/* ============================================
   NERVAEASE - styles.css
   Design: Medical Professional + Premium Luxury
   Color Palette: Deep Teal, Gold, Clean White
   ============================================ */

/* ---------- CSS VARIABLES ---------- */
:root {
  --primary: #0a5c6b;
  --primary-dark: #073d47;
  --primary-light: #1a7f91;
  --accent: #d4af37;
  --accent-dark: #b8952e;
  --text-dark: #0f1922;
  --text-body: #2d4a52;
  --text-muted: #5e7a83;
  --bg-white: #ffffff;
  --bg-light: #f0f7f9;
  --bg-dark: #0a1e24;
  --success: #10b981;
  --danger: #ef4444;
  --border: #d1e8ec;
  --shadow: 0 8px 32px rgba(10,92,107,0.12);
  --shadow-hover: 0 20px 60px rgba(10,92,107,0.22);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, sans-serif;
}

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}
* { -webkit-tap-highlight-color: transparent; }
body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--bg-white);
  overflow-x: hidden;
  line-height: 1.7;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
input, select, textarea { font-size: 16px; }

/* ---------- TYPOGRAPHY ---------- */
.section-h2, h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 4vw, 38px);
  color: var(--text-dark);
  line-height: 1.25;
  margin-bottom: 1rem;
}
h3 {
  font-family: var(--font-body);
  font-size: clamp(17px, 2.5vw, 22px);
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}
p { color: var(--text-body); line-height: 1.75; }
.highlight { color: var(--primary); }
.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gold-text { color: var(--accent); }
.section-label {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  color: #fff;
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}
.section-label.light {
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.4);
}
.section-intro {
  font-size: clamp(15px, 2vw, 17px);
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 2rem;
  text-align: center;
}

/* ---------- CONTAINER ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- BUTTONS ---------- */
.btn-hero, .btn-primary, .btn-final {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 16px 36px;
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: clamp(15px, 2vw, 18px);
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-align: center;
  width: 100%;
  max-width: 420px;
}
.btn-hero {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--text-dark);
  box-shadow: 0 8px 30px rgba(212,175,55,0.4);
  animation: pulse-glow 2.5s ease-in-out infinite;
}
.btn-hero:hover { transform: scale(1.05); box-shadow: 0 16px 50px rgba(212,175,55,0.5); }
.btn-hero:active { transform: scale(0.98); }
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: var(--shadow);
}
.btn-primary:hover { transform: scale(1.05); box-shadow: var(--shadow-hover); }
.btn-primary:active { transform: scale(0.98); }
.btn-final {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--text-dark);
  font-size: clamp(16px, 2.5vw, 20px);
  box-shadow: 0 10px 40px rgba(212,175,55,0.5);
  animation: pulse-glow 2.5s ease-in-out infinite;
  max-width: 520px;
}
.btn-final:hover { transform: scale(1.05); }
.btn-final:active { transform: scale(0.98); }

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 8px 30px rgba(212,175,55,0.4); }
  50% { box-shadow: 0 12px 50px rgba(212,175,55,0.7); }
}

