/* ============================================
   CSS 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: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #ffffff;
    overflow-x: hidden;
}

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

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

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

ul {
    list-style: none;
}

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

/* ============================================
   CSS VARIABLES - Modern Gradient Theme
   ============================================ */

:root {
    /* Primary Colors - Gradient */
    --primary-color: #4F46E5;
    --secondary-color: #06B6D4;
    --accent-color: #8B5CF6;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    --gradient-secondary: linear-gradient(135deg, #8B5CF6 0%, #06B6D4 100%);
    --gradient-accent: linear-gradient(135deg, #4F46E5 0%, #8B5CF6 50%, #06B6D4 100%);
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --light-gray: #F9FAFB;
    --gray: #E5E7EB;
    --dark-gray: #6B7280;
    --black: #1F2937;
    
    /* Text Colors */
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    /* Shadows */
    --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 24px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container */
    --container-max-width: 1200px;
    --container-padding: 20px;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: 1.75rem;
    text-align: center;
}

h3 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 14px 28px;
    min-height: 48px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    text-align: center;
    position: relative;
    overflow: hidden;
}

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

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

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

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

.btn-large {
    padding: 18px 36px;
    font-size: 1.125rem;
    min-height: 56px;
}

.btn-block {
    width: 100%;
}

.btn-arrow {
    font-size: 1.5rem;
    transition: transform var(--transition-normal);
}

.btn:hover .btn-arrow {
    transform: translateX(5px);
}

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

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.7);
    }
    50% {
        box-shadow: 0 0 0 20px rgba(79, 70, 229, 0);
    }
}

/* ============================================
   SECTION 1: NAVIGATION MENU
   ============================================ */

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--shadow-md);
}

.navbar {
    padding: 1rem 0;
}

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

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    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-link {
    font-weight: 500;
    color: var(--text-primary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: all var(--transition-normal);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.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);
}

/* ============================================
   SECTION 2: HERO SECTION
   ============================================ */

.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0F2FE 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s infinite ease-in-out reverse;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-image {
    position: relative;
}

.floating-bottle {
    position: relative;
    animation: heroFloat 3s ease-in-out infinite;
}

.floating-bottle img {
    filter: drop-shadow(0 20px 40px rgba(79, 70, 229, 0.3));
    animation: bottleRotate 20s linear infinite;
}

.glow-effect {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: glowPulse 3s ease-in-out infinite;
}

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

@keyframes bottleRotate {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-30px) rotate(5deg);
    }
}

.hero-text h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero-text p {
    font-size: 1.125rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-text .btn {
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

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

/* ============================================
   SECTION 3: WHY CHOOSE US
   ============================================ */

.why-choose {
    padding: 80px 0;
    background: var(--white);
}

.why-choose h2 {
    margin-bottom: 3rem;
}

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

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: all var(--transition-normal);
    border: 2px solid var(--gray);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 0;
}

.feature-card:hover::before {
    opacity: 0.05;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    margin: 0 auto 1.5rem;
    width: 80px;
    height: 80px;
    position: relative;
    z-index: 1;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.feature-card p {
    font-size: 0.95rem;
    position: relative;
    z-index: 1;
}

/* ============================================
   SECTION 4: WHAT IS
   ============================================ */

.what-is {
    padding: 80px 0;
    background: var(--light-gray);
}

.what-is-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.what-is-text h2 {
    text-align: left;
    margin-bottom: 2rem;
}

.what-is-text p {
    font-size: 1.05rem;
    margin-bottom: 1.5rem;
}

.what-is-image {
    position: relative;
}

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

/* ============================================
   SECTION 5: HOW IT WORKS
   ============================================ */

.how-it-works {
    padding: 80px 0;
    background: var(--white);
}

.how-it-works h2 {
    margin-bottom: 3rem;
}

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

.accordion-item {
    background: var(--white);
    border: 2px solid var(--gray);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.accordion-item:hover {
    border-color: var(--primary-color);
}

.accordion-header {
    width: 100%;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 44px;
}

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

.accordion-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--primary-color);
    transition: transform var(--transition-normal);
}

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

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

.accordion-item.active .accordion-content {
    max-height: 1000px;
}

.accordion-content p {
    padding: 0 1.5rem 1.5rem;
    font-size: 1rem;
    line-height: 1.8;
}

/* ============================================
   SECTION 6: CUSTOMER REVIEWS
   ============================================ */

.reviews {
    padding: 80px 0;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0F2FE 100%);
    position: relative;
    overflow: hidden;
}

.reviews h2 {
    margin-bottom: 3rem;
}

.reviews-grid {
    display: 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);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
    animation: reviewSlideIn 0.6s ease-out forwards;
}

