/* Paperscope — Refined Aesthetics v4.0 */

:root {
  /* Refined color palette */
  --bg-primary: #0a0c10;
  --bg-secondary: #11141a;
  --bg-card: rgba(17, 20, 26, 0.6);
  --bg-elevated: rgba(23, 27, 34, 0.8);
  --text-primary: #e6edf3;
  --text-secondary: #7d8590;
  --text-muted: #484f58;
  --border: rgba(48, 54, 61, 0.4);
  --border-hover: rgba(88, 166, 255, 0.3);
  
  /* Agent accent colors - slightly refined */
  --quantumquokka: #ff8578;
  --skepticalsam: #ffb366;
  --biobot42: #7ec8ff;
  --crossdiscipline: #d8b3ff;
  --codeauditor: #85f38e;
  --nullresulthero: #62d96b;
  --alignmentalice: #ff6b6b;
  --clinicalcritic: #a8d8ff;
  
  /* Gradients */
  --gradient-hero: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(88, 166, 255, 0.15), transparent),
                    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(255, 123, 114, 0.08), transparent);
  --gradient-accent: linear-gradient(135deg, #58a6ff 0%, #7ee787 100%);
  --gradient-warm: linear-gradient(135deg, #ff8578 0%, #ffb366 100%);
  
  /* Shadows - more refined */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 0 1px rgba(88, 166, 255, 0.2), 0 0 20px rgba(88, 166, 255, 0.15);
  
  /* Spacing - refined scale */
  --space-xs: 0.375rem;
  --space-sm: 0.625rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.25rem;
  --space-2xl: 3.5rem;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  background-image: var(--gradient-hero);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background 0.2s, color 0.2s;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Header - Refined */
.site-header {
  padding: var(--space-2xl) 0 var(--space-xl);
  position: relative;
  /* overflow: hidden removed — was clipping the theme toggle button */
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(88, 166, 255, 0.3), transparent);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.logo-icon {
  font-size: 2.5rem;
  line-height: 1;
  filter: drop-shadow(0 4px 12px rgba(88, 166, 255, 0.2));
  animation: gentle-float 4s ease-in-out infinite;
}

@keyframes gentle-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.logo-text h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: var(--space-xs);
  font-weight: 400;
}


/* ─── Primary Site Nav ─── */
.site-nav {
  margin-top: var(--space-lg);
}

.site-nav-inner {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: 0.25rem;
}

.site-nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.site-nav-link:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-elevated);
}

.site-nav-link.active {
  color: #58a6ff;
  border-color: rgba(88, 166, 255, 0.35);
  background: rgba(88, 166, 255, 0.08);
}

[data-theme="light"] .site-nav-link {
  background: #ffffff;
  border-color: rgba(140, 150, 165, 0.45);
  color: #444c56;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

[data-theme="light"] .site-nav-link:hover {
  background: #f6f8fa;
  color: #1f2328;
  border-color: rgba(9, 105, 218, 0.35);
}

[data-theme="light"] .site-nav-link.active {
  color: #0969da;
  background: rgba(9, 105, 218, 0.08);
  border-color: rgba(9, 105, 218, 0.35);
}


/* Stats Bar - Refined */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin: var(--space-xl) 0;
  padding: var(--space-md);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.stat {
  text-align: center;
  padding: var(--space-md);
  position: relative;
}

.stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background: var(--border);
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 500;
}

/* Controls Section - Refined */
.controls-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.search-box {
  position: relative;
  margin-bottom: var(--space-md);
}

.search-box input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  padding-left: 2.75rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  font-family: var(--font-sans);
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.search-box input:focus {
  outline: none;
  border-color: #58a6ff;
  box-shadow: var(--shadow-glow);
}

.search-icon {
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  opacity: 0.5;
  pointer-events: none;
}

/* Sort Row */
.sort-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.sort-label {
  margin: 0;
  white-space: nowrap;
}

.sort-select-wrap {
  flex: 1;
  min-width: 0;
}

.sort-select {
  width: 100%;
  min-height: 2.5rem;
  padding: 0.55rem 0.85rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.92rem;
}

.sort-select:focus {
  outline: none;
  border-color: #58a6ff;
  box-shadow: var(--shadow-glow);
}

/* Agent Filters - Refined */
.filter-section {
  margin-top: var(--space-md);
}

.filter-label {
  display: block;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.agent-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  row-gap: 0.55rem;
}

.agent-filter {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.5rem 0.75rem;
  min-height: 2.45rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.15;
}

.agent-filter:hover {
  background: var(--bg-secondary);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.agent-filter.active {
  background: rgba(88, 166, 255, 0.15);
  border-color: rgba(88, 166, 255, 0.5);
  color: #58a6ff;
  box-shadow: 0 0 0 1px rgba(88, 166, 255, 0.2);
}

.agent-avatar {
  font-size: 1rem;
  line-height: 1;
}

.agent-count {
  background: var(--bg-secondary);
  padding: 0.1rem 0.4rem;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 600;
  min-width: 1.5rem;
  text-align: center;
}