/* ---------- NAVBAR ---------- */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(10,92,107,0.12);
  padding: 0;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1200px;
  margin: 0 auto;
  gap: 20px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
}
.nav-logo img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-weight: 600;
  font-size: 14px;
  color: var(--text-dark);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover { color: var(--primary); }
.nav-cta-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: var(--transition);
}
.nav-cta-btn:hover { transform: scale(1.05); box-shadow: var(--shadow); }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  padding: 120px 0 80px;
  background: linear-gradient(135deg, #eaf5f7 0%, #f8fcfd 40%, #fff9ee 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero-bg-shapes { position: absolute; inset: 0; pointer-events: none; }
.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.08;
}
.shape-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--primary), transparent);
  top: -200px; right: -200px;
}
.shape-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--accent), transparent);
  bottom: -100px; left: -100px;
}
.shape-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, var(--primary-light), transparent);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}
.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  order: 1;
}
.hero-img-wrapper {
  position: relative;
  display: inline-block;
}
.hero-product-img {
  width: clamp(240px, 40vw, 450px);
  height: auto;
  filter: drop-shadow(0 30px 60px rgba(10,92,107,0.2));
  animation: float-hero 4s ease-in-out infinite;
  position: relative;
  z-index: 2;
}
@keyframes float-hero {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  33% { transform: translateY(-18px) rotate(1.5deg); }
  66% { transform: translateY(-8px) rotate(-1deg); }
}
.hero-badge {
  position: absolute;
  top: 10%;
  left: -20%;
  background: #fff;
  border: 2px solid var(--border);
  padding: 10px 16px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 13px;
  color: var(--primary);
  box-shadow: var(--shadow);
  animation: float-badge1 3s ease-in-out infinite;
  z-index: 3;
  white-space: nowrap;
}
.hero-badge-2 {
  position: absolute;
  bottom: 15%;
  right: -15%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 8px 24px rgba(212,175,55,0.4);
  animation: float-badge2 3.5s ease-in-out infinite;
  z-index: 3;
  white-space: nowrap;
}
@keyframes float-badge1 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes float-badge2 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(10px); }
}
.floating-particle {
  position: absolute;
  border-radius: 50%;
  animation: orbit 6s linear infinite;
  z-index: 1;
}
.p1 { width: 14px; height: 14px; background: var(--accent); opacity: 0.6; top: 20%; right: 5%; animation-duration: 5s; }
.p2 { width: 10px; height: 10px; background: var(--primary-light); opacity: 0.5; bottom: 25%; left: 5%; animation-duration: 7s; animation-direction: reverse; }
.p3 { width: 8px; height: 8px; background: var(--success); opacity: 0.7; top: 60%; right: -5%; animation-duration: 4s; }
@keyframes orbit {
  0% { transform: translate(0,0) rotate(0deg); }
  25% { transform: translate(20px,-15px) rotate(90deg); }
  50% { transform: translate(0,-30px) rotate(180deg); }
  75% { transform: translate(-20px,-15px) rotate(270deg); }
  100% { transform: translate(0,0) rotate(360deg); }
}

.hero-content { order: 2; }
.hero-tag {
  display: inline-block;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-h1 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.5vw, 48px);
  line-height: 1.2;
  color: var(--text-dark);
  margin-bottom: 20px;
}
.hero-desc {
  font-size: clamp(15px, 2vw, 17px);
  color: var(--text-body);
  margin-bottom: 18px;
  line-height: 1.8;
}
.hero-stats {
  display: flex;
  align-items: center;
  gap: 20px;
  margin: 24px 0;
  flex-wrap: wrap;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.stat strong { font-size: 22px; color: var(--primary); font-weight: 800; }
.stat span { font-size: 12px; color: var(--text-muted); font-weight: 600; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }
.hero-sub-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 14px;
  font-weight: 600;
}

/* ---------- TRUST SECTION ---------- */
.trust-section {
  padding: 80px 0;
  background: var(--bg-light);
  text-align: center;
}
.trust-section h2 { margin-bottom: 40px; }
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.trust-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(30px);
}
.trust-card.visible {
  opacity: 1;
  transform: translateY(0);
}
.trust-card:hover {
  transform: translateY(-8px) rotate(1deg) scale(1.03);
  box-shadow: var(--shadow-hover);
}
.trust-card-inner { padding: 28px 20px; }
.trust-card img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  margin: 0 auto 16px;
}
.trust-card h3 { font-size: 16px; color: var(--primary); margin-bottom: 10px; }
.trust-card p { font-size: 14px; line-height: 1.6; }

/* ---------- WHAT IS ---------- */
.what-is { padding: 80px 0; background: #fff; }
.what-is-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.what-is-content h2 { margin-bottom: 20px; }
.what-is-content p { margin-bottom: 18px; font-size: 16px; }
.what-is-content .btn-primary { margin-top: 12px; max-width: 280px; min-height: 50px; }
.what-is-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  max-width: 380px;
  margin: 0 auto;
}

