:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #1c2128;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --accent-primary: #58a6ff;
    --accent-secondary: #1f6feb;
    --accent-success: #3fb950;
    --border-color: #30363d;
    --code-bg: #161b22;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Navigation */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav {
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.github-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

/* Hero Section */
.hero {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-content {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-success) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--text-secondary);
}

.hero-code {
    max-width: 600px;
    margin: 0 auto;
}

.hero-code pre {
    background-color: var(--code-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow-x: auto;
}

.hero-code code {
    color: var(--accent-success);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.95rem;
}

/* Sections */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    font-weight: 700;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
}

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

.feature-card {
    background-color: var(--bg-tertiary);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

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

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

/* Tools Section */
.tools {
    padding: 6rem 0;
}

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

.tool-category {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.tool-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
}

.tool-category ul {
    list-style: none;
}

.tool-category li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.tool-category li:last-child {
    border-bottom: none;
}

.tool-category strong {
    color: var(--text-primary);
}

/* Installation Section */
.installation {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
}

.installation-steps {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    align-items: flex-start;
}

.step-number {
    background: linear-gradient(135deg, var(--accent-secondary) 0%, var(--accent-primary) 100%);
    color: white;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.step-content pre {
    background-color: var(--code-bg);
    padding: 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    margin: 1rem 0;
    overflow-x: auto;
}

.step-content code {
    color: var(--accent-success);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.9rem;
}

.step-content p {
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Configuration Section */
.configuration {
    padding: 6rem 0;
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.config-section {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.config-section h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--accent-primary);
}

.config-section h4 {
    font-size: 1.25rem;
    margin: 1.5rem 0 1rem;
    color: var(--text-primary);
}

.keybind-list,
.plugin-list {
    list-style: none;
}

.keybind-list li,
.plugin-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.keybind-list li:last-child,
.plugin-list li:last-child {
    border-bottom: none;
}

kbd,
code {
    background-color: var(--code-bg);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    color: var(--accent-primary);
}

/* Structure Section */
.structure {
    padding: 6rem 0;
    background-color: var(--bg-secondary);
}

.structure-content pre {
    background-color: var(--code-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow-x: auto;
    max-width: 800px;
    margin: 0 auto;
}

.structure-content code {
    color: var(--text-secondary);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
}

/* CTA Section */
.cta {
    padding: 6rem 0;
    text-align: center;
}

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

.cta p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    text-align: center;
}

.footer-support {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
}

.footer p {
    color: var(--text-secondary);
    margin: 0.5rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

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

    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
    }

    .feature-grid,
    .tools-grid,
    .config-grid {
        grid-template-columns: 1fr;
    }

    .step {
        flex-direction: column;
    }

    .container {
        padding: 0 1rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection styling */
::selection {
    background-color: var(--accent-primary);
    color: white;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 6px;
    border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}