/* ═══════════════════════════════════════════════════════════════════════════
   mobile.css — Mobile-first styles for Mini 進貨表 (Mobile Purchase Tracker)
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── CSS Custom Properties ─────────────────────────────────────────────── */
:root {
  /* Colours */
  --color-primary:        #6750A4;
  --color-primary-dark:   #4F378B;
  --color-primary-light:  #EADDFF;
  --color-secondary:      #625B71;
  --color-surface:        #FFFBFE;
  --color-surface-variant:#E7E0EC;
  --color-background:     #F6F0FF;
  --color-on-primary:     #FFFFFF;
  --color-on-surface:     #1C1B1F;
  --color-on-surface-var: #49454F;
  --color-error:          #B3261E;
  --color-error-bg:       #F9DEDC;
  --color-warning:        #7D5700;
  --color-warning-bg:     #FFDEA8;
  --color-success:        #146C2E;
  --color-success-bg:     #C6EFD3;
  --color-outline:        #79747E;
  --color-scrim:          rgba(0, 0, 0, 0.50);

  /* Brand chip palette (deterministic — assigned by hash in JS) */
  --chip-0: #6750A4; --chip-0-text: #fff;
  --chip-1: #B5179E; --chip-1-text: #fff;
  --chip-2: #0077B6; --chip-2-text: #fff;
  --chip-3: #2D6A4F; --chip-3-text: #fff;
  --chip-4: #D62828; --chip-4-text: #fff;
  --chip-5: #E76F51; --chip-5-text: #fff;
  --chip-6: #457B9D; --chip-6-text: #fff;
  --chip-7: #6D4C41; --chip-7-text: #fff;

  /* Spacing */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans TC', sans-serif;
  --font-size-xs:   11px;
  --font-size-sm:   13px;
  --font-size-base: 15px;
  --font-size-md:   17px;
  --font-size-lg:   20px;
  --font-size-xl:   24px;

  /* Touch targets */
  --touch-target: 44px;

  /* Elevation */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md:  0 4px 6px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.08);
  --shadow-lg:  0 10px 20px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.08);

  /* Radii */
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-sheet:  0.3s ease;
}

/* ─── Reset & Base ───────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-background);
  color: var(--color-on-surface);
  min-height: 100dvh;
  max-width: 600px;
  margin: 0 auto;
  overflow-x: hidden;
  position: relative;
}

/* ─── Views ──────────────────────────────────────────────────────────────── */
.view { min-height: 100dvh; }
.view.hidden { display: none !important; }

/* ─── Login View ─────────────────────────────────────────────────────────── */
.login-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: var(--space-xl) var(--space-md);
  gap: var(--space-lg);
}

.app-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  line-height: 1.3;
}

.app-subtitle {
  font-size: var(--font-size-md);
  font-weight: 400;
  color: var(--color-secondary);
}

.form-heading {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-on-surface);
  margin-bottom: var(--space-md);
}

/* ─── App Header ─────────────────────────────────────────────────────────── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: var(--color-on-primary);
  min-height: var(--touch-target);
  box-shadow: var(--shadow-sm);
}

.header-title {
  font-size: var(--font-size-md);
  font-weight: 700;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.user-email {
  font-size: var(--font-size-xs);
  opacity: 0.85;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}


/* ─── Loading Bar ────────────────────────────────────────────────────────── */
.loading-bar {
  height: 3px;
  background: var(--color-primary-light);
  overflow: hidden;
}

.loading-bar-inner {
  height: 100%;
  width: 40%;
  background: var(--color-primary);
  animation: loading-slide 1.2s ease-in-out infinite;
}

@keyframes loading-slide {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* ─── Warning / Error Banners ────────────────────────────────────────────── */
.warning-banner {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  font-size: var(--font-size-sm);
  padding: var(--space-sm) var(--space-md);
  text-align: center;
}

.error-message {
  background: var(--color-error-bg);
  color: var(--color-error);
  font-size: var(--font-size-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  margin-top: var(--space-sm);
}

/* ─── Scroll Area ────────────────────────────────────────────────────────── */
#scroll-area {
  padding: var(--space-md);
  padding-bottom: calc(56px + var(--space-lg) + var(--space-xl));
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* ─── Card Sections ──────────────────────────────────────────────────────── */
.card-section {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.section-header {
  padding: var(--space-md) var(--space-md) var(--space-sm);
  border-bottom: 1px solid var(--color-surface-variant);
}

.section-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-on-surface);
}

.total-bar {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
  margin-top: var(--space-xs);
}

.total-bar strong {
  color: var(--color-primary);
  font-size: var(--font-size-md);
}

.card-list { display: flex; flex-direction: column; }

.empty-state {
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  color: var(--color-on-surface-var);
  font-size: var(--font-size-sm);
}

.history-limit-notice {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
  padding: var(--space-sm) var(--space-md) var(--space-md);
}

/* ─── Catalog Tab ────────────────────────────────────────────────────────── */
.catalog-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-surface-variant);
}

.catalog-search-wrapper {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.catalog-search-wrapper input {
  flex: 1;
  padding: 6px var(--space-sm);
  padding-right: 32px;
  border: 1.5px solid var(--color-outline);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  background: var(--color-background);
  color: var(--color-on-surface);
}

.catalog-search-wrapper input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.catalog-search-wrapper .btn-icon {
  position: absolute;
  right: 4px;
  font-size: 16px;
  color: var(--color-outline);
}

.catalog-count {
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
  padding: var(--space-xs) var(--space-md);
  margin: 0;
}

/* ─── Catalog Brand Header ───────────────────────────────────────────────── */
.catalog-brand-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px var(--space-md);
  background: var(--color-primary);
  color: var(--color-on-primary);
  position: sticky;
  top: 0;
  z-index: 10;
  cursor: pointer;
  user-select: none;
  border-bottom: 2px solid var(--color-primary-dark);
}

.catalog-brand-header:hover,
.catalog-brand-header:focus-visible {
  background: var(--color-primary-dark);
  outline: none;
}

/* Override brand chip colours inside the header for contrast */
.catalog-brand-header .brand-chip {
  background: rgba(255,255,255,0.2);
  color: #fff;
  font-size: var(--font-size-sm);
}

