/* =====================================================================
   UniCRM LAYOUT SHELL — sidebar / topbar / main / footer / page frame
   Loaded after app.min.css so it can override the compat shim cleanly.
   ===================================================================== */

:root { --sidebar-w: 64px; --sidebar-w-open: 260px; --topbar-h: 48px; }
html.sidebar-expanded { --sidebar-w: var(--sidebar-w-open); }

body.app-shell { display: flex; flex-direction: column; min-height: 100vh; padding-top: 0; }
@media (min-width: 768px) {
    body.app-shell { padding-top: 0; }
    .app-main, .app-footer {
        padding-left: var(--sidebar-w);
        transition: padding-left var(--duration-base) var(--ease-industrial);
    }
    html.sidebar-expanded .app-main,
    html.sidebar-expanded .app-footer { padding-left: var(--sidebar-w-open); }
}

/* ---------- Top bar (mobile only) ---------- */
.app-topbar { display: none; }
@media (max-width: 767.98px) {
    body.app-shell { padding-top: var(--topbar-h); }
    .app-topbar {
        display: block; position: fixed; top: 0; left: 0; right: 0; height: var(--topbar-h);
        background: var(--c-ink); color: var(--c-paper);
        border-bottom: 1px solid var(--c-rule);
        z-index: 1040;
    }
    .app-topbar__inner {
        display: grid; grid-template-columns: 48px 1fr auto;
        align-items: center; height: 100%; padding: 0 0.75rem; gap: 0.75rem;
    }
    .app-topbar__hamburger {
        background: none; border: none; color: inherit; cursor: pointer;
        width: 32px; height: 32px;
        display: inline-flex; flex-direction: column; justify-content: center; align-items: center; gap: 4px;
    }
    .app-topbar__hamburger span { display: block; width: 18px; height: 2px; background: var(--c-paper); }
    .app-topbar__brand { display: inline-flex; align-items: center; gap: 0.5rem; color: inherit; text-decoration: none; border: none; }
    .app-topbar__logo {
        display: inline-flex; align-items: center; justify-content: center;
        width: 28px; height: 28px;
        background: var(--c-accent); color: var(--c-accent-ink);
        font-family: var(--font-mono); font-weight: 700; font-size: 0.75rem;
        border: 1px solid var(--c-accent);
    }
    .app-topbar__name { font-family: var(--font-display); font-weight: 600; letter-spacing: 0.04em; }
    .app-topbar__ver { font-family: var(--font-mono); font-size: 0.65rem; color: var(--c-muted); }
    .app-topbar__clock { font-family: var(--font-mono); font-size: 0.75rem; color: var(--c-accent); }
}

/* ---------- Sidebar ---------- */
.sidebar {
    position: fixed; top: 0; left: 0; bottom: 0; width: var(--sidebar-w);
    background: var(--c-paper-raised); border-right: 1px solid var(--c-rule);
    z-index: 1050; overflow-x: hidden; overflow-y: auto;
    display: flex; flex-direction: column;
    transition: width var(--duration-base) var(--ease-industrial), transform var(--duration-base) var(--ease-industrial);
}
.sidebar__hd {
    display: flex; align-items: center; justify-content: space-between;
    padding: 0.5rem; border-bottom: 1px solid var(--c-rule); min-height: 48px;
}
.sidebar__toggle {
    background: none; border: 1px solid transparent; color: var(--c-muted); cursor: pointer;
    width: 32px; height: 32px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--radius-hair);
    transition: all var(--duration-fast) var(--ease-industrial);
}
.sidebar__toggle:hover { color: var(--c-ink); border-color: var(--c-rule-soft); background: var(--c-surface-sunk); }
.sidebar__toggle .mobile-icon { display: none; }
@media (max-width: 767.98px) {
    .sidebar__toggle .desktop-icon { display: none; }
    .sidebar__toggle .mobile-icon { display: inline-block; }
}

.sidebar__nav { flex: 1 1 auto; overflow-y: auto; }
.sidebar-nav, .sidebar-nav ul { list-style: none; padding: 0; margin: 0; }

/* Navigation hierarchy */
.nav-item-primary .sidebar-link {
    padding: 0.75rem 0.875rem;
    font-weight: 500;
    background: var(--c-surface-sunk);
    border-left: 3px solid var(--c-accent);
}

.nav-item-secondary .sidebar-link {
    padding: 0.55rem 0.875rem;
    font-weight: 400;
}

.nav-item-system .sidebar-link {
    padding: 0.375rem 0.875rem;
    font-size: var(--text-xs);
    color: var(--c-muted);
}

.sidebar-nav__spacer { margin-top: auto; height: 0; }
.sidebar__ft {
    padding: 0.5rem 0.75rem; border-top: 1px solid var(--c-rule);
    display: flex; justify-content: space-between; align-items: center;
}

.sidebar-link {
    display: flex; align-items: center; gap: 0.75rem;
    padding: 0.55rem 0.875rem;
    color: var(--c-ink-2); text-decoration: none; background: none; border: none;
    width: 100%; text-align: left; font-size: var(--text-sm); cursor: pointer;
    white-space: nowrap;
    transition: background var(--duration-fast) var(--ease-industrial), color var(--duration-fast) var(--ease-industrial);
    position: relative;
}
.sidebar-link:hover { background: var(--c-surface-sunk); color: var(--c-ink); border-bottom: none; }
.sidebar-link .nav-icon {
    font-size: 1.05rem; min-width: 1.5rem; text-align: center; flex-shrink: 0;
    color: var(--c-muted); transition: color var(--duration-fast) var(--ease-industrial);
}
.sidebar-link:hover .nav-icon,
.sidebar-link[aria-current="page"] .nav-icon { color: var(--c-accent); }
.sidebar-link .nav-label { opacity: 0; transition: opacity var(--duration-fast) var(--ease-industrial); pointer-events: none; }
html.sidebar-expanded .sidebar-link .nav-label { opacity: 1; pointer-events: auto; }

