/* ============================================
   BRAINVEX - styles.css
   Design: Medical Professional + Premium Feel
   Colors: Deep Navy, Electric Blue, Gold accent
   Fonts: Montserrat (headings), Open Sans (body)
============================================ */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;800;900&family=Open+Sans:wght@400;500;600&display=swap');

/* ===== CSS VARIABLES ===== */
:root {
  --primary: #1a2980;
  --primary-light: #26d0ce;
  --secondary: #0f4c75;
  --accent: #d4af37;
  --accent-light: #f5d76e;
  --danger: #e74c3c;
  --success: #27ae60;
  --white: #ffffff;
  --off-white: #f8f9ff;
  --light-gray: #eef1f8;
  --text-dark: #1a1a2e;
  --text-gray: #555577;
  --gradient-hero: linear-gradient(135deg, #1a2980 0%, #0f4c75 50%, #1a2980 100%);
  --gradient-btn: linear-gradient(135deg, #d4af37 0%, #f5d76e 50%, #d4af37 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #f0f4ff 100%);
  --shadow-sm: 0 2px 10px rgba(26,41,128,0.1);
  --shadow-md: 0 8px 30px rgba(26,41,128,0.15);
  --shadow-lg: 0 20px 60px rgba(26,41,128,0.2);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --transition: all 0.3s ease;
}

/* ===== 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: 'Open Sans', sans-serif;
  color: var(--text-dark);
  background: var(--white);
  overflow-x: hidden;
  line-height: 1.7;
}

h1, h2, h3, h4, h5 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

input, select, textarea { font-size: 16px; }

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

/* ===== SECTIONS ===== */
section { padding: 60px 0; }

/* ===== SECTION TITLES ===== */
.section-title {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
  color: var(--primary);
}
.section-subtitle {
  font-size: clamp(15px, 2vw, 18px);
  text-align: center;
  color: var(--text-gray);
  max-width: 650px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 14px 32px;
  border: none;
  border-radius: 50px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background 0.3s;
}
.btn:hover::after { background: rgba(255,255,255,0.15); }
.btn:hover { transform: scale(1.05); box-shadow: 0 10px 30px rgba(212,175,55,0.5); }
.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--gradient-btn);
  color: #1a1a00;
  box-shadow: 0 4px 20px rgba(212,175,55,0.4);
  font-size: 18px;
  padding: 16px 40px;
}
.btn-outline {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
}
.btn-full { width: 100%; }

/* ===== BADGE ===== */
.badge {
  display: inline-block;
  padding: 5px 14px;
  background: var(--accent);
  color: #000;
  border-radius: 50px;
  font-size: 12px;
  font-weight: 700;
  font-family: 'Montserrat', sans-serif;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.badge-green { background: var(--success); color: #fff; }
.badge-red { background: var(--danger); color: #fff; }

/* ============================================
   NAVIGATION
============================================ */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: transparent;
  transition: background 0.4s, box-shadow 0.4s, padding 0.3s;
  padding: 20px 0;
}
#navbar.scrolled {
  background: rgba(26,41,128,0.97);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 30px rgba(26,41,128,0.3);
  padding: 12px 0;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.nav-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 26px;
  color: var(--white);
  letter-spacing: -1px;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: rgba(255,255,255,0.85);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

.nav-cta {
  background: var(--gradient-btn);
  color: #1a1a00 !important;
  padding: 10px 24px;
  border-radius: 50px;
  font-weight: 700 !important;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.nav-cta:hover { transform: scale(1.05); box-shadow: 0 4px 20px rgba(212,175,55,0.5); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  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); }

.mobile-menu {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(26,41,128,0.98);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  transform: translateY(-20px);
  transition: opacity 0.3s, transform 0.3s;
}
.mobile-menu.active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}
.mobile-menu a {
  color: var(--white);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 1px;
  transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--accent); }
.mobile-menu .btn { font-size: 18px; padding: 14px 40px; }

