/* The developer site: a quiet, neutral frame so each app's own brand is the colour on the page.
   Warm paper by day, ink by night; one indigo accent; system fonts (no font downloads, no third parties). */

:root {
  color-scheme: light dark;
  --bg: #FAF9F6; --surface: #FFFFFF; --raised: #F2F0EB; --line: #E4E0D8; --ink: #16151B; --muted: #5E5A66; --faint: #8C8894;
  --accent: #5A4BFF; --accent-ink: #4535EA; --on-accent: #FFFFFF;
  --coral: #FF5B3A; --sun: #FFC23D; --leaf: #17A673; --sky: #3D8BFD; --grape: #8B5CF6; --rose: #FF6F9A;
  --code-bg: #15141B; --code-ink: #E8E6EF; --code-line: #2A2833;
  --r-s: 10px; --r-m: 16px; --r-l: 28px;
  --shadow-1: 0 1px 2px rgb(22 21 27 / 6%), 0 2px 10px rgb(22 21 27 / 5%);
  --shadow-2: 0 2px 6px rgb(22 21 27 / 6%), 0 24px 60px rgb(22 21 27 / 12%);
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --wrap: 1180px; --read: 720px;
  --ease-out: cubic-bezier(.2, .8, .2, 1); --spring: cubic-bezier(.34, 1.56, .64, 1);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0E0D12; --surface: #16151C; --raised: #1E1C25; --line: #2B2934; --ink: #F1EFF6; --muted: #A6A2B1; --faint: #75717F;
    --accent: #8E80FF; --accent-ink: #A99FFF; --on-accent: #0E0D12;
    --code-bg: #0A090E; --code-line: #23212B;
    --shadow-1: 0 1px 2px rgb(0 0 0 / 40%); --shadow-2: 0 24px 60px rgb(0 0 0 / 45%);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 84px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.6 var(--sans); overflow-x: hidden;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg { max-width: 100%; height: auto; }
a { color: var(--accent-ink); text-underline-offset: 3px; text-decoration-thickness: 1.5px; }
h1, h2, h3, h4 { line-height: 1.1; letter-spacing: -0.025em; margin: 0 0 .45em; font-weight: 750; text-wrap: balance; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.015em; }
p { margin: 0 0 1em; text-wrap: pretty; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
code, kbd, pre { font-family: var(--mono); font-size: .9em; font-variant-ligatures: none; font-feature-settings: "liga" 0, "calt" 0; }
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: 20px; }
.narrow { max-width: var(--read); margin-inline: auto; padding-inline: 20px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: 12px; top: -60px; z-index: 50; background: var(--ink); color: var(--bg); padding: 8px 14px; border-radius: 10px; }
.skip:focus { top: 12px; }
.muted { color: var(--muted); }
.eyebrow { font: 650 .78rem/1 var(--sans); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }

/* header */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid transparent;
  transition: border-color .2s; }
.top.scrolled { border-bottom-color: var(--line); }
.top .wrap { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 750; font-size: 1.08rem; letter-spacing: -0.02em; }
.brand-mark { width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center; color: #fff;
  background: conic-gradient(from 210deg, var(--accent), var(--rose), var(--sun), var(--leaf), var(--sky), var(--accent));
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 25%); }
.brand-mark::after { content: ""; width: 10px; height: 10px; border-radius: 4px; background: #fff; box-shadow: 0 1px 3px rgb(0 0 0 / 20%); }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 600; font-size: .95rem; padding: 8px 12px; border-radius: 999px; transition: color .15s, background .15s; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); background: var(--raised); }
@media (max-width: 560px) { .top .wrap { gap: 10px; } .nav a { padding: 8px 9px; font-size: .9rem; } .brand-name { display: none; } }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border-radius: 999px;
  font: 650 .98rem/1 var(--sans); text-decoration: none; border: 1px solid transparent; cursor: pointer;
  transition: transform .18s var(--ease-out), background .18s, box-shadow .18s, color .18s; }
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--ink); color: var(--bg); }
.btn-primary:hover { box-shadow: 0 6px 20px rgb(22 21 27 / 22%); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--raised); }
.btn svg { width: 18px; height: 18px; }

