:root {
  --wb-primary: #4f46e5;
  --wb-primary-light: #818cf8;
  --wb-primary-dark: #3730a3;
  --wb-trigger: #f59e0b;
  --wb-trigger-bg: #fef3c7;
  --wb-condition: #8b5cf6;
  --wb-condition-bg: #ede9fe;
  --wb-action: #10b981;
  --wb-action-bg: #d1fae5;
  --wb-delay: #6b7280;
  --wb-delay-bg: #f3f4f6;
  --wb-canvas-bg: #f8fafc;
  --wb-canvas-grid: #e2e8f0;
  --wb-node-shadow: 0 2px 8px rgba(0,0,0,0.1);
  --wb-node-shadow-hover: 0 4px 16px rgba(0,0,0,0.15);
}

.wb-layout {
  display: flex;
  height: calc(100vh - 60px);
  overflow: hidden;
}

.wb-toolbar {
  background: #fff;
  border-bottom: 1px solid #e2e8f0;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.wb-toolbar-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #1e293b;
  margin-right: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.wb-toolbar-title input {
  border: none;
  background: transparent;
  font-size: 1.1rem;
  font-weight: 600;
  color: #1e293b;
  padding: 4px 8px;
  border-radius: 6px;
  width: 250px;
}

.wb-toolbar-title input:focus {
  outline: none;
  background: #f1f5f9;
}

.wb-toolbar .btn {
  font-size: 0.85rem;
  padding: 6px 14px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.wb-status-badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.wb-status-draft { background: #f1f5f9; color: #64748b; }
.wb-status-active { background: #d1fae5; color: #059669; }

.wb-palette {
  width: 260px;
  min-width: 260px;
  background: #fff;
  border-right: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.wb-palette-section {
  padding: 16px;
  border-bottom: 1px solid #f1f5f9;
}

.wb-palette-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #94a3b8;
  margin-bottom: 10px;
}

.wb-palette-node {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: grab;
  margin-bottom: 4px;
  transition: all 0.15s;
  border: 1.5px solid transparent;
  user-select: none;
}

.wb-palette-node:hover {
  transform: translateX(4px);
}

.wb-palette-node:active {
  cursor: grabbing;
}

.wb-palette-node.trigger { background: var(--wb-trigger-bg); border-color: var(--wb-trigger); }
.wb-palette-node.condition { background: var(--wb-condition-bg); border-color: var(--wb-condition); }
.wb-palette-node.action { background: var(--wb-action-bg); border-color: var(--wb-action); }

.wb-palette-node-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: #fff;
  flex-shrink: 0;
}

.trigger .wb-palette-node-icon { background: var(--wb-trigger); }
.condition .wb-palette-node-icon { background: var(--wb-condition); }
.action .wb-palette-node-icon { background: var(--wb-action); }

.wb-palette-node-info {
  flex: 1;
  min-width: 0;
}

.wb-palette-node-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #1e293b;
}

.wb-palette-node-desc {
  font-size: 0.7rem;
  color: #64748b;
  margin-top: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.wb-canvas-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.wb-canvas {
  flex: 1;
  position: relative;
  background: var(--wb-canvas-bg);
  background-image: radial-gradient(circle, var(--wb-canvas-grid) 1px, transparent 1px);
  background-size: 20px 20px;
  overflow: hidden;
  cursor: default;
}

.wb-canvas-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.wb-canvas-empty {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #94a3b8;
  pointer-events: none;
}

.wb-canvas-empty i {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.3;
}

.wb-canvas-empty p {
  font-size: 1rem;
  margin: 0;
}

.wb-canvas-empty small {
  font-size: 0.8rem;
  opacity: 0.7;
}

.wb-node {
  position: absolute;
  min-width: 180px;
  max-width: 240px;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--wb-node-shadow);
  cursor: move;
  user-select: none;
  z-index: 10;
  transition: box-shadow 0.15s;
}

.wb-node:hover {
  box-shadow: var(--wb-node-shadow-hover);
}

.wb-node.selected {
  outline: 2.5px solid var(--wb-primary);
  outline-offset: 2px;
}

.wb-node.dragging {
  opacity: 0.85;
  z-index: 100;
}

.wb-node-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 12px 12px 0 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
}

.wb-node.trigger .wb-node-header { background: var(--wb-trigger); }
.wb-node.condition .wb-node-header { background: var(--wb-condition); }
.wb-node.action .wb-node-header { background: var(--wb-action); }
.wb-node.delay .wb-node-header { background: var(--wb-delay); }

.wb-node-body {
  padding: 10px 14px;
  font-size: 0.8rem;
  color: #64748b;
  border-top: 1px solid #f1f5f9;
}

.wb-node-config-preview {
  font-size: 0.75rem;
  color: #94a3b8;
  margin-top: 4px;
}

.wb-node-delete {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #ef4444;
  color: #fff;
  border: 2px solid #fff;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  cursor: pointer;
  z-index: 20;
}

.wb-node:hover .wb-node-delete { display: flex; }

.wb-port {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
  border: 2.5px solid #94a3b8;
  cursor: crosshair;
  z-index: 15;
  transition: all 0.15s;
}

