/* ── Sales Analytics Tab ── */

#tab-sales { padding: 16px; overflow-y: auto; }

/* ── Filter bar ── */
.sales-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  padding: 10px 12px;
  background: var(--sidebar-bg, #fff);
  border: 1px solid var(--border, #e9ecef);
  border-radius: var(--radius, 8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.sales-period-btns {
  display: flex;
  gap: 2px;
  margin-right: 8px;
}
.sales-period-btn {
  background: var(--card-bg, #f8f9fa);
  border: 1px solid var(--border, #e9ecef);
  padding: 4px 10px;
  font-size: 11px;
  font-family: var(--font-body, sans-serif);
  cursor: pointer;
  color: var(--text, #212529);
  transition: all 0.15s;
}
.sales-period-btn:first-child { border-radius: 4px 0 0 4px; }
.sales-period-btn:last-child { border-radius: 0 4px 4px 0; }
.sales-period-btn.active,
.sales-period-btn:hover {
  background: var(--accent, teal);
  color: #fff;
  border-color: var(--accent, teal);
}
.sales-filters input[type="date"],
.sales-filters select,
.sales-filters input[type="text"] {
  padding: 4px 8px;
  border: 1px solid var(--border, #e9ecef);
  border-radius: 4px;
  font-size: 11px;
  font-family: var(--font-body, sans-serif);
  background: var(--card-bg, #f8f9fa);
  color: var(--text, #212529);
}
.sales-filters input[type="date"] { width: 120px; }
.sales-filters input[type="text"] { width: 150px; }
.sales-filters select { max-width: 160px; }

/* ── KPI Cards ── */
.sales-kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
.sales-kpi-card {
  background: var(--sidebar-bg, #fff);
  border: 1px solid var(--border, #e9ecef);
  border-radius: var(--radius, 8px);
  padding: 12px 14px;
  text-align: center;
}
.sales-kpi-label {
  display: block;
  font-size: 10px;
  color: var(--text-muted, #6c757d);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 4px;
}
.sales-kpi-value {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--text, #212529);
  line-height: 1.2;
}
.sales-kpi-delta {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  margin-top: 4px;
  padding: 1px 6px;
  border-radius: 3px;
}
.sales-kpi-delta.up { background: rgba(39,174,96,0.1); color: #27ae60; }
.sales-kpi-delta.down { background: rgba(231,76,60,0.1); color: #e74c3c; }
.sales-kpi-delta.neutral { background: rgba(149,165,166,0.1); color: #95a5a6; }

/* ── Charts Grid ── */
.sales-charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.sales-chart-card {
  background: var(--sidebar-bg, #fff);
  border: 1px solid var(--border, #e9ecef);
  border-radius: var(--radius, 8px);
  padding: 16px;
}
.sales-chart-card h3 {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 12px;
  color: var(--text, #212529);
}
.sales-chart-card canvas {
  width: 100% !important;
  max-height: 280px;
}
.sales-chart-card-wide {
  grid-column: span 2;
}

/* ── Table sections ── */
.sales-table-section {
  background: var(--sidebar-bg, #fff);
  border: 1px solid var(--border, #e9ecef);
  border-radius: var(--radius, 8px);
  padding: 16px;
  margin-bottom: 16px;
}
.sales-table-section h3 {
  font-size: 13px;
  font-weight: 600;
  margin: 0 0 12px;
  color: var(--text, #212529);
}
.sales-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
}
.sales-table th {
  text-align: left;
  font-weight: 600;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--text-muted, #6c757d);
  padding: 6px 8px;
  border-bottom: 2px solid var(--border, #e9ecef);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}
.sales-table th:hover { color: var(--accent, teal); }
.sales-table td {
  padding: 7px 8px;
  border-bottom: 1px solid var(--border-light, #f1f3f5);
  vertical-align: middle;
}
.sales-table tbody tr:hover { background: var(--hover-bg, #f8f9fa); }
.sales-table tbody tr { cursor: pointer; }
.sales-table .right { text-align: right; }
.sales-table .mono { font-family: monospace; font-size: 11px; }
.sales-table .rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  font-size: 10px;
  font-weight: 700;
}
.sales-table .rank-1 { background: #ffd700; color: #333; }
.sales-table .rank-2 { background: #c0c0c0; color: #333; }
.sales-table .rank-3 { background: #cd7f32; color: #fff; }

/* ── Loading state ── */
.sales-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-muted, #6c757d);
  font-size: 13px;
}
.sales-loading .spinner-sm {
  border-color: var(--border, #e9ecef);
  border-top-color: var(--accent, teal);
  margin-right: 8px;
}

/* ── Empty state ── */
.sales-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted, #6c757d);
}
.sales-empty-icon { font-size: 40px; margin-bottom: 12px; }
.sales-empty h3 { font-size: 16px; margin: 0 0 6px; color: var(--text, #212529); }
.sales-empty p { font-size: 12px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sales-charts-grid { grid-template-columns: 1fr; }
  .sales-chart-card-wide { grid-column: span 1; }
  .sales-kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .sales-filters { flex-direction: column; align-items: stretch; }
  .sales-period-btns { flex-wrap: wrap; }
}
@media (max-width: 480px) {
  .sales-kpi-grid { grid-template-columns: 1fr; }
}