/* ============================================================================
   BusinessHub App-Hülle: Sidebar (Desktop), Topbar, Bottom-Tab-Bar + Drawer
   (Mobile), Hauptbereich, Auth-Seiten, Portal-Hülle.
   ============================================================================ */

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

/* ------------------------------------------------------------- Sidebar (≥ 769px) */
.sidebar {
    position: fixed; inset: 0 auto 0 0; width: var(--sidebar-w); z-index: var(--z-drawer);
    display: flex; flex-direction: column;
    background: var(--color-sidebar-bg); color: var(--color-sidebar-fg);
    border-right: 1px solid var(--color-sidebar-border);
    transform: translateX(-100%); transition: transform var(--dur-slow) var(--ease);
    padding-top: env(safe-area-inset-top);
}
.sidebar.is-open { transform: none; box-shadow: var(--shadow-lg); }
@media (min-width: 769px) { .sidebar { transform: none; z-index: var(--z-sticky); } }

.sidebar-header { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2); padding: var(--sp-4) var(--sp-4) var(--sp-3); min-height: var(--topbar-h); }
.brand { display: inline-flex; align-items: center; gap: var(--sp-3); color: inherit; text-decoration: none; font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 34px; height: 34px; flex-shrink: 0; }
.brand-name { line-height: 1; }
.brand-name small { display: block; font-size: 0.65rem; font-weight: 500; color: var(--color-sidebar-muted); letter-spacing: 0.08em; text-transform: uppercase; margin-top: 3px; }
.sidebar-close { display: inline-flex; width: 40px; height: 40px; align-items: center; justify-content: center; color: var(--color-sidebar-muted); border-radius: var(--r-sm); }
.sidebar-close:hover { background: var(--color-sidebar-hover); color: #fff; }
@media (min-width: 769px) { .sidebar-close { display: none; } }

.sidebar-nav { flex: 1; overflow-y: auto; padding: var(--sp-2) var(--sp-3) var(--sp-4); scrollbar-width: thin; }
.nav-section { margin-bottom: var(--sp-4); }
.nav-section-title { padding: var(--sp-2) var(--sp-3); font-size: var(--fs-2xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-sidebar-muted); }
.nav-link {
    display: flex; align-items: center; gap: var(--sp-3); padding: 0.6rem var(--sp-3); margin-bottom: 2px;
    border-radius: var(--r-sm); color: #d5dee8; font-weight: 500; font-size: var(--fs-base);
    border-left: 0; transition: background var(--dur-fast), color var(--dur-fast);
}
.nav-link .icon { width: 20px; height: 20px; color: var(--color-sidebar-muted); }
.nav-link svg:not(.icon) { width: 20px; height: 20px; opacity: 0.8; }
.nav-link:hover { background: var(--color-sidebar-hover); color: #fff; text-decoration: none; }
.nav-link.active { background: var(--color-sidebar-active); color: #fff; box-shadow: inset 3px 0 0 var(--color-accent); }
.nav-link.active .icon { color: var(--color-accent); }
.nav-link .nav-count { margin-left: auto; background: rgba(255,255,255,0.1); color: #fff; border-radius: var(--r-full); padding: 0 0.5em; font-size: var(--fs-2xs); font-weight: 600; }
.sidebar-footer { padding: var(--sp-3) var(--sp-4) calc(var(--sp-3) + env(safe-area-inset-bottom)); border-top: 1px solid var(--color-sidebar-border); font-size: var(--fs-xs); color: var(--color-sidebar-muted); display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2); }
.sidebar-footer a { color: var(--color-sidebar-muted); }
.sidebar-footer a:hover { color: #fff; }

