/* =============================================
   ISSCC 2026 Accelerator Survey - Dark Academic Theme
   ============================================= */

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-hover: #30363d;
  --border-color: #30363d;
  --border-subtle: #21262d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --accent: #58a6ff;
  --accent-hover: #79b8ff;
  --color-hw-arch: #e74c3c;
  --color-hw-circuit: #e67e22;
  --color-sw: #2ecc71;
  --color-codesign: #9b59b6;
  --color-system: #3498db;
  --navbar-height: 56px;
  --content-max-width: 1400px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);
  --shadow-elevated: 0 4px 12px rgba(0,0,0,0.4);
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 15px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial,
    "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

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

/* =============================================
   Navbar
   ============================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 24px;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(22, 27, 34, 0.85);
}

.navbar-brand a {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}
.navbar-brand a:hover {
  color: var(--accent);
}

/* =============================================
   Main App Container
   ============================================= */
#app {
  margin-top: var(--navbar-height);
  padding: 24px;
  max-width: var(--content-max-width);
  margin-left: auto;
  margin-right: auto;
}

/* =============================================
   Session Tabs
   ============================================= */
.session-tabs {
  display: flex;
  gap: 4px;
  padding: 16px 0 12px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.session-tab {
  padding: 6px 16px;
  border-radius: 20px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  font-size: 0.87rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.session-tab:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.session-tab.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* =============================================
   Filter Panel
   ============================================= */
.filter-panel {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  flex-wrap: wrap;
  align-items: center;
}

.filter-panel select,
.filter-panel input {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  font-size: 0.87rem;
  outline: none;
  transition: border-color var(--transition-fast);
  min-width: 140px;
}
.filter-panel select:focus,
.filter-panel input:focus {
  border-color: var(--accent);
}

.filter-panel input {
  min-width: 200px;
}

.paper-count {
  margin-left: auto;
  color: var(--text-secondary);
  font-size: 0.87rem;
  white-space: nowrap;
}

/* =============================================
   Statistics Bar
   ============================================= */
.stats-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
}

.stat-card h3 {
  font-size: 0.82rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-bar-row {
  display: flex;
  align-items: center;
  margin-bottom: 6px;
  font-size: 0.82rem;
}

.stat-bar-label {
  width: 72px;
  color: var(--text-secondary);
  flex-shrink: 0;
  text-align: right;
  padding-right: 10px;
}

.stat-bar-track {
  flex: 1;
  height: 18px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.stat-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.4s ease;
  min-width: 2px;
}

.stat-bar-value {
  width: 36px;
  text-align: right;
  color: var(--text-secondary);
  padding-left: 8px;
  flex-shrink: 0;
}

/* =============================================
   Comparison Table (CSS Grid) - 9 columns with power
   ============================================= */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
}

.comp-table {
  display: grid;
  grid-template-columns: 56px minmax(220px, 2fr) 100px 72px 72px 80px minmax(100px, 1fr) minmax(100px, 1fr) minmax(160px, 1.5fr);
  min-width: 1000px;
}

.comp-table .th,
.comp-table .td {
  padding: 10px 12px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.87rem;
  min-height: 42px;
}

.comp-table .th {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: none;
  cursor: pointer;
  user-select: none;
  position: sticky;
  top: 0;
  z-index: 2;
  white-space: nowrap;
  gap: 4px;
}
.comp-table .th:hover {
  color: var(--text-primary);
}
.comp-table .th .sort-arrow {
  font-size: 0.7rem;
  opacity: 0.4;
}
.comp-table .th .sort-arrow.active {
  opacity: 1;
  color: var(--accent);
}

.comp-table .row {
  display: contents;
  cursor: pointer;
}
.comp-table .row:hover .td {
  background: var(--bg-hover);
}
.comp-table .row .td {
  transition: background var(--transition-fast);
}

.comp-table .td.title-cell {
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 2px;
}
.comp-table .td.title-cell .paper-title {
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.35;
}
.comp-table .td.title-cell .paper-title-zh {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* =============================================
   Innovation Tags (Pill Badges)
   ============================================= */
.tags-cell {
  flex-wrap: wrap;
  gap: 4px;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 500;
  white-space: nowrap;
  border: 1px solid;
  line-height: 1.5;
}

