.dijkstra-main {
  max-width: 72rem;
}

.dijkstra-header {
  margin-bottom: 2rem;
  padding-top: 1rem;
}

.dijkstra-header .site-tagline {
  max-width: 45rem;
  margin-inline: auto;
}

.overview-panel,
.control-panel,
.graph-panel,
.status-panel,
.distance-panel,
.notes-panel,
.log-panel {
  padding: 1rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 8px;
  background: var(--wa-white);
}

.overview-panel,
.control-panel,
.dijkstra-layout,
.distance-panel,
.notes-panel,
.log-panel {
  margin-bottom: 1rem;
}

.panel-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.overview-panel {
  display: grid;
  gap: 0.85rem;
}

.overview-panel p,
.notes-panel p,
.status-text {
  margin: 0;
  color: var(--wa-ink-light);
  font-size: 0.92rem;
  line-height: 1.85;
}

.overview-terms {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.overview-terms span {
  display: inline-flex;
  gap: 0.45rem;
  align-items: center;
  min-height: 2rem;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 999px;
  background: var(--wa-bg);
  color: var(--wa-ink-light);
  font-size: 0.85rem;
}

.overview-terms strong {
  color: var(--wa-ink);
}

.control-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.85rem;
  align-items: center;
}

.mode-group,
.step-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.mode-button {
  min-height: 2.4rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 6px;
  background: var(--wa-white);
  color: var(--wa-ink);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
}

.mode-button.is-active {
  border-color: var(--wa-orange);
  background: var(--wa-orange-pale);
  color: var(--wa-orange-dark);
}

.dijkstra-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18rem;
  gap: 1rem;
  align-items: stretch;
}

.graph-wrap {
  position: relative;
  min-height: 27rem;
  margin-top: 0.85rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 8px;
  background: var(--wa-bg);
  overflow: hidden;
}

.graph-svg {
  width: 100%;
  height: 27rem;
  display: block;
}

.edge-line {
  stroke: #c8c2b8;
  stroke-width: 4;
}

.edge-line.is-active {
  stroke: var(--wa-orange);
}

.edge-label {
  fill: var(--wa-ink);
  font-size: 13px;
  font-weight: 700;
  paint-order: stroke;
  stroke: var(--wa-bg);
  stroke-linejoin: round;
  stroke-width: 5px;
  text-anchor: middle;
}

.node-circle {
  fill: var(--wa-white);
  stroke: var(--wa-gray-light);
  stroke-width: 3;
}

.node-circle.is-frontier {
  fill: #eef8fb;
  stroke: #2b7a9e;
}

.node-circle.is-current {
  fill: var(--wa-orange-pale);
  stroke: var(--wa-orange);
}

.node-circle.is-settled {
  fill: #e8f4dc;
  stroke: #4a7c59;
}

.node-text {
  fill: var(--wa-ink);
  font-size: 18px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: middle;
}

.node-distance {
  fill: var(--wa-gray);
  font-size: 12px;
  font-weight: 700;
  text-anchor: middle;
}

.status-panel {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.step-readout {
  display: grid;
  gap: 0.1rem;
}

.step-readout span,
.settled-box span {
  color: var(--wa-gray);
  font-weight: 700;
}

.step-readout strong {
  color: var(--wa-orange-dark);
  font-size: 3rem;
  line-height: 1;
}

.settled-box {
  display: grid;
  gap: 0.35rem;
  padding: 0.75rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 6px;
  background: var(--wa-bg);
}

.settled-box strong {
  color: var(--wa-ink);
  font-size: 1.25rem;
}

.distance-table {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.distance-card {
  display: grid;
  gap: 0.35rem;
  min-height: 6.6rem;
  padding: 0.75rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 6px;
  background: var(--wa-bg);
}

.distance-card.is-current {
  border-color: var(--wa-orange);
  background: var(--wa-orange-pale);
}

.distance-card.is-settled {
  border-color: #4a7c59;
  background: #e8f4dc;
}

.distance-card h3 {
  margin: 0;
  font-size: 1.1rem;
}

.distance-card dl {
  display: grid;
  gap: 0.12rem;
  margin: 0;
}

.distance-card div {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.distance-card dt {
  color: var(--wa-gray);
  font-size: 0.75rem;
  font-weight: 700;
}

.distance-card dd {
  margin: 0;
  color: var(--wa-ink);
  font-weight: 700;
}

.inline-token {
  display: inline-grid;
  place-items: center;
  min-height: 1.55rem;
  padding: 0 0.35rem;
  border-radius: 6px;
  background: var(--wa-orange-pale);
  color: var(--wa-orange-dark);
  font-weight: 700;
}

.event-log {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  padding-left: 1.3rem;
  color: var(--wa-ink-light);
  font-size: 0.9rem;
  line-height: 1.7;
}

.event-log li::marker {
  color: var(--wa-orange);
  font-weight: 700;
}

.info-modal.hidden {
  display: none;
}

.info-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.info-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 24, 39, 0.45);
}

.info-modal-panel {
  position: relative;
  z-index: 1;
  width: min(34rem, 100%);
  border: 1px solid var(--wa-gray-light);
  border-radius: 8px;
  background: var(--wa-white);
  box-shadow: 0 24px 60px rgba(17, 24, 39, 0.18);
}

.info-modal-header {
  display: grid;
  gap: 0.2rem;
  padding: 1.2rem 1.2rem 0.6rem;
}

.info-modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid var(--wa-gray-light);
  border-radius: 50%;
  background: var(--wa-bg);
  color: var(--wa-ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.info-modal-kicker {
  margin: 0;
  color: var(--wa-orange-dark);
  font-size: 0.78rem;
  font-weight: 700;
}

.info-modal-header h2 {
  margin: 0;
  padding-right: 2.5rem;
  font-size: 1.35rem;
}

.info-modal-body {
  display: grid;
  gap: 0.75rem;
  padding: 0 1.2rem 1.2rem;
  color: var(--wa-ink-light);
  line-height: 1.8;
}

.info-modal-body p {
  margin: 0;
}

@media (max-width: 860px) {
  .control-panel,
  .dijkstra-layout {
    grid-template-columns: 1fr;
  }

  .distance-table {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .step-controls {
    justify-content: flex-start;
  }
}

@media (max-width: 520px) {
  .graph-wrap,
  .graph-svg {
    min-height: 22rem;
    height: 22rem;
  }

  .distance-table {
    grid-template-columns: 1fr;
  }
}