var(--ink-4);
  text-underline-offset: 3px;
}

.pg-demo {
  margin-top: 64px;
}

.pg .reads-card {
  order: 0;
}

.pg .demo-grid,
.pg .reads-grid {
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.h-section {
  font-size: 16.5px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.demo-copy .soft {
  margin-top: 10px;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink-2);
}

.demo-copy .row {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

@media (max-width: 620px) {
  .pg .models {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* the end of a page: what's next, then the same links as the home */

.also {
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 15px;
  color: var(--ink-2);
}

.pager {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.pager a {
  display: block;
  font-size: 15px;
  line-height: 1.4;
  transition: transform 0.4s var(--spring);
}

.pager a span {
  display: block;
  margin-bottom: 2px;
  font-size: 12px;
  color: var(--ink-3);
}

.pager a:hover {
  transform: translateX(3px);
}

.pager .newer {
  grid-column: 2;
  text-align: right;
}

.pager .newer:hover {
  transform: translateX(-3px);
}

.page-foot {
  margin-top: 64px;
}

.page-foot .elsewhere {
  margin-top: 0;
}

/* lists: the timeline and the writing index */

.list {
  margin-top: 28px;
}

.group + .group {
  margin-top: 28px;
}

.group h2 {
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 400;
  color: var(--ink-3);
}

.list .row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding: 7px 0;
  transition: opacity 0.3s ease, transform 0.45s var(--spring);
}

.list .row .m {
  flex-shrink: 0;
  font-size: 13px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

@media (hover: hover) {
  .list:has(.row:hover) .row:not(:hover) {
    opacity: 0.4;
  }

  .list .row:hover {
    transform: translateX(3px);
  }
}

.tl {
  position: relative;
  margin-top: 36px;
  list-style: none;
}

.tl-line {
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--line);
}

.tl-fill {
  display: none;
}

.tl-item {
  position: relative;
  padding-left: 32px;
}

.tl-item + .tl-item {
  margin-top: 36px;
}

/* dots still grow with the model, just smaller than before */
.tl-node {
  --s: 7px;
  --d: clamp(5px, calc(var(--s) * 0.42), 13px);
  position: absolute;
  left: calc(5.5px - var(--d) / 2);
  top: calc(31px - var(--d) / 2);
  width: var(--d);
  height: var(--d);
  border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 0 4px var(--bg);
}

.tl-node.tiny {
  --s: 0px;
}

.tl-date {
  display: flex;
  gap: 8px;
  color: var(--ink-3);
}

.tl-day {
  color: var(--ink-4);
}

.tl-name {
  margin-top: 2px;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.015em;
}

.tl-text {
  margin-top: 4px;
  color: var(--ink-2);
  font-size: 15px;
  line-height: 1.65;
}

.tl-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 6px;
  margin-top: 10px;
}

.tl-facts span {
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--card-2);
  font-size: 12px;
  color: var(--ink-2);
}

.tl-links {
  display: flex;
  gap: 14px;
  margin-top: 8px;
}

/* scrolling brings things in softly, once */

.js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.7s ease, transform 0.9s var(--spring);
}

.js [data-reveal].in {
  opacity: 1;
  transform: none;
}

.page-head > * {
  animation: up 0.7s var(--spring) both;
  animation-delay: calc(var(--k, 0) * 60ms);
}

@keyframes up {
  from {
    opacity: 0;
    transform: translateY(8px);
    filter: blur(4px);
  }
}

/* views arriving from another page skip the stagger, the transition already moved them */
html.vt-in .page-head > * {
  animation: none;
}

@media (max-width: 620px) {
  .page {
    padding-top: 84px;
  }

  .page-title {
    font-size: 27px;
  }

  .bench-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .pager {
    grid-template-columns: minmax(0, 1fr);
  }

  .pager .newer {
    grid-column: 1;
    text-align: left;
  }

  .wsd text {
    font-size: 22px;
  }
}

@media print {
  .controls,
  .page-foot,
  .pager {
    display: none;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
}