:root {
    --primary: #0066ff;
    --primary-hover: #0052cc;
    --secondary: #00c853;
    --secondary-hover: #00a842;
    --bg-dark: #0a0a0a;
    --bg-dark-secondary: #141414;
    --bg-dark-tertiary: #1a1a1a;
    --bg-light: #ffffff;
    --bg-light-secondary: #f5f5f5;
    --bg-light-tertiary: #ebebeb;
    --text-dark: #ffffff;
    --text-dark-secondary: #a0a0a0;
    --text-light: #1a1a1a;
    --text-light-secondary: #666666;
    --border-dark: #2a2a2a;
    --border-light: #e0e0e0;
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-hero: radial-gradient(ellipse at top, rgba(0, 102, 255, 0.15) 0%, transparent 50%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.3s ease;
}

[data-theme="light"] {
    --bg: var(--bg-light);
    --bg-secondary: var(--bg-light-secondary);
    --bg-tertiary: var(--bg-light-tertiary);
    --text: var(--text-light);
    --text-secondary: var(--text-light-secondary);
    --border: var(--border-light);
    --shadow: var(--shadow-sm);
}

[data-theme="dark"] {
    --bg: var(--bg-dark);
    --bg-secondary: var(--bg-dark-secondary);
    --bg-tertiary: var(--bg-dark-tertiary);
    --text: var(--text-dark);
    --text-secondary: var(--text-dark-secondary);
    --border: var(--border-dark);
    --shadow: var(--shadow-md);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background var(--transition), color var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-dark);
    transition: background var(--transition);
}

[data-theme="light"] .header {
    background: rgba(255, 255, 255, 0.9);
    border-bottom-color: var(--border-light);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 1.4rem;
}

.logo-icon {
    font-size: 1.6rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.lang-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
    transition: all var(--transition);
}

.lang-toggle:hover {
    border-color: var(--primary);
}

.lang-active {
    color: var(--primary);
}

.lang-separator {
    margin: 0 4px;
    color: var(--text-secondary);
}

.lang-inactive {
    color: var(--text-secondary);
}

.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.theme-toggle:hover {
    border-color: var(--primary);
}

[data-theme="dark"] .theme-icon-light,
[data-theme="light"] .theme-icon-dark {
    display: none;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: all var(--transition);
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

[data-theme="light"] .hero-grid {
    background-image: 
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

.hero-content {
    text-align: center;
    padding: 80px 0;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-title span {
    display: block;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto 48px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--secondary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--border);
}

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

.features {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 64px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin-top: 64px;
}

.feature-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    stroke: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.install {
    padding: 120px 0;
}

.install-command {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin: 48px auto;
    max-width: 700px;
}

.install-command code {
    flex: 1;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.95rem;
    color: var(--text);
    overflow-x: auto;
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition);
}

.copy-btn:hover {
    background: var(--primary-hover);
}

.copy-btn svg {
    width: 18px;
    height: 18px;
}

.install-alternatives {
    max-width: 700px;
    margin: 64px auto 0;
}

.install-alternatives h3 {
    text-align: center;
    margin-bottom: 24px;
}

.install-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    justify-content: center;
}

.install-tab {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 20px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.install-tab:hover {
    color: var(--text);
}

.install-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.install-panel {
    display: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    overflow-x: auto;
}

.install-panel.active {
    display: block;
}

.install-panel pre {
    margin: 0;
}

.install-panel code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.9rem;
    color: var(--text);
    white-space: pre;
}

.download {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-top: 64px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.download-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    transition: all var(--transition);
}

.download-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.download-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.download-icon svg {
    width: 48px;
    height: 48px;
}

.download-icon.android {
    background: linear-gradient(135deg, #3ddc84 0%, #00c853 100%);
    color: white;
}

.download-icon.ios {
    background: linear-gradient(135deg, #555 0%, #1a1a1a 100%);
    color: white;
}

.download-card h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.download-version {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.btn-download {
    width: 100%;
    justify-content: center;
}

.download-requirements {
    margin-top: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.server-install {
    padding: 120px 0;
}

.server-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    margin-top: 64px;
}

.server-info h3,
.server-requirements h3 {
    font-size: 1.25rem;
    margin-bottom: 24px;
}

.server-components {
    list-style: none;
}

.server-components li {
    display: flex;
    gap: 16px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
}

.server-components li:last-child {
    border-bottom: none;
}

.component-icon {
    font-size: 2rem;
}

.server-components strong {
    display: block;
    margin-bottom: 4px;
}

.server-components span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.requirements-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 32px;
}

.requirements-table th,
.requirements-table td {
    text-align: left;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.requirements-table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
}

.requirements-table td:first-child {
    font-weight: 500;
}

.arch-badges {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.arch-badge {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 16px;
    font-family: 'SF Mono', monospace;
    font-size: 0.85rem;
}

.about {
    padding: 120px 0;
    background: var(--bg-secondary);
}

.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.about-content p:last-child {
    margin-bottom: 0;
}

.footer {
    background: var(--bg-dark);
    border-top: 1px solid var(--border-dark);
    padding: 64px 0 32px;
}

[data-theme="light"] .footer {
    background: var(--bg-light-secondary);
    border-top-color: var(--border-light);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 12px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-column h4 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

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

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    color: var(--text);
    text-decoration: none;
    transition: color var(--transition);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    color: var(--text-secondary);
    transition: color var(--transition);
}

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

.social-links svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 968px) {
    .nav-links {
        display: none;
    }

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

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .server-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

@media (max-width: 640px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .install-command {
        flex-direction: column;
        text-align: center;
    }

    .install-command code {
        font-size: 0.8rem;
    }

    .install-tabs {
        flex-wrap: wrap;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.feature-card {
    animation: fadeInUp 0.8s ease-out;
    animation-fill-mode: both;
}

.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; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }
/* Links whose artifact is intentionally not published yet. */
.is-unavailable {
    opacity: 0.55;
    cursor: not-allowed;
}