/* Blog Styles - Matches vassistant.app dark theme */

/* Blog Listing Page */
.blog-listing {
  padding: 10rem 4rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
  min-height: 100vh;
}

.blog-listing-header {
  text-align: center;
  margin-bottom: 4rem;
}

.blog-listing-header .section-label {
  display: inline-block;
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.blog-listing-header .section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1rem;
  color: var(--color-text);
}

.blog-listing-header .section-description {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Blog Posts Grid */
.blog-posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

/* Blog Card */
.blog-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s var(--ease-out);
  opacity: 0;
  transform: translateY(20px);
}

.blog-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.blog-card:hover {
  transform: translateY(-6px);
  border-color: rgba(245, 158, 11, 0.4);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.blog-card-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.3s var(--ease-out);
}

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

.blog-card-content {
  padding: 1.5rem;
}

/* Blog Card Meta (date + pinned badge) */
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.blog-card-content time {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 500;
}

/* Pinned Badge */
.blog-pinned-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.blog-pinned-badge svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* Pinned Card Highlight */
.blog-card-pinned {
  border-color: rgba(245, 158, 11, 0.3);
}

.blog-card-content h2 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin: 0.5rem 0;
  line-height: 1.3;
}

.blog-card-content h2 a {
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.2s;
}

.blog-card-content h2 a:hover {
  color: var(--color-accent);
}

.blog-card-content p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.6;
  margin: 0.75rem 0;
}

.blog-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  margin-top: 0.5rem;
  transition: gap 0.2s;
}

.blog-read-more:hover {
  gap: 0.75rem;
}

.blog-read-more svg {
  stroke: currentColor;
}

.blog-no-posts {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 1.1rem;
  padding: 4rem 0;
}

/* Blog Subscribe Section */
.blog-subscribe {
  margin-top: 4rem;
  padding: 3rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  text-align: center;
}

.blog-subscribe-content {
  max-width: 500px;
  margin: 0 auto;
}

.blog-subscribe h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.blog-subscribe p {
  color: var(--color-text-muted);
  font-size: 1rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.subscribe-form-row {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.subscribe-form-row input[type="email"] {
  flex: 1;
  padding: 0.875rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.subscribe-form-row input[type="email"]:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

.subscribe-form-row input[type="email"]::placeholder {
  color: var(--color-text-muted);
}

.subscribe-form-row button {
  padding: 0.875rem 1.5rem;
  background: var(--color-accent);
  color: var(--color-bg);
  border: none;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  white-space: nowrap;
}

.subscribe-form-row button:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

.subscribe-privacy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  opacity: 0.7;
  margin: 0;
}

@media (max-width: 480px) {
  .subscribe-form-row {
    flex-direction: column;
  }

  .subscribe-form-row button {
    width: 100%;
  }

  .blog-subscribe {
    padding: 2rem 1.5rem;
  }
}

/* Blog Post Page */
.blog-post {
  padding: 10rem 4rem 4rem;
  max-width: 800px;
  margin: 0 auto;
  min-height: 100vh;
}

.blog-article {
  background: transparent;
}

.blog-header {
  margin-bottom: 2.5rem;
}

.blog-back-link {
  display: inline-block;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  transition: color 0.2s;
}

.blog-back-link:hover {
  color: var(--color-accent);
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.blog-meta time {
  color: var(--color-accent);
  font-weight: 500;
}

.blog-meta-divider {
  color: var(--color-border);
}

.blog-header h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.2;
  color: var(--color-text);
  margin: 0;
}

.blog-lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.9rem;
  margin-top: 1rem;
  transition: gap 0.2s;
}

.blog-lang-switch:hover {
  gap: 0.75rem;
}

/* Hero Image */
.blog-hero-image {
  margin: 0 0 2.5rem 0;
}

.blog-hero-image img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Blog Content Typography */
.blog-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text);
}

.blog-content h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin: 3rem 0 1rem;
  color: var(--color-text);
}

.blog-content h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 2.5rem 0 0.75rem;
  color: var(--color-text);
}

.blog-content h4 {
  font-family: var(--font-body);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2rem 0 0.5rem;
  color: var(--color-text);
}

.blog-content p {
  margin-bottom: 1.5rem;
  color: var(--color-text-muted);
}

.blog-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.blog-content a:hover {
  text-decoration-color: transparent;
}

.blog-content strong {
  color: var(--color-text);
  font-weight: 600;
}

.blog-content em {
  font-style: italic;
}

/* Lists */
.blog-content ul,
.blog-content ol {
  margin: 1.5rem 0;
  padding-left: 1.5rem;
  color: var(--color-text-muted);
}

.blog-content li {
  margin-bottom: 0.5rem;
}

.blog-content li::marker {
  color: var(--color-accent);
}

/* Blockquotes */
.blog-content blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--color-text-muted);
}

.blog-content blockquote p {
  margin-bottom: 0;
}

/* Code Blocks */
.blog-content pre {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.5rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.blog-content pre.hljs {
  background: var(--color-bg-elevated);
}

.blog-content code {
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 0.9em;
}

.blog-content p code,
.blog-content li code {
  background: var(--color-bg-elevated);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: var(--color-accent);
}

