/* ==========================================================================
   Design System & Modern CSS Variables for Hallison Paz Website
   Light / Dark mode, Typography, Layout, Components
   ========================================================================== */

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Light Theme */
  --bg: #faf9f5;
  --bg-primary: var(--bg);
  --bg-secondary: #ffffff;
  --bg-elevated: #e8e4dc;
  --bg-tertiary: var(--bg-elevated);
  --border: #ded9cf;
  --border-color: var(--border);
  --border-hover: #c4beaf;
  --text-primary: #1e201a;
  --text-secondary: #595e54;
  --text-muted: #767d71;
  --accent: #5c6b2f;
  --accent-hover: #47531f;
  --accent-secondary: #a67c3d;
  --danger: #b3492f;
  --accent-subtle: rgba(92, 107, 47, 0.12);
  --accent-text: var(--accent);
  --badge-bg: #dce8d1;
  --badge-border: #b9cba3;
  --badge-text: #47531f;
  --card-bg: var(--bg-secondary);
  --code-bg: #1b1e1b;
  --code-text: #e6ede6;
  --code-border: #2a2f2a;
  --shadow-sm: 0 1px 2px 0 rgba(31, 36, 25, 0.05);
  --shadow-md: 0 4px 12px -2px rgba(31, 36, 25, 0.06), 0 2px 6px -1px rgba(31, 36, 25, 0.04);
  --max-width: 1040px;
  --max-prose: 720px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

[data-theme="dark"] {
  --bg: #0a0b0a;
  --bg-primary: var(--bg);
  --bg-secondary: #151715;
  --bg-elevated: #1b1e1b;
  --bg-tertiary: var(--bg-elevated);
  --border: #2a2f2a;
  --border-color: var(--border);
  --border-hover: #3a423a;
  --text-primary: #e6ede6;
  --text-secondary: #9aa89a;
  --text-muted: #788578;
  --accent: #3ddc84;
  --accent-hover: #5eeba0;
  --accent-secondary: #e8c547;
  --danger: #e8544a;
  --accent-subtle: rgba(61, 220, 132, 0.12);
  --accent-text: var(--accent);
  --badge-bg: rgba(61, 220, 132, 0.15);
  --badge-border: rgba(61, 220, 132, 0.3);
  --badge-text: var(--accent);
  --card-bg: var(--bg-secondary);
  --code-bg: #1b1e1b;
  --code-text: #e6ede6;
  --code-border: #2a2f2a;
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.6);
  --shadow-md: 0 6px 16px -2px rgba(0, 0, 0, 0.7);
}

/* ==========================================================================
   Base & Reset
   ========================================================================== */

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a:hover {
  text-decoration: underline;
}

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

/* ==========================================================================
   Layout Containers
   ========================================================================== */

.site-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.main-content {
  flex: 1;
  padding: 2.5rem 0 4rem;
}

.section-header {
  margin-bottom: 2.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-brand:hover {
  text-decoration: none;
}

.nav-brand-title {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.nav-brand-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.55rem;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border-radius: 9999px;
  border: 1px solid var(--badge-border);
}

.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  padding: 0.25rem 0;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  text-decoration: none;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -0.25rem;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--accent);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.4rem;
  color: var(--text-primary);
  cursor: pointer;
}

/* ==========================================================================
   Home Hero & About Section
   ========================================================================== */

.hero-section {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border-color);
}

.photo-container,
.hero-avatar-wrapper {
  flex-shrink: 0;
  width: 100%;
  max-width: 182px;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--border-color);
  position: relative;
}

.photo-container img,
.hero-avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  display: block;
}

.hero-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  min-width: 0;
}

.hero-name {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  line-height: 1.15;
}

.hero-tagline {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--accent-text);
  line-height: 1.4;
}

.hero-affiliations {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: auto;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.social-btn:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--border-hover);
  text-decoration: none;
  transform: translateY(-1px);
}

.bio-content {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 3.5rem;
}

.bio-content h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 2rem 0 1rem;
}

.bio-content p {
  margin-bottom: 1.25rem;
}

.bio-content ul {
  margin: 1rem 0 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.bio-content strong {
  color: var(--text-primary);
}

/* ==========================================================================
   News Timeline
   ========================================================================== */

.timeline {
  position: relative;
  padding-left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0.5rem;
  bottom: 0.5rem;
  left: 0.5rem;
  width: 2px;
  background-color: var(--border-color);
}

.timeline-item {
  position: relative;
}

.timeline-dot {
  position: absolute;
  top: 0.35rem;
  left: -2rem;
  width: 1rem;
  height: 1rem;
  border-radius: 50%;
  background-color: var(--bg-primary);
  border: 2px solid var(--accent);
  box-shadow: 0 0 0 3px var(--bg-primary);
}

