/*
  AI Operator — the site's one stylesheet. Tokens and rules: internal-ai-knowledgebase/website/DesignSystem.md
  (palette and type are owned by the brand guide it points at). Dark always: there is no light mode.
*/
@font-face { font-family: "Inter"; src: url("../fonts/InterVariable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }

:root {
  --ink: #0b0b0f; --panel: #131319; --edge: #26262f; --text: #f2f2f7; --dim: #8a8a99;
  --pink: #ff3d76; --green: #38d39f; --violet: #9d8cff; --amber: #f5b544;
  --sans: "Inter", -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --wrap: 1080px; --read: 680px; --gutter: 20px; --radius: 18px;
}

* { box-sizing: border-box; }
html { background: var(--ink); color-scheme: dark; }
body { margin: 0; background: var(--ink); color: var(--text); font-family: var(--sans); font-size: 18px; line-height: 1.6;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg, video { max-width: 100%; height: auto; display: block; }
a { color: var(--text); text-decoration-color: var(--pink); text-underline-offset: 3px; text-decoration-thickness: 2px; }
a:hover { color: var(--pink); }
:focus-visible { outline: 2px solid var(--pink); outline-offset: 3px; border-radius: 4px; }
::selection { background: var(--pink); color: var(--ink); }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.read { max-width: var(--read); margin: 0 auto; padding: 0 var(--gutter); }

/* Kicker: anything the machine says is mono. */
.kicker { font-family: var(--mono); font-size: 13px; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; color: var(--dim); margin: 0 0 14px; }
.kicker.pink { color: var(--pink); }
.mono { font-family: var(--mono); }
.dim { color: var(--dim); }

h1, h2, h3 { font-weight: 800; letter-spacing: -.025em; line-height: 1.08; margin: 0 0 18px; }
h1 { font-size: clamp(40px, 7vw, 72px); }
h2 { font-size: clamp(28px, 4.2vw, 42px); }
h3 { font-size: 22px; letter-spacing: -.015em; line-height: 1.25; }
p { margin: 0 0 18px; }
.lead { font-size: clamp(19px, 2.4vw, 23px); color: #d4d4de; max-width: 640px; }

/* Header */
.site-head { border-bottom: 1px solid var(--edge); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 800; letter-spacing: -.02em; }
.brand img { width: 34px; height: 34px; }
.brand small { font-family: var(--mono); font-weight: 600; font-size: 12px; color: var(--dim); letter-spacing: .08em; }
.nav { display: flex; gap: 22px; font-size: 15px; }
.nav a { text-decoration: none; color: var(--dim); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }

/* Sections */
.section { padding: 72px 0; border-bottom: 1px solid var(--edge); }
.section:last-of-type { border-bottom: 0; }
.hero { padding: 88px 0 72px; }
.hero h1 .accent { color: var(--pink); }
.cursor { display: inline-block; width: .5em; height: .9em; background: var(--green); vertical-align: -.08em; margin-left: .12em; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .cursor { animation: none; } }

.panel { background: var(--panel); border: 1px solid var(--edge); border-radius: var(--radius); padding: 28px; }
.grid { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.step .n { font-family: var(--mono); color: var(--violet); font-size: 13px; font-weight: 700; letter-spacing: .1em; }
.step h3 { margin-top: 10px; }
.step p { color: var(--dim); font-size: 16px; margin: 0; }

.chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 26px 0 0; padding: 0; list-style: none; }
.chips li { font-family: var(--mono); font-size: 13px; font-weight: 700; letter-spacing: .06em; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--edge); color: var(--text); }

.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; padding: 13px 20px; border-radius: 12px;
  background: var(--text); color: var(--ink); text-decoration: none; border: 0; cursor: pointer; }
.btn:hover { background: var(--pink); color: var(--ink); }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--edge); }
.btn.ghost:hover { border-color: var(--pink); color: var(--pink); }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* Posts list */
.posts { list-style: none; margin: 0; padding: 0; }
.posts li { padding: 22px 0; border-bottom: 1px solid var(--edge); }
.posts li:first-child { padding-top: 0; }
.posts a { text-decoration: none; }
.posts h3 { margin: 6px 0 6px; }
.posts p { color: var(--dim); font-size: 16px; margin: 0; }

/* Who wrote it: Simon (a human) or the AI. The category decides (DesignSystem.md § Bylines). */
.byline { display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; padding: 6px 11px; border-radius: 999px; border: 1px solid var(--edge); }
.byline.human { color: var(--amber); border-color: rgba(245,181,68,.45); }
.byline.ai { color: var(--violet); border-color: rgba(157,140,255,.45); }
.byline-note { font-size: 15px; color: var(--dim); margin-top: 12px; }

/* Article */
.article { padding: 64px 0 40px; }
.article h1 { font-size: clamp(34px, 5.4vw, 54px); margin-top: 18px; }
.meta { font-family: var(--mono); font-size: 13px; color: var(--dim); margin-bottom: 36px; }
.prose { font-size: 19px; line-height: 1.7; }
.prose h2 { font-size: 30px; margin-top: 46px; }
.prose h3 { margin-top: 32px; }
.prose ul, .prose ol { padding-left: 1.2em; margin: 0 0 18px; }
.prose li { margin-bottom: 6px; }
.prose blockquote { margin: 28px 0; padding: 4px 0 4px 20px; border-left: 3px solid var(--pink); color: #d4d4de; }
.prose code { font-family: var(--mono); font-size: .88em; background: var(--panel); border: 1px solid var(--edge); padding: 2px 6px; border-radius: 6px; color: var(--violet); }
.prose pre { background: var(--panel); border: 1px solid var(--edge); border-radius: 12px; padding: 18px; overflow-x: auto; font-size: 15px; }
.prose pre code { background: none; border: 0; padding: 0; }
.prose img, .prose figure { margin: 28px 0; border-radius: 12px; }
.prose figcaption { font-size: 14px; color: var(--dim); margin-top: 8px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 16px; margin: 0 0 18px; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--edge); }
.prose hr { border: 0; border-top: 1px solid var(--edge); margin: 40px 0; }

/* Footer */
.site-foot { border-top: 1px solid var(--edge); padding: 44px 0 56px; color: var(--dim); font-size: 15px; }
.site-foot .wrap { display: grid; gap: 22px; grid-template-columns: 1fr auto; align-items: start; }
.site-foot a { color: var(--dim); }
.site-foot a:hover { color: var(--text); }
.social { display: flex; flex-wrap: wrap; gap: 16px; list-style: none; margin: 0; padding: 0; }

@media (max-width: 640px) {
  body { font-size: 17px; }
  .nav { gap: 14px; font-size: 14px; }
  .brand small { display: none; }
  .section { padding: 52px 0; }
  .hero { padding: 56px 0 48px; }
  .site-foot .wrap { grid-template-columns: 1fr; }
  .panel { padding: 22px; }
}