/* Interactive Mode Styles for Parse Tree Builder */
.interactive-controls {
  background: rgba(243, 244, 246, 0.7);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 12px;
  margin: 12px 0;
  padding: 12px;
}

.current-step-info {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 10px;
  font-size: 0.9rem;
}

.current-string {
  font-family: 'Inter', system-ui, sans-serif;
  font-weight: 600;
  margin-bottom: 5px;
  font-size: 1.1rem;
  color: #1e293b;
}

.direction-text {
  color: #3B82F6;
  font-weight: 500;
  font-size: 0.85rem;
  margin-bottom: 4px;
}

.instruction-text {
  color: #1e293b;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.rule-selection-container {
  margin-bottom: 10px;
}

.rule-buttons-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.rule-button {
  background: #6366F1;
  color: #fff;
  border: none;
  box-shadow: 0 0.125rem 0.5rem rgba(99, 102, 241, 0.15);
  transition: all 0.2s ease;
  font-weight: 500;
  font-size: 1rem;
  font-family: 'Inter', system-ui, sans-serif;
  padding: 0.75rem 1.2rem;
  min-width: 100px;
  min-height: 2.2rem;
  border-radius: 0.8rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.01em;
}

.rule-button:hover {
  filter: brightness(0.95);
  box-shadow: 0 0.25rem 1rem rgba(99, 102, 241, 0.20);
  transform: scale(1.05);
}

.rule-button:active {
  filter: brightness(0.90);
  transform: scale(0.95);
}

.rule-button:disabled {
  background: #9ca3af;
  cursor: not-allowed;
  transform: none;
  filter: none;
  box-shadow: none;
}

.button-row {
  display: flex;
  gap: 10px;
  align-items: center;
}

.completion-message {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 8px;
  padding: 12px;
  margin: 10px 0;
  color: #047857;
  font-weight: 500;
  text-align: center;
}

.error-message {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: 8px;
  padding: 10px;
  margin: 8px 0;
  color: #dc2626;
  font-weight: 500;
  font-size: 0.9rem;
}

.success-message {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 8px;
  padding: 10px;
  margin: 8px 0;
  color: #047857;
  font-weight: 500;
  font-size: 0.9rem;
}

/* Parse Tree Styles */
.parse-tree-container {
  background: rgba(243, 244, 246, 0.7);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 12px;
  padding: 20px;
  margin: 15px 0;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.parse-tree-title {
  font-size: 1.125rem;
  color: #1e293b;
  margin-bottom: 15px;
  font-weight: 600;
  text-align: center;
}

#parse_tree_svg {
  width: 100%;
  max-width: 800px;
  height: auto;
  min-height: 250px;
}

/* Tree node styles */
.tree-node {
  cursor: pointer;
  transition: all 0.3s ease;
}

.tree-node:hover {
  filter: drop-shadow(0px 2px 4px rgba(99, 102, 241, 0.3));
}

.tree-node.expandable {
  stroke: #EF4444;
  stroke-width: 2;
  animation: pulse-red 2s infinite;
}

.tree-node.expanded {
  stroke: #10B981;
  stroke-width: 2;
}

.tree-node.terminal {
  stroke: #6B7280;
  stroke-width: 1.5;
}

@keyframes pulse-red {
  0% {
    filter: drop-shadow(0px 2px 4px rgba(239, 68, 68, 0.2));
  }
  50% {
    filter: drop-shadow(0px 4px 8px rgba(239, 68, 68, 0.4));
  }
  100% {
    filter: drop-shadow(0px 2px 4px rgba(239, 68, 68, 0.2));
  }
}

/* Static Parse Tree Instruction */
.parse-tree-instruction {
  margin: 0 0 15px 0;
  padding: 8px 12px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 8px;
  font-size: 0.9rem;
  color: #4338ca;
  text-align: center;
  font-family: 'Inter', system-ui, sans-serif;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .rule-buttons-container {
    flex-direction: column;
  }
  
  .rule-button {
    width: 100%;
    min-width: auto;
  }
  
  .button-row {
    flex-direction: column;
    align-items: stretch;
  }
  
  .button-row .button {
    margin-bottom: 8px;
  }
}