/* ============================================================================
   Athena Library Management System — Dashboard Styles
   ============================================================================
   Stat cards, KPI grid, chart containers, and activity timeline.
   ============================================================================ */

/* --------------------------------------------------------------------------
   Stat Cards (big number + label)
   -------------------------------------------------------------------------- */
.stat-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
  padding: var(--space-xl);
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.stat-card-icon.icon-blue {
  background: var(--color-info-light);
  color: var(--color-secondary);
}

.stat-card-icon.icon-green {
  background: var(--color-success-light);
  color: var(--color-success);
}

.stat-card-icon.icon-orange {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.stat-card-icon.icon-red {
  background: var(--color-error-light);
  color: var(--color-error);
}

.stat-card-icon.icon-purple {
  background: #e9d8fd;
  color: #6b46c1;
}

.stat-card-icon.icon-teal {
  background: #b2f5ea;
  color: #319795;
}

.stat-card-body {
  flex: 1;
  min-width: 0;
}

.stat-card-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-gray-800);
  line-height: 1.1;
  margin-bottom: var(--space-xs);
}

.stat-card-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.stat-card-trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  margin-top: var(--space-sm);
  padding: 2px 8px;
  border-radius: 10px;
}

.stat-card-trend.trend-up {
  background: var(--color-success-light);
  color: #276749;
}

.stat-card-trend.trend-down {
  background: var(--color-error-light);
  color: #9b2c2c;
}

.stat-card-trend.trend-flat {
  background: var(--color-gray-100);
  color: var(--color-gray-600);
}

/* Clickable stat card */
.stat-card.clickable {
  cursor: pointer;
}

.stat-card.clickable:hover {
  border-color: var(--color-secondary);
}

/* Mini stat card (compact) */
.stat-card-mini {
  background: var(--color-white);
  border-radius: var(--border-radius);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-lg);
  text-align: center;
}

.stat-card-mini .stat-card-value {
  font-size: var(--font-size-2xl);
}

.stat-card-mini .stat-card-label {
  font-size: var(--font-size-xs);
}


/* --------------------------------------------------------------------------
   KPI Grid
   -------------------------------------------------------------------------- */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

/* Smaller KPI bars (horizontal list) */
.kpi-bar {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  overflow-x: auto;
}

.kpi-bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  min-width: 80px;
  text-align: center;
}

.kpi-bar-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-gray-800);
}

.kpi-bar-label {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  font-weight: 500;
}

.kpi-bar-divider {
  width: 1px;
  height: 40px;
  background: var(--color-gray-200);
  flex-shrink: 0;
}


/* --------------------------------------------------------------------------
   Chart Containers
   -------------------------------------------------------------------------- */
.chart-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.chart-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-gray-100);
}

.chart-card-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-gray-800);
  margin-bottom: 0;
}

.chart-card-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.chart-card-body {
  padding: var(--space-xl);
  position: relative;
  min-height: 280px;
}

.chart-card-body canvas {
  width: 100% !important;
  max-height: 320px;
}

/* Chart period selector */
.chart-period {
  display: inline-flex;
  background: var(--color-gray-100);
  border-radius: var(--border-radius);
  padding: 2px;
}

.chart-period-btn {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
  font-weight: 500;
  background: none;
  border: none;
  border-radius: 4px;
  color: var(--color-gray-500);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.chart-period-btn.active {
  background: var(--color-white);
  color: var(--color-gray-800);
  box-shadow: var(--shadow-sm);
}

.chart-period-btn:hover:not(.active) {
  color: var(--color-gray-700);
}

/* Two-column chart layout */
.chart-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

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

/* Chart legend override for custom legend below chart */
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg);
  justify-content: center;
  padding: var(--space-md) var(--space-xl) var(--space-lg);
}

.chart-legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.chart-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}


/* --------------------------------------------------------------------------
   Dashboard Grid Layout
   -------------------------------------------------------------------------- */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.dashboard-grid-equal {
  grid-template-columns: 1fr 1fr;
}


/* --------------------------------------------------------------------------
   Activity Timeline
   -------------------------------------------------------------------------- */
.timeline {
  padding: 0;
  margin: 0;
  list-style: none;
}

.timeline-item {
  display: flex;
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
  position: relative;
}

/* Vertical line */
.timeline-item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 32px;
  bottom: 0;
  width: 2px;
  background: var(--color-gray-200);
}

