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

:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --border: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --accent-dim: #1f3a5f;
  --green: #3fb950;
  --orange: #d29922;
  --red: #f85149;
  --purple: #bc8cff;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  padding-top: 48px; /* space for fixed nav */
}

/* === Header === */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 48px;
  z-index: 100;
}

.header h1 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

.subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-left: 12px;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all 0.15s;
}

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

.btn-text {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 13px;
  cursor: pointer;
  padding: 4px 8px;
}
.btn-text:hover {
  color: var(--accent-hover);
}

/* === Container === */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 24px;
}

/* === Stats Section === */
.stats-section {
  margin-bottom: 16px;
}

.stats-toggle {
  margin-bottom: 8px;
}

.charts-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
  transition: all 0.3s;
}

.charts-wrapper.collapsed {
  display: none;
}

.chart-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  height: 280px;
  padding: 8px;
}

/* === Filters === */
.filters-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.filter-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 10px;
}
.filter-row:last-child {
  margin-bottom: 0;
}

.filter-label {
  flex-shrink: 0;
  width: 90px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  padding-top: 5px;
}

.filter-chips {
  display: flex;
  gap: 6px;
  flex-wrap: nowrap;
  overflow-x: auto;
}

.filter-chips-wrap {
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 20px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  transition: all 0.15s;
  white-space: nowrap;
  user-select: none;
}

.chip:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.chip.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.chip .chip-count {
  margin-left: 4px;
  font-size: 11px;
  opacity: 0.7;
}

/* Search */
.search-box {
  flex: 1;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 8px 12px 8px 36px;
  font-size: 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.15s;
}

.search-box input:focus {
  border-color: var(--accent);
}

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

.search-icon {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--text-secondary);
}

/* Footer */
.filter-footer {
  justify-content: space-between;
  align-items: center;
}

.result-count {
  font-size: 13px;
  color: var(--text-secondary);
}

/* === Table === */
.table-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

/* Tabulator overrides for dark theme consistency */
.tabulator {
  border: none !important;
  background: var(--bg-secondary) !important;
  font-size: 13px !important;
}

.tabulator .tabulator-header {
  background: var(--bg-tertiary) !important;
  border-bottom: 1px solid var(--border) !important;
}

.tabulator .tabulator-header .tabulator-col {
  background: var(--bg-tertiary) !important;
  border-right: 1px solid var(--border) !important;
}

.tabulator .tabulator-header .tabulator-col .tabulator-col-content {
  padding: 8px 10px !important;
}

.tabulator .tabulator-header .tabulator-col .tabulator-col-title {
  color: var(--text-secondary) !important;
  font-weight: 600 !important;
  font-size: 12px !important;
  text-transform: uppercase !important;
}

.tabulator .tabulator-tableholder .tabulator-table .tabulator-row {
  background: var(--bg-secondary) !important;
  border-bottom: 1px solid var(--border) !important;
}

.tabulator .tabulator-tableholder .tabulator-table .tabulator-row:hover {
  background: var(--bg-tertiary) !important;
}

.tabulator .tabulator-tableholder .tabulator-table .tabulator-row .tabulator-cell {
  border-right: 1px solid var(--border) !important;
  padding: 8px 10px !important;
  color: var(--text-primary) !important;
}

.tabulator .tabulator-footer {
  background: var(--bg-tertiary) !important;
  border-top: 1px solid var(--border) !important;
  color: var(--text-secondary) !important;
}

.tabulator .tabulator-footer .tabulator-page {
  background: var(--bg-tertiary) !important;
  border: 1px solid var(--border) !important;
  color: var(--text-secondary) !important;
}

.tabulator .tabulator-footer .tabulator-page.active {
  background: var(--accent-dim) !important;
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}

/* Title link styling */
.paper-title-link {
  color: var(--accent);
  text-decoration: none;
  cursor: pointer;
}
.paper-title-link:hover {
  text-decoration: underline;
  color: var(--accent-hover);
}
.paper-title-nolink {
  color: var(--text-primary);
}

/* Domain badge */
.domain-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}
.domain-badge.aiml { background: #1a3a2a; color: var(--green); }
.domain-badge.cv { background: #2a1a3a; color: var(--purple); }
.domain-badge.nlp { background: #1a2a3a; color: var(--accent); }
.domain-badge.se { background: #3a2a1a; color: var(--orange); }
.domain-badge.dbir { background: #3a1a1a; color: var(--red); }

/* Conference badge */
.conf-badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

/* Abstract row */
.abstract-row {
  padding: 12px 16px;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 1024px) {
  .charts-wrapper {
    grid-template-columns: 1fr;
  }
  .chart-box {
    height: 240px;
  }
}

@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
  .container {
    padding: 12px;
  }
  .filter-row {
    flex-direction: column;
    gap: 6px;
  }
  .filter-label {
    width: auto;
    padding-top: 0;
  }

}