/* ============================================================
   ALZHEIMER'S MICROGLIA SCROLLYTELLING — STYLES
   Inspired by pudding.cool editorial aesthetic
   ============================================================ */

/* ─── DESIGN TOKENS ─── */
:root {
  --clr-bg:          #faf9f6;
  --clr-bg-dark:     #0f0f14;
  --clr-text:        #1a1a2e;
  --clr-text-light:  #5a5a7a;
  --clr-text-inv:    #f0ede8;
  --clr-accent:      #e85d04;
  --clr-accent-2:    #0077b6;
  --clr-microglia:   #2ec4b6;
  --clr-neuron:      #e9c46a;
  --clr-astrocyte:   #8ecae6;
  --clr-oligo:       #a8dadc;
  --clr-opc:         #c77dff;
  --clr-border:      #e0ddd6;
  --clr-card:        #ffffff;

  --font-serif:      'Playfair Display', Georgia, serif;
  --font-sans:       'Inter', system-ui, -apple-system, sans-serif;

  --step-width:      min(560px, 90vw);
  --graphic-width:   calc(100vw - var(--step-width) - 60px);

  --radius-sm:       6px;
  --radius-md:       12px;
  --radius-lg:       20px;

  --shadow-sm:       0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:       0 8px 32px rgba(0,0,0,0.10);

  --transition:      0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 18px; }
body {
  font-family: var(--font-sans);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

/* ─── NAVIGATION ─── */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 2rem;
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--transition), box-shadow var(--transition);
}
.site-nav.scrolled {
  box-shadow: var(--shadow-sm);
}
.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
}
.nav-logo-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--clr-microglia);
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav-link {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clr-text-light);
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.nav-link:hover { color: var(--clr-text); }
.nav-link--scientist {
  background: var(--clr-text);
  color: #fff;
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  transition: background var(--transition);
}
.nav-link--scientist:hover { background: var(--clr-accent); color: #fff; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; font-size: 1.2rem; }

/* ─── HERO ─── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 100px 2rem 4rem;
  text-align: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 60%, rgba(46,196,182,0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 30%, rgba(232,93,4,0.08) 0%, transparent 50%),
              linear-gradient(160deg, #faf9f6 60%, #f0f4f8 100%);
}
.hero-particles { position: absolute; inset: 0; }
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 780px;
  margin: 0 auto;
}
.hero-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-microglia);
  margin-bottom: 1.25rem;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  margin-bottom: 1.5rem;
}
.hero-title em {
  font-style: italic;
  color: var(--clr-accent);
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--clr-text-light);
  max-width: 600px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}
.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--clr-text-light);
  margin-bottom: 2.5rem;
}
.hero-meta-sep { opacity: 0.4; }
.hero-sci-link {
  color: var(--clr-accent-2);
  font-weight: 500;
  transition: opacity var(--transition);
}
.hero-sci-link:hover { opacity: 0.7; }
.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--clr-text);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 0.85rem 2rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.hero-cta:hover { background: var(--clr-accent); transform: translateY(-2px); }
.hero-cta-arrow { font-size: 1.1rem; transition: transform 0.4s ease; }
.hero-cta:hover .hero-cta-arrow { transform: translateY(4px); }
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  opacity: 0.6;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* ─── SCROLLY SECTIONS ─── */
.scroll-section {
  position: relative;
  display: flex;
  align-items: flex-start;
}

/* Sticky graphic panel (right on desktop) */
.sticky-graphic {
  position: sticky;
  top: 70px;
  flex: 1 1 auto;
  height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1.5rem 1.5rem 1rem;
  order: 2;
}
.graphic-inner {
  width: 100%;
  max-width: 700px;
  background: var(--clr-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
  border: 1px solid var(--clr-border);
}
.chart-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  margin-bottom: 0.75rem;
}
.chart-svg {
  width: 100%;
  display: block;
}
.brain-map-svg { height: 420px; }
.chart-caption {
  font-size: 0.78rem;
  color: var(--clr-text-light);
  margin-top: 0.75rem;
  line-height: 1.5;
}
.highlight-orange { color: var(--clr-accent); font-weight: 600; }
.highlight-teal   { color: var(--clr-microglia); font-weight: 600; }

/* GWAS HTML legend (permanent, replaces SVG overlay) */
.gwas-legend {
  display: inline-flex;
  gap: 1rem;
  margin-left: 0.6rem;
  flex-wrap: wrap;
  align-items: center;
}
.gwas-legend-item {
  display: inline-flex;
  align-items: center;
  font-size: 0.78rem;
  color: var(--clr-text-light);
}

