/* ========== 停车分配实验：深色专业风 ========== */
:root {
  --pp-bg:            #0f1623;
  --pp-bg-soft:       #141d2b;
  --pp-card:          #1e2736;
  --pp-card-2:        #242f42;
  --pp-border:        rgba(255, 255, 255, 0.09);
  --pp-text:          #e2e8f0;
  --pp-muted:         #94a3b8;
  --pp-heading:       #f1f5f9;
  --pp-primary:       #3b82f6;
  --pp-primary-hover: #2563eb;
  --pp-danger:        #f87171;
  --pp-success:       #34d399;
  --pp-shadow:        0 8px 24px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

.parking-pso-panel {
  padding: 10px;
  background: var(--pp-bg);
}

.hint {
  font-size: 0.84rem;
  color: var(--pp-muted);
  line-height: 1.6;
}

.hint--header {
  margin-bottom: 12px;
  padding: 11px 14px;
  border: 1px solid rgba(59, 130, 246, 0.22);
  background: rgba(59, 130, 246, 0.05);
  color: var(--pp-muted);
}

/* ===== Main two-column layout ===== */
.layout {
  display: grid;
  grid-template-columns:
    minmax(0, 2.2fr)
    minmax(22rem, 1fr);
  gap: 12px;
  align-items: stretch;
}

/* ===== Left: canvas area ===== */
.canvas-wrap {
  min-height: 0;
  padding: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--pp-border);
  background: var(--pp-bg-soft);
  box-shadow: var(--pp-shadow);
}

.map-stage {
  position: relative;
  width: 100%;
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  justify-content: center;
  gap: 8px 10px;
}

.map-stage #map {
  flex: 1 1 auto;
  min-width: min(100%, 260px);
  width: min(100%, 1120px);
  max-width: min(1120px, 100%);
  max-height: min(86vh, 980px);
  height: auto;
  object-fit: contain;
}

#map {
  display: block;
  border: 1px solid var(--pp-border);
  cursor: crosshair;
  touch-action: none;
  vertical-align: top;
  background: #111827;
}

/* Map legend */
.map-legend {
  position: static;
  z-index: 1;
  flex: 0 0 100%;
  width: 8.8rem;
  max-width: min(100%, 13rem);
  margin-top: 8px;
  margin-left: auto;
  padding: 8px 9px;
  border: 1px solid var(--pp-border);
  background: rgba(12, 18, 30, 0.9);
  line-height: 1.3;
  opacity: 0.7;
  transition: opacity 0.2s ease, background-color 0.2s ease;
}

.map-legend:hover {
  opacity: 0.97;
  background: rgba(12, 18, 30, 0.97);
}

.map-legend.is-compact .map-legend-list li:nth-child(n + 5) {
  display: none;
}

.map-legend-more {
  margin-top: 6px;
  width: 100%;
  padding: 4px 6px;
  font-size: 0.74rem;
}

.map-legend-title {
  margin: 0 0 4px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--pp-muted);
}

.map-legend-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.74rem;
  color: var(--pp-text);
}

.map-legend-list li {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin: 0.16rem 0;
}

.map-legend-swatch {
  flex-shrink: 0;
  width: 0.86rem;
  height: 0.56rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.map-legend-swatch--entrance {
  width: 0.54rem;
  height: 0.54rem;
  background: #d97706;
  border-color: #7c2d12;
}

.map-legend-swatch--building {
  background: linear-gradient(145deg, #c5ced6, #7a8794);
  border-color: #64748b;
}

.map-legend-swatch--slot {
  background: #8b95a3;
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.map-legend-swatch--grass {
  background: linear-gradient(135deg, #2d5f3a, #3a7a4a 50%, #245232);
  border-color: rgba(12, 35, 18, 0.45);
}

.map-legend-swatch--road {
  background: #3a4352;
  border-color: #2c3340;
}

.map-legend-swatch--strip {
  background: transparent;
  border: 1px dashed rgba(255, 255, 255, 0.32);
}

.map-legend-swatch--path {
  height: 1px;
  margin: 0.2rem 0;
  border: none;
  background: rgba(80, 180, 240, 0.9);
}

.map-legend-swatch--select {
  background: transparent;
  border: 1.5px solid #ea580c;
}

.map-caption,
.chart-caption {
  margin: 0;
  width: 100%;
  max-width: min(100%, 56rem);
  font-size: 0.82rem;
  color: var(--pp-muted);
  text-align: center;
  line-height: 1.45;
}

/* ===== Right: workspace ===== */
.workspace {
  padding: 0;
  display: flex;
  flex-direction: row;
  gap: 0;
  min-height: 0;
  border: 1px solid var(--pp-border);
  background: var(--pp-bg-soft);
  box-shadow: var(--pp-shadow);
}

/* Vertical icon tab navigation */
.side-tabs {
  display: flex;
  flex-direction: column;
  width: 52px;
  flex-shrink: 0;
  background: var(--pp-bg);
  border-right: 1px solid var(--pp-border);
  padding: 6px 0;
  gap: 2px;
  align-items: stretch;
}

