:root {
  --bg-primary: #0e1116;
  --bg-secondary: #161b22;
  --bg-card: #1c2128;
  --border: #30363d;
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-tertiary: #6e7681;
  --green: #2ea043;
  --green-bg: rgba(46, 160, 67, 0.1);
  --red: #da3633;
  --red-bg: rgba(218, 54, 51, 0.1);
  --blue: #388bfd;
  --yellow: #d29922;
  --purple: #a371f7;
}

[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-card: #ffffff;
  --border: #d0d7de;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --text-tertiary: #8c959f;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

/* Header */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.header h1 {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
}

.header-stats {
  display: flex;
  gap: 24px;
  font-size: 13px;
}

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

.header-stat-label {
  color: var(--text-secondary);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.header-stat-value {
  font-weight: 600;
  font-size: 15px;
}

.update-info {
  color: var(--text-tertiary);
  font-size: 12px;
  margin-left: auto;
}

.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.2s;
}

.theme-toggle:hover {
  background: var(--bg-primary);
}

/* Tabs */
.tabs {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 8px;
  padding: 0 24px;
}

.tab {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 12px 16px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  position: relative;
}

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

.tab.active {
  color: var(--text-primary);
  border-bottom-color: var(--blue);
}

.tab .badge {
  background: var(--red);
  color: white;
  padding: 2px 6px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  margin-left: 6px;
}

/* Tab Content */
.tab-content {
  display: none;
  padding: 24px;
}

.tab-content.active {
  display: block;
}

/* Controls */
.controls {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.search-input {
  flex: 1;
  min-width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
}

.search-input:focus {
  outline: none;
  border-color: var(--blue);
}

.view-toggle {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}

.view-btn {
  background: var(--bg-card);
  border: none;
  color: var(--text-secondary);
  padding: 8px 16px;
  cursor: pointer;
  font-size: 13px;
  border-right: 1px solid var(--border);
  transition: all 0.2s;
}

.view-btn:last-child {
  border-right: none;
}

.view-btn:hover {
  background: var(--bg-secondary);
}

.view-btn.active {
  background: var(--blue);
  color: white;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
}

.action-btn {
  background: var(--blue);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s;
}

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

.action-btn.danger {
  background: var(--red);
}

.action-btn.success {
  background: var(--green);
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
}

.stat-change {
  font-size: 13px;
  margin-top: 4px;
}

.green { color: var(--green); }
.red { color: var(--red); }
.yellow { color: var(--yellow); }
.blue { color: var(--blue); }

/* Charts */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.chart-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
}

.chart-box h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

canvas {
  width: 100% !important;
  height: 200px !important;
}

/* Table */
.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead {
  background: var(--bg-secondary);
  position: sticky;
  top: 0;
  z-index: 10;
}

th {
  text-align: left;
  padding: 12px 16px;
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
}

th:hover {
  background: var(--bg-primary);
}

td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

tr:hover td {
  background: var(--bg-secondary);
}

.pair-cell {
  font-weight: 600;
  color: var(--text-primary);
}

.status-badge {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.status-long {
  background: var(--green-bg);
  color: var(--green);
}

.status-short {
  background: var(--red-bg);
  color: var(--red);
}

.status-none {
  background: var(--bg-secondary);
  color: var(--text-tertiary);
}

/* Alert Box */
.alert {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--blue);
  padding: 12px 16px;
  border-radius: 6px;
  margin-bottom: 16px;
  font-size: 13px;
}

.alert.warning {
  border-left-color: var(--yellow);
  background: rgba(210, 153, 34, 0.1);
}

.alert.danger {
  border-left-color: var(--red);
  background: var(--red-bg);
}

.alert.success {
  border-left-color: var(--green);
  background: var(--green-bg);
}

/* Loading */
.loading {
  text-align: center;
  padding: 48px;
  color: var(--text-secondary);
}

.spinner {
  border: 3px solid var(--border);
  border-top: 3px solid var(--blue);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto 16px;
}

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

/* Empty State */
.empty-state {
  text-align: center;
  padding: 64px 24px;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.5;
}

/* Responsive */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .controls {
    flex-direction: column;
    align-items: stretch;
  }

  .stats-grid, .charts-grid {
    grid-template-columns: 1fr;
  }

  table {
    font-size: 12px;
  }

  th, td {
    padding: 8px 12px;
  }
}
/* --- Premium Overrides --- */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  background-image: radial-gradient(circle at 50% 0%, rgba(56, 139, 253, 0.05), transparent 70%);
  background-attachment: fixed;
}

/* Header Glassmorphism */
.header {
  background: rgba(22, 27, 34, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
[data-theme="light"] .header {
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

/* Cards Glassmorphism */
.stats-grid .stat-card {
  background: rgba(28, 33, 40, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s, box-shadow 0.2s;
}
.stats-grid .stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 12px rgba(0, 0, 0, 0.3);
}
[data-theme="light"] .stats-grid .stat-card {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

/* Table Enhancements */
.table-container {
  background: rgba(28, 33, 40, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}
[data-theme="light"] .table-container {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.08);
}
th {
  background: rgba(22, 27, 34, 0.8);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.05em;
}
[data-theme="light"] th {
  background: rgba(246, 248, 250, 0.9);
}
td {
  font-variant-numeric: tabular-nums;
}
tbody tr {
  transition: background 0.15s;
}
tbody tr:hover {
  background: rgba(255, 255, 255, 0.03);
}
[data-theme="light"] tbody tr:hover {
  background: rgba(0, 0, 0, 0.02);
}

/* Glow Effects */
.text-green { 
  color: #2ea043;
  text-shadow: 0 0 8px rgba(46, 160, 67, 0.4);
}
.text-red { 
  color: #ff6b6b;
  text-shadow: 0 0 8px rgba(255, 107, 107, 0.4);
}
[data-theme="light"] .text-green, [data-theme="light"] .text-red {
  text-shadow: none;
}

/* Controls / Buttons */
.controls-bar {
  background: rgba(28, 33, 40, 0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 12px 20px;
  margin-bottom: 24px;
}
[data-theme="light"] .controls-bar {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(0, 0, 0, 0.08);
}
.btn {
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  border-radius: 6px;
  transition: all 0.2s;
}
.btn:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}