:root {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --border: #e4e7eb;
  --text: #1a1d23;
  --text-muted: #6b7280;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

.hidden { display: none !important; }

.app {
  display: flex;
  height: 100vh;
}

/* ----------------- Sidebar ----------------- */
.sidebar {
  width: 280px;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-header h1 {
  font-size: 16px;
  font-weight: 600;
}

.mode-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mode-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.mode-label.expert { background: #e0e7ff; color: #3730a3; }
.mode-label.dev { background: #fef3c7; color: #92400e; }

.btn-icon {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  font-size: 14px;
}
.btn-icon:hover { background: var(--bg); }

.reviewer-select {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.reviewer-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.reviewer-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.reviewer-chip {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 12px;
  font-family: inherit;
  color: var(--text);
  cursor: pointer;
  transition: all 0.1s;
}
.reviewer-chip:hover { border-color: var(--primary); }
.reviewer-chip.selected {
  border-color: var(--primary);
  background: #eff6ff;
  color: var(--primary);
  font-weight: 600;
}
.reviewer-chip-add {
  border-style: dashed;
  color: var(--text-muted);
}

.case-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.case-item {
  padding: 10px 12px;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background 0.1s;
}
.case-item:hover { background: var(--bg); }
.case-item.active { background: #e0e7ff; }

.case-check {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 11px;
  color: white;
}
.case-check.done {
  background: var(--success);
  border-color: var(--success);
}

.case-title {
  flex: 1;
  font-size: 13px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dev-controls {
  padding: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* ----------------- Main panel ----------------- */
.main {
  flex: 1;
  overflow-y: auto;
  padding: 32px 40px;
}

.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
}

.anomaly-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.anomaly-header h2 {
  font-size: 22px;
  font-weight: 600;
}

.section {
  margin-bottom: 32px;
}

.section h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

/* Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.data-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table td:first-child {
  font-weight: 600;
  background: var(--bg);
  width: 35%;
  color: var(--text-muted);
}

/* Plots */
.plots-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.plots-grid img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: white;
}
.plot-figure {
  margin: 0;
}
.plot-figure figcaption {
  margin-top: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  text-align: center;
}
.plots-grid .plot-single {
  grid-column: span 2;
  max-width: 50%;
  margin: 0 auto;
}

/* Explanation */
.explanation-box {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  white-space: pre-wrap;
  font-family: inherit;
  line-height: 1.6;
}

/* Evaluation */
.eval-section {
  background: var(--panel);
  padding: 24px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.rating-row {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.rating-btn {
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 14px 8px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: all 0.1s;
}
.rating-btn:hover { border-color: var(--primary); }
.rating-btn.selected {
  border-color: var(--primary);
  background: #eff6ff;
}
.rating-num {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
}
.rating-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.tag-group-label,
.pref-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 8px;
}

.tag-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 16px;
}

.tag-chip {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12px;
  font-family: inherit;
  color: var(--text);
  cursor: pointer;
  transition: all 0.1s;
}
.tag-chip:hover { border-color: var(--primary); }
.tag-chip.selected {
  border-color: var(--primary);
  background: #eff6ff;
  color: var(--primary);
  font-weight: 600;
}

.comment-box {
  width: 100%;
  min-height: 80px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 13px;
  resize: vertical;
  margin-bottom: 12px;
}

.pref-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 16px;
}

.pref-btn {
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 13px;
  font-family: inherit;
  color: var(--text);
  cursor: pointer;
  transition: all 0.1s;
}
.pref-btn:hover { border-color: var(--primary); }
.pref-btn.selected {
  border-color: var(--primary);
  background: #eff6ff;
  font-weight: 600;
}

.save-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.save-status {
  font-size: 12px;
  color: var(--success);
}

/* Buttons */
.btn {
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.1s;
}
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary {
  background: var(--panel);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--bg); }
.btn-danger {
  background: var(--danger);
  color: white;
}
.btn-small {
  padding: 4px 10px;
  font-size: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
}

/* Editor */
.editor-view {
  max-width: 900px;
}
.editor-view h2 { font-size: 22px; margin-bottom: 24px; }
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  margin-top: 18px;
}
.form-input, .form-textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: inherit;
  font-size: 13px;
}
.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.ed-table {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 8px;
}
.ed-table-row {
  display: flex;
  gap: 8px;
}
.ed-table-row input {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 13px;
}
.ed-table-row button {
  padding: 4px 10px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
}

.ed-plots-existing {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 8px;
  margin-bottom: 8px;
}
.ed-plot-thumb {
  position: relative;
}
.ed-plot-thumb img {
  width: 100%;
  height: 100px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--border);
}
.ed-plot-thumb button {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--danger);
  color: white;
  border: none;
  border-radius: 4px;
  width: 24px;
  height: 24px;
  cursor: pointer;
}
.ed-plot-caption,
.ed-new-plot-caption {
  width: 100%;
  margin-top: 4px;
  padding: 4px 6px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  box-sizing: border-box;
}
.ed-new-plots {
  margin-bottom: 8px;
}
.ed-new-plot-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}
.ed-new-plot-name {
  font-size: 12px;
  color: var(--text-muted);
  flex: 0 0 40%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ed-new-plot-row .ed-new-plot-caption {
  margin-top: 0;
  flex: 1;
}

.editor-actions {
  margin-top: 24px;
  display: flex;
  gap: 8px;
}

/* Benchmark */
.benchmark-view { max-width: 900px; }
.benchmark-view h2 { font-size: 22px; margin-bottom: 24px; }
.benchmark-view h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 24px 0 12px;
}

.bench-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.bench-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}
.bench-label {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.bench-value {
  font-size: 32px;
  font-weight: 700;
  margin-top: 4px;
}

.bench-dist {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}
.bench-dist-row {
  display: grid;
  grid-template-columns: 30px 1fr 50px;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
}
.bench-dist-bar {
  background: var(--bg);
  border-radius: 4px;
  height: 24px;
  overflow: hidden;
}
.bench-dist-fill {
  background: var(--primary);
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s;
}

.bench-pref-row { grid-template-columns: 120px 1fr 70px; }
.bench-tag-row { grid-template-columns: 240px 1fr 40px; }
.bench-tag-label {
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bench-empty {
  font-size: 13px;
  color: var(--text-muted);
}

.bench-table-full td:first-child { width: auto; background: var(--panel); font-weight: 400; color: var(--text); }

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal-content {
  background: var(--panel);
  padding: 24px;
  border-radius: 8px;
  width: 360px;
  max-width: 90%;
}
.modal-content h3 { margin-bottom: 8px; }
.modal-content p { margin-bottom: 12px; color: var(--text-muted); }
.modal-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
.error-msg {
  color: var(--danger);
  font-size: 12px;
  margin-top: 8px;
}