/* ==========================================================================
   Longevity Marathon — shared stylesheet
   A field notebook for a personal health experiment, not a fitness app or
   SaaS landing page. See /design.md for the aesthetic brief this implements.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Warm off-white "paper" palette, not clinical white / not dark-mode-first */
  --color-bg: #f5f0e4;
  --color-bg-raised: #efe8d6;
  --color-bg-raised-2: #e8dfc8;
  --color-ink: #26221c;
  --color-ink-soft: #565042;
  --color-ink-faint: #655e49; /* darkened from a lighter draft value to clear WCAG AA (4.5:1) at small sizes on --color-bg and --color-bg-raised-2 */
  --color-rule: #d9cfb4;
  --color-rule-strong: #c2b593;

  --color-accent: #3e6e64;       /* desaturated teal — links, selected data, markers */
  --color-accent-ink: #234942;
  --color-accent-soft: #dce7e1;
  --color-accent-soft-border: #b9cec6;

  --color-flag: #97552f;         /* restrained rust — pain / warning signals, used sparingly */
  --color-flag-soft: #f0ddc9;

  --color-white: #fffdf7;

  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "Noto Serif", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --content-max: 46rem;
  --wide-max: 74rem;

  --radius: 3px;
  --focus-ring: 3px solid #1f5c52;
}

@media (prefers-reduced-motion: no-preference) {
  :root { --transition-fast: 120ms ease; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

/* ---------- Reset-ish base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-serif);
  font-size: 1.0625rem;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }
svg { max-width: 100%; }
table { border-collapse: collapse; width: 100%; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.22;
  color: var(--color-ink);
  margin: 0 0 0.6em;
}
p { margin: 0 0 1.1em; }
a { color: var(--color-accent-ink); text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { color: var(--color-accent); }
ul, ol { padding-left: 1.3em; }
small, .text-small { font-size: 0.88rem; }
strong { font-weight: 700; }
hr { border: none; border-top: 1px solid var(--color-rule); margin: 2.5rem 0; }

:focus-visible { outline: var(--focus-ring); outline-offset: 2px; }
:focus:not(:focus-visible) { outline: none; }

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.sans { font-family: var(--font-sans); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute; left: 1rem; top: -3rem;
  background: var(--color-ink); color: var(--color-white);
  padding: 0.6rem 1rem; border-radius: var(--radius); z-index: 100;
  font-family: var(--font-sans); font-size: 0.9rem;
  transition: top var(--transition-fast, 120ms) ease;
}
.skip-link:focus { top: 1rem; }

/* ---------- Layout shells ---------- */
.container {
  max-width: var(--wide-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.prose-col {
  max-width: var(--content-max);
}
main { display: block; }

/* ---------- Header / nav ---------- */
.site-header {
  border-bottom: 1px solid var(--color-rule);
  background: var(--color-bg);
  position: relative;
}
.site-header__inner {
  max-width: var(--wide-max);
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--color-ink);
  text-decoration: none;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 0.45em;
}
.brand:hover { color: var(--color-ink); }
.brand__mark { color: var(--color-accent); }
.brand__sub {
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 0.7rem;
  color: var(--color-ink-faint);
  letter-spacing: 0.02em;
}

.nav-toggle {
  display: none;
  font-family: var(--font-sans);
  background: none;
  border: 1px solid var(--color-rule-strong);
  border-radius: var(--radius);
  padding: 0.4rem 0.7rem;
  font-size: 0.95rem;
  color: var(--color-ink);
  cursor: pointer;
}

