/* =====================================================================
   THE BUSINESS TALE — ARTICLE STYLES
   article.css: Article page layout, body typography, TOC, social share,
   related articles, inline ads, pull quotes
   ===================================================================== */

/* -----------------------------------------------------------------------
   1. ARTICLE PAGE LAYOUT
   ----------------------------------------------------------------------- */

.article-page {
  padding-top: 0;
  padding-bottom: var(--space-16);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-10);
  align-items: start;
}

.article-main {
  min-width: 0; /* prevent grid blowout */
}

/* -----------------------------------------------------------------------
   2. ARTICLE HEADER
   ----------------------------------------------------------------------- */

.article-header {
  padding: var(--space-8) 0 var(--space-6);
}

.article-header__category {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
  text-decoration: none;
}

.article-header__category:hover {
  color: var(--color-accent-hover);
}

.article-header__h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: var(--leading-snug);
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
  letter-spacing: -0.02em;
}

.article-header__excerpt {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
  font-weight: 400;
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-4);
}

/* Article meta bar */
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding: var(--space-4) 0;
  border-top: var(--border-thin);
  border-bottom: var(--border-thin);
}

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

.article-meta__avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--color-border);
  flex-shrink: 0;
}

.article-meta__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-meta__author-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.article-meta__author-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
}

.article-meta__author-name a {
  color: inherit;
  transition: color var(--transition-fast);
}

.article-meta__author-name a:hover {
  color: var(--color-accent);
}

.article-meta__dates {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.article-meta__divider {
  width: 1px;
  height: 24px;
  background: var(--color-border);
}

.article-meta__info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.article-meta__info-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* -----------------------------------------------------------------------
   3. FEATURED IMAGE
   ----------------------------------------------------------------------- */

.article-featured-image {
  margin-bottom: var(--space-8);
}

.article-featured-image__wrap {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: var(--color-surface-alt);
}

.article-featured-image__wrap::before {
  content: '';
  display: block;
  padding-top: 52%;
}

.article-featured-image__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.article-featured-image__caption {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-style: italic;
  text-align: center;
}

/* -----------------------------------------------------------------------
   4. ARTICLE BODY TYPOGRAPHY
   ----------------------------------------------------------------------- */

.article-body {
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.article-body > * + * {
  margin-top: var(--space-5);
}

.article-body h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.5vw, 1.625rem);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: var(--space-10);
  margin-bottom: var(--space-4);
  line-height: var(--leading-snug);
  letter-spacing: -0.01em;
}

.article-body h3 {
  font-family: var(--font-sans);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}

.article-body h4 {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

.article-body p {
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

.article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

.article-body a:hover {
  color: var(--color-accent-hover);
}

.article-body ul,
.article-body ol {
  padding-left: var(--space-6);
  line-height: var(--leading-relaxed);
}

.article-body li {
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
}

.article-body li::marker {
  color: var(--color-accent);
}

.article-body strong {
  font-weight: 600;
  color: var(--color-text-primary);
}

.article-body em {
  font-style: italic;
}

.article-body img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin-block: var(--space-6);
}

/* -----------------------------------------------------------------------
   5. PULL QUOTE / BLOCKQUOTE
   ----------------------------------------------------------------------- */

.article-body blockquote {
  margin-block: var(--space-8);
  padding: var(--space-6) var(--space-6) var(--space-6) var(--space-8);
  border-left: 4px solid var(--color-accent);
  background: var(--color-surface-alt);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-body blockquote p {
  font-family: var(--font-serif);
  font-size: var(--text-xl);
  font-style: italic;
  font-weight: 400;
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
}

.article-body blockquote cite {
  display: block;
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  font-style: normal;
  font-weight: 600;
  color: var(--color-text-muted);
}

/* Pull quote — for inline use */
.pull-quote {
  margin-block: var(--space-8);
  padding: var(--space-6);
  border-top: 3px solid var(--color-accent);
  border-bottom: 3px solid var(--color-accent);
  text-align: center;
}

.pull-quote p {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2.5vw, 1.625rem);
  font-style: italic;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
}

