/* ========================================
   ERETURBO LANDING PAGE - STYLES.CSS
   Modern Gradient Design Theme
   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: #1a1a1a;
    background: #ffffff;
    overflow-x: hidden;
}

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

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

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

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

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

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

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

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

/* ========================================
   SECTION HEADINGS
======================================== */

.section-heading {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (min-width: 768px) {
    .section-heading {
        font-size: 36px;
        margin-bottom: 30px;
    }
}

@media (min-width: 1024px) {
    .section-heading {
        font-size: 42px;
        margin-bottom: 40px;
    }
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    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 {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(79, 70, 229, 0.15);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    max-width: 1400px;
}

.logo h2 {
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: none;
    gap: 30px;
    align-items: center;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: #1a1a1a;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    transition: width 0.3s ease;
}

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

.nav-cta-btn {
    padding: 10px 24px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    color: #ffffff;
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.nav-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(79, 70, 229, 0.4);
}

/* Hamburger Menu */
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    border-radius: 2px;
    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 */
@media (max-width: 767px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 300px;
        height: 100vh;
        background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
        flex-direction: column;
        padding: 80px 30px 30px;
        gap: 25px;
        transition: right 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.3);
    }

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

    .nav-link {
        color: #ffffff;
        font-size: 18px;
        width: 100%;
        padding: 12px 0;
    }

    .nav-link::after {
        background: #ffffff;
    }

    .nav-cta-btn {
        width: 100%;
        text-align: center;
        padding: 14px 0;
        background: rgba(255, 255, 255, 0.2);
        backdrop-filter: blur(10px);
        border: 2px solid #ffffff;
    }
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }

    .hamburger {
        display: none;
    }
}

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

.hero-section {
    margin-top: 70px;
    padding: 40px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    position: relative;
    overflow: hidden;
}

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

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(30px, -30px) rotate(90deg); }
    50% { transform: translate(0, -60px) rotate(180deg); }
    75% { transform: translate(-30px, -30px) rotate(270deg); }
}

.hero-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-image {
    width: 100%;
    max-width: 400px;
    order: 1;
}

.product-showcase {
    position: relative;
    animation: heroProductEntry 1s ease-out;
}

@keyframes heroProductEntry {
    0% {
        opacity: 0;
        transform: scale(0.8) translateY(30px);
    }
    60% {
        transform: scale(1.05) translateY(-10px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.hero-product-img {
    width: 100%;
    filter: drop-shadow(0 20px 60px rgba(79, 70, 229, 0.3));
    animation: productFloat 3s ease-in-out infinite;
}

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

.floating-badge {
    position: absolute;
    top: 10%;
    right: -10px;
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: #ffffff;
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
    animation: badgePulse 2s ease-in-out infinite;
}

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

.hero-content {
    width: 100%;
    order: 2;
    text-align: center;
}

.hero-headline {
    font-size: 32px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

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

.hero-description {
    font-size: 16px;
    line-height: 1.7;
    color: #4a5568;
    margin-bottom: 15px;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    color: #ffffff;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    margin: 20px 0;
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.4);
    transition: all 0.3s ease;
    animation: fadeInUp 0.8s ease-out 0.6s both;
    min-height: 48px;
}

.hero-cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(79, 70, 229, 0.5);
}

.hero-cta-btn:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-arrow {
    transition: transform 0.3s ease;
}

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

.trust-indicators {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-top: 30px;
    animation: fadeInUp 0.8s ease-out 0.8s both;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: #4a5568;
}

.trust-icon {
    color: #4F46E5;
}

@media (min-width: 768px) {
    .hero-section {
        padding: 60px 0;
    }

    .hero-container {
        flex-direction: row;
        gap: 50px;
    }

    .hero-image {
        width: 45%;
        order: 1;
    }

    .hero-content {
        width: 55%;
        order: 2;
        text-align: left;
    }

