/* =============================================
   CHRONOSIGHT — styles.css
   AI-Powered Health Risk Intelligence
   ============================================= */

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

:root {
  --blue:        #2563eb;
  --blue-dark:   #1d4ed8;
  --blue-light:  #3b82f6;
  --blue-pale:   #eff6ff;
  --sky:         #0ea5e9;
  --teal:        #14b8a6;
  --purple:      #8b5cf6;
  --pink:        #ec4899;

  --dark:        #0a0a0a;
  --dark-2:      #111827;
  --slate:       #475569;
  --muted:       #64748b;
  --border:      #e2e8f0;
  --light:       #f8fafc;
  --white:       #ffffff;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius:    10px;
  --radius-lg: 18px;
  --radius-xl: 24px;

  --shadow:    0 2px 16px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 32px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 56px rgba(0,0,0,0.14);

  --t: 0.22s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── UTILITIES ── */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 28px;
}

.section {
  padding: 100px 0;
}

.section-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.9rem, 3.5vw, 2.7rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--dark);
  margin-bottom: 18px;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 540px;
  margin-bottom: 52px;
  line-height: 1.7;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--t);
  white-space: nowrap;
  font-family: var(--font);
}
.btn-lg { padding: 14px 30px; font-size: 0.95rem; }

.btn-primary {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.btn-primary:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37,99,235,0.3);
}

.btn-ghost {
  background: rgba(255,255,255,0.1);
  color: var(--white);
  border-color: rgba(255,255,255,0.3);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.55);
  transform: translateY(-1px);
}

.btn-white {
  background: var(--white);
  color: var(--blue);
  border-color: var(--white);
}
.btn-white:hover {
  background: var(--blue-pale);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

/* ── HEADER ── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t), background var(--t), box-shadow var(--t);
}
.header.scrolled {
  border-bottom-color: var(--border);
  background: rgba(255,255,255,0.97);
  box-shadow: var(--shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 28px;
}

.logo-link { display: flex; align-items: center; text-decoration: none; }
.logo-img { height: 64px; width: auto; object-fit: contain; object-position: left; }

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  padding: 8px 14px;
  color: var(--slate);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: 8px;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: color var(--t), background var(--t);
  font-family: var(--font);
}
.nav-item:hover { color: var(--blue); background: var(--blue-pale); }

.nav-cta {
  margin-left: 8px;
  padding: 9px 20px;
  background: var(--blue);
  color: var(--white) !important;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--t);
  border: 2px solid var(--blue);
}
.nav-cta:hover { background: var(--blue-dark); border-color: var(--blue-dark); }

/* Dropdown */
.nav-dropdown { position: relative; }
.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  min-width: 260px;
  padding: 16px 8px 8px; /* top padding bridges the visual gap without a hover-dead-zone */
  z-index: 200;
}
.nav-dropdown:hover .dropdown-menu { display: block; }

.dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  text-decoration: none;
  border-radius: 8px;
  transition: background var(--t);
}
.dropdown-item:hover { background: var(--light); }

.dropdown-icon {
  font-size: 0.6rem;
  color: var(--blue);
  margin-top: 5px;
  flex-shrink: 0;
}
.dropdown-item-title { font-size: 0.88rem; font-weight: 600; color: var(--dark); }
.dropdown-item-desc { font-size: 0.78rem; color: var(--muted); margin-top: 1px; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--t);
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 16px 28px 20px;
  border-top: 1px solid var(--border);
  background: var(--white);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  text-decoration: none;
  color: var(--slate);
  padding: 11px 0;
  font-size: 0.95rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-cta {
  background: var(--blue) !important;
  color: var(--white) !important;
  border-radius: 8px !important;
  padding: 12px 20px !important;
  text-align: center;
  margin-top: 8px;
  border-bottom: none !important;
}

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  padding-top: 66px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #020817 0%, #0a1628 35%, #0f2044 60%, #0d1b3e 100%);
}

canvas#neuralCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.55;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}
.hero-glow-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(37,99,235,0.35) 0%, transparent 70%);
  top: -100px; right: -100px;
  animation: glowPulse 8s ease-in-out infinite;
}
.hero-glow-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(14,165,233,0.25) 0%, transparent 70%);
  bottom: -50px; left: 30%;
  animation: glowPulse 10s ease-in-out infinite reverse;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 40px;
  padding-bottom: 80px;
  padding-left: 60px;
  max-width: 640px;
  margin: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border-radius: 100px;
  background: rgba(37,99,235,0.2);
  border: 1px solid rgba(59,130,246,0.4);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: #93c5fd;
  margin-bottom: 32px;
}

