@import url('/assets/fonts/fonts.css');

:root {
  --pb-paper: #F9F6ED;
  --pb-vellum: #EFEAD8;
  --pb-ink: #151E2E;
  --pb-ink-soft: #3D495C;
  --pb-prussian: #1E3A63;
  --pb-prussian-hover: #142847;
  --pb-ambergris: #9A7434;
  --pb-rule: rgba(21, 30, 46, 0.16);
  --pb-rule-strong: #151E2E;
  --pb-safe: #1F5E4B;
  --pb-warn: #9A5B13;
  --pb-critical: #8E2430;
  --font-display: 'Cardo', Georgia, serif;
  --font-sans: 'Jost', system-ui, sans-serif;
  --font-mono: 'B612 Mono', monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--pb-paper);
  color: var(--pb-ink);
  font-family: var(--font-sans);
  font-size: 1.03rem;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--pb-prussian);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--pb-prussian-hover);
}

:focus-visible {
  outline: 2px solid var(--pb-prussian);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--pb-prussian);
  color: var(--pb-paper);
  padding: 0.65rem 1.1rem;
  z-index: 100;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-decoration: none;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

.pb-shell {
  max-width: 76rem;
  margin: 0 auto;
  padding: 0 2.25rem;
}

/* Parisian Literary Masthead */
.pb-utility {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--pb-rule);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pb-ink-soft);
}

.langbar {
  display: inline-flex;
  gap: 0.35rem;
}

.langbar a {
  text-decoration: none;
  color: var(--pb-ink);
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--pb-rule-strong);
  font-weight: 700;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
}

.langbar a.active {
  background: var(--pb-prussian);
  color: var(--pb-paper);
  border-color: var(--pb-prussian);
}

.pb-masthead {
  text-align: center;
  padding: 1.85rem 0 1.35rem;
  border-bottom: 2px solid var(--pb-rule-strong);
}

.pb-kicker {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--pb-ambergris);
  margin-bottom: 0.35rem;
}

.pb-wordmark {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 4.4vw, 3.45rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0;
  color: var(--pb-ink);
}

.pb-wordmark a {
  color: inherit;
  text-decoration: none;
}

.pb-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.65rem 1.75rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--pb-rule-strong);
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.pb-nav a {
  color: var(--pb-ink);
  text-decoration: none;
  padding: 0.35rem 0.15rem;
  border-bottom: 2px solid transparent;
}

.pb-nav a[aria-current="page"] {
  color: var(--pb-prussian);
  border-bottom-color: var(--pb-prussian);
  font-weight: 600;
}

/* Editorial Hero */
.pb-hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  padding: 2.75rem 0;
  border-bottom: 1px solid var(--pb-rule);
  align-items: start;
}

.pb-hero > *,
.pb-monograph-grid > *,
.pb-workbench-grid > * {
  min-width: 0;
}

.pb-page-head {
  padding: 2.35rem 0 1.85rem;
  border-bottom: 1px solid var(--pb-rule);
}

h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--pb-ink);
  font-weight: 700;
}

h1 {
  font-size: clamp(2.05rem, 3.5vw, 3.05rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
  text-wrap: balance;
  margin: 0 0 1rem;
}

h2 {
  font-size: clamp(1.5rem, 2.4vw, 1.95rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 0 0 0.85rem;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.25;
  margin: 1.65rem 0 0.5rem;
}

.pb-lead {
  font-size: 1.08rem;
  color: var(--pb-ink-soft);
  max-width: 62ch;
  margin: 0 0 1.35rem;
}

.pb-prose {
  max-width: 49rem;
}

/* GEO Link-Free Answer Capsule */
.pb-answer-capsule {
  background: var(--pb-vellum);
  border-left: 4px solid var(--pb-prussian);
  padding: 1.15rem 1.4rem;
  margin: 1.5rem 0 1rem;
}

.pb-capsule-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--pb-prussian);
  margin-bottom: 0.35rem;
}

.answer-box {
  font-size: 1rem;
  line-height: 1.65;
  font-weight: 500;
  color: var(--pb-ink);
}

