/* Two Doors — shared styles.
   No framework, no build step. JavaScript is progressive enhancement only:
   every page is complete and readable without it. */

:root {
  --bg: #f4f2ed;
  --card: #fdfcf8;
  --fg: #14130f;
  --muted: #6e6a5e;
  --rule: #ded9cc;
  --rule-strong: #b09a6e;
  --hover: #f6f1e4;
  --accent: #8a4a22;
  --focus: #2f6fd0;

  --spent: #f0997b;
  --spent-ink: #4a1b0c;
  --spent-over: #e24b4a;
  --left: #e1f5ee;
  --left-ink: #04342c;
  --good: #5dcaa5;

  --measure: 36rem;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --serif: ui-serif, Charter, Georgia, "Times New Roman", serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1917;
    --card: #232220;
    --fg: #ece9e2;
    --muted: #9b968a;
    --rule: #38352f;
    --rule-strong: #6b6250;
    --hover: #2b2926;
    --accent: #d99a6c;
    --focus: #7fb0ff;

    --spent: #993c1d;
    --spent-ink: #f5c4b3;
    --spent-over: #a32d2d;
    --left: #0f6e56;
    --left-ink: #9fe1cb;
    --good: #1d9e75;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  padding: 2.5rem 1.25rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
}

.wrap { max-width: var(--measure); margin: 0 auto; }

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 2px; }

/* --- header card --- */

.card {
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--card);
  padding: 1.5rem;
}

.name { margin: 0; font-size: 1.875rem; line-height: 1.15; letter-spacing: -0.015em; font-family: var(--serif); font-weight: 600; }
.role { margin: 0.4rem 0 0; font-size: 1.0625rem; font-weight: 600; }
.pitch { margin: 0.85rem 0 0; color: var(--muted); font-family: var(--serif); font-size: 1.0625rem; }

.meta { margin: 1.25rem 0 0; display: flex; flex-wrap: wrap; gap: 0.75rem 1.25rem; align-items: center; font-size: 0.9375rem; }

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 1px solid var(--fg);
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  transition: background .15s, color .15s;
}
.btn:hover { background: var(--fg); color: var(--card); }

/* --- doors --- */

.doors { margin: 1.75rem 0 0; padding: 0; list-style: none; display: grid; gap: 1rem; }
@media (min-width: 34rem) { .doors { grid-template-columns: 1fr 1fr; } }

.door {
  display: block;
  height: 100%;
  padding: 1.25rem;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--card);
  text-decoration: none;
  transition: background .15s, border-color .15s, transform .15s;
}
.door:hover { background: var(--hover); border-color: var(--rule-strong); transform: translateY(-2px); }

.door-label { margin: 0; font-size: 1.125rem; font-weight: 700; }
.door-label::after { content: "\2192"; display: inline-block; margin-left: 0.35em; transition: transform .15s; }
.door:hover .door-label::after { transform: translateX(4px); }
.door-note { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.9375rem; }
.door-time { margin: 0.6rem 0 0; font-family: var(--sans); font-size: 0.8125rem; color: var(--muted); letter-spacing: 0.02em; }

/* --- the three numbers --- */

.numbers { margin: 1.75rem 0 0; color: var(--muted); font-size: 1rem; line-height: 1.9; }
.numbers strong { color: var(--accent); font-weight: 600; }

/* --- interior pages --- */

.back { display: inline-block; margin: 0 0 1.5rem; font-size: 0.9375rem; color: var(--muted); }

h2 {
  margin: 2.75rem 0 0.75rem;
  font-size: 1.3125rem;
  line-height: 1.3;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--sans);
}
h3 { margin: 1.5rem 0 0.25rem; font-size: 1.0625rem; }

p, li, dd { font-family: var(--serif); }
.lede { font-size: 1.1875rem; line-height: 1.55; }
.role-line { margin: 0; color: var(--muted); font-size: 0.9375rem; font-family: var(--sans); }

.scope {
  margin: 1.25rem 0 0;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--card);
  color: var(--muted);
  font-size: 0.9375rem;
}
.scope strong { color: var(--fg); }

.method { margin: 0.2rem 0 1rem; color: var(--muted); font-size: 0.875rem; line-height: 1.55; font-family: var(--sans); }

ul.tight { margin: 0.5rem 0 0; padding-left: 1.15rem; }
ul.tight li { margin: 0.35rem 0; }
.stack dt { font-weight: 600; margin-top: 0.85rem; font-family: var(--sans); }
.stack dd { margin: 0.15rem 0 0; color: var(--muted); }

figure { margin: 1.75rem 0; }
figure svg { width: 100%; height: auto; display: block; }
figcaption { margin-top: 0.6rem; color: var(--muted); font-size: 0.875rem; font-family: var(--sans); }

