:root {
    --sidebar-width: 250px;
    --sidebar-collapsed-width: 76px;
    --header-height: 56px;
    --primary-color: #0d6efd;
    --dark-bg: #212529;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bs-body-bg);
}

/* ───────────── Layout ───────────── */
#wrapper {
    min-height: 100vh;
}
#page-content-wrapper {
    min-width: 0;
    margin-left: var(--sidebar-collapsed-width);
    padding-top: var(--header-height);
    transition: margin-left 0.2s ease;
}
@media (min-width: 992px) {
    .sidebar:hover ~ #page-content-wrapper {
        margin-left: var(--sidebar-width);
    }
    .sidebar:hover ~ #page-content-wrapper .app-topbar {
        left: var(--sidebar-width);
    }
}
.sidebar-toggled #page-content-wrapper {
    margin-left: 0;
}

/* ───────────── Sidebar ───────────── */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-collapsed-width);
    height: 100vh;
    z-index: 1030;
    display: flex;
    flex-direction: column;
    background-color: var(--dark-bg);
    transition: width 0.2s ease, margin-left 0.3s ease, transform 0.3s ease;
}
.sidebar:hover {
    width: var(--sidebar-width);
    box-shadow: 0 0 1.5rem rgba(0, 0, 0, 0.25);
    z-index: 1040;
}
.sidebar-toggled .sidebar {
    margin-left: calc(-1 * var(--sidebar-width));
}

.sidebar-brand {
    height: var(--header-height);
    flex-shrink: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}
.sidebar-brand .sidebar-brand-text {
    font-weight: 600;
}

.sidebar-nav {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.5rem;
}
.sidebar-nav::-webkit-scrollbar {
    width: 6px;
}
.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}
.sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar .nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.75);
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: background-color 0.15s ease, color 0.15s ease;
}
.sidebar .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
}
.sidebar .nav-link.active {
    background-color: var(--primary-color);
    color: #fff;
}
.sidebar .nav-link i {
    width: 1.25rem;
    text-align: center;
    flex-shrink: 0;
}
.nav-label {
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-sub .nav-link {
    padding-left: 2.25rem;
    font-size: 0.875rem;
}
.nav-sub {
    padding-bottom: 0.25rem;
}

.nav-group-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    border: 0;
    background: transparent;
    color: rgba(255, 255, 255, 0.75);
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.9rem;
    text-align: left;
    transition: background-color 0.15s ease, color 0.15s ease;
}
.nav-group-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
}
.nav-group-toggle i {
    width: 1.25rem;
    text-align: center;
    flex-shrink: 0;
}
.nav-caret {
    margin-left: auto;
    transition: transform 0.2s ease;
}
.nav-group-toggle[aria-expanded="true"] .nav-caret {
    transform: rotate(180deg);
}

.sidebar-footer {
    flex-shrink: 0;
}

/* ───────────── Desktop icon-rail (hover to expand) ───────────── */
@media (min-width: 992px) {
    /* Collapsed: center icons, hide text */
    .sidebar:not(:hover) .sidebar-brand {
        justify-content: center;
        padding-left: 0;
        padding-right: 0;
    }
    .sidebar:not(:hover) .sidebar-brand a {
        justify-content: center;
        width: auto;
    }
    .sidebar:not(:hover) .nav-link,
    .sidebar:not(:hover) .nav-group-toggle {
        justify-content: center;
        padding-left: 0;
        padding-right: 0;
    }
    .sidebar:not(:hover) .sidebar-footer .d-flex {
        justify-content: center;
    }

    /* Hide text-only elements while collapsed */
    .sidebar .sidebar-brand-text,
    .sidebar .nav-label,
    .sidebar .nav-caret,
    .sidebar .sidebar-footer .flex-grow-1,
    .sidebar .sidebar-footer form,
    .sidebar .sidebar-footer a[aria-label="My profile"] {
        display: none;
    }
    .sidebar:hover .sidebar-brand-text { display: inline; }
    .sidebar:hover .nav-label { display: inline; }
    .sidebar:hover .nav-caret { display: inline-block; }
    .sidebar:hover .sidebar-footer .flex-grow-1 { display: block; }
    .sidebar:hover .sidebar-footer form { display: block; }
    .sidebar:hover .sidebar-footer a[aria-label="My profile"] { display: inline-flex; }

