/* ==========================================================================
   Settings
   ========================================================================== */

:root {
  color-scheme: light;
  --font-sans: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: var(--monospace-font, 'Space Mono', 'Fira Code', SFMono-Regular, Menlo, monospace);

  --font-scale-900: clamp(3.25rem, 6vw, 4.25rem);
  --font-scale-800: clamp(2.75rem, 5vw, 3.25rem);
  --font-scale-700: clamp(2.25rem, 4vw, 2.75rem);
  --font-scale-600: clamp(1.9rem, 3.2vw, 2.25rem);
  --font-scale-500: clamp(1.5rem, 2.4vw, 1.9rem);
  --font-scale-400: 1.3rem;
  --font-scale-300: 1.15rem;
  --font-scale-200: 1rem;
  --font-scale-100: 0.95rem;

  --space-2xs: 0.25rem;
  --space-xs: 0.65rem;
  --space-sm: 0.85rem;
  --space-md: 1.1rem;
  --space-lg: 1.75rem;
  --space-xl: 2.25rem;
  --space-2xl: 3.25rem;
  --space-3xl: 4.5rem;

  --radius-sm: 0.35rem;
  --radius-md: 0.65rem;
  --radius-lg: 1.25rem;

  --shadow-sm: 4px 4px 0 rgba(15, 13, 9, 0.9);
  --shadow-md: 8px 8px 0 rgba(18, 16, 11, 0.9);
  --shadow-lg: 12px 12px 0 rgba(18, 16, 11, 0.85);

  --colour-surface-0: #f9f3e4;
  --colour-surface-1: #fffef5;
  --colour-surface-2: #ffe7b3;
  --colour-surface-3: #ffd37d;

  --colour-border: #1a1208;
  --colour-border-strong: #000;
  --colour-border-subtle: rgba(26, 18, 8, 0.25);

  --colour-text: #1a1208;
  --colour-text-muted: #4c3a1f;
  --colour-text-subtle: #6d5a34;
  --colour-text-disabled: #a38f64;

  --colour-accent: #ff4f6d;
  --colour-accent-strong: #ff1f45;
  --colour-accent-soft: rgba(255, 79, 109, 0.18);
  --colour-accent-subtle: rgba(255, 79, 109, 0.12);
  --colour-accent-hover: #ff0034;

  --colour-highlight: #2b50ff;
  --colour-highlight-strong: #1525c8;
  --colour-highlight-soft: rgba(43, 80, 255, 0.16);

  --colour-success: #0b8b48;
  --colour-warning: #f2a30f;
  --colour-error: #ff2355;
  --colour-info: #3478f6;

  --gradient-accent: linear-gradient(120deg, #fff4c7 0%, #ffd37d 45%, #ff4f6d 100%);
  --gradient-accent-soft: linear-gradient(120deg, rgba(255, 244, 199, 0.8) 0%, rgba(255, 211, 125, 0.6) 65%);
  --gradient-surface: linear-gradient(180deg, #fffef7 0%, #ffecc6 100%);
  --gradient-hero: linear-gradient(135deg, #ffefbe 0%, #ffd37d 50%, #ff4f6d 100%);

  --colour-code-bg: #fff3cc;
  --colour-code-border: #1a1208;
  --colour-code-text: #1a1208;

  --transition-base: 160ms cubic-bezier(0.39, 0.07, 0.23, 0.99);
  --transition-slow: 320ms cubic-bezier(0.39, 0.07, 0.23, 0.99);
  --transition-fast: 110ms cubic-bezier(0.39, 0.07, 0.23, 0.99);

  --brutal-border-width: 3px;
  --max-measure: 78ch;
}

html.theme-dark {
  color-scheme: dark;
  --colour-surface-0: #0d0c10;
  --colour-surface-1: #141318;
  --colour-surface-2: #1f1b27;
  --colour-surface-3: #2c2336;

  --colour-border: #f5f1e6;
  --colour-border-strong: #ffffff;
  --colour-border-subtle: rgba(245, 241, 230, 0.35);

  --colour-text: #f5f1e6;
  --colour-text-muted: #d6ccb6;
  --colour-text-subtle: #b9ae99;
  --colour-text-disabled: #807665;

  --colour-accent: #ff8aa5;
  --colour-accent-strong: #ff4f7e;
  --colour-accent-soft: rgba(255, 138, 165, 0.2);
  --colour-accent-subtle: rgba(255, 138, 165, 0.12);
  --colour-accent-hover: #ff2b64;

  --colour-highlight: #7f98ff;
  --colour-highlight-strong: #536ffc;
  --colour-highlight-soft: rgba(127, 152, 255, 0.25);

  --colour-code-bg: #1f1b27;
  --colour-code-border: #f5f1e6;
  --colour-code-text: #f5f1e6;

  --gradient-accent: linear-gradient(125deg, #282135 0%, #ff4f7e 100%);
  --gradient-accent-soft: linear-gradient(125deg, rgba(40, 33, 53, 0.8) 0%, rgba(255, 79, 126, 0.4) 100%);
  --gradient-surface: linear-gradient(180deg, #18131f 0%, #2c2336 100%);
  --gradient-hero: linear-gradient(135deg, rgba(127, 152, 255, 0.25) 0%, rgba(255, 79, 126, 0.35) 100%);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --colour-border: rgba(15, 23, 42, 0.24);
    --colour-border-strong: rgba(15, 23, 42, 0.4);
    --colour-text-muted: #3d4554;
  }

  html.theme-dark {
    --colour-border: rgba(148, 163, 184, 0.32);
    --colour-border-strong: rgba(148, 163, 184, 0.48);
    --colour-text-muted: #cbd5e1;
  }
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behaviour: auto !important;
  }
  
  :root {
    --transition-base: 0ms;
    --transition-slow: 0ms;
    --transition-fast: 0ms;
  }
}

/* ==========================================================================
   Base & Typography
   ========================================================================== */

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  background: var(--colour-surface-0);
  color: var(--colour-text);
  scroll-behavior: smooth;
  /* Optimise font rendering */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
    margin: 0;
  background: var(--colour-surface-0);
  color: var(--colour-text);
  line-height: 1.65;
  font-size: var(--font-scale-300);
}

/* Enhanced text selection */
::selection {
  background: var(--colour-accent-soft);
  color: var(--colour-text);
}

::-moz-selection {
  background: var(--colour-accent-soft);
  color: var(--colour-text);
}

/* Improve focus visibility for selected text */
::selection:focus {
  background: var(--colour-accent);
  color: #fff;
}

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

img {
  height: auto;
}

a {
  color: var(--colour-accent);
    text-decoration: none;
  transition: color var(--transition-base), background var(--transition-base);
}

a:hover,
a:focus-visible {
  color: var(--colour-accent-strong);
}

p {
  margin: 0 0 var(--space-lg);
}

ul, ol {
  margin: 0 0 var(--space-lg);
  padding-left: 1.5rem;
}

li + li {
  margin-top: var(--space-xs);
}

strong {
  font-weight: 600;
}

/* Enhanced heading typography with improved spacing */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.15;
  color: var(--colour-text);
  margin: 0 0 var(--space-md);
  letter-spacing: -0.02em;
}

h1 { 
  font-size: var(--font-scale-800);
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  margin-top: var(--space-xl);
}

h2 { 
  font-size: var(--font-scale-700);
  line-height: 1.15;
  margin-bottom: var(--space-md);
  margin-top: var(--space-2xl);
}

h3 { 
  font-size: var(--font-scale-600);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
  margin-top: var(--space-xl);
}

h4 { 
  font-size: var(--font-scale-500);
  line-height: 1.25;
  margin-bottom: var(--space-sm);
  margin-top: var(--space-lg);
}

h5 { 
  font-size: var(--font-scale-400);
  line-height: 1.3;
  margin-bottom: var(--space-xs);
  margin-top: var(--space-md);
}

h6 { 
  font-size: var(--font-scale-300);
  line-height: 1.35;
  margin-bottom: var(--space-xs);
  margin-top: var(--space-md);
}

