.crm-app-admin {
    min-height: 100vh;
    height: 100vh;
    display: grid;
    grid-template-columns: 270px minmax(0, 1fr);
    background: var(--admin-modern-bg);
    color: var(--admin-modern-ink);
}

.crm-sidebar {
    width: 270px;
    min-height: 100vh;
    min-width: 0;
    padding: 18px 12px;
    border-right: 1px solid var(--admin-modern-line);
    background: linear-gradient(180deg, #06152b, #061931);
    color: #d8e4f7;
    display: flex;
    flex-direction: column;
    gap: 14px;
    overflow: hidden;
}

.crm-sidebar .crm-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 2px 10px 4px;
}

.crm-brand-logo,
.crm-brand-logo-square {
    width: 34px;
    height: 34px;
    border-radius: 11px;
    overflow: hidden;
    background: #ffffff;
    box-shadow: 0 8px 20px rgba(11, 37, 79, 0.28);
}

.crm-brand-logo img,
.crm-brand-logo-square img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.crm-brand-title {
    font-weight: 800;
    color: #f2f6ff;
    margin-bottom: 2px;
}

.crm-brand-subtitle {
    font-size: 11px;
    color: #a9b9d6;
    letter-spacing: 0.02em;
}

.crm-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
    min-height: 0;
    scrollbar-width: thin;
}

.crm-nav-section {
    display: grid;
    gap: 6px;
    margin-top: 4px;
}

.crm-nav-title {
    margin: 6px 10px;
    color: #a9b8d6;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: .08em;
}

.crm-nav-item {
    min-height: 42px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #d8e7fb;
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    column-gap: 10px;
    padding: 9px 12px;
    transition: all 0.16s ease;
}

.crm-nav-item:hover,
.crm-nav-item:focus-visible {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.crm-nav-item.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.34);
}

.crm-sidebar-footer {
    margin-top: auto;
    display: grid;
    gap: 10px;
    padding: 6px 0;
}

.crm-powered-by {
    margin-top: 6px;
    padding: 6px 10px;
    border-radius: 11px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.05);
    color: #b6c6e2;
    font-size: 11px;
    text-align: left;
}

.crm-main {
    min-width: 0;
    min-height: 100vh;
    padding: 16px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.crm-topbar {
    background: #ffffff;
    border: 1px solid var(--admin-modern-line);
    border-radius: 18px;
    box-shadow: var(--admin-modern-shadow-soft);
    min-height: 84px;
    padding: 14px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.crm-topbar-left .crm-page-title {
    margin: 0;
}

.crm-topbar-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.crm-page-scroll {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding-right: 4px;
}

.crm-main .crm-page-stack,
.crm-main .crm-settings-page,
.crm-main .detail-grid {
    width: 100%;
}

.sidebar-collapsed .crm-app-admin {
    grid-template-columns: 76px minmax(0, 1fr);
}

.sidebar-collapsed .crm-nav-item-text,
.sidebar-collapsed .crm-brand-copy,
.sidebar-collapsed .crm-brand-subtitle,
.sidebar-collapsed .crm-brand-title,
.sidebar-collapsed .crm-sidebar-footer .crm-powered-by,
.sidebar-collapsed .crm-powered-by {
    display: none;
}

.sidebar-collapsed .crm-nav-item {
    justify-content: center;
    grid-template-columns: 1fr;
    padding: 8px;
}

.sidebar-collapsed .crm-nav-item-icon {
    justify-self: center;
}

@media (max-width: 1024px) {
    .crm-app-admin {
        grid-template-columns: 0 minmax(0, 1fr);
    }

    .crm-sidebar {
        position: absolute;
        inset: 0 auto 0 0;
        z-index: 50;
        display: none;
        transform: translateX(-100%);
        transition: transform 0.2s ease;
    }

    body:not(.sidebar-open) .crm-sidebar {
        display: none;
    }

    body.sidebar-open .crm-sidebar {
        display: flex;
        transform: translateX(0);
        box-shadow: 0 18px 50px rgba(5, 20, 45, 0.25);
    }

    .crm-main {
        padding: 12px;
    }
}

/* =========================================================
   PHASE 2 CANONICAL ADMIN SHELL OWNERSHIP LAYER (2026-06-24)
   Owner: admin-modern-shell.css
   Scope: shell, sidebar, topbar, main-content canvas, collapsed desktop state
   ========================================================= */

body.crm-admin-layout {
    --crm-shell-sidebar-width: 296px;
    --crm-shell-sidebar-collapsed-width: 92px;
    overflow: hidden;
}

body.crm-admin-layout .crm-app-admin {
    display: grid;
    grid-template-columns: var(--crm-shell-sidebar-width) minmax(0, 1fr);
    min-height: 100vh;
    width: 100%;
    max-width: none;
    background: linear-gradient(180deg, #f5f8fd 0%, #edf3fb 100%);
}

