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

:root {
    --primary: #000000;
    --secondary: #1a1a1a;
    --accent: #ff4444;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-dark: #000000;
    --border: #e0e0e0;
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.nav {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-text {
    color: var(--primary);
}

.logo-accent {
    color: var(--accent);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    margin: 0 auto;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--accent);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

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

.nav-cta {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
}

.nav-cta:hover {
    background: var(--accent);
    transform: translateY(-2px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 120px 0 60px;
    background: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.slide {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
    color: var(--primary);
}

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

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

.btn-primary, .btn-secondary {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.05rem;
}

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

.btn-primary:hover {
    background: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 68, 68, 0.3);
}

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

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

.slide-image {
    position: relative;
    height: 500px;
}

.device-mockup {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
    border-radius: 30px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.device-mockup::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 5px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 4rem;
    padding-top: 4rem;
    border-top: 1px solid var(--border);
}

.hero-feature {
    text-align: center;
}

.feature-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.feature-text {
    display: block;
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Products Section */
.products {
    padding: 80px 0;
    background: var(--bg-primary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.product-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    position: relative;
    transition: var(--transition);
}

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

.product-card.featured {
    border-color: var(--accent);
}

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

.product-badge.premium {
    background: var(--accent);
    color: white;
}

.product-image {
    width: 100%;
    height: 200px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.product-model {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.product-features {
    margin-bottom: 2rem;
}

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

.check {
    color: #4caf50;
    font-weight: 700;
}

.product-price {
    display: flex;
    align-items: baseline;
    margin-bottom: 1.5rem;
}

.price-currency {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.price-period {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.product-button {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--primary);
    background: transparent;
    color: var(--primary);
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.product-button:hover {
    background: var(--primary);
    color: white;
}

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

.product-button.primary:hover {
    background: var(--accent);
    border-color: var(--accent);
}

/* Features Section */
.features-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.features-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.showcase-image {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    height: 500px;
}

.showcase-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.feature-block {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.feature-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--accent);
}

.feature-block h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

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

/* Pricing Section */
.pricing {
    padding: 80px 0;
    background: var(--bg-primary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
    position: relative;
    transition: var(--transition);
}

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

.pricing-card.popular {
    border-color: var(--accent);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.plan-price {
    display: flex;
    justify-content: center;
    align-items: baseline;
    margin-bottom: 2rem;
}

.currency {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.amount {
    font-size: 3rem;
    font-weight: 700;
}

.period {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.plan-features {
    list-style: none;
    margin-bottom: 2rem;
}

.plan-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
}

.plan-features li:last-child {
    border-bottom: none;
}

.plan-features li.feature-disabled {
    color: var(--text-light);
    text-decoration: line-through;
    opacity: 0.6;
}

.plan-features li strong {
    font-weight: 600;
    color: var(--text-primary);
}

.pricing-note {
    margin-top: 40px;
    text-align: center;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
}

.pricing-note p {
    color: var(--text-secondary);
    font-size: 14px;
}

.plan-button {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--primary);
    background: transparent;
    color: var(--primary);
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.plan-button:hover {
    background: var(--primary);
    color: white;
}

.plan-button.primary {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.plan-button.primary:hover {
    background: var(--accent);
    border-color: var(--accent);
}

/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: var(--bg-dark);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    opacity: 0.8;
    margin-bottom: 2rem;
}

.cta-button {
    background: var(--accent);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
}

.cta-button:hover {
    background: #ff6666;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 68, 68, 0.3);
}

/* Footer */
.footer {
    background: var(--bg-primary);
    padding: 60px 0 20px;
    border-top: 1px solid var(--border);
}

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

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent);
    color: white;
}

.footer-column h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

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

.footer-column li {
    margin-bottom: 0.75rem;
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--accent);
}

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

.footer-bottom p {
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-cta {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .slide {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .slide-image {
        display: none;
    }
    
    .hero-features {
        gap: 2rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .features-showcase {
        grid-template-columns: 1fr;
    }
    
    .showcase-image {
        height: 300px;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

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

.hero-title,
.hero-subtitle,
.hero-buttons {
    animation: fadeIn 0.8s ease-out;
}

.hero-subtitle {
    animation-delay: 0.2s;
}

.hero-buttons {
    animation-delay: 0.4s;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection */
::selection {
    background: var(--accent);
    color: white;
}