/* ========================================
   MAROBRAIN LANDING PAGE - STYLES.CSS
   Modern Gradient Design Theme
   Mobile-First Responsive Design
   ======================================== */

/* ==================== ROOT VARIABLES ==================== */
:root {
    /* Modern Gradient Color Palette */
    --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    --primary-color: #4F46E5;
    --secondary-color: #06B6D4;
    --accent-color: #10B981;
    --dark-color: #1F2937;
    --light-color: #F9FAFB;
    --white: #FFFFFF;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Gradient Variations */
    --gradient-primary: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    --gradient-secondary: linear-gradient(135deg, #06B6D4 0%, #10B981 100%);
    --gradient-accent: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-dark: linear-gradient(135deg, #1F2937 0%, #111827 100%);
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Segoe UI', system-ui, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ==================== GLOBAL RESET ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

*::before,
*::after {
    box-sizing: border-box;
}

/* ==================== BASE STYLES ==================== */
html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== TYPOGRAPHY ==================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
}

h2 {
    font-size: 2rem;
    font-weight: 700;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

h5 {
    font-size: 1.125rem;
    font-weight: 600;
}

h6 {
    font-size: 1rem;
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--secondary-color);
}

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

/* ==================== CONTAINER ==================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    min-height: 48px;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: var(--white);
}

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

.btn-hero {
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 1.125rem;
    padding: 1.25rem 2.5rem;
    box-shadow: var(--shadow-lg);
    animation: pulse 2s infinite;
}

.btn-hero:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
    animation: none;
    color: var(--white);
}

.btn-cart {
    background: var(--gradient-primary);
    color: var(--white);
    width: 100%;
    padding: 1rem;
    font-size: 1.125rem;
    box-shadow: var(--shadow-md);
}

.btn-cart:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--white);
}

.btn-cart-popular {
    background: var(--gradient-accent);
    box-shadow: var(--shadow-lg);
}

.btn-final-cta {
    background: var(--gradient-accent);
    color: var(--white);
    font-size: 1.25rem;
    padding: 1.5rem 3rem;
    box-shadow: var(--shadow-xl);
    animation: pulse 2s infinite;
}

.btn-final-cta:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-2xl);
    animation: none;
    color: var(--white);
}

.btn-exit-popup {
    background: var(--gradient-primary);
    color: var(--white);
    width: 100%;
    padding: 1.25rem;
    font-size: 1.125rem;
    box-shadow: var(--shadow-lg);
}

.btn-icon,
.btn-arrow {
    transition: transform var(--transition-base);
}

.btn:hover .btn-icon,
.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* ==================== SECTION STYLES ==================== */
section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-heading {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subheading {
    text-align: center;
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ==================== NAVIGATION ==================== */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

.main-header.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--gray-700);
    font-weight: 500;
    transition: color var(--transition-base);
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-cta {
    padding: 0.75rem 1.5rem;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--gray-800);
    border-radius: 3px;
    transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ==================== HERO SECTION ==================== */
.hero-section {
    padding-top: 8rem;
    padding-bottom: 6rem;
    background: linear-gradient(135deg, #EFF6FF 0%, #F0FDFA 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, rgba(79, 70, 229, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-image {
    position: relative;
}

.product-showcase {
    position: relative;
    animation: float 3s ease-in-out infinite;
}

.hero-product-img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 25px 50px rgba(0, 0, 0, 0.15));
}

.floating-badge {
    position: absolute;
    top: 10%;
    right: -10%;
    background: var(--gradient-accent);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-xl);
    font-weight: 600;
    animation: bounce 2s infinite;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-heading {
    font-size: 3rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.hero-trust-badges {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.trust-icon {
    color: var(--primary-color);
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
}

.hero-wave svg {
    display: block;
    width: 100%;
    height: auto;
}

/* ==================== WHY CHOOSE SECTION ==================== */
.why-choose-section {
    background: var(--white);
}

.badges-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.badge-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.badge-card.animate {
    animation: slideUp 0.6s ease-out forwards;
}

.badge-card:hover {
    transform: translateY(-10px) rotate(2deg);
    box-shadow: var(--shadow-2xl);
}

.badge-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: var(--radius-lg);
    padding: 1rem;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
}

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

.badge-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.badge-description {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ==================== WHAT IS SECTION ==================== */
.what-is-section {
    background: var(--gray-100);
}

.what-is-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.what-is-text {
    animation: fadeInLeft 0.8s ease-out;
}

.what-is-paragraph {
    font-size: 1.0625rem;
    color: var(--gray-700);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.what-is-image {
    animation: fadeInRight 0.8s ease-out;
}

.support-image {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

/* ==================== HOW IT WORKS SECTION ==================== */
.how-it-works-section {
    background: var(--white);
}