.wb-port:hover {
  transform: scale(1.3);
  border-color: var(--wb-primary);
  background: var(--wb-primary-light);
}

.wb-port.input {
  top: -7px;
  left: 50%;
  transform: translateX(-50%);
}

.wb-port.input:hover {
  transform: translateX(-50%) scale(1.3);
}

.wb-port.output {
  bottom: -7px;
  left: 50%;
  transform: translateX(-50%);
}

.wb-port.output:hover {
  transform: translateX(-50%) scale(1.3);
}

.wb-port.output-yes {
  bottom: -7px;
  left: 30%;
  transform: translateX(-50%);
  border-color: var(--wb-action);
}

.wb-port.output-no {
  bottom: -7px;
  left: 70%;
  transform: translateX(-50%);
  border-color: #ef4444;
}

.wb-port-label {
  position: absolute;
  bottom: -20px;
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  white-space: nowrap;
  pointer-events: none;
}

.wb-port.output-yes .wb-port-label { left: 50%; transform: translateX(-50%); color: var(--wb-action); }
.wb-port.output-no .wb-port-label { left: 50%; transform: translateX(-50%); color: #ef4444; }

svg.wb-connections {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
}

.wb-connection {
  fill: none;
  stroke: #94a3b8;
  stroke-width: 2;
  pointer-events: stroke;
  cursor: pointer;
}

.wb-connection:hover {
  stroke: var(--wb-primary);
  stroke-width: 3;
}

.wb-connection-temp {
  fill: none;
  stroke: var(--wb-primary);
  stroke-width: 2;
  stroke-dasharray: 6,4;
  pointer-events: none;
}

.wb-config-panel {
  width: 320px;
  min-width: 320px;
  background: #fff;
  border-left: 1px solid #e2e8f0;
  display: none;
  flex-direction: column;
  overflow-y: auto;
}

.wb-config-panel.open {
  display: flex;
}

.wb-config-header {
  padding: 16px 20px;
  border-bottom: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.wb-config-header h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
  color: #1e293b;
}

.wb-config-close {
  background: none;
  border: none;
  color: #64748b;
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px;
}

.wb-config-body {
  padding: 20px;
  flex: 1;
}

.wb-config-group {
  margin-bottom: 16px;
}

.wb-config-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: #475569;
  margin-bottom: 6px;
}

.wb-config-group input,
.wb-config-group select,
.wb-config-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1.5px solid #e2e8f0;
  border-radius: 8px;
  font-size: 0.85rem;
  color: #1e293b;
  background: #fff;
  transition: border-color 0.15s;
}

.wb-config-group input:focus,
.wb-config-group select:focus,
.wb-config-group textarea:focus {
  outline: none;
  border-color: var(--wb-primary);
}

.wb-config-group textarea {
  resize: vertical;
  min-height: 80px;
}

.wb-list-page {
  padding: 24px;
}

.wb-list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.wb-list-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #1e293b;
  margin: 0;
}

.wb-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
}

.wb-list-card {
  background: #fff;
  border-radius: 12px;
  border: 1.5px solid #e2e8f0;
  padding: 20px;
  transition: all 0.2s;
  cursor: pointer;
}

.wb-list-card:hover {
  border-color: var(--wb-primary-light);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.1);
  transform: translateY(-2px);
}

.wb-list-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}

.wb-list-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: #1e293b;
}

.wb-list-card-desc {
  font-size: 0.85rem;
  color: #64748b;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.wb-list-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8rem;
  color: #94a3b8;
}

.wb-list-card-meta i {
  margin-right: 4px;
}

.wb-list-empty {
  text-align: center;
  padding: 60px 20px;
  color: #94a3b8;
}

.wb-list-empty i {
  font-size: 3rem;
  margin-bottom: 16px;
  opacity: 0.3;
}

.wb-list-empty p {
  font-size: 1rem;
  margin-bottom: 8px;
}

.wb-exec-history {
  margin-top: 20px;
}

.wb-exec-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  background: #f8fafc;
  margin-bottom: 6px;
  font-size: 0.8rem;
}

.wb-exec-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.wb-exec-status.completed { background: var(--wb-action); }
.wb-exec-status.failed { background: #ef4444; }
.wb-exec-status.running { background: var(--wb-trigger); }

@media (max-width: 768px) {
  .wb-layout {
    flex-direction: column;
    height: auto;
  }
  .wb-palette {
    width: 100%;
    min-width: auto;
    max-height: 200px;
    flex-direction: row;
    overflow-x: auto;
    border-right: none;
    border-bottom: 1px solid #e2e8f0;
  }
  .wb-palette-section {
    min-width: 200px;
  }
  .wb-canvas {
    min-height: 400px;
  }
  .wb-config-panel {
    width: 100%;
    min-width: auto;
    max-height: 300px;
    border-left: none;
    border-top: 1px solid #e2e8f0;
  }
  .wb-toolbar {
    padding: 8px 12px;
  }
  .wb-toolbar-title input {
    width: 160px;
  }
}