/* Shared stylesheet for the static marketing pages (public/*.html).
   These pages are plain HTML served by the asset layer — no React, no
   Tailwind. Brand-matched to the app: Instrument Serif display, Source
   Sans 3 body, steel-blue accent (#2b4c7e), and the same .dark class +
   cl-theme localStorage contract as index.html so theme follows the app. */
:root {
  --bg: #f8f9fb;
  --card: #ffffff;
  --ink: #1a2432;
  --sub: #55647a;
  --accent: #2b4c7e;
  --accent-ink: #ffffff;
  --line: #dde3ea;
  --soft: #eef2f7;
  --good: #1a7f4f;
}
.dark {
  --bg: #0f151d;
  --card: #161e29;
  --ink: #e2e8f1;
  --sub: #98a6b8;
  --accent: #7ea6d9;
  --accent-ink: #0f151d;
  --line: #28374a;
  --soft: #1b2634;
  --good: #4cc38a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
}
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 780px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 0;
}
.brand {
  font-family: "Instrument Serif", Georgia, serif;
  font-size: 1.5rem;
  color: var(--ink);
  text-decoration: none;
}
.cta-link {
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
}
main { max-width: 720px; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
.eyebrow {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}
h1 {
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  font-size: 2.6rem;
  line-height: 1.1;
  margin: 0 0 1rem;
  text-wrap: balance;
}
.lede { font-size: 1.15rem; color: var(--sub); margin: 0 0 2rem; }
.lede strong { color: var(--ink); }
h2 {
  font-family: "Instrument Serif", Georgia, serif;
  font-weight: 400;
  font-size: 1.7rem;
  margin: 2.5rem 0 0.75rem;
  text-wrap: balance;
}
h3 { font-size: 1.05rem; font-weight: 700; margin: 1.5rem 0 0.4rem; }
p { margin: 0.6rem 0 1rem; }
ul, ol { margin: 0.5rem 0 1rem; padding-left: 1.3rem; }
li { margin: 0.4rem 0; }
li::marker { color: var(--accent); }
a { color: var(--accent); }

.tablewrap { overflow-x: auto; margin: 1rem 0 1.5rem; }
table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th {
  text-align: left;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--sub);
  border-bottom: 1px solid var(--line);
  padding: 0.5rem 0.9rem 0.5rem 0;
}
td { border-bottom: 1px solid var(--line); padding: 0.6rem 0.9rem 0.6rem 0; vertical-align: top; }
td:first-child { color: var(--sub); font-size: 0.9rem; }

.dm {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
  margin: 1.25rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.dm .msg { max-width: 85%; padding: 0.5rem 0.9rem; border-radius: 14px; font-size: 0.95rem; }
.dm .them { background: var(--soft); align-self: flex-start; border-bottom-left-radius: 4px; }
.dm .ai { background: var(--accent); color: var(--accent-ink); align-self: flex-end; border-bottom-right-radius: 4px; }
.dm .stamp {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  color: var(--sub);
  align-self: center;
}

.calc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.4rem 1.5rem;
  margin: 1.25rem 0;
}
.calc label { display: block; font-weight: 600; font-size: 0.95rem; margin-bottom: 0.35rem; }
.calc input[type="range"] { width: 100%; accent-color: var(--accent); }
.calc .readout { display: flex; gap: 2rem; flex-wrap: wrap; margin-top: 1rem; }
.calc .readout div span {
  display: block;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.7rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--sub);
}
.calc .readout div strong { font-size: 1.6rem; font-variant-numeric: tabular-nums; }
.calc .readout .save strong { color: var(--good); }

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 0.75rem 0;
}
.faq summary { font-weight: 700; cursor: pointer; }
.faq summary::marker { color: var(--accent); }
.faq p { color: var(--sub); margin: 0.5rem 0 0.25rem; }

.cta-panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.75rem;
  margin-top: 3rem;
  text-align: center;
}
.cta-panel h2 { margin-top: 0; }
.cta-panel .cta-link { display: inline-block; margin-top: 0.5rem; font-size: 1.05rem; padding: 0.65rem 1.5rem; }
.cta-panel .fine { font-size: 0.85rem; color: var(--sub); margin-top: 0.9rem; margin-bottom: 0; }

footer {
  border-top: 1px solid var(--line);
  padding: 2rem 1.25rem 3rem;
  font-size: 0.88rem;
  color: var(--sub);
}
footer .cols { max-width: 720px; margin: 0 auto; display: flex; gap: 3rem; flex-wrap: wrap; }
footer h4 {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
}
footer ul { list-style: none; margin: 0; padding: 0; }
footer li { margin: 0.3rem 0; }
footer a { color: var(--sub); text-decoration: none; }
footer a:hover { color: var(--ink); }
footer .legal { max-width: 720px; margin: 1.75rem auto 0; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}