@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800;900&family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200&display=swap');

:root {
  --color-bg: #0A0D12;
  --color-surface: #121620;
  --color-surface-hover: #191E2B;
  --color-crimson: #E11D48;
  --color-crimson-light: #FDA4AF;
  --color-crimson-glow: rgba(225, 29, 72, 0.3);
  --color-cyan: #06B6D4;
  --color-text-main: #F8FAFC;
  --color-text-muted: #94A3B8;
  --color-border: rgba(255, 255, 255, 0.08);
  
  --font-main: 'Plus Jakarta Sans', system-ui, sans-serif;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --radius-full: 9999px;
  
  --shadow-dark: 0 10px 40px rgba(0,0,0,0.7);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
}

.material-symbols-outlined {
  font-family: 'Material Symbols Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  display: inline-block;
  vertical-align: middle;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 13, 18, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  font-size: 1.35rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.01em;
}

.logo-heart {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--color-crimson);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--color-crimson-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--color-crimson);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.85rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.25s ease;
}

.btn-crimson {
  background: linear-gradient(135deg, var(--color-crimson) 0%, #BE123C 100%);
  color: white;
  box-shadow: 0 4px 20px var(--color-crimson-glow);
}

.btn-crimson:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(225, 29, 72, 0.5);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-crimson);
  color: var(--color-crimson);
  background: rgba(225, 29, 72, 0.08);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  cursor: pointer;
}

/* =========================================
   LONGEVITY BIOMETRIC DASHBOARD HERO
   ========================================= */
.telemetry-hero {
  padding: 4.5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 50% 25%, rgba(225, 29, 72, 0.14) 0%, transparent 65%);
}

.hero-head-center {
  text-align: center;
  max-width: 860px;
  margin: 0 auto 2.5rem;
}

.telemetry-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.25rem;
  background: rgba(225, 29, 72, 0.12);
  border: 1px solid rgba(225, 29, 72, 0.3);
  color: var(--color-crimson);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1.25rem;
}

.hero-h1-large {
  font-size: 4.2rem;
  font-weight: 900;
  line-height: 1.05;
  color: #FFFFFF;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.pulse-text {
  background: linear-gradient(135deg, #FFF 30%, var(--color-crimson) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc-large {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 720px;
  margin: 0 auto;
}

/* Central Biometric Telemetry Dashboard Card */
.bio-dashboard {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  max-width: 1040px;
  margin: 0 auto 2rem;
  box-shadow: var(--shadow-dark), 0 0 40px rgba(225, 29, 72, 0.1);
  position: relative;
}

.bio-grid-tiles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.bio-tile {
  background: #0A0D12;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s ease;
}

.bio-tile:hover {
  border-color: var(--color-crimson);
  transform: translateY(-4px);
}

.tile-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(225, 29, 72, 0.12);
  color: var(--color-crimson);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.tile-value {
  font-size: 1.8rem;
  font-weight: 900;
  color: #FFFFFF;
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.tile-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--color-crimson);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.tile-status {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ECG Rhythm Animated Line */
.ecg-line-box {
  background: #07090C;
  border-radius: var(--radius-md);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: 1rem;
}

.ecg-pulse {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-crimson);
  font-weight: 800;
  font-size: 0.88rem;
}

.pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-crimson);
  box-shadow: 0 0 12px var(--color-crimson);
  animation: pulseBeat 1.2s infinite;
}

@keyframes pulseBeat {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.5); opacity: 0.6; }
  100% { transform: scale(1); opacity: 1; }
}

/* Common Section */
.section {
  padding: 6.5rem 0;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  color: var(--color-crimson);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 800;
  margin-bottom: 0.5rem;
  display: block;
}

.section-title {
  font-size: 2.8rem;
  font-weight: 900;
  color: #FFFFFF;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.diag-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all 0.35s ease;
  display: flex;
  flex-direction: column;
}

.diag-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-crimson);
  box-shadow: var(--shadow-dark), 0 0 25px rgba(225, 29, 72, 0.15);
}

.diag-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
}

.diag-body {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.diag-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.diag-desc {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(12px);
  z-index: 999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
}

.modal-box {
  background: var(--color-surface);
  border: 1px solid rgba(225, 29, 72, 0.3);
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-muted);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-crimson);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  background: #0A0D12;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: white;
  font-family: var(--font-main);
  font-size: 0.95rem;
  outline: none;
}

.form-control:focus {
  border-color: var(--color-crimson);
}

/* Footer */
footer {
  background: #06080B;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 5rem 0 2rem;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

@media (max-width: 992px) {
  .hero-h1-large { font-size: 3rem; }
  .bio-grid-tiles { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .hero-h1-large { font-size: 2.4rem; }
  .bio-grid-tiles { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
  }
  .mobile-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr; }
}