/* sections */
.section { padding: clamp(48px, 6.5vw, 80px) 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 32px; flex-wrap: wrap; }
.section-head p { max-width: 560px; margin: 0; color: var(--muted); }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
.card { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-l); padding: 26px;
  box-shadow: var(--shadow-1); transition: transform .25s var(--ease-out), box-shadow .25s var(--ease-out), border-color .25s; }
a.card { color: inherit; text-decoration: none; display: block; }
a.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-2); border-color: color-mix(in srgb, var(--accent) 30%, var(--line)); }
.card h3 { margin-bottom: 6px; }
.card p { color: var(--muted); margin: 0; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 0; padding: 0; list-style: none; }
.chip { font: 600 .78rem/1 var(--sans); padding: 6px 10px; border-radius: 999px; background: var(--raised); color: var(--muted); }

/* footer */
.foot { border-top: 1px solid var(--line); padding: 44px 0 56px; color: var(--muted); font-size: .92rem; }
.foot .wrap { display: grid; gap: 24px; grid-template-columns: 1.4fr 1fr 1fr; }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--ink); }
.foot h4 { color: var(--ink); font-size: .9rem; letter-spacing: 0; margin-bottom: 10px; }
.foot ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.foot .legal { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 18px; font-size: .84rem; color: var(--faint); }
@media (max-width: 720px) { .foot .wrap { grid-template-columns: 1fr 1fr; } .foot .about { grid-column: 1 / -1; } }

/* page header for inner pages */
.page-head { padding: clamp(40px, 7vw, 80px) 0 clamp(20px, 4vw, 36px); }
.page-head p { color: var(--muted); font-size: 1.12rem; max-width: 640px; }

/* prose (blog posts, legal) */
.prose { font-size: 1.06rem; }
.prose h2 { font-size: 1.6rem; margin-top: 2em; }
.prose h3 { margin-top: 1.6em; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.1em; }
.prose li { margin: .3em 0; }
.prose img { border-radius: var(--r-m); border: 1px solid var(--line); }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.4em 0; }
.prose :not(pre) > code { background: var(--raised); padding: .12em .4em; border-radius: 6px; font-size: .88em; }
.prose .callout { border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 var(--r-m) var(--r-m) 0; padding: 14px 18px; margin: 0 0 1.2em; }
.prose .callout p:last-child { margin: 0; }
.prose .table-wrap { overflow-x: auto; margin: 0 0 1.2em; }
.prose table { border-collapse: collapse; width: 100%; font-size: .95rem; }
.prose th, .prose td { border-bottom: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
pre { background: var(--code-bg); color: var(--code-ink); border-radius: var(--r-m); padding: 18px 20px; overflow-x: auto; line-height: 1.55;
  font-size: .86rem; margin: 0 0 1.3em; border: 1px solid var(--code-line); tab-size: 2; }
pre code { font-size: inherit; }
.tok-c { color: #7F7A8E; font-style: italic; } .tok-s { color: #9FE3A6; } .tok-n { color: #FFC27A; } .tok-k { color: #B9A9FF; } .tok-f { color: #7CC7FF; }

/* post meta */
.post-meta { color: var(--faint); font-size: .92rem; margin-bottom: 8px; }
.post-list { display: grid; gap: 14px; }
.post-item h3 { font-size: 1.2rem; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

pre.has-copy { position: relative; }
pre .copy { position: absolute; top: 10px; right: 10px; font: 600 .75rem/1 var(--sans); color: var(--code-ink); background: rgb(255 255 255 / 8%);
  border: 1px solid rgb(255 255 255 / 12%); border-radius: 8px; padding: 7px 10px; cursor: pointer; opacity: 0; transition: opacity .15s; }
pre:hover .copy, pre .copy:focus-visible { opacity: 1; }
@media (hover: none) { pre .copy { opacity: 1; } }