.timeline-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.timeline-dot.dot-blue {
  background: var(--color-info-light);
  color: var(--color-secondary);
}

.timeline-dot.dot-green {
  background: var(--color-success-light);
  color: var(--color-success);
}

.timeline-dot.dot-orange {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.timeline-dot.dot-red {
  background: var(--color-error-light);
  color: var(--color-error);
}

.timeline-dot.dot-gray {
  background: var(--color-gray-100);
  color: var(--color-gray-500);
}

.timeline-content {
  flex: 1;
  min-width: 0;
  padding-top: var(--space-xs);
}

.timeline-text {
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  line-height: 1.5;
}

.timeline-text strong {
  color: var(--color-gray-800);
}

.timeline-time {
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
  margin-top: var(--space-xs);
}

/* Timeline card wrapper */
.timeline-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
}

.timeline-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-gray-100);
}

.timeline-card-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-gray-800);
  margin-bottom: 0;
}

.timeline-card-body {
  padding: var(--space-xl);
  max-height: 460px;
  overflow-y: auto;
}

.timeline-card-footer {
  padding: var(--space-md) var(--space-xl);
  border-top: 1px solid var(--color-gray-100);
  text-align: center;
}

.timeline-card-footer a {
  font-size: var(--font-size-sm);
  font-weight: 500;
}


/* --------------------------------------------------------------------------
   Quick Actions (Dashboard)
   -------------------------------------------------------------------------- */
.quick-actions {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-lg);
}

.quick-action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  color: var(--color-gray-700);
}

.quick-action-btn:hover {
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
  color: var(--color-secondary);
}

.quick-action-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius);
  background: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  transition: background var(--transition-fast);
}

.quick-action-btn:hover .quick-action-icon {
  background: var(--color-info-light);
}

.quick-action-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-align: center;
}


/* --------------------------------------------------------------------------
   Top Lists (e.g. Most Borrowed Books, Top Readers)
   -------------------------------------------------------------------------- */
.top-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.top-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-gray-100);
}

.top-list-item:last-child {
  border-bottom: none;
}

.top-list-rank {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-gray-500);
  flex-shrink: 0;
}

.top-list-item:nth-child(1) .top-list-rank {
  background: #fefcbf;
  color: #b7791f;
}

.top-list-item:nth-child(2) .top-list-rank {
  background: var(--color-gray-200);
  color: var(--color-gray-600);
}

.top-list-item:nth-child(3) .top-list-rank {
  background: #feebc8;
  color: #c05621;
}

.top-list-info {
  flex: 1;
  min-width: 0;
}

.top-list-title {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-gray-700);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-list-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
}

.top-list-value {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-gray-800);
  flex-shrink: 0;
}


/* --------------------------------------------------------------------------
   Progress Bar / Gauge
   -------------------------------------------------------------------------- */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-gray-200);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width var(--transition-slow);
  background: var(--color-secondary);
}

.progress-bar-fill.fill-green  { background: var(--color-success); }
.progress-bar-fill.fill-orange { background: var(--color-accent); }
.progress-bar-fill.fill-red    { background: var(--color-error); }

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-bottom: var(--space-xs);
}


/* --------------------------------------------------------------------------
   Summary Row (e.g. "12 overdue | 3 damaged | 45 active")
   -------------------------------------------------------------------------- */
.summary-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xl);
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-gray-50);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-xl);
}

.summary-item {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.summary-item-value {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-gray-800);
}

.summary-item-label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}


/* --------------------------------------------------------------------------
   Dashboard Welcome Banner
   -------------------------------------------------------------------------- */
.welcome-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl) var(--space-3xl);
  color: var(--color-white);
  margin-bottom: var(--space-2xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.welcome-text h2 {
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-sm);
}

.welcome-text p {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--font-size-base);
  margin-bottom: 0;
}

.welcome-date {
  text-align: right;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
}

.welcome-date .date-big {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.1;
}


/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .chart-row {
    grid-template-columns: 1fr;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .kpi-grid {
    grid-template-columns: 1fr;
  }

  .stat-card {
    padding: var(--space-lg);
  }

  .stat-card-value {
    font-size: var(--font-size-2xl);
  }

  .welcome-banner {
    flex-direction: column;
    text-align: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
  }

  .welcome-date {
    text-align: center;
  }

  .quick-actions {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .kpi-bar-divider {
    width: 100%;
    height: 1px;
  }
}