.site-nav { display: flex; align-items: center; gap: 1.4rem; }
.site-nav__list {
  display: flex;
  gap: 1.35rem;
  list-style: none;
  margin: 0; padding: 0;
  font-family: var(--font-sans);
  font-size: 0.94rem;
}
.site-nav__list a {
  color: var(--color-ink-soft);
  text-decoration: none;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
.site-nav__list a:hover { color: var(--color-ink); }
.site-nav__list a[aria-current="page"] {
  color: var(--color-ink);
  border-bottom-color: var(--color-accent);
  font-weight: 700;
}
.nav-cta {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-accent-ink);
  border: 1px solid var(--color-accent-soft-border);
  background: var(--color-accent-soft);
  padding: 0.42rem 0.85rem;
  border-radius: var(--radius);
  text-decoration: none;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--color-accent-soft-border); color: var(--color-accent-ink); }

@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }
  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-bg); border-bottom: 1px solid var(--color-rule);
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 0.5rem 1.5rem 1.2rem;
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav__list { flex-direction: column; gap: 0; }
  .site-nav__list a { display: block; padding: 0.65rem 0; border-bottom: 1px solid var(--color-rule); }
  .site-nav__list a[aria-current="page"] { border-bottom: 1px solid var(--color-accent); }
  .nav-cta { margin-top: 0.8rem; text-align: center; }
}

/* ---------- Eyebrow / timeline-marker label ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-ink);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  margin-bottom: 0.9rem;
}
.eyebrow::before { content: "◆"; font-size: 0.6em; color: var(--color-accent); }
.eyebrow--muted { color: var(--color-ink-faint); }
.eyebrow--muted::before { color: var(--color-ink-faint); }

/* ---------- Hero ---------- */
.hero {
  padding: 3.6rem 0 3rem;
  border-bottom: 1px solid var(--color-rule);
}
.hero h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(1.9rem, 4.4vw, 2.9rem);
  max-width: 20ch;
  margin-bottom: 0.7rem;
  letter-spacing: -0.01em;
}
.hero__lede {
  font-size: 1.18rem;
  max-width: 42em;
  color: var(--color-ink-soft);
}
.hero__actions {
  display: flex; flex-wrap: wrap; gap: 1rem 1.6rem; margin-top: 1.6rem;
  font-family: var(--font-sans);
}

/* ---------- Buttons / links-as-actions ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5em;
  font-family: var(--font-sans); font-weight: 700; font-size: 0.95rem;
  text-decoration: none; padding: 0.68rem 1.1rem; border-radius: var(--radius);
  border: 1px solid transparent; cursor: pointer;
}
.btn-primary { background: var(--color-ink); color: var(--color-white); border-color: var(--color-ink); }
.btn-primary:hover { background: #3a352b; color: var(--color-white); }
.btn-secondary {
  background: transparent; color: var(--color-ink); border-color: var(--color-rule-strong);
}
.btn-secondary:hover { border-color: var(--color-ink); color: var(--color-ink); }
.text-link {
  font-family: var(--font-sans); font-weight: 700; font-size: 0.95rem;
  color: var(--color-accent-ink); text-decoration: none;
  border-bottom: 2px solid var(--color-accent-soft-border);
}
.text-link:hover { border-bottom-color: var(--color-accent); color: var(--color-accent-ink); }
.text-link--arrow::after { content: " →"; }

/* ---------- Sections & rhythm ---------- */
.section { padding: 3rem 0; border-bottom: 1px solid var(--color-rule); }
.section:last-of-type { border-bottom: none; }
.section__head { max-width: 42em; margin-bottom: 1.6rem; }
.section h2 {
  font-family: var(--font-sans); font-size: 1.5rem;
}
.section__intro { color: var(--color-ink-soft); font-family: var(--font-sans); font-size: 1.02rem; }

