/* Responsive */

@media (max-width: 768px) {
  .shortcuts-footer-btn {
    display: none;
  }

  .chat-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100%;
    z-index: 250;
    width: 260px !important;
    transform: translateX(-100%);
  }

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

  /* Collapsed header actions pill + logogram always visible on mobile */
  .collapsed-header-actions {
    display: flex;
  }

  /* Logogram link always shown on mobile */
  .chat-header-logogram-link {
    display: flex;
  }

  /* Hide pill + logogram while sidebar is open on mobile */
  .chat-sidebar.open ~ .chat-main .collapsed-header-actions,
  .chat-sidebar.open ~ .chat-main .chat-header-logogram-link {
    display: none;
  }

  .shop-product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Hide all tooltips in the chat header on mobile — no hover on touch */
  .chat-header .ui-tooltip {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .sidebar-overlay {
    display: none !important;
  }

  /* Style containment on desktop — prevents CSS counters/quotes from crossing
     the sidebar boundary without creating a new containing block for abs children */
  .chat-sidebar {
    contain: style;
  }
}

@media (max-width: 600px) {
  .chat-messages {
    padding: 0 var(--space-4) var(--space-5);
  }

  .chat-messages > *:first-child:not(.chat-section-welcome) {
    margin-top: var(--space-5);
  }

  .chat-section-welcome:not(:has(.shop-tabs-wrap)) {
    padding-top: var(--space-5);
  }

  .chat-welcome-title {
    font-size: 1.75rem;
  }

  .chat-welcome-ask {
    display: block;
  }

  .chat-starter-btn {
    font-size: 0.875rem;
    padding: var(--space-2) var(--space-3);
  }

  .chat-msg-bubble {
    font-size: 1rem;
    max-width: 90%;
  }

  .chat-msg.assistant .chat-msg-bubble {
    max-width: 100%;
  }

  .section-cards {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: 1.35rem;
  }

  .section-header-inner {
    padding: var(--space-5) var(--space-4) var(--space-5);
  }
}

.chat-msg.assistant .chat-msg-bubble {
  background: none !important;
  color: var(--chat-text) !important;
  border: none !important;
  box-shadow: none;
  padding: var(--space-3) 0;
  max-width: 100%;
}

/* Delete confirmation modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  visibility: hidden;
  pointer-events: none;
}

.modal-overlay.visible {
  visibility: visible;
  pointer-events: auto;
}

.modal {
  background: var(--chat-sidebar-bg);
  border: var(--border-width-1) solid var(--chat-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  max-width: 360px;
  width: calc(100% - 2rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.modal-overlay.visible .modal {
  opacity: 1;
  transform: scale(1);
}

.modal-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--chat-text);
}

.modal-body {
  font-size: 0.875rem;
  color: var(--chat-text-muted);
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
  margin-top: var(--space-2);
}

/* Modal buttons use ui-btn from design-system.css; wire chat tokens to ds tokens */
.modal-actions .ui-btn--primary {
  background: var(--chat-accent);
  color: var(--chat-bg);
  border-color: var(--chat-accent);
}

.modal-actions .ui-btn--primary:hover {
  background: var(--chat-accent-hover);
  border-color: var(--chat-accent-hover);
  opacity: 1;
}

.modal-actions .ui-btn--secondary {
  background: var(--chat-surface-hover);
  color: var(--chat-text);
  border-color: var(--chat-border);
}

.modal-actions .ui-btn--secondary:hover {
  border-color: var(--chat-text-muted);
}

/* Data controls modal */
.data-controls-modal {
  max-width: 400px;
  gap: var(--space-4);
}
.data-controls-items.hidden {
  display: none;
}
.data-controls-items {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: var(--border-width-1) solid var(--chat-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.data-controls-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
}
.data-controls-item + .data-controls-item {
  border-top: var(--border-width-1) solid var(--chat-border);
}
.data-controls-item-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}
.data-controls-item-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--chat-text);
}
.data-controls-item-desc {
  font-size: 0.75rem;
  color: var(--chat-text-muted);
  line-height: 1.5;
}
.data-controls-btn {
  flex-shrink: 0;
  font-size: 0.8125rem;
}
.data-controls-btn--danger {
  color: var(--chat-error-text) !important;
  border-color: var(--chat-error-border) !important;
  background: var(--chat-error-bg) !important;
}
.data-controls-btn--danger:hover {
  border-color: var(--chat-error-text) !important;
}

