/* ==========================================================================
   Gauss AI — Editorial Blog Stylesheet v4.0
   "Friendly Precision" — clean editorial blog anchored in Gauss brand blue

   Depends on: brand-tokens.css (design tokens), global.css, layout.css
   Updated: 2026-03-20
   ========================================================================== */


/* ==========================================================================
   0. DESIGN TOKENS (local aliases)
   ========================================================================== */

:root {
  /* Fonts */
  --font-brand: 'Sora', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Brand palette */
  --gauss-blue-700: #1050A0;
  --gauss-cyan-500: #3FA4E5;
  --gauss-ink-900: #0F172A;
  --gauss-ink-700: #334155;
  --gauss-ink-500: #64748B;
  --gauss-sky-50: #F0F7FF;
  --gauss-sky-100: #E0EFFF;
  --gauss-white: #FFFFFF;
  --gauss-line-200: #E2E8F0;

  /* Gradient */
  --gauss-gradient-brand: linear-gradient(135deg, var(--gauss-blue-700), var(--gauss-cyan-500));

  /* Shadows */
  --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
  --shadow-card-hover: 0 4px 12px rgba(15, 23, 42, 0.10), 0 12px 28px rgba(15, 23, 42, 0.08);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Layout */
  --header-height: 72px;
  --container-max: 1200px;
  --container-narrow: 720px;
  --container-padding: 1.5rem;

  /* Spacing shortcuts */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-14: 3.5rem;
  --space-16: 4rem;

  /* Transitions */
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}


/* ==========================================================================
   1. BLOG LISTING PAGE
   ========================================================================== */

.blog-listing {
  padding-top: calc(var(--header-height) + var(--space-16));
  padding-bottom: 5rem;
}

.blog-listing__header {
  text-align: center;
  max-width: var(--container-max);
  margin: 0 auto var(--space-12);
  padding: 0 var(--container-padding);
}

.blog-listing__header h1 {
  font-family: var(--font-brand);
  font-size: clamp(2rem, 4vw + 0.5rem, 3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--gauss-ink-900);
  margin: 0 0 var(--space-4);
}

.blog-listing__header p {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.65;
  color: var(--gauss-ink-500);
  max-width: 600px;
  margin: 0 auto;
}


/* ==========================================================================
   2. CATEGORY FILTER BAR
   ========================================================================== */

.blog-listing__categories {
  position: relative;
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  flex-wrap: nowrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 0 var(--container-padding) var(--space-10);
  max-width: var(--container-max);
  margin: 0 auto;
}

.blog-listing__categories::-webkit-scrollbar {
  display: none;
}

.blog-listing__categories .category-pill {
  flex-shrink: 0;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: var(--space-2) var(--space-5);
  border-radius: 100px;
  border: 1px solid var(--gauss-line-200);
  background: transparent;
  color: var(--gauss-ink-500);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-smooth);
  white-space: nowrap;
  text-decoration: none;
}

.blog-listing__categories .category-pill:hover {
  background: var(--gauss-sky-50);
  border-color: var(--gauss-cyan-500);
  color: var(--gauss-blue-700);
}

.blog-listing__categories .category-pill.is-active,
.blog-listing__categories .category-pill[aria-current="true"] {
  background: var(--gauss-gradient-brand);
  color: var(--gauss-white);
  border-color: transparent;
  box-shadow: 0 2px 8px rgba(16, 80, 160, 0.25);
}

/* Scroll fade indicators on mobile */
.blog-listing__categories-wrap {
  position: relative;
}

.blog-listing__categories-wrap::before,
.blog-listing__categories-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2.5rem;
  z-index: 1;
  pointer-events: none;
}

.blog-listing__categories-wrap::before {
  left: 0;
  background: linear-gradient(to right, var(--gauss-white), transparent);
}

.blog-listing__categories-wrap::after {
  right: 0;
  background: linear-gradient(to left, var(--gauss-white), transparent);
}


/* ==========================================================================
   3. FEATURED POST
   ========================================================================== */

.blog-featured {
  max-width: var(--container-max);
  margin: 0 auto var(--space-16);
  padding: 0 var(--container-padding);
}