/* ---------- HOW IT WORKS ---------- */
.how-it-works {
  padding: 80px 0;
  background: var(--bg-dark);
  text-align: center;
}
.how-it-works h2, .how-it-works .highlight { color: #fff; }
.how-it-works .highlight { color: var(--accent); }
.how-it-works .section-intro { color: rgba(255,255,255,0.7); }
.accordion { max-width: 800px; margin: 0 auto; text-align: left; }
.accordion-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.accordion-item.active { background: rgba(255,255,255,0.1); border-color: var(--accent); }
.accordion-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: clamp(14px, 2vw, 16px);
  font-weight: 600;
  color: #fff;
  min-height: 64px;
  gap: 12px;
  text-align: left;
}
.acc-icon {
  font-size: 22px;
  font-weight: 300;
  color: var(--accent);
  transition: var(--transition);
  flex-shrink: 0;
}
.accordion-item.active .acc-icon { transform: rotate(45deg); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease, padding 0.3s ease;
}
.accordion-item.active .accordion-body { max-height: 300px; }
.accordion-body p {
  padding: 0 24px 24px;
  color: rgba(255,255,255,0.8);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- REVIEWS ---------- */
.reviews-section { padding: 80px 0; background: var(--bg-light); text-align: center; }
.reviews-section h2 { margin-bottom: 16px; }
.stars-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.stars-img { width: 120px; height: auto; }
.stars-header span { font-size: 15px; color: var(--text-muted); font-weight: 600; }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  text-align: left;
  transition: var(--transition);
  opacity: 0;
  transform: translateY(20px);
}
.review-card.visible { opacity: 1; transform: translateY(0); }
.review-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.review-top {
  display: flex;
  gap: 14px;
  margin-bottom: 16px;
  align-items: flex-start;
}
.review-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border);
  flex-shrink: 0;
}
.review-location { font-size: 13px; color: var(--text-muted); display: block; margin-bottom: 4px; }
.review-stars { font-size: 14px; }
.review-text { font-size: 15px; line-height: 1.75; }

/* ---------- PRICING ---------- */
.pricing-section, .pricing-section-2 {
  padding: 80px 0;
  background: var(--bg-dark);
  text-align: center;
}
.pricing-section h2 { color: #fff; }
.pricing-section h2 .highlight, .pricing-section-2 h2 .highlight { color: var(--accent); }
.pricing-section .section-intro, .pricing-section-2 .section-intro { color: rgba(255,255,255,0.7); }
.pricing-section-2 h2 { color: #fff; }
.countdown-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.countdown-label { font-weight: 700; color: rgba(255,255,255,0.9); font-size: 16px; }
.countdown-timer {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(212,175,55,0.15);
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 12px 24px;
}
.time-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 56px;
}
.time-block span {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 800;
  color: var(--accent);
  font-family: var(--font-display);
  line-height: 1;
}
.time-block label { font-size: 11px; color: rgba(255,255,255,0.6); font-weight: 600; letter-spacing: 1px; }
.time-colon { font-size: 36px; font-weight: 800; color: var(--accent); line-height: 1; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto 32px;
}
.pricing-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  position: relative;
  border: 2px solid var(--border);
  transition: var(--transition);
}
.pricing-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.pricing-card.popular {
  border-color: var(--accent);
  transform: scale(1.04);
  box-shadow: 0 20px 60px rgba(212,175,55,0.3);
}
.pricing-card.popular:hover { transform: scale(1.04) translateY(-8px); }
.popular-badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
  letter-spacing: 0.5px;
}
.pricing-label {
  font-size: 13px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 6px;
}
.pricing-qty { font-size: 22px; font-weight: 800; color: var(--text-dark); }
.pricing-supply { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.pricing-img {
  width: clamp(80px, 15vw, 140px);
  height: auto;
  margin: 0 auto 16px;
  object-fit: contain;
}
.price-main { font-size: clamp(24px, 4vw, 36px); font-weight: 800; color: var(--primary); }
.price-old { font-size: 18px; color: var(--text-muted); text-decoration: line-through; font-weight: 500; }
.price-per { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; }
.pricing-perks { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.perk {
  background: linear-gradient(135deg, #ecfdf5, #d1fae5);
  color: #065f46;
  padding: 5px 12px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
}
.price-total { font-size: 14px; color: var(--text-muted); margin-bottom: 14px; }
.btn-pricing {
  display: block;
  margin: 0 auto 12px;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}
.btn-pricing:hover { transform: scale(1.05); }
.btn-pricing:active { transform: scale(0.98); }
.atc-img { width: 100%; max-width: 200px; height: auto; }
.cards-img { width: 100%; max-width: 200px; height: auto; margin: 0 auto; }
.popular-btn .atc-img { filter: brightness(1.1); }
.stars-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.stars-bottom img { width: 100px; }
.stars-bottom span { color: rgba(255,255,255,0.8); font-size: 14px; font-weight: 600; }

/* ---------- BONUS SECTION ---------- */
.bonus-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #fff9ee, #f0f7f9);
  text-align: center;
}
.bonus-section h2 { margin-bottom: 40px; }
.bonus-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 860px;
  margin: 0 auto;
}
.bonus-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 24px;
  border: 2px solid var(--border);
  text-align: center;
  transition: var(--transition);
}
.bonus-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.bonus-number {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #fff;
  display: inline-block;
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.bonus-card img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  margin: 0 auto 16px;
}
.bonus-card h3 { margin-bottom: 12px; }
.bonus-card p { font-size: 15px; margin-bottom: 14px; }
.bonus-value {
  background: var(--bg-light);
  padding: 8px 16px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 14px;
  color: var(--success);
  display: inline-block;
}

