:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #06b6d4;
    --accent: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --text: #0f172a;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --bg: #ffffff;
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --surface: #ffffff;
    --border: #e2e8f0;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius: 0.75rem;
    --radius-lg: 1rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-bg: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

/* Three.js Background */
#three-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.1;
}

/* Header */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

header nav {
    display: flex;
    gap: 2rem;
}

header nav a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    position: relative;
}

header nav a:hover,
header nav a:focus {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.cta-button {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Hero Section */
.hero {
    background: var(--gradient-bg);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-text p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.hero-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--bg);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    color: var(--text);
}

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

.feature-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text);
}

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

/* Stats Section */
.stats {
    padding: 4rem 0;
    background: var(--gradient-primary);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
    box-sizing: border-box;
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    display: block;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Compatibility Section */
.compatibility {
    padding: 6rem 0;
    background: var(--bg-light);
}

.compatibility h2 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text);
}

.compatibility-text {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-style: italic;
    font-weight: 500;
}

.devices-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

.device {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.device::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    opacity: 0;
    transition: var(--transition);
}

.device:hover::before {
    opacity: 0.05;
}

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

.device-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    box-shadow: var(--shadow);
}

.device-icon::before {
    content: '';
    width: 30px;
    height: 30px;
    background: white;
    border-radius: 4px;
}

.device h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text);
    position: relative;
    z-index: 1;
}

.device p {
    color: var(--text-light);
    line-height: 1.5;
    position: relative;
    z-index: 1;
}

/* CTA Section */
.cta-section {
    padding: 6rem 0;
    background: var(--gradient-primary);
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
    background-size: 50px 50px;
    animation: float 20s infinite linear;
}

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

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.cta-section p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.cta-section .cta-primary {
    background: white;
    color: var(--primary);
    position: relative;
    z-index: 1;
}

.cta-section .cta-primary:hover {
    background: var(--bg-light);
    color: var(--primary-dark);
}

/* Footer */
footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: white;
    padding: 4rem 0 2rem;
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
}

footer::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="0.5" fill="white" opacity="0.05"/></svg>');
    background-size: 40px 40px;
    pointer-events: none;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 3rem;
    position: relative;
    z-index: 1;
}

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

.footer-section h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-size: 0.9rem;
}

.footer-section .role {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8rem;
    font-style: italic;
}

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

.footer-logo h3 {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.footer-logo p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1.5rem;
}

.footer-right {
    text-align: right;
    align-items: flex-end;
}

.contact-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.contact-info p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius);
    text-decoration: none;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.social-link:hover {
    transform: translateY(-2px);
    background: var(--primary);
    border-color: var(--primary);
}

.social-link:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.accessibility-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius);
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    font-weight: 500;
}

.footer-right {
    text-align: right;
}

.footer-copyright {
    opacity: 0.6;
    font-size: 0.8rem;
    margin-top: 1rem;
}

.footer-links {
    display: flex;
    justify-content: flex-end;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer-links a:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    color: white;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    header nav {
        gap: 1.5rem;
    }
    
    .hero {
        padding: 4rem 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
        padding: 0 1rem;
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr !important;
        padding: 0 2rem;
        gap: 1rem;
        max-width: 400px;
    }
    
    .stat-card {
        padding: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .stat-label {
        font-size: 0.9rem;
    }
    
    .devices-grid {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
        padding: 0 1rem;
    }
    
    .footer-section {
        text-align: center;
        align-items: center;
    }
    
    .footer-right {
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

/* Focus styles */
*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 4px;
}

/* Skip link for screen readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    font-weight: 600;
}

.skip-link:focus {
    top: 6px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}
.lsf-info {
    padding: 4rem 4rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.lsf-info h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #1e293b;
    font-size: 2.2rem;
    font-weight: 700;
}

.lsf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 400px));
    gap: 2rem;
    margin: 2rem 0;
    justify-content: center;
}

.lsf-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #4F46E5;
}

.lsf-card h3 {
    color: #1e293b;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.lsf-card p {
    color: #64748b;
    line-height: 1.6;
}

.lsf-note {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: 0.5rem;
    padding: 1rem;
    margin: 2rem auto 0;
    color: #92400e;
    font-size: 0.95rem;
    max-width: 832px;
}

@media (max-width: 768px) {
    .lsf-info {
        padding: 3rem 2rem;
    }
    
    .lsf-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .lsf-card {
        padding: 1.5rem;
    }
}