/* ====================================
   BLOGO - BRUTALIST BLOG ARCHITECTURE
   Modern, minimal, semantic CSS
   ==================================== */

/* ====================================
   DESIGN SYSTEM FOUNDATION
   ==================================== */
:root {
  /* === COLOR ARCHITECTURE - OPTIMIZED FOR READABILITY === */
  /* Background: Warm off-white reduces eye strain vs pure white */
  --color-bg: #fefdf8;
  --color-surface: #f3f5f9;

  /* Text: High contrast (16:1) for optimal readability */
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #3a3a3a;
  --color-text-muted: #6a6a6a;

  /* Accent: Purple-blue with sufficient contrast (4.5:1 minimum) */
  --color-accent: #5b4fc6;
  --color-accent-hover: #453aa3;
  --color-accent-subtle: #e8e5f7;

  /* Borders: Subtle hierarchy */
  --color-border-light: #e8e6df;
  --color-border: #d4d2c8;
  --color-border-strong: #2a2a2a;

  /* Semantic colors for better UX */
  --color-link: #5b4fc6;
  --color-link-visited: #7b6fd6;
  --color-code-bg: #10131b;
  --color-code-inline-bg: #d7c2c2;
  --color-code-border: rgba(12, 18, 28, 0.85);
  --color-code-shadow: 0 24px 45px -18px rgba(7, 10, 18, 0.55);

  /* Code syntax highlighting colors - vibrant for dark canvas */
  --code-keyword: #f7768e; /* Bright pink for keywords */
  --code-string: #9ece6a; /* Vivid green for strings */
  --code-function: #7aa2f7; /* Electric blue for function names */
  --code-comment: #7b82a3; /* Muted slate for comments */
  --code-number: #ff9e64; /* Warm orange for numbers */
  --code-property: #c0caf5; /* Soft blue for properties */
  --code-operator: #89ddff; /* Cyan for operators */
  --code-variable: #e3ecff; /* Pale blue-white for variables */

  /* === FLUID TYPOGRAPHY === */
  --font-size-xs: clamp(0.65rem, 0.6rem + 0.2vw, 0.75rem);
  --font-size-sm: clamp(0.75rem, 0.7rem + 0.2vw, 0.85rem);
  --font-size-base: clamp(0.8rem, 0.75rem + 0.2vw, 0.9rem);
  --font-size-lg: clamp(0.95rem, 0.9rem + 0.3vw, 1.1rem);
  --font-size-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.6rem);
  --font-size-2xl: clamp(1.6rem, 1.3rem + 1.5vw, 2.4rem);

  /* === SPACING SCALE === */
  --space-xs: 0.5rem; /* 8px */
  --space-sm: 0.75rem; /* 12px */
  --space-md: 1rem; /* 16px */
  --space-lg: 1.5rem; /* 24px */
  --space-xl: 2.5rem; /* 40px */
  --space-2xl: 4rem; /* 64px */
  --space-3xl: 4rem; /* 64px */

  /* === LAYOUT CONSTRAINTS === */
  --content-width: min(80vw, 72rem);
  --content-padding: 1.25rem;

  /* === FONTS === */
  --font-sans:
    "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  --font-mono:
    "JetBrains Mono", "Fira Code", "Cascadia Code", ui-monospace, monospace;

  /* === TRANSITIONS === */
  --transition-speed: 300ms;
  --transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ====================================
   RESET & BASE STYLES
   ==================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  height: 100%;
  scroll-behavior: auto;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  /* line-height: 1.75; */
  color: var(--color-text-primary);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0.5rem;
  background-color: var(--color-accent);
  color: #ffffff;
  padding: var(--space-xs) var(--space-sm);
  border-radius: 4px;
  z-index: 1000;
  transition: left var(--transition-speed) var(--transition-easing);
}

.skip-link:focus,
.skip-link:focus-visible {
  left: 1rem;
}

/* ====================================
   TYPOGRAPHY HIERARCHY
   ==================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: var(--font-size-xl);
}

h2 {
  font-size: var(--font-size-4);
}

h3 {
  font-size: var(--font-size-sm);
}

h4 {
  font-size: var(--font-size-base);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-md);
}