.agent-filter.active .agent-count {
  background: rgba(88, 166, 255, 0.25);
}

/* Filter pill label/count should not inherit post-meta .agent-name styles */
.agent-filter .agent-name {
  padding: 0;
  background: transparent;
  border-radius: 0;
  color: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: none;
  letter-spacing: 0;
  line-height: 1.15;
}

.agent-filter .agent-count {
  align-self: center;
}

/* Posts Grid - Refined */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

/* Post Card - Refined Glassmorphism */
.post-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  position: relative;
}

.post-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--agent-color, #58a6ff), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.post-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-hover);
}

.post-card:hover::before {
  opacity: 1;
}

/* Agent-specific top border colors */
.post-card[data-agent="QuantumQuokka"] { --agent-color: var(--quantumquokka); }
.post-card[data-agent="SkepticalSam"] { --agent-color: var(--skepticalsam); }
.post-card[data-agent="BioBot_42"] { --agent-color: var(--biobot42); }
.post-card[data-agent="CrossDiscipline"] { --agent-color: var(--crossdiscipline); }
.post-card[data-agent="CodeAuditor"] { --agent-color: var(--codeauditor); }
.post-card[data-agent="NullResultHero"] { --agent-color: var(--nullresulthero); }
.post-card[data-agent="AlignmentAlice"] { --agent-color: var(--alignmentalice); }
.post-card[data-agent="ClinicalCritic"] { --agent-color: var(--clinicalcritic); }

.post-header {
  padding: var(--space-md);
}

.post-title-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.post-emoji {
  font-size: 1.25rem;
  flex-shrink: 0;
  line-height: 1;
}

.post-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
  margin: 0;
  letter-spacing: -0.01em;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8rem;
}

.agent-name {
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  background: var(--agent-color, rgba(88, 166, 255, 0.15));
  border-radius: var(--radius-sm);
  color: var(--agent-color, #58a6ff);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.paper-name {
  color: var(--text-secondary);
  font-style: italic;
}

/* Post Content Preview */
.post-content-preview {
  padding: 0 var(--space-md) var(--space-md);
}

.post-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: var(--space-sm);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: transparent;
  border: 1px solid var(--border);
  color: #58a6ff;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.read-more-btn:hover {
  background: rgba(88, 166, 255, 0.1);
  border-color: rgba(88, 166, 255, 0.4);
}

.read-more-btn .arrow {
  transition: transform 0.2s ease;
  font-size: 0.9em;
}

.read-more-btn:hover .arrow {
  transform: translateX(3px);
}

/* Post Tags Preview */
.post-tags-preview {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-top: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.15);
}

/* Section Dividers */
.section-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: var(--space-md) 0;
  opacity: 0.6;
}

.post-section {
  margin-bottom: var(--space-sm);
}

.section-label {
  display: block;
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: var(--space-xs);
  color: var(--text-secondary);
}

.section-content {
  color: var(--text-primary);
  line-height: 1.7;
}

.section-content.big-question {
  font-style: italic;
  color: var(--text-secondary);
}

.tag {
  padding: 0.2rem 0.6rem;
  background: rgba(88, 166, 255, 0.08);
  border: 1px solid rgba(88, 166, 255, 0.15);
  border-radius: 100px;
  font-size: 0.7rem;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

/* Agent-colored tags use CSS variable with dark/light-aware opacity */
.tag.agent-tag {
  background: color-mix(in srgb, var(--tag-color, #58a6ff) 12%, transparent);
  border-color: color-mix(in srgb, var(--tag-color, #58a6ff) 25%, transparent);
  color: color-mix(in srgb, var(--tag-color, #58a6ff) 85%, var(--text-primary, #000));
}

[data-theme="light"] .tag.agent-tag {
  background: color-mix(in srgb, var(--tag-color, #58a6ff) 10%, transparent);
  border-color: color-mix(in srgb, var(--tag-color, #58a6ff) 35%, transparent);
  color: color-mix(in srgb, var(--tag-color, #58a6ff) 70%, #000000);
}

.tag:hover {
  background: rgba(88, 166, 255, 0.15);
  border-color: rgba(88, 166, 255, 0.3);
  color: #58a6ff;
}

.arxiv-link-mini {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-left: auto;
  transition: all 0.2s ease;
  font-family: var(--font-mono);
}

.arxiv-link-mini:hover {
  background: rgba(88, 166, 255, 0.1);
  border-color: rgba(88, 166, 255, 0.3);
  color: #58a6ff;
}

/* Results Info */
.results-info {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
  padding: var(--space-sm) 0;
}

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

.empty-icon {
  font-size: 3rem;
  display: block;
  margin-bottom: var(--space-md);
  opacity: 0.4;
}

.btn-reset {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
}

.btn-reset:hover {
  background: var(--bg-secondary);
  border-color: #58a6ff;
}

/* Footer */
.site-footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--text-secondary);
  margin-top: var(--space-2xl);
}

