:root {
  --blog-surface: #ffffff;
  --blog-surface-muted: #f6f8fb;
  --blog-border: #d0d7de;
  --blog-border-strong: #8c959f;
  --blog-text: #1f2328;
  --blog-text-muted: #59636e;
  --blog-accent: #0969da;
  --blog-accent-soft: #dbeafe;
  --comment-line: #d8dee4;
}

.dark-theme,
[data-bs-theme="dark"],
[data-theme-mode="dark"] {
  --blog-surface: #161b22;
  --blog-surface-muted: #0d1117;
  --blog-border: #30363d;
  --blog-border-strong: #6e7681;
  --blog-text: #e6edf3;
  --blog-text-muted: #9da7b3;
  --blog-accent: #58a6ff;
  --blog-accent-soft: rgba(88, 166, 255, 0.12);
  --comment-line: #30363d;
}

[data-bs-theme="light"],
[data-theme-mode="light"] {
  --blog-surface: #ffffff;
  --blog-surface-muted: #f6f8fb;
  --blog-border: #d0d7de;
  --blog-border-strong: #8c959f;
  --blog-text: #1f2328;
  --blog-text-muted: #59636e;
  --blog-accent: #0969da;
  --blog-accent-soft: #dbeafe;
  --comment-line: #d8dee4;
}

.blog-title {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 16px;
  letter-spacing: -1.5px;
  color: var(--blog-text);
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
}

.blog-desc {
  color: var(--blog-text-muted);
  font-size: 1.08rem;
  margin-bottom: 32px;
  font-family: 'Segoe UI', 'Roboto', Arial, sans-serif;
}

.blog-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 32px;
}

.blog-card {
  background: linear-gradient(180deg, var(--blog-surface) 0%, var(--blog-surface-muted) 100%);
  border: 1px solid var(--blog-border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  overflow: hidden;
}

.blog-card h2 {
  color: var(--blog-text);
  font-size: 1.6rem;
  margin: 0 0 12px;
  overflow-wrap: anywhere;
}

.blog-card p {
  color: var(--blog-text-muted);
  font-size: 1rem;
  margin-bottom: 18px;
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.blog-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.95rem;
  color: var(--blog-text-muted);
}

.blog-avatar,
.comment-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--blog-accent-soft);
  color: var(--blog-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex: 0 0 auto;
}

.admin-avatar {
  background: var(--blog-accent);
  color: #fff;
}

.blog-tags {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.blog-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--blog-accent-soft);
  color: var(--blog-accent);
  font-weight: 700;
  font-size: 0.85rem;
}

.blog-feature-image {
  margin-bottom: 18px;
}

.blog-feature-image img {
  max-width: 100%;
  display: block;
  border-radius: 12px;
}

.blog-feature-video {
  margin-bottom: 18px;
}

.blog-feature-video video {
  width: 100%;
  display: block;
  border-radius: 12px;
  background: #000;
  max-height: 420px;
}

.blog-comments-preview {
  display: grid;
  gap: 10px;
  margin-bottom: 14px;
}

.comment-preview-card {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 12px 14px;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 12px;
  min-width: 0;
}

.comment-preview-body,
.comment-thread-main {
  min-width: 0;
  flex: 1 1 auto;
}

.comment-preview-meta,
.comment-thread-header,
.comment-thread-author {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.comment-thread-header {
  background: transparent;
  color: inherit;
  padding: 0;
  margin: 0;
  box-shadow: none;
  border: 0;
  justify-content: space-between;
}

.comment-preview-text,
.comment-content,
.reply-context,
.reply-context-snippet,
.comment-email,
.comment-date,
.comment-user {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.comment-preview-empty,
.blog-empty-state,
.comment-loading-state,
.comment-empty-state,
.comment-error-state {
  padding: 18px;
  text-align: center;
  border: 1px dashed var(--blog-border);
  border-radius: 12px;
  color: var(--blog-text-muted);
  background: var(--blog-surface-muted);
}

.comment-error-state {
  color: #b42318;
}

.comment-expansion {
  margin-top: 16px;
  padding-top: 18px;
  border-top: 1px solid var(--blog-border);
}

.comments-list {
  margin: 0 0 16px;
}

.github-comments-thread {
  display: grid;
  gap: 12px;
}

.comment-thread-node {
  margin-left: calc(min(var(--thread-level, 0), 4) * 22px);
  position: relative;
  min-width: 0;
}

.comment-thread-node::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--comment-line);
  opacity: 0.9;
}

.comment-thread-node:first-child::before {
  top: 18px;
}

.comment-thread-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  background: var(--blog-surface);
  border: 1px solid var(--blog-border);
  border-radius: 14px;
  min-width: 0;
}

.comment-thread-card.is-admin {
  background: linear-gradient(180deg, var(--blog-surface) 0%, var(--blog-accent-soft) 100%);
}

.comment-thread-children {
  display: grid;
  gap: 12px;
  margin-top: 12px;
}

.comment-thread-author {
  font-size: 0.95rem;
  color: var(--blog-text);
  font-weight: 700;
}

.comment-user {
  color: var(--blog-text);
  font-weight: 700;
}

.comment-email,
.comment-date {
  color: var(--blog-text-muted);
  font-size: 0.88rem;
}

.reply-context {
  display: grid;
  gap: 3px;
  margin: 8px 0;
  padding: 10px 12px;
  border-left: 3px solid var(--blog-accent);
  background: var(--blog-surface-muted);
  border-radius: 8px;
}

.reply-context-user {
  color: var(--blog-accent);
  font-weight: 700;
}

.reply-context-snippet {
  color: var(--blog-text-muted);
  font-size: 0.92rem;
}

.comment-content {
  margin: 10px 0 12px;
  color: var(--blog-text);
  line-height: 1.65;
}

.admin-reply-content {
  color: var(--blog-accent);
}

.comment-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.reply-link {
  color: var(--blog-accent);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
}

.reply-link:hover {
  text-decoration: underline;
}

.admin-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--blog-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
}

.comment-form-shell {
  margin-top: 12px;
  padding: 14px;
  border: 1px solid var(--blog-border);
  border-radius: 12px;
  background: var(--blog-surface-muted);
}

.comment-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.comment-form-field {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
  min-width: 0;
}

.comment-form-field span {
  color: var(--blog-text-muted);
  font-size: 0.9rem;
  font-weight: 600;
}

.comment-form-actions {
  display: flex;
  justify-content: flex-start;
}

.comment-status {
  margin-top: 10px;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .blog-card {
    padding: 18px 14px;
  }

  .comment-form-grid {
    grid-template-columns: 1fr;
  }

  .comment-thread-node {
    margin-left: calc(min(var(--thread-level, 0), 3) * 14px);
  }

  .comment-thread-node::before {
    left: -8px;
  }
}

@media (max-width: 600px) {
  .blog-title {
    font-size: 1.6rem;
  }

  .comment-thread-card,
  .comment-preview-card {
    padding: 12px;
  }

  .comment-thread-node {
    margin-left: calc(min(var(--thread-level, 0), 2) * 10px);
  }
}