/* ---------- Glance stat strip ---------- */
.stat-strip {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 1.4rem 1.8rem; margin-top: 1.6rem;
  font-family: var(--font-sans);
}
.stat {
  border-top: 2px solid var(--color-rule-strong);
  padding-top: 0.6rem;
}
.stat__label { font-size: 0.78rem; color: var(--color-ink-faint); text-transform: uppercase; letter-spacing: 0.04em; }
/* Sans by default — mono is notation for actual data (a measurement, count, or date), added
   via the shared .mono utility class only where that's true. See design.md §4. */
.stat__value { font-family: var(--font-sans); font-weight: 700; font-size: 1.5rem; color: var(--color-ink); display: block; margin-top: 0.2rem; }
.stat__value.mono { font-weight: 400; }
.stat__value--muted { color: var(--color-ink-faint); font-size: 1.1rem; }
.stat__note { font-size: 0.82rem; color: var(--color-ink-faint); margin-top: 0.15rem; }

/* ---------- Cards (the exception, not the default) ---------- */
.card {
  border: 1px solid var(--color-rule); border-radius: var(--radius);
  background: var(--color-white); padding: 1.4rem 1.5rem;
}
.card-grid { display: grid; gap: 1.3rem; }
.card-grid--2 { grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
.card-grid--3 { grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }

/* Journal / entry cards */
.entry-card {
  border-top: 1px solid var(--color-rule);
  padding: 1.6rem 0;
  display: grid;
  gap: 0.5rem;
}
.entry-card:first-child { border-top: none; }
.entry-card__meta {
  font-family: var(--font-sans); font-size: 0.82rem; color: var(--color-ink-faint);
  display: flex; flex-wrap: wrap; gap: 0.55em 0.9em; align-items: center;
}
.entry-card__title { font-family: var(--font-serif); font-size: 1.4rem; margin: 0; }
.entry-card__title a { color: var(--color-ink); text-decoration: none; }
.entry-card__title a:hover { color: var(--color-accent-ink); }
.entry-card__deck { color: var(--color-ink-soft); max-width: 55em; }
.entry-card__data {
  font-family: var(--font-mono); font-size: 0.86rem; color: var(--color-ink-soft);
  display: flex; flex-wrap: wrap; gap: 0.4em 1.1em; margin-top: 0.2rem;
}

.pill {
  font-family: var(--font-sans); font-size: 0.74rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.03em;
  padding: 0.22rem 0.55rem; border-radius: 999px;
  border: 1px solid var(--color-rule-strong); color: var(--color-ink-soft);
  background: var(--color-bg-raised); white-space: nowrap;
}
.pill--type-run { border-color: #b9cec6; background: var(--color-accent-soft); color: var(--color-accent-ink); }
.pill--type-reflection { border-color: var(--color-rule-strong); }
.pill--type-plan { border-color: #cbb98f; background: #f0e6cc; color: #6b5726; }
.pill--type-explainer { border-color: #b8b2d6; background: #e7e3f6; color: #453c86; }
.pill--type-test { border-color: #a9c7d6; background: #dcedf5; color: #285873; }
a.pill { text-decoration: none; }
a.pill:hover { border-color: var(--color-ink); color: var(--color-ink); }

.tag-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }

/* ---------- Filters ---------- */
.filters {
  font-family: var(--font-sans); font-size: 0.9rem;
  display: flex; flex-wrap: wrap; gap: 1.6rem;
  padding: 1.1rem 0; border-bottom: 1px solid var(--color-rule); margin-bottom: 0.5rem;
}
.filter-group { display: flex; flex-direction: column; gap: 0.4rem; }
.filter-group__label { font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-ink-faint); }
.filter-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip {
  font-family: var(--font-sans); font-size: 0.83rem;
  border: 1px solid var(--color-rule-strong); background: var(--color-white);
  padding: 0.32rem 0.7rem; border-radius: 999px; cursor: pointer; color: var(--color-ink-soft);
}
.chip[aria-pressed="true"] { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-white); }
.filters__reset { align-self: flex-end; }

