/* ═══════════════════════════════════════════════════════
   BIONIC RING — styles.css
   Premium health wearable landing page
   ═══════════════════════════════════════════════════════ */

/* ── RESET & VARIABLES ─────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0a0b0d;
  --bg-2:        #111318;
  --bg-3:        #171c24;
  --surface:     #1a2030;
  --surface-2:   #242d3d;
  --surface-3:   #2d3850;
  --text:        #f0f2f7;
  --text-secondary: #9ba5b8;
  --text-muted:  #5a6680;
  --accent:      #6ee7b7;
  --accent-deep: #059669;
  --accent-dim:  #1a4d3a;
  --accent-glow: #6ee7b733;
  --gold:        #c6a96c;
  --danger:      #ef4444;
  --border:      #ffffff12;
  --border-2:    #ffffff1e;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:   'DM Sans', system-ui, sans-serif;
  --font-mono:   'DM Mono', monospace;
  --radius:      12px;
  --radius-lg:   20px;
  --radius-xl:   32px;
  --shadow:      0 4px 24px #00000040;
  --shadow-lg:   0 16px 64px #00000060;
  --transition:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── TYPOGRAPHY ─────────────────────────────────────────── */
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent-deep);
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.section-tag-light { color: var(--accent); background: #ffffff12; border-color: #ffffff30; }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
}
.section-title em { font-style: italic; color: var(--accent); }
.section-title-light { color: #fff; }

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
}
.section-desc-light { color: #ffffffbb; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header .section-desc { margin: 0 auto; }

/* ── BUTTONS ────────────────────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #0a0b0d;
  font-weight: 600;
  font-size: 15px;
  padding: 13px 26px;
  border-radius: 100px;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary:hover {
  background: #a7f3d0;
  transform: translateY(-1px);
  box-shadow: 0 8px 32px var(--accent-glow);
}
.btn-primary svg { transition: transform 0.2s; }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-ghost {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
  transition: color var(--transition);
}
.btn-ghost:hover { color: var(--text); }

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1.5px solid var(--border-2);
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
  padding: 13px 26px;
  border-radius: 100px;
  transition: var(--transition);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-outline-light {
  display: inline-flex;
  align-items: center;
  border: 1.5px solid #ffffff40;
  color: #fff;
  font-weight: 500;
  font-size: 15px;
  padding: 13px 26px;
  border-radius: 100px;
  transition: var(--transition);
  margin-top: 32px;
}
.btn-outline-light:hover { border-color: var(--accent); color: var(--accent); }

.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-full { width: 100%; justify-content: center; }

/* ── NAV ────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}
.nav-scrolled {
  background: #0a0b0dee;
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.logo-icon {
  font-size: 22px;
  color: var(--accent);
  line-height: 1;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
  margin-left: 16px;
}
.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }

.nav-cta {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-left: auto;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── HERO ───────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 60px;
  padding: 120px 24px 80px;
  max-width: 1200px;
  margin: 0 auto;
  overflow: visible;
}

.hero-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, #6ee7b730, transparent 70%);
  top: -100px; right: -100px;
  animation: orbFloat 8s ease-in-out infinite;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, #06966940, transparent 70%);
  bottom: 100px; left: -100px;
  animation: orbFloat 10s ease-in-out infinite reverse;
}
.hero-orb-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, #c6a96c20, transparent 70%);
  top: 50%; left: 40%;
  animation: orbFloat 12s ease-in-out infinite;
}
@keyframes orbFloat {
  0%,100% { transform: translate(0,0) scale(1); }
  33%      { transform: translate(30px,-20px) scale(1.05); }
  66%      { transform: translate(-20px,30px) scale(0.95); }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 80%);
  opacity: 0.3;
}

.hero-content { z-index: 1; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--accent);
  border: 1px solid var(--accent-deep);
  background: var(--accent-dim);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
  animation: fadeSlideUp 0.8s ease both;
}
.badge-dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.8)} }

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(52px, 7vw, 88px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 24px;
  animation: fadeSlideUp 0.8s 0.1s ease both;
}
.hero-title em { font-style: italic; color: var(--accent); }
.hero-title-accent { color: var(--text); opacity: 0.35; }

