/* BPC-157 Medicinal — Data Dense Dashboard
   Aesthetic: data-dense-dashboard
   Fonts: Inter Tight (headings), Inter (body), JetBrains Mono (numerics)
   ================================================================== */

/* ── CSS Custom Properties ──────────────────────────────────────── */
:root {
  /* Palette */
  --primary:            #1F2937;
  --primary-50:         #F4F5F7;
  --primary-100:        #E5E7EB;
  --primary-900:        #0B1220;
  --secondary:          #334155;
  --accent:             #22C55E;
  --accent-green:       #22C55E;
  --accent-green-soft:  #DCFCE7;
  --accent-amber:       #F59E0B;
  --accent-amber-soft:  #FEF3C7;
  --accent-red:         #EF4444;
  --accent-red-soft:    #FEE2E2;
  --accent-blue:        #3B82F6;
  --accent-blue-soft:   #DBEAFE;

  --neutral-50:   #FAFBFC;
  --neutral-100:  #EEF0F3;
  --neutral-200:  #E2E5EA;
  --neutral-300:  #CBD0D8;
  --neutral-500:  #6B7280;
  --neutral-700:  #374151;
  --neutral-900:  #111827;

  --bg:           #F4F5F7;
  --surface:      #FFFFFF;
  --surface-alt:  #FAFBFC;
  --text:         #111827;
  --text-dim:     #374151;
  --text-muted:   #6B7280;
  --text-inverse: #F4F5F7;
  --rule:         #E2E5EA;
  --rule-strong:  #CBD0D8;

  /* Typography */
  --font-heading: 'Inter Tight', 'Inter', -apple-system, 'Segoe UI', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, Consolas, 'IBM Plex Mono', monospace;

  /* Type scale */
  --text-h1:      clamp(2rem, 4.25vw, 3rem);
  --text-h2:      clamp(1.5rem, 2.75vw, 2rem);
  --text-h3:      1.25rem;
  --text-h4:      1rem;
  --text-body:    1rem;
  --text-small:   0.8125rem;
  --text-tiny:    0.6875rem;
  --text-eyebrow: 0.6875rem;
  --text-kpi:     clamp(1.875rem, 3.25vw, 2.5rem);
  --text-kpi-label: 0.6875rem;
  --text-mono:    0.9375rem;

  /* Layout */
  --max-width:        82rem;
  --container-px:     clamp(1rem, 2.5vw, 1.75rem);
  --gutter:           0.75rem;
  --header-height:    56px;
  --radius-tile:      8px;
  --radius-button:    6px;
  --radius-chip:      4px;
  --radius-kpi:       6px;

  /* Transitions */
  --transition-fast:  150ms ease-out;
}

/* ── Reset ──────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, svg, video {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent-blue);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--primary-900);
}

ul, ol {
  padding-left: 1.5rem;
}

/* ── Focus ──────────────────────────────────────────────────────── */
:focus-visible {
  outline: 2.5px solid var(--accent-green);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ── Container ──────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

/* ── Typography ─────────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text);
  line-height: 1.15;
}

h1 { font-size: var(--text-h1); letter-spacing: -0.025em; }
h2 { font-size: var(--text-h2); letter-spacing: -0.02em; }
h3 { font-size: var(--text-h3); letter-spacing: -0.01em; }
h4 { font-size: var(--text-h4); }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 600; }

/* Monospace numerics */
.mono,
code,
.kpi-value,
.pk-value,
[data-mono] {
  font-family: var(--font-mono);
}

/* Eyebrow label */
.eyebrow {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-eyebrow);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* ── Header ─────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--surface);
  border-bottom: 1px solid var(--neutral-200);
}

.site-header .container {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}

.site-brand::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  flex-shrink: 0;
}

.site-nav {
  display: none;
  flex: 1;
}

.site-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.site-nav a {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.625rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.04em;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--text);
  border-bottom-color: var(--accent-green);
}

.nav-dot {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 1px;
  flex-shrink: 0;
}

.nav-dot-green  { background: var(--accent-green); }
.nav-dot-amber  { background: var(--accent-amber); }
.nav-dot-blue   { background: var(--accent-blue); }

/* Edition stamp */
.header-stamp {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  display: none;
}