/* ---------- Awaiting Data / Coming Soon ---------- */
.state-card {
  border: 1px dashed var(--color-rule-strong);
  border-radius: var(--radius);
  background: var(--color-bg-raised);
  padding: 1.5rem 1.6rem;
}
.state-card__kicker {
  font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--color-ink-faint); margin-bottom: 0.5rem;
}
.state-card h3, .state-card h2 { margin-bottom: 0.5rem; }
.state-card dl { font-family: var(--font-sans); font-size: 0.92rem; margin: 1rem 0 0; }
.state-card dt { font-weight: 700; color: var(--color-ink); margin-top: 0.7rem; }
.state-card dd { margin: 0.15rem 0 0; color: var(--color-ink-soft); }
.state-card__actions { margin-top: 1.1rem; display: flex; flex-wrap: wrap; gap: 1rem; }

/* ---------- Evidence note ---------- */
.evidence-note {
  border-left: 3px solid var(--color-accent);
  padding: 0.2rem 0 0.2rem 1.1rem;
  margin: 1.5rem 0;
  font-family: var(--font-sans); font-size: 0.94rem; color: var(--color-ink-soft);
}
.evidence-note__label {
  display: block; font-family: var(--font-mono); font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-accent-ink); margin-bottom: 0.35rem;
}
.evidence-list { list-style: none; padding: 0; margin: 0; font-size: 0.92rem; }
.evidence-list li { padding: 0.7rem 0; border-top: 1px solid var(--color-rule); }
.evidence-list li:first-child { border-top: none; }
.evidence-list cite { font-style: normal; font-weight: 700; }

/* ---------- Commentary / quote card (Dr. Reddy voice) ---------- */
.commentary-card {
  border: 1px solid var(--color-rule-strong);
  border-left: 4px solid var(--color-ink-faint);
  border-radius: var(--radius);
  background: var(--color-white);
  padding: 1.3rem 1.5rem;
}
.commentary-card--pending { border-left-color: var(--color-ink-faint); }
.commentary-card__by {
  font-family: var(--font-sans); font-weight: 700; font-size: 0.88rem; color: var(--color-ink);
  display: flex; align-items: center; gap: 0.5em; margin-bottom: 0.5rem;
}
.commentary-card__role { font-weight: 400; color: var(--color-ink-faint); font-size: 0.84rem; }

/* ---------- Disagreement sequence ---------- */
.sequence {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  border: 1px solid var(--color-rule); border-radius: var(--radius); overflow: hidden;
}
.sequence__step {
  padding: 1.2rem 1.3rem; border-left: 1px solid var(--color-rule); background: var(--color-white);
}
.sequence__step:first-child { border-left: none; }
.sequence__num {
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-ink-faint);
  display: block; margin-bottom: 0.4rem;
}
.sequence__label { font-family: var(--font-sans); font-weight: 700; font-size: 0.95rem; margin-bottom: 0.5rem; }
.sequence__body { font-size: 0.94rem; color: var(--color-ink-soft); }
.sequence__step--pending { background: var(--color-bg-raised); }
.sequence__step--pending .sequence__body { font-style: italic; color: var(--color-ink-faint); }
@media (max-width: 780px) {
  .sequence { grid-template-columns: 1fr; }
  .sequence__step { border-left: none; border-top: 1px solid var(--color-rule); }
  .sequence__step:first-child { border-top: none; }
}

/* ---------- Revision marks (design.md §6: a struck-through old value next to the current
   one). Deliberately no green/red color-coding — a revision isn't good or bad, just changed. */
del.revision-old {
  color: var(--color-ink-faint);
  text-decoration: line-through;
  text-decoration-color: var(--color-ink-faint);
  font-style: normal;
}
ins.revision-new {
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 700;
}

/* ---------- Timeline (plan revisions) ---------- */
.timeline { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--color-rule-strong); }
.timeline__item { position: relative; padding: 0 0 2rem 1.6rem; }
.timeline__item::before {
  content: ""; position: absolute; left: -6.5px; top: 0.35rem;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--color-accent); border: 2px solid var(--color-bg);
}
.timeline__item:last-child { padding-bottom: 0; }
.timeline__date { font-family: var(--font-mono); font-size: 0.82rem; color: var(--color-ink-faint); }
.timeline__title { font-family: var(--font-sans); font-weight: 700; font-size: 1.05rem; margin: 0.2rem 0 0.4rem; }

