/* === App Shell === */
.app {
  display: flex;
  min-height: 100vh;
  background: var(--color-bg);
  overflow-x: hidden;
}

/* === Sidebar === */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: var(--z-sticky);
  transition: width var(--transition-base);
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  height: var(--topbar-height);
  padding: 0 var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.brand-text {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
}

.brand-text span {
  color: var(--color-primary-light);
  font-weight: var(--font-regular);
}

.sidebar.collapsed .brand-text {
  opacity: 0;
  width: 0;
}

.sidebar-toggle {
  margin-left: auto;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  padding: var(--space-1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-toggle:hover {
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.sidebar.collapsed .sidebar-toggle {
  margin-left: 0;
}

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) var(--space-2);
}

.nav-section {
  margin-bottom: var(--space-3);
}

.nav-section-title {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  white-space: nowrap;
  overflow: hidden;
}

.sidebar.collapsed .nav-section-title {
  opacity: 0;
  height: 0;
  padding: 0;
  margin: 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  margin-bottom: 2px;
}

.nav-item svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.nav-item:hover {
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.nav-item.active {
  background: var(--color-primary-subtle);
  color: var(--color-primary-light);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--color-primary);
  border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

.nav-label {
  white-space: nowrap;
  overflow: hidden;
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.sidebar.collapsed .nav-label,
.sidebar.collapsed .nav-badge {
  opacity: 0;
  width: 0;
  display: none;
}

.sidebar.collapsed .nav-item {
  justify-content: center;
  padding: var(--space-2);
}

.nav-badge {
  margin-left: auto;
  background: var(--color-danger-subtle);
  color: var(--color-danger);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  padding: 1px 6px;
  border-radius: var(--radius-full);
}

.sidebar-footer {
  padding: var(--space-3);
  border-top: 1px solid var(--color-border);
}

.plant-selector {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.plant-selector:hover {
  background: var(--color-surface-hover);
}

.sidebar.collapsed .plant-selector {
  justify-content: center;
  padding: var(--space-2);
}

.sidebar.collapsed .plant-selector span {
  display: none;
}

/* === Main Area === */
.main {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition-base);
}

.sidebar.collapsed ~ .main {
  margin-left: var(--sidebar-collapsed);
}

/* === Topbar === */
.topbar {
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  position: sticky;
  top: 0;
  z-index: calc(var(--z-sticky) - 1);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.topbar-btn {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.topbar-btn:hover {
  background: var(--color-surface-muted);
  color: var(--color-text);
}

.notification-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  background: var(--color-danger);
  border-radius: 50%;
  border: 2px solid var(--color-surface);
}

.user-menu {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-2) var(--space-1) var(--space-1);
  background: var(--color-surface-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.user-menu:hover {
  background: var(--color-surface-hover);
}

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

.user-name {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* === Content === */
.content {
  flex: 1;
  padding: var(--space-5);
  max-width: var(--content-max-width);
}

.content-header {
  margin-bottom: var(--space-5);
}

/* === Quick Create === */
.quick-create {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* === Mobile Drawer Sidebar === */
.mobile-menu-btn {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text);
  padding: var(--space-2);
}

.mobile-search-btn {
  display: none;
}

.sidebar-backdrop {
  display: none;
}

body.nav-open {
  overflow: hidden;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    width: min(280px, 84vw);
    box-shadow: var(--shadow-lg);
  }

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

  /* The collapsed rail only applies on desktop. */
  .sidebar.collapsed {
    width: min(280px, 84vw);
  }

  .sidebar.collapsed .brand-text,
  .sidebar.collapsed .nav-label,
  .sidebar.collapsed .nav-badge,
  .sidebar.collapsed .nav-section-title {
    opacity: 1;
    width: auto;
    height: auto;
    display: revert;
  }

  .sidebar.collapsed .nav-item {
    justify-content: flex-start;
    padding: var(--space-2) var(--space-3);
  }

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

  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: calc(var(--z-sticky) - 1);
  }

  .main {
    margin-left: 0;
  }

  .mobile-menu-btn {
    display: flex;
  }

  /* Larger tap targets for the drawer. */
  .sidebar .nav-item {
    padding: var(--space-3);
  }

  .search-box input {
    width: 180px;
  }

  .search-box input:focus {
    width: 220px;
  }
}

@media (max-width: 768px) {
  .content {
    padding: var(--space-3);
  }

  .topbar {
    padding: 0 var(--space-3);
  }

  .user-name {
    display: none;
  }

  .user-menu {
    padding: var(--space-1);
    border-radius: var(--radius-full);
  }

  .search-box {
    display: none;
  }

  .mobile-search-btn {
    display: flex;
  }

  .page-header-row {
    flex-direction: column;
    gap: var(--space-3);
    align-items: stretch;
  }

  .page-title {
    font-size: var(--text-xl);
  }

  /* Keep primary actions reachable: full-width, wrap, sticky-friendly. */
  .page-header-row > .flex {
    flex-wrap: wrap;
  }

  .notice {
    font-size: var(--text-sm);
  }
}

@media (max-width: 480px) {
  .content {
    padding: var(--space-2);
  }

  .btn-label {
    display: none;
  }

  .quick-create {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
  }

  .topbar-right {
    gap: var(--space-1);
  }

  .user-menu .user-avatar {
    width: 26px;
    height: 26px;
  }
}