/* ===== PotentStream™ — Medical Professional Theme ===== */
/* Colors: Deep Navy #0A1628, Medical Blue #1E6FD9, Sky Blue #4DA3FF, Teal Accent #0EA5A0, Gold Trust #D4A72C */

:root {
  --navy: #0A1628;
  --navy-light: #122240;
  --blue: #1E6FD9;
  --blue-bright: #4DA3FF;
  --teal: #0EA5A0;
  --teal-light: #14B8B3;
  --gold: #D4A72C;
  --gold-light: #F0C850;
  --white: #FFFFFF;
  --off-white: #F4F7FB;
  --gray-100: #E8EDF5;
  --gray-200: #CDD5E1;
  --gray-300: #9BA5B7;
  --gray-500: #64748B;
  --gray-700: #3B4559;
  --gray-900: #1A2332;
  --success: #16A34A;
  --danger: #DC2626;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 1px 3px rgba(10,22,40,.08);
  --shadow-md: 0 4px 14px rgba(10,22,40,.1);
  --shadow-lg: 0 10px 30px rgba(10,22,40,.14);
  --shadow-xl: 0 20px 50px rgba(10,22,40,.18);
  --transition: .3s cubic-bezier(.4,0,.2,1);
  --font-display: 'Libre Baskerville', 'Georgia', serif;
  --font-body: 'DM Sans', 'Helvetica Neue', 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(--gray-900);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; font-family: inherit; }

/* === UTILITY === */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }
.section-pad { padding: 60px 0; }
.text-center { text-align: center; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* Headings */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.25; color: var(--navy); }
h1 { font-size: 1.625rem; margin-bottom: 16px; }
h2 { font-size: 1.375rem; margin-bottom: 14px; }
h3 { font-size: 1.125rem; margin-bottom: 10px; }
p { margin-bottom: 14px; color: var(--gray-700); }

/* CTA Buttons */
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  color: var(--white); font-weight: 700; font-size: 1rem;
  padding: 16px 32px; border-radius: var(--radius-md);
  min-height: 52px; width: 100%;
  box-shadow: 0 4px 16px rgba(14,165,160,.35);
  transition: var(--transition);
  position: relative; overflow: hidden;
  text-transform: uppercase; letter-spacing: .5px;
}
.btn-primary::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.18), transparent);
  opacity: 0; transition: var(--transition);
}
.btn-primary:hover::after, .btn-primary:active::after { opacity: 1; }
.btn-primary:active { transform: scale(.98); }

.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; color: var(--blue);
  border: 2px solid var(--blue); font-weight: 700; font-size: .9rem;
  padding: 12px 24px; border-radius: var(--radius-md);
  min-height: 48px; transition: var(--transition);
}
.btn-secondary:hover { background: var(--blue); color: var(--white); }

/* Section accent line */
.section-tag {
  display: inline-block; font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--teal); margin-bottom: 10px;
  position: relative; padding-left: 30px;
}
.section-tag::before {
  content: ''; position: absolute; left: 0; top: 50%;
  width: 20px; height: 2px; background: var(--teal); transform: translateY(-50%);
}

/* Fade-in on scroll */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: 0s !important; transition-duration: 0s !important; }
}

/* ============================
   1. NAVIGATION
   ============================ */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(255,255,255,.92); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-100);
  transition: var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-logo {
  font-family: var(--font-display); font-size: 1.15rem; font-weight: 700;
  color: var(--navy);
}
.nav-logo span { color: var(--teal); }
.nav-links { display: none; }
.nav-cta-desk { display: none; }
.hamburger {
  width: 44px; height: 44px; display: flex; align-items: center; justify-content: center;
  background: none; position: relative;
}
.hamburger span {
  display: block; width: 22px; height: 2px; background: var(--navy);
  border-radius: 2px; transition: var(--transition); position: absolute;
}
.hamburger span:nth-child(1) { transform: translateY(-7px); }
.hamburger span:nth-child(3) { transform: translateY(7px); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  position: fixed; top: 64px; right: -100%; width: 80%; max-width: 320px;
  height: calc(100vh - 64px); background: var(--white);
  box-shadow: -8px 0 30px rgba(10,22,40,.12);
  transition: right .35s cubic-bezier(.4,0,.2,1);
  padding: 30px 24px; z-index: 999;
  display: flex; flex-direction: column; gap: 8px;
}
.mobile-menu.open { right: 0; }
.mobile-menu a {
  display: block; padding: 14px 0; font-size: 1rem; font-weight: 600;
  color: var(--gray-700); border-bottom: 1px solid var(--gray-100);
  transition: var(--transition);
}
.mobile-menu a:hover { color: var(--teal); }
.mobile-menu .btn-primary { margin-top: 20px; text-align: center; }
.menu-overlay {
  position: fixed; inset: 0; background: rgba(10,22,40,.4);
  z-index: 998; opacity: 0; pointer-events: none; transition: opacity .3s ease;
}
.menu-overlay.show { opacity: 1; pointer-events: auto; }