/* ============================================
   HERO SECTION
============================================ */
#hero {
  min-height: 100vh;
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  padding-top: 100px;
  padding-bottom: 60px;
  position: relative;
  overflow: hidden;
}
#hero::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(38,208,206,0.15) 0%, transparent 70%);
  top: -150px; right: -100px;
  animation: pulse-bg 6s ease-in-out infinite;
}
#hero::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,175,55,0.1) 0%, transparent 70%);
  bottom: -100px; left: -50px;
  animation: pulse-bg 8s ease-in-out infinite reverse;
}
@keyframes pulse-bg {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 1; }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-image-wrap {
  position: relative;
  display: flex;
  justify-content: center;
}
.hero-bottle {
  width: 100%;
  max-width: 420px;
  animation: floatBottle 4s ease-in-out infinite;
  filter: drop-shadow(0 30px 60px rgba(0,0,0,0.4));
}
@keyframes floatBottle {
  0%, 100% { transform: translateY(0) rotate(-2deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
}
.hero-glow {
  position: absolute;
  bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 300px; height: 80px;
  background: radial-gradient(ellipse, rgba(38,208,206,0.4) 0%, transparent 70%);
  border-radius: 50%;
  animation: floatBottle 4s ease-in-out infinite;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px;
  padding: 8px 20px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 13px;
  color: var(--accent-light);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  animation: blink 1.5s infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.2; } }

.hero-content h1 {
  font-size: clamp(28px, 4.5vw, 52px);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 20px;
  line-height: 1.1;
}
.hero-content h1 span { color: var(--accent); }

.hero-desc {
  color: rgba(255,255,255,0.8);
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-checks {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 36px;
}
.hero-checks li {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,0.9);
  font-size: 15px;
  font-weight: 500;
}
.hero-checks li::before {
  content: '✓';
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--accent);
  color: #000;
  font-weight: 900;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-cta-wrap { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.hero-cta-wrap .btn-primary { width: 100%; max-width: 380px; font-size: 20px; }
.hero-trust {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.6);
  font-size: 13px;
}
.hero-trust .stars { color: var(--accent); letter-spacing: 2px; }

/* ============================================
   WHY CHOOSE US
============================================ */
#why-choose {
  background: var(--off-white);
}
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(26,41,128,0.07);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(40px);
}
.why-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s, scale 0.3s;
}
.why-card:hover {
  transform: translateY(-8px) rotate(1deg) scale(1.03);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}
.why-card img {
  width: 80px; height: 80px;
  object-fit: contain;
  margin: 0 auto 20px;
}
.why-card h3 {
  font-size: 15px;
  font-weight: 800;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}
.why-card p { font-size: 14px; color: var(--text-gray); line-height: 1.6; }

/* ============================================
   WHAT IS BRAINVEX
============================================ */
#what-is {
  background: var(--white);
}
.what-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.what-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.what-image img { width: 100%; object-fit: cover; border-radius: var(--radius-lg); }
.what-content h2 { font-size: clamp(26px, 3.5vw, 38px); color: var(--primary); margin-bottom: 20px; }
.what-content p { color: var(--text-gray); margin-bottom: 16px; font-size: 16px; line-height: 1.8; }
.what-content strong { color: var(--text-dark); font-weight: 600; }

/* ============================================
   HOW IT WORKS
============================================ */
#how-it-works { background: var(--off-white); }
.accordion-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.accordion-item {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid rgba(26,41,128,0.1);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  min-height: 64px;
  transition: background 0.2s;
}
.accordion-header:hover { background: var(--off-white); }
.accordion-title {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 16px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 12px;
}
.accordion-title .icon {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.accordion-chevron {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--light-gray);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.3s;
  flex-shrink: 0;
  font-size: 12px;
  color: var(--primary);
}
.accordion-item.open .accordion-chevron { transform: rotate(180deg); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}
.accordion-body-inner {
  padding: 0 24px 24px;
  color: var(--text-gray);
  font-size: 15px;
  line-height: 1.8;
}

/* ============================================
   REVIEWS
============================================ */
#reviews { background: var(--white); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.review-card {
  background: var(--gradient-card);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(26,41,128,0.08);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(30px);
}
.review-card.visible { opacity: 1; transform: translateY(0); transition: opacity 0.6s ease, transform 0.6s ease; }
.review-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.review-top { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.review-photo {
  width: 60px; height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
}
.review-name { font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 16px; }
.review-location { font-size: 13px; color: var(--text-gray); }
.stars { color: #f39c12; font-size: 18px; letter-spacing: 2px; margin-bottom: 12px; }
.review-text { font-size: 15px; color: var(--text-gray); line-height: 1.7; font-style: italic; }
.review-verified { display: inline-flex; align-items: center; gap: 6px; margin-top: 12px; font-size: 12px; color: var(--success); font-weight: 600; }