/* Drawer-Backdrop (Mobile) */
.sidebar-overlay, .drawer-backdrop { position: fixed; inset: 0; background: var(--color-backdrop); z-index: var(--z-drawer-backdrop); opacity: 0; pointer-events: none; transition: opacity var(--dur-slow) var(--ease); }
.sidebar-overlay.active, .drawer-backdrop.is-open { opacity: 1; pointer-events: auto; }
@media (min-width: 769px) { .sidebar-overlay, .drawer-backdrop { display: none; } }

/* ------------------------------------------------------------- Hauptbereich */
.main-content {
    flex: 1; min-width: 0;
    padding: calc(var(--topbar-h) + var(--sp-4)) var(--sp-4) calc(var(--bottomnav-h) + var(--sp-6) + env(safe-area-inset-bottom));
}
@media (min-width: 769px) {
    .main-content { margin-left: var(--sidebar-w); padding: var(--sp-5) var(--sp-8) var(--sp-10); }
}
@media (min-width: 1280px) { .main-content { padding: var(--sp-6) var(--sp-10) var(--sp-12); } }
.content-inner { max-width: var(--content-max); margin: 0 auto; }
.content-narrow { max-width: 860px; }

/* ------------------------------------------------------------- Topbar */
.topbar {
    position: fixed; top: 0; left: 0; right: 0; height: calc(var(--topbar-h) + env(safe-area-inset-top)); z-index: var(--z-topbar);
    display: flex; align-items: center; gap: 0;
    padding: env(safe-area-inset-top) var(--sp-3) 0;
    background: var(--color-sidebar-bg); color: #fff; border-bottom: 1px solid var(--color-sidebar-border);
}
.topbar .brand { font-size: 1rem; }
.topbar .brand-mark { width: 30px; height: 30px; }
.topbar-spacer { flex: 1; }
.topbar-btn {
    position: relative; display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
    min-width: 42px; height: var(--touch); padding: 0 var(--sp-1); border-radius: var(--r-sm);
    color: #dbe4ee; background: transparent; border: 0; cursor: pointer; font-size: var(--fs-sm); font-weight: 500;
}
.topbar-btn:hover, .topbar-btn[aria-expanded="true"] { background: rgba(255,255,255,0.08); color: #fff; }
.topbar-btn .icon { width: 22px; height: 22px; }
.topbar-btn .user-avatar { width: 30px; height: 30px; }
.topbar-dot { position: absolute; top: 9px; right: 9px; width: 8px; height: 8px; border-radius: 50%; background: var(--color-accent); border: 2px solid var(--color-sidebar-bg); }
.topbar .menu-panel { color: var(--color-text); }

/* Desktop: Topbar wird zur schlanken Leiste im Inhaltsbereich */
@media (min-width: 769px) {
    .topbar {
        position: sticky; top: 0; left: auto; right: auto; width: auto; height: auto; min-height: 0; margin: calc(-1 * var(--sp-5)) calc(-1 * var(--sp-8)) var(--sp-5);
        padding: var(--sp-2) var(--sp-8); background: color-mix(in srgb, var(--color-bg) 85%, transparent); backdrop-filter: blur(10px);
        border-bottom: 1px solid var(--color-border); color: var(--color-text); z-index: var(--z-sticky);
    }
    .topbar .brand, .topbar .topbar-menu-btn { display: none; }
    .topbar-btn { color: var(--color-text-muted); height: 38px; min-width: 38px; }
    .topbar-btn:hover, .topbar-btn[aria-expanded="true"] { background: var(--color-surface-2); color: var(--color-text); }
    .topbar-dot { border-color: var(--color-bg); }
}
@media (min-width: 1280px) { .topbar { margin: calc(-1 * var(--sp-6)) calc(-1 * var(--sp-10)) var(--sp-6); padding: var(--sp-2) var(--sp-10); } }

