/**
 * Modern Vanilla CMS - Public Frontend Stylesheet
 * 100% Pure CSS - No frameworks, No Tailwind
 */

:root {
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Color Palette - Light Mode
     --color-primary is the accent colour from the CMS settings (set inline on
     <html>); every other primary shade is derived from it so a custom accent
     applies to hovers, badges, tints and focus rings too. */
  --color-primary: #2563eb;
  --color-primary-hover: color-mix(in srgb, var(--color-primary) 88%, black);
  --color-primary-light: color-mix(in srgb, var(--color-primary) 8%, white);
  --color-primary-border: color-mix(in srgb, var(--color-primary) 20%, transparent);
  --color-primary-ring: color-mix(in srgb, var(--color-primary) 15%, transparent);
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-text-main: #0f172a;
  --color-text-muted: #64748b;
  --color-text-light: #64748b; /* 4.5:1+ on --color-bg and --color-surface */
  --color-code-bg: #f1f5f9;
  --color-code-text: #db2777;
  --color-header-bg: rgba(255, 255, 255, 0.95);
  --color-table-header: #f1f5f9;
  --color-skeleton-from: #f1f5f9;
  --color-skeleton-to: #e2e8f0;

  /* Accents & States */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  /* Shadows & Radius */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Layout */
  --container-max-width: 1400px;
  --header-height: 72px;
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* Dark Mode Token Overrides */
[data-theme="dark"] {
  --color-primary-hover: color-mix(in srgb, var(--color-primary) 85%, white);
  --color-primary-light: color-mix(in srgb, var(--color-primary) 20%, transparent);
  --color-bg: #090d16;
  --color-surface: #111827;
  --color-border: #1f2937;
  --color-text-main: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-text-light: #94a3b8; /* 6.9:1 on the dark surface */
  --color-code-bg: #1f2937;
  --color-code-text: #f472b6;
  --color-header-bg: rgba(17, 24, 39, 0.92);
  --color-table-header: #1e293b;
  --color-skeleton-from: #1f2937;
  --color-skeleton-to: #374151;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.4);
}

/* Same dark tokens for visitors whose OS prefers dark and where public/js/theme.js
   could not run (no JavaScript). A saved light choice (data-theme="light") wins. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary-hover: color-mix(in srgb, var(--color-primary) 85%, white);
    --color-primary-light: color-mix(in srgb, var(--color-primary) 20%, transparent);
    --color-bg: #090d16;
    --color-surface: #111827;
    --color-border: #1f2937;
    --color-text-main: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-text-light: #94a3b8; /* 6.9:1 on the dark surface */
    --color-code-bg: #1f2937;
    --color-code-text: #f472b6;
    --color-header-bg: rgba(17, 24, 39, 0.92);
    --color-table-header: #1e293b;
    --color-skeleton-from: #1f2937;
    --color-skeleton-to: #374151;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5), 0 4px 6px -4px rgb(0 0 0 / 0.4);
  }
}

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

/* Motion is optional: honour the OS preference everywhere (WCAG 2.3.3) */
@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;
  }
}

/* Visually hidden but available to assistive technology (live regions, labels) */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* Accessibility Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1.5rem;
  background: var(--color-primary);
  color: #ffffff;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
  outline: 2px solid #ffffff;
  outline-offset: 2px;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-main);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

/* Header & Brand */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--color-header-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--color-text-main);
  transition: opacity var(--transition-fast);
  flex-shrink: 0;
}

.brand:hover {
  opacity: 0.85;
}

.brand-icon {
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text-main);
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.5rem;
  flex-wrap: nowrap;
}

.nav-item a {
  display: inline-block;
  padding: 0.5rem 0.875rem;
  text-decoration: none;
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-item a:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.nav-item a.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  font-weight: 600;
}

/* Submenus: a disclosure button next to the parent link (or a group
   heading button); the list drops down below it */
.nav-item {
  position: relative;
}

.has-submenu {
  display: flex;
  align-items: center;
}

.submenu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  min-width: 2rem;
  min-height: 2.25rem;
  padding: 0.5rem 0.375rem;
  border: 0;
  border-radius: var(--radius-sm);
  background: none;
  color: var(--color-text-muted);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-group-toggle {
  padding: 0.5rem 0.875rem;
}

/* The caret button sits right next to its parent link */
.has-submenu > a {
  padding-right: 0.375rem;
}

