/* ===== Flow View Canvas ===== */
.flow-canvas {
  position: relative;
  flex: 1;
  overflow: auto;
  padding: 32px 24px;
  display: flex;
  align-items: flex-start;
}

.flow-canvas-inner {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  align-content: flex-start;
  gap: 12px 0;
  min-height: 120px;
  padding: 60px 20px;
  width: 100%;
  box-sizing: border-box;
}

/* ===== SVG Edge Layer ===== */
.flow-svg {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  overflow: visible;
}

.flow-edge-line {
  fill: none;
  stroke: var(--border);
  stroke-width: 2;
}

.flow-edge-arrow {
  fill: var(--border);
}

.flow-edge-goto .flow-edge-line {
  stroke: var(--accent);
  stroke-dasharray: 6 4;
  opacity: .6;
}

.flow-edge-goto .flow-edge-arrow {
  fill: var(--accent);
  opacity: .6;
}

.flow-edge-active .flow-edge-line {
  stroke: var(--success);
  stroke-width: 2.5;
}

.flow-edge-active .flow-edge-arrow {
  fill: var(--success);
}

/* ===== Nodes ===== */
.flow-node {
  position: relative;
  width: 140px;
  min-height: 72px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  transition: all .2s;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
  z-index: 1;
}

.flow-node:hover {
  border-color: var(--muted);
  box-shadow: 0 0 0 1px rgba(255,255,255,.05);
}

.flow-node.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(99,102,241,.25);
}

.flow-node.type-transform {
  border-color: rgba(249,115,22,.3);
}

.flow-node.type-transform.selected {
  border-color: var(--transform);
  box-shadow: 0 0 0 2px rgba(249,115,22,.25);
}

.flow-node-header {
  display: flex;
  align-items: center;
  gap: 6px;
}

.flow-node-num {
  font-size: 10px;
  font-weight: 700;
  color: var(--accent);
  min-width: 18px;
}

.flow-node.type-transform .flow-node-num {
  color: var(--transform);
}

.flow-node-type {
  font-size: 8px;
  font-weight: 700;
  letter-spacing: .5px;
  text-transform: uppercase;
  padding: 1px 5px;
  border-radius: 3px;
  background: rgba(99,102,241,.12);
  color: var(--accent);
}

.flow-node.type-transform .flow-node-type {
  background: rgba(249,115,22,.12);
  color: var(--transform);
}

.flow-node-name {
  font-size: 11px;
  color: var(--text);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.4;
}

.flow-node-status {
  font-size: 9px;
  font-weight: 600;
  margin-top: 2px;
}

/* ===== Node States ===== */
.flow-node.disabled {
  opacity: .4;
}

.flow-node.running {
  border-color: var(--warning);
  animation: flowPulse 1.2s infinite;
}

@keyframes flowPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(245,158,11,.3); }
  50% { box-shadow: 0 0 0 6px rgba(245,158,11,0); }
}

.flow-node.step-ok {
  border-color: var(--success);
}

.flow-node.step-err {
  border-color: var(--error);
}

.flow-node.skipped {
  border-color: var(--muted);
  opacity: .55;
}

/* ===== Connector (arrow between nodes) ===== */
.flow-connector {
  display: flex;
  align-items: center;
  position: relative;
  min-width: 32px;
  flex: 1 0 32px;
  max-width: 96px;
  z-index: 1;
}

.flow-connector-line {
  width: 100%;
  height: 2px;
  background: var(--border);
}

.flow-connector-arrow {
  position: absolute;
  right: 0;
  width: 0; height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 8px solid var(--border);
}

.flow-connector.connector-ok .flow-connector-line { background: var(--success); }
.flow-connector.connector-ok .flow-connector-arrow { border-left-color: var(--success); }
.flow-connector.connector-err .flow-connector-line { background: var(--error); }
.flow-connector.connector-err .flow-connector-arrow { border-left-color: var(--error); }
.flow-connector.connector-skip .flow-connector-line { background: var(--muted); opacity: .5; }
.flow-connector.connector-skip .flow-connector-arrow { border-left-color: var(--muted); opacity: .5; }
.flow-connector.connector-running .flow-connector-line { background: var(--warning); }
.flow-connector.connector-running .flow-connector-arrow { border-left-color: var(--warning); }

.flow-connector.connector-hidden .flow-connector-line { opacity: 0; }
.flow-connector.connector-hidden .flow-connector-arrow { opacity: 0; }

/* ===== Insert Button ===== */
.flow-insert-wrap {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity .15s;
  z-index: 2;
}

.flow-connector:hover .flow-insert-wrap {
  opacity: 1;
}

.flow-insert-btn {
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px dashed rgba(99,102,241,.4);
  background: var(--surface);
  color: rgba(99,102,241,.8);
  cursor: pointer;
  white-space: nowrap;
}

.flow-insert-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(99,102,241,.08);
}

.flow-insert-btn.tf {
  color: rgba(249,115,22,.8);
  border-color: rgba(249,115,22,.4);
}

.flow-insert-btn.tf:hover {
  border-color: var(--transform);
  color: var(--transform);
  background: rgba(249,115,22,.08);
}

/* ===== Start Node ===== */
.flow-node-start {
  width: 56px;
  min-height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  border: 2px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
  z-index: 1;
}

/* ===== End Node ===== */
.flow-node-end {
  width: 56px;
  min-height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  border: 2px solid var(--border);
  background: var(--surface);
  flex-shrink: 0;
  z-index: 1;
}

/* ===== Goto Arc (SVG overlay) ===== */
.flow-goto-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
  z-index: 0;
}

/* ===== Detail Panel ===== */
.flow-detail {
  border-bottom: 1px solid var(--border);
  max-height: 50vh;
  overflow-y: auto;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flow-detail-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.flow-detail-title {
  font-size: 13px;
  font-weight: 600;
  flex: 1;
}

.flow-detail-close {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 18px;
  cursor: pointer;
  padding: 2px 6px;
  line-height: 1;
}

.flow-detail-close:hover {
  color: var(--text);
}

.flow-detail-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.flow-detail-actions {
  display: flex;
  gap: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--border);
}

.flow-detail .step-result {
  margin-top: 4px;
  border-top: 1px solid var(--border);
  padding-top: 8px;
}

/* ===== Empty State ===== */
.flow-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--muted);
  font-size: 13px;
}