/* ── Workbench Trigger ── */
.wb-trigger {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: 1px solid rgba(var(--color-primary-rgb),0.3);
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .25s cubic-bezier(0.22,1,0.36,1);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}
.wb-trigger:hover {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb),0.08);
  box-shadow: 0 4px 20px rgba(var(--color-primary-rgb),0.15);
  transform: translateY(-50%) scale(1.05);
}
.wb-trigger svg { width: 20px; height: 20px; fill: var(--color-primary); }
.wb-trigger .tip {
  display: none;
  position: absolute;
  right: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  padding: 4px 10px;
  font-size: 12px;
  white-space: nowrap;
  background: #333;
  color: #fff;
  border-radius: 4px;
  pointer-events: none;
}
.wb-trigger .tip::after {
  content: '';
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 4px solid transparent;
  border-left-color: #333;
}
.wb-trigger:hover .tip { display: block; }

/* ── Workbench Overlay ── */
.wb-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
}
.wb-overlay.hidden { display: none; }

/* ── Workbench Card ── */
.wb-card {
  background: #fff;
  border-radius: 16px;
  width: 90vw;
  max-width: 1200px;
  height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 48px rgba(0,0,0,0.15);
  overflow: hidden;
}

/* ── Workbench Header ── */
.wb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid #eef0f5;
  flex-shrink: 0;
}
.wb-header h3 { font-size: 15px; font-weight: 600; color: #333; }
.wb-close {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: #999;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .15s;
}
.wb-close:hover { background: rgba(238,85,85,0.08); color: var(--color-danger); }

/* ── Workbench Body ── */
.wb-body {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
}

/* left panel: datasets */
.wb-datasets {
  width: 220px;
  flex-shrink: 0;
  border-right: 1px solid #eef0f5;
  overflow-y: auto;
  padding: 12px;
}
.wb-datasets::-webkit-scrollbar { width: 3px; }
.wb-datasets::-webkit-scrollbar-thumb { background: #d0d0d0; border-radius: 2px; }
.wb-ds-label {
  font-size: 11px;
  color: #999;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}
.wb-ds-item {
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 4px;
  font-size: 13px;
  color: #555;
  transition: background .15s;
}
.wb-ds-item:hover { background: rgba(var(--color-primary-rgb),0.06); }
.wb-ds-item.active { background: rgba(var(--color-primary-rgb),0.12); color: var(--color-primary); }
.wb-ds-item .ds-icon { margin-right: 6px; font-size: 12px; }
.wb-field-group {
  padding: 6px 0 8px 0;
}
.wb-field-group-label {
  font-size: 10px;
  color: #aaa;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  padding-left: 4px;
}
.wb-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-left: 4px;
}
.wb-field {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px 3px 6px;
  border-radius: 12px;
  font-size: 11px;
  cursor: grab;
  user-select: none;
  transition: all .15s;
}
.wb-field:active { cursor: grabbing; }
.wb-field .field-icon {
  font-size: 10px;
  opacity: 0.7;
}
/* Dimension fields - green */
.wb-field.dimension {
  background: rgba(76,175,80,0.1);
  color: #4CAF50;
}
.wb-field.dimension:hover { background: rgba(76,175,80,0.18); }
/* Measure fields - blue */
.wb-field.measure {
  background: rgba(33,150,243,0.1);
  color: #2196F3;
}
.wb-field.measure:hover { background: rgba(33,150,243,0.18); }
.wb-empty-ds {
  text-align: center;
  padding: 40px 16px;
  color: #bbb;
  font-size: 13px;
}

/* data preview table */
.wb-data-preview {
  margin-top: 10px;
  border-top: 1px solid #eef0f5;
  padding-top: 8px;
}
.wb-data-preview .wb-preview-label {
  font-size: 10px;
  color: #aaa;
  margin-bottom: 4px;
}
.wb-data-preview table {
  width: 100%;
  border-collapse: collapse;
  font-size: 10px;
}
.wb-data-preview th {
  background: #f5f6fa;
  padding: 3px 6px;
  text-align: left;
  font-weight: 600;
  color: #555;
  white-space: nowrap;
  position: sticky;
  top: 0;
}
.wb-data-preview td {
  padding: 2px 6px;
  border-top: 1px solid #eee;
  color: #666;
  white-space: nowrap;
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* per-field chart type selector in Y drop zone */
.wb-dropped-field .chart-type-select {
  border: none;
  background: transparent;
  color: inherit;
  font-size: 10px;
  cursor: pointer;
  outline: none;
  padding: 0 2px;
  font-family: inherit;
}
.wb-dropped-field .chart-type-select option { color: #333; }