.side-tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: 10px 4px;
  border: none;
  border-radius: 0;
  background: transparent;
  color: var(--pp-muted);
  cursor: pointer;
  font-size: 0.58rem;
  line-height: 1.2;
  text-align: center;
  transition: color 0.15s ease, background 0.15s ease;
  position: relative;
}

.side-tab:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--pp-text);
  border-color: transparent;
}

.side-tab.is-active {
  color: var(--pp-primary);
  background: rgba(59, 130, 246, 0.1);
  border-color: transparent;
}

.side-tab.is-active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--pp-primary);
  border-radius: 0 1px 1px 0;
}

.side-tab svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}

.side-tab span {
  font-size: 0.55rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 44px;
  letter-spacing: 0.01em;
}

/* Workspace body (right of side-tabs) */
.workspace-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.workspace-panels {
  flex: 1;
  min-height: 0;
  padding: 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Run button bar pinned at bottom */
.run-bar {
  flex-shrink: 0;
  padding: 8px 10px 10px;
  border-top: 1px solid var(--pp-border);
  background: var(--pp-bg-soft);
}

.run-bar > button {
  width: 100%;
  padding: 11px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

/* Tab panels */
.tab-panel {
  display: none;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
}

.tab-panel.is-active {
  display: flex;
}

/* Panel cards */
.panel {
  border: 1px solid var(--pp-border);
  padding: 12px;
  background: var(--pp-card);
  display: flex;
  flex-direction: column;
  min-height: 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.panel h2 {
  margin: 0 0 10px;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--pp-muted);
  font-weight: 600;
}

.panel-note {
  margin: 0 0 10px;
  font-size: 0.84rem;
  color: var(--pp-muted);
  line-height: 1.45;
}

.panel--scroll {
  overflow: hidden;
}

.panel--scroll > .vehicle-targets-list,
.panel--scroll > #props-form,
.panel--scroll > .empty-select {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.toolbar button {
  flex: 1 1 calc(50% - 4px);
  min-width: 7rem;
}

.toolbar--quick button {
  flex: 1 1 100%;
}

/* ===== Buttons ===== */
button,
select,
input {
  font: inherit;
}

button {
  padding: 8px 12px;
  border: 1px solid var(--pp-border);
  background: var(--pp-card-2);
  color: var(--pp-text);
  cursor: pointer;
  font-size: 0.88rem;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

button:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.18);
}

button.primary {
  background: var(--pp-primary);
  color: #ffffff;
  border-color: #1d4ed8;
}

button.primary:hover {
  background: var(--pp-primary-hover);
  border-color: #1e40af;
}

button.danger {
  border-color: rgba(248, 113, 113, 0.3);
  color: var(--pp-danger);
  background: var(--pp-card-2);
}

button.danger:hover {
  background: rgba(248, 113, 113, 0.1);
  border-color: rgba(248, 113, 113, 0.55);
}

button.active {
  outline: 2px solid var(--pp-primary);
  outline-offset: 0;
}

button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ===== Form controls ===== */
.prop-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px 11px;
  align-items: center;
  font-size: 0.88rem;
}

.prop-grid label {
  color: var(--pp-text);
}

.prop-grid input,
.prop-grid select,
.vehicle-target-row select {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--pp-border);
  background: var(--pp-bg);
  color: var(--pp-text);
}

.prop-grid input:focus,
.prop-grid select:focus,
.vehicle-target-row select:focus {
  outline: 1px solid var(--pp-primary);
  border-color: var(--pp-primary);
}

.prop-grid input[type="checkbox"] {
  width: auto;
  justify-self: start;
  accent-color: var(--pp-primary);
}

select option {
  background: var(--pp-card);
  color: var(--pp-text);
}

.panel--props {
  min-height: 160px;
  max-height: min(38vh, 19rem);
}

.panel--result {
  min-height: 200px;
  flex: 1 1 auto;
}

/* ===== Result metrics cards ===== */
.result-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 4px 0 8px;
}

.result-metric {
  background: var(--pp-card-2);
  border: 1px solid var(--pp-border);
  padding: 10px 8px 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  text-align: center;
}

.result-metric--total {
  grid-column: span 2;
  background: rgba(52, 211, 153, 0.07);
  border-color: rgba(52, 211, 153, 0.22);
}

.metric-label {
  font-size: 0.63rem;
  color: var(--pp-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 2px;
}

.metric-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--pp-text);
  line-height: 1;
}

.result-metric--total .metric-value {
  color: var(--pp-success);
  font-size: 1.75rem;
}

.metric-unit {
  font-size: 0.68rem;
  color: var(--pp-muted);
  margin-top: 1px;
}

.result-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--pp-success);
  margin: 2px 0 6px;
}

#chart {
  width: 100%;
  border: 1px solid var(--pp-border);
  background: var(--pp-card-2);
  display: block;
}

.empty-select {
  color: var(--pp-muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

