/* Basic Conjoint Analysis Tool - ONLY tool-specific styles
   Everything else comes from shared/css/main.css */

/* ===== Workflow Stepper (4-step variant) ===== */
.workflow-stepper {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2rem auto;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
    max-width: 700px;
}

.workflow-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.workflow-step__indicator {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #e0e0e0;
    color: #757575;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.workflow-step.active .workflow-step__indicator {
    background: #2a7de1;
    color: white;
    box-shadow: 0 0 0 4px rgba(42, 125, 225, 0.2);
}

.workflow-step.completed .workflow-step__indicator {
    background: #28a745;
    color: white;
}

.workflow-step__checkmark { display: none; }
.workflow-step.completed .workflow-step__checkmark { display: block; }
.workflow-step.completed .workflow-step__number { display: none; }

.workflow-step__label {
    font-size: 0.85rem;
    font-weight: 500;
    color: #757575;
    text-align: center;
    max-width: 100px;
}

.workflow-step.active .workflow-step__label {
    color: #2a7de1;
    font-weight: 600;
}

.workflow-step.completed .workflow-step__label { color: #28a745; }

.workflow-step__connector {
    width: 60px;
    height: 3px;
    background: #e0e0e0;
    margin: 0 0.5rem;
    margin-bottom: 2rem;
}

.workflow-step.completed + .workflow-step__connector {
    background: #28a745;
}

/* ===== Attribute Confirmation Panel (unique to basic tool) ===== */
.attribute-config-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
}

.attribute-confirm-item {
    border: 1px solid var(--app-border, #d6dfea);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    background: var(--app-card-bg, #fff);
}

.attribute-confirm-item h4 {
    margin: 0 0 0.5rem;
    color: var(--app-accent, #2a7de1);
    font-size: 1rem;
}

.attribute-levels-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.attribute-level-tag {
    display: inline-block;
    background: #e8f0fe;
    color: #1a56db;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

.attribute-level-tag.reference {
    background: #fef3c7;
    color: #92400e;
    border: 1px dashed #f59e0b;
}

/* ===== Product Simulation Cards ===== */
.products-config-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.product-config-card {
    border: 2px solid var(--app-border, #ddd);
    border-radius: 8px;
    padding: 1.5rem;
    background: var(--app-card-bg, #f9f9f9);
}

.product-config-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--app-border, #ddd);
}

.prod-name {
    font-size: 1.1rem;
    font-weight: 600;
    border: 1px solid var(--app-border, #ddd);
    padding: 0.5rem;
    border-radius: 4px;
    flex: 1;
    margin-right: 1rem;
}

.remove-prod {
    background: var(--app-danger, #e74c3c);
    color: white;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.remove-prod:hover { background: #c0392b; }

.product-config-body {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.product-config-body label {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.prod-attr {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--app-border, #ddd);
    border-radius: 4px;
}

.simulation-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* ===== Optimization Attribute List ===== */
.optimize-attribute-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

/* Checkbox chip-card style */
.optimize-attribute-list label,
.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    white-space: nowrap;
    padding: 0.45rem 0.85rem;
    border: 1.5px solid var(--app-border, #d6dfea);
    border-radius: 6px;
    background: #f8f9fa;
    font-size: 0.9rem;
    transition: all 0.15s ease;
    -webkit-user-select: none;
    user-select: none;
}

.optimize-attribute-list label:hover,
.checkbox-label:hover {
    border-color: var(--app-accent, #2a7de1);
    background: #eef4fc;
}

.optimize-attribute-list label:has(input:checked),
.checkbox-label:has(input:checked) {
    border-color: var(--app-accent, #2a7de1);
    background: #e8f0fe;
    color: #1a56db;
    font-weight: 500;
}

.optimize-attr-checkbox {
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: var(--app-accent, #2a7de1);
}

/* ===== Loading Overlay ===== */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-overlay[aria-hidden="false"] { display: flex; }

.loading-modal {
    background: white;
    border-radius: 12px;
    padding: 3rem;
    max-width: 500px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 6px solid #f3f3f3;
    border-top: 6px solid #3498db;
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-modal h3 { margin: 0 0 1rem; color: #2c3e50; font-size: 1.5rem; }
.loading-modal p { margin: 0.5rem 0; color: #555; }
.loading-detail { font-size: 0.9rem; color: #777; margin-top: 1rem !important; }

.loading-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
    font-size: 0.9rem;
    color: #666;
}

.loading-stats strong { color: #3498db; font-size: 1.1rem; }

/* ===== Result Card BEM (shared with full conjoint tool) ===== */
.result-card {
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 2rem;
  background: white;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  /* Override main.css flex layout — conjoint cards stack vertically */
  display: block;
  padding: 0;
  align-items: initial;
  gap: 0;
}

.result-card__header {
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, #2a7de1 0%, #1e5bb8 100%);
  color: white;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-radius: 6px 6px 0 0;
}

.result-card__header-icon { font-size: 1.5rem; }

.result-card__header-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.result-card__body { padding: 1.5rem; }

.result-card__actions {
  padding: 1rem 1.5rem;
  border-top: 1px solid #e0e0e0;
  background: #f8f9fa;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ===== Help Popovers ===== */
.help-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: help;
  margin-left: 0.35rem;
  position: relative;
  vertical-align: middle;
}

.help-popover {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #2c3e50;
  color: white;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  line-height: 1.5;
  width: 280px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.help-icon:hover .help-popover {
  opacity: 1;
  pointer-events: auto;
}

.help-popover::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: #2c3e50;
}

.help-term {
  font-weight: 600;
  color: #5dade2;
  margin-bottom: 0.25rem;
}

/* ===== Table Conditional Formatting ===== */
.utility-positive { color: #28a745; font-weight: 600; }
.utility-negative { color: #d64747; font-weight: 600; }
.utility-best { font-weight: 700; background: #e8f5e9; }
.attribute-separator td { border-top: 2px solid var(--app-accent, #2a7de1); }
.best-share td { background: #e8f5e9; }
.rank-gold td { background: #fef3c7; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .workflow-stepper {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .workflow-step__connector { display: none; }

    .professor-mode-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}