/* ==========================================================================
   📚 EvaGrade Blog Stylesheet (blog.css)
   ========================================================================== */

/* Page Padding */
.blog-page {
  padding-top: 100px;
  padding-bottom: 90px;
  min-height: 80vh;
}

/* Breadcrumbs */
.blog-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: var(--color-text-sub);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.blog-breadcrumbs a {
  color: var(--color-text-sub);
  text-decoration: none;
  transition: var(--transition-smooth);
}

.blog-breadcrumbs a:hover {
  color: #c7d2fe;
}

.blog-breadcrumbs .sep {
  opacity: 0.4;
  font-size: 11px;
}

.blog-breadcrumbs .current {
  color: #ffffff;
  font-weight: 500;
  max-width: 300px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Blog Hero (Listing) */
.blog-hero {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 50px auto;
}

.blog-hero h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
}

.blog-hero p {
  font-size: 18px;
  color: var(--color-text-sub);
  line-height: 1.6;
}

/* Tag Filter Bar */
.blog-filter-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.blog-tag-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--color-text-sub);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.blog-tag-btn:hover {
  background: rgba(99, 102, 241, 0.15);
  color: #ffffff;
  border-color: rgba(99, 102, 241, 0.4);
}

.blog-tag-btn.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 0 16px rgba(99, 102, 241, 0.4);
}

/* Blog Cards Grid */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
  margin-bottom: 60px;
}

@media (max-width: 640px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition-smooth);
  backdrop-filter: blur(12px);
  text-decoration: none;
  color: inherit;
}

.blog-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glass-hover);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), var(--shadow-glow);
}

.blog-card-img-wrap {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: #0d1322;
  position: relative;
}

.blog-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.blog-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12.5px;
  color: var(--color-text-sub);
  margin-bottom: 12px;
}

.blog-card-meta .tag-badge {
  background: rgba(99, 102, 241, 0.15);
  color: #c7d2fe;
  padding: 3px 10px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 0.02em;
}

.blog-card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-main);
  line-height: 1.35;
  margin-bottom: 12px;
  transition: color 0.2s ease;
}

.blog-card:hover .blog-card-title {
  color: #818cf8;
}

.blog-card-desc {
  font-size: 14.5px;
  color: var(--color-text-sub);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}

.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 13px;
  color: var(--color-text-sub);
}

.blog-card-readmore {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s ease;
}

.blog-card:hover .blog-card-readmore {
  gap: 8px;
  color: #a5b4fc;
}

/* ==========================================================================
   📖 Single Post Layout
   ========================================================================== */

.post-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 48px;
  align-items: start;
  margin-top: 10px;
}

@media (max-width: 992px) {
  .post-layout {
    grid-template-columns: 1fr;
  }
}

.post-main {
  min-width: 0;
}

.post-header {
  margin-bottom: 36px;
  padding-bottom: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.post-tag {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: #c7d2fe;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 6px;
}

.post-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #ffffff;
}

.post-meta-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--color-text-sub);
}

.post-author-meta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.post-author-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #ffffff;
  font-size: 14px;
}

/* Post Featured Image Banner */
.post-banner-img {
  width: 100%;
  max-height: 440px;
  border-radius: 18px;
  object-fit: cover;
  border: 1px solid var(--border-glass);
  margin-bottom: 36px;
  background: #0d1322;
}

/* Post Content Typography */
.post-content {
  font-size: 17px;
  line-height: 1.8;
  color: #e2e8f0;
}

.post-content h2 {
  font-size: 26px;
  font-weight: 800;
  color: #ffffff;
  margin-top: 48px;
  margin-bottom: 18px;
  scroll-margin-top: 100px;
  position: relative;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.post-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: #c7d2fe;
  margin-top: 32px;
  margin-bottom: 14px;
  scroll-margin-top: 100px;
}

.post-content p {
  margin-bottom: 22px;
}

.post-content strong {
  color: #ffffff;
}

.post-content ul, .post-content ol {
  margin-bottom: 24px;
  padding-left: 28px;
}

.post-content li {
  margin-bottom: 10px;
  line-height: 1.7;
}

.post-content a {
  color: #818cf8;
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.post-content a:hover {
  color: #c7d2fe;
}

.post-content blockquote {
  border-left: 4px solid var(--color-primary);
  background: rgba(99, 102, 241, 0.08);
  padding: 18px 24px;
  border-radius: 0 14px 14px 0;
  margin: 28px 0;
  font-style: italic;
  color: #cbd5e1;
}

