/* Modern Blog Redesign - Minimal, Funky & Professional */
/* CSS Custom Properties for consistent theming */
:root {
    /* Base colors — only these need changing to retheme */
    --color-primary: #7e6435;
    --color-secondary: #43582b;
    --color-primary-dark: #9bb39d;
    --color-secondary-dark: #b79c73;
    --color-background-dark: #1c1814;

    /* Base overlay colors */
    --color-light: rgb(223, 222, 222);
    --color-dark: black;

    /* Derived overlay colors */
    --color-on-gradient: var(--color-light);
    --color-on-gradient-soft: rgb(from var(--color-light) r g b / 0.95);
    --color-on-gradient-muted: rgb(from var(--color-light) r g b / 0.75);
    --toggle-bg: rgb(from var(--color-light) r g b / 0.9);
    --toggle-border-color: rgb(from var(--color-dark) r g b / 0.1);
    --toggle-bg-dark: rgb(from var(--color-dark) r g b / 0.7);
    --toggle-border-color-dark: rgb(from var(--color-light) r g b / 0.2);
    --color-print: var(--color-dark);

    /* Derived palette */
    --color-muted: oklch(from var(--color-secondary) calc(l + 0.17) calc(c + 0.02) h);
    --color-accent: oklch(from var(--color-secondary) calc(l + 0.19) calc(c + 0.065) h);
    --color-accent-hover: oklch(from var(--color-accent) calc(l - 0.07) c h);
    --color-background: oklch(from var(--color-primary) 0.97 0.008 h);
    --color-surface: oklch(from var(--color-primary) 1 0 h);
    --color-border: oklch(from var(--color-primary) 0.885 0.015 h);
    --color-code-bg: oklch(from var(--color-primary) 0.953 0.010 h);
    --color-gradient-start: oklch(from var(--color-primary) calc(l + 0.1) calc(c + 0.02) h);
    --color-gradient-end: oklch(from var(--color-primary) calc(l + 0.35) calc(c - 0.04) h);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Space Grotesk', var(--font-primary);
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Typography Scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;

    /* Layout */
    --max-width: 75rem;
    --content-width: 50rem;
    --border-radius: 0.5rem;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}


[data-theme="dark"] {
    --color-primary: var(--color-primary-dark);
    --color-secondary: var(--color-secondary-dark);
    --color-background: var(--color-background-dark);

    /* Derived */
    --color-muted: oklch(from var(--color-secondary) calc(l - 0.14) c h);
    --color-surface: oklch(from var(--color-background) calc(l + 0.05) c h);
    --color-border: oklch(from var(--color-background) calc(l + 0.12) c h);
    --color-code-bg: oklch(from var(--color-background) calc(l + 0.02) c h);
    --color-gradient-start: oklch(from var(--color-background) calc(l + 0.45) calc(c + 0.07) h);
    --color-gradient-end: oklch(from var(--color-background) calc(l + 0.15) calc(c + 0.05) h);
    --toggle-bg: var(--toggle-bg-dark);
    --toggle-border-color: var(--toggle-border-color-dark);
}

/* Header text overrides for both themes */
.header .article-meta .author,
.header .article-meta .publish-date {
    color: var(--color-on-gradient-muted) !important;
}

[data-theme="dark"] .header .article-meta .author,
[data-theme="dark"] .header .article-meta .publish-date {
    color: var(--color-on-gradient-muted) !important;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    line-height: 1.6;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-primary);
    background-color: var(--color-background);
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
    overflow-x: clip;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-lg);
}

h2 {
    font-size: var(--text-3xl);
}

h3 {
    font-size: var(--text-2xl);
}

h4 {
    font-size: var(--text-xl);
}

h5 {
    font-size: var(--text-lg);
}

h6 {
    font-size: var(--text-base);
}

p {
    margin-bottom: var(--space-lg);
    color: var(--color-secondary);
}

p:last-child {
    margin-bottom: 0;
}

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

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

a:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Tables */
table {
    width: 100%;
    max-width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-lg);
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

th {
    background-color: var(--color-code-bg);
    color: var(--color-secondary);
    font-weight: 600;
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 2px solid var(--color-border);
}

td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

/* Layout containers */
.content-wrap {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* Header — always uses the dark-mode brown gradient */
.header {
    padding: var(--space-2xl) 0 var(--space-xl);
    background: linear-gradient(135deg,
        oklch(from var(--color-background-dark) calc(l + 0.45) calc(c + 0.07) h),
        oklch(from var(--color-background-dark) calc(l + 0.15) calc(c + 0.05) h)
    );
    position: relative;
}