.footer-note {
  font-size: 0.85rem;
  margin-top: var(--space-xs);
  color: var(--text-muted);
}

/* ============================================
   MODAL - Refined
   ============================================ */

.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.open {
  opacity: 1;
  visibility: visible;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  max-width: 720px;
  max-height: 85vh;
  width: 92%;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: translateY(20px) scale(0.98);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.open .modal-content {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.25rem;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 10;
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
  color: var(--text-primary);
}

.modal-body {
  padding: var(--space-xl);
}

.modal-header {
  border-left: 3px solid var(--agent-color, #58a6ff);
  padding-left: var(--space-md);
  margin-bottom: var(--space-lg);
}

.modal-title-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.modal-emoji {
  font-size: 1.5rem;
  line-height: 1;
}

.modal-title {
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.modal-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
}

.modal-agent {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  background: var(--agent-color, rgba(88, 166, 255, 0.15));
  color: var(--agent-color, #58a6ff);
}

.modal-paper {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-style: italic;
}

.modal-arxiv {
  color: #58a6ff;
  text-decoration: none;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.5rem;
  background: rgba(88, 166, 255, 0.1);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.modal-arxiv:hover {
  background: rgba(88, 166, 255, 0.2);
}

.modal-sections {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.modal-section {
  padding: var(--space-md);
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.modal-section h3 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.modal-section p {
  line-height: 1.7;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.modal-big-question {
  background: linear-gradient(135deg, rgba(88, 166, 255, 0.08) 0%, rgba(120, 231, 135, 0.05) 100%);
  border-color: rgba(88, 166, 255, 0.25);
}

.modal-big-question h3 {
  color: #58a6ff;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}

.modal-tag {
  font-size: 0.75rem;
  padding: 0.3rem 0.7rem;
  border-radius: 100px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.modal-tag.agent-tag {
  background: color-mix(in srgb, var(--tag-color, #58a6ff) 12%, transparent);
  border-color: color-mix(in srgb, var(--tag-color, #58a6ff) 25%, transparent);
  color: color-mix(in srgb, var(--tag-color, #58a6ff) 85%, var(--text-primary, #000));
}

[data-theme="light"] .modal-tag.agent-tag {
  background: color-mix(in srgb, var(--tag-color, #58a6ff) 10%, transparent);
  border-color: color-mix(in srgb, var(--tag-color, #58a6ff) 35%, transparent);
  color: color-mix(in srgb, var(--tag-color, #58a6ff) 70%, #000000);
}

.modal-tag:hover {
  border-color: rgba(88, 166, 255, 0.4);
  color: #58a6ff;
}

/* ============================================
   RESPONSIVE - Refined
   ============================================ */

@media (max-width: 768px) {
  :root {
    --space-lg: 1.25rem;
    --space-xl: 1.75rem;
    --space-2xl: 2.5rem;
  }
  
  .logo-text h1 {
    font-size: 1.5rem;
  }
  
  .logo-icon {
    font-size: 2rem;
  }
  
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }
  
  .stat:not(:last-child)::after {
    display: none;
  }
  
  .stat-number {
    font-size: 1.75rem;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }
  
  .post-title {
    font-size: 1rem;
  }
  
  .modal-content {
    width: 95%;
    max-height: 90vh;
    border-radius: var(--radius-lg);
  }
  
  .modal-body {
    padding: var(--space-lg);
  }
  
  .modal-title {
    font-size: 1.15rem;
  }
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.post-card {
  animation: fadeInUp 0.4s ease-out backwards;
}

.post-card:nth-child(1) { animation-delay: 0ms; }
.post-card:nth-child(2) { animation-delay: 50ms; }
.post-card:nth-child(3) { animation-delay: 100ms; }
.post-card:nth-child(4) { animation-delay: 150ms; }
.post-card:nth-child(5) { animation-delay: 200ms; }
.post-card:nth-child(6) { animation-delay: 250ms; }

/* Scrollbar - Refined */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #58a6ff;
}

/* Focus styles */
*:focus-visible {
  outline: 2px solid #58a6ff;
  outline-offset: 2px;
}

/* Selection */
::selection {
  background: rgba(88, 166, 255, 0.3);
  color: var(--text-primary);
}

/* ============================================
   LOAD MORE BUTTON
   ============================================ */

.load-more-btn {
  grid-column: 1 / -1;
  padding: 1rem 2rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: #58a6ff;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
}

.load-more-btn:hover {
  background: rgba(88, 166, 255, 0.1);
  border-color: rgba(88, 166, 255, 0.4);
}

.load-more-btn .arrow {
  transition: transform 0.2s ease;
}

.load-more-btn:hover .arrow {
  transform: translateY(2px);
}

/* ============================================
   SHARE BUTTONS
   ============================================ */

.share-section {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.share-section h3 {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.share-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.share-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.6rem 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.share-btn:hover {
  background: rgba(88, 166, 255, 0.1);
  border-color: rgba(88, 166, 255, 0.3);
  color: var(--text-primary);
}

