/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
  --color-bg: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-text: #1a1a1a;
  --color-text-muted: #6c757d;
  --color-border: #e9ecef;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --font-heading: 'RobotoMono', monospace;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --max-width: 1200px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

img {
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
  cursor: pointer;
}

/* ==========================================================================
   Header
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.header-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
}

.category-nav {
  display: flex;
  gap: var(--spacing-xs);
}

.nav-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav-btn:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.nav-btn.active {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

/* ==========================================================================
   Main Content
   ========================================================================== */
.main-content {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  width: 100%;
}

#content-container {
  animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ==========================================================================
   Grid View (Career, Products, Code)
   ========================================================================== */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.grid-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.grid-card:hover {
  border-color: var(--color-text-muted);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.grid-card-image {
  width: 100%;
  height: 160px;
  object-fit: cover;
  background: var(--color-bg-secondary);
}

.grid-card-image.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.75rem;
}

.grid-card-content {
  padding: var(--spacing-md);
}

.grid-card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-xs);
}

.grid-card-title a {
  color: var(--color-text);
}

.grid-card-title a:hover {
  color: var(--color-accent);
}

.grid-card-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--spacing-xs);
}

.grid-card-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

.grid-card-description {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0 0 var(--spacing-sm);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.grid-card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

/* ==========================================================================
   List View (Writing)
   ========================================================================== */
.list-container {
  max-width: 800px;
  margin: 0 auto;
}

.products-container {
  max-width: 800px;
  margin: 0 auto;
}

.writing-container {
  max-width: 800px;
  margin: 0 auto;
}

.writing-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.writing-subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0;
  padding-bottom: var(--spacing-md);
}

.writing-header .code-filter-bar {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.list-item {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.list-item:first-child {
  padding-top: 0;
}

.list-item:last-child {
  border-bottom: none;
}

.list-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xs);
  flex-wrap: wrap;
}

.list-item-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0;
}

.list-item-title a {
  color: var(--color-text);
}

.list-item-title a:hover {
  color: var(--color-accent);
}

.list-item-date {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.list-item-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--spacing-xs);
}

.list-item-description {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.5;
  margin: var(--spacing-xs) 0;
}

.list-item-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

/* ==========================================================================
   Tech Tags (Shared)
   ========================================================================== */
.tech-tag {
  font-size: 0.6875rem;
  padding: 2px 8px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   Archive Badge & Load More Button
   ========================================================================== */
.archive-badge {
  display: inline-block;
  font-size: 0.6875rem;
  padding: 0.125rem 0.5rem;
  background: var(--color-bg-secondary);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-left: 0.5rem;
  vertical-align: middle;
  text-transform: lowercase;
  letter-spacing: 0.5px;
}

.load-more-btn {
  display: block;
  width: 100%;
  padding: var(--spacing-md);
  margin-top: var(--spacing-lg);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9375rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.load-more-btn:hover {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg);
}

.footer-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

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

.footer-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-fast);
}

.footer-links a:hover {
  opacity: 0.7;
}

.footer-icon {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.footer-icon.email-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
}

.footer-copyright {
  width: 100%;
  text-align: center;
  margin: var(--spacing-md) 0 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Empty State
   ========================================================================== */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-muted);
}

.empty-state p {
  margin: 0;
  font-size: 1rem;
}

/* ==========================================================================
   Career Timeline View
   ========================================================================== */
.career-container {
  max-width: 800px;
  margin: 0 auto;
}

.career-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.career-title {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}

.career-subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin: var(--spacing-xs) 0 var(--spacing-lg);
}

.career-intro {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  margin: 0;
  padding-left: var(--spacing-lg);
}

.career-intro li {
  margin-bottom: var(--spacing-xs);
}

.career-intro li:last-child {
  margin-bottom: 0;
}

.career-timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding-left: 40px;
}

