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

:root {
    --fg: #000;
    --bg: #fff;
    --muted: #666;
    --subtle: #f5f5f5;
    --border: 2px solid #000;
    --code-bg: #1a1a1a;
    --code-fg: #e0e0e0;
    --dot: 1px;
    --dot-color: #d0d0d0;
    --gap: 22px;
    --sidebar-w: 300px;
    --content-w: 1020px;
}

[data-theme="dark"] {
    --fg: #e0e0e0;
    --bg: #111;
    --muted: #999;
    --subtle: #1a1a1a;
    --border: 2px solid #333;
    --code-bg: #0d0d0d;
    --dot-color: #222;
}

[data-theme="dark"] article code {
    border-color: #333;
}
[data-theme="dark"] .install-box {
    border-color: #333;
}

html {
    font-size: 15px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family:
        "JetBrains Mono", "SF Mono", "Fira Code", "Cascadia Code", monospace;
    background: var(--bg)
        radial-gradient(
            circle,
            var(--dot-color) var(--dot),
            transparent var(--dot)
        );
    background-size: var(--gap) var(--gap);
    color: var(--fg);
    display: flex;
    min-height: 100vh;
}

a {
    color: var(--fg);
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
}

a:hover {
    background: var(--fg);
    color: var(--bg);
    text-decoration: none;
}

#sidebar {
    width: var(--sidebar-w);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    overflow-y: auto;
    border-right: var(--border);
    background: var(--bg);
    padding: 1.5rem 1rem;
    z-index: 10;
    display: flex;
    flex-direction: column;
}

#sidebar::-webkit-scrollbar {
    width: 4px;
}
#sidebar::-webkit-scrollbar-thumb {
    background: var(--fg);
}

.sidebar-header {
    margin-bottom: 1.5rem;
}

.sidebar-header h1 {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 0.15rem;
}

.sidebar-header p {
    font-size: 0.7rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 700;
}

#search {
    width: 100%;
    padding: 0.5rem 0.6rem;
    border: var(--border);
    background: var(--bg);
    color: var(--fg);
    font-family: inherit;
    font-size: 0.8rem;
    margin-top: 0.8rem;
    outline: none;
}

#search:focus {
    background: var(--subtle);
}
#search::placeholder {
    color: var(--muted);
}

#version-select {
    width: 100%;
    padding: 0.4rem 0.6rem;
    border: var(--border);
    background: var(--bg);
    color: var(--fg);
    font-family: inherit;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.5rem;
    cursor: pointer;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

#version-select:hover {
    background: var(--fg);
    color: var(--bg);
}

#theme-toggle {
    width: 100%;
    padding: 0.4rem 0.6rem;
    border: var(--border);
    background: var(--bg);
    color: var(--fg);
    font-family: inherit;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.5rem;
    cursor: pointer;
}

#theme-toggle:hover {
    background: var(--fg);
    color: var(--bg);
}

#nav-links {
    flex: 1;
    overflow-y: auto;
}

.nav-category {
    font-weight: 900;
    text-transform: uppercase;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    margin-top: 1.4rem;
    padding-bottom: 0.3rem;
    border-bottom: var(--border);
    color: var(--fg);
}

.nav-link {
    display: block;
    padding: 0.25rem 0.5rem;
    text-decoration: none;
    color: var(--fg);
    font-size: 0.8rem;
    border-left: 3px solid transparent;
    margin-top: 1px;
}

.nav-link:hover,
.nav-link.active {
    background: var(--fg);
    color: var(--bg);
    border-left-color: var(--fg);
}

#content {
    margin-left: var(--sidebar-w);
    flex: 1;
    display: flex;
    justify-content: center;
}

article {
    width: 100%;
    max-width: var(--content-w);
    padding: 2.5rem 3rem;
    background: var(--bg);
    min-height: 100vh;
    border-left: 1px solid var(--subtle);
    border-right: 1px solid var(--subtle);
}

article h1 {
    font-size: 2rem;
    font-weight: 900;
    letter-spacing: -0.03em;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--fg);
}

article h2 {
    font-size: 1.3rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    margin-top: 2.5rem;
    margin-bottom: 0.8rem;
    padding-bottom: 0.3rem;
    border-bottom: var(--border);
}

article h3 {
    font-size: 1.05rem;
    font-weight: 900;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
}

article h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-top: 1.5rem;
    margin-bottom: 0.4rem;
}

article p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 0.8rem;
}

article ul,
article ol {
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    font-size: 0.9rem;
    line-height: 1.7;
}

article li {
    margin-bottom: 0.25rem;
}

article hr {
    border: none;
    border-top: var(--border);
    margin: 2rem 0;
}

article blockquote {
    border-left: 4px solid var(--fg);
    padding: 0.5rem 1rem;
    margin: 1rem 0;
    background: var(--subtle);
    font-size: 0.85rem;
}

blockquote p {
    margin: 0;
}

article table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.85rem;
}

article th,
article td {
    border: var(--border);
    padding: 0.5rem 0.7rem;
    text-align: left;
}

article th {
    background: var(--fg);
    color: var(--bg);
    font-weight: 900;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

article code {
    font-family: inherit;
    background: var(--subtle);
    padding: 0.15em 0.35em;
    border: 1px solid #ccc;
    font-size: 0.85em;
}

article pre {
    background: var(--code-bg);
    color: var(--code-fg);
    padding: 1.2rem 1.5rem;
    border: var(--border);
    overflow-x: auto;
    margin: 1rem 0;
    line-height: 1.4;
    position: relative;
}

article pre code {
    background: none;
    border: none;
    padding: 0;
    color: inherit;
    font-size: 0.82rem;
}

article pre code.hljs {
    background: none;
    padding: 0;
}

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: transparent;
    border: 1px solid #555;
    color: #888;
    font-family: inherit;
    font-size: 0.65rem;
    padding: 0.2rem 0.5rem;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0;
    transition: opacity 0.15s;
}

article pre:hover .copy-btn {
    opacity: 1;
}
.copy-btn:hover {
    background: var(--bg);
    color: var(--fg);
    border-color: var(--bg);
}
.copy-btn.copied {
    background: #2a2;
    color: #fff;
    border-color: #2a2;
}

