/* App shell layout */
#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform var(--transition);
  z-index: 100;
}

.sidebar-header {
  padding: 20px 16px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 500;
  color: #fff;
}

.sidebar-logo .material-symbols-outlined {
  font-size: 28px;
  color: var(--primary);
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

.nav-section-label {
  padding: 16px 16px 4px;
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: rgba(255,255,255,0.45);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  color: var(--sidebar-text);
  cursor: pointer;
  transition: background var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-size: 14px;
}

.nav-item:hover { background: rgba(255,255,255,0.08); }
.nav-item.active {
  background: var(--sidebar-active);
  color: #fff;
  border-left: 3px solid var(--primary);
  padding-left: 13px;
}

.nav-item.disabled {
  opacity: 0.4;
  pointer-events: none;
}

.nav-item .material-symbols-outlined { font-size: 20px; opacity: 0.85; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 11px;
  color: rgba(255,255,255,0.4);
}

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

/* Topbar */
.topbar {
  height: var(--topbar-height);
  background: var(--surface);
  border-bottom: 1px solid var(--outline);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  flex-shrink: 0;
}

.topbar-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-md);
  color: var(--secondary);
}

.topbar-menu-btn:hover { background: var(--surface-variant); }

.page-title {
  font-size: 18px;
  font-weight: 500;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--surface-variant);
  border: 1px solid var(--outline);
  border-radius: var(--radius-md);
  color: var(--secondary);
  cursor: pointer;
  font-size: 13px;
  min-width: 200px;
}

.search-trigger kbd {
  margin-left: auto;
  font-size: 11px;
  padding: 1px 5px;
  border: 1px solid var(--outline);
  border-radius: 3px;
  background: var(--surface);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-radius: var(--radius-md);
  cursor: default;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 500;
}

.user-info { line-height: 1.3; }
.user-name { font-size: 13px; font-weight: 500; }
.user-role { font-size: 11px; color: var(--secondary); }

/* Content */
.content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

/* Loading & auth screens */
.loading-screen, .auth-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  gap: 16px;
  background: var(--surface-variant);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--outline);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Sidebar overlay (mobile) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 99;
}

.sidebar-overlay.active { display: block; }

/* Bottom nav (mobile) */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 56px;
  background: var(--surface);
  border-top: 1px solid var(--outline);
  z-index: 100;
}

.bottom-nav-inner {
  display: flex;
  height: 100%;
}

.bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: none;
  border: none;
  color: var(--secondary);
  font-size: 10px;
  cursor: pointer;
  padding: 4px;
}

.bottom-nav-item.active { color: var(--primary); }
.bottom-nav-item .material-symbols-outlined { font-size: 22px; }

/* If icon ligatures fail, hide text fallbacks globally */
.icon-fallback .material-symbols-outlined {
  display: none !important;
}

.icon-fallback .nav-item,
.icon-fallback .sidebar-logo {
  gap: 8px;
}

/* Responsive */
@media (max-width: 1024px) {
  .search-trigger { min-width: 140px; }
  .search-trigger kbd { display: none; }
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    transform: translateX(-100%);
    z-index: 200;
  }
  .sidebar.open { transform: translateX(0); }
  .main-area {
    width: 100%;
    flex: 1;
    min-width: 0;
  }
  .topbar-menu-btn { display: flex; }
  .content { padding: 16px; padding-bottom: calc(72px + env(safe-area-inset-bottom, 0px)); }
  .bottom-nav {
    display: block;
    padding-bottom: env(safe-area-inset-bottom, 0px);
    height: calc(56px + env(safe-area-inset-bottom, 0px));
  }
  .search-trigger { display: none; }
  .topbar-search-mobile { display: flex; }
  .user-info { display: none; }
  .content.page-loading { opacity: 0.6; pointer-events: none; }
}

.topbar-search-mobile {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-md);
  color: var(--secondary);
}

.topbar-search-mobile:hover { background: var(--surface-variant); }

.content.page-loading {
  transition: opacity 0.15s ease;
}

@media (min-width: 769px) and (max-width: 1024px) {
  :root { --sidebar-width: 64px; }
  .sidebar .nav-item span:not(.material-symbols-outlined),
  .sidebar .nav-section-label,
  .sidebar-logo span:not(.material-symbols-outlined),
  .sidebar-footer { display: none; }
  .nav-item { justify-content: center; padding: 12px; }
  .sidebar-header { padding: 16px 8px; justify-content: center; }
}