/* ==================== CSS Custom Properties ==================== */

:root {
  /* Modern Minimal Color Palette - Dark */
  --bg-primary: #0a0a0a;
  --bg-secondary: #151515;
  --bg-tertiary: #1f1f1f;
  --bg-card: #121212;
  --text-primary: #f5f5f5;
  --text-secondary: #a0a0a0;
  --text-muted: #606060;
  --accent-primary: #3b82f6;
  --accent-hover: #60a5fa;
  --accent-muted: rgba(59, 130, 246, 0.1);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --overlay-dark: rgba(0, 0, 0, 0.96);

  /* Light Theme Colors */
  --bg-primary-light: #fafafa;
  --bg-secondary-light: #ffffff;
  --bg-tertiary-light: #f0f0f0;
  --bg-card-light: #ffffff;
  --text-primary-light: #0a0a0a;
  --text-secondary-light: #525252;
  --text-muted-light: #a3a3a3;
  --border-subtle-light: rgba(0, 0, 0, 0.08);
  --overlay-light: rgba(255, 255, 255, 0.96);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", "Roboto",
    sans-serif;
  --font-serif: "Georgia", "Times New Roman", serif;
  --font-mono: "SF Mono", "Monaco", "Cascadia Code", monospace;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index */
  --z-content: 1;
  --z-header: 10;
  --z-viewer: 1000;
}

/* Light Theme Override */
body.light-theme {
  --bg-primary: var(--bg-primary-light);
  --bg-secondary: var(--bg-secondary-light);
  --bg-tertiary: var(--bg-tertiary-light);
  --bg-card: var(--bg-card-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --text-muted: var(--text-muted-light);
  --border-subtle: var(--border-subtle-light);
  --overlay-dark: var(--overlay-light);
  --accent-muted: rgba(59, 130, 246, 0.08);
}

/* ==================== Global Styles ==================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.6;
  transition: background-color var(--transition-base),
    color var(--transition-base);
}

::selection {
  background-color: var(--accent-primary);
  color: white;
}

/* ==================== Container ==================== */

.container {
  max-width: 1400px;
  width: 100%;
  padding: var(--spacing-xl);
  margin: 0 auto;
}

@media (max-width: 768px) {
  .container {
    padding: var(--spacing-lg);
  }
}

/* ==================== Header ==================== */

.header-wrapper {
  position: relative;
  margin-bottom: var(--spacing-3xl);
  display: flex;
  justify-content: center;
  align-items: center;
}

.masthead {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  text-align: center;
  color: var(--text-primary);
  font-family: "SF Pro Rounded", "SF Pro Display", "Segoe UI Rounded",
    "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Inter", "Roboto",
    sans-serif;
}

/* Theme Toggle */
.theme-toggle {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  color: var(--text-primary);
}

.theme-toggle:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-muted);
}

.theme-toggle .sun-icon {
  display: none;
  color: inherit;
}

.theme-toggle .moon-icon {
  display: block;
  color: inherit;
}

body.light-theme .theme-toggle .sun-icon {
  display: block;
}

body.light-theme .theme-toggle .moon-icon {
  display: none;
}

.notify-toggle {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  color: var(--text-primary);
  padding: 0;
  &.enabled {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    background: var(--accent-muted);
  }
}

.notify-toggle:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-muted);
}

.notify-toggle svg {
  width: 20px;
  height: 20px;
}

/* ==================== Blog Grid (Masonry) ==================== */

.blog-grid {
  margin-bottom: var(--spacing-4xl);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.blog-grid.isotope-ready {
  opacity: 1;
}

/* Post Card */
.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  display: flex;
  flex-direction: column;
  width: calc(33.333% - 16px);
  margin-bottom: 24px;
  max-height: 550px;
}

@media (max-width: 1247px) {
  .post-card {
    width: calc(33.333% - 16px);
  }
}