    .hero-headline {
        font-size: 42px;
    }

    .hero-description {
        font-size: 17px;
    }

    .trust-indicators {
        justify-content: flex-start;
    }
}

@media (min-width: 1024px) {
    .hero-headline {
        font-size: 48px;
    }

    .hero-description {
        font-size: 18px;
    }
}

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

.why-choose-section {
    padding: 60px 0;
    background: #ffffff;
}

.badges-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 40px;
}

.badge-card {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    padding: 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 2px solid transparent;
    opacity: 0;
    transform: translateY(30px);
}

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

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

.badge-card:hover {
    transform: translateY(-10px) rotate(2deg) scale(1.05);
    box-shadow: 0 20px 60px rgba(79, 70, 229, 0.2);
    border-color: rgba(79, 70, 229, 0.3);
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
}

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

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

.badge-title {
    font-size: 18px;
    font-weight: 700;
    color: #4F46E5;
    margin-bottom: 15px;
}

.badge-description {
    font-size: 15px;
    line-height: 1.7;
    color: #4a5568;
}

@media (min-width: 576px) {
    .badges-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

@media (min-width: 992px) {
    .badges-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

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

.what-is-section {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
}

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

.what-is-content {
    width: 100%;
}

.what-is-text {
    font-size: 16px;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 20px;
}

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

.what-is-img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(79, 70, 229, 0.15);
}

@media (min-width: 768px) {
    .what-is-container {
        flex-direction: row;
    }

    .what-is-content {
        width: 55%;
    }

    .what-is-image {
        width: 45%;
    }
}

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

.how-it-works-section {
    padding: 60px 0;
    background: #ffffff;
}

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

.accordion-item {
    margin-bottom: 15px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    border-radius: 15px;
    overflow: hidden;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.accordion-item:hover {
    border-color: rgba(79, 70, 229, 0.2);
}

.accordion-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 48px;
}

.accordion-header:hover {
    background: rgba(79, 70, 229, 0.08);
}

.accordion-title {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    text-align: left;
}

.accordion-icon {
    color: #4F46E5;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.accordion-header[aria-expanded="true"] .accordion-icon {
    transform: rotate(180deg);
}

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

.accordion-header[aria-expanded="true"] + .accordion-content {
    max-height: 500px;
    padding: 0 25px 25px;
}

.accordion-content p {
    font-size: 15px;
    line-height: 1.7;
    color: #4a5568;
}

@media (min-width: 768px) {
    .accordion-title {
        font-size: 20px;
    }

    .accordion-content p {
        font-size: 16px;
    }
}

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

.reviews-section {
    padding: 60px 0;
    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: 30px;
    margin-top: 40px;
}

.review-card {
    background: #ffffff;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(79, 70, 229, 0.1);
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateY(30px);
}

.review-card.animate-in {
    animation: reviewFadeIn 0.8s ease-out forwards;
}

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

.review-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(79, 70, 229, 0.2);
}

.review-image {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

.reviewer-img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #4F46E5;
}

.review-rating {
    display: flex;
    justify-content: center;
    gap: 5px;
    margin-bottom: 15px;
}

.reviewer-name {
    font-size: 20px;
    font-weight: 700;
    color: #1a1a1a;
    text-align: center;
    margin-bottom: 5px;
}

.reviewer-location {
    font-size: 14px;
    color: #6b7280;
    text-align: center;
    margin-bottom: 15px;
}

.review-text {
    font-size: 15px;
    line-height: 1.7;
    color: #4a5568;
    text-align: center;
    margin-bottom: 15px;
}

.review-verified {
    font-size: 13px;
    color: #10B981;
    text-align: center;
    font-weight: 600;
}

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

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

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

.pricing-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    color: #ffffff;
}

.pricing-section-2 {
    margin-top: 60px;
}

.pricing-subheading {
    text-align: center;
    font-size: 18px;
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.9);
}

