/* ==========================================================================
   TSARTSARIS BLOG PREMIUM - Main Stylesheet
   A dark-mode-first theme with terminal-inspired aesthetics
   ========================================================================== */

/* ==========================================================================
   Section 1: CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
  /* ---- Colors ---- */
  --color-primary: #ff7a00;
  --color-primary-light: #ff9a33;
  --color-primary-dark: #e06800;
  --color-primary-glow: rgba(255, 122, 0, 0.15);

  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #1a1a25;
  --color-bg-surface: #22222e;

  --color-text-primary: #e8e8ed;
  --color-text-secondary: #9a9ab0;
  --color-text-muted: #5a5a70;

  --color-border: #2a2a3a;
  --color-border-accent: rgba(255, 122, 0, 0.3);

  --color-code-bg: #161620;

  --color-success: #00d68f;
  --color-error: #ff3d71;

  /* ---- Typography ---- */
  --font-heading: 'JetBrains Mono', monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-code: 'JetBrains Mono', 'Courier New', monospace;

  --font-size-base: 17px;
  --font-size-sm: 0.875rem;
  --font-size-xs: 0.75rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-base: 1.7;
  --line-height-heading: 1.2;
  --line-height-tight: 1.4;

  /* ---- Spacing Scale ---- */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* ---- Border Radius ---- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 50%;

  /* ---- Transitions ---- */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* ---- Z-Index Scale ---- */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 500;
  --z-mobile-nav: 999;
  --z-header: 1000;
  --z-progress-bar: 1001;
  --z-modal: 2000;
  --z-tooltip: 3000;

  /* ---- Container Widths ---- */
  --container-content: 720px;
  --container-wide: 1200px;
  --container-full: 100%;

  /* ---- Misc ---- */
  --header-height: 72px;
  --accent-line-height: 3px;
}

/* ==========================================================================
   Section 2: Modern CSS Reset
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--accent-line-height) + 1rem);
}

body {
  min-height: 100vh;
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

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

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* ==========================================================================
   Section 3: Base Styles
   ========================================================================== */

body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-heading);
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: var(--space-md);
}

h4 {
  font-size: clamp(1.1rem, 2.5vw, 1.375rem);
  margin-bottom: var(--space-sm);
}

h5 {
  font-size: clamp(1rem, 2vw, 1.125rem);
  margin-bottom: var(--space-sm);
}

h6 {
  font-size: clamp(0.875rem, 1.5vw, 1rem);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Links */
a {
  color: var(--color-primary);
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

/* Paragraphs */
p {
  margin-bottom: var(--space-lg);
  line-height: var(--line-height-base);
}

/* Lists inside content */
.entry-content ul,
.entry-content ol,
.single-content ul,
.single-content ol {
  padding-left: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.entry-content ul {
  list-style: disc;
}

.entry-content ol {
  list-style: decimal;
}

.entry-content li,
.single-content li {
  margin-bottom: var(--space-xs);
  line-height: var(--line-height-base);
}

/* Blockquote */
blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  color: var(--color-text-secondary);
  font-style: italic;
  line-height: var(--line-height-base);
}

blockquote cite {
  display: block;
  margin-top: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-style: normal;
}

/* Horizontal rule */
hr {
  border: none;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-border) 20%,
    var(--color-border) 80%,
    transparent
  );
  margin: var(--space-xxl) 0;
}

/* Code (inline) */
code {
  font-family: var(--font-code);
  font-size: 0.9em;
  background-color: var(--color-code-bg);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--color-primary-light);
}

/* Pre (code blocks) */
pre {
  font-family: var(--font-code);
  font-size: 14px;
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
  color: var(--color-text-primary);
}

/* Selection */
::selection {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
}

::-moz-selection {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-bg-surface);
  border-radius: 5px;
  border: 2px solid var(--color-bg-secondary);
}

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

/* Firefox scrollbar */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--color-bg-surface) var(--color-bg-secondary);
}

/* ==========================================================================
   Section 4: Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-wide);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.site-content {
  padding-top: calc(var(--header-height) + var(--accent-line-height));
}

.content-area {
  max-width: var(--container-content);
  margin-left: auto;
  margin-right: auto;
}

.content-sidebar-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xxl);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.flex-col {
  flex-direction: column;
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.gap-lg {
  gap: var(--space-lg);
}

/* ==========================================================================
   Section 5: Header & Navigation
   ========================================================================== */

