/* Kokoro GUI docs site: shared tokens and components.
   Used by index.html, format.html, scripting.html, settings.html. Each page
   adds a short page-specific <style> block on top of this for layouts only
   it needs. Dark is the default palette; light is the override, picked by
   the toggle in the nav (data-theme) or the OS setting. */

/* ===================== Tokens ===================== */
:root{
  --bg: #09090b;
  --bg-2: #0e0e11;
  --surface: #121216;
  --surface-2: #18181c;
  --surface-3: #1f1f25;
  --border: #232329;
  --border-2: #303038;
  --text: #f4f4f5;
  --text-2: #a1a1aa;
  --text-3: #71717a;
  --accent: #a78bfa;
  --accent-2: #7c3aed;
  --accent-ink: #0b0b10;
  --teal: #2dd4bf;
  --amber: #fbbf24;
  --rose: #fb7185;
  --glow: radial-gradient(60% 50% at 50% 0%, rgba(124,58,237,.35), transparent 70%);
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 16px 48px rgba(0,0,0,.45);
  --shadow-shot: 0 0 0 1px rgba(255,255,255,.06), 0 40px 120px -20px rgba(124,58,237,.35), 0 30px 80px rgba(0,0,0,.6);
  --radius: 12px;
  --radius-lg: 18px;
  --font-body: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', Menlo, Consolas, monospace;
  --maxw: 1120px;
  --nav-h: 60px;
  color-scheme: dark;
}
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    --bg: #ffffff;
    --bg-2: #fafafa;
    --surface: #ffffff;
    --surface-2: #f6f6f8;
    --surface-3: #eeeef2;
    --border: #e6e6ea;
    --border-2: #d6d6dd;
    --text: #0b0b10;
    --text-2: #4b4b57;
    --text-3: #7a7a88;
    --accent: #6d28d9;
    --accent-2: #7c3aed;
    --accent-ink: #ffffff;
    --teal: #0d9488;
    --amber: #b45309;
    --rose: #be123c;
    --glow: radial-gradient(60% 50% at 50% 0%, rgba(124,58,237,.16), transparent 70%);
    --shadow-sm: 0 1px 2px rgba(11,11,16,.06);
    --shadow: 0 1px 2px rgba(11,11,16,.05), 0 14px 40px rgba(11,11,16,.08);
    --shadow-shot: 0 0 0 1px rgba(11,11,16,.06), 0 40px 120px -30px rgba(124,58,237,.28), 0 30px 70px rgba(11,11,16,.14);
    color-scheme: light;
  }
}
:root[data-theme="light"]{
  --bg: #ffffff;
  --bg-2: #fafafa;
  --surface: #ffffff;
  --surface-2: #f6f6f8;
  --surface-3: #eeeef2;
  --border: #e6e6ea;
  --border-2: #d6d6dd;
  --text: #0b0b10;
  --text-2: #4b4b57;
  --text-3: #7a7a88;
  --accent: #6d28d9;
  --accent-2: #7c3aed;
  --accent-ink: #ffffff;
  --teal: #0d9488;
  --amber: #b45309;
  --rose: #be123c;
  --glow: radial-gradient(60% 50% at 50% 0%, rgba(124,58,237,.16), transparent 70%);
  --shadow-sm: 0 1px 2px rgba(11,11,16,.06);
  --shadow: 0 1px 2px rgba(11,11,16,.05), 0 14px 40px rgba(11,11,16,.08);
  --shadow-shot: 0 0 0 1px rgba(11,11,16,.06), 0 40px 120px -30px rgba(124,58,237,.28), 0 30px 70px rgba(11,11,16,.14);
  color-scheme: light;
}

/* ===================== Base ===================== */
*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
section[id], h2[id], h3[id]{ scroll-margin-top: calc(var(--nav-h) + 20px); }
body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "cv11", "ss01", "calt";
}
img{ max-width: 100%; height: auto; display: block; }
a{ color: inherit; }
h1,h2,h3,h4{ margin: 0; line-height: 1.1; letter-spacing: -.025em; font-weight: 600; text-wrap: balance; }
h1{ font-size: clamp(2.6rem, 6vw, 4.4rem); letter-spacing: -.035em; }
h2{ font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
h3{ font-size: 1.1rem; letter-spacing: -.015em; }
p{ margin: 0; }
.wrap{ max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 2.5rem); }
section{ padding: clamp(4rem, 9vw, 7rem) 0; }
section.tight{ padding: clamp(2.5rem, 5vw, 4rem) 0; }
.muted{ color: var(--text-2); }
.dim{ color: var(--text-3); }
.link{ color: var(--accent); text-decoration: none; font-weight: 500; }
.link:hover{ text-decoration: underline; text-underline-offset: 3px; }
code, .mono{ font-family: var(--font-mono); }
code{ background: var(--surface-2); border: 1px solid var(--border); border-radius: 6px; padding: .12em .4em; font-size: .88em; }
pre code{ background: none; border: none; padding: 0; font-size: inherit; }
::selection{ background: var(--accent-2); color: #fff; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

