/* ============================================================
   CMS Design System — Shell v2 : sidebar, AppBar, contenu (DS.3, V1-DS)
   Maquettes : docs/designs/mockups-v2/v2-03…06 ; cotes : palette-v2.md §8 (×0,8).
   Toutes les couleurs passent par les tokens (thème actif en base).
   Largeurs pilotées par --_sb-w ; la mise en page interne de la sidebar
   s'adapte à sa propre largeur (container query « sidebar »).
   ============================================================ */

/* ─── Structure ───────────────────────────────────────────── */
.cms-shell {
    --_sb-w: var(--sidebar-width-expanded);
    --_main-offset: var(--_sb-w);
    min-height: 100vh;
    background-color: var(--color-surface-app);
}

.cms-shell--collapsed {
    --_sb-w: var(--sidebar-width-collapsed);
}

.cms-shell__main {
    margin-left: var(--_main-offset);
    min-width: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--duration-slow) var(--easing-default);
}

.cms-shell__backdrop {
    display: none;
}

.cms-content {
    flex: 1;
    min-width: 0;
    padding: 0 var(--space-4) var(--space-6) var(--space-4);
    outline: none;
}

/* Cartes de contenu v2 : coins arrondis (tables 24 px, panneaux 16 px) */
.cms-content .mud-table {
    border-radius: var(--radius-card);
    overflow: hidden;
}

.cms-content .mud-paper:not(.mud-table):not(.mud-popover):not(.mud-menu-list) {
    border-radius: var(--radius-xl);
}

/* Lien d'évitement (clavier) */
.cms-skip-link {
    position: absolute;
    left: var(--space-4);
    top: -100px;
    z-index: 2000;
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary);
    color: var(--color-text-on-primary);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
}

.cms-skip-link:focus,
.cms-skip-link:focus-visible {
    top: var(--space-2);
}

/* ─── Sidebar ─────────────────────────────────────────────── */
.cms-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 1100;
    width: var(--_sb-w);
    display: flex;
    flex-direction: column;
    background-color: var(--color-surface-sidebar);
    border-right: 1px solid var(--color-border-sidebar);
    color: var(--color-text-nav);
    font-family: var(--font-family-sans);
    container: sidebar / inline-size;
    transition: width var(--duration-slow) var(--easing-default),
                transform var(--duration-slow) var(--easing-default),
                box-shadow var(--duration-slow) var(--easing-default);
}

.cms-sidebar__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    min-height: var(--appbar-height);
    padding: 0 var(--space-3) 0 var(--space-5);
    box-sizing: border-box;
}

.cms-sidebar__brand {
    font-size: var(--text-3xl);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    color: var(--color-text-brand);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cms-sidebar__lang {
    display: none;
    font-size: var(--text-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-brand);
    line-height: 1;
}

.cms-sidebar__toggle,
.cms-sidebar__close-overlay {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-icon-nav);
    cursor: pointer;
    transition: background-color var(--duration-fast) var(--easing-default);
}

.cms-sidebar__toggle .mud-icon-root,
.cms-sidebar__close-overlay .mud-icon-root {
    width: 28px;
    height: 28px;
}

.cms-sidebar__toggle:hover,
.cms-sidebar__close-overlay:hover {
    background-color: var(--color-surface-nav-hover);
}

.cms-sidebar__close-overlay {
    display: none;
}

.cms-sidebar__scroll {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--space-2) 0;
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent-scrollbar) transparent;
}

.cms-sidebar__empty {
    padding: var(--space-4) var(--space-5);
    color: var(--color-text-nav-muted);
    font-size: var(--text-sm);
}

.cms-sidebar__footer {
    padding: var(--space-3) 0 var(--space-5);
}

/* ─── Items de navigation ─────────────────────────────────── */
.cms-nav,
.cms-nav__submenu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cms-nav__item {
    position: relative;
}

.cms-nav__item--level-1 + .cms-nav__item--level-1 {
    margin-top: var(--space-1);
}

.cms-nav__link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: calc(100% - 2 * var(--space-3));
    min-height: 48px;
    margin: 0 var(--space-3);
    padding: 0 var(--space-2) 0 var(--space-4);
    box-sizing: border-box;
    border: none;
    border-radius: var(--radius-nav-item);
    background: transparent;
    color: var(--color-text-nav);
    font-family: inherit;
    font-size: var(--text-base);
    font-weight: var(--font-weight-regular);
    line-height: 1.3;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
    transition: background-color var(--duration-fast) var(--easing-default),
                color var(--duration-fast) var(--easing-default);
}

.cms-nav__link:hover {
    color: var(--color-text-nav-hover);
    background-color: var(--color-surface-nav-hover);
}