/* ===== Vehicle assignment panel ===== */
.vehicle-targets-panel--solo {
  gap: 8px;
}

.vehicle-targets-panel--solo > h2 {
  margin: 0;
}

.vehicle-targets-panel--solo > .panel-note--vehicle {
  margin: 0;
  font-size: 0.8rem;
}

.vehicle-targets-actions {
  margin: 0;
}

.vehicle-targets-mode {
  margin: 0;
}

.vehicle-targets-actions button {
  width: 100%;
  padding: 8px 9px;
  font-size: 0.86rem;
}

.vehicle-targets-panel .vehicle-targets-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-right: 6px;
}

.vehicle-targets-panel--solo .vehicle-targets-list {
  padding: 8px 8px 10px 4px;
  background: var(--pp-bg);
  border: 1px solid var(--pp-border);
}

.vehicle-target-row {
  display: grid;
  grid-template-columns: 3.2rem 1fr 2.6rem 1fr;
  gap: 0.45rem;
  align-items: center;
  font-size: 0.85rem;
}

.vehicle-target-row label {
  color: var(--pp-muted);
}

/* ===== Pre / code blocks ===== */
.panel-pre {
  margin: 8px 0 0;
  padding: 10px;
  min-height: 2.8rem;
  max-height: 9rem;
  overflow: auto;
  border: 1px solid var(--pp-border);
  background: var(--pp-bg);
  color: var(--pp-text);
  font-size: 0.82rem;
  line-height: 1.45;
  white-space: pre-wrap;
}

#benchmark-output,
#recommend-output {
  margin: 0;
  padding: 10px;
  background: var(--pp-bg);
  border: 1px solid var(--pp-border);
  color: var(--pp-text);
  font-size: 0.8rem;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-x: auto;
}

.panel-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.panel-group__title {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--pp-muted);
}

/* Details/summary panel */
.panel--advanced {
  padding: 0;
  overflow: hidden;
}

.panel--advanced > summary {
  cursor: pointer;
  list-style: none;
  padding: 11px 12px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--pp-text);
  border-bottom: 1px solid var(--pp-border);
  background: var(--pp-card-2);
}

.panel--advanced > summary::-webkit-details-marker {
  display: none;
}

.panel--advanced[open] > summary {
  border-bottom-color: var(--pp-border);
}

.panel--advanced > .panel-group {
  padding: 10px 12px 12px;
}

.panel--advanced .panel {
  box-shadow: none;
  background: var(--pp-card);
}

/* ===== Pagination ===== */
.vehicle-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 8px;
}

.vehicle-pagination button {
  flex: 0 0 auto;
  min-width: 4.2rem;
  padding: 6px 8px;
  font-size: 0.82rem;
}

.vehicle-pagination-status {
  color: var(--pp-muted);
  font-size: 0.82rem;
}

/* ===== Result tip ===== */
.result-tip {
  margin-top: 6px;
  color: var(--pp-success);
  font-size: 0.82rem;
  line-height: 1.5;
  opacity: 0.9;
}

/* ===== Dark scrollbar ===== */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}
::-webkit-scrollbar-track {
  background: var(--pp-bg);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.14);
  border-radius: 2px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.26);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .parking-pso-panel {
    padding: 10px;
  }

  .layout {
    gap: 8px;
    grid-template-columns:
      minmax(0, 1.4fr)
      minmax(20rem, 1fr);
  }

  .map-stage #map {
    max-height: min(78vh, 820px);
    width: 100%;
    max-width: 100%;
  }
}

@media (min-width: 1200px) {
  .layout {
    grid-template-columns:
      minmax(0, 2.4fr)
      minmax(24rem, 1fr);
  }

  .map-stage #map {
    max-height: min(86vh, 980px);
  }
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  /* Side-tabs become bottom horizontal bar on mobile */
  .workspace {
    flex-direction: column;
  }

  .side-tabs {
    flex-direction: row;
    width: 100%;
    height: 48px;
    border-right: none;
    border-bottom: 1px solid var(--pp-border);
    padding: 0 4px;
    gap: 0;
    overflow-x: auto;
  }

  .side-tab {
    flex-direction: row;
    flex: 1 1 0;
    gap: 5px;
    padding: 6px 4px;
    min-width: 0;
  }

  .side-tab.is-active::before {
    left: 0;
    right: 0;
    top: auto;
    bottom: 0;
    width: auto;
    height: 2px;
  }

  .side-tab span {
    max-width: none;
    font-size: 0.62rem;
  }

  .map-stage #map {
    max-height: min(70vh, 680px);
  }

  .map-legend {
    width: min(100%, 12rem);
    max-width: none;
    margin-top: 6px;
    margin-left: 0;
    opacity: 0.92;
  }

  .map-legend.is-compact .map-legend-list li:nth-child(n + 5) {
    display: flex;
  }

  .vehicle-targets-list {
    max-height: min(34vh, 280px);
  }

  .panel--props {
    max-height: min(36vh, 260px);
  }
}