/* ============================================
   黄瓜君 Personal Website — Blog Module CSS
   ============================================ */

/* --- Page Layout Adjustments --- */
.blog-header {
  padding-top: 120px;
  padding-bottom: 20px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.blog-header .section__title {
  margin-bottom: 12px;
}

.blog-header__subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.6;
}

/* --- Search & Filter Bar --- */
.blog-controls {
  max-width: 1000px;
  margin: 30px auto 50px auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: center;
  padding: 0 20px;
}

.blog-search-wrapper {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.blog-search-input {
  width: 100%;
  padding: 14px 20px 14px 48px;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  outline: none;
  backdrop-filter: var(--glass-backdrop);
  transition: all 0.3s var(--ease-out);
}

.blog-search-input:focus {
  border-color: var(--accent-green);
  box-shadow: 0 0 15px rgba(57, 255, 20, 0.15);
}

.blog-search-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
  transition: color 0.3s var(--ease-out);
  width: 18px;
  height: 18px;
}

.blog-search-input:focus + .blog-search-icon {
  color: var(--accent-green);
}

.blog-categories {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Blog List Grid --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px var(--section-pad) 40px;
  position: relative;
  z-index: 1;
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  overflow: hidden;
  backdrop-filter: var(--glass-backdrop);
  transition: all 0.4s var(--ease-out);
  height: 100%;
}

.blog-card:hover {
  border-color: var(--glass-border-hover);
  transform: translateY(-6px);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(57, 255, 20, 0.08);
}

.blog-card__image-link {
  display: block;
  overflow: hidden;
  position: relative;
}

.blog-card__image-placeholder {
  width: 100%;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  border-bottom: 1px solid var(--glass-border);
  transition: transform 0.5s var(--ease-out);
}

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

.blog-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 10px;
}

.blog-card__category {
  color: var(--accent-cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.blog-card__date {
  position: relative;
}

.blog-card__date::before {
  content: '•';
  margin-right: 8px;
  color: var(--text-dim);
}

.blog-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 12px;
  transition: color 0.3s var(--ease-out);
}

.blog-card__title a {
  display: block;
}

.blog-card__title a:hover {
  color: var(--accent-green);
}

.blog-card__excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.blog-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 16px;
  margin-top: auto;
}

.blog-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.blog-card__tag {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--accent-green);
  background: var(--accent-green-dim);
  padding: 2px 10px;
  border-radius: 50px;
}

.blog-card__link {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-cyan);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s var(--ease-out);
}

.blog-card__link svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s var(--ease-out);
}

.blog-card:hover .blog-card__link {
  color: var(--accent-green);
}

.blog-card:hover .blog-card__link svg {
  transform: translateX(3px);
  stroke: var(--accent-green);
}

/* Empty State / Error */
.blog-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px dashed var(--glass-border);
  border-radius: var(--card-radius);
  max-width: 600px;
  margin: 30px auto;
}

.blog-empty svg {
  width: 48px;
  height: 48px;
  color: var(--text-dim);
  margin-bottom: 16px;
}

/* --- Reading Progress Bar --- */
.reading-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  z-index: 2000;
}

.reading-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-green) 0%, var(--accent-cyan) 100%);
  box-shadow: 0 0 10px var(--accent-green);
  transition: width 0.1s ease-out;
}

/* --- Blog Detail Section --- */
.blog-post {
  padding-top: 110px;
  max-width: 860px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.blog-post__nav {
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.blog-post__back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  transition: color 0.3s var(--ease-out);
}

.blog-post__back-btn:hover {
  color: var(--accent-green);
}

.blog-post__back-btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s var(--ease-out);
}

.blog-post__back-btn:hover svg {
  transform: translateX(-4px);
}

.blog-post__header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 30px;
}

.blog-post__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.blog-post__category {
  color: var(--accent-cyan);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.blog-post__date, .blog-post__reading-time {
  display: flex;
  align-items: center;
  gap: 6px;
}