@media (max-width: 1023px) {
  .post-card {
    width: calc(50% - 12px);
  }
}

@media (max-width: 768px) {
  .post-card {
    width: 100%;
  }
}

.post-card.hidden {
  display: none;
}

.post-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* Post Image */
.post-image {
  width: 100%;
  height: 240px;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.post-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

/* Post Video */
.post-video {
  width: 100%;
  height: 240px;
  overflow: hidden;
  background: var(--bg-tertiary);
  position: relative;
}

.post-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 2;
  transition: all var(--transition-base);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-primary);
  opacity: 0.9;
}

.video-play-overlay:hover {
  transform: translate(-50%, -50%) scale(1.1);
  opacity: 1;
}

.video-play-overlay svg {
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

.post-video.playing .video-play-overlay {
  display: none;
}

/* Post Audio */
.post-audio {
  width: 100%;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.audio-waveform-container {
  position: relative;
  width: 100%;
  height: 80px;
}

.audio-waveform {
  width: 100%;
  height: 100%;
  cursor: pointer;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  display: block;
}

.audio-loading {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  z-index: 10;
  pointer-events: none;
}

.audio-loading-text {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.5px;
}

.audio-loading-bars {
  display: flex;
  gap: 5px;
  align-items: center;
  height: 24px;
}

.audio-loading-bar {
  width: 3px;
  background: var(--accent-primary);
  border-radius: 2px;
  animation: pulse-bar 1.2s ease-in-out infinite;
}

.audio-loading-bar:nth-child(1) {
  animation-delay: 0s;
}

.audio-loading-bar:nth-child(2) {
  animation-delay: 0.1s;
}

.audio-loading-bar:nth-child(3) {
  animation-delay: 0.2s;
}

.audio-loading-bar:nth-child(4) {
  animation-delay: 0.3s;
}

.audio-loading-bar:nth-child(5) {
  animation-delay: 0.4s;
}

@keyframes pulse-bar {
  0%, 100% {
    height: 6px;
    opacity: 0.4;
  }
  50% {
    height: 24px;
    opacity: 1;
  }
}

.audio-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.audio-play-btn {
  background: var(--accent-primary);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  color: white;
  flex-shrink: 0;
}

.audio-play-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.05);
}

.audio-time,
.audio-duration {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.audio-time {
  margin-left: auto;
}

/* Post Content */
.post-content {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
  position: relative;
}

/* Post Tags */
.post-tags {
  position: absolute;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  justify-content: flex-end;
  max-width: 60%;
}

.tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent-primary);
  background: var(--accent-muted);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.post-title {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.01em;
}

.post-excerpt {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.post-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-sans);
  position: absolute;
  bottom: var(--spacing-lg);
  left: var(--spacing-lg);
}

/* ==================== Tag Filters ==================== */

.tag-filters {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--spacing-3xl);
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.filter-btn:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-muted);
}

.filter-btn.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: white;
}

/* ==================== Post Viewer (Gallery-style) ==================== */

.post-viewer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-viewer);
  display: none;
  overflow-y: scroll;
  -webkit-overflow-scrolling: touch;
}

.post-viewer.active {
  display: block;
}

.viewer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--overlay-dark);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  pointer-events: none;
  will-change: opacity;
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Viewer Controls */
.viewer-close,
.viewer-nav {
  position: fixed;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  z-index: calc(var(--z-viewer) + 10);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-close:hover,
.viewer-nav:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-primary);
}

.viewer-close {
  top: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 48px;
  height: 48px;
}

.viewer-nav {
  top: 50%;
  transform: translateY(-50%);
  width: 56px;
  height: 56px;
}

.viewer-prev {
  left: var(--spacing-xl);
}

.viewer-next {
  right: var(--spacing-xl);
}

@media (max-width: 768px) {
  .viewer-close {
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 40px;
    height: 40px;
  }

