/* ═══════════════════════════════════════════════════════════════
   BathBuilder — Visual Bathroom Configurator Styles
   Mobile-first, uses existing design tokens from global.css
   Phases A-E: transitions, skeleton, toast, a11y, onboarding,
               crossfade, progress bar, desktop layout
   ═══════════════════════════════════════════════════════════════ */

/* ── Design Tokens (BathBuilder-specific) ─────────────────── */
:root {
  --bb-success: #10B981;
  --bb-error: #EF4444;
  --bb-warning: #F59E0B;
  --bb-skeleton-base: #E5E7EB;
  --bb-skeleton-shine: #F3F4F6;
  --bb-selected-ring: rgba(27, 58, 92, 0.25);
  --bb-transition-step: 200ms ease;
}

/* ── Container ─────────────────────────────────────────────── */
.bb {
  font-family: var(--font-body, 'Inter', sans-serif);
  color: var(--color-gray-800, #332E2A);
  max-width: 1200px;
  margin: 0 auto;
  min-height: 60vh;
}

/* ── App Mode ────────────────────────────────────────────────────
   Natural page scroll.  Header sticks top, bottom bar fixed bottom.
   Page scrolls normally — no height locking, no overflow:hidden.
   ─────────────────────────────────────────────────────────────── */
.bb-page--app {
  padding: 0;
}
.bb-page--app .bb {
  max-width: 100%;
}
/* Fixed bottom bar — always visible at bottom of screen, full width */
.bb-page--app .bb-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
}
/* Space so content doesn't hide behind the fixed bar */
.bb-page--app .bb-configure {
  padding-bottom: 88px;
}

.bb-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 40vh;
}

.bb-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-gray-200, #E0DCD4);
  border-top-color: var(--color-primary, #1B3A5C);
  border-radius: 50%;
  animation: bb-spin 0.7s linear infinite;
}

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

/* ── Step Transitions (Phase A) ──────────────────────────── */
.bb-step {
  padding: var(--space-md, 1rem);
  opacity: 1;
  /* NOTE: no transform here — a permanent transform creates a new
     containing block that breaks position:fixed on descendants
     (side panel, fullscreen viewer, confirm overlay).
     The transition still animates from translateY(8px) → none. */
  transition: opacity var(--bb-transition-step), transform var(--bb-transition-step);
}

.bb-step--entering {
  opacity: 0;
  transform: translateY(8px);
}

/* ── Step Header ───────────────────────────────────────────── */
.bb-step-header {
  text-align: center;
  margin-bottom: var(--space-lg, 1.5rem);
}

.bb-title {
  font-family: var(--font-heading, 'Merriweather', serif);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: var(--weight-bold, 700);
  color: var(--color-primary, #1B3A5C);
  margin: 0 0 0.25rem;
}

.bb-subtitle {
  font-size: var(--text-sm, 0.875rem);
  color: var(--color-gray-500, #887E72);
  margin: 0;
}

.bb-section-title {
  font-size: var(--text-lg, 1.125rem);
  font-weight: var(--weight-semibold, 600);
  margin: 0 0 var(--space-md, 1rem);
}

/* ── Step Indicator (3 dots + text) ──────────────────────── */
.bb-step-indicator {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--space-lg, 1.5rem);
}

.bb-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-gray-200, #E0DCD4);
  transition: all var(--transition-fast, 200ms ease);
}

.bb-dot--active {
  background: var(--color-primary, #1B3A5C);
  transform: scale(1.2);
}

.bb-dot--completed {
  background: var(--bb-success);
}

.bb-step-text {
  display: none;
  font-size: var(--text-sm, 0.875rem);
  color: var(--color-gray-500, #887E72);
  margin-left: 8px;
}

/* ── Size Selection (Step 1) ───────────────────────────────── */
.bb-templates {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-md, 1rem);
  margin-bottom: var(--space-lg, 1.5rem);
}

.bb-template-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: var(--space-lg, 1.5rem) var(--space-md, 1rem);
  border: 2px solid var(--color-gray-200, #E0DCD4);
  border-radius: var(--radius-lg, 0.75rem);
  background: var(--color-white, #FFF);
  cursor: pointer;
  transition: all var(--transition-fast, 200ms ease);
  text-align: center;
}

.bb-template-card:hover {
  border-color: var(--color-primary, #1B3A5C);
  box-shadow: var(--shadow-md, 0 4px 12px rgba(0,0,0,0.1));
}

.bb-template-card--active {
  border-color: var(--color-primary, #1B3A5C);
  background: var(--color-gray-50, #F8F7F5);
  box-shadow: 0 0 0 3px var(--bb-selected-ring);
}