.data-controls-confirm-delete {
  background: var(--chat-error-text) !important;
  border-color: var(--chat-error-text) !important;
  color: var(--chat-user-text) !important;
}
.data-controls-confirm-delete:hover {
  opacity: 0.85;
}
.data-controls-empty {
  display: none;
  padding: var(--space-3) var(--space-4);
  border: var(--border-width-1) solid var(--chat-border);
  border-radius: var(--radius-md);
}
.data-controls-empty.visible {
  display: block;
}
.data-controls-empty-text {
  font-size: 0.875rem;
  color: var(--chat-text-muted);
}

/* Header SVG icon colors: white in dark mode, muted in light mode */
.header-newchat-btn,
.header-share-btn,
.theme-toggle-btn,
.sidebar-collapse-btn,
.chat-header-toggle {
  color: var(--chat-text);
}

html[data-theme="light"] .header-newchat-btn,
html[data-theme="light"] .header-share-btn,
html[data-theme="light"] .theme-toggle-btn,
html[data-theme="light"] .sidebar-collapse-btn,
html[data-theme="light"] .chat-header-toggle {
  color: var(--chat-text-muted);
}

/* Wave emoji animation */
@keyframes wave {
  0% {
    transform: rotate(0deg);
  }
  15% {
    transform: rotate(20deg);
  }
  30% {
    transform: rotate(-8deg);
  }
  45% {
    transform: rotate(18deg);
  }
  60% {
    transform: rotate(-6deg);
  }
  75% {
    transform: rotate(14deg);
  }
  100% {
    transform: rotate(0deg);
  }
}

.wave-emoji {
  display: inline-block;
  transform-origin: 70% 70%;
  vertical-align: middle;
  position: relative;
  cursor: pointer;
  user-select: none;
  will-change: transform;
}

/* Typewriter cursor */
@keyframes cursor-blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}

.chat-typing-cursor {
  display: inline-block;
  width: 2px;
  height: 0.9em;
  background: currentColor;
  margin-left: 2px;
  vertical-align: text-bottom;
  border-radius: 1px;
  will-change: opacity;
  animation: cursor-blink 0.6s step-end infinite;
}

/* Tooltip */

.ui-tooltip-wrap {
  position: relative;
  display: inline-flex;
}

.ui-tooltip {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background: var(--tooltip-bg);
  color: var(--tooltip-text);
  border: none;
  font-size: 0.75rem;
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition:
    opacity 0.15s,
    transform 0.15s;
  z-index: 10;
}

.ui-tooltip-wrap:hover .ui-tooltip,
.ui-tooltip-wrap:focus-within .ui-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  transition-delay: 0s;
}

.ui-tooltip--bottom {
  bottom: auto;
  top: calc(100% + 6px);
  transform: translateX(-50%) translateY(-4px);
}

.ui-tooltip-wrap:hover .ui-tooltip--bottom,
.ui-tooltip-wrap:focus-within .ui-tooltip--bottom {
  transform: translateX(-50%) translateY(0);
  transition-delay: 0s;
}

.ui-tooltip--right {
  left: auto;
  right: 0;
  transform: translateX(0) translateY(-4px);
}

.ui-tooltip--bottom.ui-tooltip--right {
  transform: translateX(0) translateY(-4px);
}

.ui-tooltip-wrap:hover .ui-tooltip--right,
.ui-tooltip-wrap:focus-within .ui-tooltip--right {
  transform: translateX(0) translateY(0);
}

.ui-tooltip-wrap:hover .ui-tooltip--bottom.ui-tooltip--right,
.ui-tooltip-wrap:focus-within .ui-tooltip--bottom.ui-tooltip--right {
  transform: translateX(0) translateY(0);
}

/* Context picker */
.chat-input-plus-wrap {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-input-plus-tooltip {
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.chat-tooltip-kbd-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 0.25rem;
  padding: 0;
}

html[data-theme="light"] .chat-tooltip-kbd-wrap {
  background: rgba(255, 255, 255, 0.2);
}

