/* styles.css */
:root {
    --primary-color: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #A5B4FC;
    --secondary-color: #10B981;
    --text-color: #1F2937;
    --text-light: #4B5563;
    --text-lighter: #9CA3AF;
    --background-color: #FFFFFF;
    --background-alt: #F9FAFB;
    --background-dark: #F3F4F6;
    --border-color: #E5E7EB;
    --success-color: #4CAF50;
    --warning-color: #FF9800;
    --error-color: #EF4444;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --transition: all 0.3s ease;
    --border-radius: 8px;
    --container-width: 1200px;
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    line-height: 1.5;
}

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
        Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    overflow-x: hidden;
    font-display: swap;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

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;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    color: var(--primary-color);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    color: var(--text-color);
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

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

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

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

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
}

/* ============ Button Styles ============ */
.cta-button {
    display: inline-block;
    padding: 0.9rem 2rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
    color: white;
}

.cta-button:active {
    transform: translateY(1px);
}

.cta-button.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
    }
}

/* ============ Header Styles ============ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

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

.main-nav {
    display: flex;
    align-items: center;
}

.desktop-nav ul {
    display: flex;
    gap: 2rem;
}

.desktop-nav a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

.desktop-nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

/* Language Selector */
.language-selector {
    position: relative;
    margin: 0 1.5rem;
}

.language-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--background-dark);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.language-button:hover {
    background-color: var(--border-color);
}

.language-button img {
    width: 20px;
    height: 15px;
    border-radius: 2px;
    object-fit: cover;
}

.language-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 180px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 10;
    max-height: 300px;
    overflow-y: auto;
}

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

.language-menu li {
    padding: 0;
}

.language-menu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    transition: var(--transition);
    color: var(--text-color);
    font-size: 0.9rem;
}

.language-menu a:hover {
    background-color: var(--background-alt);
}

.language-menu img {
    width: 20px;
    height: 15px;
    border-radius: 2px;
    object-fit: cover;
}

/* Mobile Menu */
.hamburger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 10;
}

.hamburger-menu span {
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    transition: var(--transition);
}

.hamburger-menu.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

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

.hamburger-menu.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

.mobile-menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: white;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-in-out;
}

.mobile-menu.active {
    max-height: 300px;
}

.mobile-menu ul {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.mobile-menu a {
    color: var(--text-color);
    font-weight: 500;
    font-size: 1.1rem;
}

/* ============ Hero Section ============ */
.hero-section {
    padding-top: calc(var(--header-height) + 3rem);
    padding-bottom: 5rem;
    background: linear-gradient(135deg, #F9FAFB 0%, #EEF2FF 100%);
    border-radius: 0 0 0 100px;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-text {
    max-width: 600px;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.credibility {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--secondary-color);
    border-radius: 50px;
    font-weight: 600;
    margin-bottom: 2rem;
}

.hero-image {
    position: relative;
    perspective: 1000px;
}

.hero-image img {
    border-radius: 20px;
    box-shadow: var(--box-shadow);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: var(--transition);
}

.hero-image:hover img {
    transform: rotateY(0) rotateX(0);
}

.hero-image::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-color) 100%);
    z-index: -1;
    transform: rotate(-3deg) scale(0.95);
    opacity: 0.7;
    filter: blur(20px);
}

/* ============ Intro Section ============ */
.intro-section {
    background-color: var(--background-color);
}

.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
}

.card-inner {
    height: 100%;
    padding: 2rem;
    border-radius: var(--border-radius);
    background-color: var(--background-alt);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.card:hover .card-inner {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

/* ============ Content With Image ============ */
.content-with-image {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.content-with-image.reverse {
    grid-template-columns: 1fr 1fr;
}

.content-with-image.reverse .content-text {
    order: 2;
}

.content-with-image.reverse .content-image {
    order: 1;
}

.content-text h3 {
    margin-top: 2rem;
}

.content-text h3:first-child {
    margin-top: 0;
}

.content-image {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.content-image img {
    transition: var(--transition);
    width: 100%;
    height: auto;
}

.content-image:hover img {
    transform: scale(1.05);
}

.feature-list {
    margin-top: 1.5rem;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.feature:last-child {
    margin-bottom: 0;
}

.feature svg {
    flex-shrink: 0;
}

/* ============ Steps Container ============ */
.steps-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.step-number {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    font-weight: 700;
    font-size: 1.5rem;
    border-radius: 50%;
    flex-shrink: 0;
}

.step-content {
    flex-grow: 1;
}

.step-content h3 {
    margin-top: 0;
}

/* ============ Science Section ============ */
.science-section {
    background-color: var(--background-alt);
    position: relative;
    overflow: hidden;
}

.science-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, rgba(99, 102, 241, 0) 70%);
    z-index: 0;
}

.science-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.science-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.science-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.icon-container {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(99, 102, 241, 0.1);
    border-radius: 50%;
}