/* ---------- Bar chart (planned mileage etc.) ---------- */
.barchart { font-family: var(--font-sans); }
.barchart__rows { display: flex; flex-direction: column; gap: 0.42rem; margin: 1.2rem 0; }
.barchart__row { display: grid; grid-template-columns: 4.4rem 1fr 3.6rem; align-items: center; gap: 0.7rem; font-size: 0.82rem; }
.barchart__label { color: var(--color-ink-soft); font-family: var(--font-mono); }
.barchart__track { background: var(--color-bg-raised-2); border-radius: 2px; height: 0.85rem; overflow: hidden; }
.barchart__fill { background: var(--color-accent); height: 100%; border-radius: 2px; }
.barchart__fill--cutback { background: #9fb8b0; }
.barchart__val { font-family: var(--font-mono); color: var(--color-ink-faint); text-align: right; }
.barchart__legend { font-size: 0.82rem; color: var(--color-ink-faint); display: flex; gap: 1.4rem; margin-top: 0.6rem; }
.legend-swatch { display: inline-block; width: 0.7em; height: 0.7em; border-radius: 2px; margin-right: 0.4em; vertical-align: middle; }

/* ---------- Data tables ---------- */
.data-table { font-family: var(--font-sans); font-size: 0.9rem; margin: 1.2rem 0; }
.data-table th, .data-table td {
  text-align: left; padding: 0.55rem 0.8rem; border-bottom: 1px solid var(--color-rule);
}
.data-table thead th {
  font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.03em;
  color: var(--color-ink-faint); border-bottom: 2px solid var(--color-rule-strong);
}
.data-table td.mono, .data-table th.mono { font-family: var(--font-mono); }
.data-table tbody tr.is-cutback td { color: var(--color-ink-faint); font-style: italic; }
.table-scroll { overflow-x: auto; border: 1px solid var(--color-rule); border-radius: var(--radius); }
.table-scroll table { margin: 0; }
.table-scroll th, .table-scroll td { white-space: nowrap; }

/* ---------- Margin notes / annotated document layout ---------- */
.doc-layout {
  display: grid; grid-template-columns: minmax(0, var(--content-max)) minmax(0, 16rem);
  gap: 3rem; align-items: start;
}
.doc-layout__main { min-width: 0; }
.doc-layout__margin { display: flex; flex-direction: column; gap: 1.4rem; position: sticky; top: 1.5rem; }
@media (max-width: 900px) {
  .doc-layout { grid-template-columns: 1fr; }
  .doc-layout__margin { position: static; }
}
.margin-note {
  font-family: var(--font-sans); font-size: 0.85rem; color: var(--color-ink-soft);
  border-left: 2px solid var(--color-rule-strong); padding-left: 0.9rem;
}
.margin-note__label { display: block; font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-ink-faint); margin-bottom: 0.3rem; }
.margin-note__value { font-family: var(--font-mono); font-size: 1rem; color: var(--color-ink); }