.cms-nav__icon.mud-icon-root {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-icon-nav);
}

.cms-nav__label {
    flex: 1;
    min-width: 0;
    padding: 2px 0;
    overflow-wrap: anywhere;
    line-height: 1.25;
}

.cms-nav__chevron.mud-icon-root {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-left: calc(-1 * var(--space-1));
    color: currentColor;
    transition: transform var(--duration-base) var(--easing-default);
}

.cms-nav__link.is-open .cms-nav__chevron {
    transform: rotate(180deg);
}

/* Item actif (ou groupe contenant la page courante) : pill dégradée */
.cms-nav__item--level-1 > .cms-nav__link.is-active {
    background: var(--gradient-nav-active);
    color: var(--color-text-on-primary);
    box-shadow: 0 0 0 2px var(--color-border-ring);
}

.cms-nav__item--level-1 > .cms-nav__link.is-active .cms-nav__icon {
    color: var(--color-text-on-primary);
}

/* Sous-menu : conteneur teinté, sous-items indentés sans icône */
.cms-nav__item--group > .cms-nav__submenu {
    display: none;
}

.cms-nav__item--group > .cms-nav__link.is-open + .cms-nav__submenu {
    display: block;
}

.cms-nav__item--level-1 > .cms-nav__submenu {
    margin: var(--space-2) var(--space-3) var(--space-1);
    padding: var(--space-1) 0;
    background-color: var(--color-surface-submenu);
    border-radius: var(--radius-nav-item);
    box-shadow: 0 0 0 2px var(--color-border-ring);
}

.cms-nav__submenu .cms-nav__link {
    width: 100%;
    margin: 0;
    min-height: 36px;
    padding: var(--space-1) var(--space-4) var(--space-1) 52px;
    border-radius: 0;
    color: var(--color-text-nav-muted);
    font-size: var(--text-base);
}

.cms-nav__submenu .cms-nav__link:hover {
    color: var(--color-text-nav-hover);
    background-color: transparent;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.cms-nav__submenu .cms-nav__link.is-active {
    color: var(--color-text-nav-sub-active);
    font-weight: var(--font-weight-medium);
}

/* 3e niveau (ex. Administration › Configuration UI › …) */
.cms-nav__submenu .cms-nav__submenu .cms-nav__link {
    padding-left: 68px;
    font-size: var(--text-sm);
}

.cms-nav__submenu .cms-nav__link--group .cms-nav__chevron {
    width: 18px;
    height: 18px;
}

/* Déconnexion (pied de sidebar) */
.cms-nav__link--logout {
    margin-top: 0;
}

/* Squelette de chargement */
.cms-nav__skeleton {
    margin: var(--space-2) var(--space-3);
    height: 40px;
}

.cms-nav__skeleton span {
    display: block;
    height: 100%;
    border-radius: var(--radius-nav-item);
    background-color: var(--color-surface-nav-hover, rgba(0,0,0,.06));
    background-color: color-mix(in srgb, var(--color-text-nav) 8%, transparent);
    animation: cmsSkeletonPulse 1.5s ease-in-out infinite;
}

/* ─── Sidebar en rail (largeur ≤ 120 px, repliée ou tablette) ── */
@container sidebar (max-width: 120px) {
    .cms-sidebar__header {
        flex-direction: column;
        justify-content: center;
        gap: var(--space-1);
        padding: var(--space-3) 0;
    }

    .cms-sidebar__brand {
        display: none;
    }

    .cms-sidebar__lang {
        display: block;
    }

    .cms-sidebar__toggle .mud-icon-root {
        width: 24px;
        height: 24px;
    }

    .cms-sidebar__scroll {
        overflow: visible;
    }

    .cms-nav__item--level-1 + .cms-nav__item--level-1 {
        margin-top: var(--space-2);
    }

    .cms-nav__link {
        justify-content: center;
        width: 56px;
        margin: 0 auto;
        padding: 0;
    }

    .cms-nav__label,
    .cms-nav__item--level-1 > .cms-nav__link .cms-nav__chevron {
        display: none;
    }

    .cms-nav__item--level-1 > .cms-nav__submenu,
    .cms-nav__item--group > .cms-nav__link.is-open + .cms-nav__submenu {
        display: none;
    }

    /* Survol / focus clavier d'un groupe : sous-menu en flyout à droite du rail */
    .cms-nav__item--level-1.cms-nav__item--group:hover > .cms-nav__submenu,
    .cms-nav__item--level-1.cms-nav__item--group:focus-within > .cms-nav__submenu {
        display: block;
        position: absolute;
        left: calc(100% - var(--space-2));
        top: 0;
        z-index: 5;
        min-width: 220px;
        margin: 0;
        box-shadow: 0 0 0 2px var(--color-border-ring), var(--shadow-lg);
    }

