.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;
    }
}