/* Hamburger */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-button);
  cursor: pointer;
  padding: 0 8px;
  margin-left: auto;
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  height: 1px;
  background: var(--text-dim);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile nav drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--neutral-200);
  z-index: 99;
  padding: 1rem;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-nav a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.75rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  border-radius: var(--radius-button);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.mobile-nav a:hover {
  background: var(--neutral-100);
  color: var(--text);
}

/* ── Main ───────────────────────────────────────────────────────── */
main {
  flex: 1;
  padding-top: 2rem;
  padding-bottom: 4rem;
}

/* ── Page Hero (Dashboard Title Strip) ──────────────────────────── */
.page-hero {
  padding: 2rem 0 1.5rem;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-family: var(--font-heading);
  font-size: var(--text-eyebrow);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-green);
  margin-bottom: 0.75rem;
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 1px;
  background: var(--accent-green);
}

.page-hero h1 {
  margin-bottom: 0.5rem;
}

.hero-sub {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

/* CTA Row */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* ── KPI Strip ──────────────────────────────────────────────────── */
.kpi-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--gutter);
  margin: 1.5rem 0;
}

.kpi-tile {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-kpi);
  padding: 0.875rem;
  min-height: 96px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.kpi-tile:hover {
  border-color: var(--neutral-300);
}

.kpi-header {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  margin-bottom: 0.5rem;
}

.cat-square {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 1px;
  flex-shrink: 0;
}

.cat-green  { background: var(--accent-green); }
.cat-amber  { background: var(--accent-amber); }
.cat-red    { background: var(--accent-red); }
.cat-blue   { background: var(--accent-blue); }

.kpi-label {
  font-family: var(--font-heading);
  font-size: var(--text-kpi-label);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.kpi-value {
  font-family: var(--font-heading);
  font-size: var(--text-kpi);
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
}

.kpi-context {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ── Buttons ────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.625rem 1.125rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-button);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: var(--primary-900);
  border-color: var(--primary-900);
  color: #FFFFFF;
}

.btn-secondary {
  background: var(--surface);
  border-color: var(--neutral-300);
  color: var(--text);
}

.btn-secondary:hover {
  background: var(--neutral-100);
  border-color: var(--neutral-500);
  color: var(--text);
}

/* ── Dashboard Tiles / Cards ────────────────────────────────────── */
.tile {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-tile);
  padding: 1.25rem;
  transition: border-color var(--transition-fast);
}

.tile:hover {
  border-color: var(--neutral-300);
}

.tile-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  margin-bottom: 0.75rem;
}

.tile-eyebrow-label {
  font-family: var(--font-heading);
  font-size: var(--text-eyebrow);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.tile h3 {
  margin-bottom: 0.75rem;
}

/* ── Section Header Tiles ───────────────────────────────────────── */
.section-header {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-tile);
  padding: 1.25rem 1.5rem;
  margin-bottom: var(--gutter);
}

.section-header h2 {
  margin-bottom: 0;
}

/* ── Content Sections ───────────────────────────────────────────── */
.section-content {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-tile);
  padding: 1.5rem;
  margin-bottom: var(--gutter);
}

.section-content h2 {
  margin-bottom: 1rem;
}

.section-content h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-dim);
}

.section-content h3:first-child {
  margin-top: 0;
}

.section-content ul,
.section-content ol {
  margin-bottom: 1rem;
}

.section-content li {
  margin-bottom: 0.375rem;
}

/* ── Finding Tiles Grid ─────────────────────────────────────────── */
.findings-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gutter);
  margin-bottom: var(--gutter);
}

.finding-tile {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-tile);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color var(--transition-fast);
}

.finding-tile:hover {
  border-color: var(--neutral-300);
}

.finding-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.finding-title {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text);
}

.finding-body {
  font-size: 0.9375rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.finding-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
}

/* ── Chips ──────────────────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.1875rem 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: var(--radius-chip);
  border: 1px solid;
  white-space: nowrap;
}

.chip-green {
  color: #15803D;
  border-color: var(--accent-green);
  background: var(--accent-green-soft);
}

.chip-amber {
  color: #92400E;
  border-color: var(--accent-amber);
  background: var(--accent-amber-soft);
}

.chip-red {
  color: #991B1B;
  border-color: var(--accent-red);
  background: var(--accent-red-soft);
}

.chip-blue {
  color: #1D4ED8;
  border-color: var(--accent-blue);
  background: var(--accent-blue-soft);
}