/* Vertical timeline line */
.career-timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.career-entry {
  position: relative;
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.career-entry:last-child {
  border-bottom: none;
}

/* Timeline dot */
.career-entry::before {
  content: '';
  position: absolute;
  left: -34px;
  top: calc(var(--spacing-lg) + var(--spacing-sm) + 0.75em);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
  border: 2px solid var(--color-bg);
  transition: background var(--transition-fast);
}

.career-entry.expanded::before {
  background: var(--color-accent);
}

/* Entry header (clickable row) */
.career-entry-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  margin: calc(-1 * var(--spacing-sm));
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

/* Only expandable entries have pointer cursor */
.career-entry[data-expandable] .career-entry-header {
  cursor: pointer;
}

.career-entry[data-expandable] .career-entry-header:hover {
  background: var(--color-bg-secondary);
}

.career-entry-header:focus {
  outline: none;
  background: var(--color-bg-secondary);
  box-shadow: inset 0 0 0 2px var(--color-border);
}

/* Chevron toggle indicator */
.career-entry-toggle {
  display: none;
}

/* Only show toggle for expandable entries */
.career-entry[data-expandable] .career-entry-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  font-size: 0.625rem;
  color: var(--color-accent);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.career-entry[data-expandable]:hover .career-entry-toggle {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.career-entry.expanded .career-entry-toggle {
  transform: rotate(90deg);
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

/* Expand hint text */
.career-entry-expand-hint {
  font-size: 0.75rem;
  color: var(--color-accent);
  margin-left: auto;
  white-space: nowrap;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.career-entry[data-expandable]:hover .career-entry-expand-hint {
  opacity: 1;
}

.career-entry.expanded .career-entry-expand-hint {
  display: none;
}

/* Company logo */
.career-entry-logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: var(--color-bg-secondary);
  flex-shrink: 0;
}

/* Entry info (title + subtitle) */
.career-entry-info {
  flex: 1;
  min-width: 0;
}

.career-entry-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-text);
}

.career-entry-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* Date (right-aligned) */
.career-entry-date {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* Entry body (description + tech) - always visible */
.career-entry-body {
  padding-left: calc(16px + var(--spacing-md));
  margin-top: var(--spacing-md);
}

.career-entry-description {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.5;
  margin: 0 0 var(--spacing-sm);
}

.career-entry-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

/* Children (projects/products) - hidden until expanded */
.career-entry-children {
  display: none;
  padding-left: calc(16px + var(--spacing-md));
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.career-entry.expanded .career-entry-children {
  display: block;
}

.career-entry-children-header {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin: 0 0 var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Child item */
.career-child {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.career-child:last-child {
  margin-bottom: 0;
}

.career-child-thumbnail {
  width: 80px;
  height: 60px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.career-child-content {
  flex: 1;
  min-width: 0;
}

/* Writing vs Project visual distinction */
.career-child--writing {
  border-left: 3px solid #8b5cf6;
}

.career-child--project {
  border-left: 3px solid var(--color-accent);
}

.career-child-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
}

.career-child-type {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.career-child--writing .career-child-type {
  background: #f3e8ff;
  color: #7c3aed;
}

.career-child--project .career-child-type {
  background: #dbeafe;
  color: #2563eb;
}

.career-child--media {
  border-left: 3px solid #f59e0b;
}

.career-child--media .career-child-type {
  background: #fef3c7;
  color: #d97706;
}

.career-child-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.career-child-title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-xs);
}

.career-child-title a {
  color: var(--color-text);
}

.career-child-title a:hover {
  color: var(--color-accent);
}

.career-child-description {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin: 0;
}

.career-child-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
}

.career-load-more {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--color-accent);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  margin: var(--spacing-md) 0 0;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.career-load-more:hover {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.career-load-more:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--color-bg), 0 0 0 4px var(--color-accent);
}