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

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-speed) var(--transition-easing);
}

a:visited {
  color: var(--color-link-visited);
}

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

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

ul, ol {
  list-style-position: inside;
}

/* ====================================
   SITE HEADER: IDENTITY
   ==================================== */
.site-header {
  padding: var(--space-md) var(--content-padding) var(--space-md);
  text-align: center;
  border-bottom: 2px solid var(--color-border-strong);
}

.site-branding {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.site-branding .site-title {
  margin-bottom: 0;
}

.site-branding .site-title a {
  color: var(--color-text-primary);
}

.site-branding .site-title a:hover {
  color: var(--color-accent-hover);
}

.site-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.site-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* === NAVIGATION === */
.site-nav {
  margin-top: var(--space-lg);
}

.site-nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.site-nav a {
  font-family: var(--font-mono);
  font-size: var(--font-size-md);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  padding: var(--space-xs) var(--space-sm);
  border-bottom: 2px solid transparent;
  transition:
    border-color var(--transition-speed) var(--transition-easing),
    background var(--transition-speed) var(--transition-easing);
}

.site-nav a:hover {
  opacity: 1;
  border-bottom-color: var(--color-accent);
  background: var(--color-surface);
}

.site-nav a[aria-current="page"] {
  opacity: 1;
  border-bottom-color: var(--color-accent);
  font-weight: 700;
}

.site-nav a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

.site-nav button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  padding: var(--space-xs);
  color: var(--color-text-primary);
}

.site-nav button:hover {
  opacity: 0.7;
}

.site-nav button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  border-radius: 4px;
}

.site-nav svg {
  width: 20px;
  height: 20px;
}

/* ====================================
   MAIN CONTENT: CENTERED STREAM
   ==================================== */
.main-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: var(--space-md) var(--content-padding);
}

/* ====================================
   POST LIST: HOME PAGE
   ==================================== */
.post-list-header {
  margin-bottom: var(--space-sm);
  text-align: left;
}

.post-list-header h1 {
  margin-bottom: var(--space-xs);
}

.post-list-header p {
  margin: 0;
  color: var(--color-text-muted);
}

.post-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: 0;
  width: 100%;
}

.post-list > li {
  width: 95%;
  max-width: 95%;
}

.post-card {
  background: var(--color-surface);
  border: 2px solid var(--color-border-strong);
  /* padding: var(--space-lg); */
  text-align: left;
  width: 100%;
  contain: layout style paint;
  transition:
    transform var(--transition-speed) var(--transition-easing),
    box-shadow var(--transition-speed) var(--transition-easing);
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 8px 8px 0 var(--color-text-muted);
  will-change: transform;
}

.post-card h2 {
  margin-bottom: var(--space-sm);
  line-height: 1.1;
}

.post-card h2 a {
  color: var(--color-text-primary);
}

.post-card h2 a:hover {
  opacity: 1;
  color: var(--color-accent);
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
}

.post-card time {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-card p {
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--color-text-secondary);
  margin-top: var(--space-md);
  margin-bottom: var(--space-md);
}

.post-card p:last-child {
  margin-bottom: 0;
}

/* ====================================
   TAG SYSTEM
   ==================================== */
.tags {
  margin-top: var(--space-md);
}

.tags ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.tags li {
  margin: 0;
}

.tag {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  padding: 0.25rem 0.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-secondary);
  font-weight: 500;
  transition:
    background var(--transition-speed) var(--transition-easing),
    color var(--transition-speed) var(--transition-easing),
    border-color var(--transition-speed) var(--transition-easing);
}

.tag:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
  opacity: 1;
}

.topics {
  margin-top: var(--space-sm);
  color: var(--color-text-muted);
}

.topics small {
  font-size: var(--font-size-sm);
}

/* ====================================
   VIEW COUNTER
   ==================================== */
.post-views {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.post-views svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.view-count {
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ====================================
   SINGLE POST VIEW
   ==================================== */
.post-content {
  background: var(--color-surface);
  border: 2px solid var(--color-border-strong);
  padding: var(--space-2xl);
  text-align: left;
}

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

.post-header h1 {
  font-size: var(--font-size-4);
  margin-bottom: var(--space-sm);
  text-align: left;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin: 0 0 var(--space-sm);
}