/* center panel: preview */
.wb-preview {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  min-width: 0;
  position: relative;
}
.wb-chart-el {
  width: 100%;
  height: 100%;
}
.wb-empty-hint {
  text-align: center;
  color: #ccc;
  font-size: 13px;
}
.wb-empty-hint svg { width: 48px; height: 48px; fill: #ddd; margin-bottom: 8px; }

/* right panel: config */
.wb-config {
  width: 240px;
  flex-shrink: 0;
  border-left: 1px solid #eef0f5;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.wb-config::-webkit-scrollbar { width: 3px; }
.wb-config::-webkit-scrollbar-thumb { background: #d0d0d0; border-radius: 2px; }
.wb-config-label {
  font-size: 11px;
  color: #999;
  margin-bottom: 4px;
}
.wb-title-input {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid #e0e3ea;
  border-radius: 8px;
  font-size: 13px;
  outline: none;
  background: rgba(255,255,255,0.6);
  color: #333;
}
.wb-title-input:focus { border-color: var(--color-primary); }

.wb-type-group {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.wb-type-group .tb-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: #888;
  cursor: pointer;
  transition: all .15s;
}
.wb-type-group .tb-btn:hover { background: rgba(var(--color-primary-rgb),0.1); color: var(--color-primary); }
.wb-type-group .tb-btn.active { background: rgba(var(--color-primary-rgb),0.12); color: var(--color-primary); }
.wb-type-group .tb-btn svg { width: 16px; height: 16px; fill: currentColor; }

/* drop zones */
.wb-drop-zone {
  min-height: 40px;
  border: 2px dashed #e0e3ea;
  border-radius: 8px;
  padding: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  transition: all .2s;
}
.wb-drop-zone.drag-over {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb),0.04);
}
.wb-drop-zone .wb-zone-hint {
  font-size: 12px;
  color: #ccc;
  pointer-events: none;
}
.wb-dropped-field {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 6px 3px 8px;
  border-radius: 12px;
  font-size: 11px;
}
.wb-dropped-field.dim-chip {
  background: rgba(76,175,80,0.12);
  color: #4CAF50;
}
.wb-dropped-field.mea-chip {
  background: rgba(33,150,243,0.12);
  color: #2196F3;
}
.wb-dropped-field .agg-select {
  border: none;
  background: transparent;
  color: inherit;
  font-size: 10px;
  cursor: pointer;
  outline: none;
  padding: 0 2px;
  font-family: inherit;
}
.wb-dropped-field .agg-select option { color: #333; }
.wb-dropped-field .color-pick {
  width: 16px; height: 16px; border: 1px solid rgba(0,0,0,0.15); border-radius: 3px;
  padding: 0; cursor: pointer; background: none; vertical-align: middle;
  -webkit-appearance: none; appearance: none;
}
.wb-dropped-field .color-pick::-webkit-color-swatch-wrapper { padding: 0; }
.wb-dropped-field .color-pick::-webkit-color-swatch { border: none; border-radius: 2px; }
.wb-dropped-field .remove-field {
  width: 14px;
  height: 14px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: inherit;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  opacity: 0.7;
}
.wb-dropped-field .remove-field:hover { opacity: 1; background: rgba(0,0,0,0.08); }

/* footer */
.wb-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  padding: 12px 20px;
  border-top: 1px solid #eef0f5;
  flex-shrink: 0;
}
.wb-btn-generate {
  padding: 8px 24px;
  border: none;
  border-radius: 8px;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
  margin-right: auto;
}
.wb-btn-generate:hover { opacity: 0.85; box-shadow: 0 4px 16px rgba(var(--color-primary-rgb),0.25); }
.wb-btn-generate:disabled { opacity: 0.4; cursor: not-allowed; }
.wb-btn-primary {
  padding: 7px 18px;
  border: none;
  border-radius: 8px;
  background: var(--gradient-primary);
  color: #fff;
  font-size: 13px;
  cursor: pointer;
  transition: opacity .2s;
}
.wb-btn-primary:hover { opacity: 0.85; }
.wb-btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }
.wb-btn-secondary {
  padding: 7px 18px;
  border: 1px solid #e0e3ea;
  border-radius: 8px;
  background: transparent;
  color: #666;
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
}
.wb-btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* responsive */
@media (max-width: 768px) {
  .wb-card { width: 96vw; height: 92vh; }
  .wb-body { flex-direction: column; }
  .wb-datasets { width: 100%; max-height: 140px; border-right: none; border-bottom: 1px solid #eef0f5; }
  .wb-config { width: 100%; border-left: none; border-top: 1px solid #eef0f5; }
  .wb-trigger { right: 8px; width: 36px; height: 36px; }
}