/* ============================================
   CitrusBurn™ Landing Page - Premium Stylesheet
   Design: Bold & Energetic with Citrus Vibes
   Mobile-First Responsive Design
   ============================================ */

:root {
    --primary-orange: #FF6B35;
    --primary-orange-dark: #E55A2B;
    --primary-orange-light: #FF8C5A;
    --secondary-green: #2ECC71;
    --secondary-green-dark: #27AE60;
    --accent-yellow: #F1C40F;
    --dark-charcoal: #1A1A2E;
    --dark-navy: #16213E;
    --medium-gray: #4A5568;
    --light-gray: #E2E8F0;
    --off-white: #F8FAFC;
    --pure-white: #FFFFFF;
    --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #F7931E 50%, #FFB347 100%);
    --gradient-hero: linear-gradient(180deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
    --gradient-cta: linear-gradient(135deg, #FF6B35 0%, #FF8C5A 100%);
    --gradient-success: linear-gradient(135deg, #2ECC71 0%, #27AE60 100%);
    --gradient-card: linear-gradient(145deg, #FFFFFF 0%, #F8FAFC 100%);
    --font-display: 'Archivo Black', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    --radius-full: 50%;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);
    --shadow-glow: 0 0 40px rgba(255,107,53,0.4);
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --container-xl: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-body); font-size: 1rem; line-height: 1.7; color: var(--dark-charcoal); background-color: var(--pure-white); overflow-x: hidden; -webkit-font-smoothing: antialiased; }
* { -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
}

.container { width: 100%; max-width: var(--container-xl); margin: 0 auto; padding: 0 var(--space-lg); }
@media (min-width: 768px) { .container { padding: 0 var(--space-xl); } }

h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 400; line-height: 1.2; color: var(--dark-charcoal); }
.section-title { font-size: 1.75rem; text-align: center; margin-bottom: var(--space-md); }
.section-title.left-aligned { text-align: left; }
.section-title .highlight { color: var(--primary-orange); }
.section-subtitle { font-size: 1rem; text-align: center; color: var(--medium-gray); margin-bottom: var(--space-2xl); max-width: 600px; margin-left: auto; margin-right: auto; }
@media (min-width: 768px) { .section-title { font-size: 2.25rem; } .section-subtitle { font-size: 1.125rem; } }
@media (min-width: 1024px) { .section-title { font-size: 2.75rem; } }

/* Navigation */
.main-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(26, 26, 46, 0.95); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); padding: var(--space-sm) 0; transition: all var(--transition-normal); }
.main-header.scrolled { background: rgba(26, 26, 46, 0.98); box-shadow: 0 2px 20px rgba(0,0,0,0.3); padding: var(--space-xs) 0; }
.nav-container { display: flex; align-items: center; justify-content: space-between; max-width: var(--container-xl); margin: 0 auto; padding: 0 var(--space-lg); }
.logo { display: flex; align-items: center; gap: var(--space-sm); font-family: var(--font-display); font-size: 1.25rem; color: var(--pure-white); z-index: 1001; }
.logo-icon { font-size: 1.5rem; }
.logo-text sup { font-size: 0.5em; color: var(--primary-orange); }
.mobile-menu-toggle { display: flex; flex-direction: column; gap: 5px; padding: var(--space-sm); z-index: 1001; }
.hamburger-line { width: 24px; height: 2px; background: var(--pure-white); transition: all var(--transition-normal); border-radius: 2px; }
.mobile-menu-toggle.active .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle.active .hamburger-line:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.nav-links { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: var(--dark-navy); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--space-xl); transform: translateX(100%); transition: transform var(--transition-normal); z-index: 1000; }
.nav-links.active { transform: translateX(0); }
.nav-link { font-size: 1.25rem; color: var(--pure-white); font-weight: 500; padding: var(--space-sm) var(--space-md); transition: color var(--transition-fast); }
.nav-link:hover, .nav-link:focus { color: var(--primary-orange); }
.nav-cta { display: inline-flex; align-items: center; justify-content: center; background: var(--gradient-cta); color: var(--pure-white); font-weight: 600; padding: var(--space-md) var(--space-xl); border-radius: var(--radius-xl); font-size: 1rem; transition: all var(--transition-fast); min-height: 48px; }
.nav-cta:hover, .nav-cta:focus { transform: scale(1.05); box-shadow: var(--shadow-glow); }
@media (min-width: 768px) {
    .mobile-menu-toggle { display: none; }
    .nav-links { position: static; transform: none; background: none; flex-direction: row; gap: var(--space-lg); }
    .nav-link { font-size: 0.9rem; padding: var(--space-xs) var(--space-sm); }
    .nav-cta { padding: var(--space-sm) var(--space-lg); font-size: 0.875rem; min-height: 44px; }
}
@media (min-width: 1024px) { .nav-links { gap: var(--space-xl); } .nav-link { font-size: 1rem; } }