.post-meta time {
  display: inline-block;
}

/* Post content typography */
.content h2 {
  font-size: var(--font-size-3);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.content h3 {
  font-size: var(--font-size-lg);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.content p {
  margin-bottom: var(--space-lg);
  line-height: 1.75;
}

.content ul,
.content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
  list-style-position: outside;
}

.content li {
  margin-bottom: var(--space-sm);
}

/* Inline code */
.content code {
  font-family: var(--font-mono);
  font-size: 0.7em;
  background: var(--color-code-inline-bg);
  color: var(--color-code-bg);
  padding: 0.2em 0.5em;
  border-radius: 0.35rem;
  /* border: 1px solid var(--color-code-border); */
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

/* Code blocks with syntax highlighting */
.content pre {
  background: var(--color-code-bg);
  color: var(--code-variable);
  border: 1px solid var(--color-code-border);
  box-shadow: var(--color-code-shadow);
  padding: calc(var(--space-lg) + 0.25rem);
  margin-bottom: var(--space-lg);
  overflow-x: auto;
  border-radius: 0.75rem;
  line-height: 1.5;
}

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

/* Highlight.js theme integration with our color system */
.content pre code.hljs {
  display: block;
  padding: 0;
  background: transparent;
  border: none;
}

.content pre.hljs {
  padding: var(--space-lg);
}

/* Override highlight.js background to match our theme */
.hljs {
  background: var(--color-code-bg) !important;
}

/* Syntax highlighting token colors */
.hljs-keyword,
.hljs-selector-tag,
.hljs-literal,
.hljs-section,
.hljs-link {
  color: var(--code-keyword);
  font-weight: 600;
}

.hljs-string,
.hljs-title,
.hljs-name,
.hljs-type,
.hljs-attribute,
.hljs-symbol,
.hljs-bullet,
.hljs-addition,
.hljs-variable,
.hljs-template-tag,
.hljs-template-variable {
  color: var(--code-string);
}

.hljs-function,
.hljs-built_in,
.hljs-builtin-name {
  color: var(--code-function);
  font-weight: 500;
}

.hljs-comment,
.hljs-quote,
.hljs-deletion,
.hljs-meta {
  color: var(--code-comment);
  font-style: italic;
}

.hljs-number,
.hljs-regexp,
.hljs-literal {
  color: var(--code-number);
}

.hljs-attr,
.hljs-property {
  color: var(--code-property);
}

.hljs-operator {
  color: var(--code-operator);
}

.hljs-emphasis {
  font-style: italic;
}

.hljs-strong {
  font-weight: bold;
}

/* Dark mode adjustments for code highlighting */
[data-theme="dark"] .content pre {
  background: var(--color-code-bg);
  border-color: var(--color-code-border);
  box-shadow: var(--color-code-shadow);
}

[data-theme="dark"] .content code {
  /* background: var(--color-code-bg); */
  border-color: var(--color-code-border);
  color: var(--code-variable);
}

[data-theme="dark"] .hljs {
  background: var(--color-code-bg) !important;
}

@media (prefers-color-scheme: dark) {
  .content pre {
    background: var(--color-code-bg);
    border-color: var(--color-code-border);
    box-shadow: var(--color-code-shadow);
  }

  .content code {
    background: var(--color-code-bg);
    /* border-color: var(--color-code-border); */
    color: var(--code-variable);
  }

  .hljs {
    background: var(--color-code-bg) !important;
  }
}

.content blockquote {
  border-left: 4px solid var(--color-accent);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

.content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: var(--space-xl) auto;
  border: 1px solid var(--color-border);
}

/* ====================================
   TOPICS INDEX PAGE
   ==================================== */
.topic-section {
  margin-bottom: var(--space-3xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Topic headings - centered */
.topic-section h2 {
  font-size: var(--font-size-4);
  margin: 0 auto var(--space-lg);
  max-width: 800px;
  text-align: center;
}

.topics-title {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-xl);
}

.tag-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  list-style: none;
  padding: 0;
  margin: 0 auto;
  max-width: 800px;
}

.tag-grid .tag {
  text-align: center;
  padding: 0.3rem 0.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
}

