.sidebar {
    position: fixed;
    top: 0;
    left: -300px;
    width: 300px;
    height: 100vh;
    background-color: #11385d;
    color: white;
    transition: left 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.3);
}

.sidebar.active {
    left: 0;
    opacity: 0.9;
}

.sidebar .btn-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    color: white;
    font-size: 28px;
    cursor: pointer;
    padding: 0;
}

.sidebar-nav {
    margin-top: 60px;
    padding: 20px 0;
}

.sidebar-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin: 0;
}

.sidebar-nav a {
    display: block;
    padding: 15px 20px;
    color: white;
    text-decoration: none;
    transition: background-color 0.2s ease;
    border-left: 4px solid transparent;
}

.sidebar-nav a:hover {
    background-color: rgba(255, 255, 255, 0.5);
    border-left-color: #ccdeeb;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0);
    transition: background-color 0.3s ease;
    z-index: 999;
    display: none;
}

.sidebar-overlay.active {
    display: block;
    background-color: rgba(0, 0, 0, 0.5);
}