.pricing-section .section-heading {
    color: #ffffff;
    -webkit-text-fill-color: #ffffff;
}

/* Countdown Timer */
.countdown-timer {
    max-width: 500px;
    margin: 0 auto 40px;
    text-align: center;
}

.timer-label {
    font-size: 16px;
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.9);
}

.timer-display {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 15px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.timer-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.timer-value {
    font-size: 48px;
    font-weight: 800;
    line-height: 1;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.timer-text {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 5px;
    color: rgba(255, 255, 255, 0.8);
}

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

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-top: 40px;
}

.pricing-card {
    background: #ffffff;
    padding: 30px 25px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.popular-card {
    border: 3px solid #FFD700;
    transform: scale(1);
}

.popular-card:hover {
    transform: scale(1.05) translateY(-10px);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #1a1a1a;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 800;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
}

.pricing-label {
    font-size: 14px;
    font-weight: 700;
    color: #4F46E5;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.pricing-bottle-count {
    font-size: 24px;
    font-weight: 800;
    color: #1a1a1a;
    margin-bottom: 5px;
}

.pricing-supply {
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 20px;
}

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

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

.pricing-per-bottle {
    font-size: 32px;
    font-weight: 800;
    color: #4F46E5;
    margin-bottom: 10px;
}

.per-text {
    font-size: 16px;
    font-weight: 400;
    color: #6b7280;
}

.pricing-total {
    margin-bottom: 15px;
}

.old-price {
    font-size: 20px;
    color: #6b7280;
    text-decoration: line-through;
    margin-right: 10px;
}

.new-price {
    font-size: 28px;
    font-weight: 800;
    color: #10B981;
}

.pricing-bonuses {
    margin: 15px 0;
}

.bonus-badge {
    display: inline-block;
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: #ffffff;
    padding: 6px 15px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
    margin: 5px;
}

.pricing-cta-btn {
    display: block;
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    color: #ffffff;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    margin: 20px 0;
    transition: all 0.3s ease;
    min-height: 50px;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.pricing-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(79, 70, 229, 0.4);
}

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

.popular-btn {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: #1a1a1a;
}

.payment-logos {
    margin-top: 20px;
}

.payment-img {
    max-width: 250px;
    margin: 0 auto;
}

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

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

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

@media (min-width: 992px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

.ingredients-section {
    padding: 60px 0;
    background: #ffffff;
}

.ingredients-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 40px;
}

.ingredient-card {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    padding: 25px;
    border-radius: 15px;
    border-left: 4px solid #4F46E5;
    transition: all 0.3s ease;
}

.ingredient-card:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.15);
}

.ingredient-name {
    font-size: 20px;
    font-weight: 700;
    color: #4F46E5;
    margin-bottom: 12px;
}

.ingredient-description {
    font-size: 15px;
    line-height: 1.7;
    color: #4a5568;
    margin-bottom: 12px;
}

.ingredient-benefits {
    font-size: 14px;
    line-height: 1.6;
    color: #6b7280;
}

@media (min-width: 768px) {
    .ingredients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
}

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

.scientific-section {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
}

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

.scientific-item {
    margin-bottom: 15px;
    background: #ffffff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.1);
}

.scientific-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 48px;
}

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

.scientific-title {
    font-size: 17px;
    font-weight: 600;
    color: #1a1a1a;
    text-align: left;
}

.scientific-header[aria-expanded="true"] .accordion-icon {
    transform: rotate(180deg);
}

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

.scientific-header[aria-expanded="true"] + .scientific-content {
    max-height: 500px;
    padding: 0 25px 25px;
}

.scientific-content p {
    font-size: 15px;
    line-height: 1.8;
    color: #4a5568;
}

@media (min-width: 768px) {
    .scientific-title {
        font-size: 19px;
    }

