Widgets de Dashboard con Gráficos y Visualización de Datos

.dashboard-container {
  padding: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.widget {
  background: rgba(255, 255, 255, 0.95);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.widget:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.widget-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid #f0f0f0;
}

.widget-header h3 {
  margin: 0;
  color: #333;
  font-size: 1.2em;
  font-weight: 600;
}

.widget-controls {
  display: flex;
  gap: 10px;
}

.refresh-btn {
  background: linear-gradient(45deg, #667eea, #764ba2);
  color: white;
  border: none;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  cursor: pointer;
  font-size: 14px;
  transition: transform 0.3s ease;
}

.refresh-btn:hover {
  transform: rotate(180deg);
}

.chart-container {
  position: relative;
  height: 250px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 15px;
}

.metric-item {
  text-align: center;
  padding: 15px;
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  border-radius: 10px;
  transition: transform 0.3s ease;
}

.metric-item:hover {
  transform: scale(1.05);
}

.metric-value {
  font-size: 1.8em;
  font-weight: bold;
  color: #333;
  margin-bottom: 5px;
}

.metric-label {
  font-size: 0.9em;
  color: #666;
  margin-bottom: 5px;
}

.metric-change {
  font-size: 0.8em;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 12px;
}

.metric-change.positive {
  background: #d4edda;
  color: #155724;
}

.metric-change.negative {
  background: #f8d7da;
  color: #721c24;
}

@media (max-width: 768px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  
  .widget {
    padding: 15px;
  }
  
  .chart-container {
    height: 200px;
  }
}