.header .content-wrap {
    position: relative;
    z-index: 1;
}

.header h1 {
    font-size: var(--text-5xl);
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--space-sm);
    color: var(--color-on-gradient);
    text-shadow: var(--shadow-header-text);
}

.header h1 a {
    color: var(--color-on-gradient);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.header h1 a:hover {
    opacity: 0.9;
    text-decoration: none;
}

.header .description {
    font-size: var(--text-lg);
    text-align: center;
    color: var(--color-on-gradient-soft);
    font-weight: 500;
    margin-top: var(--space-sm);
}

/* Desktop top bar: back + theme toggle grouped top-right — hidden on mobile */
.desktop-topbar {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.desktop-back {
    display: flex;
    align-items: center;
    color: var(--color-on-gradient-muted);
    text-decoration: none;
    line-height: 1;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.desktop-back svg {
    width: 20px;
    height: 20px;
}

.desktop-back:hover {
    color: var(--color-primary);
    background: rgb(from var(--color-accent) r g b / 0.1);
    text-decoration: none;
}

@media (max-width: 900px) {
    .desktop-topbar {
        display: none;
    }
}

/* Desktop theme toggle */
/* Simple theme toggle button */
.theme-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius);
    color: var(--color-primary);
    transition: color var(--transition-fast), background var(--transition-fast);
    line-height: 1;
    display: flex;
    align-items: center;
}

[data-theme="dark"] .theme-btn {
    color: var(--color-on-gradient-muted);
}

.theme-btn svg {
    width: 20px;
    height: 20px;
}

/* Light mode: show moon (click to go dark), hide sun */
.theme-btn .icon-sun { display: none; }
.theme-btn .icon-moon { display: block; }

/* Dark mode: show sun (click to go light), hide moon */
[data-theme="dark"] .theme-btn .icon-sun { display: block; }
[data-theme="dark"] .theme-btn .icon-moon { display: none; }

.theme-btn:hover {
    color: var(--color-primary);
    background: rgb(from var(--color-accent) r g b / 0.1);
}

/* Mobile hamburger — hidden on desktop */
.hamburger {
    display: none;
    position: fixed;
    top: var(--space-md);
    right: var(--space-md);
    z-index: 1100;
    background: rgb(0 0 0 / 0.2);
    border: none;
    border-radius: 10px;
    width: 48px;
    height: 48px;
    cursor: pointer;
    padding: var(--space-sm);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-on-gradient-muted);
    border-radius: 2px;
    transition: opacity var(--transition-fast);
}

.hamburger:hover span {
    opacity: 1;
}

/* Drawer overlay */
.drawer-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgb(0 0 0 / 0.4);
    z-index: 1200;
}

.drawer-overlay-visible {
    display: block;
}

/* Drawer panel */
.drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100%;
    background: var(--color-surface);
    border-left: 1px solid var(--color-border);
    z-index: 1300;
    transform: translateX(100%);
    transition: transform var(--transition-smooth);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.drawer-open {
    transform: translateX(0);
}

.drawer-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-md);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.drawer-home {
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
}

.drawer-home svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.drawer-home:hover {
    color: var(--color-accent);
    text-decoration: none;
}


.drawer-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-muted);
    font-size: var(--text-lg);
    padding: 0 var(--space-xs);
    line-height: 1;
    flex-shrink: 0;
}

.drawer-close:hover {
    color: var(--color-primary);
}

.drawer-body {
    padding: var(--space-md);
    flex: 1;
}

/* Article list in drawer (home/archive pages) */
.drawer-article-nav {
    padding: 0;
}

.drawer-nav-title {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.drawer-article-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.drawer-article-nav li {
    border-bottom: 1px solid var(--color-border);
}

.drawer-article-nav li:last-child {
    border-bottom: none;
}

.drawer-article-nav a {
    display: block;
    padding: var(--space-sm) 0;
    font-size: var(--text-sm);
    color: var(--color-secondary);
    text-decoration: none;
    line-height: 1.4;
}

.drawer-article-nav a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.drawer-nav-date {
    display: block;
    font-size: var(--text-xs);
    color: var(--color-muted);
    margin-top: 2px;
    padding-bottom: var(--space-xs);
}

/* In the drawer the TOC needs no border/shadow — just the list */
.drawer-body .toc {
    width: auto;
    position: static;
    max-height: none;
    border: none;
    background: none;
    padding: 0;
    box-shadow: none;
}

.drawer-body .toc::before {
    display: none;
}

@media (max-width: 900px) {

    .hamburger {
        display: flex;
    }
}


/* Main content */
#content {
    padding: var(--space-3xl) 0;
    margin: 0 var(--space-lg);
}

