/* ── Sassembly — the public web ───────────────────────────────────────────────
   One stylesheet for the whole set.

   LIGHT IS THE DEFAULT, deliberately: `:root` is the light palette and there is
   no `prefers-color-scheme` switch, so a visitor on a dark OS still lands on
   light. Dark is opt-in through the toggle, which stamps
   `data-theme="dark"` on the root element and remembers the choice.

   The identity is taken from the subject rather than applied to it: warm ink on
   a near-white leaf, madder red used the way a manuscript uses rubrication —
   section marks and structure, never decoration — and `॥` as the structural
   glyph. Type: Tiro Devanagari Sanskrit for .t1 source (a face actually cut for
   Sanskrit), Spectral for display and prose, IBM Plex Mono for octets.
   ──────────────────────────────────────────────────────────────────────────── */

:root {
  /* light — the default */
  --ground:   #FBF8F3;
  --surface:  #FFFFFF;
  --sunk:     #F3EDE3;
  --ink:      #16140F;
  --ink-2:    #45403A;
  --ink-3:    #6A6459;   /* 4.9:1 on --ground */
  --rule:     #E6DDCE;
  --rule-2:   #D3C7B2;
  --madder:   #A8351C;
  --madder-d: #7C2413;
  --madder-w: #FDF0EB;   /* wash */
  --teal:     #0F5A54;
  --code-bg:  #1A1814;
  --code-fg:  #F4EFE5;
  --code-dim: #A79C8B;

  --shadow-1: 0 1px 2px rgba(22, 20, 15, .04), 0 1px 1px rgba(22, 20, 15, .03);
  --shadow-2: 0 4px 14px rgba(22, 20, 15, .07), 0 1px 3px rgba(22, 20, 15, .05);
  --shadow-3: 0 18px 44px rgba(22, 20, 15, .10);

  --deva: 'Tiro Devanagari Sanskrit', 'Noto Serif Devanagari', 'Adobe Devanagari', serif;
  --disp: 'Spectral', Georgia, 'Times New Roman', serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --gutter: 80px;
  --measure: 33em;
  --r: 6px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

:root[data-theme="dark"] {
  --ground:   #121110;
  --surface:  #1C1A17;
  --sunk:     #0C0B0A;
  --ink:      #F2EDE3;
  --ink-2:    #D2C9B9;
  --ink-3:    #A29886;
  --rule:     #2E2A25;
  --rule-2:   #423C34;
  --madder:   #E8917B;
  --madder-d: #F5B4A2;
  --madder-w: #241713;
  --teal:     #6FB5AD;
  --code-bg:  #0C0B0A;
  --code-fg:  #F2EDE3;
  --code-dim: #877C6D;

  --shadow-1: 0 1px 2px rgba(0, 0, 0, .40);
  --shadow-2: 0 4px 14px rgba(0, 0, 0, .46);
  --shadow-3: 0 18px 44px rgba(0, 0, 0, .55);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--disp);
  font-size: 17px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--madder); text-decoration: none; transition: color .16s var(--ease); }
a:hover { color: var(--madder-d); }
a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--madder); outline-offset: 3px; border-radius: 2px;
}

h1, h2, h3 { margin: 0; text-wrap: balance; }
h1 { font-size: clamp(36px, 5.4vw, 66px); line-height: 1.02; font-weight: 700; letter-spacing: -0.032em; }
h2 { font-size: clamp(26px, 3vw, 36px); font-weight: 700; letter-spacing: -0.026em; }
h3 { font-size: 19px; font-weight: 600; letter-spacing: -0.012em; }
p  { margin: 0; }

.wrap { max-width: 1320px; margin: 0 auto; padding-inline: var(--gutter); }
@media (max-width: 860px) { :root { --gutter: 18px; } body { font-size: 16px; } }

/* ── masthead ─────────────────────────────────────────────────────────────── */
.masthead {
  position: sticky; top: 0; z-index: 40;
  border-bottom: 1px solid var(--rule);
  background: color-mix(in srgb, var(--ground) 84%, transparent);
  backdrop-filter: saturate(1.6) blur(12px);
  -webkit-backdrop-filter: saturate(1.6) blur(12px);
}
.masthead__in { display: flex; align-items: center; gap: 26px; min-height: 70px; flex-wrap: wrap; padding-block: 10px; }
.brand { display: flex; align-items: baseline; gap: 10px; color: var(--ink); }
.brand__deva { font-family: var(--deva); font-size: 24px; line-height: 1; }
.brand__latin { font-size: 19px; font-weight: 600; letter-spacing: -0.02em; }
.mark { color: var(--rule-2); font-size: 17px; }
.nav { display: flex; gap: 22px; flex-grow: 1; flex-wrap: wrap; font-size: 15px; }
.nav a { color: var(--ink-2); padding-block: 4px; border-bottom: 2px solid transparent; }
.nav a:hover { color: var(--ink); border-bottom-color: var(--rule-2); }
.nav a[aria-current="page"] { color: var(--ink); border-bottom-color: var(--madder); }