/* Hero Section */
.hero-section { position: relative; min-height: 100vh; background: var(--gradient-hero); padding-top: 80px; overflow: hidden; }
.hero-container { display: flex; flex-direction: column; align-items: center; gap: var(--space-2xl); padding: var(--space-2xl) var(--space-lg); max-width: var(--container-xl); margin: 0 auto; }
.hero-image-wrapper { position: relative; width: 100%; max-width: 300px; animation: heroFloat 4s ease-in-out infinite; }
@keyframes heroFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-20px); } }
.hero-glow { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 120%; height: 120%; background: radial-gradient(circle, rgba(255,107,53,0.4) 0%, transparent 70%); filter: blur(40px); z-index: 0; animation: glowPulse 3s ease-in-out infinite; }
@keyframes glowPulse { 0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); } 50% { opacity: 1; transform: translate(-50%, -50%) scale(1.1); } }
.hero-product-image { position: relative; z-index: 1; width: 100%; height: auto; filter: drop-shadow(0 20px 40px rgba(0,0,0,0.4)); }
.floating-badge { position: absolute; background: var(--pure-white); padding: var(--space-sm) var(--space-md); border-radius: var(--radius-xl); font-size: 0.75rem; font-weight: 600; color: var(--dark-charcoal); box-shadow: var(--shadow-lg); z-index: 2; animation: badgeFloat 3s ease-in-out infinite; }
.badge-1 { top: 10%; right: -10px; animation-delay: 0s; }
.badge-2 { bottom: 20%; left: -10px; animation-delay: 1.5s; }
@keyframes badgeFloat { 0%, 100% { transform: translateY(0) rotate(-2deg); } 50% { transform: translateY(-10px) rotate(2deg); } }
.hero-content { text-align: center; color: var(--pure-white); }
.hero-tag { display: inline-flex; align-items: center; gap: var(--space-sm); background: rgba(255,255,255,0.1); padding: var(--space-sm) var(--space-md); border-radius: var(--radius-xl); font-size: 0.875rem; margin-bottom: var(--space-lg); backdrop-filter: blur(10px); }
.tag-dot { width: 8px; height: 8px; background: var(--secondary-green); border-radius: var(--radius-full); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }
.hero-title { font-size: 1.75rem; line-height: 1.2; margin-bottom: var(--space-lg); color: var(--pure-white); }
.hero-title .highlight { color: var(--primary-orange); display: inline-block; position: relative; }
.hero-title .highlight::after { content: ''; position: absolute; bottom: -4px; left: 0; right: 0; height: 4px; background: var(--gradient-primary); border-radius: 2px; }
.hero-description { margin-bottom: var(--space-xl); }
.hero-description p { font-size: 1rem; line-height: 1.8; margin-bottom: var(--space-md); opacity: 0.9; }
.hero-cta-wrapper { display: flex; flex-direction: column; align-items: center; gap: var(--space-md); }
.hero-cta-button { display: flex; align-items: center; justify-content: center; gap: var(--space-sm); background: var(--gradient-cta); color: var(--pure-white); font-family: var(--font-display); font-size: 1rem; padding: var(--space-md) var(--space-xl); border-radius: var(--radius-xl); min-height: 56px; width: 100%; max-width: 350px; transition: all var(--transition-fast); box-shadow: var(--shadow-glow); }
.hero-cta-button:hover, .hero-cta-button:focus { transform: scale(1.05); box-shadow: 0 0 60px rgba(255,107,53,0.6); }
.hero-cta-button:active { transform: scale(0.98); }
.cta-arrow { font-size: 1.25rem; transition: transform var(--transition-fast); }
.hero-cta-button:hover .cta-arrow { transform: translateX(5px); }
.hero-trust-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-md); font-size: 0.875rem; opacity: 0.8; }
.trust-item { display: flex; align-items: center; gap: var(--space-xs); }
.hero-wave { position: absolute; bottom: 0; left: 0; right: 0; line-height: 0; }
.hero-wave svg { width: 100%; height: 60px; }
.hero-wave path { fill: var(--pure-white); }
@media (min-width: 768px) {
    .hero-container { flex-direction: row; padding: var(--space-3xl) var(--space-xl); }
    .hero-image-wrapper { flex: 0 0 40%; max-width: 400px; }
    .hero-content { flex: 1; text-align: left; }
    .hero-title { font-size: 2.25rem; }
    .hero-cta-wrapper { align-items: flex-start; }
    .hero-trust-badges { justify-content: flex-start; }
    .hero-wave svg { height: 100px; }
}
@media (min-width: 1024px) {
    .hero-container { gap: var(--space-4xl); padding: var(--space-4xl) var(--space-xl); }
    .hero-image-wrapper { max-width: 450px; }
    .hero-title { font-size: 2.75rem; }
    .hero-description p { font-size: 1.125rem; }
    .hero-cta-button { font-size: 1.125rem; padding: var(--space-lg) var(--space-2xl); }
    .floating-badge { font-size: 0.875rem; padding: var(--space-sm) var(--space-lg); }
    .badge-1 { right: -20px; }
    .badge-2 { left: -20px; }
}

