:root {
    --sidebar-width: 260px;
    --header-height: 65px;
    --content-gutter: 1rem;
}

html, body { min-height: 100%; }
body { background: var(--bs-tertiary-bg); }

.app-icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    flex: 0 0 auto;
    vertical-align: -0.125em;
    overflow: visible;
    fill: currentColor;
}
.icon-btn .app-icon { font-size: .95rem; }

.app-shell { min-height: 100vh; display: flex; }
.app-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 1045;
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    background: var(--app-sidebar-start, #172033);
    color: #fff;
    transform: translateX(-100%);
    transition: transform .2s ease;
}
.app-sidebar.show { transform: translateX(0); }
.sidebar-brand {
    height: var(--header-height);
    min-height: var(--header-height);
    flex: 0 0 var(--header-height);
    display: flex;
    align-items: center;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
}
.brand-mark, .login-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--app-primary, var(--bs-primary));
    color: #fff;
}
.login-logo { width: 58px; height: 58px; font-size: 1.4rem; }
.sidebar-label { color: rgba(255,255,255,.45); font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; padding: .75rem .75rem .35rem; }
.sidebar-link { color: rgba(255,255,255,.72); display: flex; gap: .8rem; align-items: center; padding: .72rem .85rem; margin: .15rem 0; border-radius: .65rem; text-decoration: none; transition: .15s ease; }
.sidebar-link:hover { color: #fff; background: rgba(255,255,255,.08); }
.sidebar-link.active { color: #fff; background: var(--app-primary, var(--bs-primary)); }
.sidebar-link .app-icon { width: 1.25rem; height: 1.05rem; text-align: center; font-size: 1.05rem; }
.sidebar-backdrop { display: none; position: fixed; inset: 0; z-index: 1040; background: rgba(0,0,0,.45); }
.sidebar-backdrop.show { display: block; }
body.sidebar-open { overflow: hidden; }

.app-main { min-width: 0; width: 100%; display: flex; flex-direction: column; min-height: 100vh; }
.app-header {
    height: var(--header-height);
    min-height: var(--header-height);
    flex: 0 0 var(--header-height);
    padding-left: var(--content-gutter) !important;
    padding-right: var(--content-gutter) !important;
}
.app-content {
    flex: 1;
    max-width: 1800px;
    padding-left: var(--content-gutter) !important;
    padding-right: var(--content-gutter) !important;
}
.app-footer {
    padding-left: var(--content-gutter) !important;
    padding-right: var(--content-gutter) !important;
}
.user-avatar { width: 38px; height: 38px; padding: 0; font-weight: 700; }

.stat-card { transition: transform .18s ease, box-shadow .18s ease; }
.stat-card:hover { transform: translateY(-2px); }
.stat-icon { width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }
.feature-tile { display: flex; align-items: center; gap: .9rem; padding: 1rem; border: 1px solid var(--bs-border-color); border-radius: .8rem; height: 100%; }
.feature-tile > .app-icon { font-size: 1.35rem; color: var(--app-primary, var(--bs-primary)); }
.feature-tile small { display: block; color: var(--bs-secondary-color); margin-top: .15rem; }

.login-page { background: radial-gradient(circle at top right, rgba(var(--app-primary-rgb, 13,110,253),.14), transparent 30%), var(--bs-tertiary-bg); }
.login-card { border-radius: 1rem; }

div.dt-container div.dt-search input { min-width: 200px; }
.table > :not(caption) > * > * { vertical-align: middle; }

@media (min-width: 992px) {
    .app-sidebar { transform: translateX(0); }
    .app-main { margin-left: var(--sidebar-width); width: calc(100% - var(--sidebar-width)); }
    .sidebar-backdrop { display: none !important; }
    body.sidebar-open { overflow: auto; }
}

@media (max-width: 575.98px) {
    :root { --content-gutter: .75rem; }
    div.dt-container div.dt-layout-row { gap: .65rem; }
    div.dt-container div.dt-layout-cell { width: 100%; }
    div.dt-container div.dt-search input { width: 100%; margin-left: 0; }
    div.dt-container div.dt-search { text-align: left; }
}

.permission-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .75rem; }
.permission-group { background: var(--bs-tertiary-bg); }
.profile-avatar { width: 68px; height: 68px; display: flex; align-items: center; justify-content: center; border-radius: 20px; background: var(--app-soft, var(--bs-primary-bg-subtle)); color: var(--app-primary, var(--bs-primary)); font-size: 1.8rem; font-weight: 800; }
.toast-container { z-index: 1100; }
code { word-break: break-word; }
@media (max-width: 767.98px) { .permission-grid { grid-template-columns: 1fr; } }