/* jrabbit.dev
   White page, true black type. The only color is the overlay's green: on the actions
   (same as Send in the widget), on the thing you point at, and on the 8-bit rabbit. */

:root {
  --paper: #ffffff;
  --ink: #000000;
  --ink-2: #5c5c5c;
  --wash: #f3f3f1;
  --line: #e4e4e2;
  --accent: #b4ff39;

  --sans: "Instrument Sans", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);

  /* Scale: 16 → 20 → 30 → 72+ (minor sixth-ish, fluid at the top) */
  --t-sm: 0.875rem;
  --t-base: 1.0625rem;
  --t-md: 1.25rem;
  --t-lg: clamp(1.5rem, 1.2rem + 1.2vw, 1.875rem);
  --t-xl: clamp(2.75rem, 1.4rem + 6.2vw, 6.5rem);
  --t-hero: clamp(2.375rem, 1.1rem + 3.7vw, 4.75rem);

  --gutter: clamp(20px, 4vw, 56px);
  --max: 1280px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 var(--t-base) / 1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
::selection { background: var(--accent); color: #000; }
h1, h2, h3, p, ol, ul, figure, pre { margin: 0; }
a { color: inherit; text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
code, kbd, pre { font-family: var(--mono); font-size: 0.875em; }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; border-radius: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

/* Layout: one column of rows; each row sets its title on the left third, its body on the right. */
.top, main > section, .foot {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 22px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; font-size: var(--t-md); text-decoration: none; letter-spacing: -0.01em; }
.brand svg { width: 28px; height: auto; display: block; }
@media (hover: hover) and (pointer: fine) {
  .brand:hover svg { animation: nudge 300ms steps(1); }
}
@keyframes nudge { 0% { translate: 0 0; } 25% { translate: 0 -2px; } 50% { translate: 0 -4px; } 75% { translate: 0 -2px; } }
.top nav { display: flex; gap: 24px; font-size: var(--t-sm); }
.top nav a { text-decoration: none; color: var(--ink-2); transition: color 150ms ease; }
.top nav a:hover { color: var(--ink); }

/* Link hover: the label rolls up and a copy (its text-shadow) rolls in from below. */
.roll { display: inline-block; overflow: hidden; vertical-align: bottom; line-height: 1.5; }
.roll > span { display: inline-block; }
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  .roll > span { text-shadow: 0 1.5em currentColor; transition: translate 380ms var(--ease-out); }
  .roll:hover > span { translate: 0 -1.5em; }
}

/* Background: faint ink cells drifting on slow noise, denser around the cursor. Drawn by demo.js. */
.texture { position: fixed; inset: 0; z-index: -1; width: 100%; height: 100%; pointer-events: none; }

/* Hero: the headline, then the rabbit running on a terminal-block track, hopping over bugs. */
.hero { padding-block: clamp(32px, 5vw, 72px) clamp(64px, 9vw, 120px); }
.stage {
  /* One rabbit cell. The runner is 16 cells wide, the track one cell tall. */
  --c: clamp(9px, 1.05vw, 15px);
  position: relative;
}
.hero h1 {
  position: relative;
  z-index: 1;
  font-size: var(--t-hero);
  font-weight: 500;
  line-height: 1.06;
  letter-spacing: -0.035em;
}
/* Four chunks; the breaks set two lines on desktop and three on phones. */
.hero h1 .line { display: inline-block; }
.hero h1 br.m { display: none; }

.runner {
  position: absolute;
  right: 0;
  bottom: calc(var(--c) * 1.25);
  width: calc(var(--c) * 16);
  z-index: 1;
}
/* Bugs ride the ground toward the rabbit. Full-bleed, so they come in from the window edge. */
.field {
  position: absolute;
  left: calc(50% - 50vw);
  width: 100vw;
  bottom: calc(var(--c) * 1.25);
  height: calc(var(--c) * 3);
  pointer-events: none;
}
.field svg { position: absolute; left: 0; bottom: 0; height: auto; display: block; color: var(--ink); }
/* Carrot leaves in the brand green; the root stays ink like the rabbit. */
.field .leaf { fill: var(--accent); }
.stage { touch-action: manipulation; }
/* One line under the track: the hint until you play, then the score. */
.score {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  margin: 0;
  font: 500 12px/1 var(--mono);
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}
.stage.playing .score { color: var(--ink); }
.stage.hit .bunny { animation: blink 900ms steps(1); }
@keyframes blink { 0%, 22%, 44%, 66% { opacity: 0; } 11%, 33%, 55%, 77% { opacity: 1; } }

