/* ============================================================
   ARTICLES — Listing + Detail Pages
   ============================================================ */

/* --- Category Color System --- */
:root {
  --cat-web:         #B9DAFF;
  --cat-web-dim:     rgba(185, 218, 255, 0.10);
  --cat-web-glow:    rgba(185, 218, 255, 0.06);
  --cat-ai:          #C4B5FD;
  --cat-ai-dim:      rgba(196, 181, 253, 0.10);
  --cat-ai-glow:     rgba(196, 181, 253, 0.06);
  --cat-design:      #FCA5A5;
  --cat-design-dim:  rgba(252, 165, 165, 0.10);
  --cat-design-glow: rgba(252, 165, 165, 0.06);
  --cat-productivity: #86EFAC;
  --cat-productivity-dim: rgba(134, 239, 172, 0.10);
  --cat-productivity-glow: rgba(134, 239, 172, 0.06);
  --cat-career:      #FDE68A;
  --cat-career-dim:  rgba(253, 230, 138, 0.10);
  --cat-career-glow: rgba(253, 230, 138, 0.06);

  --article-max-w:   720px;
  --article-toc-w:   220px;
}

/* ============================================================
   SCOPED RESET — Restore basics inside article containers
   that style.css global resets strip
   ============================================================ */

/* Links: restore color + underline */
.art-body a,
.art-hero__breadcrumb a,
.art-toc__link {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: rgba(185, 218, 255, 0.3);
  text-underline-offset: 3px;
}

.art-body a:hover,
.art-hero__breadcrumb a:hover,
.art-toc__link:hover {
  text-decoration-color: var(--color-accent);
}

/* Lists: restore bullets/numbers */
.art-body ul,
.art-body ol {
  list-style-type: disc;
  padding-left: 24px;
  margin-bottom: 20px;
}

.art-body ol li {
  list-style-type: decimal;
}

.art-body li {
  display: list-item;
  margin-bottom: 8px;
}

/* Paragraphs: restore spacing + line-height */
.art-body p {
  margin-bottom: 20px;
  line-height: 1.8;
}

/* Headings: restore spacing + color */
.art-body h2,
.art-body h3,
.art-body h4 {
  color: var(--color-white);
}

/* Inline code: restore appearance */
.art-body code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.88em;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--cat-web);
}

/* Code blocks: restore appearance */
.art-body pre {
  position: relative;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0;
  overflow-x: auto;
}

.art-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--color-text);
}

/* Blockquote: restore appearance */
.art-body blockquote {
  border-left: 2px solid var(--color-accent);
  padding: 16px 20px;
  margin: 28px 0;
  background: var(--color-accent-glow);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.art-body blockquote p {
  font-style: italic;
  color: var(--color-text-2);
  margin-bottom: 0;
  line-height: 1.8;
}

/* Images */
.art-body img {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin: 28px 0;
}

/* Horizontal rule */
.art-body hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: 40px 0;
}

/* ===========================================================
   LISTING PAGE
   =========================================================== */

/* --- Hero --- */
.articles-hero {
  padding: calc(var(--nav-height) + 80px) 24px 50px;
  text-align: center;
}

.articles-hero__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.articles-hero__title {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: 16px;
}

.articles-hero__subtitle {
  font-size: 1.05rem;
  color: var(--color-text-2);
  max-width: 540px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

/* --- Search --- */
.articles-search {
  position: relative;
  max-width: 420px;
  margin: 0 auto;
}

.articles-search__icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-3);
  pointer-events: none;
  width: 18px;
  height: 18px;
}

.articles-search__input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.88rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.articles-search__input::placeholder {
  color: var(--color-text-3);
}

.articles-search__input:focus {
  border-color: rgba(185, 218, 255, 0.3);
  box-shadow: 0 0 0 3px var(--cat-web-dim);
}

/* --- Filter Bar --- */
.articles-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.filter-pill {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-2);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: 8px 18px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  user-select: none;
  font-family: var(--font-sans);
}

.filter-pill:hover {
  color: var(--color-white);
  border-color: var(--color-border-2);
  background: var(--color-surface-3);
}

.filter-pill.active {
  color: var(--color-accent);
  border-color: rgba(185, 218, 255, 0.3);
  background: var(--cat-web-dim);
}

.filter-pill__count {
  font-size: 0.7rem;
  opacity: 0.6;
  margin-left: 4px;
}

/* Category-specific active states */
.filter-pill[data-filter="web"].active {
  color: var(--cat-web);
  border-color: rgba(185, 218, 255, 0.3);
  background: var(--cat-web-dim);
}

