/* =============================
   BRAIN VEX - STYLES.CSS
   Design: Deep Navy + Electric Green + Gold
   Fonts: Montserrat (headings) + Open Sans (body)
   ============================= */

/* ===== CSS VARIABLES ===== */
:root {
  --primary: #0f172a;
  --secondary: #1e3a5f;
  --accent: #4ade80;
  --accent2: #22d3ee;
  --gold: #f59e0b;
  --white: #ffffff;
  --light: #f0fdf4;
  --text: #1e293b;
  --text-light: #64748b;
  --card-bg: #ffffff;
  --gradient: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #0f4c75 100%);
  --gradient-accent: linear-gradient(135deg, #4ade80, #22d3ee);
  --shadow: 0 10px 40px rgba(0,0,0,0.15);
  --shadow-hover: 0 20px 60px rgba(74,222,128,0.3);
  --radius: 16px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 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);
  background: var(--white);
  overflow-x: hidden;
  line-height: 1.7;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a { text-decoration: none; color: inherit; }

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

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

/* ===== BUTTONS ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #4ade80, #22d3ee);
  color: #0f172a;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  padding: 16px 32px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  min-height: 48px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 20px rgba(74,222,128,0.4);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
}

.btn-primary:hover::before { left: 100%; }

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-hover);
}

.btn-primary:active { transform: scale(0.98); }

.btn-primary.full-w { width: 100%; }
.btn-primary.btn-xl { font-size: 1.1rem; padding: 20px 40px; }
.btn-primary.small-btn { font-size: 0.85rem; padding: 10px 20px; }

.btn-primary.glow {
  animation: glowPulse 2s infinite;
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(74,222,128,0.4); }
  50% { box-shadow: 0 8px 40px rgba(74,222,128,0.8); }
}

.pulse-btn {
  animation: pulseBig 2s infinite;
}

@keyframes pulseBig {
  0%, 100% { transform: scale(1); box-shadow: 0 4px 20px rgba(74,222,128,0.4); }
  50% { transform: scale(1.03); box-shadow: 0 10px 50px rgba(74,222,128,0.7); }
}

.btn-arrow { font-size: 1.2rem; transition: transform 0.3s; }
.btn-primary:hover .btn-arrow { transform: translateX(4px); }

/* ===== SECTION HEADER ===== */
.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-header h2 {
  font-size: clamp(24px, 4vw, 36px);
  color: var(--primary);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.section-header.light h2 { color: var(--white); }
.section-header.light p { color: rgba(255,255,255,0.8); }

.section-tag {
  display: inline-block;
  background: rgba(74,222,128,0.15);
  color: #16a34a;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 14px;
  border: 1px solid rgba(74,222,128,0.3);
}

.section-tag.light {
  background: rgba(74,222,128,0.2);
  color: var(--accent);
  border-color: rgba(74,222,128,0.4);
}

.section-tag.urgent {
  background: rgba(239,68,68,0.15);
  color: #dc2626;
  border-color: rgba(239,68,68,0.3);
  animation: urgentBlink 1.5s infinite;
}

@keyframes urgentBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ===== GRADIENT TEXT ===== */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== ANIMATIONS ===== */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger delays */
.fade-up:nth-child(1) { transition-delay: 0.1s; }
.fade-up:nth-child(2) { transition-delay: 0.2s; }
.fade-up:nth-child(3) { transition-delay: 0.3s; }
.fade-up:nth-child(4) { transition-delay: 0.4s; }
.fade-up:nth-child(5) { transition-delay: 0.5s; }
.fade-up:nth-child(6) { transition-delay: 0.6s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .fade-up, .fade-left, .fade-right {
    opacity: 1;
    transform: none;
  }
}

/* ===========================
   SECTION 1: NAVIGATION
   =========================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(15,23,42,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(74,222,128,0.2);
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(15,23,42,0.99);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: 8px;
}

.logo-text {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--white);
  letter-spacing: -0.5px;
}

.logo-text.large { font-size: 2rem; }
.logo-accent { color: var(--accent); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  color: rgba(255,255,255,0.85);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 8px 16px;
  border-radius: 8px;
  transition: var(--transition);
  text-decoration: none;
}