.has-submenu > a + .submenu-toggle {
  margin-left: -0.125rem;
}

.submenu-toggle:hover,
.has-submenu.open > .submenu-toggle {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.submenu-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.submenu-caret {
  width: 0.4375rem;
  height: 0.4375rem;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform var(--transition-fast);
}

.has-submenu.open > .submenu-toggle .submenu-caret {
  transform: translateY(2px) rotate(-135deg);
}

/* The submenu holding the current page highlights its parent */
.has-submenu.active-parent > a,
.has-submenu.active-parent > .nav-group-toggle {
  color: var(--color-primary);
  font-weight: 600;
}

.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  z-index: 60;
  min-width: 14rem;
  max-width: 20rem;
  margin: 0;
  padding: 0.375rem;
  list-style: none;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.has-submenu.open > .submenu {
  display: block;
}

.submenu-item a {
  display: block;
  white-space: normal;
}

/* A mouse on a wide screen opens a submenu on hover as well */
@media (hover: hover) and (min-width: 1101px) {
  .has-submenu:hover > .submenu {
    display: block;
  }
}

/* Nav Actions & Theme Toggle */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

/* Language switcher: shown only on multilingual sites (empty list otherwise) */
.lang-switcher {
  display: flex;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.lang-switcher:empty {
  display: none;
}

.lang-switcher a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.lang-switcher a:hover,
.lang-switcher a.active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.btn-theme-toggle {
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
  padding: 0;
  flex-shrink: 0;
}

.btn-theme-toggle:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

[data-theme="dark"] .btn-theme-toggle .icon-sun {
  display: block;
}
[data-theme="dark"] .btn-theme-toggle .icon-moon {
  display: none;
}
:root:not([data-theme="dark"]) .btn-theme-toggle .icon-sun {
  display: none;
}
:root:not([data-theme="dark"]) .btn-theme-toggle .icon-moon {
  display: block;
}

/* Nav Search Box */
.nav-search {
  position: relative;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  width: 170px;
  height: 36px;
  padding: 0 2.1rem 0 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-main);
  font-size: 0.875rem;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  width: 220px;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-ring);
}

.search-icon {
  position: absolute;
  right: 0.65rem;
  color: var(--color-text-light);
  pointer-events: none;
  display: flex;
  align-items: center;
}

.search-results-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 280px;
  max-height: 340px;
  overflow-y: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  padding: 0.5rem;
}

.search-result-item {
  display: block;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--color-text-main);
  transition: background var(--transition-fast);
}

.search-result-item:hover,
.search-result-item.highlighted,
.search-result-item[aria-selected="true"] {
  background: var(--color-primary-light);
}

.search-result-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 0.2rem;
}

.search-result-snippet {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.search-no-results {
  padding: 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-align: center;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}

.hamburger-bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text-main);
  transition: transform var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.875rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text-main);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Main Content */
.site-main {
  flex: 1;
  padding-top: 3rem;
  padding-bottom: 5rem;
}

.page-article {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3.5rem 4rem;
  box-shadow: var(--shadow-sm);
}

.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--color-text-main);
}

.page-title:focus,
.not-found-title:focus {
  outline: none;
}

.page-title:focus-visible,
.not-found-title:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 6px;
  border-radius: var(--radius-sm);
}

.page-meta {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

.page-category-wrap {
  margin-bottom: 0.75rem;
}

.page-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-primary-border);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-tags-wrap {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.page-tags-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-right: 0.25rem;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.tag-pill:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Content Typography (For CMS Content) */
.content-typography {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--color-text-main);
  overflow-wrap: anywhere;
}

.content-typography p {
  margin-bottom: 1.5rem;
}

.content-typography p.lead {
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.content-typography h1,
.content-typography h2,
.content-typography h3,
.content-typography h4 {
  color: var(--color-text-main);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-top: 2.25rem;
  margin-bottom: 1rem;
}

.content-typography h1 { font-size: 2.25rem; }
.content-typography h2 { font-size: 1.75rem; }
.content-typography h3 { font-size: 1.375rem; }

.content-typography ul,
.content-typography ol {
  margin-bottom: 1.5rem;
  padding-left: 1.75rem;
}

.content-typography li {
  margin-bottom: 0.5rem;
}

.content-typography a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-fast);
}

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

.content-typography blockquote {
  border-left: 4px solid var(--color-primary);
  background-color: var(--color-bg);
  padding: 1.25rem 1.75rem;
  margin: 2rem 0;
  font-style: italic;
  font-size: 1.2rem;
  color: var(--color-text-main);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