/* ====================================
   ABOUT PAGE
   ==================================== */
.about-content {
  background: var(--color-surface);
  border: 2px solid var(--color-border-strong);
  padding: var(--space-2xl);
  text-align: left;
}

.about-content h1 {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.about-content h2 {
  font-size: var(--font-size-lg);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.about-content ul {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.about-content li {
  margin-bottom: var(--space-sm);
}

.about-content .social-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-xl) auto 0;
}

.about-content .social-links a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.45rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: var(--font-size-sm);
  background: var(--color-bg);
  letter-spacing: 0.02em;
  transition:
    background-color var(--transition-speed) var(--transition-easing),
    border-color var(--transition-speed) var(--transition-easing),
    transform var(--transition-speed) var(--transition-easing);
}

.about-content .social-links svg {
  width: 1.1rem;
  height: 1.1rem;
}

.about-content .social-links span {
  display: inline-flex;
  align-items: center;
}

.about-content .social-links a:hover {
  background: var(--color-accent-subtle);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.about-content .social-links a:focus-visible {
  outline-offset: 4px;
}

/* ====================================
   RSS SUBSCRIPTION PAGE
   ==================================== */
.rss-content {
  background: var(--color-surface);
  border: 2px solid var(--color-border-strong);
  padding: var(--space-2xl);
  text-align: left;
}

.rss-content h1 {
  text-align: center;
  margin-bottom: var(--space-md);
}

.rss-content h2 {
  font-size: var(--font-size-4);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.feed-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin: var(--space-md) 0;
}

.feed-link {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  flex: 1;
  min-width: 200px;
  padding: var(--space-sm);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  word-break: break-all;
}

.feed-link:hover {
  opacity: 1;
  background: var(--color-surface);
}

button.copy {
  font-size: var(--font-size-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: white;
  border: 1px solid var(--color-accent);
  border-radius: 0.25rem;
  cursor: pointer;
  font-family: var(--font-mono);
  transition: background var(--transition-speed) var(--transition-easing);
}

button.copy:hover {
  background: var(--color-accent-hover);
}

.topic-feed {
  margin: var(--space-xl) 0;
}

.topic-feed h3 {
  margin-bottom: var(--space-md);
}

.topic-feed .topic-count {
  margin: 0 0 var(--space-sm);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* ====================================
   SEARCH & MODAL
   ==================================== */
dialog {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 90%;
  width: 500px;
  background: var(--color-surface);
  border: 2px solid var(--color-border-strong);
  border-radius: 0.5rem;
  padding: var(--space-2xl);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.5);
}

dialog h2 {
  margin-bottom: var(--space-md);
}

dialog form {
  margin-bottom: var(--space-lg);
}

dialog input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 2px solid var(--color-border);
  border-radius: 0.25rem;
  font-size: var(--font-size-base);
  font-family: var(--font-sans);
}

dialog input:focus {
  outline: none;
  border-color: var(--color-accent);
}

dialog button {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: var(--space-xs);
  color: var(--color-text-secondary);
}

dialog button:hover {
  color: var(--color-text-primary);
}

/* ====================================
   SITE FOOTER
   ==================================== */
.site-footer {
  border-top: 2px solid var(--color-border-strong);
  padding: var(--space-2xl) var(--content-padding);
  text-align: center;
  margin-top: var(--space-3xl);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.footer-separator {
  color: var(--color-text-muted);
}

.site-footer a {
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
}

.site-footer a:hover {
  color: var(--color-accent);
}

.github-link svg {
  flex-shrink: 0;
}

/* ====================================
   THEME SWITCHER
   ==================================== */
.theme-toggle {
  position: relative;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
  position: absolute;
  transition:
    opacity var(--transition-speed) var(--transition-easing),
    transform var(--transition-speed) var(--transition-easing);
}

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

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

.theme-toggle:hover .sun-icon,
.theme-toggle:hover .moon-icon {
  transform: rotate(20deg) scale(1.1);
}

/* ====================================
   DARK MODE
   ==================================== */
@media (prefers-color-scheme: dark) {
  :root {
    /* Background: True black causes eye strain - use warm dark grey */
    --color-bg: #1c1b18;
    --color-surface: #252420;

