/* styles.css */
:root {
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;
    --secondary-color: #7C3AED;
    --secondary-light: #A78BFA;
    --text-color: #1F2937;
    --text-light: #6B7280;
    --background-light: #F9FAFB;
    --background-dark: #F3F4F6;
    --background-white: #FFFFFF;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--primary-dark);
}

ul, ol {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 2rem;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    margin-bottom: 1rem;
}

h4 {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: 0.75rem;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.subtitle {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    color: var(--text-color);
    margin-bottom: 1.5rem;
}

/* Header & Navigation */
header {
    background-color: var(--background-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition);
}

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

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--background-white);
    box-shadow: var(--shadow-md);
    padding: 1rem 0;
    transition: transform 0.3s ease-in-out;
    z-index: 100;
}

.main-nav.active {
    display: block;
    animation: slideDown 0.3s ease-in-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main-nav ul {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 0 1.5rem;
}

.main-nav ul li a {
    display: block;
    padding: 0.5rem 0;
    color: var(--text-color);
    font-weight: 500;
    transition: var(--transition);
}

.main-nav ul li a:hover {
    color: var(--primary-color);
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 101;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    transition: var(--transition);
    transform-origin: left center;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg);
}

/* Language Selector */
.language-selector {
    position: relative;
    cursor: pointer;
    user-select: none;
}

.selected-language {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.selected-language:hover {
    background-color: var(--background-dark);
}

.flag-icon {
    width: 20px;
    height: 16px;
    object-fit: cover;
    border-radius: 2px;
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    width: 200px;
    background-color: var(--background-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 200;
    max-height: 300px;
    overflow-y: auto;
}

.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-dropdown li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.language-dropdown li:hover {
    background-color: var(--background-dark);
}

/* CTA Button */
.cta-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary-color));
    color: white;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #4338CA, #6D28D9);
    color: white;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}

.hero-content {
    z-index: 2;
}

.hero h1, .hero p {
    color: white;
}

.hero h1 {
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    color: white;
}

.hero .cta-button {
    margin-top: 1rem;
    background: white;
    color: var(--primary-color);
}

.hero .cta-button:hover {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-dark);
}

.hero-image {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    background-color: white;
    padding: 1rem;
    transform: perspective(1000px) rotateY(-15deg);
    transition: var(--transition);
}

.hero-image img:hover {
    transform: perspective(1000px) rotateY(0);
}

.credibility {
    font-style: italic;
    opacity: 0.9;
    margin-bottom: 2rem;
}

/* Sections Styling */
section {
    padding: 4rem 0;
}

section:nth-child(odd) {
    background-color: var(--background-white);
}

section:nth-child(even) {
    background-color: var(--background-light);
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background-color: var(--background-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.card-icon {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: var(--background-light);
    border-radius: 50%;
    transition: var(--transition);
}

.card:hover .card-icon {
    transform: scale(1.1);
}

/* Flex Container */
.flex-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}

.flex-container .content, .flex-container .image {
    width: 100%;
}

.reverse {
    flex-direction: column-reverse;
}

.image img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.image img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* Features */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.feature-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--background-light);
    border-radius: 50%;
    transition: var(--transition);
}

.feature:hover .feature-icon {
    transform: scale(1.1);
}

.feature h4 {
    margin-bottom: 0.5rem;
}

/* Ingredients Grid */
.ingredients-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.ingredient-card {
    background-color: var(--background-white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-align: center;
}

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

.support-text {
    margin-top: 2rem;
    text-align: center;
    padding: 0 1rem;
}

/* Benefits Grid */
.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.benefit-card {
    background-color: var(--background-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

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

.benefit-icon {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background-color: var(--background-light);
    border-radius: 50%;
    transition: var(--transition);
}

.benefit-card:hover .benefit-icon {
    transform: scale(1.1);
}

/* Progress Bars */
.progress-container {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.progress-item h4 {
    margin-bottom: 0.5rem;
}

