/* ============================================================
   MODULOR — Style Sheet
   Clinical, premium, credible. Force-plate precision aesthetic.
   ============================================================ */

/* === 1. RESET + BASE === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: 'Barlow', -apple-system, sans-serif;
  color: #ede8e0;
  background: #080c1e;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  cursor: pointer;
  font-family: inherit;
}

/* === 2. LAYOUT === */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 100px 0;
}

.section-dark {
  background: #060b18;
  color: #ede8e0;
}

/* === 3. NAV === */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(8, 12, 30, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  letter-spacing: 0.20em;
  font-size: 15px;
  color: #ede8e0;
}

.logo img {
  height: 30px;
  width: auto;
  object-fit: contain;
  filter: invert(1);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  font-size: 13px;
  font-weight: 500;
  color: #888;
  text-decoration: none;
  transition: color 0.2s ease;
  letter-spacing: 0.01em;
}

.nav-link:hover {
  color: #e0e0e0;
}

.nav-link.active {
  color: #fafafa;
  font-weight: 600;
}

.nav-cta {
  font-size: 13px;
  font-weight: 500;
  padding: 9px 22px;
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 6px;
  transition: background 0.2s ease, transform 0.15s ease;
  letter-spacing: 0.01em;
}

.nav-cta:hover {
  background: rgba(255,255,255,0.18);
  transform: translateY(-1px);
}

/* === 4. HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 24px 80px;
  background: #060b18;
  text-align: center;
}

.hero-content {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Hero logo centerpiece — Modulor Man silhouette (1:2 aspect) */
.hero-logo-wrap {
  position: relative;
  width: 200px;
  height: 360px;
  margin-bottom: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-logo-img {
  width: auto;
  height: 100%;
  object-fit: contain;
  filter: invert(1);
  animation: logo-glow 4s ease-in-out infinite alternate;
  transition: transform 0.4s ease, filter 0.4s ease;
}

.hero-logo-wrap:hover .hero-logo-img {
  transform: scale(1.06);
  filter: invert(1) brightness(1.2);
}

@keyframes logo-glow {
  from { filter: invert(1) drop-shadow(0 0 24px rgba(200,220,240,0.12)) brightness(1.0); }
  to   { filter: invert(1) drop-shadow(0 0 50px rgba(200,220,240,0.30)) brightness(1.08); }
}

/* Hero typography */
.tag {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #666;
  margin-bottom: 20px;
}

.hero h1 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(40px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  color: #fafafa;
}

.subtitle {
  font-size: 17px;
  line-height: 1.65;
  color: #888;
  max-width: 540px;
  margin-bottom: 40px;
}

.hero-ctas {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 64px;
}

/* Hero metrics — 4-column, clean cards, no border-top */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  width: 100%;
  max-width: 720px;
}

.stat {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 20px 16px;
  text-align: center;
  transition: border-color 0.2s ease;
}

.stat:hover {
  border-color: rgba(255,255,255,0.16);
}

.stat-num {
  display: block;
  font-family: 'Space Mono', monospace;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: #ede8e0;
  margin-bottom: 4px;
}

.stat-label {
  display: block;
  font-size: 12px;
  color: #777;
  letter-spacing: 0.01em;
}

/* Hero metrics */
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  width: 100%;
  max-width: 640px;
}

.metric-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 18px 14px;
  text-align: center;
}

.metric-num {
  display: block;
  font-family: 'Space Mono', monospace;
  font-size: 20px;
  font-weight: 700;
  color: #ede8e0;
  margin-bottom: 4px;
}

.metric-label {
  display: block;
  font-size: 11px;
  color: #666;
  letter-spacing: 0.01em;
}

/* === 5. BUTTONS === */
.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 15px;
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  font-family: inherit;
  letter-spacing: 0.005em;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-primary {
  background: #c84030;
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: #a80d26;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: #e0e0e0;
  border: 1.5px solid rgba(255,255,255,0.2);
}

.btn-secondary:hover:not(:disabled) {
  border-color: rgba(255,255,255,0.5);
}

/* === 6. SECTION HEADERS === */
.section-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #c84030;
  margin-bottom: 16px;
}

.section h2 {
  font-family: 'Barlow Condensed', sans-serif;
  font-size: clamp(32px, 4vw, 52px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 48px;
  max-width: 680px;
}

/* === 7. TWO-COL LAYOUT === */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.col p {
  color: #999;
  margin-bottom: 16px;
  font-size: 16px;
  line-height: 1.65;
}

