/* Founder OS — the whole visual job is one thing: make the line between
   "we found this" and "we guessed this" impossible to miss. */

:root {
  --bg: #fbfaf8;
  --surface: #ffffff;
  --ink: #14140f;
  --ink-2: #4a4a42;
  --ink-3: #85857a;
  --line: #e3e1da;
  --accent: #1a5e46;
  --accent-soft: #e8f2ed;
  --warn: #8a5a12;
  --warn-soft: #fbf2e0;
  --radius: 10px;
  --measure: 44rem;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12120f;
    --surface: #1a1a16;
    --ink: #f2f0ea;
    --ink-2: #b9b7ae;
    --ink-3: #86847b;
    --line: #2e2e28;
    --accent: #6bc9a0;
    --accent-soft: #172a22;
    --warn: #d9ad63;
    --warn-soft: #2a2318;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

main { max-width: var(--measure); margin: 0 auto; padding: 0 1.25rem 5rem; }

a { color: inherit; }

/* ---------- chrome ---------- */

header.site {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-weight: 600;
  letter-spacing: -.01em;
  text-decoration: none;
}

.brand .mark {
  width: 11px; height: 11px;
  border-radius: 3px;
  background: var(--accent);
}

header.site nav a {
  color: var(--ink-3);
  text-decoration: none;
  font-size: .92rem;
}
header.site nav a:hover { color: var(--ink); }

footer.site {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: .88rem;
}

.dim { color: var(--ink-3); font-weight: 400; }

/* ---------- hero ---------- */

.hero { padding: 2.5rem 0 1rem; }
.hero.narrow { max-width: 34rem; }

h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -.025em;
  margin: 0 0 .75rem;
}

.lede { color: var(--ink-2); margin: 0 0 1.75rem; }

.ask textarea,
.again textarea {
  width: 100%;
  padding: .9rem 1rem;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  resize: vertical;
}

.ask textarea:focus,
.again textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: transparent;
}

.ask-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: .75rem;
}

button[type="submit"], .btn {
  font: inherit;
  font-weight: 550;
  padding: .6rem 1.25rem;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--bg);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button[type="submit"]:hover, .btn:hover { filter: brightness(1.08); }
button[type="submit"][disabled] { opacity: .55; cursor: progress; }

.hint, .note { color: var(--ink-3); font-size: .88rem; }
.note { margin-top: .85rem; }

.warn {
  color: var(--warn);
  background: var(--warn-soft);
  padding: .6rem .9rem;
  border-radius: 8px;
  font-size: .92rem;
}

.examples {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.example {
  font: inherit;
  font-size: .85rem;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .35rem .8rem;
  cursor: pointer;
}
.example:hover { border-color: var(--accent); color: var(--ink); }

/* ---------- source chips ---------- */

.eyebrow {
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--ink-3);
  margin: 0 0 .7rem;
  font-weight: 600;
}

.sources { margin: 3rem 0; }

.chips {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}

.chip {
  font-size: .84rem;
  padding: .3rem .7rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-2);
  display: inline-flex;
  gap: .4rem;
}
.chip.on { border-color: var(--accent); color: var(--ink); }
.chip.off, .chip.empty { opacity: .6; }
.chip.fail { border-color: var(--warn); color: var(--warn); }

/* ---------- the evidence / inference distinction ---------- */

.tag {
  font-size: .68rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: .07em;
  padding: .18rem .5rem;
  border-radius: 5px;
  vertical-align: middle;
  white-space: nowrap;
}
.tag.ev { background: var(--accent-soft); color: var(--accent); }
.tag.inf { background: var(--warn-soft); color: var(--warn); }

.how { margin: 3.5rem 0; }
.how-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  margin-top: 1rem;
}
.how-card {
  padding: 1.1rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface);
}
.how-card p { margin: .6rem 0 0; font-size: .93rem; color: var(--ink-2); }
.how-card.evidence { border-left: 3px solid var(--accent); }
.how-card.inference { border-left: 3px solid var(--warn); }

/* ---------- result ---------- */

.result-head { padding: 2rem 0 1rem; }
.result-head h1 { font-size: clamp(1.5rem, 4vw, 2rem); }

.verdict {
  margin: 1.5rem 0;
  padding: 1.15rem 1.25rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
}
.verdict .headline { margin: 0; font-size: 1.12rem; font-weight: 550; }
.verdict .conf {
  margin: .6rem 0 0;
  font-size: .87rem;
  color: var(--ink-3);
  display: flex;
  align-items: baseline;
  gap: .45rem;
}
.verdict .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ink-3);
  flex: none;
  transform: translateY(-1px);
}
.conf-high .dot { background: var(--accent); }
.conf-medium .dot { background: var(--warn); }

.meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  padding: 0;
  margin: 0 0 .9rem;
  font-size: .87rem;
  color: var(--ink-3);
}
.chips.small .chip { font-size: .78rem; }

.block {
  margin: 2.5rem 0;
  padding-left: 1rem;
  border-left: 3px solid var(--line);
}
.block.evidence { border-left-color: var(--accent); }
.block.inference { border-left-color: var(--warn); }

.block h2 {
  font-size: 1.15rem;
  letter-spacing: -.015em;
  margin: 0 0 .5rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-wrap: wrap;
}

.disclaimer {
  margin: 0 0 .9rem;
  font-size: .87rem;
  color: var(--warn);
}

.items { list-style: none; padding: 0; margin: 0; }
.items > li { margin-bottom: 1.35rem; }
.items > li > p { margin: 0 0 .5rem; }

.cites { list-style: none; padding: 0; margin: 0; display: grid; gap: .3rem; }

.cite {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  font-size: .82rem;
  color: var(--ink-3);
  text-decoration: none;
  padding: .28rem .5rem;
  border-radius: 6px;
  border: 1px solid transparent;
}
.cite:hover { border-color: var(--line); background: var(--surface); color: var(--ink); }
.cite .src {
  font-family: var(--mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--accent);
  flex: none;
}
.cite .ttl { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cite .dt { margin-left: auto; flex: none; font-variant-numeric: tabular-nums; }

/* ---------- browse index ---------- */

.idea-list { list-style: none; padding: 0; margin: 2rem 0 0; }
.idea-list > li { border-top: 1px solid var(--line); }
.idea-list > li:last-child { border-bottom: 1px solid var(--line); }

.idea-list a {
  display: block;
  padding: 1.1rem .4rem;
  text-decoration: none;
}
.idea-list a:hover { background: var(--surface); }
.idea-list h2 {
  font-size: 1.02rem;
  font-weight: 550;
  letter-spacing: -.01em;
  margin: 0 0 .3rem;
}
.idea-list p { margin: 0; font-size: .92rem; color: var(--ink-2); }
.idea-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem;
  margin-top: .45rem !important;
  font-size: .8rem !important;
  color: var(--ink-3) !important;
}

.pager {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  font-size: .9rem;
  color: var(--ink-3);
}
.pager a { color: var(--ink); text-decoration: none; }
.pager a:hover { color: var(--accent); }

.related {
  margin-top: 3.5rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}
.related h2 { font-size: 1.05rem; margin: 0 0 .75rem; }
.related ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: .4rem;
}
.related a { color: var(--ink-2); text-decoration: none; font-size: .93rem; }
.related a:hover { color: var(--accent); }

.again {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}
.again h2 { font-size: 1.05rem; margin: 0 0 .8rem; }
.again button { margin-top: .7rem; }

@media (max-width: 30rem) {
  body { font-size: 16px; }
  .cite .dt { display: none; }
}