/* ===================== Type helpers ===================== */
.eyebrow{
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .8rem; font-weight: 600; letter-spacing: .01em;
  color: var(--accent);
}
.sec-head{ display: flex; flex-direction: column; gap: .8rem; margin-bottom: clamp(2rem, 4vw, 3rem); max-width: 620px; }
.sec-head p{ color: var(--text-2); font-size: 1.08rem; }
.sec-head.center{ margin-left: auto; margin-right: auto; text-align: center; align-items: center; }
.grad-text{
  background: linear-gradient(100deg, var(--text) 0%, var(--accent) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ===================== Buttons ===================== */
.btn{
  font-family: inherit; font-weight: 500; font-size: .92rem;
  padding: .62em 1.05em; border-radius: 9px;
  border: 1px solid transparent; display: inline-flex; align-items: center; gap: .45em;
  cursor: pointer; text-decoration: none; white-space: nowrap; line-height: 1.2;
  transition: background .15s ease, border-color .15s ease, color .15s ease, transform .15s ease;
}
.btn:focus-visible{ outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary{ background: var(--text); color: var(--bg); box-shadow: var(--shadow-sm); }
.btn-primary:hover{ background: var(--text-2); }
.btn-accent{ background: var(--accent-2); color: #fff; }
.btn-accent:hover{ filter: brightness(1.1); }
.btn-ghost{ background: transparent; color: var(--text); border-color: var(--border-2); }
.btn-ghost:hover{ background: var(--surface-2); border-color: var(--text-3); }
.btn-lg{ font-size: 1rem; padding: .78em 1.3em; border-radius: 11px; }
.btn .arrow{ transition: transform .15s ease; }
.btn:hover .arrow{ transform: translateX(2px); }

/* ===================== Nav ===================== */
header.site{
  position: sticky; top: 0; z-index: 40;
  backdrop-filter: blur(12px) saturate(1.4);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--border);
}
nav.wrap{
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; min-height: var(--nav-h);
}
.brand{ display: flex; align-items: center; gap: .6rem; text-decoration: none; }
.brand-mark{ width: 26px; height: 26px; border-radius: 7px; flex: none; }
.brand-word{ font-weight: 600; font-size: .98rem; letter-spacing: -.01em; }
.brand-word .ver{
  font-family: var(--font-mono); font-size: .66rem; font-weight: 500; color: var(--text-2);
  margin-left: .45rem; border: 1px solid var(--border); background: var(--surface-2);
  padding: .12em .45em; border-radius: 999px; vertical-align: 2px;
}
.navlinks{ display: flex; align-items: center; gap: .2rem; }
.navlinks a{
  text-decoration: none; font-size: .9rem; color: var(--text-2); font-weight: 500;
  padding: .4em .7em; border-radius: 7px;
}
.navlinks a:hover{ color: var(--text); background: var(--surface-2); }
.navlinks a[aria-current="page"]{ color: var(--text); }
.navctas{ display: flex; align-items: center; gap: .5rem; }
.icon-btn{
  width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--border);
  background: transparent; color: var(--text-2); display: flex; align-items: center; justify-content: center;
  cursor: pointer; flex: none;
}
.icon-btn:hover{ color: var(--text); background: var(--surface-2); }
.menu-btn{ display: none; }
@media (max-width: 860px){
  .navlinks{ display: none; }
  .menu-btn{ display: flex; }
  header.site.open .navlinks{
    display: flex; flex-direction: column; align-items: stretch; gap: .1rem;
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--bg); border-bottom: 1px solid var(--border);
    padding: .6rem clamp(1.25rem, 4vw, 2.5rem) 1rem;
  }
  .navctas .btn{ display: none; }
}

/* ===================== Pills / chips ===================== */
.pill{
  display: inline-flex; align-items: center; gap: .55rem;
  font-size: .82rem; font-weight: 500; color: var(--text-2);
  border: 1px solid var(--border-2); background: var(--surface);
  padding: .32em .9em .32em .4em; border-radius: 999px; text-decoration: none;
  transition: border-color .15s ease, color .15s ease;
}
.pill:hover{ border-color: var(--accent); color: var(--text); }
.pill .tag{
  font-family: var(--font-mono); font-size: .68rem; font-weight: 600; letter-spacing: .02em;
  background: var(--accent-2); color: #fff; padding: .2em .55em; border-radius: 999px;
}
.chip{
  font-size: .78rem; font-weight: 500; color: var(--text-2);
  border: 1px solid var(--border); background: var(--surface);
  padding: .3em .7em; border-radius: 999px; display: inline-flex; align-items: center; gap: .4em;
}
.chip b{ color: var(--text); font-weight: 600; }
.chip .dot{ width: 6px; height: 6px; border-radius: 50%; background: var(--teal); }
.tag-ok{ color: var(--teal); }
.tag-no{ color: var(--text-3); }
.engine-note{
  display: inline-flex; align-items: center; gap: .4em; font-family: var(--font-mono); font-size: .68rem;
  padding: .2em .55em; border-radius: 999px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text-2);
  vertical-align: middle;
}