/* === WHAT THIS IS NOT === */
.not-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.not-item {
  padding: 28px 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
}

.not-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: #e8e8e8;
  margin-bottom: 10px;
}

.not-item p {
  font-size: 15px;
  color: #888;
  line-height: 1.65;
}

/* === WHY IT MATTERS === */
.value-list {
  max-width: 760px;
  margin: 0 auto;
}

.value-item {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: flex-start;
}

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

.value-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: #e0e0e0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  margin-top: 2px;
}

.value-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: #e8e8e8;
  margin-bottom: 8px;
}

.value-body p {
  font-size: 15px;
  color: #888;
  line-height: 1.65;
}

/* === MACHINE BREAKDOWN === */
.machine-breakdown {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.machine-col {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.machine-component h3 {
  font-size: 17px;
  font-weight: 600;
  color: #e8e8e8;
  margin-bottom: 8px;
}

.machine-component p {
  font-size: 15px;
  color: #888;
  line-height: 1.65;
}

.safety-list {
  list-style: none;
  padding: 0;
  margin: 10px 0 0 0;
}

.safety-list li {
  font-size: 14px;
  color: #888;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  padding-left: 16px;
  position: relative;
}

.safety-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ef4444;
}

.machine-summary {
  margin-top: 40px;
  padding: 24px 28px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
}

.machine-summary p {
  font-size: 14px;
  color: #888;
  line-height: 1.65;
}

/* === SCHEDULE GRID === */
.schedule-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.schedule-block {
  padding: 28px 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
}

.schedule-block-highlight {
  grid-column: 1 / -1;
  border-color: rgba(200,16,46,0.15);
  background: rgba(74,222,128,0.03);
}

.schedule-time {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #c84030;
  margin-bottom: 12px;
}

.schedule-block h3 {
  font-size: 18px;
  font-weight: 600;
  color: #fafafa;
  margin-bottom: 10px;
}

.schedule-block p {
  font-size: 15px;
  color: #999;
  line-height: 1.65;
}

.schedule-params {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.schedule-quote {
  font-style: italic;
  color: #c84030;
  font-size: 16px;
  font-weight: 500;
  margin: 12px 0;
}

/* === PROBLEMS LIST === */
.problems-list {
  max-width: 760px;
  margin: 0 auto;
}

.problem-item {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: flex-start;
}

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

.problem-num {
  flex-shrink: 0;
  font-size: 32px;
  font-weight: 700;
  color: rgba(255,255,255,0.06);
  line-height: 1;
  width: 44px;
  text-align: right;
}

.problem-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: #fafafa;
  margin-bottom: 8px;
}

.problem-body p {
  font-size: 15px;
  color: #999;
  line-height: 1.65;
}

/* === WHO BENEFITS === */
.benefit-tiers {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.benefit-tier {
  padding: 28px 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
}

.benefit-priority {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 14px;
}

.benefit-priority.high {
  color: #4ade80;
  background: rgba(74,222,128,0.08);
  border: 1px solid rgba(74,222,128,0.15);
}

.benefit-priority.med {
  color: #facc15;
  background: rgba(250,204,21,0.08);
  border: 1px solid rgba(250,204,21,0.15);
}

.benefit-tier h3 {
  font-size: 18px;
  font-weight: 600;
  color: #e8e8e8;
  margin-bottom: 8px;
}

.benefit-tier p {
  font-size: 15px;
  color: #888;
  line-height: 1.65;
}

/* === FAQ ACCORDION === */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

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

.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  background: none;
  border: none;
  color: #e8e8e8;
  font-size: 17px;
  font-weight: 600;
  font-family: inherit;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s;
  gap: 16px;
}

.faq-q:hover {
  color: #fff;
}

.faq-icon {
  flex-shrink: 0;
  color: #666;
  transition: transform 0.3s ease, color 0.2s;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
  color: #e0e0e0;
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 0 0 0;
}

.faq-item.open .faq-a {
  max-height: 300px;
  padding: 0 0 24px 0;
}

.faq-a p {
  font-size: 15px;
  color: #888;
  line-height: 1.65;
}

/* === PURCHASE TRIGGERS === */
.buy-list {
  max-width: 680px;
  margin: 0 auto;
}

.buy-item {
  display: flex;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: flex-start;
}

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

.buy-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  color: #e0e0e0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
}

.buy-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: #e8e8e8;
  margin-bottom: 4px;
}