/* ---------- INGREDIENTS ---------- */
.ingredients-section {
  padding: 80px 0;
  background: #fff;
  text-align: center;
}
.ingredients-section h2 { margin-bottom: 16px; }
.ingredients-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 32px;
}
.ingredient-card {
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: left;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.ingredient-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.ing-icon { font-size: 32px; margin-bottom: 12px; }
.ingredient-card h3 { color: var(--primary); margin-bottom: 10px; font-size: 18px; }
.ingredient-card p { font-size: 14px; line-height: 1.7; }

/* ---------- SCIENCE SECTION ---------- */
.science-section {
  padding: 80px 0;
  background: var(--bg-light);
  text-align: center;
}
.science-section h2 { margin-bottom: 16px; }
.science-accordion { max-width: 800px; margin: 0 auto; text-align: left; }
.sci-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.sci-item.active { border-color: var(--primary); }
.sci-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: clamp(14px, 2vw, 16px);
  font-weight: 600;
  color: var(--text-dark);
  min-height: 64px;
  gap: 12px;
  text-align: left;
}
.sci-header .acc-icon { color: var(--primary); }
.sci-item.active .sci-header .acc-icon { transform: rotate(45deg); }
.sci-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease;
}
.sci-item.active .sci-body { max-height: 300px; }
.sci-body p {
  padding: 0 24px 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
}

/* ---------- GUARANTEE ---------- */
.guarantee-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #f0f7f9, #fff9ee);
}
.guarantee-container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: center;
}
.guarantee-image img {
  width: 300px;
  margin: 0 auto;
  filter: drop-shadow(0 20px 40px rgba(10,92,107,0.15));
  animation: float-hero 5s ease-in-out infinite;
}
.guarantee-content h2 { margin-bottom: 28px; }
.guarantee-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  align-items: flex-start;
}
.guarantee-icon {
  font-size: 30px;
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-light);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.guarantee-content h3 { margin-bottom: 6px; font-size: 17px; }
.guarantee-content p { font-size: 15px; line-height: 1.7; }
.guarantee-content .btn-primary { margin-top: 16px; max-width: 340px; min-height: 52px; }

/* ---------- BENEFITS ---------- */
.benefits-section {
  padding: 80px 0;
  background: var(--bg-dark);
  text-align: center;
}
.benefits-section h2 { color: #fff; }
.benefits-section .highlight { color: var(--accent); }
.benefits-section .section-label { background: rgba(212,175,55,0.2); color: var(--accent); }
.benefits-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
  text-align: left;
}
.benefit-item {
  display: flex;
  gap: 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 24px;
  align-items: flex-start;
  transition: var(--transition);
}
.benefit-item:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--accent);
}
.benefit-check { font-size: 24px; flex-shrink: 0; }
.benefit-item h3 { color: #fff; margin-bottom: 6px; font-size: 16px; }
.benefit-item p { color: rgba(255,255,255,0.7); font-size: 14px; line-height: 1.6; }

/* ---------- FAQ ---------- */
.faq-section {
  padding: 80px 0;
  background: var(--bg-light);
  text-align: center;
}
.faq-section h2 { margin-bottom: 40px; }
.faq-list { max-width: 800px; margin: 0 auto; text-align: left; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq-item.active { border-color: var(--primary); }
.faq-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  font-size: clamp(14px, 2vw, 16px);
  font-weight: 600;
  color: var(--text-dark);
  min-height: 64px;
  gap: 12px;
  text-align: left;
}
.faq-icon { font-size: 22px; color: var(--primary); transition: var(--transition); flex-shrink: 0; }
.faq-item.active .faq-icon { transform: rotate(45deg); }
.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s ease;
}
.faq-item.active .faq-body { max-height: 300px; }
.faq-body p {
  padding: 0 24px 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
}