.badge-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: #3b82f6;
  animation: blink 2s ease-in-out infinite;
}
@keyframes blink { 0%,100%{opacity:1;} 50%{opacity:0.3;} }

.hero-headline {
  font-size: clamp(2.8rem, 6vw, 4.8rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero-gradient-text {
  background: linear-gradient(90deg, #60a5fa, #38bdf8, #67e8f9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(0.95rem, 1.8vw, 1.1rem);
  color: rgba(255,255,255,0.7);
  max-width: 520px;
  line-height: 1.75;
  margin-bottom: 40px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 52px; }

.hero-partners { display: flex; flex-direction: column; gap: 10px; }
.partners-label {
  font-size: 0.73rem;
  font-weight: 500;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.partners-logos { display: flex; align-items: center; gap: 24px; }
.partner-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.8;
  transition: opacity var(--t);
}
.partner-logo:hover { opacity: 1; }

/* Floating hero cards */
.hero-float {
  position: absolute;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.hero-float-right {
  right: 6%;
  top: 50%;
  transform: translateY(-50%);
}

.float-card {
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-lg);
  padding: 18px 22px;
  min-width: 220px;
  animation: floatCard 6s ease-in-out infinite;
}
.float-card:nth-child(2) { animation-delay: -3s; }

@keyframes floatCard {
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-8px); }
}

.float-card-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 6px;
}
.float-card-value {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 8px;
  font-family: var(--mono);
}
.float-card-bar {
  height: 4px;
  background: rgba(255,255,255,0.12);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 8px;
}
.float-card-fill {
  height: 100%;
  background: linear-gradient(90deg, #3b82f6, #0ea5e9);
  border-radius: 2px;
  transition: width 1.5s ease;
}
.float-card-sub {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.45);
  font-family: var(--mono);
}
.float-card-trend {
  font-size: 0.75rem;
  color: #86efac;
  margin-top: 4px;
}

/* ── STATS ── */
.stats-section {
  background: var(--white);
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border);
}

.stats-intro {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 52px;
  flex-wrap: wrap;
  text-align: center;
}
.stats-intro-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--slate);
}
.stats-disclaimer {
  font-size: 0.72rem;
  color: var(--muted);
  max-width: 420px;
  font-style: italic;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px 16px;
  border-radius: var(--radius-lg);
  background: var(--light);
  border: 1px solid var(--border);
  transition: box-shadow var(--t);
}
.stat-item:hover { box-shadow: var(--shadow-md); }

.stat-ring {
  position: relative;
  width: 88px; height: 88px;
  margin-bottom: 16px;
}
.stat-ring svg { width: 100%; height: 100%; }

.stat-ring-value {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--dark);
}

.stat-number { font-size: 1.35rem; font-family: var(--mono); }
.stat-unit { font-size: 0.85rem; font-weight: 700; color: var(--blue); }

.stat-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--slate);
  line-height: 1.4;
}

/* ── BENEFITS ── */
.benefits { background: var(--light); }

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.benefit-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--t);
}
.benefit-card:hover {
  border-color: #bfdbfe;
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.benefit-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}
.benefit-icon svg { width: 26px; height: 26px; }

.benefit-icon-1 { background: #eff6ff; color: var(--blue); }
.benefit-icon-2 { background: #f0fdf4; color: #16a34a; }
.benefit-icon-3 { background: #fdf4ff; color: var(--purple); }
.benefit-icon-4 { background: #fff7ed; color: #ea580c; }

.benefit-card h3 {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
  line-height: 1.3;
}
.benefit-card p { font-size: 0.85rem; color: var(--muted); line-height: 1.65; }

/* ── AI SECTION ── */
.ai-section {
  background: var(--white);
  position: relative;
  overflow: hidden;
}
.ai-section::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 60%; height: 100%;
  background: radial-gradient(ellipse at 80% 50%, rgba(37,99,235,0.04) 0%, transparent 70%);
  pointer-events: none;
}

.ai-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.ai-content p {
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 28px;
}

.ai-features { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.ai-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--slate);
}
.ai-feature-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
}

/* UMAP Visualization */
.umap-container {
  background: var(--dark-2);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.06);
}