/* Why Choose Us */
.why-choose-section { padding: var(--space-3xl) 0; background: var(--off-white); }
.trust-cards-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); }
.trust-card { background: var(--gradient-card); padding: var(--space-xl); border-radius: var(--radius-lg); text-align: center; box-shadow: var(--shadow-md); transition: all var(--transition-normal); border: 1px solid rgba(0,0,0,0.05); }
.trust-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.trust-card-icon { width: 80px; height: 80px; margin: 0 auto var(--space-md); }
.trust-card-icon img { width: 100%; height: 100%; object-fit: contain; }
.trust-card-title { font-family: var(--font-display); font-size: 1.125rem; margin-bottom: var(--space-sm); color: var(--dark-charcoal); }
.trust-card-desc { font-size: 0.9375rem; color: var(--medium-gray); line-height: 1.7; }
@media (min-width: 576px) { .trust-cards-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .trust-cards-grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-xl); } .trust-card { padding: var(--space-2xl) var(--space-lg); } }

/* What Is Section */
.what-is-section { padding: var(--space-3xl) 0; background: var(--pure-white); }
.what-is-grid { display: flex; flex-direction: column; gap: var(--space-2xl); }
.what-is-content { order: 2; }
.what-is-text p { margin-bottom: var(--space-md); font-size: 1rem; line-height: 1.8; color: var(--medium-gray); }
.what-is-image-wrapper { order: 1; position: relative; text-align: center; }
.image-decoration { position: absolute; top: -20px; right: -20px; width: 80%; height: 80%; background: var(--gradient-primary); border-radius: var(--radius-lg); opacity: 0.1; z-index: 0; }
.what-is-image { position: relative; z-index: 1; max-width: 100%; border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); }
@media (min-width: 768px) {
    .what-is-grid { flex-direction: row; align-items: center; }
    .what-is-content { flex: 1; order: 1; }
    .what-is-image-wrapper { flex: 0 0 45%; order: 2; }
}
@media (min-width: 1024px) { .what-is-grid { gap: var(--space-4xl); } .what-is-text p { font-size: 1.0625rem; } }