/* -----------------------------------------------------------------------
   6. TABLE OF CONTENTS
   ----------------------------------------------------------------------- */

.toc {
  background: var(--color-surface-alt);
  border: var(--border-thin);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-5);
  margin-bottom: var(--space-8);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.toc__title {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.toc__toggle {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
  color: var(--color-accent);
  cursor: pointer;
}

.toc__list {
  list-style: none;
  counter-reset: toc-counter;
}

.toc__item {
  counter-increment: toc-counter;
  display: flex;
  gap: var(--space-2);
  padding: var(--space-1) 0;
}

.toc__item::before {
  content: counter(toc-counter) ".";
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  min-width: 20px;
  margin-top: 2px;
}

.toc__link {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-snug);
  transition: color var(--transition-fast);
}

.toc__link:hover {
  color: var(--color-accent);
}

.toc__sub {
  list-style: none;
  padding-left: var(--space-5);
  margin-top: var(--space-1);
}

.toc__sub .toc__item::before {
  display: none;
}

.toc__sub .toc__link {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* -----------------------------------------------------------------------
   7. INLINE AD SLOT
   ----------------------------------------------------------------------- */

.article-ad {
  margin-block: var(--space-8);
  text-align: center;
}

.article-ad__label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  display: block;
  margin-bottom: var(--space-2);
}

/* -----------------------------------------------------------------------
   8. SOCIAL SHARE
   ----------------------------------------------------------------------- */

.social-share {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) 0;
  border-top: var(--border-thin);
  border-bottom: var(--border-thin);
  margin-block: var(--space-8);
  flex-wrap: wrap;
}

.social-share__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-right: var(--space-2);
}

.social-share__btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: opacity var(--transition-fast);
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.social-share__btn:hover {
  opacity: 0.85;
}

.social-share__btn--x {
  background: #000;
  color: #fff;
}

.social-share__btn--linkedin {
  background: #0077b5;
  color: #fff;
}

.social-share__btn--facebook {
  background: #1877f2;
  color: #fff;
}

.social-share__btn--copy {
  background: var(--color-surface-alt);
  color: var(--color-text-primary);
  border: var(--border-thin);
}

/* -----------------------------------------------------------------------
   9. RELATED ARTICLES
   ----------------------------------------------------------------------- */

.related-articles {
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 3px solid var(--color-text-primary);
}

.related-articles__title {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

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

/* -----------------------------------------------------------------------
   10. ARTICLE SIDEBAR
   ----------------------------------------------------------------------- */

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
}

/* -----------------------------------------------------------------------
   11. ARTICLE FOOTER (prev/next nav)
   ----------------------------------------------------------------------- */

.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-10);
  padding-top: var(--space-6);
  border-top: var(--border-thin);
}

.article-nav__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4);
  border: var(--border-thin);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.article-nav__item:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
}

.article-nav__item--next {
  text-align: right;
}

.article-nav__dir {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.article-nav__title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: var(--leading-snug);
}

/* -----------------------------------------------------------------------
   12. RESPONSIVE — ARTICLE
   ----------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }

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

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

  .related-articles__grid {
    grid-template-columns: 1fr;
  }

  .article-header__h1 {
    font-size: 1.75rem;
  }

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

  .article-meta {
    gap: var(--space-3);
  }

  .article-meta__divider {
    display: none;
  }
}

/* -----------------------------------------------------------------------
   13. LEGAL / STATIC PAGE BODY
   ----------------------------------------------------------------------- */

.static-body {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: var(--article-max);
}

.static-body > * + * {
  margin-top: var(--space-5);
}

.static-body h2 {
  font-family: var(--font-sans);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  margin-top: var(--space-10);
  margin-bottom: var(--space-3);
  padding-top: var(--space-4);
  border-top: var(--border-light);
}

.static-body h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

.static-body ul,
.static-body ol {
  padding-left: var(--space-6);
}

.static-body li {
  margin-bottom: var(--space-2);
}

.static-body a {
  color: var(--color-accent);
  text-decoration: underline;
}

.static-body a:hover {
  color: var(--color-accent-hover);
}

.static-body strong {
  font-weight: 600;
  color: var(--color-text-primary);
}