/* ============================================================
   product.css — Performance Stack product page styles
   Inherits design tokens from theme.css
   ============================================================ */

/* ---- NAV EXTENSIONS (product page adds links) ---- */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--fg-secondary);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link-active {
  color: var(--fg-primary);
}

.nav-cta {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--bg-primary);
  background: var(--accent);
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius);
  transition: opacity 0.2s ease, transform 0.2s ease;
  white-space: nowrap;
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.nav-logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

/* Hamburger — mobile only */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--fg-secondary);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav-mobile-menu {
  display: none;
  flex-direction: column;
  padding: 1rem 1.25rem 1.25rem;
  border-top: 1px solid var(--border);
  background: rgba(10, 10, 12, 0.97);
  gap: 0.75rem;
}

.nav-mobile-menu.open { display: flex; }

.nav-mobile-link {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fg-secondary);
  text-decoration: none;
  padding: 0.5rem 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
}

.nav-mobile-cta {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--bg-primary);
  background: var(--accent);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  text-align: center;
  margin-top: 0.25rem;
}

/* ---- BUTTONS ---- */
.btn-primary {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--bg-primary);
  background: var(--accent);
  padding: 0.85rem 2rem;
  border-radius: var(--radius);
  transition: opacity 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.2);
}

.btn-primary:hover {
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(201, 168, 76, 0.3);
}

.btn-ghost {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--fg-secondary);
  background: transparent;
  padding: 0.85rem 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.btn-ghost:hover {
  border-color: var(--border-accent);
  color: var(--fg-primary);
}

/* ---- PRODUCT HERO ---- */
.prod-hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 9rem 2rem 5rem;
  position: relative;
  background:
    radial-gradient(ellipse 50% 60% at 0% 50%, rgba(201, 168, 76, 0.05) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 100% 20%, rgba(74, 158, 142, 0.04) 0%, transparent 60%),
    var(--bg-primary);
}

.prod-hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.prod-kicker {
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.prod-title {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.0;
  margin-bottom: 1.5rem;
  color: var(--fg-primary);
}

.prod-title-accent {
  color: var(--accent);
}

.prod-subtitle {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--fg-secondary);
  max-width: 520px;
  margin-bottom: 2.5rem;
}

.prod-hero-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.prod-trust {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.prod-trust-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.trust-num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.trust-label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  text-transform: uppercase;
  font-weight: 500;
}

.prod-trust-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
}

/* Stack Visual */
.stack-visual {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.stack-badge {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--accent);
  font-weight: 600;
  padding: 0.85rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(201, 168, 76, 0.04);
}

.stack-items {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.stack-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s ease;
}

.stack-item:last-child { border-bottom: none; }

.stack-item:hover {
  background: rgba(255,255,255,0.02);
  margin: 0 -0.5rem;
  padding-left: 0.5rem;
  padding-right: 0.5rem;
  border-radius: 2px;
}

.stack-item-marker {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.si-gold { background: var(--accent); }
.si-teal { background: var(--accent-secondary); }
.si-purple { background: var(--accent-tertiary); }

.stack-item-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.stack-item-name {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--fg-primary);
}

.stack-item-dose {
  font-size: 0.75rem;
  color: var(--fg-muted);
}

.stack-item-time {
  font-family: var(--font-display);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--accent-dim);
  font-weight: 500;
  background: rgba(201, 168, 76, 0.08);
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
}

.stack-adapt-note {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--fg-muted);
  background: rgba(74, 158, 142, 0.04);
}

.adapt-icon {
  color: var(--accent-secondary);
  font-size: 0.9rem;
}

/* ---- FORMULATION ---- */
.formulation {
  padding: 8rem 2rem;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.formulation-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.formulation-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  color: var(--fg-primary);
}

.formulation-intro {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--fg-secondary);
  max-width: 680px;
  margin-bottom: 3.5rem;
}

.compound-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.compound-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2rem;
  transition: border-color 0.3s ease;
}

.compound-card:hover {
  border-color: var(--border-accent);
}

.compound-card-wide {
  grid-column: span 3;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 1.5rem;
  align-items: start;
}

.compound-card-wide .compound-header { grid-column: 1; }
.compound-card-wide .compound-name { grid-column: 1; }
.compound-card-wide .compound-doses { grid-column: 2; align-self: start; padding-top: 0.5rem; }
.compound-card-wide .compound-mechanism { grid-column: 3; }
.compound-card-wide .compound-timing { grid-column: 4; white-space: nowrap; }

.compound-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.compound-num {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--accent-dim);
  font-weight: 600;
}

.compound-vector {
  font-family: var(--font-display);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  font-weight: 600;
  background: rgba(201, 168, 76, 0.08);
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
}

.compound-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--fg-primary);
  margin-bottom: 0.85rem;
  line-height: 1.3;
}