/* theme toggle */
.themetoggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; padding: 0;
  background: transparent; color: var(--ink-2);
  border: 1px solid var(--rule); border-radius: var(--r);
  cursor: pointer; transition: background .16s var(--ease), color .16s var(--ease), border-color .16s var(--ease);
}
.themetoggle:hover { background: var(--sunk); color: var(--ink); border-color: var(--rule-2); }
.themetoggle svg { width: 17px; height: 17px; display: block; }
.themetoggle .i-sun { display: none; }
.themetoggle .i-moon { display: block; }
:root[data-theme="dark"] .themetoggle .i-sun { display: block; }
:root[data-theme="dark"] .themetoggle .i-moon { display: none; }

/* ── buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 11px 24px; border-radius: var(--r);
  font-family: var(--disp); font-size: 16px; font-weight: 600; letter-spacing: -0.01em;
  border: 1px solid var(--rule-2); background: var(--surface); color: var(--ink);
  cursor: pointer; box-shadow: var(--shadow-1);
  transition: transform .16s var(--ease), box-shadow .18s var(--ease), background .16s var(--ease), border-color .16s var(--ease);
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-2); border-color: var(--ink-3); }
.btn:active { transform: translateY(0); box-shadow: var(--shadow-1); }
.btn--solid { background: var(--ink); color: var(--ground); border-color: var(--ink); }
.btn--solid:hover { background: var(--ink-2); border-color: var(--ink-2); color: var(--ground); }
.btn--sm { min-height: 40px; padding: 8px 16px; font-size: 14.5px; }

/* ── eyebrow, sections ────────────────────────────────────────────────────── */
.eyebrow {
  font-family: var(--mono); font-size: 11.5px; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--madder);
}
.section { padding-block: 84px; }
.section--tight { padding-block: 44px; }
.section__head { display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.section__note { font-size: 16px; color: var(--ink-3); }
.lede { font-size: 20.5px; line-height: 1.56; color: var(--ink-2); max-width: var(--measure); }

/* ── grids and cards ──────────────────────────────────────────────────────── */
.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.card {
  padding: 26px; background: var(--surface);
  border: 1px solid var(--rule); border-radius: var(--r);
  box-shadow: var(--shadow-1);
  display: flex; flex-direction: column; gap: 10px;
  transition: transform .2s var(--ease), box-shadow .22s var(--ease), border-color .2s var(--ease);
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); border-color: var(--rule-2); }
.card p { font-size: 15.5px; line-height: 1.58; color: var(--ink-2); }
.card--teal { background: var(--teal); border-color: var(--teal); }
.card--teal h3 { color: #F4EFE5; }
.card--teal p { color: #D2E6E3; }
.pillar { border-top: 2px solid var(--madder); padding-top: 22px; display: flex; flex-direction: column; gap: 12px; }
.pillar p { font-size: 16px; line-height: 1.62; color: var(--ink-2); }

/* ── code ─────────────────────────────────────────────────────────────────── */
.pane {
  border: 1px solid var(--rule); border-radius: var(--r); overflow: hidden;
  box-shadow: var(--shadow-2); background: var(--surface);
}
.pane__bar {
  display: flex; justify-content: space-between; gap: 16px; align-items: center;
  padding: 11px 16px; background: var(--code-bg); color: var(--code-dim);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.11em; text-transform: uppercase;
}
.pane__bar .deva { font-family: var(--deva); font-size: 14.5px; letter-spacing: 0; text-transform: none; color: var(--code-fg); }
pre { margin: 0; overflow-x: auto; }
.code-deva {
  padding: 22px 20px; background: var(--code-bg); color: var(--code-fg);
  font-family: var(--deva); font-size: 16px; line-height: 1.9;
}
.code-mono {
  padding: 20px; background: var(--surface); color: var(--ink);
  font-family: var(--mono); font-size: 13px; line-height: 1.82;
}
.code-mono--dark { background: var(--code-bg); color: var(--code-fg); }
code.inline {
  font-family: var(--mono); font-size: 0.86em;
  background: var(--sunk); padding: 2px 6px; border-radius: 4px;
  border: 1px solid var(--rule);
}
code.inline-deva {
  font-family: var(--deva); font-size: 1.02em;
  background: var(--sunk); padding: 1px 6px; border-radius: 4px; border: 1px solid var(--rule);
}

