.skip-link {
    position: fixed;
    inset-block-start: .75rem;
    inset-inline-start: .75rem;
    z-index: 2000;
    translate: 0 -180%;
    padding: .7rem 1rem;
    border-radius: .6rem;
    color: #fff;
    background: #172033;
    font-weight: 800;
}

.skip-link:focus { translate: 0; }

.platform-owner-shell {
    grid-template-columns: 272px minmax(0, 1fr);
    min-width: 0;
    transition: grid-template-columns var(--platform-duration) ease;
}

.platform-owner-shell.owner-nav-collapsed {
    grid-template-columns: 82px minmax(0, 1fr);
}

.platform-owner-shell .sidebar {
    z-index: 50;
    padding: var(--platform-space-5) var(--platform-space-4);
    background:
        radial-gradient(circle at 18% 0%, rgba(65, 119, 218, .26), transparent 17rem),
        linear-gradient(180deg, #101b31 0%, #111d35 58%, #0d172a 100%);
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,.18) transparent;
}

.platform-owner-shell .brand {
    min-height: 58px;
    margin: 0 0 var(--platform-space-4);
    padding: .5rem;
}

.sidebar-mobile-close {
    display: none;
    position: absolute;
    inset-block-start: .75rem;
    inset-inline-end: .75rem;
    width: 38px;
    height: 38px;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: .6rem;
    color: #fff;
    background: rgba(255,255,255,.08);
    font-size: 1.35rem;
}

.platform-owner-shell .brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    box-shadow: none;
}

.platform-owner-shell .brand-copy {
    min-width: 0;
    transition: opacity var(--platform-duration) ease, width var(--platform-duration) ease;
}

.platform-owner-shell .brand-copy strong { font-size: 1rem; }
.platform-owner-shell .brand-copy small { font-size: .68rem; }

.owner-sidebar-collapse {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    width: 100%;
    min-height: 36px;
    margin-block-end: var(--platform-space-4);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--platform-radius-md);
    color: rgba(255,255,255,.72);
    background: rgba(255,255,255,.04);
    font-size: var(--platform-font-small);
    font-weight: 700;
}

.owner-sidebar-collapse:hover { color: #fff; background: rgba(255,255,255,.09); }
.owner-sidebar-collapse .app-icon { width: 1rem; transition: rotate var(--platform-duration) ease; }
.owner-nav-collapsed .owner-sidebar-collapse .app-icon { rotate: 180deg; }

.platform-owner-shell .nav-stack { gap: var(--platform-space-2); }
.platform-owner-shell .nav-caption {
    margin: var(--platform-space-3) .8rem var(--platform-space-2);
    color: rgba(255,255,255,.42);
    letter-spacing: .02em;
}

.platform-owner-shell .nav-item {
    gap: .75rem;
    min-height: 46px;
    padding: .7rem .8rem;
    border: 1px solid transparent;
    border-radius: var(--platform-radius-md);
}

.platform-owner-shell .nav-item .app-icon {
    width: 1.15rem;
    height: 1.15rem;
    flex: 0 0 auto;
}

.platform-owner-shell .nav-stack a.active {
    border-color: rgba(255,255,255,.1);
    background: linear-gradient(135deg, rgba(75, 129, 232, .26), rgba(255,255,255,.08));
    box-shadow: inset -3px 0 0 #76a2f5;
}

.platform-owner-shell .nav-stack a.active::before { display: none; }
.platform-owner-shell .sidebar-status { margin-top: auto; }

.platform-owner-shell.owner-nav-collapsed .brand { justify-content: center; }
.platform-owner-shell.owner-nav-collapsed .brand-copy,
.platform-owner-shell.owner-nav-collapsed .nav-caption,
.platform-owner-shell.owner-nav-collapsed .nav-item > span,
.platform-owner-shell.owner-nav-collapsed .owner-sidebar-collapse > span,
.platform-owner-shell.owner-nav-collapsed .sidebar-status > div {
    display: none;
}

.platform-owner-shell.owner-nav-collapsed .nav-item,
.platform-owner-shell.owner-nav-collapsed .owner-sidebar-collapse {
    justify-content: center;
    padding-inline: .6rem;
}

.platform-owner-shell.owner-nav-collapsed .nav-item {
    position: relative;
}

.platform-owner-shell.owner-nav-collapsed .nav-item:hover::after,
.platform-owner-shell.owner-nav-collapsed .nav-item:focus-visible::after {
    content: attr(data-tooltip);
    position: absolute;
    z-index: 80;
    inset-inline-start: calc(100% + .65rem);
    min-width: max-content;
    padding: .5rem .7rem;
    border-radius: .5rem;
    color: #fff;
    background: #172033;
    box-shadow: var(--platform-shadow-float);
    font-size: .75rem;
}

.platform-owner-shell .main-area {
    width: 100%;
    max-width: none;
    min-width: 0;
    margin: 0;
    padding: 0;
    background: var(--platform-bg);
}

.platform-owner-shell .topbar {
    position: sticky;
    top: 0;
    z-index: 35;
    min-height: 68px;
    margin: 0;
    padding: .75rem clamp(1rem, 2.5vw, 2rem);
    border-bottom: 1px solid rgba(226, 232, 240, .9);
    background: rgba(255,255,255,.9);
    backdrop-filter: blur(14px);
}

.platform-owner-shell .topbar-context {
    display: flex;
    align-items: center;
    gap: var(--platform-space-3);
}

.platform-owner-shell .topbar-context > div > span {
    font-size: var(--platform-font-caption);
}

.platform-owner-shell .topbar-context strong {
    font-size: .95rem;
}

.platform-owner-shell .topbar-tools {
    display: flex;
    align-items: center;
    gap: var(--platform-space-3);
}

.platform-owner-shell .date-context {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    white-space: nowrap;
}

.platform-owner-shell .user-chip {
    min-height: 42px;
    padding: .3rem .35rem .3rem .7rem;
    border-color: var(--platform-border);
    box-shadow: none;
}

.platform-owner-shell .user-chip button { min-height: 32px; padding: .35rem .7rem; }

.platform-owner-shell .page-content {
    width: min(100%, 1540px);
    margin-inline: auto;
    padding: clamp(1rem, 2.4vw, 2rem);
}

.platform-owner-shell :where(.grid, .grid-2, .grid-4) > * {
    min-width: 0;
}

.platform-owner-shell .support-banner {
    margin: 0;
    border-radius: 0;
}