.project-guide-diagram {
  min-width: 0;
  color: var(--app-page-ink);
  scroll-margin-top: 90px;
}

.project-guide-page > .layer-icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

.project-guide-diagram[hidden],
.project-guide-diagram [hidden] {
  display: none !important;
}

.guide-diagram-controls {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--app-page-line);
  border-radius: 1rem;
  background: var(--app-page-surface);
}

.guide-diagram-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  gap: .75rem;
  min-width: 0;
  padding: 1rem;
  border-bottom: 1px solid var(--app-page-line);
  background: var(--app-page-surface);
}

.guide-diagram-filter {
  display: flex;
  flex: 1 1 13rem;
  flex-direction: column;
  gap: .35rem;
  min-width: 0;
  margin: 0;
  color: var(--app-page-muted);
  font-size: .75rem;
  font-weight: 650;
}

.guide-diagram-filter select {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  padding: .65rem 2rem .65rem .75rem;
  border: 1px solid var(--app-page-line);
  border-radius: .65rem;
  background-color: var(--app-page-canvas);
  color: var(--app-page-ink);
  font: inherit;
  font-size: .82rem;
  font-weight: 500;
}

.guide-diagram-actions {
  display: flex;
  flex: 0 1 auto;
  align-items: center;
  gap: .35rem;
  min-width: 0;
}

.project-guide-diagram .guide-diagram-actions button {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: .35rem;
  padding: .55rem .75rem;
  border: 1px solid var(--app-page-line);
  border-radius: .65rem;
  background: var(--app-page-surface);
  color: var(--app-page-ink);
  font-size: .8rem;
  font-weight: 650;
  line-height: 1.2;
  cursor: pointer;
}

.project-guide-diagram .guide-diagram-actions button:hover:not(:disabled) {
  border-color: var(--app-page-green);
  background: var(--app-page-green-soft);
  color: var(--app-page-green-dark);
}

.project-guide-diagram .guide-diagram-actions button:disabled {
  opacity: .5;
  cursor: default;
}

.guide-diagram-filter select:focus-visible,
.guide-diagram-frame:focus-visible {
  outline: 3px solid var(--app-page-green);
  outline-offset: 3px;
}

.guide-diagram-summary {
  flex: 1 0 100%;
  min-width: 0;
  margin: 0;
  color: var(--app-page-muted);
  font-size: .75rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.guide-diagram-frame {
  position: relative;
  max-width: 100%;
  max-height: 600px;
  min-width: 0;
  overflow: auto;
  background-color: var(--app-page-canvas);
  background-image: radial-gradient(color-mix(in srgb, var(--app-page-green) 20%, transparent) 1px, transparent 1px);
  background-size: 22px 22px;
  scrollbar-color: var(--app-page-line) var(--app-page-canvas);
  touch-action: auto;
}

.guide-diagram-svg {
  display: block;
  max-width: none;
  overflow: visible;
  font-family: inherit;
}

.guide-diagram-svg text {
  pointer-events: none;
}

.guide-diagram-icon {
  width: 1.15rem;
  height: 1.15rem;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
  vertical-align: -.2em;
}

.guide-diagram-plant .guide-diagram-icon {
  color: var(--node-color, var(--app-page-green));
}

.guide-diagram-zone-outline {
  fill: color-mix(in srgb, var(--app-page-green-soft) 75%, transparent);
  stroke: var(--app-page-line);
  stroke-width: 1;
}

.guide-diagram-zone-node,
.guide-diagram-plant {
  cursor: pointer;
  transition: opacity .18s ease;
}

.guide-diagram-zone-bubble {
  fill: var(--app-page-green-soft);
  stroke: var(--app-page-green);
  stroke-width: 1.5;
}

.guide-diagram-zone-label {
  fill: var(--app-page-green-dark);
  font-size: 13px;
  font-weight: 700;
}

.guide-diagram-zone-count {
  fill: var(--app-page-muted);
  font-size: 10.5px;
}

.guide-diagram-link {
  fill: none;
  stroke: color-mix(in srgb, var(--app-page-green) 55%, var(--app-page-line));
  stroke-width: 1.5;
  stroke-dasharray: 4 4;
  pointer-events: none;
  transition: opacity .18s ease, stroke-width .18s ease;
}

.guide-diagram-plant-card {
  fill: var(--app-page-surface);
  stroke: var(--app-page-line);
  stroke-width: 1.5;
}

.guide-diagram-node-name {
  fill: var(--app-page-ink);
  font-size: 13px;
  font-weight: 650;
}

.guide-diagram-node-scientific {
  fill: var(--app-page-muted);
  font-size: 10.5px;
  font-style: italic;
}

.guide-diagram-plant:hover .guide-diagram-plant-card,
.guide-diagram-plant.is-related .guide-diagram-plant-card {
  stroke: var(--node-color, var(--app-page-green));
  stroke-width: 2;
}