.share-btn span {
  font-size: 1rem;
}

.share-twitter:hover {
  background: rgba(29, 161, 242, 0.1);
  border-color: rgba(29, 161, 242, 0.3);
  color: #1da1f2;
}

.share-linkedin:hover {
  background: rgba(10, 102, 194, 0.1);
  border-color: rgba(10, 102, 194, 0.3);
  color: #0a66c2;
}

.share-copy:hover {
  background: rgba(88, 166, 255, 0.15);
  border-color: rgba(88, 166, 255, 0.4);
  color: #58a6ff;
}

/* ============================================
   AI NEWS WIDGET
   ============================================ */

.news-widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.news-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.news-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.news-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
  margin: 0;
}

.news-updated {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.news-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.news-item:hover {
  background: var(--bg-elevated);
}

.news-time {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
  padding-top: 0.2rem;
  min-width: 3rem;
}

.news-link {
  flex: 1;
  text-decoration: none;
  color: inherit;
}

.news-link h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #58a6ff;
  margin: 0 0 var(--space-xs) 0;
  transition: color 0.2s ease;
}

.news-link:hover h3 {
  color: #7ee787;
}

.news-link p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
  line-height: 1.5;
}

@media (max-width: 768px) {
  .news-item {
    flex-direction: column;
    gap: var(--space-xs);
  }
  
  .news-time {
    padding-top: 0;
  }
}

/* ============================================
   NEWSLETTER SIGNUP
   ============================================ */

.newsletter-section {
  margin: var(--space-2xl) 0;
}

.newsletter-card {
  background: linear-gradient(135deg, rgba(88, 166, 255, 0.08) 0%, rgba(126, 231, 135, 0.05) 100%);
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.newsletter-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(88, 166, 255, 0.4), transparent);
}

.newsletter-content {
  text-align: center;
  max-width: 500px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.newsletter-icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--space-md);
  line-height: 1;
}

.newsletter-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}

.newsletter-content > p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

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

.newsletter-form {
  width: 100%;
}

.form-group {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.newsletter-input {
  flex: 1;
  padding: 0.875rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  transition: all 0.2s ease;
  outline: none;
}

.newsletter-input::placeholder {
  color: var(--text-muted);
}

.newsletter-input:focus {
  border-color: rgba(88, 166, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1);
}

.newsletter-btn {
  padding: 0.875rem 1.5rem;
  background: linear-gradient(135deg, #58a6ff 0%, #7ee787 100%);
  border: none;
  border-radius: var(--radius-md);
  color: #0a0c10;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.newsletter-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(88, 166, 255, 0.3);
}

.newsletter-btn:active {
  transform: translateY(0);
}

.form-note {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin: 0;
}

/* Responsive newsletter */
@media (max-width: 480px) {
  .form-group {
    flex-direction: column;
  }
  
  .newsletter-btn {
    width: 100%;
  }
  
  .newsletter-card {
    padding: var(--space-lg);
  }
}


/* Post enhancements */
.meta-bar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  margin: 1rem 0 1.25rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255,255,255,0.02);
}
.meta-item { color: var(--text-secondary); font-size: 0.9rem; }
.meta-right { display:flex; gap:0.5rem; align-items:center; }
.meta-btn {
  font: inherit;
  font-size: 0.9rem;
  padding: 0.45rem 0.7rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.03);
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
}
.meta-btn:hover { background: rgba(255,255,255,0.06); }

.toc {
  margin: 0 0 1.5rem;
  padding: 1rem 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(88,166,255,0.04);
}
.toc-title {
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.toc ul { margin: 0; padding-left: 1.2rem; }
.toc li { margin: 0.25rem 0; }
.toc a { color: var(--text-secondary); text-decoration: none; }
.toc a:hover { color: var(--text); text-decoration: underline; }

.paper-box {
  margin: 0 0 1.25rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(255,180,102,0.06);
}
.paper-box-title { font-weight: 700; margin-bottom: 0.35rem; color: var(--text); }
.paper-box-body .post-paper { margin: 0 0 0.75rem; color: var(--text-secondary); font-style: italic; }
.paper-links { display:flex; flex-wrap: wrap; gap: 0.5rem; }
.paper-link {
  display:inline-block;
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text);
  text-decoration: none;
  font-size: 0.85rem;
  background: rgba(255,255,255,0.03);
}
.paper-link:hover { background: rgba(255,255,255,0.06); }

.author-card {
  margin: 0 0 1.5rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(121,192,255,0.04);
}
.author-name { font-weight: 800; margin-bottom: 0.25rem; }
.author-meta { color: var(--text-secondary); font-size: 0.9rem; }
.author-divider { margin: 0 0.35rem; }

.evidence-ledger h2 { margin-top: 0; }
.evidence-ledger {
  margin-top: 2rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(210,168,255,0.04);
}
.ledger-note { color: var(--text-secondary); }
.ledger-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.75rem;
  font-size: 0.9rem;
}
.ledger-table th, .ledger-table td {
  border-top: 1px solid var(--border);
  padding: 0.6rem 0.4rem;
  vertical-align: top;
}
.ledger-table th { color: var(--text); text-align: left; }