/* Index card two-column layout */
.card-layout {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
}

.card-main {
    flex: 1;
    min-width: 0;
}

.card-hero {
    flex-shrink: 0;
    width: 180px;
    display: block;
}

.card-hero img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: var(--border-radius);
    display: block;
}

@media (max-width: 600px) {
    .card-layout {
        flex-direction: column;
    }
    .card-hero {
        width: 100%;
    }
}

/* Article cards */
.article {
    background: var(--color-surface);
    border-radius: var(--border-radius);
    padding: var(--space-3xl) var(--space-3xl) var(--space-2xl);
    margin-bottom: var(--space-3xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.article::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end));
}

.article.intro {
    cursor: pointer;
    transition: transform var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.article.intro:hover {
    transform: translateY(-2px);
    background: rgb(from var(--color-accent) r g b / 0.05);
    box-shadow: 0 8px 24px rgb(0 0 0 / 0.15);
}

/* Stretched link — makes the whole card clickable via the h2 anchor */
.article.intro h2 a::after {
    content: '';
    position: absolute;
    inset: 0;
}

.article p.more {
    display: none;
}

.article header {
    margin-bottom: var(--space-lg);
}

.article header h2 {
    margin-bottom: var(--space-sm);
    font-size: var(--text-2xl);
}

.article header h2 a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.article header h2 a:hover {
    color: var(--color-accent);
}

/* Title with hero image layout */
.title-with-image {
    margin-bottom: var(--space-lg);
    border-radius: var(--border-radius);
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
}

.title-with-image h1,
.title-with-image h2 {
    margin-bottom: 0;
    flex: 1;
}

/* Hero image — floats right at 1/3 width, text wraps on the left */
.hero-image,
.hero-link {
    float: right;
    width: 33.333%;
    aspect-ratio: 1 / 1;
    display: block;
    margin: 0 0 var(--space-lg) var(--space-xl);
}

.hero-image {
    object-fit: cover;
    border-radius: var(--border-radius);
}

/* When the img is inside a link, the link is the float — reset the img */
.hero-link .hero-image {
    float: none;
    width: 100%;
    margin: 0;
    aspect-ratio: 1 / 1;
}

/* Clearfix so the container stretches to contain the float */
.has-hero::after {
    content: '';
    display: table;
    clear: both;
}

/* Mobile — full width, no float */
@media (max-width: 768px) {
    .hero-image,
    .hero-link {
        float: none;
        width: 100%;
        margin: 0 0 var(--space-lg) 0;
    }
}

/* Hide the markdown-embedded duplicate image (a paragraph whose only child is an img) */
.has-hero .content > p:first-of-type:has(> img:only-child) {
    display: none;
}

.article .date {
    font-size: var(--text-sm);
    color: var(--color-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0;
    white-space: nowrap;
    flex-shrink: 0;
}

.article .date span {
    font-size: var(--text-xs);
}

.article .content {
    color: var(--color-secondary);
    line-height: 1.8;
    padding: var(--space-xl) var(--space-lg) var(--space-lg);
}

.article .content img:not(.hero-image) {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: var(--space-lg) 0;
    box-shadow: var(--shadow-md);
}


.article .more {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    font-size: var(--text-sm);
    letter-spacing: 0.5px;
    margin-top: var(--space-lg);
    transition: all var(--transition-fast);
}

.article .more:hover {
    transform: translateX(4px);
}

.article .more::after {
    content: '→';
    font-size: var(--text-lg);
    transition: transform var(--transition-fast);
}

.article .more:hover::after {
    transform: translateX(2px);
}

/* Code styling */
code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    padding: 0.2em 0.4em;
    background: var(--color-code-bg);
    border-radius: 4px;
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    word-break: break-word;
}

pre {
    background: var(--color-code-bg);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    margin: var(--space-lg) 0;
    overflow-x: auto;
    border: 1px solid var(--color-border);
    position: relative;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent) var(--color-code-bg);
}

pre::-webkit-scrollbar {
    height: 8px;
}

pre::-webkit-scrollbar-track {
    background: var(--color-code-bg);
    border-radius: 4px;
}

pre::-webkit-scrollbar-thumb {
    background: var(--color-accent);
    border-radius: 4px;
}

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

pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: var(--text-sm);
    line-height: 1.6;
    white-space: pre;
    word-break: normal;
}