.hero {
    text-align: center;
    padding: 3rem 0 2rem;
}

.hero h1 {
    font-size: 3.5rem;
    letter-spacing: -0.06em;
    border: none;
    padding: 0;
    margin-bottom: 0.3rem;
}

.hero .tagline {
    font-size: 1rem;
    color: var(--muted);
    font-weight: 400;
    margin-bottom: 2rem;
}

.hero .hero-description {
    font-size: 0.85rem;
    line-height: 1.7;
    text-align: left;
}

.hero-links {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.hero-btn {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border: var(--border);
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    text-decoration: none;
    color: var(--fg);
    background: var(--bg);
}

.hero-btn:hover {
    background: var(--fg);
    color: var(--bg);
}
.hero-btn-sponsor {
    background: var(--fg);
    color: var(--bg);
}
.hero-btn-sponsor:hover {
    background: var(--bg);
    color: var(--fg);
}

.install-box {
    display: inline-block;
    background: var(--fg);
    color: var(--bg);
    padding: 0.8rem 2rem;
    border: var(--border);
    font-family: inherit;
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.feature {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border: var(--border);
    margin: 2rem 0;
    overflow: hidden;
}

.feature:nth-child(even) .feature-code {
    order: 2;
}
.feature:nth-child(even) .feature-text {
    order: 1;
}

.feature-code {
    background: var(--code-bg);
    padding: 1.5rem;
    overflow-x: auto;
}

.feature-code pre {
    margin: 0;
    border: none;
    background: none;
    padding: 0;
}
.feature-code code {
    font-size: 0.78rem;
    line-height: 1.3;
    background: none;
    border: none;
    padding: 0;
    color: var(--code-fg);
}

.feature-text {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.feature-text h3 {
    font-size: 1.1rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.feature-text p {
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.feature-links {
    display: flex;
    gap: 0.8rem;
    font-size: 0.75rem;
}
.feature-links a {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.category-section {
    margin-top: 2.5rem;
}

.category-section h2 {
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-bottom: 3px solid var(--fg);
    padding-bottom: 0.3rem;
    margin-bottom: 0;
}

.component-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.component-card {
    border: var(--border);
    padding: 1rem;
    background: var(--bg);
    transition: background 0.05s;
}

.component-card:hover {
    background: var(--fg);
    color: var(--bg);
    box-shadow: inset 0 3px 0 var(--accent, var(--fg));
}

.component-card a {
    text-decoration: none;
    color: inherit;
    display: block;
}
.component-card:hover a {
    color: var(--bg);
}

.component-card h3 {
    font-size: 0.85rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.3rem;
    margin-top: 0;
}

.component-card p {
    font-size: 0.75rem;
    color: var(--fg);
    opacity: 0.55;
    margin: 0;
    line-height: 1.4;
}

.component-card:hover p {
    color: var(--bg);
    opacity: 0.75;
}

.page-footer {
    margin-top: 3rem;
    padding-top: 2rem;
}

.page-footer h2 {
    font-size: 1.3rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    border: none;
    padding: 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h3 {
    font-size: 0.75rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.6rem;
}

.footer-col a {
    display: block;
    font-size: 0.8rem;
    padding: 0.15rem 0;
    text-decoration: none;
    color: var(--fg);
}

.footer-col a:hover {
    background: var(--fg);
    color: var(--bg);
}
.footer-col p {
    font-size: 0.8rem;
    color: var(--muted);
    margin: 0;
}

.footer-code {
    background: var(--code-bg);
    color: var(--code-fg);
    padding: 0.5rem 0.8rem;
    border: var(--border);
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
}

.footer-code code {
    background: none;
    border: none;
    padding: 0;
    color: inherit;
}

.footer-license {
    font-size: 0.7rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding-top: 1rem;
    border-top: 1px solid var(--subtle);
}

.footer-license a {
    color: var(--muted);
    font-weight: 700;
}
.footer-license a:hover {
    color: var(--bg);
    background: var(--fg);
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition:
        opacity 0.5s ease,
        transform 0.5s ease;
}

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

#hamburger {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 20;
    background: var(--bg);
    color: var(--fg);
    border: var(--border);
    padding: 0.4rem 0.6rem;
    font-family: inherit;
    font-size: 1.2rem;
    cursor: pointer;
    font-weight: 900;
    line-height: 1;
}

#overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 5;
}

@media (max-width: 768px) {
    #hamburger {
        display: block;
    }
    #sidebar {
        transform: translateX(-100%);
        transition: transform 0.15s ease;
    }
    #sidebar.open {
        transform: translateX(0);
    }
    #overlay.open {
        display: block;
    }

    #content {
        margin-left: 0;
        width: 100%;
    }

    article {
        padding: 1.5rem 1rem;
        padding-top: 4rem;
        max-width: 100%;
        overflow-x: hidden;
    }

    article pre {
        max-width: calc(100vw - 2rem);
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .component-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .feature {
        grid-template-columns: 1fr;
    }
    .feature:nth-child(even) .feature-code {
        order: 1;
    }
    .feature:nth-child(even) .feature-text {
        order: 2;
    }
}