/* Design System: Tech-Future */
:root {
    --bg-dark: #0a0b10;
    --bg-card: #151921;
    --primary: #00f2ff; /* Neon Blue */
    --secondary: #7000ff; /* Purple */
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
    --white: #ffffff;
    --glass: rgba(255, 255, 255, 0.05);
    --border: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Orbitron:wght@400;700&display=swap');

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, .tech-font {
    font-family: 'Orbitron', sans-serif;
    letter-spacing: 2px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    background: rgba(10, 11, 16, 0.8);
    backdrop-filter: blur(20px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-shadow: 0 0 10px rgba(0, 242, 255, 0.5);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
}

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

.nav-icons {
    display: flex;
    gap: 1.5rem;
    font-size: 1.2rem;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 0 10%;
    background: linear-gradient(to right, rgba(10, 11, 16, 0.9), rgba(10, 11, 16, 0.2)), url('images/hero.png');
    background-size: cover;
    background-position: center;
}

.hero-content {
    max-width: 600px;
}

.hero-content h1 {
    font-size: 4.5rem;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.hero-content span {
    color: var(--primary);
    display: block;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.btn-tech {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--primary);
    color: var(--bg-dark);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 4px;
    box-shadow: 0 0 20px rgba(0, 242, 255, 0.4);
    transition: var(--transition);
}

.btn-tech:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(0, 242, 255, 0.6);
}

/* Product Grid */
.products {
    padding: 8rem 5%;
}

.section-title {
    margin-bottom: 4rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.section-title h2 {
    font-size: 2.5rem;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.product-img {
    width: 100%;
    aspect-ratio: 1;
    background: #1e2530;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.product-img i {
    font-size: 5rem;
    color: var(--border);
}

.product-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--secondary);
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 4px;
    text-transform: uppercase;
}

.product-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.product-price {
    color: var(--primary);
    font-weight: 700;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

/* Category Section */
.categories {
    padding: 5rem 5%;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.category-item {
    background: var(--glass);
    padding: 2rem;
    text-align: center;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.category-item:hover {
    background: rgba(0, 242, 255, 0.05);
    border-color: var(--primary);
}

.category-item i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

/* Footer */
footer {
    padding: 8rem 5% 4rem;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 4rem;
}

@media (max-width: 992px) {
    .nav-links { display: none; }
    .hero-content h1 { font-size: 3rem; }
    .categories { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}