/* ==========================================================================
   Interactive Payout vs Time Charts Styles (Cyber-Casino Theme)
   ========================================================================== */

.chart-section-card {
  background: var(--card-bg, #111827);
  border: 1px solid var(--card-border, #1f2937);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

.chart-section-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.7), rgba(56, 189, 248, 0.7), transparent);
}

/* Toolbar & Filter Header */
.chart-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  margin-bottom: 1.25rem;
}

.chart-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.chart-title-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(6, 95, 70, 0.3));
  border: 1px solid rgba(16, 185, 129, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.chart-main-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.3px;
  margin: 0;
}

.chart-subtitle {
  font-size: 0.78rem;
  color: var(--text-muted, #94a3b8);
  margin-top: 2px;
}

/* Granularity & Controls Toolbar */
.chart-toolbar-controls {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

/* Segmented Granularity Pill Bar */
.granularity-pill-group {
  display: inline-flex;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
}

.gran-btn {
  background: transparent;
  border: none;
  color: var(--text-muted, #94a3b8);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.38rem 0.75rem;
  border-radius: 7px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.gran-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.gran-btn.active {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.4);
}

#chartMetric_winners.gran-btn.active {
  background: linear-gradient(135deg, #0284c7, #0ea5e9);
  color: #fff;
  box-shadow: 0 2px 8px rgba(14, 165, 233, 0.45);
}

/* Limit & Navigation Controls */
.chart-sub-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.chart-select {
  background: #0f1523;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  padding: 0.38rem 0.65rem;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  font-family: inherit;
  transition: border-color 0.2s;
}

.chart-select:focus, .chart-select:hover {
  border-color: #38bdf8;
}

.chart-nav-btn {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #e2e8f0;
  border-radius: 8px;
  padding: 0.38rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.chart-nav-btn:hover:not(:disabled) {
  background: rgba(30, 41, 59, 0.9);
  border-color: rgba(56, 189, 248, 0.5);
  color: #38bdf8;
  transform: translateY(-1px);
}

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

.chart-reset-btn {
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(244, 63, 94, 0.35);
  color: #fda4af;
  border-radius: 8px;
  padding: 0.38rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.chart-reset-btn:hover {
  background: rgba(244, 63, 94, 0.25);
  border-color: rgba(244, 63, 94, 0.6);
  color: #fff;
  transform: translateY(-1px);
}

/* Stat Cards Row */
.chart-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.chart-stat-card {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  position: relative;
  overflow: hidden;
}

.chart-stat-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted, #94a3b8);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.chart-stat-val {
  font-size: 1.25rem;
  font-weight: 800;
  font-family: 'JetBrains Mono', monospace;
  color: #fff;
}

.chart-stat-val.emerald {
  color: #10b981;
}

.chart-stat-val.cyan {
  color: #38bdf8;
}

.chart-stat-val.gold {
  color: #fbbf24;
}

.chart-stat-val.purple {
  color: #c084fc;
}

/* Canvas Container */
.chart-wrapper {
  position: relative;
  width: 100%;
  height: 480px;
  background: rgba(10, 14, 23, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 0.5rem;
  box-sizing: border-box;
}

#multiSessionChartCard .chart-wrapper {
  height: 520px;
}

.chart-canvas {
  width: 100%;
  height: 100%;
}

/* Loading & Empty Overlays */
.chart-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 14, 23, 0.8);
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10;
  border-radius: 12px;
}

.chart-help-hint {
  font-size: 0.74rem;
  color: var(--text-muted, #94a3b8);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  justify-content: flex-end;
}

.chart-help-hint kbd {
  background: rgba(255, 255, 255, 0.1);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
}

/* Custom Scrollable Session Dropdown */
.session-dropdown-wrapper {
  position: relative;
  display: inline-block;
  width: 280px;
  max-width: 100%;
}

.session-dropdown-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  background: #0f1523;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  padding: 0.38rem 0.75rem;
  border-radius: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  font-family: inherit;
  transition: all 0.2s ease;
  box-sizing: border-box;
}

.session-dropdown-btn:hover,
.session-dropdown-btn:focus {
  border-color: #38bdf8;
  background: #131c2e;
}

.session-dropdown-btn span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: left;
}

.session-dropdown-btn .dropdown-chevron {
  transition: transform 0.2s ease;
  flex-shrink: 0;
  color: var(--text-muted, #94a3b8);
}

.session-dropdown-wrapper.open .dropdown-chevron {
  transform: rotate(180deg);
}

.session-dropdown-menu {
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  width: 340px;
  max-width: calc(100vw - 32px);
  background: #0d131f;
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 10px;
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.75);
  z-index: 200;
  overflow: hidden;
}

.session-dropdown-list {
  max-height: 250px;
  overflow-y: auto;
  padding: 5px;
}

.session-dropdown-list::-webkit-scrollbar {
  width: 6px;
}
.session-dropdown-list::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.6);
  border-radius: 3px;
}
.session-dropdown-list::-webkit-scrollbar-thumb {
  background: rgba(56, 189, 248, 0.35);
  border-radius: 3px;
}
.session-dropdown-list::-webkit-scrollbar-thumb:hover {
  background: rgba(56, 189, 248, 0.6);
}

.session-dropdown-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.45rem 0.65rem;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 0.76rem;
  color: #cbd5e1;
  user-select: none;
}

.session-dropdown-item:hover {
  background: rgba(56, 189, 248, 0.14);
  color: #fff;
}

.session-dropdown-item.active {
  background: rgba(16, 185, 129, 0.18);
  border-left: 3px solid #10b981;
  color: #fff;
  font-weight: 700;
}

.session-see-graph-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.72rem;
  font-weight: 700;
  color: #38bdf8;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.15s ease;
  padding: 2px 7px;
  border-radius: 4px;
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.22);
}

.session-see-graph-link:hover {
  color: #fff;
  background: rgba(56, 189, 248, 0.25);
  border-color: #38bdf8;
  text-decoration: none;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.4);
}