.chat-tooltip-kbd {
  font-size: 0.75rem;
  font-family: inherit;
  font-weight: 600;
  line-height: 1;
  background: none;
  border: none;
  padding: 0;
}

/* Keep tooltip hidden while picker is open or suppressed after click */
.chat-input-plus-wrap.tooltip-suppressed .ui-tooltip,
.chat-input-plus-btn[aria-expanded="true"] ~ .ui-tooltip {
  opacity: 0 !important;
  pointer-events: none !important;
  transition: none !important;
}

.chat-input-plus-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--chat-text-muted);
  transition:
    background 0.15s,
    color 0.15s;
}
.chat-input-plus-btn:hover {
  background: var(--chat-surface-hover);
  color: var(--chat-text);
}
.chat-input-plus-btn.active {
  color: var(--chat-text-muted);
}

.chat-context-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--chat-surface);
  border: var(--border-width-1) solid var(--chat-border);
  border-radius: var(--radius-full);
  padding: 0 var(--space-2) 0 var(--space-3);
  height: 36px;
  flex-shrink: 0;
  max-width: 180px;
  cursor: default;
  transition: border-color 0.15s;
}
.chat-context-chip:hover {
  border-color: var(--chat-text-muted);
}
.chat-context-chip-icon {
  display: flex;
  align-items: center;
  color: var(--chat-text-muted);
  flex-shrink: 0;
}
.chat-context-chip-icon svg {
  width: 14px;
  height: 14px;
}
.chat-context-chip-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--chat-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: default;
  user-select: none;
}
.chat-context-chip-remove {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--chat-text-muted);
  padding: 0;
  transition:
    background 0.12s,
    color 0.12s;
}
.chat-context-chip-remove:hover {
  background: var(--chat-surface-hover);
  color: var(--chat-text);
}

/* Context picker floating menu — matches session-menu style */
.context-picker-menu {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  background: var(--chat-input-bg);
  border: var(--border-width-1) solid var(--chat-border);
  border-radius: var(--radius-lg);
  padding: var(--space-1);
  min-width: 180px;
  box-shadow: var(--shadow-md);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  opacity: 0;
  pointer-events: none;
}
.context-picker-menu:not(.open) {
  opacity: 0 !important;
  pointer-events: none !important;
}
.context-picker-menu.open {
  pointer-events: auto;
}
.context-picker-title {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--chat-text-muted);
  padding: var(--space-2) 0.65rem var(--space-1);
  letter-spacing: 0.04em;
  user-select: none;
}
.context-picker-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: 0.45rem 0.65rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--chat-text);
  font-size: 0.875rem;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  transition:
    background 0.12s,
    color 0.12s;
}
.context-picker-item:hover,
.context-picker-item.focused {
  background: var(--chat-surface-hover);
}
.context-picker-item.selected {
  color: var(--chat-accent);
}
.context-picker-item.selected:hover {
  background: var(--chat-surface-hover);
}
.context-picker-item svg {
  flex-shrink: 0;
  color: var(--chat-text-muted);
  width: 14px;
  height: 14px;
}
.context-picker-item.selected svg {
  color: var(--chat-accent);
}

.context-picker-item.hidden {
  display: none;
}

/* Dark mode menu fixes — surface-hover == input-bg in dark so hover is invisible; use surface instead */
html[data-theme="dark"] .session-menu-item:hover {
  background: #383838;
}
html[data-theme="dark"] .session-menu-item.danger:hover {
  background: var(--chat-error-bg);
}

html[data-theme="dark"] .context-picker-item:hover,
html[data-theme="dark"] .context-picker-item.selected:hover,
html[data-theme="dark"] .context-picker-item.focused {
  background: #383838;
}

html[data-theme="dark"] .context-picker-item svg {
  color: var(--chat-text-dim);
}

html[data-theme="dark"] .sidebar-nav-item:hover,
html[data-theme="dark"] .sidebar-nav-item.active:hover {
  background: var(--chat-surface);
}

html[data-theme="dark"] .chat-input-plus-btn:hover {
  background: var(--chat-surface);
}

html[data-theme="dark"] .chat-input-plus-btn.active {
  color: var(--chat-text);
}

