html {
    box-sizing: border-box;
}

*, ::before, ::after {
    box-sizing: inherit;
}

:root {
    --bg: #ffffff;
    --bg-shift: #fdfdfd;
    --code-bg: #ebebeb;
    --text: #1a1a1a;
    --text-muted: #666666;
    --border: #dcdcdc;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2rem;
    --max-width: 780px;
    --font-body: system-ui, sans-serif;
    --font-mono: ui-monospace, monospace;
    --font-size: 1rem;
    --font-size-sm: 0.85rem;
    --line-height: 1.6;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1a1a1a;
        --bg-shift: #222222;
        --text: #e0e0e0;
        --text-muted: #aaaaaa;
        --border: #333333;
        --accent: #3b82f6;
        --accent-hover: #60a5fa;
    }
}

html.dark {
    --bg: #1a1a1a;
    --bg-shift: #222222;
    --code-bg: #3b3b3b;
    --text: #e0e0e0;
    --text-muted: #aaaaaa;
    --border: #333333;
}

html.light {
    --bg: #ffffff;
    --bg-shift: #fdfdfd;
    --text: #1a1a1a;
    --text-muted: #666666;
    --border: #dcdcdc;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
}

a,
body,
code,
footer,
main,
nav,
nav a,
pre,
.date,
.links.open,
.nav-toggle span,
.nav-toggle span::after,
.nav-toggle span::before,
.preview,
.preview:nth-child(even),
.tags,
.title a {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: var(--font-size);
    line-height: var(--line-height);
    margin: 0;
}

.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: var(--max-width);
    margin-inline: auto;
    padding: var(--space-3);
}

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

button {
    border: none;
    background: none;
    cursor: pointer;
}

nav {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    justify-content: flex-start;
    padding-block: var(--space-3);
    border-bottom: 1px solid var(--border);
    position: relative;
}

nav ul {
    padding-left: 0;
    list-style-type: none;
    margin: 0;
}

nav a {
    color: var(--text-muted);
}

nav a:hover {
    color: var(--text);
}

.nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    width: 44px;
    padding: var(--space-2) 0 var(--space-2) 0;
    margin: 0;
    margin-left: auto;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text);
    position: relative;
}

.nav-toggle span::before, .nav-toggle span::after {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text);
    content: "";
    position: absolute;
    left: 0;
}

.nav-toggle span::before {
    top: -8px;
}

.nav-toggle span::after {
    top: 8px;
}

.feed {
    display: flex;
}

.links {
    display: none;
    margin-left: auto;
}

.links.open {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-2);
    width: 100%;
    position: absolute;
    top: 100%;
    right: 0;
    width: 30%;
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: 0px 0px 0px 10px;
    z-index: 1;
    gap: var(--space-2);
}

.links a {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

@media (min-width: 680px) {
    .nav-toggle {
        display: none;
    }

    .links {
        display: flex;
        flex-direction: row;
        gap: var(--space-3);
    }

    .links.open {
        flex-direction: row;
        width: auto;
        position: static;
        background-color: none;
        border: none;
        gap: var(--space-3);
    }
}

.title a {
    color: var(--text);
    font-family: ui-monospace, monospace;
    letter-spacing: 0.1em;
    font-weight: bold;
    font-size: var(--font-size-sm);
    text-decoration: none;
    text-transform: lowercase;
}

/* .title a::before { */
/*     content: "> "; */
/* } */

main {
    flex-grow: 1;
}

main h1 {
    margin: 0;
    padding-top: var(--space-4);
    padding-bottom: var(--space-2);
}

.preview {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding-block: var(--space-3);
}

.preview:nth-child(even) {
    background-color: var(--bg-shift);
}

.preview h2 {
    margin: 0;
}

.date {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: var(--space-3);
}

footer {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    border-top: 1px solid var(--border);
    padding-block: var(--space-3);
    font-size: var(--font-size-sm);
}

.theme-toggle {
    width: 48px;
    height: 26px;
    background-color: var(--border);
    border-radius: 13px;
    color: var(--text-muted);
    position: relative;
}

.theme-toggle::after {
    content: "";
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg);
    position: absolute;
    width: 22px;
    height: 22px;
    border: 1px solid var(--text);
    border-radius: 50%;
    background-color: var(--text);
    left: 2px;
    top: 2px;
    transition: transform 0.2s ease;
}

html.light .theme-toggle::after {
    transform: translateX(22px);
}

.byline {
    font-weight: bold;
    margin: 0;
}

.tags {
    display: flex;
    color: var(--text-muted);
    gap: var(--space-2);
    font-size: 0.9em;
    padding-block: var(--space-2);
}

code {
    background-color: var(--code-bg);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: var(--space-1) var(--space-2) var(--space-1) var(--space-2);
}

pre {
    background-color: var(--code-bg);
    border-radius: 8px;
    padding: var(--space-3);
    overflow-x: auto;
}

pre code {
    padding: 0;
    font-size: 1em;
    background-color: none;
}

.post :is(img, iframe) {
    display: block;
    max-width: 100%;
    margin: 1.5rem auto;
}

.post img {
    height: auto;
}

.post iframe {
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
    border: 0;
}