  .viewer-info {
    top: var(--spacing-lg);
    left: var(--spacing-lg);
  }

  .viewer-nav {
    width: 48px;
    height: 48px;
  }

  .viewer-nav,
  .viewer-counter {
    display: none;
  }
}

/* Viewer Content */
.viewer-content {
  position: relative;
  z-index: calc(var(--z-viewer) + 5);
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  padding: 100px var(--spacing-2xl) var(--spacing-4xl);
  min-height: 100vh;
}

@media (max-width: 768px) {
  .viewer-content {
    padding: 80px var(--spacing-xl) var(--spacing-2xl);
  }
}

/* Custom scrollbar for viewer */
.post-viewer::-webkit-scrollbar {
  width: 8px;
}

.post-viewer::-webkit-scrollbar-track {
  background: transparent;
}

.post-viewer::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

.post-viewer::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Viewer Post Styling */
.viewer-post-type {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-primary);
  background: var(--accent-muted);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-lg);
}

.viewer-post-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

@media (max-width: 768px) {
  .viewer-post-title {
    font-size: 2rem;
  }
}

.viewer-post-meta {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.viewer-post-date {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-family: var(--font-sans);
}

.viewer-post-tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.viewer-post-image {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
  overflow: hidden;
}

.viewer-post-image img {
  width: 100%;
  height: auto;
  display: block;
}

.viewer-post-video {
  width: 100%;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
  overflow: hidden;
  position: relative;
}

.viewer-post-video video {
  width: 100%;
  height: auto;
  display: block;
}

.viewer-post-video .video-play-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 2;
  transition: all var(--transition-base);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-primary);
  opacity: 0.9;
}

.viewer-post-video .video-play-overlay:hover {
  transform: translate(-50%, -50%) scale(1.1);
  opacity: 1;
}

.viewer-post-video .video-play-overlay svg {
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

.viewer-post-video.playing .video-play-overlay {
  display: none;
}

.viewer-post-audio {
  width: 100%;
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.viewer-post-audio .audio-waveform {
  width: 100%;
  height: 120px;
  cursor: pointer;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
}

.viewer-post-audio .audio-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.viewer-post-audio .audio-play-btn {
  background: var(--accent-primary);
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  color: white;
  flex-shrink: 0;
}

.viewer-post-audio .audio-play-btn:hover {
  background: var(--accent-hover);
  transform: scale(1.05);
}

.viewer-post-audio .audio-time,
.viewer-post-audio .audio-duration {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

.viewer-post-audio .audio-time {
  margin-left: auto;
}

.viewer-post-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* Typography Elements */
.viewer-post-content p {
  margin-bottom: var(--spacing-lg);
}

.viewer-post-content h1 {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  margin: var(--spacing-2xl) 0 var(--spacing-lg);
  letter-spacing: -0.02em;
}

.viewer-post-content h2 {
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
  margin: var(--spacing-2xl) 0 var(--spacing-md);
  letter-spacing: -0.01em;
}

.viewer-post-content h3 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  margin: var(--spacing-xl) 0 var(--spacing-md);
}

.viewer-post-content h4 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

/* Inline Text Formatting */
.viewer-post-content strong {
  font-weight: 600;
  color: var(--text-primary);
}

.viewer-post-content em {
  font-style: italic;
}

.viewer-post-content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--bg-tertiary);
  color: var(--accent-primary);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}

.viewer-post-content del {
  text-decoration: line-through;
  color: var(--text-muted);
}

.viewer-post-content mark {
  background: rgba(59, 130, 246, 0.2);
  color: var(--text-primary);
  padding: 2px 4px;
  border-radius: 3px;
}

.viewer-post-content sub,
.viewer-post-content sup {
  font-size: 0.75em;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

.viewer-post-content sub {
  bottom: -0.25em;
}

.viewer-post-content sup {
  top: -0.5em;
}

/* Links */
.viewer-post-content a {
  color: var(--accent-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-base);
}