/* Gradient accent line at the very top of the page */
.accent-line {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--accent-line-height);
  background: linear-gradient(
    90deg,
    var(--color-primary),
    var(--color-primary-light) 40%,
    transparent 100%
  );
  z-index: calc(var(--z-header) + 2);
  pointer-events: none;
}

/* Site header */
.site-header {
  position: fixed;
  top: var(--accent-line-height);
  left: 0;
  width: 100%;
  z-index: var(--z-header);
  background-color: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background-color: rgba(10, 10, 15, 0.95);
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.3);
}

.header-inner,
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: var(--header-height);
}

/* Site branding / logo */
.site-branding {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.site-branding a {
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.site-branding a:hover {
  text-decoration: none;
}

.site-branding .custom-logo {
  height: 36px;
  width: auto;
}

.site-branding .logo-text,
.site-branding .site-branding__text {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
  text-decoration: none;
}

.site-branding .site-branding__name {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  letter-spacing: -0.02em;
}

.site-branding .cursor,
.site-branding .site-branding__cursor {
  display: inline-block;
  color: var(--color-primary);
  animation: blink-cursor 1s step-end infinite;
}

/* Primary navigation */
.primary-nav {
  display: none;
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
  padding: 0;
  margin: 0;
}

.primary-nav li {
  position: relative;
}

.primary-nav a {
  font-family: var(--font-body);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-xs) 0;
  transition: color var(--transition-base);
  position: relative;
}

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

.primary-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.primary-nav a:hover::after {
  width: 100%;
}

.primary-nav .current-menu-item > a,
.primary-nav .current_page_item > a {
  color: var(--color-primary);
}

.primary-nav .current-menu-item > a::after,
.primary-nav .current_page_item > a::after {
  width: 100%;
}

/* Sub-menus */
.primary-nav .sub-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: -1rem;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) 0;
  min-width: 200px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  flex-direction: column;
  gap: 0;
  z-index: var(--z-dropdown);
}

.primary-nav li:hover > .sub-menu {
  display: flex;
}

.primary-nav .sub-menu a {
  padding: var(--space-xs) var(--space-lg);
  font-size: var(--font-size-sm);
  white-space: nowrap;
}

.primary-nav .sub-menu a::after {
  display: none;
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-actions button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition:
    color var(--transition-base),
    background-color var(--transition-base);
}

.header-actions button:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-glow);
}

.header-actions button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Dark mode toggle icon visibility */
.dark-mode-toggle .icon-sun,
.dark-mode-toggle .icon-moon,
.dark-mode-toggle .icon--sun,
.dark-mode-toggle .icon--moon {
  display: none;
}

html:not(.light-mode) .dark-mode-toggle .icon-sun,
html:not(.light-mode) .dark-mode-toggle .icon--sun {
  display: block;
}

html.light-mode .dark-mode-toggle .icon-moon,
html.light-mode .dark-mode-toggle .icon--moon {
  display: block;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-secondary);
  border-radius: 1px;
  transition:
    transform var(--transition-base),
    opacity var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Section 6: Mobile Navigation
   ========================================================================== */

.mobile-nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(10, 10, 15, 0.98);
  z-index: var(--z-mobile-nav);
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(-20px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

.mobile-nav-overlay.active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav {
  text-align: center;
}

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

.mobile-nav li {
  margin-bottom: var(--space-lg);
}

.mobile-nav a {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
  display: inline-block;
}

.mobile-nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.mobile-nav .current-menu-item > a,
.mobile-nav .current_page_item > a {
  color: var(--color-primary);
}

.mobile-nav .sub-menu {
  margin-top: var(--space-sm);
  padding-left: 0;
}

.mobile-nav .sub-menu a {
  font-size: clamp(1rem, 3vw, 1.5rem);
  color: var(--color-text-secondary);
}

/* ==========================================================================
   Section 7: Hero / Blog Header
   ========================================================================== */

.blog-hero {
  padding: var(--space-4xl) 0;
  text-align: center;
  position: relative;
}

.blog-hero .tagline,
.blog-hero .typing-text {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
  display: inline-block;
}

.blog-hero .tagline .cursor,
.blog-hero .typing-cursor {
  display: inline-block;
  color: var(--color-primary);
  animation: blink-cursor 1s step-end infinite;
}

.blog-hero h1,
.blog-hero .blog-hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--space-lg);
}

.blog-hero .hero-description,
.blog-hero .blog-hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--line-height-base);
}

/* Featured post */
.featured-post {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: var(--space-xxl);
  max-width: var(--container-wide);
  margin-left: auto;
  margin-right: auto;
}

.featured-post .featured-image {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  display: block;
}