/* First heading should have no top margin */
h1:first-child,
h2:first-child,
h3:first-child,
h4:first-child,
h5:first-child,
h6:first-child {
  margin-top: 0;
}

code, pre, kbd, samp {
  font-family: var(--font-mono);
  font-feature-settings: "liga" 1, "calt" 1;
}

pre {
  background: var(--colour-code-bg);
  border: 1px solid var(--colour-code-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
    overflow-x: auto;
    line-height: 1.6;
  margin: 0 0 var(--space-xl);
  font-size: var(--font-scale-200);
  color: var(--colour-code-text);
}

pre code {
  background: transparent;
    padding: 0;
  font-size: inherit;
  color: inherit;
}

code {
  background: var(--colour-accent-soft);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 0.15em 0.45em;
  font-size: 0.9em;
  color: var(--colour-code-text);
}

/* Enhanced code blocks in articles */
.article__content pre {
  margin: var(--space-xl) 0;
  max-width: 100%;
  overflow-x: auto;
  position: relative;
}

.article__content code {
  font-size: 0.9em;
}

.article__content pre code {
  display: block;
  padding: 0;
  font-size: var(--font-scale-200);
  line-height: 1.6;
  color: inherit;
}

/* Code block enhancements */
.code-block {
  position: relative;
  margin: var(--space-xl) 0;
}

.code-block__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--colour-surface-2);
  border-bottom: 1px solid var(--colour-border);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.code-block__language {
  font-size: var(--font-scale-100);
  font-weight: 600;
  color: var(--colour-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.code-block__copy {
  background: transparent;
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-sm);
  padding: var(--space-2xs) var(--space-xs);
  font-size: var(--font-scale-100);
  color: var(--colour-text-muted);
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: inherit;
}

.code-block__copy:hover {
  background: var(--colour-surface-1);
  border-color: var(--colour-accent);
  color: var(--colour-accent);
}

.code-block__copy.copied {
  background: var(--colour-success-bg);
  border-color: var(--colour-success);
  color: var(--colour-success-text);
}

.code-block pre {
  margin: 0;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.code-block--with-header pre {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}

/* Line numbers for code blocks */
.code-block--with-lines {
  counter-reset: line-number;
}

.code-block--with-lines .code-line {
  counter-increment: line-number;
  display: block;
  padding-left: var(--space-2xl);
  position: relative;
}

.code-block--with-lines .code-line::before {
  content: counter(line-number);
  position: absolute;
  left: 0;
  width: var(--space-xl);
  text-align: right;
  padding-right: var(--space-md);
  color: var(--colour-text-subtle);
  font-variant-numeric: tabular-nums;
  user-select: none;
  border-right: 1px solid var(--colour-border);
  margin-right: var(--space-md);
}

blockquote {
  margin: var(--space-xl) 0;
  padding: var(--space-lg) var(--space-xl);
  border-left: 4px solid var(--colour-accent);
  background: var(--colour-surface-1);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
  font-style: italic;
  color: var(--colour-text-muted);
  line-height: 1.75;
}

blockquote::before {
  content: '"';
  font-size: 4rem;
  line-height: 1;
  color: var(--colour-accent-soft);
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  font-family: Georgia, serif;
}

blockquote p {
  margin: 0;
  padding-left: var(--space-xl);
}

blockquote cite {
  display: block;
  margin-top: var(--space-md);
  font-size: var(--font-scale-200);
  font-style: normal;
  color: var(--colour-text-subtle);
}

blockquote cite::before {
  content: '— ';
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) 0;
  background: var(--colour-surface-1);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

table caption {
  font-weight: 600;
  font-size: var(--font-scale-300);
  color: var(--colour-text);
  margin-bottom: var(--space-md);
  text-align: left;
}

th, td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--colour-border);
}

thead {
  background: var(--colour-surface-2);
  font-weight: 600;
}

thead th {
  color: var(--colour-text);
  font-size: var(--font-scale-200);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--font-scale-100);
}

tbody tr {
  transition: background var(--transition-base);
}

tbody tr:hover {
  background: var(--colour-surface-2);
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody td {
  font-size: var(--font-scale-200);
}

/* Responsive tables */
@media (max-width: 720px) {
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  thead {
    display: none;
  }
  
  tbody tr {
    display: block;
    margin-bottom: var(--space-md);
    border: 1px solid var(--colour-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
  }
  
  tbody td {
    display: block;
    text-align: right;
    padding: var(--space-xs) var(--space-sm);
    border-bottom: 1px solid var(--colour-border);
  }
  
  tbody td::before {
    content: attr(data-label) ': ';
    float: left;
    font-weight: 600;
    color: var(--colour-text-subtle);
  }
  
  tbody td:last-child {
    border-bottom: none;
  }
}

/* Enhanced lists */
ul, ol {
  margin: 0 0 var(--space-lg);
  padding-left: 1.75rem;
}

ul {
  list-style-type: disc;
}

ol {
  list-style-type: decimal;
}

li {
  margin: var(--space-xs) 0;
  line-height: 1.75;
}

li::marker {
  color: var(--colour-accent);
}

ul ul, ol ol, ul ol, ol ul {
  margin-top: var(--space-xs);
  margin-bottom: var(--space-xs);
}

/* Definition lists */
dl {
  margin: var(--space-lg) 0;
}

dt {
  font-weight: 600;
  color: var(--colour-text);
  margin-top: var(--space-md);
  margin-bottom: var(--space-2xs);
}

dt:first-child {
  margin-top: 0;
}

dd {
  margin: 0 0 var(--space-md) var(--space-lg);
  color: var(--colour-text-muted);
}

/* Content dividers */
hr {
  border: none;
  height: 1px;
  background: var(--colour-border);
  margin: var(--space-2xl) 0;
  position: relative;
}

hr::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 1px;
  background: var(--colour-accent);
}

/* Enhanced images */
.article__content img {
  border-radius: var(--radius-md);
  margin: var(--space-xl) auto;
  box-shadow: var(--shadow-md);
  display: block;
  max-width: 100%;
  height: auto;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  /* Performance: Use GPU acceleration for transforms */
  will-change: transform;
  /* Optimise image rendering */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.article__content img:hover {
  transform: scale(1.01);
  box-shadow: var(--shadow-lg);
}

/* Reset will-change when not hovering to avoid memory issues */
.article__content img:not(:hover) {
  will-change: auto;
}

.article__content figure {
  margin: var(--space-xl) 0;
  text-align: center;
}

.article__content figcaption {
  font-size: var(--font-scale-200);
  color: var(--colour-text-muted);
  text-align: center;
  margin-top: var(--space-sm);
  font-style: italic;
}

/* Footnotes */
.footnotes {
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 2px solid var(--colour-border);
}

.footnotes ol {
  font-size: var(--font-scale-200);
}

.footnotes li {
  margin-bottom: var(--space-md);
}

.footnotes a {
  word-break: break-word;
}

.footnote-ref {
  vertical-align: super;
  font-size: 0.75em;
  color: var(--colour-accent);
  text-decoration: none;
  margin-left: 0.2em;
}

.footnote-ref:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Layout primitives
   ========================================================================== */

.shell {
  width: min(1400px, calc(100% - 2 * var(--space-2xl)));
  margin: 0 auto;
  padding: 0 clamp(var(--space-md), 4vw, var(--space-3xl));
}

@media (max-width: 720px) {
  .shell {
    padding: 0 var(--space-lg);
  }
}

.stack {
    display: flex;
    flex-direction: column;
}

.stack--gap-sm > * + * { margin-top: var(--space-sm); }
.stack--gap-md > * + * { margin-top: var(--space-md); }
.stack--gap-lg > * + * { margin-top: var(--space-lg); }
.stack--gap-xl > * + * { margin-top: var(--space-xl); }
.stack--gap-2xl > * + * { margin-top: var(--space-2xl); }

/* Grid system */
.grid {
  display: grid;
  gap: var(--space-xl);
}

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

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

.grid--cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.grid--auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--auto-fill {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

