.main-nav {
  margin-top: 15px;
}

.main-nav ul {
  display: flex;
  list-style: none;
  justify-content: center;
  gap: 25px;
}

.nav-link {
  text-decoration: none;
  color: #555;
  font-weight: 500;
  padding: 8px 15px;
  border-radius: 5px;
  transition: all 0.3s;
}

.nav-link:hover {
  color: #3498db;
  background-color: rgba(52, 152, 219, 0.1);
}

.nav-link.active {
  color: #3498db;
  border-bottom: 2px solid #3498db;
}

.dashboard-content {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.stats-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
}

.stat-card {
  flex: 1 1 200px;
  background-color: white;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s;
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-card h3 {
  font-size: 1rem;
  color: #777;
  margin-bottom: 10px;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: #3498db;
}

.charts-container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.chart-card {
  flex: 1 1 400px;
  background-color: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.chart-card h3 {
  font-size: 1.2rem;
  color: #555;
  margin-bottom: 15px;
  text-align: center;
}

.recent-workouts {
  background-color: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.recent-workouts h2 {
  font-size: 1.5rem;
  color: #3a3a3a;
  margin-bottom: 15px;
}

.workout-table {
  width: 100%;
  border-collapse: collapse;
}

.workout-table th,
.workout-table td {
  padding: 12px 15px;
  text-align: left;
  border-bottom: 1px solid #eee;
}

.workout-table th {
  background-color: #f9f9f9;
  color: #555;
  font-weight: 500;
}

.workout-table tr:hover {
  background-color: #f5f5f5;
}

@media (max-width: 768px) {
  .stats-summary {
    flex-direction: column;
  }

  .charts-container {
    flex-direction: column;
  }

  .workout-table {
    font-size: 0.9rem;
  }
}