/* How It Works */
.how-it-works-section { padding: var(--space-3xl) 0; background: var(--dark-charcoal); color: var(--pure-white); }
.how-it-works-section .section-title { color: var(--pure-white); }
.how-it-works-section .section-subtitle { color: rgba(255,255,255,0.7); }
.mechanism-content { max-width: 900px; margin: 0 auto; }
.mechanism-text p { font-size: 1rem; line-height: 1.9; margin-bottom: var(--space-lg); color: rgba(255,255,255,0.85); position: relative; padding-left: var(--space-lg); }
.mechanism-text p::before { content: ''; position: absolute; left: 0; top: 8px; width: 8px; height: 8px; background: var(--primary-orange); border-radius: var(--radius-full); }
@media (min-width: 768px) { .mechanism-text p { font-size: 1.0625rem; padding-left: var(--space-xl); } }

/* Reviews Section */
.reviews-section { padding: var(--space-3xl) 0; background: linear-gradient(180deg, var(--off-white) 0%, var(--pure-white) 100%); }
.reviews-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); }
.review-card { background: var(--pure-white); padding: var(--space-xl); border-radius: var(--radius-lg); box-shadow: var(--shadow-md); border: 1px solid rgba(0,0,0,0.05); transition: all var(--transition-normal); opacity: 0; transform: translateY(30px); }
.review-card.animate { animation: fadeInUp 0.6s ease forwards; }
.review-card:nth-child(1).animate { animation-delay: 0.1s; }
.review-card:nth-child(2).animate { animation-delay: 0.2s; }
.review-card:nth-child(3).animate { animation-delay: 0.3s; }
@keyframes fadeInUp { to { opacity: 1; transform: translateY(0); } }
.review-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
.review-header { display: flex; align-items: center; gap: var(--space-md); margin-bottom: var(--space-md); }
.reviewer-photo { width: 60px; height: 60px; border-radius: var(--radius-full); object-fit: cover; border: 3px solid var(--primary-orange); }
.reviewer-name { font-family: var(--font-display); font-size: 1rem; margin-bottom: var(--space-xs); }
.reviewer-location { font-size: 0.875rem; color: var(--medium-gray); }
.star-rating { margin-bottom: var(--space-md); }
.star { color: var(--accent-yellow); font-size: 1.25rem; }
.review-text { font-size: 0.9375rem; line-height: 1.8; color: var(--medium-gray); font-style: italic; }
@media (min-width: 768px) { .reviews-grid { grid-template-columns: repeat(2, 1fr); } .review-card:nth-child(3) { grid-column: 1 / -1; max-width: 600px; margin: 0 auto; } }
@media (min-width: 1024px) { .reviews-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); } .review-card:nth-child(3) { grid-column: auto; max-width: none; } .review-card { padding: var(--space-2xl); } }