/* ============================
   2. HERO
   ============================ */
.hero {
  padding-top: 84px; padding-bottom: 40px;
  background: linear-gradient(175deg, var(--off-white) 0%, var(--white) 60%, rgba(14,165,160,.04) 100%);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ''; position: absolute; top: -50%; right: -30%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(30,111,217,.06), transparent 70%);
  pointer-events: none;
}
.hero-grid { display: flex; flex-direction: column; gap: 30px; align-items: center; }
.hero-image {
  position: relative; text-align: center;
  animation: heroFloat 4s ease-in-out infinite;
}
@keyframes heroFloat { 0%,100%{ transform: translateY(0); } 50%{ transform: translateY(-12px); } }
.hero-image img { max-width: 280px; margin: 0 auto; filter: drop-shadow(0 20px 40px rgba(10,22,40,.18)); }
.hero-image .glow {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  width: 260px; height: 260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,160,.15), transparent 70%);
  z-index: -1; animation: glowPulse 3s ease-in-out infinite;
}
@keyframes glowPulse { 0%,100%{ transform: translate(-50%,-50%) scale(1); opacity:.7; } 50%{ transform: translate(-50%,-50%) scale(1.15); opacity:1; } }
.hero-content {}
.hero-content h1 { color: var(--navy); }
.hero-content h1 em { font-style: normal; color: var(--teal); }
.hero-content .hero-desc { font-size: .95rem; color: var(--gray-700); margin-bottom: 20px; }
.hero-benefits {
  margin-bottom: 24px; display: flex; flex-direction: column; gap: 10px;
}
.hero-benefits li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: .95rem; color: var(--gray-700);
}
.hero-benefits li .emoji { font-size: 1.2rem; flex-shrink: 0; line-height: 1.5; }

/* ============================
   3. WHY CHOOSE US
   ============================ */
.why-choose { background: var(--off-white); }
.trust-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
  margin-top: 30px;
}
.trust-card {
  background: var(--white); border-radius: var(--radius-md);
  padding: 20px 16px; text-align: center;
  box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100);
  transition: var(--transition);
}
.trust-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.trust-card img { width: 56px; height: 56px; object-fit: contain; margin: 0 auto 12px; }
.trust-card h3 { font-size: .95rem; margin-bottom: 6px; }
.trust-card p { font-size: .82rem; color: var(--gray-500); margin-bottom: 0; }

/* ============================
   4. FORMULA STANDS OUT
   ============================ */
.formula-section { background: var(--white); }
.formula-grid {
  display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 30px;
}
.formula-card {
  background: var(--off-white); border-radius: var(--radius-md);
  padding: 24px 20px; border-left: 4px solid var(--teal);
  transition: var(--transition);
}
.formula-card:hover { box-shadow: var(--shadow-md); border-left-color: var(--blue); }
.formula-card h3 { color: var(--navy); font-size: 1.05rem; display: flex; align-items: center; gap: 10px; }
.formula-card h3 .num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--teal); color: var(--white); font-family: var(--font-body);
  font-size: .85rem; font-weight: 700; flex-shrink: 0;
}
.formula-card p { font-size: .9rem; margin-bottom: 0; }

/* ============================
   5. WHAT IS
   ============================ */
.what-is { background: var(--off-white); }
.what-is-grid {
  display: flex; flex-direction: column; gap: 30px; align-items: center;
}
.what-is-img img {
  border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  max-width: 320px; margin: 0 auto;
}
.what-is-text p { font-size: .95rem; }

