/* ============================================================================
   MomOps Framework Reader: layout & component styles
   Depends on tokens in ../colors_and_type.css + ../editorial.css.
   ========================================================================== */

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--momops-ink);
  background: var(--momops-ground);
  -webkit-font-smoothing: antialiased;
}

/* The framework page ground: veiled topographic field-note map.
   (Real earth illustration asset was not provided; approximated with a faint
   layered contour over the 72px field-note grid.) */
.fw-ground {
  position: relative;
  min-height: 100vh;
  background:
    linear-gradient(90deg, var(--grid-line-v) 1px, transparent 1px),
    linear-gradient(180deg, var(--grid-line-h) 1px, transparent 1px),
    var(--momops-ground);
  background-size: var(--grid-size) var(--grid-size);
}
.fw-ground::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
  background:
    radial-gradient(120% 90% at 12% 8%, rgba(76,168,160,0.06), transparent 55%),
    radial-gradient(130% 100% at 88% 22%, rgba(231,93,66,0.05), transparent 55%),
    repeating-radial-gradient(circle at 78% 30%, transparent 0 38px, rgba(24,39,39,0.020) 38px 39px),
    repeating-radial-gradient(circle at 16% 78%, transparent 0 46px, rgba(24,39,39,0.018) 46px 47px);
}
.fw-ground > * { position: relative; z-index: 1; }

/* ── Top progress + control bar ─────────────────────────────────────────── */
.fw-progress {
  position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 60;
  background: transparent;
}
.fw-progress span {
  display: block; height: 100%; width: 0%;
  background: var(--momops-gold);
  transition: width 120ms linear;
}

.fw-topbar {
  position: fixed; top: 3px; left: 0; right: 0; z-index: 55;
  background: rgba(255,250,240,0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--momops-rule);
}
.fw-topbar-inner {
  max-width: 1280px; margin: 0 auto; padding: 11px 22px;
  display: flex; align-items: center; gap: 18px; justify-content: space-between;
}
.fw-brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.fw-brand img { height: 30px; width: auto; display: block; }
.fw-brand small { font-size: 8.5px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--momops-ink-soft); font-weight: 700; border-left: 1px solid var(--momops-rule); padding-left: 10px; }
@media (max-width: 560px) { .fw-brand small { display: none; } }

.fw-controls { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }

/* Buttons: square, bordered, editorial */
.fw-btn {
  font-family: var(--font-body); font-weight: 700; font-size: 12.5px;
  letter-spacing: 0.02em; cursor: pointer; border-radius: 0;
  padding: 9px 14px; display: inline-flex; align-items: center; gap: 7px;
  border: 1px solid var(--momops-rule); background: transparent; color: var(--momops-ink);
  transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out), background var(--dur-fast);
  white-space: nowrap;
}
.fw-btn:hover { background: rgba(24,39,39,0.04); }
.fw-btn--solid {
  background: var(--momops-ink-deep); color: var(--momops-cream-text);
  border-color: var(--momops-ink-deep); box-shadow: var(--shadow-block-soft);
}
.fw-btn--solid:hover { background: var(--momops-ink-deep); transform: translate(-2px,-2px); box-shadow: 9px 9px 0 rgba(24,39,39,0.22); }
.fw-btn--solid:active { transform: translate(0,0); box-shadow: 3px 3px 0 rgba(24,39,39,0.22); }
.fw-btn--accent { background: var(--momops-coral); color: var(--momops-cream-text); border-color: var(--momops-ink-deep); }
.fw-btn--accent:hover { background: var(--momops-coral); transform: translate(-2px,-2px); box-shadow: 7px 7px 0 rgba(24,39,39,0.18); }
.fw-btn[aria-pressed="true"] { background: var(--momops-ink-deep); color: var(--momops-cream-text); border-color: var(--momops-ink-deep); }
.fw-btn .ic { width: 15px; height: 15px; }
.fw-icon-btn { padding: 9px; }