    .cms-nav__item--level-1.cms-nav__item--group:hover > .cms-nav__submenu .cms-nav__link,
    .cms-nav__item--level-1.cms-nav__item--group:focus-within > .cms-nav__submenu .cms-nav__link {
        justify-content: flex-start;
        width: 100%;
        padding-left: var(--space-4);
    }

    .cms-nav__submenu .cms-nav__label {
        display: block;
    }
}

/* ─── AppBar (sans barre distincte : fond = page) ─────────── */
.cms-appbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--appbar-height);
    padding: 0 var(--space-6) 0 var(--space-4);
    box-sizing: border-box;
    background-color: var(--color-surface-app);
    color: var(--color-text-primary);
    font-family: var(--font-family-sans);
}

.cms-appbar__welcome {
    flex: 1;
    min-width: 0;
    margin: 0;
    font-size: var(--text-xl);
    font-weight: var(--font-weight-regular);
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cms-appbar__welcome strong {
    font-weight: var(--font-weight-regular);
}

.cms-appbar__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.cms-appbar__icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--color-icon);
    cursor: pointer;
    transition: background-color var(--duration-fast) var(--easing-default);
}

.cms-appbar__icon-btn:hover {
    background-color: var(--color-primary-50);
}

.cms-appbar__icon-btn .mud-icon-root {
    width: 32px;
    height: 32px;
}

.cms-appbar__menu-btn {
    display: none;
    margin-left: calc(-1 * var(--space-2));
}

.cms-appbar__badge .mud-badge.mud-badge-top.right.mud-badge-overlap {
    inset: auto auto calc(100% - 14px) calc(100% - 14px);
}

/* Avatar du tenant */
.cms-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    padding: 0;
    border: 3px solid #FFFFFF;
    border-radius: 50%;
    background-color: var(--color-primary);
    box-shadow: var(--shadow-avatar);
    overflow: hidden;
    cursor: pointer;
}

.cms-avatar__img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #FFFFFF;
}

.cms-avatar__initials {
    color: var(--color-text-on-primary);
    font-size: var(--text-lg);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.02em;
}

.cms-user-menu__head {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: var(--space-3) var(--space-4);
    max-width: 280px;
    font-family: var(--font-family-sans);
}

.cms-user-menu__head small {
    color: var(--color-text-secondary);
}

/* Popover notifications */
.cms-notif {
    background-color: var(--color-surface-input);
    font-family: var(--font-family-sans);
}

.cms-notif__header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-3) var(--space-2) var(--space-4);
    border-bottom: 1px solid var(--color-border-default);
}

.cms-notif__title {
    flex: 1;
    font-weight: var(--font-weight-semibold);
}

.cms-notif__empty {
    margin: 0;
    padding: var(--space-4);
    color: var(--color-text-secondary);
}

.cms-notif__list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.cms-notif__item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-3) var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-default);
}

.cms-notif__item.is-unread {
    background-color: var(--color-primary-50);
}

.cms-notif__body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cms-notif__item-title {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
}

.cms-notif__item.is-unread .cms-notif__item-title {
    font-weight: var(--font-weight-semibold);
}

.cms-notif__message,
.cms-notif__date {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
}

/* ─── Fil d'Ariane v2 ─────────────────────────────────────── */
.cms-breadcrumbs.mud-breadcrumbs {
    padding: 0 0 var(--space-3);
    font-family: var(--font-family-sans);
    font-size: var(--text-lg);
}

.cms-breadcrumbs .mud-breadcrumb-item > a,
.cms-breadcrumbs .mud-breadcrumb-item > span,
.cms-breadcrumbs .mud-breadcrumb-item {
    color: var(--color-primary);
    text-decoration: none;
}

.cms-breadcrumbs .mud-breadcrumb-item > a:hover {
    text-decoration: underline;
}

.cms-breadcrumbs .mud-breadcrumb-item.mud-disabled > a,
.cms-breadcrumbs .mud-breadcrumb-item.mud-disabled {
    color: var(--color-primary);
    opacity: 1;
}

.cms-breadcrumbs__sep.mud-icon-root {
    width: 22px;
    height: 22px;
    color: var(--color-primary-600);
}

.cms-breadcrumbs .mud-breadcrumb-separator {
    padding: 0 var(--space-1);
}

/* ─── Scrollbar v2 (pouce accent, 8 px, rayon 4) ──────────── */
.cms-shell ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.cms-shell ::-webkit-scrollbar-track {
    background: transparent;
}

.cms-shell ::-webkit-scrollbar-thumb {
    background-color: var(--color-accent-scrollbar);
    border-radius: 4px;
}