/* ==========================================================================
   REALSME.ORG — Website Stylesheet
   Implements REALSME_ORG_VISUAL_DESIGN_SYSTEM_V1
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Colour palette */
  --orange: #BC692C;
  --orange-dark: #A25823;
  --charcoal: #2E3033;
  --warm-neutral: #D9CCB8;
  --warm-light: #F4F0E8;
  --soft-sand: #E8DED0;
  --muted-grey: #6E706F;

  /* Functional ecosystem accents */
  --thinking-blue: #4C667A;
  --doing-green: #566F5C;
  --capital-gold: #9A7A3A;
  --community-plum: #705D78;

  /* Surfaces / text (semantic) */
  --bg: var(--warm-light);
  --surface: var(--soft-sand);
  --surface-strong: var(--warm-neutral);
  --text: var(--charcoal);
  --text-muted: var(--muted-grey);
  --text-on-dark: var(--warm-light);
  --border: rgba(46, 48, 51, 0.14);
  --focus-ring: var(--orange);

  /* Typography */
  --font-display: 'Manrope', Arial, sans-serif;
  --font-body: 'Inter', Arial, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;

  /* Spacing scale */
  --sp-xs: 4px;
  --sp-sm: 8px;
  --sp-md: 16px;
  --sp-lg: 24px;
  --sp-xl: 40px;
  --sp-2xl: 64px;
  --sp-3xl: 112px;

  /* Radius */
  --radius-card: 14px;
  --radius-btn: 9px;
  --radius-panel: 18px;

  /* Motion */
  --motion-fast: 180ms ease;

  /* Layout */
  --content-max: 1240px;
  --reading-max: 720px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { 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; scroll-behavior: auto !important; }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.15; margin: 0 0 var(--sp-md); color: var(--text); }
p { margin: 0 0 var(--sp-md); }
button { font: inherit; cursor: pointer; }

:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--charcoal);
  color: var(--warm-light);
  padding: var(--sp-sm) var(--sp-md);
  z-index: 1000;
}
.skip-link:focus { left: var(--sp-md); top: var(--sp-md); }

/* ---------- Type scale ---------- */
.h-display { font-size: clamp(2.4rem, 4.4vw, 4.2rem); line-height: 1.08; letter-spacing: -0.01em; }
h1, .h1 { font-size: clamp(2.1rem, 3.4vw, 3.2rem); line-height: 1.1; }
h2, .h2 { font-size: clamp(1.6rem, 2.4vw, 2.15rem); font-weight: 650; }
h3, .h3 { font-size: clamp(1.25rem, 1.6vw, 1.45rem); font-weight: 600; }
.lead { font-size: clamp(1.1rem, 1.4vw, 1.3rem); line-height: 1.55; color: var(--text); }
small, .small { font-size: 0.85rem; line-height: 1.45; color: var(--text-muted); }
.eyebrow {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--orange);
  display: block;
  margin-bottom: var(--sp-sm);
}
.serif { font-family: var(--font-serif); }

/* ---------- Layout helpers ---------- */
.wrap {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}
.reading {
  max-width: var(--reading-max);
  margin: 0 auto;
}
.section { padding: var(--sp-3xl) 0; }
.section--tight { padding: var(--sp-2xl) 0; }
.section--surface { background: var(--surface); }
.section--strong { background: var(--surface-strong); }
.section--dark { background: var(--charcoal); color: var(--text-on-dark); }
.section--dark h1, .section--dark h2, .section--dark h3 { color: var(--text-on-dark); }
.section-head { max-width: 760px; margin-bottom: var(--sp-2xl); }
.section-head p { color: var(--text-muted); }

.grid { display: grid; gap: var(--sp-lg); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-7 { grid-template-columns: repeat(7, 1fr); }
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-4, .grid-7 { grid-template-columns: 1fr; }
}
@media (min-width: 901px) and (max-width: 1180px) {
  .grid-4, .grid-7 { grid-template-columns: repeat(2, 1fr); }
}

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: var(--sp-2xl);
  align-items: center;
}
@media (max-width: 900px) {
  .split { grid-template-columns: 1fr; }
}

/* ---------- Header ---------- */
.site-header {
  background: var(--warm-light);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  gap: var(--sp-lg);
}
.brand { display: flex; align-items: center; gap: var(--sp-md); }
.brand img { height: 40px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-tagline { font-size: 0.78rem; color: var(--text-muted); }