.buy-body p {
  font-size: 15px;
  color: #888;
  line-height: 1.5;
}

/* === 8. PROTOCOL STEPS — 3x2 grid === */
/* Section subtitle */
.section-sub {
  font-size: 17px;
  color: #777;
  max-width: 680px;
  margin: -16px auto 48px;
  line-height: 1.65;
  text-align: center;
}

/* Protocol mode cards */
.protocol-modes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 16px;
}

.protocol-mode {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  padding: 32px 28px;
  transition: border-color 0.3s, background 0.3s;
}

.protocol-mode:hover {
  border-color: rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.06);
}

.mode-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 20px;
}

.mode-icon svg {
  width: 100%;
  height: 100%;
}

.protocol-mode h3 {
  font-size: 18px;
  font-weight: 600;
  color: #fafafa;
  margin-bottom: 6px;
}

.mode-context {
  font-size: 13px;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.protocol-mode p {
  font-size: 15px;
  color: #999;
  line-height: 1.65;
}

.mode-params {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.mode-params span {
  font-size: 12px;
  color: #777;
  background: rgba(255,255,255,0.05);
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.06);
}

/* Session flow (8 steps) */
.session-steps {
  max-width: 760px;
  margin: 0 auto;
}

.session-step {
  display: flex;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: flex-start;
}

.session-step:last-child {
  border-bottom: none;
}

.session-step .step-num {
  font-size: 36px;
  font-weight: 700;
  color: rgba(255,255,255,0.08);
  line-height: 1;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  width: 52px;
  text-align: right;
}

.step-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: #e8e8e8;
  margin-bottom: 8px;
}

.step-body p {
  font-size: 15px;
  color: #888;
  line-height: 1.65;
}

/* === 9. INTERACTIVE DEMO === */
.demo-intro {
  font-size: 17px;
  color: #888;
  max-width: 520px;
  margin-bottom: 48px;
  line-height: 1.65;
}

.demo-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

/* Machine visual — sticky left panel */
.machine-visual {
  position: sticky;
  top: 100px;
}

.machine-svg {
  width: 100%;
  max-width: 460px;
  height: auto;
}

/* Cable / cuff / load-cell transitions (clinical precision) */
.machine-svg .cable {
  transition: opacity 0.6s ease, stroke 0.6s ease, stroke-width 0.4s ease;
}

.machine-svg .cuff {
  transition: stroke 0.4s ease, fill 0.4s ease;
}

.machine-svg .load-cell {
  transition: stroke 0.4s ease, fill 0.4s ease, opacity 0.3s ease;
}

.machine-svg .motor {
  transition: fill 0.6s ease;
}

.machine-svg .limb {
  transition: all 0.3s ease;
}

.machine-svg .camera-lens {
  transition: stroke 0.4s ease;
}

/* Demo panel */
.demo-panel {
  min-height: 460px;
  display: flex;
  flex-direction: column;
}

/* Steps indicator — dots and connecting lines */
.demo-steps-indicator {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 32px;
}

.demo-step-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  border: 2px solid rgba(255,255,255,0.1);
  cursor: pointer;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.demo-step-dot.active {
  background: #fafafa;
  border-color: #fafafa;
}

.demo-step-dot.current {
  border-color: #fafafa;
  background: #080c1e;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.12);
}

.demo-step-line {
  flex: 1;
  height: 2px;
  background: rgba(255,255,255,0.1);
  margin: 0 4px;
}

/* Step content panels with fade-in */
.demo-step-content {
  display: none;
  animation: fadeInUp 0.4s ease;
}

.demo-step-content.active {
  display: block;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Step badge */
.demo-step-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  background: rgba(255,255,255,0.1);
  color: #e0e0e0;
  border-radius: 4px;
  margin-bottom: 16px;
}

.demo-step-content h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.demo-step-content > p {
  font-size: 15px;
  color: #888;
  line-height: 1.65;
  margin-bottom: 24px;
}

/* Data grid — 3-column metric cards */
.demo-data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.demo-datum {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 14px 16px;
  transition: border-color 0.2s ease;
}

.demo-datum:hover {
  border-color: rgba(255,255,255,0.16);
}

.datum-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #999;
  margin-bottom: 4px;
}

.datum-val {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #e8e8e8;
}

/* Force / ROM gauges */
.force-gauge {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 0;
}

.gauge-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #888;
  margin-bottom: 10px;
}

