/* Cleanex design system — application shell layout (sidebar / topbar / content / footer)
   and responsive behavior for desktop, tablet and mobile. */

body.app-shell {
    display: flex;
    min-height: 100vh;
}

/* ---------- Sidebar ---------- */
.app-sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--color-sidebar-bg);
    color: var(--color-sidebar-text);
    display: flex;
    flex-direction: column;
    transition: width .15s ease;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1030;
}

body.sidebar-collapsed .app-sidebar { width: var(--sidebar-width-collapsed); }
body.sidebar-collapsed .sidebar-brand-text,
body.sidebar-collapsed .menu-text,
body.sidebar-collapsed .menu-caret { display: none; }
body.sidebar-collapsed .submenu { display: none !important; }

.sidebar-brand { padding: var(--space-5) var(--space-4); display: flex; align-items: center; gap: var(--space-2); }
.sidebar-brand-link { display: flex; align-items: center; gap: var(--space-2); color: #fff; font-weight: 700; letter-spacing: .04em; }
.sidebar-brand-link:hover { color: #fff; text-decoration: none; }
.sidebar-brand-mark {
    width: 32px; height: 32px; border-radius: var(--radius-sm);
    background: var(--color-primary); display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}

.sidebar-nav { flex: 1; padding: var(--space-2) 0 var(--space-6); }
.sidebar-menu { list-style: none; margin: 0; padding: 0; }

.menu-item { margin: 2px var(--space-3); }
.menu-link {
    display: flex; align-items: center; gap: var(--space-3);
    padding: var(--space-3) var(--space-3);
    border-radius: var(--radius-sm);
    color: var(--color-sidebar-text);
    font-size: var(--font-size-sm);
    cursor: pointer;
}
.menu-link:hover { background: rgba(255,255,255,.06); color: #fff; text-decoration: none; }
.menu-item.active > .menu-link, .menu-link.active {
    background: var(--color-sidebar-bg-active);
    color: var(--color-sidebar-text-active);
}
.menu-icon { width: 18px; text-align: center; flex-shrink: 0; }
.menu-caret { margin-left: auto; font-size: .7rem; transition: transform .15s ease; }
.menu-link[aria-expanded="true"] .menu-caret { transform: rotate(180deg); }

.submenu { list-style: none; margin: 0; padding: 0 0 0 var(--space-5); }
.submenu .menu-link { font-size: var(--font-size-sm); padding-top: var(--space-2); padding-bottom: var(--space-2); }

.app-sidebar-backdrop { display: none; }

/* ---------- Main column ---------- */
.app-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.app-topbar {
    height: var(--topbar-height);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky; top: 0; z-index: 1020;
}
.topbar-inner { height: 100%; display: flex; align-items: center; gap: var(--space-4); padding: 0 var(--space-5); }
.topbar-toggle {
    border: 0; background: transparent; font-size: 1.1rem; color: var(--color-text);
    width: 36px; height: 36px; border-radius: var(--radius-sm); cursor: pointer;
}
.topbar-toggle:hover { background: var(--color-bg); }
.topbar-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 260px;
}
.topbar-spacer { flex: 1; }
.topbar-actions { display: flex; align-items: center; gap: var(--space-4); }
.topbar-icon-btn { color: var(--color-text-muted); font-size: 1.05rem; cursor: pointer; }
.branch-badge {
    font-size: var(--font-size-sm); color: var(--color-text-muted);
    background: var(--color-bg); border-radius: var(--radius-sm); padding: var(--space-1) var(--space-3);
    white-space: nowrap;
}

.user-menu-toggle {
    border: 0; background: transparent; display: flex; align-items: center; gap: var(--space-2);
    padding: var(--space-2); border-radius: var(--radius-sm); cursor: pointer;
}
.user-menu-toggle:hover { background: var(--color-bg); }
.user-avatar {
    width: 30px; height: 30px; border-radius: 50%; background: var(--color-primary-soft); color: var(--color-primary);
    display: flex; align-items: center; justify-content: center; font-size: .8rem;
}
.user-caret { font-size: .65rem; color: var(--color-text-muted); }

.app-content { padding: var(--space-5); flex: 1; }
.page-header { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-5); flex-wrap: wrap; }
.app-footer { padding: var(--space-4) var(--space-5); border-top: 1px solid var(--color-border); color: var(--color-text-muted); font-size: var(--font-size-sm); }

/* ---------- Public (unauthenticated) shell ---------- */
.public-header { background: var(--color-surface); border-bottom: 1px solid var(--color-border); }
.public-header-inner { max-width: 1140px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: var(--space-4) var(--space-5); }
.public-brand { font-weight: 700; font-size: 1.2rem; color: var(--color-primary); }
.public-link-btn { border: 0; background: var(--color-primary); color: #fff; padding: var(--space-2) var(--space-4); border-radius: var(--radius-sm); cursor: pointer; }
.public-main { max-width: 1140px; margin: 0 auto; padding: var(--space-6) var(--space-5); min-height: 60vh; }
.public-footer { text-align: center; padding: var(--space-4); color: var(--color-text-muted); font-size: var(--font-size-sm); }
.public-nav { display: flex; align-items: center; gap: var(--space-3); }
.public-footer-links a { color: var(--color-text-muted); margin: 0 var(--space-2); }
.public-footer-geo { display: none; }

/* ---------- Responsive ---------- */

/* Tablet: sidebar collapses to an icon rail by default.
   Scoped to (min-width: 768px) so it doesn't overlap the mobile off-canvas breakpoint below -
   without this, this block's ".submenu { display: none !important; }" and the mobile block's
   ".submenu.show { display: block !important; }" both matched at mobile widths, and this block's
   extra "body" element in its selector made it win the specificity tie, permanently hiding
   submenus (and breaking their expand/collapse) on phones even though desktop worked fine. */
@media (min-width: 768px) and (max-width: 991.98px) {
    body.app-shell:not(.sidebar-collapsed) .app-sidebar { width: var(--sidebar-width-collapsed); }
    body.app-shell:not(.sidebar-collapsed) .sidebar-brand-text,
    body.app-shell:not(.sidebar-collapsed) .menu-text,
    body.app-shell:not(.sidebar-collapsed) .menu-caret { display: none; }
    body.app-shell:not(.sidebar-collapsed) .submenu { display: none !important; }
}

/* Mobile: sidebar becomes an off-canvas overlay */
@media (max-width: 767.98px) {
    .app-sidebar {
        position: fixed; left: 0; top: 0; width: 260px !important;
        transform: translateX(-100%);
        transition: transform .2s ease;
    }
    .app-sidebar.open { transform: translateX(0); }
    .app-sidebar .sidebar-brand-text, .app-sidebar .menu-text, .app-sidebar .menu-caret { display: inline !important; }
    .app-sidebar .submenu.show { display: block !important; }
    .app-sidebar-backdrop {
        display: none; position: fixed; inset: 0; background: rgba(16,25,47,.45); z-index: 1025;
    }
    .app-sidebar-backdrop.show { display: block; }
    .app-content { padding: var(--space-4); }
    .topbar-inner { padding: 0 var(--space-3); }
    .topbar-title { max-width: 130px; font-size: .9rem; }
    .page-header { align-items: flex-start; }
}