/* Masonry layout option */
.masonry {
  column-count: 3;
  column-gap: var(--space-xl);
}

.masonry > * {
  break-inside: avoid;
  margin-bottom: var(--space-xl);
}

@media (max-width: 1024px) {
  .masonry {
    column-count: 2;
  }
}

@media (max-width: 720px) {
  .masonry {
    column-count: 1;
  }
}

/* Container utilities */
.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

.container--sm {
  max-width: 640px;
}

.container--md {
  max-width: 768px;
}

.container--lg {
  max-width: 1024px;
}

.container--xl {
  max-width: 1280px;
}

.container--full {
  max-width: 100%;
}

/* Flexbox utilities */
.flex {
  display: flex;
}

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

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

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

.flex--between {
  justify-content: space-between;
}

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

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-xl);
  border-radius: 999px;
    font-weight: 600;
  background: var(--colour-accent);
  color: #fff;
  border: 1px solid transparent;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
  position: relative;
  isolation: isolate;
  cursor: pointer;
  font-size: var(--font-scale-200);
  line-height: 1.5;
}

.btn:hover,
.btn:focus-visible {
  background: var(--colour-accent-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn:active {
  transform: translateY(0);
}

.btn--ghost {
  background: transparent;
  color: var(--colour-accent);
  border: 1px solid var(--colour-border);
  box-shadow: none;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: var(--colour-accent-soft);
  color: var(--colour-accent-strong);
}

/* Button variants */
.btn--icon {
  padding: var(--space-sm);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
}

.btn--icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.btn--small {
  padding: var(--space-2xs) var(--space-md);
  font-size: var(--font-scale-100);
}

.btn--large {
  padding: var(--space-md) var(--space-2xl);
  font-size: var(--font-scale-300);
}

/* Button loading state */
.btn--loading {
  pointer-events: none;
  position: relative;
  color: transparent;
}

.btn--loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1rem;
  height: 1rem;
  margin: -0.5rem 0 0 -0.5rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
}

.btn--ghost.btn--loading::after {
  border-color: rgba(69, 69, 255, 0.3);
  border-top-color: var(--colour-accent);
}

@keyframes btn-spin {
  to {
    transform: rotate(360deg);
  }
}

/* Button groups */
.btn-group {
  display: inline-flex;
  gap: var(--space-xs);
}

.btn-group .btn {
  border-radius: var(--radius-md);
}

.btn-group .btn:first-child {
  border-top-left-radius: 999px;
  border-bottom-left-radius: 999px;
}

.btn-group .btn:last-child {
  border-top-right-radius: 999px;
  border-bottom-right-radius: 999px;
}

.btn-group .btn:not(:first-child):not(:last-child) {
  border-radius: 0;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--font-scale-200);
  color: var(--colour-text-subtle);
  margin: 0;
}

.section-title {
  font-size: var(--font-scale-700);
  margin: 0;
}

.section-subtitle {
  max-width: 68ch;
  color: var(--colour-text-muted);
  margin: 0;
  line-height: 1.6;
}

.lead {
  font-size: var(--font-scale-400);
  line-height: 1.65;
  color: var(--colour-text-muted);
  margin: 0;
  max-width: 65ch;
}

.display {
  font-size: var(--font-scale-900);
  font-weight: 700;
  margin: 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
  z-index: 999;
  background: var(--colour-accent);
  color: #fff;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--font-scale-200);
  text-decoration: none;
  transition: left var(--transition-base), top var(--transition-base), width var(--transition-base), height var(--transition-base);
  box-shadow: var(--shadow-md);
}

.skip-link:focus {
  left: var(--space-xl);
  top: var(--space-xl);
  width: auto;
  height: auto;
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.site-main {
  padding: var(--space-3xl) 0 var(--space-3xl);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.global-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--colour-surface-0) 86%, transparent);
  border-bottom: 1px solid var(--colour-border);
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

.global-header.scrolled {
  box-shadow: var(--shadow-sm);
  background: color-mix(in srgb, var(--colour-surface-0) 92%, transparent);
}

.global-header__inner {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-md) 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-base);
}

.brand:hover {
  transform: scale(1.02);
}

.brand__mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.brand:hover .brand__mark {
  transform: rotate(5deg);
  box-shadow: var(--shadow-sm);
}

.brand__text {
  font-weight: 700;
  font-size: var(--font-scale-400);
}

.brand__descriptor {
  display: block;
  font-size: var(--font-scale-200);
  color: var(--colour-text-subtle);
}

.global-header__controls {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

.primary-nav {
  grid-column: 1 / -1;
    display: flex;
  justify-content: flex-end;
}

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

.primary-nav__item {
  position: relative;
}

.primary-nav__link {
  font-weight: 500;
  font-size: var(--font-scale-200);
  color: var(--colour-text-muted);
  position: relative;
    display: inline-flex;
  align-items: center;
  padding-bottom: 0.35rem;
  transition: color var(--transition-base);
}

.primary-nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.primary-nav__link:hover,
.primary-nav__link:focus-visible {
  color: var(--colour-text);
  outline: none;
}

.primary-nav__link:focus-visible {
  outline: 2px solid var(--colour-accent);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.primary-nav__link:hover::after,
.primary-nav__link:focus-visible::after,
.primary-nav__link[aria-current='page']::after {
  transform: scaleX(1);
}

.primary-nav__link[aria-current='page'] {
  color: var(--colour-text);
  font-weight: 600;
}

/* Breadcrumb navigation */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  list-style: none;
  margin: 0 0 var(--space-lg);
  padding: 0;
  font-size: var(--font-scale-200);
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  color: var(--colour-text-muted);
}

.breadcrumb__item:not(:last-child)::after {
  content: '/';
  margin-left: var(--space-xs);
  color: var(--colour-text-subtle);
}

.breadcrumb__link {
  color: var(--colour-text-muted);
  transition: color var(--transition-base);
}

.breadcrumb__link:hover,
.breadcrumb__link:focus-visible {
  color: var(--colour-accent);
}

.breadcrumb__item[aria-current='page'] {
  color: var(--colour-text);
  font-weight: 500;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 0.35rem;
  width: 44px;
  height: 44px;
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-sm);
  background: var(--colour-surface-1);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition-base), border-color var(--transition-base);
}

.nav-toggle:hover {
  background: var(--colour-surface-2);
  border-color: var(--colour-border-strong);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--colour-accent);
  outline-offset: 2px;
}

.nav-toggle__bar {
  width: 20px;
  height: 2px;
  background: var(--colour-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.is-open .nav-toggle__bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: 999px;
  border: 1px solid var(--colour-border);
  background: var(--colour-surface-1);
  cursor: pointer;
  font-size: var(--font-scale-200);
  color: var(--colour-text-muted);
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.theme-switch:hover {
  background: var(--colour-surface-2);
  border-color: var(--colour-border-strong);
}

.theme-switch:focus-visible {
  outline: 2px solid var(--colour-accent);
  outline-offset: 2px;
}

.theme-switch:active {
  transform: scale(0.95);
}

.theme-switch__icon {
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--colour-accent) 0%, transparent 60%);
  transition: transform var(--transition-base);
}

.theme-switch:hover .theme-switch__icon {
  transform: rotate(15deg);
}

/* ==========================================================================
   Search
   ========================================================================== */

.search-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
}

.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-3xl) var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  pointer-events: none;
}

.search-modal.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.search-modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.search-modal__content {
  position: relative;
  width: 100%;
  max-width: 600px;
  background: var(--colour-surface-1);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--colour-border);
  transform: translateY(-20px);
  transition: transform var(--transition-base);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  /* Performance: Optimise modal animations */
  will-change: transform;
}

.search-modal.is-open .search-modal__content {
  transform: translateY(0);
}

/* Reset will-change when modal is closed to avoid memory issues */
.search-modal:not(.is-open) .search-modal__content {
  will-change: auto;
}

.search-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--colour-border);
}

.search-modal__title {
  margin: 0;
  font-size: var(--font-scale-500);
  font-weight: 600;
  color: var(--colour-text);
}