.gauge-track {
  height: 10px;
  background: rgba(255,255,255,0.08);
  border-radius: 5px;
  position: relative;
  overflow: visible;
}

.gauge-fill {
  height: 100%;
  background: linear-gradient(90deg, #4ade80, #22c55e);
  border-radius: 5px;
  transition: width 0.15s ease;
}

.gauge-fill-rom {
  background: linear-gradient(90deg, #fbbf24, #facc15);
}

/* Red line at 85% — force safety cap */
.gauge-limit {
  position: absolute;
  top: -4px;
  width: 3px;
  height: 18px;
  background: #ef4444;
  border-radius: 2px;
}

/* Green line — target indicator */
.gauge-target {
  position: absolute;
  top: -4px;
  width: 3px;
  height: 18px;
  background: #4ade80;
  border-radius: 2px;
}

.gauge-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 10px;
  color: #999;
}

.gauge-cap {
  color: #ef4444;
  font-weight: 600;
}

/* Session chart */
.session-chart {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 20px;
  margin-top: 16px;
}

.chart-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #888;
  margin-bottom: 16px;
}

.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 100px;
}

.chart-bar-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
}

.chart-bar {
  width: 100%;
  background: linear-gradient(180deg, #4ade80, #22c55e);
  border-radius: 3px 3px 0 0;
  min-height: 4px;
  transition: height 0.6s ease;
}

.chart-bar-wrap span {
  font-size: 10px;
  color: #888;
  margin-top: 6px;
}

.chart-bar-current {
  color: #22c55e !important;
  font-weight: 700;
}

/* Demo nav buttons */
.demo-nav {
  display: flex;
  gap: 12px;
  margin-top: auto;
  padding-top: 24px;
}

.demo-btn {
  flex: 1;
  text-align: center;
}

/* Demo Tabs */
.demo-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
}

.demo-tab {
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  border: 1.5px solid rgba(255,255,255,0.1);
  background: transparent;
  color: #888;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.demo-tab.active {
  background: rgba(255,255,255,0.1);
  color: #fafafa;
  border-color: rgba(255,255,255,0.2);
}

.demo-tab:hover:not(.active) {
  border-color: rgba(255,255,255,0.3);
  color: #e0e0e0;
}

.demo-content {
  display: none;
}

.demo-content.active {
  display: block;
}

/* Patent Claims */
.patent-claims {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.patent-claim {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 16px;
}

.claim-num {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  background: rgba(255,255,255,0.1);
  color: #e0e0e0;
  border-radius: 3px;
  margin-bottom: 8px;
}

.patent-claim p {
  font-size: 13px;
  color: #888;
  line-height: 1.6;
  margin: 0;
}

/* Use Cases */
.use-cases {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.use-case {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  padding: 16px;
}

.use-case h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}

.use-case p {
  font-size: 12px;
  color: #888;
  line-height: 1.5;
  margin: 0;
}

/* Muscle highlight transition */
.muscle-highlight {
  transition: fill 0.4s ease;
}

/* Flag / alert styles — asymmetry warnings */
.flag-alert {
  background: rgba(239, 68, 68, 0.06);
  border: 1px solid rgba(239, 68, 68, 0.25);
  border-radius: 8px;
  padding: 16px;
  margin-top: 12px;
  color: #e0e0e0;
}

.flag-alert strong {
  color: #ef4444;
  font-weight: 600;
}

.flag-alert p {
  font-size: 14px;
  line-height: 1.55;
  color: #888;
  margin-top: 6px;
}

/* === 10. METRICS GRID — 6 cards, 3x2 === */
.advantages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.advantage {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 32px 28px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.advantage:hover {
  border-color: rgba(255,255,255,0.14);
}

.advantage-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 18px;
}

.advantage h3 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #e8e8e8;
}

.advantage p {
  font-size: 15px;
  color: #888;
  line-height: 1.65;
}

/* === TRAINER QUESTIONS === */
.trainer-questions {
  max-width: 780px;
  margin: 0 auto;
}

.trainer-q {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  align-items: flex-start;
}

.trainer-q:last-child {
  border-bottom: none;
}

.q-mark {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: #bbb;
  margin-top: 2px;
}

.q-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: #e8e8e8;
  margin-bottom: 8px;
}

.q-body p {
  font-size: 15px;
  color: #888;
  line-height: 1.65;
}

/* === SESSION REPORT MOCK === */
.report-mock {
  background: #090d1e;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  overflow: hidden;
  max-width: 900px;
  margin: 0 auto;
}