body.crm-admin-layout.sidebar-collapsed .crm-app-admin {
    grid-template-columns: var(--crm-shell-sidebar-collapsed-width) minmax(0, 1fr);
}

body.crm-admin-layout .crm-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    width: var(--crm-shell-sidebar-width);
    max-width: var(--crm-shell-sidebar-width);
    min-width: var(--crm-shell-sidebar-width);
    flex: 0 0 var(--crm-shell-sidebar-width);
    min-width: 0;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 24px 18px 20px;
    box-sizing: border-box;
}

body.crm-admin-layout .crm-nav {
    min-width: 0;
}

body.crm-admin-layout .crm-nav-section {
    gap: 8px;
}

body.crm-admin-layout .crm-nav-title,
body.crm-admin-layout .crm-nav-item-text,
body.crm-admin-layout .crm-brand-copy,
body.crm-admin-layout .crm-powered-by {
    min-width: 0;
}

body.crm-admin-layout .crm-nav-item {
    min-height: 46px;
    border-radius: 14px;
}

body.crm-admin-layout .crm-nav-item-icon {
    flex: 0 0 18px;
}

body.crm-admin-layout .crm-admin-main-shell,
body.crm-admin-layout .crm-main {
    min-width: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

body.crm-admin-layout .crm-topbar {
    position: sticky;
    top: 0;
    z-index: 20;
    min-height: 88px;
    padding: 20px 28px;
    align-items: flex-start;
    gap: 18px;
    backdrop-filter: blur(16px);
    background: rgba(245, 248, 253, 0.9);
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

body.crm-admin-layout .crm-topbar-left,
body.crm-admin-layout .crm-topbar-right {
    min-width: 0;
}

body.crm-admin-layout .crm-topbar-right {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 12px;
}

body.crm-admin-layout .crm-page-title,
body.crm-admin-layout .crm-page-subtitle {
    max-width: none;
}

body.crm-admin-layout .crm-page-scroll,
body.crm-admin-layout .crm-admin-content-canvas {
    flex: 1 1 auto;
    min-width: 0;
    width: 100%;
    padding: 24px 28px 32px;
    overflow-x: hidden;
    overflow-y: auto;
}

body.crm-admin-layout .crm-admin-page-shell {
    display: flex;
    flex-direction: column;
    gap: 18px;
    width: 100%;
    min-width: 0;
    max-width: none;
}

body.crm-admin-layout .crm-admin-alert-stack,
body.crm-admin-layout .crm-admin-page-body {
    min-width: 0;
    width: 100%;
}

body.crm-admin-layout .crm-admin-page-body > * {
    min-width: 0;
}

body.crm-admin-layout.sidebar-collapsed .crm-brand-copy,
body.crm-admin-layout.sidebar-collapsed .crm-nav-title,
body.crm-admin-layout.sidebar-collapsed .crm-nav-item-text,
body.crm-admin-layout.sidebar-collapsed .crm-powered-by {
    display: none;
}

body.crm-admin-layout.sidebar-collapsed .crm-sidebar {
    width: var(--crm-shell-sidebar-collapsed-width) !important;
    max-width: var(--crm-shell-sidebar-collapsed-width) !important;
    min-width: var(--crm-shell-sidebar-collapsed-width) !important;
    flex: 0 0 var(--crm-shell-sidebar-collapsed-width) !important;
    padding-left: 14px;
    padding-right: 14px;
}

body.crm-admin-layout.sidebar-collapsed .crm-brand,
body.crm-admin-layout.sidebar-collapsed .crm-nav-item,
body.crm-admin-layout.sidebar-collapsed .crm-nav-item-footer {
    justify-content: center;
}

body.crm-admin-layout.sidebar-collapsed .crm-nav-item {
    padding-left: 0;
    padding-right: 0;
}

body.crm-admin-layout.sidebar-collapsed .crm-nav-item-icon {
    margin-right: 0;
}

@media (max-width: 1100px) {
    body.crm-admin-layout,
    body.crm-admin-layout .crm-app-admin {
        overflow: visible;
    }

    body.crm-admin-layout .crm-app-admin,
    body.crm-admin-layout.sidebar-collapsed .crm-app-admin {
        grid-template-columns: minmax(0, 1fr);
    }

    body.crm-admin-layout .crm-sidebar {
        position: relative;
        top: auto;
        height: auto;
        padding: 20px 16px 16px;
    }

    body.crm-admin-layout .crm-topbar {
        position: relative;
        top: auto;
        padding: 18px 20px;
    }

    body.crm-admin-layout .crm-page-scroll,
    body.crm-admin-layout .crm-admin-content-canvas {
        padding: 18px 20px 24px;
    }
}