.centrifuge-planner {
  --planner-border: color-mix(in srgb, var(--md-default-fg-color) 18%, transparent);
  margin: 1.25rem 0;
  border: 1px solid var(--planner-border);
  border-radius: 0.55rem;
  overflow: hidden;
  background: var(--md-default-bg-color);
  box-shadow: 0 0.15rem 0.5rem rgba(0, 0, 0, 0.06);
}

.centrifuge-planner__layout {
  display: grid;
  grid-template-columns: minmax(14rem, 0.8fr) minmax(18rem, 1.2fr);
}

.centrifuge-planner__controls,
.centrifuge-planner__visual {
  padding: 1rem;
}

.centrifuge-planner__controls {
  border-right: 1px solid var(--planner-border);
}

.centrifuge-planner__field {
  display: block;
  margin-bottom: 0.8rem;
  font-weight: 600;
}

.centrifuge-planner__field small {
  display: block;
  margin-top: 0.16rem;
  color: var(--md-default-fg-color--light);
  font-weight: 400;
}

.centrifuge-planner input[type="number"] {
  width: 100%;
  margin-top: 0.28rem;
  padding: 0.48rem 0.55rem;
  border: 1px solid var(--planner-border);
  border-radius: 0.25rem;
  background: var(--md-default-bg-color);
  color: var(--md-default-fg-color);
  font: inherit;
}

.centrifuge-planner input[type="number"]:focus {
  border-color: var(--md-accent-fg-color);
  outline: 2px solid color-mix(in srgb, var(--md-accent-fg-color) 25%, transparent);
}

.centrifuge-planner__actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.centrifuge-planner .md-button {
  margin: 0;
  cursor: pointer;
}

.centrifuge-planner__result {
  margin: 1rem 0 0.25rem;
  color: var(--md-typeset-a-color);
  font-size: 1rem;
  font-weight: 700;
}

.centrifuge-planner__result--error {
  color: var(--md-code-hl-special-color, #d32f2f);
}

.centrifuge-planner__summary {
  min-height: 2.8em;
  margin: 0;
}

.centrifuge-planner__positions {
  margin: 0.8rem 0 0;
  font-size: 0.76rem;
}

.centrifuge-planner__positions dt {
  margin-top: 0.45rem;
  font-weight: 700;
}

.centrifuge-planner__positions dd {
  margin-left: 0;
  font-variant-numeric: tabular-nums;
}

.centrifuge-planner__visual {
  display: grid;
  place-items: center;
  min-width: 0;
}

.centrifuge-planner svg {
  width: min(100%, 28rem);
  height: auto;
  overflow: visible;
}

.centrifuge-planner__rotor {
  fill: color-mix(in srgb, var(--md-default-fg-color) 7%, var(--md-default-bg-color));
  stroke: var(--planner-border);
  stroke-width: 2;
}

.centrifuge-planner__hub {
  fill: var(--md-default-bg-color);
  stroke: var(--planner-border);
  stroke-width: 3;
}

.centrifuge-planner__slot {
  stroke: var(--md-default-bg-color);
  stroke-width: 2;
}

.centrifuge-planner__slot--empty {
  fill: color-mix(in srgb, var(--md-default-fg-color) 28%, transparent);
}

.centrifuge-planner__slot--sample {
  fill: var(--md-primary-fg-color);
}

.centrifuge-planner__slot--balance {
  fill: #f59e0b;
}

.centrifuge-planner__slot-label {
  fill: var(--md-default-fg-color--light);
  font-size: 11px;
  text-anchor: middle;
  dominant-baseline: central;
}

.centrifuge-planner__slot-label--sample,
.centrifuge-planner__slot-label--balance {
  fill: var(--md-default-fg-color);
  font-weight: 700;
}

.centrifuge-planner__group-label {
  fill: #fff;
  stroke: rgba(0, 0, 0, 0.72);
  stroke-width: 2px;
  paint-order: stroke fill;
  font-size: 10px;
  font-weight: 800;
  text-anchor: middle;
  dominant-baseline: central;
  pointer-events: none;
}

.centrifuge-planner__legend {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.72rem;
}

.centrifuge-planner__legend span {
  display: inline-block;
  width: 0.7rem;
  height: 0.7rem;
  margin-right: 0.25rem;
  border-radius: 50%;
  vertical-align: -0.05rem;
}

.centrifuge-planner__legend-sample { background: var(--md-primary-fg-color); }
.centrifuge-planner__legend-balance { background: #f59e0b; }
.centrifuge-planner__legend-empty { background: color-mix(in srgb, var(--md-default-fg-color) 28%, transparent); }

.centrifuge-planner__groups {
  width: min(100%, 28rem);
  margin-top: 0.85rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--planner-border);
  font-size: 0.72rem;
}

.centrifuge-planner__groups ol {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 0.25rem 1.25rem;
  margin: 0.4rem 0 0;
  padding-left: 1.25rem;
}

.centrifuge-planner__groups li {
  margin: 0;
  break-inside: avoid;
}

@media (max-width: 720px) {
  .centrifuge-planner__layout { grid-template-columns: 1fr; }
  .centrifuge-planner__controls { border-right: 0; border-bottom: 1px solid var(--planner-border); }
}