/* ==========================================================================
   A-Share Quantitative Asset Dashboard - Design System & Stylesheet
   ========================================================================== */

:root {
  --bg-primary: #0b0f19;
  --bg-card: #111827;
  --bg-card-hover: #1f2937;
  --bg-input: #1a2234;
  --bg-table-stripe: rgba(255, 255, 255, 0.015);
  --bg-table-hover: rgba(99, 102, 241, 0.08);

  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  --accent-blue: #3b82f6;
  --accent-purple: #a855f7;
  --accent-emerald: #10b981;

  --border-glass: rgba(255, 255, 255, 0.08);
  --border-active: rgba(99, 102, 241, 0.5);

  --text-primary: #f3f4f6;
  --text-secondary: #d1d5db;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;

  --status-green: #10b981;
  --status-green-bg: rgba(16, 185, 129, 0.15);
  --status-amber: #f59e0b;
  --status-amber-bg: rgba(245, 158, 11, 0.15);
  --status-red: #ef4444;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.25);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* ==========================================================================
   Header Bar
   ========================================================================== */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 16px 24px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid var(--border-glass);
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-titles h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.node-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.status-dot.online {
  background-color: var(--status-green);
  box-shadow: 0 0 8px var(--status-green);
}

.date-picker-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.custom-select {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
  transition: var(--transition-fast);
}

.custom-select:hover, .custom-select:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.btn-icon {
  background: var(--bg-input);
  color: var(--text-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-icon:hover {
  color: var(--text-primary);
  border-color: var(--accent-blue);
  background: var(--bg-card-hover);
  transform: rotate(30deg);
}

/* ==========================================================================
   Metrics Grid Cards
   ========================================================================== */

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: var(--transition-fast);
}

.metric-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-active);
  box-shadow: var(--shadow-glow);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-icon {
  font-size: 1.4rem;
}

.card-badge {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.card-badge.green {
  background: var(--status-green-bg);
  color: var(--status-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.card-badge.amber {
  background: var(--status-amber-bg);
  color: var(--status-amber);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.metric-value {
  font-family: 'Outfit', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.metric-sub {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* ==========================================================================
   Main Content Panel
   ========================================================================== */

.main-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 16px;
}

.panel-tabs {
  display: flex;
  gap: 8px;
}

.tab-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  color: #ffffff;
  background: var(--accent-gradient);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.toolbar-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 10px;
  color: var(--text-muted);
}

.search-box input {
  background: var(--bg-input);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 7px 32px 7px 34px;
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
  width: 240px;
  transition: var(--transition-fast);
}

.search-box input:focus {
  border-color: var(--accent-blue);
  width: 280px;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.btn-clear {
  position: absolute;
  right: 8px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
}

.btn-clear:hover {
  color: var(--text-primary);
}

/* Alert Banner */
.alert-banner {
  background: var(--status-amber-bg);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--status-amber);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ==========================================================================
   Data Table
   ========================================================================== */

.table-container {
  position: relative;
  overflow-x: auto;
  min-height: 380px;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.2);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.data-table th {
  background: #141d2e;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-glass);
  white-space: nowrap;
  user-select: none;
}

.data-table th.sortable {
  cursor: pointer;
  transition: var(--transition-fast);
}

.data-table th.sortable:hover {
  color: var(--accent-blue);
  background: #1a263c;
}

.data-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-glass);
  color: var(--text-secondary);
  white-space: nowrap;
  transition: var(--transition-fast);
}

.data-table tbody tr {
  transition: var(--transition-fast);
}

.data-table tbody tr:nth-child(even) {
  background: var(--bg-table-stripe);
}

.data-table tbody tr:hover {
  background: var(--bg-table-hover);
  color: var(--text-primary);
}

.data-table td.ticker-cell {
  font-family: 'Outfit', monospace;
  font-weight: 600;
  color: var(--accent-blue);
}

.data-table td.numeric-cell {
  text-align: right;
  font-family: 'Outfit', monospace;
}

/* Overlay & Empty States */
.table-loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  z-index: 10;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(99, 102, 241, 0.2);
  border-top-color: var(--accent-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-muted);
  gap: 8px;
}

.empty-icon {
  font-size: 2.5rem;
}

/* ==========================================================================
   Pagination Footer
   ========================================================================== */

.pagination-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-page {
  background: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-page:hover:not(:disabled) {
  border-color: var(--accent-blue);
  background: var(--bg-card-hover);
}

.btn-page:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-indicator {
  font-weight: 500;
  color: var(--text-secondary);
}