    .scientific-content p {
        font-size: 16px;
    }
}

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

.guarantee-section {
    padding: 60px 0;
    background: #ffffff;
}

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

.guarantee-image {
    width: 100%;
    max-width: 400px;
}

.guarantee-img {
    width: 100%;
    filter: drop-shadow(0 15px 40px rgba(79, 70, 229, 0.2));
}

.guarantee-content {
    width: 100%;
}

.guarantee-point {
    margin-bottom: 30px;
}

.guarantee-title {
    font-size: 22px;
    font-weight: 700;
    color: #4F46E5;
    margin-bottom: 12px;
}

.guarantee-text {
    font-size: 16px;
    line-height: 1.8;
    color: #4a5568;
}

@media (min-width: 768px) {
    .guarantee-container {
        flex-direction: row;
    }

    .guarantee-image {
        width: 40%;
    }

    .guarantee-content {
        width: 60%;
    }
}

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

.benefits-section {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.03) 0%, rgba(6, 182, 212, 0.03) 100%);
}

.benefits-list {
    max-width: 800px;
    margin: 40px auto 0;
}

.benefit-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 30px;
    padding: 20px;
    background: #ffffff;
    border-radius: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.08);
}

.benefit-item:hover {
    transform: translateX(10px);
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.15);
}

.benefit-icon {
    color: #10B981;
    flex-shrink: 0;
}

.benefit-text {
    flex: 1;
}

.benefit-title {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.benefit-description {
    font-size: 15px;
    line-height: 1.6;
    color: #6b7280;
}

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

.faq-section {
    padding: 60px 0;
    background: #ffffff;
}

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

.faq-item {
    margin-bottom: 15px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    border-radius: 15px;
    overflow: hidden;
}

.faq-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    min-height: 48px;
}

.faq-header:hover {
    background: rgba(79, 70, 229, 0.08);
}

.faq-question {
    font-size: 18px;
    font-weight: 600;
    color: #1a1a1a;
    text-align: left;
}

.faq-header[aria-expanded="true"] .accordion-icon {
    transform: rotate(180deg);
}

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

.faq-header[aria-expanded="true"] + .faq-content {
    max-height: 600px;
    padding: 0 25px 25px;
}

.faq-content p {
    font-size: 15px;
    line-height: 1.7;
    color: #4a5568;
}

@media (min-width: 768px) {
    .faq-question {
        font-size: 20px;
    }

    .faq-content p {
        font-size: 16px;
    }
}

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

.final-cta-section {
    padding: 60px 0;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    position: relative;
    overflow: hidden;
}

.final-cta-section::before {
    content: '';
    position: absolute;
    bottom: -50%;
    left: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite reverse;
}

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

.final-cta-image {
    width: 100%;
    max-width: 400px;
}

.final-cta-img {
    width: 100%;
    filter: drop-shadow(0 20px 60px rgba(79, 70, 229, 0.3));
    animation: finalProductFloat 3s ease-in-out infinite;
}

@keyframes finalProductFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(2deg); }
}

.final-cta-content {
    width: 100%;
    text-align: center;
}

.final-cta-heading {
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 25px;
}

.final-cta-pricing {
    margin-bottom: 30px;
}

.final-regular-price {
    font-size: 18px;
    color: #6b7280;
    margin-bottom: 10px;
}

.strike-price {
    text-decoration: line-through;
    color: #EF4444;
}

.final-special-price {
    font-size: 24px;
    font-weight: 700;
    color: #1a1a1a;
}

.highlight-price {
    font-size: 36px;
    font-weight: 900;
    color: #10B981;
}

.final-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 50px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    color: #ffffff;
    border-radius: 50px;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 30px;
    box-shadow: 0 10px 40px rgba(79, 70, 229, 0.4);
    transition: all 0.3s ease;
    min-height: 48px;
}

.final-cta-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(79, 70, 229, 0.5);
}

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

.final-cta-assurance {
    text-align: center;
}

.final-cta-assurance p {
    font-size: 15px;
    color: #4a5568;
    margin-bottom: 8px;
}