.blog-post__date svg, .blog-post__reading-time svg {
  width: 14px;
  height: 14px;
  color: var(--text-dim);
}

.blog-post__title {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.blog-post__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.blog-post__tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent-green);
  background: var(--accent-green-dim);
  padding: 4px 12px;
  border-radius: 50px;
  border: 1px solid rgba(57, 255, 20, 0.1);
}

/* --- Markdown Styles & Formatting --- */
.markdown-body {
  color: var(--text-primary);
  font-size: 1.05rem;
  line-height: 1.85;
  word-wrap: break-word;
}

.markdown-body p {
  margin-bottom: 24px;
}

.markdown-body strong {
  color: var(--accent-green);
  font-weight: 600;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.3;
  margin-top: 40px;
  margin-bottom: 20px;
}

.markdown-body h1 {
  font-size: 2rem;
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: 10px;
}

.markdown-body h2 {
  font-size: 1.6rem;
  position: relative;
  display: inline-block;
}

.markdown-body h2::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 2px;
}

.markdown-body h3 {
  font-size: 1.25rem;
}

.markdown-body ul,
.markdown-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.markdown-body li {
  margin-bottom: 8px;
}

.markdown-body ul li {
  list-style: none;
  position: relative;
}

.markdown-body ul li::before {
  content: '';
  position: absolute;
  left: -16px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

/* Blockquotes styling - beautiful cyber neon */
.markdown-body blockquote {
  margin: 30px 0;
  padding: 16px 24px;
  background: rgba(57, 255, 20, 0.03);
  border-left: 4px solid var(--accent-green);
  border-radius: 0 8px 8px 0;
  color: var(--text-secondary);
  font-style: italic;
  box-shadow: inset 5px 0 15px rgba(57, 255, 20, 0.02);
}

.markdown-body blockquote p {
  margin-bottom: 0;
}

/* Tables styling */
.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 30px;
  background: rgba(18, 18, 30, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  overflow: hidden;
}

.markdown-body th,
.markdown-body td {
  padding: 12px 18px;
  text-align: left;
  border-bottom: 1px solid var(--glass-border);
}

.markdown-body th {
  background: rgba(57, 255, 20, 0.05);
  color: var(--accent-cyan);
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.markdown-body tr:last-child td {
  border-bottom: none;
}

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

/* Inline Code */
.markdown-body :not(pre) > code {
  font-family: 'Courier New', Courier, monospace;
  background: rgba(255, 255, 255, 0.06);
  color: var(--accent-cyan);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Code Blocks Container styling */
.markdown-body pre {
  margin-bottom: 28px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: #0d0d14 !important;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.markdown-body pre code {
  display: block;
  padding: 20px 24px;
  overflow-x: auto;
  font-family: 'Fira Code', 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  line-height: 1.6;
}

/* Copy code block header */
.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 20px;
  background: rgba(0, 0, 0, 0.3);
  border-bottom: 1px solid var(--glass-border);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-dim);
}

.code-header__lang {
  text-transform: uppercase;
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.code-header__copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
  transition: all 0.2s var(--ease-out);
}

.code-header__copy-btn:hover {
  color: var(--accent-green);
  background: rgba(57, 255, 20, 0.05);
}

.code-header__copy-btn svg {
  width: 14px;
  height: 14px;
}

/* Responsive Image Container */
.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  margin: 30px auto;
  display: block;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* --- Editor / Writing Workspace (`write.html`) --- */
.writer {
  padding-top: 100px;
  max-width: 1400px;
  margin: 0 auto;
  padding-left: 20px;
  padding-right: 20px;
  padding-bottom: 60px;
}

.writer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  height: calc(100vh - 160px);
  min-height: 550px;
}

@media (max-width: 992px) {
  .writer-grid {
    grid-template-columns: 1fr;
    height: auto;
  }
}

.writer-pane {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  backdrop-filter: var(--glass-backdrop);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
}