/* ── Main layout: sticky TOC rail + reading column ──────────────────────── */
.fw-layout {
  max-width: 1280px; margin: 0 auto;
  display: grid; grid-template-columns: 256px minmax(0, 1fr);
  gap: 0; padding: 0 22px;
}
.fw-toc {
  position: sticky; top: 96px; align-self: start;
  height: calc(100vh - 120px); overflow-y: auto;
  padding: 28px 22px 28px 0; margin-right: 8px;
  border-right: 1px solid var(--momops-rule);
}
.fw-toc-head { font-size: 11px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--momops-ink-soft); margin: 0 0 14px; }
.fw-toc ol { list-style: none; margin: 0; padding: 0; counter-reset: ch; }
.fw-toc li { counter-increment: ch; margin: 0 0 2px; }
.fw-toc a {
  display: grid; grid-template-columns: 26px 1fr; gap: 8px; align-items: baseline;
  text-decoration: none; color: var(--momops-ink-soft);
  padding: 7px 10px 7px 8px; border-left: 2px solid transparent;
  transition: color var(--dur-fast), background var(--dur-fast), border-color var(--dur-fast);
}
.fw-toc a::before { content: counter(ch, decimal-leading-zero); font-size: 11px; font-weight: 700; color: var(--momops-border-sand); }
.fw-toc a span { font-size: 13.5px; line-height: 1.35; }
.fw-toc a:hover { color: var(--momops-ink); background: rgba(24,39,39,0.03); }
.fw-toc a.is-active { color: var(--momops-ink-deep); border-left-color: var(--momops-gold); background: rgba(240,191,63,0.10); }
.fw-toc a.is-active::before { color: var(--momops-coral); }

.fw-main { padding: 40px 0 120px; min-width: 0; }

/* ── Cover ──────────────────────────────────────────────────────────────── */
.fw-cover {
  min-height: calc(100vh - 64px);
  display: flex; flex-direction: column; justify-content: center;
  padding: 80px 0 64px; max-width: 880px;
}
.fw-cover-kicker { font-size: 12px; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; color: var(--momops-teal-deep); margin-bottom: 26px; display: flex; align-items: center; gap: 12px; }
.fw-cover-kicker::after { content: ""; height: 1px; flex: 1; max-width: 120px; background: var(--momops-rule); }
.fw-cover h1 { font-family: var(--font-display); font-weight: 900; font-size: clamp(2.6rem, 7vw, 5.2rem); line-height: 1.04; letter-spacing: -0.02em; color: var(--momops-ink-deep); margin: 0 0 18px; }
.fw-cover .fw-cover-sub { font-family: var(--font-display); font-weight: 400; font-size: clamp(1.4rem, 3.4vw, 2.3rem); line-height: 1.15; color: var(--momops-ink); margin: 0 0 28px; max-width: 18ch; }
.fw-cover .fw-cover-tag { font-size: 1.2rem; line-height: 1.6; color: var(--momops-ink-soft); max-width: 46ch; margin: 0 0 38px; }
.fw-cover-meta { display: flex; flex-wrap: wrap; gap: 0; border-top: 1px solid var(--momops-rule); border-bottom: 1px solid var(--momops-rule); margin-bottom: 36px; }
.fw-cover-meta div { padding: 16px 24px 16px 0; margin-right: 24px; border-right: 1px solid var(--momops-rule); }
.fw-cover-meta div:last-child { border-right: 0; }
.fw-cover-meta dt { font-size: 10.5px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--momops-ink-soft); margin-bottom: 5px; }
.fw-cover-meta dd { margin: 0; font-family: var(--font-display); font-weight: 600; font-size: 17px; color: var(--momops-ink-deep); }
.fw-cover-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* ── Chapter ────────────────────────────────────────────────────────────── */
.fw-chapter { padding: 64px 0; border-top: 1px solid var(--momops-rule); scroll-margin-top: 92px; }
.fw-chapter:first-of-type { border-top: 0; }
.fw-chapter-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 8px; }
.fw-chapter-num { font-family: var(--font-display); font-weight: 700; font-size: 15px; color: var(--momops-coral); }
.fw-chapter-kicker { font-size: 11.5px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--momops-ink-soft); }
.fw-chapter h2 { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.9rem, 3.6vw, 2.9rem); line-height: 1.12; letter-spacing: -0.018em; color: var(--momops-ink-deep); margin: 0 0 28px; max-width: 20ch; }