/* Volcano annotation caption (hidden by default, shown via JS class toggle) */
.annot-caption {
  font-size: 0.82rem;
  line-height: 1.55;
  background: #fff8f5;
  border: 1.5px solid var(--clr-accent);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  margin-top: 0.6rem;
  color: #444;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s ease, opacity 0.35s ease, padding 0.35s ease;
  padding-top: 0;
  padding-bottom: 0;
}
.annot-caption.visible {
  max-height: 120px;
  opacity: 1;
  padding: 0.65rem 0.9rem;
}
.annot-caption strong {
  color: var(--clr-accent);
}

/* Scroll steps panel (left) */
.scroll-steps {
  flex: 0 0 var(--step-width);
  order: 1;
  padding: 0 2rem;
  /* extra top/bottom padding to create scroll distance */
  padding-top: calc(50vh - 200px);
  padding-bottom: calc(50vh - 200px);
}
.step {
  min-height: 80vh;
  display: flex;
  align-items: center;
  padding: 2rem 0;
}
.step-inner {
  background: var(--clr-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  opacity: 0.4;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
}
.step.is-active .step-inner {
  opacity: 1;
  transform: translateY(0);
  box-shadow: var(--shadow-md);
  border-color: var(--clr-microglia);
}
.step-number {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-microglia);
  margin-bottom: 0.75rem;
}
.step-inner h2 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
  color: var(--clr-text);
}
.step-inner h2 em { font-style: italic; color: var(--clr-accent); }
.step-inner p {
  font-size: 0.95rem;
  color: var(--clr-text-light);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}
.step-inner p:last-child { margin-bottom: 0; }
.step-inner strong { color: var(--clr-text); font-weight: 600; }
.step-inner em { font-style: italic; color: var(--clr-accent); }

/* ─── NARRATIVE SECTIONS (full width) ─── */
.narrative-section {
  padding: 6rem 2rem;
  background: var(--clr-bg);
}
.narrative-section--dark {
  background: var(--clr-bg-dark);
  color: var(--clr-text-inv);
}
.narrative-inner {
  max-width: 900px;
  margin: 0 auto;
}
.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-microglia);
  margin-bottom: 1rem;
}
.section-tag--light { color: rgba(46,196,182,0.9); }
.narrative-h2 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--clr-text);
}
.narrative-h2--light { color: var(--clr-text-inv); }
.narrative-h2 em { font-style: italic; color: var(--clr-accent); }
.narrative-p {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--clr-text-light);
  margin-bottom: 1.5rem;
  max-width: 720px;
}
.narrative-p--light { color: rgba(240,237,232,0.8); }

/* Bottleneck cards */
.bottleneck-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin: 2.5rem 0;
}
.bottleneck-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.bottleneck-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.bottleneck-card--highlight {
  border-color: var(--clr-accent);
  background: linear-gradient(135deg, #fff8f5 0%, #fff 100%);
}
.bottleneck-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.bottleneck-card h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--clr-text);
}
.bottleneck-card p {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--clr-text-light);
}
.bottleneck-card p strong { color: var(--clr-text); }
.bottleneck-arrow {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--clr-text-light);
  font-size: 0.82rem;
  font-style: italic;
  margin-top: 1rem;
}
.arrow-line { flex: 1; height: 1px; background: var(--clr-border); }

/* Tech flow */
.tech-flow {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin-top: 3rem;
}
.tech-step {
  flex: 1;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: background var(--transition);
}
.tech-step:hover { background: rgba(255,255,255,0.10); }
.tech-step-num {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--clr-microglia);
  color: var(--clr-bg-dark);
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.85rem;
}
.tech-step h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--clr-text-inv);
  margin-bottom: 0.5rem;
}
.tech-step p {
  font-size: 0.88rem;
  line-height: 1.6;
  color: rgba(240,237,232,0.7);
  margin-bottom: 1rem;
}
.tech-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(46,196,182,0.2);
  color: var(--clr-microglia);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
}
.tech-flow-arrow {
  display: flex;
  align-items: center;
  padding: 0 0.5rem;
  font-size: 1.5rem;
  color: rgba(255,255,255,0.25);
  flex-shrink: 0;
}