/* Pricing Section */
.pricing-section { padding: var(--space-3xl) 0; background: linear-gradient(180deg, var(--pure-white) 0%, var(--off-white) 100%); }
.pricing-section-2 { background: linear-gradient(180deg, var(--off-white) 0%, var(--pure-white) 100%); }
.countdown-wrapper { text-align: center; margin-bottom: var(--space-2xl); }
.countdown-label { font-size: 1rem; font-weight: 600; color: var(--dark-charcoal); margin-bottom: var(--space-md); }
.countdown-timer { display: inline-flex; align-items: center; gap: var(--space-sm); background: linear-gradient(135deg, #E74C3C 0%, #C0392B 100%); padding: var(--space-md) var(--space-xl); border-radius: var(--radius-lg); box-shadow: 0 4px 20px rgba(231,76,60,0.4); }
.countdown-unit { text-align: center; }
.countdown-number { display: block; font-family: var(--font-display); font-size: 2rem; color: var(--pure-white); line-height: 1; }
.countdown-text { font-size: 0.75rem; color: rgba(255,255,255,0.8); text-transform: uppercase; letter-spacing: 1px; }
.countdown-separator { font-family: var(--font-display); font-size: 2rem; color: var(--pure-white); animation: blink 1s infinite; }
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }
.pricing-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); margin-bottom: var(--space-2xl); }
.pricing-card { background: var(--pure-white); border-radius: var(--radius-lg); padding: var(--space-xl); text-align: center; box-shadow: var(--shadow-md); border: 2px solid transparent; position: relative; transition: all var(--transition-normal); }
.pricing-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-xl); }
.pricing-card.featured { border-color: var(--primary-orange); background: linear-gradient(180deg, #FFF7ED 0%, var(--pure-white) 100%); }
.pricing-card.featured:hover { transform: scale(1.02); }
.popular-ribbon { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--gradient-cta); color: var(--pure-white); font-size: 0.75rem; font-weight: 700; padding: var(--space-xs) var(--space-md); border-radius: var(--radius-xl); text-transform: uppercase; letter-spacing: 1px; box-shadow: var(--shadow-md); }
.pricing-label { font-family: var(--font-display); font-size: 0.875rem; color: var(--primary-orange); text-transform: uppercase; letter-spacing: 2px; margin-bottom: var(--space-sm); }
.pricing-bottles { font-family: var(--font-display); font-size: 1.5rem; color: var(--dark-charcoal); margin-bottom: var(--space-xs); }
.pricing-supply { font-size: 0.875rem; color: var(--medium-gray); margin-bottom: var(--space-md); }
.pricing-image-wrapper { height: 180px; display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-md); }
.pricing-product-image { max-height: 100%; width: auto; transition: transform var(--transition-normal); }
.pricing-card:hover .pricing-product-image { transform: scale(1.05); }
.pricing-per-bottle { font-family: var(--font-display); font-size: 2.5rem; color: var(--dark-charcoal); }
.pricing-per-bottle span { font-size: 1rem; font-family: var(--font-body); color: var(--medium-gray); }
.pricing-total { margin-bottom: var(--space-md); }
.original-price { font-size: 1.125rem; color: var(--medium-gray); text-decoration: line-through; margin-right: var(--space-sm); }
.sale-price { font-size: 1.5rem; font-weight: 700; color: var(--secondary-green); }
.pricing-badges { display: flex; flex-direction: column; gap: var(--space-sm); margin-bottom: var(--space-md); }
.bonus-badge, .shipping-badge { display: inline-block; padding: var(--space-xs) var(--space-sm); border-radius: var(--radius-sm); font-size: 0.75rem; font-weight: 700; text-transform: uppercase; }
.bonus-badge { background: linear-gradient(135deg, #9B59B6 0%, #8E44AD 100%); color: var(--pure-white); }
.shipping-badge { background: var(--gradient-success); color: var(--pure-white); }
.pricing-cta { display: block; width: 100%; background: var(--dark-charcoal); color: var(--pure-white); font-family: var(--font-display); font-size: 1rem; padding: var(--space-md) var(--space-lg); border-radius: var(--radius-md); min-height: 56px; transition: all var(--transition-fast); margin-bottom: var(--space-md); }
.pricing-cta:hover, .pricing-cta:focus { background: var(--primary-orange); transform: scale(1.02); }
.pricing-cta:active { transform: scale(0.98); }
.pricing-cta.featured-cta { background: var(--gradient-cta); box-shadow: var(--shadow-glow); }
.pricing-cta.featured-cta:hover { box-shadow: 0 0 50px rgba(255,107,53,0.5); }
.pricing-rating { max-width: 150px; margin: 0 auto; }
.satisfaction-note { display: flex; align-items: center; justify-content: center; gap: var(--space-md); background: rgba(46,204,113,0.1); padding: var(--space-md) var(--space-lg); border-radius: var(--radius-md); max-width: 600px; margin: 0 auto; flex-wrap: wrap; }
.guarantee-icon { font-size: 1.5rem; }
.satisfaction-note p { font-size: 0.9375rem; color: var(--dark-charcoal); margin: 0; }
@media (min-width: 576px) { .pricing-grid { grid-template-columns: repeat(2, 1fr); } .pricing-card:nth-child(2) { grid-column: 1 / -1; max-width: 400px; margin: 0 auto; } }
@media (min-width: 768px) { .countdown-number { font-size: 2.5rem; } }
@media (min-width: 1024px) { .pricing-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); align-items: stretch; } .pricing-card:nth-child(2) { grid-column: auto; max-width: none; margin: 0; } .pricing-card.featured { transform: scale(1.05); z-index: 1; } .pricing-card.featured:hover { transform: scale(1.08); } .pricing-card { padding: var(--space-2xl); } }