/* Shiki dual-theme: apply dark vars by default, light vars when data-theme="light" */
.astro-code,
.astro-code span {
    color: var(--shiki-dark) !important;
    background-color: var(--shiki-dark-bg) !important;
    font-style: var(--shiki-dark-font-style) !important;
    font-weight: var(--shiki-dark-font-weight) !important;
    text-decoration: var(--shiki-dark-text-decoration) !important;
}

[data-theme="light"] .astro-code,
[data-theme="light"] .astro-code span {
    color: var(--shiki-light) !important;
    background-color: var(--shiki-light-bg) !important;
    font-style: var(--shiki-light-font-style) !important;
    font-weight: var(--shiki-light-font-weight) !important;
    text-decoration: var(--shiki-light-text-decoration) !important;
}

/* Lists */
ul,
ol {
    margin-left: var(--space-xl);
    margin-bottom: var(--space-lg);
}

li {
    margin-bottom: var(--space-sm);
    color: var(--color-secondary);
}

/* Blockquotes */
blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0;
    font-style: italic;
    color: var(--color-muted);
    background: linear-gradient(135deg, var(--color-code-bg), transparent);
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* Horizontal rules */
hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    margin: var(--space-2xl) 0;
    opacity: 0.3;
}

/* Footer */
footer {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-2xl) 0;
    margin-top: var(--space-3xl);
}

footer .nav {
    text-align: center;
    margin-bottom: var(--space-xl);
}

footer .nav a {
    display: inline-block;
    padding: var(--space-sm) var(--space-md);
    margin: 0 var(--space-sm);
    background: var(--color-background);
    color: var(--color-accent);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
}

footer .nav a:hover {
    background: rgb(from var(--color-accent-hover) r g b / 0.1);
    transform: translateY(-1px);
}

footer .about {
    font-size: var(--text-sm);
    color: var(--color-muted);
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

footer .copy {
    text-align: center;
    font-size: var(--text-xs);
    color: var(--color-muted);
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

/* Article detail styles */
body.article-detail .header {
    padding: var(--space-2xl) 0;
}

body.article-detail .header h1 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-lg);
}

body.article-detail .article {
    box-shadow: none;
    border: none;
    padding: 0;
}

body.article-detail .article::before {
    display: none;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-lg);
    align-items: center;
    margin-bottom: var(--space-2xl);
    padding-top: var(--space-md);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.article-meta .author {
    font-size: var(--text-base);
    color: var(--color-secondary);
    margin: 0;
    font-weight: 500;
}

.article-meta .publish-date {
    font-size: var(--text-base);
    color: var(--color-secondary);
    margin: 0;
    font-weight: 500;
}

.tags {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.tag {
    background: var(--color-background);
    color: var(--color-accent);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 9999px;
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.header .tag {
    background: var(--color-background-dark);
    color: var(--color-secondary-dark);
}

/* Archive page */
.archive {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-md);
}

.archive h2 {
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.archive-year {
    margin-bottom: var(--space-2xl);
}

.archive-year-label {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-border);
}

.archive-month {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-lg);
}

.archive-month-label {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-muted);
    margin-bottom: var(--space-sm);
}

.archive-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.archive-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    margin-bottom: 2px;
    border-radius: var(--border-radius);
    transition: background var(--transition-fast);
}

.archive-item:hover {
    background: rgb(from var(--color-accent) r g b / 0.06);
}

.archive-date {
    font-size: var(--text-xs);
    color: var(--color-muted);
    font-weight: 500;
    white-space: nowrap;
    min-width: 3.5rem;
}

.archive-item a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.archive-item a:hover {
    color: var(--color-accent);
    text-decoration: none;
}

/* Responsive design */
@media (max-width: 768px) {
    :root {
        --text-4xl: 2rem;
        --text-3xl: 1.5rem;
        --text-2xl: 1.25rem;
        --space-3xl: 2rem;
        --space-2xl: 1.5rem;
    }

    .content-wrap {
        padding: 0 var(--space-lg);
    }

    #content {
        margin: 0 var(--space-md);
    }

    .header {
        padding: var(--space-2xl) 0;
    }

    .header h1 {
        font-size: var(--text-3xl);
    }

    .article {
        padding: var(--space-lg);
        background: transparent;
        border: none;
        box-shadow: none;
    }

    .article .content {
        padding: 0;
    }

    /* Mobile code block improvements */
    pre {
        padding: var(--space-md);
        margin: var(--space-md) 0;
        font-size: 14px;
    }

    pre code {
        font-size: 13px;
        line-height: 1.4;
    }

    code {
        font-size: 0.85em;
        padding: 0.15em 0.3em;
    }

    /* Remove all borders and shadows on mobile */
    .article {
        border: none;
        box-shadow: none;
        margin: 0;
    }