.catalog-brand-count {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.75);
  margin-left: auto;
  font-weight: 400;
}

/* ─── Chevron ────────────────────────────────────────────────────────────── */
.catalog-chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
  opacity: 0.7;
}

.catalog-chevron::before {
  content: '';
  display: block;
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
  margin-left: 3px;
}

.catalog-chevron--open { transform: rotate(90deg); opacity: 1; }
.catalog-chevron--sm { width: 16px; height: 16px; }
.catalog-chevron--sm::before { width: 6px; height: 6px; }

/* ─── Brand body ─────────────────────────────────────────────────────────── */
.catalog-brand-body[hidden] { display: none !important; }
.catalog-char-body[hidden]  { display: none !important; }

/* ─── Series row ─────────────────────────────────────────────────────────── */
.catalog-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px var(--space-md);
  border-bottom: 1px solid var(--color-surface-variant);
  background: var(--color-surface);
}

.catalog-row:last-child { border-bottom: none; }

.catalog-row--series.catalog-collapsible {
  cursor: pointer;
  user-select: none;
}

.catalog-row--series.catalog-collapsible:hover,
.catalog-row--series.catalog-collapsible:focus-visible {
  background: var(--color-primary-light);
  outline: none;
}

/* ─── Character row ──────────────────────────────────────────────────────── */
.catalog-row--char {
  padding-left: calc(var(--space-md) + 28px);
  background: var(--color-background);
  border-bottom: 1px solid var(--color-surface-variant);
}

.catalog-row--char:last-child { border-bottom: none; }

/* ─── Series name (bold, left of chevron) ────────────────────────────────── */
.catalog-row__series-name {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-on-surface);
  word-break: break-word;
  flex: 1;
  line-height: 1.3;
}

/* ─── Character name ─────────────────────────────────────────────────────── */
.catalog-row__char {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
  flex: 1;
  word-break: break-word;
}

/* ─── Character count badge ──────────────────────────────────────────────── */
.catalog-char-count {
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
  white-space: nowrap;
  flex-shrink: 0;
  background: var(--color-surface-variant);
  padding: 1px 6px;
  border-radius: var(--radius-full);
}

/* ─── Catalog ID Badge ───────────────────────────────────────────────────── */
.catalog-id-badge {
  font-size: var(--font-size-xs);
  font-family: ui-monospace, 'SF Mono', 'Cascadia Code', monospace;
  color: var(--color-on-surface-var);
  background: var(--color-surface-variant);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.catalog-id-badge--item {
  font-size: 10px;
  opacity: 0.75;
}

/* ─── Edit item button + add-item row ────────────────────────────────────── */
.catalog-item-edit-btn {
  background: none; border: none; cursor: pointer;
  font-size: 13px; padding: 2px 6px; margin-left: auto;
  opacity: 0.6; position: relative; z-index: 1;
}
.catalog-item-edit-btn:hover { opacity: 1; }
.catalog-add-item-row {
  display: block; width: 100%; text-align: left;
  padding: 8px calc(var(--space-md) + 28px);
  background: none; border: none; cursor: pointer;
  color: var(--color-primary); font-size: 13px; font-weight: 600;
}
.catalog-add-item-row:hover { background: var(--color-surface-variant); }

/* ─── Secret item row ────────────────────────────────────────────────────── */
.catalog-row--secret .catalog-row__char {
  color: var(--color-primary);
  font-weight: 600;
}

/* ─── Delete button ──────────────────────────────────────────────────────── */
.catalog-row__delete {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--color-error);
  border-radius: var(--radius-full);
  background: none;
  color: var(--color-error);
  cursor: pointer;
  transition: background var(--transition-fast);
  padding: 0;
  opacity: 0.5;
}

.catalog-row__delete:hover,
.catalog-row__delete:focus-visible {
  background: var(--color-error-bg);
  opacity: 1;
}

.catalog-row__delete:disabled {
  opacity: 0.2;
  cursor: not-allowed;
  border-color: var(--color-outline);
  color: var(--color-outline);
}

/* ─── History Cards ──────────────────────────────────────────────────────── */
.history-card {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-surface-variant);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-xs) var(--space-sm);
}

.history-card:last-child { border-bottom: none; }

.history-card__top {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  grid-column: 1 / -1;
}

.history-card__date {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
}

.history-card__item {
  font-size: var(--font-size-base);
  font-weight: 500;
  grid-column: 1 / -1;
}

.history-card__subtotal {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
}

.history-card__meta {
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
  grid-column: 1 / -1;
}

/* ─── History Row (two-line card layout) ─────────────────────────────────── */

/* Top line: brand chip + item name */
.history-row__top {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.history-row__brand {
  flex-shrink: 0;
}

/* ─── History Row Action Buttons ─────────────────────────────────────────── */
.history-row {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px var(--space-md);
  border-bottom: 1px solid var(--color-surface-variant);
}

.history-row:last-child { border-bottom: none; }

/* Body = single content column */
.history-row__body {
  flex: 1;
  min-width: 0;
}

/* Line 1: date pill + merchant pill side by side */
.history-row__header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-bottom: 3px;
}

/* Date pill */
.history-row__date {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-secondary);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  line-height: 1.4;
}

/* Right: stacked content */
.history-row__content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* Line 1: merchant pill */
.history-row__merchant {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  white-space: nowrap;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-row__merchant--empty {
  background: transparent;
  color: var(--color-outline);
  font-weight: 400;
  border: 1px dashed var(--color-outline);
  opacity: 0.5;
}

/* Line 2: char · price · qty (bigger) */
.history-row__priceline {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

.history-row__char {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-on-surface);
}

.history-row__amount {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-primary);
  white-space: nowrap;
}

.history-row__price {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-on-surface);
  white-space: nowrap;
}

.history-row__sep {
  font-size: var(--font-size-md);
  color: var(--color-outline);
}

/* Line 3: series name (smaller, muted) */
.history-row__item {
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-on-surface-var);
  word-break: break-word;
}

.history-row__item--clickable {
  cursor: pointer;
  color: var(--color-secondary);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 2px;
}

.history-row__item--clickable:hover,
.history-row__item--clickable:focus-visible {
  text-decoration-style: solid;
  color: var(--color-primary);
  outline: none;
}