.bb-template-icon {
  color: var(--color-primary, #1B3A5C);
}

.bb-template-name {
  font-weight: var(--weight-semibold, 600);
  font-size: var(--text-base, 1rem);
}

.bb-template-range {
  font-size: var(--text-sm, 0.875rem);
  color: var(--color-gray-500, #887E72);
  font-variant-numeric: tabular-nums;
}

/* ── Surface Slider (Phase A: larger) ─────────────────────── */
.bb-surface-slider {
  max-width: 400px;
  margin: 0 auto var(--space-xl, 2rem);
}

.bb-slider-label {
  display: block;
  font-size: var(--text-sm, 0.875rem);
  margin-bottom: 8px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.bb-slider {
  width: 100%;
  height: 12px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-gray-200, #E0DCD4);
  border-radius: 6px;
  outline: none;
}

.bb-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary, #1B3A5C);
  cursor: pointer;
  border: 3px solid var(--color-white, #FFF);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.bb-slider::-moz-range-thumb {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary, #1B3A5C);
  cursor: pointer;
  border: 3px solid var(--color-white, #FFF);
}

.bb-slider-range {
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs, 0.75rem);
  color: var(--color-gray-400, #A8A095);
  margin-top: 4px;
}

/* ── Buttons ───────────────────────────────────────────────── */
.bb-actions {
  display: flex;
  justify-content: center;
  padding-top: var(--space-md, 1rem);
}

.bb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border: 2px solid transparent;
  border-radius: var(--radius-md, 0.5rem);
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: var(--text-base, 1rem);
  font-weight: var(--weight-semibold, 600);
  cursor: pointer;
  transition: all var(--transition-fast, 200ms ease);
  text-decoration: none;
  line-height: 1;
}

.bb-btn--primary {
  background: var(--color-primary, #1B3A5C);
  color: var(--color-white, #FFF);
}

.bb-btn--primary:hover {
  background: var(--color-primary-dark, #0F2540);
}

.bb-btn--outline {
  background: transparent;
  border-color: var(--color-gray-300, #C8C2B8);
  color: var(--color-gray-700, #4D4640);
}

.bb-btn--outline:hover {
  border-color: var(--color-primary, #1B3A5C);
  color: var(--color-primary, #1B3A5C);
}

.bb-btn--whatsapp {
  background: #25D366;
  color: #FFF;
}

.bb-btn--whatsapp:hover {
  background: #1DA851;
}

.bb-btn--sm {
  padding: 8px 16px;
  font-size: var(--text-sm, 0.875rem);
}

.bb-btn--disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* Button loading state (Phase B) */
.bb-btn--loading {
  pointer-events: none;
  opacity: 0.7;
}

.bb-btn--loading .bb-btn-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: bb-spin 0.6s linear infinite;
  margin-right: 6px;
  vertical-align: -2px;
}

/* ── Viewport (Layer Composition) ──────────────────────────── */
.bb-viewport-wrap {
  position: relative;
  margin-bottom: var(--space-sm, 0.75rem);
}

.bb-viewport {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--color-gray-100, #F0EDE8);
  border-radius: var(--radius-lg, 0.75rem);
  overflow: hidden;
  min-height: 50vh;
  max-height: 60vh;
}

.bb-viewport--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400, #A8A095);
}

/* Layer crossfade (Phase D) */
.bb-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 200ms ease-in-out;
}

.bb-layer--entering {
  opacity: 0;
}

/* Image error fallback (Phase B) */
.bb-layer--error {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-100, #F0EDE8);
  color: var(--color-gray-400, #A8A095);
  font-size: var(--text-sm, 0.875rem);
}

/* ── Skeleton Loading (Phase A) ──────────────────────────── */
.bb-skeleton {
  background: linear-gradient(90deg,
    var(--bb-skeleton-base) 25%,
    var(--bb-skeleton-shine) 50%,
    var(--bb-skeleton-base) 75%
  );
  background-size: 200% 100%;
  animation: bb-shimmer 1.5s infinite;
  border-radius: var(--radius-md, 0.5rem);
}

@keyframes bb-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.bb-skeleton-viewport {
  aspect-ratio: 4 / 3;
  min-height: 200px;
  border-radius: var(--radius-lg, 0.75rem);
}

.bb-skeleton-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: var(--space-md, 1rem);
}

.bb-skeleton-tab {
  width: 80px;
  height: 36px;
  border-radius: var(--radius-full, 999px);
}