.nav-link:hover {
  color: var(--accent);
  background: rgba(74,222,128,0.1);
}

.nav-cta {
  background: linear-gradient(135deg, #4ade80, #22d3ee);
  color: #0f172a;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 0.88rem;
  padding: 10px 22px;
  border-radius: 50px;
  transition: var(--transition);
  text-decoration: none;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.nav-cta:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 25px rgba(74,222,128,0.5);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===========================
   SECTION 2: HERO
   =========================== */
.hero {
  min-height: 100vh;
  background: var(--gradient);
  display: flex;
  align-items: center;
  padding: 100px 0 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at 60% 40%, rgba(74,222,128,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(34,211,238,0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-image-wrap {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(74,222,128,0.2) 0%, transparent 70%);
  border-radius: 50%;
  animation: glowRotate 4s ease-in-out infinite alternate;
}

@keyframes glowRotate {
  0% { transform: translate(-50%, -50%) scale(1); }
  100% { transform: translate(-50%, -50%) scale(1.2); }
}

.hero-product-img {
  max-width: 380px;
  width: 100%;
  object-fit: contain;
  position: relative;
  z-index: 1;
  animation: heroFloat 3s ease-in-out infinite;
  filter: drop-shadow(0 20px 40px rgba(74,222,128,0.3));
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

.hero-badge {
  position: absolute;
  top: 20px; right: 20px;
  background: var(--gold);
  color: var(--primary);
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 0.8rem;
  padding: 8px 16px;
  border-radius: 50px;
  z-index: 2;
  animation: badgePop 0.5s 1s both;
}

@keyframes badgePop {
  from { transform: scale(0); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.hero-content { color: var(--white); }

.hero-tag {
  display: inline-block;
  background: rgba(74,222,128,0.2);
  color: var(--accent);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 18px;
  border: 1px solid rgba(74,222,128,0.4);
  animation: fadeSlideIn 0.8s 0.2s both;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-h1 {
  font-size: clamp(28px, 4vw, 50px);
  font-weight: 900;
  margin-bottom: 20px;
  line-height: 1.15;
  animation: fadeSlideIn 0.8s 0.4s both;
}

.hero-desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 16px;
  animation: fadeSlideIn 0.8s 0.6s both;
}

.hero-stars {
  font-size: 1rem;
  color: var(--gold);
  margin-bottom: 28px;
  font-weight: 600;
  animation: fadeSlideIn 0.8s 0.7s both;
}

.hero-stars span {
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  font-weight: 400;
}

.hero-cta {
  font-size: 1.05rem;
  padding: 18px 36px;
  margin-bottom: 16px;
  animation: fadeSlideIn 0.8s 0.8s both;
}

.hero-disclaimer {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.6);
  animation: fadeSlideIn 0.8s 1s both;
}

/* ===========================
   SECTION 3: WHY CHOOSE US
   =========================== */
.why-us {
  padding: 80px 0;
  background: var(--light);
}

.badges-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.badge-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid rgba(74,222,128,0.1);
  transition: var(--transition);
}

.badge-card:hover {
  transform: scale(1.05) rotate(1deg);
  box-shadow: var(--shadow-hover);
  border-color: rgba(74,222,128,0.4);
}

.badge-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 18px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--light);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(74,222,128,0.3);
}

.badge-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.badge-card h3 {
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.badge-card p {
  font-size: 0.88rem;
  color: var(--text-light);
  line-height: 1.6;
}

/* ===========================
   SECTION 4: WHAT IS
   =========================== */
.what-is {
  padding: 80px 0;
  background: var(--white);
}

.what-is-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.what-is-image .img-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
  border: 2px solid rgba(74,222,128,0.2);
}

.what-is-image img {
  width: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.what-is-image:hover img { transform: scale(1.03); }

.what-is-content h2 {
  font-size: clamp(22px, 3vw, 34px);
  color: var(--primary);
  margin-bottom: 16px;
}

.what-is-content p {
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 14px;
}

.what-is-content .btn-primary { margin-top: 10px; }

/* ===========================
   SECTION 5: HOW IT WORKS
   =========================== */
.how-it-works {
  padding: 80px 0;
  background: var(--gradient);
  position: relative;
  overflow: hidden;
}