@media (min-width: 768px) {
    .final-cta-container {
        flex-direction: row;
        text-align: left;
    }

    .final-cta-image {
        width: 40%;
    }

    .final-cta-content {
        width: 60%;
        text-align: left;
    }

    .final-cta-heading {
        font-size: 36px;
    }

    .final-cta-assurance {
        text-align: left;
    }
}

@media (min-width: 1024px) {
    .final-cta-heading {
        font-size: 42px;
    }
}

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

.footer {
    padding: 50px 0 30px;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d3748 100%);
    color: #ffffff;
}

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

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

.footer-link {
    color: #ffffff;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.footer-separator {
    color: rgba(255, 255, 255, 0.3);
}

.footer-disclaimer {
    max-width: 900px;
    margin: 0 auto 30px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.footer-disclaimer p {
    font-size: 13px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
}

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

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

.social-link:hover {
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    transform: translateY(-3px);
}

.footer-copyright {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

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

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

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

.scroll-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.5);
}

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

.purchase-notification {
    position: fixed;
    bottom: -100px;
    left: 20px;
    background: #ffffff;
    padding: 15px 20px;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 15px;
    max-width: calc(100% - 40px);
    z-index: 998;
    transition: bottom 0.4s ease;
}

.purchase-notification.show {
    bottom: 30px;
}

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

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

.notification-text {
    display: flex;
    flex-direction: column;
    font-size: 14px;
}

.notification-text strong {
    color: #4F46E5;
    font-weight: 700;
}

.notification-text span {
    color: #6b7280;
    font-size: 13px;
}

.notification-close {
    font-size: 20px;
    color: #6b7280;
    cursor: pointer;
    transition: color 0.3s ease;
    padding: 5px;
}

.notification-close:hover {
    color: #1a1a1a;
}

@media (min-width: 576px) {
    .purchase-notification {
        max-width: 350px;
    }
}

/* ========================================
   CTA POPUP
======================================== */

.cta-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 20px;
}

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

.cta-popup-content {
    background: #ffffff;
    padding: 40px 30px;
    border-radius: 20px;
    max-width: 500px;
    width: 100%;
    text-align: center;
    position: relative;
    transform: scale(0.8);
    transition: transform 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.cta-popup.show .cta-popup-content {
    transform: scale(1);
}

.popup-close {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 28px;
    color: #6b7280;
    cursor: pointer;
    transition: color 0.3s ease;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.popup-close:hover {
    color: #1a1a1a;
}

.popup-heading {
    font-size: 26px;
    font-weight: 800;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.popup-text {
    font-size: 16px;
    color: #4a5568;
    margin-bottom: 25px;
}

.popup-product {
    margin-bottom: 25px;
}

.popup-img {
    max-width: 250px;
    margin: 0 auto;
}

.popup-cta-btn {
    display: inline-block;
    padding: 16px 40px;
    background: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    color: #ffffff;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 15px;
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.4);
    transition: all 0.3s ease;
    min-height: 48px;
}

.popup-cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(79, 70, 229, 0.5);
}

.popup-guarantee {
    font-size: 14px;
    color: #10B981;
    font-weight: 600;
}

/* Mobile Popup Optimization */
@media (max-width: 575px) {
    .cta-popup {
        align-items: flex-end;
    }

    .cta-popup-content {
        border-radius: 20px 20px 0 0;
        padding: 30px 20px;
        max-height: 80vh;
        overflow-y: auto;
    }

    .popup-heading {
        font-size: 22px;
    }

    .popup-text {
        font-size: 15px;
    }
}

/* ========================================
   ANIMATIONS FOR REDUCED MOTION
======================================== */

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

/* ========================================
   LOADING STATES
======================================== */

img {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
}

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

@media print {
    .navbar,
    .scroll-to-top,
    .purchase-notification,
    .cta-popup {
        display: none !important;
    }
}