/* kittui documentation site.
   Direction: neon glass on the cell grid. The page sits on a faint 1:2 character-cell
   grid like a terminal; panels are translucent glass with neon strokes in kittui's own
   panel tones (assistant cyan, tool violet, user mint, plus pink), and section headings
   carry a block cursor. Unbounded for display, Instrument Sans for reading, Geist Mono
   for code and labels.

   Tones are shared with scripts/site/figures.py and scripts/site/scenes.py.          */

@font-face { font-family: "Unbounded"; src: url("fonts/unbounded.woff2") format("woff2"); font-weight: 500 800; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("fonts/instrument-sans.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }
@font-face { font-family: "Instrument Sans"; src: url("fonts/instrument-sans-italic.woff2") format("woff2"); font-weight: 400 600; font-style: italic; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("fonts/geist-mono.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }

:root {
  --ground: #080a12;
  --deep: #0c0f1c;
  --glass: rgba(150, 170, 255, 0.045);
  --line: #232a42;
  --text: #e4e8f6;
  --text-2: #b4bbd4;
  --text-3: #8d95b3;
  --cyan: #00d8ff;
  --pink: #ff5d8f;
  --violet: #b48cff;
  --mint: #7cf0c8;
  --tone: var(--cyan);
  --link: #6fe6ff;
  --display: "Unbounded", "Arial Black", system-ui, sans-serif;
  --body: "Instrument Sans", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --measure: 45rem;
  --cell-w: 12px;
  --cell-h: 24px;
}
body[data-tone="pink"] { --tone: var(--pink); }
body[data-tone="violet"] { --tone: var(--violet); }
body[data-tone="mint"] { --tone: var(--mint); }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-padding-top: 1rem; background: var(--ground); }
body {
  margin: 0; color: var(--text); font: 400 1.06rem/1.64 var(--body);
  background-color: var(--ground);
  background-image:
    linear-gradient(rgba(140, 160, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 160, 255, 0.035) 1px, transparent 1px);
  background-size: var(--cell-w) var(--cell-h);
}
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; }
strong, b { font-weight: 650; color: #fff; }
em { color: #fff; }
code, kbd, samp { font-family: var(--mono); font-size: 0.86em; }
:not(pre) > code { background: rgba(150, 170, 255, 0.08); border: 1px solid var(--line); border-radius: 4px; padding: 0.04em 0.32em; color: #f0f3ff; overflow-wrap: anywhere; }
code.nb { white-space: nowrap; }
a > code { color: inherit; }
kbd { border: 1px solid #3a4366; border-bottom-width: 2px; border-radius: 4px; padding: 0 0.3em; background: var(--deep); }
.skip { position: absolute; left: -999px; top: 0.5rem; background: var(--cyan); color: #000; padding: 0.5rem 0.8rem; z-index: 10; font-weight: 700; }
.skip:focus { left: 0.5rem; }

/* ---------------------------------------------------------------- bar */
.bar { position: relative; border-bottom: 1px solid var(--line); background: rgba(8, 10, 18, 0.86); }
.bar::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 1px; background: linear-gradient(90deg, var(--cyan), var(--violet) 45%, var(--pink) 75%, transparent); opacity: 0.8; }
.bar-in { display: flex; align-items: center; gap: 1.6rem; flex-wrap: wrap; max-width: 78rem; margin: 0 auto; padding: 0.9rem 2rem; }
.brand { display: inline-flex; align-items: center; gap: 0.65rem; color: #fff; text-decoration: none; font: 600 1.15rem/1 var(--display); letter-spacing: 0.01em; }
.brand b { color: var(--cyan); font-weight: 700; }
.mark { width: 1.05rem; height: 1.6rem; border-radius: 3px; background: linear-gradient(180deg, var(--cyan), var(--violet)); box-shadow: 0 0 14px rgba(0, 216, 255, 0.55); }
.nav { display: flex; flex-wrap: wrap; align-items: center; gap: 0.3rem 1.25rem; margin-left: auto; }
.nav a { color: var(--text-2); text-decoration: none; font-weight: 600; font-size: 0.95rem; padding: 0.25rem 0; border-bottom: 2px solid transparent; }
.nav a:hover { color: #fff; }
.nav a[aria-current="page"] { color: #fff; border-bottom-color: var(--tone); }
.nav a.live { color: #061018; background: var(--mint); border-radius: 999px; padding: 0.28rem 0.85rem; border: 0; box-shadow: 0 0 16px rgba(124, 240, 200, 0.35); }
.nav a.live:hover { background: #a5f7dc; }

