/* CSS Variables for Theming */
:root {
    /* Primary Colors */
    --primary-bg: #0a0a0a;
    --secondary-bg: #1a1a1a;
    --tertiary-bg: #2a2a2a;
    
    /* Accent Colors */
    --accent-primary: #00ffff;
    --accent-secondary: #00ff00;
    --accent-tertiary: #ffff00;
    
    /* Neon Colors */
    --neon-cyan: #00ffff;
    --neon-magenta: #00ff00;
    --neon-yellow: #ffff00;
    --neon-green: #00ff00;
    --neon-blue: #0080ff;
    --neon-red: #40ff40;
    
    /* Steam Colors */
    --steam-blue: #1b2838;
    --steam-light-blue: #2a475e;
    --steam-green: #90ba3c;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-muted: #888888;
    --text-dark: #333333;
    
    /* Glass Effect */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-backdrop: blur(20px);
    
    /* Shadows */
    --shadow-light: 0 4px 15px rgba(0, 255, 255, 0.2);
    --shadow-medium: 0 8px 30px rgba(0, 255, 255, 0.3);
    --shadow-heavy: 0 15px 60px rgba(0, 255, 255, 0.4);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
    
    /* Sizes */
    --border-radius: 12px;
    --border-radius-small: 8px;
    --border-radius-large: 20px;
    
    /* Fonts */
    --font-primary: 'Orbitron', monospace;
    --font-secondary: 'Exo 2', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    background: var(--primary-bg);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    /* Фиксы для масштабирования */
    min-height: 100vh;
    position: relative;
    width: 100%;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 700;
    line-height: 1.2;
}

.holographic-text {
    background: linear-gradient(45deg, var(--neon-cyan), var(--neon-magenta), var(--neon-yellow));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: hologram 3s ease-in-out infinite;
    text-shadow: 
        0 0 10px var(--neon-cyan),
        0 0 20px var(--neon-cyan),
        0 0 30px var(--neon-cyan);
}

.neon-text {
    color: var(--neon-cyan);
    text-shadow: 
        0 0 5px var(--neon-cyan),
        0 0 10px var(--neon-cyan),
        0 0 15px var(--neon-cyan),
        0 0 20px var(--neon-cyan);
}

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

/* Loading Screen - Отключено */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-bg);
    display: none; /* Отключено по умолчанию */
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.cyber-logo {
    margin-bottom: 2rem;
}

.logo-img {
    width: 80px;
    height: 80px;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 20px var(--neon-cyan));
}

.loading-bar {
    width: 300px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin: 2rem auto;
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--neon-cyan), var(--neon-magenta));
    width: 0%;
    animation: loading 2s ease-in-out forwards;
}

.loading-text {
    color: var(--text-secondary);
    font-family: var(--font-primary);
}

/* Navigation */
.cyber-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 20, 30, 0.12);
    backdrop-filter: blur(25px) saturate(200%);
    border-bottom: 1px solid rgba(0, 255, 255, 0.25);
    z-index: 10000;
    padding: 1rem 0;
    transition: all var(--transition-medium);
    /* Прозрачно-глянцевый эффект такой же как в footer */
    box-shadow: 
        0 8px 32px rgba(0, 255, 255, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.15),
        inset 0 -1px 0 rgba(0, 0, 0, 0.2),
        0 4px 16px rgba(0, 0, 0, 0.3);
    -webkit-backdrop-filter: blur(25px) saturate(200%);
    /* Дополнительный стеклянный блеск */
    background-image: linear-gradient(45deg, 
        rgba(255, 255, 255, 0.1) 0%, 
        rgba(255, 255, 255, 0.05) 50%, 
        rgba(0, 255, 255, 0.05) 100%);
}
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-logo {
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 0 10px var(--neon-cyan));
}

.brand-text {
    font-size: 1.5rem;
    font-weight: 900;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-small);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--neon-cyan);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-light);
    text-shadow: 0 0 10px var(--neon-cyan);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background: var(--neon-cyan);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* Main Content */
.main-content {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
    position: relative;
}

.section {
    padding: 4rem 0;
    display: none;
}

.section.active {
    display: block;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Hero Section */
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 6rem;
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-features {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--neon-cyan);
}

.feature-item i {
    font-size: 1.2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    transform: translateZ(0);
    backface-visibility: hidden;
}

.floating-card {
    position: fixed !important;
    bottom: 30px !important;
    right: 30px !important;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius-large);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-light);
    transform: perspective(1000px) rotateY(-15deg) translateY(0px) scale(1);
    opacity: 0;
    visibility: hidden;
    will-change: transform, opacity, visibility;
    z-index: 999 !important;
    max-width: 250px;
    display: none;
    /* Cache buster v2.1 */
}