.featured-post .featured-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-xxl) var(--space-xl) var(--space-xl);
  background: linear-gradient(to top, rgba(10, 10, 15, 0.95) 0%, transparent 100%);
}

.featured-post .category-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}


.featured-post .featured-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.featured-post .featured-title a {
  color: inherit;
  text-decoration: none;
}

.featured-post .featured-title a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.featured-post .featured-meta {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ==========================================================================
   Section 8: Post Cards
   ========================================================================== */

/* Posts grid container */
.posts-grid,
.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .posts-grid,
  .content-grid:not(.content-grid--has-sidebar) {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1280px) {
  .posts-grid,
  .content-grid:not(.content-grid--has-sidebar) {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Sidebar layout */
.content-grid--has-sidebar {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xxl);
}

@media (min-width: 1024px) {
  .content-grid--has-sidebar {
    grid-template-columns: 1fr 300px;
  }

  .content-grid--sidebar-left {
    direction: rtl;
  }

  .content-grid--sidebar-left > * {
    direction: ltr;
  }
}

.content-grid__main .posts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .content-grid__main .posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Post card */
.post-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--color-primary-glow);
  border-color: var(--color-border-accent);
}

.post-card .card-thumbnail {
  position: relative;
  overflow: hidden;
}

.post-card .card-thumbnail img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.post-card:hover .card-thumbnail img {
  transform: scale(1.03);
}

.post-card .card-thumbnail::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 60%,
    rgba(10, 10, 15, 0.4) 100%
  );
  opacity: 0;
  transition: opacity var(--transition-base);
}

.post-card:hover .card-thumbnail::after {
  opacity: 1;
}

.post-card .card-content {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.post-card .category-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-decoration: none;
}


.post-card .card-title,
.post-card .card-content__title {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 2vw, 1.25rem);
  margin-top: var(--space-xs);
  line-height: var(--line-height-tight);
}

.post-card .card-title a,
.post-card .card-content__title a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.post-card .card-title a:hover,
.post-card .card-content__title a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.post-card .card-excerpt,
.post-card .card-content__excerpt {
  color: var(--color-text-secondary);
  margin-top: var(--space-sm);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.post-card .card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.post-card .card-meta .meta-separator,
.post-card .card-meta .card-meta__separator {
  color: var(--color-text-muted);
}

/* ==========================================================================
   Section 9: Single Post
   ========================================================================== */

.single-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding-top: var(--space-xxl);
}

.single-header .category-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  text-decoration: none;
}

.single-header h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--space-lg);
}

.single-header .post-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  color: var(--color-text-secondary);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
}

/* Single layout (with optional ToC sidebar) */
.single-layout {
  max-width: var(--container-content);
  margin: 0 auto;
}

.single-layout--has-toc {
  max-width: var(--container-wide);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xxl);
}

@media (min-width: 1024px) {
  .single-layout--has-toc {
    grid-template-columns: 1fr 280px;
  }
}

/* Single featured image */
.single-featured-image,
.single-content__featured {
  max-width: var(--container-wide);
  margin: var(--space-xl) auto;
}

.single-featured-image img,
.single-content__featured img {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* Single content */
.single-content {
  max-width: var(--container-content);
  margin: 0 auto;
}

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

.single-content p {
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.single-content h2,
.single-content h3,
.single-content h4 {
  font-family: var(--font-heading);
  margin-top: var(--space-xxl);
  margin-bottom: var(--space-md);
}

.single-content h2 {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-md);
}

.single-content h3 {
  color: var(--color-text-primary);
}

.single-content h4 {
  color: var(--color-text-secondary);
}

.single-content pre {
  background-color: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  overflow-x: auto;
  position: relative;
  margin-bottom: var(--space-lg);
}

.single-content code {
  font-family: var(--font-code);
  font-size: 0.9em;
  background-color: var(--color-code-bg);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
}

.single-content pre code {
  background: none;
  padding: 0;
  font-size: 14px;
  color: var(--color-text-primary);
}

.single-content img {
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
}

.single-content blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-lg);
  color: var(--color-text-secondary);
  font-style: italic;
  margin: var(--space-xl) 0;
}

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

.single-content ol {
  list-style: decimal;
}

.single-content li {
  margin-bottom: var(--space-xs);
  line-height: 1.8;
}

.single-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--transition-base);
}

.single-content a:hover {
  color: var(--color-primary-light);
}

.single-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) 0;
  font-size: var(--font-size-sm);
}

.single-content table th {
  background-color: var(--color-bg-tertiary);
  font-family: var(--font-heading);
  font-weight: var(--font-weight-semibold);
  text-align: left;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
}