.filter-pill[data-filter="ai"].active {
  color: var(--cat-ai);
  border-color: rgba(196, 181, 253, 0.3);
  background: var(--cat-ai-dim);
}

.filter-pill[data-filter="design"].active {
  color: var(--cat-design);
  border-color: rgba(252, 165, 165, 0.3);
  background: var(--cat-design-dim);
}

.filter-pill[data-filter="productivity"].active {
  color: var(--cat-productivity);
  border-color: rgba(134, 239, 172, 0.3);
  background: var(--cat-productivity-dim);
}

.filter-pill[data-filter="career"].active {
  color: var(--cat-career);
  border-color: rgba(253, 230, 138, 0.3);
  background: var(--cat-career-dim);
}

/* --- Articles Container --- */
.articles-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px 100px;
}

/* --- No Results --- */
.articles-no-results {
  text-align: center;
  padding: 60px 20px;
  display: none;
}

.articles-no-results.visible {
  display: block;
}

.articles-no-results__icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
  opacity: 0.3;
}

.articles-no-results__text {
  font-size: 1rem;
  color: var(--color-text-2);
}

.articles-no-results__sub {
  font-size: 0.85rem;
  color: var(--color-text-3);
  margin-top: 8px;
}

/* --- Featured Article --- */
.featured-article {
  display: block;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  text-decoration: none;
  border: 1px solid var(--color-border);
  transition: border-color var(--transition), transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.featured-article:hover {
  border-color: var(--color-border-2);
  transform: translateY(-4px);
}

.featured-article__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.featured-article__gradient {
  position: absolute;
  inset: 0;
  opacity: 0.7;
}

.featured-article__gradient--web {
  background: linear-gradient(135deg, var(--cat-web-glow) 0%, transparent 50%, var(--cat-web-dim) 100%);
}

.featured-article__gradient--ai {
  background: linear-gradient(135deg, var(--cat-ai-glow) 0%, transparent 50%, var(--cat-ai-dim) 100%);
}

.featured-article__gradient--design {
  background: linear-gradient(135deg, var(--cat-design-glow) 0%, transparent 50%, var(--cat-design-dim) 100%);
}

.featured-article__gradient--productivity {
  background: linear-gradient(135deg, var(--cat-productivity-glow) 0%, transparent 50%, var(--cat-productivity-dim) 100%);
}

.featured-article__gradient--career {
  background: linear-gradient(135deg, var(--cat-career-glow) 0%, transparent 50%, var(--cat-career-dim) 100%);
}

.featured-article__noise {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  background-size: 128px;
  opacity: 0.5;
}

.featured-article__content {
  position: relative;
  z-index: 1;
  padding: 48px 40px;
}

.featured-article__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
  backdrop-filter: blur(8px);
}

.featured-article__badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.featured-article__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.featured-article__cat {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.featured-article__cat--web {
  color: var(--cat-web);
  background: var(--cat-web-dim);
}

.featured-article__cat--ai {
  color: var(--cat-ai);
  background: var(--cat-ai-dim);
}

.featured-article__cat--design {
  color: var(--cat-design);
  background: var(--cat-design-dim);
}

.featured-article__cat--productivity {
  color: var(--cat-productivity);
  background: var(--cat-productivity-dim);
}

.featured-article__cat--career {
  color: var(--cat-career);
  background: var(--cat-career-dim);
}

.featured-article__date,
.featured-article__read {
  font-size: 0.8rem;
  color: var(--color-text-3);
}

.featured-article__title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.02em;
  line-height: 1.25;
  margin-bottom: 14px;
}

.featured-article__excerpt {
  font-size: 1rem;
  color: var(--color-text-2);
  line-height: 1.7;
  max-width: 600px;
  margin-bottom: 24px;
}

.featured-article__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: gap var(--transition);
}

.featured-article:hover .featured-article__cta {
  gap: 12px;
}

.featured-article__cta svg {
  width: 14px;
  height: 14px;
}

/* --- Articles Grid --- */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* --- Article Card --- */
.article-card {
  position: relative;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  overflow: hidden;
  transition: border-color var(--transition), transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.article-card:hover {
  border-color: var(--color-border-2);
  transform: translateY(-4px);
}

.article-card__glow {
  position: absolute;
  top: -60px;
  right: -60px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  opacity: 0;
  filter: blur(50px);
  transition: opacity 0.5s ease;
  pointer-events: none;
}

.article-card:hover .article-card__glow {
  opacity: 1;
}

.article-card__glow--web { background: var(--cat-web-glow); }
.article-card__glow--ai { background: var(--cat-ai-glow); }
.article-card__glow--design { background: var(--cat-design-glow); }
.article-card__glow--productivity { background: var(--cat-productivity-glow); }
.article-card__glow--career { background: var(--cat-career-glow); }