.blog-featured__card {
  display: grid;
  grid-template-columns: 55% 45%;
  background: var(--gauss-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--duration-base) var(--ease-smooth);
  text-decoration: none;
  color: inherit;
}

.blog-featured__card:hover {
  box-shadow: var(--shadow-card-hover);
}

.blog-featured__image {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
}

.blog-featured__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease-smooth);
}

.blog-featured__card:hover .blog-featured__image img {
  transform: scale(1.03);
}

.blog-featured__image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    transparent 60%,
    rgba(15, 23, 42, 0.03) 100%
  );
  pointer-events: none;
}

.blog-featured__content {
  padding: var(--space-10);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-5);
}

.blog-featured__content .blog-card__tag {
  align-self: flex-start;
}

.blog-featured__content h2 {
  font-family: var(--font-brand);
  font-size: clamp(1.5rem, 2.5vw + 0.25rem, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--gauss-ink-900);
  margin: 0;
  transition: color var(--duration-fast) var(--ease-smooth);
}

.blog-featured__card:hover h2 {
  color: var(--gauss-blue-700);
}

.blog-featured__content p {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--gauss-ink-700);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-featured__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--gauss-ink-500);
}

.blog-featured__meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--gauss-ink-500);
  flex-shrink: 0;
}

.blog-featured__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--gauss-cyan-500);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-smooth);
}

.blog-featured__cta::after {
  content: "\2192";
  transition: transform var(--duration-fast) var(--ease-smooth);
}

.blog-featured__cta:hover {
  color: var(--gauss-blue-700);
}

.blog-featured__cta:hover::after {
  transform: translateX(4px);
}


/* ==========================================================================
   4. BLOG GRID
   ========================================================================== */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}


/* ==========================================================================
   5. BLOG CARD
   ========================================================================== */

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--gauss-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition:
    transform var(--duration-base) var(--ease-spring),
    box-shadow var(--duration-base) var(--ease-smooth);
  text-decoration: none;
  color: inherit;
}

.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.blog-card__image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.blog-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-smooth);
}

.blog-card:hover .blog-card__image img {
  transform: scale(1.05);
}

.blog-card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

/* ---- Category tag ---- */

.blog-card__tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) 0.625rem;
  border-radius: var(--radius-sm);
  line-height: 1.5;
  width: fit-content;
}

.blog-card h3 {
  font-family: var(--font-brand);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--gauss-ink-900);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--duration-fast) var(--ease-smooth);
}

.blog-card:hover h3 {
  color: var(--gauss-blue-700);
}

.blog-card p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--gauss-ink-700);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--gauss-ink-500);
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid var(--gauss-line-200);
}

.blog-card__meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--gauss-line-200);
  flex-shrink: 0;
}

.blog-card__meta .reading-time {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
}

.blog-card__meta .reading-time svg {
  width: 0.9em;
  height: 0.9em;
  flex-shrink: 0;
  opacity: 0.6;
}


/* ==========================================================================
   6. CATEGORY TAG COLORS
   ========================================================================== */

.tag--fundamentals {
  background: rgba(16, 80, 160, 0.08);
  color: var(--gauss-blue-700);
}

.tag--budgeting {
  background: rgba(4, 120, 87, 0.08);
  color: #047857;
}

.tag--technology {
  background: rgba(63, 164, 229, 0.08);
  color: #1976C8;
}

.tag--savings {
  background: rgba(30, 58, 95, 0.08);
  color: #1E3A5F;
}

.tag--investing {
  background: rgba(91, 33, 182, 0.08);
  color: #5B21B6;
}

.tag--lifestyle {
  background: rgba(190, 24, 93, 0.08);
  color: #BE185D;
}


/* ==========================================================================
   7. ARTICLE PAGE
   ========================================================================== */

.article {
  padding-top: calc(var(--header-height) + var(--space-14));
  padding-bottom: 5rem;
}

/* ---- Article header ---- */

.article__header {
  max-width: 800px;
  margin: 0 auto var(--space-8);
  padding: 0 var(--container-padding);
  text-align: center;
}