/* ==========================================================================
   Code Explorer (File Tree View)
   ========================================================================== */
.code-explorer {
  max-width: 800px;
  margin: 0 auto;
  font-family: var(--font-heading);
}

.code-explorer-header {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.code-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.code-filter-tag {
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  padding: 4px 10px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: lowercase;
}

.code-filter-tag:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

.code-filter-tag.active {
  background: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-bg);
}

.code-explorer-empty {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--color-text-muted);
  font-family: var(--font-body);
}

.code-explorer-tree {
  font-size: 0.875rem;
  line-height: 1.8;
}

/* Folder styles */
.code-folder {
  margin-bottom: var(--spacing-xs);
}

.code-folder-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.code-folder-row:hover {
  background: var(--color-bg-secondary);
}

.code-folder-row:focus {
  outline: none;
  background: var(--color-bg-secondary);
  box-shadow: inset 0 0 0 2px var(--color-border);
}

.tree-connector {
  color: var(--color-text-muted);
  font-weight: 400;
  flex-shrink: 0;
  width: 1.5em;
}

.code-folder-icon {
  flex-shrink: 0;
}

.code-folder-name {
  font-weight: 600;
  color: var(--color-text);
}

.code-folder-count {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  margin-left: auto;
}

/* Folder children container */
.code-folder-children {
  overflow: hidden;
}

/* File styles */
.code-file {
  /* No additional margin needed */
}

.code-file-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.code-file-row:hover {
  background: var(--color-bg-secondary);
}

.code-file-row:focus {
  outline: none;
  background: var(--color-bg-secondary);
  box-shadow: inset 0 0 0 2px var(--color-border);
}

.tree-line {
  color: var(--color-text-muted);
  font-weight: 400;
  flex-shrink: 0;
  white-space: pre;
}

.code-file-icon {
  flex-shrink: 0;
}

.code-file-name {
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.code-file-toggle {
  color: var(--color-accent);
  font-size: 0.625rem;
  margin-left: var(--spacing-xs);
  flex-shrink: 0;
}

.code-file-tech {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  margin-left: auto;
  white-space: nowrap;
  flex-shrink: 0;
}

.code-file-date {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 70px;
  text-align: right;
}

/* Expanded file details */
.code-file-details {
  overflow: hidden;
}

.code-file-details-content {
  display: flex;
  padding: 0 var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
}

.code-file-details-inner {
  flex: 1;
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-bg-secondary);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-accent);
}

.code-file-thumbnail {
  width: 120px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.code-file-details-text {
  flex: 1;
  min-width: 0;
}

.code-file-description {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--color-text);
  line-height: 1.5;
  margin: 0 0 var(--spacing-sm);
}

.code-file-link {
  font-size: 0.8125rem;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.code-file-link:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* Expanded states */
.code-file.expanded .code-file-row {
  background: var(--color-bg-secondary);
}

/* ==========================================================================
   Archive View
   ========================================================================== */
.archive-loading {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--color-text-muted);
}

.archive-container {
  max-width: 800px;
  margin: 0 auto;
}

.archive-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.archive-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 var(--spacing-xs);
  color: var(--color-text);
}

.archive-subtitle {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0;
  padding-bottom: var(--spacing-md);
}

.archive-header .code-filter-bar {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

/* Archive Timeline */
.archive-timeline {
  position: relative;
  padding-left: 24px;
}

.archive-timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

/* Year Section */
.archive-year {
  position: relative;
  margin-bottom: var(--spacing-md);
}

.archive-year::before {
  content: '';
  position: absolute;
  left: -22px;
  top: 0.85em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
}

.archive-year-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
}

.archive-year-label {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.archive-year-count {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-left: auto;
}

/* Post List */
.archive-year-posts {
  padding-left: var(--spacing-lg);
  margin-top: var(--spacing-xs);
}

.archive-post {
  border-left: 2px solid var(--color-border);
  margin-left: var(--spacing-xs);
}

