:root {
    --primary: #2E8B57;
    --primary-dark: #1e6b46;
    --secondary: #4a6572;
    --dark: #121212;
    --darker: #0a0a0a;
    --light: #1e1e1e;
    --lighter: #2d2d2d;
    --text: #e0e0e0;
    --text-muted: #a0a0a0;
    --accent: #ff9800;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    
    /* Новые переменные для эффекта стекла */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --backdrop-blur: blur(20px);
}

.light-theme {
    --dark: #f5f7fa;
    --darker: #ffffff;
    --light: #ffffff;
    --lighter: #f9f9f9;
    --text: #333333;
    --text-muted: #666666;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    
    /* Стекло для светлой темы */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border-bottom: 1px solid var(--glass-border);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--glass-shadow);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo i {
    font-size: 1.8rem;
}

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

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

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

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

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

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 5rem 0;
    background: linear-gradient(135deg, 
        rgba(46, 139, 87, 0.8) 0%, 
        rgba(74, 101, 114, 0.8) 100%),
        url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.light-theme .hero {
    background: linear-gradient(135deg, 
        rgba(46, 139, 87, 0.6) 0%, 
        rgba(74, 101, 114, 0.6) 100%),
        url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=1350&q=80');
}

/* Кнопки */
.btn {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    display: inline-block;
    padding: 12px 30px;
    color: white;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--glass-shadow);
}

.btn:hover {
    background: var(--accent);
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: 0 15px 25px rgba(0, 0, 0, 0.4);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--glass-border);
    margin-left: 15px;
}

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

/* Features Section */
.features {
    padding: 5rem 0;
    background-color: var(--darker);
    transition: background-color 0.3s ease;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--text);
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.section-title p {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
    transition: color 0.3s ease;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* Карточки с эффектом стекла */
.feature-card {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--glass-shadow);
    transition: all 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text);
    transition: color 0.3s ease;
}

.feature-card p {
    color: var(--text-muted);
    transition: color 0.3s ease;
}

/* Download Section */
.download {
    padding: 5rem 0;
    background: linear-gradient(135deg, 
        rgba(46, 139, 87, 0.9) 0%, 
        rgba(74, 101, 114, 0.9) 100%);
    color: white;
    text-align: center;
    position: relative;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
}

.download-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Version info с эффектом стекла */
.version-info {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin: 2rem 0;
    text-align: left;
    box-shadow: var(--glass-shadow);
}

.version-info h3 {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.version-info ul {
    list-style-type: none;
}

.version-info li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
    color: rgba(255, 255, 255, 0.9);
}

.version-info li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
}

/* Screenshots Section */
.screenshots {
    padding: 5rem 0;
    background-color: var(--darker);
    transition: background-color 0.3s ease;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Скриншоты с эффектом стекла */
.screenshot {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 500;
    position: relative;
}

.screenshot:before {
    content: '';
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    border: 2px dashed var(--glass-border);
    border-radius: 5px;
}

.screenshot:hover {
    transform: scale(1.03);
    border-color: var(--accent);
}

/* Footer */
footer {
    background-color: var(--darker);
    color: var(--text);
    padding: 3rem 0 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.light-theme footer {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

/* Footer columns с эффектом стекла */
.footer-column {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--glass-shadow);
}

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 10px;
    color: var(--text);
    transition: color 0.3s ease;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--accent);
}

.footer-links {
    list-style-type: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Социальные иконки с эффектом стекла */
.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--text);
    transition: all 0.3s ease;
    box-shadow: var(--glass-shadow);
}

.social-links a:hover {
    background: var(--accent);
    transform: translateY(-5px);
    border-color: var(--accent);
}

.copyright {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.light-theme .copyright {
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

/* Theme Toggle */
.theme-toggle {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--glass-shadow);
    z-index: 1000;
    transition: all 0.3s ease;
    color: var(--text);
}

.theme-toggle:hover {
    transform: scale(1.1);
    background: var(--glass-bg);
    border-color: var(--accent);
}

.theme-toggle i {
    font-size: 1.2rem;
}

/* FAQ Section */
.faq-section {
    padding: 5rem 0;
    background-color: var(--darker);
}

/* FAQ items с эффектом стекла */
.faq-item {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--glass-shadow);
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--accent);
}

.faq-question {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.faq-answer {
    color: var(--text-muted);
}

/* Documentation Section */
.docs-section {
    padding: 5rem 0;
    background-color: var(--darker);
}

/* Documentation content с эффектом стекла */
.docs-content {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--glass-shadow);
}

.docs-step {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.light-theme .docs-step {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.docs-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.docs-step h4 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* Legal Sections */
.legal-section {
    padding: 5rem 0;
    background-color: var(--darker);
}

/* Legal content с эффектом стекла */
.legal-content {
    background: var(--glass-bg);
    backdrop-filter: var(--backdrop-blur);
    -webkit-backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--glass-shadow);
}

.legal-article {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.light-theme .legal-article {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.legal-article:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.legal-article h4 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.legal-warning {
    background: rgba(255, 68, 68, 0.1);
    border-left: 4px solid #ff4444;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 4px;
}

.legal-note {
    background: rgba(255, 193, 7, 0.1);
    border-left: 4px solid #ffc107;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 4px;
}

/* Footer Legal Links */
.footer-legal {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.footer-legal a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

/* Анимация появления элементов с стеклом */
@keyframes glassFadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.faq-item,
.docs-content,
.legal-content {
    animation: glassFadeIn 0.6s ease-out;
}

/* Задержки для анимации карточек */
.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--glass-bg);
        backdrop-filter: var(--backdrop-blur);
        -webkit-backdrop-filter: var(--backdrop-blur);
        border: 1px solid var(--glass-border);
        flex-direction: column;
        padding: 1rem;
        text-align: center;
    }

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

    .mobile-menu {
        display: block;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .btn {
        display: block;
        width: 100%;
        margin-bottom: 1rem;
    }

    .btn-secondary {
        margin-left: 0;
    }

    .footer-legal {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}