.visio-host {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 56px);
  min-height: 480px;
  background: #f5f5f6;
}

.visio-ribbon {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 8px 12px;
  background: #fff;
  border-bottom: 1px solid #e2e2e4;
}

.visio-ribbon__group {
  display: flex;
  gap: 4px;
  align-items: center;
  padding-right: 10px;
  border-right: 1px solid #eee;
}

.visio-ribbon__group:last-child {
  border-right: none;
}

.visio-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.visio-split {
  flex: 1;
  display: grid;
  grid-template-rows: minmax(120px, 28%) 1fr;
  min-height: 0;
}

.visio-unplanned,
.visio-chart-panel {
  min-height: 0;
  background: #fff;
  border: 1px solid #e2e2e4;
  margin: 6px 8px;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
}

.visio-panel-title {
  font-size: 12px;
  font-weight: 600;
  padding: 6px 10px;
  border-bottom: 1px solid #eee;
  color: #444;
}

.visio-chart-surface {
  flex: 1;
  position: relative;
  min-height: 200px;
}

.visio-chart-surface canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: default;
}

.visio-status {
  display: flex;
  gap: 16px;
  padding: 4px 12px;
  font-size: 12px;
  background: #fff;
  border-top: 1px solid #e2e2e4;
  color: #555;
}

.visio-load-dialog {
  max-width: 720px;
  margin: 24px auto;
  padding: 20px;
  background: #fff;
  border-radius: 6px;
  border: 1px solid #e2e2e4;
}

.visio-load-dialog__machines {
  max-height: 320px;
  overflow: auto;
  border: 1px solid #eee;
  padding: 8px;
  margin: 12px 0;
}

.visio-collisions {
  max-height: 140px;
  overflow: auto;
  font-size: 12px;
  padding: 6px 10px;
}

/* ---- Canvas Lab (/tools/visio-canvas) ---------------------------- */

.visio-lab {
  flex: 1 1 0;
  min-height: 0;
  min-width: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-sizing: border-box;
  overflow: hidden;
}

.visio-lab__header {
  display: grid;
  gap: 6px;
  flex: 0 0 auto;
}

.visio-lab__header h1 {
  margin: 0;
  font-size: 20px;
}

.visio-lab__header p {
  margin: 0;
  color: #555;
  font-size: 13px;
}

.visio-lab__hint {
  margin: 0;
  padding: 8px 10px;
  background: #fff8e6;
  border: 1px solid #f0d78c;
  border-radius: 4px;
  font-size: 12px;
  color: #444;
}

.visio-lab__toolbar {
  flex: 0 0 auto;
  border: 1px solid #e2e2e4;
  border-radius: 4px;
}

.visio-lab__body {
  flex: 1 1 0;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr minmax(240px, 300px);
  gap: 8px;
}

.visio-lab__chart {
  min-width: 0;
  min-height: 0;
  height: 100%;
  background: #fff;
  border: 1px solid #e2e2e4;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.visio-lab__chart canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: default;
}

/* Operation hover tooltip (fixed, follows cursor after dwell). */
.visio-op-tooltip {
  position: fixed;
  z-index: 12000;
  min-width: 200px;
  max-width: 320px;
  padding: 8px 10px;
  border-radius: 6px;
  background: #1f2937;
  color: #f9fafb;
  font: 12px/1.35 "Segoe UI", sans-serif;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(2px);
  transition: opacity 80ms ease, transform 80ms ease, visibility 80ms;
}

.visio-op-tooltip.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.visio-op-tooltip__title {
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 6px;
  color: #fff;
}

.visio-op-tooltip__row {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 6px;
  margin-top: 2px;
}

.visio-op-tooltip__row span {
  color: #9ca3af;
}

.visio-op-tooltip__row strong {
  font-weight: 600;
  color: #f3f4f6;
}

.visio-op-tooltip__flags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 8px;
}

.visio-op-tooltip__flags span {
  background: #374151;
  color: #fde68a;
  border-radius: 3px;
  padding: 1px 6px;
  font-size: 11px;
}

.visio-op-tooltip__table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  line-height: 1.35;
}

.visio-op-tooltip__label {
  color: #d1d5db;
  padding-right: 8px;
  vertical-align: top;
  white-space: nowrap;
}

.visio-op-tooltip__value {
  color: #f9fafb;
  font-weight: 600;
  vertical-align: top;
}

.visio-op-tooltip__gap {
  height: 4px;
  line-height: 4px;
}

.visio-lab__side {
  min-height: 0;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 8px;
}

.visio-lab__metrics,
.visio-lab__log {
  font-family: ui-monospace, Consolas, monospace;
  font-size: 11px;
  background: #111;
  color: #9f9;
  padding: 10px;
  border-radius: 4px;
  white-space: pre-wrap;
  overflow: auto;
}

.visio-lab__log {
  color: #cde;
}

.visio-lab__log-title {
  color: #fff;
  font-weight: 600;
  margin-bottom: 6px;
}

.visio-lab__log-empty {
  color: #777;
}

@media (max-width: 1100px) {
  .visio-lab__body {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 220px;
  }
}