.report-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 28px;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  flex-wrap: wrap;
  gap: 12px;
}

.report-name {
  font-size: 18px;
  font-weight: 600;
  color: #fafafa;
}

.report-meta {
  font-size: 13px;
  color: #777;
  display: block;
  margin-top: 2px;
}

.report-date {
  font-size: 13px;
  color: #555;
}

.report-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(255,255,255,0.04);
}

.report-item {
  padding: 20px 28px;
  background: #090d1e;
}

.report-item-wide {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.report-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #555;
  margin-bottom: 6px;
}

.report-value {
  display: block;
  font-size: 15px;
  font-weight: 500;
  color: #ccc;
  margin-bottom: 4px;
  line-height: 1.5;
}

.report-value.green { color: #4ade80; }
.report-value.yellow { color: #facc15; }
.report-value.red { color: #ef4444; }
.report-value.neutral { color: #ccc; font-weight: 400; font-size: 14px; line-height: 1.6; }

.report-note {
  font-size: 12px;
  color: #666;
  line-height: 1.5;
}

.report-readiness {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 28px;
  background: rgba(74,222,128,0.04);
  border-top: 1px solid rgba(255,255,255,0.06);
  flex-wrap: wrap;
}

.readiness-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #777;
}

.readiness-status {
  font-size: 14px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 4px;
}

.readiness-status.green {
  color: #4ade80;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.2);
}

.readiness-status.yellow {
  color: #facc15;
  background: rgba(250,204,21,0.1);
  border: 1px solid rgba(250,204,21,0.2);
}

.readiness-status.red {
  color: #ef4444;
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.2);
}

.readiness-detail {
  font-size: 13px;
  color: #666;
}

/* === PROTOCOL TIERS === */
.protocol-tiers {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.tier-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #c84030;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(200,16,46,0.2);
}

.tier-future .tier-label {
  color: #666;
  border-bottom-color: rgba(255,255,255,0.08);
}

.tier-items {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.tier-item {
  padding: 24px 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
}

.tier-future .tier-item {
  opacity: 0.55;
  border-style: dashed;
}

.tier-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: #e8e8e8;
  margin-bottom: 8px;
}

.tier-item p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

.tier-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.tier-tags span {
  font-size: 11px;
  color: #777;
  background: rgba(255,255,255,0.04);
  padding: 3px 8px;
  border-radius: 4px;
}

.scope-note {
  margin-top: 40px;
  padding: 24px 28px;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  font-size: 14px;
  color: #888;
  line-height: 1.65;
}

.scope-note strong {
  color: #ccc;
}

/* === 11. PROTOCOL LIBRARY — comparison table (dark section) === */
.comparison-table {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

th, td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

th {
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #666;
}

td {
  color: #999;
}

.highlight {
  color: #fff !important;
  font-weight: 500;
}

th.highlight {
  color: #fff !important;
}

.table-note {
  margin-top: 16px;
  font-size: 13px;
  color: #555;
}

/* === 12. STAFF / DASHBOARD — specs grid (feature cards) === */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.spec {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 28px 24px;
  transition: border-color 0.2s ease;
}

.spec:hover {
  border-color: rgba(255,255,255,0.14);
}

.spec h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: #e8e8e8;
}

.spec p {
  font-size: 14px;
  color: #888;
  line-height: 1.65;
}

/* === 13. WAITLIST / CTA SECTION === */
.section-cta {
  background: #060b18;
  color: #ede8e0;
  text-align: center;
  padding: 100px 0;
}

.section-cta h2 {
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.cta-sub {
  font-size: 17px;
  color: #888;
  max-width: 480px;
  margin: 0 auto 40px;
  line-height: 1.6;
}

.waitlist-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  max-width: 440px;
  margin: 0 auto;
}

.waitlist-form input {
  flex: 1;
  padding: 14px 18px;
  font-size: 15px;
  border: 1.5px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  background: rgba(255,255,255,0.04);
  color: #fff;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s ease;
}

.waitlist-form input:focus {
  border-color: #fff;
}

.waitlist-form input::placeholder {
  color: #555;
}

.waitlist-form .btn-primary {
  white-space: nowrap;
  background: #c84030;
  color: #fff;
}

.waitlist-form .btn-primary:hover {
  background: #a80d26;
}

.form-note {
  font-size: 13px;
  color: #555;
  margin-top: 16px;
  text-align: center;
}