/* ─── AIMS SECTION ─── */
.aims-section {
  padding: 6rem 2rem;
  background: #f5f3ef;
}
.aims-inner { max-width: 1200px; margin: 0 auto; }
.aims-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
  color: var(--clr-text);
}
.aims-subtitle {
  font-size: 1rem;
  color: var(--clr-text-light);
  margin-bottom: 3rem;
  max-width: 580px;
}
.aims-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.aim-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.aim-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.aim-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.aim-badge {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
}
.aim-badge--active {
  background: rgba(46,196,182,0.15);
  color: #1a9e92;
}
.aim-badge--upcoming {
  background: rgba(90,90,122,0.1);
  color: var(--clr-text-light);
}
.aim-number {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-light);
}
.aim-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 0.65rem;
  letter-spacing: -0.01em;
}
.aim-desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--clr-text-light);
  margin-bottom: 1.25rem;
}
.aim-progress-bar {
  height: 6px;
  background: #e8e5df;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}
.aim-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-microglia), var(--clr-accent-2));
  border-radius: 999px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  width: 0 !important; /* overridden by JS after animation triggers */
}
.aim-progress-label {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--clr-text-light);
  margin-bottom: 1rem;
}
.aim-progress-pct {
  font-weight: 700;
  color: var(--clr-microglia);
  white-space: nowrap;
}
.aim-milestones { display: flex; flex-direction: column; gap: 0.4rem; }
.milestone {
  font-size: 0.82rem;
  color: var(--clr-text-light);
  padding-left: 0.25rem;
}
.milestone--done { color: #1a9e92; font-weight: 500; }
.milestone--active { color: var(--clr-accent); font-weight: 500; }

/* ─── CLOSING ─── */
.closing-section {
  padding: 8rem 2rem;
  text-align: center;
  background: linear-gradient(180deg, var(--clr-bg) 0%, #e8f4f8 100%);
}
.closing-inner { max-width: 700px; margin: 0 auto; }
.closing-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  margin-bottom: 1.5rem;
  line-height: 1.2;
}
.closing-p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--clr-text-light);
  margin-bottom: 1rem;
}
.closing-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin: 2.5rem 0;
}
.btn {
  display: inline-block;
  padding: 0.8rem 1.75rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
  cursor: pointer;
}
.btn--primary {
  background: var(--clr-text);
  color: #fff;
}
.btn--primary:hover { background: var(--clr-accent); transform: translateY(-2px); }
.btn--secondary {
  background: transparent;
  color: var(--clr-text);
  border: 2px solid var(--clr-border);
}
.btn--secondary:hover { border-color: var(--clr-text); transform: translateY(-2px); }
.closing-credit {
  font-size: 0.75rem;
  color: var(--clr-text-light);
  line-height: 1.6;
  opacity: 0.6;
}

/* ─── FOOTER ─── */
.site-footer {
  padding: 3rem 2rem;
  background: var(--clr-text);
  color: var(--clr-text-inv);
}
.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.85rem;
}
.footer-col strong {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-microglia);
  margin-bottom: 0.5rem;
}
.footer-col a {
  color: rgba(240,237,232,0.65);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--clr-text-inv); }
.footer-col span { color: rgba(240,237,232,0.45); }

/* ─── D3 TOOLTIPS ─── */
.tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--clr-text);
  color: var(--clr-text-inv);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  line-height: 1.4;
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transition: opacity 0.2s;
  z-index: 9999;
  max-width: 220px;
  white-space: normal;
}
.tooltip.visible { opacity: 1; }
.tooltip strong { display: block; color: var(--clr-microglia); margin-bottom: 0.15rem; }

/* Brain tooltip */
.brain-tooltip {
  position: absolute;
  background: var(--clr-text);
  color: var(--clr-text-inv);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-size: 0.82rem;
  max-width: 220px;
  pointer-events: none;
  box-shadow: var(--shadow-md);
  z-index: 100;
  line-height: 1.5;
}
.brain-tooltip.hidden { display: none; }
.brain-tooltip h4 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}
.brain-tooltip .score {
  display: inline-block;
  background: var(--clr-microglia);
  color: var(--clr-bg-dark);
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  margin-top: 0.35rem;
}

/* ─── SCIENTIST PAGE PREVIEW (shared styles) ─── */
.sci-header {
  background: var(--clr-bg-dark);
  color: var(--clr-text-inv);
  padding: 100px 2rem 3rem;
  text-align: center;
}
.sci-header h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}
.sci-header p {
  font-size: 1rem;
  color: rgba(240,237,232,0.65);
  max-width: 600px;
  margin: 0 auto;
}
.sci-tabs {
  position: sticky;
  top: 58px;
  z-index: 500;
  background: rgba(15,15,20,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 0 2rem;
}
.sci-tabs-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 0;
}
.sci-tab {
  padding: 0.9rem 1.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(240,237,232,0.5);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: var(--font-sans);
}
.sci-tab:hover { color: rgba(240,237,232,0.9); }
.sci-tab.active {
  color: var(--clr-microglia);
  border-bottom-color: var(--clr-microglia);
}
.sci-panel {
  display: none;
  padding: 3rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}
.sci-panel.active { display: block; }