/* Post Callout Boxes */
.callout-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 22px 24px;
  margin: 28px 0;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  backdrop-filter: blur(10px);
}

.callout-box.tip {
  border-left: 4px solid var(--color-success);
  background: rgba(16, 185, 129, 0.06);
}

.callout-box.important {
  border-left: 4px solid var(--color-primary);
  background: rgba(99, 102, 241, 0.08);
}

.callout-box.warning {
  border-left: 4px solid var(--color-warning);
  background: rgba(245, 158, 11, 0.08);
}

.callout-icon {
  font-size: 24px;
  flex-shrink: 0;
  line-height: 1;
}

.callout-body {
  flex: 1;
  font-size: 15.5px;
  line-height: 1.6;
}

.callout-body strong {
  display: block;
  margin-bottom: 6px;
  color: #ffffff;
  font-size: 16px;
}

/* Post Tables */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 30px 0;
  background: var(--bg-card);
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  font-size: 15px;
}

.post-content th {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  font-weight: 700;
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border-glass);
}

.post-content td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: #cbd5e1;
}

.post-content tr:last-child td {
  border-bottom: none;
}

.post-content tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Post Code */
.post-content pre {
  background: #070a12;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 14px;
  padding: 18px 22px;
  margin: 24px 0;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace, Consolas, Courier;
  font-size: 14px;
  line-height: 1.6;
  color: #e2e8f0;
}

.post-content code {
  font-family: 'JetBrains Mono', monospace, Consolas, Courier;
  font-size: 0.9em;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 6px;
  color: #c7d2fe;
}

.post-content pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

/* In-Post Product CTA */
.in-post-cta {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(236, 72, 153, 0.1) 100%);
  border: 1px solid rgba(99, 102, 241, 0.35);
  border-radius: 20px;
  padding: 36px 30px;
  margin: 48px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.in-post-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent), transparent);
}

.in-post-cta h3 {
  font-size: 24px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.in-post-cta p {
  font-size: 16px;
  color: #cbd5e1;
  max-width: 600px;
  margin: 0 auto 22px auto;
  line-height: 1.6;
}

/* Post Social Share & Reactions */
.post-share-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin: 40px 0;
  flex-wrap: wrap;
  gap: 16px;
}

.post-share-title {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--color-text-sub);
}

.post-share-buttons {
  display: flex;
  gap: 10px;
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #ffffff;
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.share-btn:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-2px);
}

/* Author Bio Box */
.author-bio-box {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  padding: 26px;
  display: flex;
  gap: 20px;
  align-items: center;
  margin: 40px 0;
}

@media (max-width: 600px) {
  .author-bio-box {
    flex-direction: column;
    text-align: center;
  }
}

.author-bio-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: #ffffff;
  flex-shrink: 0;
}

.author-bio-info h4 {
  font-size: 17px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 4px;
}

.author-bio-role {
  font-size: 13px;
  color: #818cf8;
  margin-bottom: 8px;
}

.author-bio-desc {
  font-size: 14px;
  color: var(--color-text-sub);
  line-height: 1.5;
}

/* Sidebar (Post TOC & Sticky CTA) */
.post-sidebar {
  position: sticky;
  top: 100px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.post-toc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  padding: 22px;
  backdrop-filter: blur(14px);
}

.post-toc-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #818cf8;
  margin-bottom: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.post-toc-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: calc(100vh - 420px);
  overflow-y: auto;
  padding-right: 4px;
}

.post-toc-list .toc ul {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.post-toc-list .toc ul ul {
  padding-left: 14px;
  margin-top: 4px;
}

.post-toc-list .toc li {
  margin: 0;
  line-height: 1.35;
}

.post-toc-list .toc a {
  font-size: 13px;
  color: var(--color-text-sub);
  text-decoration: none;
  padding: 5px 8px;
  border-radius: 6px;
  display: block;
  transition: var(--transition-smooth);
}

.post-toc-list .toc a:hover {
  color: #ffffff;
  background: rgba(99, 102, 241, 0.15);
  transform: translateX(3px);
}

.post-sidebar-cta {
  background: linear-gradient(135deg, rgba(20, 28, 48, 0.7), rgba(15, 22, 38, 0.9));
  border: 1px solid rgba(99, 102, 241, 0.25);
  border-radius: 18px;
  padding: 22px;
  text-align: center;
}

.post-sidebar-cta h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #ffffff;
}

.post-sidebar-cta p {
  font-size: 13px;
  color: var(--color-text-sub);
  margin-bottom: 16px;
  line-height: 1.5;
}