/* 地图网格 BFS/DFS — 与 demo.css / tokens 统一 */

.algo-main:has(#grid-search-panel.active) {
  max-width: 1100px;
}

.grid-search-panel {
  display: none;
  flex-direction: column;
  gap: 16px;
}

.grid-search-panel.active {
  display: flex;
}

#grid-search-panel .vis-container {
  margin-bottom: 0;
}

.grid-search-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 0;
  min-height: 400px;
}

.grid-controls {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  padding: 20px 16px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.grid-controls h4 {
  margin: 0 0 4px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: normal;
  text-transform: none;
}

.grid-size-row {
  display: flex;
  gap: 8px;
  align-items: center;
}

.grid-size-row input[type="number"] {
  width: 56px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.grid-size-row input[type="number"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-soft);
}

.grid-radio-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.grid-radio-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: background 0.15s ease, color 0.15s ease;
}

.grid-radio-group label:hover {
  background: var(--primary-soft);
  color: var(--text);
}

.grid-radio-group input {
  accent-color: var(--primary);
}

.grid-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.grid-btn-row .btn {
  flex: 1;
  min-width: 72px;
  justify-content: center;
}

.grid-btn-start {
  width: 100%;
  justify-content: center;
  padding: 10px 16px !important;
}

.grid-speed-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.grid-speed-row input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
}

.grid-stage {
  display: flex;
  flex-direction: column;
  gap: 0;
  min-width: 0;
  background: var(--bg-elevated);
}

.grid-stats-bar {
  margin-bottom: 0;
  border: none;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
}

.grid-canvas-wrap {
  flex: 1;
  background: var(--grid-bg, var(--bg));
  padding: 16px;
  min-height: 360px;
  position: relative;

  /* 画布配色 — JS 读取，随主题切换 */
  --grid-bg: var(--bg);
  --grid-cell: var(--bg-elevated);
  --grid-wall: #cbd5e1;
  --grid-start: var(--success);
  --grid-end: var(--warning);
  --grid-visited: var(--primary-soft);
  --grid-current: var(--primary);
  --grid-path: var(--accent);
  --grid-line: var(--border);
}

html[data-theme="dark"] .grid-canvas-wrap {
  --grid-wall: #334155;
  --grid-cell: #1e293b;
}

#grid-canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 328px;
  cursor: crosshair;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.grid-log {
  max-height: 88px;
  overflow-y: auto;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.grid-log-line {
  padding: 2px 0;
  line-height: 1.5;
}

.grid-log-line + .grid-log-line {
  border-top: 1px solid var(--border);
}

#grid-search-panel .tabs {
  margin-bottom: 0;
}

#grid-search-panel .code-panel {
  margin-bottom: 0;
}

#standard-vis-panel.hidden {
  display: none;
}

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

  .grid-controls {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}