/* Dashboard cards */
.dash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
.dash-card {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.dash-card-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  margin-bottom: 0.5rem;
}
.dash-card-value {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1;
  margin-bottom: 0.25rem;
}
.dash-card-sub {
  font-size: 0.82rem;
  color: var(--clr-text-light);
}
.dash-card--highlight .dash-card-value { color: var(--clr-microglia); }

/* Scientist aims table */
.aims-table-wrap {
  overflow-x: auto;
  margin-bottom: 2rem;
}
.aims-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.aims-table th {
  text-align: left;
  padding: 0.6rem 1rem;
  background: #f0ede8;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-text-light);
  border-bottom: 2px solid var(--clr-border);
}
.aims-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--clr-border);
  vertical-align: top;
  line-height: 1.5;
  color: var(--clr-text);
}
.aims-table tr:hover td { background: #faf9f6; }
.status-pill {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}
.status-pill--active   { background: rgba(46,196,182,0.15); color: #1a9e92; }
.status-pill--upcoming { background: rgba(90,90,122,0.1);  color: var(--clr-text-light); }
.status-pill--planned  { background: rgba(232,93,4,0.1);   color: var(--clr-accent); }

/* Data download links */
.data-links { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.5rem; }
.data-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-accent-2);
  transition: background var(--transition), border-color var(--transition);
}
.data-link:hover { background: #e8f4f8; border-color: var(--clr-accent-2); }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .scroll-section { flex-direction: column; }
  .sticky-graphic {
    position: relative;
    top: 0;
    height: auto;
    min-height: 50vh;
    order: 1;
    padding: 1rem;
  }
  .scroll-steps {
    order: 2;
    flex: none;
    width: 100%;
    padding: 0 1rem;
    padding-top: 2rem;
    padding-bottom: 2rem;
  }
  .step { min-height: 60vh; }
  .bottleneck-grid { grid-template-columns: 1fr; }
  .tech-flow { flex-direction: column; }
  .tech-flow-arrow { transform: rotate(90deg); text-align: center; }
  .aims-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
}

@media (max-width: 600px) {
  .hero-title { font-size: 2.2rem; }
  .narrative-h2 { font-size: 1.75rem; }
  .aims-title { font-size: 1.75rem; }
  .step-inner h2 { font-size: 1.3rem; }
}

/* ─── UTILITY ─── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.hidden { display: none !important; }

/* ─── ANIMATIONS (scroll-triggered via .revealed class) ─── */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal-on-scroll.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ═══════════════════════════════════════════════════════════
   STEP 4 — EDUCATIONAL PREQUEL
   ═══════════════════════════════════════════════════════════ */

/* ─── Opening Schematic ─── */
/* ─── Section 0A: Opening schematic — dark editorial theme ─── */
.prequel-schematic-section {
  position: relative;
  background: #1a1a2e;
  padding: 5rem 1.5rem 4rem;
  overflow: hidden;
}
/* Soft radial glows (teal + orange) matching hero technique */
.prequel-schematic-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 25% 55%, rgba(46,196,182,0.10) 0%, transparent 60%),
    radial-gradient(ellipse at 75% 40%, rgba(232,93,4,0.08)   0%, transparent 55%);
  pointer-events: none;
}
/* Thin bottom-edge separator transitioning into next section */
.prequel-schematic-section::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(to right, transparent, rgba(46,196,182,0.4), rgba(232,93,4,0.3), transparent);
}
.prequel-schematic-inner {
  position: relative; /* above ::before pseudo */
  max-width: 900px;
  margin: 0 auto;
}
.schematic-header {
  text-align: center;
  margin-bottom: 3rem;
}
/* Eyebrow label matching .hero-eyebrow */
.schematic-eyebrow {
  font-family: Inter, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-microglia, #2ec4b6);
  margin-bottom: 0.6rem;
}
.schematic-title {
  font-family: 'Playfair Display', serif;
  font-size: 2.25rem;
  color: var(--clr-text-inv, #f0ede8);
  margin-bottom: 0.6rem;
  line-height: 1.2;
}
.schematic-sub {
  font-family: Inter, sans-serif;
  font-size: 1.05rem;
  color: rgba(240,237,232,0.65);
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Hypothesis cards */
.hypothesis-cards {
  display: flex;
  align-items: stretch;
  margin-bottom: 3.5rem;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 32px rgba(0,0,0,0.35);
}
.hypothesis-card {
  flex: 1;
  padding: 2rem 1.75rem;
}
.hypothesis-card--old {
  background: rgba(255,255,255,0.04);
  border: 1.5px solid rgba(232,93,4,0.35);
  border-right: none;
  border-radius: 14px 0 0 14px;
}
.hypothesis-card--new {
  background: rgba(46,196,182,0.08);
  border: 1.5px solid rgba(46,196,182,0.45);
  border-left: none;
  border-radius: 0 14px 14px 0;
}
.hyp-tag {
  font-family: Inter, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(232,93,4,0.85);
  margin-bottom: 0.5rem;
}
.hypothesis-card--new .hyp-tag { color: #2ec4b6; }
.hyp-icon {
  margin-bottom: 1rem;
  display: block;
  line-height: 1;
}
.hyp-list {
  list-style: none;
  padding: 0; margin: 0;
  font-family: Inter, sans-serif;
  font-size: 0.9rem;
  line-height: 2;
  color: var(--clr-text-inv, #f0ede8);
}
.hyp-list li::before { content: '✗  '; color: rgba(232,93,4,0.6); }
.hyp-list-success li::before { content: '✓  '; color: #2ec4b6; }

/* Paradigm Shift divider — horizontal arrow */
.hyp-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem 0.5rem;
  gap: 0.25rem;
  min-width: 56px;
  background: rgba(232,93,4,0.06);
  border-top: 1.5px solid rgba(232,93,4,0.25);
  border-bottom: 1.5px solid rgba(232,93,4,0.25);
}
.hyp-shift-label {
  font-family: Inter, sans-serif;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #e85d04;
  text-align: center;
  line-height: 1.3;
}
.hyp-shift-arrow {
  font-size: 2rem;
  color: #e85d04;
  line-height: 1;
}

/* Concept web */
.concept-web-section {
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 2.5rem;
}
.concept-web-label {
  font-family: Inter, sans-serif;
  font-size: 0.85rem;
  color: rgba(240,237,232,0.55);
  margin-bottom: 1rem;
  font-style: italic;
}
.concept-web-container {
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  background: rgba(255,255,255,0.04);
  padding: 1rem 0.5rem;
  overflow: hidden;
}
.concept-web-svg {
  width: 100%;
  height: auto;
  min-height: 260px;
  display: block;
}
/* Tooltip for concept web nodes */
.cw-tooltip {
  position: fixed;
  z-index: 9000;
  background: #1a1a2e;
  color: #eee;
  font-family: Inter, sans-serif;
  font-size: 0.78rem;
  line-height: 1.55;
  padding: 0.55rem 0.85rem;
  border-radius: 8px;
  max-width: 250px;
  pointer-events: none;
  box-shadow: 0 4px 18px rgba(0,0,0,0.3);
}

/* ─── Prequel scrollytelling section ─── */
.prequel-section { /* inherits .scroll-section */ }
.prequel-chart-svg { min-height: 360px; }

/* Hide step numbers in prequel (clean magazine style) */
.prequel-section .step-number { display: none; }

/* CTA button inside slide 5 */
.step-cta-row { margin-top: 1.5rem; }
.step-cta-btn {
  display: inline-block;
  background: #e85d04;
  color: #fff;
  font-family: Inter, sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.65rem 1.4rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, transform 0.15s;
  text-decoration: none;
}
.step-cta-btn:hover {
  background: #c94d02;
  transform: translateY(-2px);
}

/* ─── Prequel SVG animations ─── */
@keyframes pqFogPulse {
  0%, 100% { opacity: 0.85; }
  50%       { opacity: 1; }
}
.pq-fog-ellipse { animation: pqFogPulse 3s ease-in-out infinite; }

@keyframes pqEnhancerPulse {
  0%, 100% { filter: drop-shadow(0 0 3px #2ec4b6); }
  50%       { filter: drop-shadow(0 0 10px #2ec4b6); }
}
.pq-enhancer-glow { animation: pqEnhancerPulse 1.8s ease-in-out infinite; }

