/* ==========================================
   GlucoSense Landing Page - Modern Gradient Style
   Mobile-First Responsive Design
   ========================================== */

/* ==========================================
   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: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    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;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================
   NAVIGATION
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(79, 70, 229, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 8px 0;
    box-shadow: 0 4px 30px rgba(79, 70, 229, 0.2);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
}

.nav-logo h2 {
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 24px;
    font-weight: 700;
}

.nav-links {
    display: none;
    list-style: none;
    gap: 32px;
}

.nav-links li a {
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links li a:hover {
    color: #4F46E5;
}

.nav-cta-btn {
    display: none;
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    color: white;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.nav-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
}

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

.hamburger span {
    width: 28px;
    height: 3px;
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    border-radius: 3px;
    transition: all 0.3s ease;
}

.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);
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
    padding: 80px 30px;
    transition: right 0.4s ease;
    z-index: 999;
}

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

.mobile-menu ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.mobile-menu ul li a {
    color: #333;
    font-size: 18px;
    font-weight: 500;
    display: block;
    padding: 12px 0;
    transition: color 0.3s ease;
}

.mobile-menu ul li a:hover {
    color: #4F46E5;
}

.mobile-cta {
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    color: white !important;
    padding: 14px 28px;
    border-radius: 50px;
    text-align: center;
    display: block;
    margin-top: 20px;
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    margin-top: 70px;
    padding: 40px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05), rgba(6, 182, 212, 0.05));
}

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

.hero-image {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-product-img {
    max-width: 300px;
    width: 100%;
}

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

.hero-title {
    font-size: 28px;
    color: #1a1a1a;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero-description {
    font-size: 16px;
    color: #555;
    margin-bottom: 16px;
    line-height: 1.7;
}

.hero-cta-btn {
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    color: white;
    padding: 18px 36px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    display: inline-block;
    margin-top: 20px;
    min-height: 56px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.3);
}

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

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

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

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

.animate-slide-in {
    animation: slideIn 0.8s ease-out;
}

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

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

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-up {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   WHY CHOOSE US
   ========================================== */
.why-choose {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 32px;
    color: #1a1a1a;
    margin-bottom: 50px;
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.why-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.why-card {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    padding: 32px 24px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(79, 70, 229, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.why-card:active {
    transform: scale(0.98);
}

.why-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

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

.why-card h3 {
    font-size: 20px;
    color: #1a1a1a;
    margin-bottom: 12px;
}

.why-card p {
    font-size: 15px;
    color: #666;
    line-height: 1.6;
}

/* ==========================================
   WHAT IS GLUCOSENSE
   ========================================== */
.what-is {
    padding: 60px 0;
    background: rgba(255, 255, 255, 0.5);
}

.what-is-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.what-is-text p {
    font-size: 16px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 20px;
}

.what-is-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(79, 70, 229, 0.15);
}

/* ==========================================
   HOW IT WORKS
   ========================================== */
.how-it-works {
    padding: 60px 0;
}

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

.accordion-item {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    margin-bottom: 16px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.08);
}

.accordion-header {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    transition: background 0.3s ease;
    min-height: 44px;
}

.accordion-header:active {
    background: rgba(79, 70, 229, 0.05);
}

.accordion-icon {
    font-size: 28px;
    font-weight: 300;
    color: #4F46E5;
    transition: transform 0.3s ease;
}

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

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.accordion-item.active .accordion-content {
    max-height: 500px;
    padding: 0 24px 24px;
}

.accordion-content p {
    font-size: 15px;
    color: #666;
    line-height: 1.7;
}

/* ==========================================
   CUSTOMER REVIEWS
   ========================================== */
.reviews {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03), rgba(6, 182, 212, 0.03));
}

.reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.review-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 32px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(79, 70, 229, 0.1);
}

.review-image {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid #4F46E5;
}

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

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

.review-content h3 {
    font-size: 20px;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.review-location {
    font-size: 14px;
    color: #888;
    margin-bottom: 12px;
}

.review-stars {
    color: #FFD700;
    font-size: 20px;
    margin-bottom: 16px;
    letter-spacing: 4px;
}

.review-text {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
    font-style: italic;
}

/* ==========================================
   PRICING SECTION
   ========================================== */
.pricing {
    padding: 60px 0;
    background: rgba(255, 255, 255, 0.7);
}

.pricing-subtitle {
    text-align: center;
    font-size: 18px;
    color: #666;
    margin-bottom: 40px;
}

.countdown-timer {
    max-width: 500px;
    margin: 0 auto 50px;
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    padding: 24px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(79, 70, 229, 0.3);
}

.timer-label {
    text-align: center;
    color: white;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.timer-display {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
}

.timer-box {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 16px 24px;
    border-radius: 12px;
    text-align: center;
    min-width: 100px;
}