    /* Text: Slightly off-white reduces glare */
    --color-text-primary: #e8e6e1;
    --color-text-secondary: #c4c2bc;
    --color-text-muted: #8a8983;

    /* Accent: Lighter purple for dark mode (WCAG AAA) */
    --color-accent: #9b8fe8;
    --color-accent-hover: #b5abf0;
    --color-accent-subtle: #2d2940;

    /* Borders: Subtle in dark mode */
    --color-border-light: #333229;
    --color-border: #444339;
    --color-border-strong: #666;

    /* Semantic colors adjusted for dark */
    --color-link: #9b8fe8;
    --color-link-visited: #b9a8f5;
    --color-code-bg: #0d1117;
    --color-code-border: rgba(4, 10, 20, 0.8);
    --color-code-shadow: 0 24px 52px -18px rgba(0, 0, 0, 0.6);

    /* Code syntax highlighting colors for dark mode - brighter for contrast */
    --code-keyword: #ff7b95;
    --code-string: #8ddc8a;
    --code-function: #7aa2f7;
    --code-comment: #7f8aa9;
    --code-number: #ffb86c;
    --code-property: #bdd0ff;
    --code-operator: #7ce6ff;
    --code-variable: #f4f7ff;
  }
}

/* Manual theme override with data-theme attribute */
[data-theme="dark"] {
  --color-bg: #1c1b18;
  --color-surface: #252420;
  --color-text-primary: #e8e6e1;
  --color-text-secondary: #c4c2bc;
  --color-text-muted: #8a8983;
  --color-accent: #9b8fe8;
  --color-accent-hover: #b5abf0;
  --color-accent-subtle: #2d2940;
  --color-border-light: #333229;
  --color-border: #444339;
  --color-border-strong: #666;
  --color-link: #9b8fe8;
  --color-link-visited: #b9a8f5;
  --color-code-bg: #0d1117;
  --color-code-border: rgba(4, 10, 20, 0.8);
  --color-code-shadow: 0 24px 52px -18px rgba(0, 0, 0, 0.6);

  /* Code syntax highlighting colors for dark mode - brighter for contrast */
  --code-keyword: #ff7b95;
  --code-string: #8ddc8a;
  --code-function: #7aa2f7;
  --code-comment: #7f8aa9;
  --code-number: #ffb86c;
  --code-property: #bdd0ff;
  --code-operator: #7ce6ff;
  --code-variable: #f4f7ff;
}

[data-theme="light"] {
  --color-bg: #fefdf8;
  --color-surface: #f9f8f3;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #3a3a3a;
  --color-text-muted: #6a6a6a;
  --color-accent: #5b4fc6;
  --color-accent-hover: #453aa3;
  --color-accent-subtle: #e8e5f7;
  --color-border-light: #e8e6df;
  --color-border: #d4d2c8;
  --color-border-strong: #2a2a2a;
  --color-link: #5b4fc6;
  --color-link-visited: #7b6fd6;
  --color-code-bg: #10131b;
  --color-code-border: rgba(12, 18, 28, 0.85);
  --color-code-shadow: 0 24px 45px -18px rgba(7, 10, 18, 0.55);

  /* Code syntax highlighting colors - optimized for high contrast */
  --code-keyword: #f7768e;
  --code-string: #9ece6a;
  --code-function: #7aa2f7;
  --code-comment: #7b82a3;
  --code-number: #ff9e64;
  --code-property: #c0caf5;
  --code-operator: #89ddff;
  --code-variable: #e3ecff;
}

/* ====================================
   PALETTE VARIANTS (Automerge-inspired)
   ==================================== */
/* Automerge-inspired light palette: off-white paper, strong ink lines, electric blue accents */
[data-palette="automerge"] {
  /* Automerge-inspired, but clearly distinct from the default palette */
  --color-bg: #fff6e5; /* warm cream paper */
  --color-surface: #fffdfa; /* near-white warm surface */
  --color-text-primary: #232016; /* warm ink */
  --color-text-secondary: #4a4332;
  --color-text-muted: #7a715c;

  /* Bolder, cooler accent for strong contrast with warm paper */
  --color-accent: #2b6de9; /* cobalt */
  --color-accent-hover: #1e4fcb;
  --color-accent-subtle: #e6efff;

