/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #f5f6f8;
  --card-bg: #ffffff;
  --border: #e8e9eb;
  --text-primary: #1a1a2e;
  --text-secondary: #666b7a;
  --text-muted: #9ca0af;
  --accent: #2d6cdf;
  --accent-light: #eef3fd;
  --radius: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-hover: 0 4px 12px rgba(0,0,0,0.08);
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

html {
  font-size: 13px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* ===== Toolbar ===== */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  box-shadow: var(--shadow);
}

.toolbar-brand {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-right: 8px;
  white-space: nowrap;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 6px;
}

.toolbar-label {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
}

.toolbar input,
.toolbar select {
  font-size: 12px;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  color: var(--text-primary);
  outline: none;
  font-family: var(--font);
}

.toolbar input:focus,
.toolbar select:focus {
  border-color: var(--accent);
}

.toolbar input[type="date"] {
  width: 120px;
}

.toolbar select {
  min-width: 80px;
  cursor: pointer;
}

.btn {
  font-size: 12px;
  padding: 4px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card-bg);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font);
  transition: all 0.15s;
}

.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover {
  opacity: 0.9;
}

.btn-active {
  background: var(--accent-light);
  color: var(--accent);
  border-color: var(--accent);
}

/* ===== Loading ===== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.85);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 999;
  gap: 12px;
}

.loading-overlay.hidden {
  display: none;
}

.spinner {
  width: 28px;
  height: 28px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ===== Dashboard Grid ===== */
.dashboard {
  padding: 12px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  max-width: 1400px;
  margin: 0 auto;
}

/* ===== Chart Card ===== */
.chart-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.chart-card:hover {
  box-shadow: var(--shadow-hover);
}

.chart-header {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.chart-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.chart-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.chart-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  margin-left: 6px;
}

.chart-body {
  padding: 8px 12px 12px;
  min-height: 280px;
}

.chart-container {
  width: 100%;
  height: 320px;
}

.chart-container-sm {
  width: 100%;
  height: 240px;
}

/* ===== Stats Row ===== */
.stats-row {
  display: flex;
  gap: 12px;
  padding: 0 14px 10px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.stat-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ===== Two Column Layout ===== */
.two-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 16px;
}

.modal-overlay.hidden {
  display: none;
}

.modal-container {
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  width: 100%;
  max-width: 960px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.modal-header h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-body {
  flex: 1;
  overflow: auto;
  padding: 0;
}

.modal-footer {
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
  flex-shrink: 0;
}

/* ===== Drill Table ===== */
.table-wrap {
  overflow: auto;
  max-height: 60vh;
}

.drill-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.drill-table thead {
  position: sticky;
  top: 0;
  z-index: 10;
}

.drill-table th {
  background: #f8f9fa;
  color: var(--text-secondary);
  font-weight: 600;
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid #e8e9eb;
  white-space: nowrap;
}

.drill-table th:last-child {
  border-right: none;
}

.drill-table td {
  padding: 8px 12px;
  border-bottom: 1px solid #f0f0f0;
  border-right: 1px solid #e8e9eb;
  color: var(--text-primary);
  white-space: nowrap;
}

.drill-table td:last-child {
  border-right: none;
}

.drill-table tbody tr:hover {
  background: var(--accent-light);
}

.drill-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.drill-table td.text-muted {
  color: var(--text-muted);
}

/* ===== Responsive ===== */
@media (min-width: 768px) {
  .dashboard {
    grid-template-columns: repeat(2, 1fr);
    padding: 16px;
    gap: 16px;
  }
  
  .chart-card.full-width {
    grid-column: 1 / -1;
  }
  
  .two-col {
    grid-template-columns: 1fr 1fr;
    grid-column: 1 / -1;
  }
  
  .two-col .chart-card {
    margin-bottom: 0;
  }
  
  .toolbar {
    padding: 10px 24px;
  }
  
  html {
    font-size: 13px;
  }
  
  .modal-container {
    max-width: 960px;
  }
}

@media (min-width: 1200px) {
  .dashboard {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== Info Icon & Popover ===== */
.info-icon {
  font-size: 14px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.15s;
  line-height: 1;
  user-select: none;
  flex-shrink: 0;
}

.info-icon:hover {
  color: var(--accent);
}

/* ===== YoY Toggle ===== */
.yoy-toggle {
  font-size: 11px;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  user-select: none;
  color: var(--text-secondary);
  background: var(--card-bg);
  transition: all 0.15s;
  line-height: 1.5;
  flex-shrink: 0;
}

.yoy-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.yoy-toggle.active {
  background: var(--accent-light);
  color: var(--accent);
  border-color: var(--accent);
}

.yoy-toggle.hidden {
  display: none;
}

.info-popover {
  position: fixed;
  z-index: 900;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  max-width: 420px;
  width: calc(100vw - 32px);
  padding: 14px 16px;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--text-primary);
}

.info-popover.hidden {
  display: none;
}

.info-popover::after {
  content: '';
  position: absolute;
  top: -6px;
  right: 10px;
  width: 10px;
  height: 10px;
  background: var(--card-bg);
  border-left: 1px solid var(--border);
  border-top: 1px solid var(--border);
  transform: rotate(45deg);
}

.info-popover-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  display: block;
}

.info-popover p {
  margin: 4px 0;
  color: var(--text-secondary);
}

.info-popover table {
  width: 100%;
  border-collapse: collapse;
  margin: 6px 0;
  font-size: 11px;
}

.info-popover th,
.info-popover td {
  padding: 4px 8px;
  border: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.info-popover th {
  background: #f8f9fa;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.info-popover td {
  color: var(--text-primary);
}

.info-popover .note {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 10.5px;
}

@media (min-width: 768px) {
  .info-popover {
    max-width: 400px;
  }
}
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  color: var(--text-secondary);
  font-size: 12px;
  gap: 8px;
}

.error-state svg {
  width: 32px;
  height: 32px;
  opacity: 0.4;
}

/* ===== Empty State ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 12px;
}