/* ---------- FINAL CTA ---------- */
.final-cta {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  text-align: center;
  position: relative;
  overflow: hidden;
}
.final-cta-bg { position: absolute; inset: 0; pointer-events: none; }
.cta-shape-1 {
  position: absolute;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(212,175,55,0.15), transparent);
  top: -200px; right: -100px;
  border-radius: 50%;
  animation: pulse-ring 4s ease-in-out infinite;
}
.cta-shape-2 {
  position: absolute;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.08), transparent);
  bottom: -100px; left: -50px;
  border-radius: 50%;
}
@keyframes pulse-ring {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
}
.final-cta-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
  position: relative;
  z-index: 2;
}
.final-img-wrapper {
  position: relative;
  display: inline-block;
}
.final-product-img {
  width: clamp(200px, 30vw, 350px);
  filter: drop-shadow(0 30px 60px rgba(0,0,0,0.4));
  animation: float-hero 4s ease-in-out infinite;
}
.final-float-1, .final-float-2, .final-float-3 {
  position: absolute;
  font-size: 28px;
  animation: orbit 5s linear infinite;
}
.final-float-1 { top: 10%; left: -20%; animation-duration: 4s; }
.final-float-2 { top: 30%; right: -20%; animation-duration: 6s; animation-direction: reverse; }
.final-float-3 { bottom: 10%; left: -10%; animation-duration: 5s; }
.final-content { text-align: center; max-width: 680px; }
.final-h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 42px);
  color: #fff;
  line-height: 1.25;
  margin-bottom: 16px;
}
.final-desc { color: rgba(255,255,255,0.85); font-size: 17px; margin-bottom: 24px; }
.final-price { margin-bottom: 24px; }
.final-old { color: rgba(255,255,255,0.6); font-size: 16px; margin-bottom: 8px; }
.final-new { font-size: clamp(24px, 4vw, 36px); color: var(--accent); font-weight: 800; }
.final-trust {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 20px;
}
.final-trust span { color: rgba(255,255,255,0.8); font-size: 14px; font-weight: 600; }

/* ---------- FOOTER ---------- */
.footer {
  background: #020f13;
  color: rgba(255,255,255,0.7);
  padding: 60px 0 30px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 30px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-brand img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}
.footer-brand-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: #fff;
}
.footer-brand p { font-size: 14px; max-width: 280px; line-height: 1.6; }
.social-icons {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}
.social-icons a {
  width: 40px; height: 40px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: var(--transition);
}
.social-icons a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-3px);
}
.footer-links-col { display: flex; flex-direction: column; gap: 10px; }
.footer-links-col h4 { color: #fff; font-size: 16px; margin-bottom: 6px; }
.footer-links-col a { font-size: 14px; transition: var(--transition); }
.footer-links-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-disclaimer {
  text-align: center;
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 20px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.footer-disclaimer p { color: rgba(255,255,255,0.5); margin-bottom: 8px; }
.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  align-items: center;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.legal-link { font-size: 13px; color: rgba(255,255,255,0.5); transition: var(--transition); padding: 4px 6px; }
.legal-link:hover { color: var(--accent); }
.link-separator { color: rgba(255,255,255,0.2); }

/* ---------- PURCHASE NOTIFICATION POPUP ---------- */
.purchase-popup {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 9999;
  transform: translateX(-200%);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  max-width: 300px;
}
.purchase-popup.show { transform: translateX(0); }
.popup-content {
  background: #fff;
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
  border-left: 4px solid var(--success);
}
.popup-content img { width: 50px; height: 50px; object-fit: contain; flex-shrink: 0; }
.popup-text { display: flex; flex-direction: column; }
.popup-text strong { font-size: 14px; color: var(--text-dark); }
.popup-text span { font-size: 13px; color: var(--text-muted); }
.popup-close {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-muted);
  min-width: 28px;
  min-height: 28px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ---------- EXIT/DELAY POPUP ---------- */
.overlay-popup {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  padding: 20px;
}
.overlay-popup.show { opacity: 1; pointer-events: all; }
.overlay-popup-inner {
  background: #fff;
  border-radius: var(--radius-lg);
  max-width: 460px;
  width: 100%;
  position: relative;
  overflow: hidden;
  animation: popup-slide 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
@keyframes popup-slide {
  from { transform: translateY(40px) scale(0.95); opacity: 0; }
  to { transform: translateY(0) scale(1); opacity: 1; }
}
.overlay-close {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--bg-dark);
  border: none;
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
  transition: var(--transition);
  padding: 0;
}
.overlay-close a { color: #fff; display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; }
.overlay-close:hover { background: var(--primary); }
.overlay-popup-content {
  padding: 36px 28px;
  text-align: center;
  background: linear-gradient(135deg, #f0f7f9, #fff);
}
.popup-tag {
  background: linear-gradient(135deg, var(--danger), #f97316);
  color: #fff;
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 800;
  display: inline-block;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.overlay-popup-content h3 {
  font-family: var(--font-display);
  font-size: clamp(20px, 4vw, 26px);
  color: var(--text-dark);
  margin-bottom: 16px;
}
.popup-product-img { width: 120px; margin: 0 auto 14px; object-fit: contain; }
.overlay-popup-content p { font-size: 15px; margin-bottom: 14px; color: var(--text-body); }
.popup-price { font-size: 22px; font-weight: 800; color: var(--primary); margin-bottom: 20px; }
.popup-price s { color: var(--text-muted); font-weight: 400; font-size: 16px; }
.btn-popup-cta {
  display: block;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--text-dark);
  padding: 16px 28px;
  border-radius: 50px;
  font-weight: 800;
  font-size: 16px;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  animation: pulse-glow 2s ease-in-out infinite;
}
.btn-popup-cta:hover { transform: scale(1.05); }
.popup-sub { font-size: 12px; color: var(--text-muted); margin-top: 12px; margin-bottom: 0; }