.fw-prose { max-width: 70ch; }
.fw-prose h3 { font-family: var(--font-display); font-weight: 700; font-size: 1.5rem; line-height: 1.25; color: var(--momops-ink-deep); margin: 40px 0 14px; }
.fw-prose h4 { font-family: var(--font-body); font-weight: 700; font-size: 0.82rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--momops-teal-deep); margin: 26px 0 10px; }
.fw-prose .fw-sub { font-family: var(--font-display); font-style: italic; font-weight: 400; font-size: 1.18rem; line-height: 1.5; color: var(--momops-ink-medium); margin: 0 0 16px; }
.fw-prose p { font-size: 1.1875rem; line-height: 1.78; color: var(--momops-ink); margin: 0 0 20px; }
.fw-prose p .lead { font-weight: 700; color: var(--momops-ink-deep); }
.fw-prose ul, .fw-prose ol { margin: 0 0 22px; padding: 0; list-style: none; }
.fw-prose li { position: relative; padding-left: 28px; margin-bottom: 12px; font-size: 1.1rem; line-height: 1.62; color: var(--momops-ink); }
.fw-prose ul li::before { content: ""; position: absolute; left: 4px; top: 11px; width: 8px; height: 8px; background: var(--momops-teal); }
.fw-prose ol { counter-reset: li; }
.fw-prose ol li { counter-increment: li; }
.fw-prose ol li::before { content: counter(li); position: absolute; left: 0; top: 0; font-family: var(--font-display); font-weight: 700; font-size: 0.95rem; color: var(--momops-coral); }
.fw-prose li .lead { font-weight: 700; color: var(--momops-ink-deep); }

/* Pull quote */
.fw-quote { margin: 36px 0; padding: 4px 0 4px 28px; border-left: 4px solid var(--momops-coral); }
.fw-quote p { font-family: var(--font-display); font-weight: 600; font-size: 1.7rem; line-height: 1.32; color: var(--momops-ink-deep); margin: 0; text-wrap: balance; }
.fw-quote cite { display: block; margin-top: 12px; font-style: normal; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--momops-ink-soft); }

/* Research note: collapsible, bordered field-note panel */
.fw-note { border: 1px solid var(--momops-rule); background: rgba(255,248,236,0.55); margin: 14px 0; }
.fw-note > summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: 11px; padding: 13px 16px; }
.fw-note > summary::-webkit-details-marker { display: none; }
.fw-note-badge { font-size: 9.5px; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; color: var(--momops-cream-text); background: var(--momops-ink-deep); padding: 3px 7px; }
.fw-note-label { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; color: var(--momops-ink-deep); flex: 1; }
.fw-note-chev { width: 16px; height: 16px; color: var(--momops-ink-soft); transition: transform var(--dur-fast); }
.fw-note[open] .fw-note-chev { transform: rotate(180deg); }
.fw-note-body { padding: 0 16px 15px 16px; }
.fw-note-body p { font-size: 1.02rem; line-height: 1.62; color: var(--momops-ink-medium); margin: 0; }

/* Search highlight */
mark.fw-hit { background: var(--momops-gold); color: var(--momops-ink-deep); padding: 0 1px; }