/* Ingredients Section */
.ingredients-section { padding: var(--space-3xl) 0; background: var(--dark-navy); color: var(--pure-white); }
.ingredients-section .section-title { color: var(--pure-white); }
.ingredients-section .section-subtitle { color: rgba(255,255,255,0.7); }
.ingredients-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-lg); }
.ingredient-card { background: rgba(255,255,255,0.05); padding: var(--space-xl); border-radius: var(--radius-lg); border: 1px solid rgba(255,255,255,0.1); transition: all var(--transition-normal); }
.ingredient-card:hover { background: rgba(255,255,255,0.1); border-color: var(--primary-orange); transform: translateY(-3px); }
.ingredient-icon { font-size: 2.5rem; margin-bottom: var(--space-md); }
.ingredient-name { font-family: var(--font-display); font-size: 1.125rem; margin-bottom: var(--space-sm); color: var(--primary-orange); }
.ingredient-desc { font-size: 0.9375rem; line-height: 1.8; color: rgba(255,255,255,0.8); }
@media (min-width: 576px) { .ingredients-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .ingredients-grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-xl); } }

/* Scientific Evidence */
.science-section { padding: var(--space-3xl) 0; background: var(--off-white); }
.science-accordion { max-width: 900px; margin: 0 auto; }
.science-item { background: var(--pure-white); border-radius: var(--radius-md); margin-bottom: var(--space-md); box-shadow: var(--shadow-sm); overflow: hidden; border: 1px solid rgba(0,0,0,0.05); }
.science-header { display: flex; align-items: center; justify-content: space-between; padding: var(--space-lg); cursor: pointer; font-weight: 600; color: var(--dark-charcoal); min-height: 60px; transition: background var(--transition-fast); list-style: none; }
.science-header::-webkit-details-marker { display: none; }
.science-header:hover { background: var(--off-white); }
.science-title { flex: 1; font-size: 1rem; padding-right: var(--space-md); }
.science-toggle { font-size: 1.5rem; color: var(--primary-orange); transition: transform var(--transition-fast); }
.science-item[open] .science-toggle { transform: rotate(45deg); }
.science-body { padding: 0 var(--space-lg) var(--space-lg); }
.science-body p { font-size: 0.9375rem; line-height: 1.8; color: var(--medium-gray); }
@media (min-width: 768px) { .science-title { font-size: 1.0625rem; } }

/* Guarantee Section */
.guarantee-section { padding: var(--space-3xl) 0; background: var(--pure-white); }
.guarantee-grid { display: flex; flex-direction: column; gap: var(--space-2xl); align-items: center; }
.guarantee-image-wrapper { max-width: 250px; }
.guarantee-image { width: 100%; filter: drop-shadow(0 10px 30px rgba(0,0,0,0.1)); }
.guarantee-content { text-align: center; }
.guarantee-points { display: flex; flex-direction: column; gap: var(--space-xl); margin-top: var(--space-xl); }
.guarantee-point { display: flex; flex-direction: column; align-items: center; text-align: center; gap: var(--space-md); }
.point-icon { font-size: 2.5rem; }
.point-content h3 { font-family: var(--font-display); font-size: 1.125rem; margin-bottom: var(--space-sm); color: var(--dark-charcoal); }
.point-content p { font-size: 0.9375rem; line-height: 1.8; color: var(--medium-gray); }
@media (min-width: 768px) {
    .guarantee-grid { flex-direction: row; align-items: flex-start; }
    .guarantee-image-wrapper { flex: 0 0 35%; max-width: 300px; }
    .guarantee-content { flex: 1; text-align: left; }
    .guarantee-point { flex-direction: row; text-align: left; align-items: flex-start; }
    .point-icon { flex-shrink: 0; }
}

