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

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #8b5cf6;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --bg-primary: #0a0a0a;
    --bg-secondary: #121212;
    --bg-card: #1a1a1a;
    --border-color: #2a2a2a;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    font-size: 1.5rem;
    font-weight: bold;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo {
    text-decoration: none;
    color: var(--primary-color);
}

.nav-center, .nav-right {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.navbar a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.navbar a:hover {
    color: var(--text-primary);
}

.login-btn {
    background: var(--primary-color);
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
    color: white !important;
    font-weight: 500;
}

.login-btn:hover {
    background: var(--primary-hover);
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: 0.5rem;
    margin-left: 1rem;
    background: var(--bg-card);
    padding: 0.25rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.4rem 1rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.lang-btn.active {
    background: var(--primary-color);
    color: white;
}

.lang-btn:hover:not(.active) {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.1);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 120px 80px 80px;
    max-width: 1600px;
    margin: 0 auto;
    position: relative;
}

.hero-content {
    flex: 1;
    max-width: 650px;
    z-index: 10;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 2rem;
    color: white;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: gradient-shift 3s ease infinite;
}

.hero-subtitle {
    font-size: 1.8rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 300;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.btn-primary.large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Download Section */
.download-section {
    margin-top: 3rem;
}

.download-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s;
    flex: 1;
    min-width: 200px;
}

.download-btn:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.2);
}

.download-icon {
    font-size: 2rem;
}

.download-text {
    display: flex;
    flex-direction: column;
}

.download-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.download-os {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Hero Visual */
.hero-visual {
    flex: 1;
    position: relative;
    height: 500px;
}

.blur-background {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(80px);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.floating-card {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.card-content {
    font-size: 1.2rem;
    font-weight: 600;
}

.card-1 {
    top: 10%;
    right: 10%;
    animation: float 3s ease-in-out infinite;
}

.card-2 {
    top: 50%;
    right: 30%;
    animation: float 4s ease-in-out infinite;
    animation-delay: 1s;
}

.card-3 {
    bottom: 15%;
    right: 5%;
    animation: float 3.5s ease-in-out infinite;
    animation-delay: 0.5s;
}

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

/* Stats Section */
.stats {
    padding: 80px 40px;
    background: var(--bg-primary);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.2), transparent);
    transition: left 0.6s;
}

.stat-card:hover::before {
    left: 100%;
}

.stat-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.3);
}

.stat-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: inline-block;
    animation: bounceIn 0.8s ease-out;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

/* Particle Canvas */
#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* Gradient text animation */
@keyframes gradient-shift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* Bounce in animation */
@keyframes bounceIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Pulse animation for stats */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* How It Works Section */
.how-it-works {
    padding: 100px 80px;
    background: var(--bg-primary);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.step-item {
    position: relative;
    z-index: 1;
    text-align: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem 2rem;
    transition: all 0.4s;
}

.step-item:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.3);
}

.step-number {
    font-size: 1rem;
    color: var(--primary-color);
    font-weight: 800;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.step-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: block;
    animation: bounceIn 0.8s ease-out backwards;
}

.step-item:nth-child(1) .step-icon { animation-delay: 0.1s; }
.step-item:nth-child(2) .step-icon { animation-delay: 0.2s; }
.step-item:nth-child(3) .step-icon { animation-delay: 0.3s; }
.step-item:nth-child(4) .step-icon { animation-delay: 0.4s; }

.step-item h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.step-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Arrow connector lines between steps */
.step-item:not(:last-child) {
    position: relative;
}

.step-item:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    left: calc(100% + 0.75rem);
    transform: translateY(-50%);
    width: 2.25rem;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    z-index: 2;
}

.step-item:not(:last-child)::before {
    content: '';
    position: absolute;
    top: 50%;
    left: calc(100% + 3rem);
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 5px solid transparent;
    border-bottom: 5px solid transparent;
    border-left: 8px solid var(--secondary-color);
    z-index: 2;
}

/* Hide arrows on mobile */
@media (max-width: 1023px) {
    .step-item::before,
    .step-item::after {
        display: none;
    }
}

/* Testimonials Section */
.testimonials {
    padding: 100px 80px;
    background: var(--bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    transition: all 0.4s;
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 20px;
    font-size: 6rem;
    color: var(--primary-color);
    opacity: 0.1;
    line-height: 1;
}

.testimonial-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.2);
}

.testimonial-content {
    margin-bottom: 2rem;
}

.testimonial-content p {
    color: var(--text-primary);
    line-height: 1.8;
    font-size: 1.05rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    font-size: 3rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    border-radius: 50%;
}

.author-info {
    flex: 1;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.author-role {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Partners Section */
.partners {
    padding: 100px 80px;
    background: var(--bg-primary);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.partner-category {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.4s;
}

.partner-category:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.2);
}

.partner-category h4 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.partner-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.partner-tag {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(99, 102, 241, 0.3);
    transition: all 0.3s;
}

.partner-tag:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

/* Features Section */
.features {
    padding: 100px 80px;
    background: var(--bg-secondary);
}

.section-title {
    font-size: 1rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.section-subtitle {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 4rem;
    font-weight: 700;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.2);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h4 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: 100px 80px;
    text-align: center;
}

.cta h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 60px 80px 30px;
    background: var(--bg-primary);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 120px 40px 60px;
    }

    .hero-visual {
        margin-top: 4rem;
        width: 100%;
    }

    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-center {
        display: none;
    }

    .nav-right {
        gap: 0.5rem;
    }

    .lang-switcher {
        margin-left: 0.5rem;
        padding: 0.2rem;
        gap: 0.3rem;
    }

    .lang-btn {
        padding: 0.3rem 0.7rem;
        font-size: 0.85rem;
    }

    .login-btn {
        padding: 0.4rem 1rem;
        font-size: 0.85rem;
    }

    .stats {
        padding: 60px 20px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .stat-icon {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.4rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .download-buttons {
        flex-direction: column;
    }

    .download-btn {
        width: 100%;
    }

    .section-subtitle {
        font-size: 2rem;
    }

    .features, .how-it-works, .testimonials, .partners, .cta, .footer {
        padding: 60px 40px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .steps-container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .partners-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 20px;
    }

    .hero {
        padding: 100px 20px 40px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        text-align: center;
    }

    .stats {
        padding: 40px 15px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-card {
        padding: 2rem 1.5rem;
    }

    .how-it-works, .testimonials, .partners {
        padding: 40px 20px;
    }

    .step-item {
        padding: 2rem 1.5rem;
    }

    .step-icon {
        font-size: 3rem;
    }

    .testimonial-card {
        padding: 2rem 1.5rem;
    }

    .partner-category {
        padding: 1.5rem;
    }

    .features, .cta, .footer {
        padding: 40px 20px;
    }
}