.how-it-works::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(74,222,128,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.accordion-list { max-width: 800px; margin: 0 auto; }

.accordion-item {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(74,222,128,0.2);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.accordion-item.active {
  border-color: rgba(74,222,128,0.5);
  background: rgba(74,222,128,0.08);
}

.accordion-btn {
  width: 100%;
  background: none;
  border: none;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  color: var(--white);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  text-align: left;
  min-height: 48px;
  transition: var(--transition);
}

.accordion-btn:hover { background: rgba(74,222,128,0.1); }

.science .accordion-btn { color: var(--text); }
.faq .accordion-btn { color: var(--text); }

.acc-icon { font-size: 1.3rem; flex-shrink: 0; }

.acc-arrow {
  margin-left: auto;
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.accordion-item.active .acc-arrow { transform: rotate(45deg); }

.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.accordion-item.active .accordion-body {
  max-height: 400px;
}

.accordion-body p {
  padding: 0 22px 18px;
  color: rgba(255,255,255,0.82);
  font-size: 0.95rem;
  line-height: 1.75;
}

.science .accordion-body p,
.faq .accordion-body p { color: var(--text-light); }

/* ===========================
   SECTION 6: REVIEWS
   =========================== */
.reviews {
  padding: 80px 0;
  background: var(--light);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(74,222,128,0.1);
  transition: var(--transition);
}

.review-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.reviewer-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--accent);
  flex-shrink: 0;
}

.reviewer-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.reviewer-info strong {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  color: var(--primary);
}

.reviewer-info span {
  font-size: 0.82rem;
  color: var(--text-light);
}

.stars { color: var(--gold); font-size: 0.9rem; }

.review-text {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===========================
   SECTION 7 & 13: PRICING
   =========================== */
.pricing {
  padding: 80px 0;
  background: var(--gradient);
  position: relative;
  overflow: hidden;
}

.countdown-wrap {
  text-align: center;
  margin-bottom: 40px;
}

.countdown-label {
  color: rgba(255,255,255,0.85);
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 1rem;
}

.countdown-timer {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.time-block {
  background: rgba(74,222,128,0.15);
  border: 2px solid rgba(74,222,128,0.5);
  border-radius: 12px;
  padding: 12px 24px;
  min-width: 80px;
  text-align: center;
}

.time-block span {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 2.5rem;
  color: var(--accent);
  line-height: 1;
}

.time-block small {
  display: block;
  font-size: 0.7rem;
  color: rgba(255,255,255,0.7);
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  letter-spacing: 2px;
  margin-top: 4px;
}

.sep {
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent);
  animation: sepBlink 1s infinite;
}

@keyframes sepBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.price-card {
  background: rgba(255,255,255,0.97);
  border-radius: var(--radius);
  padding: 30px 22px;
  text-align: center;
  border: 2px solid rgba(74,222,128,0.2);
  position: relative;
  transition: var(--transition);
}

.price-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.price-card.popular {
  border-color: var(--accent);
  background: #ffffff;
  transform: scale(1.04);
  box-shadow: 0 20px 60px rgba(74,222,128,0.3);
}

.price-card.popular:hover {
  transform: scale(1.06) translateY(-4px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-accent);
  color: var(--primary);
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 6px 18px;
  border-radius: 50px;
  white-space: nowrap;
}

.price-label {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1rem;
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.bottles-count {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--accent2);
  margin-bottom: 2px;
}

.supply {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 16px;
}

.bottle-img {
  max-height: 160px;
  width: auto;
  margin: 0 auto 16px;
  object-fit: contain;
}

.price-block {
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.old-price {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: #ef4444;
  text-decoration: line-through;
}

.new-price {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 2rem;
  color: var(--primary);
}

.per-bottle, .per-unit {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 16px;
}

.bonus-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 12px;
}

.bonus-tag {
  background: rgba(74,222,128,0.15);
  color: #16a34a;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.7rem;
  padding: 4px 10px;
  border-radius: 50px;
  border: 1px solid rgba(74,222,128,0.3);
}

