/*
 * Autofixa Design System — authenticated app shell layout (§4.1).
 * Sidebar + topbar + content area, mobile drawer. Cs.Agent.Web only —
 * Identity uses the separate split-screen auth.css layout instead.
 */

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

/* ---------- Sidebar ---------- */
.app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 260px;
    background: var(--surface-0);
    color: rgba(255, 255, 255, 0.85);
    display: flex;
    flex-direction: column;
    z-index: 1030;
    transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.app-sidebar.collapsed {
    width: 64px;
}

.app-sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 1.1rem 1.25rem;
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    text-decoration: none;
}

.app-sidebar-brand img {
    height: 24px;
    width: auto;
    flex-shrink: 0;
}

.app-sidebar-brand span {
    color: #fff;
    font-weight: 600;
    white-space: nowrap;
}

.app-sidebar.collapsed .app-sidebar-brand img,
.app-sidebar.collapsed .nav-label,
.app-sidebar.collapsed .sidebar-nav-group-label,
.app-sidebar.collapsed .sidebar-footer-info {
    display: none;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    position: relative;
    z-index: 1;
    padding: 0.5rem 0;
}

.sidebar-nav-group-label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.35);
    padding: 1rem 1.25rem 0.35rem;
}

.sidebar-nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.25rem;
    color: rgba(255, 255, 255, 0.52);
    text-decoration: none;
    border-left: 3px solid transparent;
    font-size: var(--text-sm);
    white-space: nowrap;
}

.sidebar-nav-link .nav-icon {
    color: var(--teal-tint-60);
    width: 1.1em;
    text-align: center;
    flex-shrink: 0;
}

.sidebar-nav-link:hover {
    color: var(--teal);
}

.sidebar-nav-link:hover .nav-icon {
    color: var(--teal);
}

.sidebar-nav-link.active {
    color: #fff;
    border-left-color: var(--accent-color);
    background: rgba(255, 255, 255, 0.03);
}

.sidebar-nav-link.active .nav-icon {
    color: var(--accent-color);
}

.sidebar-footer {
    position: relative;
    z-index: 1;
    padding: 0.9rem 1.25rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    gap: 0.625rem;
    flex-shrink: 0;
}

.sidebar-footer-info {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.sidebar-footer-email {
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--text-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
}

.sidebar-footer form {
    flex-shrink: 0;
}

.sidebar-footer .btn-icon {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.6);
}

.sidebar-footer .btn-icon:hover {
    color: var(--teal);
    border-color: var(--teal);
}

.sidebar-collapse-toggle {
    background: transparent;
    border: none;
    color: rgba(255, 255, 255, 0.4);
    padding: 0.5rem 1.25rem;
    text-align: left;
    font-size: var(--text-sm);
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.sidebar-collapse-toggle:hover {
    color: var(--teal);
}

/* ---------- Topbar ---------- */
.app-main {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.app-shell.sidebar-collapsed .app-main {
    margin-left: 64px;
}

.app-topbar {
    height: 60px;
    background: #fafbfc;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1020;
    position: relative;
}

.app-topbar::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 2px;
    background: linear-gradient(90deg, var(--teal), transparent);
}

.app-topbar-title {
    font-weight: 600;
    color: var(--primary-color);
}

.app-topbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    font-size: 1.25rem;
    color: var(--primary-color);
}

.app-content {
    flex: 1;
    background: var(--light-bg);
    padding: 2rem;
}

/* ---------- Mobile drawer (<=1024px) ---------- */
@media (max-width: 1024px) {
    .app-sidebar {
        width: 260px;
        transform: translateX(-100%);
        transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

    .app-sidebar.collapsed {
        width: 260px;
    }

    .app-sidebar.collapsed .app-sidebar-brand img,
    .app-sidebar.collapsed .nav-label,
    .app-sidebar.collapsed .sidebar-nav-group-label,
    .app-sidebar.collapsed .sidebar-footer-info {
        display: initial;
    }

    .app-main,
    .app-shell.sidebar-collapsed .app-main {
        margin-left: 0;
    }

    .sidebar-mobile-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .sidebar-collapse-toggle {
        display: none;
    }

    .sidebar-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(6, 25, 44, 0.5);
        z-index: 1025;
    }

    .sidebar-backdrop.visible {
        display: block;
    }
}

@media (max-width: 768px) {
    .app-content {
        padding: 1.25rem;
    }
}