/* High-Density Modern Dark Trading Platform Stylesheet */
:root {
  --bg-main: #0b0f19;
  --bg-card: #121826;
  --bg-card-hover: #1a2234;
  --border-color: #232d42;
  --border-bright: #334155;
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --accent-green: #10b981;
  --accent-green-glow: rgba(16, 185, 129, 0.2);
  --accent-red: #ef4444;
  --accent-red-glow: rgba(239, 68, 68, 0.2);
  --accent-blue: #3b82f6;
  --accent-yellow: #f59e0b;
  --accent-purple: #8b5cf6;
  --highlight-oi: #059669;
  --highlight-vol: #2563eb;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 12px;
  line-height: 1.4;
  overflow-x: hidden;
}

/* App Header Nav */
.navbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 8px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 15px;
  color: #fff;
}

.brand-badge {
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  letter-spacing: 0.5px;
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 12px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover, .nav-link.active {
  background: var(--bg-card-hover);
  color: #fff;
  border: 1px solid var(--border-bright);
}

.spot-badge-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(15, 23, 42, 0.6);
  padding: 4px 12px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  font-size: 11px;
}

/* Buttons */
.btn {
  padding: 6px 14px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 12px;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.btn-buy {
  background-color: #10b981;
  color: #fff;
}
.btn-buy:hover {
  background-color: #059669;
  box-shadow: 0 0 10px var(--accent-green-glow);
}

.btn-sell {
  background-color: #ef4444;
  color: #fff;
}
.btn-sell:hover {
  background-color: #dc2626;
  box-shadow: 0 0 10px var(--accent-red-glow);
}

.btn-warning {
  background: linear-gradient(135deg, #f97316, #ea580c);
  color: #fff;
}
.btn-warning:hover {
  opacity: 0.9;
}

.btn-outline-danger {
  background: transparent;
  border: 1px solid var(--accent-red);
  color: var(--accent-red);
}
.btn-outline-danger:hover {
  background: var(--accent-red);
  color: #fff;
}

.btn-secondary {
  background: var(--bg-card-hover);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}
.btn-secondary:hover {
  border-color: var(--border-bright);
}

/* Header Controls & Grid */
.control-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 12px 16px;
  margin: 12px 16px;
}

.control-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-label {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.form-select, .form-input {
  background: #090d16;
  border: 1px solid var(--border-color);
  color: #fff;
  padding: 5px 8px;
  border-radius: 4px;
  font-size: 12px;
  outline: none;
  width: 100%;
}

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

/* Quote Header Bar */
.quotes-bar {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 16px;
  align-items: center;
  background: #0f172a;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 14px 20px;
  margin: 0 16px 12px 16px;
}

.quote-side {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.quote-title {
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.price-range-bar {
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  position: relative;
  margin-top: 4px;
}

.price-range-fill {
  position: absolute;
  height: 100%;
  background: linear-gradient(90deg, var(--accent-red), var(--accent-green));
  border-radius: 2px;
}

.center-spot-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid var(--border-bright);
  padding: 8px 16px;
  border-radius: 6px;
}

.spot-price-large {
  font-size: 20px;
  font-weight: 800;
}

.text-green { color: var(--accent-green) !important; }
.text-red { color: var(--accent-red) !important; }
.text-muted { color: var(--text-muted) !important; }

/* Tabs & Datatables */
.tab-container {
  margin: 0 16px 16px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  overflow: visible;
}

.tab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #0f172a;
  border-bottom: 1px solid var(--border-color);
  padding: 0 12px;
  position: relative;
  z-index: 20;
}

.nav-tabs {
  display: flex;
  list-style: none;
}

.nav-tab-item {
  padding: 10px 16px;
  color: var(--text-muted);
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.nav-tab-item:hover, .nav-tab-item.active {
  color: #fff;
  border-bottom-color: var(--accent-red);
  background: rgba(255, 255, 255, 0.02);
}

.mtm-indicator {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  background: rgba(15, 23, 42, 0.9);
  padding: 4px 14px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  white-space: nowrap;
}

/* High Density Table & Scrollbar */
.data-table-wrapper {
  overflow-x: auto;
  overflow-y: auto;
  max-height: 540px;
}

.data-table-wrapper::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
.data-table-wrapper::-webkit-scrollbar-track {
  background: #0f172a;
}
.data-table-wrapper::-webkit-scrollbar-thumb {
  background: #334155;
  border-radius: 3px;
}
.data-table-wrapper::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

/* Sleek Table Badges for BUY / SELL & Statuses */
.badge-buy {
  background: rgba(16, 185, 129, 0.15) !important;
  color: #34d399 !important;
  border: 1px solid rgba(16, 185, 129, 0.4) !important;
  padding: 3px 10px !important;
  border-radius: 4px !important;
  font-weight: 800 !important;
  font-size: 10px !important;
  display: inline-block;
  letter-spacing: 0.5px;
}

.badge-sell {
  background: rgba(239, 68, 68, 0.15) !important;
  color: #f87171 !important;
  border: 1px solid rgba(239, 68, 68, 0.4) !important;
  padding: 3px 10px !important;
  border-radius: 4px !important;
  font-weight: 800 !important;
  font-size: 10px !important;
  display: inline-block;
  letter-spacing: 0.5px;
}

.badge-complete {
  background: rgba(59, 130, 246, 0.15) !important;
  color: #60a5fa !important;
  border: 1px solid rgba(59, 130, 246, 0.4) !important;
  padding: 3px 8px !important;
  border-radius: 4px !important;
  font-weight: 700 !important;
  font-size: 10px !important;
  display: inline-block;
}

.badge-open {
  background: rgba(245, 158, 11, 0.15) !important;
  color: #fbbf24 !important;
  border: 1px solid rgba(245, 158, 11, 0.4) !important;
  padding: 3px 8px !important;
  border-radius: 4px !important;
  font-weight: 700 !important;
  font-size: 10px !important;
  display: inline-block;
}

.badge-closed {
  background: rgba(148, 163, 184, 0.12) !important;
  color: #cbd5e1 !important;
  border: 1px solid rgba(148, 163, 184, 0.25) !important;
  padding: 3px 8px !important;
  border-radius: 4px !important;
  font-weight: 600 !important;
  font-size: 10px !important;
  display: inline-block;
}

.trade-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  text-align: left;
}

.trade-table th {
  background: #0d121f;
  color: var(--text-muted);
  padding: 8px 12px;
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 10;
  white-space: nowrap;
}

.trade-table td {
  padding: 8px 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  white-space: nowrap;
  vertical-align: middle;
}

.trade-table tr:hover {
  background: var(--bg-card-hover);
}

/* Option Chain Highlights */
.bg-oi-highlight {
  background: rgba(16, 185, 129, 0.25) !important;
  color: #34d399 !important;
  font-weight: 700;
  border: 1px solid #10b981 !important;
  border-radius: 4px;
  padding: 2px 4px;
}

.bg-vol-highlight {
  background: rgba(59, 130, 246, 0.25) !important;
  color: #60a5fa !important;
  font-weight: 700;
  border: 1px solid #3b82f6 !important;
  border-radius: 4px;
  padding: 2px 4px;
}

.strike-center-cell {
  background: #1e293b !important;
  color: #fbbf24 !important;
  font-weight: 800;
  text-align: center;
  font-size: 12px;
}

.interpretation-badge {
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
}
.badge-sb { background: #7f1d1d; color: #fca5a5; }
.badge-lb { background: #064e3b; color: #6ee7b7; }
.badge-sc { background: #1e3a8a; color: #93c5fd; }
.badge-lu { background: #78350f; color: #fde68a; }