/* skeleton-grid removed: now uses .bb-skeleton-carousel */

.bb-skeleton-card {
  aspect-ratio: 1;
  border-radius: var(--radius-md, 0.5rem);
}

/* ── Angle Dots ────────────────────────────────────────────── */
.bb-angle-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 8px 0;
}

.bb-angle-dot {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--color-gray-300, #C8C2B8);
  background: var(--color-white, #FFF);
  font-size: var(--text-xs, 0.75rem);
  font-weight: var(--weight-semibold, 600);
  cursor: pointer;
  transition: all var(--transition-fast, 200ms ease);
  color: var(--color-gray-500, #887E72);
}

.bb-angle-dot--active {
  border-color: var(--color-primary, #1B3A5C);
  background: var(--color-primary, #1B3A5C);
  color: var(--color-white, #FFF);
}

/* ── Swipe Hint (Phase D) ────────────────────────────────── */
.bb-swipe-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: var(--text-xs, 0.75rem);
  color: var(--color-gray-400, #A8A095);
  padding: 4px 0;
  animation: bb-swipe-fade 3s ease forwards;
}

.bb-swipe-hint svg {
  animation: bb-swipe-move 1.5s ease-in-out infinite;
}

@keyframes bb-swipe-move {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(6px); }
}

@keyframes bb-swipe-fade {
  0%, 80% { opacity: 1; }
  100% { opacity: 0; pointer-events: none; }
}

/* ── Filter Bar ───────────────────────────────────────────── */
.bb-filter-bar {
  display: flex;
  gap: 8px;
  margin-bottom: var(--space-sm, 0.75rem);
}

.bb-filter-input {
  flex: 1;
  min-width: 0;
  padding: 10px 14px;
  border: 1.5px solid var(--color-gray-200, #E0DCD4);
  border-radius: var(--radius-md, 0.5rem);
  font-size: var(--text-sm, 0.875rem);
  font-family: var(--font-body, 'Inter', sans-serif);
  background: var(--color-white, #FFF);
  color: var(--color-gray-800, #332E2A);
  outline: none;
  transition: border-color var(--transition-fast, 200ms ease);
}

.bb-filter-input:focus {
  border-color: var(--color-primary, #1B3A5C);
  box-shadow: 0 0 0 3px var(--bb-selected-ring);
}

.bb-filter-input::placeholder {
  color: var(--color-gray-400, #A8A095);
}

.bb-sort-select {
  padding: 10px 12px;
  border: 1.5px solid var(--color-gray-200, #E0DCD4);
  border-radius: var(--radius-md, 0.5rem);
  font-size: var(--text-sm, 0.875rem);
  font-family: var(--font-body, 'Inter', sans-serif);
  background: var(--color-white, #FFF);
  color: var(--color-gray-800, #332E2A);
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition-fast, 200ms ease);
  flex-shrink: 0;
  min-width: 0;
  max-width: 140px;
}

.bb-sort-select:focus {
  border-color: var(--color-primary, #1B3A5C);
  box-shadow: 0 0 0 3px var(--bb-selected-ring);
}

/* ── Option Count in Section Header ────────────────────── */
.bb-cat-section-count {
  font-size: var(--text-xs, 0.75rem);
  color: var(--color-gray-400, #A8A095);
  font-weight: var(--weight-normal, 400);
  margin-left: 4px;
}

/* ── Category Section ──────────────────────────────────── */
.bb-cat-section {
  margin-bottom: var(--space-md, 1rem);
  scroll-margin-top: 16px;
  position: relative;
}

.bb-cat-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
  padding-bottom: 0;
  border-bottom: none;
}

.bb-cat-section-name {
  font-size: var(--text-sm, 0.875rem);
  font-weight: var(--weight-medium, 500);
  color: var(--color-gray-500, #887E72);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.bb-cat-section-status {
  display: none;
}

/* Empty categories: subtle left accent to draw attention */
.bb-cat-section--empty {
  border-left: 3px solid var(--color-primary, #1B3A5C);
  padding-left: 10px;
}
.bb-cat-section--empty .bb-cat-section-name {
  color: var(--color-primary, #1B3A5C);
  font-weight: var(--weight-semibold, 600);
}

/* ── Horizontal Carousel ─────────────────────────────────── */
.bb-carousel {
  display: flex;
  gap: var(--space-sm, 0.75rem);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
  scrollbar-width: none;
  padding: 4px 0;
}

.bb-carousel::-webkit-scrollbar {
  display: none;
}

.bb-carousel--dragging {
  cursor: grabbing;
  scroll-snap-type: none;
  user-select: none;
}

