header.navbar {
    background-color: #2f82d3 !important; /* 更改 header 背景顏色 */
    color: #ecf0f1; /* 更改 header 文字顏色 */
}
body {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
}
.wrapper {
    display: flex;
    flex-grow: 1;
}
.sidebar {
    background-color: #e9edf6 !important; /* 更改 sidebar 背景顏色 */
    min-width: 65px;
    max-width: 65px;
    transition: all 0.3s;
    overflow: hidden;
}
.sidebar.expanded {
    min-width: 150px;
    max-width: 250px;
}
.sidebar ul {
    padding: 0;
}
.sidebar li {
    list-style-type: none;
}
.sidebar a {
    display: flex;
    align-items: center;
    padding: 10px;
    text-decoration: none;
    color: #000;
}
.sidebar a .icon {
    font-size: 1.5rem;
    margin-right: 10px;
}
.sidebar.collapsed .text {
    display: none;
}
.main-content {
    flex-grow: 1;
    padding: 20px;
}
.footer {
    text-align: center;
    padding: 10px;
    background: #2f82d3 !important;
}