/* thinkvalue.org — Ink & Brass (blueprint §4)
   Field: deep ink navy #0f172a family (Ajna-depth indigo at panels).
   Accents: brass-gold, used sparingly — brass marks what matters.
   Type: system stacks only. No webfonts, no external resources.
   Layout law: calm, low-arousal; one obvious next action per screen. */

:root {
  --ink: #0f172a;
  --ink-panel: #16233d;
  --ink-line: #2b3a58;
  --indigo-depth: #1e2a4a;
  --brass: #c9a227;
  --brass-bright: #e3c565;
  --brass-deep: #8a6d1f;
  --offwhite: #ece7db;
  --offwhite-dim: #b9bdc9;
  --paper: #f7f3ea;
  --paper-line: #ddd3ba;
  --ink-text: #1f2733;
  --ink-text-dim: #4c5566;
  --serif: Georgia, "Iowan Old Style", "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { margin: 0; padding: 0; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--offwhite);
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.65;
}

::selection { background: var(--brass); color: var(--ink); }

a { color: var(--brass-bright); }
a:focus-visible, button:focus-visible, select:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

.wrap {
  max-width: 72rem;
  margin: 0 auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* ---------- header ---------- */

.site-header {
  border-bottom: 1px solid var(--ink-line);
  background: var(--ink);
}

.header-in {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 2rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.brand {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--offwhite);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-mark {
  width: 0.55em;
  height: 0.55em;
  background: var(--brass);
  transform: rotate(45deg);
  flex: none;
}

.site-nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; }

.site-nav a {
  color: var(--offwhite-dim);
  text-decoration: none;
  font-size: 0.98rem;
  padding: 0.25rem 0;
}

.site-nav a:hover { color: var(--brass-bright); }

/* ---------- main frame ---------- */

main.wrap { padding-top: 2rem; padding-bottom: 3rem; }

.reader-mount { max-width: 46rem; margin: 0 auto; }

/* ---------- front door (display surface on ink) ---------- */

.home .page { max-width: 46rem; margin: 0 auto; }

.home .page h1 {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 6vw, 4rem);
  line-height: 1.1;
  margin: 1.5rem 0 0.75rem;
  color: var(--offwhite);
}

.home .page > p:first-of-type {
  font-family: var(--serif);
  font-size: 1.35rem;
  color: var(--brass-bright);
  margin-top: 0;
}

.home .page h2 {
  font-family: var(--serif);
  font-size: 1.6rem;
  margin: 2.75rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--brass);
  color: var(--offwhite);
}

.home .page p { margin: 0 0 1.1rem; }
.home .page strong { color: var(--brass-bright); }

.cta-row { margin: 2.5rem 0 1rem; }

.btn {
  display: inline-block;
  background: var(--brass);
  color: #171106;
  font-weight: 700;
  text-decoration: none;
  padding: 0.9rem 1.6rem;
  border-radius: 6px;
  line-height: 1.4;
}

.btn:hover { background: var(--brass-bright); }

/* ---------- reading surfaces (paper panel on the ink field) ---------- */

.reading .page {
  max-width: 46rem;
  margin: 0 auto;
  background: var(--paper);
  color: var(--ink-text);
  border-radius: 10px;
  padding: 2.75rem clamp(1.25rem, 5vw, 3.25rem) 3rem;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

.reading .page h1 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 4.5vw, 2.6rem);
  line-height: 1.2;
  margin: 0 0 1rem;
  color: var(--ink);
}

.reading .page h2 {
  font-family: var(--serif);
  font-size: 1.45rem;
  line-height: 1.3;
  margin: 2.5rem 0 0.9rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--brass);
  color: var(--ink);
}

.reading .page p { margin: 0 0 1.1rem; }
.reading .page a { color: var(--brass-deep); }
.reading .page ul, .reading .page ol { margin: 0 0 1.1rem; padding-left: 1.6rem; }
.reading .page li { margin-bottom: 0.45rem; }
.reading .page hr {
  border: 0;
  border-top: 1px solid var(--paper-line);
  margin: 2.25rem 0;
}
.reading .page code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
  background: #efe8d5;
  padding: 0.05em 0.3em;
  border-radius: 3px;
}

.kicker {
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-deep);
  margin: 0 0 1.75rem !important;
}

/* ---------- knowledge bank slate ---------- */

.slate { margin-top: 3rem; }

.article-list { list-style: none; margin: 0; padding: 0; }

.article-card {
  border-top: 1px solid var(--paper-line);
  padding: 1.4rem 0 0.6rem;
  margin-bottom: 0.6rem;
}

.article-card h3 {
  font-family: var(--serif);
  font-size: 1.3rem;
  line-height: 1.3;
  margin: 0 0 0.3rem;
}

.article-card h3 a { color: var(--ink); text-decoration: none; }
.article-card h3 a:hover { color: var(--brass-deep); text-decoration: underline; }

.shelf {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-deep);
  margin: 0 0 0.5rem !important;
}

/* ---------- footer / seller strip ---------- */

.site-footer {
  border-top: 1px solid var(--ink-line);
  padding: 1.5rem 0 2.25rem;
}

.seller-strip {
  text-align: center;
  font-size: 0.88rem;
  color: var(--offwhite-dim);
  margin: 0;
}

.seller-strip a { color: var(--brass-bright); text-decoration: none; }
.seller-strip a:hover { text-decoration: underline; }

/* ---------- reader-core theme overrides (brass, on the ink field) ------ */

.rc-play { background: var(--brass); color: #171106; }
.rc-play:hover { background: var(--brass-bright); filter: none; }
.rc-stop { color: var(--brass-bright); border-color: var(--brass); }
.rc-stop:disabled { opacity: 0.35; }
.rc-rate-label { color: var(--offwhite-dim); }
.rc-rate { background: var(--ink-panel); color: var(--offwhite); border-color: var(--ink-line); }
.rc-progress { background: var(--ink-line); }
.rc-fill { background: var(--brass); }
.rc-sent.rc-reading { background: #ffe9a8; }
.home .rc-sent.rc-reading { color: var(--ink-text); }

/* ---------- small screens ---------- */

@media (max-width: 40rem) {
  .header-in { justify-content: flex-start; }
  main.wrap { padding-top: 1.25rem; }
  .reading .page { padding-top: 2rem; }
}