/* ============================
   6. HOW IT WORKS
   ============================ */
.how-works { background: linear-gradient(175deg, var(--navy) 0%, var(--navy-light) 100%); color: var(--white); }
.how-works h2, .how-works h3 { color: var(--white); }
.how-works p { color: rgba(255,255,255,.78); }
.how-works .section-tag { color: var(--teal-light); }
.how-works .section-tag::before { background: var(--teal-light); }
.how-works-desc { max-width: 700px; margin: 0 auto 30px; font-size: .95rem; }
.steps-list { display: flex; flex-direction: column; gap: 0; position: relative; }
.steps-list::before {
  content: ''; position: absolute; left: 22px; top: 30px;
  bottom: 30px; width: 2px; background: rgba(255,255,255,.12);
}
.step-item {
  display: flex; gap: 20px; padding: 20px 0; position: relative;
}
.step-num {
  width: 44px; height: 44px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .95rem;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  color: var(--white); box-shadow: 0 0 20px rgba(14,165,160,.3);
  z-index: 1;
}
.step-item.visible .step-num { animation: stepPop .5s ease; }
@keyframes stepPop { 0%{ transform: scale(0); } 60%{ transform: scale(1.15); } 100%{ transform: scale(1); } }
.step-text h3 { font-size: 1rem; margin-bottom: 4px; }
.step-text p { font-size: .88rem; margin-bottom: 0; }

/* ============================
   7. REVIEWS
   ============================ */
.reviews { background: var(--off-white); }
.review-grid {
  display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 30px;
}
.review-card {
  background: var(--white); border-radius: var(--radius-md);
  padding: 24px 20px; box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-100); transition: var(--transition);
}
.review-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.review-header { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.review-avatar {
  width: 54px; height: 54px; border-radius: 50%; overflow: hidden;
  border: 3px solid var(--teal); flex-shrink: 0;
}
.review-avatar img { width: 100%; height: 100%; object-fit: cover; }
.review-name { font-weight: 700; color: var(--navy); font-size: .95rem; }
.review-loc { font-size: .8rem; color: var(--gray-500); }
.review-stars { display: flex; gap: 2px; margin-bottom: 12px; }
.review-stars svg { width: 18px; height: 18px; fill: var(--gold); }
.review-text { font-size: .9rem; color: var(--gray-700); line-height: 1.65; margin-bottom: 0; }

/* animated entrance */
.review-card.visible { animation: reviewSlide .6s ease forwards; }
@keyframes reviewSlide { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }

/* ============================
   8. RESEARCH BACKED
   ============================ */
.research-backed { background: var(--white); }
.research-content { max-width: 800px; margin: 0 auto; }
.research-content h3 { margin-top: 24px; }
.research-content ul { margin: 14px 0 14px 6px; }
.research-content ul li {
  position: relative; padding-left: 22px; margin-bottom: 8px;
  font-size: .92rem; color: var(--gray-700);
}
.research-content ul li::before {
  content: '✓'; position: absolute; left: 0; color: var(--teal); font-weight: 700;
}

/* ============================
   8b. PRICING
   ============================ */
.pricing {
  background: linear-gradient(175deg, var(--navy) 0%, #0C1D36 100%);
  color: var(--white); position: relative; overflow: hidden;
}
.pricing::before {
  content:''; position: absolute; top: -100px; right: -100px;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,160,.08), transparent 70%);
}
.pricing h2, .pricing h3 { color: var(--white); }
.pricing p { color: rgba(255,255,255,.75); }
.pricing .section-tag { color: var(--gold); }
.pricing .section-tag::before { background: var(--gold); }

/* Countdown */
.countdown-wrap { margin: 20px 0 30px; text-align: center; }
.countdown {
  display: inline-flex; gap: 8px; background: rgba(220,38,38,.12);
  border: 1px solid rgba(220,38,38,.4); border-radius: var(--radius-md);
  padding: 12px 24px;
}
.cd-block { text-align: center; }
.cd-num {
  font-size: 2rem; font-weight: 800; font-family: var(--font-body);
  color: var(--danger); line-height: 1;
}
.cd-label { font-size: .65rem; text-transform: uppercase; letter-spacing: 1px; color: rgba(255,255,255,.6); }
.cd-sep { font-size: 1.8rem; color: rgba(255,255,255,.3); line-height: 1; }

