/* ==========================================================
   IYIGOOGLE modern content platform theme
   Sections: tokens, base, layout, navigation, cards, article,
   category index, tools, accessibility, responsive, print.
   ========================================================== */

:root {
  color-scheme: light;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --font-serif: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  --color-ink: #172033;
  --color-ink-soft: #34425d;
  --color-muted: #64728b;
  --color-subtle: #8793a7;
  --color-canvas: #f6f7f4;
  --color-surface: #ffffff;
  --color-surface-raised: #fbfcf8;
  --color-border: #dfe5dc;
  --color-border-strong: #c8d2c5;
  --color-primary: #195d74;
  --color-primary-strong: #0d4359;
  --color-primary-soft: #e3f1f3;
  --color-accent: #bc6c25;
  --color-accent-soft: #fff2df;
  --color-coral: #b84a3c;
  --color-mint: #2f7d65;
  --color-focus: #f0b429;
  --color-success: #247a4a;
  --color-danger: #b42318;
  --color-overlay: rgba(14, 20, 32, 0.52);

  --text-primary: var(--color-ink);
  --text-secondary: var(--color-muted);
  --link-color: var(--color-primary);
  --link-visited: #6e4a93;
  --background: var(--color-canvas);
  --background-secondary: var(--color-surface-raised);
  --border-color: var(--color-border);
  --result-background: var(--color-primary-soft);
  --header-background: rgba(255, 255, 252, 0.92);
  --nav-background: rgba(255, 255, 252, 0.94);

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 48px;
  --space-10: 64px;
  --space-11: 80px;
  --space-12: 96px;

  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-pill: 999px;

  --shadow-xs: 0 1px 2px rgba(19, 31, 49, 0.06);
  --shadow-sm: 0 8px 24px rgba(19, 31, 49, 0.08);
  --shadow-md: 0 18px 44px rgba(19, 31, 49, 0.12);
  --shadow-focus: 0 0 0 3px rgba(240, 180, 41, 0.46);

  --container: 1180px;
  --container-wide: 1360px;
  --reading-width: 760px;
  --compact-width: 980px;
  --header-offset: 78px;

  --duration-fast: 150ms;
  --duration-med: 240ms;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition: color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out), transform var(--duration-med) var(--ease-out);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --color-ink: #eef3ee;
  --color-ink-soft: #d5dfd8;
  --color-muted: #a8b5aa;
  --color-subtle: #819089;
  --color-canvas: #101513;
  --color-surface: #171e1b;
  --color-surface-raised: #1d2521;
  --color-border: #2d3933;
  --color-border-strong: #415047;
  --color-primary: #7fc7d8;
  --color-primary-strong: #a9dfeb;
  --color-primary-soft: #183138;
  --color-accent: #e7a85f;
  --color-accent-soft: #3a2818;
  --color-coral: #f08d7f;
  --color-mint: #89d0b8;
  --color-focus: #f7c948;
  --color-overlay: rgba(0, 0, 0, 0.72);
  --header-background: rgba(16, 21, 19, 0.9);
  --nav-background: rgba(16, 21, 19, 0.92);
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.28);
  --shadow-md: 0 18px 44px rgba(0, 0, 0, 0.34);
}

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

html {
  min-height: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: 0;
  color: var(--text-primary);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.62) 0, rgba(255, 255, 255, 0) 420px),
    var(--background);
  display: flex;
  flex-direction: column;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

:root[data-theme="dark"] body {
  background:
    linear-gradient(180deg, rgba(127, 199, 216, 0.08) 0, rgba(127, 199, 216, 0) 420px),
    var(--background);
}

img,
svg,
video,
iframe {
  max-width: 100%;
}

img {
  height: auto;
}

a {
  color: var(--link-color);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: var(--transition);
}

a:hover {
  color: var(--color-primary-strong);
}

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

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

button {
  cursor: pointer;
}

button:disabled,
[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.62;
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  box-shadow: var(--shadow-focus);
}