.compound-name em {
  font-style: normal;
  color: var(--fg-secondary);
  font-weight: 400;
}

.compound-doses {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.dose-pill {
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--accent);
  border: 1px solid var(--border-accent);
  padding: 0.2rem 0.55rem;
  border-radius: 2px;
}

.compound-mechanism {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--fg-secondary);
  margin-bottom: 1rem;
}

.compound-timing {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.timing-label {
  font-family: var(--font-display);
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  color: var(--fg-muted);
  text-transform: uppercase;
  font-weight: 500;
}

.timing-value {
  font-size: 0.8rem;
  color: var(--accent-secondary);
}

/* ---- DOSING PROTOCOL ---- */
.dosing {
  padding: 8rem 2rem;
  border-top: 1px solid var(--border);
}

.dosing-inner {
  max-width: 900px;
  margin: 0 auto;
}

.dosing-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--fg-primary);
}

.dosing-intro {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--fg-secondary);
  margin-bottom: 3.5rem;
}

.dosing-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.timeline-time {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: rgba(201, 168, 76, 0.04);
  border-bottom: 1px solid var(--border);
}

.time-label {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg-primary);
}

.time-tag {
  font-family: var(--font-display);
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  font-weight: 600;
  background: rgba(201, 168, 76, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: 2px;
}

.timeline-items {
  padding: 0.5rem 1.5rem 1rem;
}

.timeline-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.timeline-item:last-child { border-bottom: none; }

.tl-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  margin-top: 5px;
}

.tl-gold { background: var(--accent); }
.tl-teal { background: var(--accent-secondary); }
.tl-purple { background: var(--accent-tertiary); }

.tl-content {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.tl-name {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg-primary);
}

.tl-detail {
  font-size: 0.8rem;
  color: var(--fg-secondary);
  line-height: 1.5;
}

.timeline-connector {
  width: 1px;
  height: 1.5rem;
  background: var(--border);
  margin: 0 auto;
}

.dosing-note {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  background: rgba(74, 158, 142, 0.06);
  border: 1px solid rgba(74, 158, 142, 0.15);
  border-radius: 4px;
  font-size: 0.875rem;
  color: var(--fg-secondary);
  line-height: 1.6;
}

.dosing-note-icon {
  color: var(--accent-secondary);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ---- BIOMARKER SECTION ---- */
.biomarker-section {
  padding: 8rem 2rem;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.biomarker-section-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
}

.biomarker-section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1.25rem;
  color: var(--fg-primary);
}

.biomarker-section-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--fg-secondary);
  margin-bottom: 2.5rem;
}

.integration-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.integration-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.integration-icon {
  color: var(--accent);
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.integration-name {
  display: block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fg-primary);
  margin-bottom: 0.2rem;
}

.integration-desc {
  display: block;
  font-size: 0.82rem;
  color: var(--fg-secondary);
  line-height: 1.5;
}

/* Biomarker Dashboard Mock */
.biomarker-dashboard {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.bd-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(201, 168, 76, 0.03);
}

.bd-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--fg-primary);
  text-transform: uppercase;
}

.bd-period {
  font-family: var(--font-display);
  font-size: 0.65rem;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
}

.bd-metrics {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.bd-metric { display: flex; flex-direction: column; gap: 0.4rem; }

.bd-metric-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.bd-metric-name {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--fg-secondary);
  font-weight: 500;
}

.bd-metric-delta {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
}

.bd-metric-delta.positive { color: var(--accent); }

.bd-bar-track {
  height: 3px;
  background: var(--bg-secondary);
  border-radius: 2px;
  overflow: hidden;
}

.bd-bar-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 1.5s ease;
}

.bd-gold { background: var(--accent); }
.bd-teal { background: var(--accent-secondary); }
.bd-purple { background: var(--accent-tertiary); }

.bd-metric-range {
  font-size: 0.7rem;
  color: var(--fg-muted);
}

.bd-adapt-signal {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--fg-secondary);
  background: rgba(74, 158, 142, 0.04);
}

.bd-adapt-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-secondary);
  flex-shrink: 0;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ---- PRICING ---- */
.pricing {
  padding: 8rem 2rem;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(201, 168, 76, 0.04) 0%, transparent 70%),
    var(--bg-primary);
}

.pricing-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--fg-primary);
}

.pricing-intro {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--fg-secondary);
  margin-bottom: 3.5rem;
}

.pricing-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2.5rem;
  position: relative;
  transition: border-color 0.3s ease;
}

.pricing-card:hover { border-color: var(--border-accent); }

.pricing-card-elite {
  border-color: var(--border-accent);
  background: linear-gradient(160deg, var(--bg-card), rgba(201, 168, 76, 0.04));
}

.pricing-card-badge {
  position: absolute;
  top: -1px;
  right: 1.5rem;
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--bg-primary);
  background: var(--accent);
  padding: 0.25rem 0.75rem;
  border-radius: 0 0 3px 3px;
}