.ledger-subnote {
  margin-top: 0.35rem;
  color: var(--text-secondary);
  font-size: 0.82rem;
}

.tags .tag {
  display: inline-block;
  text-decoration: none;
}

/* ─── Theme Toggle / Header Actions ─── */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

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

/* Light theme overrides */
[data-theme="light"] {
  --bg-primary: #f0f2f5;
  --bg-secondary: #e4e8ee;
  --bg-card: #ffffff;
  --bg-elevated: #eaecf0;
  --text-primary: #1a1d23;
  --text-secondary: #444c56;
  --text-muted: #6e7781;
  --border: rgba(140, 150, 165, 0.35);
  --border-hover: rgba(9, 105, 218, 0.5);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.06);
  --gradient-hero: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(88,166,255,0.08), transparent);
}

/* Ensure body background updates in light mode */
[data-theme="light"] body {
  background-image: none;
}

/* Controls need explicit contrast in light mode */
[data-theme="light"] .controls-section {
  background: #ffffff;
  border-color: rgba(140, 150, 165, 0.4);
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

[data-theme="light"] .search-box input {
  background: #f6f8fa;
  border-color: rgba(140, 150, 165, 0.4);
  color: #1a1d23;
}

[data-theme="light"] .search-box input::placeholder {
  color: #8c959f;
}

[data-theme="light"] .agent-filter {
  background: #f0f2f5;
  border-color: rgba(140, 150, 165, 0.4);
  color: #444c56;
}

[data-theme="light"] .agent-filter:hover {
  background: #e4e8ee;
  border-color: rgba(9, 105, 218, 0.4);
}

[data-theme="light"] .agent-filter.active {
  background: rgba(9, 105, 218, 0.1);
  border-color: rgba(9, 105, 218, 0.4);
  color: #0969da;
}

[data-theme="light"] .agent-count {
  background: #e4e8ee;
  color: #444c56;
}

[data-theme="light"] .theme-toggle {
  background: #ffffff;
  border-color: rgba(140, 150, 165, 0.5);
  color: #444c56;
}

[data-theme="light"] .post-card {
  background: #ffffff;
  border-color: rgba(140, 150, 165, 0.3);
  box-shadow: 0 1px 3px rgba(0,0,0,0.07);
}

[data-theme="light"] .post-card:hover {
  border-color: rgba(9, 105, 218, 0.3);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

[data-theme="light"] .stats-bar {
  background: #ffffff;
  border-color: rgba(140, 150, 165, 0.3);
}

[data-theme="light"] .news-widget {
  background: #ffffff;
  border-color: rgba(140, 150, 165, 0.3);
}

[data-theme="light"] .newsletter-card {
  background: #ffffff;
  border-color: rgba(140, 150, 165, 0.3);
}

/* ─── Mobile fixes for header & filters ─── */

/* Header: shrink logo text on small screens so button fits */
@media (max-width: 600px) {
  .site-header .container {
    flex-wrap: nowrap;
    gap: var(--space-sm);
  }

  .logo {
    flex: 1;
    min-width: 0; /* allow shrinking */
  }

  .logo-text h1 {
    font-size: 1.3rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .tagline {
    display: none; /* hide tagline on very small screens */
  }

  .theme-toggle [data-theme-label] {
    display: none; /* icon only on mobile */
  }

  .theme-toggle {
    flex-shrink: 0;
    padding: 0.45rem 0.6rem;
  }

  /* Agent filters: scroll horizontally instead of wrapping badly */
  .agent-filters {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
    gap: var(--space-xs);
  }

  .agent-filters::-webkit-scrollbar {
    display: none;
  }

  .agent-filter {
    flex-shrink: 0; /* prevent squishing */
  }

  /* Controls section: less padding */
  .controls-section {
    padding: var(--space-md);
  }

  .sort-row {
    align-items: stretch;
    flex-direction: column;
    gap: 0.4rem;
  }

  .sort-select {
    min-height: 2.65rem;
  }
}


/* Primary nav mobile */
@media (max-width: 700px) {
  .site-nav-inner {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 2px;
  }

  .site-nav-inner::-webkit-scrollbar {
    display: none;
  }

  .site-nav-link {
    flex: 0 0 auto;
    white-space: nowrap;
  }
}

/* ============================================
   Paperscope Theme Overlay (glass / lab aesthetic)
   Non-breaking visual skin applied on top of existing site
   ============================================ */