/* ---------- Article body ---------- */
.article-head { padding: 2.6rem 0 1.6rem; border-bottom: 1px solid var(--color-rule); }
.article-head h1 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); max-width: 22ch; }
.article-head__deck { font-size: 1.14rem; color: var(--color-ink-soft); max-width: 42em; }
.article-meta {
  font-family: var(--font-sans); font-size: 0.85rem; color: var(--color-ink-faint);
  display: flex; flex-wrap: wrap; gap: 0.5em 1em; align-items: center; margin: 1rem 0;
}
.article-body { padding: 2.4rem 0; }
.article-body h2 { font-size: 1.4rem; margin-top: 2rem; }
.article-body h3 { font-size: 1.15rem; margin-top: 1.6rem; font-family: var(--font-sans); }
.article-body p, .article-body li { max-width: 40em; }
.article-body figure { margin: 2rem 0; }
.article-body figcaption { font-family: var(--font-sans); font-size: 0.85rem; color: var(--color-ink-faint); margin-top: 0.6rem; }
.update-note {
  font-family: var(--font-sans); font-size: 0.88rem; background: var(--color-accent-soft);
  border: 1px solid var(--color-accent-soft-border); border-radius: var(--radius);
  padding: 0.8rem 1rem; margin: 1.5rem 0; color: var(--color-accent-ink);
}
.disclaimer-note {
  font-family: var(--font-sans); font-size: 0.86rem; color: var(--color-ink-faint);
  border-top: 1px solid var(--color-rule); padding-top: 1rem; margin-top: 2rem;
}
.related-list { list-style: none; padding: 0; margin: 1rem 0; display: grid; gap: 0.8rem; }
.related-list a { font-family: var(--font-sans); font-weight: 700; text-decoration: none; color: var(--color-ink); }
.related-list a:hover { color: var(--color-accent-ink); }
.related-list span { display: block; font-family: var(--font-sans); font-weight: 400; font-size: 0.85rem; color: var(--color-ink-faint); }
.entry-nav { display: flex; justify-content: space-between; gap: 1.5rem; padding: 1.6rem 0; border-top: 1px solid var(--color-rule); font-family: var(--font-sans); }
.entry-nav a { text-decoration: none; }
.entry-nav__dir { display: block; font-size: 0.76rem; text-transform: uppercase; color: var(--color-ink-faint); letter-spacing: 0.04em; }

/* ---------- Newsletter ---------- */
.newsletter-block {
  background: var(--color-ink); color: var(--color-white);
  border-radius: var(--radius); padding: 2.2rem 2.3rem;
}
.newsletter-block h2, .newsletter-block h3 { color: var(--color-white); font-size: 1.5rem; }
.newsletter-block p { color: #cfc9b8; }
.newsletter-form { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.3rem; align-items: flex-start; }
.newsletter-form__field { display: flex; flex-direction: column; gap: 0.3rem; flex: 1 1 12rem; }
.newsletter-form__field label { font-family: var(--font-sans); font-size: 0.8rem; color: #cfc9b8; }
.newsletter-form input[type="email"], .newsletter-form input[type="text"] {
  font-family: var(--font-sans); font-size: 0.95rem; padding: 0.6rem 0.7rem;
  border-radius: var(--radius); border: 1px solid #55503f; background: #fffdf7; color: var(--color-ink);
}
.newsletter-form input:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 1px; }
.newsletter-form button {
  font-family: var(--font-sans); font-weight: 700; font-size: 0.95rem;
  background: var(--color-accent); color: var(--color-white); border: none;
  padding: 0.68rem 1.2rem; border-radius: var(--radius); cursor: pointer; align-self: flex-end;
}
.newsletter-form button:hover { background: #4d8478; }
.newsletter-consent { font-size: 0.8rem; color: #a49d88; margin-top: 0.8rem; max-width: 34em; }
.form-status { font-family: var(--font-sans); font-size: 0.9rem; margin-top: 0.9rem; padding: 0.6rem 0.8rem; border-radius: var(--radius); display: none; }
.form-status.is-visible { display: block; }
.form-status--success { background: var(--color-accent-soft); color: var(--color-accent-ink); }
.form-status--error { background: var(--color-flag-soft); color: #6b3b1c; }
.field-error { color: #e4b998; font-size: 0.82rem; margin-top: 0.2rem; display: none; }
.field-error.is-visible { display: block; }
.newsletter-block.on-light { background: var(--color-bg-raised); color: var(--color-ink); border: 1px solid var(--color-rule); }
.newsletter-block.on-light h2, .newsletter-block.on-light h3 { color: var(--color-ink); }
.newsletter-block.on-light p { color: var(--color-ink-soft); }
.newsletter-block.on-light input[type="email"], .newsletter-block.on-light input[type="text"] { border-color: var(--color-rule-strong); }
.newsletter-block.on-light .newsletter-consent { color: var(--color-ink-faint); }
.newsletter-block.on-light .newsletter-form__field label { color: var(--color-ink-soft); }
/* The default focus ring is too dark to read against the dark newsletter block; use a light
   ring there instead so keyboard focus stays visible (WCAG 2.2 non-text contrast). */
.newsletter-block:not(.on-light) :focus-visible { outline-color: #dce7e1; }