.history-row__actions {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex-shrink: 0;
}

.history-row__action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  background: none;
  transition: background var(--transition-fast), color var(--transition-fast);
  padding: 0;
}

.history-row__action-btn svg {
  width: 13px;
  height: 13px;
}

.history-row__action-btn--edit {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.history-row__action-btn--edit:hover,
.history-row__action-btn--edit:focus-visible {
  background: var(--color-primary-light);
}

.history-row__action-btn--delete {
  color: var(--color-error);
  border-color: var(--color-error);
}

.history-row__action-btn--delete:hover,
.history-row__action-btn--delete:focus-visible {
  background: var(--color-error-bg);
}

/* ─── Default Exchange Rate Bar (Add tab) ───────────────────────────────── */
.default-rate-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-surface-variant);
}

.default-rate-bar__row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.default-rate-bar__label {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-on-surface-var);
  white-space: nowrap;
  flex-shrink: 0;
  width: 120px;
}

.default-rate-bar__input {
  flex: 1;
  padding: 4px var(--space-sm);
  border: 1.5px solid var(--color-outline);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  background: var(--color-background);
  color: var(--color-on-surface);
}

.default-rate-bar__input--rate {
  max-width: 110px;
  text-align: right;
}

.default-rate-bar__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* ─── Merchant Selector with Quick Buttons ───────────────────────────────── */
.merchant-selector {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.merchant-subtitle {
  font-size: 11px;
  font-weight: 500;
  color: var(--color-on-surface-variant, #49454F);
  letter-spacing: 0.3px;
  margin-top: 4px;
}
.merchant-quick-btns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}
.merchant-quick-btn {
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--color-outline-variant, #CAC4D0);
  border-radius: 20px;
  background: transparent;
  color: var(--color-on-surface, #1C1B1F);
  cursor: pointer;
  transition: background .15s, border-color .15s, color .15s;
  white-space: nowrap;
  text-align: center;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}
.merchant-quick-btn:focus-visible {
  outline: 2px solid var(--color-primary, #6750A4);
  outline-offset: 2px;
}
@media (hover: hover) {
  .merchant-quick-btn:hover {
    background: var(--color-primary-container, #EADDFF);
  }
}
.merchant-quick-btn--active {
  background: var(--color-primary, #6750A4);
  color: var(--color-on-primary, #FFFFFF);
  border-color: var(--color-primary, #6750A4);
}
.merchant-custom-input {
  margin-top: 2px;
}
.rate-currency-toggle {
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 600;
  border: 1.5px solid var(--color-outline, #79747E);
  border-radius: 14px;
  background: transparent;
  color: var(--color-on-surface, #1C1B1F);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.rate-currency-toggle--twd {
  background: var(--color-primary, #6750A4);
  color: var(--color-on-primary, #FFFFFF);
  border-color: var(--color-primary, #6750A4);
}
.default-rate-bar__section {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}
.default-rate-bar__section > .default-rate-bar__label {
  font-size: 16px;
  margin-bottom: 2px;
}

/* ─── Confirm Submit Summary ─────────────────────────────────────────────── */
.confirm-summary {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  background: var(--color-surface-variant);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
}

.confirm-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
}

.confirm-label {
  color: var(--color-on-surface-var);
  flex-shrink: 0;
}

.confirm-value {
  font-weight: 600;
  color: var(--color-on-surface);
  text-align: right;
}

.confirm-value--total {
  color: var(--color-primary);
  font-size: var(--font-size-md);
}

.confirm-row--total {
  border-top: 1px solid var(--color-surface-variant);
  padding-top: var(--space-xs);
  margin-top: var(--space-xs);
}

/* Item list inside confirmation dialog */
.confirm-items {
  background: var(--color-background);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-height: 160px;
  overflow-y: auto;
}

.confirm-item-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
}

.confirm-item-name {
  color: var(--color-on-surface);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.confirm-item-price {
  color: var(--color-primary);
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}

.confirm-item-more {
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
  text-align: center;
  padding-top: 2px;
}

/* ─── Staging Cards ──────────────────────────────────────────────────────── */
.staging-card {
  padding: 10px var(--space-md);
  border-bottom: 1px solid var(--color-surface-variant);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.staging-card:last-child { border-bottom: none; }

/* Reuses history-row__content / history-row__header / history-row__priceline etc. */

.staging-card__delete {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: 1px solid var(--color-error);
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--color-error);
  transition: background var(--transition-fast);
  padding: 0;
}

.staging-card__delete:hover,
.staging-card__delete:focus-visible {
  background: var(--color-error-bg);
}

.staging-card__edit {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: none;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  color: var(--color-primary);
  transition: background var(--transition-fast);
  padding: 0;
}

.staging-card__edit:hover,
.staging-card__edit:focus-visible {
  background: var(--color-primary-light);
}

.staging-footer {
  padding: var(--space-md);
  border-top: 1px solid var(--color-surface-variant);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.staging-total {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
}

.staging-total strong {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-primary);
}

.staging-total-qty {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
}

/* ─── Brand Chips ────────────────────────────────────────────────────────── */
.brand-chip {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  white-space: nowrap;
  line-height: 1.6;
}

/* Chip inside history rows matches the item name size */
.history-row .brand-chip {
  padding: 1px 6px;
  font-size: 11px;
  line-height: 1.5;
}

.brand-chip--0 { background: var(--chip-0); color: var(--chip-0-text); }
.brand-chip--1 { background: var(--chip-1); color: var(--chip-1-text); }
.brand-chip--2 { background: var(--chip-2); color: var(--chip-2-text); }
.brand-chip--3 { background: var(--chip-3); color: var(--chip-3-text); }
.brand-chip--4 { background: var(--chip-4); color: var(--chip-4-text); }
.brand-chip--5 { background: var(--chip-5); color: var(--chip-5-text); }
.brand-chip--6 { background: var(--chip-6); color: var(--chip-6-text); }
.brand-chip--7 { background: var(--chip-7); color: var(--chip-7-text); }