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

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 3000;
  transform: translateY(-160%);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-ink);
  color: var(--color-surface);
  text-decoration: none;
  box-shadow: var(--shadow-md);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
}

.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;
}

/* Header and navigation */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  background: var(--header-background);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.header-container {
  width: min(100% - 32px, var(--container));
  min-height: var(--header-offset);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 44px;
  color: var(--text-primary);
  font-size: 20px;
  line-height: 1.15;
  font-weight: 750;
  text-decoration: none;
  white-space: nowrap;
}

.logo:visited {
  color: var(--text-primary);
}

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

.turkish-flag,
.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  background: linear-gradient(135deg, var(--color-primary-soft), rgba(255, 255, 255, 0.26));
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xs);
  position: relative;
  flex: 0 0 auto;
}

.turkish-moon {
  font-size: 22px;
  transform: rotate(-20deg) scaleX(0.86);
}

.turkish-star {
  position: absolute;
  right: 7px;
  top: 8px;
  font-size: 10px;
  color: var(--color-accent);
}

.search-container {
  flex: 1 1 360px;
  min-width: 180px;
}

.search-form {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-subtle);
  pointer-events: none;
}

.search-input {
  width: 100%;
  min-height: 46px;
  padding: 11px var(--space-4) 11px 44px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  transition: var(--transition);
}

.search-input::placeholder {
  color: var(--color-subtle);
}

.search-input:hover {
  border-color: var(--color-border-strong);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(25, 93, 116, 0.14);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.mobile-nav-toggle,
.theme-toggle,
.mobile-menu-close,
.nav-scroll-button {
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  color: var(--text-secondary);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  transition: var(--transition);
}

.mobile-nav-toggle {
  display: none;
  padding: 0 var(--space-3);
}

.mobile-nav-text {
  font-size: 14px;
  font-weight: 650;
}

.theme-toggle:hover,
.mobile-nav-toggle:hover,
.mobile-menu-close:hover,
.nav-scroll-button:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.nav {
  position: sticky;
  top: var(--header-offset);
  z-index: 900;
  border-bottom: 1px solid var(--border-color);
  background: var(--nav-background);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.nav-container {
  width: min(100% - 32px, var(--container));
  height: 54px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  position: relative;
}

.nav-scroll-area {
  flex: 1;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
  scroll-behavior: smooth;
  display: flex;
  align-items: center;
  padding: 0 50px;
}

.nav-scroll-area::-webkit-scrollbar {
  display: none;
}

.nav-inner {
  min-width: max-content;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-link {
  min-height: 38px;
  padding: 8px var(--space-3);
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}

.nav-link:visited {
  color: var(--text-secondary);
}

.nav-link:hover,
.nav-link.active,
.nav-link[aria-current="page"] {
  color: var(--color-primary-strong);
  background: var(--color-primary-soft);
}

.nav-scroll-button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  min-width: 36px;
  min-height: 36px;
}

.nav-scroll-button.left {
  left: 0;
}

.nav-scroll-button.right {
  right: 0;
}

.nav-scroll-button.hidden {
  display: none;
}

.mobile-nav-menu {
  position: fixed;
  inset: 0;
  z-index: 2500;
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  transform: translateY(100%);
  visibility: hidden;
  transition: transform var(--duration-med) var(--ease-out), visibility var(--duration-med) var(--ease-out);
}

.mobile-nav-menu.open {
  transform: translateY(0);
  visibility: visible;
}

.mobile-menu-header {
  min-height: 70px;
  padding: var(--space-4);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 750;
  background: var(--color-surface);
}

.mobile-menu-content {
  padding: var(--space-4);
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

.mobile-menu-content .nav-link {
  min-height: 48px;
  width: 100%;
  justify-content: flex-start;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--background-secondary);
  white-space: normal;
  overflow-wrap: anywhere;
}

body.nav-open {
  overflow: hidden;
}

/* Shared layout */
.main-content,
.main-details,
.categories-container {
  width: min(100% - 32px, var(--container));
  margin: var(--space-8) auto var(--space-12);
  flex: 1;
}