  /* Warmer border tones to match paper */
  --color-border-light: #eadfcb;
  --color-border: #e1d5bd;
  --color-border-strong: #232016;

  /* Links explicitly blue for higher distinctiveness */
  --color-link: #2b6de9;
  --color-link-visited: #6a95ff;

  /* Keep code block styling as-is */
  --color-code-bg: #10131b;
  --color-code-border: rgba(12, 18, 28, 0.85);
  --color-code-shadow: 0 24px 45px -18px rgba(7, 10, 18, 0.55);
}

/* Automerge dark theme overrides (mirror of light-dark() behavior) */
html[data-palette="automerge"][data-theme="dark"] {
  /* Sepia-dark variant for clear distinction */
  --color-bg: #1e1c17; /* warm charcoal */
  --color-surface: #24211b; /* deeper surface */
  --color-text-primary: #f5efe4; /* warm white */
  --color-text-secondary: #d8d2c6;
  --color-text-muted: #a59d8d;

  /* Accents tuned for dark */
  --color-accent: #ffd24a; /* honey */
  --color-accent-hover: #ffcc33;

  --color-border-light: #3a352b;
  --color-border: #4a4336;
  --color-border-strong: #f5efe4;

  /* Links pop in dark mode */
  --color-link: #6aa0ff;
  --color-link-visited: #8bb4ff;
}

/* Dotted paper background inspired by Automerge */
html[data-palette="automerge"][data-theme="light"] body {
  background-color: var(--color-bg);
  background-image: url('data:image/svg+xml,<svg fill="%23222" xmlns="http://www.w3.org/2000/svg"><circle cx="1" cy="1" r=".5"/><circle cx="3" cy="3" r=".5"/></svg>');
  background-size: 4px 4px;
  background-repeat: repeat;
  image-rendering: pixelated;
}

html[data-palette="automerge"][data-theme="dark"] body {
  background-color: var(--color-bg);
  background-image: url('data:image/svg+xml,<svg fill="%23fc3" xmlns="http://www.w3.org/2000/svg"><rect x="0.5" y="0.5" width="1" height="1" /><rect x="2.5" y="2.5" width="1" height="1" /></svg>');
  background-size: 4px 4px;
  background-repeat: repeat;
  image-rendering: pixelated;
}

/* Optional explicit default palette (no overrides needed since :root is the default)
[data-palette="default"] { }
*/

/* ====================================
   RESPONSIVE ARCHITECTURE
   ==================================== */
/* Mobile optimizations */
@media (max-width: 767px) {
  :root {
    /* Reduce font sizes on mobile */
    --font-size-xs: 0.7rem;
    --font-size-sm: 0.75rem;
    --font-size-base: 0.85rem;
    --font-size-lg: 1rem;
    --font-size-xl: 1.3rem;
    --font-size-2xl: 1.75rem;

    /* Minimal padding on mobile */
    --content-padding: 0.75rem;
  }

  /* Remove centering constraints on mobile */
  .main-content {
    max-width: 100%;
    padding: var(--space-2xl) var(--content-padding);
  }

  /* Make post list and cards full width */
  .post-list {
    width: 100%;
    align-items: stretch;
    gap: var(--space-xl);
  }

  .post-list > li {
    width: 100%;
    max-width: 100%;
  }

  .post-card {
    width: 100%;
    padding: var(--space-lg);
  }

  /* Full width content on individual posts */
  .post-content,
  .about-content,
  .rss-content {
    padding: var(--space-sm);
  }
}

@media (min-width: 768px) {
  :root {
    --content-padding: 2rem;
  }

  .post-card,
  .post-content,
  .about-content,
  .rss-content {
    padding: var(--space-xl);
  }
}

@media (min-width: 1024px) {
  :root {
    --content-padding: 3rem;
  }
}

/* ====================================
   ACCESSIBILITY
   ==================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print styles */
@media print {
  .site-nav,
  dialog,
  button {
    display: none;
  }

  body {
    background: var(--color-bg);
    color: var(--color-text-primary);
  }

  .post-card,
  .post-content {
    border: 1px solid #000;
    box-shadow: none;
  }
}