.single-content table td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.single-content table tr:nth-child(even) {
  background-color: var(--color-bg-secondary);
}

/* ==========================================================================
   Section 10: Table of Contents
   ========================================================================== */

.toc-wrapper {
  position: sticky;
  top: calc(var(--header-height) + var(--accent-line-height) + var(--space-lg));
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  max-height: calc(100vh - var(--header-height) - var(--accent-line-height) - var(--space-xl));
  overflow-y: auto;
}

.toc-wrapper h4 {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

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

.toc-list li {
  margin-bottom: 0;
}

.toc-list a {
  display: block;
  padding: var(--space-xs) var(--space-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition:
    color var(--transition-base),
    border-color var(--transition-base);
  line-height: var(--line-height-tight);
}

.toc-list a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.toc-list a.active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

.toc-list .toc-h3 a {
  padding-left: calc(var(--space-sm) + var(--space-md));
}

.toc-list .toc-h4 a {
  padding-left: calc(var(--space-sm) + var(--space-xl));
}

/* Mobile ToC - collapsible */
.toc-toggle {
  display: none;
  width: 100%;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
}

.toc-toggle svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  transition: transform var(--transition-base);
}

.toc-toggle.active svg {
  transform: rotate(180deg);
}

/* ==========================================================================
   Section 11: Post Meta & Components
   ========================================================================== */

.post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
}

.post-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  color: var(--color-text-secondary);
}

.post-meta .meta-item svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  flex-shrink: 0;
}

.post-meta .meta-separator {
  color: var(--color-text-muted);
  user-select: none;
}

/* Post-meta BEM variants */
.post-meta__date {
  color: var(--color-text-secondary);
}

.post-meta__author {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.post-meta__avatar {
  border-radius: var(--radius-full);
  width: 32px;
  height: 32px;
  display: inline-block;
  vertical-align: middle;
}

.post-meta__author-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-base);
}

.post-meta__author-link:hover {
  color: var(--color-primary-light);
}

.post-meta__reading-time,
.post-meta__views {
  color: var(--color-text-muted);
}

.reading-time {
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
}

/* Author bio */
.author-bio {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-xxl);
  align-items: flex-start;
}

.author-bio .author-avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.author-bio .author-info {
  flex: 1;
}

.author-bio .author-label {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.author-bio .author-name {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.author-bio .author-name a {
  color: inherit;
  text-decoration: none;
}

.author-bio .author-name a:hover {
  color: var(--color-primary);
}

.author-bio .author-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
}

/* Post tags */
.post-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-xl);
}

.post-tags > .icon {
  color: var(--color-text-muted);
  flex-shrink: 0;
  width: 16px;
  height: 16px;
}

.post-tags .tag {
  display: inline-block;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 0.3em 0.8em;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition:
    border-color var(--transition-base),
    color var(--transition-base);
}

.post-tags .tag:hover {
  border-color: var(--color-border-accent);
  color: var(--color-primary);
  text-decoration: none;
}

/* Share buttons */
.share-buttons,
.post-share {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.post-share__label {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-right: var(--space-xs);
}

.share-buttons .share-btn,
.post-share__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition:
    border-color var(--transition-base),
    color var(--transition-base),
    background-color var(--transition-base);
}

.share-buttons .share-btn:hover,
.post-share__btn:hover {
  border-color: var(--color-border-accent);
  color: var(--color-primary);
  text-decoration: none;
}

.share-buttons .share-btn svg,
.post-share__btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.post-share__btn--twitter svg {
  fill: currentColor;
}

.post-share__btn--linkedin svg {
  fill: currentColor;
}

/* Post navigation (prev/next) */
.post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-top: var(--space-xxl);
}

.post-navigation .nav-post {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.post-navigation .nav-post:hover {
  border-color: var(--color-border-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--color-primary-glow);
  text-decoration: none;
}

.post-navigation .nav-label,
.post-navigation .nav-post__direction {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.post-navigation .nav-post__direction svg {
  width: 14px;
  height: 14px;
}

.post-navigation .nav-title,
.post-navigation .nav-post__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  color: var(--color-primary);
  line-height: var(--line-height-tight);
}

.post-navigation .nav-post.nav-next,
.post-navigation .nav-post--next {
  text-align: right;
}

.post-navigation .nav-post--next .nav-post__direction {
  justify-content: flex-end;
}

.post-navigation .nav-post.nav-post--empty {
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  pointer-events: none;
}