.main-details {
  width: min(100% - 32px, var(--reading-width));
}

.content-section {
  margin-top: var(--space-8);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.section-heading h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 24px;
  line-height: 1.25;
  font-weight: 800;
}

.section-heading p {
  max-width: 620px;
  margin: var(--space-1) 0 0;
  color: var(--text-secondary);
}

.breadcrumb {
  margin: 0 0 var(--space-4);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 700;
}

.article-shell > .breadcrumb {
  padding: var(--space-5) var(--space-6) 0;
  margin-bottom: 0;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  min-width: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  gap: var(--space-2);
}

.breadcrumb li + li::before {
  content: "/";
  color: var(--color-subtle);
}

.breadcrumb a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  max-width: min(68vw, 520px);
  color: var(--text-secondary);
  text-decoration: none;
  overflow-wrap: anywhere;
}

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

/* Home and listing cards */
.home-hero,
.listing-hero,
.search-hero,
.categories-header {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.home-hero {
  min-height: 300px;
  padding: var(--space-8);
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(240px, 0.55fr);
  gap: var(--space-7);
  align-items: center;
  overflow: hidden;
}

.hero-eyebrow,
.listing-eyebrow,
.article-eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}

.home-hero h1,
.listing-hero h1,
.search-hero h1,
.categories-header h1 {
  margin: 0;
  color: var(--text-primary);
  font-size: 42px;
  line-height: 1.12;
  font-weight: 850;
}

.home-hero p,
.listing-hero p,
.search-hero p,
.categories-header p {
  max-width: 760px;
  margin: var(--space-4) 0 0;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1.7;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.hero-pill,
.result-stats,
.article-category,
.article-tag,
.category-count {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-color);
  background: var(--background-secondary);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 700;
}

.hero-pill {
  padding: 8px var(--space-3);
}

.home-hero-visual {
  min-height: 220px;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background:
    linear-gradient(135deg, var(--color-primary-soft), var(--color-accent-soft));
  display: grid;
  place-items: center;
}

.home-hero-visual img {
  width: 138px;
  aspect-ratio: 1;
  object-fit: contain;
  filter: drop-shadow(0 14px 24px rgba(23, 32, 51, 0.12));
}

.listing-hero,
.search-hero,
.categories-header {
  padding: var(--space-7);
  margin-bottom: var(--space-7);
}

.result-stats {
  width: fit-content;
  max-width: 100%;
  padding: 8px var(--space-3);
  margin: 0 0 var(--space-5);
  overflow-wrap: anywhere;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.result-card {
  min-width: 0;
  padding: var(--space-5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: var(--transition);
}

.result-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-sm);
}

.result-category {
  color: var(--color-mint);
  font-size: 13px;
  line-height: 1.4;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.result-title {
  color: var(--text-primary);
  font-size: 21px;
  line-height: 1.28;
  font-weight: 820;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.result-title:visited {
  color: var(--text-primary);
}

.result-title:hover {
  color: var(--color-primary);
}

.result-excerpt {
  margin: 0;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.72;
}

.result-meta {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-color);
  color: var(--color-subtle);
  font-size: 13px;
  line-height: 1.5;
}

.empty-card {
  min-height: 120px;
}

/* Category index */
.categories-container {
  width: min(100% - 32px, var(--compact-width));
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.category-link {
  color: inherit;
  text-decoration: none;
}

.category-link:visited {
  color: inherit;
}

.category-card {
  height: 100%;
  min-width: 0;
  padding: var(--space-5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: var(--transition);
}

.category-link:hover .category-card {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.category-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.category-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.category-title {
  color: var(--text-primary);
  font-size: 18px;
  line-height: 1.25;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.category-description {
  margin: 0;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
}