.artifact {
  margin: 1.25rem 0;
  overflow-x: auto;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1rem 1.1rem;
}
.artifact pre { margin: 0; }
.artifact code { font-family: var(--mono); font-size: 0.8125rem; line-height: 1.6; white-space: pre; }
.c-com { color: var(--muted); }
.c-key { font-weight: 700; color: var(--accent); }

/* --- data visuals (static first; JS only adds the slider) --- */

.viz { margin: 1.75rem 0; }

.viz-label { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; margin-bottom: 0.4rem; font-family: var(--sans); font-size: 0.875rem; color: var(--muted); }

.budget { display: flex; height: 46px; border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; }
.budget > div { display: flex; align-items: center; justify-content: center; font-family: var(--sans); font-size: 0.8125rem; font-weight: 600; transition: width .12s linear; }
.budget-spent { background: var(--spent); color: var(--spent-ink); }
.budget-left { background: var(--left); color: var(--left-ink); }
.budget.over .budget-spent { background: var(--spent-over); color: #fff; }

.budget-control { display: none; align-items: center; gap: 0.75rem; margin-top: 1rem; font-family: var(--sans); font-size: 0.875rem; color: var(--muted); }
.budget-control.on { display: flex; }
.budget-control input[type=range] { flex: 1; accent-color: var(--accent); }
.budget-control output { min-width: 3.5rem; text-align: right; font-weight: 600; color: var(--fg); }

.bars { display: grid; grid-template-columns: 4.5rem 1fr; gap: 0.5rem 0.75rem; align-items: center; font-family: var(--sans); font-size: 0.875rem; color: var(--muted); }
.bar { height: 24px; border-radius: 4px; }
.bar-before { background: var(--spent); }
.bar-after { background: var(--good); }

/* split fleet — some replicas serving, some unable to start */
.fleet { display: flex; flex-wrap: wrap; gap: 6px; margin: 0.5rem 0; }
.pod { width: 34px; height: 34px; border-radius: 5px; display: flex; align-items: center; justify-content: center; font-family: var(--sans); font-size: 0.6875rem; font-weight: 700; }
.pod-ok { background: var(--left); color: var(--left-ink); }
.pod-bad { background: var(--spent); color: var(--spent-ink); }
.legend { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 0.6rem; font-family: var(--sans); font-size: 0.8125rem; color: var(--muted); }
.legend span::before { content: ""; display: inline-block; width: 11px; height: 11px; border-radius: 3px; margin-right: 0.45rem; vertical-align: baseline; }
.legend .ok::before { background: var(--left); }
.legend .bad::before { background: var(--spent); }

/* before / after pairs */
.compare { display: grid; gap: 0.85rem; margin: 0.5rem 0; }
.cmp-row { display: grid; grid-template-columns: 8.5rem 1fr; gap: 0.75rem; align-items: center; font-family: var(--sans); font-size: 0.875rem; }
.cmp-key { color: var(--muted); }
.cmp-val { display: flex; align-items: center; gap: 0.6rem; }
.chip { display: inline-block; padding: 0.3rem 0.7rem; border-radius: 5px; font-weight: 700; font-size: 0.875rem; }
.chip-was { background: var(--spent); color: var(--spent-ink); }
.chip-now { background: var(--left); color: var(--left-ink); }
.arrow { color: var(--muted); }

/* the old hand-off path vs the new one */
.track { display: grid; grid-template-columns: 5.5rem 1fr; gap: 0.5rem 0.75rem; align-items: center; font-family: var(--sans); font-size: 0.8125rem; color: var(--muted); }
.seg { display: flex; gap: 3px; align-items: center; }
.seg i { display: block; height: 26px; border-radius: 4px; font-style: normal; }
.seg .work { background: var(--spent); }
.seg .wait { background: var(--rule); }
.seg .fast { background: var(--good); }
.seg .t { margin-left: auto; padding-left: 0.6rem; white-space: nowrap; color: var(--fg); font-weight: 600; }

/* two-column calibration list */
.twocol { display: grid; gap: 1rem; margin: 0.5rem 0; }
@media (min-width: 34rem) { .twocol { grid-template-columns: 1fr 1fr; } }
.col { border-radius: 8px; padding: 0.9rem 1rem; }
.col-flag { background: var(--spent); color: var(--spent-ink); }
.col-ignore { background: var(--left); color: var(--left-ink); }
.col h3 { margin: 0 0 0.5rem; font-family: var(--sans); font-size: 0.8125rem; letter-spacing: 0.06em; text-transform: uppercase; }
.col ul { margin: 0; padding-left: 1.05rem; }
.col li { font-family: var(--sans); font-size: 0.875rem; line-height: 1.45; margin: 0.3rem 0; }

/* diagram node fills — set on <rect>, text stays currentColor */
.n-read { fill: var(--left); stroke: var(--left-ink); }
.n-act { fill: var(--spent); stroke: var(--spent-ink); }

footer {
  margin-top: 3.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9375rem;
  font-family: var(--sans);
}