/* ─── FAB ────────────────────────────────────────────────────────────────── */
.fab {
  position: fixed;
  bottom: calc(56px + env(safe-area-inset-bottom, 0px) + var(--space-md));
  right: var(--space-lg);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  transition: background var(--transition-fast), transform var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.fab:hover  { background: var(--color-primary-dark); }
.fab:active { transform: scale(0.94); }

.fab-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 20px;
  height: 20px;
  padding: 0 5px;
  border-radius: var(--radius-full);
  background: #D62828;
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  border: 2px solid var(--color-background);
}

/* ─── Overlay Backdrop ───────────────────────────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  background: var(--color-scrim);
  z-index: 300;
  display: flex;
  align-items: flex-end;
}

.overlay.hidden { display: none !important; }

/* ─── Bottom Sheet ───────────────────────────────────────────────────────── */
.bottom-sheet {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  max-height: 90vh;
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateY(100%);
  transition: transform var(--transition-sheet);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.bottom-sheet--open { transform: translateY(0); }

.bottom-sheet--tall { max-height: 92vh; }

.drag-handle {
  width: 32px;
  height: 4px;
  background: var(--color-outline);
  border-radius: var(--radius-full);
  margin: var(--space-sm) auto var(--space-xs);
  opacity: 0.4;
}

.sheet-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md) var(--space-md);
  border-bottom: 1px solid var(--color-surface-variant);
}

.sheet-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  flex: 1;
  min-width: 0;
  word-break: break-word;
  line-height: 1.3;
}

.sheet-title__char {
  font-size: var(--font-size-base);
  font-weight: 400;
  color: var(--color-on-surface-var);
  margin-top: 1px;
}

/* ─── Forms & Fields ─────────────────────────────────────────────────────── */
form { padding: var(--space-md); display: flex; flex-direction: column; gap: var(--space-md); }

.field-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.field-group--inline {
  flex-direction: row;
  align-items: center;
  gap: var(--space-sm);
}

.field-group--inline label { white-space: nowrap; min-width: 60px; }

/* ─── Quantity Stepper ───────────────────────────────────────────────────── */
.qty-stepper {
  display: flex; align-items: center; gap: 0;
  border: 1px solid var(--md-outline-variant, #ccc); border-radius: 8px;
  overflow: hidden;
}
.qty-stepper__btn {
  width: 44px; height: 44px; border: none; background: var(--md-surface-variant, #f0f0f0);
  font-size: 20px; font-weight: 600; cursor: pointer; color: var(--md-primary, #6750A4);
  display: flex; align-items: center; justify-content: center;
  transition: background .15s;
}
.qty-stepper__btn:active { background: var(--md-primary-container, #e0d6ff); }
.qty-stepper__input {
  flex: 1; border: none; border-left: 1px solid var(--md-outline-variant, #ccc);
  border-right: 1px solid var(--md-outline-variant, #ccc);
  text-align: center; font-size: 18px; font-weight: 600;
  padding: 10px 8px; min-width: 0;
  -moz-appearance: textfield;
}
.qty-stepper__input::-webkit-inner-spin-button,
.qty-stepper__input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-on-surface-var);
}

.hint {
  font-weight: 400;
  font-size: var(--font-size-xs);
  color: var(--color-outline);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"] {
  width: 100%;
  min-height: var(--touch-target);
  padding: var(--space-sm) var(--space-md);
  border: 1.5px solid var(--color-outline);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-on-surface);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

input.invalid {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px var(--color-error-bg);
}

.field-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
}

.search-input-wrapper,
.price-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input-wrapper input {
  flex: 1;
  padding-right: 2.25rem; /* room for the clear button */
}

.search-input-clear {
  position: absolute;
  right: var(--space-sm);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  padding: 0 var(--space-xs);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--color-on-surface-var);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.search-input-clear:hover {
  background: var(--color-surface-variant);
  color: var(--color-on-surface);
}

.currency-symbol {
  position: absolute;
  left: var(--space-md);
  color: var(--color-on-surface-var);
  font-size: var(--font-size-base);
  pointer-events: none;
}

.price-input-wrapper input { padding-left: calc(var(--space-md) + 14px); }

/* ─── Search Dropdown ────────────────────────────────────────────────────── */
.field-group--search { position: relative; }

.search-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 400;
  background: var(--color-surface);
  border: 1.5px solid var(--color-outline);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  max-height: 240px;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}

.search-result-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  min-height: var(--touch-target);
  cursor: pointer;
  border-bottom: 1px solid var(--color-surface-variant);
  gap: var(--space-sm);
  transition: background var(--transition-fast);
}

.search-result-item:last-child { border-bottom: none; }
.search-result-item:hover,
.search-result-item:focus { background: var(--color-primary-light); outline: none; }

.search-result-item__info {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  flex: 1;
  min-width: 0;
}

.search-result-item__name {
  font-size: var(--font-size-sm);
  white-space: normal;
  word-break: break-word;
  line-height: 1.4;
}

.search-result-item__history-btn {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  margin-top: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-secondary);
  border-radius: var(--radius-full);
  font-size: 16px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.search-result-item__history-btn:hover,
.search-result-item__history-btn:focus-visible {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.search-no-results {
  padding: var(--space-md);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
}

/* ─── 2-Layer Search: series + character rows ────────────────────────────── */
.search-result-item__actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.search-result-item__chevron {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 18px;
  color: var(--color-outline);
  cursor: pointer;
  transition: transform var(--transition-fast), color var(--transition-fast);
  user-select: none;
}

.search-result-item--expanded .search-result-item__chevron {
  transform: rotate(90deg);
  color: var(--color-primary);
}

.search-result-item--series {
  font-weight: 600;
}

/* Character rows indented under their series */
.search-result-chars {
  background: var(--color-background);
}

.search-result-item--char {
  padding-left: calc(var(--space-md) + 20px);
  background: var(--color-background);
  min-height: 36px;
}

.search-result-item--char:hover,
.search-result-item--char:focus {
  background: var(--color-primary-light);
}

.search-result-item__char-name {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background var(--transition-fast), opacity var(--transition-fast),
              transform var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

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

.btn-secondary {
  background: var(--color-surface-variant);
  color: var(--color-on-surface);
}
.btn-secondary:hover:not(:disabled) { background: #D8D0E8; }