/* ---------- Boundary / disclaimer banner ---------- */
.boundary-banner {
  font-family: var(--font-sans); font-size: 0.88rem; color: var(--color-ink-soft);
  background: var(--color-bg-raised); border: 1px solid var(--color-rule);
  border-radius: var(--radius); padding: 1rem 1.2rem;
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--color-rule); margin-top: 3rem; padding: 2.6rem 0 3rem; }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 2rem;
  font-family: var(--font-sans); font-size: 0.88rem;
}
.footer-grid h3 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-ink-faint); margin-bottom: 0.7rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5rem; }
.footer-grid a { color: var(--color-ink-soft); text-decoration: none; }
.footer-grid a:hover { color: var(--color-ink); }
.footer-brand p { color: var(--color-ink-faint); max-width: 26em; }
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem;
  margin-top: 2.4rem; padding-top: 1.4rem; border-top: 1px solid var(--color-rule);
  font-family: var(--font-sans); font-size: 0.8rem; color: var(--color-ink-faint);
}
@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ---------- Utility ---------- */
.flow > * + * { margin-top: 1.2rem; }
.mt-0 { margin-top: 0; }
.center-narrow { max-width: 40em; }
.two-col {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 2.2rem;
}
@media (max-width: 700px) { .two-col { grid-template-columns: 1fr; } }
.kicker-block { border-left: 3px solid var(--color-rule-strong); padding-left: 1rem; margin: 1.6rem 0; color: var(--color-ink-soft); font-size: 0.98rem; }

.breadcrumb {
  font-family: var(--font-sans); font-size: 0.82rem; color: var(--color-ink-faint);
  padding-top: 1.4rem;
}
.breadcrumb a { color: var(--color-ink-faint); }
.breadcrumb a:hover { color: var(--color-accent-ink); }

.definition-strip {
  font-family: var(--font-sans); background: var(--color-bg-raised);
  border-radius: var(--radius); padding: 1.1rem 1.3rem; font-size: 1rem;
  border: 1px solid var(--color-rule);
}

/* explainer diagram frame */
.diagram-frame {
  border: 1px solid var(--color-rule); border-radius: var(--radius);
  background: var(--color-white); padding: 1.2rem; text-align: center;
}
.diagram-frame svg { max-width: 100%; height: auto; }
.diagram-frame figcaption { text-align: left; }

/* strength/effort scale note */
.status-badge {
  font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase;
  letter-spacing: 0.04em; padding: 0.15rem 0.5rem; border-radius: 2px;
  background: var(--color-bg-raised-2); color: var(--color-ink-soft); white-space: nowrap;
}
.status-badge--awaiting { background: var(--color-bg-raised-2); }
.status-badge--pending { background: #ece4cf; color: #6b5726; }

@media print {
  .site-header, .site-footer, .newsletter-block, .nav-toggle { display: none; }
}

/* Actual-mileage overlay on the planned weekly bar chart (build_site_data.py). */
.barchart__track { position: relative; }
.barchart__fill--actual { position: absolute; top: 50%; left: 0; transform: translateY(-50%); height: 0.32rem; border-radius: 2px; background: var(--color-ink); opacity: 0.7; }

/* Honeypot field for the newsletter form: invisible to humans, present in markup. */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; pointer-events: none; }