:root {
    --bg-dark: #050505;
    --bg-card: #0a0a0a;
    --bg-card-hover: #111111;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent-green: #00ff88;
    --accent-blue: #00d4ff;
    --accent-red: #ff0055;
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    --nav-height: 80px;
    --container-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.text-gradient {
    background: linear-gradient(to right, var(--accent-green), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

/* Layout */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
    position: relative;
}

/* Header & Nav */
header {
    height: var(--nav-height);
    background: rgba(5, 5, 5, 0.9);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
}

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

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-green);
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
}

/* Cart Icon */
.cart-icon-container {
    position: relative;
    cursor: pointer;
}

.cart-count {
    position: absolute;
    top: -8px;
    right: -10px;
    background: var(--accent-red);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 50%;
    font-weight: bold;
}

/* User Profile */
.user-profile {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--bg-card-hover);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--accent-green);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--nav-height);
    background: radial-gradient(circle at center, #0f0f0f 0%, var(--bg-dark) 70%);
    overflow: hidden;
}

.hero-content {
    z-index: 2;
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.btn-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 12px 30px;
    border-radius: 4px;
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 0.9rem;
    border: 1px solid transparent;
    cursor: pointer;
    display: inline-block;
}

.btn-primary {
    background: var(--accent-green);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.4);
    background: #fff;
}

.btn-secondary {
    background: transparent;
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.2);
}

.btn-outline {
    border-color: var(--text-secondary);
    color: var(--text-secondary);
}

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

.btn-block {
    display: block;
    width: 100%;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-green);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.feature-icon {
    font-size: 2rem;
    color: var(--accent-green);
    margin-bottom: 20px;
}

/* Download Section */
.download-section {
    background: linear-gradient(45deg, #0a0a0a, #111);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.download-box {
    background: rgba(255, 255, 255, 0.03);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

/* Store Preview */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

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

.product-card {
    background: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
    transition: 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
}

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

.product-img {
    width: 100%;
    height: 250px;
    background: #151515;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    position: relative;
}

.product-img::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 80%, rgba(0,0,0,0.8));
}

.product-info {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.product-price {
    color: var(--accent-green);
    font-weight: 700;
    font-size: 1.2rem;
    margin: 10px 0;
}

/* Forms (Login/Signup) */
.auth-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 40px;
    background: var(--bg-card);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
}

.auth-form h2 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--accent-green);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input {
    width: 100%;
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    color: #fff;
    font-family: var(--font-body);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-green);
}

.auth-footer {
    margin-top: 20px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--accent-blue);
    text-decoration: none;
}

/* Cart Page */
.cart-container {
    max-width: 900px;
    margin: 120px auto 60px;
    padding: 0 20px;
}

.cart-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 30px;
    background: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
}

.cart-table th, .cart-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.cart-table th {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-green);
}

.cart-summary {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    text-align: right;
}

.cart-total {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #fff;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--bg-card);
    border: 1px solid var(--accent-green);
    color: #fff;
    padding: 15px 25px;
    border-radius: 4px;
    z-index: 2000;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
    transform: translateY(100px);
    opacity: 0;
    transition: 0.3s;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* Footer */
footer {
    background: #020202;
    padding: 60px 0 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 50px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    color: #fff;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

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

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: 0.3s;
}

.footer-col ul li a:hover {
    color: var(--accent-green);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: #555;
    font-size: 0.9rem;
}

/* Legal Page */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding-top: 120px;
}

.legal-content h1 {
    margin-bottom: 40px;
    color: var(--accent-green);
}

.legal-content h2 {
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.legal-content p {
    margin-bottom: 15px;
    color: #ccc;
}

/* Animations */
@keyframes glow {
    0% { text-shadow: 0 0 5px var(--accent-green); }
    50% { text-shadow: 0 0 20px var(--accent-green), 0 0 10px var(--accent-blue); }
    100% { text-shadow: 0 0 5px var(--accent-green); }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    
    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: #050505;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .btn-group {
        flex-direction: column;
        width: 100%;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}