:root {
    --bg-dark: #050505;
    --bg-card: #111111;
    --bg-card-hover: #151515;
    --text-primary: #ededed;
    --text-secondary: #a0a0a0;
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    --accent: #ffffff;
    --grad-start: #7000FF;
    --grad-end: #00C2FF;
    --brand-gradient: linear-gradient(135deg, var(--grad-start), var(--grad-end));
}

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

html {
    scroll-behavior: smooth;
    font-family: 'Inter', -apple-system, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

::selection {
    background: rgba(112, 0, 255, 0.3);
    color: #fff;
}

/* Background Glow */
.glow-point {
    position: fixed;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: var(--grad-start);
    filter: blur(150px);
    opacity: 0.15;
    z-index: -1;
    border-radius: 50%;
    pointer-events: none;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography elements */
.text-gradient {
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    z-index: 100;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
    background: rgba(5, 5, 5, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.header.scrolled {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    background: rgba(5, 5, 5, 0.9);
}

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

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 38px;
    width: auto;
    display: block;
    object-fit: contain;
    transition: transform 0.2s ease;
    mix-blend-mode: screen;
}

.logo:hover .logo-img {
    transform: scale(1.02);
}

.nav {
    display: flex;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--text-primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.lang-switcher {
    display: flex;
    gap: 4px;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.lang-btn {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    padding: 6px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

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

.lang-btn.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-dark);
}

.btn-primary:hover {
    background: #ffffff;
    box-shadow: 0 0 20px rgba(255,255,255,0.3);
    transform: translateY(-1px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
}

.btn-text {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: color 0.2s;
    margin-top: 16px;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    position: relative;
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 28px;
    animation: fadeUp 0.8s ease backwards;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    line-height: 1.1;
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    animation: fadeUp 0.8s ease 0.1s backwards;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 40px;
    animation: fadeUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    animation: fadeUp 0.8s ease 0.3s backwards;
}

.hero-buttons .btn {
    padding: 12px 28px;
    font-size: 1rem;
}

/* Products Section */
.products {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 36px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.product-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px -10px rgba(0,0,0,0.5);
}

.card-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: rgba(255,255,255,0.03);
    margin-bottom: 28px;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.card-icon svg {
    position: relative;
    z-index: 2;
    color: var(--text-primary);
}

.card-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--brand-gradient);
    opacity: 0.15;
}

.product-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.product-card p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: auto;
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 120px 0;
    border-top: 1px solid var(--border-color);
}

.about-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-content {
    max-width: 800px;
    text-align: center;
}

.about-content h2 {
    font-size: 2rem;
    margin-bottom: 24px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.about-content p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    background: #000;
}

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

.footer-brand .copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

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

/* Responsive */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    .header .btn-secondary {
        display: none;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-buttons {
        flex-direction: column;
    }
    .footer-container {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    .product-grid {
        grid-template-columns: 1fr;
    }
}