.payment-img {
  max-width: 180px;
  margin: 12px auto 0;
  opacity: 0.7;
}

.stars-img-wrap {
  text-align: center;
}

.stars-img-wrap img {
  max-width: 300px;
  margin: 0 auto;
}

/* ===========================
   SECTION 8: BONUSES
   =========================== */
.bonuses {
  padding: 80px 0;
  background: var(--white);
}

.bonus-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.bonus-card {
  background: var(--light);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  border: 1px solid rgba(74,222,128,0.2);
  transition: var(--transition);
}

.bonus-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}

.bonus-number {
  display: inline-block;
  background: var(--gradient-accent);
  color: var(--primary);
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 0.8rem;
  padding: 4px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.bonus-card img {
  max-height: 220px;
  width: auto;
  margin: 0 auto 20px;
  border-radius: 12px;
}

.bonus-card h3 {
  font-size: 1.2rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.bonus-card p {
  font-size: 0.92rem;
  color: var(--text-light);
  margin-bottom: 14px;
}

.bonus-value {
  display: inline-block;
  background: rgba(239,68,68,0.1);
  color: #dc2626;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.82rem;
  padding: 6px 14px;
  border-radius: 50px;
  border: 1px solid rgba(239,68,68,0.3);
}

/* ===========================
   SECTION 9: INGREDIENTS
   =========================== */
.ingredients {
  padding: 80px 0;
  background: var(--gradient);
  position: relative;
}

.ingredients-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.ingredient-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(74,222,128,0.2);
  border-radius: var(--radius);
  padding: 24px;
  transition: var(--transition);
}

.ingredient-card:hover {
  background: rgba(74,222,128,0.08);
  border-color: rgba(74,222,128,0.5);
  transform: translateY(-4px);
}

.ing-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 10px;
}

.ingredient-card h3 {
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 8px;
}

.ingredient-card p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
  line-height: 1.7;
}

/* ===========================
   SECTION 10: SCIENCE
   =========================== */
.science {
  padding: 80px 0;
  background: var(--white);
}

.science-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.science .accordion-item {
  background: var(--light);
  border-color: rgba(74,222,128,0.2);
}

.science .accordion-item.active {
  border-color: rgba(74,222,128,0.5);
  background: rgba(74,222,128,0.04);
}

/* ===========================
   SECTION 11: GUARANTEE
   =========================== */
.guarantee {
  padding: 80px 0;
  background: var(--light);
}

.guarantee-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: center;
}

.guarantee-image img {
  max-width: 380px;
  margin: 0 auto;
  filter: drop-shadow(0 10px 30px rgba(74,222,128,0.2));
}

.guarantee-content h2 {
  font-size: clamp(22px, 3vw, 32px);
  color: var(--primary);
  margin-bottom: 12px;
}

.guarantee-content > p {
  color: var(--text-light);
  margin-bottom: 28px;
}

.guarantee-points { margin-bottom: 28px; }

.g-point {
  display: flex;
  gap: 16px;
  margin-bottom: 22px;
  align-items: flex-start;
}

.g-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.g-point h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 6px;
}

.g-point p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.65;
}

/* ===========================
   SECTION 12: BENEFITS
   =========================== */
.benefits {
  padding: 80px 0;
  background: var(--gradient);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.benefit-item {
  display: flex;
  gap: 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(74,222,128,0.2);
  border-radius: var(--radius);
  padding: 22px;
  transition: var(--transition);
}

.benefit-item:hover {
  background: rgba(74,222,128,0.08);
  border-color: rgba(74,222,128,0.4);
  transform: translateX(4px);
}

.benefit-check {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.benefit-item h3 {
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 6px;
}

.benefit-item p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.78);
  line-height: 1.6;
}

/* ===========================
   SECTION 14: FAQ
   =========================== */
.faq {
  padding: 80px 0;
  background: var(--light);
}

.faq-list { max-width: 800px; margin: 0 auto; }

.faq .accordion-item {
  background: var(--white);
  border-color: rgba(74,222,128,0.15);
}

.faq .accordion-item.active {
  border-color: rgba(74,222,128,0.5);
  background: rgba(74,222,128,0.03);
}