.bb-carousel .bb-option-card {
  flex: 0 0 160px;
  scroll-snap-align: start;
}

/* ── Configure Panel ─────────────────────────────────────── */
.bb-configure-panel {
  min-width: 0;
}

/* ── Onboarding Tooltip (Phase D) ────────────────────────── */
.bb-onboarding-tooltip {
  position: relative;
  text-align: center;
  margin-top: 4px;
  animation: bb-tooltip-pulse 2s ease-in-out infinite;
}

.bb-onboarding-tooltip span {
  display: inline-block;
  background: var(--color-primary, #1B3A5C);
  color: var(--color-white, #FFF);
  font-size: var(--text-xs, 0.75rem);
  padding: 6px 12px;
  border-radius: var(--radius-md, 0.5rem);
}

.bb-onboarding-tooltip span::before {
  content: '';
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 5px solid var(--color-primary, #1B3A5C);
}

@keyframes bb-tooltip-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

/* ── Skeleton: Carousel Layout ────────────────────────────── */
.bb-skeleton-filter {
  height: 40px;
  margin-bottom: var(--space-sm, 0.75rem);
  border-radius: var(--radius-md, 0.5rem);
}

.bb-skeleton-section {
  margin-bottom: var(--space-lg, 1.5rem);
}

.bb-skeleton-section-title {
  width: 120px;
  height: 20px;
  margin-bottom: var(--space-sm, 0.75rem);
}

.bb-skeleton-carousel {
  display: flex;
  gap: var(--space-sm, 0.75rem);
  overflow: hidden;
}

.bb-skeleton-carousel .bb-skeleton-card {
  flex: 0 0 150px;
  aspect-ratio: 1;
}

.bb-option-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 0;
  background: var(--color-white, #FFF);
  cursor: pointer;
  transition: border-color var(--transition-fast, 200ms ease);
  text-align: center;
}

.bb-option-card:hover {
  border-color: var(--color-primary, #1B3A5C);
}

.bb-option-card--active {
  border-color: var(--color-primary, #1B3A5C);
}
.bb-option-card--active .bb-option-name {
  font-weight: var(--weight-bold, 700);
  color: var(--color-primary, #1B3A5C);
}
.bb-option-card--active .bb-option-price {
  font-weight: var(--weight-bold, 700);
}

.bb-option-thumb {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: 0;
  overflow: hidden;
  background: var(--color-gray-100, #F0EDE8);
}

.bb-option-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease;
}

.bb-option-card:hover .bb-option-thumb img {
  transform: scale(1.08);
}

.bb-option-thumb--none {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400, #A8A095);
}

.bb-option-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl, 1.5rem);
  font-weight: var(--weight-bold, 700);
  color: var(--color-gray-400, #A8A095);
}

.bb-option-name {
  font-size: var(--text-xs, 0.75rem);
  font-weight: var(--weight-medium, 500);
  line-height: 1.2;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.bb-option-price {
  font-size: var(--text-xs, 0.75rem);
  color: var(--color-accent-dark, #8A6A1F);
  font-weight: var(--weight-semibold, 600);
  font-variant-numeric: tabular-nums;
}

/* ── Bottom Bar (Montec-style: fixed height, category icons) ── */
.bb-bottom-bar {
  position: sticky;
  bottom: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 var(--space-md, 1rem);
  padding-bottom: env(safe-area-inset-bottom);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-top: 1px solid var(--color-gray-200, #E0DCD4);
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.06);
  gap: 8px;
}

.bb-bottom-left {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
  min-width: 0;
}

.bb-bottom-price {
  font-size: var(--text-lg, 1.125rem);
  font-weight: var(--weight-bold, 700);
  color: var(--color-primary, #1B3A5C);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.bb-bottom-more {
  background: none;
  border: none;
  color: var(--color-gray-500, #887E72);
  font-size: var(--text-xs, 0.75rem);
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 2px;
  text-align: left;
  white-space: nowrap;
}

.bb-bottom-more:hover {
  color: var(--color-primary, #1B3A5C);
}

.bb-bottom-cats {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  flex: 1;
  justify-content: center;
  padding: 0 4px;
  min-width: 0;
}

.bb-bottom-cats::-webkit-scrollbar { display: none; }

.bb-bottom-cat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 4px 6px;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: 6px;
  transition: all 150ms ease;
  flex-shrink: 0;
  min-width: 40px;
}

.bb-bottom-cat:hover {
  background: var(--color-gray-100, #F0EDE8);
}

.bb-bottom-cat--active {
  background: var(--color-gray-100, #F0EDE8);
}

.bb-bottom-cat--done .bb-bottom-cat-icon {
  color: var(--bb-success, #10B981);
}