.search-modal__close {
  background: transparent;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: var(--font-scale-600);
  color: var(--colour-text-muted);
  transition: background var(--transition-base), color var(--transition-base);
}

.search-modal__close:hover,
.search-modal__close:focus-visible {
  background: var(--colour-surface-2);
  color: var(--colour-text);
  outline: none;
}

.search-modal__close:focus-visible {
  outline: 2px solid var(--colour-accent);
  outline-offset: 2px;
}

.search-modal__body {
  padding: var(--space-xl);
  overflow-y: auto;
  flex: 1;
}

.search-input-wrapper {
  position: relative;
  margin-bottom: var(--space-lg);
}

.search-input {
  width: 100%;
  padding: var(--space-md) var(--space-lg) var(--space-md) 3rem;
  border: 2px solid var(--colour-border);
  border-radius: var(--radius-md);
  background: var(--colour-surface-1);
  color: var(--colour-text);
  font-size: var(--font-scale-300);
  font-family: inherit;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.search-input:focus {
  outline: none;
  border-color: var(--colour-accent);
  box-shadow: 0 0 0 3px var(--colour-accent-soft);
}

.search-input__icon {
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  font-size: var(--font-scale-300);
  color: var(--colour-text-subtle);
  pointer-events: none;
}

.search-hint {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
  font-size: var(--font-scale-100);
  color: var(--colour-text-subtle);
  flex-wrap: wrap;
}

.search-hint kbd {
  padding: 0.2rem 0.4rem;
  background: var(--colour-surface-2);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-scale-100);
  font-family: var(--font-mono);
  color: var(--colour-text);
}

.search-results {
  display: grid;
  gap: var(--space-md);
  max-height: 400px;
  overflow-y: auto;
}

.search-result {
  display: block;
  padding: var(--space-md);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  background: var(--colour-surface-1);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  text-decoration: none;
  cursor: pointer;
}

.search-result:hover,
.search-result:focus-visible,
.search-result.is-selected {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  border-color: var(--colour-accent);
  outline: none;
}

.search-result:focus-visible {
  outline: 2px solid var(--colour-accent);
  outline-offset: 2px;
}

.search-result__title {
  font-size: var(--font-scale-400);
  font-weight: 600;
  color: var(--colour-text);
  margin: 0 0 var(--space-xs);
  line-height: 1.3;
}

.search-result__title mark {
  background: var(--colour-accent-soft);
  color: var(--colour-accent-strong);
  padding: 0.1em 0.2em;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.search-result__meta {
  display: flex;
  gap: var(--space-xs);
  font-size: var(--font-scale-100);
  color: var(--colour-text-subtle);
  margin-bottom: var(--space-xs);
  flex-wrap: wrap;
}

.search-result__excerpt {
  font-size: var(--font-scale-200);
  color: var(--colour-text-muted);
  line-height: 1.5;
  margin: 0;
}

.search-result__excerpt mark {
  background: var(--colour-accent-soft);
  color: var(--colour-accent-strong);
  padding: 0.1em 0.2em;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.search-result__tags {
  display: flex;
  gap: var(--space-xs);
  margin-top: var(--space-xs);
  flex-wrap: wrap;
}

.search-result__tags span {
  font-size: var(--font-scale-100);
  color: var(--colour-text-subtle);
  background: var(--colour-surface-2);
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
}

.search-empty {
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
}

/* ==========================================================================
   Hero and Home sections
   ========================================================================== */

.home-hero {
  margin-bottom: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.home-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero);
  opacity: 0.5;
  z-index: 0;
  pointer-events: none;
}

.home-hero__inner {
  display: grid;
  gap: clamp(var(--space-2xl), 3vw, var(--space-3xl));
  grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  background: var(--colour-surface-1);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-2xl), 4vw, var(--space-3xl));
  border: 1px solid var(--colour-border);
  box-shadow: var(--shadow-md);
  position: relative;
  z-index: 1;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.home-hero__inner:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.home-hero__body {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.home-hero__body .lead {
  max-width: 60ch;
}

.home-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--colour-surface-2);
  border: 1px solid var(--colour-border-subtle);
  font-size: var(--font-scale-100);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--colour-text-muted);
}

.hero-note {
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--colour-surface-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.hero-note__label {
  font-size: var(--font-scale-100);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--colour-text-subtle);
}

.hero-note__value {
  margin: 0;
  font-size: var(--font-scale-300);
  color: var(--colour-text);
}

.hero-focus {
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  background: var(--colour-surface-1);
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: var(--space-md);
}

.hero-focus__heading {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  justify-content: space-between;
  align-items: center;
}

.hero-focus__label {
  margin: 0;
  font-size: var(--font-scale-200);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-focus__hint {
  font-size: var(--font-scale-200);
  color: var(--colour-text-subtle);
}

.hero-focus__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.hero-focus__item {
  border: 1px solid var(--colour-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  background: var(--colour-surface-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
  min-height: 130px;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.hero-focus__item:hover {
  transform: translateY(-2px);
  border-color: var(--colour-accent);
}

.hero-focus__title {
  font-size: var(--font-scale-200);
  font-weight: 600;
}

.hero-focus__meta {
  font-size: var(--font-scale-100);
  color: var(--colour-text-subtle);
}

.home-hero__panel {
  position: relative;
}

.hero-panel {
  position: relative;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-2xl), 4vw, var(--space-4xl));
  color: #fff;
  overflow: hidden;
  min-height: 100%;
}

.hero-panel::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,0.25), transparent 65%);
}

.hero-panel__header,
.hero-panel__stats,
.hero-panel__spotlight {
  position: relative;
  z-index: 1;
}

.hero-panel__header {
  display: grid;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
}

.hero-panel__eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--font-scale-100);
  opacity: 0.8;
}

.hero-panel__title {
  margin: 0;
  font-size: var(--font-scale-500);
  max-width: 32ch;
}

.hero-panel__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

.hero-panel__stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.hero-panel__stat-label {
  font-size: var(--font-scale-100);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.8;
}

.hero-panel__stat-value {
  font-size: var(--font-scale-700);
  font-weight: 700;
  line-height: 1;
}

.hero-panel__divider {
  margin: var(--space-2xl) 0;
  height: 1px;
  width: 100%;
  background: rgba(255,255,255,0.2);
}

.hero-panel__spotlight {
  display: grid;
  gap: var(--space-sm);
  background: rgba(15, 23, 42, 0.35);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.hero-spotlight__eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--font-scale-100);
  opacity: 0.85;
}

.hero-spotlight__title {
  margin: 0;
  font-size: var(--font-scale-400);
  font-weight: 600;
}

.hero-spotlight__placeholder {
  margin: 0;
  font-size: var(--font-scale-200);
  color: #fff;
  opacity: 0.85;
}

.hero-spotlight__link {
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
}

.hero-spotlight__link::after {
  content: '↗';
  font-size: 0.9em;
}

.hero-spotlight__link:hover {
  text-decoration: underline;
}

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

.section-header {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--space-xl);
}

.section-header__cta {
  font-weight: 600;
  color: var(--colour-accent);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
}

.section-header__cta::after {
  content: '↗';
  font-size: 0.85em;
}

.focus-grid,
.project-grid {
  display: grid;
  gap: clamp(var(--space-lg), 3vw, var(--space-2xl));
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

.post-grid {
  display: grid;
  gap: clamp(var(--space-lg), 3vw, var(--space-2xl));
  grid-template-columns: repeat(6, 1fr);
}

/* Enhanced grid options */
.post-grid--dense {
  grid-auto-flow: dense;
}

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

.post-grid--spacious {
  gap: var(--space-2xl);
}

.section-footer {
  margin-top: var(--space-xl);
}

.topic-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.topic-pill {
  flex: 0 0 auto;
}

.topic-pill a {
  display: flex;
        flex-direction: column;
  gap: var(--space-2xs);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--colour-border);
  border-radius: 999px;
  background: var(--colour-surface-1);
  font-weight: 500;
  color: var(--colour-text);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.topic-pill a:hover,
.topic-pill a:focus-visible {
  transform: translateY(-2px);
  border-color: var(--colour-accent);
}