.review-card:nth-child(1) {
    animation-delay: 0.1s;
}

.review-card:nth-child(2) {
    animation-delay: 0.3s;
}

.review-card:nth-child(3) {
    animation-delay: 0.5s;
}

@keyframes reviewSlideIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.review-image {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--primary-color);
    box-shadow: var(--shadow-md);
}

.review-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.review-rating {
    text-align: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #FFC107;
}

.review-content h3 {
    text-align: center;
    margin-bottom: 0.25rem;
    color: var(--primary-color);
}

.review-location {
    display: block;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.review-text {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
    text-align: center;
    font-style: italic;
}

/* ============================================
   SECTION 7 & 12: PRICING
   ============================================ */

.pricing {
    padding: 80px 0;
    background: var(--white);
}

.pricing h2 {
    margin-bottom: 1rem;
}

.pricing-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Countdown Timer */
.countdown-timer {
    text-align: center;
    margin-bottom: 3rem;
}

.timer-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.timer-display {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.timer-box {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 1.5rem 2rem;
    border-radius: var(--radius-md);
    min-width: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: var(--shadow-lg);
}

.timer-box span:first-child {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.timer-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.5rem;
    opacity: 0.9;
}

.timer-separator {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.pricing-card {
    background: var(--white);
    border: 2px solid var(--gray);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
}

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

.pricing-card-popular {
    border: 3px solid var(--primary-color);
    background: linear-gradient(135deg, #EEF2FF 0%, #ffffff 100%);
    transform: scale(1.05);
}

.pricing-card-popular:hover {
    transform: scale(1.08) translateY(-10px);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 1px;
    box-shadow: var(--shadow-md);
}

.pricing-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.pricing-bottles {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

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

.pricing-image {
    margin: 1.5rem auto;
    max-width: 200px;
}

.pricing-price {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1rem;
}

.price-per-bottle {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.price-label {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

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

.price-old {
    font-size: 1.25rem;
    color: var(--text-light);
    text-decoration: line-through;
    margin-right: 0.5rem;
}

.price-new {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-color);
}

.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;
    background: var(--gradient-secondary);
    color: var(--white);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
}

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

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

/* ============================================
   SECTION 8: INGREDIENTS
   ============================================ */

.ingredients {
    padding: 80px 0;
    background: var(--light-gray);
}

.ingredients h2 {
    margin-bottom: 3rem;
}

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

.ingredient-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 2px solid var(--gray);
    transition: all var(--transition-normal);
}

.ingredient-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.ingredient-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.ingredient-card p {
    font-size: 0.95rem;
}

/* ============================================
   SECTION 9: SCIENTIFIC EVIDENCE
   ============================================ */

.scientific-evidence {
    padding: 80px 0;
    background: var(--white);
}

.scientific-evidence h2 {
    margin-bottom: 3rem;
}

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

.evidence-item {
    background: var(--white);
    border: 2px solid var(--gray);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.evidence-item:hover {
    border-color: var(--primary-color);
}

.evidence-header {
    width: 100%;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 44px;
}

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

.evidence-icon {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--primary-color);
    transition: transform var(--transition-normal);
}

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

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

.evidence-item.active .evidence-content {
    max-height: 1000px;
}

.evidence-content p {
    padding: 0 1.5rem 1.5rem;
    font-size: 1rem;
    line-height: 1.8;
}

/* ============================================
   SECTION 10: MONEY BACK GUARANTEE
   ============================================ */

.guarantee {
    padding: 80px 0;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0F2FE 100%);
}

.guarantee h2 {
    margin-bottom: 3rem;
}

.guarantee-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: center;
}

.guarantee-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.guarantee-item {
    margin-bottom: 2rem;
}

.guarantee-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.guarantee-item p {
    font-size: 1rem;
    line-height: 1.8;
}

/* ============================================
   SECTION 11: BENEFITS
   ============================================ */

.benefits {
    padding: 80px 0;
    background: var(--white);
}

.benefits h2 {
    margin-bottom: 3rem;
}

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

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

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

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

.benefit-text h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.benefit-text p {
    font-size: 0.95rem;
    margin: 0;
}

/* ============================================
   SECTION 13: FAQ
   ============================================ */

.faq {
    padding: 80px 0;
    background: var(--light-gray);
}

.faq h2 {
    margin-bottom: 3rem;
}

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

.faq-item {
    background: var(--white);
    border: 2px solid var(--gray);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.faq-header {
    width: 100%;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
    min-height: 44px;
}

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

.faq-icon {
    flex-shrink: 0;
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--primary-color);
    transition: transform var(--transition-normal);
    margin-left: 1rem;
}

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

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

.faq-item.active .faq-content {
    max-height: 1000px;
}

.faq-content p {
    padding: 0 1.5rem 1.5rem;
    font-size: 1rem;
    line-height: 1.8;
}

/* ============================================
   SECTION 16: FINAL CTA
   ============================================ */