/* ── colophon ─────────────────────────────────────────────────────────────── */
.colophon {
  background: var(--code-bg); color: #F4EFE5; border-radius: calc(var(--r) + 2px);
  padding: 44px 48px; display: flex; gap: 60px; flex-wrap: wrap;
  box-shadow: var(--shadow-3);
}
.colophon__lead { flex: 1 1 280px; display: flex; flex-direction: column; gap: 11px; }
.colophon__lead .eyebrow { color: #D9917B; }
.colophon__lead h2 { font-size: 29px; font-weight: 600; }
.colophon__lead p { font-size: 15.5px; color: var(--code-dim); }
.colophon__figs { flex: 2 1 420px; display: grid; grid-template-columns: repeat(auto-fit, minmax(195px, 1fr)); gap: 28px 44px; }
.fig { display: flex; flex-direction: column; gap: 6px; }
.fig__n { font-family: var(--mono); font-size: 31px; font-weight: 500; font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }
.fig__l { font-size: 14px; line-height: 1.5; color: var(--code-dim); }

/* ── tables ───────────────────────────────────────────────────────────────── */
.tablewrap {
  overflow-x: auto; border: 1px solid var(--rule); border-radius: var(--r);
  background: var(--surface); box-shadow: var(--shadow-1);
}
table { border-collapse: collapse; width: 100%; font-size: 15px; }
caption { text-align: left; padding: 15px 20px; font-size: 14px; color: var(--ink-3); border-bottom: 1px solid var(--rule); }
th, td { text-align: left; padding: 12px 20px; border-bottom: 1px solid var(--rule); vertical-align: top; }
th { font-size: 11.5px; letter-spacing: 0.11em; text-transform: uppercase; color: var(--ink-3); font-weight: 500; font-family: var(--mono); }
tbody tr { transition: background .14s var(--ease); }
tbody tr:hover { background: var(--sunk); }
tbody tr:last-child td { border-bottom: 0; }
td.deva { font-family: var(--deva); font-size: 17px; white-space: nowrap; }
td.mono, th.mono { font-family: var(--mono); font-size: 13px; font-variant-numeric: tabular-nums; }

/* ── docs layout ──────────────────────────────────────────────────────────── */
.docs { display: grid; grid-template-columns: 236px minmax(0, 1fr); gap: 60px; padding-block: 60px; align-items: start; }
.sidenav { position: sticky; top: 94px; display: flex; flex-direction: column; gap: 24px; font-size: 15px; }
.sidenav__group { display: flex; flex-direction: column; gap: 8px; }
.sidenav__title { font-family: var(--mono); font-size: 11px; letter-spacing: 0.13em; text-transform: uppercase; color: var(--ink-3); }
.sidenav a { color: var(--ink-2); padding-left: 11px; border-left: 2px solid var(--rule); }
.sidenav a:hover { color: var(--ink); border-left-color: var(--rule-2); }
.sidenav a[aria-current="page"] { color: var(--madder); font-weight: 600; border-left-color: var(--madder); }

/* NARROW: the two-column docs layout collapses to one, and the sidebar must stop
   sticking — a sticky element in a single-column flow rides over the content as
   you scroll, which is exactly what it did on a phone.

   THIS QUERY MUST STAY BELOW THE `.sidenav` RULES ABOVE. It sat above them until
   2026-09-26 and silently did nothing: a media query adds NO specificity, so a
   later `.sidenav { position: sticky }` of equal weight simply won. `.docs` was
   unaffected only because its base rule happened to come first. */
@media (max-width: 940px) {
  .docs { grid-template-columns: minmax(0, 1fr); gap: 30px; padding-block: 36px; }
  .sidenav {
    position: static; top: auto;
    padding-bottom: 24px; border-bottom: 1px solid var(--rule);
  }
}
.prose { display: flex; flex-direction: column; gap: 24px; max-width: 42em; }
.prose p, .prose li { color: var(--ink-2); }
.prose h2 { margin-top: 20px; }
.prose ul { margin: 0; padding-left: 22px; display: flex; flex-direction: column; gap: 9px; }
.callout {
  border-left: 3px solid var(--madder); background: var(--madder-w);
  padding: 18px 22px; border-radius: 0 var(--r) var(--r) 0;
  display: flex; flex-direction: column; gap: 8px;
}
.callout p { color: var(--ink-2); }
.callout strong { color: var(--ink); }

