:root {
    --body-font: "Merriweather", Georgia, "Times New Roman", serif;
    --heading-font:
        "Happy", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
        Roboto, "Helvetica Neue", Arial, sans-serif;
    --mono-font:
        "JetBrainsMono", Menlo, Monaco, Consolas, "Liberation Mono",
        "Courier New", monospace;

    /* Core colors (semantic) */
    --text-color: #2d2d2d;
    --background: #fff;
    --heading-color: #242424;
    --accent-color: #fc218a;
    --surface-color: #fafafa;
    --border-color: #ddd;
    --meta-color: rgba(45, 45, 45, 0.6);

    /* Dark mode */
    --dark-bg: #282934;
    --dark-surface: rgba(255, 255, 255, 0.08);
    --dark-border: rgba(255, 255, 255, 0.2);

    --base-font-size: calc(1em + 0.32vw);
    --line-height: 1.75;

    /* Layout */
    --max-width: 34em;
    --spacing: 20px;
    --radius: 10px;
    --transition: 150ms;
}

/* Dark theme variables */
[data-theme="dark"] {
    --text-color: #e1e1e1;
    --background: var(--dark-bg);
    --heading-color: #fff;
    --meta-color: rgba(255, 255, 255, 0.4);
    --surface-color: var(--dark-surface);
    --border-color: var(--dark-border);
}

/* Support system preference as default if no theme is explicitly set */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --text-color: #e1e1e1;
        --background: var(--dark-bg);
        --heading-color: #fff;
        --meta-color: rgba(255, 255, 255, 0.4);
        --surface-color: var(--dark-surface);
        --border-color: var(--dark-border);
    }

    :root:not([data-theme="light"]) :not(pre) > code {
        color: var(--text-color);
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid var(--border-color);
        box-shadow: none;
    }

    :root:not([data-theme="light"]) .invert,
    :root:not([data-theme="light"]) .icon {
        filter: invert(1);
    }

    :root:not([data-theme="light"]) .logo_font_light {
        display: none;
    }

    :root:not([data-theme="light"]) .logo_font_dark {
        display: block;
    }
}

/* Light mode logo display */
@media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) .logo_font_dark {
        display: none;
    }

    :root:not([data-theme="dark"]) .logo_font_light {
        display: block;
    }
}

/* Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote {
    margin: 0;
    padding: 0;
}

/* Base styles */
html {
    font-size: 100%;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--body-font);
    font-weight: 400;
    font-size: var(--base-font-size);
    line-height: var(--line-height);
    color: var(--text-color);
    background: var(--background);
    hyphens: none;
    overflow-wrap: break-word;
    font-variant-ligatures: common-ligatures;
    font-feature-settings: "kern", "liga", "clig", "calt";
    letter-spacing: 0.01em;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

p {
    margin-bottom: 1.6em;
}

::selection {
    background: var(--accent-color);
    color: #fff;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--heading-font);
    font-weight: 400;
    color: var(--heading-color);
    margin-bottom: 0.8em;
}

h1 {
    font-size: 2em;
    line-height: 1.2;
}

h2 {
    font-size: 1.5em;
    margin-top: 70px;
    line-height: 1.3;
}

h3 {
    font-size: 1.2em;
    margin-top: 40px;
}

article h1,
article h2 {
    text-transform: capitalize;
}

/* Links */
a {
    color: var(--accent-color);
    text-decoration-color: var(--accent-color);
    text-decoration-thickness: 2px;
    text-underline-offset: 0.2em;
    text-decoration-skip-ink: auto;
    text-decoration-style: dotted;
}

a:hover {
    text-decoration-style: solid;
}

/* Dark mode: white text with accent underline for maximum readability */
[data-theme="dark"] a {
    color: #fff;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) a {
        color: #fff;
    }
}

/* Header styling */
header {
    width: 100%;
    z-index: 1000;
    top: 0;
    left: 0;
    overflow: hidden;
    background-color: var(--background);
}

.homepage-header {
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    position: relative;
    padding: 70px 0 100px;
    display: flex;
    gap: 20px;
    justify-content: center;
    font-size: 0.9em;
}

.site-header {
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    position: relative;
    padding: 70px 0 0;
    display: flex;
    gap: 20px;
    justify-content: center;
}

