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

:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --secondary: #10B981;
    --dark: #1F2937;
    --gray: #6B7280;
    --light-gray: #F3F4F6;
    --white: #FFFFFF;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    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(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--primary);
}

/* Language Switcher */
.language-switcher {
    margin-left: 20px;
}

.language-switcher select {
    padding: 8px 16px;
    border: 2px solid var(--primary);
    border-radius: 8px;
    background: var(--white);
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.language-switcher select:hover {
    background: var(--primary);
    color: var(--white);
}

.language-switcher select:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: var(--light-gray);
    color: var(--dark);
}

.btn-secondary:hover {
    background: #E5E7EB;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-large {
    padding: 16px 36px;
    font-size: 18px;
}

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    top: -200px;
    right: -150px;
    animation: float 6s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    bottom: -100px;
    left: -100px;
    animation: float 8s ease-in-out infinite;
}

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

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.highlight {
    background: linear-gradient(120deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 32px;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 32px;
}

.hero-badges {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.badge {
    font-size: 14px;
    opacity: 0.9;
}

/* Taskbar Mockup */
.hero-image {
    position: relative;
}

.mockup-taskbar {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    gap: 12px;
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.8s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.taskbar-item {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    padding: 16px;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s;
    min-width: 80px;
}

.taskbar-item:hover {
    background: rgba(255, 255, 255, 0.35);
    transform: translateY(-4px);
}

.folder-icon {
    font-size: 32px;
}

.taskbar-item span {
    font-size: 12px;
    font-weight: 600;
}

/* Stats Section */
.stats {
    padding: 60px 0;
    background: var(--white);
}

.stats .container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 56px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 16px;
    color: var(--gray);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--light-gray);
}

.features h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    font-size: 20px;
    color: var(--gray);
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px 32px;
    border-radius: 16px;
    transition: all 0.3s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow);
}

.feature-card.featured {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 16px;
    line-height: 1.6;
    opacity: 0.9;
}

/* How It Works Section */
.how-it-works {
    padding: 100px 0;
    background: var(--white);
}

.how-it-works h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 80px;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.step {
    display: grid;
    grid-template-columns: 80px 1fr 200px;
    gap: 40px;
    align-items: center;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 800;
    box-shadow: var(--shadow);
}

.step-content h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
}

.step-content p {
    font-size: 18px;
    color: var(--gray);
    line-height: 1.6;
}

.step-visual {
    background: var(--light-gray);
    padding: 40px;
    border-radius: 16px;
    text-align: center;
}

.visual-box {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

.demo-video {
    margin-top: 80px;
    text-align: center;
}

.video-placeholder {
    background: var(--light-gray);
    border-radius: 16px;
    padding: 80px;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    cursor: pointer;
    transition: all 0.3s;
}

.video-placeholder:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow);
}

.video-placeholder p {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
}

/* Pricing Section */
.pricing {
    padding: 100px 0;
    background: var(--light-gray);
}

.pricing h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.pricing-card {
    background: var(--white);
    border-radius: 16px;
    padding: 40px 32px;
    position: relative;
    transition: all 0.3s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
    border: 3px solid var(--primary);
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
}

.price {
    text-align: center;
    margin-bottom: 8px;
}

.price .amount {
    font-size: 56px;
    font-weight: 800;
    color: var(--primary);
}

.price .currency {
    font-size: 24px;
    color: var(--gray);
}

.price-period {
    text-align: center;
    color: var(--gray);
    font-size: 16px;
    margin-bottom: 32px;
}

.features-list {
    list-style: none;
    margin-bottom: 32px;
}

.features-list li {
    padding: 12px 0;
    border-bottom: 1px solid var(--light-gray);
    font-size: 16px;
}

.pricing-card .btn {
    width: 100%;
    justify-content: center;
}

/* Testimonials Section */
.testimonials {
    padding: 100px 0;
    background: var(--white);
}

.testimonials h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 60px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--light-gray);
    padding: 32px;
    border-radius: 16px;
    transition: all 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.stars {
    font-size: 20px;
    margin-bottom: 16px;
}

.testimonial-card p {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--dark);
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.testimonial-author strong {
    font-size: 16px;
    color: var(--dark);
}

.testimonial-author span {
    font-size: 14px;
    color: var(--gray);
}

/* Download Section */
.download {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
}

.download h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 16px;
}

.download .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.download-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin: 60px 0;
}

.download-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    padding: 40px;
    border-radius: 16px;
    text-align: center;
}

.download-card h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
}

.version {
    font-size: 14px;
    opacity: 0.8;
    margin-bottom: 24px;
}

.download-card .btn {
    margin-bottom: 16px;
    width: 100%;
    justify-content: center;
}

.download-info {
    font-size: 14px;
    opacity: 0.8;
}

.system-requirements {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 32px;
    border-radius: 16px;
    max-width: 800px;
    margin: 0 auto;
}

.system-requirements h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    text-align: center;
}

.system-requirements ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.system-requirements li {
    padding: 8px 0;
    font-size: 15px;
}

.system-requirements li::before {
    content: '✓ ';
    font-weight: bold;
}

/* FAQ Section */
.faq {
    padding: 100px 0;
    background: var(--white);
}

.faq h2 {
    text-align: center;
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 60px;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.faq-item h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--primary);
}

.faq-item p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--gray);
}

/* Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-section p {
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.8;
    margin-bottom: 20px;
}

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

.footer-section li {
    margin-bottom: 12px;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-section a:hover {
    opacity: 1;
}

.social-links {
    display: flex;
    gap: 16px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    opacity: 0.6;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 42px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .pricing-card.popular {
        transform: scale(1);
    }
}

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

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero h1 {
        font-size: 36px;
    }

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

    .mockup-taskbar {
        justify-content: center;
    }

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

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

    .step {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .download-options {
        grid-template-columns: 1fr;
    }

    .system-requirements ul {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
    }
}