/* Chart Styles */

.chart-container {
  position: relative;
  width: 100%;
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--card-bg, white);
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.chart-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--heading-color);
  text-align: center;
}

.chart-wrapper {
  position: relative;
  height: 300px;
}

.chart-wrapper canvas {
  max-height: 100%;
}

/* Stats Dashboard */
.stats-dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.stat-card {
  background: var(--card-bg, white);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.stat-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  opacity: 0.8;
}

.stat-icon.publications {
  color: #2196F3;
}

.stat-icon.projects {
  color: #4CAF50;
}

.stat-icon.collaborations {
  color: #FF9800;
}

.stat-icon.citations {
  color: #9C27B0;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--heading-color);
  margin-bottom: 0.5rem;
  line-height: 1;
}

.stat-label {
  font-size: 0.9375rem;
  color: var(--text-muted-color, #666);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-change {
  font-size: 0.875rem;
  margin-top: 0.5rem;
  font-weight: 500;
}

.stat-change.positive {
  color: #4CAF50;
}

.stat-change.negative {
  color: #F44336;
}

.stat-change i {
  margin-right: 0.25rem;
}

/* Chart Grid Layout */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

/* Animated Counter */
@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.stat-number.animated {
  animation: countUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
  .stats-dashboard {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .stat-card {
    padding: 1rem;
  }

  .stat-number {
    font-size: 2rem;
  }

  .stat-icon {
    font-size: 2rem;
  }

  .charts-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .chart-wrapper {
    height: 250px;
  }
}

@media (max-width: 480px) {
  .stats-dashboard {
    grid-template-columns: 1fr;
  }
}

/* Loading State */
.chart-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 300px;
  color: var(--text-muted-color, #666);
}

.chart-loading i {
  font-size: 2rem;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Chart Legends */
.chart-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}

.chart-legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.chart-legend-color {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}