.homepage-header a,
.site-header a {
    text-decoration: none;
}

.homepage-title {
    font-size: 1.8em;
}

/* Logo in header */
.logo {
    width: 50px;
    height: 50px;
}

.homepage-header .logo {
    width: 80px;
    height: 80px;
}

header h1,
header h2 {
    margin: 0;
    padding: 0;
}

header h1 {
    font-family: "Happy-Headline";
    font-size: 1.2em;
}

header h2 {
    font-size: 1.2em;
    color: var(--heading-color);
}

article h1 {
    font-family: "Happy-Headline";
    color: var(--accent-color);
}

/* Main content */
main {
    margin: 0 auto 4rem;
    max-width: var(--max-width);
    position: relative;
    z-index: 1;
}

main article {
    margin-bottom: 70px;
    overflow-wrap: anywhere;
}

/* Article styles */
.article-header {
    text-align: center;
    padding: 20px 0 1.5rem;
    margin: 0 auto 4em;
    position: relative;
}

.article-header h1 {
    font-size: 2.4em;
    line-height: 1.2;
    max-width: 90%;
    margin: 0 auto;
}

.article-header .subtitle {
    font-size: 1.25rem;
    font-weight: normal;
    margin: 0.75rem auto 1.5rem;
    max-width: 80%;
    color: var(--meta-color);
}

.article-content {
    margin: 0 auto;
}

.post-meta {
    font-size: 1rem;
    color: var(--meta-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.homepage .post-meta {
    font-size: 0.8rem;
}

/* Theme toggle button */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.4em;
    border-radius: 2em;
    cursor: pointer;
    min-width: 1em;
    min-height: 1em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    opacity: 0.8;
    transition: all 0.3s ease;
    margin-left: 10px;
    vertical-align: middle;
}

.theme-toggle:hover {
    opacity: 1;
    border-color: var(--accent-color);
}

.theme-toggle svg {
    width: 1.2em;
    height: 1.2em;
    stroke: currentColor;
    fill: none;
}

.theme-toggle .sun-icon {
    display: block;
}

.theme-toggle .moon-icon {
    display: none;
}

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

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

/* Media elements */
img,
video,
iframe {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    display: block;
    margin: 0 auto;
}

/* Make images and media 20% wider than text in articles */
article img,
article video,
article iframe,
article figure {
    width: 120%;
    max-width: 120%;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
}

figure {
    font-size: 0.9em;
    font-style: italic;
    margin: 40px 0;
}

figure img {
    width: 100%;
}

figcaption {
    margin-top: 10px;
    text-align: center;
    color: var(--meta-color);
    font-size: 0.7em;
}

/* Figure captions should remain centered within wider figures */
article figcaption {
    margin-left: 10%;
    margin-right: 10%;
    width: calc(100% - 20%);
}

/* Code blocks */
pre,
code,
kbd,
samp {
    font-variant-ligatures: none;
    font-feature-settings: normal;
    font-family: var(--mono-font);
}

pre {
    display: block;
    border-radius: var(--radius);
    padding: var(--spacing);
    margin: 30px 0;
    background: var(--surface-color);
    overflow-x: auto;
}

/* Make code blocks 20% wider than text in articles */
article pre {
    width: 120%;
    max-width: 120%;
    margin-left: -10%;
    margin-right: -10%;
    box-sizing: border-box;
}

code {
    padding: 2px 4px;
    font-size: 0.9em;
}

pre > code {
    display: block;
    padding: 0;
}

:not(pre) > code {
    color: var(--text-color);
    background: rgba(0, 0, 0, 0.08);
    border-radius: 4px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.125);
}

[data-theme="dark"] :not(pre) > code {
    color: var(--text-color);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    box-shadow: none;
}

/* Blockquotes */
blockquote {
    border-left: 4px solid var(--accent-color);
    font-style: italic;
    margin: 30px 0;
    padding: 10px 20px;
    border-radius: 0 var(--radius) var(--radius) 0;
}

blockquote > *:last-child {
    margin-bottom: 0;
}

blockquote > *:first-child {
    margin-top: 0;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: space-between;
    margin: 40px 0;
    font-size: 0.9em;
}

.pagination a {
    display: inline-block;
    padding: 10px 16px;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    text-decoration: none;
    background: var(--surface-color);
}

.pagination a:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
}

/* Info blocks and details */
.info,
details {
    padding: 20px;
    margin: 30px 0;
    background: rgba(0, 0, 0, 0.04);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
}

.info {
    margin: 40px 0 20px;
    border-style: dotted;
}

.info > *:first-child,
.info > *:last-child {
    margin-top: 0;
    margin-bottom: 0;
}

details summary {
    width: 100%;
    margin: -20px;
    padding: 20px;
    cursor: pointer;
}