/* Benefits Section */
.benefits-section { padding: var(--space-3xl) 0; background: linear-gradient(180deg, var(--off-white) 0%, var(--pure-white) 100%); }
.benefits-content { max-width: 900px; margin: 0 auto; }
.benefit-item { display: flex; gap: var(--space-md); padding: var(--space-lg); background: var(--pure-white); border-radius: var(--radius-md); margin-bottom: var(--space-md); box-shadow: var(--shadow-sm); transition: all var(--transition-normal); border-left: 4px solid var(--secondary-green); }
.benefit-item:hover { transform: translateX(5px); box-shadow: var(--shadow-md); }
.benefit-check { flex-shrink: 0; width: 32px; height: 32px; background: var(--gradient-success); color: var(--pure-white); border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; font-weight: 700; }
.benefit-text h3 { font-family: var(--font-display); font-size: 1rem; margin-bottom: var(--space-xs); color: var(--dark-charcoal); }
.benefit-text p { font-size: 0.9375rem; line-height: 1.7; color: var(--medium-gray); }
@media (min-width: 768px) { .benefit-item { padding: var(--space-xl); } .benefit-text h3 { font-size: 1.125rem; } }

/* FAQ Section */
.faq-section { padding: var(--space-3xl) 0; background: var(--pure-white); }
.faq-accordion { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--off-white); border-radius: var(--radius-md); margin-bottom: var(--space-md); overflow: hidden; border: 1px solid rgba(0,0,0,0.05); }
.faq-question { display: flex; align-items: center; justify-content: space-between; padding: var(--space-lg); cursor: pointer; font-weight: 600; color: var(--dark-charcoal); font-size: 1rem; min-height: 60px; transition: all var(--transition-fast); list-style: none; }
.faq-question::-webkit-details-marker { display: none; }
.faq-question:hover { background: rgba(255,107,53,0.05); color: var(--primary-orange); }
.faq-question span:first-child { flex: 1; padding-right: var(--space-md); }
.faq-toggle { font-size: 1.5rem; color: var(--primary-orange); transition: transform var(--transition-fast); }
.faq-item[open] .faq-toggle { transform: rotate(45deg); }
.faq-answer { padding: 0 var(--space-lg) var(--space-lg); }
.faq-answer p { font-size: 0.9375rem; line-height: 1.8; color: var(--medium-gray); }

/* Final CTA Section */
.final-cta-section { padding: var(--space-3xl) 0; background: var(--gradient-hero); color: var(--pure-white); overflow: hidden; }
.final-cta-content { display: flex; flex-direction: column; align-items: center; gap: var(--space-2xl); text-align: center; }
.final-cta-image-wrapper { position: relative; max-width: 280px; animation: ctaFloat 4s ease-in-out infinite; }
@keyframes ctaFloat { 0%, 100% { transform: translateY(0) rotate(-2deg); } 50% { transform: translateY(-15px) rotate(2deg); } }
.cta-glow { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); width: 150%; height: 150%; background: radial-gradient(circle, rgba(255,107,53,0.5) 0%, transparent 70%); filter: blur(50px); z-index: 0; }
.final-cta-image { position: relative; z-index: 1; width: 100%; filter: drop-shadow(0 20px 50px rgba(0,0,0,0.4)); }
.final-cta-text { max-width: 500px; }
.final-cta-title { font-size: 1.75rem; color: var(--pure-white); margin-bottom: var(--space-sm); }
.final-cta-subtitle { font-size: 1.125rem; opacity: 0.9; margin-bottom: var(--space-xl); }
.final-cta-pricing { margin-bottom: var(--space-xl); }
.regular-price { font-size: 1rem; color: rgba(255,255,255,0.7); margin-bottom: var(--space-sm); }
.strikethrough { text-decoration: line-through; }
.special-price { font-size: 1.25rem; color: var(--pure-white); }
.price-highlight { font-family: var(--font-display); font-size: 2.5rem; color: var(--secondary-green); }
.final-cta-button { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-sm); background: var(--gradient-cta); color: var(--pure-white); font-family: var(--font-display); font-size: 1.125rem; padding: var(--space-lg) var(--space-2xl); border-radius: var(--radius-xl); min-height: 60px; width: 100%; max-width: 350px; transition: all var(--transition-fast); box-shadow: var(--shadow-glow); animation: ctaPulse 2s infinite; }
@keyframes ctaPulse { 0%, 100% { box-shadow: 0 0 40px rgba(255,107,53,0.4); } 50% { box-shadow: 0 0 60px rgba(255,107,53,0.7); } }
.final-cta-button:hover, .final-cta-button:focus { transform: scale(1.05); animation: none; box-shadow: 0 0 80px rgba(255,107,53,0.8); }
.final-cta-button:active { transform: scale(0.98); }
.final-trust-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-md); margin-top: var(--space-lg); font-size: 0.875rem; opacity: 0.9; }
@media (min-width: 768px) {
    .final-cta-content { flex-direction: row; text-align: left; }
    .final-cta-image-wrapper { flex: 0 0 40%; max-width: 350px; }
    .final-cta-text { flex: 1; }
    .final-cta-title { font-size: 2.25rem; }
    .final-trust-badges { justify-content: flex-start; }
}
@media (min-width: 1024px) { .final-cta-title { font-size: 2.75rem; } .price-highlight { font-size: 3rem; } }