.pricing-card-header {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.plan-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg-secondary);
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin-bottom: 0.75rem;
}

.price-amount {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--fg-primary);
  line-height: 1;
}

.price-period {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--fg-muted);
  font-weight: 400;
}

.plan-tagline {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--fg-secondary);
}

.plan-includes {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.include-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  font-size: 0.875rem;
  color: var(--fg-secondary);
  line-height: 1.4;
}

.include-check {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.plan-cta {
  display: block;
  width: 100%;
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--fg-primary);
  background: transparent;
  border: 1px solid var(--border-accent);
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius);
  transition: background 0.2s ease, color 0.2s ease;
  margin-bottom: 0.75rem;
}

.plan-cta:hover {
  background: rgba(201, 168, 76, 0.08);
}

.plan-cta-elite {
  color: var(--bg-primary);
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.2);
}

.plan-cta-elite:hover {
  opacity: 0.9;
  background: var(--accent);
  box-shadow: 0 6px 28px rgba(201, 168, 76, 0.3);
}

.plan-note {
  font-size: 0.75rem;
  color: var(--fg-muted);
  text-align: center;
}

.pricing-compare {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.compare-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: var(--bg-card);
}

.compare-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  color: var(--fg-muted);
  font-weight: 500;
  flex-shrink: 0;
}

.compare-value {
  font-size: 0.82rem;
  color: var(--fg-secondary);
  text-align: right;
}

/* ---- WAITLIST ---- */
.waitlist {
  padding: 8rem 2rem;
  text-align: center;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(ellipse 50% 40% at 50% 60%, var(--accent-glow) 0%, transparent 70%),
    var(--bg-secondary);
}

.waitlist-inner {
  max-width: 600px;
  margin: 0 auto;
}

.waitlist-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--fg-primary);
}

.waitlist-body {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--fg-secondary);
  margin-bottom: 2.5rem;
}

.waitlist-form { margin-bottom: 1rem; }

.wl-fields {
  display: flex;
  gap: 0;
  max-width: 480px;
  margin: 0 auto;
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  overflow: hidden;
}

.wl-input {
  flex: 1;
  background: var(--bg-card);
  border: none;
  padding: 0.9rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--fg-primary);
  outline: none;
}

.wl-input::placeholder { color: var(--fg-muted); }

.wl-submit {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--accent);
  color: var(--bg-primary);
  border: none;
  padding: 0.9rem 1.5rem;
  cursor: pointer;
  transition: opacity 0.2s ease;
  white-space: nowrap;
}

.wl-submit:hover { opacity: 0.9; }

.wl-success {
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: var(--accent-secondary);
  padding: 1rem;
  background: rgba(74, 158, 142, 0.08);
  border: 1px solid rgba(74, 158, 142, 0.2);
  border-radius: var(--radius);
  max-width: 480px;
  margin: 0 auto;
}

.waitlist-note {
  font-size: 0.75rem;
  color: var(--fg-muted);
}

/* ---- FOOTER EXTENSIONS ---- */
.footer-center {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.footer-link {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--fg-muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.footer-link:hover { color: var(--fg-secondary); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .compound-card-wide {
    grid-column: span 3;
    display: block;
  }
}

@media (max-width: 900px) {
  .compound-grid {
    grid-template-columns: 1fr 1fr;
  }
  .compound-card-wide {
    grid-column: span 2;
  }
  .biomarker-section-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }

  .prod-hero {
    padding: 7rem 1.25rem 4rem;
    min-height: auto;
  }

  .prod-hero-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .prod-title { font-size: 2.8rem; }

  .prod-trust {
    gap: 1.25rem;
  }

  .compound-grid {
    grid-template-columns: 1fr;
  }

  .compound-card-wide {
    grid-column: span 1;
  }

  .pricing-cards {
    grid-template-columns: 1fr;
  }

  .pricing-compare {
    grid-template-columns: 1fr;
  }

  .compare-item {
    flex-direction: column;
    gap: 0.25rem;
  }

  .compare-value { text-align: left; }

  .wl-fields {
    flex-direction: column;
    border-radius: var(--radius);
  }

  .wl-input {
    border-bottom: 1px solid var(--border-accent);
    border-radius: var(--radius) var(--radius) 0 0;
  }

  .wl-submit {
    border-radius: 0 0 var(--radius) var(--radius);
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }

  .footer-center { justify-content: center; }

  .formulation,
  .dosing,
  .biomarker-section,
  .pricing,
  .waitlist {
    padding: 5rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .prod-title { font-size: 2.2rem; }
  .prod-hero-actions { flex-direction: column; align-items: flex-start; }
  .btn-primary, .btn-ghost { width: 100%; text-align: center; }
  .prod-trust { flex-wrap: wrap; gap: 1rem; }
  .prod-trust-divider { display: none; }
}