/*
 * kōan's design language, as the app uses it (apple/App/App/Theme.swift): one mono face, lowercase headings, square
 * corners, hairlines instead of shadows, a neutral ground and a single mint accent.
 */
@font-face {
  font-family: "Geist Mono";
  src: url("/geist-mono.woff2") format("woff2-variations");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: dark light;
  --bg: #1e1e1e;
  --surface: #2a2a2a;
  --rule: #383838;
  --hover: #4d4d4d;
  --ink: #cccccc;
  --strong: #ffffff;
  --muted: #919191;
  --accent: #7dd3a7;
  --bad: #ef6b73;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --surface: #f2f2f2;
    --rule: #e0e0e0;
    --hover: #c4c4c4;
    --ink: #333333;
    --strong: #111111;
    --muted: #666666;
    --accent: #1f7a50;
    --bad: #c43f3f;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 15px/1.65 "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  font-feature-settings: "liga" 0;
}

::selection {
  background: var(--accent);
  color: var(--bg);
}

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 16px;
}

@media (min-width: 640px) {
  .wrap {
    padding: 0 28px;
  }
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--strong);
}

a:focus-visible,
summary:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 2px;
}

/* Header and navigation. */
.top {
  border-bottom: 1px solid var(--rule);
}

.top .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 18px;
  padding-bottom: 14px;
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--strong);
  text-decoration: none;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.mark img {
  width: 24px;
  height: 24px;
  align-self: center;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  font-size: 13px;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--strong);
}

nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 6px;
}

/* Type. */
h1,
h2,
h3 {
  color: var(--strong);
  text-transform: lowercase;
  margin: 0;
}

h1 {
  font-size: clamp(28px, 7vw, 40px);
  font-weight: 200;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 56px 0 18px;
}

h2 {
  font-size: 20px;
  font-weight: 300;
  line-height: 1.3;
  margin: 56px 0 14px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
}

h3 {
  font-size: 15px;
  font-weight: 500;
  margin: 28px 0 6px;
}

h2 + h3 {
  margin-top: 8px;
}

p,
ul,
ol {
  margin: 0 0 14px;
}

ul,
ol {
  padding-left: 20px;
}

li {
  margin-bottom: 6px;
}

li::marker {
  color: var(--muted);
}

.lede {
  font-size: 17px;
  font-weight: 300;
  color: var(--strong);
  max-width: 42em;
}

.muted,
figcaption,
.fine {
  color: var(--muted);
}

.fine {
  font-size: 13px;
}

strong {
  color: var(--strong);
  font-weight: 500;
}

code,
pre {
  font-family: inherit;
  font-size: 13.5px;
}

code {
  color: var(--strong);
}

pre {
  margin: 0 0 16px;
  padding: 12px 14px;
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--rule);
  color: var(--strong);
  line-height: 1.55;
}

/* Lists of short items with a lowercase name on the left: features, ways to get the app. */
.rows {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  border-top: 1px solid var(--rule);
}

.rows > li {
  margin: 0;
  padding: 14px 0;
  border-bottom: 1px solid var(--rule);
}

@media (min-width: 640px) {
  .rows > li {
    display: grid;
    grid-template-columns: 11em 1fr;
    gap: 20px;
  }
}

.rows .name {
  display: block;
  color: var(--strong);
  font-weight: 500;
  text-transform: lowercase;
  margin-bottom: 4px;
}

.rows p:last-child {
  margin-bottom: 0;
}

/* Tables. */
.scroll {
  overflow-x: auto;
  margin: 0 0 16px;
}

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

th,
td {
  text-align: left;
  padding: 6px 12px 6px 0;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

th {
  color: var(--muted);
  font-weight: 400;
  text-transform: lowercase;
}

td:not(:first-child),
th:not(:first-child) {
  white-space: nowrap;
}

/* Charts, rendered by site/src/charts.py. */
figure {
  margin: 28px 0 36px;
}

figcaption {
  font-size: 13px;
  margin-bottom: 12px;
  text-transform: lowercase;
}

.chart {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  overflow: visible;
}

.chart text {
  font-family: inherit;
  fill: var(--ink);
}

.chart .lb {
  font-size: 12.5px;
}

.chart .val,
.chart .tick,
.chart .lg {
  font-size: 11.5px;
  font-variant-numeric: tabular-nums;
}

.chart .dim,
.chart .tick {
  fill: var(--muted);
}

.chart .s0 {
  fill: var(--accent);
}

.chart .s1 {
  fill: var(--muted);
}

.chart .range {
  fill-opacity: 0.4;
}

.chart .grid {
  stroke: var(--rule);
  stroke-width: 1;
  shape-rendering: crispEdges;
}

details {
  margin-top: 10px;
  font-size: 13px;
}

summary {
  cursor: pointer;
  color: var(--muted);
  text-transform: lowercase;
}

summary:hover {
  color: var(--strong);
}

details table {
  margin-top: 8px;
}

/* Footer. */
footer {
  margin-top: 72px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--muted);
}

footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 18px;
  padding-bottom: 32px;
}

footer a {
  color: var(--muted);
}

/* Prose comparison: cells wrap, and on narrow screens each row stacks under its heading. */
table.compare {
  margin-bottom: 16px;
}

.compare th,
.compare td {
  white-space: normal;
}

.compare th[scope="row"] {
  color: var(--strong);
  font-weight: 500;
}

.compare td {
  min-width: 10em;
}

@media (max-width: 639px) {
  .compare thead {
    display: none;
  }

  .compare tr,
  .compare th[scope="row"],
  .compare td {
    display: block;
  }

  .compare tr {
    padding: 14px 0;
    border-bottom: 1px solid var(--rule);
  }

  .compare th[scope="row"],
  .compare td {
    border: 0;
    padding: 0 0 6px;
    min-width: 0;
  }

  .compare td::before {
    content: attr(data-label);
    display: block;
    color: var(--muted);
    font-size: 12px;
  }
}