.chip-mono {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0;
  color: var(--text-dim);
  border-color: var(--neutral-200);
  background: var(--neutral-100);
  cursor: pointer;
}

.chip-mono:hover {
  border-color: var(--neutral-300);
  background: var(--neutral-200);
}

/* ── Callouts ───────────────────────────────────────────────────── */
.callout {
  border-radius: var(--radius-tile);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  border: 1px solid;
}

.callout-eyebrow {
  font-family: var(--font-heading);
  font-size: var(--text-eyebrow);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.callout-body {
  font-size: 0.9375rem;
  line-height: 1.6;
}

.callout-green {
  border-color: var(--accent-green);
  background: var(--accent-green-soft);
}
.callout-green .callout-eyebrow { color: #15803D; }

.callout-amber {
  border-color: var(--accent-amber);
  background: var(--accent-amber-soft);
}
.callout-amber .callout-eyebrow { color: #92400E; }

.callout-red {
  border-color: var(--accent-red);
  background: var(--accent-red-soft);
}
.callout-red .callout-eyebrow { color: #991B1B; }

.callout-blue {
  border-color: var(--accent-blue);
  background: var(--accent-blue-soft);
}
.callout-blue .callout-eyebrow { color: #1D4ED8; }

/* ── Inline code / mono pills ───────────────────────────────────── */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--neutral-100);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-chip);
  padding: 0.1rem 0.3rem;
}

/* ── Tables ─────────────────────────────────────────────────────── */
.table-wrap {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-tile);
  overflow-x: auto;
  margin-bottom: var(--gutter);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.data-table thead {
  position: sticky;
  top: var(--header-height);
  z-index: 1;
}

.data-table th {
  background: var(--neutral-100);
  border-bottom: 1px solid var(--neutral-300);
  padding: 0.625rem 0.875rem;
  font-family: var(--font-heading);
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-align: left;
  white-space: nowrap;
}

.data-table th.num { text-align: right; }

.data-table td {
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--neutral-100);
  color: var(--text);
  vertical-align: top;
}

.data-table td.num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  text-align: right;
  white-space: nowrap;
}

.data-table tbody tr:nth-child(even) td {
  background: var(--surface-alt);
}

.data-table tbody tr:hover td {
  background: var(--accent-green-soft);
}

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

/* ── References List ────────────────────────────────────────────── */
.references-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.references-list li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.75rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--neutral-100);
  align-items: start;
}

.references-list li:last-child {
  border-bottom: none;
}

.ref-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  padding-top: 0.125rem;
  font-variant-numeric: tabular-nums;
}

.ref-body {
  font-size: 0.9375rem;
  line-height: 1.6;
}

.ref-body a {
  color: var(--accent-blue);
  font-size: 0.875rem;
  margin-left: 0.375rem;
}

.ref-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: 0.5rem;
}

/* ── Image Figures ──────────────────────────────────────────────── */
.fig-wrap {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-tile);
  overflow: hidden;
  margin-bottom: var(--gutter);
}

.fig-wrap img {
  width: 100%;
  height: auto;
}

.fig-caption {
  padding: 0.75rem 1.25rem;
  font-size: var(--text-small);
  color: var(--text-muted);
  border-top: 1px solid var(--neutral-100);
  font-style: italic;
}

/* ── Chart Container ────────────────────────────────────────────── */
.chart-tile {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-tile);
  padding: 1.25rem;
  margin-bottom: var(--gutter);
}

.chart-wrap {
  position: relative;
  max-height: 320px;
}

/* ── Pathway Matrix ─────────────────────────────────────────────── */
.pathway-matrix-wrap {
  overflow-x: auto;
  margin-bottom: var(--gutter);
}

.pathway-matrix {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-tile);
  padding: 1.25rem;
  min-width: 640px;
}

.matrix-grid {
  display: grid;
  gap: 1px;
  background: var(--surface);
}

.matrix-col-headers {
  display: grid;
  grid-template-columns: 14rem repeat(6, 1fr);
  gap: 1px;
  margin-bottom: 2px;
}

.matrix-col-header {
  font-family: var(--font-heading);
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-align: center;
  padding: 0 0.25rem 0.5rem;
  line-height: 1.3;
}

.matrix-row {
  display: grid;
  grid-template-columns: 14rem repeat(6, 1fr);
  gap: 1px;
  background: var(--neutral-200);
}

