/*
 * astravo.eu. Colours are the app's tokens (talvo/packages/ui/src/styles.css),
 * so the site and the product look like one thing. Berry appears only in the
 * mark: in the app it means "needs your attention", never decoration.
 */

@font-face {
  font-family: "Familjen Grotesk";
  font-weight: 600;
  font-display: swap;
  src: url(/fonts/familjen-grotesk-latin-600-normal.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Familjen Grotesk";
  font-weight: 600;
  font-display: swap;
  src: url(/fonts/familjen-grotesk-latin-ext-600-normal.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Atkinson Hyperlegible Next";
  font-weight: 200 800;
  font-display: swap;
  src: url(/fonts/atkinson-hyperlegible-next-latin-wght-normal.woff2) format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Atkinson Hyperlegible Next";
  font-weight: 200 800;
  font-display: swap;
  src: url(/fonts/atkinson-hyperlegible-next-latin-ext-wght-normal.woff2) format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --snow: #f4f6f4;
  --snow-deep: #e9eeec;
  --paper: #ffffff;
  --ink: #15212a;
  --slate: #5b6b73;
  --line: #dde3e1;
  --line-strong: #c5cfcc;
  --spruce: #1d5c57;
  --spruce-ink: #ffffff;
  --berry: #c2334d;

  --sans: "Atkinson Hyperlegible Next", ui-sans-serif, system-ui, sans-serif;
  --display: "Familjen Grotesk", "Atkinson Hyperlegible Next", ui-sans-serif, sans-serif;

  /* Major-third scale (1.25) from an 18px body; 15px is the smallest size used. */
  --step--1: 0.9375rem;
  --step-0: 1.125rem;
  --step-1: 1.40625rem;
  --step-2: 1.7578rem;
  --step-3: 2.1973rem;
  --step-5: 3.4332rem;

  --measure: 36rem;
  --gutter: clamp(1.25rem, 5vw, 4rem);
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --snow: #0f171c;
    --snow-deep: #152027;
    --paper: #18242b;
    --ink: #e6ecea;
    --slate: #9aa8ad;
    --line: #24323a;
    --line-strong: #33434c;
    --spruce: #5fb3a8;
    --spruce-ink: #0b1418;
    --berry: #f06a80;
  }
}

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

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

body {
  margin: 0;
  background: var(--snow);
  color: var(--ink);
  font: 400 var(--step-0) / 1.45 var(--sans);
  font-feature-settings: "kern", "ss01";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}

p,
ul,
dl {
  margin: 0;
}

p {
  text-wrap: pretty;
}

a {
  color: var(--spruce);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 2px solid var(--spruce);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--spruce);
  color: var(--spruce-ink);
}

.wrap {
  max-width: 72rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip {
  position: absolute;
  left: 1rem;
  top: -4rem;
  padding: 0.5rem 0.75rem;
  background: var(--paper);
  border-radius: 6px;
}

.skip:focus {
  top: 1rem;
}

/* Header */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--ink);
  font: 600 1.1875rem / 1 var(--display);
  text-decoration: none;
}

.mark {
  width: 26px;
  height: 26px;
  flex: none;
}

.mark .tile {
  fill: var(--spruce);
}

.mark .glyph {
  fill: var(--spruce-ink);
}

.mark .ring {
  fill: none;
  stroke: var(--spruce-ink);
}

.mark .dot {
  fill: var(--berry);
  stroke: var(--spruce);
}

.top nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: var(--step--1);
}

.top nav > a:not(.btn) {
  color: var(--ink);
  text-decoration: none;
}

.top nav > a:not(.btn):hover {
  text-decoration: underline;
}

/* Buttons: the app's lg button, 44px tall. */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0 1.25rem;
  border: 1px solid transparent;
  border-radius: 8px;
  font: 600 1rem / 1 var(--sans);
  text-decoration: none;
  white-space: nowrap;
}

.btn.small {
  min-height: 2.25rem;
  padding: 0 0.875rem;
  font-size: var(--step--1);
}

.btn.primary {
  background: var(--spruce);
  color: var(--spruce-ink);
}

.btn.primary:hover {
  filter: brightness(1.1);
}

.btn.secondary {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn.secondary:hover {
  border-color: var(--slate);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

/* Hero */

.hero {
  padding-block: clamp(3.5rem, 9vw, 7.5rem) clamp(3.5rem, 7vw, 6rem);
}

.hero h1 {
  font-size: clamp(2.25rem, 1.45rem + 3.4vw, var(--step-5));
  line-height: 1.08;
  max-width: 15em;
}

.lead {
  margin-top: 1.5rem;
  max-width: var(--measure);
  font-size: clamp(var(--step-0), 1rem + 0.6vw, var(--step-1));
  line-height: 1.4;
  color: var(--slate);
}

/* Product screenshot, once there is one (see the comment in index.html). */
.shot {
  margin: 0 0 clamp(3.5rem, 7vw, 6rem);
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 12px;
}

/* Sections */

section {
  border-top: 1px solid var(--line);
  padding-block: clamp(3rem, 7vw, 5.5rem);
}

section h2 {
  font-size: clamp(var(--step-2), 1.3rem + 1.5vw, var(--step-3));
  line-height: 1.15;
}

.intro {
  margin-top: 1rem;
  max-width: var(--measure);
  font-size: clamp(var(--step-0), 1rem + 0.6vw, var(--step-1));
  line-height: 1.4;
  color: var(--slate);
}

/*
 * Heading left, text right on wide screens. The text column stays near 64
 * characters a line; a two-column grid there would drop under 45.
 */
@media (min-width: 60rem) {
  .split {
    display: grid;
    grid-template-columns: 16rem minmax(0, 1fr);
    gap: 4rem;
  }

  .split .intro {
    margin-top: 0.35rem;
  }
}

/* Two columns at most, and only from 60rem: narrower, a column is under 45 characters. */
.items {
  display: grid;
  gap: 2.25rem 3.5rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding: 0;
  list-style: none;
}

@media (min-width: 60rem) {
  .items.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.items > li {
  border-top: 1px solid var(--line-strong);
  padding-top: 1.125rem;
  max-width: var(--measure);
}

.items h3 {
  font-size: var(--step-1);
  line-height: 1.25;
}

.items p {
  margin-top: 0.5rem;
}

/* Apps: a two-column list, one row per app. */

.apps {
  margin-top: clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line-strong);
}

.apps > div {
  display: grid;
  gap: 0.25rem 2rem;
  padding-block: 1rem;
  border-top: 1px solid var(--line-strong);
}

@media (min-width: 48rem) {
  .apps > div {
    grid-template-columns: 13rem minmax(0, 1fr);
  }
}

.apps dt {
  font-weight: 700;
}

.apps dd {
  margin: 0;
}

/* Not yet */

.plain {
  margin-top: 1.5rem;
  padding-left: 1.25rem;
  max-width: var(--measure);
}

.plain li + li {
  margin-top: 0.25rem;
}

/* Footer */

footer {
  border-top: 1px solid var(--line);
  padding-block: 2rem 3rem;
  font-size: var(--step--1);
  color: var(--slate);
}

footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
}

footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  padding: 0;
  list-style: none;
}

/* 404 */

.lost {
  min-height: 60vh;
}