/* Related posts */
.related-posts {
  margin-top: var(--space-3xl);
  padding-top: var(--space-xxl);
  border-top: 1px solid var(--color-border);
}

.related-posts h3,
.related-posts__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xl);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.related-posts__title .icon {
  color: var(--color-primary);
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.related-posts .related-grid,
.related-posts__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .related-posts .related-grid,
  .related-posts__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Related card */
.related-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px var(--color-primary-glow);
  border-color: var(--color-border-accent);
}

.related-card__thumbnail {
  position: relative;
  overflow: hidden;
  display: block;
}

.related-card__thumbnail img,
.related-card__img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.related-card:hover .related-card__thumbnail img,
.related-card:hover .related-card__img {
  transform: scale(1.03);
}

.related-card__content {
  padding: var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.related-card__content .category-badge {
  font-size: var(--font-size-xs);
  text-decoration: none;
}

.related-card__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-top: var(--space-xs);
  margin-bottom: 0;
}

.related-card__title a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.related-card__title a:hover {
  color: var(--color-primary);
}

.related-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.related-card__separator {
  color: var(--color-text-muted);
}

/* ==========================================================================
   Section 12: Sidebar & Widgets
   ========================================================================== */

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--accent-line-height) + var(--space-lg));
}

.widget {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.widget-title,
.widget > h2,
.widget > h3,
.widget .wp-block-heading {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-md);
}

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

.widget ul li {
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.widget ul li:last-child {
  border-bottom: none;
}

.widget ul li a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.widget ul li a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

/* ==========================================================================
   Section 13: Pagination
   ========================================================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin: var(--space-xxl) 0;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition:
    border-color var(--transition-base),
    color var(--transition-base),
    background-color var(--transition-base);
}

.pagination a:hover {
  border-color: var(--color-border-accent);
  color: var(--color-primary);
  text-decoration: none;
}

.pagination .current {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
  border-color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

.pagination .dots {
  border: none;
  background: none;
  color: var(--color-text-muted);
}

.pagination .prev,
.pagination .next {
  font-weight: var(--font-weight-semibold);
}

/* ==========================================================================
   Section 14: Footer
   ========================================================================== */

.site-footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-3xl);
}

/* Newsletter CTA section */
.newsletter-cta {
  border-bottom: 1px solid var(--color-border);
}

.newsletter-cta__card {
  position: relative;
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  overflow: hidden;
}

.newsletter-cta__glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 122, 0, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.newsletter-cta__title {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.newsletter-cta__title .icon {
  color: var(--color-primary);
  flex-shrink: 0;
}

.newsletter-cta__description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  font-size: var(--font-size-sm);
}

.newsletter-cta__input-group {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
  gap: var(--space-xs);
}

.newsletter-cta__input {
  flex: 1;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-base);
}

.newsletter-cta__input::placeholder {
  color: var(--color-text-muted);
}

.newsletter-cta__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.newsletter-cta__submit {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-lg);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    transform var(--transition-fast);
  white-space: nowrap;
}

.newsletter-cta__submit:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-1px);
}

.newsletter-cta__privacy {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  margin-top: var(--space-sm);
}

.newsletter-cta__message {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  margin-top: var(--space-sm);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Also keep the old .newsletter-form and .footer-newsletter selectors for compatibility */
.footer-newsletter {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.footer-newsletter h3 {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-bottom: var(--space-sm);
}

.footer-newsletter p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  font-size: var(--font-size-sm);
}

.newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
  gap: var(--space-xs);
}

.newsletter-form input[type="email"] {
  flex: 1;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-base);
}

.newsletter-form input[type="email"]::placeholder {
  color: var(--color-text-muted);
}

.newsletter-form input[type="email"]:focus {
  outline: none;
  border-color: var(--color-primary);
}

.newsletter-form button {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-lg);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    transform var(--transition-fast);
  white-space: nowrap;
}

.newsletter-form button:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-1px);
}

/* Footer main */
.footer-main {
  padding: var(--space-xxl) 0;
}

/* The actual grid container inside footer-main */
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-xxl);
  }
}

/* Footer brand / logo */
.footer-brand {
  margin-bottom: var(--space-md);
}

.footer-brand a {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  text-decoration: none;
}

.footer-brand .site-branding__cursor {
  animation: blink-cursor 1s step-end infinite;
}

/* Footer about text */
.footer-about {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
  margin-bottom: var(--space-md);
}

/* Footer headings */
.footer-heading {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-primary);
  margin-bottom: var(--space-md);
}

/* Footer menu */
.footer-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-menu li {
  margin-bottom: var(--space-xs);
}