/* === 14. FOOTER === */
footer {
  padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  background: #060b18;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'Barlow Condensed', sans-serif;
  font-weight: 700;
  letter-spacing: 0.20em;
  font-size: 12px;
  color: #888;
  letter-spacing: 0.12em;
  font-size: 12px;
  color: #888;
}

.footer-logo img {
  height: 24px;
  width: auto;
  object-fit: contain;
  filter: invert(1);
}

.copyright {
  font-size: 13px;
  color: #999;
}

/* === 15. RESPONSIVE === */

/* Tablet — 768px */
@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  /* Nav — tighten links so all 5 fit on phones */
  .nav-inner {
    padding: 12px 16px;
    gap: 8px;
  }
  .logo {
    font-size: 12px;
    gap: 6px;
  }
  .logo img {
    height: 26px;
    width: auto;
  }
  .nav-links {
    gap: 10px;
  }
  .nav-link {
    font-size: 12px;
  }
  .nav-cta {
    padding: 7px 14px;
    font-size: 12px;
  }

  /* Hero metrics — 2-col instead of 4-col on phones */
  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    max-width: 420px;
  }
  .metric-num {
    font-size: 18px;
  }
  .metric-label {
    font-size: 10px;
  }

  .hero {
    padding: 100px 24px 60px;
  }

  .hero-logo-wrap {
    width: 160px;
    height: 300px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .two-col {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .not-grid {
    grid-template-columns: 1fr;
  }

  .machine-breakdown {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .schedule-block-highlight {
    grid-column: auto;
  }

  .benefit-tiers {
    grid-template-columns: 1fr;
  }

  .protocol-modes {
    grid-template-columns: 1fr 1fr;
  }

  .advantages {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .specs-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .comparison-table {
    margin: 0 -24px;
    padding: 0 24px;
  }

  .waitlist-form {
    flex-direction: column;
  }

  /* Demo — single column */
  .demo-wrap {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .machine-visual {
    position: static;
  }

  .machine-svg {
    max-width: 360px;
    margin: 0 auto;
    display: block;
  }

  .demo-data-grid {
    grid-template-columns: 1fr;
  }

  .demo-panel {
    min-height: auto;
  }

  /* Protocol library table */
  table {
    font-size: 14px;
  }

  th, td {
    padding: 12px 14px;
  }
}

/* Mobile — 480px */
@media (max-width: 480px) {
  /* Very-narrow nav: hide MODULOR wordmark, keep logo mark only */
  .logo span {
    display: none;
  }
  .nav-inner {
    padding: 10px 14px;
  }
  .nav-links {
    gap: 8px;
  }
  .nav-link {
    font-size: 11.5px;
    letter-spacing: 0;
  }
  .nav-cta {
    padding: 6px 12px;
    font-size: 11.5px;
  }

  /* Hero metrics full-width cards */
  .hero-metrics {
    max-width: 360px;
  }
  .metric-num {
    font-size: 16px;
  }

  .hero {
    padding: 90px 20px 48px;
    min-height: auto;
  }

  .hero h1 {
    font-size: clamp(28px, 8vw, 40px);
  }

  .subtitle {
    font-size: 15px;
  }

  .hero-logo-wrap {
    width: 130px;
    height: 250px;
    margin-bottom: 32px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat {
    padding: 16px 12px;
  }

  .stat-num {
    font-size: 22px;
  }

  .protocol-modes {
    grid-template-columns: 1fr;
  }

  .session-step {
    gap: 16px;
  }

  .session-step .step-num {
    font-size: 28px;
    width: 36px;
  }

  .trainer-q {
    gap: 14px;
  }

  .q-mark {
    width: 32px;
    height: 32px;
    font-size: 16px;
  }

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

  .report-header {
    flex-direction: column;
    gap: 8px;
  }

  .report-readiness {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .tier-items {
    grid-template-columns: 1fr;
  }

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

  .section h2 {
    font-size: clamp(24px, 6vw, 36px);
    margin-bottom: 32px;
  }

  .hero-ctas {
    margin-bottom: 40px;
  }

  .btn {
    padding: 12px 22px;
    font-size: 14px;
  }

  .demo-step-content h3 {
    font-size: 20px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}


/* =============================================================
   IMMERSIVE DEMO SECTION
   View tabs, SVG container, detail grid, session walkthrough,
   live data, force gauge, and responsive breakpoints.
   ============================================================= */