.topic-pill__name {
  font-size: var(--font-scale-200);
}

.topic-pill__count {
  font-size: var(--font-scale-100);
  color: var(--colour-text-subtle);
}

.focus-card {
  position: relative;
  padding: var(--space-2xl);
  border-radius: var(--radius-lg);
  background: var(--colour-surface-1);
  border: 1px solid var(--colour-border);
  box-shadow: var(--shadow-sm);
  display: grid;
  gap: var(--space-lg);
}

.focus-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid var(--colour-accent-soft);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.focus-card:hover::after {
  opacity: 1;
}

.focus-card__icon {
  width: 3rem;
  height: 3rem;
  border-radius: 0.85rem;
  background: var(--gradient-accent-soft);
  display: grid;
  place-items: center;
  font-size: 1.35rem;
}

.focus-card__action {
  font-weight: 600;
  color: var(--colour-accent);
  text-decoration: none;
}

.latest-list {
  display: grid;
  gap: var(--space-xl);
}

.latest-card {
  display: grid;
  grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
  gap: var(--space-xl);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-lg);
  background: var(--colour-surface-1);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.latest-card__media img,
.latest-card__placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.latest-card__placeholder {
  background: var(--colour-surface-2);
}

.latest-card__meta {
  display: flex;
  gap: var(--space-xs);
  font-size: var(--font-scale-200);
  color: var(--colour-text-subtle);
  margin: 0 0 var(--space-xs);
}

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

.content-pill {
  border-radius: 999px;
  border: 1px solid var(--colour-border);
  padding: 0.2rem 0.75rem;
  background: var(--colour-surface-2);
}

.content-pill a {
  text-decoration: none;
  font-size: var(--font-scale-100);
  color: var(--colour-text-subtle);
}

.latest-card__cta {
  position: absolute;
  inset: auto var(--space-xl) var(--space-xl) auto;
  font-weight: 600;
  text-decoration: none;
  color: var(--colour-accent);
}

.resource-strip {
  display: grid;
  gap: var(--space-md);
  background: var(--gradient-accent-soft);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.resource-card {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  background: var(--colour-surface-1);
  border: 1px solid var(--colour-border);
}

.resource-card__eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: var(--font-scale-100);
  color: var(--colour-text-subtle);
}

.resource-card__description {
  margin: var(--space-2xs) 0 0;
  color: var(--colour-text-muted);
}

.resource-card__cta {
  align-self: center;
  font-weight: 600;
  color: var(--colour-accent);
  text-decoration: none;
}

@media (max-width: 900px) {
  .home-hero__inner {
    grid-template-columns: 1fr;
  }

  .latest-card {
    grid-template-columns: 1fr;
  }

  .latest-card__media img,
  .latest-card__placeholder {
    height: 220px;
  }
}

@media (max-width: 600px) {
  .hero-focus__list {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    padding: var(--space-2xl);
  }

  .focus-card,
  .resource-card {
    padding: var(--space-xl);
  }
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: var(--colour-surface-1);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  height: 100%;
  position: relative;
  overflow: hidden;
  /* Performance: Use transform for better animation performance */
  will-change: transform;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.card:hover,
.card:focus-within {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--colour-border-strong);
}

.card:hover::before,
.card:focus-within::before {
  transform: scaleX(1);
}

/* Card loading skeleton */
.card-skeleton {
  animation: skeleton-loading 1.5s ease-in-out infinite;
  background: linear-gradient(
    90deg,
    var(--colour-surface-2) 0%,
    var(--colour-surface-3) 50%,
    var(--colour-surface-2) 100%
  );
  background-size: 200% 100%;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.post-card {
  position: relative;
  /* Performance: Optimise compositing */
  contain: layout style paint;
}

.post-card__header {
  position: relative;
}

.post-card__featured-image {
  width: 100%;
  height: clamp(200px, 22vw, 240px);
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  background: var(--colour-surface-2);
  transition: transform var(--transition-base), opacity var(--transition-base);
  /* Performance: Optimise image rendering */
  will-change: transform;
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.post-card:hover .post-card__featured-image {
  transform: scale(1.02);
}

/* Reset will-change when not hovering */
.post-card:not(:hover) .post-card__featured-image {
  will-change: auto;
}

.post-card__meta {
  display: flex;
  gap: var(--space-xs);
  font-size: var(--font-scale-200);
  color: var(--colour-text-subtle);
  margin: 0;
  flex-wrap: wrap;
  align-items: center;
}

.post-card__meta time {
  font-variant-numeric: tabular-nums;
}

.post-card__title {
  font-size: var(--font-scale-500);
  margin: 0;
  line-height: 1.25;
  max-width: 34ch;
}

.post-card__title a {
  color: inherit;
  transition: color var(--transition-base);
}

.post-card__title a:hover,
.post-card__title a:focus-visible {
  color: var(--colour-accent);
}

.post-card__excerpt {
  margin: 0;
  color: var(--colour-text-muted);
  line-height: 1.7;
  font-size: var(--font-scale-200);
  max-width: 65ch;
}

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

.post-card__tags a {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--colour-accent-soft);
  color: var(--colour-accent-strong);
  font-size: var(--font-scale-100);
  transition: background var(--transition-base), transform var(--transition-base);
}

.post-card__tags a:hover,
.post-card__tags a:focus-visible {
  background: var(--colour-accent);
  color: #fff;
  transform: translateY(-1px);
}

.post-card__footer {
  margin-top: auto;
  padding-top: var(--space-md);
}

.post-card__cta {
  align-self: flex-start;
  font-weight: 600;
  font-size: var(--font-scale-200);
  color: var(--colour-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  transition: gap var(--transition-base), transform var(--transition-base);
}

.post-card__cta::after {
  content: '→';
  transition: transform var(--transition-base);
}

.post-card:hover .post-card__cta {
  gap: var(--space-xs);
}

.post-card:hover .post-card__cta::after {
  transform: translateX(2px);
}

.project-card {
  padding: 0;
  overflow: hidden;
}

.project-card__media img {
    width: 100%;
  height: 220px;
  object-fit: cover;
}

.project-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-xl);
}

.project-card__excerpt {
  margin: 0;
  color: var(--colour-text-muted);
}

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

.project-card__tags li {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--colour-accent-soft);
  font-size: var(--font-scale-100);
  color: var(--colour-accent-strong);
}

.project-card__cta {
  color: var(--colour-accent);
  font-weight: 600;
}

/* ==========================================================================
   Article Layout
   ========================================================================== */

.article {
  display: grid;
  gap: var(--space-2xl);
  max-width: 1240px;
  margin: 0 auto;
}

.article__header {
  background: var(--colour-surface-1);
  border-radius: var(--radius-lg);
  border: 1px solid var(--colour-border);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.article__title {
  font-size: var(--font-scale-800);
  margin: 0;
  line-height: 1.1;
  color: var(--colour-text);
}

.article__lede {
  margin: var(--space-md) 0 0;
  font-size: var(--font-scale-400);
  color: var(--colour-text-muted);
  line-height: 1.65;
}

.article__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-lg) 0 0;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--colour-border);
}

.article__meta dt {
  font-size: var(--font-scale-200);
  color: var(--colour-text-subtle);
  margin-bottom: var(--space-2xs);
  font-weight: 500;
}

.article__meta dd {
  margin: 0;
  font-weight: 600;
  color: var(--colour-text);
}

.article__meta time {
  font-variant-numeric: tabular-nums;
}

.article__layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: var(--space-2xl);
  align-items: start;
}

.article__sidebar {
  position: sticky;
  top: 6rem;
  align-self: start;
  display: grid;
  gap: var(--space-xl);
}

.article-toc {
  background: var(--colour-surface-1);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: sticky;
  top: 6rem;
}

.article-toc__title {
  font-size: var(--font-scale-300);
  margin: 0 0 var(--space-sm);
  font-weight: 600;
  color: var(--colour-text);
}