.tag-hw-arch {
  color: var(--color-hw-arch);
  border-color: rgba(231, 76, 60, 0.35);
  background: rgba(231, 76, 60, 0.1);
}
.tag-hw-circuit {
  color: var(--color-hw-circuit);
  border-color: rgba(230, 126, 34, 0.35);
  background: rgba(230, 126, 34, 0.1);
}
.tag-sw {
  color: var(--color-sw);
  border-color: rgba(46, 204, 113, 0.35);
  background: rgba(46, 204, 113, 0.1);
}
.tag-codesign {
  color: var(--color-codesign);
  border-color: rgba(155, 89, 182, 0.35);
  background: rgba(155, 89, 182, 0.1);
}
.tag-system {
  color: var(--color-system);
  border-color: rgba(52, 152, 219, 0.35);
  background: rgba(52, 152, 219, 0.1);
}

.tag-neutral {
  color: var(--text-secondary);
  border-color: var(--border-color);
  background: var(--bg-tertiary);
}

.tag-analytical {
  color: var(--accent);
  border-color: rgba(88, 166, 255, 0.35);
  background: rgba(88, 166, 255, 0.1);
}

/* =============================================
   Detail Page
   ============================================= */
.detail-page {
  max-width: 960px;
  margin: 0 auto;
}

/* Back & Nav */
.detail-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.detail-nav .back-link {
  font-size: 0.93rem;
  font-weight: 500;
}

.detail-nav .paper-nav {
  display: flex;
  gap: 12px;
}

.detail-nav .paper-nav a,
.detail-nav .paper-nav span {
  font-size: 0.87rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: color var(--transition-fast);
}
.detail-nav .paper-nav a:hover {
  color: var(--accent);
}
.detail-nav .paper-nav span.disabled {
  opacity: 0.3;
  cursor: default;
}

/* Detail Title */
.detail-title {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 4px;
}
.detail-title-zh {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

/* Title Annotation (说文解字) */
.section-heading {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 28px 0 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-color);
}

.title-annotated {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding: 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  line-height: 2.4;
}

.segment {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}
.segment .original {
  font-weight: 600;
  font-size: 1.05rem;
  border-bottom: 2.5px solid var(--seg-color, var(--accent));
  padding-bottom: 2px;
  color: var(--text-primary);
}
.segment .annotation {
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-top: 2px;
  text-align: center;
  max-width: 160px;
  line-height: 1.3;
}

/* Metadata Cards */
.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.meta-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}
.meta-card .meta-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.meta-card .meta-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-word;
}

/* Highlighted meta cards (energy efficiency, area) */
.meta-card-highlight {
  border-color: rgba(88, 166, 255, 0.3);
  background: rgba(88, 166, 255, 0.05);
}
.meta-card-highlight .meta-value {
  font-size: 1.1rem;
  color: var(--accent);
}

/* =============================================
   Challenge <-> Idea Section
   ============================================= */
.challenge-idea-section {
  display: grid;
  grid-template-columns: 1fr 40px 1fr;
  gap: 0;
  margin-bottom: 20px;
}

.challenge-column,
.idea-column {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.connector-column {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  padding-top: 0;
}

.challenge-card,
.idea-card {
  border-radius: var(--radius-md);
  padding: 14px;
  font-size: 0.87rem;
  line-height: 1.55;
  position: relative;
  min-height: 60px;
  display: flex;
  align-items: center;
}

.challenge-card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.idea-card {
  border: 1px solid;
  color: var(--text-primary);
}

.idea-card.type-hw-arch {
  border-color: rgba(231,76,60,0.4);
  background: rgba(231,76,60,0.08);
}
.idea-card.type-hw-circuit {
  border-color: rgba(230,126,34,0.4);
  background: rgba(230,126,34,0.08);
}
.idea-card.type-sw {
  border-color: rgba(46,204,113,0.4);
  background: rgba(46,204,113,0.08);
}
.idea-card.type-codesign {
  border-color: rgba(155,89,182,0.4);
  background: rgba(155,89,182,0.08);
}
.idea-card.type-system {
  border-color: rgba(52,152,219,0.4);
  background: rgba(52,152,219,0.08);
}

.connector-arrow {
  color: var(--text-muted);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 60px;
}

.challenge-card .card-index,
.idea-card .card-index {
  position: absolute;
  top: -8px;
  left: 12px;
  font-size: 0.65rem;
  background: var(--bg-primary);
  padding: 0 6px;
  border-radius: 8px;
  color: var(--text-muted);
  font-weight: 600;
}

/* =============================================
   Innovations & Tags Grid
   ============================================= */
.innovations-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.innovation-pill {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 16px;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid;
}

.tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

/* =============================================
   Figure Gallery (Individual Figures with Captions)
   ============================================= */
.figure-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.figure-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
}
.figure-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-elevated);
}
.figure-card img {
  width: 100%;
  display: block;
}
.figure-placeholder {
  width: 100%;
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--text-muted);
  font-size: 1.1rem;
  font-weight: 600;
}

.figure-label {
  position: absolute;
  top: 8px;
  left: 8px;
  background: rgba(0, 0, 0, 0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

.figure-caption {
  padding: 10px 12px;
  background: rgba(0, 0, 0, 0.6);
  color: var(--text-secondary);
  font-size: 0.78rem;
  line-height: 1.45;
  backdrop-filter: blur(4px);
}

/* =============================================
   Page Image Gallery (Legacy)
   ============================================= */
.image-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.gallery-thumb {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  background: var(--bg-secondary);
}
.gallery-thumb:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-elevated);
}
.gallery-thumb img {
  width: 100%;
  display: block;
}

/* =============================================
   Markdown Content
   ============================================= */
.markdown-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 24px;
  font-size: 0.93rem;
  line-height: 1.75;
}

.markdown-content h1,
.markdown-content h2,
.markdown-content h3,
.markdown-content h4 {
  color: var(--text-primary);
  margin: 1.2em 0 0.6em;
  font-weight: 600;
}
.markdown-content h1 { font-size: 1.4rem; }
.markdown-content h2 { font-size: 1.2rem; }
.markdown-content h3 { font-size: 1.05rem; }

.markdown-content p {
  margin-bottom: 0.8em;
}

.markdown-content ul, .markdown-content ol {
  padding-left: 1.5em;
  margin-bottom: 0.8em;
}

.markdown-content li {
  margin-bottom: 0.3em;
}

.markdown-content code {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.87em;
}

.markdown-content pre {
  background: var(--bg-tertiary);
  padding: 14px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin-bottom: 1em;
}
.markdown-content pre code {
  background: none;
  padding: 0;
}

.markdown-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
  color: var(--text-secondary);
  margin-bottom: 0.8em;
}

.markdown-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1em;
}
.markdown-content th,
.markdown-content td {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  text-align: left;
  font-size: 0.87rem;
}
.markdown-content th {
  background: var(--bg-tertiary);
  font-weight: 600;
}

.markdown-content img {
  border-radius: var(--radius-sm);
  margin: 8px 0;
}

.markdown-content a {
  color: var(--accent);
}

/* =============================================
   Lightbox (with caption & counter)
   ============================================= */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.lightbox-overlay.active {
  display: flex;
}

.lightbox-content {
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.lightbox-content img {
  max-width: 90vw;
  max-height: 78vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.lightbox-info {
  margin-top: 12px;
  text-align: center;
  max-width: 80vw;
}

.lightbox-counter {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.78rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.lightbox-caption {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.85rem;
  line-height: 1.5;
  padding: 8px 16px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-sm);
  max-height: 8vh;
  overflow-y: auto;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: fixed;
  background: rgba(255,255,255,0.1);
  border: none;
  color: #fff;
  cursor: pointer;
  z-index: 2001;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}
.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255,255,255,0.25);
}

.lightbox-close {
  top: 20px;
  right: 20px;
  font-size: 1.5rem;
}
.lightbox-prev {
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
}
.lightbox-next {
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
}

/* =============================================
   Bottom Navigation (Detail Page)
   ============================================= */
.bottom-nav {
  display: flex;
  justify-content: space-between;
  padding: 20px 0 40px;
  border-top: 1px solid var(--border-color);
  margin-top: 12px;
}

.bottom-nav a,
.bottom-nav span {
  font-size: 0.9rem;
}
.bottom-nav span.disabled {
  color: var(--text-muted);
  opacity: 0.3;
}

/* =============================================
   Loading & Empty States
   ============================================= */
.loading {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.loading-spinner {
  display: inline-block;
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 12px;
}

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

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

/* =============================================
   Analytical Tags Filter
   ============================================= */
.analytical-tags-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0 12px;
  margin-bottom: 4px;
}
.analytical-tag-btn {
  padding: 4px 12px;
  border-radius: 14px;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.analytical-tag-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.analytical-tag-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* =============================================
   Affiliation Logo
   ============================================= */
.affil-logo {
  width: 36px;
  height: 36px;
  border-radius: 4px;
  vertical-align: middle;
  margin-right: 6px;
  object-fit: contain;
}