.archive-post-link {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-text);
  text-decoration: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: background var(--transition-fast);
}

.archive-post-link:hover {
  background: var(--color-bg-secondary);
  color: var(--color-accent);
}

.archive-post-title {
  font-size: 0.9375rem;
  line-height: 1.4;
}

.archive-post-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

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

.archive-post-tags .tech-tag {
  font-size: 0.5625rem;
  padding: 1px 5px;
}

.archive-post-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ==========================================================================
   Archive Article Reader
   ========================================================================== */
.archive-article {
  max-width: 720px;
  margin: 0 auto;
}

.archive-back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--color-accent);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-xs) 0;
}

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

.archive-article-content {
  background: var(--color-bg);
}

.archive-article-header {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.archive-article-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--spacing-md);
  color: var(--color-text);
}

.archive-article-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.archive-article-date {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

.archive-original-link {
  font-size: 0.875rem;
  color: var(--color-accent);
}

.archive-original-link:hover {
  color: var(--color-accent-hover);
}

/* Article Body Typography */
.archive-article-body {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
}

.archive-article-body h1,
.archive-article-body h2,
.archive-article-body h3,
.archive-article-body h4,
.archive-article-body h5,
.archive-article-body h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.3;
  margin: var(--spacing-xl) 0 var(--spacing-md);
  color: var(--color-text);
}

.archive-article-body h1 { font-size: 1.75rem; }
.archive-article-body h2 { font-size: 1.5rem; }
.archive-article-body h3 { font-size: 1.25rem; }
.archive-article-body h4 { font-size: 1.125rem; }

.archive-article-body p {
  margin: 0 0 var(--spacing-lg);
}

.archive-article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: rgba(37, 99, 235, 0.3);
  text-underline-offset: 2px;
}

.archive-article-body a:hover {
  color: var(--color-accent-hover);
  text-decoration-color: var(--color-accent-hover);
}

.archive-article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--spacing-lg) 0;
  display: block;
}

.archive-article-body blockquote {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md) var(--spacing-lg);
  border-left: 4px solid var(--color-accent);
  background: var(--color-bg-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--color-text-muted);
}

.archive-article-body blockquote p:last-child {
  margin-bottom: 0;
}

.archive-article-body pre {
  margin: var(--spacing-lg) 0;
  padding: var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  line-height: 1.5;
}

.archive-article-body code {
  font-family: var(--font-heading);
  font-size: 0.875em;
  background: var(--color-bg-secondary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.archive-article-body pre code {
  background: none;
  padding: 0;
}

.archive-article-body ul,
.archive-article-body ol {
  margin: 0 0 var(--spacing-lg);
  padding-left: var(--spacing-xl);
}

.archive-article-body li {
  margin-bottom: var(--spacing-xs);
}

.archive-article-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-xl) 0;
}

.archive-article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-lg) 0;
  font-size: 0.9375rem;
}

.archive-article-body th,
.archive-article-body td {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-border);
  text-align: left;
}

.archive-article-body th {
  background: var(--color-bg-secondary);
  font-weight: 600;
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
  .header,
  .footer {
    display: none;
  }

  .main-content {
    max-width: 100%;
    padding: 0;
  }

  a {
    color: var(--color-text);
  }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .category-nav {
    width: 100%;
    justify-content: center;
  }

  .nav-btn {
    flex: 1;
    text-align: center;
    padding: var(--spacing-sm);
    font-size: 0.75rem;
  }

  .main-content {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .grid-container {
    grid-template-columns: repeat(2, 1fr);
  }

  .list-item-header {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  /* Career Timeline Mobile - Card-based layout */
  .career-timeline {
    padding-left: 0;
  }

  /* Hide timeline line and dots on mobile */
  .career-timeline::before,
  .career-entry::before {
    display: none;
  }

  /* Card-like entries on mobile */
  .career-entry {
    padding: 0;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
  }

