/* ==========================================================================
   BasketSync — Modern Family Shopping List Stylesheet
   Implements Modern Web Guidance for Dark Mode, Forms, Checkboxes, Dialogs,
   and Discrete Entry/Exit Animations.
   ========================================================================== */

:root {
  /* Reusable SVG assets for custom checkboxes */
  --icon-check: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'></polyline></svg>");
  --icon-dash: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='4.5' stroke-linecap='round' stroke-linejoin='round'><line x1='5' y1='12' x2='19' y2='12'></line></svg>");

  /* Raw Light Mode Tokens */
  --bg-canvas-light: #f4f6fb;
  --bg-surface-light: #ffffff;
  --bg-elevated-light: #f8fafc;
  --bg-subtle-light: #eef2ff;
  --text-primary-light: #0f172a;
  --text-secondary-light: #475569;
  --text-muted-light: #64748b;
  --border-color-light: #cbd5e1;
  --border-subtle-light: #e2e8f0;
  --brand-primary-light: #2563eb;
  --brand-primary-hover-light: #1d4ed8;
  --brand-text-light: #ffffff;
  --accent-emerald-light: #059669;
  --danger-color-light: #dc2626;
  --danger-bg-light: #fef2f2;
  --shadow-card-light: 0 4px 20px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --scrollbar-thumb-light: #94a3b8;
  --scrollbar-track-light: #f1f5f9;

  /* Raw Dark Mode Tokens */
  --bg-canvas-dark: #0b1120;
  --bg-surface-dark: #151f32;
  --bg-elevated-dark: #1e293b;
  --bg-subtle-dark: #1e2a4a;
  --text-primary-dark: #f8fafc;
  --text-secondary-dark: #cbd5e1;
  --text-muted-dark: #94a3b8;
  --border-color-dark: #334155;
  --border-subtle-dark: #1e293b;
  --brand-primary-dark: #60a5fa;
  --brand-primary-hover-dark: #93c5fd;
  --brand-text-dark: #09101d;
  --accent-emerald-dark: #34d399;
  --danger-color-dark: #f87171;
  --danger-bg-dark: #3b181c;
  --shadow-card-dark: 0 8px 28px -4px rgba(0, 0, 0, 0.45), 0 2px 8px -2px rgba(0, 0, 0, 0.35);
  --scrollbar-thumb-dark: #475569;
  --scrollbar-track-dark: #0f172a;

  /* Default Assignments (Light Fallback) */
  --bg-canvas: var(--bg-canvas-light);
  --bg-surface: var(--bg-surface-light);
  --bg-elevated: var(--bg-elevated-light);
  --bg-subtle: var(--bg-subtle-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --text-muted: var(--text-muted-light);
  --border-color: var(--border-color-light);
  --border-subtle: var(--border-subtle-light);
  --brand-primary: var(--brand-primary-light);
  --brand-primary-hover: var(--brand-primary-hover-light);
  --brand-text: var(--brand-text-light);
  --accent-emerald: var(--accent-emerald-light);
  --danger-color: var(--danger-color-light);
  --danger-bg: var(--danger-bg-light);
  --shadow-card: var(--shadow-card-light);
  --scrollbar-thumb: var(--scrollbar-thumb-light);
  --scrollbar-track: var(--scrollbar-track-light);

  /* MANDATORY: Fallback for browsers without light-dark() support */
  @media (prefers-color-scheme: dark) {
    --bg-canvas: var(--bg-canvas-dark);
    --bg-surface: var(--bg-surface-dark);
    --bg-elevated: var(--bg-elevated-dark);
    --bg-subtle: var(--bg-subtle-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --text-muted: var(--text-muted-dark);
    --border-color: var(--border-color-dark);
    --border-subtle: var(--border-subtle-dark);
    --brand-primary: var(--brand-primary-dark);
    --brand-primary-hover: var(--brand-primary-hover-dark);
    --brand-text: var(--brand-text-dark);
    --accent-emerald: var(--accent-emerald-dark);
    --danger-color: var(--danger-color-dark);
    --danger-bg: var(--danger-bg-dark);
    --shadow-card: var(--shadow-card-dark);
    --scrollbar-thumb: var(--scrollbar-thumb-dark);
    --scrollbar-track: var(--scrollbar-track-dark);
  }