.umap-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.umap-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: rgba(255,255,255,0.6);
  font-family: var(--mono);
}
.umap-badge {
  padding: 3px 9px;
  border-radius: 100px;
  background: rgba(34,197,94,0.2);
  color: #86efac;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.umap-plot {
  width: 100%;
  height: 300px;
  position: relative;
  overflow: hidden;
  cursor: crosshair;
}

.umap-legend {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.45);
  font-family: var(--mono);
  flex-wrap: wrap;
}
.legend-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  vertical-align: middle;
  margin-right: 4px;
}

/* ── RISK SECTION ── */
.risk-section { background: var(--light); }

.risk-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.risk-chart-container {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.risk-chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.risk-chart-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--slate);
  font-family: var(--mono);
}
.risk-chart-tabs { display: flex; gap: 4px; }
.risk-tab {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--muted);
  font-family: var(--font);
  transition: all var(--t);
}
.risk-tab.active { background: var(--blue-pale); color: var(--blue); }

.risk-curve-svg {
  display: block;
  width: 100%;
  padding: 12px 8px 4px;
}

.risk-path { stroke-dasharray: 600; stroke-dashoffset: 600; animation: drawPath 2s ease forwards; }
#maleCurve { animation-delay: 0.3s; }
#femaleCurve { animation-delay: 0.6s; }
@keyframes drawPath { to { stroke-dashoffset: 0; } }

.risk-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border);
}
.risk-metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 8px;
  border-right: 1px solid var(--border);
}
.risk-metric:last-child { border-right: none; }
.risk-metric-val {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--blue);
  font-family: var(--mono);
}
.risk-metric-label { font-size: 0.68rem; color: var(--muted); font-weight: 500; }

.risk-content p {
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 28px;
}

.risk-features { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.risk-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--slate);
}
.check-icon {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: #dcfce7;
  color: #16a34a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  flex-shrink: 0;
}

/* ── DRUG DISCOVERY ── */
.drug-section {
  background: linear-gradient(135deg, #020817 0%, #0a1628 50%, #0f1f3d 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}
.drug-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(14,165,233,0.12) 0%, transparent 60%);
}

.drug-section .section-label { color: #38bdf8; }
.drug-section .section-title { color: var(--white); }

.drug-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.drug-content p { color: rgba(255,255,255,0.65); line-height: 1.75; margin-bottom: 36px; }

.drug-features { display: flex; flex-direction: column; gap: 24px; }
.drug-feature {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.drug-feature-num {
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--mono);
  color: #38bdf8;
  background: rgba(14,165,233,0.15);
  border: 1px solid rgba(14,165,233,0.3);
  border-radius: 6px;
  padding: 4px 8px;
  flex-shrink: 0;
  margin-top: 2px;
}
.drug-feature strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 5px;
}
.drug-feature p { font-size: 0.85rem; color: rgba(255,255,255,0.55); line-height: 1.6; margin: 0; }

/* DNA Canvas container */
.molecule-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

#dnaCanvas {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(4px);
}

.molecule-overlay {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: 100%;
}
.mol-stat {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.mol-stat-val {
  font-size: 1.4rem;
  font-weight: 800;
  color: #38bdf8;
  font-family: var(--mono);
  margin-bottom: 4px;
}
.mol-stat-label {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.45);
  line-height: 1.4;
}

/* ── PLATFORM ── */
.platform-section { background: var(--white); }

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.platform-card {
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--t);
}
.platform-card:hover {
  border-color: #bfdbfe;
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.platform-card-visual {
  padding: 20px;
  border-bottom: 1px solid var(--border);
}

.pv-model { background: linear-gradient(135deg, #f5f3ff, #ede9fe); }
.pv-rate  { background: linear-gradient(135deg, #f0f9ff, #e0f2fe); }
.pv-risk  { background: linear-gradient(135deg, #eff6ff, #dbeafe); }

.pv-svg { width: 100%; height: 130px; }

.platform-card > *:not(.platform-card-visual) { padding: 0 24px; }
.platform-num {
  font-size: 0.68rem;
  font-weight: 700;
  font-family: var(--mono);
  color: var(--blue);
  letter-spacing: 0.08em;
  padding-top: 20px;
  padding-bottom: 6px;
}
.platform-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}
.platform-card p { font-size: 0.85rem; color: var(--muted); line-height: 1.65; margin-bottom: 20px; }
.platform-link {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
  padding-bottom: 24px;
  transition: gap var(--t);
}
.platform-link:hover { letter-spacing: 0.01em; }

