/* Main Layout Grid */
#main-content {
  display: grid;
  grid-template-columns: 300px 1fr 350px;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* Control Panel */
#control-panel {
  background: white;
  padding: 1.5rem;
  overflow-y: auto;
  border-right: 1px solid var(--border-color);
}

.control-section {
  display: flex;
  flex-direction: column;
}

.control-section h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
  font-size: 1.1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--bg-color);
}

.control-group {
  margin-bottom: 1.5rem;
}

.control-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.95rem;
}

.control-group input[type="text"],
.control-group input[type="number"],
.control-group select,
.control-group textarea {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.3s;
}

.control-group input:focus,
.control-group select:focus,
.control-group textarea:focus {
  outline: none;
  border-color: var(--secondary-color);
}

.range-inputs, .skip-inputs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.range-inputs input,
.skip-inputs input {
  flex: 1;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: normal;
  cursor: pointer;
  margin-top: 0.5rem;
}

.checkbox-label input[type="checkbox"] {
  width: auto;
  cursor: pointer;
}

.action-buttons {
  display: flex;
  gap: 0.5rem;
}

.action-buttons .primary-btn {
  flex: 2;
}

.action-buttons .secondary-btn {
  flex: 1;
}

details.control-group {
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 0.5rem;
}

details summary {
  cursor: pointer;
  font-weight: 500;
  padding: 0.5rem;
  user-select: none;
}

details[open] summary {
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1rem;
}

.advanced-options {
  padding: 0.5rem;
}

.advanced-options label {
  display: block;
  margin-bottom: 0.75rem;
}

/* Display Area */
#display-area {
  background: white;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

.display-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.view-tabs {
  display: flex;
  background: var(--bg-color);
  border-bottom: 2px solid var(--border-color);
  flex-shrink: 0;
}

.tab-btn {
  padding: 1rem 2rem;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s;
  border-bottom: 3px solid transparent;
  font-weight: 500;
}

.tab-btn:hover {
  background: rgba(52, 152, 219, 0.1);
}

.tab-btn.active {
  background: white;
  border-bottom: 3px solid var(--secondary-color);
}

.display-content {
  display: none;
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 2rem;
  min-height: 0;
}

.display-content.active {
  display: flex;
  flex-direction: column;
}

/* Results Panel */
#results-panel {
  background: white;
  padding: 1.5rem;
  overflow-y: auto;
  border-left: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

#results-panel h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#result-count {
  font-size: 0.9rem;
  color: var(--secondary-color);
}

.results-controls {
  margin-bottom: 1rem;
}

.results-controls select {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

.results-list {
  flex: 1;
  overflow-y: auto;
  margin-bottom: 1rem;
}

.results-actions {
  display: flex;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.results-actions button {
  flex: 1;
  padding: 0.6rem;
  font-size: 0.9rem;
}

/* Responsive Layout */
@media (max-width: 1400px) {
  #main-content {
    grid-template-columns: 280px 1fr 320px;
  }
}

@media (max-width: 1200px) {
  #main-content {
    grid-template-columns: 250px 1fr 300px;
  }
  
  .tab-btn {
    padding: 0.8rem 1.5rem;
    font-size: 0.95rem;
  }
}

@media (max-width: 992px) {
  #main-content {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }
  
  #control-panel,
  #results-panel {
    max-height: 250px;
    border: none;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
  }
  
  #display-area {
    order: -1;
  }
}

@media (max-width: 768px) {
  #control-panel,
  #results-panel {
    padding: 1rem;
  }
  
  .display-content {
    padding: 1rem;
  }
  
  .tab-btn {
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
  }
  
  .action-buttons {
    flex-direction: column;
  }
  
  .action-buttons .primary-btn,
  .action-buttons .secondary-btn {
    width: 100%;
  }
}