    /* When a dropdown group is open, pin the rail open so the submenu is visible */
    .sidebar.force-open {
        width: var(--sidebar-width);
        z-index: 1040;
        box-shadow: 0 0 1.5rem rgba(0, 0, 0, 0.25);
    }
    .sidebar.force-open:not(:hover) .sidebar-brand,
    .sidebar.force-open:not(:hover) .sidebar-brand a {
        justify-content: flex-start;
        padding-left: 1rem;
        padding-right: 1rem;
    }
    .sidebar.force-open:not(:hover) .nav-link,
    .sidebar.force-open:not(:hover) .nav-group-toggle {
        justify-content: flex-start;
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }
    .sidebar.force-open .sidebar-brand-text { display: inline; }
    .sidebar.force-open .nav-label { display: inline; }
    .sidebar.force-open .nav-caret { display: inline-block; }
    .sidebar.force-open .sidebar-footer .flex-grow-1 { display: block; }
    .sidebar.force-open .sidebar-footer form { display: block; }
    .sidebar.force-open .sidebar-footer a[aria-label="My profile"] { display: inline-flex; }
    .sidebar.force-open ~ #page-content-wrapper { margin-left: var(--sidebar-width); }
    .sidebar.force-open ~ #page-content-wrapper .app-topbar { left: var(--sidebar-width); }
}

/* ───────────── Sidebar backdrop & mobile drawer ───────────── */
.sidebar-backdrop {
    display: none;
}
@media (max-width: 991.98px) {
    .app-topbar {
        left: 0;
    }
    .sidebar {
        margin-left: 0;
        top: 0;
        width: var(--sidebar-width);
        height: 100vh;
        z-index: 1060;
        transform: translateX(-100%);
    }
    .sidebar-toggled .sidebar {
        margin-left: 0;
        transform: translateX(0);
    }
    #page-content-wrapper {
        margin-left: 0;
    }
    .sidebar-toggled #page-content-wrapper {
        margin-left: 0;
    }
    .sidebar-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1025;
    }
    .sidebar-toggled .sidebar-backdrop {
        display: block;
    }
}

/* ───────────── Navbar / Header ───────────── */
.navbar {
    min-height: var(--header-height);
}
.navbar .navbar-brand {
    color: var(--bs-body-color);
}
.navbar-search {
    min-width: 0;
    max-width: 420px;
}
.navbar-search .input-group {
    flex-wrap: nowrap;
    min-width: 0;
}
.navbar-search .form-control {
    min-width: 0;
}
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    flex-shrink: 0;
    border: 1px solid transparent;
    background: transparent;
    color: var(--bs-body-color);
    border-radius: 0.375rem;
    transition: background-color 0.15s ease;
}
.btn-icon:hover {
    background-color: rgba(0, 0, 0, 0.06);
    color: var(--bs-body-color);
}
[data-bs-theme="dark"] .btn-icon:hover {
    background-color: rgba(255, 255, 255, 0.1);
}
.navbar .form-control:focus {
    box-shadow: none;
}

/* ───────────── General ───────────── */
.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    border-radius: 0.5rem;
}
.card-header {
    background: transparent;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    font-weight: 600;
}
[data-bs-theme="dark"] .card-header {
    border-bottom-color: rgba(255, 255, 255, 0.1);
}
.btn {
    border-radius: 0.375rem;
}
.table > :not(caption) > * > * {
    padding: 0.75rem;
    vertical-align: middle;
}
.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 1rem;
}
.pagination {
    margin-bottom: 0;
}
.empty-state {
    padding: 4rem 2rem;
    text-align: center;
}
.empty-state i {
    font-size: 3rem;
    color: #adb5bd;
}
.badge {
    font-weight: 500;
    padding: 0.35em 0.65em;
}
.form-control:focus, .btn:focus {
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

/* ───────────── Leave management helpers ───────────── */
.avatar-sm {
    width: 30px;
    height: 30px;
    font-size: 0.75rem;
    font-weight: 600;
    flex-shrink: 0;
}

.timeline-line {
    width: 2px;
    background-color: #dee2e6;
    margin-top: 0.25rem;
}

[data-bs-theme="dark"] .timeline-line {
    background-color: rgba(255, 255, 255, 0.15);
}

/* ───────────── Shared brand logo ───────────── */
.brand-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 0.6rem;
    background: linear-gradient(135deg, var(--primary-color), #6610f2);
    color: #fff;
    font-size: 1.15rem;
    flex-shrink: 0;
}

/* Active nav item with left accent bar */
.sidebar .nav-link.active {
    position: relative;
}
.sidebar .nav-link.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 60%;
    width: 4px;
    border-radius: 0 3px 3px 0;
    background: #fff;
}

/* Expanded group toggle */
.nav-group-toggle[aria-expanded="true"] {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.08);
}

.sidebar-footer a.text-white-50:hover {
    color: #fff !important;
}

/* ───────────── Navbar: search pill & quick create ───────────── */
.navbar-search .form-control:focus {
    border-color: var(--bs-border-color);
}
.btn-create {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.dropdown-menu .dropdown-item i {
    color: var(--primary-color);
}

/* ───────────── App top bar (split navbar) ───────────── */
.app-topbar {
    position: fixed;
    top: 0;
    left: var(--sidebar-collapsed-width);
    right: 0;
    z-index: 1050;
    min-height: var(--header-height);
    padding: 0;
    background-color: var(--bs-body-bg);
    border-bottom: 1px solid var(--bs-border-color);
    transition: left 0.2s ease;
}