/* hive docs — shared design system (matches anupam-io/sprint-skills aesthetic) */
:root{
  --bg:#0b0f14; --card:#141b24; --edge:#232d3a;
  --ink:#e8edf2; --ink2:#97a3b2; --ink3:#5c6878;
  --accent:#2dd4bf; --accent2:#5b9cf5;
}
*{ box-sizing:border-box; margin:0; padding:0; }
html{ background:var(--bg); scroll-behavior:smooth; }
body{
  font-family:'IBM Plex Mono',ui-monospace,monospace; color:var(--ink);
  min-height:100vh; line-height:1.7; font-size:13.5px;
  background:
    radial-gradient(1200px 600px at 70% -10%, rgba(45,212,191,.07), transparent 60%),
    radial-gradient(900px 500px at 0% 100%, rgba(91,156,245,.05), transparent 60%), var(--bg);
}
body::before{
  content:''; position:fixed; inset:0; pointer-events:none; z-index:0;
  background-image:radial-gradient(rgba(151,163,178,.10) 1px, transparent 1px); background-size:26px 26px;
}
.wrap{ position:relative; z-index:1; max-width:1080px; margin:0 auto; padding:48px 32px 56px; }
.wrap.doc{ max-width:880px; }

/* nav */
nav.top{ display:flex; gap:22px; align-items:baseline; font-size:11px; letter-spacing:.06em;
  text-transform:uppercase; margin-bottom:48px; flex-wrap:wrap; }
nav.top a{ color:var(--ink3); text-decoration:none; transition:color .15s ease; }
nav.top a:hover{ color:var(--accent); }
nav.top a.brand{ color:var(--ink); font-weight:600; letter-spacing:.18em; }
nav.top a.brand:hover{ color:var(--accent); }

/* headings */
.kicker{ font-size:11px; letter-spacing:.32em; text-transform:uppercase; color:var(--accent); margin-bottom:14px; }
h1{ font-family:'Instrument Serif',serif; font-weight:400; font-style:italic;
  font-size:clamp(38px,6vw,56px); line-height:1.04; color:var(--ink); }
h1 em{ font-style:normal; color:var(--accent); }
h2{ font-family:'Instrument Serif',serif; font-weight:400; font-style:italic; font-size:27px;
  line-height:1.15; color:var(--ink); margin:48px 0 6px; padding-top:22px; border-top:1px solid var(--edge); }
h2 .num{ font-style:normal; color:var(--accent); font-size:18px; margin-right:.5em; }
h3{ font-family:'Instrument Serif',serif; font-style:italic; font-weight:400; font-size:19px;
  color:var(--ink); margin:26px 0 6px; }
.lede{ margin-top:16px; max-width:66ch; font-size:13.5px; line-height:1.75; color:var(--ink2); }
.lede b{ color:var(--ink); font-weight:600; }
p{ color:var(--ink2); margin:12px 0; max-width:72ch; }
p b, li b{ color:var(--ink); font-weight:600; }
em{ color:var(--ink); font-style:italic; }
ul,ol{ color:var(--ink2); margin:12px 0 12px 1.3em; }
li{ margin:5px 0; }
a{ color:var(--accent); text-decoration:none; }
a:hover{ text-decoration:underline; text-decoration-color:var(--accent); }

/* code */
code{ font-family:'IBM Plex Mono',monospace; background:color-mix(in srgb, var(--accent) 10%, transparent);
  color:var(--ink); padding:.12em .4em; border-radius:5px; font-size:.9em; }
pre{ background:var(--card); border:1px solid var(--edge); border-left:3px solid var(--accent);
  border-radius:10px; padding:16px 18px; overflow-x:auto; margin:16px 0; font-size:12.5px; line-height:1.6; }
pre code{ background:none; padding:0; color:var(--ink); }

/* cards / grid */
.grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:20px; margin-top:36px; }
a.card{ display:block; text-decoration:none; color:inherit; background:var(--card); border:1px solid var(--edge);
  border-left:3px solid var(--accent); border-radius:10px; padding:22px 22px 20px;
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
a.card:hover{ transform:translateY(-3px); text-decoration:none;
  box-shadow:0 0 0 1px color-mix(in srgb, var(--accent) 30%, transparent), 0 16px 40px -16px color-mix(in srgb, var(--accent) 50%, transparent); }
.card h3{ margin:12px 0 6px; }
.card p{ margin:0; font-size:12px; color:var(--ink2); line-height:1.55; }
.go{ margin-top:16px; font-size:11px; letter-spacing:.06em; color:var(--accent); }