.btn-text {
  /* background: transparent; */
  color: var(--color-primary);
  padding: var(--space-sm);
}
/* .btn-text:hover:not(:disabled) { background: var(--color-primary-light); } */

.btn-icon {
  background: transparent;
  border: none;
  color: var(--color-on-surface-var);
  width: var(--touch-target);
  height: var(--touch-target);
  padding: 0;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}
.btn-icon:hover { background: var(--color-surface-variant); }

.btn-sm { min-height: 36px; padding: var(--space-xs) var(--space-sm); font-size: var(--font-size-sm); }

.btn-full { width: 100%; }

.btn-toggle {
  background: var(--color-surface-variant);
  color: var(--color-on-surface-var);
  border-radius: var(--radius-full);
  padding: var(--space-xs) var(--space-md);
  min-height: 36px;
  font-size: var(--font-size-sm);
}

.btn-toggle--active {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

/* ─── Modal ──────────────────────────────────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
}

.modal.hidden { display: none !important; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-scrim);
  z-index: 0;
}

.modal-content {
  position: relative;
  z-index: 1;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  width: 100%;
  max-width: 560px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.modal-title {
  font-size: var(--font-size-md);
  font-weight: 600;
}

.modal-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
}

/* ─── History Toolbar ────────────────────────────────────────────────────── */
.history-toolbar {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  align-items: center;
}

/* Filter button stretches to fill remaining space */
.history-toolbar #filter-toggle-btn {
  flex: 1;
}

/* Icon+label buttons stay compact */
.btn-icon-label {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0 var(--space-sm);
  white-space: nowrap;
}

/* Active state for the Select button */
.btn-secondary--active {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

/* ─── Bulk Action Bar ────────────────────────────────────────────────────── */
.bulk-action-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: var(--color-surface-variant);
  border-bottom: 1px solid var(--color-outline);
}

.bulk-select-all {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex: 1;
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 600;
  user-select: none;
}

.bulk-select-all input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

/* Delete button in bulk action bar - subtle text style */
#bulk-delete-btn {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  padding: var(--space-xs) var(--space-sm);
}

#bulk-delete-btn:hover:not(:disabled) {
  background: rgba(179, 38, 30, 0.08);
}

#bulk-delete-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-danger {
  background: var(--color-error);
  color: #fff;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-danger:hover:not(:disabled),
.btn-danger:focus-visible:not(:disabled) {
  background: #8b1a14;
}

.btn-danger:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ─── History Row Checkbox ───────────────────────────────────────────────── */
.history-row__checkbox {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  cursor: pointer;
  accent-color: var(--color-primary);
  align-self: center;
}

.history-row--selectable {
  cursor: pointer;
}

.history-row--selectable:hover {
  background: var(--color-primary-light);
}

/* ─── CSV Import Modal ───────────────────────────────────────────────────── */
.modal-content--wide {
  max-width: 600px;
  max-height: 85dvh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.csv-hint {
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
  background: var(--color-surface-variant);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  word-break: break-all;
}

.csv-preview-wrapper {
  overflow-y: auto;
  flex: 1;
  border: 1px solid var(--color-surface-variant);
  border-radius: var(--radius-sm);
}

.csv-preview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-xs);
}

.csv-preview-table th {
  position: sticky;
  top: 0;
  background: var(--color-surface-variant);
  padding: 4px 6px;
  text-align: left;
  font-weight: 600;
  white-space: nowrap;
}

.csv-preview-table td {
  padding: 4px 6px;
  border-bottom: 1px solid var(--color-surface-variant);
  vertical-align: top;
  word-break: break-word;
}

.csv-row--ok td { background: var(--color-success-bg); }
.csv-row--error td { background: var(--color-error-bg); }

.csv-status { white-space: nowrap; font-weight: 600; }
.csv-row--ok .csv-status { color: var(--color-success); }
.csv-row--error .csv-status { color: var(--color-error); }

.csv-summary {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-on-surface-var);
  text-align: right;
}

/* ─── Price History Sheet ────────────────────────────────────────────────── */
.date-range-picker {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-surface-variant);
}

.date-range-picker .field-group { flex: 1; }
.date-range-picker label { font-size: var(--font-size-xs); }
.date-range-picker input { min-height: 36px; font-size: var(--font-size-sm); padding: var(--space-xs) var(--space-sm); }

.chart-container {
  padding: var(--space-md);
  position: relative;
  min-height: 200px;
}

.suggested-price {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-top: 1px solid var(--color-surface-variant);
}

.suggested-label {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
  font-weight: 500;
}

.suggested-toggle {
  display: flex;
  gap: var(--space-sm);
}

.suggested-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

/* ─── Toast ──────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: calc(56px + var(--space-lg) + var(--space-md));
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #323232;
  color: #fff;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  max-width: 520px;
  text-align: center;
  z-index: 600;
  opacity: 0;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  pointer-events: none;
}

.toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast--success { background: var(--color-success); }
.toast--error   { background: var(--color-error); }

/* ─── Bilingual Labels ───────────────────────────────────────────────────── */
.bilingual { display: flex; flex-direction: column; gap: 1px; }
.bilingual__zh { font-size: var(--font-size-base); }
.bilingual__en { font-size: var(--font-size-xs); color: var(--color-on-surface-var); }

/* ─── Utility ────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ─── Focus Visible ──────────────────────────────────────────────────────── */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* ─── Scrollbar (webkit) ─────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-surface-variant); border-radius: 2px; }

/* ─── Tab Bar ────────────────────────────────────────────────────────────── */
.tab-bar {
  position: fixed;
  bottom: 0;
  width: 100%;
  max-width: 600px;
  display: flex;
  z-index: 150;
  background: var(--color-surface);
  border-top: 1px solid var(--color-surface-variant);
  box-shadow: 0 -1px 4px rgba(0, 0, 0, 0.08);
  min-height: 56px;
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.tab-bar__tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-width: var(--touch-target);   /* 44 px */
  min-height: var(--touch-target);  /* 44 px */
  padding: var(--space-xs) var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-on-surface-var);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 500;
  position: relative;
  -webkit-tap-highlight-color: transparent;
  transition: color var(--transition-fast);
}