/* ── Mobile performance: remove GPU-expensive effects on small screens ───── */
@media (max-width: 768px) {
  /* Drop backdrop-filter blur on all overlays — biggest GPU drain on mobile */
  .sidebar-overlay,
  .connect-backdrop,
  .modal-overlay,
  .shortcuts-modal-backdrop,
  .chat-scroll-btn {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  /* Darken all overlays to compensate for no blur */
  .sidebar-overlay,
  .connect-backdrop,
  .modal-overlay,
  .shortcuts-modal-backdrop {
    background: rgba(0, 0, 0, 0.8);
  }

  /* Kill shimmer on mobile — continuous background-position animation */
  .spc-shimmer {
    animation: none;
  }

}

/* ── Touch devices: disable hover states so they don't stick after tap ───── */
@media (hover: none) {
  .header-newchat-btn:hover,
  .session-item:hover .session-more-btn,
  .session-more-btn:hover,
  #footerMoreBtn:hover,
  .session-item:hover,
  .session-menu-item:hover .session-menu-icon,
  .session-menu-item:hover .session-menu-pin-icon,
  .session-menu-item:hover,
  .session-menu-item.danger:hover,
  .sidebar-collapse-btn:hover,
  .sidebar-new-chat-btn:hover,
  .sidebar-link:hover,
  .sidebar-nav-item:hover,
  .sidebar-nav-item.active:hover,
  .shortcuts-footer-btn:hover,
  .shortcuts-modal-close:hover,
  .bug-report-cancel:hover,
  .bug-report-submit:hover,
  .section-subtitle-link:hover,
  .shop-tabs-wrap .ui-tab-trigger:hover,
  .shop-product-card:hover,
  .section-card:hover,
  .chat-page-back-btn:hover,
  .chat-header-toggle:hover,
  .connect-link:hover,
  html[data-theme="light"] .connect-link:hover,
  .header-share-btn:hover,
  .theme-toggle-btn:hover,
  .chat-starter-btn:hover,
  .chat-msg-link-chip:hover,
  .chat-msg-action-btn:hover,
  .chat-msg.assistant .chat-msg-bubble .chat-inline-link:hover,
  .chat-stop-btn:hover,
  .chat-send-btn:hover,
  .modal-actions .ui-btn--primary:hover,
  .modal-actions .ui-btn--secondary:hover,
  .data-controls-btn--danger:hover,
  .data-controls-confirm-delete:hover,
  .chat-input-plus-btn:hover,
  .chat-context-chip:hover,
  .chat-context-chip-remove:hover,
  .context-picker-item:hover,
  .context-picker-item.selected:hover,
  html[data-theme="dark"] .session-menu-item:hover,
  html[data-theme="dark"] .session-menu-item.danger:hover,
  html[data-theme="dark"] .context-picker-item:hover,
  html[data-theme="dark"] .context-picker-item.selected:hover,
  html[data-theme="dark"] .sidebar-nav-item:hover,
  html[data-theme="dark"] .sidebar-nav-item.active:hover,
  html[data-theme="dark"] .chat-input-plus-btn:hover {
    background: unset;
    background-color: unset;
    color: unset;
    border-color: unset;
    box-shadow: unset;
    opacity: unset;
    filter: unset;
    transform: unset;
  }

  /* Preserve transform on scroll btn — it uses translateX(-50%) for centering */
  .chat-scroll-btn,
  .chat-scroll-btn:hover {
    background: var(--color-white);
    color: unset;
  }

  html[data-theme="dark"] .chat-scroll-btn,
  html[data-theme="dark"] .chat-scroll-btn:hover {
    background: #2A2A2A;
  }

  /* Hide tooltips on touch — they trigger on tap and never dismiss */
  .ui-tooltip-wrap:hover .ui-tooltip,
  .ui-tooltip-wrap:hover .ui-tooltip--bottom,
  .ui-tooltip-wrap:hover .ui-tooltip--right,
  .ui-tooltip-wrap:hover .ui-tooltip--bottom.ui-tooltip--right {
    opacity: 0;
    pointer-events: none;
  }
}

/* ── Respect reduced-motion preference ──────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .spc-shimmer,
  .chat-typing span,
  .chat-typing-cursor {
    animation: none;
  }

  .sidebar-overlay,
  .connect-backdrop,
  .modal-overlay,
  .shortcuts-modal-backdrop,
  .chat-scroll-btn {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}