/* --- View Tabs --- */
.view-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.view-tab {
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  background: rgba(255,255,255,0.05);
  color: #e0e0e0;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.view-tab:hover:not(.active) {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.14);
  color: #fff;
}

.view-tab.active {
  background: rgba(255,255,255,0.10);
  color: #fafafa;
  border-color: rgba(255,255,255,0.14);
  border-bottom: 2px solid #c84030;
}

/* --- View Panels --- */
.view-panel {
  display: none;
  animation: viewFadeIn 0.35s ease;
}

.view-panel.active {
  display: block;
}

@keyframes viewFadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Main Demo Container --- */
.demo-immersive {
  max-width: 960px;
  margin: 0 auto;
}

/* --- SVG Container --- */
.demo-svg-wrap {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 5 / 4;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  overflow: hidden;
}

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

/* --- Detail Grid (2x2) --- */
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}

.detail-panel {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  padding: 20px 18px;
  transition: border-color 0.2s ease;
}

.detail-panel:hover {
  border-color: rgba(255,255,255,0.14);
}

.detail-panel .detail-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #666;
  margin-bottom: 6px;
}

.detail-panel .detail-value {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #e8e8e8;
  line-height: 1.5;
}

.detail-panel p {
  font-size: 13px;
  color: #888;
  line-height: 1.55;
  margin-top: 6px;
}

/* --- Session Layout (60/40 split) --- */
.session-layout {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 32px;
  align-items: start;
}

.session-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.session-panel h3 {
  font-size: 20px;
  font-weight: 700;
  color: #e8e8e8;
  margin-bottom: 4px;
  letter-spacing: -0.01em;
}

.session-panel > p {
  font-size: 14px;
  color: #888;
  line-height: 1.65;
}

/* --- Session Step Dots --- */
.session-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}

.session-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 2px solid rgba(255,255,255,0.08);
  cursor: pointer;
  transition: all 0.25s ease;
  flex-shrink: 0;
}

.session-dot.active {
  background: #e0e0e0;
  border-color: #e0e0e0;
}

.session-dot.current {
  background: transparent;
  border-color: #fafafa;
  box-shadow: 0 0 0 3px rgba(255,255,255,0.10);
}

/* --- Session Step Content --- */
.session-step-content {
  display: none;
  animation: viewFadeIn 0.35s ease;
}

.session-step-content.active {
  display: block;
}

/* --- Live Data Grid (3-column) --- */
.live-data-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.live-data-grid .data-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  padding: 12px 14px;
  transition: border-color 0.2s ease;
}

.live-data-grid .data-card:hover {
  border-color: rgba(255,255,255,0.14);
}

.live-data-grid .data-label {
  display: block;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #666;
  margin-bottom: 4px;
}

.live-data-grid .data-value {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: #e8e8e8;
}

/* --- Session Nav --- */
.session-nav {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.session-nav .btn {
  flex: 1;
  text-align: center;
}

/* --- Session / Force Gauge --- */
.session-gauge {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  padding: 14px 16px;
}

.session-gauge .gauge-track {
  height: 8px;
  background: rgba(255,255,255,0.08);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.session-gauge .gauge-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #4ade80, #22c55e);
  border-radius: 4px;
  transition: width 0.15s ease;
}

.session-gauge .gauge-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #888;
  margin-bottom: 8px;
}

.session-gauge .gauge-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 5px;
  font-size: 10px;
  color: #666;
}

/* --- Pulsing indicator for response monitoring --- */
@keyframes pulseGlow {
  0%, 100% { opacity: 0.6; }
  50%      { opacity: 1; }
}

.pulse-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  animation: pulseGlow 1.4s ease-in-out infinite;
  margin-right: 6px;
  vertical-align: middle;
}

.pulse-indicator.warning {
  background: #facc15;
}

.pulse-indicator.danger {
  background: #ef4444;
}

/* --- Responsive: 768px --- */
@media (max-width: 768px) {
  .session-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .view-tabs {
    gap: 6px;
  }

  .view-tab {
    padding: 8px 16px;
    font-size: 13px;
  }

  .live-data-grid {
    grid-template-columns: 1fr 1fr;
  }

  .demo-svg-wrap {
    aspect-ratio: 4 / 3;
  }
}

/* --- Responsive: 480px --- */
@media (max-width: 480px) {
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .live-data-grid {
    grid-template-columns: 1fr;
  }