.timer-box span:first-child {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: white;
    line-height: 1;
    margin-bottom: 8px;
}

.timer-text {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.9);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timer-separator {
    font-size: 36px;
    color: white;
    font-weight: 700;
}

.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 40px;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 32px 24px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(79, 70, 229, 0.1);
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-card.popular {
    border: 3px solid #4F46E5;
    box-shadow: 0 12px 48px rgba(79, 70, 229, 0.2);
}

.popular-badge {
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    color: white;
    padding: 8px 24px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-label {
    text-align: center;
    font-size: 16px;
    font-weight: 700;
    color: #4F46E5;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pricing-bottles {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.pricing-supply {
    text-align: center;
    font-size: 14px;
    color: #888;
    margin-bottom: 24px;
}

.pricing-image {
    text-align: center;
    margin: 24px 0;
}

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

.pricing-price {
    text-align: center;
    margin-bottom: 16px;
}

.price-per {
    font-size: 40px;
    font-weight: 700;
    color: #4F46E5;
    display: block;
    line-height: 1;
}

.price-label {
    font-size: 14px;
    color: #888;
}

.pricing-total {
    text-align: center;
    margin-bottom: 16px;
}

.old-price {
    font-size: 20px;
    color: #999;
    text-decoration: line-through;
    margin-right: 12px;
}

.new-price {
    font-size: 32px;
    font-weight: 700;
    color: #1a1a1a;
}

.bonus-badges {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.bonus-badge {
    background: linear-gradient(135deg, #10B981, #059669);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-btn {
    display: block;
    margin-bottom: 20px;
}

.atc-img {
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.atc-img:active {
    transform: scale(0.98);
}

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

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

.rating-section {
    text-align: center;
    margin-top: 40px;
}

.rating-section img {
    max-width: 200px;
    margin: 0 auto 12px;
}

.rating-section p {
    font-size: 16px;
    color: #666;
    font-weight: 600;
}

/* ==========================================
   INGREDIENTS
   ========================================== */
.ingredients {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.02), rgba(6, 182, 212, 0.02));
}

.ingredients-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.ingredient-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 24px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.08);
}

.ingredient-card h3 {
    font-size: 20px;
    color: #4F46E5;
    margin-bottom: 12px;
}

.ingredient-card p {
    font-size: 15px;
    color: #666;
    line-height: 1.7;
}

/* ==========================================
   SCIENTIFIC EVIDENCE
   ========================================== */
.scientific-evidence {
    padding: 60px 0;
}

.evidence-intro {
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
}

.evidence-intro p {
    font-size: 16px;
    color: #555;
    line-height: 1.7;
}

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

.evidence-item {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    margin-bottom: 16px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.08);
}

.evidence-header {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    transition: background 0.3s ease;
    min-height: 44px;
}

.evidence-header:active {
    background: rgba(79, 70, 229, 0.05);
}

.evidence-icon {
    font-size: 28px;
    font-weight: 300;
    color: #4F46E5;
    transition: transform 0.3s ease;
}

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

.evidence-content-box {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.evidence-item.active .evidence-content-box {
    max-height: 500px;
    padding: 0 24px 24px;
}

.evidence-content-box p {
    font-size: 15px;
    color: #666;
    line-height: 1.7;
}

/* ==========================================
   GUARANTEE
   ========================================== */
.guarantee {
    padding: 60px 0;
    background: rgba(255, 255, 255, 0.5);
}

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

.guarantee-image {
    max-width: 300px;
}

.guarantee-image img {
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(79, 70, 229, 0.15);
}

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

.guarantee-point {
    margin-bottom: 32px;
}

.guarantee-point h3 {
    font-size: 22px;
    color: #4F46E5;
    margin-bottom: 12px;
}

.guarantee-point p {
    font-size: 16px;
    color: #555;
    line-height: 1.7;
}

/* ==========================================
   BENEFITS
   ========================================== */
.benefits {
    padding: 60px 0;
}

.benefits-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.benefit-item {
    display: flex;
    gap: 20px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 24px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.08);
    align-items: flex-start;
}

.benefit-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-size: 24px;
    font-weight: 700;
}

.benefit-content h3 {
    font-size: 20px;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.benefit-content p {
    font-size: 15px;
    color: #666;
    line-height: 1.6;
}

/* ==========================================
   FAQ SECTION
   ========================================== */
.faq {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.02), rgba(6, 182, 212, 0.02));
}

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

.faq-item {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    margin-bottom: 16px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.08);
}

.faq-header {
    width: 100%;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    transition: background 0.3s ease;
    min-height: 44px;
    text-align: left;
}

.faq-header:active {
    background: rgba(79, 70, 229, 0.05);
}

.faq-icon {
    font-size: 28px;
    font-weight: 300;
    color: #4F46E5;
    transition: transform 0.3s ease;
    min-width: 28px;
}