.timeline-content {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.timeline-header {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.timeline-date {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
  letter-spacing: 0.02em;
  transition: all var(--transition-fast);
}

/* Category Badges for News & Milestones (Light Mode) */
.badge-cat-career {
  background-color: rgba(166, 124, 61, 0.12);
  color: #a67c3d;
  border-color: rgba(166, 124, 61, 0.25);
}

.badge-cat-presentation {
  background-color: rgba(61, 122, 128, 0.12);
  color: #3d7a80;
  border-color: rgba(61, 122, 128, 0.25);
}

.badge-cat-publication {
  background-color: rgba(58, 95, 143, 0.12);
  color: #3a5f8f;
  border-color: rgba(58, 95, 143, 0.25);
}

.badge-cat-outreach {
  background-color: rgba(181, 86, 47, 0.12);
  color: #b5562f;
  border-color: rgba(181, 86, 47, 0.25);
}

.badge-cat-talk {
  background-color: rgba(107, 84, 144, 0.12);
  color: #6b5490;
  border-color: rgba(107, 84, 144, 0.25);
}

/* Category Badges for News & Milestones (Dark Mode) */
[data-theme="dark"] .badge-cat-career {
  background-color: rgba(232, 197, 71, 0.15);
  color: #e8c547;
  border-color: rgba(232, 197, 71, 0.3);
}

[data-theme="dark"] .badge-cat-presentation {
  background-color: rgba(79, 184, 196, 0.15);
  color: #4fb8c4;
  border-color: rgba(79, 184, 196, 0.3);
}

[data-theme="dark"] .badge-cat-publication {
  background-color: rgba(91, 141, 217, 0.15);
  color: #5b8dd9;
  border-color: rgba(91, 141, 217, 0.3);
}

[data-theme="dark"] .badge-cat-outreach {
  background-color: rgba(217, 119, 87, 0.15);
  color: #d97757;
  border-color: rgba(217, 119, 87, 0.3);
}

[data-theme="dark"] .badge-cat-talk {
  background-color: rgba(167, 139, 216, 0.15);
  color: #a78bd8;
  border-color: rgba(167, 139, 216, 0.3);
}

/* Dynamic CSS Custom Properties fallback for future categories */
.badge[style*="--cat-light"] {
  color: var(--cat-light);
  background-color: color-mix(in srgb, var(--cat-light) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--cat-light) 25%, transparent);
}

[data-theme="dark"] .badge[style*="--cat-dark"] {
  color: var(--cat-dark);
  background-color: color-mix(in srgb, var(--cat-dark) 15%, transparent);
  border: 1px solid color-mix(in srgb, var(--cat-dark) 30%, transparent);
}

.badge-oral {
  background-color: rgba(166, 124, 61, 0.15);
  color: #7a5823;
  border: 1px solid rgba(166, 124, 61, 0.25);
}

[data-theme="dark"] .badge-oral {
  background-color: rgba(232, 197, 71, 0.15);
  color: var(--accent-secondary);
  border: 1px solid rgba(232, 197, 71, 0.3);
}

.timeline-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
}

.timeline-title a {
  color: var(--text-primary);
}

.timeline-title a:hover {
  color: var(--accent-text);
}

.timeline-body {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.home-news-section {
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-color);
}

.home-news-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.view-all-link {
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* ==========================================================================
   Publications Cards & Groupings
   ========================================================================== */

.year-group {
  margin-bottom: 3.5rem;
}

.year-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
}

.pub-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.pub-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.pub-card.has-image {
  grid-template-columns: 220px 1fr;
}

.pub-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.pub-image-wrapper {
  overflow: hidden;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  aspect-ratio: 16 / 10;
  background-color: var(--bg-tertiary);
}

.pub-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.pub-card:hover .pub-image {
  transform: scale(1.02);
}

.pub-details {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.pub-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.pub-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.35;
}

.pub-meta-badges {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.pub-authors {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.pub-authors strong {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 3px;
}

.pub-venue-line {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent-text);
}

.pub-abstract {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.pub-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pub-btn:hover {
  background-color: var(--accent-subtle);
  border-color: var(--accent);
  color: var(--accent-text);
  text-decoration: none;
}

.bibtex-drawer {
  display: none;
  margin-top: 1rem;
  padding: 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  overflow-x: auto;
  position: relative;
}

.bibtex-drawer.open {
  display: block;
}

.bibtex-drawer pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-secondary);
}

.bibtex-copy-btn {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  cursor: pointer;
  color: var(--text-primary);
}

.bibtex-copy-btn:hover {
  background: var(--bg-tertiary);
}

/* ==========================================================================
   Teaching
   ========================================================================== */