  .view-tab {
    padding: 8px 12px;
    font-size: 12px;
  }

  .session-dots {
    gap: 4px;
  }

  .session-dot {
    width: 10px;
    height: 10px;
  }

  .session-nav {
    flex-direction: column;
  }

  .demo-svg-wrap {
    aspect-ratio: 1 / 1;
  }
}

/* =============================================================
   IMAGE-BASED DEMO
   ============================================================= */

.demo-img-wrap {
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.06);
  position: relative;
}

.demo-img-wrap img {
  width: 100%;
  height: auto;
  display: block;
}

.demo-img-wrap.detail-img {
  border-radius: 8px;
  margin-bottom: 12px;
}

.demo-img-caption {
  margin-top: 16px;
}

.caption-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.caption-specs span {
  font-size: 12px;
  font-weight: 600;
  color: #888;
  padding: 6px 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 20px;
  letter-spacing: 0.02em;
}

/* Session image overlay */
.session-img {
  position: relative;
}

.session-img-overlay {
  position: absolute;
  top: 16px;
  left: 16px;
}

.session-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #4ade80;
  padding: 6px 14px;
  background: rgba(18, 21, 26, 0.85);
  border: 1px solid rgba(74, 222, 128, 0.3);
  border-radius: 6px;
  backdrop-filter: blur(8px);
}

.session-live-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  animation: pulseGlow 1.4s ease-in-out infinite;
}

/* Session filmstrip playback controls */
.session-playback {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: linear-gradient(transparent, rgba(12, 15, 20, 0.92));
}

.playback-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.08);
  color: #e0e0e0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.playback-btn:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.25);
  color: #fff;
}

.playback-btn.playing {
  color: #4ade80;
  border-color: rgba(74,222,128,0.3);
  background: rgba(74,222,128,0.1);
}

.playback-progress {
  flex: 1;
  height: 4px;
  background: rgba(255,255,255,0.1);
  border-radius: 2px;
  overflow: hidden;
}

.playback-bar {
  height: 100%;
  width: 10%;
  background: #4ade80;
  border-radius: 2px;
  transition: width 0.3s ease;
}

.playback-label {
  font-size: 11px;
  color: #888;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 768px) {
  .caption-specs {
    gap: 6px;
  }
  .caption-specs span {
    font-size: 11px;
    padding: 5px 10px;
  }
  .session-playback {
    padding: 8px 12px;
    gap: 8px;
  }
  .playback-btn {
    width: 30px;
    height: 30px;
  }
}

/* ============================================================
   MODULOR DIAGRAM & CORBUSIER TEXTURE — brand imagery system
   ============================================================ */

/* Hero split layout */
.hero-split {
  display: grid !important;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  text-align: left !important;
}

.hero-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-text .hero-ctas {
  justify-content: flex-start;
}

.hero-text .hero-metrics {
  max-width: 100%;
}

/* Le Corbusier sketch — hero background texture */
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('modulor-man-le-corbusier.webp');
  background-size: cover;
  background-position: center 30%;
  opacity: 0.045;
  filter: grayscale(1) contrast(1.2);
  pointer-events: none;
  z-index: 0;
}

.hero {
  position: relative;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
}

/* Diagram exhibit — hero right panel */
.hero-exhibit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.hero-exhibit-img {
  width: 100%;
  max-width: 420px;
  height: auto;
  border-radius: 4px;
  opacity: 0.92;
  box-shadow: 0 32px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.05);
}

.hero-exhibit-caption {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #4a5878;
  text-align: center;
}

/* Corbusier sketch strip — section divider */
.corbusier-strip {
  position: relative;
  height: 200px;
  overflow: hidden;
  background: #040710;
}

.corbusier-strip-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.12;
  filter: grayscale(1) contrast(1.4);
}

.corbusier-strip-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    #040710 0%,
    transparent 20%,
    transparent 80%,
    #040710 100%
  );
}

/* Proportion rule — a subtle horizontal measurement bar */
.proportion-rule {
  height: 2px;
  background: linear-gradient(to right, transparent, rgba(200,64,48,0.4) 30%, rgba(36,88,200,0.4) 70%, transparent);
  margin: 0;
}

/* Mobile — hero split collapses */
@media (max-width: 860px) {
  .hero-split {
    grid-template-columns: 1fr !important;
    text-align: center !important;
    gap: 40px;
  }
  .hero-text {
    align-items: center;
  }
  .hero-text .hero-ctas {
    justify-content: center;
  }
  .hero-exhibit {
    display: none;
  }
}