/* BOS Navigationssystem – Version 1.0 · Sprint 2 */

/* --- Kopfzeile --- */
.app-header {
  height: var(--header-height);
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-3);
  z-index: 20;
  flex-shrink: 0;
}

/* Hamburger / Mobile-Menü-Schaltfläche */
.mobile-menu-btn {
  display: none;
  width: 36px; height: 36px;
  align-items: center; justify-content: center;
  border-radius: var(--radius-md);
  border: none; background: transparent;
  cursor: pointer; color: var(--color-text-secondary);
  transition: background var(--duration-fast);
  flex-shrink: 0;
}
.mobile-menu-btn:hover { background: var(--color-bg-subtle); }
.mobile-menu-btn svg { width: 20px; height: 20px; }

/* Logo */
.header-logo {
  display: flex; align-items: center; gap: var(--space-2);
  text-decoration: none; flex-shrink: 0;
}
.header-logo img { width: 24px; height: 24px; }
.header-logo-text {
  font-size: var(--text-sm); font-weight: var(--font-semibold);
  color: var(--color-text-primary); white-space: nowrap;
}

/* Kontextwechsler */
.ctx-switcher { position: relative; margin-left: var(--space-2); }

.ctx-btn {
  display: flex; align-items: center; gap: var(--space-2);
  height: 32px; padding: 0 var(--space-3);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-sans); font-size: var(--text-sm); font-weight: var(--font-medium);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: background var(--duration-fast), border-color var(--duration-fast);
}
.ctx-btn:hover { background: var(--color-bg-hover); border-color: var(--color-border-strong); }
.ctx-btn svg { width: 13px; height: 13px; color: var(--color-text-tertiary); }

.header-spacer { flex: 1; }

/* Suchfeld */
.header-search-btn {
  display: flex; align-items: center; gap: var(--space-2);
  height: 32px; padding: 0 var(--space-3);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-sans); font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  cursor: pointer;
  transition: background var(--duration-fast), border-color var(--duration-fast);
  min-width: 200px;
}
.header-search-btn:hover { background: var(--color-bg-hover); border-color: var(--color-border-strong); }
.header-search-btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.search-shortcut-hint { margin-left: auto; display: flex; align-items: center; gap: 2px; }

/* Benachrichtigungen */
.notif-wrap { position: relative; }
.notif-badge {
  position: absolute; top: -4px; right: -4px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--color-error); color: #fff;
  font-size: 10px; font-weight: var(--font-bold);
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--color-bg-surface);
  pointer-events: none;
}

/* Benutzer-Schaltfläche */
.user-btn {
  display: flex; align-items: center; gap: var(--space-2);
  height: 32px; padding: 0 var(--space-2);
  background: transparent; border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--duration-fast);
  font-family: var(--font-sans);
}
.user-btn:hover { background: var(--color-bg-subtle); }

.user-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--color-accent); color: #fff;
  font-size: var(--text-xs); font-weight: var(--font-semibold);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.user-name {
  font-size: var(--text-sm); font-weight: var(--font-medium);
  color: var(--color-text-primary);
}

/* Klapplisten */
.dropdown {
  position: absolute;
  top: calc(100% + 6px); right: 0;
  min-width: 220px;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 30;
  padding: var(--space-2);
  animation: bDropdown var(--duration-normal) var(--ease-out);
}

@keyframes bDropdown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.dropdown-head {
  padding: var(--space-3) var(--space-3) var(--space-2);
}
.dropdown-head-name  { font-size: var(--text-sm); font-weight: var(--font-medium); color: var(--color-text-primary); }
.dropdown-head-email { font-size: var(--text-xs); color: var(--color-text-secondary); margin-top: 2px; }

.dropdown-item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm); color: var(--color-text-primary);
  cursor: pointer;
  transition: background var(--duration-fast);
  border: none; background: none;
  width: 100%; text-align: left;
  font-family: var(--font-sans); line-height: var(--leading-normal);
}
.dropdown-item:hover { background: var(--color-bg-subtle); }
.dropdown-item.danger { color: var(--color-error); }
.dropdown-item.danger:hover { background: var(--color-error-bg); }
.dropdown-item svg { width: 14px; height: 14px; color: var(--color-text-tertiary); flex-shrink: 0; }
.dropdown-item.danger svg { color: var(--color-error); }

