/* Ground Truth — editorial "data desk" styling.
   Deliberately not a SaaS template: warm paper, ink, hairlines, footnotes.
   No gradients, no glass, no emoji-icons, no rounded-everything. */

:root {
  --paper:      #f3ede1;   /* warm newsprint */
  --paper-deep: #ece4d4;   /* slightly sunk panels */
  --ink:        #1d1a16;   /* near-black, warm */
  --ink-soft:   #4f483d;
  --ink-faint:  #8b8170;
  --rule:       #d5cab6;   /* hairlines */
  --accent:     #1f5c52;   /* deep teal */
  --worse:      #ad4a2c;   /* muted clay — "harder here" */
  --better:     #2f6f53;   /* muted green — "easier here" */
  --near:       #8a8170;   /* warm gray — "about the same" */
  --shadow:     rgba(40, 33, 22, 0.10);

  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

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

.wrap { width: min(64rem, 92vw); margin-inline: auto; }

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

/* ---- Masthead ---------------------------------------------------------- */
.masthead {
  border-bottom: 1px solid var(--rule);
  padding: clamp(1.5rem, 4vw, 3rem) 0 clamp(1.25rem, 3vw, 2rem);
}
.kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 0.6rem;
}
.nameplate {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(2.6rem, 8vw, 4.5rem);
  line-height: 0.98;
  letter-spacing: -0.015em;
  margin: 0;
}
.lede {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 2.4vw, 1.4rem);
  line-height: 1.4;
  max-width: 42ch;
  margin: 0.8rem 0 0;
  color: var(--ink-soft);
}
.lede em { font-style: italic; color: var(--ink); }

/* ---- Finder ------------------------------------------------------------ */
.finder { padding: clamp(1.5rem, 4vw, 2.5rem) 0 0.5rem; }
.field-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.5rem;
}
.field-row { display: flex; gap: 0.6rem; flex-wrap: wrap; }
#place-input {
  flex: 1 1 22rem;
  font-family: var(--serif);
  font-size: 1.25rem;
  padding: 0.7rem 0.9rem;
  background: #fbf7ee;
  border: 1.5px solid var(--ink);
  border-radius: 2px;
  color: var(--ink);
}
#place-input::placeholder { color: var(--ink-faint); font-style: italic; }
#place-input:focus { outline: 3px solid rgba(31, 92, 82, 0.25); outline-offset: 1px; }

#finder-go {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 1.05rem;
  padding: 0.7rem 1.5rem;
  background: var(--ink);
  color: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.12s ease;
}
#finder-go:hover { background: var(--accent); border-color: var(--accent); }

.field-help { font-size: 0.92rem; color: var(--ink-soft); margin: 0.7rem 0 0; }
.chip {
  font-family: var(--mono);
  font-size: 0.82rem;
  padding: 0.15rem 0.5rem;
  margin: 0 0.1rem;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink);
  cursor: pointer;
}
.chip:hover { border-color: var(--ink); }
.chip-ghost { background: none; border-style: dashed; }

/* ---- Intro ------------------------------------------------------------- */
.intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 3rem;
}
.h-rule {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.5rem;
  margin: 0 0 0.9rem;
  font-weight: 500;
}
.intro p { margin: 0 0 0.9rem; }
.intro-col p:first-of-type { font-size: 1.02rem; }
.plain-list { margin: 0; padding: 0; list-style: none; }
.plain-list li { padding: 0.55rem 0; border-bottom: 1px dotted var(--rule); }
.plain-list li:last-child { border-bottom: none; }

/* ---- Result: place header --------------------------------------------- */
.result { padding-bottom: 3rem; }
.place-head {
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  padding: 1rem 0 1.1rem;
  margin-top: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
}
.place-name { font-family: var(--serif); font-size: clamp(1.6rem, 4vw, 2.3rem); font-weight: 600; margin: 0; line-height: 1.05; }
.place-geo { font-family: var(--mono); font-size: 0.78rem; color: var(--ink-faint); letter-spacing: 0.04em; }

/* ---- Hero: The Gap ----------------------------------------------------- */
.hero {
  padding: 1.8rem 0 1.4rem;
  border-bottom: 1px solid var(--rule);
}
.hero-label {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.hero-headline {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 4.4vw, 2.5rem);
  line-height: 1.18;
  font-weight: 500;
  margin: 0.5rem 0 1.2rem;
  max-width: 26ch;
}
.hero-scale { max-width: 34rem; }
.scale-track {
  position: relative;
  height: 4px;
  background: linear-gradient(90deg, var(--better), var(--near) 50%, var(--worse));
  border-radius: 2px;
  margin: 1.4rem 0 0.4rem;
}
.scale-marker {
  position: absolute;
  top: 50%;
  width: 18px; height: 18px;
  border-radius: 50%;
  border: 3px solid var(--paper);
  box-shadow: 0 1px 4px var(--shadow);
  transform: translate(-50%, -50%);
}
.scale-ends { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 0.7rem; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.06em; }
.scale-mid { text-align: center; }
.hero-meta { font-size: 0.9rem; color: var(--ink-soft); margin: 1rem 0 0; }
.hero-meta .conf { font-family: var(--mono); text-transform: uppercase; font-size: 0.72rem; letter-spacing: 0.08em; padding: 0.1rem 0.45rem; border: 1px solid var(--rule); border-radius: 2px; }
.hero-wip { font-style: italic; color: var(--ink-faint); }