/* ---------- SCROLL TO TOP ---------- */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  z-index: 999;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}
.scroll-top.show { opacity: 1; transform: translateY(0); }
.scroll-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

/* ---------- FADE-IN ANIMATION ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   RESPONSIVE — MOBILE FIRST
   ============================================ */

@media (max-width: 991px) {
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .ingredients-grid { grid-template-columns: repeat(2, 1fr); }
  .benefits-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 767px) {
  /* Nav */
  .hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    flex-direction: column;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    padding: 24px;
    gap: 16px;
    transform: translateX(-100%);
    transition: transform 0.35s cubic-bezier(0.4,0,0.2,1);
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
    z-index: 998;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { transform: translateX(0); }
  .nav-link { font-size: 16px; padding: 10px 0; border-bottom: 1px solid var(--border); width: 100%; }
  .nav-cta-btn { width: 100%; text-align: center; padding: 14px; font-size: 16px; min-height: 52px; }

  /* Hero */
  .hero { padding: 100px 0 60px; }
  .hero-container { grid-template-columns: 1fr; gap: 36px; }
  .hero-image { order: 1; }
  .hero-content { order: 2; }
  .hero-badge { left: -5%; font-size: 11px; padding: 8px 12px; }
  .hero-badge-2 { right: -5%; font-size: 11px; padding: 8px 12px; }
  .hero-stats { gap: 14px; justify-content: center; }
  .btn-hero { max-width: 100%; }
  .hero-sub-note { font-size: 12px; }

  /* What is */
  .what-is-container { grid-template-columns: 1fr; gap: 32px; }
  .what-is-image img { max-width: 280px; }
  .what-is-content .btn-primary { max-width: 100%; }

  /* Trust */
  .trust-grid { grid-template-columns: 1fr; }

  /* Reviews */
  .reviews-grid { grid-template-columns: 1fr; }

  /* Pricing */
  .pricing-grid { grid-template-columns: 1fr; max-width: 380px; }
  .pricing-card.popular { transform: scale(1); }
  .pricing-card.popular:hover { transform: translateY(-8px); }

  /* Bonus */
  .bonus-grid { grid-template-columns: 1fr; }

  /* Ingredients */
  .ingredients-grid { grid-template-columns: 1fr; }

  /* Guarantee */
  .guarantee-container { grid-template-columns: 1fr; gap: 32px; }
  .guarantee-image img { max-width: 200px; }
  .guarantee-content .btn-primary { max-width: 100%; }

  /* Benefits */
  .benefits-grid { grid-template-columns: 1fr; }

  /* Final CTA */
  .final-cta { padding: 60px 0; }
  .final-float-1, .final-float-2, .final-float-3 { display: none; }
  .btn-final { max-width: 100%; }
  .final-trust { gap: 10px; }
  .final-trust span { font-size: 12px; }

  /* Footer */
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand { grid-column: auto; }
  .footer-links-col { text-align: center; }
  .footer-legal-links { flex-direction: column; gap: 4px; }
  .link-separator { display: none; }

  /* Popup */
  .purchase-popup { left: 12px; right: 12px; max-width: calc(100% - 24px); }
}

@media (max-width: 480px) {
  .hero-product-img { width: 220px; }
  .countdown-timer { padding: 10px 16px; }
  .time-block span { font-size: 32px; }
  .science-accordion, .faq-list, .accordion { text-align: left; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}