.teaching-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.teaching-card {
  padding: 1.5rem;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.teaching-card:hover {
  border-color: var(--border-hover);
}

.teaching-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
}

.teaching-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.teaching-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.teaching-institution {
  font-weight: 600;
  color: var(--accent-text);
}

.teaching-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ==========================================================================
   Media Grid
   ========================================================================== */

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.75rem;
}

.media-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.media-card:hover {
  text-decoration: none;
  transform: translateY(-3px) scale(1.01);
  border-color: var(--border-hover);
  box-shadow: 0 10px 24px -4px rgba(0, 0, 0, 0.12), 0 4px 8px -2px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .media-card:hover {
  box-shadow: 0 10px 24px -4px rgba(0, 0, 0, 0.6), 0 4px 8px -2px rgba(0, 0, 0, 0.4);
}

.media-card:hover .media-title {
  color: var(--accent-text);
}

.media-card:hover .media-link-btn {
  color: var(--accent-hover);
}

.media-card:hover .media-link-btn svg {
  transform: translate(2px, -2px);
}

.media-thumbnail-wrapper {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: var(--bg-tertiary);
  overflow: hidden;
}

.media-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.media-card:hover .media-thumbnail {
  transform: scale(1.03);
}

.media-type-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.6rem;
  background: rgba(15, 23, 42, 0.8);
  color: #f8fafc;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}

.media-duration-badge {
  position: absolute;
  bottom: 0.75rem;
  right: 0.75rem;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 500;
  padding: 0.2rem 0.5rem;
  background: rgba(0, 0, 0, 0.75);
  color: #ffffff;
  border-radius: 4px;
}

.media-content {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}

.media-source {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.media-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text-primary);
}

.media-desc {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-secondary);
  flex: 1;
}

.media-action {
  margin-top: 0.5rem;
}

.media-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-text);
  transition: color var(--transition-fast);
}

.media-link-btn svg {
  transition: transform var(--transition-fast);
}

/* ==========================================================================
   Blog Listing & Article
   ========================================================================== */

.blog-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.blog-card {
  padding: 1.75rem;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.blog-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.blog-card-title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--text-primary);
}

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

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

.blog-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.read-time-pill {
  font-family: var(--font-mono);
  background-color: var(--bg-tertiary);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.blog-lang {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.blog-author {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.blog-author strong {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 3px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-pill {
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.blog-summary {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* Long-form Article Page */

.article-container {
  max-width: var(--max-prose);
  margin: 0 auto;
}

.article-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 2rem;
  color: var(--text-muted);
}

.article-back:hover {
  color: var(--accent-text);
}

.article-header {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.article-title {
  font-size: 2.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.article-body {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-body h2 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-color);
}

.article-body h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 2rem 0 0.75rem;
}

.article-body p {
  margin-bottom: 1.5rem;
}

.article-body strong {
  color: var(--text-primary);
}

.article-body ul,
.article-body ol {
  margin: 1rem 0 1.5rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.article-body hr {
  border: 0;
  border-top: 1px solid var(--border-color);
  margin: 2.5rem 0;
}

.article-body blockquote {
  margin: 1.5rem 0;
  padding: 0.75rem 1.25rem;
  border-left: 3px solid var(--accent-secondary);
  background-color: var(--bg-tertiary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* Inline code */
.article-body :not(pre)>code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.2em 0.4em;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  color: var(--accent-text);
}

/* Pygments Code Blocks (Universal Dark Inset Panel) */
.codehilite {
  margin: 1.75rem 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--code-bg) !important;
  border: 1px solid var(--code-border);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.14), 0 1px 3px rgba(0, 0, 0, 0.08);
}

.codehilite pre {
  margin: 0;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.55;
  overflow-x: auto;
  color: var(--code-text);
  background-color: transparent !important;
}

/* Math block adjustments */
.katex-display {
  margin: 1.5rem 0 !important;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 0.5rem 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  padding: 3rem 0;
  margin-top: auto;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 768px) {
  .hero-section {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
  }

  .photo-container,
  .hero-avatar-wrapper {
    flex: none;
    width: 100%;
    max-width: 240px;
    aspect-ratio: 4 / 5;
    margin: 0 auto;
  }

  .photo-container img,
  .hero-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
  }

  .hero-affiliations {
    align-items: center;
  }

  .social-links {
    justify-content: center;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 4.25rem;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 1.25rem 1.5rem;
    gap: 1rem;
    box-shadow: var(--shadow-md);
  }

  .nav-menu.open {
    display: flex;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }

  .pub-card.has-image {
    grid-template-columns: 1fr;
  }

  .hero-name {
    font-size: 2rem;
  }

  .article-title {
    font-size: 1.85rem;
  }
}