    .title-with-image {
        border: none;
        box-shadow: none;
    }
}

@media (max-width: 480px) {
    .archive li {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    footer .nav a {
        display: block;
        margin: var(--space-xs) 0;
    }

    /* Extra small screen code improvements */
    pre {
        padding: var(--space-sm);
        margin: var(--space-sm) 0;
        border-radius: 4px;
        font-size: 13px;
    }

    pre code {
        font-size: 12px;
        line-height: 1.3;
    }

    code {
        font-size: 0.8em;
    }

    .article .content {
        padding: 0;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Code highlighting theme integration */
pre {
    background-color: var(--color-code-bg) !important;
    border: 1px solid var(--color-border);
    color: var(--color-primary);
    overflow-x: auto;
}

pre code {
    background-color: transparent !important;
    color: inherit;
}

code.hljs {
    background-color: transparent !important;
}

/* Override highlight.js background colors */
.hljs {
    background: transparent !important;
    color: var(--color-primary) !important;
}

/* Syntax colors using theme variables */
.hljs-string {
    color: var(--color-accent) !important;
}

.hljs-number {
    color: var(--color-secondary) !important;
}

.hljs-literal {
    color: var(--color-secondary) !important;
}

.hljs-attr {
    color: var(--color-accent) !important;
}

.hljs-variable {
    color: var(--color-primary) !important;
}

.hljs-function {
    color: var(--color-muted) !important;
}

.hljs-class {
    color: var(--color-muted) !important;
}

.hljs-title {
    color: var(--color-accent) !important;
}

.hljs-keyword {
    color: var(--color-accent) !important;
}

.hljs-tag {
    color: var(--color-accent) !important;
}

.hljs-name {
    color: var(--color-accent) !important;
}

.hljs-comment {
    color: var(--color-muted) !important;
    opacity: 0.7;
}

.hljs-quote {
    color: var(--color-muted) !important;
}

/* ── Table of contents ─────────────────────────────────────────────────────── */

/* Two-column layout on article pages */
.article-with-toc {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2xl);
}

.toc {
    width: 220px;
    flex-shrink: 0;
    position: sticky;
    top: var(--space-2xl);
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--space-md);
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
}

.toc::before {
    content: '';
    display: block;
    height: 3px;
    margin: calc(-1 * var(--space-md)) calc(-1 * var(--space-md)) var(--space-md);
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    background: linear-gradient(90deg, var(--color-gradient-start), var(--color-gradient-end));
}

.toc-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    background: none;
    border: none;
    padding: 0;
    margin-bottom: var(--space-sm);
    cursor: default;
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-primary);
}

.toc-chevron {
    font-size: 0.6em;
    opacity: 0.5;
    display: none; /* hidden on desktop */
}

.toc-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toc-item {
    margin: 0;
}

.toc-link {
    display: block;
    padding: 0.3rem var(--space-sm);
    font-size: var(--text-sm);
    color: var(--color-muted);
    text-decoration: none;
    border-left: 2px solid transparent;
    border-radius: 0 4px 4px 0;
    line-height: 1.4;
    transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.toc-link:hover {
    color: var(--color-accent);
    background: rgb(from var(--color-accent) r g b / 0.06);
    text-decoration: none;
    border-left-color: var(--color-border);
}

.toc-link.toc-active {
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    background: rgb(from var(--color-accent) r g b / 0.08);
    font-weight: 500;
}

/* h3 entries indented */
.toc-h3 .toc-link {
    padding-left: calc(var(--space-sm) + var(--space-md));
    font-size: var(--text-xs);
}

/* Mobile — revert sidebar to normal block layout (TOC is in the drawer) */
@media (max-width: 900px) {
    .article-with-toc {
        display: block;
        padding: 0;
        margin: 0;
    }

    .toc {
        display: none;
    }

    .drawer-body .toc {
        display: block;
    }

    /* Index cards: stack date below title on mobile */
    .title-with-image {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .title-with-image .date {
        font-size: var(--text-xs);
        opacity: 0.6;
    }
}

/* Landscape mobile — reduce header padding */
@media (max-height: 500px) and (orientation: landscape) {
    .header {
        padding: var(--space-md) 0;
    }

    body.article-detail .header {
        padding: var(--space-md) 0;
    }
}

/* Print styles */
@media print {
    .header {
        background: none !important;
        color: var(--color-print) !important;
    }

    .article {
        box-shadow: none;
        border: 1px solid var(--color-border);
    }

    a {
        color: var(--color-print) !important;
    }
}