/* Dashboard — Enterprise Analytics */

.dashboard-main {
  padding: calc(var(--nav-height) + 32px) 24px 80px;
  max-width: 1200px;
  margin: 0 auto;
}

.dashboard-header {
  text-align: center;
  margin-bottom: 48px;
}

.dashboard-header .section-label {
  margin-bottom: 8px;
}

.dashboard-header .section-title {
  margin-bottom: 12px;
}

.dashboard-sub {
  color: var(--gray);
  font-size: 17px;
  line-height: 1.5;
}

/* Period Selector */
.period-selector {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 40px;
}

.period-btn {
  padding: 8px 20px;
  border-radius: 8px;
  border: 1px solid rgba(0,0,0,0.12);
  background: var(--white);
  color: var(--black);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.4s var(--ease-spring), transform 0.4s var(--ease-spring),
              color 0.4s var(--ease-spring), border-color 0.4s var(--ease-spring);
}

.period-btn:hover {
  background: var(--light-bg);
  transform: scale(1.03);
}

.period-btn:active {
  transform: scale(0.96);
  transition-duration: 0.1s;
}

.period-btn.active {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

/* Stats Grid */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--black);
  border-radius: 16px;
  padding: 24px;
  text-align: center;
  color: var(--white);
  opacity: 0;
  transform: scale(0.98) translateY(8px);
  animation: fadeInCard 0.8s var(--ease-out-quart) forwards;
  will-change: opacity, transform;
}

.stat-card:nth-child(1) { animation-delay: 0s; }
.stat-card:nth-child(2) { animation-delay: 0.08s; }
.stat-card:nth-child(3) { animation-delay: 0.16s; }
.stat-card:nth-child(4) { animation-delay: 0.24s; }

@keyframes fadeInCard {
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Charts Grid */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.chart-card {
  background: var(--light-bg);
  border-radius: 16px;
  padding: 24px;
  opacity: 0;
  transform: scale(0.98) translateY(8px);
  animation: fadeInCard 0.8s var(--ease-out-quart) forwards;
  animation-delay: 0.3s;
  will-change: opacity, transform;
}

.chart-card.full-width {
  grid-column: 1 / -1;
}

.chart-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--black);
}

/* Budget Gauge */
.gauge-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 16px 0;
}

.gauge-container svg {
  max-width: 200px;
}

.gauge-text {
  font-size: 28px;
  font-weight: 700;
  fill: var(--black);
}

.gauge-sub {
  font-size: 12px;
  fill: var(--gray);
}

.gauge-track {
  stroke: rgba(0,0,0,0.08);
}

.gauge-fill {
  transition: stroke-dashoffset 1s var(--ease-out-quart);
  will-change: stroke-dashoffset;
}

/* Canvas Chart */
.chart-canvas-wrap {
  position: relative;
  width: 100%;
  height: 200px;
}

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

/* Heatmap */
.heatmap-grid {
  display: grid;
  grid-template-columns: 40px repeat(24, 1fr);
  gap: 2px;
  font-size: 10px;
  contain: layout style;
}

.heatmap-label {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 6px;
  color: var(--gray);
  font-weight: 500;
}

.heatmap-hour-labels {
  display: contents;
}

.heatmap-hour-label {
  text-align: center;
  color: var(--gray);
  font-size: 9px;
  padding-bottom: 4px;
}

.heatmap-cell {
  aspect-ratio: 1;
  border-radius: 3px;
  background: rgba(0,0,0,0.04);
  transition: transform 0.4s var(--ease-spring), opacity 0.4s var(--ease-spring);
  min-height: 14px;
  will-change: transform;
}

.heatmap-cell:hover {
  transform: scale(1.3);
  z-index: 1;
  opacity: 0.85;
}

/* Heatmap intensity levels — using opacity for GPU acceleration */
.heatmap-cell.level-1 { background: rgba(0,0,0,0.10); }
.heatmap-cell.level-2 { background: rgba(0,0,0,0.20); }
.heatmap-cell.level-3 { background: rgba(0,0,0,0.35); border: 1px solid rgba(0,0,0,0.05); }
.heatmap-cell.level-4 { background: rgba(0,0,0,0.55); border: 1px solid rgba(0,0,0,0.08); }
.heatmap-cell.level-5 { background: rgba(0,0,0,0.80); border: 1px solid rgba(0,0,0,0.12); }

/* Latency Bars */
.latency-bars {
  display: flex;
  align-items: flex-end;
  gap: 24px;
  height: 160px;
  padding: 0 24px;
}

.latency-bar-group {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  height: 100%;
  justify-content: flex-end;
}

.latency-bar {
  width: 48px;
  border-radius: 8px 8px 0 0;
  background: var(--black);
  transition: height 0.8s var(--ease-out-quart);
  min-height: 4px;
  will-change: height;
}

.latency-value {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--black);
}

.latency-label {
  font-size: 12px;
  color: var(--gray);
  margin-top: 8px;
  font-weight: 500;
}

/* Alerts */
.alerts-section {
  margin-bottom: 32px;
}

.alert-item {
  background: var(--light-bg);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  opacity: 0;
  animation: fadeInCard 0.4s var(--ease-out-quart) forwards;
}

.alert-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.alert-dot.warning { background: #f59e0b; }
.alert-dot.danger { background: #ef4444; }
.alert-dot.info { background: var(--gray); }

.alert-time {
  color: var(--gray);
  font-size: 12px;
  margin-left: auto;
  flex-shrink: 0;
}

/* Toast */
.toast-container {
  position: fixed;
  top: calc(var(--nav-height) + 16px);
  right: 16px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--black);
  color: var(--white);
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  opacity: 0;
  transform: translateX(40px);
  animation: toastIn 0.4s var(--ease-out-quart) forwards;
  max-width: 360px;
  pointer-events: auto;
  will-change: opacity, transform;
}

.toast.removing {
  animation: toastOut 0.3s var(--ease-in-out-quart) forwards;
}

@keyframes toastIn {
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  to { opacity: 0; transform: translateX(40px); }
}

/* Connection Status */
.connection-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--gray);
  margin-top: 8px;
}

.connection-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ef4444;
  transition: background 0.4s var(--ease-spring);
}

.connection-dot.connected {
  background: #22c55e;
}

/* Donut Chart Legend */
.donut-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
  justify-content: center;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--gray);
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .stat-card,
  .chart-card,
  .alert-item,
  .toast {
    animation: none;
    opacity: 1;
    transform: none;
  }
  .heatmap-cell {
    transition: none;
  }
  .gauge-fill {
    transition: none;
  }
  .latency-bar {
    transition: none;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
  .latency-bars {
    gap: 16px;
    padding: 0;
  }
  .latency-bar {
    width: 36px;
  }
}

@media (max-width: 480px) {
  .dashboard-main {
    padding-left: 16px;
    padding-right: 16px;
  }
  .stat-value {
    font-size: 1.5rem;
  }
  .heatmap-grid {
    font-size: 8px;
  }
}