/* ========================================
   Modern Tech Theme - Futuristic Design
   ======================================== */

:root {
    --primary: #00d4ff;
    --secondary: #7b2cbf;
    --accent: #00ff88;
    --dark: #0a0a1a;
    --darker: #050510;
    --light: #ffffff;
    --gray: #888888;
    --gradient: linear-gradient(135deg, #00d4ff 0%, #7b2cbf 100%);
    --glow: 0 0 20px rgba(0, 212, 255, 0.5);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--darker);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Background Effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(123, 44, 191, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Header */
.header {
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 10px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.logo-text {
    font-size: 24px;
    font-weight: bold;
    color: var(--light);
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    color: var(--light);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: width 0.3s;
}

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

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

.nav-icons {
    display: flex;
    gap: 20px;
}

.nav-icons a {
    color: var(--light);
    font-size: 20px;
    transition: color 0.3s;
}

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

.cart-count {
    background: var(--primary);
    color: var(--darker);
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: -5px;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--light);
    transition: all 0.3s;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 20px 80px;
    background: 
        linear-gradient(180deg, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(0,212,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, transparent 70%);
    animation: pulse 4s infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.8; }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 64px;
    font-weight: bold;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.hero h2 {
    font-size: 28px;
    color: var(--gray);
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s both;
}

.quality-badge {
    display: inline-block;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--primary);
    padding: 10px 30px;
    border-radius: 30px;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.4s both;
}

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

.btn-primary {
    display: inline-block;
    background: var(--gradient);
    color: var(--light);
    padding: 15px 50px;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    animation: fadeInUp 1s ease 0.6s both;
}

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

/* Sections */
.section {
    padding: 80px 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 50px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.category-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px 20px;
    text-align: center;
    text-decoration: none;
    color: var(--light);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s;
}

.category-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.category-card:hover::before {
    opacity: 0.1;
}

.category-icon {
    font-size: 48px;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.category-card h3 {
    font-size: 16px;
    font-weight: 600;
    position: relative;
    z-index: 1;
    letter-spacing: 2px;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: var(--glow);
}

.product-image-placeholder {
    width: 100%;
    height: 180px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 64px;
    margin-bottom: 20px;
}

.rating {
    color: var(--primary);
    margin-bottom: 15px;
}

.product-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.price {
    font-size: 28px;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 15px;
}

.discount-info {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid var(--accent);
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 20px;
}

.discount-info p {
    color: var(--accent);
    font-size: 12px;
    margin: 2px 0;
}

/* Features */
.features {
    background: rgba(0, 0, 0, 0.3);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 48px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--gray);
}

/* Newsletter */
.newsletter {
    background: var(--gradient);
    padding: 80px 30px;
    text-align: center;
}

.newsletter h2 {
    font-size: 36px;
    margin-bottom: 15px;
}

.newsletter p {
    margin-bottom: 30px;
    opacity: 0.9;
}

.newsletter-form {
    display: flex;
    justify-content: center;
    gap: 15px;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 15px 25px;
    border: none;
    border-radius: 30px;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.2);
    color: var(--light);
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.newsletter-form .btn-primary {
    background: var(--darker);
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.5);
    padding: 60px 30px 20px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--primary);
}

.footer-section p, .footer-section a {
    color: var(--gray);
    text-decoration: none;
    display: block;
    margin-bottom: 10px;
    transition: color 0.3s;
}

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

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--primary);
    color: var(--darker);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .header-container {
        padding: 15px 20px;
    }
    
    .hero h1 {
        font-size: 48px;
    }
    
    .hero h2 {
        font-size: 22px;
    }
    
    .section {
        padding: 60px 20px;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .category-grid,
    .product-grid,
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    /* Header */
    .header-container {
        padding: 12px 15px;
    }
    
    .nav {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 26, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    }
    
    .nav.active {
        display: flex;
    }
    
    .nav a {
        padding: 15px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    /* Mobile Menu Button */
    .menu-toggle {
        display: flex;
        flex-direction: column;
        gap: 5px;
        cursor: pointer;
        padding: 10px;
    }
    
    .menu-toggle span {
        width: 25px;
        height: 2px;
        background: var(--light);
        transition: all 0.3s;
    }
    
    .logo-text {
        font-size: 20px;
    }
    
    .logo-icon {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }
    
    /* Hero */
    .hero {
        padding: 100px 15px 60px;
        min-height: auto;
    }
    
    .hero h1 {
        font-size: 32px;
    }
    
    .hero h2 {
        font-size: 16px;
    }
    
    .quality-badge {
        padding: 8px 20px;
        font-size: 14px;
    }
    
    .btn-primary {
        padding: 12px 35px;
        font-size: 14px;
    }
    
    /* Sections */
    .section {
        padding: 50px 15px;
    }
    
    .section-title {
        font-size: 26px;
        margin-bottom: 30px;
    }
    
    /* Categories */
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .category-card {
        padding: 25px 15px;
    }
    
    .category-icon {
        font-size: 32px;
        margin-bottom: 10px;
    }
    
    .category-card h3 {
        font-size: 12px;
    }
    
    /* Products */
    .product-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .product-card {
        padding: 20px;
    }
    
    .product-image-placeholder {
        height: 150px;
        font-size: 48px;
    }
    
    .product-card h3 {
        font-size: 16px;
    }
    
    .price {
        font-size: 24px;
    }
    
    /* Features */
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    /* Newsletter */
    .newsletter {
        padding: 50px 20px;
    }
    
    .newsletter h2 {
        font-size: 24px;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-form input,
    .newsletter-form button {
        width: 100%;
    }
    
    /* Footer */
    .footer-container {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    /* Product Detail */
    .product-detail-grid {
        grid-template-columns: 1fr !important;
    }
    
    /* About */
    .stats-grid {
        flex-direction: column;
        gap: 30px !important;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 26px;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    .category-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    
    .category-card h3 {
        font-size: 10px;
    }
    
    .feature-card h3 {
        font-size: 18px;
    }
    
    .price {
        font-size: 20px;
    }
}

/* Touch-friendly improvements */
@media (hover: none) {
    .btn-primary:hover {
        transform: none;
    }
    
    .category-card:hover,
    .product-card:hover,
    .feature-card:hover {
        transform: none;
    }
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.float-animation {
    animation: float 3s ease-in-out infinite;
}