.dropdown-divider { height: 1px; background: var(--color-border); margin: var(--space-2) 0; }

.dropdown-section-label {
  font-size: var(--text-xs); font-weight: var(--font-medium);
  color: var(--color-text-tertiary);
  padding: var(--space-2) var(--space-3) var(--space-1);
  text-transform: uppercase; letter-spacing: 0.05em;
}

/* --- Seitenleiste --- */
.app-sidebar {
  width: var(--sidebar-width);
  background: var(--color-sidebar-bg);
  display: flex; flex-direction: column;
  overflow: hidden; flex-shrink: 0;
  z-index: 10;
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) var(--space-2);
  scrollbar-width: thin;
  scrollbar-color: var(--color-sidebar-hover) transparent;
}
.sidebar-scroll::-webkit-scrollbar { width: 4px; }
.sidebar-scroll::-webkit-scrollbar-track { background: transparent; }
.sidebar-scroll::-webkit-scrollbar-thumb { background: var(--color-sidebar-hover); border-radius: 2px; }

.sidebar-section-label {
  font-size: var(--text-xs); font-weight: var(--font-medium);
  color: var(--color-sidebar-section);
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: var(--space-2) var(--space-3) var(--space-1);
  margin-top: var(--space-3);
}
.sidebar-section-label:first-child { margin-top: 0; }

.sidebar-item {
  display: flex; align-items: center; gap: var(--space-2);
  height: 36px; padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm); font-weight: var(--font-medium);
  color: var(--color-sidebar-text);
  cursor: pointer;
  transition: background var(--duration-fast), color var(--duration-fast);
  border: none; background: none;
  width: 100%; text-align: left;
  font-family: var(--font-sans);
  position: relative;
}
.sidebar-item:hover {
  background: var(--color-sidebar-hover);
  color: var(--color-sidebar-active);
}
.sidebar-item.active {
  background: var(--color-sidebar-hover);
  color: var(--color-sidebar-active);
}
.sidebar-item.active::before {
  content: '';
  position: absolute; left: 0; top: 6px; bottom: 6px;
  width: 3px;
  background: var(--color-sidebar-accent);
  border-radius: 0 2px 2px 0;
}
.sidebar-item svg { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.6; }
.sidebar-item:hover svg,
.sidebar-item.active svg { opacity: 1; }

.sidebar-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: var(--space-2);
  flex-shrink: 0;
  position: relative;
}

.dropdown-sidebar-user {
  bottom: calc(100% + var(--space-2));
  top: auto;
  left: var(--space-2);
  right: var(--space-2);
  min-width: 0;
}
.sidebar-user {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--duration-fast);
}
.sidebar-user:hover { background: var(--color-sidebar-hover); }
.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name {
  font-size: var(--text-sm); font-weight: var(--font-medium);
  color: var(--color-sidebar-active);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-user-role {
  font-size: var(--text-xs); color: var(--color-sidebar-text);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* --- Orientierungszeile --- */
.breadcrumb {
  display: flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-sm); color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}
.breadcrumb-link {
  color: var(--color-text-secondary); text-decoration: none;
  transition: color var(--duration-fast);
}
.breadcrumb-link:hover { color: var(--color-text-primary); text-decoration: none; }
.breadcrumb-sep { color: var(--color-text-tertiary); user-select: none; }
.breadcrumb-current { color: var(--color-text-primary); font-weight: var(--font-medium); }

/* --- Mobile --- */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 9;
}

@media (max-width: 1023px) {
  .app-sidebar {
    position: fixed; top: 0; left: 0; height: 100%;
    width: var(--sidebar-width);
    transform: translateX(-100%);
    transition: transform var(--duration-slow) var(--ease-out);
    z-index: 40;
  }
  .app-sidebar.open { transform: translateX(0); }
  .sidebar-overlay.visible { display: block; }
  .mobile-menu-btn { display: flex; }
  .header-search-btn .header-search-label,
  .header-search-btn .search-shortcut-hint { display: none; }
  .header-search-btn { min-width: 36px; justify-content: center; padding: 0 var(--space-2); }
}

@media (max-width: 767px) {
  .user-name { display: none; }
  .app-header { padding: 0 var(--space-4); gap: var(--space-2); }
}