/* Irris marketing site. Tokens are shared with the dashboard. */
:root {
  --ink: #0A0A0B;
  --paper: #F5F5F3;
  --graphite: #1C1C1F;
  --mist: #8A8A8F;
  --mist-strong: #5A5A60;      /* mist on paper, for small text that must pass contrast */
  --lime: #D7FF3D;
  --flag: #FF6A3D;
  --line-dark: rgba(245, 245, 243, 0.12);
  --line-light: rgba(10, 10, 11, 0.12);
  --sans: "Instrument Sans", ui-sans-serif, system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
  --nav-h: 56px;
  --gutter: clamp(16px, 4vw, 48px);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-snap-type: y proximity; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--lime); outline-offset: 3px; border-radius: 4px; }
.light :focus-visible, [data-tone="light"] :focus-visible { outline-color: var(--ink); }
::selection { background: var(--lime); color: var(--ink); }

.skip {
  position: fixed; left: 12px; top: -48px; z-index: 100;
  background: var(--lime); color: var(--ink); padding: 8px 14px; border-radius: 999px;
  font-weight: 600; text-decoration: none; transition: top 160ms var(--ease-out);
}
.skip:focus { top: 12px; }

/* ---------- Nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--nav-h);
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: 0 var(--gutter);
  color: var(--paper);
  transition: color 300ms ease, background-color 300ms ease;
}
.nav[data-tone="light"] { color: var(--ink); }
.nav.scrolled[data-tone="dark"] { background: rgba(10, 10, 11, 0.72); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); }
.nav.scrolled[data-tone="light"] { background: rgba(245, 245, 243, 0.78); backdrop-filter: saturate(1.4) blur(12px); -webkit-backdrop-filter: saturate(1.4) blur(12px); }
.wordmark {
  justify-self: start; display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none; font-weight: 600; letter-spacing: 0.32em; font-size: 15px; text-transform: uppercase;
  padding: 6px 2px;
}
.wordmark svg { width: 24px; height: 24px; }
.nav-links { display: flex; gap: 4px; }
.nav-links a, .nav-end a, .menu-btn {
  font: 500 14px/1 var(--sans); text-decoration: none; color: inherit;
  padding: 9px 14px; border-radius: 6px; background: transparent; border: 0; cursor: pointer;
  transition: background-color 200ms ease;
}
.nav-links a:hover, .nav-end a:hover, .menu-btn:hover { background: color-mix(in srgb, currentColor 10%, transparent); }
.nav-end { justify-self: end; display: flex; gap: 4px; align-items: center; }
.menu-btn { display: none; }

.sheet {
  position: fixed; inset: 0; z-index: 60; background: var(--paper); color: var(--ink);
  padding: calc(var(--nav-h) + 24px) var(--gutter) 32px;
  display: flex; flex-direction: column; gap: 4px;
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out), visibility 0s linear 220ms;
}
.sheet.open { opacity: 1; visibility: visible; transform: none; transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out); }
.sheet a { font-size: 22px; font-weight: 500; text-decoration: none; padding: 12px 8px; border-bottom: 1px solid var(--line-light); }
.sheet .close {
  position: absolute; top: 10px; right: var(--gutter); font: 500 14px var(--sans);
  padding: 9px 14px; border: 0; border-radius: 6px; background: rgba(10, 10, 11, 0.06); color: var(--ink); cursor: pointer;
}

/* ---------- Panels (one per screen) ---------- */
.panel {
  position: relative; min-height: 100vh; min-height: 100svh; overflow: hidden;
  display: grid; grid-template-rows: auto 1fr auto;
  scroll-snap-align: start;
  isolation: isolate;
  padding: 0 var(--gutter);
}
.panel[data-tone="dark"] { background: var(--ink); color: var(--paper); }
.panel.graphite { background: var(--graphite); }
.panel[data-tone="light"] { background: var(--paper); color: var(--ink); color-scheme: light; }
.visual { position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%; }
.panel::after {   /* keep copy readable over the scene */
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    linear-gradient(to bottom, var(--shade) 0%, transparent 34%),
    linear-gradient(to top, var(--shade) 0%, transparent 26%);
}
.panel[data-tone="dark"] { --shade: rgba(10, 10, 11, 0.82); }
.panel.graphite { --shade: rgba(28, 28, 31, 0.86); }
.panel[data-tone="light"] { --shade: rgba(245, 245, 243, 0.86); }
.panel.bare::after { display: none; }

