/* ========================================
   GameCalc - Calculator Styles
   ======================================== */

/* Calculator Layout */
.calculator-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-lg);
}

.calculator-layout {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  min-height: 800px; /* Prevent CLS by reserving space */
}

/* Step Indicator */
.steps-container {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.step {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all 0.3s ease;
  opacity: 0.5;
}

.step.active {
  opacity: 1;
  background: var(--bg-tertiary);
  box-shadow: 0 0 20px rgba(189, 252, 154, 0.3);
}

.step-number {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--text-muted);
  border: 2px solid var(--border-color);
}

.step.active .step-number {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
}

.step-label {
  font-weight: 500;
  color: #e0e0e0; /* Improved contrast from #ccc */
}

.step.active .step-label {
  color: var(--accent-primary);
}

/* Left Panel - Selection */
.selection-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  height: fit-content;
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
}

.panel-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.search-box {
  margin-bottom: var(--spacing-md);
}

.search-box input {
  width: 100%;
}

/* Category Tabs */
.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.category-tab {
  padding: 8px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.category-tab:hover {
  border-color: var(--accent-primary);
  color: var(--text-primary);
}

.category-tab.active {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
  font-weight: 600;
}

/* Items Grid */
.items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
  gap: var(--spacing-sm);
  min-height: 400px; /* Prevent CLS */
  max-height: 500px;
  overflow-y: auto;
  padding: var(--spacing-sm);
}

.item-button {
  background: var(--bg-tertiary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
}

.item-button:hover {
  border-color: var(--accent-secondary);
  background: var(--hover-bg);
}

.item-button.active {
  border-color: var(--accent-primary);
  background: rgba(189, 252, 154, 0.1);
  box-shadow: 0 0 10px rgba(189, 252, 154, 0.3);
}

.item-image {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.item-name {
  font-size: 0.75rem;
  color: var(--text-secondary);
  word-break: break-word;
}

.item-button.active .item-name {
  color: var(--accent-primary);
  font-weight: 600;
}

/* Right Panel - Calculator */
.calculator-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.calculator-section {
  margin-bottom: var(--spacing-xl);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.section-header h2,
.section-header h3 {
  margin: 0;
  color: var(--accent-primary);
  font-size: 1.25rem;
}

/* Modifiers/Mutations Grid */
.modifiers-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  min-height: 120px; /* Prevent CLS for mutations grid */
}

.modifier-button {
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.85rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.modifier-button:hover {
  border-color: var(--accent-secondary);
  color: var(--text-primary);
}

.modifier-button.active {
  background: var(--accent-primary);
  color: var(--bg-primary);
  border-color: var(--accent-primary);
  font-weight: 600;
}

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

/* Input Group */
.input-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.input-field {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.input-field label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Result Display */
.result-box {
  background: linear-gradient(135deg, #2a3a2a, #1e2e1e);
  border: 2px solid var(--accent-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  margin: var(--spacing-lg) 0;
  box-shadow: 0 0 30px rgba(189, 252, 154, 0.2);
}

.result-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.result-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: var(--spacing-sm);
  text-shadow: 0 0 20px rgba(189, 252, 154, 0.5);
}

.result-details {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: var(--spacing-sm);
}

/* Formula Display */
.formula-display {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .calculator-layout {
    grid-template-columns: 300px 1fr;
  }
}

@media (max-width: 768px) {
  .calculator-layout {
    grid-template-columns: 1fr;
  }
  
  .selection-panel {
    position: static;
    max-height: none;
  }
  
  .steps-container {
    flex-direction: column;
    align-items: stretch;
  }
  
  .step {
    justify-content: flex-start;
  }
  
  .result-value {
    font-size: 2rem;
  }
  
  .items-grid {
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
  }
}

@media (max-width: 480px) {
  .input-group {
    grid-template-columns: 1fr;
  }
  
  .action-buttons {
    flex-direction: column;
  }
  
  .action-buttons .btn {
    width: 100%;
  }
}