/**
 * Yaode AI Blog - 独立博客样式
 * 与首页保持一致的设计语言
 */

/* ===== Blog Layout ===== */
.blog-hero {
  padding: 140px 0 60px;
  text-align: center;
  position: relative;
}

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

.blog-hero p {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Blog Container ===== */
.blog-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* ===== Blog List ===== */
.blog-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all 0.3s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
  box-shadow: var(--shadow-card);
}

.blog-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.blog-card-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(99,102,241,0.15);
  color: var(--accent-purple);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.blog-card-date {
  color: var(--text-muted);
  font-size: 14px;
}

.blog-card-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 12px;
  line-height: 1.4;
  color: var(--text-primary);
}

.blog-card-excerpt {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 16px;
}

.blog-card-read {
  color: var(--accent-purple);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.blog-card-read::after {
  content: '→';
  transition: transform 0.2s;
}

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

/* ===== Blog Post Detail ===== */
.blog-post {
  max-width: 800px;
  margin: 0 auto;
  padding: 120px 24px 80px;
}

.blog-post-header {
  margin-bottom: 48px;
  text-align: center;
}

.blog-post-header h1 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.3;
}

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

.blog-post-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 32px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.blog-post-back:hover {
  color: var(--text-primary);
  border-color: var(--border-glow);
}

.blog-post-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-primary);
}

.blog-post-content h2 {
  font-size: 28px;
  font-weight: 700;
  margin: 48px 0 24px;
  color: var(--text-primary);
}

.blog-post-content h3 {
  font-size: 22px;
  font-weight: 600;
  margin: 36px 0 18px;
  color: var(--text-primary);
}

.blog-post-content p {
  margin-bottom: 20px;
  color: var(--text-secondary);
}

.blog-post-content ul,
.blog-post-content ol {
  margin: 20px 0;
  padding-left: 24px;
  color: var(--text-secondary);
}

.blog-post-content li {
  margin-bottom: 12px;
}

.blog-post-content code {
  background: var(--bg-card2);
  padding: 2px 8px;
  border-radius: 6px;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 14px;
  color: var(--accent-purple);
}

.blog-post-content pre {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin: 24px 0;
  overflow-x: auto;
}

.blog-post-content pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

.blog-post-content blockquote {
  border-left: 4px solid var(--accent-purple);
  padding: 16px 20px;
  margin: 24px 0;
  background: rgba(99,102,241,0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
}

.blog-post-content img {
  max-width: 100%;
  border-radius: var(--radius-md);
  margin: 24px 0;
}

.blog-post-content a {
  color: var(--accent-purple);
  text-decoration: underline;
}

/* ===== Blog Search ===== */
.blog-search {
  position: relative;
  margin-bottom: 32px;
}

.blog-search input {
  width: 100%;
  padding: 14px 48px 14px 48px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 16px;
  font-family: var(--font);
  transition: all 0.2s;
  outline: none;
}

.blog-search input:focus {
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.blog-search input::placeholder {
  color: var(--text-muted);
}

.blog-search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 18px;
  pointer-events: none;
}

.blog-search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-card);
  max-height: 400px;
  overflow-y: auto;
  display: none;
  z-index: 10;
}

.blog-search-results.active {
  display: block;
}

.blog-search-result-item {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}

.blog-search-result-item:last-child {
  border-bottom: none;
}

.blog-search-result-item:hover {
  background: rgba(99,102,241,0.08);
}

.blog-search-result-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.blog-search-result-meta {
  font-size: 12px;
  color: var(--text-muted);
}

.blog-search-no-results {
  padding: 24px 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

/* ===== Blog Tags Filter ===== */
.blog-tags {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 40px;
  justify-content: center;
}

.blog-tag-btn {
  padding: 8px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.blog-tag-btn:hover,
.blog-tag-btn.active {
  background: rgba(99,102,241,0.15);
  border-color: var(--accent-purple);
  color: var(--accent-purple);
}

/* ===== Blog Pagination ===== */
.blog-pagination {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 48px;
}

.blog-pagination-btn {
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.blog-pagination-btn:hover,
.blog-pagination-btn.active {
  background: var(--accent-purple);
  border-color: var(--accent-purple);
  color: white;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .blog-hero {
    padding: 120px 0 40px;
  }

  .blog-search input {
    padding: 12px 40px 12px 40px;
    font-size: 14px;
  }

  .blog-search-icon {
    left: 12px;
    font-size: 16px;
  }

  .blog-card {
    padding: 24px;
  }

  .blog-card-title {
    font-size: 20px;
  }

  .blog-post {
    padding: 100px 16px 60px;
  }

  .blog-post-content h2 {
    font-size: 24px;
  }

  .blog-post-content h3 {
    font-size: 20px;
  }
}