/* ---------------------------------------------------------------- layout */
.page { display: grid; grid-template-columns: 12.5rem minmax(0, 1fr); gap: 3rem; max-width: 78rem; margin: 0 auto; padding: 0 2rem; }
.rail { position: sticky; top: 0; align-self: start; max-height: 100vh; overflow-y: auto; padding: 2.8rem 0 2rem; scrollbar-width: thin; }
.rail p { margin: 0 0 0.7rem; font: 600 0.72rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3); }
.rail ol { list-style: none; padding: 0; margin: 0; border-left: 1px solid var(--line); }
.rail li { margin: 0; }
.rail a { display: block; padding: 0.3rem 0 0.3rem 0.9rem; margin-left: -1px; color: var(--text-3); text-decoration: none; font-size: 0.92rem; line-height: 1.35; border-left: 2px solid transparent; }
.rail a:hover { color: var(--text); }
.rail a.on { color: #fff; border-left-color: var(--tone); }
main { min-width: 0; padding: 2.6rem 0 5rem; }
main > * { max-width: var(--measure); }
main > figure.fig, main > .cards, main > .wide, main > .table.wide, main > .hero-img, main > .demos { max-width: 62rem; }

/* ---------------------------------------------------------------- type */
h1 { font: 700 clamp(2.1rem, 4.3vw, 3.4rem)/1.08 var(--display); letter-spacing: -0.02em; margin: 0.5rem 0 1.1rem; text-wrap: balance; color: #fff; }
.kicker { margin: 0; font: 600 0.76rem/1 var(--mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--tone); }
h2 { position: relative; font: 650 1.42rem/1.25 var(--display); letter-spacing: -0.005em; margin: 3.6rem 0 1rem; padding-left: 1.35rem; color: #fff; }
h2::before { content: ""; position: absolute; left: 0; top: 0.1em; width: 0.62rem; height: 1.15em; border-radius: 2px; background: var(--tone); box-shadow: 0 0 12px var(--tone); }
h3 { font: 650 1.14rem/1.3 var(--body); margin: 2.2rem 0 0.5rem; color: #fff; }
p, ul, ol, dl { margin: 0 0 1.05rem; }
ul, ol { padding-left: 1.3rem; }
li { margin: 0.28rem 0; }
li::marker { color: var(--tone); }
.lede { font-size: 1.24rem; line-height: 1.55; color: var(--text-2); margin-bottom: 1.7rem; }
.lede strong { color: #fff; }
dl.defs { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 0.55rem 1.4rem; }
dl.defs dt { font-weight: 650; color: #fff; }
dl.defs dd { margin: 0; color: var(--text-2); }