/* ─── Prequel graphic dark card + image layers ─── */
.prequel-graphic-inner {
  background: #0c0c1e;
  border-color: #1e1e3a;
  position: relative;
  overflow: hidden;
}
/* Chart label + SVG float above background layers */
.prequel-chart-label {
  position: relative;
  z-index: 2;
  color: rgba(200,200,220,0.6);
}
.prequel-chart-svg {
  position: relative;
  z-index: 2;
}
/* Prequel step cards — dark theme to match graphic */
.prequel-section .step-inner {
  background: rgba(14,14,30,0.92);
  border-color: rgba(46,196,182,0.18);
  color: #e8e5f0;
}
.prequel-section .step.is-active .step-inner {
  border-color: #2ec4b6;
  box-shadow: 0 8px 36px rgba(0,0,0,0.55);
}
.prequel-section .step-inner h2 { color: #f0ede8; }
.prequel-section .step-inner p  { color: rgba(220,215,235,0.75); }
.prequel-section .step-inner strong { color: #f0ede8; }

/* ─── Conclusion / evidence section ─── */
.conclusion-section {
  background: var(--clr-bg-dark, #0f0f14);
  padding: 5rem 1.5rem 4rem;
}
.conclusion-inner {
  max-width: 860px;
  margin: 0 auto;
}
.conclusion-title {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  color: #f0ede8;
  text-align: center;
  margin-bottom: 0.6rem;
  line-height: 1.2;
}
.conclusion-sub {
  font-family: Inter, sans-serif;
  font-size: 0.98rem;
  color: #8888a0;
  text-align: center;
  margin-bottom: 2.5rem;
}

/* Pillar grid */
.pillar-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 3rem;
}
.pillar-card {
  background: #16162a;
  border: 1px solid #2a2a44;
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.pillar-card.open { border-color: #2ec4b6; }
.pillar-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
}
.pillar-header:hover .pillar-title { color: #2ec4b6; }
.pillar-icon  { font-size: 1.2rem; flex-shrink: 0; }
.pillar-title {
  font-family: Inter, sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  color: #d0d0e0;
  flex: 1;
  transition: color 0.2s;
}
.pillar-toggle {
  font-size: 1.2rem;
  color: #555;
  transition: transform 0.3s, color 0.2s;
  flex-shrink: 0;
}
.pillar-card.open .pillar-toggle {
  transform: rotate(45deg);
  color: #2ec4b6;
}
.pillar-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.pillar-card.open .pillar-body {
  max-height: 220px;
  padding: 0 1.25rem 1.25rem;
}
.pillar-body p {
  font-family: Inter, sans-serif;
  font-size: 0.855rem;
  color: #8888a0;
  line-height: 1.68;
  margin: 0;
}

/* FAQ section */
.faq-section { border-top: 1px solid #2a2a44; padding-top: 2.5rem; }
.faq-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  color: #f0ede8;
  margin-bottom: 1.25rem;
}
.faq-accordion { display: flex; flex-direction: column; gap: 0.5rem; }
.faq-item {
  border: 1px solid #2a2a44;
  border-radius: 10px;
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item.open { border-color: #2ec4b6; }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: Inter, sans-serif;
  font-size: 0.92rem;
  font-weight: 500;
  color: #d0d0e0;
  text-align: left;
  transition: color 0.2s;
}
.faq-question:hover { color: #2ec4b6; }
.faq-chevron {
  flex-shrink: 0;
  color: #555;
  font-size: 1rem;
  transition: transform 0.3s, color 0.2s;
}
.faq-item.open .faq-chevron { transform: rotate(180deg); color: #2ec4b6; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 1.25rem 1.25rem;
}
.faq-answer p {
  font-family: Inter, sans-serif;
  font-size: 0.855rem;
  color: #8888a0;
  line-height: 1.72;
  margin: 0;
}

/* ─── Responsive additions for Step 4 ─── */
@media (max-width: 768px) {
  .hypothesis-cards { flex-direction: column; border-radius: 14px; }
  .hypothesis-card--old {
    border: 1.5px solid rgba(232,93,4,0.35);
    border-radius: 14px 14px 0 0;
    border-bottom: none;
  }
  .hypothesis-card--new {
    border: 1.5px solid rgba(46,196,182,0.45);
    border-radius: 0 0 14px 14px;
    border-top: none;
  }
  .hyp-divider {
    flex-direction: row;
    align-items: center;
    padding: 0.6rem 1rem;
    min-width: unset;
    border-left: 1.5px solid rgba(232,93,4,0.25);
    border-right: 1.5px solid rgba(232,93,4,0.25);
  }
  .hyp-shift-label { margin-right: 0.5rem; }
  .pillar-grid { grid-template-columns: 1fr; }
  .schematic-title { font-size: 1.6rem; }
  .conclusion-title { font-size: 1.6rem; }
}

