:root {
  --bg: #070d17;
  --bg-raised: #0c1628;
  --border: #1b2b44;
  --text: #e7edf5;
  --muted: #8d9cb3;
  --accent: #50d8e4;
  --accent-strong: #36a8be;
  --accent-ink: #04141c;
  --shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.8);
  --radius: 10px;
  --wrap: 1080px;
  --wrap-wide: 1200px;
  --gutter: 16px;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f5f7fa;
    --bg-raised: #ffffff;
    --border: #d9e0ea;
    --text: #0c1d34;
    --muted: #4f607a;
    --accent: #0e7c8e;
    --accent-strong: #0a6474;
    --accent-ink: #ffffff;
    --shadow: 0 30px 70px -35px rgba(12, 29, 52, 0.45);
    color-scheme: light;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

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

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

.mono,
code,
kbd,
pre {
  font-family: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

.wrap {
  width: 100%;
  max-width: calc(var(--wrap) + 2 * var(--gutter));
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.wrap.wide {
  max-width: calc(var(--wrap-wide) + 2 * var(--gutter));
}

/* Navigation */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 56px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
}

.brand img {
  border-radius: 6px;
}

.nav nav {
  display: flex;
  align-self: stretch;
  gap: 22px;
  font-size: 15px;
}

.nav nav a {
  position: relative;
  display: flex;
  align-items: center;
  color: var(--muted);
  text-decoration: none;
  transition: color 150ms ease;
}

.nav nav a:hover,
.nav nav a.is-active {
  color: var(--text);
}

/* Accent bar sitting on the nav's bottom border under the current section. */
.nav nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  border-radius: 2px 2px 0 0;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 200ms ease;
}

.nav nav a.is-active::after {
  transform: scaleX(1);
}

/* Hero */

.hero {
  padding: 88px 0 48px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h1 {
  max-width: 16ch;
  font-size: clamp(38px, 6vw, 64px);
}

h2 {
  font-size: clamp(26px, 3.4vw, 34px);
}

h3 {
  font-size: 17px;
  letter-spacing: -0.01em;
}

.lede {
  max-width: 60ch;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 19px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  height: 44px;
  padding: 0 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-raised);
  color: var(--text);
  font-weight: 500;
  text-decoration: none;
}

.button:hover {
  border-color: var(--accent);
  color: var(--text);
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--accent-ink);
}

.button.primary:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
  color: var(--accent-ink);
}

.note {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 14px;
}

/* Screenshots: a thin frame with viewfinder corners, taken from the app icon. */

.shot {
  position: relative;
  display: block;
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #000;
  box-shadow: var(--shadow);
}

.shot img,
.shot video {
  width: 100%;
  border-radius: calc(var(--radius) - 1px);
}

.shot::before,
.shot::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  border: 2px solid var(--accent);
  pointer-events: none;
}

.shot::before {
  top: -8px;
  left: -8px;
  border-right: 0;
  border-bottom: 0;
  border-top-left-radius: 4px;
}

.shot::after {
  right: -8px;
  bottom: -8px;
  border-left: 0;
  border-top: 0;
  border-bottom-right-radius: 4px;
}

a.shot:hover {
  border-color: var(--accent);
}

.hero-shot {
  margin-top: 64px;
}

/* Sections */

section[id] {
  scroll-margin-top: 56px;
}

.section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.section-head {
  max-width: 62ch;
  margin-bottom: 36px;
}

.section-head p:not(.eyebrow) {
  margin: 12px 0 0;
  color: var(--muted);
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  gap: 56px;
  align-items: center;
}

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

.feature:nth-child(even) {
  grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
}

.feature:nth-child(even) .feature-text {
  order: 2;
}

.feature-text p:not(.eyebrow) {
  margin: 14px 0 0;
  color: var(--muted);
}

.feature-text .caption {
  font-size: 13px;
}

/* Theme comparison */

.compare {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  background: #000;
}

.compare img {
  width: 100%;
}

.compare-top {
  position: absolute;
  inset: 0;
  clip-path: inset(0 calc(100% - var(--pos)) 0 0);
}

.compare-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--pos);
  width: 2px;
  margin-left: -1px;
  background: var(--accent);
  pointer-events: none;
}

.compare-handle::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  background: var(--bg);
}

.compare input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
}

.compare:has(input:focus-visible) {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

/* Feature grid */

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--border);
  overflow: hidden;
}

.grid li {
  padding: 26px 24px;
  background: var(--bg-raised);
}

.grid p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
}

/* Controls table */

.table-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

th,
td {
  padding: 13px 20px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

tr:last-child th,
tr:last-child td {
  border-bottom: 0;
}

th {
  width: 40%;
  background: var(--bg-raised);
  font-weight: 500;
}

td {
  color: var(--muted);
}

kbd {
  display: inline-block;
  min-width: 1.6em;
  padding: 1px 6px;
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
}

/* Downloads */

.downloads {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.download {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-raised);
  color: var(--text);
  text-decoration: none;
}

.download:hover {
  border-color: var(--accent);
  color: var(--text);
}

.download-os {
  font-size: 19px;
  font-weight: 600;
}

.download-file {
  color: var(--muted);
  font-size: 13px;
}

.after-downloads {
  margin: 28px 0 0;
  color: var(--muted);
}

pre {
  margin: 12px 0 0;
  padding: 16px 20px;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-raised);
  font-size: 14px;
}

/* Footer */

.footer {
  padding: 40px 0 56px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 14px;
}

.footer-inner p {
  margin: 0 0 6px;
}

.muted {
  opacity: 0.75;
}

/* Narrow screens */

@media (max-width: 900px) {
  .feature,
  .feature:nth-child(even) {
    grid-template-columns: minmax(0, 1fr);
    gap: 28px;
  }

  .feature:nth-child(even) .feature-text {
    order: 0;
  }

  .feature + .feature {
    margin-top: 64px;
  }

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

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  .hero {
    padding: 56px 0 32px;
  }

  .hero-shot {
    margin-top: 40px;
  }

  .nav nav {
    gap: 14px;
    font-size: 14px;
  }

  .nav nav a[href="#controls"] {
    display: none;
  }

  .section {
    padding: 56px 0;
  }

  th {
    width: 45%;
  }

  th,
  td {
    padding: 11px 14px;
  }

  .shot::before,
  .shot::after {
    width: 14px;
    height: 14px;
  }

  .shot::before {
    top: -5px;
    left: -5px;
  }

  .shot::after {
    right: -5px;
    bottom: -5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .nav nav a,
  .nav nav a::after {
    transition: none;
  }
}