.tab-bar__tab:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* Active tab — driven by aria-selected="true" */
.tab-bar__tab[aria-selected="true"] {
  color: var(--color-primary);
  font-weight: 600;
}

.tab-bar__tab[aria-selected="true"] svg {
  /* Filled icon treatment: increase opacity / weight for selected state */
  fill: var(--color-primary);
  stroke: var(--color-primary);
}

.tab-bar__tab svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

/* ─── Filter Badge (on History tab button) ───────────────────────────────── */
.filter-badge {
  position: absolute;
  top: 4px;
  right: calc(50% - 18px);   /* offset right of the icon centre */
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: var(--radius-full);
  background: #D62828;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  border: 2px solid var(--color-surface);
  pointer-events: none;
}

/* ─── Filter Panel ───────────────────────────────────────────────────────── */
.filter-panel {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-surface-variant);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Ensure the hidden attribute wins over display:flex */
.filter-panel[hidden] {
  display: none !important;
}

/* Tab content panels — hidden attribute must win over flex-item display */
#add-tab-content[hidden],
#history-tab-content[hidden],
#catalog-tab-content[hidden] {
  display: none !important;
}

/* ─── Filter Group ───────────────────────────────────────────────────────── */
.filter-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.filter-group > label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-on-surface-var);
}

/* ─── Date Range Row ─────────────────────────────────────────────────────── */
.date-range-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.date-range-row input[type="date"] {
  flex: 1;
  min-height: 40px;
  font-size: var(--font-size-sm);
  padding: var(--space-xs) var(--space-sm);
}

.date-range-row span {
  flex-shrink: 0;
  color: var(--color-on-surface-var);
  font-size: var(--font-size-sm);
}

/* ─── Filter Chips Container ─────────────────────────────────────────────── */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ─── Filter Chip (merchant / generic) ──────────────────────────────────── */
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-outline);
  background: var(--color-surface);
  color: var(--color-on-surface);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 500;
  cursor: pointer;
  min-height: 32px;
  transition: background var(--transition-fast), border-color var(--transition-fast),
              color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.filter-chip:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
}

.filter-chip--selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
}

.filter-chip--selected:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

/* Dim chips with zero matching records */
.filter-chip--zero {
  opacity: 0.4;
}

/* ─── Brand Chip Selected State (in filter panel) ───────────────────────── */
.brand-chip--selected {
  outline: 2.5px solid var(--color-on-surface);
  outline-offset: 1px;
}

/* ─── Filter Item Input Wrapper ──────────────────────────────────────────── */
.filter-item-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.filter-item-input-wrapper input[type="text"] {
  flex: 1;
  padding-right: calc(var(--touch-target) + var(--space-xs));
}

.filter-item-input-wrapper .btn-icon {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: var(--touch-target);
  height: var(--touch-target);
}

/* ─── Add Series Modal ───────────────────────────────────────────────────── */

/* The modal itself is already modal-content--wide (max-height: 85dvh, flex column).
   Step 2 fills the remaining space and scrolls its item lists. */

#add-series-step2 {
  display: none;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  gap: var(--space-md);
}

#add-series-step2:not([hidden]) {
  display: flex;
}

/* Scrollable zone: both item sections together */
.add-series-items-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding-right: 2px;     /* prevent scrollbar from clipping content */
}

/* Step 1 form: scrollable on small screens */
#add-series-step1 {
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

#add-series-step1[hidden] {
  display: none;
}

/* Step indicator */
.add-series-steps {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) 0 var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
}

.add-series-step {
  padding: 2px 10px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-outline);
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.add-series-step--active {
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-color: var(--color-primary);
}

.add-series-step-sep {
  color: var(--color-outline);
  font-size: var(--font-size-md);
}

/* Series ID preview */
.series-id-preview {
  font-family: ui-monospace, 'SF Mono', 'Cascadia Code', monospace;
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
  min-height: var(--touch-target);
  display: flex;
  align-items: center;
}

/* Item name list (step 2) */
.item-name-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-xs);
}

.item-name-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.item-name-input {
  flex: 1;
  min-height: 40px;
  padding: var(--space-xs) var(--space-sm);
  border: 1.5px solid var(--color-outline);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--color-on-surface);
  background: var(--color-surface);
}

.item-name-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* Secret item ID badge variant */
.catalog-id-badge--secret {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 700;
}

/* Item section header (label + add button side by side) */
.item-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-xs);
}

/* Hint text when list is empty */
.item-list-hint {
  font-size: var(--font-size-xs);
  color: var(--color-outline);
  padding: var(--space-xs) 0;
}

/* Remove button on each item row */
.item-row-remove {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-error);
  border-radius: var(--radius-full);
  background: none;
  color: var(--color-error);
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  transition: background var(--transition-fast);
}

.item-row-remove:hover,
.item-row-remove:focus-visible {
  background: var(--color-error-bg);
  outline: none;
}

/* ─── Toggle Switch ──────────────────────────────────────────────────────── */
.toggle-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
}

.toggle-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--color-outline);
  border-radius: var(--radius-full);
  flex-shrink: 0;
  transition: background var(--transition-fast);
}

.toggle-label input:checked + .toggle-track {
  background: var(--color-primary);
}

.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.toggle-label input:checked + .toggle-track .toggle-thumb {
  transform: translateX(20px);
}

.toggle-text {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface);
}

.field-hint {
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
  margin-top: 2px;
}

/* ─── Search dropdown: whole-box label ──────────────────────────────────── */
.search-result-item__box-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--color-secondary);
  background: var(--color-surface-variant);
  padding: 1px 5px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  flex-shrink: 0;
  margin-left: 2px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   TODO List Tab — Styles
   Requirements: 1.3, 1.5, 3.4, 7.1, 7.2, 7.3, 8.1, 8.4
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─── Tab Badge (reusable — used on TODO tab button) ─────────────────────── */
/* Req 8.1, 8.4: badge visible when count > 0, hidden when empty             */
.tab-badge {
  position: absolute;
  top: 4px;
  right: calc(50% - 18px);   /* mirrors .filter-badge positioning */
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: var(--radius-full);
  background: #D62828;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  border: 2px solid var(--color-surface);
  pointer-events: none;
}

