/* Quorum — quorum.care
 *
 * Design tokens are ported verbatim from the shipped iOS app,
 * bryan-ios/bryan/Theme.swift (enum QuorumPalette / QuorumPaletteLight).
 * Both themes are the same product: warm dark is near-black under cream ink;
 * light is warm paper under dark ink, never a cold grey flip.
 *
 * The accent is the one token that cannot carry between themes — 0xC9A86B on
 * paper is ~1.9:1, so light substitutes a darker gold (4.59:1). QuorumThemeTests
 * asserts these ratios in the app; do not "unify" them here.
 */

:root {
  color-scheme: dark light;

  /* Dark — QuorumPalette */
  --bg: #0b0c0d;
  --surface-1: #131517;
  --surface-2: #1a1d20;
  --surface-3: #22262a;

  --rule: #2a2e33;
  --rule-strong: #3a3f46;
  --rule-faint: #1d2024;

  --ink: #e8e4d8;
  --ink-strong: #f4f0e6;
  --ink-mid: #b3aea2;
  --ink-muted: #807a6e;
  --ink-faint: #585348;

  --accent: #c9a86b;
  --accent-low: rgba(201, 168, 107, 0.18);

  --signal-alert: #c76a52;
  --signal-warn: #c8a45c;
  --signal-ok: #86b48e;
  --signal-info: #8fa6c4;

  /* Type */
  --font-display: "SF Pro Display", ui-sans-serif, -apple-system, system-ui, sans-serif;
  --font-sans: "SF Pro Text", ui-sans-serif, -apple-system, "Inter", system-ui, sans-serif;
  --font-serif: "New York", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;

  /* Measure & rhythm */
  --measure: 68ch;
  --gutter: clamp(1.5rem, 5vw, 4rem);
  --section-y: clamp(5rem, 11vw, 9.5rem);
}

@media (prefers-color-scheme: light) {
  :root {
    /* Light — QuorumPaletteLight */
    --bg: #faf8f3;
    --surface-1: #f3f0e8;
    --surface-2: #ebe7dc;
    --surface-3: #e2ddd0;

    --rule: #d8d2c2;
    --rule-strong: #bdb6a3;
    --rule-faint: #e8e4d8;

    --ink: #1f2124;
    --ink-strong: #0b0c0d;
    --ink-mid: #4a4e54;
    --ink-muted: #6b6659;
    --ink-faint: #8f8a7b;

    --accent: #8a6d2f;
    --accent-low: rgba(138, 109, 47, 0.14);

    --signal-alert: #a6432b;
    --signal-warn: #7d5f1c;
    --signal-ok: #2f6b44;
    --signal-info: #3c5c87;
  }
}

/* ---------------------------------------------------------------- reset */

*,
*::before,
*::after { box-sizing: border-box; }

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--ink-strong);
  font-weight: 600;
  letter-spacing: -0.021em;
  line-height: 1.1;
  text-wrap: balance;
  margin: 0;
}

p { text-wrap: pretty; }
a { color: inherit; }

::selection { background: var(--accent-low); color: var(--ink-strong); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ------------------------------------------------------------- skeleton */

.wrap {
  width: 100%;
  max-width: 74rem;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.measure { max-width: var(--measure); }

section { padding-block: var(--section-y); }

.section-rule { border-top: 1px solid var(--rule-faint); }

/* Small-caps section label. Gold is used sparingly enough that it always
   means "this is a landmark." */
.label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1.75rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.label::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--rule);
  max-width: 5rem;
}

.lede {
  font-size: clamp(1.15rem, 1.02rem + 0.55vw, 1.4rem);
  line-height: 1.5;
  color: var(--ink-mid);
  margin: 1.5rem 0 0;
}

.note {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

/* Footnote markers trace every claim back to a file. */
.cite {
  font-family: var(--font-mono);
  font-size: 0.78em;
  color: var(--ink-muted);
  white-space: nowrap;
}

/* ---------------------------------------------------------------- nav */

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.nav[data-scrolled="true"] { border-bottom-color: var(--rule-faint); }

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  height: 4.25rem;
}

.wordmark {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-strong);
  text-decoration: none;
}

.wordmark span { color: var(--accent); }

.nav__links {
  display: flex;
  gap: 2rem;
  font-size: 0.875rem;
  color: var(--ink-mid);
}

.nav__links a {
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav__links a:hover { color: var(--ink-strong); }

@media (max-width: 46rem) {
  .nav__links { display: none; }
}

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

.hero {
  padding-block: clamp(4.5rem, 13vw, 10rem) var(--section-y);
}

.hero h1 {
  font-size: clamp(2.4rem, 1.55rem + 4.1vw, 5rem);
  letter-spacing: -0.035em;
  max-width: 17ch;
}