.progress-bar-container {
    height: 10px;
    background-color: var(--background-light);
    border-radius: 5px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 5px;
    width: 0;
    position: relative;
    transition: width 1.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.progress-bar.animate {
    width: var(--width, 0);
}

.progress-bar::after {
    content: attr(data-percentage);
    position: absolute;
    right: 0;
    top: -25px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-color);
}

/* Testimonials */
.testimonial-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 2rem;
}

.testimonial {
    background-color: var(--background-white);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.testimonial::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

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

.testimonial-content {
    margin-bottom: 1.5rem;
}

.testimonial-icon {
    margin-bottom: 1rem;
}

.rating {
    margin-top: 1rem;
    display: flex;
    gap: 0.25rem;
}

.star {
    color: #FBBF24;
    font-size: 1.25rem;
}

.star.half {
    position: relative;
    display: inline-block;
}

.star.half::after {
    content: '☆';
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    overflow: hidden;
    color: var(--background-light);
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    border-top: 1px solid var(--background-dark);
    padding-top: 1rem;
}

.testimonial-author h3 {
    margin-bottom: 0.25rem;
}

.testimonial-author p {
    margin-bottom: 0;
    font-size: 0.875rem;
    color: var(--text-light);
}

/* FAQ Section */
.faq-grid {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

details {
    background-color: var(--background-white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

details:hover {
    box-shadow: var(--shadow-md);
}

summary {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    position: relative;
}

summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-color);
}

details[open] summary::after {
    content: '−';
}

.faq-content {
    padding: 0 1.5rem 1.5rem;
}

.faq-content p {
    margin-bottom: 0;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #4338CA, #6D28D9);
    color: white;
    text-align: center;
    padding: 4rem 0;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-section h2, .cta-section p {
    color: white;
}

.cta-section h2::after {
    left: 50%;
    transform: translateX(-50%);
}

.cta-section .cta-button {
    background: white;
    color: var(--primary-color);
    margin-top: 2rem;
}

.cta-section .cta-button:hover {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-dark);
}

/* Footer */
footer {
    background-color: #1F2937;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
    display: inline-block;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.7);
}

.footer-nav h3 {
    color: white;
    margin-bottom: 1.5rem;
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-nav ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-nav ul li a:hover {
    color: white;
}

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

.disclaimer {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 1.5rem;
}

.copyright {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    margin-bottom: 0;
}

/* Media Queries */
@media (min-width: 768px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .flex-container {
        flex-direction: row;
    }
    
    .flex-container .content, .flex-container .image {
        width: 50%;
    }
    
    .reverse {
        flex-direction: row-reverse;
    }
    
    .ingredients-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .testimonial-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .hero-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .menu-toggle {
        display: none;
    }
    
    .main-nav {
        display: block;
        position: static;
        width: auto;
        box-shadow: none;
        padding: 0;
        margin-right: 1.5rem;
    }
    
    .main-nav ul {
        flex-direction: row;
        gap: 2rem;
        padding: 0;
    }
    
    .header-container {
        justify-content: flex-start;
    }
    
    .logo {
        margin-right: auto;
    }
    
    .footer-content {
        grid-template-columns: 2fr 1fr;
    }
    
    .faq-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

/* Animations and Effects */

/* Shimmer Loading Effect */
.shimmer {
    position: relative;
    overflow: hidden;
}

.shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.6) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: translateX(-100%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    100% {
        transform: translateX(100%);
    }
}

/* Glass Effect for Cards */
.glass-card {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 3D Transform on Hover */
.transform-3d {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.transform-3d:hover {
    transform: translateY(-5px) rotateX(5deg);
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.1);
}

/* Clip Path Animation */
.clip-path-animate {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    transition: clip-path 0.5s ease;
}

.clip-path-animate:hover {
    clip-path: polygon(10% 0, 100% 0, 90% 100%, 0 100%);
}

/* Accessibility Improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus Styles for Accessibility */
a:focus, button:focus, [tabindex="0"]:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Reduce Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}