/* ============================================
   PRONAIL COMPLEX - MODERN GRADIENT DESIGN
   Mobile-First Responsive Stylesheet
   ============================================ */

/* 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: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f9fa;
    overflow-x: hidden;
}

/* ROOT VARIABLES - Modern Gradient Theme */
:root {
    /* Primary Colors - Gradient Blue to Cyan */
    --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    --primary-color: #4F46E5;
    --primary-light: #818CF8;
    --primary-dark: #3730A3;
    --secondary-color: #06B6D4;
    --secondary-light: #22D3EE;
    --secondary-dark: #0891B2;
    
    /* 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;
    
    /* Accent Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    
    /* Spacing */
    --container-padding: 20px;
    --section-padding: 60px 20px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* 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;
    
    /* Z-index */
    --z-popup: 10000;
    --z-notification: 9999;
    --z-header: 1000;
    --z-scroll-top: 999;
}

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

h1 {
    font-size: 28px;
}

h2 {
    font-size: 24px;
}

h3 {
    font-size: 20px;
}

h4 {
    font-size: 18px;
}

p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

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

button {
    font-family: inherit;
    border: none;
    background: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

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

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

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

/* SECTION STYLES */
section {
    padding: var(--section-padding);
}

.section-title {
    font-size: 28px;
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    font-size: 16px;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

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

/* BUTTON STYLES */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    min-height: 48px;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    white-space: nowrap;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left var(--transition-normal);
}

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

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

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

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

.btn-hero {
    background: var(--primary-gradient);
    color: var(--white);
    padding: 18px 36px;
    font-size: 18px;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
}

.btn-large {
    min-height: 56px;
}

.btn-pricing {
    width: 100%;
    background: var(--primary-gradient);
    color: var(--white);
    font-size: 18px;
    padding: 16px;
    margin: 20px 0;
}

.btn-pricing-popular {
    background: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
}

.btn-final-cta {
    background: var(--primary-gradient);
    color: var(--white);
    padding: 20px 40px;
    font-size: 20px;
    min-height: 60px;
}

.btn-popup {
    background: var(--primary-gradient);
    color: var(--white);
    width: 100%;
    padding: 16px;
    font-size: 18px;
    margin-top: 20px;
}

/* Touch feedback for mobile */
.btn:active {
    transform: scale(0.98);
}

/* ============================================
   HEADER / NAVIGATION
   ============================================ */
.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-header);
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
    padding: 8px 0;
}

.navbar {
    padding: 12px 0;
}

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

.navbar-brand .logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
}

.logo-icon {
    font-size: 28px;
}

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

/* Hamburger Menu */
.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

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

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(10.5px) rotate(45deg);
}

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

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-10.5px) rotate(-45deg);
}

/* Mobile Navigation Menu */
.navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--white);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    padding: 80px 30px 30px;
    transition: right var(--transition-normal);
    z-index: 1000;
}

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

.navbar-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.nav-item .nav-link {
    display: block;
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-900);
    padding: 12px 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

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

.nav-cta {
    margin-top: auto;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    padding-top: 100px;
    padding-bottom: 60px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite reverse;
}

.hero-content-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    position: relative;
    z-index: 1;
}

.hero-image-wrapper {
    position: relative;
    max-width: 400px;
    width: 100%;
}

.hero-image-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: var(--primary-gradient);
    opacity: 0.1;
    border-radius: 50%;
    filter: blur(60px);
}

.hero-image {
    position: relative;
    z-index: 1;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
}

.floating-animation {
    animation: floating 3s ease-in-out infinite;
}

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

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    50% {
        transform: translate(30px, -30px) scale(1.1);
    }
}

.hero-badge {
    position: absolute;
    top: 20px;
    right: -10px;
    background: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    color: var(--white);
    padding: 10px 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: pulse-badge 2s ease-in-out infinite;
}

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

.badge-text {
    font-weight: 700;
    font-size: 14px;
}

.hero-content {
    flex: 1;
    text-align: center;
}

.hero-title {
    font-size: 32px;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--gray-900);
}

.hero-description {
    font-size: 16px;
    color: var(--gray-700);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.hero-trust {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 2rem;
}

.trust-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 14px;
    color: var(--gray-700);
}

.trust-icon {
    color: var(--success);
    font-weight: 700;
    font-size: 18px;
}

/* Fade-in animations */
.fade-in-up {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

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

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

.badges-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 3rem;
}

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

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

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

.badge-card:hover {
    transform: translateY(-8px) rotate(2deg);
    box-shadow: var(--shadow-xl);
}

.badge-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    padding: 15px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    border-radius: var(--radius-md);
}

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

.badge-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--gray-900);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.badge-description {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ============================================
   WHAT IS SECTION
   ============================================ */
.what-is-section {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
}

.what-is-wrapper {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
}

.what-is-content {
    flex: 1;
}

.what-is-text {
    font-size: 16px;
    color: var(--gray-700);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.what-is-image-wrapper {
    flex: 1;
    max-width: 500px;
    width: 100%;
}

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

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

.accordion-wrapper {
    max-width: 800px;
    margin: 3rem auto 0;
}

.accordion-item {
    background: var(--white);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.accordion-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    background: var(--white);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 44px;
}

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

.accordion-title {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    text-align: left;
}

.accordion-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

.accordion-icon {
    font-size: 24px;
    font-weight: 300;
    color: var(--primary-color);
    transition: transform var(--transition-fast);
}

.accordion-header[aria-expanded="true"] .accordion-icon {
    transform: rotate(45deg);
}

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

.accordion-header[aria-expanded="true"] + .accordion-content {
    max-height: 500px;
}

.accordion-content p {
    padding: 0 20px 20px;
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.8;
    margin: 0;
}

/* ============================================
   REVIEWS SECTION
   ============================================ */
.reviews-section {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
}

.reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 3rem;
}

.review-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    opacity: 0;
}

.review-card.animate {
    animation: fadeIn 0.8s ease forwards;
}

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

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

.review-header {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.review-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid transparent;
    background: var(--primary-gradient);
    padding: 2px;
}

.review-info {
    flex: 1;
}

.review-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--gray-900);
}

.review-location {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 8px;
}

.review-rating {
    font-size: 16px;
    color: #F59E0B;
}

.review-text {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.8;
    font-style: italic;
}

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

.pricing-section-2 {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
}

/* Countdown Timer */
.countdown-timer {
    max-width: 500px;
    margin: 2rem auto 3rem;
    padding: 24px;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
    border-radius: var(--radius-lg);
    text-align: center;
}

.countdown-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 15px;
}

.countdown-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.countdown-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px 20px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    min-width: 80px;
}

.countdown-value {
    font-size: 32px;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.countdown-label {
    font-size: 12px;
    color: var(--gray-600);
    margin-top: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.countdown-separator {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
}

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 2rem;
}

.pricing-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    border: 2px solid transparent;
}

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

.pricing-card-popular {
    border-color: var(--warning);
    transform: scale(1);
}

.pricing-card-popular:hover {
    transform: translateY(-8px) scale(1);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    color: var(--white);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-md);
}

.pricing-header {
    text-align: center;
    margin-bottom: 20px;
}

.pricing-label {
    display: inline-block;
    padding: 8px 16px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary-color);
}

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

.pricing-package {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--gray-900);
}

.pricing-supply {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 20px;
}

.pricing-image-wrapper {
    margin: 20px 0;
    display: flex;
    justify-content: center;
}

.pricing-image {
    max-width: 150px;
    height: auto;
}

.pricing-price {
    margin: 20px 0;
}

.price-per-bottle {
    font-size: 48px;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    line-height: 1;
}

.price-label {
    font-size: 14px;
    color: var(--gray-600);
    display: block;
    margin-top: 5px;
}

.pricing-total {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 15px 0;
}

.price-original {
    font-size: 20px;
    color: var(--gray-500);
    text-decoration: line-through;
}

.price-current {
    font-size: 28px;
    font-weight: 700;
    color: var(--success);
}

.pricing-bonuses {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 20px 0;
}

.bonus-badge {
    display: inline-block;
    padding: 8px 12px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    color: var(--success);
}

.pricing-payment {
    margin-top: 20px;
    display: flex;
    justify-content: center;
}

.pricing-payment img {
    max-width: 200px;
    height: auto;
    opacity: 0.7;
}

.pricing-rating {
    text-align: center;
    margin-top: 3rem;
}

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

/* ============================================
   INGREDIENTS SECTION
   ============================================ */
.ingredients-section {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
}

.ingredients-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 3rem;
}

.ingredient-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 4px solid transparent;
}

.ingredient-card:hover {
    border-left-color: var(--primary-color);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.ingredient-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--gray-900);
}

.ingredient-description {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.8;
    margin-bottom: 12px;
}

.ingredient-benefits {
    font-size: 14px;
    color: var(--gray-600);
    line-height: 1.6;
}

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

.scientific-content {
    max-width: 900px;
    margin: 3rem auto 0;
}

.scientific-item {
    margin-bottom: 2rem;
    padding: 24px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.scientific-heading {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--gray-900);
}

.scientific-text {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.8;
    margin: 0;
}

/* ============================================
   GUARANTEE SECTION
   ============================================ */
.guarantee-section {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
}

.guarantee-wrapper {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
    margin-top: 3rem;
}

.guarantee-image-wrapper {
    max-width: 350px;
    width: 100%;
}

.guarantee-image {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.1));
}

.guarantee-content {
    flex: 1;
}

.guarantee-item {
    display: flex;
    gap: 20px;
    margin-bottom: 2rem;
}

.guarantee-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--success);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
}

.guarantee-text {
    flex: 1;
}

.guarantee-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--gray-900);
}

.guarantee-description {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.8;
    margin: 0;
}

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

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 3rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.benefit-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.benefit-item:hover {
    background: var(--white);
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
}

.benefit-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
}

.benefit-content {
    flex: 1;
}

.benefit-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--gray-900);
}

.benefit-description {
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.8;
    margin: 0;
}

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-section {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
}

.faq-wrapper {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    background: var(--white);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.faq-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    background: var(--white);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
    min-height: 44px;
}

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

.faq-question {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    flex: 1;
}

.faq-icon {
    font-size: 24px;
    font-weight: 300;
    color: var(--primary-color);
    transition: transform var(--transition-fast);
    flex-shrink: 0;
    margin-left: 15px;
}

.faq-header[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

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

.faq-header[aria-expanded="true"] + .faq-content {
    max-height: 600px;
}

.faq-content p {
    padding: 0 20px 20px;
    font-size: 14px;
    color: var(--gray-700);
    line-height: 1.8;
    margin: 0;
}

/* ============================================
   FINAL CTA SECTION
   ============================================ */
.final-cta-section {
    background: var(--white);
    position: relative;
    overflow: hidden;
}

.final-cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.final-cta-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    text-align: center;
    position: relative;
    z-index: 1;
}

.final-cta-image-wrapper {
    max-width: 350px;
    width: 100%;
}

.final-cta-image {
    width: 100%;
    height: auto;
}

.pulse-animation {
    animation: pulse 2s ease-in-out infinite;
}

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

.final-cta-content {
    flex: 1;
    max-width: 600px;
}

.final-cta-title {
    font-size: 28px;
    margin-bottom: 2rem;
}

.final-cta-pricing {
    margin-bottom: 2rem;
}

.final-cta-price-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 10px;
}

.final-cta-label {
    font-size: 16px;
    color: var(--gray-600);
}

.final-cta-price-old {
    font-size: 24px;
    color: var(--gray-500);
    text-decoration: line-through;
}

.final-cta-price-new {
    font-size: 32px;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.final-cta-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 14px;
    color: var(--gray-700);
}

.feature-icon {
    color: var(--success);
    font-weight: 700;
    font-size: 18px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 40px 20px 20px;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-bottom: 2rem;
}

.footer-link {
    color: var(--gray-300);
    font-size: 14px;
    transition: color var(--transition-fast);
}

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

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

.footer-disclaimer {
    margin-bottom: 2rem;
    font-size: 12px;
    color: var(--gray-400);
    line-height: 1.8;
}

.footer-disclaimer p {
    margin-bottom: 1rem;
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 2rem;
}

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

.social-link:hover {
    background: var(--primary-gradient);
    transform: translateY(-4px);
}

.footer-copyright {
    font-size: 12px;
    color: var(--gray-500);
    padding-top: 20px;
    border-top: 1px solid var(--gray-800);
}

/* ============================================
   SCROLL TO TOP BUTTON
   ============================================ */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: var(--primary-gradient);
    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: var(--z-scroll-top);
    border: none;
    cursor: pointer;
}

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

.scroll-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.scroll-to-top:active {
    transform: translateY(-2px) scale(0.95);
}

/* ============================================
   PURCHASE NOTIFICATION POPUP
   ============================================ */
.purchase-notification {
    position: fixed;
    bottom: 30px;
    left: 30px;
    max-width: 320px;
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    opacity: 0;
    transform: translateX(-400px);
    transition: all var(--transition-normal);
    z-index: var(--z-notification);
}

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

.notification-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.notification-content {
    flex: 1;
}

.notification-name {
    font-weight: 700;
    color: var(--gray-900);
    font-size: 14px;
    margin-bottom: 2px;
}

.notification-text {
    font-size: 12px;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.notification-time {
    font-size: 11px;
    color: var(--gray-500);
}

.notification-close {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    background: none;
    border: none;
    color: var(--gray-500);
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
    transition: color var(--transition-fast);
}

.notification-close:hover {
    color: var(--gray-900);
}

/* ============================================
   CTA POPUP
   ============================================ */
.cta-popup {
    position: fixed;
    inset: 0;
    z-index: var(--z-popup);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.cta-popup-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.cta-popup-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    width: 90%;
    max-width: 500px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-normal);
}

.cta-popup.show .cta-popup-content {
    transform: translate(-50%, -50%) scale(1);
}

.cta-popup-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 36px;
    height: 36px;
    background: var(--gray-200);
    border: none;
    border-radius: 50%;
    color: var(--gray-700);
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 1;
}

.cta-popup-close:hover {
    background: var(--gray-300);
    transform: rotate(90deg);
}

.cta-popup-body {
    padding: 40px 30px 30px;
    text-align: center;
}

.cta-popup-title {
    font-size: 24px;
    margin-bottom: 15px;
    color: var(--gray-900);
}

.cta-popup-text {
    font-size: 16px;
    color: var(--gray-700);
    margin-bottom: 10px;
    line-height: 1.6;
}

.cta-popup-subtext {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 20px;
}

.cta-popup-guarantee {
    font-size: 12px;
    color: var(--success);
    margin-top: 15px;
    font-weight: 600;
}

/* ============================================
   RESPONSIVE DESIGN - TABLET
   ============================================ */
@media (min-width: 576px) {
    /* Typography */
    h1 { font-size: 36px; }
    h2 { font-size: 28px; }
    h3 { font-size: 22px; }
    
    .section-title { font-size: 32px; }
    .hero-title { font-size: 40px; }
    
    /* Layout */
    .badges-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ingredients-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .countdown-box {
        min-width: 100px;
    }
    
    .countdown-value {
        font-size: 40px;
    }
}

/* ============================================
   RESPONSIVE DESIGN - DESKTOP
   ============================================ */
@media (min-width: 768px) {
    /* Remove hamburger, show full navigation */
    .hamburger {
        display: none;
    }
    
    .navbar-menu {
        position: static;
        width: auto;
        height: auto;
        background: none;
        box-shadow: none;
        flex-direction: row;
        padding: 0;
        align-items: center;
    }
    
    .navbar-nav {
        flex-direction: row;
        margin-bottom: 0;
    }
    
    .nav-item .nav-link {
        padding: 8px 16px;
        font-size: 16px;
    }
    
    .nav-cta {
        margin-top: 0;
        margin-left: 20px;
    }
    
    /* Hero Section */
    .hero-content-wrapper {
        flex-direction: row;
        text-align: left;
    }
    
    .hero-content {
        text-align: left;
    }
    
    .hero-title {
        font-size: 48px;
    }
    
    .hero-description {
        font-size: 18px;
    }
    
    .hero-trust {
        flex-direction: row;
        gap: 30px;
    }
    
    /* What Is Section */
    .what-is-wrapper {
        flex-direction: row;
    }
    
    /* Guarantee Section */
    .guarantee-wrapper {
        flex-direction: row;
    }
    
    /* Final CTA */
    .final-cta-wrapper {
        flex-direction: row;
        text-align: left;
    }
    
    .final-cta-content {
        text-align: left;
    }
    
    .final-cta-price-row {
        justify-content: flex-start;
    }
    
    .final-cta-features {
        align-items: flex-start;
    }
    
    .feature-item {
        justify-content: flex-start;
    }
    
    /* Purchase Notification - Move to bottom */
    .purchase-notification {
        bottom: 30px;
        left: 30px;
    }
}

@media (min-width: 992px) {
    /* Typography */
    h1 { font-size: 48px; }
    h2 { font-size: 36px; }
    h3 { font-size: 26px; }
    
    .section-title { font-size: 40px; }
    .section-padding { padding: 80px 40px; }
    
    /* Layout */
    .badges-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
    }
    
    .reviews-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    .ingredients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}

@media (min-width: 1200px) {
    :root {
        --container-padding: 40px;
    }
    
    .container {
        max-width: 1200px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .header,
    .scroll-to-top,
    .purchase-notification,
    .cta-popup {
        display: none !important;
    }
}

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

/* ============================================
   UTILITY CLASSES
   ============================================ */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.text-left {
    text-align: left !important;
}

.text-center {
    text-align: center !important;
}

.text-right {
    text-align: right !important;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

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

.pt-1 { padding-top: 0.5rem; }
.pt-2 { padding-top: 1rem; }
.pt-3 { padding-top: 1.5rem; }
.pt-4 { padding-top: 2rem; }

.pb-1 { padding-bottom: 0.5rem; }
.pb-2 { padding-bottom: 1rem; }
.pb-3 { padding-bottom: 1.5rem; }
.pb-4 { padding-bottom: 2rem; }

/* END OF STYLESHEET */