.hero h1 em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.hero__sub {
  font-size: clamp(1.1rem, 1rem + 0.5vw, 1.35rem);
  line-height: 1.55;
  color: var(--ink-mid);
  max-width: 46ch;
  margin: 2rem 0 0;
}

.hero__meta {
  margin-top: 3.25rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule);
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 2.5rem;
  font-size: 0.83rem;
  color: var(--ink-muted);
}

.hero__meta b {
  color: var(--ink);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------- threshold */

.threshold {
  margin-top: 3rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--surface-1);
  padding: 1.5rem 1.5rem 1.25rem;
}

.threshold__canvas {
  display: block;
  width: 100%;
  height: 190px;
}

.threshold__foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-top: 1rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--rule-faint);
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.threshold__state {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--ink-mid);
}

.threshold__state[data-fired="true"] { color: var(--signal-ok); }

/* ------------------------------------------------------------- protocol */

.protocol {
  margin: 3.5rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  border-top: 1px solid var(--rule-faint);
}

.protocol li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 3.25rem 9rem 1fr;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.6rem 0;
  border-bottom: 1px solid var(--rule-faint);
}

.protocol li::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
}

.protocol h3 {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-strong);
}

.protocol p { margin: 0; color: var(--ink-mid); font-size: 0.96rem; }

@media (max-width: 46rem) {
  .protocol li {
    grid-template-columns: 2.5rem 1fr;
    gap: 0.4rem 1rem;
  }
  .protocol h3 { grid-column: 2; }
  .protocol p { grid-column: 2; }
}

/* ----------------------------------------------------------------- chat */

.chat {
  margin-top: 3.5rem;
  /* Track the text measure rather than the full grid — a wide card wrapped
     around a 60ch column reads as dead space. */
  max-width: 52rem;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: var(--surface-1);
  overflow: hidden;
}

.chat__bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.7rem 1.15rem;
  border-bottom: 1px solid var(--rule-faint);
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.chat__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal-ok);
  flex: none;
}

.chat__body { padding: 1.5rem; display: grid; gap: 1.4rem; }

.turn { display: grid; gap: 0.5rem; }

.turn__who {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.turn--axiom .turn__who { color: var(--accent); }

.turn p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink);
  max-width: 60ch;
}

.turn--user p { color: var(--ink-mid); }

.tool {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
  padding: 0.5rem 0.75rem;
  border-left: 2px solid var(--rule-strong);
  background: var(--surface-2);
  border-radius: 0 3px 3px 0;
}

.tool b { color: var(--ink-mid); font-weight: 500; }

/* --------------------------------------------------------------- refuse */

.refusals {
  margin: 3.5rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--rule-faint);
  border: 1px solid var(--rule-faint);
  border-radius: 4px;
  overflow: hidden;
}

.refusals li {
  background: var(--bg);
  padding: 1.75rem;
  display: grid;
  gap: 0.6rem;
}

@media (min-width: 52rem) {
  .refusals { grid-template-columns: 1fr 1fr; }
}

.refusals h3 {
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: flex;
  gap: 0.6rem;
  align-items: baseline;
}

.refusals h3::before {
  content: "\00d7";
  color: var(--signal-alert);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  flex: none;
}

.refusals p { margin: 0; font-size: 0.92rem; color: var(--ink-mid); }

.refusals q {
  display: block;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--ink);
  border-left: 2px solid var(--accent);
  padding-left: 0.95rem;
  quotes: none;
}

/* ---------------------------------------------------------------- table */

.methods {
  width: 100%;
  margin-top: 3.5rem;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.methods caption {
  caption-side: bottom;
  margin-top: 1.1rem;
  font-size: 0.8rem;
  color: var(--ink-muted);
  text-align: left;
  line-height: 1.55;
}

.methods th,
.methods td {
  text-align: left;
  padding: 0.95rem 1rem 0.95rem 0;
  border-bottom: 1px solid var(--rule-faint);
  vertical-align: baseline;
}

.methods thead th {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--ink-muted);
  border-bottom-color: var(--rule);
}

.methods tbody th {
  font-weight: 600;
  color: var(--ink-strong);
  white-space: nowrap;
  padding-right: 1.75rem;
}

.methods td { color: var(--ink-mid); }

.methods td:last-child {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-muted);
  white-space: nowrap;
}

.table-scroll { overflow-x: auto; }

/* --------------------------------------------------------------- stats */

.stats {
  margin: 3.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 2rem 3rem;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
}

.stats > div { display: grid; gap: 0.4rem; }

.stats dt {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 1.5rem + 1.6vw, 2.6rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.stats dd {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--ink-mid);
}

