/* ===================================
   BURNBLEND - MODERN GRADIENT STYLE
   Mobile-First Responsive Design
   =================================== */

/* CSS VARIABLES */
:root {
    /* Modern Gradient Colors */
    --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    --primary-color: #4F46E5;
    --secondary-color: #06B6D4;
    --accent-color: #F59E0B;
    --success-color: #10B981;
    --danger-color: #EF4444;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --black: #000000;
    --gray-50: #F9FAFB;
    --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;
    
    /* Typography */
    --font-primary: 'Sora', sans-serif;
    --font-secondary: 'Inter', 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

/* RESET & BASE STYLES */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: var(--font-secondary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    overflow-x: hidden;
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: 16px; /* Prevents zoom on iOS */
}

/* CONTAINER */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (min-width: 768px) {
    .container {
        padding: 0 40px;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 60px;
    }
}

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

h1 {
    font-size: 2rem; /* 32px */
}

h2 {
    font-size: 1.75rem; /* 28px */
}

h3 {
    font-size: 1.5rem; /* 24px */
}

@media (min-width: 768px) {
    h1 { font-size: 2.5rem; /* 40px */ }
    h2 { font-size: 2rem; /* 32px */ }
    h3 { font-size: 1.75rem; /* 28px */ }
}

@media (min-width: 1024px) {
    h1 { font-size: 3rem; /* 48px */ }
    h2 { font-size: 2.25rem; /* 36px */ }
    h3 { font-size: 1.875rem; /* 30px */ }
}

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

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    min-height: 48px;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
}

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

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

.btn-primary:active {
    transform: translateY(0);
}

.btn-hero {
    background: var(--primary-gradient);
    color: var(--white);
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
    box-shadow: var(--shadow-xl);
    width: 100%;
}

@media (min-width: 576px) {
    .btn-hero {
        width: auto;
    }
}

.btn-hero:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

.btn-final {
    background: var(--accent-color);
    color: var(--white);
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
    box-shadow: var(--shadow-xl);
    width: 100%;
}

@media (min-width: 576px) {
    .btn-final {
        width: auto;
    }
}

.btn-final:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-2xl);
}

.btn-pricing {
    display: block;
    width: 100%;
    padding: 0.75rem;
    background: transparent;
    transition: transform var(--transition-base);
}

.btn-pricing:hover {
    transform: scale(1.05);
}

.btn-pricing img {
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
}

.btn-popup {
    background: var(--primary-gradient);
    color: var(--white);
    padding: 0.875rem 2rem;
    font-size: 1rem;
    width: 100%;
}

.btn-popup:hover {
    transform: scale(1.05);
}

/* SECTIONS */
section {
    padding: 3rem 0;
}

@media (min-width: 768px) {
    section {
        padding: 4rem 0;
    }
}

@media (min-width: 1024px) {
    section {
        padding: 5rem 0;
    }
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.5rem;
    }
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

/* ===================================
   NAVIGATION MENU (SECTION 1)
   =================================== */
.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: 1000;
    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;
    gap: 2rem;
}

.logo-text {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--gray-900);
}

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

/* Hamburger Menu */
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 30px;
    z-index: 1001;
    transition: all var(--transition-base);
}

.hamburger span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--gray-900);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

@media (min-width: 768px) {
    .hamburger {
        display: none;
    }
}

/* Nav Menu */
.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    box-shadow: var(--shadow-2xl);
    padding: 5rem 2rem 2rem;
    transition: right var(--transition-base);
    z-index: 999;
}

.nav-menu.active {
    right: 0;
}

@media (min-width: 768px) {
    .nav-menu {
        position: static;
        width: auto;
        height: auto;
        background: transparent;
        box-shadow: none;
        padding: 0;
        display: flex;
        align-items: center;
        gap: 2rem;
    }
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .nav-links {
        flex-direction: row;
        gap: 2rem;
        margin-bottom: 0;
    }
}

.nav-link {
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--gray-700);
    transition: color var(--transition-fast);
}

@media (min-width: 768px) {
    .nav-link {
        font-size: 1rem;
    }
}

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

.nav-cta {
    font-size: 0.875rem;
    padding: 0.75rem 1.5rem;
}

@media (min-width: 768px) {
    .nav-cta {
        font-size: 1rem;
    }
}

/* ===================================
   HERO SECTION (SECTION 2)
   =================================== */
.hero-section {
    margin-top: 70px;
    padding: 3rem 0;
    background: linear-gradient(180deg, #F9FAFB 0%, #FFFFFF 100%);
    overflow: hidden;
}