.copy { padding-top: calc(var(--nav-h) + clamp(40px, 10vh, 112px)); text-align: center; max-width: 760px; margin: 0 auto; }
.eyebrow { font: 500 12px/1 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--mist); margin: 0 0 18px; }
[data-tone="light"] .eyebrow { color: var(--mist-strong); }
h1, h2 {
  margin: 0; font-weight: 500; letter-spacing: -0.025em; line-height: 1.04;
  font-size: clamp(38px, 5.6vw, 64px); text-wrap: balance;
}
.sub { margin: 14px auto 0; max-width: 34em; font-size: clamp(15px, 1.4vw, 17px); color: color-mix(in srgb, currentColor 72%, transparent); text-wrap: pretty; }

.stage { display: grid; place-items: center; padding: 32px 0; min-height: 0; }
.actions {
  display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
  padding: 24px 0 clamp(40px, 9vh, 88px);
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-width: 232px; height: 44px; padding: 0 24px;
  border-radius: 999px; font: 500 14px/1 var(--sans); letter-spacing: 0.01em; text-decoration: none; cursor: pointer;
  border: 0; transition: transform 160ms var(--ease-out), background-color 200ms ease, color 200ms ease;
}
.btn:active { transform: scale(0.97); }
.btn.primary { background: var(--paper); color: var(--ink); }
.btn.primary:hover { background: #fff; }
.btn.ghost { background: rgba(245, 245, 243, 0.14); color: var(--paper); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
.btn.ghost:hover { background: rgba(245, 245, 243, 0.22); }
[data-tone="light"] .btn.primary { background: var(--ink); color: var(--paper); }
[data-tone="light"] .btn.primary:hover { background: #000; }
[data-tone="light"] .btn.ghost { background: rgba(10, 10, 11, 0.07); color: var(--ink); }
[data-tone="light"] .btn.ghost:hover { background: rgba(10, 10, 11, 0.12); }

/* ---------- Procedure (It checks every step) ---------- */
.procedure {
  width: min(980px, 100%); display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(20px, 4vw, 56px);
  font-family: var(--mono); font-size: 13px; line-height: 1.5; align-items: start;
}
.pane-head { display: flex; justify-content: space-between; gap: 12px; color: var(--mist); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; padding-bottom: 12px; border-bottom: 1px solid var(--line-dark); margin-bottom: 8px; }
.steps { list-style: none; margin: 0; padding: 0; }
.steps li {
  display: grid; grid-template-columns: 22px 1fr auto; gap: 12px; align-items: center;
  padding: 9px 10px; border-radius: 4px; color: var(--mist);
  transition: color 300ms ease, background-color 300ms ease;
  position: relative;
}
.steps li .box { width: 14px; height: 14px; border: 1px solid currentColor; border-radius: 2px; position: relative; }
.steps li .state { font-size: 11px; letter-spacing: 0.08em; }
.steps li.done { color: var(--paper); }
.steps li.done .box { background: var(--lime); border-color: var(--lime); }
.steps li.done .box::after {
  content: ""; position: absolute; left: 4px; top: 1px; width: 4px; height: 8px;
  border: solid var(--ink); border-width: 0 2px 2px 0; transform: rotate(45deg);
}
.steps li.done .state { color: var(--lime); }
.steps li.now { color: var(--paper); background: rgba(215, 255, 61, 0.06); }
.steps li.now::before {   /* vision bracket around the current step */
  content: ""; position: absolute; inset: 0; pointer-events: none; border-radius: 2px;
  --c: var(--lime);
  background:
    linear-gradient(var(--c), var(--c)) top left / 10px 1.5px no-repeat,
    linear-gradient(var(--c), var(--c)) top left / 1.5px 10px no-repeat,
    linear-gradient(var(--c), var(--c)) top right / 10px 1.5px no-repeat,
    linear-gradient(var(--c), var(--c)) top right / 1.5px 10px no-repeat,
    linear-gradient(var(--c), var(--c)) bottom left / 10px 1.5px no-repeat,
    linear-gradient(var(--c), var(--c)) bottom left / 1.5px 10px no-repeat,
    linear-gradient(var(--c), var(--c)) bottom right / 10px 1.5px no-repeat,
    linear-gradient(var(--c), var(--c)) bottom right / 1.5px 10px no-repeat;
}
.steps li.now .state { color: var(--lime); }
.steps li.flag { color: var(--paper); }
.steps li.flag::before { --c: var(--flag); }
.steps li.flag .state { color: var(--flag); }
.record { list-style: none; margin: 0; padding: 0; min-height: 300px; }
.record li {
  display: grid; grid-template-columns: 72px 30px 1fr auto; gap: 10px; padding: 8px 0;
  border-bottom: 1px dashed var(--line-dark); color: var(--paper);
  animation: line-in 360ms var(--ease-out) both;
}
.record li .t, .record li .s { color: var(--mist); }
.record li .ok { color: var(--lime); }
.record li .bad { color: var(--flag); }
@keyframes line-in { from { opacity: 0; transform: translateY(6px); } }