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 36px;
  animation: fadeSlideUp 0.8s 0.2s ease both;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  animation: fadeSlideUp 0.8s 0.3s ease both;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  animation: fadeSlideUp 0.8s 0.4s ease both;
}
.stat { text-align: left; }
.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}
.stat-number sup { font-size: 18px; }
.stat-label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-2);
}

/* ── HERO VISUAL ────────────────────────────────────────── */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1;
  animation: fadeSlideUp 1s 0.2s ease both;
}

.ring-showcase {
  position: relative;
  width: 420px;
  height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring-glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at center, var(--accent-glow), transparent 70%);
  animation: glowPulse 3s ease-in-out infinite;
}
@keyframes glowPulse { 0%,100%{opacity:0.6;transform:scale(1)} 50%{opacity:1;transform:scale(1.1)} }

.ring-outer {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(ellipse at 35% 30%,
    color-mix(in srgb, #1a1a1a 60%, white 40%),
    #1a1a1a 50%,
    color-mix(in srgb, #1a1a1a 80%, black 20%)
  );
  box-shadow:
    0 0 0 8px #ffffff08,
    0 0 0 16px #ffffff04,
    0 30px 80px #00000080,
    inset 0 2px 4px #ffffff30,
    inset 0 -2px 4px #00000060;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: ringRotate 20s linear infinite;
  position: relative;
  z-index: 2;
}
@keyframes ringRotate { to { transform: rotate(360deg); } }

.ring-inner {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: var(--bg);
  box-shadow:
    inset 0 4px 12px #00000080,
    0 0 0 2px #ffffff08;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring-core {
  position: relative;
  width: 60px;
  height: 60px;
}
.ring-pulse {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1.5px solid var(--accent);
  animation: ringPulse 3s ease-out infinite;
}
.ring-pulse-2 { animation-delay: 1s; }
.ring-pulse-3 { animation-delay: 2s; }
@keyframes ringPulse { 0%{opacity:1;transform:scale(0.5)} 100%{opacity:0;transform:scale(3)} }

.ring-orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px dashed var(--border-2);
  animation: orbitSpin linear infinite;
}
.ring-orbit-1 { width: 320px; height: 320px; animation-duration: 15s; }
.ring-orbit-2 { width: 380px; height: 380px; animation-duration: 25s; animation-direction: reverse; }
@keyframes orbitSpin { to { transform: rotate(360deg); } }

.orbit-dot {
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

/* Metric cards */
.metric-card {
  position: absolute;
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  z-index: 5;
  animation: cardFloat linear infinite;
}
.metric-icon { font-size: 18px; }
.metric-val { font-size: 22px; font-weight: 700; color: var(--text); line-height: 1; }
.metric-unit { font-size: 11px; color: var(--accent); font-family: var(--font-mono); margin-left: 2px; }
.metric-label { display: block; font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.metric-card-1 { top: 60px; left: -20px; animation-duration: 6s; animation-name: cardFloat1; }
.metric-card-2 { top: 40px; right: -20px; animation-duration: 7s; animation-name: cardFloat2; }
.metric-card-3 { bottom: 100px; left: -30px; animation-duration: 8s; animation-name: cardFloat1; }
.metric-card-4 { bottom: 80px; right: -20px; animation-duration: 5s; animation-name: cardFloat2; }

@keyframes cardFloat1 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }
@keyframes cardFloat2 { 0%,100%{transform:translateY(0)} 50%{transform:translateY(10px)} }

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollAnim 2s ease-in-out infinite;
}
@keyframes scrollAnim { 0%,100%{opacity:1;height:40px} 50%{opacity:0.3;height:20px} }

@keyframes fadeSlideUp { from{opacity:0;transform:translateY(24px)} to{opacity:1;transform:translateY(0)} }

/* ── TRUST BAR ──────────────────────────────────────────── */
.trust-bar {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-2);
  padding: 28px 0;
}
.trust-bar .container {
  display: flex;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}
.trust-intro {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-family: var(--font-mono);
  white-space: nowrap;
  flex-shrink: 0;
}
.trust-logos {
  display: flex;
  align-items: center;
  gap: 36px;
  flex-wrap: wrap;
}
.trust-logos span {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  opacity: 0.7;
  letter-spacing: 0.02em;
  transition: opacity var(--transition);
  white-space: nowrap;
}
.trust-logos span:hover { opacity: 1; }