.article__header h1 {
  font-family: var(--font-brand);
  font-size: clamp(2rem, 4vw + 0.5rem, 3rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--gauss-ink-900);
  margin: 0 0 var(--space-6);
}

.article__meta,
.article__header-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--gauss-ink-500);
  flex-wrap: wrap;
}

.article__meta .dot,
.article__header-meta .dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--gauss-line-200);
  flex-shrink: 0;
}

.article__meta .blog-card__tag,
.article__header-meta .blog-card__tag {
  font-size: 0.75rem;
}

/* ---- Hero image ---- */

.article__hero-image {
  max-width: var(--container-max);
  margin: var(--space-8) auto var(--space-12);
  padding: 0 var(--container-padding);
}

.article__hero-image img {
  width: 100%;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
}

/* ---- Article layout (content + sidebar) ---- */

.article__layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-12);
  max-width: calc(var(--container-narrow) + 280px + var(--space-12));
  margin: 0 auto;
  padding: 0 var(--container-padding);
  align-items: start;
}

/* ---- Article content ---- */

.article__content {
  max-width: var(--container-narrow);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--gauss-ink-700);
}

.article__content > * + * {
  margin-top: var(--space-6);
}

.article__content h2 {
  font-family: var(--font-brand);
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--gauss-ink-900);
  margin-top: var(--space-14);
  position: relative;
  padding-left: var(--space-6);
}

.article__content h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 28px;
  border-radius: 100px;
  background: var(--gauss-gradient-brand);
}

.article__content h3 {
  font-family: var(--font-brand);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--gauss-ink-900);
  margin-top: var(--space-10);
}

.article__content p {
  margin: 0;
  line-height: 1.8;
  color: var(--gauss-ink-700);
}

.article__content a {
  color: var(--gauss-cyan-500);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(63, 164, 229, 0.30);
  transition: text-decoration-color var(--duration-fast) var(--ease-smooth),
              color var(--duration-fast) var(--ease-smooth);
}

.article__content a:hover {
  text-decoration-color: var(--gauss-cyan-500);
  color: var(--gauss-blue-700);
}

.article__content strong {
  font-weight: 600;
  color: var(--gauss-ink-900);
}

/* Lists */

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

.article__content ul {
  list-style: none;
}

.article__content ul li {
  position: relative;
  padding-left: var(--space-5);
}

.article__content ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gauss-cyan-500);
}

.article__content ol {
  list-style: none;
  counter-reset: article-ol;
}

.article__content ol li {
  position: relative;
  padding-left: var(--space-6);
  counter-increment: article-ol;
}

.article__content ol li::before {
  content: counter(article-ol, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-brand);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gauss-cyan-500);
  line-height: 1.8;
}

.article__content li + li {
  margin-top: var(--space-2);
}

/* Blockquote */

.article__content blockquote {
  margin: var(--space-8) 0;
  padding: var(--space-6) var(--space-8);
  border-left: 3px solid var(--gauss-blue-700);
  background: var(--gauss-sky-100);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--gauss-ink-700);
}

.article__content blockquote p {
  margin: 0;
}

/* Code */

.article__content code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875em;
  background: var(--gauss-sky-50);
  padding: 0.125rem 0.375rem;
  border-radius: 6px;
}

.article__content pre {
  background: var(--gauss-ink-900);
  color: #E2E8F0;
  padding: var(--space-6);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.875rem;
  line-height: 1.65;
}

.article__content pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  color: inherit;
}

/* Images */

.article__content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  display: block;
}

.article__content .full-bleed {
  margin-left: calc(-1 * var(--space-8));
  margin-right: calc(-1 * var(--space-8));
  max-width: calc(100% + var(--space-8) * 2);
  border-radius: var(--radius-lg);
}

.article__content figure {
  margin: var(--space-8) 0;
}

.article__content figcaption {
  font-size: 0.875rem;
  color: var(--gauss-ink-500);
  text-align: center;
  margin-top: var(--space-3);
}


/* ==========================================================================
   8. ARTICLE CTA BOX
   ========================================================================== */