/* The headline's key word sits in a jrabbit selection: green frame, four handles. */
.sel { position: relative; display: inline-block; margin-inline: 0.06em; }
.sel::before {
  content: "";
  position: absolute;
  inset: 0.13em -0.12em 0.04em;
  z-index: -1;
  border: 1.5px solid var(--accent);
  background: rgb(180 255 57 / 0.16);
  border-radius: 2px;
}
.sel i {
  position: absolute;
  width: clamp(5px, 0.1em, 7px);
  aspect-ratio: 1;
  translate: -50% -50%;
  background: var(--paper);
  border: 1px solid var(--ink);
}
.sel i:nth-of-type(1) { left: -0.12em; top: 0.13em; }
.sel i:nth-of-type(2) { left: calc(100% + 0.12em); top: 0.13em; }
.sel i:nth-of-type(3) { left: -0.12em; top: calc(100% - 0.04em); }
.sel i:nth-of-type(4) { left: calc(100% + 0.12em); top: calc(100% - 0.04em); }

.bunny { display: block; width: 100%; height: auto; overflow: visible; color: var(--ink); }
.bunny .f:not(.a) { visibility: hidden; }
.stage:is(.running, .entering) .bunny .a { animation: frame 360ms steps(1) infinite; translate: 0 -1px; }
.stage:is(.running, .entering) .bunny .b { animation: frame 360ms steps(1) -240ms infinite; }
.stage:is(.running, .entering) .bunny .c { animation: frame 360ms steps(1) -120ms infinite; }
/* In the air: legs stretched (frame c), no cycling. */
.stage.air .bunny .f { animation: none; translate: none; visibility: hidden; }
.stage.air .bunny .c { visibility: visible; }

.track {
  height: var(--c);
  /* Room for the rabbit (9 cells) plus its jump (6 cells). */
  margin-top: calc(var(--c) * 17);
  margin-inline: calc(50% - 50vw);
  overflow: hidden;
}
.ground {
  /* 16-cell tile of upper-half blocks, like a ▀ row in a terminal. */
  width: calc(100% + var(--c) * 16);
  height: 100%;
  translate: calc(var(--c) * -16) 0;
  will-change: translate;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 1'%3E%3Cpath fill='%23000' d='M.05 .09h.9v.41h-.9zM1.05 .09h.9v.41h-.9zM2.05 .09h.9v.41h-.9zM4.05 .09h.9v.41h-.9zM5.05 .09h.9v.41h-.9zM6.05 .09h.9v.41h-.9zM7.05 .09h.9v.41h-.9zM9.05 .09h.9v.41h-.9zM10.05 .09h.9v.41h-.9zM12.05 .09h.9v.41h-.9zM13.05 .09h.9v.41h-.9zM14.05 .09h.9v.41h-.9z'/%3E%3C/svg%3E")
    0 0 / calc(var(--c) * 16) var(--c) repeat-x;
}

.hero-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: clamp(36px, 4.4vw, 64px);
  max-width: 34rem;
  margin-left: auto;
  margin-right: clamp(0px, 8vw, 120px);
}
.lede { font-size: var(--t-md); line-height: 1.5; color: var(--ink); text-wrap: pretty; }
.cta { display: grid; gap: 12px; justify-items: start; }
.hint { font-size: var(--t-sm); color: var(--ink-2); max-width: 30rem; text-wrap: pretty; }

button { font: inherit; color: inherit; cursor: pointer; }
.primary {
  height: 48px;
  padding: 0 22px;
  border: 0;
  border-radius: 999px;
  background: var(--accent);
  color: #000;
  font-weight: 500;
  transition: scale 160ms var(--ease-out), background-color 150ms ease;
}
.primary:hover { background: #a6f526; --ring: #a6f526; }

/* Setup button: the agents it works with, the action, and a copy mark that turns into a check. */
.primary.setup { display: inline-flex; align-items: center; gap: 12px; height: 52px; padding: 0 18px 0 8px; }
.agents { display: flex; }
.agents > span {
  display: grid;
  place-items: center;
  width: 36px;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--paper);
  box-shadow: 0 0 0 2px var(--ring, var(--accent));
  transition: box-shadow 150ms ease;
}
.agents > span + span { margin-left: -10px; }
.agents svg { width: 18px; height: 18px; fill: var(--ink); }
.copy-mark { display: grid; width: 20px; height: 20px; }
.copy-mark svg { grid-area: 1 / 1; width: 100%; height: 100%; transition: opacity 160ms var(--ease-out), scale 160ms var(--ease-out); }
.done-icon, .setup[data-done] .copy-icon { opacity: 0; scale: 0.6; }
.setup[data-done] .done-icon { opacity: 1; scale: 1; }
.primary:active, .cmd button:active { scale: 0.97; }