.bb-bottom-cat--hidden {
  opacity: 0.3;
  pointer-events: none;
}

.bb-bottom-cat-icon {
  color: var(--color-gray-500, #887E72);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
}

.bb-bottom-cat-icon svg {
  width: 20px;
  height: 20px;
}

.bb-bottom-cat-label {
  font-size: 9px;
  color: var(--color-gray-600, #6B6258);
  white-space: nowrap;
  max-width: 52px;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.1;
}

.bb-bottom-cat--active .bb-bottom-cat-label {
  color: var(--color-primary, #1B3A5C);
  font-weight: var(--weight-medium, 500);
}

.bb-bottom-right {
  flex-shrink: 0;
}

/* ── Toast Notifications (Phase B) ───────────────────────── */
.bb-toast-container {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: calc(100vw - 32px);
  width: 380px;
  pointer-events: none;
}

.bb-toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--color-white, #FFF);
  border-radius: var(--radius-md, 0.5rem);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  border-left: 4px solid var(--color-gray-400, #A8A095);
  font-size: var(--text-sm, 0.875rem);
  pointer-events: auto;
  animation: bb-toast-in 300ms ease forwards;
}

.bb-toast--success {
  border-left-color: var(--bb-success);
}

.bb-toast--error {
  border-left-color: var(--bb-error);
}

.bb-toast--warning {
  border-left-color: var(--bb-warning);
}

.bb-toast--leaving {
  animation: bb-toast-out 200ms ease forwards;
}

.bb-toast-icon {
  flex-shrink: 0;
  font-size: 1.1rem;
}

.bb-toast-msg {
  flex: 1;
}

.bb-toast-close {
  flex-shrink: 0;
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px;
  color: var(--color-gray-400, #A8A095);
  font-size: 1rem;
  line-height: 1;
}

@keyframes bb-toast-in {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes bb-toast-out {
  from { opacity: 1; transform: translateY(0); }
  to { opacity: 0; transform: translateY(-12px); }
}

/* ── Focus Rings (Phase C) ───────────────────────────────── */
.bb-template-card:focus-visible,
.bb-option-card:focus-visible,
.bb-cat-tab:focus-visible,
.bb-angle-dot:focus-visible,
.bb-btn:focus-visible,
.bb-slider:focus-visible {
  outline: 3px solid var(--color-primary, #1B3A5C);
  outline-offset: 2px;
}

/* ── Summary (Step 3) ──────────────────────────────────────── */
.bb-summary-viewport {
  margin-bottom: var(--space-lg, 1.5rem);
}

.bb-breakdown {
  background: var(--color-gray-50, #F8F7F5);
  border-radius: var(--radius-lg, 0.75rem);
  padding: var(--space-lg, 1.5rem);
  margin-bottom: var(--space-lg, 1.5rem);
}

.bb-breakdown-title {
  font-size: var(--text-lg, 1.125rem);
  font-weight: var(--weight-semibold, 600);
  margin: 0 0 var(--space-sm, 0.75rem);
}

.bb-breakdown-surface {
  font-size: var(--text-sm, 0.875rem);
  color: var(--color-gray-500, #887E72);
  margin-bottom: var(--space-md, 1rem);
  padding-bottom: var(--space-sm, 0.75rem);
  border-bottom: 1px solid var(--color-gray-200, #E0DCD4);
}

.bb-breakdown-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.bb-breakdown-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--color-gray-200, #E0DCD4);
  font-size: var(--text-sm, 0.875rem);
}

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

.bb-breakdown-cat {
  font-weight: var(--weight-medium, 500);
  min-width: 80px;
  flex-shrink: 0;
}

.bb-breakdown-opt {
  flex: 1;
  color: var(--color-gray-500, #887E72);
}

.bb-breakdown-opt small {
  font-size: var(--text-xs, 0.75rem);
  color: var(--color-gray-400, #A8A095);
}

.bb-breakdown-cost {
  font-weight: var(--weight-semibold, 600);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.bb-breakdown-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-md, 1rem);
  padding-top: var(--space-md, 1rem);
  border-top: 2px solid var(--color-primary, #1B3A5C);
  font-size: var(--text-lg, 1.125rem);
}

.bb-breakdown-total strong {
  font-size: var(--text-xl, 1.25rem);
  color: var(--color-primary, #1B3A5C);
  font-variant-numeric: tabular-nums;
}

.bb-summary-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm, 0.75rem);
  align-items: flex-start;
  margin-bottom: var(--space-lg, 1.5rem);
}