/* Article */
.article-shell,
.main-details > article {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.article-header {
  padding: var(--space-8) var(--space-8) var(--space-6);
  border-bottom: 1px solid var(--border-color);
}

.article-category-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.article-category-link {
  text-decoration: none;
}

.article-category {
  padding: 7px var(--space-3);
}

.article-category:hover {
  color: var(--color-primary-strong);
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.article-title {
  max-width: 850px;
  margin: 0 0 var(--space-5);
  color: var(--text-primary);
  font-size: 40px;
  line-height: 1.16;
  font-weight: 850;
  overflow-wrap: anywhere;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-5);
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
}

.article-author {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 750;
  color: var(--text-primary);
}

.author-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  object-fit: cover;
  background: var(--background-secondary);
}

.article-content {
  padding: var(--space-7) var(--space-8);
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.86;
}

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

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

.article-content p {
  margin: 0 0 var(--space-6);
}

.article-content h2,
.article-content h3,
.article-content h4 {
  font-family: var(--font-sans);
  color: var(--text-primary);
  line-height: 1.24;
  font-weight: 850;
  letter-spacing: 0;
}

.article-content h2 {
  margin: var(--space-8) 0 var(--space-4);
  font-size: 28px;
}

.article-content h3 {
  margin: var(--space-7) 0 var(--space-3);
  font-size: 23px;
}

.article-content h4 {
  margin: var(--space-6) 0 var(--space-3);
  font-size: 20px;
}

.article-content a {
  color: var(--link-color);
  font-weight: 700;
}

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

.article-content img {
  width: 100%;
  max-height: 520px;
  object-fit: cover;
  margin: 0 0 var(--space-7);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.article-content ul,
.article-content ol {
  margin: 0 0 var(--space-6);
  padding-left: var(--space-7);
}

.article-content li {
  margin-bottom: var(--space-3);
  padding-left: var(--space-1);
}

.article-content li::marker {
  color: var(--color-accent);
  font-weight: 850;
}

.article-content blockquote {
  margin: var(--space-7) 0;
  padding: var(--space-5) var(--space-6);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-md);
  background: var(--color-accent-soft);
  color: var(--color-ink-soft);
  font-family: var(--font-serif);
  font-size: 20px;
  line-height: 1.76;
}

.article-content blockquote p {
  margin: 0;
}

.article-content table {
  width: 100%;
  margin: var(--space-7) 0;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
}

.article-content th,
.article-content td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}

.article-content th {
  background: var(--background-secondary);
  color: var(--text-primary);
  font-weight: 800;
  text-align: left;
}

.article-content tr:last-child td {
  border-bottom: 0;
}

.article-content pre {
  margin: var(--space-7) 0;
  padding: var(--space-5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow-x: auto;
  background: #101820;
  color: #edf6f9;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.65;
}

.article-content code {
  font-family: var(--font-mono);
}

.article-content :not(pre) > code {
  padding: 0.14em 0.34em;
  border-radius: var(--radius-xs);
  background: var(--background-secondary);
  color: var(--color-coral);
  font-size: 0.88em;
}

.article-footer {
  padding: var(--space-6) var(--space-8) var(--space-8);
  border-top: 1px solid var(--border-color);
  background: var(--background-secondary);
}

.article-footer h2,
.related-title {
  margin: 0 0 var(--space-4);
  color: var(--text-primary);
  font-size: 20px;
  line-height: 1.3;
  font-weight: 850;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.article-tag {
  padding: 8px var(--space-3);
  text-decoration: none;
}

.article-tag:hover {
  color: var(--color-primary-strong);
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

/* Footer */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  background: var(--color-surface);
}

.footer-container {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  padding: var(--space-7) 0 var(--space-4);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-2) var(--space-4);
}

.footer-link {
  min-height: 42px;
  padding: 9px var(--space-3);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.footer-link:visited {
  color: var(--text-secondary);
}