.accordion-container {
    max-width: 900px;
    margin: 0 auto;
}

.accordion-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.accordion-item:hover {
    box-shadow: var(--shadow-lg);
}

.accordion-header {
    width: 100%;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-base);
    min-height: 44px;
}

.accordion-header:hover {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
}

.accordion-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

.accordion-icon {
    color: var(--primary-color);
}

.accordion-arrow {
    transition: transform var(--transition-base);
    color: var(--gray-600);
}

.accordion-item.active .accordion-arrow {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.accordion-item.active .accordion-content {
    max-height: 500px;
}

.accordion-content p {
    padding: 1.5rem;
    color: var(--gray-700);
    line-height: 1.8;
}

/* ==================== REVIEWS SECTION ==================== */
.reviews-section {
    background: linear-gradient(135deg, #EFF6FF 0%, #F0FDFA 100%);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.review-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    opacity: 0;
    transform: scale(0.9);
}

.review-card.animate {
    animation: zoomIn 0.6s ease-out forwards;
}

.review-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-2xl);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.reviewer-photo {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    border: 3px solid var(--primary-color);
    object-fit: cover;
}

.reviewer-info {
    flex: 1;
}

.reviewer-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
}

.reviewer-location {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

.review-stars {
    display: flex;
    gap: 0.25rem;
}

.review-text {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.verified-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--accent-color);
    font-weight: 500;
}

/* ==================== PRICING SECTION ==================== */
.pricing-section {
    background: linear-gradient(135deg, #1F2937 0%, #111827 100%);
    color: var(--white);
}

.pricing-section .section-heading {
    color: var(--white);
    -webkit-text-fill-color: var(--white);
}

.pricing-section .section-subheading {
    color: var(--gray-300);
}

.countdown-timer {
    max-width: 500px;
    margin: 0 auto 3rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.timer-label {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--gray-300);
}

.timer-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.timer-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.timer-value {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.timer-text {
    font-size: 0.875rem;
    color: var(--gray-400);
    text-transform: uppercase;
    margin-top: 0.5rem;
}

.timer-separator {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-400);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.pricing-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.pricing-popular {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-accent);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 700;
    box-shadow: var(--shadow-lg);
}

.pricing-header {
    margin-bottom: 1rem;
}

.pricing-label {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
}

.pricing-bottles {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 1rem 0 0.5rem;
}

.pricing-supply {
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.pricing-image {
    margin: 2rem 0;
}

.pricing-image img {
    width: 100%;
    max-width: 250px;
    height: auto;
    margin: 0 auto;
}

.pricing-price {
    margin: 1.5rem 0;
}

.price-per {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
}

.price-unit {
    font-size: 1rem;
    color: var(--gray-600);
}

.pricing-total {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.price-old {
    font-size: 1.5rem;
    color: var(--gray-400);
    text-decoration: line-through;
}

.price-new {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
}

.pricing-bonuses {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 1rem 0;
}

.bonus-badge {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(5, 150, 105, 0.1) 100%);
    color: var(--accent-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
}

.payment-logos {
    margin-top: 1.5rem;
    opacity: 0.7;
}

.payment-logos img {
    width: 100%;
    max-width: 250px;
    margin: 0 auto;
}

.rating-display {
    text-align: center;
    margin-top: 2rem;
}

.rating-image {
    max-width: 300px;
    margin: 0 auto;
}

/* ==================== BONUSES SECTION ==================== */
.bonuses-section {
    background: linear-gradient(135deg, #F0FDFA 0%, #EFF6FF 100%);
}

.bonuses-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.bonus-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.bonus-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-2xl);
}

.bonus-image {
    margin-bottom: 1.5rem;
}

.bonus-image img {
    width: 100%;
    border-radius: var(--radius-lg);
}

.bonus-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.bonus-description {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ==================== INGREDIENTS SECTION ==================== */
.ingredients-section {
    background: var(--white);
}

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

.ingredient-card {
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition-base);
}

.ingredient-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.ingredient-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.ingredient-description {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.ingredient-benefits {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.6;
}

.ingredient-benefits strong {
    color: var(--accent-color);
}

/* ==================== SCIENCE SECTION ==================== */
.science-section {
    background: var(--gray-100);
}

.science-accordion {
    max-width: 900px;
    margin: 0 auto;
}

.science-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.science-header {
    width: 100%;
    padding: 1.5rem;
    background: var(--white);
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-base);
    min-height: 44px;
}

.science-header:hover {
    background: var(--gray-100);
}

.science-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
}

.science-arrow {
    transition: transform var(--transition-base);
    color: var(--gray-600);
}

.science-item.active .science-arrow {
    transform: rotate(180deg);
}

.science-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.science-item.active .science-content {
    max-height: 500px;
}

