/*
 * The palette and the boxes are lifted from src/index.css, so the site and the
 * app it advertises are visibly the same piece of software.
 */

:root {
  --bg-base: #e5e5e5;
  --bg-panel: #f5f5f5;
  --bg-input: #ffffff;
  --bg-inverted: #2b2b2b;
  --border-light: #a3a3a3;
  --border-dark: #111111;
  --text-main: #111111;
  --text-muted: #737373;
  --text-inverted: #ffffff;
  --hover-bg: #d4d4d4;

  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
  --page: 1140px;
}

:root[data-theme="dark"] {
  --bg-base: #121212;
  --bg-panel: #1e1e1e;
  --bg-input: #121212;
  --bg-inverted: #2d2d2d;
  --border-light: #333333;
  --border-dark: #555555;
  --text-main: #e0e0e0;
  --text-muted: #888888;
  --hover-bg: #2a2a2a;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-base: #121212;
    --bg-panel: #1e1e1e;
    --bg-input: #121212;
    --bg-inverted: #2d2d2d;
    --border-light: #333333;
    --border-dark: #555555;
    --text-main: #e0e0e0;
    --text-muted: #888888;
    --hover-bg: #2a2a2a;
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  margin: 0;
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition:
    background-color 0.3s,
    color 0.3s;
}

img,
svg {
  max-width: 100%;
}

a {
  color: inherit;
}

/* ---------- shared furniture ---------- */

.wrap {
  width: 100%;
  max-width: var(--page);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 14px;
}

.section {
  padding: 88px 0;
}

.section + .section {
  border-top: 3px solid var(--border-light);
}

.section-head {
  max-width: 640px;
  margin-bottom: 44px;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

h1 {
  font-size: clamp(34px, 5vw, 54px);
  font-weight: 800;
}

h2 {
  font-size: clamp(26px, 3.4vw, 36px);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

h3 {
  font-size: 18px;
  font-weight: 700;
}

p {
  margin: 0;
}

.lede {
  font-size: 18px;
  color: var(--text-muted);
  font-weight: 500;
}

.icon {
  width: 24px;
  height: 24px;
  flex: none;
  display: block;
}

/* ---------- the app's boxes ---------- */

.box {
  background-color: var(--bg-panel);
  border: 3px solid var(--border-light);
  border-radius: 12px;
  box-shadow: 4px 4px 0 var(--border-light);
  transition:
    background-color 0.3s,
    border-color 0.2s,
    box-shadow 0.2s,
    transform 0.2s;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 12px;
  border: 3px solid var(--border-dark);
  background-color: var(--bg-inverted);
  color: var(--text-inverted);
  box-shadow: 2px 2px 0 var(--border-dark);
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s;
}

.btn:active {
  transform: translate(2px, 2px);
  box-shadow: none;
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--border-light);
  box-shadow: 2px 2px 0 var(--border-light);
}

.btn-ghost:hover {
  background-color: var(--hover-bg);
}

.btn .icon {
  width: 18px;
  height: 18px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 2px solid var(--border-light);
  border-radius: 9px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.chip .icon {
  width: 14px;
  height: 14px;
}

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--bg-panel);
  border-bottom: 3px solid var(--border-light);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-right: auto;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  display: block;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav a {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

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

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  flex: none;
  padding: 0;
  border: 2px solid var(--border-light);
  border-radius: 10px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition:
    color 0.15s,
    background-color 0.15s;
}

.theme-toggle:hover {
  background-color: var(--hover-bg);
  color: var(--text-main);
}

.theme-toggle .icon {
  width: 18px;
  height: 18px;
}

.theme-toggle .on-dark {
  display: none;
}

:root[data-theme="dark"] .theme-toggle .on-dark {
  display: block;
}

:root[data-theme="dark"] .theme-toggle .on-light {
  display: none;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .on-dark {
    display: block;
  }
  :root:not([data-theme="light"]) .theme-toggle .on-light {
    display: none;
  }
}


/* ---------- hero ---------- */

.hero {
  padding: 76px 0 0;
}

.hero-inner {
  display: grid;
  gap: 34px;
  justify-items: start;
  max-width: 780px;
}

.hero h1 {
  max-width: 15ch;
}

.hero .lede {
  max-width: 56ch;
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.hero-note {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.hero-shot {
  margin-top: 56px;
}

.shot {
  display: block;
  width: 100%;
  /* Without this the height attribute on the img pins the box and the drawing
     letterboxes inside it. */
  height: auto;
  border-radius: 14px;
}

.shot-frame {
  padding: 0;
  overflow: hidden;
  border-radius: 15px;
  box-shadow: 10px 10px 0 var(--border-light);
  line-height: 0;
}

/* ---------- claims strip ---------- */

.claims {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding: 34px 0 0;
}

.claim {
  padding: 20px;
  display: grid;
  gap: 8px;
}

.claim .icon {
  width: 22px;
  height: 22px;
  color: var(--text-main);
}

.claim strong {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.claim span {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ---------- feature grid ---------- */

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.card {
  padding: 26px;
  display: grid;
  gap: 12px;
  align-content: start;
}

.card:hover {
  border-color: var(--text-main);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border-light);
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background-color: var(--bg-inverted);
  color: var(--text-inverted);
  margin-bottom: 4px;
}

.card p {
  font-size: 14.5px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ---------- spotlights ---------- */

.spotlight {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 56px;
  align-items: center;
}

.spotlight + .spotlight {
  margin-top: 88px;
}

/* Flipped, the picture moves left; it keeps the wider half of the row. */
.spotlight.flip {
  grid-template-columns: 7fr 5fr;
}