.article-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.article-card__cat {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.article-card__cat--web {
  color: var(--cat-web);
  background: var(--cat-web-dim);
}

.article-card__cat--ai {
  color: var(--cat-ai);
  background: var(--cat-ai-dim);
}

.article-card__cat--design {
  color: var(--cat-design);
  background: var(--cat-design-dim);
}

.article-card__cat--productivity {
  color: var(--cat-productivity);
  background: var(--cat-productivity-dim);
}

.article-card__cat--career {
  color: var(--cat-career);
  background: var(--cat-career-dim);
}

.article-card__read-time {
  font-size: 0.75rem;
  color: var(--color-text-3);
}

.article-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-white);
  letter-spacing: -0.01em;
  line-height: 1.4;
  margin-bottom: 10px;
}

.article-card__title .word {
  display: inline-block;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.article-card:not(.is-visible) .article-card__title .word {
  opacity: 0;
  transform: translateY(12px);
}

.article-card.is-visible .article-card__title .word {
  opacity: 1;
  transform: translateY(0);
}

.article-card__excerpt {
  font-size: 0.88rem;
  color: var(--color-text-2);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 20px;
}

.article-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.article-card__date {
  font-size: 0.78rem;
  color: var(--color-text-3);
}

.article-card__link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.article-card:hover .article-card__link {
  gap: 10px;
}

.article-card__link svg {
  width: 12px;
  height: 12px;
}

.article-card.is-hidden {
  display: none;
}

/* ===========================================================
   ARTICLE DETAIL PAGE
   =========================================================== */

/* --- Progress Bar --- */
.article-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-accent);
  z-index: 1100;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px var(--cat-web-dim);
}

/* --- Article Hero --- */
.art-hero {
  padding: calc(var(--nav-height) + 80px) 24px 48px;
  text-align: center;
}

.art-hero__breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--color-text-3);
  margin-bottom: 28px;
}

.art-hero__breadcrumb-sep {
  opacity: 0.4;
  font-size: 0.7rem;
}

.art-hero__cat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
}

.art-hero__cat--web {
  color: var(--cat-web);
  background: var(--cat-web-dim);
}

.art-hero__cat--ai {
  color: var(--cat-ai);
  background: var(--cat-ai-dim);
}

.art-hero__cat--design {
  color: var(--cat-design);
  background: var(--cat-design-dim);
}

.art-hero__cat--productivity {
  color: var(--cat-productivity);
  background: var(--cat-productivity-dim);
}

.art-hero__cat--career {
  color: var(--cat-career);
  background: var(--cat-career-dim);
}

.art-hero__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-white);
  line-height: 1.15;
  margin-bottom: 20px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.art-hero__meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--color-text-3);
  flex-wrap: wrap;
}

.art-hero__meta-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-text-3);
  opacity: 0.5;
}

.art-hero__author {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-2);
}

.art-hero__author-img {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border);
}

/* --- Article Content Layout --- */
.art-content {
  display: flex;
  gap: 48px;
  max-width: calc(var(--article-max-w) + var(--article-toc-w) + 80px);
  margin: 0 auto;
  padding: 0 24px 100px;
  align-items: flex-start;
}

/* --- Table of Contents --- */
.art-toc {
  position: sticky;
  top: calc(var(--nav-height) + 32px);
  width: var(--article-toc-w);
  flex-shrink: 0;
  padding: 20px 0;
}

.art-toc__label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-3);
  margin-bottom: 14px;
}

.art-toc__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.art-toc__link {
  font-size: 0.8rem;
  padding: 5px 0 5px 12px;
  border-left: 1.5px solid var(--color-border);
  transition: color var(--transition), border-color var(--transition);
  line-height: 1.4;
}

.art-toc__link.active {
  border-left-color: var(--color-accent);
}

.art-toc__link--h3 {
  padding-left: 24px;
  font-size: 0.76rem;
}

/* --- Article Body --- */
.art-body {
  flex: 1;
  max-width: var(--article-max-w);
}

.art-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 48px 0 16px;
  padding-top: 16px;
  scroll-margin-top: calc(var(--nav-height) + 20px);
  position: relative;
}

.art-body h2::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-accent);
  border-radius: 1px;
  opacity: 0;
  transition: opacity var(--transition);
}

.art-body h2:target::before,
.art-body h2.is-active::before {
  opacity: 1;
}

.art-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 32px 0 12px;
  scroll-margin-top: calc(var(--nav-height) + 20px);
}