/* ── CASE STUDIES ── */
.case-studies-section { background: var(--light); }

.case-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: start;
}

.case-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  transition: all var(--t);
}
.case-card:hover {
  border-color: #bfdbfe;
  box-shadow: var(--shadow-md);
}

.case-card-featured {
  border-color: #bfdbfe;
  background: linear-gradient(160deg, #eff6ff 0%, var(--white) 60%);
}

.case-tag {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--blue-pale);
  border: 1px solid #bfdbfe;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.04em;
  margin-bottom: 14px;
}

.case-logo-row { margin-bottom: 14px; }
.case-logo { height: 32px; width: auto; object-fit: contain; }

.case-card h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}
.case-title-sub {
  font-size: 0.88rem;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 14px;
}
.case-desc {
  font-size: 0.88rem;
  color: var(--slate);
  line-height: 1.7;
  margin-bottom: 24px;
}

.case-stats {
  display: flex;
  gap: 24px;
  margin-bottom: 28px;
  padding: 16px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.case-stat { text-align: center; }
.cs-val { display: block; font-size: 1.3rem; font-weight: 800; color: var(--blue); font-family: var(--mono); }
.cs-label { font-size: 0.7rem; color: var(--muted); font-weight: 500; }

.case-cards-right { display: flex; flex-direction: column; gap: 20px; }

.case-link {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--blue);
  text-decoration: none;
  margin-top: 12px;
}
.case-link:hover { text-decoration: underline; }

.partner-row { display: flex; gap: 16px; align-items: center; margin: 14px 0; }
.partner-logo-sm { height: 24px; width: auto; object-fit: contain; filter: grayscale(1); opacity: 0.5; transition: all var(--t); }
.partner-logo-sm:hover { filter: none; opacity: 1; }

/* ── CTA BANNER ── */
.cta-banner {
  position: relative;
  background: linear-gradient(135deg, #020817 0%, #0f2044 50%, #0a1628 100%);
  padding: 100px 0;
  overflow: hidden;
  color: var(--white);
}
.cta-banner-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(37,99,235,0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(14,165,233,0.2) 0%, transparent 50%);
}

.cta-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.cta-content h2 {
  font-size: clamp(1.9rem, 3.5vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.cta-content p {
  color: rgba(255,255,255,0.65);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 420px;
}
.cta-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.cta-email {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  font-family: var(--mono);
  transition: color var(--t);
}
.cta-email:hover { color: var(--white); }

.cta-card {
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-xl);
  padding: 36px;
}
.cta-card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.cta-card p { font-size: 0.875rem; color: rgba(255,255,255,0.55); line-height: 1.65; margin-bottom: 24px; }
.cta-card-divider { height: 1px; background: rgba(255,255,255,0.1); margin-bottom: 20px; }
.cta-card-detail {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 10px;
  font-family: var(--mono);
}

/* ── FOOTER ── */
.footer {
  background: #020817;
  padding: 64px 0 0;
  color: rgba(255,255,255,0.55);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 60px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

.footer-brand-mark { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-logo { height: 48px; width: 48px; object-fit: cover; object-position: left center; opacity: 0.95; flex-shrink: 0; }
.footer-wordmark { font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; font-size: 1.35rem; letter-spacing: -0.02em; }
.footer-wordmark-chrono { font-weight: 800; color: #ffffff; }
.footer-wordmark-sight  { font-weight: 300; color: #60a5fa; letter-spacing: 0.02em; }
.footer-tagline { font-size: 0.88rem; color: rgba(255,255,255,0.45); line-height: 1.6; max-width: 320px; }

.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col-title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.3);
  margin-bottom: 4px;
}
.footer-col a {
  text-decoration: none;
  color: rgba(255,255,255,0.5);
  font-size: 0.85rem;
  transition: color var(--t);
}
.footer-col a:hover { color: var(--white); }

.footer-bottom { padding: 18px 0; }
.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.25);
}

/* ── ANIMATIONS ── */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-float { display: none; }
}

@media (max-width: 860px) {
  .ai-inner, .risk-inner, .drug-inner, .cta-inner { grid-template-columns: 1fr; gap: 48px; }
  .case-grid { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav { display: none; }
  .hamburger { display: flex; }
  .benefits-grid { grid-template-columns: 1fr; }
  .section { padding: 72px 0; }
  .footer-bottom-inner { flex-direction: column; gap: 6px; text-align: center; }
  .cta-inner { grid-template-columns: 1fr; }
  #dnaCanvas { width: 280px; height: 340px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}