/* ============================================================
   RRITA — styles.css

   COLOUR PALETTE
   --paper  #FEFCF7   warm paper background
   --ink    #2B2620   primary text
   --soft   #6B5E50   secondary text
   --amber  #8B5A2B   accent (amber)
   --sand   #E0D3BC   borders and rules

   FONTS (loaded from Google Fonts)
   IBM Plex Sans  — body text, headings
   IBM Plex Mono  — labels, nav, monospaced elements
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap');

:root {
  --paper:  #FEFCF7;
  --ink:    #2B2620;
  --soft:   #6B5E50;
  --amber:  #8B5A2B;
  --sand:   #E0D3BC;
  --sans:   'IBM Plex Sans', sans-serif;
  --mono:   'IBM Plex Mono', monospace;
  --max:    700px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ── Links ── */
a { color: var(--amber); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--amber); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ── Layout ── */
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* ── Header ── */
.site-header {
  border-bottom: 1px solid var(--sand);
  padding: 20px 0;
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 10;
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 20px;
  color: var(--ink);
  text-decoration: none;
}
.brand:hover { color: var(--amber); }

/* ── Navigation ── */
.site-nav { display: flex; gap: 24px; flex-wrap: wrap; }
.site-nav a {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--soft);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  letter-spacing: .02em;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ── Main ── */
main { padding: 54px 0 88px; }

/* ── Typography ── */
h1 {
  font-size: clamp(26px, 5vw, 40px);
  font-weight: 600;
  line-height: 1.15;
  margin-bottom: 18px;
}
h2 {
  font-size: 21px;
  font-weight: 600;
  margin: 50px 0 12px;
}
h3 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--amber);
  margin: 34px 0 10px;
  font-weight: 500;
}
h4 { font-weight: 600; font-size: 16px; margin-bottom: 7px; }
p { margin-bottom: 15px; }
.lede { font-size: 18px; color: var(--soft); margin-bottom: 16px; }
.soft { color: var(--soft); }
hr.div { border: none; border-top: 1px solid var(--sand); margin: 48px 0; }

/* ── Home: lemniscate decoration ── */
.lemni-wrap { margin: 34px 0 6px; }
.lemni-caption {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--soft);
  letter-spacing: .04em;
  margin-bottom: 38px;
  opacity: .7;
}

/* ── Buttons ── */
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 4px; }
.btn {
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 10px 18px;
  border-radius: 3px;
  cursor: pointer;
  letter-spacing: .02em;
  border: 1px solid;
  text-decoration: none;
  display: inline-block;
}
.btn-primary { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn-primary:hover { background: var(--amber); border-color: var(--amber); color: var(--paper); }
.btn-secondary { background: transparent; color: var(--ink); border-color: var(--sand); }
.btn-secondary:hover { border-color: var(--ink); }

/* ── Process: thread callout ── */
.thread {
  border-left: 2px solid var(--amber);
  padding: 6px 0 6px 20px;
  margin: 28px 0 38px;
  color: var(--soft);
  font-size: 15px;
  line-height: 1.7;
}
.thread strong { color: var(--ink); font-weight: 600; }

/* ── Process: steps ── */
ol.steps { list-style: none; padding: 0; margin: 0; }
ol.steps li {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 16px;
  padding: 22px 0;
  border-top: 1px solid var(--sand);
}
ol.steps li:last-child { border-bottom: 1px solid var(--sand); }
.step-n {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--amber);
  font-weight: 500;
  padding-top: 2px;
}
.step-tag {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--amber);
  margin-left: 8px;
  opacity: .8;
}
.step-body p { margin: 0; color: var(--soft); font-size: 15px; }

/* ── Tools: resource cards ── */
.card {
  border: 1px solid var(--sand);
  border-radius: 6px;
  padding: 22px 24px;
  margin: 16px 0 28px;
}
.card h4 { margin-bottom: 8px; }
.card p { color: var(--soft); font-size: 15px; margin-bottom: 16px; }

/* ── Accordion (glossary + Q&A) ── */
.acc-section {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--amber);
  margin: 40px 0 4px;
  display: block;
}
.acc-item { border-bottom: 1px solid var(--sand); }
.acc-item:first-of-type { border-top: 1px solid var(--sand); }
.acc-q {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 16px 0;
  font-family: var(--sans);
  font-size: 15.5px;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}
.acc-q:hover { color: var(--amber); }
.acc-icon {
  font-family: var(--mono);
  font-size: 18px;
  color: var(--amber);
  flex-shrink: 0;
  line-height: 1;
  margin-top: 1px;
}
.acc-a {
  display: none;
  padding: 0 0 16px;
  color: var(--soft);
  font-size: 15px;
  line-height: 1.72;
}
.acc-a.open { display: block; }
.gloss-term {
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
}

/* ── Tools: probe list ── */
.probe-list { list-style: none; padding: 0; margin: 12px 0 16px; }
.probe-list li {
  color: var(--soft);
  font-size: 15.5px;
  padding: 4px 0 4px 18px;
  position: relative;
}
.probe-list li::before { content: '"'; position: absolute; left: 0; color: var(--amber); }

/* ── Community: contact form ── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--soft);
  margin-bottom: 6px;
}
.form-input, .form-textarea {
  width: 100%;
  max-width: 480px;
  font-family: var(--sans);
  font-size: 15px;
  padding: 10px 13px;
  border: 1px solid var(--sand);
  border-radius: 3px;
  background: #fff;
  color: var(--ink);
}
.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--amber);
}
.form-textarea { height: 104px; resize: vertical; }

/* ── Footer ── */
.site-footer { border-top: 1px solid var(--sand); padding: 28px 0; }
.site-footer p {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--soft);
}
.site-footer a { color: var(--soft); }

/* ── Responsive ── */
@media (max-width: 520px) {
  ol.steps li { grid-template-columns: 36px 1fr; }
  .site-nav { gap: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}