:root {
        --sidebar-width: 280px;
        --dark-bg: #1e1e2d;
        --accent-color: #009ef7;
    }

    body {
        background-color: #f5f8fa;
        min-height: 100vh;
        overflow-x: hidden;
    }

    /* Estructura Wrapper */
    .wrapper {
        display: flex;
        align-items: stretch;
    }

    /* Sidebar */
    #sidebar {
        min-width: var(--sidebar-width);
        max-width: var(--sidebar-width);
        background: var(--dark-bg);
        color: #fff;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        min-height: 100vh;
        z-index: 999;
    }

    #sidebar.active {
        margin-left: calc(var(--sidebar-width) * -1);
    }

    .sidebar-header {
        padding: 25px;
        background: #151521;
        text-align: center;
    }

    /* Estilo de los links y colapsables internos */
    .nav-link {
        color: #a2a3b7;
        padding: 12px 25px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        transition: 0.2s;
    }

    .nav-link:hover,
    .nav-link[aria-expanded="true"] {
        color: #fff;
        background: #2b2b40;
    }

    .sub-menu {
        background: #1b1b28;
        list-style: none;
        padding: 0;
    }

    .sub-menu a {
        padding: 10px 25px 10px 55px;
        display: block;
        color: #7e8299;
        text-decoration: none;
        font-size: 0.9rem;
    }

    .sub-menu a:hover {
        color: var(--accent-color);
    }

    /* Área de Contenido */
    #content {
        width: 100%;
        padding: 0;
    }

    .content-padding {
        padding: 30px;
    }

    .top-nav {
        background: #fff;
        padding: 15px 30px;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    }

    /* Rotación de flechas en el menú */
    .nav-link .bi-chevron-down {
        transition: transform 0.3s;
        font-size: 0.8rem;
    }

    .nav-link[aria-expanded="true"] .bi-chevron-down {
        transform: rotate(180deg);
    }