/* ===================== Cards / bento ===================== */
.card{
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 1.5rem; display: flex; flex-direction: column; gap: .7rem; position: relative; overflow: hidden;
  transition: border-color .18s ease;
}
.card:hover{ border-color: var(--border-2); }
.card h3{ font-size: 1.05rem; }
.card p{ color: var(--text-2); font-size: .94rem; }
.card ul{ margin: 0; padding-left: 1.1rem; color: var(--text-2); font-size: .9rem; display: flex; flex-direction: column; gap: .3rem; }
.card .icon{
  width: 34px; height: 34px; border-radius: 9px; display: flex; align-items: center; justify-content: center;
  background: var(--surface-2); border: 1px solid var(--border); color: var(--accent); margin-bottom: .2rem;
}
.card .more{ margin-top: auto; padding-top: .4rem; font-size: .86rem; font-weight: 500; color: var(--accent); text-decoration: none; }
.card .more:hover{ text-decoration: underline; text-underline-offset: 3px; }
.card.tinted::before{
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: var(--glow); opacity: .7;
}
.bento{ display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; }
.bento > *{ grid-column: span 2; }
.bento .span-3{ grid-column: span 3; }
.bento .span-4{ grid-column: span 4; }
.bento .span-6{ grid-column: span 6; }
@media (max-width: 960px){
  .bento > *, .bento .span-3, .bento .span-4{ grid-column: span 3; }
  .bento .span-6{ grid-column: span 6; }
}
@media (max-width: 620px){
  .bento > *, .bento .span-3, .bento .span-4, .bento .span-6{ grid-column: span 6; }
}

/* ===================== Feature list (icon + text rows) ===================== */
.feature-rows{ display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.6rem 2rem; }
.feature-rows > div{ display: flex; flex-direction: column; gap: .35rem; }
.feature-rows h4{ font-size: .98rem; font-weight: 600; display: flex; align-items: center; gap: .5rem; }
.feature-rows h4 svg{ color: var(--accent); flex: none; }
.feature-rows p{ font-size: .9rem; color: var(--text-2); }

/* ===================== Code block ===================== */
.code-block{
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; position: relative;
}
.code-block .head{
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: .5rem .6rem .5rem 1rem; border-bottom: 1px solid var(--border);
  font-family: var(--font-mono); font-size: .72rem; color: var(--text-3); background: var(--surface-2);
}
.code-block pre{ margin: 0; padding: 1rem 1.2rem; overflow-x: auto; font-family: var(--font-mono); font-size: .84rem; line-height: 1.75; color: var(--text); }
.code-block .c1{ color: var(--text-3); }
.code-block .c2{ color: var(--teal); }
.code-block .c3{ color: var(--accent); }
.copy-btn{
  font-family: var(--font-body); font-size: .74rem; font-weight: 500; color: var(--text-2);
  background: transparent; border: 1px solid var(--border); border-radius: 6px; padding: .3em .6em; cursor: pointer;
  display: inline-flex; align-items: center; gap: .35em;
}
.copy-btn:hover{ color: var(--text); border-color: var(--border-2); }
.copy-btn.done{ color: var(--teal); border-color: var(--teal); }

/* ===================== Tables ===================== */
.table-wrap{ overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
table.ref{ width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 560px; }
table.ref caption{ text-align: left; padding: .8rem 1.1rem; font-weight: 600; font-size: .95rem; background: var(--surface-2); border-bottom: 1px solid var(--border); caption-side: top; }
table.ref th{ text-align: left; font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); padding: .65rem 1.1rem; border-bottom: 1px solid var(--border); background: var(--surface-2); white-space: nowrap; }
table.ref td{ padding: .75rem 1.1rem; border-bottom: 1px solid var(--border); vertical-align: top; }
table.ref tr:last-child td{ border-bottom: none; }
table.ref td:first-child{ font-family: var(--font-mono); font-size: .82rem; white-space: nowrap; color: var(--text); }
table.ref td:last-child{ color: var(--text-2); }
table.ref.wrap-first td:first-child{ white-space: normal; }