/* ---------------------------------------------------------------- code */
pre {
  position: relative; margin: 1.2rem 0 1.5rem; padding: 1rem 1.15rem; overflow-x: auto; background: var(--deep); color: #dfe4f7;
  border: 1px solid var(--line); border-radius: 10px; font: 400 0.84rem/1.62 var(--mono); scrollbar-width: thin; tab-size: 2;
}
pre code { font: inherit; background: none; border: 0; padding: 0; color: inherit; white-space: pre-wrap; overflow-wrap: break-word; }
pre .ln { display: block; padding-left: 2ch; text-indent: -2ch; }
pre .p { color: #fff; }
pre .p::before { content: "$ "; color: var(--tone); font-weight: 700; }
pre .o { color: #c3c9de; }
pre .c { color: var(--text-3); font-style: italic; }
pre .k { color: var(--cyan); }
pre .s { color: var(--mint); }
pre .y { color: var(--pink); }
pre .v { color: var(--violet); }
pre var { font-style: italic; color: #ffd27a; }
pre[data-label] { padding-top: 2.05rem; }
pre[data-label]::before { content: attr(data-label); position: absolute; top: 0.6rem; left: 1.15rem; font: 600 0.68rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3); }
pre[data-scroll-more], .table[data-scroll-more], .fig-scroll[data-scroll-more] { -webkit-mask-image: linear-gradient(90deg, #000 calc(100% - 3rem), transparent); mask-image: linear-gradient(90deg, #000 calc(100% - 3rem), transparent); }

/* ---------------------------------------------------------------- tables, notes, steps */
.table { overflow-x: auto; margin: 1.2rem 0 1.6rem; scrollbar-width: thin; background: var(--glass); border: 1px solid var(--line); border-radius: 10px; padding: 0.2rem 1rem; }
table { border-collapse: collapse; width: 100%; font-size: 0.95rem; line-height: 1.45; }
th { text-align: left; font: 600 0.7rem/1.2 var(--mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3); padding: 0.7rem 0.8rem 0.55rem 0; border-bottom: 1px solid #39425f; white-space: nowrap; }
td { padding: 0.58rem 0.8rem 0.58rem 0; border-bottom: 1px solid var(--line); vertical-align: top; color: var(--text-2); }
td:first-child { color: #fff; font-weight: 600; }
td code { white-space: nowrap; }
td.wrap code { white-space: normal; }
td.wrap code.nb { white-space: nowrap; }
td.y, td.n, td.d { text-align: center; font: 600 0.82rem/1 var(--mono); }
td.y { color: var(--mint); }
td.n { color: #5d6584; }
td.d { color: #ffd27a; }
tr:last-child td { border-bottom: 0; }
.note, .warn { margin: 1.6rem 0; padding: 0.95rem 1.15rem; background: var(--glass); border: 1px solid var(--line); border-left: 3px solid var(--tone); border-radius: 0 10px 10px 0; color: var(--text-2); }
.warn { border-left-color: var(--pink); }
.note > :last-child, .warn > :last-child { margin-bottom: 0; }
.note b:first-child, .warn b:first-child { font: 600 0.72rem/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--tone); margin-right: 0.5rem; }
.warn b:first-child { color: var(--pink); }
ol.steps { list-style: none; counter-reset: st; padding: 0; margin: 1.5rem 0 2rem; }
ol.steps > li { counter-increment: st; position: relative; padding: 0 0 1rem 3rem; margin: 0; }
ol.steps > li::before { content: counter(st); position: absolute; left: 0; top: 0; width: 1.9rem; height: 1.9rem; display: grid; place-items: center; font: 700 0.85rem/1 var(--display); color: var(--ground); background: var(--tone); border-radius: 6px; box-shadow: 0 0 12px var(--tone); }
ol.steps > li > h3 { margin: 0.2rem 0 0.35rem; font-size: 1.06rem; }