.science-content p {
    padding: 1.5rem;
    color: var(--gray-700);
    line-height: 1.8;
    font-size: 0.9375rem;
}

/* ==================== GUARANTEE SECTION ==================== */
.guarantee-section {
    background: linear-gradient(135deg, #EFF6FF 0%, #F0FDFA 100%);
}

.guarantee-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: center;
}

.guarantee-image img {
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
}

.guarantee-text .section-heading {
    text-align: left;
}

.guarantee-point {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.guarantee-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.guarantee-content-text h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--gray-900);
}

.guarantee-content-text p {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.7;
}

/* ==================== BENEFITS SECTION ==================== */
.benefits-section {
    background: var(--white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.benefit-item:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
    transform: translateX(10px);
}

.benefit-icon {
    flex-shrink: 0;
    color: var(--accent-color);
}

.benefit-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.benefit-content p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: 0;
}

/* ==================== FAQ SECTION ==================== */
.faq-section {
    background: var(--gray-100);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: var(--white);
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    transition: all var(--transition-base);
    min-height: 44px;
}

.faq-question:hover {
    background: var(--gray-100);
}

.faq-icon {
    transition: transform var(--transition-base);
    color: var(--primary-color);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 1.5rem;
    color: var(--gray-700);
    line-height: 1.8;
    font-size: 0.9375rem;
}

/* ==================== FINAL CTA SECTION ==================== */
.final-cta-section {
    background: linear-gradient(135deg, #1F2937 0%, #111827 100%);
    color: var(--white);
}

.final-cta-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: center;
}

.final-cta-image {
    animation: float 3s ease-in-out infinite;
}

.cta-product-image {
    width: 100%;
    filter: drop-shadow(0 25px 50px rgba(0, 0, 0, 0.3));
}

.final-cta-text {
    animation: fadeInRight 0.8s ease-out;
}

.final-cta-heading {
    font-size: 2.5rem;
    color: var(--white);
    margin-bottom: 2rem;
}

.final-cta-pricing {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.cta-price-old {
    font-size: 1.25rem;
    color: var(--gray-400);
    text-decoration: line-through;
}

.cta-price-new {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-price-new strong {
    font-size: 3rem;
}

.final-cta-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--gray-300);
}

.cta-feature svg {
    color: var(--accent-color);
    flex-shrink: 0;
}

/* ==================== FOOTER ==================== */
.main-footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-heading {
    font-size: 1.125rem;
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--gray-400);
    transition: color var(--transition-base);
}

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

.footer-text {
    color: var(--gray-400);
    font-size: 0.9375rem;
    margin-bottom: 0.5rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: all var(--transition-base);
}

.social-icon:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-disclaimer {
    border-top: 1px solid var(--gray-800);
    padding-top: 2rem;
    margin-bottom: 2rem;
}

.footer-disclaimer p {
    font-size: 0.875rem;
    color: var(--gray-500);
    line-height: 1.6;
    text-align: center;
}

.footer-copyright {
    text-align: center;
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* ==================== SCROLL TO TOP ==================== */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

/* ==================== NOTIFICATION POPUP ==================== */
.notification-popup {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    max-width: 350px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2xl);
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    transform: translateY(100px);
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-popover);
}

.notification-popup.show {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.notification-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.notification-text {
    flex: 1;
    font-size: 0.875rem;
    color: var(--gray-700);
}

.notification-close {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-400);
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.notification-close:hover {
    color: var(--gray-700);
}

/* ==================== EXIT POPUP ==================== */
.exit-popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-modal);
}

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

.exit-popup {
    background: var(--white);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 90%;
    padding: 3rem 2rem;
    position: relative;
    box-shadow: var(--shadow-2xl);
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.exit-popup-overlay.show .exit-popup {
    transform: scale(1);
}

.exit-popup-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    background: var(--gray-200);
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    color: var(--gray-600);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: all var(--transition-base);
}

.exit-popup-close:hover {
    background: var(--gray-300);
    color: var(--gray-900);
}

.exit-popup-content {
    text-align: center;
}

.exit-popup-heading {
    font-size: 2rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.exit-popup-text {
    font-size: 1.125rem;
    color: var(--gray-700);
    margin-bottom: 2rem;
}

.exit-popup-offer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.offer-price {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-400);
    text-decoration: line-through;
}

.offer-arrow {
    font-size: 2rem;
    color: var(--primary-color);
}

.offer-new-price {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.exit-popup-note {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-top: 1rem;
}

/* ==================== ANIMATIONS ==================== */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ==================== RESPONSIVE DESIGN ==================== */

/* Large Tablets and Small Laptops (max-width: 1024px) */
@media (max-width: 1024px) {
    :root {
        --spacing-3xl: 4rem;
    }
    
