body { line-height: 1.8; }

/* === Article Header === */
.article-header {
  background: linear-gradient(135deg, #faf9f7 0%, #f5f3ef 100%);
  padding: 100px 0 50px;
  margin-top: 70px;
  border-bottom: 1px solid #e0dcd5;
}

.article-category {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #c0392b;
  margin-bottom: 1rem;
}

.article-title {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: 3rem;
  line-height: 1.2;
  color: #2c3e50;
  margin-bottom: 1.5rem;
}

.article-meta {
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  color: #5a6c7e;
  margin-bottom: 1rem;
}

.article-meta-item {
  display: inline-block;
  margin-right: 1.5rem;
}

.article-meta-item i { color: #c0392b; margin-right: 0.5rem; width: 16px; }

.badge-custom {
  font-family: 'Inter', sans-serif;
  font-size: 0.7rem;
  padding: 0.25rem 0.75rem;
  border-radius: 2px;
  background: #f0ece6;
  color: #5a6c7e;
  margin-right: 0.5rem;
}

.badge-custom.doi { background: #2c3e50; color: #ffffff; }

/* === Author === */
.author-card {
  background: #ffffff;
  border: 1px solid #e0dcd5;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.author-name {
  font-family: 'Playfair Display', serif;
  font-weight: 600;
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 0.25rem;
}

.author-affiliation {
  font-family: 'Inter', sans-serif;
  font-size: 0.8rem;
  color: #7f8c8d;
  margin-bottom: 0.75rem;
}

.author-orcid {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  color: #c0392b;
  text-decoration: none;
}

/* === Article Body === */
.article-content { padding: 3rem 0; }
.article-body { font-size: 1.1rem; }

.article-body h2 {
  font-family: 'Playfair Display', serif;
  font-weight: 600;
  font-size: 1.8rem;
  color: #2c3e50;
  margin: 2rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #e0dcd5;
}

.article-body h3 {
  font-family: 'Playfair Display', serif;
  font-weight: 500;
  font-size: 1.4rem;
  color: #34495e;
  margin: 1.5rem 0 1rem;
}

.article-body p { margin-bottom: 1.2rem; text-align: justify; }

.article-body blockquote {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 1.2rem;
  color: #5a6c7e;
  margin: 2rem 0;
  padding: 1rem 2rem;
  border-left: 3px solid #c0392b;
  background: #f8f7f5;
}

.article-body .footnote {
  font-size: 0.85rem;
  color: #7f8c8d;
  border-top: 1px solid #e0dcd5;
  margin-top: 2rem;
  padding-top: 1rem;
}

/* === Sidebar === */
.article-sidebar { position: sticky; top: 100px; }

.table-of-contents { list-style: none; padding: 0; }
.table-of-contents li { margin-bottom: 0.5rem; }
.table-of-contents a {
  color: #5a6c7e;
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}
.table-of-contents a:hover { color: #c0392b; padding-left: 5px; }

.citation-box {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  background: #f8f7f5;
  padding: 1rem;
  margin-top: 1rem;
}

/* === References === */
.references-list {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid #e0dcd5;
}

.references-list h3 {
  font-family: 'Playfair Display', serif;
  font-weight: 600;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.reference-item {
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
  padding-left: 2rem;
  text-indent: -2rem;
  color: #5a6c7e;
}

@media (max-width: 991px) {
  .article-title { font-size: 2.2rem; }
}

@media (max-width: 768px) {
  .article-header { padding: 80px 0 30px; }
  .article-title { font-size: 1.8rem; }
  .article-meta-item { display: block; margin-bottom: 0.5rem; }
  .article-sidebar { position: static; margin-top: 2rem; }
  .article-body { font-size: 1rem; }
  .article-body blockquote { padding: 0.75rem 1rem; font-size: 1rem; }
  .article-content { padding: 1.5rem 0; }
  .badge-custom { margin-bottom: 0.25rem; display: inline-block; }
  .reference-item { padding-left: 1rem; text-indent: -1rem; }
}