/* Globale Suche */
.topbar-search { position: relative; display: none; }
@media (min-width: 769px) { .topbar-search { display: block; flex: 0 1 380px; } }
.topbar-search .form-control { min-height: 38px; padding-left: 2.25rem; background: var(--color-surface); }
.topbar-search .icon { position: absolute; left: 0.7rem; top: 50%; transform: translateY(-50%); color: var(--color-text-faint); width: 18px; height: 18px; pointer-events: none; }
/* Mobile: Suche als aufklappbare Zeile unter der Topbar */
.search-sheet { position: fixed; top: calc(var(--topbar-h) + env(safe-area-inset-top)); left: 0; right: 0; z-index: var(--z-topbar); padding: var(--sp-2) var(--sp-3) var(--sp-3); background: var(--color-sidebar-bg); border-bottom: 1px solid var(--color-sidebar-border); display: none; }
.search-sheet.is-open { display: block; }
.search-sheet .form-control { min-height: var(--touch); font-size: 16px; }
@media (min-width: 769px) { .search-sheet { display: none !important; } }

/* Aktivitäts-Popup: an Topbar andocken */
.activity-trigger-wrapper { position: static; }
@media (max-width: 768px) {
    .activity-popup { position: fixed !important; left: var(--sp-2) !important; right: var(--sp-2) !important; top: calc(var(--topbar-h) + env(safe-area-inset-top) + var(--sp-2)) !important; width: auto !important; max-width: none !important; max-height: 70dvh; }
}
@media (min-width: 769px) { .activity-trigger-wrapper { position: relative; } .activity-popup { z-index: var(--z-menu) !important; } }

/* ------------------------------------------------------------- Bottom-Tab-Bar (Mobile) */
.bottom-nav {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: var(--z-bottomnav);
    display: grid; grid-template-columns: repeat(5, 1fr);
    height: calc(var(--bottomnav-h) + env(safe-area-inset-bottom)); padding-bottom: env(safe-area-inset-bottom);
    background: var(--color-surface); border-top: 1px solid var(--color-border); box-shadow: 0 -4px 16px rgba(15,27,41,0.06);
}
html[data-theme="dark"] .bottom-nav { box-shadow: 0 -4px 16px rgba(0,0,0,0.4); }
.bottom-nav a, .bottom-nav button {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
    color: var(--color-text-muted); font-size: 0.6875rem; font-weight: 500; text-decoration: none; min-height: var(--bottomnav-h);
    background: transparent; border: 0; cursor: pointer; position: relative;
}
.bottom-nav a:hover, .bottom-nav button:hover { text-decoration: none; }
.bottom-nav .icon { width: 24px; height: 24px; }
.bottom-nav .active { color: var(--color-primary); }
.bottom-nav .active::before { content: ''; position: absolute; top: 0; width: 28px; height: 3px; border-radius: 0 0 3px 3px; background: var(--color-accent); }
html[data-theme="dark"] .bottom-nav .active { color: var(--color-accent-text); }
@media (min-width: 769px) { .bottom-nav { display: none; } }

/* Legacy: FAB und alter Mobile-Header entfallen */
.fab, .mobile-header { display: none !important; }

/* ------------------------------------------------------------- Flash / Sticky-Aktionsleiste */
.sticky-actions {
    position: sticky; bottom: calc(var(--bottomnav-h) + env(safe-area-inset-bottom)); z-index: var(--z-sticky);
    display: flex; gap: var(--sp-2); flex-wrap: wrap; padding: var(--sp-3) var(--sp-4); margin: var(--sp-4) calc(-1 * var(--sp-4)) 0;
    background: color-mix(in srgb, var(--color-surface) 92%, transparent); backdrop-filter: blur(8px); border-top: 1px solid var(--color-border);
}
@media (min-width: 769px) { .sticky-actions { bottom: 0; margin: var(--sp-6) 0 0; border-radius: var(--r); border: 1px solid var(--color-border); } }
.sticky-actions .btn { flex: 1 1 auto; }
@media (min-width: 769px) { .sticky-actions .btn { flex: 0 0 auto; } .sticky-actions .btn-primary { margin-left: auto; } }

