html, body {
    height: 100%;
}

body {
    background-color: #f4f6f9;
}

.topbar {
    background-color: #1e2a38;
    height: 56px;
    z-index: 1050;
}

.sidebar {
    position: fixed;
    top: 56px;
    left: 0;
    bottom: 0;
    width: 220px;
    background-color: #1e2a38;
    overflow-x: hidden;
    overflow-y: auto;
    z-index: 1040;
    transition: width 0.2s ease, transform 0.2s ease;
}

.sidebar .nav-link {
    color: #c9d1d9;
    padding: 0.7rem 1rem;
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.sidebar .nav-link i {
    font-size: 1.15rem;
    width: 28px;
    flex-shrink: 0;
}

.sidebar .nav-link:hover {
    background-color: #2c3b4d;
    color: #fff;
}

.sidebar .submenu .nav-link {
    padding-left: 2.6rem;
    font-size: 0.9rem;
}

.sidebar .nav-link[data-bs-toggle="collapse"] {
    justify-content: space-between;
}

.sidebar .nav-label {
    margin-left: 0.5rem;
}

.main-content {
    margin-left: 220px;
    padding-top: 56px;
    min-height: 100vh;
    transition: margin-left 0.2s ease;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.4);
    z-index: 1035;
}

/* Desktop: full sidebar by default, collapses to icon-only via toggle */
@media (min-width: 992px) {
    .sidebar.collapsed {
        width: 64px;
    }

    .sidebar.collapsed .nav-label {
        display: none;
    }

    body.sidebar-is-collapsed .main-content {
        margin-left: 64px;
    }
}

/* Tablet: icon-only by default, toggle expands temporarily */
@media (min-width: 768px) and (max-width: 991.98px) {
    .sidebar {
        width: 64px;
    }

    .sidebar .nav-label {
        display: none;
    }

    .main-content {
        margin-left: 64px;
    }

    .sidebar.expanded {
        width: 220px;
    }

    .sidebar.expanded .nav-label {
        display: inline;
    }
}

/* Mobile: off-canvas drawer */
@media (max-width: 767.98px) {
    .sidebar {
        width: 240px;
        transform: translateX(-100%);
    }

    .sidebar .nav-label {
        display: inline;
    }

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

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

    .sidebar-overlay.show {
        display: block;
    }
}

.content-card {
    background-color: #fff;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}