/* ---------- Code (IRF and developers) ---------- */
.codebox {
  width: min(760px, 100%); background: rgba(10, 10, 11, 0.6); border: 1px solid var(--line-dark); border-radius: 10px;
  font: 400 13px/1.65 var(--mono); text-align: left; overflow: hidden;
}
[data-tone="light"] .codebox { background: #fff; border-color: var(--line-light); color: var(--ink); }
.codebar { display: flex; align-items: center; gap: 4px; padding: 8px; border-bottom: 1px solid var(--line-dark); }
[data-tone="light"] .codebar { border-color: var(--line-light); }
.codebar .label { margin-left: auto; padding-right: 8px; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--mist); }
[data-tone="light"] .codebar .label { color: var(--mist-strong); }
.tab {
  font: 500 12px/1 var(--mono); padding: 8px 12px; border-radius: 6px; border: 0; cursor: pointer;
  background: transparent; color: var(--mist); transition: background-color 200ms ease, color 200ms ease;
}
[data-tone="light"] .tab { color: var(--mist-strong); }
.tab[aria-selected="true"] { background: rgba(245, 245, 243, 0.1); color: var(--paper); }
[data-tone="light"] .tab[aria-selected="true"] { background: rgba(10, 10, 11, 0.07); color: var(--ink); }
.codebox pre { margin: 0; padding: 20px 22px; overflow-x: auto; white-space: pre; tab-size: 2; }
.codebox pre[hidden] { display: none; }
.codebox pre.fade { animation: code-in 320ms var(--ease-out) both; }
@keyframes code-in { from { opacity: 0; filter: blur(2px); } }
.k { color: var(--mist); }
.v { color: var(--paper); }
[data-tone="light"] .k { color: var(--mist-strong); }
[data-tone="light"] .v { color: var(--ink); }
.hl { color: var(--ink); background: var(--lime); padding: 0 3px; border-radius: 2px; }
.c { color: #6B6B70; }
.p { color: var(--lime); }
[data-tone="light"] .p { color: var(--ink); font-weight: 500; }

/* ---------- Final + footer ---------- */
.foot {
  display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: center;
  font-size: 12px; color: var(--mist); padding: 0 0 24px;
}
.foot a { text-decoration: none; }
.foot a:hover { color: var(--paper); }