/* pills / badges */
.pill,.scope{ display:inline-block; font-size:9px; font-weight:600; letter-spacing:.14em; text-transform:uppercase;
  padding:3px 9px; border-radius:9px; }
.pill{ color:var(--accent); background:color-mix(in srgb, var(--accent) 14%, transparent); }
.scope{ letter-spacing:.1em; }
.s-proj{ color:var(--accent2); background:color-mix(in srgb, var(--accent2) 16%, transparent); }
.s-cluster{ color:var(--accent); background:color-mix(in srgb, var(--accent) 14%, transparent); }

/* tables */
table{ border-collapse:collapse; width:100%; margin:18px 0; font-size:12px; }
th,td{ border:1px solid var(--edge); padding:9px 12px; text-align:left; vertical-align:top; }
th{ background:color-mix(in srgb, var(--accent) 8%, var(--card)); color:var(--ink); font-weight:600;
  text-transform:uppercase; letter-spacing:.06em; font-size:10.5px; }
td{ color:var(--ink2); }
td code{ white-space:nowrap; }

/* toc */
.toc{ background:var(--card); border:1px solid var(--edge); border-radius:10px; padding:16px 20px; margin:24px 0; }
.toc strong{ color:var(--ink); font-size:11px; letter-spacing:.16em; text-transform:uppercase; color:var(--accent); }
.toc ol{ margin:10px 0 0; padding-left:1.3em; columns:2; }
.toc a{ color:var(--ink2); } .toc a:hover{ color:var(--accent); }

/* callout */
.note{ background:color-mix(in srgb, var(--accent) 8%, var(--card)); border:1px solid var(--edge);
  border-left:3px solid var(--accent); padding:13px 16px; border-radius:0 10px 10px 0; margin:16px 0; font-size:12.5px; }
.note b{ color:var(--accent); }

/* collapsibles (troubleshooting) */
.item{ border:1px solid var(--edge); background:var(--card); border-radius:10px; padding:2px 20px; margin:14px 0;
  transition:border-color .15s ease; }
.item:hover{ border-color:color-mix(in srgb, var(--accent) 40%, var(--edge)); }
.item summary{ cursor:pointer; font-weight:500; color:var(--ink); padding:14px 0; list-style:none; font-size:13px; }
.item summary::-webkit-details-marker{ display:none; }
.item summary::before{ content:"▸"; color:var(--accent); margin-right:10px; display:inline-block; transition:transform .15s ease; }
.item[open] summary::before{ transform:rotate(90deg); }
.item .sym{ color:var(--ink3); font-weight:400; }
.item p,.item pre{ margin-bottom:14px; }

/* diagrams */
.diagram{ background:var(--card); border:1px solid var(--edge); border-radius:10px; padding:18px; margin:22px 0; overflow-x:auto; }

/* flow diagram (no mermaid) */
.flow{ margin:26px 0 30px; display:flex; flex-direction:column; align-items:center; }
.flow-node{ display:flex; align-items:center; gap:13px; text-align:left;
  background:var(--card); border:1px solid var(--edge); border-left:3px solid var(--c,var(--accent));
  border-radius:11px; padding:13px 17px; max-width:340px;
  box-shadow:0 12px 30px -22px var(--c,var(--accent)); transition:transform .16s ease, box-shadow .16s ease; }
.flow-node:hover{ transform:translateY(-2px); box-shadow:0 16px 38px -20px var(--c,var(--accent)); }
.flow-node .ic{ flex:0 0 auto; width:38px; height:38px; display:grid; place-items:center;
  border-radius:10px; color:var(--c,var(--accent));
  background:color-mix(in srgb, var(--c,var(--accent)) 14%, transparent);
  border:1px solid color-mix(in srgb, var(--c,var(--accent)) 30%, transparent); }
.flow-node .ic svg{ width:21px; height:21px; }
.flow-node .txt{ display:flex; flex-direction:column; gap:1px; min-width:0; }
.flow-node .txt b{ font-size:13px; color:var(--ink); font-weight:600; letter-spacing:.01em; }
.flow-node .txt span{ font-size:10.5px; color:var(--ink3); line-height:1.45; }
.flow-node .txt span.model{ color:var(--c,var(--accent)); font-weight:500; letter-spacing:.02em; }
.flow-node.hub{ max-width:380px; border-width:1px 1px 1px 3px;
  box-shadow:0 0 0 1px color-mix(in srgb, var(--accent) 22%, transparent), 0 18px 44px -22px var(--accent); }