/* ── FEATURES ───────────────────────────────────────────── */
.features {
  padding: 120px 0;
  background: var(--bg);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.feature-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}
.feature-card:hover { border-color: var(--border-2); transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.feature-card:hover::before { opacity: 1; }

.feature-card-lg { grid-column: span 2; grid-row: span 1; }
.feature-card-wide { grid-column: span 2; }

.feature-icon-wrap {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--accent-dim);
  border: 1px solid var(--accent-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-icon { font-size: 22px; color: var(--accent); }

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
}

.feature-detail { margin-top: auto; }
.detail-chip {
  display: inline-block;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent);
  border: 1px solid var(--accent-deep);
  background: var(--accent-dim);
  padding: 4px 10px;
  border-radius: 100px;
  margin: 3px 4px 3px 0;
}

.feature-visual-heart {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
}
.ecg-line {
  width: 100%;
  height: 50px;
  color: var(--accent);
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: drawLine 3s ease forwards 0.5s, ecgLoop 3s ease 3.5s infinite;
}
@keyframes drawLine { to { stroke-dashoffset: 0; } }
@keyframes ecgLoop {
  0%   { stroke-dashoffset: 0; opacity: 1; }
  90%  { stroke-dashoffset: 0; opacity: 1; }
  100% { stroke-dashoffset: -1000; opacity: 0; }
}

.sleep-bars {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 80px;
  margin-top: 20px;
}
.sleep-bar {
  flex: 1;
  border-radius: 6px 6px 0 0;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 6px;
  transition: opacity var(--transition);
}
.sleep-bar:hover { opacity: 0.8; }
.sleep-bar span { font-size: 10px; color: #fff8; font-family: var(--font-mono); writing-mode: vertical-rl; }

.spo2-gauge {
  position: relative;
  width: 80px; height: 80px;
  margin: 16px auto 0;
}
.gauge-arc {
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 6px solid var(--surface-2);
  border-top-color: var(--accent);
  border-right-color: var(--accent);
  transform: rotate(-135deg);
}
.gauge-val {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.gauge-val span { font-size: 11px; color: var(--text-muted); }

.temp-graph {
  margin-top: 20px;
  height: 60px;
  background: var(--surface);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
}
.temp-line {
  position: absolute;
  top: 50%;
  left: 0; right: 0;
  height: 1px;
  background: var(--border-2);
}
.temp-deviation {
  position: absolute;
  top: 30%; left: 20%; right: 20%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  border-radius: 2px;
  box-shadow: 0 0 12px var(--accent);
}

.readiness-display {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 20px;
}
.readiness-ring-wrap {
  position: relative;
  width: 90px; height: 90px;
}
.readiness-svg { width: 90px; height: 90px; }
.readiness-num {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
}
.readiness-label {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
}

.activity-bars {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  height: 100px;
  margin-top: 20px;
}
.act-day {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  height: 100%;
}
.act-bar-wrap {
  flex: 1;
  width: 100%;
  display: flex;
  align-items: flex-end;
}
.act-bar {
  width: 100%;
  height: var(--h);
  background: var(--surface-3);
  border-radius: 4px 4px 0 0;
  transition: var(--transition);
}
.act-bar-high { background: var(--accent); box-shadow: 0 0 12px var(--accent-glow); }
.act-day:hover .act-bar { opacity: 0.8; }
.act-day span {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ── HEALTH DIVE ─────────────────────────────────────────── */
.health-dive {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}
.health-dive-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0d1f14 0%, #0a0b0d 50%, #0d1520 100%);
}

.health-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  position: relative;
}

.health-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 32px 0;
}
.health-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 15px;
  color: #ffffffcc;
}
.list-icon {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 1px solid var(--accent-deep);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
  margin-top: 1px;
}