/* ---------- Standard page ---------- */
.doc { background: var(--paper); color: var(--ink); color-scheme: light; padding: clamp(64px, 12vh, 140px) var(--gutter); scroll-snap-align: start; }
.doc.dark { background: var(--graphite); color: var(--paper); color-scheme: dark; }
.doc .wrap { max-width: 1120px; margin: 0 auto; }
.doc h2 { font-size: clamp(30px, 4vw, 48px); max-width: 16em; }
.doc .lede { font-size: clamp(16px, 1.5vw, 19px); max-width: 38em; margin: 18px 0 0; color: var(--mist-strong); }
.doc.dark .lede { color: var(--mist); }
.split { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 72px); margin-top: 56px; align-items: start; }
.fields { margin: 0; display: grid; grid-template-columns: 9.5em 1fr; border-top: 1px solid var(--line-light); }
.fields dt, .fields dd { margin: 0; padding: 12px 0; border-bottom: 1px solid var(--line-light); }
.fields dt { font: 500 13px/1.5 var(--mono); }
.fields dt .req { color: var(--ink); background: var(--lime); font-size: 10px; padding: 1px 5px; border-radius: 2px; margin-left: 6px; letter-spacing: 0.06em; vertical-align: 1px; }
.fields dd { font-size: 15px; color: #2B2B2F; }
.spec { width: 100%; border-collapse: collapse; margin-top: 48px; font-size: 15px; }
.spec th { text-align: left; font: 500 11px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--mist-strong); padding: 0 16px 14px 0; border-bottom: 1px solid var(--line-light); }
.spec td { padding: 16px 16px 16px 0; border-bottom: 1px solid var(--line-light); vertical-align: top; }
.spec td:first-child { font: 500 14px/1.5 var(--mono); white-space: nowrap; width: 1%; padding-right: 40px; }
.doc.dark .spec th { color: var(--mist); border-color: var(--line-dark); }
.doc.dark .spec td { border-color: var(--line-dark); }
.spec code, .fields code, .lede code { font-family: var(--mono); font-size: 0.9em; }
.steps-big { list-style: none; margin: 56px 0 0; padding: 0; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); counter-reset: n; }
.steps-big li { border-top: 1px solid var(--line-light); padding-top: 18px; font-size: 15px; color: #2B2B2F; }
.steps-big li::before { counter-increment: n; content: "0" counter(n); display: block; font: 500 13px var(--mono); color: var(--ink); margin-bottom: 14px; }
.doc .actions { justify-content: flex-start; padding: 40px 0 0; }

/* ---------- 404 ---------- */
.lost .copy { padding-top: calc(var(--nav-h) + 22vh); }

/* ---------- Small screens ---------- */
@media (max-width: 820px) {
  .nav { grid-template-columns: 1fr auto; }
  .nav-links { display: none; }
  .nav-end .signin { display: none; }
  .menu-btn { display: inline-block; }
  .procedure { grid-template-columns: 1fr; font-size: 12px; }
  .record { min-height: 0; }
  .record li { grid-template-columns: 62px 26px 1fr; }
  .record li .r { grid-column: 3; }
  .split { grid-template-columns: 1fr; }
  .steps-big { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .actions { flex-direction: column; align-items: stretch; gap: 12px; }
  .btn { min-width: 0; width: 100%; }
  .fields { grid-template-columns: 1fr; }
  .fields dt { border-bottom: 0; padding-bottom: 0; }
  .spec, .spec tbody, .spec tr, .spec td { display: block; width: 100%; }
  .spec thead { display: none; }
  .spec tr { border-bottom: 1px solid var(--line-light); padding: 14px 0; }
  .doc.dark .spec tr { border-color: var(--line-dark); }
  .spec td { border: 0; padding: 2px 0; }
  .spec td:first-child { width: auto; white-space: normal; }
  .steps-big { grid-template-columns: 1fr; }
  .codebox { font-size: 12px; }
  .codebox pre { padding: 16px; }
  .steps li { grid-template-columns: 16px 1fr auto; gap: 10px; padding: 8px 8px; }
  .steps li .state { font-size: 10px; letter-spacing: 0.04em; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

/* ---------- Bench camera inset (procedure) ---------- */
.inset { width: 100%; aspect-ratio: 16 / 7; border: 1px solid var(--line-dark); border-radius: 6px; margin-bottom: 18px; background: #101012; }
@media (max-width: 820px) { .inset { aspect-ratio: 16 / 8; } }