/* ============================================
   PRICING SECTION
============================================ */
.pricing-section { background: var(--primary); position: relative; overflow: hidden; }
.pricing-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.pricing-section .section-title { color: var(--white); }
.pricing-section .section-subtitle { color: rgba(255,255,255,0.7); }

/* Countdown */
.countdown-wrap {
  text-align: center;
  margin-bottom: 48px;
}
.countdown-label {
  color: rgba(255,255,255,0.7);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.countdown-timer {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  padding: 16px 32px;
}
.countdown-block {
  text-align: center;
  min-width: 70px;
}
.countdown-num {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: clamp(32px, 6vw, 52px);
  color: var(--accent);
  line-height: 1;
  display: block;
}
.countdown-unit {
  font-size: 11px;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 1px;
  display: block;
  margin-top: 4px;
}
.countdown-sep {
  font-size: 36px;
  font-weight: 900;
  color: rgba(255,255,255,0.4);
  line-height: 1;
  margin-bottom: 10px;
}

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

.price-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.price-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.price-card.popular {
  background: linear-gradient(145deg, #fff8e1, #fffbf0);
  border: 3px solid var(--accent);
  transform: scale(1.03);
}
.price-card.popular:hover { transform: scale(1.03) translateY(-8px); }
.popular-badge {
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-btn);
  color: #000;
  padding: 6px 24px;
  border-radius: 50px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  white-space: nowrap;
}
.price-label { font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 14px; color: var(--text-gray); text-transform: uppercase; letter-spacing: 1px; }
.price-bottles { font-family: 'Montserrat', sans-serif; font-weight: 900; font-size: 28px; color: var(--primary); }
.price-days { font-size: 13px; color: var(--text-gray); }
.price-img {
  width: 120px;
  margin: 0 auto;
  filter: drop-shadow(0 10px 20px rgba(26,41,128,0.2));
}
.price-per {
  font-family: 'Montserrat', sans-serif;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  color: var(--primary);
}
.price-per span { font-size: 18px; font-weight: 600; }
.price-total { font-size: 14px; color: var(--text-gray); }
.price-total s { color: var(--danger); }
.price-total strong { color: var(--success); font-weight: 700; }
.price-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.price-badges .badge { font-size: 11px; padding: 4px 12px; }
.price-cards-img { width: 100%; max-width: 180px; margin: 8px auto 0; }

.pricing-star-row {
  text-align: center;
  margin-top: 40px;
}
.star-img { max-width: 220px; margin: 0 auto; }
.pricing-note { margin-top: 12px; color: rgba(255,255,255,0.5); font-size: 13px; }

/* ============================================
   BONUS
============================================ */
#bonus { background: var(--off-white); }
.bonus-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}
.bonus-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 2px solid rgba(212,175,55,0.3);
  transition: var(--transition);
}
.bonus-card:hover { transform: translateY(-6px); border-color: var(--accent); }
.bonus-num {
  display: inline-block;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--gradient-btn);
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 18px;
  color: #000;
  line-height: 44px;
  margin-bottom: 16px;
}
.bonus-card img { width: 100%; max-width: 200px; margin: 0 auto 20px; border-radius: var(--radius); }
.bonus-card h3 { font-size: 18px; color: var(--primary); margin-bottom: 10px; }
.bonus-card p { font-size: 14px; color: var(--text-gray); line-height: 1.6; }
.bonus-value { font-family: 'Montserrat', sans-serif; font-weight: 700; color: var(--accent); font-size: 14px; margin-top: 10px; }

/* ============================================
   INGREDIENTS
============================================ */
#ingredients { background: var(--white); }
.ingredients-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.ingredient-card {
  background: var(--off-white);
  border-radius: var(--radius);
  padding: 24px 20px;
  border-left: 4px solid var(--primary);
  transition: var(--transition);
}
.ingredient-card:hover { border-color: var(--accent); background: #fff8e1; transform: translateX(4px); }
.ingredient-name { font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 15px; color: var(--primary); margin-bottom: 8px; }
.ingredient-dose { font-size: 12px; color: var(--accent); font-weight: 700; font-family: 'Montserrat', sans-serif; margin-bottom: 8px; }
.ingredient-desc { font-size: 14px; color: var(--text-gray); line-height: 1.6; }