/* Sensor diagram */
.sensor-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 420px;
}
.sensor-ring {
  position: relative;
  width: 300px; height: 300px;
}
.sensor-point {
  position: absolute;
  top: 50%; left: 50%;
  transform: rotate(var(--a)) translateY(-140px) rotate(calc(-1 * var(--a)));
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 8px;
}
.sensor-dot {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 16px var(--accent);
  animation: sensorPulse 2s ease-in-out infinite;
}
.sp-1 .sensor-dot { animation-delay: 0s; }
.sp-2 .sensor-dot { animation-delay: 0.4s; }
.sp-3 .sensor-dot { animation-delay: 0.8s; }
.sp-4 .sensor-dot { animation-delay: 1.2s; }
.sp-5 .sensor-dot { animation-delay: 1.6s; }
@keyframes sensorPulse {
  0%,100% { transform:scale(1); box-shadow:0 0 16px var(--accent); }
  50% { transform:scale(1.4); box-shadow:0 0 28px var(--accent), 0 0 50px var(--accent-glow); }
}
.sensor-label {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  text-align: center;
  line-height: 1.3;
}
.sensor-label span { color: var(--accent); }

.sensor-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.sensor-center-ring {
  width: 80px; height: 80px;
  border-radius: 50%;
  border: 1.5px solid var(--border-2);
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  animation: sensorRingPulse 4s ease-in-out infinite;
}
@keyframes sensorRingPulse {
  0%,100% { width:80px;height:80px;opacity:0.8 }
  50% { width:100px;height:100px;opacity:0.4 }
}
.sensor-center-dot {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 24px var(--accent);
}

/* ── DESIGN SECTION ──────────────────────────────────────── */
.design-section {
  padding: 120px 0;
  background: var(--bg);
}

.color-picker {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 60px;
  justify-content: center;
}
.color-options { display: flex; gap: 12px; }
.color-btn {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--c);
  border: 3px solid transparent;
  transition: var(--transition);
  position: relative;
}
.color-btn.active {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--accent);
}
.color-btn:hover { transform: scale(1.15); }
.color-name {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
}

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

.ring-display-ring {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}
.ring-display-outer {
  width: 280px; height: 280px;
  border-radius: 50%;
  background: radial-gradient(ellipse at 35% 30%,
    color-mix(in srgb, #1a1a1a 60%, white 40%),
    #1a1a1a 50%,
    color-mix(in srgb, #1a1a1a 80%, black 20%)
  );
  box-shadow:
    0 0 0 10px #ffffff06,
    0 40px 100px #00000090,
    inset 0 2px 6px #ffffff25,
    inset 0 -3px 6px #00000070;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.5s ease;
}
.ring-display-inner {
  width: 160px; height: 160px;
  border-radius: 50%;
  background: var(--bg);
  box-shadow: inset 0 4px 16px #00000090, 0 0 0 2px #ffffff06;
}
.ring-display-shine {
  position: absolute;
  top: 15%; left: 20%;
  width: 60px; height: 20px;
  background: radial-gradient(ellipse, #ffffff35, transparent);
  border-radius: 50%;
  transform: rotate(-30deg);
  pointer-events: none;
}

.ring-specs-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.spec-item {
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
}
.spec-label {
  display: block;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}
.spec-val {
  display: block;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

/* ── APP SECTION ─────────────────────────────────────────── */
.app-section {
  padding: 120px 0;
  background: var(--bg-2);
}

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

.app-phone-wrap { position: relative; display: flex; justify-content: center; }
.app-phone {
  width: 280px;
  background: #0d1117;
  border-radius: 40px;
  border: 1px solid var(--border-2);
  overflow: hidden;
  box-shadow: 0 40px 100px #00000080, 0 0 0 1px #ffffff08;
  position: relative;
  z-index: 2;
}
.app-screen {
  background: #0d1117;
  padding: 0 0 16px;
}
.app-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px 12px;
  font-size: 12px;
  color: var(--text-secondary);
}
.app-title { font-weight: 600; color: var(--text); }

.app-readiness-hero {
  display: flex;
  justify-content: center;
  padding: 20px 20px 24px;
  background: linear-gradient(180deg, #111827, #0d1117);
}
.app-score-ring {
  position: relative;
  width: 120px; height: 120px;
}
.app-score-ring svg { width: 120px; height: 120px; }
.app-score-num {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  line-height: 1;
}
.app-score-lbl {
  position: absolute;
  bottom: 16px;
  left: 0; right: 0;
  text-align: center;
  font-size: 10px;
  color: #6ee7b7;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
}