.footer-menu li a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.footer-menu li a:hover {
  color: var(--color-primary);
}

/* Also style generic lists inside footer-main for widget compatibility */
.footer-main .footer-section-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.footer-main ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-main ul li {
  margin-bottom: var(--space-xs);
}

.footer-main ul li a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-base);
}

.footer-main ul li a:hover {
  color: var(--color-primary);
}

.footer-main .footer-description {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
}

/* Social links in footer */
.footer-social {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  transition:
    color var(--transition-base),
    border-color var(--transition-base);
}

.footer-social a:hover {
  color: var(--color-primary);
  border-color: var(--color-border-accent);
  text-decoration: none;
}

.footer-social a svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
}

/* Footer bottom */
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg);
  text-align: center;
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
}

.footer-bottom a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--color-primary);
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base),
    transform var(--transition-base),
    background-color var(--transition-base),
    color var(--transition-base);
  z-index: var(--z-fixed);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
  border-color: var(--color-primary);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
}

/* ==========================================================================
   Section 15: Search Modal
   ========================================================================== */

.search-modal {
  position: fixed;
  inset: 0;
  background-color: rgba(10, 10, 15, 0.95);
  z-index: var(--z-modal);
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.search-modal.active {
  display: flex;
  opacity: 1;
}

.search-modal-inner {
  max-width: 600px;
  width: 90%;
  position: relative;
}

.search-modal .search-close {
  position: absolute;
  top: -60px;
  right: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-base);
}

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

.search-modal .search-close svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 2;
}

.search-modal input[type="search"],
.search-modal input[type="text"] {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--color-primary);
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2rem);
  color: var(--color-text-primary);
  padding: var(--space-md) 0;
  outline: none;
  caret-color: var(--color-primary);
}

.search-modal input[type="search"]::placeholder,
.search-modal input[type="text"]::placeholder {
  color: var(--color-text-muted);
}

.search-modal .search-hint {
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  margin-top: var(--space-md);
}

.search-modal .search-hint kbd {
  display: inline-block;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.1em 0.4em;
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ==========================================================================
   Section 16: Reading Progress Bar
   ========================================================================== */

.reading-progress-bar {
  position: fixed;
  top: var(--accent-line-height);
  left: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--color-primary),
    var(--color-primary-light)
  );
  z-index: var(--z-progress-bar);
  width: 0%;
  transition: width 0.1s linear;
  pointer-events: none;
}

/* ==========================================================================
   Section 17: 404 Page
   ========================================================================== */

.error-404 {
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
}

.error-404 h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--space-lg);
}

.error-404 p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-xxl);
}

.terminal-block {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 600px;
  margin: var(--space-xl) auto;
  padding: var(--space-xl);
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

.terminal-block .terminal-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.terminal-block .terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
}

.terminal-block .terminal-dot.red {
  background-color: var(--color-error);
}

.terminal-block .terminal-dot.yellow {
  background-color: #ffcc00;
}

.terminal-block .terminal-dot.green {
  background-color: var(--color-success);
}

.terminal-block .prompt {
  color: var(--color-text-muted);
}

.terminal-block .prompt::before {
  content: '$ ';
  color: var(--color-primary);
}

.terminal-block .output {
  color: var(--color-text-secondary);
}

.terminal-block .output::before {
  content: '> ';
  color: var(--color-text-muted);
}

.terminal-block .error-line {
  color: var(--color-error);
}

.terminal-block .error-line::before {
  content: '✗ ';
}

.terminal-block .success-line {
  color: var(--color-success);
}

.terminal-block .success-line::before {
  content: '✓ ';
}

/* ==========================================================================
   Section 18: Comments
   ========================================================================== */

.comments-area {
  margin-top: var(--space-xxl);
  max-width: var(--container-content);
  margin-left: auto;
  margin-right: auto;
}

.comments-area .comments-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-xl);
}

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

.comment-list .comment {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
}

.comment-list .comment .children {
  list-style: none;
  padding-left: var(--space-xl);
  margin-top: var(--space-md);
}

.comment .comment-author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.comment .comment-author img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

.comment .comment-author .fn {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
}

.comment .comment-author .fn a {
  color: inherit;
  text-decoration: none;
}

.comment .comment-author .fn a:hover {
  color: var(--color-primary);
}

.comment .comment-author .says {
  display: none;
}

.comment .comment-metadata {
  margin-top: var(--space-xs);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.comment .comment-metadata a {
  color: inherit;
  text-decoration: none;
}