.writer-pane__header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.2);
}

.writer-pane__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 8px;
}

.writer-pane__title svg {
  width: 18px;
  height: 18px;
}

.writer-form-scroll {
  padding: 24px;
  overflow-y: auto;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.writer-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 576px) {
  .writer-form-row {
    grid-template-columns: 1fr;
  }
}

.writer-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.writer-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.writer-input {
  background: rgba(10, 10, 15, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: all 0.3s var(--ease-out);
}

.writer-input:focus {
  border-color: var(--accent-green);
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.1);
}

.writer-textarea {
  background: rgba(10, 10, 15, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 12px 14px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  resize: vertical;
  transition: all 0.3s var(--ease-out);
}

.writer-textarea:focus {
  border-color: var(--accent-green);
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.1);
}

/* Editor input body */
.writer-editor-body {
  flex-grow: 1;
  min-height: 250px;
}

.writer-editor-body .writer-textarea {
  height: 100%;
  min-height: 250px;
  font-family: 'Fira Code', 'Courier New', Courier, monospace;
  line-height: 1.5;
}

/* Preview pane scroll wrapper */
.writer-preview-scroll {
  padding: 30px 24px;
  overflow-y: auto;
  flex-grow: 1;
}

/* Save / Submit Banner Buttons */
.writer-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  border: none;
  transition: all 0.3s var(--ease-out);
}

.writer-btn--primary {
  background: var(--accent-gradient);
  color: var(--bg-primary);
}

.writer-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(57, 255, 20, 0.25);
}

.writer-btn--secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.writer-btn--secondary:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 6px 20px rgba(0, 229, 255, 0.1);
}

/* --- Modals for Writing Success Fallbacks --- */
.writer-modal-content {
  color: var(--text-primary);
}

.writer-code-box {
  background: #0d0d14;
  border: 1px solid var(--glass-border);
  border-radius: 8px;
  padding: 14px 18px;
  font-family: monospace;
  font-size: 0.85rem;
  overflow-x: auto;
  margin: 15px 0;
  max-height: 200px;
}

.writer-tip {
  font-size: 0.82rem;
  color: var(--text-secondary);
  background: rgba(0, 229, 255, 0.05);
  border-left: 3px solid var(--accent-cyan);
  padding: 8px 12px;
  border-radius: 0 4px 4px 0;
  margin-top: 15px;
}

/* --- Blog Card Delete Button (Localhost only) --- */
.blog-card__delete-btn {
  font-size: 0.76rem;
  font-weight: 600;
  color: #ff453a;
  background: rgba(255, 69, 58, 0.1);
  border: 1px solid rgba(255, 69, 58, 0.2);
  padding: 5px 12px;
  border-radius: 50px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  outline: none;
  transition: all 0.3s var(--ease-out);
}

.blog-card__delete-btn:hover {
  background: rgba(255, 69, 58, 0.25);
  border-color: #ff453a;
  box-shadow: 0 0 10px rgba(255, 69, 58, 0.2);
  transform: translateY(-1px);
}

.blog-card__delete-btn svg {
  width: 12px;
  height: 12px;
}

/* ============================================
   5. Mermaid Diagrams Custom Styling
   ============================================ */
.markdown-body .mermaid {
  background: rgba(13, 13, 20, 0.88) !important; /* Solid-enough dark background to block particles and ensure text contrast */
  border: 1px solid var(--glass-border) !important;
  border-radius: 16px !important;
  padding: 32px !important;
  margin: 36px 0 !important;
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45) !important;
  backdrop-filter: blur(12px) !important;
  overflow: hidden !important;
}

.markdown-body .mermaid svg {
  max-width: 100% !important;
  height: auto !important;
}

/* Override svg labels inside diagram for high contrast */
.markdown-body .mermaid svg .edgeLabel span {
  color: var(--accent-green) !important;
  font-weight: 600 !important;
}

.markdown-body .mermaid svg .edgeLabel rect {
  fill: #0d0d14 !important;
}