.bb-summary-actions .bb-btn {
  min-width: 120px;
}

.bb-email-share {
  width: 100%;
  margin-top: var(--space-xs, 0.25rem);
}

.bb-email-input-wrap {
  display: flex;
  gap: 0;
  border-radius: var(--radius-sm, 6px);
  overflow: hidden;
  border: 1px solid var(--color-border, #e5e7eb);
}

.bb-email-input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  border: none;
  outline: none;
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--color-bg, #fff);
  color: var(--color-text, #374151);
  min-width: 0;
}

.bb-email-input::placeholder {
  color: var(--color-muted, #9ca3af);
}

.bb-email-input-wrap .bb-btn {
  border-radius: 0;
  border: none;
  flex-shrink: 0;
}

.bb-email-status {
  display: block;
  font-size: 0.75rem;
  margin-top: 4px;
  min-height: 1em;
}

.bb-email-status--ok {
  color: var(--bb-success);
}

.bb-email-status--error {
  color: var(--bb-error);
}

/* Lead capture form */
.bb-lead-section {
  background: var(--color-bg-alt, #f9fafb);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-md, 8px);
  padding: var(--space-lg, 1.5rem);
  margin-bottom: var(--space-lg, 1.5rem);
}

.bb-lead-title {
  font-family: var(--font-heading, system-ui, sans-serif);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--color-text, #111827);
}

.bb-lead-subtitle {
  font-size: 0.875rem;
  color: var(--color-muted, #6b7280);
  margin: 0 0 var(--space-md, 1rem);
}

.bb-lead-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm, 0.75rem);
}

.bb-lead-input {
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-sm, 6px);
  font-size: 0.875rem;
  font-family: inherit;
  background: var(--color-bg, #fff);
  color: var(--color-text, #374151);
  outline: none;
  transition: border-color 0.15s;
}

.bb-lead-input:focus {
  border-color: var(--color-primary, #1b3a5c);
  outline: 2px solid var(--bb-selected-ring);
}

.bb-lead-input::placeholder {
  color: var(--color-muted, #9ca3af);
}

.bb-lead-status {
  display: block;
  font-size: 0.75rem;
  min-height: 1em;
}

.bb-lead-status--error {
  color: var(--bb-error);
}

.bb-lead-done {
  text-align: center;
  color: var(--bb-success);
  font-weight: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.bb-lead-check {
  font-size: 1.5rem;
}

/* ── Reserve Section ─────────────────────────────────────── */
.bb-reserve-section {
  padding: 1.5rem;
  text-align: center;
  border-top: 2px solid var(--color-primary, #1b3a5c);
}

.bb-btn--reserve {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  background: var(--color-primary, #1b3a5c);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  width: 100%;
  max-width: 360px;
}

.bb-btn--reserve:hover {
  background: var(--color-primary-dark, #142d47);
  transform: translateY(-1px);
}

.bb-btn--reserve:active {
  transform: translateY(0);
}

.bb-btn--reserve:disabled {
  opacity: 0.6;
  cursor: wait;
}

.bb-reserve-status {
  display: block;
  margin-top: 8px;
  font-size: 0.85rem;
}

.bb-reserve-status--error {
  color: var(--bb-error);
}

.bb-summary-nav {
  display: flex;
  justify-content: center;
  padding-bottom: var(--space-xl, 2rem);
  padding-bottom: max(var(--space-xl, 2rem), env(safe-area-inset-bottom));
}

/* ── Error Retry State (Phase B) ─────────────────────────── */
.bb-error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 40vh;
  gap: var(--space-md, 1rem);
  text-align: center;
  padding: var(--space-xl, 2rem);
}

.bb-error-icon {
  font-size: 2rem;
  color: var(--bb-error);
}

.bb-error-msg {
  font-size: var(--text-sm, 0.875rem);
  color: var(--color-gray-500, #887E72);
  max-width: 300px;
}

/* ── Desktop Layout (>=768px) ─────────────────────────────── */
@media (min-width: 768px) {
  .bb-step {
    padding: var(--space-xl, 2rem);
  }

  .bb-title {
    font-size: var(--text-3xl, 1.875rem);
  }

  .bb-step-text {
    display: inline;
  }

  .bb-templates {
    grid-template-columns: repeat(3, 1fr);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }

  .bb-viewport {
    min-height: auto;
    max-height: none;
  }

  /* Toast position: top-right on desktop */
  .bb-toast-container {
    left: auto;
    right: 16px;
    transform: none;
  }

  /* Configure step: side-by-side layout */
  .bb-configure {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    grid-template-rows: 1fr auto;
    gap: 0 var(--space-xl, 2rem);
    align-items: start;
  }