/* ============================================
   SCIENTIFIC EVIDENCE
============================================ */
#science { background: var(--off-white); }
.science-list { max-width: 850px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.science-item {
  background: var(--white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(26,41,128,0.08);
}
.science-item h3 { font-size: 17px; color: var(--primary); margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.science-item h3 .tag {
  font-size: 11px;
  background: var(--light-gray);
  color: var(--text-gray);
  padding: 2px 10px;
  border-radius: 50px;
  font-weight: 600;
}
.science-item p { font-size: 14px; color: var(--text-gray); line-height: 1.7; }
.science-item cite { font-size: 12px; color: var(--primary-light); font-style: italic; display: block; margin-top: 8px; }

/* ============================================
   MONEY BACK GUARANTEE
============================================ */
#guarantee { background: var(--white); }
.guarantee-inner {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 60px;
  align-items: center;
}
.guarantee-img-wrap { flex-shrink: 0; }
.guarantee-img-wrap img { width: 200px; filter: drop-shadow(0 10px 30px rgba(26,41,128,0.2)); }
.guarantee-content h2 { font-size: clamp(24px, 3.5vw, 36px); color: var(--primary); margin-bottom: 20px; }
.guarantee-points { display: flex; flex-direction: column; gap: 20px; margin-top: 24px; }
.gp-item { display: flex; align-items: flex-start; gap: 16px; }
.gp-icon { width: 44px; height: 44px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-light)); display: flex; align-items: center; justify-content: center; font-size: 18px; flex-shrink: 0; }
.gp-item h4 { font-size: 16px; color: var(--primary); margin-bottom: 6px; }
.gp-item p { font-size: 14px; color: var(--text-gray); line-height: 1.6; }

/* ============================================
   BENEFITS
============================================ */
#benefits { background: var(--off-white); }
.benefits-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.benefits-list { display: flex; flex-direction: column; gap: 16px; }
.benefit-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 16px 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.benefit-item:hover { transform: translateX(8px); border-left: 4px solid var(--accent); }
.benefit-icon { font-size: 22px; flex-shrink: 0; }
.benefit-text { font-weight: 600; font-size: 15px; color: var(--text-dark); }
.benefits-image img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }

/* ============================================
   FAQ
============================================ */
#faq { background: var(--white); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  border: 1px solid rgba(26,41,128,0.12);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 16px;
  color: var(--primary);
  min-height: 60px;
  transition: background 0.2s;
}
.faq-q:hover { background: var(--off-white); }
.faq-chevron { font-size: 12px; transition: transform 0.3s; flex-shrink: 0; color: var(--primary); }
.faq-item.open .faq-chevron { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-a-inner { padding: 0 24px 20px; color: var(--text-gray); font-size: 15px; line-height: 1.8; }

/* ============================================
   FINAL CTA
============================================ */
#final-cta {
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}
#final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none'%3E%3Ccircle cx='40' cy='40' r='1' fill='rgba(255,255,255,0.05)'/%3E%3C/g%3E%3C/svg%3E");
}
.final-cta-inner { position: relative; z-index: 1; }
.final-cta-inner h2 { color: var(--white); font-size: clamp(26px, 4vw, 44px); font-weight: 900; margin-bottom: 20px; }
.final-price { margin-bottom: 32px; }
.final-old { font-size: 20px; color: rgba(255,255,255,0.5); text-decoration: line-through; margin-bottom: 8px; }
.final-new { font-size: clamp(36px, 6vw, 60px); font-family: 'Montserrat', sans-serif; font-weight: 900; color: var(--accent); }
.final-cta-img { max-width: 300px; margin: 0 auto 32px; animation: floatBottle 4s ease-in-out infinite; filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3)); }

/* ============================================
   FOOTER
============================================ */
footer {
  background: #0d1b3e;
  color: rgba(255,255,255,0.6);
  padding: 48px 0 24px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand .nav-logo { font-size: 28px; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin-top: 12px; color: rgba(255,255,255,0.5); max-width: 300px; }
.footer-col h4 { font-family: 'Montserrat', sans-serif; font-weight: 700; font-size: 14px; color: var(--white); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14px; color: rgba(255,255,255,0.5); padding: 5px 0; transition: color 0.2s; }
.footer-col a:hover { color: var(--accent); }