/* ---- Signals grid ------------------------------------------------------ */
.signals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--rule);
}
.signal {
  padding: 1.4rem clamp(1rem, 2vw, 1.6rem) 1.5rem;
  border-bottom: 1px solid var(--rule);
}
.signal:nth-child(odd) { border-right: 1px solid var(--rule); }
.signal-top { display: flex; align-items: baseline; justify-content: space-between; gap: 0.5rem; }
.signal-title { font-family: var(--serif); font-size: 1.3rem; font-weight: 600; margin: 0; }
.tag {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.12rem 0.4rem;
  border-radius: 2px;
  border: 1px solid currentColor;
  white-space: nowrap;
}
.tag-modeled { color: var(--worse); }
.tag-key { color: var(--ink-faint); }
.signal-plain { color: var(--ink-soft); font-size: 0.95rem; margin: 0.3rem 0 1rem; }

.figure { display: flex; align-items: baseline; gap: 0.6rem; flex-wrap: wrap; }
.figure-num { font-family: var(--serif); font-weight: 600; font-size: clamp(2rem, 6vw, 2.8rem); line-height: 1; letter-spacing: -0.01em; }
.figure-unit { font-size: 0.9rem; color: var(--ink-faint); }
.figure-vs { font-family: var(--mono); font-size: 0.8rem; color: var(--ink-soft); }

.cmp { display: inline-flex; align-items: center; gap: 0.35rem; font-family: var(--mono); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.05em; margin-top: 0.5rem; }
.cmp-dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.cmp-worse { color: var(--worse); } .cmp-worse .cmp-dot { background: var(--worse); }
.cmp-better { color: var(--better); } .cmp-better .cmp-dot { background: var(--better); }
.cmp-near { color: var(--near); } .cmp-near .cmp-dot { background: var(--near); }

.signal-read { font-size: 0.96rem; margin: 0.9rem 0 0; line-height: 1.55; }
.signal-foot {
  margin-top: 1rem;
  padding-top: 0.7rem;
  border-top: 1px dotted var(--rule);
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
  display: flex; flex-wrap: wrap; gap: 0.3rem 1rem;
}

/* needs-key / empty signal state */
.signal.is-locked { background: var(--paper-deep); }
.signal.is-locked .figure-num { color: var(--ink-faint); }
.keylink { color: var(--accent); font-weight: 600; }
.lock-note { font-size: 0.95rem; color: var(--ink-soft); margin: 0.4rem 0 0; }

/* ---- Backdrop strip ---------------------------------------------------- */
.backdrop { padding: 1.6rem 0 0.5rem; }
.backdrop h3 { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-faint); font-weight: 500; margin: 0 0 0.8rem; }
.backdrop-row { display: flex; flex-wrap: wrap; gap: 1.2rem 2.2rem; }
.bd-item { }
.bd-num { font-family: var(--serif); font-size: 1.5rem; font-weight: 600; }
.bd-num.muted { color: var(--ink-faint); }
.bd-label { font-size: 0.82rem; color: var(--ink-soft); }
.bd-src { font-family: var(--mono); font-size: 0.66rem; color: var(--ink-faint); }

/* ---- Notes / footnotes ------------------------------------------------- */
.notes { margin-top: 1.8rem; padding-top: 1rem; border-top: 1px solid var(--rule); }
.notes h3 { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); font-weight: 500; margin: 0 0 0.6rem; }
.notes ol { margin: 0; padding-left: 1.2rem; }
.notes li { font-size: 0.86rem; color: var(--ink-soft); margin-bottom: 0.4rem; }

/* ---- States ------------------------------------------------------------ */
.status-line { font-family: var(--mono); font-size: 0.85rem; color: var(--ink-soft); padding: 2rem 0; }
.status-line.error { color: var(--worse); }
.spinner { display: inline-block; width: 0.8em; height: 0.8em; border: 2px solid var(--rule); border-top-color: var(--ink); border-radius: 50%; animation: spin 0.7s linear infinite; vertical-align: middle; margin-right: 0.5rem; }
@keyframes spin { to { transform: rotate(360deg); } }
.is-loading { opacity: 0.55; transition: opacity 0.2s; }

/* ---- Footer ------------------------------------------------------------ */
.site-foot { border-top: 2px solid var(--ink); margin-top: 2rem; padding: 2rem 0 3rem; }
.foot-lead { font-family: var(--serif); font-size: 1.2rem; font-style: italic; margin: 0 0 0.6rem; }
.foot-sources, .foot-meta { font-size: 0.82rem; color: var(--ink-soft); margin: 0.3rem 0; }
.foot-meta { font-family: var(--mono); font-size: 0.74rem; color: var(--ink-faint); }

/* ---- Responsive -------------------------------------------------------- */
@media (max-width: 680px) {
  .intro { grid-template-columns: 1fr; }
  .signals { grid-template-columns: 1fr; }
  .signal:nth-child(odd) { border-right: none; }
  body { font-size: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .spinner { animation: none; }
  * { transition: none !important; }
}