.install { display: grid; grid-template-columns: minmax(0, 1fr); gap: 8px; min-width: 0; }
.clients { position: relative; display: flex; gap: 2px; }
.clients .pill {
  position: absolute; left: 0; top: 0; height: 30px; border-radius: 7px; background: var(--wash);
  transition: translate 220ms var(--ease-out), width 220ms var(--ease-out);
}
.clients .pill:not([data-ready]) { transition: none; }
.clients button { position: relative; }
.clients.has-pill button[aria-selected="true"] { background: none; }
.clients button {
  height: 30px;
  padding: 0 12px;
  border: 0;
  border-radius: 7px;
  background: none;
  color: var(--ink-2);
  font-size: var(--t-sm);
}
.clients button:hover { color: var(--ink); }
.clients button[aria-selected="true"] { background: var(--wash); color: var(--ink); font-weight: 500; }
.cmd {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 6px 6px 6px 16px;
  background: var(--wash);
  border-radius: 10px;
}
.cmd pre { flex: 1; min-width: 0; padding-block: 6px; overflow-x: auto; scrollbar-width: none; font-size: var(--t-sm); line-height: 1.55; }
.cmd pre code { font-size: inherit; }
.cmd button {
  flex: none;
  height: 32px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
  font-size: var(--t-sm);
  transition: scale 160ms var(--ease-out);
}
.cmd-note { font-size: var(--t-sm); color: var(--ink-2); }
.cmd-note code { padding: 0.1em 0.35em; background: var(--wash); border-radius: 4px; }

/* Rows */
.row {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  column-gap: var(--gutter);
  padding-block: clamp(56px, 7vw, 104px);
}
.row h2 {
  position: sticky;
  top: 32px;
  align-self: start;
  font-size: var(--t-lg);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 14ch;
  text-wrap: balance;
}
.body { display: grid; gap: 24px; max-width: 40rem; }
.body > p { text-wrap: pretty; }
.fine { font-size: var(--t-sm); color: var(--ink-2); }

/* How it works: a real sequence, so it is numbered. */
.steps {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px var(--gutter);
  counter-reset: step;
}
.steps li { counter-increment: step; display: grid; gap: 8px; align-content: start; }
.steps .glyph { --c: 4px; display: block; height: auto; margin-bottom: 10px; color: var(--ink); }
.steps .glyph .leaf { fill: var(--accent); }
.steps h3 { font-size: var(--t-md); font-weight: 500; letter-spacing: -0.01em; }
.steps h3::before { content: counter(step) "  "; color: var(--ink-2); font-variant-numeric: tabular-nums; white-space: pre; }
.steps p { color: var(--ink-2); max-width: 30rem; }

/* Code */
.code {
  padding: 20px 22px;
  border-radius: 12px;
  background: var(--wash);
  font-size: 0.8125rem;
  line-height: 1.65;
  overflow-x: auto;
  tab-size: 2;
}
.code code { font-size: inherit; }
.machine { background: var(--paper); box-shadow: inset 0 0 0 1px var(--line); white-space: pre-wrap; overflow-wrap: anywhere; }
.machine code[data-fresh] > span { animation: print 1ms calc(var(--i) * 22ms) both; }
@keyframes print { from { opacity: 0; } }
.loop { display: block; width: 100%; height: auto; aspect-ratio: 1280 / 800; background: var(--paper); }
.loop[hidden] { display: none; }
.file { display: grid; gap: 10px; }
.file figcaption { font-family: var(--mono); font-size: 0.8125rem; color: var(--ink-2); }
.body code:not(pre code) { padding: 0.1em 0.35em; background: var(--wash); border-radius: 4px; }

.facts { list-style: none; padding: 0; display: grid; gap: 0; max-width: 40rem; }
.facts li { padding-block: 14px; }
.facts li + li { border-top: 1px solid var(--line); }

/* FAQ */
.faq { max-width: 40rem; }
.faq details + details { border-top: 1px solid var(--line); }
.faq summary {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 24px;
  padding-block: 16px;
  cursor: pointer;
  list-style: none;
  font-weight: 500;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; color: var(--ink-2); font-weight: 400; transition: rotate 200ms var(--ease-out); }
.faq details[open] summary::after { rotate: 45deg; }
.faq details p { padding-bottom: 18px; color: var(--ink-2); max-width: 36rem; }
.faq .install { padding-bottom: 18px; }
.faq .install p { padding-bottom: 0; }
.faq code { padding: 0.1em 0.35em; background: var(--wash); border-radius: 4px; }