.small.faq-src {
  font-size: 0.85rem;
  color: var(--pb-ink-soft);
  margin: 0.45rem 0 1.25rem;
}

/* Editorial Figures */
.pb-figure {
  margin: 0;
}

.pb-figure img {
  width: 100%;
  height: auto;
  display: block;
  border-bottom: 3px solid var(--pb-ambergris);
}

.pb-figcaption {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.45;
  color: var(--pb-ink-soft);
  margin-top: 0.65rem;
}

/* Sections & Sticky Folio Rail */
.pb-section {
  padding: 2.65rem 0;
  border-bottom: 1px solid var(--pb-rule);
}

.pb-monograph-grid {
  display: grid;
  grid-template-columns: 230px 1fr;
  gap: 3rem;
  padding: 2.5rem 0;
  align-items: start;
}

.pb-rail {
  position: sticky;
  top: 1.75rem;
  border-top: 2px solid var(--pb-prussian);
  padding-top: 1rem;
}

.pb-rail-title {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pb-ambergris);
  margin-bottom: 0.75rem;
}

.pb-rail a {
  display: block;
  padding: 0.42rem 0;
  border-bottom: 1px solid var(--pb-rule);
  text-decoration: none;
  color: var(--pb-ink);
  font-size: 0.9rem;
}

.pb-rail a:hover {
  color: var(--pb-prussian);
}

/* Interactive Olfactory Pyramid & IFRA Workbench */
.pb-workbench {
  background: var(--pb-vellum);
  border-top: 2px solid var(--pb-prussian);
  border-bottom: 2px solid var(--pb-prussian);
  padding: 1.75rem;
  margin: 1.5rem 0;
}

.pb-workbench-dark {
  background: var(--pb-ink);
  color: var(--pb-paper);
  border-top: 4px solid var(--pb-ambergris);
  padding: 2rem;
  margin: 1.75rem 0;
}

.pb-workbench-dark .pb-control-label,
.pb-workbench-dark .pb-stat-label {
  color: rgba(249, 246, 237, 0.78);
}

.pb-workbench-dark .pb-stat-val {
  color: var(--pb-paper);
}

.pb-workbench-dark .pb-pill {
  background: transparent;
  color: var(--pb-paper);
  border-color: rgba(249, 246, 237, 0.35);
}

.pb-workbench-dark .pb-pill[aria-pressed="true"] {
  background: var(--pb-ambergris);
  color: var(--pb-ink);
  border-color: var(--pb-ambergris);
}

.pb-workbench-dark .pb-stepper-btn {
  background: transparent;
  color: var(--pb-paper);
  border-color: rgba(249, 246, 237, 0.45);
}

.pb-workbench-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: start;
}

.pb-control-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--pb-ink-soft);
  margin-bottom: 0.5rem;
}

.pb-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.25rem;
}

.pb-pill {
  appearance: none;
  background: var(--pb-paper);
  color: var(--pb-ink);
  border: 1px solid var(--pb-rule-strong);
  padding: 0.6rem 1rem;
  min-height: 44px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
}

.pb-pill[aria-pressed="true"] {
  background: var(--pb-prussian);
  color: var(--pb-paper);
  border-color: var(--pb-prussian);
}

.pb-stepper {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.pb-stepper-btn {
  appearance: none;
  background: var(--pb-paper);
  color: var(--pb-ink);
  border: 1px solid var(--pb-rule-strong);
  min-width: 44px;
  min-height: 44px;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
}

.pb-stepper-val {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
  min-width: 5.5rem;
  text-align: center;
}

.pb-status-banner {
  padding: 0.95rem 1.15rem;
  border-left: 4px solid var(--pb-safe);
  background: rgba(31, 94, 75, 0.1);
  margin-bottom: 1.15rem;
}

.pb-status-banner[data-tier="warn"] {
  border-left-color: var(--pb-ambergris);
  background: rgba(154, 116, 52, 0.14);
}

.pb-status-banner[data-tier="critical"] {
  border-left-color: var(--pb-critical);
  background: rgba(142, 36, 48, 0.14);
}

