:root {
  --font-ui: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
    "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Monaco,
    "Cascadia Code", Consolas, monospace;

  --bg: #f5f5f7;
  --surface: #ffffff;
  --surface-2: #f0f0f3;
  --ink: #1d1d1f;
  --ink-2: #51515a;
  --ink-3: #6e6e73;
  --hairline: rgba(0, 0, 0, 0.1);
  --hairline-strong: rgba(0, 0, 0, 0.16);
  --accent: #5856d6;
  --accent-ink: #4b49c4;
  --accent-contrast: #ffffff;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06), 0 12px 32px rgba(0, 0, 0, 0.08);
  --deleted: #b23d3d;

  --gutter: 16px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1c1e;
    --surface: #2c2c2e;
    --surface-2: #242426;
    --ink: #f5f5f7;
    --ink-2: #c7c7cc;
    --ink-3: #a1a1a6;
    --hairline: rgba(255, 255, 255, 0.12);
    --hairline-strong: rgba(255, 255, 255, 0.2);
    --accent: #6e6cf0;
    --accent-ink: #9c9aff;
    --accent-contrast: #ffffff;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.5), 0 16px 40px rgba(0, 0, 0, 0.55);
    --deleted: #ff8a8a;
  }
}

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

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

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.021em;
  line-height: 1.1;
  font-weight: 700;
}

p {
  margin: 0;
}

a {
  color: var(--accent-ink);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code,
pre {
  font-family: var(--font-mono);
}

:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  width: 100%;
  max-width: 760px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: -60px;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--accent-contrast);
  padding: 10px 16px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  z-index: 10;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 0;
  text-decoration: none;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--hairline);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  position: sticky;
  top: 0;
  z-index: 5;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.brand:hover {
  text-decoration: none;
}

.brand__mark {
  width: 22px;
  height: 22px;
  color: var(--accent);
}

.brand__name {
  font-size: 17px;
}

.header-link {
  font-size: 15px;
  color: var(--ink-2);
}

/* Hero */
.hero {
  padding-top: clamp(40px, 9vw, 88px);
  padding-bottom: clamp(32px, 6vw, 56px);
}

.eyebrow {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--accent-ink);
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(34px, 7vw, 56px);
  letter-spacing: -0.03em;
  max-width: 15ch;
}

.lede {
  margin-top: 20px;
  font-size: clamp(18px, 2.4vw, 21px);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 60ch;
}

.cta {
  margin-top: 32px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: var(--accent-contrast);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: 13px 26px;
  border-radius: 980px;
  transition: filter 0.15s ease, transform 0.1s ease;
}

.btn:hover {
  filter: brightness(1.07);
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.cta__meta {
  font-size: 15px;
  color: var(--ink-3);
}

.cta__meta .dot {
  padding-inline: 6px;
}

.reqs {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.reqs li {
  font-size: 14px;
  color: var(--ink-2);
  background: var(--surface);
  border: 1px solid var(--hairline);
  padding: 5px 12px;
  border-radius: 980px;
}

/* Showcase window */
.showcase {
  padding-bottom: clamp(40px, 7vw, 72px);
}

.window {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.window__bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--hairline);
  background: var(--surface-2);
}

.traffic {
  display: inline-flex;
  gap: 7px;
}

.traffic i {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--hairline-strong);
}

.traffic i:nth-child(1) {
  background: #ff5f57;
}
.traffic i:nth-child(2) {
  background: #febc2e;
}
.traffic i:nth-child(3) {
  background: #28c840;
}

.window__title {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-3);
}

.window__body {
  display: grid;
  gap: 1px;
  background: var(--hairline);
  grid-template-columns: 1fr;
}

.panel {
  background: var(--surface);
  padding: 20px;
}

.panel__label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 14px;
}

.tree {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-2);
  white-space: pre;
  overflow-x: auto;
}

.tree__dir {
  color: var(--accent-ink);
  font-weight: 600;
}

.tree__file {
  color: var(--ink);
}

.chat {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.msg {
  font-size: 14.5px;
  line-height: 1.45;
  color: var(--ink);
  padding-left: 54px;
  text-indent: -54px;
}

.msg__time {
  display: inline-block;
  width: 42px;
  text-indent: 0;
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--ink-3);
}