.footer-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.footer-bottom {
  width: min(100% - 32px, var(--container));
  margin: 0 auto;
  padding: var(--space-4) 0 var(--space-7);
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  text-align: center;
  font-size: 13px;
}

.footer-bottom p {
  margin: 0;
}

/* Legacy listing compatibility */
.grid-container {
  width: min(100% - 32px, var(--container));
  margin: var(--space-8) auto var(--space-12);
}

.articles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.articles article,
.article-wrapper {
  min-width: 0;
}

.articles .post,
.article-wrapper {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
}

.article-wrapper {
  padding: var(--space-5);
}

.title,
.main-title {
  margin: var(--space-3) 0 0;
  color: var(--text-primary);
  font-size: 20px;
  line-height: 1.3;
  font-weight: 800;
}

.featured-image,
.thumb,
.fullimage {
  display: block;
}

.fullimage {
  min-height: 160px;
  border-radius: var(--radius-md);
  background: var(--background-secondary);
  background-size: cover;
  background-position: center;
}

.author-meta,
.author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-secondary);
  font-size: 13px;
  text-decoration: none;
}

.author-image {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background-size: cover;
  background-position: center;
  background-color: var(--background-secondary);
}

.author-image-logo {
  background-image: url("/images/googlelogo.jpg");
}

.clear {
  clear: both;
}

/* Performance and compatibility */
@supports (content-visibility: auto) {
  .content-section,
  .result-card,
  .category-card,
  .article-footer,
  .tool-card {
    content-visibility: auto;
    contain-intrinsic-size: 1px 320px;
  }
}

@supports not (display: grid) {
  .home-hero,
  .result-grid,
  .categories-grid,
  .articles,
  .mobile-menu-content {
    display: block;
  }

  .result-card,
  .category-link,
  .articles article {
    display: block;
    margin-bottom: var(--space-5);
  }
}

@supports not (backdrop-filter: blur(1px)) {
  .header,
  .nav {
    background: var(--color-surface);
  }
}

/* Tool, API and error pages */
.tool-page,
.error-page,
.chat-page {
  display: block;
  min-height: 100vh;
  padding: var(--space-8) var(--space-4);
  background: var(--background);
}

.tool-card,
.error-panel,
.chat-panel {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: var(--space-7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.tool-card h1,
.error-panel h1,
.error-panel h2,
.chat-panel h1 {
  margin: 0 0 var(--space-3);
  color: var(--text-primary);
  font-size: 30px;
  line-height: 1.2;
  font-weight: 850;
}

.tool-description,
.tool-card p,
.error-panel p {
  color: var(--text-secondary);
}

.tool-form,
.search-form.tool-form {
  margin: var(--space-6) 0;
}

.tool-form form,
.tool-form {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.tool-form input[type="text"] {
  flex: 1;
  min-width: 0;
  min-height: 48px;
  padding: 12px var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  background: var(--color-surface);
}

.tool-form button,
.tool-button {
  min-height: 48px;
  padding: 0 var(--space-5);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-md);
  color: #fff;
  background: var(--color-primary);
  font-weight: 800;
  transition: var(--transition);
}

.tool-form button:hover,
.tool-button:hover {
  background: var(--color-primary-strong);
}

.tool-result,
.result {
  margin-top: var(--space-5);
  padding: var(--space-5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--background-secondary);
  overflow-x: auto;
}

.tool-result pre,
.result pre {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.tool-error,
.error {
  color: var(--color-danger);
  font-weight: 800;
}

#chat-container {
  min-height: 420px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

#chat-container .openai-chat-window {
  min-height: 420px;
}

.error-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-5);
  font-size: 14px;
}

.error-table th,
.error-table td {
  padding: var(--space-3);
  border: 1px solid var(--border-color);
  text-align: left;
  vertical-align: top;
}