.comment .comment-metadata a:hover {
  color: var(--color-primary);
}

.comment .comment-content {
  margin-top: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
}

.comment .comment-content p:last-child {
  margin-bottom: 0;
}

.comment .reply {
  margin-top: var(--space-sm);
}

.comment .reply a {
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.comment .reply a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
}

/* Comment form */
.comment-respond {
  margin-top: var(--space-xl);
}

.comment-respond .comment-reply-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-lg);
}

.comment-respond .comment-reply-title small {
  font-size: var(--font-size-sm);
  margin-left: var(--space-sm);
}

.comment-respond .comment-reply-title small a {
  color: var(--color-text-muted);
}

.comment-form label {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xs);
}

.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-base);
  margin-bottom: var(--space-md);
}

.comment-form input:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.comment-form textarea {
  min-height: 150px;
  resize: vertical;
}

.comment-form .form-submit {
  margin-top: var(--space-md);
}

.comment-form .submit {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-xl);
  font-family: var(--font-heading);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    transform var(--transition-fast);
}

.comment-form .submit:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
}

/* ==========================================================================
   Section 19: Forms & Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    transform var(--transition-fast),
    box-shadow var(--transition-base);
  line-height: 1;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
  border: none;
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  color: var(--color-bg-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--color-primary-glow);
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--color-border-accent);
  color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary-glow);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-base);
}

.btn svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  fill: none;
  flex-shrink: 0;
}

/* Icon-only buttons (header actions, close buttons, etc.) */
.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    color var(--transition-base),
    background-color var(--transition-base);
}

.btn-icon:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-glow);
}

/* General form inputs */
input[type="text"],
input[type="email"],
input[type="url"],
input[type="password"],
input[type="search"],
input[type="number"],
input[type="tel"],
textarea,
select {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  width: 100%;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="password"]:focus,
input[type="search"]:focus,
input[type="number"]:focus,
input[type="tel"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
  font-family: var(--font-body);
}

/* WordPress search widget */
.widget .search-form {
  display: flex;
  gap: var(--space-xs);
}

.widget .search-form .search-field {
  flex: 1;
  min-width: 0;
}

.widget .search-form .search-submit {
  background-color: var(--color-primary);
  color: var(--color-bg-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background-color var(--transition-base),
    transform var(--transition-fast);
}

.widget .search-form .search-submit:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-1px);
}

/* ==========================================================================
   Section 19b: Search Page
   ========================================================================== */

/* Search header */
.search-header {
  text-align: center;
  padding: var(--space-xxl) 0 var(--space-xl);
}

.search-header__title {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: var(--space-sm);
}

.search-header__query {
  color: var(--color-primary);
  font-style: italic;
}

.search-header__count {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Post list (search results, archives) */
.post-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* Search result item */
.search-result {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.search-result:hover {
  border-color: var(--color-border-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--color-primary-glow);
}

.search-result__title {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.search-result__title a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.search-result__title a:hover {
  color: var(--color-primary);
}

.search-result__excerpt {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
  margin-bottom: var(--space-sm);
}

.search-result__meta {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.search-result__separator {
  color: var(--color-text-muted);
}

/* Custom search form (searchform.php) */
.search-form__wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xs) var(--space-sm);
  transition: border-color var(--transition-base);
}

.search-form__wrapper:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

.search-form__prompt {
  font-family: var(--font-code);
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  user-select: none;
}

.search-form__input {
  border: none !important;
  background: transparent !important;
  padding: var(--space-xs) 0 !important;
  box-shadow: none !important;
  flex: 1;
  min-width: 0;
}

.search-form__submit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition:
    color var(--transition-base),
    background-color var(--transition-base);
}

.search-form__submit:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-glow);
}

/* ==========================================================================
   Section 20: Breadcrumbs
   ========================================================================== */

.breadcrumbs {
  font-family: var(--font-heading);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: var(--space-md) 0;
}

.breadcrumbs__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  list-style: none;
  padding: 0;
  margin: 0;
}

.breadcrumbs__item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.breadcrumbs a,
.breadcrumbs__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.breadcrumbs a:hover,
.breadcrumbs__link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumbs .separator,
.breadcrumbs__separator {
  display: flex;
  align-items: center;
  color: var(--color-text-muted);
  user-select: none;
}

.breadcrumbs__separator svg {
  width: 14px;
  height: 14px;
}

.breadcrumbs .current,
.breadcrumbs__current {
  color: var(--color-text-muted);
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ==========================================================================
   Section 21: Utility Classes
   ========================================================================== */

