/* ============================================================
   Secretary — App Shell Layout
   Two-column shell: sidebar + main, no top header / hard footer.
   ============================================================ */

.app-shell {
    display: flex;
    flex-direction: row;
    min-height: 100dvh;
    background: var(--neutral-layer-2);
    color: var(--neutral-foreground-rest);
}

/* -----------------------------
   Sidebar
   ----------------------------- */
.app-sidebar {
    display: flex;
    flex-direction: column;
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--neutral-layer-1);
    border-right: 1px solid var(--neutral-stroke-divider-rest);
    height: 100dvh;
    position: sticky;
    top: 0;
    transition: width 160ms ease;
}

.app-sidebar.is-collapsed {
    width: var(--sidebar-width-collapsed);
}

/* Brand block */
.app-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-4) var(--space-4);
    min-height: 64px;
}

.app-brand__mark {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--brand-accent) 0%, #7C8BFF 100%);
    color: #FFFFFF;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    letter-spacing: 0.02em;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.app-brand__text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
    min-width: 0;
    overflow: hidden;
}

.app-brand__name {
    font-weight: 600;
    font-size: 14px;
    color: var(--neutral-foreground-rest);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.app-brand__customer {
    font-size: 12px;
    color: var(--neutral-foreground-hint);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.app-sidebar.is-collapsed .app-brand__text {
    display: none;
}

/* Nav area */
.app-nav {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--space-2) var(--space-2) var(--space-4);
}

/* Sidebar footer (theme toggle + profile) */
.app-sidebar__footer {
    border-top: 1px solid var(--neutral-stroke-divider-rest);
    padding: var(--space-3) var(--space-3);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    flex-shrink: 0;
}

.app-sidebar.is-collapsed .app-sidebar__footer {
    flex-direction: column;
}

/* -----------------------------
   Main content
   ----------------------------- */
.app-main {
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 100dvh;
    background: var(--neutral-layer-2);
}

.app-content {
    flex: 1 1 auto;
    padding: var(--space-5) var(--space-6);
    max-width: 1600px;
    width: 100%;
    box-sizing: border-box;
}

.app-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-6);
    font-size: 12px;
    color: var(--neutral-foreground-hint);
    border-top: 1px solid var(--neutral-stroke-divider-rest);
    background: var(--neutral-layer-1);
}

.app-footer a {
    color: inherit;
    text-decoration: none;
}

.app-footer a:hover {
    text-decoration: underline;
}

/* -----------------------------
   Empty layout (login / access-denied)
   ----------------------------- */
.empty-shell {
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    background: var(--neutral-layer-2);
    color: var(--neutral-foreground-rest);
}

.empty-shell__topbar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--neutral-stroke-divider-rest);
    background: var(--neutral-layer-1);
}

.empty-shell__content {
    flex: 1 1 auto;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: var(--space-6) var(--space-5);
}

.empty-shell__content-inner {
    width: 100%;
    max-width: 480px;
}

.empty-shell__footer {
    padding: var(--space-3) var(--space-6);
    font-size: 12px;
    color: var(--neutral-foreground-hint);
    display: flex;
    justify-content: space-between;
}

/* Hidden by default; revealed on mobile breakpoint */
.mobile-nav-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 60;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--neutral-stroke-divider-rest);
    background: var(--neutral-layer-1);
    color: var(--neutral-foreground-rest);
    box-shadow: var(--shadow-sm);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
}

.mobile-nav-toggle:hover {
    background: var(--neutral-layer-3);
}

.mobile-nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 40;
}

/* -----------------------------
   Mobile breakpoint
   ----------------------------- */
@media (max-width: 768px) {
    .mobile-nav-toggle {
        display: inline-flex;
    }

    .app-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        z-index: 50;
        height: 100dvh;
        width: 280px;
        transform: translateX(-100%);
        transition: transform 200ms ease;
        box-shadow: var(--shadow-lg);
    }

    .app-shell.is-mobile-open .app-sidebar {
        transform: translateX(0);
    }

    .app-shell.is-mobile-open .mobile-nav-backdrop {
        display: block;
    }

    .app-main {
        width: 100%;
    }

    .app-content {
        padding: 60px var(--space-4) var(--space-4);
    }

    .app-footer {
        padding: var(--space-3) var(--space-4);
    }
}