:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --accent: #f59e0b;
    --dark: #1f2937;
    --darker: #0f172a;
    --light: #f9fafb;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --ai-gradient: linear-gradient(135deg, #00d2ff 0%, #3a7bd5 100%);
    --neon-glow: 0 0 10px rgba(99, 102, 241, 0.5);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--light);
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark) 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
}

.logo i {
    color: var(--primary);
    font-size: 2rem;
}

.admin-link {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #cbd5e1;
    text-decoration: none;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.admin-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    z-index: -1;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    background: var(--ai-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.ai-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--ai-gradient);
    color: white;
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    animation: pulse 2s infinite;
    box-shadow: var(--neon-glow);
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: var(--neon-glow); }
    50% { transform: scale(1.05); box-shadow: 0 0 20px rgba(99, 102, 241, 0.8); }
    100% { transform: scale(1); box-shadow: var(--neon-glow); }
}

/* Products Section */
.products {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.02);
}

.section-title {
    text-align: center;
    font-size: clamp(2rem, 4vw, 2.5rem);
    color: white;
    margin-bottom: 3rem;
    background: var(--ai-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.product-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.product-card:hover::before {
    left: 100%;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
    border-color: rgba(99, 102, 241, 0.3);
}

.product-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: var(--ai-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80px;
}

.custom-icon {
    max-width: 80px;
    max-height: 80px;
    object-fit: contain;
}

.product-card h3 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.product-card p {
    color: #cbd5e1;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

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

.features li {
    color: #e2e8f0;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
}

.features li i {
    color: var(--secondary);
    margin-top: 3px;
    flex-shrink: 0;
}

.version-tabs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
}

.version-tab {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1.2rem;
    transition: all 0.3s ease;
}

.version-tab:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(99, 102, 241, 0.3);
}

.version-tab h4 {
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.version-tab p {
    color: #94a3b8;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.download-btn {
    display: inline-block;
    background: var(--ai-gradient);
    color: white;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
}

/* Contact Section */
.contact {
    padding: 80px 0;
    text-align: center;
    background: rgba(255, 255, 255, 0.02);
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #cbd5e1;
    font-size: 1.1rem;
}

.contact-item i {
    color: var(--primary);
    font-size: 1.5rem;
}

/* Footer */
footer {
    background: rgba(15, 23, 42, 0.95);
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
    color: #94a3b8;
    font-size: 0.9rem;
}

/* Flash Messages */
.flash-messages {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1001;
    max-width: 400px;
}

.flash-message {
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: slideIn 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.flash-success {
    background: var(--secondary);
    color: white;
}

.flash-error {
    background: #ef4444;
    color: white;
}

.flash-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    margin-left: 1rem;
    opacity: 0.8;
}

.flash-close:hover {
    opacity: 1;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 120px 0 60px;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .product-card {
        padding: 2rem;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .flash-messages {
        left: 20px;
        right: 20px;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .product-card {
        padding: 1.5rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
}