/* Pricing grid */
.pricing-grid {
  display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 10px;
}
.price-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg); padding: 28px 20px; text-align: center;
  position: relative; overflow: hidden; transition: var(--transition);
}
.price-card.popular {
  background: rgba(14,165,160,.1); border-color: var(--teal);
  transform: scale(1.02);
}
.price-card.popular::before {
  content: 'MOST POPULAR'; position: absolute; top: 0; left: 0; right: 0;
  background: var(--teal); color: var(--white); font-size: .7rem; font-weight: 700;
  letter-spacing: 1.5px; padding: 6px 0; text-transform: uppercase;
}
.price-card.popular { padding-top: 48px; }
.price-label {
  font-size: .75rem; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--gray-300); margin-bottom: 6px;
}
.price-bottles { font-size: 1.3rem; font-weight: 800; color: var(--white); }
.price-supply { font-size: .82rem; color: var(--gray-300); margin-bottom: 14px; }
.price-card img { max-width: 120px; margin: 0 auto 14px; }
.price-amount {
  font-size: 2.5rem; font-weight: 800; color: var(--white); line-height: 1;
}
.price-amount small { font-size: .9rem; font-weight: 400; color: var(--gray-300); }
.price-old {
  font-size: .95rem; color: var(--gray-300); text-decoration: line-through;
  margin-bottom: 4px;
}
.price-total { font-size: .85rem; color: var(--gray-300); margin-bottom: 16px; }
.price-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 16px; }
.price-badge {
  display: inline-block; padding: 4px 12px; border-radius: 20px;
  font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .5px;
}
.badge-green { background: rgba(22,163,74,.15); color: #4ade80; }
.badge-gold { background: rgba(212,167,44,.15); color: var(--gold-light); }
.price-card .btn-primary { font-size: .9rem; margin-bottom: 12px; }
.payment-logos { display: flex; justify-content: center; gap: 6px; opacity: .6; }
.payment-logos span { font-size: .65rem; color: var(--gray-300); }

/* ============================
   9. INGREDIENTS
   ============================ */
.ingredients { background: var(--off-white); }
.ingr-grid {
  display: grid; grid-template-columns: 1fr; gap: 16px; margin-top: 30px;
}
.ingr-card {
  background: var(--white); border-radius: var(--radius-md);
  padding: 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--gray-100);
  cursor: pointer; transition: var(--transition);
}
.ingr-card:hover { box-shadow: var(--shadow-md); }
.ingr-header {
  display: flex; align-items: center; justify-content: space-between;
}
.ingr-header h3 { margin-bottom: 0; font-size: 1rem; color: var(--navy); }
.ingr-toggle {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--off-white); display: flex; align-items: center; justify-content: center;
  transition: var(--transition); font-size: 1.2rem; color: var(--gray-500);
}
.ingr-card.open .ingr-toggle { transform: rotate(45deg); color: var(--teal); }
.ingr-body { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.ingr-body-inner { padding-top: 14px; font-size: .9rem; color: var(--gray-700); }

/* ============================
   10. SCIENTIFIC EVIDENCE
   ============================ */
.science { background: var(--white); }
.science-content { max-width: 800px; margin: 0 auto; }
.science-content p { font-size: .93rem; }
.science-content a { color: var(--gray-700); text-decoration: none; border-bottom: none; }
.science-content a:hover { color: var(--blue); }
.science-content .collapse-btn {
  display: flex; align-items: center; gap: 8px;
  background: var(--off-white); border: 1px solid var(--gray-200);
  padding: 12px 18px; border-radius: var(--radius-md);
  font-weight: 600; color: var(--navy); font-size: .95rem;
  width: 100%; justify-content: space-between; min-height: 48px;
  margin-bottom: 8px; transition: var(--transition);
}
.science-content .collapse-btn:hover { background: var(--gray-100); }
.science-content .collapse-body { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.science-content .collapse-body-inner { padding: 10px 0 20px; }

/* ============================
   11. GUARANTEE
   ============================ */
.guarantee {
  background: linear-gradient(175deg, rgba(14,165,160,.04), var(--off-white));
}
.guarantee-grid {
  display: flex; flex-direction: column; align-items: center; gap: 24px;
}
.guarantee-img img { max-width: 220px; margin: 0 auto; }
.guarantee-text h3 { color: var(--navy); margin-bottom: 8px; }
.guarantee-point {
  display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px;
}
.guarantee-point .gp-icon {
  width: 36px; height: 36px; border-radius: 50%; flex-shrink: 0;
  background: var(--teal); display: flex; align-items: center; justify-content: center;
  color: var(--white); font-size: 1rem;
}
.guarantee-point p { font-size: .92rem; margin-bottom: 0; }
.guarantee-point strong { color: var(--navy); }