@media (min-width: 1024px) {
    .hero-section {
        padding: 5rem 0;
    }
}

.hero-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-container {
        flex-direction: row;
        gap: 4rem;
    }
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    max-width: 400px;
    animation: float 6s ease-in-out infinite;
}

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

.hero-image-wrapper img {
    width: 100%;
    filter: drop-shadow(0 20px 40px rgba(79, 70, 229, 0.2));
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: var(--primary-gradient);
    opacity: 0.15;
    border-radius: 50%;
    filter: blur(60px);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.1); }
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 2rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 2.75rem;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

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

@media (min-width: 768px) {
    .hero-description {
        font-size: 1.125rem;
    }
}

.hero-trust {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    margin-top: 2rem;
}

@media (min-width: 576px) {
    .hero-trust {
        flex-direction: row;
        gap: 1rem;
    }
}

.trust-stars {
    width: 150px;
}

.trust-text {
    font-size: 0.875rem;
    color: var(--gray-600);
}

/* ===================================
   WHY CHOOSE US (SECTION 3)
   =================================== */
.why-choose-section {
    background: var(--gray-50);
}

.badges-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 576px) {
    .badges-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .badges-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 2rem;
    }
}

.badge-card {
    background: var(--white);
    padding: 2rem 1.5rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.badge-card.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.badge-card:hover {
    transform: translateY(-5px) rotate(2deg);
    box-shadow: var(--shadow-xl);
}

.badge-icon {
    margin-bottom: 1rem;
}

.badge-icon img {
    width: 80px;
    height: 80px;
    margin: 0 auto;
}

.badge-title {
    font-size: 1.25rem;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.badge-description {
    font-size: 0.875rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ===================================
   WHAT IS SECTION (SECTION 4)
   =================================== */
.what-is-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 1024px) {
    .what-is-grid {
        grid-template-columns: 1fr 1fr;
        gap: 4rem;
    }
}

.what-is-content {
    order: 2;
}

@media (min-width: 1024px) {
    .what-is-content {
        order: 1;
    }
}

.what-is-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.what-is-image {
    order: 1;
}

@media (min-width: 1024px) {
    .what-is-image {
        order: 2;
    }
}

.what-is-image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ===================================
   HOW IT WORKS (SECTION 5)
   =================================== */
.how-it-works-section {
    background: var(--gray-50);
}

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

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

.accordion-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    padding: 1.25rem 1.5rem;
    min-height: 44px;
    text-align: left;
    background: var(--white);
    cursor: pointer;
    transition: all var(--transition-base);
}

.accordion-header:hover {
    background: var(--gray-50);
}

.accordion-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: var(--white);
    font-weight: 700;
    border-radius: 50%;
    font-size: 1rem;
}

.accordion-title {
    flex: 1;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--gray-900);
}

@media (min-width: 768px) {
    .accordion-title {
        font-size: 1.25rem;
    }
}

.accordion-icon {
    flex-shrink: 0;
    font-size: 1.5rem;
    color: var(--gray-400);
    transition: transform var(--transition-base);
}

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

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

.accordion-content p {
    padding: 0 1.5rem 1.5rem;
    color: var(--gray-600);
    line-height: 1.8;
}

/* ===================================
   REVIEWS SECTION (SECTION 6)
   =================================== */
.reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .reviews-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

.review-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateX(-50px);
    transition: all var(--transition-slow);
}

.review-card.slide-in {
    opacity: 1;
    transform: translateX(0);
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

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

.review-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--gray-200);
}

.review-info {
    flex: 1;
}

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

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

.review-stars {
    color: var(--accent-color);
    font-size: 1rem;
}

.review-text {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-600);
}

/* ===================================
   PRICING SECTION (SECTION 7 & 13)
   =================================== */
.pricing-section {
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}

.countdown-timer {
    max-width: 500px;
    margin: 0 auto 3rem;
    text-align: center;
    background: linear-gradient(135deg, #EF4444 0%, #F59E0B 100%);
    padding: 1.5rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.timer-text {
    color: var(--white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.timer-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 80px;
}

.timer-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--white);
    font-family: var(--font-primary);
    line-height: 1;
}

