/* ============================================================
 * BIG STORE AI Assistant — Widget Styles
 * Mobile-first, commercial-grade design
 * Brand colors: BIG STORE Red #D4001E, Dark #1A1A2E
 * ============================================================ */

:root {
  --bs-red: #D4001E;
  --bs-red-dark: #AA0018;
  --bs-red-light: #FF3347;
  --bs-dark: #1A1A2E;
  --bs-dark-2: #16213E;
  --bs-gray: #6B7280;
  --bs-gray-light: #F3F4F6;
  --bs-border: #E5E7EB;
  --bs-white: #FFFFFF;
  --bs-text: #111827;
  --bs-text-light: #6B7280;
  --bs-success: #059669;
  --bs-warning: #D97706;
  --bs-info: #2563EB;
  --bs-shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
  --bs-shadow: 0 4px 16px rgba(0,0,0,0.14), 0 2px 8px rgba(0,0,0,0.1);
  --bs-shadow-lg: 0 20px 48px rgba(0,0,0,0.18), 0 8px 24px rgba(0,0,0,0.12);
  --bs-radius: 12px;
  --bs-radius-sm: 8px;
  --bs-radius-lg: 16px;
  --bs-transition: 240ms cubic-bezier(0.4, 0, 0.2, 1);
  --widget-z: 2147483600;
}

/* ─── Reset ───────────────────────────────────────────────────────────────── */
.bs-widget * {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

/* ─── Launcher Button ────────────────────────────────────────────────────── */
#bs-launcher {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: var(--widget-z);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--bs-red);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(212, 0, 30, 0.45);
  transition: transform var(--bs-transition), box-shadow var(--bs-transition);
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

#bs-launcher:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 28px rgba(212, 0, 30, 0.55);
}

#bs-launcher:active {
  transform: scale(0.96);
}

#bs-launcher img.bs-launcher-mascot {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
}

#bs-launcher .bs-launcher-close-icon {
  width: 22px;
  height: 22px;
  fill: white;
  display: none;
}

#bs-launcher.open .bs-launcher-mascot { display: none; }
#bs-launcher.open .bs-launcher-close-icon { display: block; }

.bs-launcher-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  background: var(--bs-dark);
  color: white;
  font-size: 11px;
  font-weight: 700;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  border: 2px solid white;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  letter-spacing: -0.3px;
}

/* ─── Chat Panel ─────────────────────────────────────────────────────────── */
#bs-panel {
  position: fixed;
  z-index: calc(var(--widget-z) - 1);
  background: var(--bs-white);
  display: flex;
  flex-direction: column;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  overflow: hidden;
  transition: opacity var(--bs-transition), transform var(--bs-transition);
  transform-origin: bottom right;
}

/* Mobile: full-height bottom sheet */
@media (max-width: 639px) {
  #bs-panel {
    bottom: 0;
    left: 0;
    right: 0;
    top: 0;
    border-radius: 0;
    width: 100%;
    height: 100%;
    transform: translateY(100%);
  }

  #bs-panel.open {
    transform: translateY(0);
  }

  #bs-panel.closed {
    transform: translateY(100%);
    opacity: 0;
    pointer-events: none;
  }
}

/* Desktop: floating panel */
@media (min-width: 640px) {
  #bs-panel {
    bottom: 90px;
    right: 20px;
    width: 400px;
    height: 600px;
    max-height: calc(100vh - 110px);
    border-radius: var(--bs-radius-lg);
    box-shadow: var(--bs-shadow-lg);
    border: 1px solid var(--bs-border);
    transform: scale(0.92) translateY(12px);
    opacity: 0;
  }

  #bs-panel.open {
    transform: scale(1) translateY(0);
    opacity: 1;
  }

  #bs-panel.closed {
    transform: scale(0.92) translateY(12px);
    opacity: 0;
    pointer-events: none;
  }
}

/* ─── Panel Header ─────────────────────────────────────────────────────────── */
.bs-header {
  background: var(--bs-dark);
  padding: 14px 16px 12px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  position: relative;
}

/* Safe area for mobile notch */
@media (max-width: 639px) {
  .bs-header {
    padding-top: max(14px, env(safe-area-inset-top, 14px));
  }
}

.bs-header-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.15);
  overflow: hidden;
  flex-shrink: 0;
}

.bs-header-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bs-header-info {
  flex: 1;
  min-width: 0;
}

.bs-header-name {
  color: white;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.2px;
}

.bs-header-status {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 2px;
}

.bs-header-status-dot {
  width: 6px;
  height: 6px;
  background: #22C55E;
  border-radius: 50%;
  animation: bs-pulse 2s infinite;
}

