/* ========================================
   PLOT COMPARISON OVERLAY
   ======================================== */
.comparison-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  display: none;
  backdrop-filter: blur(4px);
}

.comparison-overlay.open {
  display: flex;
  align-items: center;
  justify-content: center;
}

.comparison-container {
  width: 95%;
  height: 90%;
  background: var(--bg-color);
  border-radius: 12px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.comparison-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.comparison-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-color);
  margin: 0;
}

.comparison-close {
  background: var(--button-bg);
  color: white;
  border: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 1.2rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.comparison-close:hover {
  background: var(--button-hover);
  transform: scale(1.1);
}

.comparison-content {
  flex: 1;
  display: flex;
  gap: 1rem;
  overflow: hidden;
}

.comparison-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: hidden;
}

.comparison-panel-header {
  background: var(--tree-bg);
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.comparison-panel-title {
  font-weight: 600;
  color: var(--text-color);
  font-size: 1rem;
}

.comparison-replace-btn {
  background: var(--success-color);
  color: white;
  border: none;
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.comparison-replace-btn:hover {
  background: var(--success-hover);
}

.comparison-panel-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  overflow: auto;
}

.comparison-plot-container {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.comparison-plot {
  max-width: 100%;
  max-height: 100%;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.2s ease;
}

.comparison-plot:hover {
  transform: scale(1.02);
}

.comparison-placeholder {
  width: 100%;
  height: 300px;
  border: 2px dashed var(--border-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--breadcrumb-color);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.comparison-placeholder:hover {
  border-color: var(--button-bg);
  color: var(--button-bg);
}

.comparison-plot-info {
  position: absolute;
  bottom: 0.5rem;
  left: 0.5rem;
  right: 0.5rem;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 0.5rem;
  border-radius: 4px;
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.comparison-plot-container:hover .comparison-plot-info {
  opacity: 1;
}