/* ============================================================
   FLAIR-AD BRANDING
   ============================================================ */

/* Nav logo */
.nav-logo-name {
  color: var(--clr-microglia);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

/* Hero branding lockup */
.flair-brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 2rem;
  padding: 0.9rem 1.8rem;
  border: 1.5px solid rgba(46, 196, 182, 0.30);
  border-radius: var(--radius-md);
  background: rgba(46, 196, 182, 0.04);
  backdrop-filter: blur(4px);
}

.flair-acronym {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--clr-microglia);
  line-height: 1;
}

.flair-expansion {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.2em 0.55em;
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--clr-text-light);
  text-transform: none;
  line-height: 1.5;
}

.flair-expansion em {
  font-style: normal;
  font-weight: 700;
  color: var(--clr-microglia);
}

/* ============================================================
   SHARE YOUR THOUGHTS SECTION
   ============================================================ */
.share-section {
  background: var(--clr-bg);
  padding: 6rem 2rem;
  border-top: 1px solid var(--clr-border);
}

.share-inner {
  max-width: 760px;
  margin: 0 auto;
}

.share-header {
  text-align: center;
  margin-bottom: 3rem;
}

.share-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-microglia);
  margin-bottom: 0.75rem;
}

.share-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--clr-text);
  margin-bottom: 0.6rem;
}

.share-sub {
  font-size: 1rem;
  color: var(--clr-text-light);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Form blocks */
.share-form {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.share-block {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem 2rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.share-block-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: -0.5rem;
}

.share-prompt-q {
  font-size: 0.97rem;
  font-style: italic;
  color: var(--clr-text-light);
  border-left: 3px solid var(--clr-microglia);
  padding-left: 1rem;
  line-height: 1.6;
}

/* Textarea + inputs */
.share-form textarea,
.share-form input[type="text"] {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--clr-text);
  background: var(--clr-bg);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
  line-height: 1.6;
}

.share-form textarea:focus,
.share-form input[type="text"]:focus {
  outline: none;
  border-color: var(--clr-microglia);
  box-shadow: 0 0 0 3px rgba(46, 196, 182, 0.15);
}

/* Survey questions */
.survey-q {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.survey-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-text);
}

.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.radio-opt {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  padding: 0.4rem 0.85rem;
  border: 1.5px solid var(--clr-border);
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--clr-text-light);
  background: var(--clr-bg);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  user-select: none;
}

.radio-opt:hover {
  border-color: var(--clr-microglia);
  color: var(--clr-text);
}

.radio-opt input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-opt:has(input:checked) {
  border-color: var(--clr-microglia);
  background: rgba(46, 196, 182, 0.12);
  color: var(--clr-text);
  font-weight: 500;
}

/* Star rating */
.star-rating {
  display: flex;
  gap: 0.3rem;
}

.star {
  font-size: 1.8rem;
  color: var(--clr-border);
  cursor: pointer;
  transition: color 0.15s ease, transform 0.15s ease;
  line-height: 1;
  user-select: none;
}

.star--hover,
.star--active {
  color: var(--clr-microglia);
}

.star:hover,
.star--hover { transform: scale(1.15); }

/* Submit button */
.share-submit {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--clr-text);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 0.85rem 2.2rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.share-submit:hover { background: var(--clr-microglia); transform: translateY(-2px); }

.share-submit-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.35);
  border-top-color: #fff;
  border-radius: 50%;
  display: none;
  animation: spin 0.7s linear infinite;
}

.share-submit.loading .share-submit-text { opacity: 0.5; }
.share-submit.loading .share-submit-spinner { display: block; }
.share-submit:disabled { opacity: 0.6; cursor: not-allowed; }

@keyframes spin { to { transform: rotate(360deg); } }

/* Thank-you state */
.share-thankyou {
  text-align: center;
  padding: 3.5rem 2rem;
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.thankyou-check {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(46, 196, 182, 0.12);
  color: var(--clr-microglia);
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  border: 2px solid rgba(46, 196, 182, 0.35);
}

.share-thankyou h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--clr-text);
  margin-bottom: 0.5rem;
}

.share-thankyou p {
  font-size: 0.92rem;
  color: var(--clr-text-light);
}

/* ============================================================
   COMMUNITY FORUM SECTION
   ============================================================ */
.forum-section {
  background: var(--clr-bg-dark);
  padding: 6rem 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.forum-inner {
  max-width: 760px;
  margin: 0 auto;
}