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

.content-typography pre {
  background-color: #0f172a;
  color: #f8fafc;
  padding: 1.25rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin-bottom: 1.5rem;
}

.content-typography pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

.content-typography hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

.content-typography img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  box-shadow: var(--shadow-md);
}

/* Tables are wrapped in .table-scroll at render time (views.contentHtml) */
.content-typography .table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 2rem 0;
}

.content-typography table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 0.95rem;
}

.content-typography .table-scroll table {
  margin: 0;
  min-width: 480px;
}

.content-typography th,
.content-typography td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  text-align: left;
}

.content-typography th {
  background-color: var(--color-table-header);
  font-weight: 600;
}

/* Skeleton Loading */
.loading-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 3rem;
}

.skeleton-title {
  height: 40px;
  width: 50%;
  background: linear-gradient(90deg, var(--color-skeleton-from) 25%, var(--color-skeleton-to) 50%, var(--color-skeleton-from) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
  margin-bottom: 2rem;
}

.skeleton-line {
  height: 18px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-skeleton-from) 25%, var(--color-skeleton-to) 50%, var(--color-skeleton-from) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.skeleton-line.short {
  width: 65%;
}

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

/* 404 View */
.not-found-container {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 4rem 2rem;
  text-align: center;
}

.not-found-code {
  font-size: 5rem;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 1rem;
}

.not-found-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.not-found-container p {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
  padding: 2rem 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

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

.footer-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.dot {
  color: var(--color-text-light);
}

/* Category badge & tag pills are links to their listings */
a.page-category-badge,
a.tag-pill {
  text-decoration: none;
}

a.page-category-badge {
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

a.page-category-badge:hover,
a.page-category-badge:focus-visible {
  border-color: var(--color-primary);
}

/* Category / Tag Listing */
.listing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 1.25rem;
}

.listing-card {
  display: flex;
}

.listing-card-link {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
  padding: 1.5rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.listing-card-link:hover,
.listing-card-link:focus-visible {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.listing-card-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

.listing-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-main);
}

.listing-card-desc {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.listing-card-date {
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

@media (prefers-reduced-motion: reduce) {
  .listing-card-link,
  .listing-card-link:hover {
    transition: none;
    transform: none;
  }
}

/* Responsive Breakpoints */
@media (max-width: 1100px) {
  :root {
    /* The mobile drawer is positioned at var(--header-height) - keep both in sync */
    --header-height: 64px;
  }

  .site-header {
    height: var(--header-height);
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    box-shadow: var(--shadow-lg);
    max-height: calc(100vh - var(--header-height));
    max-height: calc(100dvh - var(--header-height));
    overflow-y: auto;
    display: none;
  }

  .site-nav.open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 0.25rem;
  }

  .nav-item {
    width: 100%;
  }

  .nav-item a {
    width: 100%;
    padding: 0.75rem 1rem;
  }

  /* Submenus open inline in the drawer (accordion) */
  .has-submenu {
    flex-wrap: wrap;
  }

  .has-submenu > a {
    flex: 1;
    width: auto;
  }

  .submenu-toggle {
    min-width: 2.75rem;
    min-height: 2.75rem;
  }

  .nav-group-toggle {
    flex: 1;
    justify-content: space-between;
    padding: 0.75rem 1rem;
  }

  .submenu {
    position: static;
    width: calc(100% - 1rem);
    min-width: 0;
    max-width: none;
    margin: 0.125rem 0 0.25rem 1rem;
    padding: 0 0 0 0.5rem;
    border: 0;
    border-left: 2px solid var(--color-border);
    border-radius: 0;
    box-shadow: none;
  }

  .nav-search {
    width: 100%;
  }

  .search-box {
    width: 100%;
  }

  .search-input,
  .search-input:focus {
    width: 100%;
    font-size: 1rem; /* < 16px makes iOS Safari zoom into the field */
  }

  .search-results-dropdown {
    right: auto;
    left: 0;
    width: 100%;
  }

  .nav-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    width: 100%;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
  }

  .nav-actions .btn {
    flex: 1;
  }

  .page-article {
    padding: 1.75rem;
  }

  .page-title {
    font-size: 1.875rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

/* Phones: narrower gutters so the text column stays readable */
@media (max-width: 600px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .page-article {
    padding: 1.5rem 1.25rem;
  }

  .loading-container,
  .not-found-container {
    padding: 2rem 1.25rem;
  }

  .content-typography {
    font-size: 1.0625rem;
  }
}