body.has-app-sidebar {
    min-height: 100vh;
}

.main-content,
.platform-main {
    min-height: 100vh;
}

.main-content {
    margin-left: var(--sidebar-width);
    padding: 2rem clamp(1rem, 2vw, 2rem);
}

.main-content-inner,
.platform-main-inner {
    max-width: var(--page-max-width);
}

.page-shell,
.platform-main-inner {
    display: grid;
    gap: 1.5rem;
}

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.92);
    border-right: 1px solid var(--app-border-default);
    box-shadow: var(--app-shadow-sm);
    backdrop-filter: blur(16px);
    z-index: 1030;
}

.sidebar-body {
    flex: 1 1 auto;
    overflow-y: auto;
    padding-bottom: 1rem;
}

.sidebar-brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 1rem 1rem 0.75rem;
}

.sidebar-search-shell {
    margin: 0 1rem 1rem;
}

.sidebar-section-title {
    margin: 0 1rem 0.75rem;
}

.sidebar-recent-list {
    margin: 0 0.75rem 1rem;
}

.sidebar nav.nav {
    padding-bottom: 1rem;
}

.platform-navbar {
    position: fixed;
    inset: 0 0 auto;
    height: var(--platform-navbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0 1.5rem;
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid var(--app-border-default);
    backdrop-filter: blur(18px);
    z-index: 1040;
}

.platform-container {
    display: flex;
    margin-top: var(--platform-navbar-height);
    min-height: calc(100vh - var(--platform-navbar-height));
}

.platform-sidebar {
    position: fixed;
    inset: var(--platform-navbar-height) auto 0 0;
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.94);
    border-right: 1px solid var(--app-border-default);
    box-shadow: var(--app-shadow-sm);
    backdrop-filter: blur(16px);
    z-index: 1035;
}

.platform-main {
    flex: 1 1 auto;
    margin-left: var(--sidebar-width);
    padding: 2rem clamp(1rem, 2vw, 2rem);
    background: linear-gradient(180deg, #f9fbff 0%, var(--app-page-bg) 100%);
}

.auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: stretch;
    justify-content: center;
    background:
        radial-gradient(circle at 14% 18%, rgba(37, 99, 235, 0.12), transparent 28%),
        radial-gradient(circle at 82% 78%, rgba(5, 150, 105, 0.1), transparent 22%),
        linear-gradient(180deg, #f8fbff 0%, var(--app-page-bg) 100%);
}

.auth-shell__inner {
    width: min(1100px, 100%);
    min-height: 100vh;
    display: grid;
    grid-template-columns: minmax(280px, 1fr) minmax(360px, 460px);
    align-items: stretch;
    padding: 2rem;
    gap: 1.5rem;
}

.home-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background:
        radial-gradient(circle at 12% 18%, rgba(59, 130, 246, 0.16), transparent 26%),
        radial-gradient(circle at 88% 82%, rgba(16, 185, 129, 0.1), transparent 22%),
        linear-gradient(180deg, #f8fbff 0%, var(--app-page-bg) 100%);
}

.impersonation-banner {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1090;
    padding: 0.85rem 1.25rem;
}

.impersonation-banner__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.9rem 1.1rem;
    border-radius: var(--app-radius-md);
    background: linear-gradient(135deg, #1d4ed8 0%, #2563eb 46%, #0f766e 100%);
    color: #fff;
    box-shadow: var(--app-shadow-md);
}

.impersonation-banner__icon {
    font-size: 1.15rem;
}

.impersonation-banner__spacer {
    height: 5.4rem;
}

@media (max-width: 991.98px) {
    :root {
        --sidebar-width: 16rem;
    }

    .platform-navbar {
        padding-inline: 1rem;
    }
}

@media (max-width: 767.98px) {
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }

    .sidebar {
        position: sticky;
        width: 100%;
        min-height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--app-border-default);
    }

    .sidebar-body {
        max-height: calc(100vh - 4.85rem);
    }

    .platform-sidebar {
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        width: min(18rem, calc(100vw - 2rem));
        box-shadow: var(--app-shadow-lg);
    }

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

    .platform-main {
        margin-left: 0;
        padding: 1rem;
    }

    .auth-shell__inner {
        grid-template-columns: 1fr;
        padding: 1rem;
    }

    .home-shell {
        padding: 1rem;
    }

    .impersonation-banner {
        padding: 0.75rem;
    }

    .impersonation-banner__inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .impersonation-banner__spacer {
        height: 7.4rem;
    }
}

@media print {
    .sidebar,
    .platform-navbar,
    .platform-sidebar,
    .no-print,
    .impersonation-banner {
        display: none !important;
    }

    .main-content,
    .platform-main {
        margin-left: 0;
        margin-top: 0;
        padding: 0;
    }

    body {
        background: #fff !important;
    }
}