/* --------------------------------------------------------------- quote */

.pull {
  margin: 3.5rem 0 0;
  padding: 0 0 0 1.5rem;
  border-left: 2px solid var(--accent);
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 1.05rem + 0.7vw, 1.6rem);
  font-style: italic;
  line-height: 1.45;
  color: var(--ink-strong);
  max-width: 34ch;
}

.pull footer {
  margin-top: 1rem;
  font-family: var(--font-sans);
  font-style: normal;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--ink-muted);
}

/* --------------------------------------------------------------- prose */

.prose > p { margin: 1.4rem 0 0; }
.prose > p:first-child { margin-top: 0; }
.prose strong { color: var(--ink-strong); font-weight: 600; }

.facts {
  margin: 3rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--rule-faint);
}

.facts li {
  background: var(--bg);
  padding: 1.15rem 0 1.15rem 1.6rem;
  position: relative;
  font-size: 0.94rem;
  color: var(--ink-mid);
}

.facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.6rem;
  width: 6px;
  height: 1px;
  background: var(--accent);
}

.facts b { color: var(--ink-strong); font-weight: 600; }

/* ----------------------------------------------------------------- cta */

.cta { text-align: center; }

.cta h2 {
  font-size: clamp(1.8rem, 1.4rem + 1.9vw, 3rem);
  max-width: 20ch;
  margin-inline: auto;
}

.btn {
  display: inline-block;
  margin-top: 2.5rem;
  padding: 0.85rem 2.1rem;
  border: 1px solid var(--accent);
  border-radius: 3px;
  background: transparent;
  color: var(--accent);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease;
}

.btn:hover { background: var(--accent-low); }

/* -------------------------------------------------------------- footer */

.footer {
  border-top: 1px solid var(--rule-faint);
  padding-block: 3rem;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.25rem 2rem;
}

.footer nav { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.footer a { text-decoration: none; transition: color 0.15s ease; }
.footer a:hover { color: var(--ink); }

.footer__legal { max-width: 52ch; line-height: 1.6; }

/* --------------------------------------------------------------- reveal */

[data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal].is-in { opacity: 1; transform: none; }

/* No JS, or reduced motion: content must never be hidden. */
.no-js [data-reveal],
[data-reveal].is-static { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------------------------------------------------------------- legal
 *
 * Long-form legal documents (privacy, user agreement). Readable measure,
 * clear hierarchy, same editorial palette as the rest of the site.
 */

.legal-main { padding-block: clamp(3rem, 7vw, 5.5rem) clamp(4rem, 9vw, 7rem); }

.legal-doc { max-width: 44rem; }

.legal-doc h1 {
  font-size: clamp(2rem, 1.5rem + 2.2vw, 3rem);
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.legal-meta {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin: 0 0 0.4rem;
}

.legal-intro {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink-mid);
  margin: 1.75rem 0 0;
}

.legal-toc {
  margin: 2.5rem 0 0;
  padding: 1.5rem 1.5rem 1.5rem;
  border: 1px solid var(--rule-faint);
  border-radius: 4px;
  background: var(--surface-1);
}

.legal-toc h2 {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 0.9rem;
}

.legal-toc ol {
  margin: 0;
  padding-left: 1.2rem;
  columns: 2;
  column-gap: 2rem;
  font-size: 0.9rem;
  line-height: 1.9;
}

.legal-toc a { color: var(--ink-mid); text-decoration: none; }
.legal-toc a:hover { color: var(--accent); }

@media (max-width: 40rem) { .legal-toc ol { columns: 1; } }

.legal-doc h2 {
  font-size: 1.3rem;
  letter-spacing: -0.015em;
  margin: 3rem 0 0;
  padding-top: 1.75rem;
  border-top: 1px solid var(--rule-faint);
  scroll-margin-top: 5.5rem;
}

.legal-doc h3 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink-strong);
  margin: 1.9rem 0 0;
}

.legal-doc p { margin: 1.15rem 0 0; color: var(--ink); }
.legal-doc p:first-of-type { margin-top: 1.4rem; }
.legal-doc strong { color: var(--ink-strong); font-weight: 600; }

.legal-doc ul { margin: 1rem 0 0; padding-left: 1.3rem; }
.legal-doc li { margin: 0.5rem 0 0; color: var(--ink); }

/* A framed callout for the load-bearing disclaimers (no medical advice, AI
   limitations). Uses the muted terracotta signal — never an alarm red. */
.legal-callout {
  margin: 2rem 0 0;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--signal-alert);
  border-radius: 4px;
  background: var(--surface-1);
}

.legal-callout p { margin: 0.7rem 0 0; }
.legal-callout p:first-child { margin-top: 0; }
.legal-callout strong { color: var(--signal-alert); }

.legal-doc .legal-updated {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule-faint);
  font-size: 0.82rem;
  color: var(--ink-muted);
}