.viewer-post-content a:hover {
  border-bottom-color: var(--accent-primary);
  color: var(--accent-hover);
}

/* Blockquotes */
.viewer-post-content blockquote {
  font-size: 1.3rem;
  line-height: 1.7;
  font-style: italic;
  color: var(--text-primary);
  margin: var(--spacing-xl) 0;
  padding-left: var(--spacing-xl);
  border-left: 4px solid var(--accent-primary);
}

.viewer-post-content blockquote p {
  margin-bottom: var(--spacing-md);
}

.viewer-post-content blockquote p:last-child {
  margin-bottom: 0;
}

/* Lists */
.viewer-post-content ul,
.viewer-post-content ol {
  margin: var(--spacing-lg) 0;
  padding-left: var(--spacing-xl);
}

.viewer-post-content ul {
  list-style-type: disc;
}

.viewer-post-content ol {
  list-style-type: decimal;
}

.viewer-post-content li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
  color: var(--text-secondary);
}

.viewer-post-content li::marker {
  color: var(--accent-primary);
}

/* Nested lists */
.viewer-post-content li.depth-1 {
  margin-left: var(--spacing-xl);
}

.viewer-post-content li.depth-2 {
  margin-left: calc(var(--spacing-xl) * 2);
}

.viewer-post-content li.depth-3 {
  margin-left: calc(var(--spacing-xl) * 3);
}

/* Task Lists */
.viewer-post-content ul.task-list {
  list-style: none;
  padding-left: 0;
  margin: var(--spacing-md) 0;
}

.viewer-post-content .task-item {
  padding: var(--spacing-xs) 0;
  border: none;
}

.viewer-post-content .task-item + .task-item {
  margin-top: var(--spacing-xs);
}

.viewer-post-content .task-item-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
  cursor: pointer;
}

.viewer-post-content .task-item-label span {
  flex: 1;
  color: var(--text-secondary);
}

.viewer-post-content .task-item input[type="checkbox"] {
  margin-top: 0;
  width: 18px;
  height: 18px;
  cursor: not-allowed;
  appearance: none;
  border: 2px solid var(--border-subtle);
  border-radius: 4px;
  background: var(--bg-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  position: relative;
}

.viewer-post-content .task-item input[type="checkbox"]:checked {
  border-color: var(--accent-primary);
}

.viewer-post-content .task-item input[type="checkbox"]::after {
  content: "";
  position: absolute;
  top: 40%;
  left: 50%;
  width: 8px;
  height: 4px;
  border-left: 2px solid transparent;
  border-bottom: 2px solid transparent;
  transform: translate(-50%, -50%) rotate(-45deg);
  transition: all var(--transition-base);
}

.viewer-post-content .task-item input[type="checkbox"]:checked::after {
  border-color: var(--accent-primary);
}

/* Code Blocks */
.viewer-post-content pre {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  overflow-x: auto;
  white-space: pre;
}

.viewer-post-content pre code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-primary);
  background: transparent;
  border: none;
  padding: 0;
  white-space: pre;
  display: block;
}

/* Prism theme overrides to match design system */
.viewer-post-content pre[class*="language-"] {
  background: var(--bg-tertiary) !important;
  border: 1px solid var(--border-subtle);
  white-space: pre !important;
  margin: var(--spacing-lg) 0 !important;
  padding: var(--spacing-lg) !important;
}

.viewer-post-content code[class*="language-"] {
  color: var(--text-primary);
  text-shadow: none;
  white-space: pre !important;
  line-height: 1.6 !important;
}

/* Prism token colors - customized for our theme */
body.light-theme .token.comment,
body.light-theme .token.prolog,
body.light-theme .token.doctype,
body.light-theme .token.cdata {
  color: #6a737d;
}