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.screen-reader-text:focus {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
  clip: auto;
  color: var(--color-primary);
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  height: auto;
  left: 5px;
  padding: var(--space-md);
  top: 5px;
  width: auto;
  z-index: var(--z-tooltip);
}

/* Text alignment */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* Margins */
.mt-1 {
  margin-top: var(--space-xs);
}

.mt-2 {
  margin-top: var(--space-md);
}

.mt-3 {
  margin-top: var(--space-xl);
}

.mt-4 {
  margin-top: var(--space-xxl);
}

.mb-1 {
  margin-bottom: var(--space-xs);
}

.mb-2 {
  margin-bottom: var(--space-md);
}

.mb-3 {
  margin-bottom: var(--space-xl);
}

.mb-4 {
  margin-bottom: var(--space-xxl);
}

/* ==========================================================================
   Section 22: Light Mode Overrides
   ========================================================================== */

html.light-mode {
  --color-bg-primary: #fafafa;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #f0f0f5;
  --color-bg-surface: #e8e8ed;
  --color-text-primary: #1a1a2e;
  --color-text-secondary: #4a4a6a;
  --color-text-muted: #8a8aa0;
  --color-border: #d8d8e0;
  --color-code-bg: #f5f5fa;
  --color-primary-glow: rgba(255, 122, 0, 0.1);
  --color-border-accent: rgba(255, 122, 0, 0.25);
}

html.light-mode .site-header {
  background-color: rgba(250, 250, 250, 0.8);
}

html.light-mode .site-header.scrolled {
  background-color: rgba(250, 250, 250, 0.95);
}

html.light-mode .mobile-nav-overlay {
  background-color: rgba(250, 250, 250, 0.98);
}

html.light-mode .search-modal {
  background-color: rgba(250, 250, 250, 0.95);
}

html.light-mode ::selection {
  background-color: var(--color-primary);
  color: #ffffff;
}

html.light-mode ::-webkit-scrollbar-track {
  background: var(--color-bg-tertiary);
}

html.light-mode ::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-color: var(--color-bg-tertiary);
}

html.light-mode {
  scrollbar-color: var(--color-border) var(--color-bg-tertiary);
}

/* ==========================================================================
   Section 23: Responsive Breakpoints
   ========================================================================== */

/* Tablet: 768px+ */
@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .post-navigation {
    grid-template-columns: repeat(2, 1fr);
  }

  .related-posts .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }


  .primary-nav {
    display: block;
  }

  .mobile-menu-toggle {
    display: none;
  }
}

/* Desktop: 1024px+ */
@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .related-posts .related-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .content-sidebar-wrap {
    grid-template-columns: 1fr 300px;
  }


  .blog-hero {
    padding: var(--space-4xl) 0 var(--space-xxl);
  }
}

/* Large desktop: 1280px+ */
@media (min-width: 1280px) {
  .container {
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }

  .content-sidebar-wrap {
    grid-template-columns: 1fr 340px;
    gap: var(--space-3xl);
  }
}

/* Mobile-specific: below 768px */
@media (max-width: 767px) {
  :root {
    --header-height: 60px;
  }

  .container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  h1 {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
  }

  h2 {
    font-size: clamp(1.25rem, 4vw, 1.75rem);
  }

  .blog-hero {
    padding: var(--space-xxl) 0;
  }

  .blog-hero h1 {
    font-size: clamp(2rem, 6vw, 3rem);
  }

  .single-header {
    padding-top: var(--space-xl);
  }

  .single-header h1 {
    font-size: clamp(1.5rem, 5vw, 2.25rem);
  }

  .author-bio {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .featured-post .featured-image {
    aspect-ratio: 16 / 9;
  }

  .error-404 {
    padding: var(--space-xxl) var(--space-md);
  }

  .newsletter-form {
    flex-direction: column;
  }

  .newsletter-form button {
    width: 100%;
  }

  .back-to-top {
    bottom: var(--space-md);
    right: var(--space-md);
    width: 40px;
    height: 40px;
  }

  /* Sidebar stacks below content */
  .sidebar {
    position: static;
  }

  /* ToC collapsible on mobile */
  .toc-toggle {
    display: flex;
  }

  .toc-wrapper {
    position: static;
    max-height: none;
  }

  .toc-wrapper.collapsed .toc-list {
    display: none;
  }

  .toc-wrapper.collapsed h4 {
    display: none;
  }

  /* Footer grid collapses */
  .footer-newsletter {
    padding: var(--space-xl) var(--space-md);
  }
}

/* ==========================================================================
   Section 24: Reduced Motion
   ========================================================================== */

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