.forum-header {
  text-align: center;
  margin-bottom: 3rem;
}

.forum-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-microglia);
  margin-bottom: 0.75rem;
}

.forum-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--clr-text-inv);
  margin-bottom: 0.6rem;
}

.forum-sub {
  font-size: 1rem;
  color: rgba(240, 237, 232, 0.55);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Composer */
.forum-composer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.forum-input {
  width: 100%;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  color: var(--clr-text-inv);
  background: rgba(255,255,255,0.06);
  border: 1.5px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  padding: 0.7rem 1rem;
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
  line-height: 1.6;
}

.forum-input::placeholder { color: rgba(240,237,232,0.35); }

.forum-input:focus {
  outline: none;
  border-color: var(--clr-microglia);
  box-shadow: 0 0 0 3px rgba(46, 196, 182, 0.15);
}

.forum-input.input-error {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(232, 93, 4, 0.20);
  animation: shake 0.35s ease;
}

@keyframes shake {
  0%,100% { transform: translateX(0); }
  25%      { transform: translateX(-5px); }
  75%      { transform: translateX(5px); }
}

.forum-comment-wrap {
  position: relative;
}

.forum-char-count {
  position: absolute;
  bottom: 0.5rem;
  right: 0.75rem;
  font-size: 0.72rem;
  color: rgba(240,237,232,0.35);
  pointer-events: none;
}

.forum-submit-btn {
  align-self: flex-end;
  background: var(--clr-microglia);
  color: #0f0f14;
  border: none;
  border-radius: 999px;
  padding: 0.65rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
}

.forum-submit-btn:hover { background: #25b0a3; transform: translateY(-1px); }
.forum-submit-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* Feed controls */
.forum-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.forum-count {
  font-size: 0.8rem;
  color: rgba(240,237,232,0.45);
  letter-spacing: 0.02em;
}

.sort-toggle {
  display: flex;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 999px;
  overflow: hidden;
}

.sort-btn {
  background: none;
  border: none;
  padding: 0.4rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  color: rgba(240,237,232,0.45);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.sort-btn:hover { color: var(--clr-text-inv); }

.sort-btn--active {
  background: var(--clr-microglia);
  color: #0f0f14;
  font-weight: 700;
  border-radius: 999px;
}

/* Posts */
.forum-feed {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.forum-loading,
.forum-empty {
  text-align: center;
  color: rgba(240,237,232,0.35);
  font-size: 0.9rem;
  padding: 2rem;
}

.forum-post {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  transition: border-color var(--transition);
}

.forum-post:hover { border-color: rgba(46, 196, 182, 0.25); }

.forum-post-header {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
}

.forum-post-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-microglia);
}

.forum-post-time {
  font-size: 0.75rem;
  color: rgba(240,237,232,0.35);
}

.forum-post-body {
  font-size: 0.92rem;
  color: rgba(240,237,232,0.80);
  line-height: 1.65;
  margin-bottom: 0.85rem;
  word-break: break-word;
}

.forum-post-footer {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Vote buttons */
.vote-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: rgba(240,237,232,0.55);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.vote-btn:hover:not(:disabled) { background: rgba(255,255,255,0.10); color: var(--clr-text-inv); }

.vote-btn--up:hover:not(:disabled)  { border-color: var(--clr-microglia); color: var(--clr-microglia); }
.vote-btn--down:hover:not(:disabled){ border-color: var(--clr-accent);    color: var(--clr-accent); }

.vote-btn.voted,
.vote-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.forum-post-score {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--clr-microglia);
  margin-left: 0.25rem;
}

.forum-post-score--neg { color: var(--clr-accent); }

/* ─── Responsive (share + forum) ─── */
@media (max-width: 600px) {
  .share-block { padding: 1.25rem; }
  .radio-group { gap: 0.35rem; }
  .radio-opt { font-size: 0.78rem; padding: 0.35rem 0.7rem; }
  .flair-brand { padding: 0.7rem 1.2rem; }
  .flair-acronym { font-size: 1.5rem; }
  .forum-controls { flex-direction: column; align-items: flex-start; }
  .share-submit { align-self: stretch; text-align: center; justify-content: center; }
}

/* ─── Footer citation bar ─── */
.footer-cite {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1rem;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  color: rgba(240, 237, 232, 0.40);
  line-height: 1.6;
}
.footer-cite a {
  color: var(--clr-microglia);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--transition);
}
.footer-cite a:hover { opacity: 0.75; }