/* ---------------------------------------------------------------- glass cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr)); gap: 1rem; margin: 1.3rem 0 2rem; padding: 0; list-style: none; }
.cards li { margin: 0; position: relative; padding: 1rem 1.1rem 0.95rem; background: var(--glass); border: 1px solid color-mix(in srgb, var(--c, var(--tone)) 55%, transparent); border-radius: 14px; box-shadow: 0 0 22px color-mix(in srgb, var(--c, var(--tone)) 10%, transparent), inset 0 1px 0 rgba(255, 255, 255, 0.04); }
.cards li::before { content: ""; position: absolute; left: 1.1rem; right: 1.1rem; top: 0.55rem; height: 3px; border-radius: 3px; background: linear-gradient(90deg, var(--c, var(--tone)), transparent); opacity: 0.85; }
.cards b { display: block; margin-top: 0.35rem; font: 600 0.98rem/1.3 var(--mono); color: #fff; }
.cards span { display: block; margin-top: 0.35rem; font-size: 0.94rem; line-height: 1.45; color: var(--text-2); }
.cards a { text-decoration: none; }
.cards a:hover b { text-decoration: underline; }
.cards [data-c="cyan"] { --c: var(--cyan); }
.cards [data-c="pink"] { --c: var(--pink); }
.cards [data-c="violet"] { --c: var(--violet); }
.cards [data-c="mint"] { --c: var(--mint); }

/* ---------------------------------------------------------------- figures and renders */
figure.fig { margin: 2rem 0 2.4rem; }
.fig-scroll { overflow-x: auto; background: var(--deep); border: 1px solid var(--line); border-radius: 12px; padding: 1.2rem; scrollbar-width: thin; }
.fig-scroll svg { display: block; width: 100%; height: auto; min-width: 620px; }
.fig-scroll img { display: block; max-width: 100%; height: auto; margin: 0 auto; border-radius: 6px; }
figcaption { margin-top: 0.8rem; font-size: 0.93rem; line-height: 1.5; color: var(--text-3); max-width: var(--measure); }
figcaption b { color: #fff; margin-right: 0.35rem; }
figure:has(.fig-scroll[data-scroll-more]) figcaption::before { content: "Scroll sideways · "; font-weight: 700; color: #fff; }
.hero-img { margin: 0.5rem 0 2.4rem; }
.hero-img img { display: block; width: 100%; height: auto; border-radius: 18px; box-shadow: 0 0 60px rgba(0, 216, 255, 0.12), 0 0 120px rgba(255, 93, 143, 0.08); }
.hero-img figcaption { margin-top: 0.7rem; }
.shots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; align-items: start; }
.shots img { width: 100%; }
.gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem 1.2rem; margin: 1.3rem 0 2rem; padding: 0; list-style: none; max-width: 62rem; }
.gallery li { margin: 0; }
.gallery img { display: block; width: 100%; height: auto; image-rendering: auto; }
.gallery code { display: block; margin-top: 0.4rem; font-size: 0.76rem; color: var(--text-3); background: none; border: 0; padding: 0; }
.only-narrow { display: none; }

/* ---------------------------------------------------------------- live demos */
.demos { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin: 1.3rem 0 1rem; padding: 0; list-style: none; }
.demos li { margin: 0; }
.demos a { display: block; height: 100%; padding: 1.05rem 1.15rem; text-decoration: none; color: var(--text-2); background: var(--glass); border: 1px solid #2c3554; border-radius: 14px; }
.demos a:hover { border-color: var(--mint); box-shadow: 0 0 20px rgba(124, 240, 200, 0.15); }
.demos b { display: block; font: 600 1rem/1.3 var(--display); color: #fff; }
.demos i { display: inline-block; margin-top: 0.4rem; font: 600 0.74rem/1 var(--mono); font-style: normal; color: var(--mint); }
.demos span { display: block; margin-top: 0.4rem; font-size: 0.94rem; line-height: 1.45; }