/* ------------------------------------------------------------- Auth-Seiten (Login, Reset, Einladung, Portal-Login, Angebots-Login) */
.auth-page, .login-page { min-height: 100dvh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: var(--sp-6) var(--sp-4); background: var(--color-bg); }
.auth-page::before, .login-page::before {
    content: ''; position: fixed; inset: 0; z-index: -1;
    background:
        radial-gradient(60% 50% at 20% 10%, var(--brand-cyan-glow), transparent 70%),
        radial-gradient(50% 40% at 85% 90%, rgba(27,44,64,0.12), transparent 70%);
}
.auth-brand { display: flex; flex-direction: column; align-items: center; gap: var(--sp-3); margin-bottom: var(--sp-6); text-align: center; }
.auth-brand .brand-mark { width: 56px; height: 56px; }
.auth-brand h1 { font-size: var(--fs-2xl); font-weight: 700; letter-spacing: -0.02em; }
.auth-brand p { color: var(--color-text-muted); font-size: var(--fs-sm); }
.auth-card { width: 100%; max-width: 420px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--r-lg); box-shadow: var(--shadow-md); padding: var(--sp-6); }
.auth-card .btn-block { margin-top: var(--sp-2); }
.auth-footer { margin-top: var(--sp-5); text-align: center; font-size: var(--fs-sm); color: var(--color-text-muted); }
.auth-footer a { display: inline-flex; align-items: center; gap: var(--sp-1); }
.auth-credit { margin-top: var(--sp-8); font-size: var(--fs-xs); color: var(--color-text-faint); display: flex; align-items: center; gap: var(--sp-2); }
.auth-credit img { height: 14px; width: auto; opacity: 0.8; }
/* Legacy-Klassen der alten Login-Seite */
.login-card { max-width: 420px; }

/* ------------------------------------------------------------- Portal-Hülle (Kunden) */
.portal-page { min-height: 100dvh; display: flex; flex-direction: column; background: var(--color-bg); }
.portal-header {
    position: sticky; top: 0; z-index: var(--z-topbar);
    display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); flex-wrap: wrap;
    padding: var(--sp-3) var(--sp-4); background: var(--color-surface); border-bottom: 1px solid var(--color-border);
}
.portal-header .brand { color: var(--color-text); }
.portal-header .brand-mark { width: 30px; height: 30px; }
.portal-user { color: var(--color-text-muted); font-size: var(--fs-sm); }
.portal-header-actions { display: flex; align-items: center; gap: var(--sp-3); }
.portal-main { flex: 1; width: 100%; max-width: 1000px; margin: 0 auto; padding: var(--sp-5) var(--sp-4) var(--sp-10); }
@media (min-width: 769px) { .portal-header { padding: var(--sp-3) var(--sp-8); } .portal-main { padding: var(--sp-8) var(--sp-8) var(--sp-12); } }
.portal-footer { padding: var(--sp-6) var(--sp-4); text-align: center; font-size: var(--fs-xs); color: var(--color-text-faint); }
.portal-footer a { color: inherit; }

/* Push-Toggle: SVG-Zustände */
.push-toggle-icon [data-on], .push-toggle-icon [data-off] { display: none; }
.push-toggle-icon[data-state="on"] [data-on] { display: inline; }
.push-toggle-icon:not([data-state="on"]) [data-off] { display: inline; }

/* Sehr schmale Geräte: Wortmarke in der Topbar ausblenden, Marke bleibt */
@media (max-width: 400px) { .topbar .brand-name { display: none; } }
@media (min-width: 769px) { .topbar { gap: var(--sp-2); } }

/* Noch nicht migrierte Seiten dürfen die Seite nie verbreitern (sonst zoomt Mobile heraus, Fixed-Elemente verrutschen) */
.main-content, .content-inner { overflow-x: clip; }
.user-menu-email { padding: 0 0.75rem 0.5rem; }