@keyframes bs-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.bs-header-actions {
  display: flex;
  gap: 4px;
}

.bs-header-btn {
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255,255,255,0.1);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.7);
  transition: background var(--bs-transition), color var(--bs-transition);
  -webkit-tap-highlight-color: transparent;
}

.bs-header-btn:hover {
  background: rgba(255,255,255,0.18);
  color: white;
}

/* ─── Messages Area ─────────────────────────────────────────────────────────── */
.bs-messages {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
}

.bs-messages::-webkit-scrollbar { width: 4px; }
.bs-messages::-webkit-scrollbar-track { background: transparent; }
.bs-messages::-webkit-scrollbar-thumb { background: var(--bs-border); border-radius: 2px; }

/* ─── Welcome State ─────────────────────────────────────────────────────────── */
.bs-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px 16px 16px;
  gap: 12px;
}

.bs-welcome-mascot {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 3px solid var(--bs-red);
  overflow: hidden;
}

.bs-welcome-mascot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bs-welcome-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--bs-text);
  letter-spacing: -0.3px;
}

.bs-welcome-subtitle {
  font-size: 14px;
  color: var(--bs-text-light);
  line-height: 1.5;
  max-width: 280px;
}

/* ─── Message Bubbles ─────────────────────────────────────────────────────── */
.bs-message {
  display: flex;
  gap: 8px;
  max-width: 100%;
}

.bs-message.user {
  flex-direction: row-reverse;
}

.bs-message-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex-shrink: 0;
  overflow: hidden;
  border: 1.5px solid var(--bs-border);
}

.bs-message-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bs-message-avatar.user-avatar {
  background: var(--bs-dark);
  display: flex;
  align-items: center;
  justify-content: center;
}

.bs-message-avatar.user-avatar svg {
  width: 16px;
  height: 16px;
  fill: white;
}

.bs-message-bubble {
  max-width: calc(100% - 44px);
}

.bs-message.user .bs-message-bubble {
  align-items: flex-end;
}

.bs-bubble-text {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--bs-text);
}

.bs-message.assistant .bs-bubble-text {
  background: var(--bs-gray-light);
  border-bottom-left-radius: 4px;
}

.bs-message.user .bs-bubble-text {
  background: var(--bs-dark);
  color: white;
  border-bottom-right-radius: 4px;
}

.bs-bubble-text strong {
  font-weight: 600;
}

.bs-bubble-text ul {
  padding-left: 16px;
  margin-top: 6px;
}

.bs-bubble-text li {
  margin-bottom: 4px;
}

/* ─── Product Card ─────────────────────────────────────────────────────────── */
.bs-product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  width: 100%;
}

@media (max-width: 380px) {
  .bs-product-grid { grid-template-columns: 1fr; }
}

.bs-product-card {
  background: white;
  border: 1.5px solid var(--bs-border);
  border-radius: var(--bs-radius);
  overflow: hidden;
  transition: border-color var(--bs-transition), box-shadow var(--bs-transition);
  position: relative;
}

.bs-product-card:hover {
  border-color: var(--bs-red);
  box-shadow: var(--bs-shadow-sm);
}

.bs-product-img-wrap {
  aspect-ratio: 1/1;
  overflow: hidden;
  background: #F9FAFB;
  position: relative;
}

.bs-product-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 8px;
  transition: transform var(--bs-transition);
}

.bs-product-card:hover .bs-product-img-wrap img {
  transform: scale(1.04);
}

.bs-product-badge {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--bs-red);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 20px;
  letter-spacing: 0.2px;
  text-transform: uppercase;
}

.bs-product-badge.compat {
  background: var(--bs-success);
}

.bs-product-body {
  padding: 8px 10px 10px;
}

.bs-product-vendor {
  font-size: 10px;
  font-weight: 700;
  color: var(--bs-red);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 3px;
}

.bs-product-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--bs-text);
  line-height: 1.4;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.bs-product-price-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.bs-product-price {
  font-size: 14px;
  font-weight: 700;
  color: var(--bs-text);
  white-space: nowrap;
}

.bs-product-compare {
  font-size: 11px;
  color: var(--bs-gray);
  text-decoration: line-through;
  white-space: nowrap;
}

.bs-product-savings {
  font-size: 10px;
  font-weight: 700;
  color: var(--bs-success);
  background: rgba(5, 150, 105, 0.1);
  padding: 1px 5px;
  border-radius: 10px;
}