/* =============================================
   Pie Chart
   ============================================= */
.pie-chart-container {
  display: flex;
  align-items: center;
  gap: 16px;
}
.pie-chart {
  width: 120px;
  height: 120px;
  flex-shrink: 0;
}
.pie-legend {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.pie-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}
.pie-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.pie-legend-count {
  color: var(--text-muted);
  margin-left: auto;
}

/* =============================================
   Abstract Section
   ============================================= */
.abstract-section {
  margin-bottom: 20px;
}
.abstract-text {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* =============================================
   Bilingual Cards
   ============================================= */
.card-text-zh {
  margin-bottom: 4px;
}
.card-text-en {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
  font-style: italic;
}

/* =============================================
   Reader Container
   ============================================= */
.reader-container {
  margin: 24px 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
}
.reader-modes {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}
.reader-mode-btn {
  padding: 6px 16px;
  border-radius: 16px;
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.reader-mode-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.reader-mode-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.reader-slide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  min-height: 300px;
}
.reader-figure {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}
.reader-figure img {
  width: 100%;
  border-radius: var(--radius-md);
  cursor: pointer;
}
.reader-text {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-secondary);
  overflow-y: auto;
  max-height: 500px;
  padding-right: 8px;
}
.reader-text-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 8px;
}
.reader-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
}
.reader-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.reader-nav-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.reader-dots {
  display: flex;
  gap: 6px;
}
.reader-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.reader-dot.active {
  background: var(--accent);
  border-color: var(--accent);
}
/* Reader full-text mode */
.reader-fulltext {
  max-height: 600px;
  overflow-y: auto;
  padding-right: 8px;
}
/* Reader gallery mode */
.reader-gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

/* =============================================
   Detailed Metrics
   ============================================= */
.meta-card .meta-multi-values {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.meta-card .meta-multi-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}
.meta-card .meta-condition {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 400;
}
.meta-card-comparison {
  border-color: rgba(46, 204, 113, 0.3);
  background: rgba(46, 204, 113, 0.05);
}
.meta-card-comparison .meta-value {
  color: var(--color-sw);
  font-size: 0.87rem;
}
.benchmarks-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
  margin-top: 8px;
}
.benchmarks-table th,
.benchmarks-table td {
  padding: 4px 8px;
  border: 1px solid var(--border-color);
  text-align: left;
}
.benchmarks-table th {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
}

/* =============================================
   Affiliation Badge
   ============================================= */
.affil-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 8px;
  font-size: 0.65rem;
  font-weight: 500;
  margin-left: 4px;
}
.affil-badge.academia {
  background: rgba(88, 166, 255, 0.15);
  color: var(--accent);
}
.affil-badge.industry {
  background: rgba(231, 76, 60, 0.15);
  color: var(--color-hw-arch);
}
.affil-badge.research_inst {
  background: rgba(46, 204, 113, 0.15);
  color: var(--color-sw);
}

/* =============================================
   Responsive (< 768px)
   ============================================= */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  #app {
    padding: 14px;
  }

  .navbar {
    padding: 0 14px;
  }
  .navbar-brand a {
    font-size: 1rem;
  }

  .session-tabs {
    gap: 4px;
  }
  .session-tab {
    padding: 5px 10px;
    font-size: 0.8rem;
  }

  .filter-panel {
    flex-direction: column;
    gap: 8px;
  }
  .filter-panel select,
  .filter-panel input {
    min-width: 100%;
  }
  .paper-count {
    margin-left: 0;
  }

  .stats-bar {
    grid-template-columns: 1fr;
  }

  .comp-table {
    grid-template-columns: 44px minmax(160px, 2fr) 80px 60px 60px 60px minmax(70px,1fr) minmax(70px,1fr) minmax(100px,1.5fr);
    font-size: 0.8rem;
  }

  .detail-page {
    max-width: 100%;
  }

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

  .challenge-idea-section {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .connector-column {
    flex-direction: row;
    justify-content: center;
    padding: 0;
  }
  .connector-arrow {
    height: auto;
    transform: rotate(90deg);
  }

  /* Figure gallery single column on mobile */
  .figure-gallery {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .image-gallery {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 8px;
  }

  .title-annotated {
    gap: 4px 10px;
    padding: 12px;
  }

  .reader-slide {
    grid-template-columns: 1fr;
  }
  .reader-gallery {
    grid-template-columns: 1fr;
  }
  .pie-chart-container {
    flex-direction: column;
    align-items: center;
  }
}