.article__cta {
  margin: var(--space-12) 0;
  padding: var(--space-10) var(--space-8);
  background: var(--gauss-sky-50);
  border: 1px solid var(--gauss-line-200);
  border-radius: var(--radius-lg);
  text-align: center;
}

.article__cta h3 {
  font-family: var(--font-brand);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--gauss-ink-900);
  margin: 0 0 var(--space-3);
}

.article__cta p {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  color: var(--gauss-ink-700);
  margin: 0 0 var(--space-6);
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.article__cta .btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.875rem var(--space-8);
  border-radius: 100px;
  background: var(--gauss-gradient-brand);
  color: var(--gauss-white);
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-smooth);
  box-shadow: 0 2px 8px rgba(16, 80, 160, 0.25);
}

.article__cta .btn:hover {
  box-shadow: 0 4px 16px rgba(16, 80, 160, 0.35);
  transform: translateY(-2px);
}


/* ==========================================================================
   9. ARTICLE FAQ
   ========================================================================== */

.article__faq {
  margin-top: var(--space-14);
  padding-top: var(--space-10);
  border-top: 1px solid var(--gauss-line-200);
}

.article__faq h2 {
  font-family: var(--font-brand);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--gauss-ink-900);
  margin: 0 0 var(--space-6);
  padding-left: 0;
}

.article__faq h2::before {
  display: none;
}

.article__faq details {
  border-bottom: 1px solid var(--gauss-line-200);
}

.article__faq details + details {
  margin-top: 0;
}

.article__faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  font-family: var(--font-brand);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--gauss-ink-900);
  cursor: pointer;
  list-style: none;
  transition: color var(--duration-fast) var(--ease-smooth);
}

.article__faq summary::-webkit-details-marker {
  display: none;
}

.article__faq summary::after {
  content: "+";
  font-size: 1.4em;
  font-weight: 400;
  color: var(--gauss-ink-500);
  transition: transform var(--duration-fast) var(--ease-smooth);
  flex-shrink: 0;
  line-height: 1;
}

.article__faq details[open] summary::after {
  content: "\2212";
}

.article__faq summary:hover {
  color: var(--gauss-blue-700);
}

.article__faq details > div,
.article__faq details > p {
  padding: 0 0 var(--space-6);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--gauss-ink-700);
  margin: 0;
}


/* ==========================================================================
   10. ARTICLE SIDEBAR
   ========================================================================== */

.article__sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-8));
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

/* Table of contents */

.sidebar__toc {
  background: var(--gauss-white);
  border: 1px solid var(--gauss-line-200);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.sidebar__toc h4 {
  font-family: var(--font-brand);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gauss-ink-500);
  margin: 0 0 var(--space-4);
}

.sidebar__toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar__toc a {
  display: flex;
  align-items: center;
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--gauss-ink-700);
  text-decoration: none;
  padding: 0.375rem var(--space-3);
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: all var(--duration-base) var(--ease-smooth);
}

.sidebar__toc a:hover {
  color: var(--gauss-ink-900);
  background: var(--gauss-sky-50);
}

.sidebar__toc a.is-active {
  color: var(--gauss-blue-700);
  border-left-color: var(--gauss-blue-700);
  background: var(--gauss-sky-50);
  font-weight: 500;
}

/* Related posts */

.sidebar__related {
  background: var(--gauss-white);
  border: 1px solid var(--gauss-line-200);
  border-radius: var(--radius-md);
  padding: var(--space-6);
}

.sidebar__related h4 {
  font-family: var(--font-brand);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gauss-ink-500);
  margin: 0 0 var(--space-4);
}

.sidebar__related-item {
  display: flex;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
  padding: var(--space-3) 0;
  transition: color var(--duration-fast) var(--ease-smooth);
}

.sidebar__related-item + .sidebar__related-item {
  border-top: 1px solid var(--gauss-line-200);
}

.sidebar__related-item img {
  width: 64px;
  height: 48px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.sidebar__related-item span {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--gauss-ink-900);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--duration-fast) var(--ease-smooth);
}