.primary-nav ul { display: flex; gap: var(--sp-lg); align-items: center; }
.primary-nav a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: color var(--motion-fast), border-color var(--motion-fast);
}
.primary-nav a:hover { color: var(--orange); }
.primary-nav a[aria-current="page"] { color: var(--orange); border-bottom-color: var(--orange); }

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  padding: 8px 12px;
}
.menu-toggle span, .menu-toggle::before, .menu-toggle::after { content: none; }

@media (max-width: 960px) {
  .primary-nav {
    position: fixed;
    inset: 84px 0 0 0;
    background: var(--warm-light);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--motion-fast), transform var(--motion-fast);
    overflow-y: auto;
  }
  .primary-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .primary-nav ul { flex-direction: column; align-items: flex-start; gap: 0; padding: var(--sp-lg); }
  .primary-nav li { width: 100%; border-bottom: 1px solid var(--border); }
  .primary-nav a { display: block; padding: 16px 4px; }
  .menu-toggle { display: inline-flex; align-items: center; gap: 8px; }
}

/* ---------- Buttons & links ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: var(--radius-btn);
  font-weight: 650;
  font-size: 0.95rem;
  transition: background var(--motion-fast), color var(--motion-fast), border-color var(--motion-fast);
  border: 1px solid transparent;
}
.btn-primary { background: var(--orange); color: var(--warm-light); }
.btn-primary:hover { background: var(--orange-dark); }
.btn-secondary { background: transparent; border-color: var(--charcoal); color: var(--charcoal); }
.btn-secondary:hover { background: var(--soft-sand); }
.btn-download {
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  padding: 9px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--warm-light);
}
.btn-download:hover { background: var(--soft-sand); }
.actions { display: flex; flex-wrap: wrap; gap: var(--sp-md); }

.text-link {
  font-weight: 600;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}
.text-link:hover { color: var(--orange); }
.text-link--arrow::after { content: " \2192"; }

/* ---------- Hero ---------- */
.hero { padding: var(--sp-2xl) 0 var(--sp-3xl); }
.hero-eyebrow { color: var(--text-muted); font-size: 0.85rem; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: var(--sp-sm); }
.hero-title { margin-bottom: var(--sp-md); }
.hero-title .accent { color: var(--orange); }
.hero-lead { color: var(--text-muted); max-width: 620px; }
.hero-quote { font-weight: 600; margin: var(--sp-lg) 0; }
.hero-media { border-radius: var(--radius-panel); overflow: hidden; box-shadow: 0 1px 0 var(--border); }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }

.page-hero { padding: var(--sp-2xl) 0 var(--sp-xl); border-bottom: 1px solid var(--border); }
.page-hero .h1 { max-width: 820px; }
.page-hero .lead { max-width: 680px; }
.breadcrumbs { font-size: 0.85rem; color: var(--text-muted); margin-bottom: var(--sp-md); }
.breadcrumbs a:hover { color: var(--orange); }

/* ---------- Cards ---------- */
.card {
  background: var(--warm-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--sp-lg);
}
.card--surface { background: var(--surface); }

.principle-card { background: var(--warm-light); border: 1px solid var(--border); border-radius: var(--radius-card); padding: var(--sp-lg); }
.principle-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--orange); color: var(--warm-light);
  font-weight: 700; font-size: 0.95rem; margin-bottom: var(--sp-md);
}
.principle-card h3 { font-size: 1.05rem; margin-bottom: var(--sp-sm); }
.principle-card p { color: var(--text-muted); font-size: 0.95rem; margin: 0; }

.role-card { border-left: 3px solid var(--orange); padding: 0 0 0 var(--sp-lg); }
.role-card h3 { margin-bottom: 4px; }
.role-card .role-lesson { color: var(--orange); font-weight: 650; font-size: 0.9rem; margin-bottom: var(--sp-sm); display: block; }
.role-card p { color: var(--text-muted); }

.core-card { background: var(--surface); border-radius: var(--radius-card); padding: var(--sp-lg); }
.core-letter { font-family: var(--font-display); font-size: 2.6rem; font-weight: 700; color: var(--orange); line-height: 1; margin-bottom: var(--sp-sm); }
.core-card h3 { font-size: 1.1rem; }
.core-card p { color: var(--text-muted); margin: 0; }