.error-table th {
  background: var(--background-secondary);
}

/* Responsive */
@media (max-width: 1100px) {
  .result-grid,
  .categories-grid,
  .articles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-hero h1,
  .listing-hero h1,
  .search-hero h1,
  .categories-header h1 {
    font-size: 36px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-offset: 72px;
  }

  body {
    font-size: 15px;
  }

  .header-container {
    width: min(100% - 24px, var(--container));
    min-height: 0;
    padding: var(--space-3) 0;
    flex-wrap: wrap;
    gap: var(--space-3);
  }

  .logo {
    font-size: 18px;
    margin-right: auto;
  }

  .search-container {
    order: 4;
    flex: 1 1 100%;
  }

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

  .nav {
    display: none;
  }

  .main-content,
  .main-details,
  .categories-container,
  .grid-container {
    width: min(100% - 24px, var(--container));
    margin-top: var(--space-6);
    margin-bottom: var(--space-9);
  }

  .home-hero {
    grid-template-columns: 1fr;
    padding: var(--space-6);
  }

  .home-hero-visual {
    min-height: 150px;
  }

  .home-hero-visual img {
    width: 100px;
  }

  .home-hero h1,
  .listing-hero h1,
  .search-hero h1,
  .categories-header h1 {
    font-size: 30px;
  }

  .home-hero p,
  .listing-hero p,
  .search-hero p,
  .categories-header p {
    font-size: 16px;
  }

  .listing-hero,
  .search-hero,
  .categories-header,
  .article-header,
  .article-content,
  .article-footer,
  .tool-card,
  .error-panel,
  .chat-panel {
    padding: var(--space-5);
  }

  .result-grid,
  .categories-grid,
  .articles {
    grid-template-columns: 1fr;
  }

  .article-title {
    font-size: 30px;
  }

  .article-content {
    font-size: 17px;
    line-height: 1.82;
  }

  .article-content h2 {
    font-size: 24px;
  }

  .article-content h3 {
    font-size: 21px;
  }

  .article-content table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .footer-container {
    padding-top: var(--space-6);
  }

  .tool-form form,
  .tool-form {
    flex-direction: column;
    align-items: stretch;
  }

  .tool-form input[type="text"],
  .tool-form button {
    width: 100%;
  }
}

@media (max-width: 430px) {
  .header-container,
  .main-content,
  .main-details,
  .categories-container,
  .grid-container,
  .footer-container,
  .footer-bottom {
    width: min(100% - 20px, var(--container));
  }

  .logo {
    max-width: 170px;
    white-space: normal;
  }

  .mobile-nav-text {
    display: none;
  }

  .mobile-menu-content {
    grid-template-columns: 1fr;
  }

  .home-hero,
  .listing-hero,
  .search-hero,
  .categories-header,
  .result-card,
  .category-card,
  .article-header,
  .article-content,
  .article-footer,
  .tool-card,
  .error-panel,
  .chat-panel {
    padding: var(--space-4);
  }

  .home-hero h1,
  .listing-hero h1,
  .search-hero h1,
  .categories-header h1,
  .article-title {
    font-size: 26px;
  }

  .result-title {
    font-size: 19px;
  }

  .article-content {
    font-size: 16px;
  }

  .article-content ul,
  .article-content ol {
    padding-left: var(--space-5);
  }
}

@media (max-width: 360px) {
  .header-actions {
    gap: var(--space-1);
  }

  .theme-toggle,
  .mobile-nav-toggle {
    min-width: 42px;
  }

  .logo {
    max-width: 150px;
    font-size: 17px;
  }
}

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

@media print {
  .header,
  .nav,
  .mobile-nav-menu,
  .footer,
  .article-footer,
  .skip-link {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .main-details,
  .article-shell,
  .main-details > article {
    width: 100%;
    margin: 0;
    border: 0;
    box-shadow: none;
  }

  .article-header,
  .article-content {
    padding: 0;
  }

  .article-content {
    font-size: 12pt;
    line-height: 1.6;
  }

  .article-content a[href]::after {
    content: " (" attr(href) ")";
    font-size: 10pt;
  }
}