/* Images */
.blog-content img {
  max-width: 100%;
  border-radius: 8px;
  margin: 1.5rem 0;
}

/* Tables */
.blog-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.blog-content th,
.blog-content td {
  border: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
  text-align: left;
}

.blog-content th {
  background: var(--color-bg-elevated);
  font-weight: 500;
  color: var(--color-text);
}

.blog-content td {
  color: var(--color-text-muted);
}

/* Footnotes */
.blog-content .footnotes {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.blog-content .footnotes hr {
  display: none;
}

.blog-content .footnotes ol {
  padding-left: 1.25rem;
}

.blog-content .footnote-ref {
  font-size: 0.75em;
  vertical-align: super;
}

/* Task Lists */
.blog-content .task-list-item {
  list-style: none;
  margin-left: -1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.blog-content .task-list-item input[type="checkbox"] {
  margin-top: 0.3rem;
  accent-color: var(--color-accent);
}

/* Horizontal Rule */
.blog-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2.5rem 0;
}

/* Blog Footer */
.blog-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.blog-tag {
  background: var(--color-accent-soft);
  color: var(--color-accent);
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 500;
}

.blog-author {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* Site Footer for Blog Pages */
.site-footer {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  padding: 3rem 4rem;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-logo .logo-mark {
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--color-accent), #fbbf24);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--color-bg);
}

.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-copyright {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  opacity: 0.7;
}

/* Language Switch Link in Nav */
.lang-switch-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color 0.2s;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
}

.lang-switch-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* Active Nav Link */
.nav-links a.active {
  color: var(--color-accent);
}

.nav-links a.active::after {
  width: 100%;
}

/* Highlight.js Custom Theme */
.hljs {
  background: var(--color-bg-elevated);
  color: var(--color-text);
}

.hljs-keyword,
.hljs-selector-tag,
.hljs-built_in,
.hljs-name {
  color: #f59e0b;
}

.hljs-string,
.hljs-attr {
  color: #22c55e;
}

.hljs-number,
.hljs-literal {
  color: #60a5fa;
}

.hljs-comment,
.hljs-quote {
  color: #6b7280;
  font-style: italic;
}

.hljs-function,
.hljs-title {
  color: #fbbf24;
}

.hljs-class .hljs-title {
  color: #f59e0b;
}

.hljs-variable,
.hljs-template-variable {
  color: #f87171;
}

.hljs-type,
.hljs-params {
  color: #38bdf8;
}

.hljs-meta {
  color: #a78bfa;
}

.hljs-addition {
  color: #22c55e;
  background: rgba(34, 197, 94, 0.1);
}

.hljs-deletion {
  color: #f87171;
  background: rgba(248, 113, 113, 0.1);
}

/* Responsive */
@media (max-width: 1024px) {
  .blog-listing,
  .blog-post {
    padding: 8rem 2rem 3rem;
  }
}

@media (max-width: 768px) {
  .blog-listing,
  .blog-post {
    padding: 7rem 1.5rem 2rem;
  }

  .blog-posts-grid {
    grid-template-columns: 1fr;
  }

  .blog-header h1 {
    font-size: 1.75rem;
  }

  .blog-content {
    font-size: 1rem;
  }

  .blog-content h2 {
    font-size: 1.5rem;
  }

  .blog-content h3 {
    font-size: 1.25rem;
  }

  .blog-footer {
    flex-direction: column;
  }

  .site-footer {
    padding: 2rem 1.5rem;
  }

  .footer-links {
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .blog-listing-header .section-title,
  .blog-header h1 {
    font-size: 1.5rem;
  }

  .blog-card-content {
    padding: 1rem;
  }
}

/* Glossary Terms - Highlighted clickable terms */
.glossary-term {
  color: var(--color-accent);
  background: var(--color-accent-soft);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  cursor: pointer;
  border-bottom: 1px dashed var(--color-accent);
  transition: all 0.2s ease;
  text-decoration: none;
}

.glossary-term:hover,
.glossary-term:focus {
  background: rgba(245, 158, 11, 0.25);
  outline: none;
  box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.3);
}

/* Term Explainer Popup */
.term-popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 1rem;
}

.term-popup-overlay.active {
  opacity: 1;
  visibility: visible;
}

.term-popup {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 2rem;
  max-width: 400px;
  width: 100%;
  text-align: center;
  position: relative;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s ease;
}

.term-popup-overlay.active .term-popup {
  transform: scale(1) translateY(0);
}

.term-popup-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  line-height: 1;
  transition: color 0.2s;
}

.term-popup-close:hover {
  color: var(--color-text);
}

.term-popup-icon {
  width: 56px;
  height: 56px;
  background: var(--color-accent-soft);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  color: var(--color-accent);
}

.term-popup-term {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--color-accent);
  margin-bottom: 0.25rem;
}

.term-popup-full {
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.term-popup-explanation {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  text-align: left;
}

.term-popup-btn {
  background: linear-gradient(135deg, var(--color-accent), #fbbf24);
  color: var(--color-bg);
  border: none;
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.term-popup-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

@media (max-width: 480px) {
  .term-popup {
    padding: 1.5rem;
  }

  .term-popup-term {
    font-size: 1.5rem;
  }
}