.layer-card { background: var(--warm-light); border: 1px solid var(--border); border-radius: var(--radius-card); padding: var(--sp-lg); border-top: 4px solid var(--layer-accent, var(--orange)); }
.layer-card h3 { font-size: 1.05rem; }
.layer-card .layer-domain { font-weight: 700; color: var(--layer-accent, var(--orange)); font-size: 0.9rem; display: block; margin-bottom: 4px; }
.layer-card p { color: var(--text-muted); margin-bottom: var(--sp-sm); }
.layer-card .ext-link { font-size: 0.85rem; font-weight: 600; }
.layer--thinking { --layer-accent: var(--thinking-blue); }
.layer--doing { --layer-accent: var(--doing-green); }
.layer--capital { --layer-accent: var(--capital-gold); }
.layer--community { --layer-accent: var(--community-plum); }
.layer--why { --layer-accent: var(--charcoal); }

.pull-quote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 650;
  line-height: 1.3;
  border-left: 3px solid var(--orange);
  padding-left: var(--sp-lg);
  margin: var(--sp-2xl) 0;
  max-width: 820px;
}

.library-ref {
  background: var(--surface);
  border-radius: var(--radius-panel);
  padding: var(--sp-xl);
  margin-top: var(--sp-2xl);
}
.library-ref h3 { margin-bottom: var(--sp-sm); }
.library-ref p { color: var(--text-muted); }

.related-reading { border-top: 1px solid var(--border); padding-top: var(--sp-lg); margin-top: var(--sp-2xl); }
.related-reading h3 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); margin-bottom: var(--sp-md); }
.related-reading ul { display: flex; flex-wrap: wrap; gap: var(--sp-lg); }

/* ---------- Document / library cards ---------- */
.doc-card {
  display: flex;
  gap: var(--sp-lg);
  background: var(--warm-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: var(--sp-lg);
}
.doc-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--orange);
  min-width: 44px;
}
.doc-card h3 { margin-bottom: 2px; font-size: 1.15rem; }
.doc-card .doc-subtitle { color: var(--orange); font-weight: 600; font-size: 0.9rem; display: block; margin-bottom: var(--sp-sm); }
.doc-card p { color: var(--text-muted); font-size: 0.95rem; }
.doc-meta { font-size: 0.8rem; color: var(--text-muted); margin: var(--sp-sm) 0 var(--sp-md); }
.doc-actions { display: flex; flex-wrap: wrap; gap: 8px; }
@media (max-width: 640px) {
  .doc-card { flex-direction: column; }
  .doc-actions { flex-direction: column; align-items: flex-start; }
  .doc-actions .btn-download { width: 100%; text-align: center; }
}

/* ---------- Relationship map viewer ---------- */
.map-viewer {
  background: var(--surface);
  border-radius: var(--radius-panel);
  padding: var(--sp-lg);
  position: relative;
}
.map-viewer img, .map-viewer svg { width: 100%; height: auto; }
.map-controls { display: flex; gap: 8px; margin-bottom: var(--sp-md); }
.map-controls button {
  border: 1px solid var(--border);
  background: var(--warm-light);
  border-radius: var(--radius-btn);
  padding: 8px 12px;
  font-size: 0.85rem;
  font-weight: 600;
}
.map-controls button:hover { background: var(--soft-sand); }
.map-frame { overflow: hidden; border-radius: var(--radius-card); background: var(--warm-light); }
.map-frame.is-zoomed { cursor: zoom-out; }
.map-frame img { transition: transform var(--motion-fast); cursor: zoom-in; }
.map-frame.is-zoomed img { cursor: zoom-out; }

.map-fullscreen-backdrop {
  position: fixed; inset: 0; background: rgba(46,48,51,0.92);
  display: none; align-items: center; justify-content: center;
  z-index: 500; padding: var(--sp-lg);
}
.map-fullscreen-backdrop.is-open { display: flex; }
.map-fullscreen-backdrop img { max-width: 95vw; max-height: 90vh; background: var(--warm-light); border-radius: var(--radius-card); }
.map-fullscreen-close {
  position: absolute; top: var(--sp-lg); right: var(--sp-lg);
  background: var(--warm-light); border-radius: 50%;
  width: 44px; height: 44px; border: none; font-size: 1.2rem;
}