/* ===================== Callouts ===================== */
.callout{
  border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.25rem;
  background: var(--surface); display: flex; gap: .9rem; align-items: flex-start;
}
.callout .icon{ flex: none; width: 20px; height: 20px; margin-top: .15rem; }
.callout p{ font-size: .92rem; color: var(--text-2); }
.callout p + p{ margin-top: .5rem; }
.callout strong{ color: var(--text); }
.callout.warn{ border-color: color-mix(in srgb, var(--amber) 45%, var(--border)); }
.callout.warn .icon{ color: var(--amber); }
.callout.info .icon{ color: var(--accent); }

/* ===================== Footer ===================== */
footer.site{ border-top: 1px solid var(--border); padding: 3rem 0 2.2rem; background: var(--bg-2); }
footer .cols{ display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 2rem; margin-bottom: 2.4rem; }
@media (max-width: 760px){ footer .cols{ grid-template-columns: 1fr 1fr; } }
footer h5{ margin: 0 0 .7rem; font-size: .78rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); }
footer ul{ list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .45rem; }
footer a{ text-decoration: none; color: var(--text-2); font-size: .9rem; }
footer a:hover{ color: var(--text); }
footer .blurb{ font-size: .9rem; color: var(--text-2); max-width: 34ch; margin-top: .6rem; }
footer .bottom{ display: flex; justify-content: space-between; flex-wrap: wrap; gap: .8rem; padding-top: 1.4rem; border-top: 1px solid var(--border); font-size: .8rem; color: var(--text-3); }

/* ===================== Reference pages ===================== */
.page-head{ padding: clamp(3rem, 7vw, 5rem) 0 clamp(1.5rem, 3vw, 2.5rem); position: relative; }
.page-head .eyebrow{ margin-bottom: 1rem; }
.page-head h1{ font-size: clamp(2.2rem, 4.4vw, 3.4rem); margin-bottom: 1rem; max-width: 20ch; }
.page-head p.lede{ font-size: 1.08rem; color: var(--text-2); max-width: 64ch; }
.toc{ display: flex; flex-wrap: wrap; gap: .45rem; margin-top: 1.6rem; }
.toc a{
  font-size: .8rem; font-weight: 500; text-decoration: none; color: var(--text-2);
  border: 1px solid var(--border); background: var(--surface); padding: .35em .75em; border-radius: 999px;
}
.toc a:hover{ color: var(--text); border-color: var(--accent); }
.prose{ max-width: 740px; display: flex; flex-direction: column; gap: 1.05rem; }
.prose p{ font-size: 1rem; color: var(--text-2); }
.prose p strong{ color: var(--text); font-weight: 600; }
.prose h2{ font-size: 1.55rem; color: var(--text); }
.prose h2 .idx, .doc-section h2 .idx{
  font-family: var(--font-mono); font-size: .72rem; color: var(--accent); display: block; letter-spacing: .06em;
  text-transform: uppercase; margin-bottom: .5rem; font-weight: 500;
}
.doc-section{ padding: clamp(2.4rem, 5vw, 3.6rem) 0; border-top: 1px solid var(--border); }
.doc-section:first-of-type{ border-top: none; }
.doc-section h2{ font-size: 1.55rem; }
.doc-section > .wrap > p.dek{ color: var(--text-2); font-size: .95rem; max-width: 740px; margin-top: .6rem; margin-bottom: 1.3rem; }
.steps{ display: flex; flex-direction: column; gap: .9rem; counter-reset: step; padding: 0; margin: 0; }
.steps li{ list-style: none; display: flex; gap: 1rem; align-items: flex-start; }
.steps li::before{
  counter-increment: step; content: counter(step);
  font-family: var(--font-mono); font-size: .76rem; font-weight: 600; color: var(--accent);
  width: 26px; height: 26px; border-radius: 999px; flex: none;
  background: var(--surface-2); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center; margin-top: .1rem;
}
.steps p{ font-size: .95rem; color: var(--text-2); }
.steps strong{ color: var(--text); }
.anno{ display: flex; flex-direction: column; gap: .9rem; margin-top: 1.3rem; }
.anno-row{ display: grid; grid-template-columns: 220px 1fr; gap: 1rem; align-items: start; }
@media (max-width: 700px){ .anno-row{ grid-template-columns: 1fr; } }
.anno-row > code{ display: block; white-space: normal; }
.anno-row p{ font-size: .92rem; color: var(--text-2); margin: 0; }

/* ===================== File tree (format page) ===================== */
.tree{ font-family: var(--font-mono); font-size: .8rem; line-height: 1.8; margin: 0; padding: 1rem 1.2rem; overflow-x: auto; }
.tree .d{ color: var(--accent); }
.tree .f{ color: var(--text); }
.tree .c{ color: var(--text-3); }

/* entrance animation: pure CSS, always completes, never depends on scroll/JS */
@keyframes revealUp{ from{ opacity: 0; transform: translateY(10px); } to{ opacity: 1; transform: none; } }
.reveal{ animation: revealUp .5s ease both; }