.pb-status-title {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.pb-readout-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--pb-rule);
}

.pb-stat-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--pb-ink-soft);
}

.pb-stat-val {
  font-family: var(--font-display);
  font-size: 1.48rem;
  font-weight: 700;
  color: var(--pb-prussian);
  font-variant-numeric: tabular-nums;
  margin-top: 0.2rem;
}

.pb-pyramid-bars {
  margin-top: 1rem;
  display: grid;
  gap: 0.55rem;
}

.pb-bar-row {
  display: grid;
  grid-template-columns: 95px 1fr 56px;
  gap: 0.75rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.pb-bar-track {
  height: 10px;
  background: rgba(128, 128, 128, 0.22);
  overflow: hidden;
}

.pb-bar-fill {
  height: 100%;
  background: var(--pb-ambergris);
  transition: width 0.25s ease;
}

/* Booktabs Editorial Tables (Safe cell invariants) */
.table-responsive-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  border-top: 2px solid var(--pb-ink);
  border-bottom: 2px solid var(--pb-ink);
  font-size: 0.92rem;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.75rem 0.9rem;
  background: var(--pb-vellum);
  color: var(--pb-ink);
  border-bottom: 1.5px solid var(--pb-ink);
}

tbody td {
  padding: 0.78rem 0.9rem;
  border-bottom: 1px solid var(--pb-rule);
  vertical-align: top;
  color: var(--pb-ink);
}

tbody tr:last-child td {
  border-bottom: none;
}

.pb-badge:not(td):not(th) {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  background: var(--pb-vellum);
  border: 1px solid var(--pb-rule);
  white-space: nowrap;
}

/* Inline SVG Data Plate */
.pb-svg-wrap {
  margin: 1.5rem 0;
  background: var(--pb-paper);
  border: 1px solid var(--pb-rule);
  padding: 1.25rem;
}

.pb-svg-wrap svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Archival #archive-* Entries & Quiet Disclosure Boxes */
.pb-archive-entry {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--pb-rule);
}

.pb-archive-meta {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--pb-ambergris);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.ref-disclosure,
.clinical-deepdive {
  margin: 0.9rem 0;
  border-top: 1px solid var(--pb-rule);
  border-bottom: 1px solid var(--pb-rule);
  padding: 0.65rem 0;
}

.ref-disclosure summary,
.clinical-deepdive summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--pb-prussian);
  font-weight: 700;
  list-style: none;
}

.ref-disclosure[open] summary,
.clinical-deepdive[open] summary {
  margin-bottom: 0.6rem;
}

/* Two-Column Literary Feature */
.pb-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.pb-two-col > * {
  min-width: 0;
}

/* FAQ List */
.pb-faq-item {
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--pb-rule);
}

.pb-faq-q {
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 700;
  margin: 0 0 0.45rem;
}

.faq-a {
  color: var(--pb-ink-soft);
}

/* Footer (Zero Telemetry, Traditional 3-Part Colophon) */
.pb-footer {
  padding: 2.25rem 0 3rem;
  border-top: 2px solid var(--pb-ink);
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2rem;
  font-size: 0.9rem;
  color: var(--pb-ink-soft);
}

.pb-footer-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--pb-ink);
  margin-bottom: 0.45rem;
}

.pb-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.pb-footer li {
  margin-bottom: 0.35rem;
}

@keyframes fadeReveal {
  from { opacity: 0.92; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.pb-fade {
  animation: fadeReveal 0.3s ease-out both;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pb-fade { animation: none; }
  .pb-bar-fill { transition: none; }
}

@media (max-width: 900px) {
  .pb-shell { padding: 0 1.25rem; }
  .pb-hero,
  .pb-monograph-grid,
  .pb-workbench-grid,
  .pb-readout-grid,
  .pb-two-col,
  .pb-footer {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .pb-rail { position: static; }
}

@media print {
  .pb-nav, .langbar, .skip-link { display: none; }
  body { background: #fff; color: #000; }
}