/* ============================================================================
   Blog Listing
   Featured posts, categories, cards, and async states
   ============================================================================ */

/* ============================================================================
   BLOG PAGE STYLES
   ============================================================================ */

.legacy-blog-page {
  --blog-section-gap: clamp(60px, 10vw, 100px);
}

.blog-posts {
  padding: var(--blog-section-gap) 0;
  background: var(--white);
}

.blog-posts .container {
  max-width: var(--content-max, 1200px);
  margin-inline: auto;
  padding-inline: var(--gutter, clamp(20px, 4vw, 48px));
}

.featured-post {
  padding: var(--blog-section-gap) 0;
  background: var(--gray-50);
}

.featured-post .container {
  max-width: var(--content-max, 1200px);
  margin-inline: auto;
  padding-inline: var(--gutter, clamp(20px, 4vw, 48px));
}

.featured-content {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}


.featured-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.featured-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.featured-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 6px;
}

.featured-badge::before {
  content: "★";
  font-size: 0.75rem;
}

.featured-text {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.featured-text h2 {
  font-size: clamp(1.625rem, 3.2vw, 2.25rem);
  color: var(--primary-navy);
  line-height: 1.25;
  margin: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.featured-text p {
  color: var(--gray-600);
  line-height: 1.75;
  font-size: 1.05rem;
  margin: 0;
  text-align: justify;
}

.featured-text .post-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.featured-text .post-category {
  background: var(--primary-dark);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.featured-text .post-date {
  color: var(--gray-500);
  font-size: 0.875rem;
}

.post-author {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.author-name {
  font-weight: 600;
  color: var(--primary-navy);
  display: block;
}

.author-title {
  color: var(--gray-500);
  font-size: 0.875rem;
}

.blog-categories {
  padding: 40px 0;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
}

.blog-filter-bar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  width: 100%;
  margin-bottom: 12px;
}

.blog-search {
  display: flex;
  justify-content: center;
}

.blog-search input {
  width: min(420px, 100%);
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: var(--transition-fast);
}

.blog-search input:focus {
  outline: none;
  border-color: var(--primary-dark);
  box-shadow: 0 0 0 3px rgba(18, 78, 102, 0.12);
}

.blog-category-select select {
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  background: var(--white);
  color: var(--gray-700);
  min-width: 190px;
  transition: var(--transition-fast);
}

.blog-category-select select:focus {
  outline: none;
  border-color: var(--primary-dark);
  box-shadow: 0 0 0 3px rgba(18, 78, 102, 0.12);
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr));
  gap: clamp(1.75rem, 4vw, 2.5rem);
}

.post-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(13, 27, 42, 0.06);
  border: 1px solid rgba(13, 27, 42, 0.04);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.post-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(13, 27, 42, 0.12);
  border-color: rgba(18, 78, 102, 0.15);
}

.post-image {
  height: 190px;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}

.post-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-normal);
}

.post-card:hover .post-image img {
  transform: scale(1.05);
}

.post-content {
  padding: clamp(22px, 4vw, 28px);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.post-content h3 {
  font-size: 1.2rem;
  color: var(--primary-navy);
  margin-bottom: 12px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.post-content p {
  color: var(--gray-600);
  line-height: 1.65;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 0.95rem;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag {
  background: var(--gray-100);
  color: var(--gray-600);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

.read-more {
  color: var(--primary-dark);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-fast);
  margin-top: auto;
  padding-top: 14px;
  font-size: 0.9rem;
}

.read-more:hover {
  color: var(--primary-blue);
  gap: 12px;
}

.read-more::after {
  content: '\2192';
  transition: transform var(--transition-fast);
}

.read-more:hover::after {
  transform: translateX(4px);
}

.load-more-section {
  text-align: center;
  margin-top: 60px;
}

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.pagination-status {
  color: var(--gray-600);
  font-weight: 600;
}

.posts-status {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.posts-loading,
.posts-empty {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-muted, #6b7280);
  font-size: 0.95rem;
}

.posts-loading .spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(18, 78, 102, 0.15);
  border-top-color: #124e66;
  border-radius: 999px;
  animation: posts-spin 0.8s linear infinite;
}

.posts-empty {
  flex-direction: column;
  text-align: center;
  color: #5f717a;
}

.posts-empty i {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  color: #124e66;
}

.is-hidden {
  display: none !important;
}

.load-more-section .btn.is-hidden {
  display: none !important;
}

@keyframes posts-spin {
  to {
    transform: rotate(360deg);
  }
}

.newsletter-section {
  background: var(--gradient-primary);
  padding: var(--blog-section-gap) 0;
  text-align: center;
}

.newsletter-section .container {
  max-width: 720px;
  margin-inline: auto;
  padding-inline: var(--gutter, clamp(20px, 4vw, 48px));
}

.newsletter-content h2 {
  color: var(--white);
  font-size: clamp(1.875rem, 4.5vw, 2.5rem);
  margin-bottom: 20px;
  font-weight: 700;
}

.newsletter-content p {
  color: rgba(255, 255, 255, 0.9);
  font-size: clamp(1rem, 2vw, 1.1rem);
  margin-bottom: 36px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.newsletter-form {
  display: flex;
  gap: clamp(0.75rem, 3vw, 1rem);
  max-width: 440px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 12px 16px;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1rem;
}

.newsletter-form button {
  white-space: nowrap;
}

/* Vietnamese bullet points */
.service-card li {
  line-height: 1.6;
  word-break: keep-all;
}

/* Fallback font loading */
@font-face {
  font-family: 'Vietnamese Fallback';
  src: local('Arial'), local('Helvetica Neue'), local('Segoe UI');
  font-display: swap;
  unicode-range: U+1EA0-1EF9, U+0300-036F; /* Vietnamese characters */
}

/* Font loading optimization */
.hero-title,
.section-header h2 {
  font-display: swap;
}