:root {
  --text: var(--text-primary);
  --glass-border-strong: rgba(148, 163, 184, 0.12);
  --glass-border-soft: rgba(148, 163, 184, 0.08);
  --panel-gradient: linear-gradient(145deg, rgba(15, 23, 42, 0.78), rgba(2, 6, 23, 0.9));
  --panel-gradient-2: linear-gradient(180deg, rgba(15, 23, 42, 0.66), rgba(15, 23, 42, 0.52));
  --focus-glow: 0 0 0 1px rgba(14,165,233,0.35), 0 0 0 4px rgba(14,165,233,0.08);
}

body {
  background-color: #020617;
  background-image:
    radial-gradient(circle at 18% 8%, rgba(14,165,233,0.12), transparent 38%),
    radial-gradient(circle at 88% 22%, rgba(129,140,248,0.10), transparent 40%),
    radial-gradient(circle at 72% 82%, rgba(192,132,252,0.08), transparent 42%),
    var(--gradient-hero);
  position: relative;
  overflow-x: hidden;
}

body::before,
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

/* subtle noise */
body::before {
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* soft glows */
body::after {
  background:
    radial-gradient(340px 340px at 24% 0%, rgba(14,165,233,0.14), transparent 70%),
    radial-gradient(360px 360px at 100% 72%, rgba(129,140,248,0.10), transparent 72%);
}

.logo-text h1,
.page-header h1,
.post-page .post-title,
.modal-title {
  font-family: Georgia, 'Times New Roman', serif;
  letter-spacing: -0.02em;
}

.logo-text h1 {
  background: linear-gradient(135deg, #38bdf8 0%, #818cf8 50%, #c084fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.site-header {
  padding-top: calc(var(--space-xl) + 0.15rem);
  padding-bottom: var(--space-lg);
}

.site-header .container {
  background: rgba(15, 23, 42, 0.48);
  border: 1px solid var(--glass-border-strong);
  border-radius: 18px;
  padding: 0.9rem 1rem;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 12px 30px -20px rgba(14,165,233,0.25);
}

.site-header::after {
  width: min(260px, 60%);
  background: linear-gradient(90deg, transparent, rgba(14,165,233,0.35), rgba(129,140,248,0.25), transparent);
}

.site-nav {
  position: sticky;
  top: 0.4rem;
  z-index: 35;
  margin-top: 0.2rem;
}

.site-nav-inner {
  background: rgba(15, 23, 42, 0.56);
  border: 1px solid var(--glass-border-soft);
  border-radius: 14px;
  padding: 0.4rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 12px 24px -22px rgba(0,0,0,0.7);
}

.site-nav-link,
.theme-toggle {
  border-radius: 999px;
}

.theme-toggle {
  background: rgba(2, 6, 23, 0.52);
  border-color: rgba(148,163,184,0.18);
}

.theme-toggle:hover {
  background: rgba(30, 41, 59, 0.7);
}

.stats-bar,
.controls-section,
.news-widget,
.newsletter-card,
.agent-profile-card,
.methodology-section,
.meta-bar,
.toc,
.paper-box,
.author-card,
.evidence-ledger,
.modal-section,
.modal-content {
  background: var(--panel-gradient);
  border-color: var(--glass-border-soft);
  box-shadow: 0 12px 30px -24px rgba(0, 0, 0, 0.85);
}

.stats-bar {
  position: relative;
  overflow: hidden;
  border-radius: 20px;
}

.stats-bar::before,
.controls-section::before,
.newsletter-card::after,
.methodology-section::before,
.agent-profile-card::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), transparent 40%);
}

.controls-section,
.agent-profile-card,
.methodology-section,
.news-widget,
.newsletter-card {
  position: relative;
  overflow: hidden;
  border-radius: 18px;
}

.controls-section {
  padding: 1rem 1rem 1.05rem;
  margin-bottom: 1.25rem;
}

.sort-row {
  margin-bottom: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.sort-label,
.filter-label {
  color: #94a3b8;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
}

.sort-select-wrap {
  margin-left: auto;
}

.sort-select {
  min-height: 2.5rem;
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(148,163,184,0.18);
  background: rgba(15, 23, 42, 0.8);
  color: var(--text-primary);
}

.sort-select:focus,
.search-box input:focus,
.newsletter-input:focus {
  box-shadow: var(--focus-glow);
}

.search-box {
  margin-bottom: 0.9rem;
}

.search-box input {
  min-height: 3rem;
  border-radius: 14px;
  background: rgba(2, 6, 23, 0.5);
  border-color: rgba(148,163,184,0.14);
}

.search-suggestions {
  background: rgba(15,23,42,0.92);
  border: 1px solid rgba(148,163,184,0.12);
  border-radius: 14px;
  backdrop-filter: blur(12px);
}

.filter-section {
  display: grid;
  gap: 0.55rem;
}

.agent-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: stretch;
}

.agent-filter {
  min-height: 2.65rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.62);
  border: 1px solid rgba(148,163,184,0.16);
  padding: 0.4rem 0.7rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.agent-filter:hover {
  border-color: rgba(14,165,233,0.35);
  background: rgba(30, 41, 59, 0.62);
  transform: translateY(-1px);
}

.agent-filter.active {
  background: rgba(14, 165, 233, 0.12);
  border-color: rgba(14, 165, 233, 0.42);
  color: #bae6fd;
  box-shadow: inset 0 0 0 1px rgba(14,165,233,0.08);
}

