/* Wire — deep navy, a live rail behind everything, and a spine of nodes for navigation.
   Deliberately NOT a panel grid with a top tab bar: the last project used that shape. */

:root{
  --void:#05070f;
  --navy:#0a1024;
  --panel:rgba(14,22,48,.72);
  --line:rgba(127,166,255,.16);
  --ink:#dfe7ff;
  --dim:#8794bd;
  --blue:#7fa6ff;
  --cyan:#8fd3ff;
  --gold:#c9a86a;
  --green:#57e2a5;
  --red:#ff6b7a;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:var(--void);color:var(--ink);
  font:400 15px/1.6 var(--sans);
  -webkit-font-smoothing:antialiased;
  /* 🔴 FOUR children, four rows. The spine is `position:fixed` on desktop so its row collapses to
     zero there, but on mobile it is in the flow — with only three rows declared it was landing in
     an implicit row and the nav simply vanished at 390 px. */
  display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;
  grid-template-columns:minmax(0,1fr);
  height:100dvh;overflow:hidden;
}
#rail{position:fixed;inset:0;z-index:0;pointer-events:none}
body::after{ /* a vignette so the field never competes with the text */
  content:"";position:fixed;inset:0;z-index:1;pointer-events:none;
  background:radial-gradient(120% 90% at 50% 0%,transparent 40%,rgba(5,7,15,.72) 100%);
}
body>*{position:relative;z-index:2}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}

/* ── chrome ───────────────────────────────────────────────────────────── */
.top{display:flex;align-items:center;justify-content:space-between;gap:14px;min-width:0;
  padding:12px 20px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(6,9,20,.92),rgba(6,9,20,.55));backdrop-filter:blur(8px)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:600;letter-spacing:3px}
.brand img{border-radius:50%;filter:drop-shadow(0 2px 10px rgba(201,168,106,.35))}
.top-right{display:flex;align-items:center;gap:8px;font:400 12px/1 var(--mono);min-width:0;flex-wrap:wrap;justify-content:flex-end}
.chip{border:1px solid var(--line);border-radius:999px;padding:5px 10px;color:var(--dim);white-space:nowrap}
.chip b{color:var(--ink);font-weight:500}
.chip.bad{border-color:rgba(255,107,122,.4);color:var(--red)}

.bottom{display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:9px 20px;border-top:1px solid var(--line);color:var(--dim);
  font:400 12px/1.4 var(--mono);background:rgba(6,9,20,.7);backdrop-filter:blur(8px)}
.sep{opacity:.4}

/* ── the spine: nodes ON a wire, and that is the whole navigation ─────── */
.stage{min-height:0;min-width:0;position:relative}
.scroll{height:100%;overflow-y:auto;overflow-x:hidden;padding:34px 20px 60px 0;
  scroll-behavior:smooth;overscroll-behavior:contain}

.spine{position:fixed;left:28px;top:96px;bottom:70px;width:210px;z-index:3;
  display:flex;flex-direction:column;justify-content:center;gap:0}
.spine::before{content:"";position:absolute;left:5px;top:0;bottom:0;width:1px;
  background:linear-gradient(180deg,transparent,rgba(127,166,255,.5),transparent)}
.spine a{position:relative;display:flex;align-items:center;gap:14px;padding:11px 0;
  color:var(--dim);font:500 12px/1 var(--mono);letter-spacing:2px;text-decoration:none}
.spine a::before{content:"";width:11px;height:11px;border-radius:50%;flex:0 0 auto;
  background:var(--void);border:1px solid rgba(127,166,255,.55);transition:.18s}
.spine a:hover{color:var(--ink);text-decoration:none}
.spine a.on{color:var(--cyan)}
.spine a.on::before{background:var(--cyan);border-color:var(--cyan);
  box-shadow:0 0 0 4px rgba(143,211,255,.16),0 0 16px rgba(143,211,255,.5)}
.spine em{font-style:normal;opacity:.45;font-size:11px}

/* the column of content sits to the right of the spine */
.wrap{max-width:820px;margin-left:272px}
@media(max-width:620px){
  .top{padding:10px 14px}
  #chipBlock{display:none}          /* the block number is on the OVERVIEW screen anyway */
  .brand{letter-spacing:2px}
}
@media(max-width:980px){
  .spine{position:static;flex-direction:row;width:auto;gap:4px;padding:10px 14px 0;
    overflow-x:auto;scrollbar-width:none;justify-content:flex-start}
  .spine::before{left:14px;right:14px;top:auto;bottom:10px;width:auto;height:1px;
    background:linear-gradient(90deg,transparent,rgba(127,166,255,.5),transparent)}
  .spine a{flex-direction:column;gap:7px;padding:4px 12px 14px;white-space:nowrap}
  .spine em{display:none}
  .wrap{margin-left:0;min-width:0}
  .scroll{padding:18px 16px 40px}
  th{white-space:normal}
  .bound{grid-template-columns:24px minmax(0,1fr);row-gap:4px}
  .bound .v{grid-column:2}
}

