:root {
    --sidenav-width: 250px;
    --sidenav-collapsed-width: 72px;
    --topbar-height: 60px;
    --brand-color: #2f5eff;
}

html, body { height: 100%; }
body { background-color: #f4f6fb; }

/* ---------- App shell ---------- */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    transition: margin-left .25s ease;
}

/* ---------- Sidenav ---------- */
.sidenav {
    width: var(--sidenav-width);
    background: #101a34;
    color: #cdd6f4;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width .25s ease;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-x: hidden;
    z-index: 1030;
}

.sidenav-brand {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 1rem;
    border-bottom: 1px solid rgba(255,255,255,.08);
    white-space: nowrap;
    overflow: hidden;
}

.brand-logo-full { height: 26px; width: auto; }
.brand-logo-icon { height: 30px; width: auto; display: none; }

.sidenav-nav {
    flex: 1;
    padding: .75rem .5rem;
    display: flex;
    flex-direction: column;
    gap: .15rem;
}

.sidenav .nav-link {
    color: #cdd6f4;
    display: flex;
    align-items: center;
    gap: .85rem;
    padding: .65rem .75rem;
    border-radius: .5rem;
    white-space: nowrap;
    font-size: .93rem;
}

.sidenav .nav-link i { width: 1.25rem; text-align: center; }

.sidenav .nav-link:hover,
.sidenav .nav-link.active {
    background: rgba(47, 94, 255, .18);
    color: #fff;
}

.user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--brand-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: .85rem;
    flex-shrink: 0;
}

/* Collapsed (desktop icon-only) state */
.app-wrapper.collapsed .sidenav { width: var(--sidenav-collapsed-width); }
.app-wrapper.collapsed .brand-text,
.app-wrapper.collapsed .nav-text { display: none; }
.app-wrapper.collapsed .sidenav-brand {
    justify-content: center;
    padding-left: 0;
    padding-right: 0;
}
.app-wrapper.collapsed .brand-logo-full { display: none; }
.app-wrapper.collapsed .brand-logo-icon { display: block; }
.app-wrapper.collapsed .sidenav .nav-link {
    justify-content: center;
    gap: 0;
    padding-left: 0;
    padding-right: 0;
}
.app-wrapper.collapsed .sidenav .nav-link i { width: auto; }

/* ---------- Topbar ---------- */
.app-topbar {
    height: var(--topbar-height);
    background: #fff;
    border-bottom: 1px solid #e6e9f2;
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: 0 1rem;
    position: sticky;
    top: 0;
    z-index: 1020;
}

.topbar-title { font-size: 1.1rem; font-weight: 600; margin: 0; }

.topbar-user-toggle {
    display: flex;
    align-items: center;
    gap: .6rem;
    background: transparent;
    border: none;
    padding: .35rem .5rem;
    border-radius: .5rem;
    color: #1f2430;
}
.topbar-user-toggle:hover,
.topbar-user-toggle[aria-expanded="true"] { background: #f0f2f8; }
.topbar-user-toggle .fa-chevron-down { color: #8a8f9c; transition: transform .2s ease; }
.topbar-user-toggle[aria-expanded="true"] .fa-chevron-down { transform: rotate(180deg); }

.topbar-user-meta {
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
    max-width: 160px;
}
.topbar-user-name {
    font-size: .85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}
.topbar-user-role { font-size: .72rem; color: #8a8f9c; }

.btn-icon {
    border: none;
    background: transparent;
    font-size: 1.15rem;
    width: 40px;
    height: 40px;
    border-radius: .5rem;
}
.btn-icon:hover { background: #f0f2f8; }

.app-content { padding: 1.25rem; flex: 1; }

.sidenav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 1025;
}

/* ---------- Cards / stat tiles ---------- */
.stat-card {
    background: #fff;
    border-radius: .75rem;
    padding: 1.1rem 1.25rem;
    box-shadow: 0 1px 3px rgba(20,25,50,.06);
    height: 100%;
}
.stat-card .stat-value { font-size: 1.6rem; font-weight: 700; }
.stat-card .stat-icon {
    width: 44px; height: 44px; border-radius: .6rem;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; color: #fff;
}

.table-responsive-card { background: #fff; border-radius: .75rem; box-shadow: 0 1px 3px rgba(20,25,50,.06); }

/* Action dropdowns inside scrollable tables must escape the table's
   overflow clipping — see site.js which forces Popper's 'fixed' strategy
   for these; this just makes sure they paint above everything else. */
.dropdown-menu { z-index: 1055; }

/* ---------- Auth page ---------- */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #101a34, #2f5eff);
    padding: 1rem;
}
.auth-card {
    background: #fff;
    border-radius: 1rem;
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0,0,0,.2);
}

/* ---------- Mobile ---------- */
@media (max-width: 991.98px) {
    .sidenav {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-100%);
        box-shadow: 0 0 25px rgba(0,0,0,.25);
    }
    .app-wrapper.mobile-open .sidenav {
        transform: translateX(0);
        width: var(--sidenav-width) !important;
    }
    .app-wrapper.mobile-open .brand-text,
    .app-wrapper.mobile-open .nav-text { display: inline !important; }
    .app-wrapper.mobile-open .sidenav-backdrop { display: block; }

    .app-content { padding: 1rem .75rem; }
    .topbar-title { font-size: 1rem; }
}