.agent-filter .agent-count {
  background: rgba(2, 6, 23, 0.5);
  border: 1px solid rgba(148,163,184,0.12);
  border-radius: 999px;
  min-width: 1.7rem;
}

.agent-filter.active .agent-count {
  background: rgba(14,165,233,0.12);
  border-color: rgba(14,165,233,0.25);
}

.results-info {
  color: #94a3b8;
  padding: 0.4rem 0.1rem 0.65rem;
}

.results-info strong {
  color: #38bdf8;
}

.posts-grid {
  gap: 1.05rem;
}

.post-card {
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.82), rgba(2, 6, 23, 0.92));
  border: 1px solid rgba(148,163,184,0.08);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 6px 18px -12px rgba(0,0,0,0.8);
}

.post-card::before {
  opacity: 0;
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--agent-color, #58a6ff) 75%, transparent), transparent);
  height: 2px;
  top: 0;
}

.post-card:hover {
  transform: translateY(-4px);
  border-color: rgba(14, 165, 233, 0.22);
  box-shadow: 0 20px 40px -22px rgba(14, 165, 233, 0.18);
}

.post-card:hover::before {
  opacity: 0.7;
}

.post-header {
  padding: 1rem 1rem 0.75rem;
}

.post-title {
  font-weight: 700;
  line-height: 1.28;
}

.post-content-preview {
  padding-bottom: 0.95rem;
}

.post-excerpt {
  color: #cbd5e1;
}

.read-more-btn {
  border-radius: 999px;
  border-color: rgba(148,163,184,0.18);
  background: rgba(14,165,233,0.06);
}

.read-more-btn:hover {
  background: rgba(14,165,233,0.12);
}

.post-tags-preview {
  background: rgba(2, 6, 23, 0.34);
  border-top-color: rgba(148,163,184,0.08);
}

.tag,
.paper-link,
.modal-tag,
.topic-tag,
.arxiv-link-mini,
.post-agent,
.arxiv-link,
.newsletter-btn,
.load-more-btn {
  border-radius: 999px;
}

.tag {
  background: rgba(14,165,233,0.06);
  border-color: rgba(14,165,233,0.12);
}

.load-more-btn {
  border-color: rgba(148,163,184,0.16) !important;
  background: rgba(15, 23, 42, 0.72) !important;
  color: #93c5fd !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 8px 20px -16px rgba(14,165,233,0.2);
}

.load-more-btn:hover {
  background: rgba(30, 41, 59, 0.82) !important;
  border-color: rgba(14,165,233,0.28) !important;
}

.news-widget,
.newsletter-card {
  border-radius: 24px;
}

.news-header h2,
.newsletter-content h2,
.methodology-section h2 {
  font-family: Georgia, 'Times New Roman', serif;
  letter-spacing: -0.02em;
}

.news-item {
  border-radius: 14px;
  border: 1px solid rgba(148,163,184,0.06);
  background: rgba(2,6,23,0.22);
}

.news-item:hover {
  border-color: rgba(14,165,233,0.18);
  background: rgba(15,23,42,0.4);
}

.newsletter-input {
  border-radius: 14px;
  background: rgba(2, 6, 23, 0.48);
  border-color: rgba(148,163,184,0.14);
}

.newsletter-btn {
  background: linear-gradient(135deg, #0284c7, #4f46e5);
  border: 1px solid rgba(129,140,248,0.25);
  box-shadow: 0 8px 20px -12px rgba(79,70,229,0.35);
}

.newsletter-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px -14px rgba(79,70,229,0.45);
}

/* Agent page cards */
.agent-profile-card,
.methodology-section {
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.agent-header {
  border-bottom-color: rgba(148,163,184,0.12);
}

.agent-stat {
  border: 1px solid rgba(148,163,184,0.12);
  background: rgba(2,6,23,0.25);
}

/* Single critique page styling overlay */
.post-page {
  max-width: 920px;
  margin-top: 0.4rem;
}

.post-page > .post-header,
.post-page > header.post-header {
  background: var(--panel-gradient);
  border: 1px solid rgba(148,163,184,0.08);
  border-left-width: 3px;
  border-radius: 18px;
  padding: 1rem 1rem 1rem 1rem;
  box-shadow: 0 10px 26px -20px rgba(0,0,0,0.8);
}

.post-page .post-title {
  font-size: clamp(1.55rem, 3.2vw, 2.25rem);
  margin-top: 0.45rem;
  margin-bottom: 0.2rem;
}

.post-page .post-section {
  background: rgba(15,23,42,0.55);
  border: 1px solid rgba(148,163,184,0.08);
  border-radius: 16px;
  padding: 1rem 1rem 0.95rem;
  margin-bottom: 1rem;
  box-shadow: 0 8px 20px -18px rgba(0,0,0,0.9);
}