  .career-entry:last-child {
    margin-bottom: 0;
    border-bottom: 1px solid var(--color-border);
  }

  /* Header layout */
  .career-entry-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    margin: 0;
    border-radius: var(--radius-md);
  }

  /* Toggle button */
  .career-entry[data-expandable] .career-entry-toggle {
    order: -1;
    width: 32px;
    height: 32px;
    font-size: 0.625rem;
  }

  /* Logo */
  .career-entry-logo {
    width: 40px;
    height: 40px;
  }

  /* Title and subtitle */
  .career-entry-info {
    flex: 1;
    min-width: 0;
  }

  .career-entry-title {
    font-size: 0.9375rem;
    line-height: 1.3;
  }

  .career-entry-subtitle {
    font-size: 0.8125rem;
    margin-top: 2px;
    display: block;
  }

  /* Date - full width row */
  .career-entry-date {
    order: 10;
    width: 100%;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    padding-top: var(--spacing-xs);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-xs);
  }

  /* Expand hint - styled as button */
  .career-entry-expand-hint {
    order: 11;
    width: 100%;
    margin: 0;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-accent);
    color: white;
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 0.8125rem;
    font-weight: 500;
  }

  .career-entry.expanded .career-entry-expand-hint {
    display: none;
  }

  /* Body content */
  .career-entry-body {
    padding: var(--spacing-sm) var(--spacing-md) var(--spacing-lg);
    margin-top: 0;
  }

  .career-entry-description {
    font-size: 0.875rem;
    line-height: 1.5;
  }

  .career-entry-tech {
    margin-top: var(--spacing-sm);
  }

  /* Children section */
  .career-entry-children {
    padding: var(--spacing-md);
    padding-top: 0;
    margin-top: 0;
    border-top: none;
  }

  .career-entry-children-header {
    margin-bottom: var(--spacing-sm);
  }

  .career-child {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .career-child-title {
    font-size: 0.875rem;
  }

  .career-child-description {
    font-size: 0.8125rem;
    line-height: 1.4;
  }

  .career-child-tech {
    margin-top: var(--spacing-xs);
  }

  .career-child-header {
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }

  .career-child-type {
    font-size: 0.625rem;
  }

  .career-child-date {
    font-size: 0.6875rem;
  }

  .career-child-thumbnail {
    width: 60px;
    height: 45px;
  }

  .career-load-more {
    font-size: 0.75rem;
    width: 100%;
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  /* Code Explorer Mobile */
  .code-explorer {
    font-size: 0.8125rem;
  }

  .code-explorer-header {
    font-size: 0.9375rem;
  }

  .code-file-tech {
    display: none;
  }

  .code-file-details-inner {
    flex-direction: column;
  }

  .code-file-thumbnail {
    width: 100%;
    height: auto;
    max-height: 150px;
  }

  .code-file-description {
    font-size: 0.8125rem;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    width: 100%;
    justify-content: center;
  }

  .footer-copyright {
    margin-top: var(--spacing-sm);
  }

  /* Archive Mobile */
  .archive-timeline {
    padding-left: 0;
  }

  .archive-timeline::before,
  .archive-year::before {
    display: none;
  }

  .archive-year {
    margin-bottom: var(--spacing-md);
  }

  .archive-year-header {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .archive-year-posts {
    padding: 0;
  }

  .archive-post {
    border-left: none;
    margin-left: 0;
  }

  .archive-post-link {
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .archive-post:last-child .archive-post-link {
    border-bottom: none;
  }

  .archive-post-meta {
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }

  .archive-post-tags {
    order: 1;
    width: 100%;
  }

  .archive-article-title {
    font-size: 1.5rem;
  }

  .archive-article-body {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .grid-container {
    grid-template-columns: 1fr;
  }

  .category-nav {
    flex-wrap: wrap;
  }

  .nav-btn {
    flex: 1 1 calc(50% - var(--spacing-xs));
  }
}