.spotlight.flip .spotlight-copy {
  order: 2;
}

.spotlight-copy {
  display: grid;
  gap: 18px;
  align-content: start;
}

.spotlight-copy p {
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 500;
}

.ticks {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.ticks li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14.5px;
  font-weight: 600;
}

.ticks .icon {
  width: 19px;
  height: 19px;
  margin-top: 2px;
  color: var(--text-main);
}

/* ---------- tables ---------- */

.specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.spec {
  padding: 0;
  overflow: hidden;
}

.spec header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 24px;
  background-color: var(--hover-bg);
  border-bottom: 3px solid var(--border-light);
}

.spec header h3 {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 13px;
}

.spec header span {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
}

table {
  width: 100%;
  border-collapse: collapse;
}

.spec td {
  padding: 13px 24px;
  font-size: 14px;
  border-bottom: 2px solid var(--border-light);
  vertical-align: top;
}

.spec tr:last-child td {
  border-bottom: 0;
}

.spec td:first-child {
  width: 110px;
  font-weight: 700;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.spec td:last-child {
  font-weight: 500;
}

.note {
  margin-top: 22px;
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
  max-width: 78ch;
}

/* ---------- download page ---------- */

.downloads {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.dl {
  padding: 30px 26px;
  display: grid;
  gap: 16px;
  align-content: start;
  text-align: center;
  justify-items: center;
}

.dl.recommended {
  border-color: var(--text-main);
  box-shadow: 6px 6px 0 var(--border-light);
}

.dl .os-mark {
  width: 58px;
  height: 58px;
  color: var(--text-main);
}

.dl h3 {
  font-size: 19px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.dl .meta {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 600;
  min-height: 20px;
}

.dl .btn {
  width: 100%;
}

.dl .alt {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.dl .alt a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 2px solid var(--border-light);
  padding-bottom: 1px;
}

.dl .alt a:hover {
  color: var(--text-main);
  border-color: var(--text-main);
}

.for-you {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  padding: 3px 12px;
  border-radius: 8px;
  background-color: var(--bg-inverted);
  color: var(--text-inverted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  white-space: nowrap;
}

.dl {
  position: relative;
}

.steps {
  display: grid;
  gap: 22px;
  grid-template-columns: repeat(3, 1fr);
}

.step {
  padding: 26px;
  display: grid;
  gap: 10px;
  align-content: start;
}

.step .os-line {
  display: flex;
  align-items: center;
  gap: 10px;
}

.step .os-line svg {
  width: 20px;
  height: 20px;
}

.step h3 {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.step p {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

code {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
  background-color: var(--hover-bg);
  border-radius: 6px;
  padding: 2px 6px;
  font-weight: 600;
  color: var(--text-main);
  /* Broken over two lines the tinted box looks like two separate ones. */
  white-space: nowrap;
}

.callout {
  padding: 26px 28px;
  display: flex;
  gap: 18px;
  align-items: flex-start;
}

.callout .icon {
  width: 26px;
  height: 26px;
  margin-top: 2px;
  color: var(--text-main);
}

.callout p {
  font-size: 15px;
  color: var(--text-muted);
  font-weight: 500;
}

.callout strong {
  color: var(--text-main);
}

/* ---------- closing call ---------- */

.closer {
  padding: 64px 48px;
  text-align: center;
  display: grid;
  justify-items: center;
  gap: 22px;
  background-color: var(--bg-inverted);
  border-color: var(--border-dark);
  box-shadow: 8px 8px 0 var(--border-dark);
  color: var(--text-inverted);
}

.closer h2 {
  color: var(--text-inverted);
  max-width: 18ch;
}

.closer p {
  color: #b5b5b5;
  max-width: 52ch;
  font-weight: 500;
}

.closer .btn {
  background-color: var(--bg-panel);
  color: var(--text-main);
  border-color: var(--border-light);
  box-shadow: 2px 2px 0 var(--border-light);
}

.closer img {
  width: 64px;
  height: 64px;
  border-radius: 16px;
}

/* ---------- footer ---------- */

.site-footer {
  border-top: 3px solid var(--border-light);
  background-color: var(--bg-panel);
  padding: 38px 0;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 34px;
  align-items: center;
}

.site-footer .brand {
  margin-right: auto;
  font-size: 14px;
}

.site-footer .brand img {
  width: 28px;
  height: 28px;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
}

.site-footer a {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--text-main);
}

.site-footer small {
  width: 100%;
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 500;
}

/* ---------- narrower windows ---------- */

@media (max-width: 960px) {
  .grid,
  .downloads,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .claims {
    grid-template-columns: repeat(2, 1fr);
  }

  .specs {
    grid-template-columns: 1fr;
  }

  .spotlight {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .spotlight.flip .spotlight-copy {
    order: 0;
  }

  .section {
    padding: 64px 0;
  }
}

/* Below this the header's own row is what overflows, not the content. */
@media (max-width: 420px) {
  .site-header .wrap {
    gap: 10px;
    padding: 0 14px;
  }

  .brand {
    font-size: 14px;
    letter-spacing: 0.1em;
    gap: 8px;
  }

  .site-nav {
    gap: 16px;
  }

  .brand img {
    width: 28px;
    height: 28px;
  }

  .theme-toggle {
    width: 34px;
    height: 34px;
  }

}

@media (max-width: 680px) {
  .grid,
  .downloads,
  .steps,
  .claims {
    grid-template-columns: 1fr;
  }

  .site-nav a:not(.always) {
    display: none;
  }

  /* A whole command no longer fits on one line, and overflowing the page is
     worse than a tinted box split across two. */
  code {
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .hero {
    padding-top: 52px;
  }

  .closer {
    padding: 44px 26px;
  }
}