  /* Modern light-dark() color adaptation */
  @supports (color: light-dark(white, black)) {
    --bg-canvas: light-dark(var(--bg-canvas-light), var(--bg-canvas-dark));
    --bg-surface: light-dark(var(--bg-surface-light), var(--bg-surface-dark));
    --bg-elevated: light-dark(var(--bg-elevated-light), var(--bg-elevated-dark));
    --bg-subtle: light-dark(var(--bg-subtle-light), var(--bg-subtle-dark));
    --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));
    --text-secondary: light-dark(var(--text-secondary-light), var(--text-secondary-dark));
    --text-muted: light-dark(var(--text-muted-light), var(--text-muted-dark));
    --border-color: light-dark(var(--border-color-light), var(--border-color-dark));
    --border-subtle: light-dark(var(--border-subtle-light), var(--border-subtle-dark));
    --brand-primary: light-dark(var(--brand-primary-light), var(--brand-primary-dark));
    --brand-primary-hover: light-dark(var(--brand-primary-hover-light), var(--brand-primary-hover-dark));
    --brand-text: light-dark(var(--brand-text-light), var(--brand-text-dark));
    --accent-emerald: light-dark(var(--accent-emerald-light), var(--accent-emerald-dark));
    --danger-color: light-dark(var(--danger-color-light), var(--danger-color-dark));
    --danger-bg: light-dark(var(--danger-bg-light), var(--danger-bg-dark));
    --shadow-card: light-dark(var(--shadow-card-light), var(--shadow-card-dark));
    --scrollbar-thumb: light-dark(var(--scrollbar-thumb-light), var(--scrollbar-thumb-dark));
    --scrollbar-track: light-dark(var(--scrollbar-track-light), var(--scrollbar-track-dark));
  }

  /* MANDATORY: Apply color-scheme to :root for viewport-wide native UI theming */
  color-scheme: light dark;
  accent-color: var(--brand-primary);

  /* Pair scrollbar-color with scrollbar-width for macOS compatibility; never animate scrollbar-color */
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* Legacy fallback for WebKit/Blink browsers lacking scrollbar-color */
@supports not (scrollbar-color: auto) {
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  ::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 5px;
  }
  ::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
}

/* Canonical visually-hidden utility (never display: none) */
.visually-hidden {
  position: absolute;
  clip-path: inset(50%);
  overflow: hidden;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  white-space: nowrap;
}

/* ==========================================================================
   App Shell & Header
   ========================================================================== */

.app-shell {
  max-inline-size: 1360px;
  margin-inline: auto;
  padding: 1.25rem clamp(1rem, 3vw, 2rem) 3rem;
}

.top-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.35rem;
  margin-block-end: 1.5rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  box-shadow: var(--shadow-card);
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-logo {
  display: grid;
  place-items: center;
  inline-size: 3rem;
  block-size: 3rem;
  font-size: 1.6rem;
  background: linear-gradient(135deg, #2563eb, #0d9488);
  color: #ffffff;
  border-radius: 0.85rem;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.28);
}

.brand-title-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.brand-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.025em;
}

.family-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background-color: var(--bg-subtle);
  color: var(--brand-primary);
  border-radius: 999px;
}

.brand-subtitle {
  margin: 0.1rem 0 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.header-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.member-badge-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-elevated);
  padding: 0.25rem 0.65rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
}

.member-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  white-space: nowrap;
}

.member-input {
  inline-size: 7.5rem;
  min-block-size: 2.25rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 0.5rem;
  background-color: var(--bg-surface);
  color: var(--text-primary);
}

.db-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-block-size: 44px;
  padding: 0.45rem 0.85rem;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  background-color: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  cursor: pointer;
}

.db-status-pill:hover {
  border-color: var(--brand-primary);
}

.status-dot {
  inline-size: 0.6rem;
  block-size: 0.6rem;
  border-radius: 50%;
  background-color: #f59e0b;
}

.status-dot.connected {
  background-color: #10b981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.status-dot.fallback {
  background-color: #f59e0b;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}

/* ==========================================================================
   Main Grid Layout
   ========================================================================== */

.main-grid {
  display: grid;
  grid-template-columns: 370px minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

@media (max-width: 960px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

.sidebar-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.panel-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 1.25rem;
  box-shadow: var(--shadow-card);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 0.85rem;
}

.panel-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* Family Lists Navigation */
.lists-nav {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.list-tab-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.65rem 0.85rem;
  min-block-size: 48px;
  border-radius: 0.75rem;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 150ms ease, background-color 150ms ease;
}

.list-tab-item.active {
  background-color: var(--bg-subtle);
  border-color: var(--brand-primary);
  font-weight: 600;
}

.list-tab-btn {
  flex: 1;
  text-align: start;
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.list-count-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
  background-color: var(--bg-surface);
  color: var(--text-secondary);
}

