/* ==========================================================================
   Demographics Page Styles
   ========================================================================== */

.demographics-page {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.demographics-page .page-header-breadcrumb {
  margin-bottom: var(--space-3);
}

.demographics-page .breadcrumb-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.demographics-page .breadcrumb-link:hover {
  color: var(--color-blue);
}

/* Overview Stats */
.demographics-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

@media (max-width: 1024px) {
  .demographics-overview {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .demographics-overview {
    grid-template-columns: 1fr;
  }
}

.overview-stat {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: var(--space-5);
  text-align: center;
}

.overview-stat-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.overview-stat-value {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

/* Top Performers Section */
.demographics-top-performers {
  margin-bottom: var(--space-8);
}

.demographics-top-performers .section-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
}

.top-performers-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

@media (max-width: 1024px) {
  .top-performers-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .top-performers-grid {
    grid-template-columns: 1fr;
  }
}

.top-performer-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: var(--space-5);
  border-left: 4px solid transparent;
  transition: all var(--transition-base);
}

.top-performer-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.top-performer-card-age { border-left-color: #AF52DE; }
.top-performer-card-gender { border-left-color: #007AFF; }
.top-performer-card-device { border-left-color: #FF9500; }
.top-performer-card-placement { border-left-color: #34C759; }

.top-performer-type {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
}

.top-performer-segment {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.top-performer-roas {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-green);
  margin-bottom: var(--space-2);
}

.top-performer-comparison {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.top-performer-lift {
  font-weight: var(--font-weight-semibold);
  color: var(--color-green);
  background: rgba(52, 199, 89, 0.1);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  margin-right: var(--space-2);
}

/* Breakdowns Section */
.demographics-breakdowns {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.breakdown-section {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: var(--space-6);
}

.breakdown-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
}

.breakdown-header-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.breakdown-icon-age {
  background: rgba(175, 82, 222, 0.1);
  color: #AF52DE;
}

.breakdown-icon-gender {
  background: rgba(0, 122, 255, 0.1);
  color: #007AFF;
}

.breakdown-icon-device {
  background: rgba(255, 149, 0, 0.1);
  color: #FF9500;
}

.breakdown-icon-placement {
  background: rgba(52, 199, 89, 0.1);
  color: #34C759;
}

.breakdown-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-1);
}

.breakdown-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.breakdown-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

@media (max-width: 1024px) {
  .breakdown-content {
    grid-template-columns: 1fr;
  }
}

.breakdown-chart {
  min-height: 200px;
  /* Add top padding to align histogram bars with table data rows (skip header row) */
  /* Header height: font-size-xs (12px) * 1.5 line-height + space-3 * 2 (24px) + 1px border = 43px */
  padding-top: 43px;
}

.breakdown-table {
  overflow-x: auto;
}

.breakdown-table table {
  width: 100%;
  border-collapse: collapse;
}

.breakdown-table th,
.breakdown-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.breakdown-table th {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.breakdown-table td {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.breakdown-table tbody tr:last-child td {
  border-bottom: none;
}

.breakdown-table tbody tr:hover {
  background: var(--color-background);
}

.roas-good {
  color: var(--color-green);
  font-weight: var(--font-weight-semibold);
}

.roas-poor {
  color: var(--color-orange);
  font-weight: var(--font-weight-semibold);
}

.comparison-positive {
  color: var(--color-green);
  font-weight: var(--font-weight-semibold);
}

.comparison-negative {
  color: var(--color-red);
  font-weight: var(--font-weight-semibold);
}

.comparison-neutral {
  color: var(--color-text-tertiary);
}

.breakdown-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-8);
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

/* Recommendations Section */
.demographics-recommendations {
  margin-bottom: var(--space-8);
}

.demographics-recommendations .section-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-5);
}

.recommendations-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.recommendation-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: var(--space-5);
  border-left: 4px solid transparent;
  transition: all var(--transition-base);
}

.recommendation-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-card-hover);
}

.recommendation-increase_budget {
  border-left-color: var(--color-green);
}

.recommendation-decrease_budget {
  border-left-color: var(--color-orange);
}

.recommendation-exclude {
  border-left-color: var(--color-red);
}

.recommendation-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.recommendation-increase_budget .recommendation-icon {
  background: rgba(52, 199, 89, 0.1);
  color: var(--color-green);
}

.recommendation-decrease_budget .recommendation-icon {
  background: rgba(255, 149, 0, 0.1);
  color: var(--color-orange);
}

.recommendation-exclude .recommendation-icon {
  background: rgba(255, 59, 48, 0.1);
  color: var(--color-red);
}

.recommendation-content {
  flex: 1;
}

.recommendation-category {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-1);
}

.recommendation-message {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: 1.5;
}

.recommendation-badge {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  flex-shrink: 0;
}

.recommendation-badge-increase_budget {
  background: rgba(52, 199, 89, 0.1);
  color: var(--color-green);
}

.recommendation-badge-decrease_budget {
  background: rgba(255, 149, 0, 0.1);
  color: var(--color-orange);
}

.recommendation-badge-exclude {
  background: rgba(255, 59, 48, 0.1);
  color: var(--color-red);
}

/* Empty State */
.demographics-empty-state {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: var(--space-12);
  text-align: center;
}

.empty-state-icon {
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-5);
  opacity: 0.5;
}

.demographics-empty-state h2 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.demographics-empty-state p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.demographics-empty-state .btn {
  margin-top: var(--space-5);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  background: var(--color-blue);
  color: white;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary:hover {
  background: var(--color-blue-hover, #0056b3);
  transform: translateY(-1px);
}