.app-metrics-row {
  display: flex;
  padding: 0 16px 20px;
  gap: 8px;
}
.app-metric {
  flex: 1;
  background: var(--surface);
  border-radius: 12px;
  padding: 12px 8px;
  text-align: center;
}
.app-metric-icon { font-size: 16px; margin-bottom: 4px; }
.app-metric-val { display: block; font-size: 13px; font-weight: 700; color: #fff; }
.app-metric-lbl { display: block; font-size: 9px; color: var(--text-muted); font-family: var(--font-mono); margin-top: 2px; }

.app-trend-card {
  margin: 0 16px 16px;
  background: var(--surface);
  border-radius: 12px;
  padding: 14px;
}
.app-trend-label { font-size: 10px; color: var(--text-muted); font-family: var(--font-mono); margin-bottom: 10px; }
.app-trend-graph { height: 50px; }
.app-trend-graph svg { width: 100%; height: 50px; }

.app-nav-bar {
  display: flex;
  padding: 0 12px;
  gap: 2px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.app-nav-item {
  flex: 1;
  font-size: 9px;
  color: var(--text-muted);
  text-align: center;
  font-family: var(--font-mono);
  padding: 4px 0;
}
.app-nav-active { color: #6ee7b7; }

.phone-glow {
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px; height: 60px;
  background: var(--accent-glow);
  filter: blur(30px);
  border-radius: 50%;
  z-index: 1;
}

.app-features-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 32px 0;
}
.app-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 15px;
  color: var(--text-secondary);
}
.app-feature-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
  margin-top: 6px;
  box-shadow: 0 0 10px var(--accent);
}
.app-feature-item strong { color: var(--text); }

.store-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1.5px solid var(--border-2);
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  padding: 11px 20px;
  border-radius: var(--radius);
  transition: var(--transition);
}
.store-badge:hover { border-color: var(--accent); color: var(--accent); }

/* ── COMPARE ─────────────────────────────────────────────── */
.compare-section {
  padding: 120px 0;
  background: var(--bg);
}
.compare-table-wrap { overflow-x: auto; }
.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}
.compare-table th {
  padding: 16px 24px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.compare-table th.highlight-col {
  color: var(--accent);
  background: var(--accent-dim);
  border-radius: var(--radius) var(--radius) 0 0;
}
.compare-table td {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}
.compare-table td.highlight-col {
  background: #6ee7b708;
  border-left: 1px solid var(--accent-deep);
  border-right: 1px solid var(--accent-deep);
}
.compare-table tr:last-child td.highlight-col {
  border-bottom: 1px solid var(--accent-deep);
  border-radius: 0 0 var(--radius) var(--radius);
}
.compare-table tr:hover td { background: var(--bg-2); }
.compare-table tr:hover td.highlight-col { background: #6ee7b710; }

.check { color: var(--accent); font-weight: 600; }
.cross { color: #ef4444; }
.partial { color: var(--gold); }

/* ── TESTIMONIALS ────────────────────────────────────────── */
.testimonials {
  padding: 120px 0;
  background: var(--bg-2);
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  position: relative;
  transition: var(--transition);
}
.testimonial-card:hover { border-color: var(--border-2); transform: translateY(-4px); }
.testimonial-card-featured {
  background: linear-gradient(135deg, #0d2a1e, #0a1a12);
  border-color: var(--accent-deep);
}
.testi-quote {
  font-family: var(--font-display);
  font-size: 60px;
  color: var(--accent);
  line-height: 0.8;
  margin-bottom: 20px;
  opacity: 0.4;
}
.testimonial-card p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.testi-author {
  display: flex;
  align-items: center;
  gap: 14px;
}
.testi-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.testi-author strong { display: block; font-size: 14px; color: var(--text); }
.testi-author span { font-size: 12px; color: var(--text-muted); }

/* ── ORDER ───────────────────────────────────────────────── */
.order-section {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}
.order-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0d1f14 0%, #0a0b0d 60%, #0d1a2a 100%);
}
.order-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.25;
}
.order-orb-1 { width: 500px; height: 500px; background: var(--accent); top: -100px; right: -100px; }
.order-orb-2 { width: 400px; height: 400px; background: #3b82f6; bottom: -100px; left: -100px; }