/* End: the one big mark on the page. Rabbit drawn in terminal blocks. */
.end, .foot {
  max-width: none;
  padding-inline: max(var(--gutter), calc((100% - var(--max)) / 2 + var(--gutter)));
}
.end { border-top: 1px solid var(--line); }
.end {
  display: grid;
  justify-items: start;
  gap: 32px;
  padding-block: clamp(80px, 12vw, 180px) clamp(72px, 9vw, 128px);
}
.hare { width: clamp(208px, 34vw, 416px); height: auto; display: block; color: var(--ink); }
/* Cells print in row by row, each one flashing green before it settles black. */
.hare.waiting rect { opacity: 0; }
.hare.printing rect { animation: cell 420ms var(--d) both; }
@keyframes cell {
  0% { opacity: 0; fill: var(--accent); }
  1% { opacity: 1; fill: var(--accent); }
  100% { opacity: 1; fill: currentColor; }
}
.end h2 { font-size: var(--t-xl); font-weight: 500; line-height: 0.98; letter-spacing: -0.035em; max-width: 14ch; text-wrap: balance; }

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px 32px;
  padding-block: 28px 96px;
  font-size: var(--t-sm);
  color: var(--ink-2);
}
.foot nav { display: flex; gap: 20px; }
.foot a { text-decoration: none; transition: color 150ms ease; }
.foot a:hover { color: var(--ink); }

@media (max-width: 760px) {
  .row { grid-template-columns: minmax(0, 1fr); row-gap: 24px; }
  .row h2 { position: static; }
  .stage { --c: 8px; }
  .steps { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .hero-body { margin-inline: 0; }
  .hero h1 br.m { display: inline; }
  .hero h1 br.d { display: none; }
  .top nav a[href="/start.md"] { display: none; }
  .foot { padding-bottom: 104px; }
}

/* Copy labels swap through a short blur so the two words never sit on top of each other. */
.label { display: inline-block; }

/* First load, one sequence: the headline rises line by line, the rabbit runs in, then the rest. */
@media (prefers-reduced-motion: no-preference) {
  .hero h1 .line { clip-path: inset(-0.3em -0.5em -0.22em -0.5em); }
  .hero h1 .line > span { display: block; animation: rise 1100ms var(--ease-out) calc(var(--i) * 110ms + 80ms) both; }
  .stage.live .runner { animation: run-in 1000ms var(--ease-out) 260ms both; }
  .hero-body { animation: settle 900ms var(--ease-out) 420ms both; }
  /* Once the words land, the frame is dragged out from its top-left corner, then the handles appear. */
  .sel::before { animation: marquee 520ms var(--ease-out) 1250ms both; }
  .sel i { animation: handle 220ms var(--ease-out) 1620ms both; }
}
/* Section titles decode in: each letter slot flips through a few of the title's own letters,
   then lands. The real text sits in .sr-only; slots keep the real glyph's width so nothing reflows. */
.coded .w { white-space: nowrap; }
.coded .ch { position: relative; color: transparent; }
.coded .ch.set { color: inherit; }
.coded .ch[data-g]::before { content: attr(data-g); position: absolute; left: 50%; translate: -50% 0; color: var(--ink-2); }

@keyframes marquee { from { clip-path: inset(0 100% 100% 0); } }
@keyframes handle { from { opacity: 0; scale: 0.6; } }
@keyframes rise { from { translate: 0 118%; } }
@keyframes run-in { from { translate: 62vw 0; } }
@keyframes settle { from { opacity: 0; translate: 0 14px; } }

/* ───────── Demo overlay (mirrors the real one) ───────── */

.jr {
  --bg: #0b0b0b; --fg: #f5f5f5; --muted: #8a8a8a;
  --shadow: 0 8px 24px rgba(0,0,0,.28), 0 0 0 1px rgba(255,255,255,.06);
  font: 12px/1.45 var(--mono);
  color: var(--fg);
}
.jr button { font: inherit; color: inherit; background: none; border: 0; transition: scale 160ms var(--ease-out); }
.jr button:not(:disabled):active { scale: 0.97; }
.jr :focus-visible { outline: 1px solid var(--accent); outline-offset: 2px; }