/* ─── TODO Tab Content: hidden-attribute override ────────────────────────── */
#todo-tab-content[hidden] {
  display: none !important;
}

/* ─── TODO Header Bar ────────────────────────────────────────────────────── */
/* Search bar at the top of the TODO tab                                     */
.todo-search-bar {
  position: relative;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--color-outline-variant);
  background: var(--color-surface);
}

/* Req 3.6: count label + Clear All button row at top of list                */
.todo-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-surface-variant);
  gap: var(--space-sm);
}

/* Req 3.6: total count label */
.todo-count-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-on-surface-var);
}

/* ─── TODO Item Card ─────────────────────────────────────────────────────── */
/* Req 3.4: card-style layout consistent with history-row / staging-card     */
.todo-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: 10px var(--space-md);
  border-bottom: 1px solid var(--color-surface-variant);
  background: var(--color-surface);
}

.todo-item:last-child {
  border-bottom: none;
}

/* Top row: body + delete button side by side */
.todo-item__top {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  width: 100%;
}

/* Body: grows to fill available width */
.todo-item__body {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

/* Actions: horizontal row below body */
.todo-item__actions {
  display: flex;
  flex-direction: row;
  gap: var(--space-sm);
  align-items: center;
  margin-top: var(--space-xs);
}

.todo-item__add-purchase {
  font-size: var(--font-size-xs);
}

.todo-item__delete {
  margin-left: auto;
}

/* Header row: brand chip + date side by side */
.todo-item__header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-bottom: 2px;
}

/* Primary name: character name (item-type) or series name (series-type) */
.todo-item__name {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-on-surface);
  overflow-wrap: break-word;
  word-wrap: break-word;
  line-height: 1.3;
  width: 100%;
}

/* Sub-line: series name shown only for item-type entries */
.todo-item__sub {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface-var);
  overflow-wrap: break-word;
  word-wrap: break-word;
}

/* ID badge: item ID or series ID in monospace */
.todo-item__id {
  font-size: var(--font-size-xs);
  font-family: ui-monospace, 'SF Mono', 'Cascadia Code', monospace;
  color: var(--color-on-surface-var);
  background: var(--color-surface-variant);
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  align-self: flex-start;
  letter-spacing: 0.02em;
}

/* Date added: small pill matching history-row__date style */
.todo-item__date {
  display: inline-flex;
  align-items: center;
  background: var(--color-secondary);
  color: #fff;
  font-size: var(--font-size-xs);
  font-weight: 600;
  white-space: nowrap;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  line-height: 1.4;
}

/* ─── TODO Item: Notes ──────────────────────────────────────────────────── */

.todo-item__notes {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.todo-item__notes-input {
  flex: 1;
  border: 1px solid var(--color-outline);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: var(--font-size-sm);
  color: var(--color-on-surface);
  background: var(--color-surface);
  transition: border-color 0.15s;
}

.todo-item__notes-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.todo-item__notes-input::placeholder {
  color: var(--color-on-surface-var);
  opacity: 0.6;
}

.todo-item__notes-count {
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
  white-space: nowrap;
}

/* ─── TODO: Add Preview Card ────────────────────────────────────────────── */

.todo-add-preview {
  padding: var(--space-md);
  background: var(--color-surface-container);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-md);
  margin: var(--space-sm) var(--space-md);
}

.todo-add-preview__header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.todo-add-preview__name {
  font-weight: 600;
  font-size: var(--font-size-base);
  color: var(--color-on-surface);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.todo-add-preview__fields {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-end;
  margin-bottom: var(--space-sm);
}

.todo-add-preview__field {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.todo-add-preview__field label {
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
}

.todo-add-preview__field input {
  border: 1px solid var(--color-outline);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: var(--font-size-sm);
  color: var(--color-on-surface);
  background: var(--color-surface);
}

.todo-add-preview__field input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.todo-add-preview__field input[type="number"] {
  width: 60px;
}

.todo-add-preview__field--notes {
  flex: 1;
}

.todo-add-preview__field--notes input {
  width: 100%;
}

.todo-add-preview__actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
}

/* ─── TODO: Loading & Error States ──────────────────────────────────────── */

#todo-loading {
  padding: var(--space-lg) var(--space-md);
  text-align: center;
}

#todo-error {
  padding: var(--space-md);
  text-align: center;
  color: var(--color-error);
  font-size: var(--font-size-sm);
}

/* ─── TODO: Quantity Badge ──────────────────────────────────────────────── */

.todo-item__qty {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-on-surface-var);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: var(--radius-full);
}

/* ─── TODO: Header Bar Actions ──────────────────────────────────────────── */

.todo-header-bar__actions {
  display: flex;
  gap: var(--space-xs);
}

/* ─── TODO: History Dialog ──────────────────────────────────────────────── */

.todo-history-list {
  max-height: 300px;
  overflow-y: auto;
  margin: var(--space-md) 0;
}

.todo-history-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-outline-variant);
}

.todo-history-row:last-child {
  border-bottom: none;
}

.todo-history-row__name {
  font-size: var(--font-size-sm);
  color: var(--color-on-surface);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.todo-history-row__status {
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  margin-left: var(--space-sm);
}

.todo-history-row__status--completed {
  background: #C8E6C9;
  color: #2E7D32;
}

.todo-history-row__status--deleted {
  background: #FFCDD2;
  color: #C62828;
}

.loading-text,
.empty-state-text,
.error-text {
  text-align: center;
  color: var(--color-on-surface-var);
  font-size: var(--font-size-sm);
  padding: var(--space-md);
}

/* ─── Catalog Row: TODO Extensions ──────────────────────────────────────── */

/* Req 7.1, 7.2: subtle highlight when the row's item/series is in TODO      */
.catalog-row--in-todo {
  background: var(--color-primary-light);
}

.catalog-row--in-todo:hover,
.catalog-row--in-todo:focus-visible {
  background: #DDD6F3;   /* slightly darker primary-light for hover contrast */
}

/* Req 6.5: temporary highlight when navigating to a catalog row from TODO   */
@keyframes catalog-row-flash {
  0%   { background: #FFF3CD; }
  60%  { background: #FFE082; }
  100% { background: transparent; }
}