/* Footer */
.main-footer { background: var(--dark-charcoal); color: var(--pure-white); padding: var(--space-3xl) 0 var(--space-xl); }
.footer-grid { display: flex; flex-direction: column; gap: var(--space-xl); text-align: center; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-md); }
.footer-links a { font-size: 0.9375rem; color: rgba(255,255,255,0.8); padding: var(--space-sm); transition: color var(--transition-fast); }
.footer-links a:hover { color: var(--primary-orange); }
.footer-disclaimer { max-width: 800px; margin: 0 auto; }
.footer-disclaimer p { font-size: 0.8125rem; line-height: 1.8; color: rgba(255,255,255,0.6); }
.footer-social { display: flex; justify-content: center; gap: var(--space-md); }
.social-link { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; background: rgba(255,255,255,0.1); border-radius: var(--radius-full); color: var(--pure-white); transition: all var(--transition-fast); }
.social-link:hover { background: var(--primary-orange); transform: translateY(-3px); }
.footer-bottom { text-align: center; padding-top: var(--space-xl); margin-top: var(--space-xl); border-top: 1px solid rgba(255,255,255,0.1); }
.footer-bottom p { font-size: 0.875rem; color: rgba(255,255,255,0.6); }

/* Scroll to Top */
.scroll-top-btn { position: fixed; bottom: 20px; right: 20px; width: 56px; height: 56px; background: var(--gradient-cta); color: var(--pure-white); border-radius: var(--radius-full); display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(20px); transition: all var(--transition-normal); z-index: 999; }
.scroll-top-btn.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.scroll-top-btn:hover { transform: translateY(-5px); box-shadow: var(--shadow-glow); }

/* Purchase Notification */
.purchase-notification { position: fixed; bottom: 20px; left: 20px; background: var(--pure-white); padding: var(--space-md); border-radius: var(--radius-md); box-shadow: var(--shadow-xl); max-width: 320px; z-index: 998; transform: translateX(-120%); transition: transform var(--transition-normal); border-left: 4px solid var(--secondary-green); }
.purchase-notification.show { transform: translateX(0); }
.notification-content { display: flex; align-items: center; gap: var(--space-md); }
.notification-icon { font-size: 1.5rem; }
.notification-text { font-size: 0.875rem; line-height: 1.5; color: var(--dark-charcoal); }
.notification-text strong { color: var(--primary-orange); }
.product-name { font-weight: 600; color: var(--secondary-green); }
@media (max-width: 576px) { .purchase-notification { left: 10px; right: 10px; max-width: none; bottom: 80px; } }

/* Animation Classes */
.fade-in { opacity: 0; transform: translateY(30px); transition: all 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.slide-in-left { opacity: 0; transform: translateX(-50px); transition: all 0.6s ease; }
.slide-in-left.visible { opacity: 1; transform: translateX(0); }
.slide-in-right { opacity: 0; transform: translateX(50px); transition: all 0.6s ease; }
.slide-in-right.visible { opacity: 1; transform: translateX(0); }

/* Utility Classes */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }