/* =====================================================
   NITRIC OXIDE BOOSTER - MEDICAL PROFESSIONAL DESIGN
   Mobile-First Responsive Styling
   ===================================================== */

/* ===================
   CSS RESET & BASE
   =================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Medical Professional Color Palette */
    --primary-blue: #1E40AF;
    --medium-blue: #3B82F6;
    --light-blue: #93C5FD;
    --extra-light-blue: #DBEAFE;
    --white: #FFFFFF;
    --off-white: #F9FAFB;
    --light-gray: #F3F4F6;
    --gray: #6B7280;
    --dark-gray: #374151;
    --black: #111827;
    --success-green: #10B981;
    --warning-orange: #F59E0B;
    --error-red: #EF4444;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-heading: 'Georgia', 'Times New Roman', serif;

    /* Spacing */
    --section-padding: 60px 20px;
    --container-max: 1200px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.7;
    color: var(--dark-gray);
    background-color: var(--white);
    overflow-x: hidden;
}

/* Remove tap highlight on mobile */
* {
    -webkit-tap-highlight-color: transparent;
}

/* Prevent zoom on input focus (iOS) */
input, select, textarea, button {
    font-size: 16px;
}

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, ol {
    list-style: none;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    color: var(--black);
    margin-bottom: 1rem;
}

h1 {
    font-size: 28px;
}

h2 {
    font-size: 24px;
}

h3 {
    font-size: 20px;
}

p {
    margin-bottom: 1rem;
}

/* Section Headings */
.section-heading {
    text-align: center;
    font-size: 28px;
    color: var(--primary-blue);
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 15px;
}

.section-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--medium-blue), var(--light-blue));
    border-radius: 2px;
}

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

.section-heading.align-left::after {
    left: 0;
    transform: translateX(0);
}

.section-subheading {
    text-align: center;
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 2rem;
}

/* Text Utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-blue), var(--medium-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 32px;
    min-height: 48px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-medium);
    cursor: pointer;
    text-align: center;
}

.primary-cta {
    background: linear-gradient(135deg, var(--primary-blue), var(--medium-blue));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

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

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

.secondary-cta:hover {
    background: var(--primary-blue);
    color: var(--white);
}

.full-width {
    width: 100%;
}

.cta-arrow {
    font-size: 20px;
    transition: transform var(--transition-medium);
}

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

/* ========================
   NAVIGATION
   ======================== */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: all var(--transition-medium);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-blue);
}

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

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: all var(--transition-medium);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(8px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-8px);
}

.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 280px;
    background: var(--white);
    box-shadow: var(--shadow-xl);
    padding: 80px 30px 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    transition: right var(--transition-medium);
    z-index: 999;
}

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

.nav-menu li a {
    display: block;
    padding: 12px 16px;
    font-size: 16px;
    font-weight: 500;
    color: var(--dark-gray);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-menu li a:hover {
    background: var(--extra-light-blue);
    color: var(--primary-blue);
}

.nav-cta {
    background: linear-gradient(135deg, var(--primary-blue), var(--medium-blue));
    color: var(--white) !important;
    text-align: center;
}

/* ========================
   HERO SECTION
   ======================== */
.hero-section {
    position: relative;
    padding: 120px 20px 60px;
    background: linear-gradient(135deg, var(--extra-light-blue) 0%, var(--white) 100%);
    overflow: hidden;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, var(--light-blue) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, var(--light-blue) 0%, transparent 50%);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

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

.hero-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
    position: relative;
    z-index: 1;
}

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

.product-spotlight {
    position: relative;
    display: inline-block;
    animation: productEntrance 1s ease-out;
}

@keyframes productEntrance {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(30px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.hero-product {
    max-width: 300px;
    margin: 0 auto;
    filter: drop-shadow(0 10px 30px rgba(30, 64, 175, 0.3));
    animation: pulse-glow 3s infinite ease-in-out;
}

@keyframes pulse-glow {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 10px 30px rgba(30, 64, 175, 0.3));
    }
    50% {
        transform: scale(1.05);
        filter: drop-shadow(0 15px 40px rgba(59, 130, 246, 0.5));
    }
}

.trust-badges-hero {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.badge-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--white);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    font-size: 14px;
    color: var(--dark-gray);
}

.badge-icon {
    color: var(--success-green);
    font-weight: 700;
}

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

.hero-headline {
    font-size: 28px;
    line-height: 1.3;
    margin-bottom: 20px;
    color: var(--black);
}

.hero-text {
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray);
    margin-bottom: 16px;
}

.hero-assurance {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.assurance-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--dark-gray);
}

.check-mark {
    color: var(--success-green);
    font-weight: 700;
}

/* Animation Classes */
.fade-slide-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeSlideUp 0.8s ease-out forwards;
}

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

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }
.delay-4 { animation-delay: 0.8s; }

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

.feature-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 40px;
}

.feature-card {
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-lg);
    padding: 30px 20px;
    text-align: center;
    transition: all var(--transition-medium);
    opacity: 0;
    transform: scale(0.9);
}

.feature-card.scale-in {
    animation: scaleIn 0.6s ease-out forwards;
}

@keyframes scaleIn {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

.feature-visual {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

.feature-visual img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.feature-card h3 {
    font-size: 20px;
    color: var(--primary-blue);
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--gray);
    margin: 0;
}

/* ========================
   WHAT IS SECTION
   ======================== */
.what-is-section {
    padding: var(--section-padding);
    background: var(--off-white);
}

.dual-layout {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
}

.content-area {
    opacity: 0;
    transform: translateX(-50px);
}

.content-area.slide-in-left {
    animation: slideInLeft 0.8s ease-out forwards;
}

@keyframes slideInLeft {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.visual-area {
    opacity: 0;
    transform: translateX(50px);
}

.visual-area.slide-in-right {
    animation: slideInRight 0.8s ease-out forwards;
}

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

.benefit-visual {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 100%;
}

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

.accordion-container {
    max-width: 900px;
    margin: 40px auto 0;
}

.accordion-card {
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.accordion-card:hover {
    border-color: var(--light-blue);
}

.accordion-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    text-align: left;
    cursor: pointer;
    background: var(--white);
    transition: all var(--transition-fast);
    min-height: 44px;
}

.accordion-trigger:hover {
    background: var(--extra-light-blue);
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue), var(--medium-blue));
    color: var(--white);
    border-radius: 50%;
    font-weight: 700;
    font-size: 16px;
}

.step-title {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--black);
}

.expand-icon {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--medium-blue);
    transition: transform var(--transition-medium);
}

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

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

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

.accordion-content p {
    padding: 0 20px 20px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray);
    margin: 0;
}

/* ========================
   REVIEWS SECTION
   ======================== */
.reviews-section {
    padding: var(--section-padding);
    background: var(--off-white);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 40px;
}

.testimonial-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 30px 20px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(30px) rotateX(10deg);
    transition: all var(--transition-medium);
}

.testimonial-card.card-float-in {
    animation: cardFloatIn 0.8s ease-out forwards;
}

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

.testimonial-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.reviewer-profile {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.reviewer-image {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--light-blue);
    box-shadow: var(--shadow-sm);
}

.reviewer-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--black);
    margin-bottom: 4px;
}

.reviewer-locale {
    font-size: 13px;
    color: var(--gray);
    margin-bottom: 8px;
}

.rating-stars {
    color: var(--warning-orange);
    font-size: 16px;
    letter-spacing: 2px;
}

.review-content {
    font-size: 15px;
    line-height: 1.7;
    color: var(--dark-gray);
    font-style: italic;
}

/* ========================
   PRICING SECTION
   ======================== */
.pricing-section {
    padding: var(--section-padding);
    background: linear-gradient(180deg, var(--white) 0%, var(--extra-light-blue) 100%);
}

.timer-wrapper {
    text-align: center;
    margin: 30px 0;
}

.timer-label {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 15px;
}

.countdown-display {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    background: var(--white);
    padding: 20px 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

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

.time-value {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1;
    font-family: monospace;
}

.time-label {
    display: block;
    font-size: 12px;
    color: var(--gray);
    margin-top: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.time-separator {
    font-size: 36px;
    font-weight: 700;
    color: var(--medium-blue);
}

.pricing-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin: 40px 0;
}

.price-package {
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-lg);
    padding: 30px 20px;
    text-align: center;
    transition: all var(--transition-medium);
    position: relative;
}

.price-package:hover {
    border-color: var(--medium-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.featured-package {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(180deg, var(--white) 0%, var(--extra-light-blue) 100%);
}

.popularity-tag {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--error-red);
    color: var(--white);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.package-badge {
    display: inline-block;
    background: var(--primary-blue);
    color: var(--white);
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.package-title {
    font-size: 22px;
    color: var(--black);
    margin-bottom: 8px;
}

.package-supply {
    font-size: 15px;
    color: var(--gray);
    margin-bottom: 20px;
}

.package-visual {
    margin: 20px 0;
}

.package-visual img {
    max-width: 200px;
    margin: 0 auto;
}

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

.unit-cost {
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.cost-label {
    font-size: 16px;
    color: var(--gray);
    font-weight: 400;
}

.price-comparison {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-size: 20px;
    margin: 10px 0;
}

.original-price {
    color: var(--gray);
    text-decoration: line-through;
}

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

.bonus-indicators {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 15px 0;
}

.bonus-item {
    display: inline-block;
    background: var(--success-green);
    color: var(--white);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
}

.payment-icons {
    margin-top: 20px;
    opacity: 0.7;
}

.payment-icons img {
    max-width: 200px;
    margin: 0 auto;
}

.ratings-showcase {
    text-align: center;
    margin-top: 40px;
}

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

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

@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(59, 130, 246, 0.6);
    }
}

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

.ingredient-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 40px;
}

.ingredient-item {
    background: var(--white);
    border-left: 4px solid var(--medium-blue);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-medium);
}

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

.ingredient-item h3 {
    font-size: 18px;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.ingredient-item p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray);
    margin: 0;
}

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

.evidence-container {
    max-width: 900px;
    margin: 40px auto 0;
}

.evidence-item {
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
}

.evidence-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    text-align: left;
    cursor: pointer;
    background: var(--white);
    font-size: 16px;
    font-weight: 600;
    color: var(--black);
    transition: all var(--transition-fast);
    min-height: 44px;
}

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

.toggle-icon {
    font-size: 24px;
    color: var(--medium-blue);
    transition: transform var(--transition-medium);
}

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

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

.evidence-item.active .evidence-body {
    max-height: 500px;
}

.evidence-body p {
    padding: 0 20px 20px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray);
    margin: 0;
}

/* ========================
   GUARANTEE SECTION
   ======================== */
.guarantee-section {
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--extra-light-blue) 0%, var(--white) 100%);
}

.guarantee-grid {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
}

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

.guarantee-seal {
    max-width: 250px;
    margin: 0 auto;
}

.guarantee-points {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.guarantee-point {
    display: flex;
    gap: 15px;
}

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

.point-content h3 {
    font-size: 18px;
    color: var(--primary-blue);
    margin-bottom: 8px;
}

.point-content p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray);
    margin: 0;
}

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

.benefits-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 40px;
}

.benefit-entry {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    background: var(--off-white);
    padding: 20px;
    border-radius: var(--radius-md);
    transition: all var(--transition-medium);
}

.benefit-entry:hover {
    background: var(--extra-light-blue);
    transform: translateX(5px);
}

.benefit-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue), var(--medium-blue));
    color: var(--white);
    border-radius: 50%;
    font-size: 24px;
}

.benefit-text h3 {
    font-size: 16px;
    color: var(--black);
    margin-bottom: 6px;
}

.benefit-text p {
    font-size: 14px;
    color: var(--gray);
    margin: 0;
}

/* ========================
   FAQ SECTION
   ======================== */
.faq-section {
    padding: var(--section-padding);
    background: var(--off-white);
}

.faq-container {
    max-width: 900px;
    margin: 40px auto 0;
}

.faq-item {
    background: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    text-align: left;
    cursor: pointer;
    background: var(--white);
    transition: all var(--transition-fast);
    min-height: 44px;
}

.faq-trigger:hover {
    background: var(--extra-light-blue);
}

.faq-text {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--black);
}

.faq-icon {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--medium-blue);
    transition: transform var(--transition-medium);
}

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

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

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 20px 20px;
    font-size: 15px;
    line-height: 1.7;
    color: var(--gray);
    margin: 0;
}

/* ========================
   FINAL CTA SECTION
   ======================== */
.final-cta-section {
    position: relative;
    padding: var(--section-padding);
    background: linear-gradient(135deg, var(--primary-blue), var(--medium-blue));
    color: var(--white);
    text-align: center;
    overflow: hidden;
}

.cta-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="25" cy="25" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="2" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.3;
}

.final-cta-content {
    position: relative;
    z-index: 1;
}

.final-product-visual {
    margin-bottom: 30px;
}

.final-product-visual img {
    max-width: 300px;
    margin: 0 auto;
}

.bounce-scale {
    animation: bounceScale 1s ease-out;
}

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

.final-headline {
    font-size: 28px;
    color: var(--white);
    margin-bottom: 30px;
}

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

.original-cost {
    font-size: 18px;
    margin-bottom: 10px;
}

.strike-through {
    text-decoration: line-through;
    opacity: 0.7;
}

.special-cost {
    font-size: 24px;
    font-weight: 700;
}

.emphasized-price {
    font-size: 36px;
    color: var(--warning-orange);
}

.large-cta {
    font-size: 18px;
    padding: 20px 40px;
    margin: 30px auto;
}

.final-assurances {
    margin-top: 30px;
    font-size: 14px;
}

.final-assurances p {
    margin: 8px 0;
}

/* ========================
   FOOTER
   ======================== */
.site-footer {
    background: var(--black);
    color: var(--light-gray);
    padding: 40px 20px;
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-links a {
    color: var(--light-blue);
    font-size: 14px;
    transition: color var(--transition-fast);
}

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

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

.footer-disclaimer {
    font-size: 12px;
    line-height: 1.6;
    color: var(--gray);
    margin: 20px 0;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 30px 0;
}

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

.social-icon:hover {
    background: var(--medium-blue);
    transform: translateY(-3px);
}

.copyright {
    font-size: 13px;
    color: var(--gray);
    margin-top: 20px;
}

/* ========================
   SCROLL TO TOP BUTTON
   ======================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-blue), var(--medium-blue));
    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-medium);
    z-index: 999;
    cursor: pointer;
}

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

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

/* ========================
   PURCHASE NOTIFICATION
   ======================== */
.purchase-notification {
    position: fixed;
    bottom: 20px;
    left: 20px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    opacity: 0;
    transform: translateX(-100%);
    transition: all var(--transition-medium);
    z-index: 998;
    max-width: calc(100% - 40px);
}

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

.notif-icon {
    font-size: 24px;
}

.notif-text {
    font-size: 13px;
    line-height: 1.4;
}

.notif-text strong {
    color: var(--primary-blue);
    display: block;
}

/* ========================
   TABLET STYLES (≥576px)
   ======================== */
@media (min-width: 576px) {
    .section-heading {
        font-size: 32px;
    }

    .hero-headline {
        font-size: 36px;
    }

    .feature-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .pricing-options {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .benefits-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================
   TABLET LANDSCAPE (≥768px)
   ======================== */
@media (min-width: 768px) {
    h1 { font-size: 36px; }
    h2 { font-size: 28px; }
    h3 { font-size: 22px; }

    .section-heading {
        font-size: 36px;
    }

    .menu-toggle {
        display: none;
    }

    .nav-menu {
        position: static;
        height: auto;
        width: auto;
        background: transparent;
        box-shadow: none;
        padding: 0;
        flex-direction: row;
        gap: 10px;
    }

    .hero-grid {
        flex-direction: row;
        align-items: center;
    }

    .hero-visual,
    .hero-content {
        flex: 1;
    }

    .hero-content {
        text-align: left;
    }

    .hero-assurance {
        justify-content: flex-start;
    }

    .hero-headline {
        font-size: 40px;
    }

    .dual-layout {
        flex-direction: row;
    }

    .content-area,
    .visual-area {
        flex: 1;
    }

    .guarantee-grid {
        flex-direction: row;
    }

    .guarantee-visual,
    .guarantee-details {
        flex: 1;
    }
}

/* ========================
   DESKTOP (≥992px)
   ======================== */
@media (min-width: 992px) {
    :root {
        --section-padding: 80px 20px;
    }

    .container {
        padding: 0 40px;
    }

    .hero-headline {
        font-size: 48px;
    }

    .hero-product {
        max-width: 400px;
    }

    .feature-cards {
        grid-template-columns: repeat(4, 1fr);
    }

    .pricing-options {
        grid-template-columns: repeat(3, 1fr);
    }

    .testimonial-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .ingredient-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .final-headline {
        font-size: 36px;
    }
}

/* ========================
   LARGE DESKTOP (≥1200px)
   ======================== */
@media (min-width: 1200px) {
    .container {
        max-width: 1200px;
    }

    .hero-headline {
        font-size: 52px;
    }
}

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

/* Focus visible for keyboard navigation */
:focus-visible {
    outline: 3px solid var(--medium-blue);
    outline-offset: 3px;
}

/* ========================
   PRINT STYLES
   ======================== */
@media print {
    .main-nav,
    .scroll-top,
    .purchase-notification {
        display: none !important;
    }
}