.floating-card.show {
    display: block !important;
    opacity: 0.85;
    visibility: visible;
    animation: float 8s ease-in-out infinite;
}

.floating-card i {
    font-size: 3rem;
    color: var(--neon-cyan);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 15px var(--neon-cyan);
    opacity: 0.9;
    transition: all 0.3s ease;
}

.floating-card h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.floating-card p {
    color: var(--text-secondary);
    opacity: 0.8;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition-medium);
}

.stat-card:hover {
    box-shadow: var(--shadow-medium);
    border-color: var(--neon-cyan);
}

.stat-number {
    font-size: 3rem;
    font-family: var(--font-primary);
    font-weight: 900;
    color: var(--neon-cyan);
    text-shadow: 0 0 15px var(--neon-cyan);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Buttons */
.cyber-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: transparent;
    border: 2px solid var(--neon-cyan);
    border-radius: var(--border-radius);
    color: var(--neon-cyan);
    font-family: var(--font-primary);
    font-weight: 1000;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.cyber-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
    opacity: 0.2;
    transition: left var(--transition-medium);
}

.cyber-button:hover::before {
    left: 100%;
}

.cyber-button:hover {
    background: var(--neon-cyan);
    color: var(--primary-bg);
    box-shadow: 
        0 0 20px var(--neon-cyan),
        inset 0 0 20px rgba(0, 255, 255, 0.2);
    text-shadow: none;
}

.cyber-button.primary {
    background: var(--neon-cyan);
    color: var(--primary-bg);
    border-color: var(--neon-cyan);
}

.cyber-button.primary:hover {
    background: transparent;
    color: var(--neon-cyan);
    text-shadow: 0 0 10px var(--neon-cyan);
}

.cyber-button.secondary {
    background: var(--neon-green);
    border-color: var(--neon-green);
    color: var(--primary-bg);
}

.cyber-button.secondary:hover {
    background: transparent;
    color: var(--neon-green);
    box-shadow: 0 0 20px var(--neon-green);
    text-shadow: 0 0 10px var(--neon-green);
}

.cyber-button.small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* Cards */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    transition: all var(--transition-medium);
}

.glass-card:hover {
    box-shadow: var(--shadow-medium);
    border-color: var(--neon-cyan);
}



/* Animations */
@keyframes hologram {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes floatingCardAppear {
    0% {
        transform: perspective(1000px) rotateY(-15deg) translateY(200px) scale(0.1);
        opacity: 0;
        visibility: hidden;
    }
    1% {
        visibility: visible;
    }
    20% {
        transform: perspective(1000px) rotateY(-12deg) translateY(100px) scale(0.4);
        opacity: 0.1;
    }
    40% {
        transform: perspective(1000px) rotateY(-10deg) translateY(50px) scale(0.7);
        opacity: 0.3;
    }
    60% {
        transform: perspective(1000px) rotateY(-13deg) translateY(20px) scale(0.9);
        opacity: 0.5;
    }
    80% {
        transform: perspective(1000px) rotateY(-12deg) translateY(-5px) scale(1.02);
        opacity: 0.7;
    }
    100% {
        transform: perspective(1000px) rotateY(-15deg) translateY(0px) scale(1);
        opacity: 0.85;
        visibility: visible;
    }
}

@keyframes float {
    0%, 100% { 
        transform: perspective(1000px) rotateY(-15deg) translateY(0px) scale(1);
        opacity: 0.85;
    }
    25% { 
        transform: perspective(1000px) rotateY(-12deg) translateY(-8px) scale(1.02);
        opacity: 0.9;
    }
    50% { 
        transform: perspective(1000px) rotateY(-18deg) translateY(-15px) scale(1.05);
        opacity: 0.95;
    }
    75% { 
        transform: perspective(1000px) rotateY(-12deg) translateY(-8px) scale(1.02);
        opacity: 0.9;
    }
}

@keyframes loading {
    0% { width: 0%; }
    100% { width: 100%; }
}

@keyframes glow {
    0%, 100% { 
        text-shadow: 
            0 0 5px var(--neon-cyan),
            0 0 10px var(--neon-cyan),
            0 0 15px var(--neon-cyan);
    }
    50% { 
        text-shadow: 
            0 0 10px var(--neon-cyan),
            0 0 20px var(--neon-cyan),
            0 0 30px var(--neon-cyan);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.hidden { display: none !important; }
.visible { display: block !important; }

.fade-in {
    animation: fadeIn 0.6s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}