.final-cta {
    padding: 80px 0;
    background: var(--white);
}

.final-cta-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: center;
    max-width: 1000px;
    margin: 0 auto;
}

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

.final-cta-image img {
    filter: drop-shadow(0 20px 40px rgba(79, 70, 229, 0.3));
}

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

.final-cta-text h2 {
    text-align: left;
    margin-bottom: 2rem;
    font-size: 2rem;
}

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

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

.final-price-new {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.final-cta-note {
    margin-top: 1.5rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

/* ============================================
   SECTION 17: FOOTER
   ============================================ */

.footer {
    padding: 60px 0 30px;
    background: linear-gradient(135deg, #1F2937 0%, #111827 100%);
    color: var(--white);
}

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

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

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

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

.footer-disclaimer {
    max-width: 900px;
    margin: 0 auto 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
}

.footer-disclaimer p {
    font-size: 0.85rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.footer-social a {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    transform: translateY(-5px);
}

.footer-copyright {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   SCROLL TO TOP BUTTON
   ============================================ */

.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
    cursor: pointer;
}

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

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

/* ============================================
   PURCHASE NOTIFICATION POPUP
   ============================================ */

.purchase-notification {
    position: fixed;
    bottom: 30px;
    left: 30px;
    background: var(--white);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateX(-100%);
    transition: all var(--transition-normal);
    max-width: 350px;
}

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

.notification-icon {
    font-size: 2rem;
}

.notification-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.notification-name {
    font-weight: 600;
    color: var(--text-primary);
}

.notification-message {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.notification-location {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ============================================
   ANIMATIONS & TRANSITIONS
   ============================================ */

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

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

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

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

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

/* ============================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ============================================ */

/* Tablets (768px) */
@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 80px 30px 30px;
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-normal);
        gap: 1.5rem;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    /* Hero */
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .hero-text p {
        font-size: 1rem;
    }
    
    /* Features */
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    /* What Is */
    .what-is-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .what-is-text h2 {
        text-align: center;
    }
    
    /* Reviews */
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .pricing-card-popular {
        transform: scale(1);
    }
    
    .timer-box {
        padding: 1rem 1.5rem;
        min-width: 80px;
    }
    
    .timer-box span:first-child {
        font-size: 2rem;
    }
    
    /* Ingredients */
    .ingredients-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* Guarantee */
    .guarantee-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* Final CTA */
    .final-cta-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .final-cta-text h2 {
        text-align: center;
        font-size: 1.75rem;
    }
    
    /* Footer */
    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .footer-links span {
        display: none;
    }
    
    /* Notification */
    .purchase-notification {
        left: 50%;
        transform: translateX(-50%) translateY(100%);
        bottom: 20px;
        max-width: calc(100% - 40px);
    }
    
    .purchase-notification.show {
        transform: translateX(-50%) translateY(0);
    }
}

/* Large Phones (576px) */
@media (max-width: 576px) {
    :root {
        --container-padding: 15px;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    h3 {
        font-size: 1.125rem;
    }
    
    /* Hero */
    .hero-text h1 {
        font-size: 1.75rem;
    }
    
    .hero-text p {
        font-size: 0.95rem;
    }
    
    /* Features */
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    /* Timer */
    .timer-box {
        padding: 0.75rem 1rem;
        min-width: 70px;
    }
    
    .timer-box span:first-child {
        font-size: 1.75rem;
    }
    
    .timer-label {
        font-size: 0.75rem;
    }
    
    /* Buttons */
    .btn {
        padding: 12px 24px;
    }
    
    .btn-large {
        padding: 14px 28px;
        font-size: 1rem;
    }
    
    /* Sections */
    .why-choose,
    .what-is,
    .how-it-works,
    .reviews,
    .pricing,
    .ingredients,
    .scientific-evidence,
    .guarantee,
    .benefits,
    .faq,
    .final-cta {
        padding: 60px 0;
    }
    
    .hero {
        padding: 80px 0 50px;
    }
    
    /* Scroll Top */
    .scroll-top {
        width: 48px;
        height: 48px;
        bottom: 20px;
        right: 20px;
    }
}

/* Small Phones (480px) */
@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.35rem;
    }
    
    .hero-text h1 {
        font-size: 1.5rem;
    }
    
    .final-price-new {
        font-size: 2rem;
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    h1 {
        font-size: 3rem;
    }
    
    h2 {
        font-size: 2.25rem;
    }
    
    .hero-text h1 {
        font-size: 3rem;
    }
    
    .container {
        padding: 0 30px;
    }
}

/* Large Desktop (1440px+) */
@media (min-width: 1440px) {
    :root {
        --container-max-width: 1400px;
    }
    
    h1 {
        font-size: 3.5rem;
    }
    
    .hero-text h1 {
        font-size: 3.5rem;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .header,
    .scroll-top,
    .purchase-notification,
    .hamburger {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}