/* ── playground ───────────────────────────────────────────────────────────── */
.pg { display: grid; grid-template-columns: repeat(auto-fit, minmax(430px, 1fr)); gap: 20px; padding-block: 28px; }
.pg__editor {
  width: 100%; min-height: 392px; resize: vertical; border: 0; display: block;
  padding: 22px 20px; background: var(--code-bg); color: var(--code-fg);
  font-family: var(--deva); font-size: 16px; line-height: 1.9;
}
.stages { display: flex; align-items: center; flex-wrap: wrap; font-family: var(--mono); font-size: 11.5px; box-shadow: var(--shadow-1); border-radius: var(--r); overflow: hidden; }
.stage { padding: 8px 15px; border: 1px solid var(--rule); border-right: 0; background: var(--surface); color: var(--ink-3); }
.stage:last-child { border-right: 1px solid var(--rule); }
.stage--done { background: var(--teal); border-color: var(--teal); color: #F4EFE5; }
.tabs { display: flex; }
.tab {
  padding: 10px 17px; border: 1px solid var(--rule); border-bottom: 0; background: var(--sunk);
  font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); cursor: pointer;
  border-radius: var(--r) var(--r) 0 0; margin-right: 3px;
  transition: background .16s var(--ease), color .16s var(--ease);
}
.tab:hover { color: var(--ink); }
.tab[aria-selected="true"] { background: var(--surface); color: var(--ink); border-bottom: 1px solid var(--surface); margin-bottom: -1px; }
.panel { border: 1px solid var(--rule); border-radius: 0 var(--r) var(--r) var(--r); background: var(--surface); box-shadow: var(--shadow-1); flex-grow: 1; }

/* ── downloads ────────────────────────────────────────────────────────────── */
.dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(265px, 1fr)); gap: 20px; }
.dl__card {
  padding: 24px; border: 1px solid var(--rule); border-radius: var(--r); background: var(--surface);
  box-shadow: var(--shadow-1); display: flex; flex-direction: column; gap: 13px; align-items: flex-start;
  transition: transform .2s var(--ease), box-shadow .22s var(--ease), border-color .2s var(--ease);
}
.dl__card:hover { transform: translateY(-2px); box-shadow: var(--shadow-2); border-color: var(--rule-2); }
.dl__plat { font-size: 19px; font-weight: 600; letter-spacing: -0.012em; }
.dl__meta { font-family: var(--mono); font-size: 12px; color: var(--ink-3); }
.hash { font-family: var(--mono); font-size: 11.5px; word-break: break-all; color: var(--ink-3); }

/* ── footer ───────────────────────────────────────────────────────────────── */
.foot { border-top: 1px solid var(--rule); margin-top: 64px; background: var(--sunk); }
.foot__in { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; padding-block: 36px; font-size: 14px; color: var(--ink-3); }
.foot__deva { font-family: var(--deva); font-size: 17px; color: var(--ink); }
.foot a { color: var(--ink-2); }
.foot a:hover { color: var(--ink); }
.foot__spacer { flex-grow: 1; min-width: 0; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ── Language ─────────────────────────────────────────────────────────────── */
/* SANSKRIT IS THE DEFAULT and the markup is written in it. Devanagari serves
   Sanskrit and Hindi but not identically — the two differ in conjunct formation
   and in the preferred shapes of ल and क्ष — so Tiro has separate cuts and we
   select between them on html[lang]. Latin prose gets Spectral; the Devanagari
   faces have no Latin of their own worth using, so the stacks are ordered to
   let each script fall to the face designed for it. */

html[lang="sa"] body,
html[lang="hi"] body {
  font-size: 17.5px;
  line-height: 1.78;          /* Devanagari needs the extra leading */
}
html[lang="sa"] body { font-family: 'Tiro Devanagari Sanskrit', 'Noto Serif Devanagari', serif; }
html[lang="hi"] body { font-family: 'Tiro Devanagari Hindi', 'Noto Serif Devanagari', serif; }