.catalog-row--highlight {
  animation: catalog-row-flash 1.5s ease-out forwards;
}

/* Req 7.3: "Add to TODO" button — compact, fits within catalog rows         */
.catalog-row__todo-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-full);
  background: none;
  color: var(--color-primary);
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  padding: 0;
  transition: background var(--transition-fast), color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.catalog-row__todo-btn:hover,
.catalog-row__todo-btn:focus-visible {
  background: var(--color-primary-light);
  outline: none;
}

.catalog-row__todo-btn:active {
  transform: scale(0.92);
}

/* Req 7.3: "In TODO" indicator — checkmark badge shown when item is in list */
.catalog-row__todo-indicator {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: var(--color-on-primary);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  pointer-events: none;
}


/* ═══════════════════════════════════════════════════════════════
   SIDEBAR NAVIGATION
   ═══════════════════════════════════════════════════════════════ */

/* Hamburger toggle button */
.sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--color-on-surface, #1c1b1f);
  cursor: pointer;
  transition: background 0.2s ease;
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  background: var(--color-surface-variant, rgba(103, 80, 164, 0.08));
}

.sidebar-toggle:active {
  background: var(--color-surface-variant, rgba(103, 80, 164, 0.12));
}

/* Sidebar overlay (backdrop) */
.sidebar-overlay {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(0, 0, 0, 0.5);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.sidebar-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.sidebar-overlay.hidden {
  display: none;
}

/* Sidebar panel */
.sidebar-panel {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: min(280px, 75vw);
  z-index: 9001;
  background: #FAFAFA;
  box-shadow: 4px 0 24px rgba(0, 0, 0, 0.12);
  border-radius: 0 20px 20px 0;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.sidebar-overlay.visible .sidebar-panel {
  transform: translateX(0);
}

/* Sidebar header */
.sidebar-header {
  padding: 32px 24px 20px;
  background: linear-gradient(135deg, #5B4A8A 0%, #7C6BAF 100%);
}

.sidebar-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.02em;
}

.sidebar-subtitle {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

/* Navigation list */
.sidebar-nav-list {
  list-style: none;
  margin: 0;
  padding: 12px 8px;
}

/* Navigation item link */
.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  min-height: 48px;
  text-decoration: none;
  color: #49454F;
  font-size: 0.938rem;
  font-weight: 500;
  border-radius: 12px;
  margin-bottom: 4px;
  transition: background 0.15s ease, color 0.15s ease;
}

.sidebar-nav-item:hover {
  background: rgba(103, 80, 164, 0.06);
}

.sidebar-nav-item:active {
  background: rgba(103, 80, 164, 0.12);
}

.sidebar-nav-item--active {
  background: rgba(91, 74, 138, 0.1);
  color: #5B4A8A;
  font-weight: 600;
}

.sidebar-nav-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  width: 28px;
  text-align: center;
}

.sidebar-nav-label {
  flex: 1;
}

/* ─── Suggested Price Hint (on purchase entry form) ────────────────────────── */
.suggested-price-hint {
  padding: var(--space-sm) var(--space-md);
  margin: calc(-1 * var(--space-sm)) 0 var(--space-md);
  background: var(--color-primary-container, #EADDFF);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  color: var(--color-on-primary-container, #21005D);
}
.suggested-price-hint__main {
  font-weight: 500;
}
.suggested-price-hint__detail {
  font-size: var(--font-size-xs, 0.7rem);
  opacity: 0.8;
  margin-top: 2px;
}
.suggested-price-hint__tag {
  display: inline-block; padding: 1px 5px; border-radius: 4px;
  font-size: 10px; font-weight: 600; line-height: 1.4;
  vertical-align: middle;
}

/* ─── Calculator FAB ─────────────────────────────────────────────────────── */
.fab--calc {
  bottom: calc(56px + env(safe-area-inset-bottom, 0px) + var(--space-md) + 56px + var(--space-sm));
  background: var(--color-secondary, #625B71);
}
.fab--calc:hover { background: var(--color-secondary-dark, #4A4458); }

/* ─── Price Calculator Sheet ─────────────────────────────────────────────── */
.calc-body {
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.calc-field-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.calc-field-group[hidden] {
  display: none;
}

.calc-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-on-surface-var);
}

.calc-body input[type="number"] {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-outline);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-base);
  background: var(--color-surface);
  color: var(--color-on-surface);
  min-height: 44px;
  transition: border-color var(--transition-fast);
}

.calc-body input[type="number"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(103, 80, 164, 0.15);
}

.calc-toggle {
  display: flex;
  gap: var(--space-xs);
}

.calc-hint {
  font-size: var(--font-size-xs);
  color: var(--color-on-surface-var);
  opacity: 0.8;
}

.calc-result {
  margin-top: var(--space-sm);
  padding: var(--space-md);
  background: var(--color-primary-container, #EADDFF);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.calc-result-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-on-primary-container, #21005D);
}

.calc-result-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-on-primary-container, #21005D);
}


/* ─── Calculator Profit Tier Table ───────────────────────────────────────── */
.calc-tier-table {
  margin-top: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-surface-variant, #E7E0EC);
  border-radius: var(--radius-sm);
}

.calc-tier-summary {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-on-surface-var);
  cursor: pointer;
  padding: var(--space-xs) 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.calc-tier-summary::before {
  content: '▶';
  font-size: 10px;
  transition: transform var(--transition-fast);
}

.calc-tier-table[open] .calc-tier-summary::before {
  transform: rotate(90deg);
}

.calc-tier-summary::-webkit-details-marker {
  display: none;
}

.calc-tier-grid {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-xs);
}

.calc-tier-grid th {
  text-align: left;
  font-weight: 600;
  color: var(--color-on-surface-var);
  padding: 3px 8px 3px 0;
  border-bottom: 1px solid var(--color-outline);
}

.calc-tier-grid td {
  padding: 3px 8px 3px 0;
  color: var(--color-on-surface);
}

.calc-tier-grid tr.calc-tier--active td {
  font-weight: 700;
  color: var(--color-primary);
  background: rgba(103, 80, 164, 0.08);
}

.calc-tier-active {
  display: block;
  margin-top: var(--space-xs);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-primary);
}