/* vertical bidirectional link (human <-> driver) */
.flow-link{ display:flex; flex-direction:column; align-items:center; gap:6px; padding:9px 0; }
.flow-link .rail{ width:2px; height:30px; border-radius:2px;
  background:linear-gradient(var(--ink3), color-mix(in srgb, var(--accent) 60%, var(--ink3))); position:relative; }
.flow-link.bi .rail::before,.flow-link.bi .rail::after{ content:''; position:absolute; left:50%; transform:translateX(-50%);
  border-left:4px solid transparent; border-right:4px solid transparent; }
.flow-link.bi .rail::before{ top:-1px; border-bottom:5px solid var(--ink3); }
.flow-link.bi .rail::after{ bottom:-1px; border-top:5px solid color-mix(in srgb, var(--accent) 60%, var(--ink3)); }
.flow-link .cap{ font-size:10px; color:var(--ink3); letter-spacing:.02em; }

/* spokes under the hub */
.flow-spokes{ display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:20px;
  width:100%; max-width:1000px; margin-top:4px; position:relative; }
.flow-spokes::before{ content:''; position:absolute; top:-14px; left:16.66%; right:16.66%;
  height:2px; background:var(--edge); border-radius:2px; }
.spoke{ display:flex; flex-direction:column; align-items:center; gap:0; position:relative; }
.spoke::before{ content:''; position:absolute; top:-14px; left:50%; transform:translateX(-50%);
  width:2px; height:14px; background:var(--edge); }
.spoke .flow-node{ max-width:none; width:100%; }

/* connector with numbered steps */
.connector{ display:flex; flex-direction:column; gap:7px; width:100%; padding:6px 0 11px; }
.step{ display:flex; align-items:flex-start; gap:8px; font-size:10.5px; color:var(--ink2); line-height:1.4; }
.step i{ flex:0 0 auto; width:18px; height:18px; display:grid; place-items:center; font-style:normal;
  font-size:10px; font-weight:600; border-radius:50%; color:var(--bg);
  background:var(--accent); margin-top:1px; }
.step.up i{ background:var(--accent2); }
.step.down::before,.step.up::before{ content:''; margin-top:2px; flex:0 0 auto;
  border-left:3px solid transparent; border-right:3px solid transparent; }
.step.down::before{ border-top:5px solid var(--accent); }
.step.up::before{ border-bottom:5px solid var(--accent2); }

/* re-fire loop badge */
.loop{ display:inline-flex; align-items:center; gap:7px; margin-top:10px; font-size:9.5px;
  letter-spacing:.04em; color:var(--ink3); border:1px dashed var(--edge); border-radius:20px; padding:4px 11px; }
.loop .arc{ width:11px; height:11px; border:1.5px solid var(--ink3); border-top-color:transparent;
  border-radius:50%; position:relative; }
.loop .arc::after{ content:''; position:absolute; top:-2px; right:-1px;
  border-left:3px solid transparent; border-right:3px solid transparent; border-bottom:4px solid var(--ink3); }

@media(max-width:680px){
  .flow-spokes{ grid-template-columns:1fr; gap:26px; }
  .flow-spokes::before,.spoke::before{ display:none; }
  .connector{ padding-top:0; }
}
.modes{ display:grid; grid-template-columns:repeat(auto-fit,minmax(230px,1fr)); gap:16px; margin:22px 0; }
.mode{ background:var(--card); border:1px solid var(--edge); border-left:3px solid var(--accent); border-radius:10px; padding:16px 18px; }
.mode h3{ margin:0 0 6px; font-size:16px; }
.mode p{ margin:0; font-size:11.5px; }

/* meta + footer */
.meta{ color:var(--ink3); font-size:11.5px; }
footer{ margin-top:48px; padding-top:18px; border-top:1px solid var(--edge);
  font-size:10px; letter-spacing:.1em; text-transform:uppercase; color:var(--ink3); }
footer a{ color:var(--ink2); } footer a:hover{ color:var(--accent); }