.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
  color: #7c7c7c;
}

.token.punctuation {
  color: var(--text-secondary);
}

.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
  color: #f97583;
}

.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
  color: #9ecbff;
}

.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
  color: #79b8ff;
}

.token.atrule,
.token.attr-value,
.token.keyword {
  color: #b392f0;
}

.token.function,
.token.class-name {
  color: #79b8ff;
}

.token.regex,
.token.important,
.token.variable {
  color: #ffab70;
}

/* Light theme token adjustments */
body.light-theme .token.property,
body.light-theme .token.tag,
body.light-theme .token.boolean,
body.light-theme .token.number,
body.light-theme .token.constant,
body.light-theme .token.symbol,
body.light-theme .token.deleted {
  color: #d73a49;
}

body.light-theme .token.selector,
body.light-theme .token.attr-name,
body.light-theme .token.string,
body.light-theme .token.char,
body.light-theme .token.builtin,
body.light-theme .token.inserted {
  color: #22863a;
}

body.light-theme .token.operator,
body.light-theme .token.entity,
body.light-theme .token.url,
body.light-theme .language-css .token.string,
body.light-theme .style .token.string {
  color: #005cc5;
}

body.light-theme .token.atrule,
body.light-theme .token.attr-value,
body.light-theme .token.keyword {
  color: #6f42c1;
}

body.light-theme .token.function,
body.light-theme .token.class-name {
  color: #6f42c1;
}

body.light-theme .token.regex,
body.light-theme .token.important,
body.light-theme .token.variable {
  color: #e36209;
}

/* Horizontal Rule */
.viewer-post-content hr {
  border: none;
  border-top: 1px solid var(--border-subtle);
  margin: var(--spacing-2xl) 0;
}

/* Images */
.viewer-post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--spacing-xl) 0;
}

/* Tables */
.viewer-post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-xl) 0;
  font-size: 0.95rem;
}

.viewer-post-content table th {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
  text-align: left;
  padding: var(--spacing-md);
  border: 1px solid var(--border-subtle);
}

.viewer-post-content table td {
  padding: var(--spacing-md);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.viewer-post-content table tr:hover {
  background: var(--bg-tertiary);
}

/* Scrollbar for code blocks */
.viewer-post-content pre::-webkit-scrollbar {
  height: 8px;
}

.viewer-post-content pre::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 4px;
}

.viewer-post-content pre::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

.viewer-post-content pre::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

.viewer-quote-author {
  display: block;
  font-size: 1rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-md);
  font-style: normal;
}

.viewer-external-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--accent-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 1rem;
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--accent-muted);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-xl);
  transition: all var(--transition-base);
}

/* Link Preview Card */
.link-preview-card {
  display: flex;
  flex-direction: column;
  margin-top: var(--spacing-2xl);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  background: var(--bg-card);
  transition: all var(--transition-base);
}

.link-preview-card:hover {
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.link-preview-image {
  width: 100%;
  height: 0;
  padding-bottom: 52.63%; /* 1.9:1 aspect ratio (630/1200) */
  background-size: cover;
  background-position: center;
  background-color: var(--bg-tertiary);
}

.link-preview-content {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.link-preview-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.link-preview-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.link-preview-url {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.viewer-external-link:hover {
  background: var(--accent-primary);
  color: white;
}

/* Viewer Info */
.viewer-info {
  position: fixed;
  top: var(--spacing-xl);
  left: var(--spacing-xl);
  z-index: calc(var(--z-viewer) + 10);
}

.viewer-counter {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: 1px solid var(--border-subtle);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

body.light-theme .viewer-counter {
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(0, 0, 0, 0.08);
  color: var(--text-secondary);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.08);
}

/* ==================== Loading States ==================== */

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-subtle);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ==================== Utilities ==================== */

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* Smooth focus states for accessibility */
*:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

button {
  cursor: pointer;
}

.site-footer {
  margin-top: var(--spacing-4xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-subtle);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-footer small {
  color: var(--text-muted);
}

body.light-theme .site-footer {
  border-top-color: rgba(0, 0, 0, 0.08);
}