/* ==========================================================================
   Forms & Validation (Gestalt Proximity + :user-invalid)
   ========================================================================== */

.form-fieldset {
  border: none;
  margin: 0;
  padding: 0;
}

.form-fieldset > legend {
  margin-block-end: 1rem;
  padding: 0;
}

/* Gestalt Proximity Rule: vertical margin between label and input (0.35rem)
   is strictly smaller than margin between form groups (1.15rem) */
.form-group {
  margin-block-end: 1.15rem;
}

.label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 0.35rem;
}

.form-group > label {
  display: block;
  margin-block-end: 0.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.label-row > label {
  margin-block-end: 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.required-star {
  color: var(--danger-color);
}

.field-hint {
  display: block;
  margin-block-start: 0.25rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.form-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

input[type="text"],
input[type="number"],
input[type="search"],
select,
textarea {
  inline-size: 100%;
  min-block-size: 48px;
  padding: 0.65rem 0.85rem;
  font-family: inherit;
  /* Minimum 1rem (16px) prevents automatic iOS zoom on focus */
  font-size: 1rem;
  color: var(--text-primary);
  background-color: var(--bg-elevated);
  border: 1.5px solid var(--border-color);
  border-radius: 0.65rem;
  transition: border-color 150ms ease, background-color 150ms ease;
}

@media (pointer: coarse) {
  input[type="text"],
  input[type="number"],
  input[type="search"],
  select,
  textarea {
    min-block-size: 52px;
  }
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: 3px solid var(--brand-primary);
  outline-offset: 2px;
}

/* Quantity Stepper */
.qty-stepper {
  display: flex;
  align-items: stretch;
  gap: 0.25rem;
}

.qty-stepper input[type="number"] {
  text-align: center;
  font-weight: 700;
  padding-inline: 0.35rem;
}

.stepper-btn {
  min-inline-size: 44px;
  min-block-size: 48px;
  border: 1.5px solid var(--border-color);
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  border-radius: 0.65rem;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
}

.stepper-btn:hover {
  background-color: var(--bg-subtle);
  border-color: var(--brand-primary);
}

/* Validation Feedback with :user-invalid and Fallback */
.error-msg {
  display: none;
  margin-block-start: 0.35rem;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--danger-color);
}

input:user-invalid,
select:user-invalid,
input.user-invalid-fallback,
select.user-invalid-fallback {
  border-color: var(--danger-color);
  background-color: var(--danger-bg);
}

input:user-invalid ~ .error-msg,
select:user-invalid ~ .error-msg,
input.user-invalid-fallback ~ .error-msg,
select.user-invalid-fallback ~ .error-msg,
.qty-stepper:has(input:user-invalid) ~ .error-msg,
.qty-stepper:has(input.user-invalid-fallback) ~ .error-msg {
  display: block;
}

/* ==========================================================================
   Custom Checkboxes (appearance: none + CSS Mask + 44px Hit Target)
   ========================================================================== */

.checkbox-custom {
  --checkbox-size: 1.35em;
  --checkbox-icon-size: 0.78em;

  appearance: none;
  display: inline-grid;
  place-content: center;
  inline-size: var(--checkbox-size);
  aspect-ratio: 1;
  margin: 0;
  border: 2px solid var(--border-color);
  border-radius: 0.4rem;
  background-color: var(--bg-surface);
  color: var(--brand-primary);
  cursor: pointer;
  flex-shrink: 0;

  &::before {
    content: "";
    inline-size: var(--checkbox-icon-size);
    aspect-ratio: 1;
    background-color: var(--brand-text);
    mask: var(--checkbox-icon) no-repeat center / contain;
    scale: 0;

    @media (prefers-reduced-motion: no-preference) {
      transition: scale 150ms ease;
    }

    @media (forced-colors: active) {
      background-color: CanvasText;
    }
  }

  &:checked {
    --checkbox-icon: var(--icon-check);
    background-color: var(--brand-primary);
    border-color: var(--brand-primary);
  }

  &:indeterminate {
    --checkbox-icon: var(--icon-dash);
    background-color: var(--brand-primary);
    border-color: var(--brand-primary);
  }

  &:is(:checked, :indeterminate)::before {
    scale: 1;
  }

  &:focus-visible {
    outline: 3px solid var(--brand-primary);
    outline-offset: 2px;
  }

