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

:root {
    --color-primary: #ff6b35;
    --color-primary-dark: #e55a2b;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-text: #2c3e50;
    --color-text-light: #666;
    --color-border: #e0e0e0;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary);
}

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

.lang-switcher {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    background: none;
    border: 2px solid var(--color-border);
    color: var(--color-text-light);
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
}

.lang-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    text-align: center;
    padding: 6rem 2rem 4rem;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    color: var(--color-text);
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.5rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
}

.cta-button:hover {
    background: var(--color-primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

/* Product Section */
.product-section {
    padding: 6rem 0;
    background: var(--color-bg);
}

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

.product-images {
    position: sticky;
    top: 100px;
}

.main-img {
    width: 100%;
    border-radius: 16px;
    margin-bottom: 1rem;
    background: var(--color-bg-alt);
    padding: 2rem;
}

.product-gallery {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.product-gallery img {
    width: 100%;
    border-radius: 12px;
    background: var(--color-bg-alt);
    padding: 1rem;
}

.product-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--color-text);
}

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

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

.price-note {
    display: block;
    font-size: 1rem;
    color: var(--color-text-light);
    margin-top: 0.5rem;
}

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

.product-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
    padding-left: 2rem;
    position: relative;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.buy-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #ffe600;
    color: #333;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition);
}

.buy-button:hover {
    background: #ffd000;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 230, 0, 0.4);
}

.buy-button svg {
    width: 20px;
    height: 20px;
}

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

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--color-text);
}

.section-title.light {
    color: white;
}

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

.feature {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

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

.feature h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

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

/* Footer */
footer {
    background: var(--color-text);
    color: white;
    padding: 4rem 0 2rem;
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 2rem;
    background: rgba(255,255,255,0.1);
    border-radius: 12px;
    color: white;
    text-decoration: none;
    transition: var(--transition);
    min-width: 120px;
}

.social-link:hover {
    background: var(--color-primary);
    transform: translateY(-3px);
}

.social-link svg {
    width: 32px;
    height: 32px;
}

.social-link span {
    font-size: 0.9rem;
    font-weight: 500;
}

.copyright {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Responsive */
@media (max-width: 968px) {
    .product-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .product-images {
        position: static;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 600px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .product-info h2 {
        font-size: 1.8rem;
    }

    .price {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .social-links {
        flex-direction: column;
        align-items: center;
    }

    .social-link {
        width: 100%;
        max-width: 200px;
    }
}