/* ============================
   12. BENEFITS
   ============================ */
.benefits { background: var(--white); }
.benefits-list { max-width: 800px; margin: 30px auto 0; }
.benefit-item {
  display: flex; align-items: flex-start; gap: 14px; margin-bottom: 20px;
}
.benefit-check {
  width: 28px; height: 28px; border-radius: 50%; flex-shrink: 0;
  background: rgba(14,165,160,.1); display: flex; align-items: center;
  justify-content: center; color: var(--teal); font-size: .85rem; font-weight: 700;
  margin-top: 2px;
}
.benefit-item p { font-size: .93rem; margin-bottom: 0; }

/* ============================
   13. PROS & CONS
   ============================ */
.pros-cons { background: var(--off-white); }
.pc-grid {
  display: grid; grid-template-columns: 1fr; gap: 20px; margin-top: 30px;
}
.pc-col { background: var(--white); border-radius: var(--radius-md); padding: 24px 20px; box-shadow: var(--shadow-sm); }
.pc-col h3 { display: flex; align-items: center; gap: 8px; }
.pc-col li {
  position: relative; padding-left: 24px; padding-bottom: 10px;
  font-size: .92rem; color: var(--gray-700);
}
.pc-col li::before {
  position: absolute; left: 0; font-weight: 700;
}
.pros-list li::before { content: '✓'; color: var(--success); }
.cons-list li::before { content: '✗'; color: var(--danger); }

/* ============================
   15. WHERE TO BUY
   ============================ */
.where-buy { background: var(--white); }

/* ============================
   16. ORDER STEPS
   ============================ */
.order-steps { background: var(--off-white); }
.order-steps-grid {
  display: flex; flex-direction: column; gap: 30px; align-items: center;
}
.order-steps-img img { max-width: 360px; margin: 0 auto; border-radius: var(--radius-md); box-shadow: var(--shadow-md); }

/* ============================
   17. FAQ
   ============================ */
.faq { background: var(--white); }
.faq-list { max-width: 800px; margin: 30px auto 0; }
.faq-item {
  border: 1px solid var(--gray-100); border-radius: var(--radius-md);
  margin-bottom: 12px; overflow: hidden; transition: var(--transition);
}
.faq-item:hover { border-color: var(--gray-200); }
.faq-q {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; background: var(--white); cursor: pointer;
  font-weight: 600; font-size: .95rem; color: var(--navy);
  min-height: 52px; transition: var(--transition);
}
.faq-q:hover { background: var(--off-white); }
.faq-q .faq-icon {
  width: 28px; height: 28px; border-radius: 50%; background: var(--off-white);
  display: flex; align-items: center; justify-content: center;
  transition: transform .3s ease; flex-shrink: 0; font-size: 1rem; color: var(--gray-500);
}
.faq-item.open .faq-icon { transform: rotate(45deg); color: var(--teal); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a-inner { padding: 0 20px 20px; font-size: .9rem; color: var(--gray-700); }

/* ============================
   18. FINAL CTA
   ============================ */
.final-cta {
  background: linear-gradient(175deg, var(--navy) 0%, #0C1D36 100%);
  color: var(--white); text-align: center; position: relative; overflow: hidden;
}
.final-cta::before {
  content:''; position: absolute; bottom: -60px; left: 50%;
  transform: translateX(-50%);
  width: 500px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,160,.1), transparent 70%);
}
.final-cta h2 { color: var(--white); }
.final-cta .old-price {
  font-size: 1.2rem; text-decoration: line-through; color: var(--gray-300);
}
.final-cta .new-price {
  font-size: 2.2rem; font-weight: 800; color: var(--gold-light);
  margin-bottom: 20px;
}
.final-cta img {
  max-width: 260px; margin: 0 auto 24px;
  animation: heroFloat 4s ease-in-out infinite;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,.3));
}
.final-cta .btn-primary { max-width: 420px; margin: 0 auto; }

