body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f4f4f4;
}

.wrapper {
    display: flex;
    width: 100%;
    align-items: stretch;
}

#sidebar {
    min-width: 250px;
    max-width: 250px;
    background: #2c3e50;
    color: #fff;
    transition: all 0.3s;
    min-height: 100vh;
}

#sidebar.active {
    margin-left: -250px;
}

#sidebar .sidebar-header {
    padding: 20px;
    background: #34495e;
}

#sidebar .sidebar-header h3 {
    margin: 0;
    font-size: 1.5rem;
    color: #fff;
}

#sidebar ul.components {
    padding: 20px 0;
    border-bottom: 1px solid #34495e;
}

#sidebar ul p {
    color: #fff;
    padding: 10px;
}

#sidebar ul li a {
    padding: 10px;
    font-size: 1.1em;
    display: block;
    color: #bdc3c7;
    text-decoration: none;
    transition: all 0.3s;
}

#sidebar ul li a:hover {
    color: #fff;
    background: #34495e;
}

#sidebar ul li.active > a,
a[aria-expanded="true"] {
    color: #fff;
    background: #34495e;
}

a[data-bs-toggle="collapse"] {
    position: relative;
}

.dropdown-toggle::after {
    display: block;
    position: absolute;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
}

ul ul a {
    font-size: 0.9em !important;
    padding-left: 30px !important;
    background: #34495e;
}

#content {
    width: 100%;
    padding: 20px;
    min-height: 100vh;
    transition: all 0.3s;
}

.navbar {
    background: #fff !important;
    border-bottom: 1px solid #dee2e6;
}

.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.card-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 10px 10px 0 0 !important;
    padding: 15px 20px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5568d3 0%, #653a8f 100%);
}

@media (max-width: 768px) {
    #sidebar {
        margin-left: -250px;
    }
    #sidebar.active {
        margin-left: 0;
    }
    #content {
        width: 100%;
    }
}

.chart-container {
    position: relative;
    height: 400px;
    margin-top: 20px;
}

.filter-container {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.loading {
    text-align: center;
    padding: 40px;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
}