[data-theme="dark"] .info,
[data-theme="dark"] details {
    background: var(--dark-surface);
    border-color: var(--border-color);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th,
td {
    border-bottom: 1px solid var(--border-color);
    padding: 8px 4px;
    text-align: left;
}

th {
    font-weight: 600;
}

/* Homepage styles */
.homepage h1 {
    font-size: 1.5em;
    margin-bottom: 0.5em;
}

.homepage a.title {
    text-decoration: none;
}

.homepage a.title:hover {
    text-decoration: underline dotted;
    text-decoration-thickness: 3px;
    text-underline-offset: 4px;
    text-decoration-color: var(--accent-color);
}

.excerpt {
    margin: 10px 0;
}

.excerpt a {
    color: var(--text-color);
    text-decoration-color: var(--text-color);
}

/* Post links and social */
.post-links {
    list-style: none;
    padding: 0;
    margin-top: 40px;
}

.comments {
    list-style: none;
    display: inline;
}

/* Footer */
footer {
    display: flex;
    justify-content: center;
    margin-top: 60px;
    background: var(--surface-color);
    color: var(--text-color);
    transition: background-color 0.3s ease;
    font-size: 0.9em;
}

footer .body {
    max-width: 550px;
    margin: 40px auto;
    padding: 20px;
}

.footer-author {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
}

.footer-author-photo {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid white;
    margin-right: 0.75rem;
    flex-shrink: 0;
}

.footer-author-text {
    font-size: 1.6rem;
}

.footer-author-text a {
    color: var(--accent-color);
}

.footer-author-text a:hover {
    color: var(--accent-color);
    text-decoration: underline dotted;
    text-decoration-thickness: 2px;
    text-decoration-color: var(--text-color);
}

.footnotes {
    border-top: 1px dotted var(--border-color);
    font-size: 0.8em;
    background-color: transparent;
}

/* Icons and anchors */
.icon {
    height: 24px;
    width: 24px;
    opacity: 0.4;
    float: left;
    margin: 5px;
    background-repeat: no-repeat;
    transition: opacity var(--transition) ease-in;
}

.icon:hover {
    opacity: 1;
}

.anchor {
    float: left;
    margin-left: -33px;
    margin-top: 3px;
    fill: var(--meta-color);
    opacity: 0.4;
}

.anchor:hover {
    fill: var(--accent-color);
    opacity: 1;
}

/* Social icons */
.social-icons ul {
    display: inline-block;
    padding-left: 0;
}

.social-icons li {
    list-style: none;
    display: inline;
}

/* Dark mode styles */
[data-theme="dark"] .invert,
[data-theme="dark"] .icon {
    filter: invert(1);
}

[data-theme="dark"] .logo_font_light {
    display: none;
}

[data-theme="dark"] .logo_font_dark {
    display: block;
}

/* Mobile styles */
@media (max-width: 920px) {
    .container {
        margin: 0 auto;
        flex-direction: column;
        align-items: center;
        padding: 0 8px;
    }

    header {
        position: relative;
    }

    .site-header {
        position: static;
        padding: 20px 0;
        transform: none !important;
    }

    .header-title {
        display: none;
    }

    main {
        padding-top: 0;
    }

    .article-header {
        padding-bottom: 1.5rem;
        margin: 1em auto 2em;
        position: relative;
    }

    .post-meta {
        display: none;
    }

    /* Reduce wider effect on mobile */
    article img,
    article video,
    article iframe,
    article pre,
    article figure {
        width: 110%;
        max-width: 110%;
        position: relative;
        left: 50%;
        transform: translateX(-50%);
    }

    article figcaption {
        margin-left: 5%;
        margin-right: 5%;
        width: calc(100% - 10%);
    }

    pre {
        padding: 16px;
        margin: 20px 0px;
    }

    blockquote {
        padding: 10px 15px;
    }

    .footer-author-photo {
        width: 40px;
        height: 40px;
        margin-right: 0.5rem;
    }

    .footer-author-text {
        font-size: 1.4rem;
    }
}

@media (max-width: 480px) {
    .homepage-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
        padding: 40px 20px;
    }

    .theme-toggle {
        margin-left: 0;
        margin-top: 10px;
    }

    /* Back to normal width on very small screens */
    article img,
    article video,
    article iframe,
    article pre,
    article figure {
        width: 100%;
        max-width: 100%;
        margin: 0 auto;
    }

    article figcaption {
        margin-left: 0;
        margin-right: 0;
        width: 100%;
    }
}