/* ---------------------------------------------------------------- svg figures */
svg.f { font-family: var(--body); }
svg.f .f-t { font: 650 14.5px var(--body); fill: #fff; }
svg.f .f-s { font: 400 13px var(--body); fill: var(--text-2); }
svg.f .f-xs { font: 600 11px var(--mono); fill: var(--text-3); letter-spacing: 0.05em; }
svg.f .f-m { font: 400 12px var(--mono); fill: #e4e8f6; }
svg.f .wire { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
svg.f .dash { stroke-dasharray: 6 5; }
svg.f .labbg { fill: var(--deep); }
svg.f .s-cyan { stroke: var(--cyan); } svg.f .m-cyan { fill: var(--cyan); } svg.f .b-cyan { fill: rgba(0, 216, 255, 0.07); stroke: var(--cyan); stroke-width: 1.5; }
svg.f .s-pink { stroke: var(--pink); } svg.f .m-pink { fill: var(--pink); } svg.f .b-pink { fill: rgba(255, 93, 143, 0.07); stroke: var(--pink); stroke-width: 1.5; }
svg.f .s-violet { stroke: var(--violet); } svg.f .m-violet { fill: var(--violet); } svg.f .b-violet { fill: rgba(180, 140, 255, 0.08); stroke: var(--violet); stroke-width: 1.5; }
svg.f .s-mint { stroke: var(--mint); } svg.f .m-mint { fill: var(--mint); } svg.f .b-mint { fill: rgba(124, 240, 200, 0.07); stroke: var(--mint); stroke-width: 1.5; }
svg.f .s-ink { stroke: #8d95b3; } svg.f .m-ink { fill: #8d95b3; } svg.f .b-plain { fill: rgba(150, 170, 255, 0.04); stroke: #3a4366; stroke-width: 1.3; }

/* ---------------------------------------------------------------- footer */
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem; max-width: 78rem; margin: 0 auto; padding: 1.4rem 2rem 2.2rem; border-top: 1px solid var(--line); color: var(--text-3); font-size: 0.86rem; }
.foot a { color: var(--text-2); }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 900px) {
  .page { display: block; padding: 0 1.25rem; }
  .rail { display: none; }
  .bar-in { padding: 0.85rem 1.25rem; gap: 0.75rem; }
  .nav { margin-left: 0; gap: 0.35rem 1rem; }
  main { padding-top: 1.8rem; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  body { font-size: 1rem; }
  h2 { font-size: 1.2rem; margin-top: 3rem; }
  .lede { font-size: 1.12rem; }
  pre { margin-left: -1.25rem; margin-right: -1.25rem; border-radius: 0; border-left: 0; border-right: 0; font-size: 0.79rem; }
  .fig-scroll { margin: 0 -1.25rem; border-radius: 0; padding: 0.8rem; }
  .shots, .demos { grid-template-columns: minmax(0, 1fr); }
  .gallery { grid-template-columns: minmax(0, 1fr); }
  dl.defs { grid-template-columns: minmax(0, 1fr); gap: 0.2rem; }
  dl.defs dd { margin-bottom: 0.9rem; }
  .only-wide { display: none; }
  .only-narrow { display: block; }
  .only-narrow svg { min-width: 0; }
  .table { padding: 0.2rem 0.6rem; }
  .table table:has(th:nth-child(3)) { min-width: 34rem; }
  td code, td code.nb, td.wrap code.nb { white-space: normal; overflow-wrap: anywhere; }
  .foot { flex-direction: column; padding: 1.2rem 1.25rem 1.6rem; }
}
@media print {
  html, body { background: #fff !important; color: #000; }
  body { background-image: none; font-size: 10.5pt; }
  .bar, .rail, .skip, .foot { display: none !important; }
  .page { display: block; padding: 0; }
  main { padding: 0; }
  h1, h2, h3, strong, b, dl.defs dt, td:first-child, figcaption b { color: #000 !important; }
  p, li, td, dd, .lede, figcaption, .note { color: #222 !important; }
  pre { background: #fff !important; color: #000 !important; border: 1px solid #999; -webkit-mask-image: none !important; mask-image: none !important; }
  pre * { color: #000 !important; }
  .fig-scroll { overflow: visible; background: #0c0f1c; }
  .fig-scroll svg { min-width: 0; }
  figure, pre, table, .cards li { break-inside: avoid; }
}