.article-toc__body ul {
  list-style: none;
  margin: 0;
  padding-left: 0;
  display: grid;
  gap: var(--space-xs);
}

.article-toc__body li {
  position: relative;
}

.article-toc__body a {
  color: var(--colour-text-muted);
  font-size: var(--font-scale-200);
  display: block;
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition-base), color var(--transition-base), transform var(--transition-base);
  text-decoration: none;
}

.article-toc__body a:hover,
.article-toc__body a:focus-visible {
  background: var(--colour-surface-2);
  color: var(--colour-accent);
  transform: translateX(4px);
}

.article-toc__body a.active {
  background: var(--colour-accent-soft);
  color: var(--colour-accent-strong);
  font-weight: 500;
}

.article-toc__body li li {
  margin-left: var(--space-md);
  padding-left: var(--space-sm);
  border-left: 2px solid var(--colour-border);
}

.article__content {
  background: var(--colour-surface-1);
  border-radius: var(--radius-lg);
  border: 1px solid var(--colour-border);
  padding: var(--space-3xl) clamp(var(--space-2xl), 5vw, var(--space-4xl));
  box-shadow: var(--shadow-sm);
  min-width: 0;
}

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

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

.article__content h2 { 
  margin-top: var(--space-2xl);
  scroll-margin-top: var(--space-xl);
}

.article__content h3 { 
  margin-top: var(--space-xl);
  scroll-margin-top: var(--space-lg);
}

.article__content h4 { 
  margin-top: var(--space-xl);
  scroll-margin-top: var(--space-lg);
}

.article__content p {
  max-width: 78ch;
  line-height: 1.75;
}

.article__content img {
  border-radius: var(--radius-md);
  margin: var(--space-xl) 0;
  box-shadow: var(--shadow-sm);
}

.article__content figure {
  margin: var(--space-xl) 0;
}

.article__content figcaption {
  font-size: var(--font-scale-200);
  color: var(--colour-text-muted);
  text-align: center;
  margin-top: var(--space-sm);
}

.article__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  padding: var(--space-lg);
  background: var(--colour-surface-1);
  border-radius: var(--radius-md);
  border: 1px solid var(--colour-border);
}

.article__tags a {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--colour-accent-soft);
  color: var(--colour-accent-strong);
  font-size: var(--font-scale-200);
  transition: background var(--transition-base), transform var(--transition-base);
}

.article__tags a:hover,
.article__tags a:focus-visible {
  background: var(--colour-accent);
  color: #fff;
  transform: translateY(-1px);
}

.article__pagination {
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.article__pagination a {
  display: block;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  background: var(--colour-surface-1);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  text-decoration: none;
}

.article__pagination a:hover,
.article__pagination a:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--colour-accent);
  outline: none;
}

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

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

.article__pagination-label {
    display: block;
  font-size: var(--font-scale-200);
  color: var(--colour-text-subtle);
  margin-bottom: var(--space-2xs);
  font-weight: 500;
}

.article__pagination-title {
  font-weight: 600;
  color: var(--colour-text);
  font-size: var(--font-scale-300);
}

.article__related {
  margin-top: var(--space-3xl);
  padding-top: var(--space-2xl);
  border-top: 2px solid var(--colour-border);
}

.article__related .section-title {
  margin-bottom: var(--space-lg);
}

.article__related .post-grid {
  margin-top: var(--space-xl);
}

.article-share {
  background: var(--colour-surface-1);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: sticky;
  top: calc(6rem + var(--space-2xl) + 200px);
}

.article-share__title {
  margin: 0 0 var(--space-sm);
  font-size: var(--font-scale-300);
  font-weight: 600;
  color: var(--colour-text);
}

.article-share ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-xs);
}

.article-share a {
  color: var(--colour-accent);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition-base), transform var(--transition-base), color var(--transition-base);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-scale-200);
}

.article-share a:hover,
.article-share a:focus-visible {
  background: var(--colour-surface-2);
  transform: translateX(4px);
  outline: none;
  color: var(--colour-accent-strong);
}

.article-share a:focus-visible {
  outline: 2px solid var(--colour-accent);
  outline-offset: 2px;
}

/* Social share button variants */
.article-share__button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--colour-border);
  background: var(--colour-surface-1);
  color: var(--colour-text);
  font-weight: 500;
  font-size: var(--font-scale-200);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.article-share__button:hover,
.article-share__button:focus-visible {
  background: var(--colour-accent-soft);
  border-color: var(--colour-accent);
  color: var(--colour-accent-strong);
  transform: translateY(-1px);
  outline: none;
}

.article-share__button--twitter {
  border-color: rgba(29, 161, 242, 0.3);
}

.article-share__button--twitter:hover {
  background: rgba(29, 161, 242, 0.1);
  border-color: rgba(29, 161, 242, 0.5);
  color: #1da1f2;
}

.article-share__button--linkedin {
  border-color: rgba(0, 119, 181, 0.3);
}

.article-share__button--linkedin:hover {
  background: rgba(0, 119, 181, 0.1);
  border-color: rgba(0, 119, 181, 0.5);
  color: #0077b5;
}

.article-share__button--copy {
  position: relative;
}

.article-share__button--copy.copied {
  background: var(--colour-success-bg);
  border-color: var(--colour-success);
  color: var(--colour-success-text);
}

.article-share__button--copy.copied::after {
  content: 'Copied!';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: var(--space-xs);
  padding: var(--space-2xs) var(--space-xs);
  background: var(--colour-surface-2);
  border-radius: var(--radius-sm);
  font-size: var(--font-scale-100);
  white-space: nowrap;
  opacity: 0;
  animation: fade-in-out 2s ease;
}

@keyframes fade-in-out {
  0%, 100% { opacity: 0; transform: translateX(-50%) translateY(-4px); }
  10%, 90% { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Reading progress indicator */
.article-reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--colour-surface-2);
  z-index: 99;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.article-reading-progress.is-active {
  opacity: 1;
}

.article-reading-progress__bar {
  height: 100%;
  width: 0%;
  background: var(--gradient-accent);
  transition: width 0.1s linear;
}

/* ==========================================================================
   Listing & Taxonomy
   ========================================================================== */

.listing__inner {
  display: grid;
  gap: var(--space-2xl);
}

.listing__header {
  align-items: flex-start;
}

.pagination {
  display: grid;
  grid-template-columns: repeat(3, max-content);
  justify-content: center;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  border: 1px solid var(--colour-border);
  background: var(--colour-surface-1);
  box-shadow: var(--shadow-sm);
}

.pagination__link {
  font-weight: 600;
  color: var(--colour-accent);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  transition: background var(--transition-base), transform var(--transition-base);
  text-decoration: none;
}

.pagination__link:hover,
.pagination__link:focus-visible {
  background: var(--colour-accent-soft);
  transform: translateY(-1px);
  outline: none;
}

.pagination__link.is-disabled {
  color: var(--colour-text-subtle);
  cursor: not-allowed;
  opacity: 0.5;
}

.pagination__link.is-disabled:hover {
  background: transparent;
  transform: none;
}

.pagination__status {
  font-size: var(--font-scale-200);
  color: var(--colour-text-subtle);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Pagination loading state */
.pagination--loading {
  opacity: 0.6;
  pointer-events: none;
}

.pagination--loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1rem;
  height: 1rem;
  margin: -0.5rem 0 0 -0.5rem;
  border: 2px solid var(--colour-border);
  border-top-color: var(--colour-accent);
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
}

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

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--colour-border);
  background: var(--colour-surface-1);
  transition: border-color var(--transition-base), transform var(--transition-base);
}

.tag-chip:hover,
.tag-chip:focus-visible {
  border-color: var(--colour-accent);
  transform: translateY(-2px);
}

.tag-chip__name {
  font-weight: 500;
}

.tag-chip__count {
  font-size: var(--font-scale-100);
  color: var(--colour-text-subtle);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.global-footer {
  padding: var(--space-3xl) 0 var(--space-2xl);
  border-top: 2px solid var(--colour-border);
  background: var(--colour-surface-1);
  margin-top: var(--space-3xl);
}