.sidebar-link[aria-current="page"]::before {
    content: ""; position: absolute; left: 0; top: 0; bottom: 0;
    width: 3px; background: var(--c-accent);
}
.sidebar-link[aria-current="page"] { color: var(--c-ink); background: var(--c-surface-sunk); }

.sidebar-link.level-0 { padding-left: 0.875rem; }
.sidebar-link.level-1 { padding-left: 1.75rem; }
.sidebar-link.level-2 { padding-left: 2.5rem; }
.sidebar-link.level-3 { padding-left: 3.25rem; }
.sidebar-link.level-4 { padding-left: 4rem; }

.dropdown-toggle-sidebar .bi-chevron-down {
    margin-left: auto; font-size: 0.7rem;
    transition: transform var(--duration-base) var(--ease-industrial);
}
.dropdown-toggle-sidebar[aria-expanded="true"] .bi-chevron-down { transform: rotate(180deg); }

@media (max-width: 767.98px) {
    .sidebar { transform: translateX(-100%); width: 280px !important; }
    .sidebar.open { transform: translateX(0); box-shadow: 4px 0 0 0 var(--c-rule); }
    .sidebar .sidebar-link .nav-label { opacity: 1 !important; pointer-events: auto !important; }
}

/* ---------- Main / Footer / Page frame ---------- */
.app-main {
    flex: 1 1 auto; padding: 0.75rem; min-width: 0;
    display: flex; flex-direction: column;
}
@media (min-width: 768px) { .app-main { padding: 1rem 1.25rem; } }

.app-footer {
    border-top: 1px solid var(--c-rule);
    background: var(--c-paper-raised);
    padding: 0.5rem 1rem;
}
.app-footer__inner {
    display: flex; align-items: center; gap: 0.5rem;
    max-width: 1400px; margin: 0 auto;
}
.app-footer__divider { width: 1px; height: 12px; background: var(--c-rule-soft); }

.page {
    max-width: 1400px; width: 100%; margin: 0 auto;
    background: var(--c-paper-raised);
    border: 1px solid var(--c-rule);
    border-radius: var(--radius-hair);
    padding: 1.25rem;
    display: flex; flex-direction: column;
    min-width: 0;
}
@media (min-width: 768px) { .page { padding: 1.5rem; } }

.page__hd {
    display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem;
    padding-bottom: 0.875rem; margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--c-rule);
    flex-wrap: wrap;
}
.page__hd-index {
    font-family: var(--font-mono); font-size: var(--text-xs); color: var(--c-faint);
    letter-spacing: 0.1em; margin-bottom: 0.25rem;
}
.page__title {
    font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 600;
    margin: 0; color: var(--c-ink); letter-spacing: -0.01em; line-height: 1.1;
}
.page__subtitle { font-size: var(--text-sm); color: var(--c-muted); margin-top: 0.25rem; }
.page__actions { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }
.page__bd { min-width: 0; }

/* Touch-friendly improvements */
@media (max-width: 767.98px) {
    .btn {
        min-height: 44px;
        min-width: 44px;
        padding: 0.75rem 1rem;
    }
    
    .btn-sm {
        min-height: 40px;
        min-width: 40px;
        padding: 0.5rem 0.75rem;
    }
    
    .card-footer .btn {
        width: 100%;
        margin-bottom: 0.25rem;
    }
    
    .card-footer {
        flex-wrap: wrap;
    }
}

/* Mobile invite button positioning */
.btn-invite {
    position: fixed; bottom: 1.5rem; right: 6.25rem;
    min-width: 108px; height: 56px; border-radius: 999px;
    background: var(--c-accent); color: var(--c-accent-ink);
    border: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; box-shadow: 4px 4px 0 0 var(--c-rule);
    z-index: 1040; transition: transform 140ms var(--ease-industrial);
    gap: 0.4rem;
    padding: 0.75rem 1rem;
}
.btn-invite:hover { transform: scale(1.1); }
.btn-invite:active { transform: scale(1.0); }

@media (max-width: 767.98px) {
    .btn-invite {
        bottom: 5.25rem; right: 1rem;
        width: 50px; min-width: 50px; height: 50px; font-size: 1.25rem;
        border-radius: 50%;
        padding: 0.75rem;
    }
    .btn-invite__label { display: none; }
}

/* Data-grid — label/value pair list, used across components & pages */
.data-grid {
    display: grid;
    grid-template-columns: minmax(110px, max-content) 1fr;
    gap: 0.25rem 0.75rem;
    font-size: var(--text-sm);
    margin: 0;
}
.data-grid > dt {
    font-family: var(--font-sans);
    font-size: var(--text-micro);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--c-muted);
    padding: 0.25rem 0;
}
.data-grid > dd {
    margin: 0;
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--c-rule-faint);
    color: var(--c-ink-2);
    min-width: 0;
}
.data-grid > dd:last-of-type,
.data-grid > dt:nth-last-of-type(2) { border-bottom: none; }
.data-grid--3col { grid-template-columns: minmax(110px, max-content) 1fr 1fr; }