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

.faq-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-content {
    max-height: 1000px;
    padding: 0 24px 24px;
}

.faq-content p {
    font-size: 15px;
    color: #666;
    line-height: 1.7;
}

/* ==========================================
   FINAL CTA
   ========================================== */
.final-cta {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05), rgba(6, 182, 212, 0.05));
}

.final-cta-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
    align-items: center;
    text-align: center;
}

.final-cta-image {
    max-width: 300px;
}

.final-cta-text h2 {
    font-size: 28px;
    color: #1a1a1a;
    margin-bottom: 30px;
    line-height: 1.3;
}

.final-price {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
}

.final-regular-price {
    font-size: 18px;
    color: #888;
}

.final-regular-price del {
    font-size: 22px;
    color: #999;
}

.final-special-price {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.final-cta-btn {
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    color: white;
    padding: 20px 48px;
    border-radius: 50px;
    font-size: 20px;
    font-weight: 600;
    display: inline-block;
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.3);
    min-height: 60px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}

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

.final-guarantee {
    font-size: 14px;
    color: #666;
    margin-top: 20px;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: linear-gradient(135deg, #1a1a1a, #2a2a2a);
    color: white;
    padding: 50px 0 30px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
    text-align: center;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.footer-links a {
    color: white;
    font-size: 15px;
    transition: color 0.3s ease;
    padding: 8px;
}

.footer-links a:hover {
    color: #06B6D4;
}

.footer-disclaimer {
    font-size: 13px;
    color: #ccc;
    line-height: 1.7;
    max-width: 900px;
    margin: 0 auto;
}

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

.footer-social a {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    transform: translateY(-3px);
}

.footer-copyright {
    font-size: 14px;
    color: #999;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==========================================
   SCROLL TO TOP BUTTON
   ========================================== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #4F46E5, #06B6D4);
    color: white;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.3);
    cursor: pointer;
    transition: transform 0.3s ease;
    z-index: 998;
}

.scroll-to-top.visible {
    display: flex;
}

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

/* ==========================================
   PURCHASE NOTIFICATION
   ========================================== */
.purchase-notification {
    position: fixed;
    bottom: 30px;
    left: 20px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    padding: 16px 20px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    transform: translateX(-120%);
    transition: transform 0.5s ease;
    z-index: 997;
    max-width: calc(100% - 40px);
}

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

.notification-content {
    display: flex;
    gap: 12px;
    align-items: center;
}

.notification-icon {
    width: 32px;
    height: 32px;
    min-width: 32px;
    background: #10B981;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
}

.notification-text {
    font-size: 14px;
}

.notification-text strong {
    display: block;
    color: #1a1a1a;
    margin-bottom: 4px;
}

.notification-text span {
    color: #666;
    font-size: 13px;
}

/* ==========================================
   TABLET BREAKPOINT (576px)
   ========================================== */
@media (min-width: 576px) {
    .why-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ingredients-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-links {
        flex-direction: row;
        justify-content: center;
    }
}

/* ==========================================
   TABLET BREAKPOINT (768px)
   ========================================== */
@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
    
    .nav-cta-btn {
        display: inline-block;
    }
    
    .hamburger {
        display: none;
    }
    
    .hero {
        padding: 80px 0;
    }
    
    .hero-container {
        flex-direction: row;
        text-align: left;
    }
    
    .hero-content {
        text-align: left;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-description {
        font-size: 17px;
    }
    
    .section-title {
        font-size: 36px;
    }
    
    .what-is-content {
        flex-direction: row;
        align-items: center;
    }
    
    .what-is-text {
        flex: 1;
    }
    
    .what-is-image {
        flex: 1;
    }
    
    .guarantee-content {
        flex-direction: row;
        text-align: left;
    }
    
    .guarantee-text {
        text-align: left;
        flex: 1;
    }
    
    .guarantee-image {
        flex: 0 0 300px;
    }
    
    .final-cta-content {
        flex-direction: row;
    }
    
    .final-cta-text {
        text-align: left;
    }
    
    .final-cta-text h2 {
        font-size: 36px;
    }
}

/* ==========================================
   LARGE TABLET / SMALL LAPTOP (992px)
   ========================================== */
@media (min-width: 992px) {
    .why-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .ingredients-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ==========================================
   DESKTOP BREAKPOINT (1024px+)
   ========================================== */
@media (min-width: 1024px) {
    .hero-title {
        font-size: 48px;
    }
    
    .section-title {
        font-size: 40px;
    }
    
    .hero-product-img {
        max-width: 400px;
    }
    
    .final-cta-image {
        max-width: 400px;
    }
}

/* ==========================================
   REDUCE MOTION PREFERENCE
   ========================================== */
@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;
    }
}