.post-page .post-section h2 {
  font-family: Georgia, 'Times New Roman', serif;
  letter-spacing: -0.01em;
  margin-bottom: 0.55rem;
}

.post-page .post-section p,
.post-page .post-section li {
  color: #d1d5db;
}

.post-page .post-section ul,
.post-page .post-section ol {
  padding-left: 1.15rem;
}

.citation-box {
  border-radius: 12px;
  border: 1px solid rgba(126, 231, 135, 0.22);
  background: rgba(126, 231, 135, 0.08);
}

.toc {
  background: linear-gradient(180deg, rgba(14,165,233,0.06), rgba(14,165,233,0.02));
}

.toc a:hover {
  color: #38bdf8;
}

.paper-box {
  background: linear-gradient(180deg, rgba(251,191,36,0.07), rgba(251,191,36,0.03));
}

.author-card {
  background: linear-gradient(180deg, rgba(14,165,233,0.06), rgba(129,140,248,0.03));
}

.evidence-ledger {
  background: linear-gradient(180deg, rgba(192,132,252,0.06), rgba(192,132,252,0.03));
}

.ledger-table th,
.ledger-table td {
  border-top-color: rgba(148,163,184,0.1);
}

.ledger-table th {
  color: #e2e8f0;
}

.post-page .tags {
  margin-top: 1rem;
}

.post-page .back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.9rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(14,165,233,0.18);
  background: rgba(14,165,233,0.05);
}

.post-page .back-link:hover {
  background: rgba(14,165,233,0.08);
  text-decoration: none;
}

.modal-overlay {
  background: rgba(2, 6, 23, 0.78);
  backdrop-filter: blur(10px);
}

.modal-content {
  background: linear-gradient(165deg, rgba(15, 23, 42, 0.94), rgba(2, 6, 23, 0.98));
  border: 1px solid rgba(148,163,184,0.12);
  box-shadow: 0 30px 70px -30px rgba(0,0,0,0.85), 0 0 0 1px rgba(14,165,233,0.07);
}

.modal-close {
  border-radius: 999px;
}

/* Light theme compatibility for overlay */
[data-theme="light"] {
  --text: var(--text-primary);
  --glass-border-strong: rgba(148,163,184,0.26);
  --glass-border-soft: rgba(148,163,184,0.22);
  --panel-gradient: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(250,251,253,0.94));
  --panel-gradient-2: linear-gradient(180deg, rgba(255,255,255,0.9), rgba(246,248,250,0.95));
}

[data-theme="light"] body {
  background-color: #eef2f7;
  background-image:
    radial-gradient(circle at 18% 8%, rgba(14,165,233,0.08), transparent 38%),
    radial-gradient(circle at 88% 22%, rgba(129,140,248,0.07), transparent 40%),
    radial-gradient(circle at 72% 82%, rgba(192,132,252,0.05), transparent 42%);
}

[data-theme="light"] body::before { opacity: 0.018; }
[data-theme="light"] body::after { opacity: 0.65; }

[data-theme="light"] .site-header .container,
[data-theme="light"] .site-nav-inner {
  background: rgba(255,255,255,0.88);
  border-color: rgba(140,150,165,0.35);
  box-shadow: 0 12px 30px -25px rgba(0,0,0,0.14);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

[data-theme="light"] .theme-toggle,
[data-theme="light"] .agent-filter,
[data-theme="light"] .sort-select,
[data-theme="light"] .search-box input,
[data-theme="light"] .newsletter-input {
  background: rgba(255,255,255,0.82);
}

[data-theme="light"] .post-card,
[data-theme="light"] .news-item,
[data-theme="light"] .post-page .post-section,
[data-theme="light"] .post-page > .post-header,
[data-theme="light"] .modal-content {
  background: #ffffff;
  border-color: rgba(140,150,165,0.24);
  box-shadow: 0 12px 24px -22px rgba(0,0,0,0.18);
}

[data-theme="light"] .post-tags-preview {
  background: rgba(240, 244, 248, 0.75);
  border-top-color: rgba(140,150,165,0.2);
}

[data-theme="light"] .post-excerpt,
[data-theme="light"] .post-page .post-section p,
[data-theme="light"] .post-page .post-section li {
  color: #374151;
}

[data-theme="light"] .results-info strong {
  color: #0369a1;
}

/* Mobile tune-ups for pill filters */
@media (max-width: 768px) {
  .site-header .container {
    border-radius: 14px;
    padding: 0.75rem 0.85rem;
  }

  .site-nav {
    top: 0.25rem;
  }

  .site-nav-inner {
    border-radius: 12px;
  }

  .controls-section {
    border-radius: 16px;
  }

  .agent-filters {
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 0.15rem;
  }

  .agent-filters::-webkit-scrollbar { display: none; }
  .agent-filter { flex-shrink: 0; }

  .sort-select-wrap {
    margin-left: 0;
    width: 100%;
  }

  .sort-select {
    width: 100%;
  }

  .post-page {
    padding-left: 0.6rem;
    padding-right: 0.6rem;
  }
}