/* =========================================
   BEKASYSTEM - MODERN PREMIUM DESIGN
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@500;600;700;800&display=swap');

:root {
    /* Modern Color Palette */
    --color-bg: #0a0e27;
    --color-bg-secondary: #121736;
    --color-surface: rgba(18, 23, 54, 0.8);
    --color-primary: #ff6b35;
    --color-primary-light: #ff8c61;
    --color-accent: #00d4ff;
    --color-accent-secondary: #6366f1;
    --color-text: #ffffff;
    --color-text-muted: #a0aec0;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-hero: linear-gradient(135deg, #0a0e27 0%, #1a1f4d 50%, #0a0e27 100%);
    
    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --container-width: 1280px;
    --section-spacing: 120px;
}

/* =========================================
   RESET & BASE
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(245, 87, 108, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* =========================================
   TYPOGRAPHY
   ========================================= */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    line-height: 1.2;
    font-weight: 700;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    font-weight: 600;
}

p {
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
    line-height: 1.8;
}

.text-gradient {
    background: linear-gradient(135deg, #fff 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* =========================================
   LAYOUT
   ========================================= */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

.section {
    padding: var(--section-spacing) 0;
    position: relative;
}

.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

/* =========================================
   COMPONENTS
   ========================================= */

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    box-shadow: 0 10px 40px -10px rgba(255, 107, 53, 0.6);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 50px -10px rgba(255, 107, 53, 0.8);
}

.btn-outline {
    border: 2px solid rgba(255,255,255,0.3);
    color: white;
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: white;
}

/* Glass Card */
.glass-card {
    background: var(--color-surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 2.5rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.glass-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255,255,255,0.2);
    box-shadow: 0 20px 60px -10px rgba(0,0,0,0.5);
}

/* =========================================
   HEADER
   ========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.4s ease;
    padding: 1.5rem 0;
}

.header.scrolled {
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(20px);
    padding: 1rem 0;
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

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

.logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.75rem;
    color: white;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo i {
    font-size: 2rem;
}

.logo span { 
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
    position: relative;
}

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

.nav-links a:hover,
.nav-links a.active {
    color: white;
}

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

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.15) 0%, transparent 70%);
    animation: pulse 8s ease-in-out 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 {
    max-width: 900px;
    position: relative;
    z-index: 2;
    padding-top: 80px;
}

.hero-badges {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.badge {
    background: rgba(255, 107, 53, 0.15);
    border: 1px solid rgba(255, 107, 53, 0.3);
    color: var(--color-primary-light);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    backdrop-filter: blur(10px);
}

/* =========================================
   FEATURES
   ========================================= */
.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: white;
    box-shadow: 0 10px 30px -10px rgba(102, 126, 234, 0.5);
    transition: transform 0.3s ease;
}

.glass-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

/* =========================================
   PRODUCT SHOWCASE
   ========================================= */
.product-showcase {
    background: var(--color-bg-secondary);
    position: relative;
}

.product-showcase::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.product-image {
    position: relative;
    padding: 3rem;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    border-radius: 30px;
}

.product-image img {
    border-radius: 20px;
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255,255,255,0.1);
}

.tech-list li {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255,255,255,0.03);
    border-radius: 12px;
    border-left: 3px solid var(--color-primary);
    transition: all 0.3s ease;
}

.tech-list li:hover {
    background: rgba(255,255,255,0.05);
    transform: translateX(10px);
}

.tech-list i {
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

/* =========================================
   MODELS GRID
   ========================================= */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.model-card {
    position: relative;
}

.model-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.model-card:hover::after {
    transform: scaleX(1);
}

.model-card h3 {
    margin-bottom: 1rem;
    color: white;
}

.tags {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.tag {
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-accent);
    border: 1px solid rgba(0, 212, 255, 0.2);
    font-weight: 500;
}

/* =========================================
   STATS SECTION
   ========================================= */
.stats-section {
    background: var(--gradient-primary);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><rect width="100" height="100" fill="none"/><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></svg>');
    opacity: 0.3;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    position: relative;
    z-index: 1;
}

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

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: white;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: rgba(255,255,255,0.9);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
    border-top: 1px solid rgba(255,255,255,0.05);
    background: var(--color-bg);
    padding-top: 5rem;
    padding-bottom: 2rem;
    position: relative;
}

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

.footer h4 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer ul li {
    margin-bottom: 0.75rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* =========================================
   ANIMATIONS
   ========================================= */
.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 968px) {
    :root {
        --section-spacing: 80px;
    }
    
    .grid-2, .grid-3 { 
        grid-template-columns: 1fr; 
    }
    
    .product-grid { 
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-grid { 
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .nav-links { 
        display: none;
    }
    
    .hero-content {
        padding-top: 100px;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .glass-card {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.875rem 2rem;
        font-size: 0.9rem;
    }
}