.guide-diagram-plant.is-selected .guide-diagram-plant-card,
.guide-diagram-zone-node.is-selected .guide-diagram-zone-bubble,
.guide-diagram-zone-node:hover .guide-diagram-zone-bubble {
  stroke: var(--app-page-green);
  stroke-width: 3;
}

.guide-diagram-plant.is-selected .guide-diagram-plant-card {
  fill: var(--app-page-green-soft);
}

.guide-diagram-plant.is-muted,
.guide-diagram-zone-node.is-muted {
  opacity: .72;
}

.guide-diagram-link.is-muted {
  opacity: .3;
}

.guide-diagram-link.is-selected,
.guide-diagram-link.is-related {
  stroke: var(--app-page-green);
  stroke-width: 2.5;
  opacity: 1;
}

.guide-diagram-svg [role="button"]:focus-visible {
  outline: 2px solid var(--app-page-green);
  outline-offset: 5px;
  opacity: 1;
}

.guide-diagram-plant:focus-visible .guide-diagram-plant-card,
.guide-diagram-zone-node:focus-visible .guide-diagram-zone-bubble {
  stroke: var(--app-page-green);
  stroke-width: 3;
}

.guide-diagram-legend {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem 1rem;
  margin: 0;
  padding: .85rem 1rem;
  border-top: 1px solid var(--app-page-line);
  color: var(--app-page-muted);
  font-size: .73rem;
  line-height: 1.5;
  list-style: none;
}

.guide-diagram-legend > span,
.guide-diagram-legend > li {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  min-width: 0;
  overflow-wrap: anywhere;
}

.guide-diagram-caption {
  margin: .8rem 0 0;
  padding: 0 1rem;
  color: var(--app-page-muted);
  font-size: .78rem;
  line-height: 1.7;
}

.guide-diagram-detail {
  min-width: 0;
  scroll-margin-top: 90px;
  margin: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--app-page-line);
  border-radius: 1rem;
  background: var(--app-page-surface);
  overflow-wrap: anywhere;
}

.guide-diagram-detail-header {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  min-width: 0;
  margin-bottom: .75rem;
}

.guide-diagram-detail-header > .guide-diagram-icon {
  width: 1.6rem;
  height: 1.6rem;
  margin-top: .05rem;
  color: var(--node-color, var(--app-page-green));
}

.guide-diagram-detail-header > div {
  min-width: 0;
}

.guide-diagram-detail h3 {
  margin: 0 0 .3rem;
  color: var(--app-page-ink);
  font-size: 1.13rem;
  font-weight: 700;
  line-height: 1.4;
}

.guide-diagram-detail h4 {
  margin: 0 0 .4rem;
  color: var(--app-page-ink);
  font-size: .78rem;
  font-weight: 700;
  line-height: 1.5;
}

.guide-diagram-detail p {
  margin: 0 0 .65rem;
  color: var(--app-page-muted);
  font-size: .84rem;
  line-height: 1.7;
}

.guide-diagram-detail-header p {
  margin: 0;
  font-size: .78rem;
}

.guide-diagram-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.5rem;
  margin-top: 1rem;
}

.guide-diagram-detail-grid > div {
  min-width: 0;
}

.guide-diagram-detail-sources {
  margin-top: .85rem;
  padding-top: .85rem;
  border-top: 1px solid var(--app-page-line);
}

.guide-diagram-detail-sources ul,
ul.guide-diagram-detail-sources {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem 1rem;
  padding-left: 0;
  list-style: none;
}

.guide-diagram-detail-sources li {
  min-width: 0;
  max-width: 100%;
}

.guide-diagram-detail-sources a {
  color: var(--app-page-green-dark);
  font-size: .74rem;
  line-height: 1.7;
  text-underline-offset: .18em;
}

.guide-diagram-detail-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem 1.25rem;
  margin-top: .75rem;
}

.guide-diagram-detail-actions a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: .35rem;
  color: var(--app-page-green-dark);
  font-size: .81rem;
  font-weight: 650;
  text-underline-offset: .2em;
}

[data-bs-theme="dark"] .guide-diagram-frame {
  background-image: radial-gradient(color-mix(in srgb, var(--app-page-green) 28%, transparent) 1px, transparent 1px);
}

@media (max-width: 575px) {
  .guide-diagram-toolbar { padding: .85rem; }
  .guide-diagram-filter { flex-basis: 100%; }
  .guide-diagram-actions { flex-wrap: wrap; }
  .guide-diagram-frame { max-height: 500px; }
  .guide-diagram-legend { gap: .55rem .85rem; padding: .85rem; }
  .guide-diagram-detail { padding: 1rem; }
  .guide-diagram-detail-grid { grid-template-columns: minmax(0, 1fr); gap: .65rem; }
}

@media (prefers-reduced-motion: reduce) {
  .guide-diagram-zone-node,
  .guide-diagram-plant,
  .guide-diagram-link { transition: none; }
}