  .bb-configure .bb-viewport-wrap {
    grid-column: 1;
    grid-row: 1;
    position: sticky;
    top: calc(var(--header-height, 72px) + var(--space-md, 1rem));
    max-width: 800px;
  }

  .bb-configure .bb-configure-panel {
    grid-column: 2;
    grid-row: 1;
    max-height: 80vh;
    overflow-y: auto;
    scrollbar-width: thin;
  }

  .bb-configure .bb-bottom-bar {
    grid-column: 1 / -1;
    grid-row: 2;
    position: sticky;
    bottom: 0;
    margin: 0 calc(var(--space-xl, 2rem) * -1);
    padding: 0 var(--space-xl, 2rem);
  }

  /* Desktop: carousel becomes a wrapping grid */
  .bb-carousel {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    overflow-x: visible;
    scroll-snap-type: none;
  }
  .bb-carousel .bb-option-card {
    flex: none;
  }

  /* Category header: horizontal on desktop */
  .bb-cat-section {
    padding-left: 0;
  }

  .bb-cat-section-header {
    position: relative;
    margin-bottom: 8px;
  }

  .bb-cat-section-count { display: none; }

  .bb-bottom-cat-label {
    font-size: 10px;
    max-width: 64px;
  }
}

@media (min-width: 1024px) {
  .bb-configure .bb-viewport-wrap {
    max-width: 800px;
  }
}

/* ── 1440px Breakpoint ───────────────────────────────────── */
@media (min-width: 1440px) {
  .bb {
    max-width: 1400px;
  }

  .bb-configure {
    grid-template-columns: 1.4fr 1fr;
    gap: 0 var(--space-2xl, 3rem);
  }

  .bb-configure .bb-viewport-wrap {
    max-width: 960px;
  }

  .bb-templates {
    max-width: 700px;
  }

  .bb-summary {
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
  }
}

/* ── App Mode — Desktop overrides ───────────────────────────── */
@media (min-width: 768px) {
  /* Panel: no internal scroll — page scrolls naturally,
     viewport sticks below header via sticky positioning */
  .bb-page--app .bb-configure .bb-configure-panel {
    max-height: none;
    overflow-y: visible;
  }
  /* Bottom bar: fixed at bottom, taken OUT of the grid flow */
  .bb-page--app .bb-configure .bb-bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    grid-column: auto;
    grid-row: auto;
    margin: 0;
    padding: 0 var(--space-xl, 2rem);
  }
}

/* ── Save Status Indicator (Gap 1) ─────────────────────────── */
.bb-save-status {
  font-size: var(--text-xs, 0.75rem);
  font-weight: var(--weight-normal, 400);
  margin-left: 6px;
  transition: opacity 0.3s ease;
}

.bb-save-status--saving {
  color: var(--color-gray-400, #A8A095);
}

.bb-save-status--saved {
  color: var(--bb-success, #10B981);
}

.bb-save-status--error {
  color: var(--bb-error, #EF4444);
}

/* ── Screen Reader Only (Gap 2) ────────────────────────────── */
.bb-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;
}

/* ── Viewport Expand Button ─────────────────────────────────── */
.bb-viewport-expand {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 5;
  background: rgba(255, 255, 255, 0.85);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-gray-600, #6B6258);
  transition: all 150ms ease;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.bb-viewport-expand:hover {
  background: rgba(255, 255, 255, 1);
  color: var(--color-primary, #1B3A5C);
  transform: scale(1.1);
}

/* ── Side Panel (More Options) ─────────────────────────────── */
.bb-side-panel {
  position: fixed;
  inset: 0;
  z-index: 100;
  visibility: hidden;
  pointer-events: none;
}

.bb-side-panel--open {
  visibility: visible;
  pointer-events: auto;
}

.bb-side-panel-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0);
  transition: background 300ms ease;
}

.bb-side-panel--open .bb-side-panel-backdrop {
  background: rgba(0, 0, 0, 0.4);
}

.bb-side-panel-content {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  max-width: 85vw;
  background: var(--color-white, #FFF);
  transform: translateX(100%);
  transition: transform 300ms ease;
  overflow-y: auto;
}

.bb-side-panel--open .bb-side-panel-content {
  transform: translateX(0);
}

.bb-side-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg, 1.5rem) var(--space-md, 1rem) var(--space-md, 1rem);
}

.bb-side-panel-title {
  font-size: var(--text-lg, 1.125rem);
  font-weight: var(--weight-semibold, 600);
  color: var(--color-gray-800, #332E2A);
  margin: 0;
}