.social-links { display: flex; gap: 12px; margin-top: 8px; }
.social-link {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
  text-decoration: none;
}
.social-link:hover { background: var(--accent); color: #000; transform: translateY(-3px); }

.footer-bottom {
  text-align: center;
}
.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 20px;
  margin-bottom: 16px;
}
.footer-legal-links a { font-size: 13px; color: rgba(255,255,255,0.5); transition: color 0.2s; }
.footer-legal-links a:hover { color: var(--accent); }
.link-separator { color: rgba(255,255,255,0.2); }

.footer-disclaimer {
  font-size: 12px;
  color: rgba(255,255,255,0.3);
  max-width: 800px;
  margin: 0 auto 16px;
  line-height: 1.7;
}
.footer-copy { font-size: 13px; }

/* ============================================
   POPUP
============================================ */
#exit-popup {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
#exit-popup.show { display: flex; }
.popup-box {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 480px;
  width: 90%;
  text-align: center;
  position: relative;
  box-shadow: 0 40px 100px rgba(0,0,0,0.3);
  animation: popIn 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes popIn {
  from { transform: scale(0.7); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.popup-close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--light-gray);
  border: none;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  text-decoration: none;
  color: var(--text-dark);
}
.popup-close:hover { background: var(--accent); color: #000; }
.popup-box img { max-width: 160px; margin: 0 auto 20px; }
.popup-box h3 { font-size: 22px; color: var(--primary); margin-bottom: 12px; }
.popup-box p { font-size: 15px; color: var(--text-gray); margin-bottom: 24px; line-height: 1.6; }

/* Mobile popup (banner style) */
@media (max-width: 576px) {
  #exit-popup.show { align-items: flex-end; }
  .popup-box { width: 100%; border-radius: var(--radius-lg) var(--radius-lg) 0 0; padding: 28px 20px; margin: 0; }
}

/* ============================================
   NOTIFICATION TOAST
============================================ */
#purchase-notif {
  position: fixed;
  bottom: 24px; left: 24px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 14px 18px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  z-index: 900;
  transform: translateX(-200%);
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
  max-width: 300px;
  border-left: 4px solid var(--success);
}
#purchase-notif.show { transform: translateX(0); }
.notif-icon { font-size: 22px; }
.notif-text strong { display: block; font-size: 13px; color: var(--text-dark); font-weight: 600; }
.notif-text span { font-size: 12px; color: var(--text-gray); }

@media (max-width: 576px) {
  #purchase-notif { bottom: 80px; left: 12px; right: 12px; max-width: none; }
}

/* ============================================
   SCROLL TO TOP
============================================ */
#scroll-top {
  position: fixed;
  bottom: 28px; right: 24px;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--gradient-btn);
  border: none;
  cursor: pointer;
  font-size: 20px;
  color: #000;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
#scroll-top.visible { opacity: 1; transform: translateY(0); }
#scroll-top:hover { transform: translateY(-4px) scale(1.1); }

/* ============================================
   FADE-IN ANIMATION
============================================ */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* ============================================
   RESPONSIVE - TABLET
============================================ */
@media (max-width: 1024px) {
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .ingredients-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  section { padding: 48px 0; }

  /* Nav */
  .nav-links { display: none; }
  .hamburger { display: flex; }

  /* Hero */
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-image-wrap { order: -1; }
  .hero-bottle { max-width: 250px; }
  .hero-cta-wrap { align-items: stretch; }
  .hero-cta-wrap .btn-primary { max-width: none; }

  /* What is */
  .what-inner { grid-template-columns: 1fr; }
  .what-image { order: -1; }

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

  /* Pricing */
  .pricing-grid { grid-template-columns: 1fr; max-width: 360px; margin: 0 auto; }
  .price-card.popular { transform: scale(1); order: -1; }
  .price-card.popular:hover { transform: translateY(-8px); }

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

  /* Guarantee */
  .guarantee-inner { grid-template-columns: 1fr; text-align: center; }
  .guarantee-img-wrap { text-align: center; }
  .gp-item { text-align: left; }

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

  /* Footer */
  .footer-top { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand p { max-width: none; }
}

@media (max-width: 576px) {
  .why-grid { grid-template-columns: 1fr; }
  .ingredients-grid { grid-template-columns: 1fr; }
  .countdown-timer { padding: 12px 16px; gap: 4px; }
  .countdown-block { min-width: 56px; }
}

/* ============================================
   REDUCED MOTION
============================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}