.sidebar__related-item:hover span {
  color: var(--gauss-blue-700);
}


/* ==========================================================================
   11. PAGINATION
   ========================================================================== */

.blog-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-16);
  padding: 0 var(--container-padding);
}

.blog-pagination a,
.blog-pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--duration-base) var(--ease-smooth);
}

.blog-pagination a {
  color: var(--gauss-ink-700);
  background: var(--gauss-white);
  border: 1px solid var(--gauss-line-200);
}

.blog-pagination a:hover {
  color: var(--gauss-blue-700);
  border-color: var(--gauss-cyan-500);
  background: var(--gauss-sky-50);
}

.blog-pagination .is-current {
  background: var(--gauss-gradient-brand);
  color: var(--gauss-white);
  border: 1px solid transparent;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(16, 80, 160, 0.25);
}

.blog-pagination .pagination-prev,
.blog-pagination .pagination-next {
  font-weight: 600;
  gap: var(--space-1);
}

.blog-pagination .pagination-ellipsis {
  color: var(--gauss-ink-500);
  border: none;
  background: none;
}


/* ==========================================================================
   12. RESPONSIVE
   ========================================================================== */

/* ---- Tablet (1024px) ---- */

@media (max-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article__layout {
    grid-template-columns: 1fr;
    max-width: var(--container-narrow);
  }

  .article__sidebar {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .sidebar__toc,
  .sidebar__related {
    flex: 1;
    min-width: 260px;
  }
}

/* ---- Mobile landscape / small tablet (768px) ---- */

@media (max-width: 768px) {
  .blog-listing {
    padding-top: calc(var(--header-height) + var(--space-8));
  }

  .blog-listing__header {
    margin-bottom: var(--space-8);
  }

  .blog-listing__header h1 {
    font-size: 1.75rem;
  }

  .blog-grid {
    grid-template-columns: 1fr;
    gap: var(--space-5);
  }

  .blog-featured__card {
    grid-template-columns: 1fr;
  }

  .blog-featured__image {
    aspect-ratio: 16 / 9;
  }

  .blog-featured__content {
    padding: var(--space-6);
  }

  .blog-featured__content h2 {
    font-size: 1.375rem;
  }

  .article {
    padding-top: calc(var(--header-height) + var(--space-8));
  }

  .article__header h1 {
    font-size: 1.75rem;
  }

  .article__hero-image img {
    aspect-ratio: 16 / 9;
    border-radius: var(--radius-md);
  }

  .article__content h2 {
    font-size: 1.375rem;
    margin-top: var(--space-10);
  }

  .article__content .full-bleed {
    margin-left: calc(-1 * var(--container-padding));
    margin-right: calc(-1 * var(--container-padding));
    max-width: calc(100% + var(--container-padding) * 2);
    border-radius: 0;
  }

  .blog-listing__categories {
    justify-content: flex-start;
  }

  .blog-listing__categories-wrap::before,
  .blog-listing__categories-wrap::after {
    display: block;
  }
}

/* ---- Small mobile (480px) ---- */

@media (max-width: 480px) {
  .blog-listing__header {
    margin-bottom: var(--space-6);
  }

  .blog-listing__header h1 {
    font-size: 1.5rem;
  }

  .blog-featured__content {
    padding: var(--space-4);
  }

  .blog-featured__content h2 {
    font-size: 1.25rem;
  }

  .blog-card__body {
    padding: var(--space-4);
  }

  .article__header h1 {
    font-size: 1.5rem;
  }

  .article__hero-image {
    padding: 0;
  }

  .article__hero-image img {
    border-radius: 0;
    aspect-ratio: 16 / 9;
  }

  .article__content {
    font-size: 1rem;
  }

  .article__content h2 {
    padding-left: var(--space-5);
  }

  .article__content h2::before {
    height: 22px;
  }

  .article__content blockquote {
    padding: var(--space-4) var(--space-5);
  }

  .article__cta {
    padding: var(--space-6) var(--space-5);
  }

  .blog-pagination a,
  .blog-pagination span {
    min-width: 36px;
    height: 36px;
    font-size: 0.75rem;
  }
}