.map-steps { counter-reset: step; margin-top: var(--sp-xl); }
.map-steps li {
  counter-increment: step;
  position: relative;
  padding-left: 44px;
  margin-bottom: var(--sp-md);
  color: var(--text-muted);
}
.map-steps li::before {
  content: counter(step);
  position: absolute; left: 0; top: 0;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--orange); color: var(--warm-light);
  font-weight: 700; font-size: 0.85rem;
  display: flex; align-items: center; justify-content: center;
}
.map-steps strong { color: var(--text); }

.map-callout {
  background: var(--soft-sand);
  border-left: 3px solid var(--orange);
  padding: var(--sp-md) var(--sp-lg);
  border-radius: var(--radius-btn);
  font-weight: 600;
  margin-top: var(--sp-lg);
}

/* ---------- Read-online document page ---------- */
.doc-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--sp-2xl);
  align-items: start;
}
@media (max-width: 960px) { .doc-layout { grid-template-columns: 1fr; } }

.doc-toc {
  position: sticky;
  top: 104px;
  background: var(--surface);
  border-radius: var(--radius-card);
  padding: var(--sp-lg);
}
.doc-toc h2 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-bottom: var(--sp-md); }
.doc-toc li { margin-bottom: var(--sp-sm); }
.doc-toc a { font-size: 0.92rem; color: var(--text); }
.doc-toc a:hover { color: var(--orange); }
@media (max-width: 960px) {
  .doc-toc { position: static; }
  .doc-toc[open] summary { margin-bottom: var(--sp-md); }
  .doc-toc summary { font-weight: 700; cursor: pointer; }
}

.doc-header { margin-bottom: var(--sp-2xl); }
.doc-header .doc-num { display: block; margin-bottom: var(--sp-sm); }
.doc-header h1 { margin-bottom: 4px; }
.doc-header .doc-subtitle { color: var(--orange); font-weight: 650; display: block; margin-bottom: var(--sp-md); }
.doc-header .doc-actions { margin-top: var(--sp-lg); }

.doc-article .kicker { display: block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--orange); margin: var(--sp-2xl) 0 4px; }
.doc-article h2 { scroll-margin-top: 110px; margin-top: var(--sp-xl); }
.doc-article h3 { scroll-margin-top: 110px; margin-top: var(--sp-lg); }
.doc-article ul { margin: 0 0 var(--sp-md); padding-left: 1.3em; list-style: disc; }
.doc-article li { margin-bottom: 6px; color: var(--text); }
.doc-article p { max-width: var(--reading-max); }

.chapter-nav {
  display: flex; justify-content: space-between; gap: var(--sp-lg);
  margin-top: var(--sp-3xl); padding-top: var(--sp-lg);
  border-top: 1px solid var(--border);
}
.chapter-nav a { max-width: 45%; }
.chapter-nav .dir { display: block; font-size: 0.78rem; text-transform: uppercase; color: var(--text-muted); margin-bottom: 4px; }
.chapter-nav .next { text-align: right; margin-left: auto; }

/* ---------- Ecosystem strip ---------- */
.ecosystem-strip { background: var(--surface); }
.ecosystem-strip .card { background: var(--warm-light); }

/* ---------- Footer ---------- */
.site-footer { background: var(--charcoal); color: var(--warm-light); padding: var(--sp-2xl) 0 var(--sp-lg); }
.footer-top { display: grid; grid-template-columns: 1.3fr repeat(4, 1fr); gap: var(--sp-lg); margin-bottom: var(--sp-2xl); }
@media (max-width: 900px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer-top { grid-template-columns: 1fr; } }
.footer-brand p { color: rgba(244,240,232,0.72); max-width: 320px; }
.footer-col h3 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; color: rgba(244,240,232,0.6); margin-bottom: var(--sp-md); }
.footer-col li { margin-bottom: var(--sp-sm); }
.footer-col a { color: rgba(244,240,232,0.88); font-size: 0.92rem; }
.footer-col a:hover { color: var(--warm-neutral); }
.footer-bottom {
  border-top: 1px solid rgba(244,240,232,0.16);
  padding-top: var(--sp-lg);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--sp-sm);
  font-size: 0.8rem; color: rgba(244,240,232,0.6);
}

/* ---------- Utility ---------- */
.text-muted { color: var(--text-muted); }
.mt-0 { margin-top: 0; }
.center { text-align: center; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}