body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f6f7f9;
    margin-left: 60px;
    padding: 20px;
    color: #333;
}

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 60px;
    height: 100vh;
    background-color: #fff;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    overflow-x: hidden;
    transition: width 0.3s ease;
    z-index: 1000;
}

.sidebar:hover {
    width: 200px;
}

.sidebar-nav {
    list-style: none;
    padding: 20px 0;
}

.nav-item {
    position: relative;
    padding: 15px;
    display: flex;
    align-items: center;
    white-space: nowrap;
    transition: background-color 0.2s ease;
    min-height: 24px;
    cursor: pointer;
}

.nav-item:hover {
    background-color: #f0f2f5;
}

.nav-icon {
    min-width: 24px;
    color: #495057;
    font-size: 18px;
    margin-right: 20px;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
}

.nav-text {
    color: #343a40;
    font-size: 15px;
    font-weight: 500;
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.3s ease 0.1s;
}

.sidebar:hover .nav-text {
    opacity: 1;
}

.nav-divider {
    height: 1px;
    background-color: #e9ecef;
    margin: 10px 15px;
}