@media (min-width: 768px) {
    .timer-value {
        font-size: 3rem;
    }
}

.timer-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.9);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
}

.timer-separator {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (min-width: 576px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

.pricing-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    position: relative;
}

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

.pricing-popular {
    border: 3px solid var(--primary-color);
    background: linear-gradient(180deg, #F0F9FF 0%, #FFFFFF 100%);
}

@media (min-width: 576px) and (max-width: 1023px) {
    .pricing-popular {
        grid-column: span 2;
        max-width: 400px;
        margin: 0 auto;
    }
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-color);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-label {
    display: inline-block;
    background: var(--gray-200);
    color: var(--gray-700);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.pricing-popular .pricing-label {
    background: var(--primary-gradient);
    color: var(--white);
}

.pricing-header {
    margin-bottom: 1.5rem;
}

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

.pricing-supply {
    font-size: 0.875rem;
    color: var(--gray-500);
}

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

.pricing-image img {
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
}

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

.price-per {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    font-family: var(--font-primary);
}

.price-label {
    display: block;
    font-size: 0.875rem;
    color: var(--gray-500);
}

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

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

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

.pricing-badges {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.badge-bonus,
.badge-shipping {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.badge-bonus {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.badge-shipping {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.pricing-payment {
    margin-top: 1rem;
}

.pricing-payment img {
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
}

.pricing-rating {
    text-align: center;
}

.pricing-rating img {
    width: 200px;
    margin: 0 auto;
}

/* ===================================
   BONUSES SECTION (SECTION 8)
   =================================== */
.bonuses-section {
    background: var(--gray-50);
}

.bonuses-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 1024px) {
    .bonuses-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
}

.bonus-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.bonus-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.bonus-image img {
    width: 100%;
    height: auto;
}

.bonus-content {
    padding: 2rem;
}

.bonus-title {
    font-size: 1.5rem;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

.bonus-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.bonus-value {
    font-size: 1rem;
    color: var(--gray-700);
}

.bonus-value span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success-color);
}

/* ===================================
   INGREDIENTS SECTION (SECTION 9)
   =================================== */
.ingredients-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .ingredients-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .ingredients-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

.ingredient-card {
    background: var(--gray-50);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-color);
    transition: all var(--transition-base);
}

.ingredient-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.ingredient-name {
    font-size: 1.25rem;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.ingredient-description {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--gray-600);
    margin-bottom: 0.75rem;
}

.ingredient-benefits {
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--gray-700);
}

/* ===================================
   SCIENTIFIC EVIDENCE (SECTION 10)
   =================================== */
.scientific-section {
    background: var(--gray-50);
}

.scientific-intro {
    max-width: 900px;
    margin: 0 auto 2rem;
    text-align: center;
}

.scientific-intro p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--gray-600);
}

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

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

.evidence-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: 100%;
    padding: 1.25rem 1.5rem;
    min-height: 44px;
    text-align: left;
    background: var(--white);
    cursor: pointer;
    transition: all var(--transition-base);
}

.evidence-header:hover {
    background: var(--gray-50);
}

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

.evidence-icon {
    font-size: 1.5rem;
    color: var(--gray-400);
    transition: transform var(--transition-base);
}

.evidence-item.active .evidence-icon {
    transform: rotate(45deg);
}

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

.evidence-content p {
    padding: 0 1.5rem 1.5rem;
    color: var(--gray-600);
    line-height: 1.8;
}

/* ===================================
   GUARANTEE SECTION (SECTION 11)
   =================================== */
.guarantee-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 1024px) {
    .guarantee-grid {
        grid-template-columns: 1fr 1.5fr;
        gap: 4rem;
    }
}

.guarantee-image img {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.guarantee-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.guarantee-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--success-color);
    color: var(--white);
    font-size: 1.5rem;
    border-radius: 50%;
    font-weight: 700;
}

.guarantee-subtitle {
    font-size: 1.25rem;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.guarantee-item p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--gray-600);
}

/* ===================================
   BENEFITS SECTION (SECTION 12)
   =================================== */
.benefits-section {
    background: var(--gray-50);
}

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

@media (min-width: 768px) {
    .benefits-list {
        gap: 2rem;
    }
}

.benefit-item {
    display: flex;
    gap: 1rem;
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.benefit-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.benefit-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: 50%;
}

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

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

/* ===================================
   FAQ SECTION (SECTION 14)
   =================================== */
.faq-accordion {
    max-width: 900px;
    margin: 0 auto;
}