/* ===========================
   SECTION 15: FINAL CTA
   =========================== */
.final-cta {
  padding: 80px 0;
  background: var(--gradient);
  position: relative;
  overflow: hidden;
}

.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 60%, rgba(74,222,128,0.1) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 20%, rgba(34,211,238,0.08) 0%, transparent 50%);
}

.final-cta-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.final-cta-wrap {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.final-img img {
  max-width: 380px;
  margin: 0 auto;
  animation: heroFloat 3s ease-in-out infinite;
  filter: drop-shadow(0 20px 40px rgba(74,222,128,0.3));
}

.final-content { color: var(--white); }

.final-content h2 {
  font-size: clamp(22px, 3vw, 36px);
  margin-bottom: 16px;
  line-height: 1.2;
}

.final-content > p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 24px;
}

.final-pricing {
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.final-old {
  color: rgba(255,255,255,0.6);
  font-size: 0.95rem;
}

.final-old s { color: #ef4444; }

.final-new {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 1.6rem;
  color: var(--accent);
}

.final-badges {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.final-badges span {
  color: rgba(255,255,255,0.8);
  font-size: 0.85rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: #040d1a;
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
  border-top: 1px solid rgba(74,222,128,0.2);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  margin-top: 12px;
  line-height: 1.7;
}

.social-icons {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.social-icon {
  width: 40px;
  height: 40px;
  background: rgba(74,222,128,0.1);
  border: 1px solid rgba(74,222,128,0.3);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  transition: var(--transition);
}

.social-icon:hover {
  background: rgba(74,222,128,0.25);
  transform: translateY(-3px);
}

.social-icon svg { width: 18px; height: 18px; }

.footer-links-col h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--white);
  margin-bottom: 16px;
}

.footer-links-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 0.88rem;
  margin-bottom: 8px;
  transition: color 0.3s;
}

.footer-links-col a:hover { color: var(--accent); }

.footer-links-col p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 30px 0;
  text-align: center;
}

.footer-legal-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
}

.legal-link {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  transition: color 0.3s;
}

.legal-link:hover { color: var(--accent); }
.link-separator { color: rgba(255,255,255,0.3); }

.footer-disclaimer {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  line-height: 1.7;
  max-width: 800px;
  margin: 0 auto 16px;
}

.copyright {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}

.copyright a { color: var(--accent); }

/* ===========================
   SCROLL TO TOP
   =========================== */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  background: var(--gradient-accent);
  color: var(--primary);
  border: none;
  border-radius: 50%;
  font-size: 1.4rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  box-shadow: 0 6px 24px rgba(74,222,128,0.4);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  transform: translateY(-3px) scale(1.1);
}

/* ===========================
   POPUP
   =========================== */
.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  padding: 20px;
}

.popup-overlay.active {
  opacity: 1;
  visibility: visible;
}

.popup-box {
  background: var(--white);
  border-radius: 20px;
  padding: 40px 36px;
  max-width: 440px;
  width: 100%;
  position: relative;
  box-shadow: 0 30px 80px rgba(0,0,0,0.4);
  transform: scale(0.8);
  transition: transform 0.3s ease;
  text-align: center;
  border: 2px solid rgba(74,222,128,0.3);
}

.popup-overlay.active .popup-box {
  transform: scale(1);
}

.popup-close {
  position: absolute;
  top: 14px; right: 14px;
  width: 36px;
  height: 36px;
  background: rgba(239,68,68,0.1);
  border: 1px solid rgba(239,68,68,0.3);
  border-radius: 50%;
  color: #ef4444;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 1;
}

.popup-close:hover {
  background: #ef4444;
  color: white;
}

.popup-badge {
  display: inline-block;
  background: rgba(239,68,68,0.1);
  color: #dc2626;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.popup-content h3 {
  font-size: 1.6rem;
  color: var(--primary);
  margin-bottom: 10px;
}

.popup-content p {
  color: var(--text-light);
  margin-bottom: 16px;
}

.popup-price {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.popup-old {
  font-size: 1rem;
  color: #ef4444;
  text-decoration: line-through;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
}

.popup-new {
  font-family: 'Montserrat', sans-serif;
  font-weight: 900;
  font-size: 1.8rem;
  color: var(--primary);
}