    .section-heading {
        font-size: 2rem;
    }
    
    .badges-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .bonuses-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Tablets (max-width: 768px) */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 3rem;
    }
    
    /* Navigation */
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--white);
        box-shadow: var(--shadow-2xl);
        flex-direction: column;
        align-items: flex-start;
        padding: 5rem 2rem 2rem;
        transition: right var(--transition-base);
        z-index: var(--z-modal);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-links {
        flex-direction: column;
        width: 100%;
        gap: 0;
    }
    
    .nav-links li {
        width: 100%;
        border-bottom: 1px solid var(--gray-200);
    }
    
    .nav-link {
        display: block;
        padding: 1rem 0;
    }
    
    .nav-cta {
        width: 100%;
        margin-top: 1rem;
    }
    
    /* Hero Section */
    .hero-section {
        padding-top: 6rem;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-image {
        order: 1;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-heading {
        font-size: 2rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .section-heading {
        font-size: 1.75rem;
    }
    
    .hero-trust-badges {
        justify-content: center;
    }
    
    .floating-badge {
        top: 5%;
        right: 5%;
    }
    
    /* Badges */
    .badges-grid {
        grid-template-columns: 1fr;
    }
    
    /* What Is Section */
    .what-is-content {
        grid-template-columns: 1fr;
    }
    
    .what-is-image {
        order: -1;
    }
    
    /* Reviews */
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-popular {
        transform: scale(1);
    }
    
    .timer-value {
        font-size: 2.5rem;
    }
    
    /* Bonuses */
    .bonuses-grid {
        grid-template-columns: 1fr;
    }
    
    /* Ingredients */
    .ingredients-grid {
        grid-template-columns: 1fr;
    }
    
    /* Guarantee */
    .guarantee-content {
        grid-template-columns: 1fr;
    }
    
    .guarantee-text .section-heading {
        text-align: center;
    }
    
    /* Final CTA */
    .final-cta-content {
        grid-template-columns: 1fr;
    }
    
    .final-cta-image {
        order: -1;
    }
    
    .final-cta-heading {
        font-size: 1.75rem;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    /* Notification Popup */
    .notification-popup {
        left: 1rem;
        right: 1rem;
        max-width: calc(100% - 2rem);
    }
    
    /* Scroll to Top */
    .scroll-to-top {
        width: 48px;
        height: 48px;
        bottom: 1rem;
        right: 1rem;
    }
}

/* Mobile Phones (max-width: 576px) */
@media (max-width: 576px) {
    .container {
        padding: 0 1rem;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .hero-section {
        padding-top: 5rem;
        padding-bottom: 3rem;
    }
    
    .hero-heading {
        font-size: 1.75rem;
    }
    
    .section-heading {
        font-size: 1.5rem;
    }
    
    .section-subheading {
        font-size: 1rem;
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
    }
    
    .btn-hero {
        font-size: 1rem;
        padding: 1rem 2rem;
    }
    
    .btn-final-cta {
        font-size: 1.125rem;
        padding: 1.25rem 2rem;
    }
    
    .timer-value {
        font-size: 2rem;
    }
    
    .timer-separator {
        font-size: 1.5rem;
    }
    
    .countdown-timer {
        padding: 1.5rem;
    }
    
    .price-per {
        font-size: 2.5rem;
    }
    
    .price-new {
        font-size: 1.75rem;
    }
    
    .final-cta-heading {
        font-size: 1.5rem;
    }
    
    .cta-price-new {
        font-size: 2rem;
    }
    
    .cta-price-new strong {
        font-size: 2.5rem;
    }
    
    .accordion-title {
        font-size: 1rem;
    }
    
    .faq-question {
        font-size: 1rem;
    }
    
    .exit-popup {
        padding: 2rem 1.5rem;
    }
    
    .exit-popup-heading {
        font-size: 1.5rem;
    }
    
    .offer-price {
        font-size: 2rem;
    }
    
    .offer-new-price {
        font-size: 2.5rem;
    }
}

/* Small Mobile Phones (max-width: 375px) */
@media (max-width: 375px) {
    .hero-heading {
        font-size: 1.5rem;
    }
    
    .section-heading {
        font-size: 1.375rem;
    }
    
    .hero-trust-badges {
        flex-direction: column;
        gap: 1rem;
    }
    
    .trust-item {
        justify-content: center;
    }
}

/* ==================== REDUCED MOTION ==================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* ==================== PRINT STYLES ==================== */
@media print {
    .main-header,
    .hamburger,
    .scroll-to-top,
    .notification-popup,
    .exit-popup-overlay,
    .countdown-timer {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    a {
        text-decoration: underline;
    }
}