  &:disabled {
    cursor: not-allowed;
    opacity: 0.5;
  }
}

.toggle-completed-label,
.item-check-label,
.store-select-all-label {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-block-size: 44px;
  cursor: pointer;
  user-select: none;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-block-size: 48px;
  padding: 0.6rem 1.1rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 0.7rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background-color 150ms ease, border-color 150ms ease, opacity 150ms ease;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-sm {
  min-block-size: 40px;
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

.btn-full {
  inline-size: 100%;
}

.btn-primary {
  background-color: var(--brand-primary);
  color: var(--brand-text);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--brand-primary-hover);
}

.btn-secondary {
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--brand-primary);
}

.btn-ghost {
  background-color: transparent;
  color: var(--brand-primary);
  border-color: var(--border-subtle);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-subtle);
}

.btn-danger {
  background-color: var(--danger-color);
  color: #ffffff;
}

.btn-danger-outline {
  background-color: transparent;
  color: var(--danger-color);
  border-color: var(--danger-color);
}

.btn-danger-outline:hover:not(:disabled) {
  background-color: var(--danger-bg);
}

.link-btn {
  background: none;
  border: none;
  padding: 0.25rem 0.4rem;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--brand-primary);
  cursor: pointer;
  border-radius: 0.4rem;
}

.link-btn:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Right Content Panel: List Hero, Progress, Filter Toolbar
   ========================================================================== */

.content-panel {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.list-hero-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 1.35rem 1.5rem;
  box-shadow: var(--shadow-card);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1.25rem;
  align-items: center;
}

@media (max-width: 680px) {
  .list-hero-card {
    grid-template-columns: 1fr;
  }
}

.list-hero-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.list-hero-title {
  margin: 0;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.sync-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 600;
  border-radius: 999px;
  background-color: var(--bg-elevated);
  color: var(--accent-emerald);
  border: 1px solid var(--border-subtle);
}

.pulse-dot {
  inline-size: 0.5rem;
  block-size: 0.5rem;
  border-radius: 50%;
  background-color: var(--accent-emerald);
}

.list-hero-desc {
  margin: 0.25rem 0 0;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

.stats-cluster {
  display: flex;
  gap: 0.75rem;
}

.stat-box {
  min-inline-size: 82px;
  padding: 0.65rem 0.9rem;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 0.8rem;
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.progress-wrapper {
  grid-column: 1 / -1;
}

.progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-block-end: 0.4rem;
}

.progress-track {
  inline-size: 100%;
  block-size: 0.65rem;
  background-color: var(--bg-elevated);
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.progress-fill {
  block-size: 100%;
  background: linear-gradient(90deg, #2563eb, #10b981);
  border-radius: 999px;
  transition: width 250ms ease;
}

/* Filter Toolbar */
.toolbar-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  padding: 1.1rem 1.35rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.store-pills-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toolbar-section-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.store-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.store-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-block-size: 42px;
  padding: 0.4rem 0.9rem;
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 999px;
  border: 1.5px solid var(--border-color);
  background-color: var(--bg-elevated);
  color: var(--text-primary);
  cursor: pointer;
  transition: background-color 150ms ease, border-color 150ms ease;
}

.store-pill-btn:hover {
  border-color: var(--brand-primary);
}

.store-pill-btn.active {
  background-color: var(--brand-primary);
  color: var(--brand-text);
  border-color: var(--brand-primary);
}

.store-pill-count {
  font-size: 0.75rem;
  padding: 0.05rem 0.45rem;
  border-radius: 999px;
  background-color: rgba(128, 128, 128, 0.18);
}

.toolbar-actions-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.search-box {
  flex: 1 1 240px;
}

.filter-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

/* ==========================================================================
   Store Groups & Item Cards (Discrete Entry/Exit Animations)
   ========================================================================== */

.stores-list-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.store-group {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.store-group-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1.35rem;
  background-color: var(--bg-elevated);
  border-block-end: 1px solid var(--border-subtle);
}

.store-header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.store-color-badge {
  display: inline-grid;
  place-items: center;
  inline-size: 2.3rem;
  block-size: 2.3rem;
  border-radius: 0.65rem;
  font-size: 1.15rem;
  color: #ffffff;
  font-weight: 700;
}

.store-group-title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.store-group-subtitle {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.store-items-list {
  list-style: none;
  margin: 0;
  padding: 0.5rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

/* Item Card with @starting-style and transition-behavior: allow-discrete */
.item-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 0.8rem;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  opacity: 1;
  translate: 0;
  transition:
    display 0.3s,
    opacity 0.3s ease-out,
    translate 0.3s ease-out,
    background-color 0.2s ease;
  /* MANDATORY: Separate transition-behavior declaration so older browsers don't drop transition */
  transition-behavior: allow-discrete;
}