/* ── content ──────────────────────────────────────────────────────────── */
section.blk{margin:0 0 44px}
h1{font-size:clamp(30px,5.2vw,50px);line-height:1.08;margin:0 0 14px;font-weight:600;letter-spacing:-.6px}
h2{font-size:12px;letter-spacing:3px;color:var(--cyan);margin:0 0 14px;font-family:var(--mono);font-weight:500}
h3{font-size:17px;margin:0 0 6px;font-weight:600}
p{margin:0 0 14px;color:#c3cdeb;max-width:66ch}
p.lede{font-size:18px;color:var(--ink)}
.dim{color:var(--dim)}
.mono{font-family:var(--mono)}

.hero{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:30px;align-items:center}
.hero img{width:min(260px,34vw);height:auto;filter:drop-shadow(0 18px 50px rgba(0,0,0,.6))}
@media(max-width:760px){.hero{grid-template-columns:1fr}.hero img{width:180px;justify-self:center}}

/* 🔴 A wide table scrolls INSIDE its card instead of pushing the column past the viewport. The
   probe caught .wrap at 423 px inside a 390 px screen: `.scroll` was clipping the overflow, so
   nothing looked broken while content was quietly being cut off. */
.card{border:1px solid var(--line);border-radius:14px;background:var(--panel);
  backdrop-filter:blur(10px);padding:18px;overflow-x:auto;min-width:0}
.cards{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(228px,1fr))}

.bounds{display:grid;gap:10px}
.bound{display:grid;grid-template-columns:26px minmax(0,1fr) auto;gap:12px;align-items:center;
  border:1px solid var(--line);border-radius:12px;padding:12px 14px;background:var(--panel)}
.bound b{display:block;font-weight:600}
.bound .n{font:500 12px/1 var(--mono);color:var(--cyan);opacity:.8}
.bound .v{font:500 14px/1 var(--mono);color:var(--gold);white-space:nowrap}

label{display:block;font:500 11px/1 var(--mono);letter-spacing:1.6px;color:var(--dim);margin:0 0 7px}
input[type=number],input[type=text],select{width:100%;background:rgba(5,9,22,.8);
  border:1px solid var(--line);border-radius:9px;color:var(--ink);padding:9px 11px;
  font:400 14px/1 var(--mono);outline:none}
input:focus,select:focus{border-color:var(--cyan)}
input[type=range]{width:100%;accent-color:#8fd3ff}
.field{margin:0 0 14px}
.grid2{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}
.check{display:flex;align-items:center;gap:9px;font-size:14px;color:#c3cdeb}
.check input{width:16px;height:16px;accent-color:#8fd3ff}

.btn{background:rgba(143,211,255,.12);border:1px solid rgba(143,211,255,.42);color:var(--cyan);
  border-radius:999px;padding:8px 18px;font:500 12px/1 var(--mono);letter-spacing:1.4px;cursor:pointer}
.btn:hover:not(:disabled){background:var(--cyan);color:#04121e}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn.ghost{background:transparent}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:13px}
th{text-align:left;color:var(--cyan);font-weight:500;padding:0 14px 8px 0;white-space:nowrap}
td{padding:7px 14px 7px 0;border-top:1px solid rgba(127,166,255,.1);color:#c3cdeb;vertical-align:top}
td.r,th.r{text-align:right;padding-right:0}
td:last-child,th:last-child{padding-right:0}

.tag{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:3px 10px;
  font:500 11px/1.4 var(--mono);letter-spacing:1.2px;color:var(--dim)}
.tag.ok{border-color:rgba(87,226,165,.45);color:var(--green)}
.tag.no{border-color:rgba(255,107,122,.45);color:var(--red)}
.note{font-size:13px;color:var(--dim)}
.warn{border-left:2px solid var(--gold);padding-left:12px;color:#c3cdeb;font-size:14px}
.ok{color:var(--green)}.no{color:var(--red)}.gold{color:var(--gold)}

/* the box drawing: what the agent can spend, and what it cannot */
.box{position:relative;border:1px dashed rgba(143,211,255,.5);border-radius:14px;
  padding:16px;background:rgba(143,211,255,.05)}
.box .cap{position:absolute;top:-9px;left:14px;background:var(--void);padding:0 8px;
  font:500 10px/1 var(--mono);letter-spacing:2px;color:var(--cyan)}
.meter{height:8px;border-radius:999px;background:rgba(127,166,255,.14);overflow:hidden;margin:8px 0 0}
.meter i{display:block;height:100%;background:linear-gradient(90deg,#8fd3ff,#7fa6ff)}