/* Devanagari has no case, so uppercase tracking is meaningless and letter-spacing
   damages conjuncts. Turn both off where the Latin design used them. */
html[lang="sa"] .eyebrow, html[lang="hi"] .eyebrow,
html[lang="sa"] th,        html[lang="hi"] th,
html[lang="sa"] .pane__bar, html[lang="hi"] .pane__bar,
html[lang="sa"] .sidenav__title, html[lang="hi"] .sidenav__title {
  text-transform: none; letter-spacing: 0.02em;
}
html[lang="sa"] .eyebrow, html[lang="hi"] .eyebrow,
html[lang="sa"] .sidenav__title, html[lang="hi"] .sidenav__title { font-family: inherit; font-size: 13.5px; }
html[lang="sa"] th, html[lang="hi"] th { font-family: inherit; font-size: 14px; }

/* headings: Devanagari carries less weight contrast, so ease the negative
   tracking that suits Spectral and let the line breathe */
html[lang="sa"] h1, html[lang="hi"] h1 { letter-spacing: -0.005em; line-height: 1.24; font-size: clamp(30px, 4.4vw, 52px); }
html[lang="sa"] h2, html[lang="hi"] h2 { letter-spacing: 0; line-height: 1.3; }
html[lang="sa"] h3, html[lang="hi"] h3 { letter-spacing: 0; }
html[lang="sa"] .lede, html[lang="hi"] .lede { font-size: 19.5px; line-height: 1.75; max-width: 36em; }
html[lang="sa"] .fig__n, html[lang="hi"] .fig__n { font-family: var(--mono); }

.langpick, .select {
  min-height: 40px; padding: 8px 12px; border-radius: var(--r);
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--rule); font-family: inherit; font-size: 14.5px;
  cursor: pointer; transition: border-color .16s var(--ease), background .16s var(--ease);
}
.langpick:hover, .select:hover { border-color: var(--rule-2); background: var(--sunk); }

/* ── PRESS ─────────────────────────────────────────────────────────────────
   The newsroom. Entries accumulate, newest first, and each one carries its own
   anchor so a single release can be linked on its own — press.html#v0-4-0 —
   which is the whole reason this is a page rather than a list of GitHub tags. */
.press__lead { max-width: 62ch; }

.release {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 40px;
  padding: 40px 0;
  border-top: 1px solid var(--rule);
  scroll-margin-top: 90px;          /* the masthead is sticky; an anchor must clear it */
}
.release:first-of-type { border-top: 0; }

.release__meta { display: flex; flex-direction: column; gap: 10px; }
.release__ver {
  font-family: var(--mono);
  font-size: 15px; font-weight: 600; letter-spacing: .02em;
  color: var(--madder);
}
.release__date {
  font-family: var(--mono);
  font-size: 13px; color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}
.release__tag {
  align-self: start;
  font-size: 11px; letter-spacing: .09em; text-transform: uppercase;
  padding: 3px 9px; border-radius: 3px;
  border: 1px solid var(--rule-2); color: var(--ink-3);
}
.release__tag--now { border-color: var(--madder); color: var(--madder); }

.release__body { display: flex; flex-direction: column; gap: 16px; }
.release__body h2 { font-size: 27px; line-height: 1.25; margin: 0; text-wrap: balance; }
.release__dek { font-size: 18px; color: var(--ink-2); margin: 0; }
.release__body p { margin: 0; }

/* The measured figures. A press page that states a number without showing where
   it came from is the thing this project spends its pages arguing against. */
.release__figs {
  display: flex; flex-wrap: wrap; gap: 28px;
  padding: 16px 0; margin: 4px 0;
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
}
.release__fig { display: flex; flex-direction: column; gap: 3px; }
.release__fig b {
  font-family: var(--mono); font-size: 19px; font-weight: 600;
  font-variant-numeric: tabular-nums; color: var(--ink);
}
.release__fig span { font-size: 13px; color: var(--ink-3); }

.release__links { display: flex; flex-wrap: wrap; gap: 18px; font-size: 15px; }

.boiler {
  margin-top: 56px; padding-top: 32px;
  border-top: 2px solid var(--rule-2);
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 36px;
}
.boiler h3 { font-size: 13px; letter-spacing: .09em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 10px; }
.boiler p { margin: 0; font-size: 15px; }

@media (max-width: 760px) {
  .release { grid-template-columns: minmax(0, 1fr); gap: 16px; padding: 32px 0; }
  .release__meta { flex-direction: row; align-items: center; gap: 14px; }
}