@starting-style {
  .item-card {
    opacity: 0;
    translate: 0 -12px;
  }
}

.item-card:where([hidden], [data-closing]) {
  opacity: 0;
  translate: 0 -12px;
}

.item-card[hidden] {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  .item-card {
    translate: none;
    transition-duration: 0.1s;
  }

  @starting-style {
    .item-card {
      translate: none;
    }
  }

  .item-card:where([hidden], [data-closing]) {
    translate: none;
  }
}

.item-card.is-completed {
  opacity: 0.72;
  background-color: var(--bg-surface);
}

.item-main {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex: 1;
  min-inline-size: 0;
}

.item-details {
  display: flex;
  flex-direction: column;
  min-inline-size: 0;
}

.item-title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.item-name-text {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text-primary);
  word-break: break-word;
}

.item-card.is-completed .item-name-text {
  text-decoration: line-through;
  color: var(--text-muted);
}

.item-category-tag {
  font-size: 0.73rem;
  font-weight: 600;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  background-color: var(--bg-subtle);
  color: var(--brand-primary);
}

.item-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-block-start: 0.15rem;
}

.item-completed-badge {
  color: var(--accent-emerald);
  font-weight: 600;
}

.item-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.qty-pill-control {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  padding: 0.15rem 0.35rem;
}

.qty-mini-btn {
  inline-size: 32px;
  block-size: 32px;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50%;
  cursor: pointer;
}

.qty-mini-btn:hover {
  background-color: var(--bg-subtle);
}

.qty-display {
  font-size: 0.88rem;
  font-weight: 700;
  padding-inline: 0.45rem;
  white-space: nowrap;
}

.icon-action-btn {
  inline-size: 40px;
  block-size: 40px;
  display: inline-grid;
  place-items: center;
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: 0.55rem;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
}

.icon-action-btn:hover {
  background-color: var(--bg-surface);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.icon-action-btn.delete-btn:hover {
  color: var(--danger-color);
  border-color: var(--danger-color);
}

/* Empty State */
.empty-state-card {
  background-color: var(--bg-surface);
  border: 1.5px dashed var(--border-color);
  border-radius: 1rem;
  padding: 3rem 1.5rem;
  text-align: center;
}

.empty-state-icon {
  font-size: 2.75rem;
  margin-block-end: 0.75rem;
}

.empty-state-title {
  margin: 0 0 0.4rem;
  font-size: 1.2rem;
  font-weight: 700;
}

.empty-state-desc {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* ==========================================================================
   Native <dialog> Modals (Modern Web Guidance)
   ========================================================================== */

dialog {
  padding: 0;
  border: 1px solid var(--border-color);
  border-radius: 1.1rem;
  background-color: var(--bg-surface);
  color: var(--text-primary);
  max-inline-size: 480px;
  inline-size: calc(100% - 2rem);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
}

/* Scope display only to dialog[open] so closed state is never overridden */
dialog[open] {
  display: block;
}

/* MANDATORY: Prevent scroll chaining to underlying page without locking body overflow */
dialog:modal {
  overscroll-behavior: contain;
}

dialog::backdrop {
  overflow: hidden;
  overscroll-behavior: contain;
  background-color: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
}

.dialog-inner {
  padding: 1.5rem;
}

.dialog-title {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 800;
}

.dialog-body-text {
  margin: 0 0 1.25rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-block-start: 1.25rem;
}

.color-picker-input {
  inline-size: 100%;
  block-size: 48px;
  padding: 0.25rem;
  border-radius: 0.65rem;
  border: 1.5px solid var(--border-color);
  background-color: var(--bg-elevated);
  cursor: pointer;
}

.db-diagnostics-box {
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 1rem;
  font-size: 0.88rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.db-diag-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-block-end: 1px solid var(--border-subtle);
  padding-block-end: 0.4rem;
}

.db-diag-row:last-child {
  border-block-end: none;
  padding-block-end: 0;
}

.db-diag-key {
  font-weight: 600;
  color: var(--text-secondary);
}

.db-diag-val {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  word-break: break-all;
  text-align: end;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */

.toast-container {
  position: fixed;
  inset-block-end: 1.25rem;
  inset-inline-end: 1.25rem;
  z-index: 50;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-inline-size: 360px;
}

.toast-item {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-inline-start: 4px solid var(--brand-primary);
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  box-shadow: var(--shadow-card);
  font-size: 0.88rem;
  font-weight: 600;
}