:root {
    --header-height: 60px;
    --sidebar-width: 250px;
    --main-color: #000000;
    --secondary-color: #343a40;
    --content-background: #f8f9fa;
    --white: #fff;
}

body {
    margin: 0;
    height: 100vh;
    overflow: hidden;
}

.header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background-color: var(--main-color);
}

.header-user {
    cursor: pointer;
    height: 30px;
}

.header-user:hover {
    opacity: 0.8;
}

.header-search {
    border-radius: 20px;
}

.sidebar {
    width: var(--sidebar-width);
    height: calc(100vh - var(--header-height));
    position: fixed;
    top: var(--header-height);
    left: 0;
    background-color: var(--secondary-color);
    color: #fff;
    padding: 10px;
    font-size: 14px;
    overflow-y: auto;
    transform: translateX(0);
    transition: transform 0.3s;
}

.sidebar.collapsed {
    transform: translateX(0);
}

.menu-item {
    padding: 10px 20px;
    cursor: pointer;
    color: var(--white);
    display: block;
    text-decoration: none;
}

.menu-item:hover {
    background-color: #495057;
}

.sub-menu-item {
    padding-left: 40px;
}

.main-content {
    margin-left: var(--sidebar-width);
    background-color: var(--content-background);
    padding: 30px 50px;
    height: calc(100vh - 80px);
    overflow-y: auto;
    transition: margin-left 0.3s;
}

.main-content.full {
    margin-left: 0;
}

.hamburger {
    display: none;
    cursor: pointer;
}

@media (max-width: 768px) {
    .sidebar {
        width: 60%;
        height: 100vh;
        top: 0px;
        transform: translateX(-100%);
        z-index: 1000;
    }

    .hamburger {
        display: block;
        color: var(--white);
        position: relative;
        top: -4px;
        font-size: 24px;
    }

    .main-content {
        margin-left: 0;
        padding: 20px;
    }

    .header-search {
        display: none;
    }
}

.close-sidebar {
    display: none;
    text-align: right;
    padding: 15px;
    font-size: 16px;
}

@media (max-width: 768px) {
    .close-sidebar {
        display: block;
    }
}

.dropdown-menu {
    right: 0;
    left: auto;
}

.dropdown-menu a, .dropdown-menu a:hover, .dropdown-menu a:focus {
    color: var(--main-color);
}

.dropdown-menu .dropdown-item {
    padding: 10px 20px;
}

.dropdown-menu .dropdown-item:hover, .dropdown-menu .dropdown-item:focus {
    background-color: var(--main-color);
    color: var(--white);
}

.btn-primary {
    background-color: var(--main-color) !important;
    color: var(--white) !important;
    border-radius: 20px;
    min-width: 120px;
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    background-color: var(--secondary-color) !important;
    color: var(--white) !important;
}

.btn-outline-primary {
    color: var(--main-color) !important;
    border-color: var(--main-color) !important;
    background-color: var(--white) !important;
    border-radius: 20px;
    min-width: 120px;
}

.btn-outline-primary:hover, .btn-outline-primary:focus, .btn-outline-primary:active {
    color: var(--white) !important;
    background-color: var(--main-color) !important;
}

.desktop-mode {
    display: block;
}

.mobile-mode {
    display: none;
}

@media (max-width: 768px) {
    .desktop-mode {
        display: none;
    }

    .mobile-mode {
        display: block;
    }
}