.art-body strong {
  color: var(--color-white);
  font-weight: 600;
}

/* --- Share Section --- */
.art-share {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 28px 0;
  margin: 40px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.art-share__label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-2);
  margin-right: 4px;
}

.art-share__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-2);
  transition: all var(--transition);
  cursor: pointer;
}

.art-share__btn:hover {
  color: var(--color-white);
  border-color: var(--color-border-2);
  background: var(--color-surface-3);
}

.art-share__btn svg {
  width: 16px;
  height: 16px;
}

/* Code copy button */
.art-body .code-copy {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-3);
  padding: 5px 10px;
  font-size: 0.72rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition);
}

.art-body .code-copy:hover {
  color: var(--color-text);
  border-color: var(--color-border-2);
}

.art-body .code-copy.copied {
  color: var(--cat-productivity);
  border-color: var(--cat-productivity);
}

/* --- Author Card --- */
.art-author {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 28px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin: 40px 0;
}

.art-body .art-author__img {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
  flex-shrink: 0;
}

.art-author__info {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.art-author__name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 4px;
}

.art-author__bio {
  font-size: 0.88rem;
  color: var(--color-text-2);
  line-height: 1.6;
  margin-bottom: 10px;
}

.art-author__socials {
  display: flex;
  gap: 10px;
}

.art-author__social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  color: var(--color-text-3);
  transition: all var(--transition);
}

.art-author__social:hover {
  color: var(--color-accent);
  border-color: rgba(185, 218, 255, 0.3);
}

.art-author__social svg {
  width: 14px;
  height: 14px;
}

/* --- Related Articles --- */
.art-related {
  margin-top: 60px;
}

.art-related__label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-3);
  margin-bottom: 20px;
}

.art-related__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.art-related-card {
  display: block;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  text-decoration: none;
  transition: border-color var(--transition), transform 0.3s ease;
}

.art-related-card:hover {
  border-color: var(--color-border-2);
  transform: translateY(-2px);
}

.art-related-card__cat {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.art-related-card__title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-white);
  line-height: 1.4;
  margin-bottom: 8px;
}

.art-related-card__date {
  font-size: 0.75rem;
  color: var(--color-text-3);
}

/* --- Back to Top --- */
.art-back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease, color var(--transition), border-color var(--transition);
  pointer-events: none;
  z-index: 100;
}

.art-back-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.art-back-top:hover {
  color: var(--color-accent);
  border-color: rgba(185, 218, 255, 0.3);
}

.art-back-top svg {
  width: 16px;
  height: 16px;
}

/* ===========================================================
   RESPONSIVE
   =========================================================== */

@media (max-width: 1024px) {
  .art-toc {
    display: none;
  }

  .art-content {
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }

  .featured-article__content {
    padding: 32px 24px;
  }

  .featured-article__title {
    font-size: 1.4rem;
  }

  .art-hero {
    padding: calc(var(--nav-height) + 60px) 16px 36px;
  }

  .art-hero__title {
    font-size: 1.8rem;
  }

  .art-related__grid {
    grid-template-columns: 1fr;
  }

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

  .art-author__socials {
    justify-content: center;
  }

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

  .art-body h2::before {
    display: none;
  }

  .art-back-top {
    bottom: 20px;
    right: 20px;
  }

  .articles-filters {
    gap: 6px;
  }

  .filter-pill {
    padding: 6px 14px;
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .articles-hero {
    padding: calc(var(--nav-height) + 60px) 16px 36px;
  }

  .articles-hero__title {
    font-size: 2rem;
  }

  .articles-container {
    padding: 0 16px 80px;
  }

  .article-card {
    padding: 22px;
  }

  .art-content {
    padding: 0 16px 80px;
  }

  .art-body p,
  .art-body li {
    font-size: 1rem;
  }
}

/* ===========================================================
   ANIMATIONS
   =========================================================== */

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.article-card {
  animation: fade-in-up 0.5s ease both;
}

.article-card:nth-child(1) { animation-delay: 0s; }
.article-card:nth-child(2) { animation-delay: 0.08s; }
.article-card:nth-child(3) { animation-delay: 0.16s; }
.article-card:nth-child(4) { animation-delay: 0.24s; }
.article-card:nth-child(5) { animation-delay: 0.32s; }
.article-card:nth-child(6) { animation-delay: 0.4s; }

/* Filter animation */
.article-card.filtering {
  animation: none;
  opacity: 0;
  transform: scale(0.96);
}

.article-card.filter-shown {
  animation: filter-reveal 0.35s ease forwards;
}

@keyframes filter-reveal {
  to {
    opacity: 1;
    transform: scale(1);
  }
}