/* ── Insight panel chrome (interactive layer) ───────────────────────────── */
.fw-insight {
  margin: 38px 0 8px; border: 1px solid var(--momops-rule);
  background: var(--momops-paper); box-shadow: var(--shadow-block-soft);
}
.fw-insight-bar { display: flex; align-items: center; gap: 10px; padding: 11px 16px; border-bottom: 1px solid var(--momops-rule); background: var(--momops-ink-deep); }
.fw-insight-bar .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--momops-gold); flex: none; }
.fw-insight-bar b { font-family: var(--font-body); font-weight: 700; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--momops-cream-text); }
.fw-insight-bar small { margin-left: auto; font-size: 11px; color: rgba(255,248,236,0.6); }
.fw-insight-body { padding: 22px; }
.fw-insight-caption { font-size: 0.92rem; line-height: 1.55; color: var(--momops-ink-soft); margin: 16px 0 0; max-width: 60ch; }

/* hide interactions when focused-reading is on */
.fw-focus .fw-insight { display: none; }

/* ── Entrance animation ─────────────────────────────────────────────────── */
/* Visible is the base state. The hidden-then-reveal animation only applies
   once JS marks the page ready (.fw-anim-on), so content is never stuck
   invisible if scripting or scroll/observer callbacks fail. */
@media (prefers-reduced-motion: no-preference) {
  .fw-anim-on .fw-reveal { opacity: 0; transform: translateY(18px); transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out); }
  .fw-anim-on .fw-reveal.is-in { opacity: 1; transform: none; }
}

/* ── Search overlay ─────────────────────────────────────────────────────── */
.fw-search-overlay { position: fixed; inset: 0; z-index: 80; background: rgba(24,39,39,0.34); backdrop-filter: blur(3px); display: flex; align-items: flex-start; justify-content: center; padding: 86px 22px 22px; }
.fw-search-box { width: 100%; max-width: 640px; background: var(--momops-paper); border: 1px solid var(--momops-ink-deep); box-shadow: 10px 10px 0 rgba(24,39,39,0.22); }
.fw-search-input-row { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-bottom: 1px solid var(--momops-rule); }
.fw-search-input-row input { flex: 1; border: 0; outline: 0; background: transparent; font-family: var(--font-body); font-size: 1.15rem; color: var(--momops-ink-deep); }
.fw-search-results { max-height: 52vh; overflow-y: auto; }
.fw-search-results button { display: block; width: 100%; text-align: left; background: transparent; border: 0; border-bottom: 1px solid var(--momops-rule-soft); padding: 13px 18px; cursor: pointer; }
.fw-search-results button:hover { background: rgba(240,191,63,0.12); }
.fw-search-results .r-ch { font-size: 10.5px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: var(--momops-teal-deep); margin-bottom: 4px; }
.fw-search-results .r-sn { font-size: 0.95rem; color: var(--momops-ink-medium); line-height: 1.45; }
.fw-search-empty { padding: 26px 18px; color: var(--momops-ink-soft); font-size: 0.95rem; }

/* ── Footer ─────────────────────────────────────────────────────────────── */
.fw-footer { border-top: 1px solid var(--momops-rule); padding: 48px 0 80px; max-width: 70ch; }
.fw-footer .fw-version-badge { display: inline-flex; align-items: center; gap: 9px; border: 1px solid var(--momops-rule); padding: 8px 13px; font-size: 12px; font-weight: 700; color: var(--momops-ink-deep); margin-bottom: 22px; }
.fw-footer .fw-version-badge .pip { width: 8px; height: 8px; border-radius: 50%; background: var(--momops-teal); }
.fw-footer p { font-size: 1rem; color: var(--momops-ink-soft); line-height: 1.6; }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 920px) {
  .fw-layout { grid-template-columns: 1fr; }
  .fw-toc { display: none; }
  .fw-cover-meta div { padding-bottom: 12px; }
}
@media (max-width: 560px) {
  .fw-topbar-inner { padding: 10px 14px; }
  .fw-controls .fw-btn span.lbl { display: none; }
  .fw-controls .fw-btn { padding: 9px; }
  .fw-main { padding-top: 20px; }
}