.bs-availability {
  font-size: 11px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.bs-availability.in-stock { color: var(--bs-success); }
.bs-availability.order { color: var(--bs-warning); }
.bs-availability.out { color: var(--bs-gray); }

.bs-product-actions {
  display: flex;
  gap: 6px;
}

.bs-btn-add-cart {
  flex: 1;
  padding: 7px 0;
  background: var(--bs-red);
  color: white;
  border: none;
  border-radius: var(--bs-radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--bs-transition);
  -webkit-tap-highlight-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}

.bs-btn-add-cart:hover { background: var(--bs-red-dark); }
.bs-btn-add-cart:active { transform: scale(0.97); }
.bs-btn-add-cart:disabled {
  background: var(--bs-gray);
  cursor: not-allowed;
}

.bs-btn-add-cart.loading {
  pointer-events: none;
}

.bs-btn-view {
  width: 30px;
  height: 30px;
  background: var(--bs-gray-light);
  border: none;
  border-radius: var(--bs-radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bs-gray);
  transition: background var(--bs-transition), color var(--bs-transition);
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}

.bs-btn-view:hover {
  background: var(--bs-border);
  color: var(--bs-text);
}

/* ─── Bundle Card ─────────────────────────────────────────────────────────── */
.bs-bundle-card {
  border: 1.5px solid var(--bs-border);
  border-radius: var(--bs-radius);
  overflow: hidden;
  background: white;
}

.bs-bundle-header {
  background: var(--bs-dark);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.bs-bundle-icon {
  width: 32px;
  height: 32px;
  background: var(--bs-red);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bs-bundle-icon svg { width: 18px; height: 18px; fill: white; }

.bs-bundle-title {
  font-size: 14px;
  font-weight: 700;
  color: white;
  flex: 1;
  line-height: 1.3;
}

.bs-bundle-savings-chip {
  background: var(--bs-success);
  color: white;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
  white-space: nowrap;
}

.bs-bundle-items {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bs-bundle-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bs-bundle-item-img {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  object-fit: contain;
  background: var(--bs-gray-light);
  padding: 4px;
  flex-shrink: 0;
}

.bs-bundle-item-info {
  flex: 1;
  min-width: 0;
}

.bs-bundle-item-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--bs-text);
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bs-bundle-item-role {
  font-size: 10px;
  color: var(--bs-text-light);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 1px;
}

.bs-bundle-item-price {
  font-size: 13px;
  font-weight: 700;
  color: var(--bs-text);
  flex-shrink: 0;
}

.bs-bundle-footer {
  padding: 12px 14px;
  background: var(--bs-gray-light);
  border-top: 1px solid var(--bs-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.bs-bundle-total {
  display: flex;
  flex-direction: column;
}

.bs-bundle-total-label {
  font-size: 11px;
  color: var(--bs-text-light);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.bs-bundle-total-price {
  font-size: 18px;
  font-weight: 800;
  color: var(--bs-text);
  letter-spacing: -0.5px;
}

.bs-btn-bundle-cart {
  padding: 9px 16px;
  background: var(--bs-red);
  color: white;
  border: none;
  border-radius: var(--bs-radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--bs-transition);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.bs-btn-bundle-cart:hover { background: var(--bs-red-dark); }

/* ─── Comparison Table ─────────────────────────────────────────────────────── */
.bs-compare-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1.5px solid var(--bs-border);
  border-radius: var(--bs-radius);
}

.bs-compare-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 320px;
  font-size: 12px;
}

.bs-compare-table th,
.bs-compare-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--bs-border);
  vertical-align: top;
}

.bs-compare-table th {
  background: var(--bs-gray-light);
  font-weight: 600;
  color: var(--bs-text);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  position: sticky;
  left: 0;
  z-index: 1;
}

.bs-compare-table .bs-compare-product-header {
  background: var(--bs-dark);
  color: white;
  font-size: 11px;
  font-weight: 600;
  text-align: center;
  line-height: 1.3;
  max-width: 120px;
}

.bs-compare-table .recommended-col {
  background: rgba(212, 0, 30, 0.04);
}

/* ─── Compatibility Badge ────────────────────────────────────────────────── */
.bs-compat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
}

.bs-compat-badge.confirmed { background: rgba(5,150,105,0.12); color: var(--bs-success); }
.bs-compat-badge.likely { background: rgba(217,119,6,0.12); color: var(--bs-warning); }
.bs-compat-badge.unknown { background: var(--bs-gray-light); color: var(--bs-gray); }
.bs-compat-badge.incompatible { background: rgba(212,0,30,0.08); color: var(--bs-red); }