.global-footer__inner {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: start;
}

.global-footer__meta {
  grid-column: 1 / -1;
}

@media (min-width: 720px) {
  .global-footer__meta {
    grid-column: auto;
  }
}

.global-footer__title {
    font-weight: 600;
  margin: 0 0 var(--space-xs);
  font-size: var(--font-scale-400);
  color: var(--colour-text);
}

.global-footer__summary {
  margin: 0;
  color: var(--colour-text-muted);
  line-height: 1.6;
  max-width: 40ch;
}

.global-footer__legal {
  grid-column: 1 / -1;
}

@media (min-width: 720px) {
  .global-footer__legal {
    grid-column: auto;
  }
}

.global-footer__legal p {
  margin: 0 0 var(--space-xs);
  color: var(--colour-text-subtle);
  font-size: var(--font-scale-200);
  line-height: 1.6;
}

.global-footer__copyright {
  font-size: var(--font-scale-200);
}

.global-footer__social {
  grid-column: 1 / -1;
}

@media (min-width: 720px) {
  .global-footer__social {
    grid-column: auto;
  }
}

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

.global-footer__social-link {
  display: inline-flex;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--colour-border);
  background: var(--colour-surface-0);
  color: var(--colour-text);
  transition: border-color var(--transition-base), transform var(--transition-base), background var(--transition-base);
  text-decoration: none;
}

.global-footer__social-link:hover,
.global-footer__social-link:focus-visible {
  border-color: var(--colour-accent);
  transform: translateY(-3px);
  background: var(--colour-accent-soft);
  outline: none;
}

.global-footer__social-link:focus-visible {
  outline: 2px solid var(--colour-accent);
  outline-offset: 2px;
}

.global-footer__social-icon {
  font-size: 1.25rem;
}

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

/* ==========================================================================
   Utilities & Misc
   ========================================================================== */

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 4px;
  width: 0;
  background: var(--gradient-accent);
  z-index: 200;
  /* Performance: Use transform for smooth updates */
  will-change: width;
  transform: translateZ(0);
}

.is-open {
  display: block;
}

/* ==========================================================================
   Tooltip & Popover
   ========================================================================== */

.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip__trigger {
  cursor: help;
}

.tooltip__content {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  background: var(--colour-surface-2);
  color: var(--colour-text);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-sm);
  font-size: var(--font-scale-100);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: 1000;
  box-shadow: var(--shadow-md);
}

.tooltip__content::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--colour-surface-2);
}

.tooltip:hover .tooltip__content,
.tooltip:focus-within .tooltip__content {
  opacity: 1;
  transform: translateX(-50%) translateY(-2px);
}

/* Popover component */
.popover {
  position: relative;
  display: inline-block;
}

.popover__trigger {
  cursor: pointer;
}

.popover__content {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-bottom: var(--space-xs);
  min-width: 200px;
  max-width: 300px;
  padding: var(--space-md);
  background: var(--colour-surface-1);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: 1000;
}

.popover.popover--open .popover__content {
  opacity: 1;
  transform: translateX(-50%) translateY(-4px);
  pointer-events: auto;
}

.popover__content::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--colour-surface-1);
}

/* ==========================================================================
   Form Elements
   ========================================================================== */

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

.form-label {
  display: block;
  font-weight: 500;
  font-size: var(--font-scale-200);
  color: var(--colour-text);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--colour-border);
  border-radius: var(--radius-md);
  background: var(--colour-surface-1);
  color: var(--colour-text);
  font-size: var(--font-scale-200);
  font-family: inherit;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--colour-accent);
  box-shadow: 0 0 0 3px var(--colour-accent-soft);
}

.form-input:invalid:not(:focus):not(:placeholder-shown),
.form-textarea:invalid:not(:focus):not(:placeholder-shown) {
  border-color: var(--colour-error);
}

.form-input:valid:not(:focus):not(:placeholder-shown),
.form-textarea:valid:not(:focus):not(:placeholder-shown) {
  border-color: var(--colour-success);
}

.form-help {
  display: block;
  font-size: var(--font-scale-100);
  color: var(--colour-text-muted);
  margin-top: var(--space-2xs);
}

.form-error {
  display: block;
  font-size: var(--font-scale-100);
  color: var(--colour-error);
  margin-top: var(--space-2xs);
}

/* ==========================================================================
   Empty States
   ========================================================================== */

.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
  color: var(--colour-text-muted);
}

.empty-state__icon {
  width: 4rem;
  height: 4rem;
  margin: 0 auto var(--space-lg);
  opacity: 0.5;
}

.empty-state__title {
  font-size: var(--font-scale-500);
  color: var(--colour-text);
  margin-bottom: var(--space-sm);
}

.empty-state__message {
  font-size: var(--font-scale-300);
  margin-bottom: var(--space-lg);
  max-width: 40ch;
  margin-left: auto;
  margin-right: auto;
}

.empty-state__action {
  margin-top: var(--space-lg);
}

/* Badge component enhancements */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: var(--font-scale-100);
  font-weight: 500;
  line-height: 1.4;
}

.badge--success {
  background: var(--colour-success-bg);
  color: var(--colour-success-text);
  border: 1px solid var(--colour-success-soft);
}

.badge--warning {
  background: var(--colour-warning-bg);
  color: var(--colour-warning-text);
  border: 1px solid var(--colour-warning-soft);
}

.badge--error {
  background: var(--colour-error-bg);
  color: var(--colour-error-text);
  border: 1px solid var(--colour-error-soft);
}

.badge--info {
  background: var(--colour-info-bg);
  color: var(--colour-info-text);
  border: 1px solid var(--colour-info-soft);
}

/* Chip component (enhanced tag styling) */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--colour-border);
  background: var(--colour-surface-1);
  font-weight: 500;
  font-size: var(--font-scale-200);
  color: var(--colour-text);
  transition: border-color var(--transition-base), transform var(--transition-base), background var(--transition-base);
}

.chip:hover,
.chip:focus-visible {
  border-color: var(--colour-accent);
  transform: translateY(-2px);
  background: var(--colour-surface-2);
}

.chip--selected {
  border-color: var(--colour-accent);
  background: var(--colour-accent-soft);
  color: var(--colour-accent-strong);
}

/* Alert component */
.alert {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  margin: 0 0 var(--space-lg);
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.alert--success {
  background: var(--colour-success-bg);
  color: var(--colour-success-text);
  border-color: var(--colour-success-soft);
}

.alert--warning {
  background: var(--colour-warning-bg);
  color: var(--colour-warning-text);
  border-color: var(--colour-warning-soft);
}

.alert--error {
  background: var(--colour-error-bg);
  color: var(--colour-error-text);
  border-color: var(--colour-error-soft);
}

.alert--info {
  background: var(--colour-info-bg);
  color: var(--colour-info-text);
  border-color: var(--colour-info-soft);
}

.alert__icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.125rem;
}

.alert__content {
  flex: 1;
}

.alert__title {
  font-weight: 600;
  margin: 0 0 var(--space-2xs);
  font-size: var(--font-scale-200);
}

.alert__message {
  margin: 0;
  font-size: var(--font-scale-200);
}

/* ==========================================================================
   Responsive adjustments
   ========================================================================== */

@media (max-width: 1024px) {
  .global-header__inner {
    grid-template-columns: 1fr auto;
  }

  .primary-nav {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

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

@media (max-width: 900px) {
  .global-header__inner {
    grid-template-columns: auto 1fr;
    align-items: center;
  }

  .global-header__controls {
    order: 2;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    position: absolute;
    inset: calc(100% + 1px) var(--space-xl) auto;
    border: 1px solid var(--colour-border);
    border-radius: var(--radius-md);
    background: var(--colour-surface-1);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    transition: max-height var(--transition-slow), opacity var(--transition-base), visibility var(--transition-base);
  }

  .primary-nav.is-open {
    max-height: 440px;
    opacity: 1;
    visibility: visible;
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-sm) 0;
  }