.order-content { position: relative; text-align: center; }
.order-title {
  font-family: var(--font-display);
  font-size: clamp(44px, 6vw, 76px);
  font-weight: 900;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: #fff;
  margin-bottom: 60px;
}
.order-title em { font-style: italic; color: var(--accent); }

.order-cards {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  max-width: 760px;
  margin: 0 auto 32px;
}
.order-card {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  flex: 1;
  min-width: 280px;
  max-width: 340px;
  text-align: left;
  position: relative;
}
.order-card-premium {
  background: linear-gradient(135deg, #0d2a1e, #0a1a12);
  border-color: var(--accent-deep);
}
.order-badge-tag {
  display: inline-block;
  background: var(--accent);
  color: #0a0b0d;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.order-plan { font-size: 14px; font-weight: 500; color: var(--text-secondary); margin-bottom: 12px; }
.order-price {
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
  margin-bottom: 6px;
}
.order-price sup { font-size: 24px; vertical-align: top; margin-top: 8px; }
.order-freq { font-size: 13px; color: var(--text-muted); margin-bottom: 28px; }
.order-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 32px;
}
.order-features li {
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.order-features li::before {
  content: '✓';
  color: var(--accent);
  font-size: 13px;
  flex-shrink: 0;
}
.order-footnote {
  font-size: 13px;
  color: #ffffff50;
  margin-top: 24px;
}

/* ── FOOTER ──────────────────────────────────────────────── */
.footer {
  background: #070809;
  border-top: 1px solid var(--border);
  padding: 80px 0 32px;
}
.footer-top {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 80px;
  margin-bottom: 64px;
}
.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 16px 0 24px;
  line-height: 1.6;
}
.footer-social { display: flex; gap: 14px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border-2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-muted);
  transition: var(--transition);
}
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.footer-col h4 {
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--text); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-bottom p { font-size: 12px; color: var(--text-muted); }
.footer-certifications { display: flex; gap: 10px; }
.cert-badge {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--accent);
  border: 1px solid var(--accent-deep);
  background: var(--accent-dim);
  padding: 4px 10px;
  border-radius: 6px;
}

/* ── SCROLL REVEAL ───────────────────────────────────────── */
.reveal-el {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-el.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-subtitle { max-width: 100%; }
  .hero-stats { justify-content: center; }
  .hero-actions { justify-content: center; }
  .hero-visual { order: -1; }
  .ring-showcase { width: 340px; height: 340px; }
  .hero-scroll-hint { display: none; }

  .features-grid { grid-template-columns: 1fr 1fr; }
  .feature-card-lg { grid-column: span 2; }
  .feature-card-wide { grid-column: span 2; }

  .health-split { grid-template-columns: 1fr; gap: 60px; }
  .ring-display { grid-template-columns: 1fr; }
  .ring-display-ring { width: 240px; height: 240px; }
  .ring-display-outer { width: 200px; height: 200px; }
  .ring-display-inner { width: 120px; height: 120px; }

  .app-split { grid-template-columns: 1fr; }
  .app-phone-wrap { order: -1; }

  .testimonials-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 48px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; position: fixed; top: 70px; left: 0; right: 0;
    background: var(--bg-2); padding: 24px; flex-direction: column; gap: 20px;
    border-bottom: 1px solid var(--border); }
  .nav-links.nav-open { display: flex; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }

  .features-grid { grid-template-columns: 1fr; }
  .feature-card-lg, .feature-card-wide { grid-column: span 1; }
  .ring-showcase { width: 280px; height: 280px; }
  .metric-card { display: none; }
  .ring-outer { width: 200px; height: 200px; }
  .ring-inner { width: 110px; height: 110px; }

  .trust-bar .container { flex-direction: column; align-items: flex-start; gap: 16px; }
  .footer-links { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .order-cards { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  .hero { padding: 100px 20px 60px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn-primary, .hero-actions .btn-outline {
    text-align: center; justify-content: center;
  }
  .ring-showcase { width: 240px; height: 240px; }
  .ring-outer { width: 170px; height: 170px; }
  .ring-inner { width: 90px; height: 90px; }
  .ring-orbit-1 { width: 220px; height: 220px; }
  .ring-orbit-2 { width: 240px; height: 240px; }
  .footer-links { grid-template-columns: 1fr; }
}