.popup-sub {
  margin-top: 10px;
  font-size: 0.8rem;
  color: var(--text-light);
}

/* ===========================
   PURCHASE NOTIFICATION
   =========================== */
.purchase-notif {
  position: fixed;
  bottom: 90px;
  left: 20px;
  background: var(--white);
  border-radius: 14px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
  border-left: 4px solid var(--accent);
  max-width: 280px;
  transform: translateX(-120%);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 998;
}

.purchase-notif.show {
  transform: translateX(0);
}

.purchase-notif img {
  width: 46px;
  height: 46px;
  object-fit: contain;
  border-radius: 8px;
  background: var(--light);
  flex-shrink: 0;
}

.notif-text strong {
  display: block;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--primary);
}

.notif-text p {
  font-size: 0.78rem;
  color: var(--text-light);
  margin: 0;
}

/* ===========================
   RESPONSIVE - TABLET 768px
   =========================== */
@media (max-width: 991px) {
  .badges-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .what-is-grid { grid-template-columns: 1fr; }
  .what-is-image { order: -1; }
  .guarantee-grid { grid-template-columns: 1fr; text-align: center; }
  .guarantee-image { order: -1; }
  .g-point { text-align: left; }
  .final-cta-wrap { grid-template-columns: 1fr; text-align: center; }
  .final-img { order: -1; }
  .final-badges { justify-content: center; }
}

/* ===========================
   RESPONSIVE - MOBILE 768px
   =========================== */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-menu {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(15,23,42,0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 20px;
    transform: translateX(-100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
  }

  .nav-menu.open {
    transform: translateX(0);
  }

  .nav-link { font-size: 1.1rem; padding: 12px 24px; }
  .nav-cta { padding: 14px 30px; font-size: 1rem; }

  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 30px;
  }

  .hero-product-img { max-width: 260px; margin: 0 auto; }
  .hero-cta { width: 100%; }
  .hero-badge { top: 10px; right: 10px; font-size: 0.7rem; }

  .badges-grid { grid-template-columns: 1fr; }
  .reviews-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .bonus-grid { grid-template-columns: 1fr; }
  .ingredients-grid { grid-template-columns: 1fr; }
  .benefits-grid { grid-template-columns: 1fr; }

  .price-card.popular { transform: none; }

  .time-block span { font-size: 2rem; }
  .time-block { min-width: 70px; padding: 10px 18px; }

  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .social-icons { justify-content: center; }
  .footer-legal-links { flex-direction: column; align-items: center; }

  .popup-box { padding: 28px 20px; }

  .purchase-notif {
    left: 10px;
    right: 10px;
    max-width: calc(100% - 20px);
    bottom: 80px;
  }

  .scroll-top { bottom: 16px; right: 16px; width: 48px; height: 48px; font-size: 1.2rem; }
}

/* ===========================
   RESPONSIVE - SMALL 480px
   =========================== */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section-header { margin-bottom: 36px; }
  .why-us, .what-is, .how-it-works, .reviews, .pricing,
  .bonuses, .ingredients, .science, .guarantee, .benefits,
  .faq, .final-cta { padding: 60px 0; }

  .hero { padding: 90px 0 50px; }
  .hero-h1 { font-size: 26px; }
  .hero-cta { font-size: 0.95rem; padding: 16px 24px; }

  .badge-card { padding: 24px 18px; }
  .review-card { padding: 22px 18px; }
  .price-card { padding: 24px 16px; }
  .bonus-card { padding: 24px 18px; }
  .ingredient-card { padding: 18px; }
  .benefit-item { padding: 16px; }

  .guarantee-grid { gap: 30px; }
  .final-cta-wrap { gap: 30px; }
}

/* ===========================
   RESPONSIVE - TINY 320px
   =========================== */
@media (max-width: 360px) {
  .nav-container { padding: 0 14px; }
  .logo-text { font-size: 1.2rem; }
  .hero-h1 { font-size: 22px; }
  .btn-primary { font-size: 0.85rem; padding: 14px 20px; }
  .time-block span { font-size: 1.6rem; }
  .time-block { min-width: 58px; padding: 8px 14px; }
}