.msg__who {
  font-weight: 600;
  margin-right: 6px;
}

.glyph {
  margin-right: 5px;
}

.msg--deleted s {
  color: var(--deleted);
  text-decoration-thickness: 1.5px;
}

.msg__tag {
  display: inline-block;
  text-indent: 0;
  margin-left: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--hairline);
  border-radius: 980px;
  padding: 1px 8px;
}

.window__cap {
  padding: 16px 20px;
  border-top: 1px solid var(--hairline);
  background: var(--surface-2);
  font-size: 14px;
  color: var(--ink-2);
}

/* Features */
.features {
  padding-block: clamp(24px, 5vw, 48px);
}

.features h2,
.install h2,
.disclosure h2 {
  font-size: clamp(24px, 4vw, 30px);
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.feature-list li {
  background: var(--surface);
  padding: 22px 20px;
}

.feature-list h3 {
  font-size: 18px;
  letter-spacing: -0.01em;
  margin-bottom: 7px;
}

.feature-list p {
  color: var(--ink-2);
  font-size: 15.5px;
}

/* Install steps */
.install {
  padding-block: clamp(24px, 5vw, 48px);
}

.steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.steps > li {
  counter-increment: step;
  position: relative;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  padding: 20px 20px 20px 66px;
}

.steps > li::before {
  content: counter(step);
  position: absolute;
  left: 20px;
  top: 20px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-contrast);
  font-size: 15px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.steps h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.steps p {
  color: var(--ink-2);
  font-size: 15.5px;
}

.advanced {
  margin-top: 14px;
  border-top: 1px solid var(--hairline);
  padding-top: 12px;
}

.advanced summary {
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-ink);
  width: fit-content;
}

.advanced summary:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
}

.advanced p {
  margin-top: 10px;
}

.code {
  margin: 10px 0 0;
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink);
}

:not(pre) > code {
  font-size: 0.9em;
  background: var(--surface-2);
  border: 1px solid var(--hairline);
  border-radius: 5px;
  padding: 1px 5px;
}

.note {
  margin-top: 20px;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: 15px;
  color: var(--ink-2);
}

.note__title {
  display: block;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 2px;
}

/* Disclosure */
.disclosure {
  padding-block: clamp(28px, 5vw, 52px);
}

.disclosure .wrap {
  border-top: 1px solid var(--hairline);
  padding-top: clamp(28px, 5vw, 48px);
}

.disclosure ul {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 12px;
}

.disclosure li {
  color: var(--ink-2);
  font-size: 15.5px;
  line-height: 1.5;
}

.disclosure strong {
  color: var(--ink);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--hairline);
  padding-block: 28px 40px;
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 20px;
}

.footer__brand {
  font-weight: 600;
  color: var(--ink-2);
  letter-spacing: -0.01em;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
}

.footer__links a {
  font-size: 15px;
  color: var(--ink-2);
}

/* Legal page */
.legal {
  padding-block: clamp(24px, 5vw, 44px) clamp(32px, 6vw, 56px);
}

.back {
  font-size: 15px;
  margin-bottom: 8px;
}

.back + .prose {
  margin-top: 16px;
}

.prose {
  max-width: 68ch;
}

.prose h1 {
  font-size: clamp(28px, 5vw, 38px);
  letter-spacing: -0.025em;
  margin-bottom: 8px;
}

.prose h2 {
  font-size: clamp(20px, 3vw, 24px);
  letter-spacing: -0.015em;
  margin-top: 36px;
  margin-bottom: 10px;
  padding-top: 20px;
  border-top: 1px solid var(--hairline);
}

.prose p {
  margin-top: 14px;
  color: var(--ink-2);
  font-size: 16.5px;
}

.prose ul {
  margin-top: 14px;
  padding-left: 22px;
  color: var(--ink-2);
  font-size: 16.5px;
}

.prose li {
  margin-top: 8px;
}

.prose a {
  word-break: break-word;
}

.prose + .back {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
}

/* 404 */
.notfound {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-block: 60px;
}

.notfound h1 {
  font-size: clamp(30px, 6vw, 44px);
  letter-spacing: -0.03em;
  margin-top: 12px;
}

.notfound .lede {
  margin-bottom: 28px;
}

/* Wider screens */
@media (min-width: 640px) {
  .window__body {
    grid-template-columns: 0.85fr 1.15fr;
  }

  .feature-list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}