/* ============ Testimonials Section ============ */
.testimonials-section {
    background-color: var(--background-color);
}

.testimonials-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial {
    height: 100%;
}

.testimonial-content {
    height: 100%;
    background-color: var(--background-alt);
    border-radius: var(--border-radius);
    padding: 2rem;
    position: relative;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.testimonial-content:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.quote-icon {
    width: 36px;
    height: 36px;
    margin-bottom: 1rem;
    opacity: 0.6;
}

.testimonial-content h3 {
    margin-bottom: 0.25rem;
    color: var(--primary-color);
}

.testimonial-info {
    color: var(--text-lighter);
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ============ FAQ Section ============ */
.faq-section {
    background-color: var(--background-alt);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

details {
    background-color: white;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

details:last-child {
    margin-bottom: 0;
}

summary {
    padding: 1.5rem;
    cursor: pointer;
    position: relative;
    font-weight: 600;
    list-style: none;
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    position: absolute;
    right: 1.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

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

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

details[open] {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* ============ CTA Section ============ */
.cta-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    top: -100px;
    right: -100px;
}

.cta-section::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    bottom: -150px;
    left: -150px;
}

.cta-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
}

.cta-section h2 {
    color: white;
    margin-bottom: 1rem;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.cta-section .cta-button {
    background: white;
    color: var(--primary-color);
    font-size: 1.1rem;
    padding: 1rem 2.5rem;
}

.cta-section .cta-button:hover {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

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

.footer-top {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-column h3 {
    color: white;
    position: relative;
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-column p {
    color: #D1D5DB;
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-column a {
    color: #D1D5DB;
    transition: var(--transition);
}

.footer-column a:hover {
    color: white;
}

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

.disclaimer {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

.disclaimer p {
    color: #D1D5DB;
    font-size: 0.9rem;
    margin-bottom: 0;
}

.copyright {
    text-align: center;
}

.copyright p {
    color: #9CA3AF;
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ============ Animations ============ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-aos="fade-up"],
[data-aos="fade-right"],
[data-aos="zoom-in"] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos="fade-right"] {
    transform: translateX(-20px);
}

[data-aos="zoom-in"] {
    transform: scale(0.95);
}

/* Elements in view get these classes applied */
.aos-animate[data-aos="fade-up"],
.aos-animate[data-aos="fade-right"],
.aos-animate[data-aos="zoom-in"] {
    opacity: 1;
    transform: translateY(0);
}

.aos-animate[data-aos="fade-right"] {
    transform: translateX(0);
}

.aos-animate[data-aos="zoom-in"] {
    transform: scale(1);
}

/* Shimmer loading effect */
.shimmer {
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0) 0%, 
        rgba(255, 255, 255, 0.6) 50%, 
        rgba(255, 255, 255, 0) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* ============ Media Queries ============ */
@media (max-width: 1200px) {
    .hero-content {
        gap: 2rem;
    }
    
    .content-with-image {
        gap: 3rem;
    }
}

@media (max-width: 992px) {
    section {
        padding: 4rem 0;
    }
    
    .hero-section {
        padding-top: calc(var(--header-height) + 2rem);
    }
    
    .desktop-nav {
        display: none;
    }
    
    .hamburger-menu {
        display: flex;
        margin-left: 1.5rem;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero-content,
    .content-with-image,
    .content-with-image.reverse {
        grid-template-columns: 1fr;
    }
    
    .content-with-image.reverse .content-text,
    .content-with-image.reverse .content-image {
        order: unset;
    }
    
    .hero-text {
        text-align: center;
        margin: 0 auto;
    }
    
    .testimonials-container {
        grid-template-columns: 1fr;
    }
    
    .desktop-only {
        display: none;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .section-header {
        margin-bottom: 2rem;
    }
    
    .hero-section {
        border-radius: 0;
    }
    
    .step {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .science-card {
        padding: 1.5rem;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    .language-button span {
        display: none;
    }
    
    .language-button {
        padding: 0.5rem;
    }
    
    .language-selector {
        margin: 0 1rem;
    }
    
    .footer-column h3::after {
        width: 30px;
    }
}

/* For screen readers */
.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;
}

/* Utility classes */
.desktop-only {
    display: inline-block;
}

@media (max-width: 992px) {
    .desktop-only {
        display: none;
    }
}

/* Initialize AOS on page load */
document.addEventListener('DOMContentLoaded', function() {
    const animatedElements = document.querySelectorAll('[data-aos]');
    
    function checkIfInView() {
        animatedElements.forEach(element => {
            const rect = element.getBoundingClientRect();
            const windowHeight = window.innerHeight || document.documentElement.clientHeight;
            const isInView = (
                rect.top <= windowHeight * 0.75 &&
                rect.bottom >= 0
            );
            
            if (isInView) {
                element.classList.add('aos-animate');
            }
        });
    }
    
    // Initial check
    checkIfInView();
    
    // Check on scroll
    window.addEventListener('scroll', checkIfInView);
});