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

.faq-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: 100%;
    padding: 1.25rem 1.5rem;
    min-height: 44px;
    text-align: left;
    background: var(--white);
    cursor: pointer;
    transition: all var(--transition-base);
}

.faq-header:hover {
    background: var(--gray-50);
}

.faq-question {
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--gray-900);
}

.faq-icon {
    flex-shrink: 0;
    font-size: 1.5rem;
    color: var(--gray-400);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

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

.faq-content p {
    padding: 0 1.5rem 1.5rem;
    color: var(--gray-600);
    line-height: 1.8;
}

/* ===================================
   FINAL CTA SECTION (SECTION 15)
   =================================== */
.final-cta-section {
    background: linear-gradient(135deg, #1F2937 0%, #111827 100%);
    padding: 4rem 0;
}

@media (min-width: 1024px) {
    .final-cta-section {
        padding: 6rem 0;
    }
}

.final-cta-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

@media (min-width: 1024px) {
    .final-cta-content {
        flex-direction: row;
        gap: 4rem;
    }
}

.final-cta-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.final-image-wrapper {
    position: relative;
    max-width: 400px;
    animation: pulse-scale 3s ease-in-out infinite;
}

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

.final-image-wrapper img {
    width: 100%;
    filter: drop-shadow(0 20px 40px rgba(245, 158, 11, 0.3));
}

.final-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    opacity: 0.2;
    border-radius: 50%;
    filter: blur(60px);
}

.final-cta-text {
    flex: 1;
    text-align: center;
}

@media (min-width: 1024px) {
    .final-cta-text {
        text-align: left;
    }
}

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

@media (min-width: 768px) {
    .final-title {
        font-size: 2.5rem;
    }
}

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

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

.final-price-new {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--accent-color);
    font-family: var(--font-primary);
}

@media (min-width: 768px) {
    .final-price-new {
        font-size: 3rem;
    }
}

.final-note {
    font-size: 0.875rem;
    color: var(--gray-300);
    margin-top: 1rem;
}

/* ===================================
   FOOTER (SECTION 16)
   =================================== */
.main-footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 3rem 0 2rem;
}

.footer-content {
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.footer-links a {
    color: var(--gray-300);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

.footer-separator {
    color: var(--gray-600);
}

.footer-disclaimer {
    max-width: 900px;
    margin: 0 auto 2rem;
}

.footer-disclaimer p {
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--gray-400);
}

.footer-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-800);
    color: var(--gray-300);
    border-radius: 50%;
    transition: all var(--transition-base);
}

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

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

/* ===================================
   SCROLL TO TOP BUTTON
   =================================== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

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

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

/* ===================================
   CTA POPUP
   =================================== */
.cta-popup {
    position: fixed;
    bottom: -100%;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 2rem);
    max-width: 400px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2xl);
    z-index: 1000;
    transition: bottom var(--transition-slow);
}

@media (min-width: 768px) {
    .cta-popup {
        bottom: 2rem;
        right: 2rem;
        left: auto;
        transform: none;
        opacity: 0;
        visibility: hidden;
    }
    
    .cta-popup.visible {
        opacity: 1;
        visibility: visible;
    }
}

.cta-popup.visible {
    bottom: 2rem;
}

.popup-content {
    position: relative;
    padding: 2rem;
}

.popup-close {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-200);
    color: var(--gray-700);
    border-radius: 50%;
    font-size: 1.5rem;
    line-height: 1;
    transition: all var(--transition-fast);
}

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

.popup-body {
    text-align: center;
}

.popup-title {
    font-size: 1.5rem;
    color: var(--gray-900);
    margin-bottom: 1rem;
}

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

.popup-price {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.25rem;
}

/* ===================================
   PURCHASE NOTIFICATION
   =================================== */
.purchase-notification {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    max-width: 320px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 1rem 1.5rem;
    transform: translateX(-150%);
    transition: transform var(--transition-slow);
    z-index: 1000;
}

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

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

.notification-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--success-color);
    color: var(--white);
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 700;
}

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

.notification-text strong {
    color: var(--gray-900);
}

.notification-text p {
    font-size: 0.75rem;
    color: var(--gray-600);
    margin-top: 0.25rem;
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ===================================
   ANIMATIONS & TRANSITIONS
   =================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Loading State */
img[loading="lazy"] {
    background: var(--gray-200);
}