  .primary-nav__link {
    padding: var(--space-sm) var(--space-xl);
    width: 100%;
    border-radius: var(--radius-sm);
    margin: 0 var(--space-xs);
    transition: background var(--transition-base), color var(--transition-base);
  }

  .primary-nav__link:hover,
  .primary-nav__link:focus-visible {
    background: var(--colour-surface-2);
  }

  .primary-nav__link::after {
    display: none;
  }

  .primary-nav__link[aria-current='page'] {
    background: var(--colour-accent-soft);
    color: var(--colour-accent-strong);
  }

  .article__layout {
    grid-template-columns: 1fr;
  }

  .article__sidebar {
    position: static;
    order: -1;
  }
}

@media (max-width: 720px) {
  .shell {
    width: min(100% - var(--space-lg), 100%);
  }

  .global-header__inner {
    padding: var(--space-sm) 0;
  }

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

  .home-hero__inner {
    padding: var(--space-2xl);
  }

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

  .home-hero__meta dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card {
    padding: var(--space-lg);
  }

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

  .article__meta {
    grid-template-columns: 1fr 1fr;
  }

  .pagination {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  /* Responsive typography adjustments for mobile */
  html {
    font-size: 15px;
  }

  h1 {
    font-size: var(--font-scale-700);
    margin-top: var(--space-lg);
  }

  h2 {
    font-size: var(--font-scale-600);
    margin-top: var(--space-xl);
  }

  h3 {
    font-size: var(--font-scale-500);
    margin-top: var(--space-lg);
  }

  h4 {
    font-size: var(--font-scale-400);
    margin-top: var(--space-md);
  }

  h5 {
    font-size: var(--font-scale-300);
  }

  h6 {
    font-size: var(--font-scale-200);
  }

  .lead {
    font-size: var(--font-scale-300);
  }

  .display {
    font-size: var(--font-scale-700);
  }
}

@media (max-width: 480px) {
  .home-hero__meta dl {
    grid-template-columns: 1fr;
  }

  .topic-grid,
  .tag-cloud {
    gap: var(--space-xs);
  }

  .post-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .article__meta {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Neobrutalist Refresh
   ========================================================================== */

body {
  min-height: 100vh;
  font-size: var(--font-scale-300);
  line-height: 1.6;
  letter-spacing: -0.01em;
  background: var(--colour-surface-0);
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle at 1px 1px, rgba(26, 18, 8, 0.08), transparent 50%);
  background-size: 120px 120px;
  opacity: 0.8;
  pointer-events: none;
  z-index: -1;
}

.global-header {
  border-bottom: var(--brutal-border-width) solid var(--colour-border);
  background: var(--colour-surface-1);
  box-shadow: var(--shadow-sm);
}

.brand {
  border: var(--brutal-border-width) solid var(--colour-border);
  border-radius: var(--radius-md);
  padding: var(--space-xs) var(--space-sm);
  background: var(--colour-surface-1);
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.brand__badge {
  display: inline-flex;
  margin-top: var(--space-2xs);
  font-size: var(--font-scale-100);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.15rem 0.65rem;
  border: var(--brutal-border-width) solid var(--colour-border);
  box-shadow: 3px 3px 0 var(--colour-border);
  align-self: flex-start;
}

.primary-nav {
  border: var(--brutal-border-width) solid var(--colour-border);
  border-radius: var(--radius-md);
  padding: var(--space-xs) var(--space-sm);
  background: var(--colour-surface-1);
  box-shadow: var(--shadow-sm);
}

.primary-nav__link {
  text-transform: uppercase;
  font-size: var(--font-scale-100);
  letter-spacing: 0.12em;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  border: var(--brutal-border-width) solid transparent;
}

.primary-nav__link[aria-current="page"] {
  border-color: var(--colour-border);
  box-shadow: 4px 4px 0 var(--colour-border);
  background: var(--colour-accent-soft);
}

.btn {
  border-radius: var(--radius-md);
  border: var(--brutal-border-width) solid var(--colour-border);
  box-shadow: var(--shadow-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: var(--colour-accent);
  color: #fff;
  padding: var(--space-sm) var(--space-xl);
}

.btn:hover,
.btn:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-md);
  background: var(--colour-accent-strong);
}

.btn--ghost {
  background: var(--colour-surface-1);
  color: var(--colour-border);
  box-shadow: var(--shadow-sm);
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  background: var(--colour-accent-soft);
  color: var(--colour-accent-strong);
}

.card,
.hero-note,
.hero-focus,
.hero-focus__item,
.hero-panel,
.hero-panel__spotlight,
.topic-pill a,
.article__header,
.article__content,
.article-toc,
.article-share,
.article__tags,
.article__pagination a,
.global-footer__meta,
.global-footer__legal,
.global-footer__social-link,
.project-card,
.post-card,
.home-section {
  border: var(--brutal-border-width) solid var(--colour-border);
  border-radius: var(--radius-md);
  background: var(--colour-surface-1);
  box-shadow: var(--shadow-md);
}

.home-hero {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-3xl);
}

.home-hero__inner {
  border: var(--brutal-border-width) solid var(--colour-border);
  border-radius: var(--radius-lg);
  background: var(--colour-surface-1);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.home-hero__inner::after {
  content: '';
  position: absolute;
  width: 220px;
  height: 220px;
  background: var(--gradient-accent);
  border: var(--brutal-border-width) solid var(--colour-border);
  border-radius: 50%;
  top: -80px;
  right: -60px;
  opacity: 0.35;
}

.hero-heading__sticker {
  font-family: var(--font-mono);
  font-size: var(--font-scale-100);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border: var(--brutal-border-width) solid var(--colour-border);
  padding: 0.25rem 0.75rem;
  display: inline-flex;
  width: fit-content;
  box-shadow: 4px 4px 0 var(--colour-border);
}

.hero-panel__badge {
  display: inline-flex;
  font-size: var(--font-scale-100);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  border: var(--brutal-border-width) solid rgba(255,255,255,0.8);
  padding: 0.2rem 0.65rem;
  align-self: flex-start;
  box-shadow: 3px 3px 0 rgba(0,0,0,0.4);
}

.hero-panel__stat {
  border: var(--brutal-border-width) solid rgba(255,255,255,0.5);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  background: rgba(0, 0, 0, 0.15);
}

.hero-note,
.hero-focus__item {
  background: var(--colour-surface-2);
}

.post-card__badge {
  text-transform: uppercase;
  font-size: var(--font-scale-100);
  letter-spacing: 0.1em;
  margin: 0 0 var(--space-xs);
  border: var(--brutal-border-width) solid var(--colour-border);
  width: fit-content;
  padding: 0.15rem 0.6rem;
  box-shadow: 3px 3px 0 var(--colour-border);
}

.post-card__featured-image,
.project-card__media img,
.article__content img {
  border: var(--brutal-border-width) solid var(--colour-border);
  box-shadow: var(--shadow-sm);
}

.article-toc__title,
.article-share__title {
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.article-share__button {
  border: var(--brutal-border-width) solid var(--colour-border);
  border-radius: var(--radius-sm);
  background: var(--colour-surface-2);
  box-shadow: var(--shadow-sm);
}

.article__tags a {
  border: var(--brutal-border-width) solid var(--colour-border);
  background: var(--colour-accent-soft);
  color: var(--colour-border);
  box-shadow: 3px 3px 0 var(--colour-border);
}

.global-footer {
  margin-top: var(--space-3xl);
  border-top: var(--brutal-border-width) solid var(--colour-border);
  background: var(--colour-surface-2);
  box-shadow: var(--shadow-md);
}

.global-footer__tagline {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin: var(--space-sm) 0 0;
}

.topic-pill a {
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.topic-pill a:hover,
.topic-pill a:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow-md);
}

.article__sticker {
  text-transform: uppercase;
  font-family: var(--font-mono);
  letter-spacing: 0.15em;
  font-size: var(--font-scale-100);
  margin: 0;
  width: fit-content;
  padding: 0.2rem 0.65rem;
  border: var(--brutal-border-width) solid var(--colour-border);
  box-shadow: 3px 3px 0 var(--colour-border);
}