.jr-bar {
  position: fixed; right: 16px; bottom: 16px; z-index: 50;
  display: flex; align-items: center; gap: 2px; padding: 4px;
  background: var(--bg); border-radius: 10px; box-shadow: var(--shadow);
}
.jr-bar button { height: 28px; padding: 0 10px; border-radius: 7px; white-space: nowrap; }
.jr-bar button[aria-pressed="true"] { background: var(--fg); color: var(--bg); }
.jr-bar .send { background: var(--accent); color: #000; }
.jr-bar button:disabled { background: transparent; color: var(--muted); cursor: default; }
.jr-bar kbd { all: unset; color: var(--muted); margin-left: 6px; }
.jr-bar button[aria-pressed="true"] kbd { color: #6b6b6b; }

.jr-logo { display: flex; align-items: center; padding: 0 8px 0 6px; overflow: hidden; }
.jr-logo svg { width: 24px; height: auto; display: block; }
.jr-logo :is(.b, .c) { visibility: hidden; }
.jr-logo:is(.running, .dash, .enter) .a { animation: frame 420ms steps(1) infinite; translate: 0 -1px; }
.jr-logo:is(.running, .dash, .enter) .b { animation: frame 420ms steps(1) -280ms infinite; }
.jr-logo:is(.running, .dash, .enter) .c { animation: frame 420ms steps(1) -140ms infinite; }
@keyframes frame { 0% { visibility: visible; } 33.333% { visibility: hidden; } }
.jr-logo.dash svg { animation: dash 700ms; }
@keyframes dash {
  0% { translate: 0; animation-timing-function: cubic-bezier(.5, 0, .75, 0); }
  45% { translate: -40px; }
  45.01% { translate: 40px; animation-timing-function: var(--ease-out); }
  100% { translate: 0; }
}
/* First load: the rabbit runs in from the right edge of the bar, once. */
.jr-logo.enter svg { animation: enter 900ms var(--ease-out) 300ms both; }
@keyframes enter { from { translate: 40px; } }

.jr-hover {
  position: absolute; z-index: 40; pointer-events: none;
  border: 1.5px solid var(--accent); background: rgba(180,255,57,.12); border-radius: 2px;
}
.jr-hover span {
  position: absolute; left: -1.5px; bottom: 100%; margin-bottom: 4px; padding: 2px 6px;
  background: var(--bg); color: var(--fg); border-radius: 4px; white-space: nowrap;
}
.jr-hover[data-inside] span { bottom: auto; top: 4px; left: 4px; margin: 0; }

.jr-marker {
  position: absolute; z-index: 45; min-width: 20px; height: 20px; padding: 0 5px;
  display: grid; place-items: center; translate: -50% -50%;
  background: var(--bg); color: var(--fg); border: 1.5px solid var(--accent); border-radius: 10px;
  font-size: 11px; cursor: default;
  transition: scale 200ms var(--ease-out), opacity 200ms var(--ease-out);
}
@starting-style { .jr-marker { scale: 0.6; opacity: 0; } }
.jr-marker[data-status="sent"] { border-color: var(--fg); }

.jr-composer {
  position: absolute; z-index: 55; width: min(300px, calc(100vw - 32px)); padding: 10px;
  background: var(--bg); border-radius: 10px; box-shadow: var(--shadow);
  transition: opacity 150ms var(--ease-out), translate 150ms var(--ease-out);
}
@starting-style { .jr-composer { opacity: 0; translate: 0 4px; } }
.jr-composer .target { color: var(--muted); margin-bottom: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.jr-composer textarea {
  display: block; width: 100%; min-height: 64px; resize: vertical; padding: 8px;
  background: rgba(255,255,255,.06); color: var(--fg); border: 0; border-radius: 6px;
  font: inherit;
}
.jr-composer textarea::placeholder { color: var(--muted); }
.jr-composer .actions { display: flex; justify-content: space-between; align-items: center; margin-top: 8px; color: var(--muted); }
.jr-composer .add { height: 26px; padding: 0 10px; border-radius: 6px; background: var(--accent); color: #000; }
.jr-composer .add:disabled { opacity: .4; cursor: default; }

html.jr-pointing, html.jr-pointing * { cursor: crosshair !important; }
html.jr-pointing .jr, html.jr-pointing .jr * { cursor: default !important; }
html.jr-pointing .jr button { cursor: pointer !important; }

@media (max-width: 760px) {
  .jr-bar kbd { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .jr-logo:is(.running, .dash, .enter) :is(.a, .b, .c) { animation: none; translate: none; }
  .jr-logo:is(.dash, .enter) svg { animation: none; }
  .jr-marker, .jr-composer, .machine code { transition: none; animation: none; }
  .faq summary::after, .clients .pill { transition: none; }
  .brand svg { animation: none !important; }
  .stage .bunny :is(.a, .b, .c) { animation: none; translate: none; }
}