/* ai.itisyou.app — calm technical system. No external fonts, no inline styles. */
:root {
  color-scheme: dark light;
  --bg: #0b0d10;
  --bg-2: #12161b;
  --fg: #e8ebef;
  --fg-2: #aeb6c0;
  --line: #2a323c;
  --accent: #6fb3ff;
  --focus: #ffd166;
  --grey: #4a525c;
  --green: #2f7f5f;
  --amber: #c9a227;
  --red: #7a2e2e;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f7f8fa; --bg-2: #ffffff; --fg: #14181d; --fg-2: #3f474f; --line: #d5dbe2; --accent: #1f5fbf; --focus: #b45309; --grey: #9aa3ad; }
}
* { box-sizing: border-box; }
html { font-family: var(--sans); line-height: 1.55; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); }
a { color: var(--accent); text-underline-offset: 0.15em; }
a:focus-visible, button:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
code { font-family: var(--mono); font-size: 0.92em; background: var(--bg-2); border: 1px solid var(--line); border-radius: 4px; padding: 0 0.3em; }
pre { background: var(--bg-2); border: 1px solid var(--line); border-radius: 6px; padding: 0.9rem 1rem; overflow-x: auto; }
pre code { border: 0; padding: 0; background: transparent; }
.skip { position: absolute; left: -999px; top: 0; background: var(--focus); color: #000; padding: 0.6rem 1rem; z-index: 10; font-weight: 600; }
.skip:focus { left: 0.5rem; top: 0.5rem; }
.top { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; align-items: center; justify-content: space-between; padding: 0.9rem clamp(1rem, 4vw, 2.5rem); border-bottom: 1px solid var(--line); background: var(--bg-2); }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; font-weight: 700; color: var(--fg); text-decoration: none; letter-spacing: 0.01em; }
.mark { width: 14px; height: 14px; border-radius: 3px; background: linear-gradient(135deg, var(--accent), var(--green)); }
.top nav { display: flex; flex-wrap: wrap; gap: 0.2rem 1rem; }
.top nav a { color: var(--fg-2); text-decoration: none; padding: 0.3rem 0.1rem; border-bottom: 2px solid transparent; }
.top nav a:hover { color: var(--fg); }
.top nav a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }
main { max-width: 68rem; margin: 0 auto; padding: 1.5rem clamp(1rem, 4vw, 2.5rem) 3rem; }
main:focus { outline: none; }
h1 { font-size: clamp(1.8rem, 4.5vw, 2.6rem); line-height: 1.15; margin: 0.4rem 0 0.8rem; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.25rem, 2.6vw, 1.6rem); margin: 2.4rem 0 0.6rem; }
.eyebrow { font-family: var(--mono); color: var(--fg-2); font-size: 0.85rem; margin: 0.5rem 0 0; }
.lede { font-size: 1.15rem; color: var(--fg); max-width: 60ch; }
.invariant { border-left: 3px solid var(--accent); padding: 0.4rem 0 0.4rem 1rem; color: var(--fg-2); max-width: 65ch; }
.status-line { color: var(--fg-2); }
.hero { padding-bottom: 1rem; border-bottom: 1px solid var(--line); }
section { margin-top: 1rem; }
.visual { display: grid; grid-template-columns: 1fr; gap: 1rem; margin: 1rem 0; }
@media (min-width: 52rem) { .visual { grid-template-columns: 1fr 1fr; align-items: start; } }
.scene { position: relative; border: 1px solid var(--line); border-radius: 8px; background: var(--bg-2); min-height: 20rem; display: none; }
.scene.ready { display: block; }
.scene canvas { display: block; width: 100%; height: 20rem; border-radius: 8px 8px 0 0; }
.scene-note { margin: 0; padding: 0.5rem 0.8rem; font-size: 0.85rem; color: var(--fg-2); border-top: 1px solid var(--line); }
.diagram { width: 100%; height: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--bg-2); }
.tablewrap { overflow-x: auto; margin: 1rem 0; }
table { border-collapse: collapse; width: 100%; min-width: 40rem; font-size: 0.95rem; }
caption { text-align: left; color: var(--fg-2); font-size: 0.85rem; padding: 0 0 0.4rem; }
th, td { text-align: left; vertical-align: top; padding: 0.55rem 0.7rem; border-top: 1px solid var(--line); }
thead th { border-top: 0; border-bottom: 2px solid var(--line); color: var(--fg-2); font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; }
tbody th { font-weight: 600; white-space: nowrap; }
td code { white-space: nowrap; }
.roles, .legend { display: grid; gap: 0.6rem; margin: 1rem 0; padding: 0; }
@media (min-width: 52rem) { .roles { grid-template-columns: 1fr 1fr; } }
.roles div, .legend div { border: 1px solid var(--line); border-radius: 6px; padding: 0.7rem 0.9rem; background: var(--bg-2); }
dt { font-weight: 600; }
dd { margin: 0.3rem 0 0; color: var(--fg-2); }
.laws, .waves { padding-left: 1.4rem; }
.laws li, .waves li { margin: 0.55rem 0; max-width: 70ch; }
.state { display: inline-block; white-space: nowrap; padding: 0.15rem 0.6rem; border-radius: 999px; font-size: 0.85rem; font-weight: 600; border: 1px solid var(--line); background: var(--bg-2); color: var(--fg-2); }
.state-not-started { color: var(--fg-2); border-color: var(--grey); }
.state-in-progress { color: var(--fg); border-color: var(--accent); }
.state-passed { color: #ffffff; background: var(--green); border-color: var(--green); }
.state-held-hardware, .state-held-owner { color: #1a1300; background: var(--amber); border-color: var(--amber); }
.hash { word-break: break-all; }
.empty { margin-top: 1rem; }
.foot { border-top: 1px solid var(--line); padding: 1.2rem clamp(1rem, 4vw, 2.5rem) 2rem; color: var(--fg-2); font-size: 0.9rem; background: var(--bg-2); }
.credit { margin: 0 0 0.3rem; color: var(--fg); font-weight: 600; }
.meta { margin: 0; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}