.bb-side-panel-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-gray-500, #887E72);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.bb-side-panel-close:hover {
  background: var(--color-gray-100, #F0EDE8);
}

.bb-side-panel-items {
  padding: 0 var(--space-md, 1rem);
}

.bb-side-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 0;
  border: none;
  background: none;
  cursor: pointer;
  font-size: var(--text-base, 1rem);
  color: var(--color-gray-700, #4D4640);
  border-bottom: 1px solid var(--color-gray-100, #F0EDE8);
  transition: color 150ms ease;
  text-align: left;
}

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

.bb-side-item:hover {
  color: var(--color-primary, #1B3A5C);
}

.bb-side-item svg {
  flex-shrink: 0;
}

.bb-side-item--danger {
  color: var(--bb-error, #EF4444);
}

.bb-side-item--danger:hover {
  color: #c0392b;
}

/* ── Confirm Dialog ────────────────────────────────────────── */
.bb-confirm-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0);
  transition: background 200ms ease;
  padding: var(--space-md, 1rem);
}

.bb-confirm-overlay--open {
  background: rgba(0, 0, 0, 0.5);
}

.bb-confirm-dialog {
  background: var(--color-white, #FFF);
  border-radius: var(--radius-lg, 0.75rem);
  padding: var(--space-xl, 2rem);
  max-width: 360px;
  width: 100%;
  opacity: 0;
  transform: scale(0.95);
  transition: all 200ms ease;
}

.bb-confirm-overlay--open .bb-confirm-dialog {
  opacity: 1;
  transform: scale(1);
}

.bb-confirm-title {
  font-size: var(--text-lg, 1.125rem);
  font-weight: var(--weight-semibold, 600);
  margin: 0 0 8px;
}

.bb-confirm-message {
  font-size: var(--text-sm, 0.875rem);
  color: var(--color-gray-500, #887E72);
  margin: 0 0 var(--space-lg, 1.5rem);
}

.bb-confirm-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.bb-btn--danger {
  background: var(--bb-error, #EF4444);
  color: var(--color-white, #FFF);
  border: none;
  border-radius: var(--radius-md, 0.5rem);
  padding: 10px 20px;
  font-weight: var(--weight-semibold, 600);
  cursor: pointer;
  transition: background 150ms ease;
}

.bb-btn--danger:hover {
  background: #DC2626;
}

/* ── Fullscreen Photo Viewer ───────────────────────────────── */
.bb-fullscreen-viewer {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0);
  display: flex;
  flex-direction: column;
  transition: background 200ms ease;
}

.bb-fullscreen-viewer--open {
  background: rgba(0, 0, 0, 0.95);
}

.bb-fs-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md, 1rem);
  color: var(--color-white, #FFF);
  opacity: 0;
  transition: opacity 200ms ease;
}

.bb-fullscreen-viewer--open .bb-fs-header {
  opacity: 1;
}

.bb-fs-angle {
  font-size: var(--text-sm, 0.875rem);
  opacity: 0.7;
}

.bb-fs-close {
  background: none;
  border: none;
  color: var(--color-white, #FFF);
  font-size: 28px;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.bb-fs-close:hover {
  background: rgba(255, 255, 255, 0.1);
}

.bb-fs-canvas {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  padding: 0 var(--space-md, 1rem);
  opacity: 0;
  transition: opacity 200ms ease;
}

.bb-fullscreen-viewer--open .bb-fs-canvas {
  opacity: 1;
}

.bb-fs-canvas .bb-viewport {
  max-width: 90vw;
  max-height: 70vh;
  width: auto;
  height: auto;
  cursor: zoom-in;
}

.bb-fs-controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: var(--space-md, 1rem);
  opacity: 0;
  transition: opacity 200ms ease;
}

.bb-fullscreen-viewer--open .bb-fs-controls {
  opacity: 1;
}

.bb-fs-dots {
  display: flex;
  gap: 8px;
}

.bb-fs-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.3);
  background: none;
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--text-sm, 0.875rem);
  cursor: pointer;
  transition: all 150ms ease;
}

.bb-fs-dot:hover {
  border-color: rgba(255, 255, 255, 0.6);
}

.bb-fs-dot--active {
  border-color: var(--color-white, #FFF);
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white, #FFF);
}

.bb-fs-hint {
  font-size: var(--text-xs, 0.75rem);
  color: rgba(255, 255, 255, 0.4);
}

/* ═══════════════════════════════════════════════════════════════
   App Mode — CLEAN SLATE (will rebuild incrementally)
   ═══════════════════════════════════════════════════════════════ */