/* ============================
   19. FOOTER
   ============================ */
.site-footer {
  background: var(--gray-900); color: rgba(255,255,255,.55);
  padding: 40px 0 24px; font-size: .82rem;
}
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-bottom: 20px; }
.footer-links a { color: rgba(255,255,255,.7); transition: var(--transition); }
.footer-links a:hover { color: var(--teal-light); }
.footer-social { display: flex; justify-content: center; gap: 14px; margin-bottom: 20px; }
.footer-social a {
  width: 40px; height: 40px; border-radius: 50%;
  background: rgba(255,255,255,.08); display: flex;
  align-items: center; justify-content: center;
  color: rgba(255,255,255,.6); font-size: 1rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--teal); color: var(--white); }
.footer-disclaimer {
  max-width: 800px; margin: 20px auto 0; font-size: .72rem;
  line-height: 1.6; color: rgba(255,255,255,.4); text-align: center;
}

/* ============================
   PURCHASE POPUP
   ============================ */
.purchase-popup {
  position: fixed; bottom: 20px; left: 20px; z-index: 900;
  background: var(--white); border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl); padding: 14px 18px;
  display: flex; align-items: center; gap: 12px;
  max-width: 320px; transform: translateX(-120%);
  transition: transform .5s cubic-bezier(.4,0,.2,1);
  border-left: 4px solid var(--teal);
}
.purchase-popup.show { transform: translateX(0); }
.purchase-popup .pp-icon { font-size: 1.3rem; }
.purchase-popup .pp-text { font-size: .82rem; color: var(--gray-700); line-height: 1.4; }
.purchase-popup .pp-name { font-weight: 700; color: var(--navy); }
.purchase-popup .pp-time { font-size: .72rem; color: var(--gray-500); }

/* ============================
   SCROLL TO TOP
   ============================ */
.scroll-top {
  position: fixed; bottom: 24px; right: 24px; z-index: 800;
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--teal); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 16px rgba(14,165,160,.4);
  font-size: 1.3rem; opacity: 0; pointer-events: none;
  transition: var(--transition);
}
.scroll-top.show { opacity: 1; pointer-events: auto; }
.scroll-top:active { transform: scale(.92); }

/* ============================
   TABLET+ BREAKPOINTS
   ============================ */
@media (min-width: 576px) {
  .container { padding-left: 28px; padding-right: 28px; }
  .review-grid { grid-template-columns: repeat(2, 1fr); }
  .pc-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  h1 { font-size: 2.1rem; }
  h2 { font-size: 1.65rem; }
  .section-pad { padding: 80px 0; }
  .hero { padding-top: 100px; padding-bottom: 60px; }
  .hero-grid { flex-direction: row; gap: 40px; }
  .hero-image img { max-width: 340px; }
  .hero-image .glow { width: 320px; height: 320px; }
  .trust-grid { grid-template-columns: repeat(4, 1fr); }
  .formula-grid { grid-template-columns: repeat(2, 1fr); }
  .what-is-grid { flex-direction: row; }
  .what-is-img img { max-width: 380px; }
  .review-grid { grid-template-columns: repeat(3, 1fr); }
  .ingr-grid { grid-template-columns: repeat(2, 1fr); }
  .guarantee-grid { flex-direction: row; align-items: flex-start; }
  .guarantee-img img { max-width: 240px; }
  .order-steps-grid { flex-direction: row; align-items: center; }
  .order-steps-img { flex-shrink: 0; }

  /* Nav desktop */
  .hamburger { display: none; }
  .mobile-menu { display: none !important; }
  .menu-overlay { display: none !important; }
  .nav-links {
    display: flex; align-items: center; gap: 28px;
  }
  .nav-links a {
    font-size: .88rem; font-weight: 600; color: var(--gray-700);
    position: relative; transition: var(--transition);
  }
  .nav-links a::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 2px; background: var(--teal); transition: var(--transition);
  }
  .nav-links a:hover { color: var(--teal); }
  .nav-links a:hover::after { width: 100%; }
  .nav-cta-desk { display: inline-flex; }
  .btn-primary { width: auto; }
}

@media (min-width: 1024px) {
  h1 { font-size: 2.6rem; }
  h2 { font-size: 1.9rem; }
  .section-pad { padding: 100px 0; }
  .hero { padding-top: 120px; padding-bottom: 80px; }
  .hero-image img { max-width: 400px; }
  .hero-image .glow { width: 380px; height: 380px; }
  .formula-grid { grid-template-columns: repeat(3, 1fr); }
  .pricing-grid { grid-template-columns: repeat(3, 1fr); }
  .price-card.popular { transform: scale(1.06); }
  .ingr-grid { grid-template-columns: repeat(3, 1fr); }
  .final-cta img { max-width: 320px; }
  .final-cta .new-price { font-size: 2.8rem; }
}