/* ─── Quick Chips ─────────────────────────────────────────────────────────── */
.bs-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 4px 0;
}

.bs-chip {
  padding: 7px 13px;
  border-radius: 20px;
  border: 1.5px solid var(--bs-border);
  background: white;
  font-size: 13px;
  font-weight: 500;
  color: var(--bs-text);
  cursor: pointer;
  transition: border-color var(--bs-transition), background var(--bs-transition), color var(--bs-transition);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  display: flex;
  align-items: center;
  gap: 5px;
}

.bs-chip:hover {
  border-color: var(--bs-red);
  color: var(--bs-red);
  background: rgba(212, 0, 30, 0.04);
}

.bs-chip:active { transform: scale(0.97); }

/* ─── Input Composer ─────────────────────────────────────────────────────── */
.bs-composer {
  padding: 12px 12px;
  border-top: 1px solid var(--bs-border);
  background: white;
  flex-shrink: 0;
  position: relative;
}

/* Safe area for mobile home bar */
@media (max-width: 639px) {
  .bs-composer {
    padding-bottom: max(12px, env(safe-area-inset-bottom, 12px));
  }
}

.bs-composer-inner {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  background: var(--bs-gray-light);
  border: 1.5px solid var(--bs-border);
  border-radius: 24px;
  padding: 8px 8px 8px 14px;
  transition: border-color var(--bs-transition);
}

.bs-composer-inner:focus-within {
  border-color: var(--bs-red);
}

.bs-composer-textarea {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 14px;
  line-height: 1.4;
  color: var(--bs-text);
  resize: none;
  outline: none;
  max-height: 120px;
  font-family: inherit;
  padding: 0;
}

.bs-composer-textarea::placeholder { color: var(--bs-text-light); }

.bs-composer-send {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bs-red);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--bs-transition), transform var(--bs-transition);
  -webkit-tap-highlight-color: transparent;
}

.bs-composer-send:hover { background: var(--bs-red-dark); }
.bs-composer-send:active { transform: scale(0.95); }
.bs-composer-send:disabled {
  background: var(--bs-border);
  cursor: not-allowed;
}

.bs-composer-send svg { width: 16px; height: 16px; fill: white; }

/* ─── Typing Indicator ───────────────────────────────────────────────────── */
.bs-typing {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 10px 14px;
  background: var(--bs-gray-light);
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  width: fit-content;
}

.bs-typing-dot {
  width: 6px;
  height: 6px;
  background: var(--bs-gray);
  border-radius: 50%;
  animation: bs-bounce 1.2s infinite;
}

.bs-typing-dot:nth-child(2) { animation-delay: 0.2s; }
.bs-typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes bs-bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.5; }
  40% { transform: translateY(-6px); opacity: 1; }
}

/* ─── Cart Success Toast ─────────────────────────────────────────────────── */
.bs-cart-toast {
  background: white;
  border: 1.5px solid var(--bs-success);
  border-radius: var(--bs-radius);
  padding: 12px 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.bs-cart-toast-icon {
  width: 28px;
  height: 28px;
  background: var(--bs-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.bs-cart-toast-icon svg { width: 14px; height: 14px; fill: white; }

.bs-cart-toast-info {
  flex: 1;
}

.bs-cart-toast-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--bs-text);
  margin-bottom: 4px;
}

.bs-cart-toast-meta {
  font-size: 12px;
  color: var(--bs-text-light);
}

.bs-btn-cart-view {
  padding: 6px 12px;
  background: var(--bs-dark);
  color: white;
  border: none;
  border-radius: var(--bs-radius-sm);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}

/* ─── Markdown-style text rendering ─────────────────────────────────────── */
.bs-md h1, .bs-md h2, .bs-md h3 {
  font-weight: 700;
  margin-bottom: 4px;
  line-height: 1.3;
}
.bs-md p { margin-bottom: 6px; }
.bs-md p:last-child { margin-bottom: 0; }
.bs-md ul, .bs-md ol {
  padding-left: 16px;
  margin: 4px 0;
}
.bs-md li { margin-bottom: 3px; }
.bs-md strong { font-weight: 600; }
.bs-md a { color: var(--bs-red); text-decoration: none; }
.bs-md a:hover { text-decoration: underline; }

/* ─── Scrollbar polish for desktop ──────────────────────────────────────── */
@media (min-width: 640px) {
  .bs-messages::-webkit-scrollbar { width: 4px; }
  .bs-messages::-webkit-scrollbar-track { background: transparent; }
  .bs-messages::-webkit-scrollbar-thumb { background: var(--bs-border); border-radius: 2px; }
}