.matrix-row-label {
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-dim);
  padding: 0.5rem 0.75rem 0.5rem 0;
  text-align: right;
  line-height: 1.4;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.matrix-cell {
  width: 100%;
  aspect-ratio: 1;
  min-height: 32px;
  background: var(--neutral-100);
  cursor: default;
  transition: filter var(--transition-fast);
}

.matrix-cell:hover {
  filter: brightness(0.92);
}

.matrix-cell-green  { background: var(--accent-green); }
.matrix-cell-amber  { background: var(--accent-amber); }
.matrix-cell-empty  { background: var(--neutral-100); }

/* ── FAQ Accordion ──────────────────────────────────────────────── */
.faq-item {
  background: var(--surface);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius-tile);
  margin-bottom: var(--gutter);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.125rem 1.25rem;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  text-align: left;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--neutral-50);
}

.faq-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  font-size: 1rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-dim);
  border-top: 1px solid var(--neutral-100);
}

.faq-answer[hidden] {
  display: none;
}

.faq-answer p { margin-bottom: 0.75rem; }
.faq-answer p:last-child { margin-bottom: 0; }

/* ── Contact Form ───────────────────────────────────────────────── */
.form-field {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 0.375rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--neutral-300);
  border-radius: var(--radius-button);
  transition: border-color var(--transition-fast);
  appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-green);
  box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.15);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* ── Sidebar (1440px+) ──────────────────────────────────────────── */
.page-layout {
  display: block;
}

.sidebar {
  display: none;
}

.page-content {
  width: 100%;
}

/* ── Footer ─────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--rule-strong);
  background: var(--surface);
  padding: 2.5rem 0 2rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 2rem;
  margin-bottom: 2rem;
}

.footer-col-heading {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 0.75rem;
}

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

.footer-col li {
  margin-bottom: 0.375rem;
}

.footer-col a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--text);
}

.footer-colophon {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  letter-spacing: 0.04em;
}

.footer-disclaimer {
  font-size: var(--text-small);
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Citation superscripts ──────────────────────────────────────── */
sup a {
  font-family: var(--font-mono);
  font-size: 0.7em;
  font-weight: 600;
  color: var(--accent-blue);
  text-decoration: none;
  vertical-align: super;
}

sup a:hover {
  text-decoration: underline;
}

/* ── 404 Page ───────────────────────────────────────────────────── */
.page-404 {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  padding: 2rem;
}

.page-404 .mono {
  font-size: 4rem;
  font-weight: 700;
  color: var(--neutral-300);
  display: block;
  margin-bottom: 1rem;
  line-height: 1;
}

/* ── Reduced Motion ─────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
  html { scroll-behavior: auto; }
}

/* ── Tablet (768px+) ────────────────────────────────────────────── */
@media (min-width: 768px) {
  .site-nav {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .kpi-strip {
    grid-template-columns: repeat(4, 1fr);
  }

  .findings-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ── Desktop (1024px+) ──────────────────────────────────────────── */
@media (min-width: 1024px) {
  .findings-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .header-stamp {
    display: block;
  }
}

/* ── Wide (1440px+) ─────────────────────────────────────────────── */
@media (min-width: 1440px) {
  .page-layout {
    display: grid;
    grid-template-columns: 14rem 1fr;
    gap: 2rem;
    align-items: start;
  }

  .sidebar {
    display: block;
    position: sticky;
    top: calc(var(--header-height) + 2rem);
    background: var(--surface);
    border: 1px solid var(--neutral-200);
    border-radius: var(--radius-tile);
    padding: 1.25rem;
  }

  .sidebar-nav {
    margin-bottom: 1.5rem;
  }

  .sidebar-section-label {
    font-family: var(--font-heading);
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    display: block;
  }

  .sidebar-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }

  .sidebar-nav li {
    margin-bottom: 0.25rem;
  }

  .sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.25rem 0;
    transition: color var(--transition-fast);
  }

  .sidebar-nav a:hover {
    color: var(--text);
  }

  .sidebar-stats {
    margin-bottom: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--neutral-100);
  }

  .sidebar-stat {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.375rem;
  }

  .sidebar-stat-key {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  .sidebar-stat-val {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-dim);
    white-space: nowrap;
  }

  .sidebar-status {
    padding-top: 1rem;
    border-top: 1px solid var(--neutral-100);
  }

  .sidebar-status-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
  }

  .status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
  }
}