:root {
    --text-color: rgba(0, 0, 0, 0.95);
    --bg-color: #ffffff;
    --link-color: #3b5998;
    --hover-color: #8b9dc3;
    --meta-color: #666666;
    --border-color: #dddddd;
    --max-width: 46rem;
    --side-width: 16rem;
    --side-margin: 18rem;
}

@media (prefers-color-scheme: dark) {
    :root {
        --text-color: #dddddd;
        --bg-color: #1a1a1a;
        --link-color: #80b0e0;
        --hover-color: #a0c0e0;
        --meta-color: #999999;
        --border-color: #333333;
    }
}

body {
    font-family: "Charter", "Bitstream Charter", "PT Serif", Georgia, serif;
    font-size: 18px;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    color: var(--text-color);
    background: var(--bg-color);
    margin: 0;
    padding: 0;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--side-margin) 0 2rem;
}

nav {
    margin: 2rem 0;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

nav a {
    margin-right: 1.5rem;
    color: var(--text-color);
    text-decoration: none;
}

nav a:hover {
    text-decoration: underline;
}

article {
    margin: 2rem 0;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

h1 {
    font-size: 2.0em;
}

h2 {
    font-size: 1.6em;
}

h3 {
    font-size: 1.2em;
}

a {
    color: var(--link-color);
    text-decoration: none;
    border-bottom: 1px solid rgba(59, 89, 152, 0.2);
}

a:hover {
    color: var(--hover-color);
    border-bottom-color: var(--hover-color);
}

.toc {
    position: fixed;
    right: 1rem;
    top: 4rem;
    width: var(--side-width);
    max-height: 80vh;
    overflow-y: auto;
    padding: 1rem;
    border-left: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.metadata {
    margin: 2rem 0;
    font-size: 0.9rem;
    color: var(--meta-color);
}

.tag {
    display: inline-block;
    margin: 0.2rem;
    padding: 0.2rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 3px;
}

@media (max-width: 1200px) {
    .toc {
        position: static;
        width: auto;
        border-left: none;
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
        margin: 2rem 0;
    }
}

/* Add support for sidenotes */
.sidenote {
    float: right;
    clear: right;
    margin-right: calc(-1 * var(--side-margin));
    width: calc(var(--side-margin) - 4rem);
    margin-top: 0;
    font-size: 0.85rem;
    line-height: 1.4;
    vertical-align: baseline;
    position: relative;
    color: rgba(0, 0, 0, 0.65);
    background: rgba(0, 0, 0, 0.03);
    padding: 0.8rem;
    border-radius: 3px;
}

@media (max-width: 1200px) {
    .container {
        padding: 0 1rem;
    }

    .sidenote {
        float: none;
        margin: 1rem 0;
        width: auto;
        background: rgba(0, 0, 0, 0.05);
        padding: 1rem;
        border-left: 3px solid var(--border-color);
    }
}

/* Make TOC links more subtle */
.toc a {
    color: var(--meta-color);
    text-decoration: none;
}

.toc a:hover {
    text-decoration: underline;
}

/* Math formatting */
.katex {
    font-size: 1.1em;
}

.katex-display {
    margin: 1.5rem 0;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 0.5rem 0;
}

/* Improve readability */
p {
    margin-bottom: 1.5rem;
    text-align: left;
    hyphens: auto;
    -webkit-hyphens: auto;
    -moz-hyphens: auto;
}

/* Better code block styling */
pre {
    background: rgba(0, 0, 0, 0.03);
    padding: 1rem;
    border-left: 3px solid var(--border-color);
    overflow-x: auto;
    position: relative;
    font-size: 0.8em;
}

/* Dark mode adjustments */
@media (prefers-color-scheme: dark) {
    pre {
        background: rgba(255, 255, 255, 0.05);
    }

    /* Add dark mode styling for line numbers */
    pre table td:nth-of-type(1) {
        background: rgba(255, 255, 255, 0.05);
        color: var(--meta-color);
    }

    /* Ensure code background stays dark in tables */
    pre table {
        background: transparent;
        box-shadow: none;
        margin: 0;
    }

    /* Fix highlight color for dark mode */
    pre mark {
        background-color: rgba(254, 252, 232, 0.1);
    }
}

/* Update table styling within pre blocks */
pre table td {
    padding: 0;
    border: none;
}

/* Style line number cells */
pre table td:nth-of-type(1) {
    text-align: center;
    user-select: none;
    background: rgba(0, 0, 0, 0.03);
    color: var(--meta-color);
    padding: 0 0.5rem;
}

/* Reset table styles within pre blocks */
pre table {
    width: 100%;
    border-collapse: collapse;
    margin: 0;
    background: transparent;
    box-shadow: none;
}

/* Adjust highlight styling */
pre mark {
    display: block;
    background-color: rgba(254, 252, 232, 0.9);
}

/* Improve blockquote styling */
blockquote {
    margin: 1.5rem 0;
    padding: 0.5rem 1.5rem;
    border-left: 3px solid var(--border-color);
    font-style: italic;
    color: rgba(0, 0, 0, 0.7);
    background: rgba(0, 0, 0, 0.03);
}

.copy-button {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    background: var(--bg-color);
    border: 1px solid var(--meta-color);
    color: var(--meta-color);
    border-radius: 3px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s;
}

pre:hover .copy-button {
    opacity: 1;
}

/* Mermaid diagrams */
.mermaid {
    text-align: center;
    margin: 2rem 0;
}

/* Figure captions */
figure {
    margin: 2rem 0;
    text-align: center;
}

figcaption {
    font-size: 0.9rem;
    color: var(--meta-color);
    margin-top: 0.5rem;
}

/* Footnotes */
.footnote-definition {
    margin: 1.5rem 0;
    font-size: 0.9rem;
    color: var(--meta-color);
    display: flex;
    gap: 0.5rem;
}

.footnote-definition sup {
    margin-right: 0;
}

/* Table styling */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.9rem;
    background: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

th,
td {
    padding: 0.8rem;
    border: 1px solid var(--border-color);
}

th {
    background: rgba(0, 0, 0, 0.04);
    font-weight: 600;
}

@media (prefers-color-scheme: dark) {
    th {
        background: rgba(255, 255, 255, 0.05);
    }
}

.toc ul {
    list-style: none;
    padding-left: 0.8em;
    margin: 0.4rem 0;
}

.toc>ul {
    padding-left: 0;
}

/* Heading styles */
h1, h2 {
    border-bottom: 1px solid var(--border-color);
}

/* Heading sizes */
h1 {
    font-size: 2.0em;
}

h2 {
    font-size: 1.6em;
}

h3 {
        font-size: 1.2em;
}

/* Heading spacing */
h1, h2, h3, h4, h5, h6 {
    margin-top: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}