/* =============================================
   CHAT CARD LAYOUT - Flex container with sticky compose
   ============================================= */

/* Main chat card - flex column layout, transparent background */
.chat {
  position: relative;
  display: flex;
  flex-direction: column;
  flex: 1 1 0;
  height: 100%;
  min-height: 0; /* Allow flex shrinking */
  overflow: hidden;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
}

/* Chat header - fixed at top, transparent */
.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: nowrap;
  flex-shrink: 0;
  padding-bottom: 12px;
  margin-bottom: 12px;
  background: transparent;
}

.chat-header__left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  min-width: 0;
}

.chat-header__right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chat-session {
  min-width: 180px;
}

/* Chat thread - scrollable middle section, transparent */
.chat-thread {
  flex: 1 1 0; /* Grow, shrink, and use 0 base for proper scrolling */
  overflow-y: auto;
  overflow-x: hidden;
  padding: 12px;
  margin: 0 -12px;
  min-height: 0; /* Allow shrinking for flex scroll behavior */
  border-radius: 12px;
  background: transparent;
}

/* Focus mode exit button */
.chat-focus-exit {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 100;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 150ms ease-out, color 150ms ease-out, border-color 150ms ease-out;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.chat-focus-exit:hover {
  background: var(--panel-strong);
  color: var(--text);
  border-color: var(--accent);
}

/* Chat compose - sticky at bottom */
.chat-compose {
  position: sticky;
  bottom: 0;
  flex-shrink: 0;
  display: flex;
  align-items: flex-end;
  gap: 12px;
  margin-top: auto; /* Push to bottom of flex container */
  padding: 16px 0 4px;
  background: linear-gradient(to bottom, transparent, var(--bg) 20%);
  z-index: 10;
}

.chat-compose__field {
  flex: 1 1 auto;
  min-width: 0;
}

/* Hide the "Message" label - keep textarea only */
.chat-compose__field > span {
  display: none;
}

/* Override .field textarea min-height (180px) from components.css */
.chat-compose .chat-compose__field textarea {
  width: 100%;
  min-height: 36px;
  max-height: 150px;
  padding: 8px 12px;
  border-radius: 10px;
  resize: vertical;
  white-space: pre-wrap;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.45;
}

.chat-compose__field textarea:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.chat-compose__actions {
  flex-shrink: 0;
  display: flex;
  align-items: stretch;
}

.chat-compose .chat-compose__actions .btn {
  padding: 8px 16px;
  font-size: 13px;
  min-height: 36px;
  white-space: nowrap;
}

/* Chat controls - moved to content-header area, left aligned */
.chat-controls {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.chat-controls__session {
  min-width: 140px;
}

.chat-controls__thinking {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}

/* Icon button style */
.btn--icon {
  padding: 8px !important;
  min-width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.06);
}

/* Controls separator */
.chat-controls__separator {
  color: rgba(255, 255, 255, 0.4);
  font-size: 18px;
  margin: 0 8px;
  font-weight: 300;
}

:root[data-theme="light"] .chat-controls__separator {
  color: rgba(16, 24, 40, 0.3);
}

.btn--icon:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Light theme icon button overrides */
:root[data-theme="light"] .btn--icon {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(16, 24, 40, 0.2);
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.05);
  color: rgba(16, 24, 40, 0.7);
}

:root[data-theme="light"] .btn--icon:hover {
  background: rgba(255, 255, 255, 1);
  border-color: rgba(16, 24, 40, 0.3);
  color: rgba(16, 24, 40, 0.9);
}

.btn--icon svg {
  display: block;
}

.chat-controls__session select {
  padding: 6px 10px;
  font-size: 13px;
}

.chat-controls__thinking {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 6px;
  border: 1px solid var(--border);
}

/* Light theme thinking indicator override */
:root[data-theme="light"] .chat-controls__thinking {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(16, 24, 40, 0.15);
}

@media (max-width: 640px) {
  .chat-session {
    min-width: 140px;
  }

  .chat-compose {
    grid-template-columns: 1fr;
  }

  .chat-controls {
    flex-wrap: wrap;
    gap: 8px;
  }

  .chat-controls__session {
    min-width: 120px;
  }
}

/* =============================================
   LEGACY CHAT LINE LAYOUT (non-grouped)
   ============================================= */

.chat-line {
  display: flex;
  margin-bottom: 12px;
}

.chat-line.user {
  justify-content: flex-end;
}

.chat-line.assistant,
.chat-line.other {
  justify-content: flex-start;
}

.chat-msg {
  display: grid;
  gap: 6px;
  max-width: min(900px, 95%);
}

.chat-line.user .chat-msg {
  justify-items: end;
}

.chat-stamp {
  font-size: 11px;
  color: var(--muted);
}

.chat-line.user .chat-stamp {
  text-align: right;
}

/* =============================================
   CHAT TEXT STYLING
   ============================================= */

.chat-text {
  font-size: 14px;
  line-height: 1.5;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.chat-text :where(p, ul, ol, pre, blockquote, table) {
  margin: 0;
}

.chat-text :where(p + p, p + ul, p + ol, p + pre, p + blockquote) {
  margin-top: 0.75em;
}

.chat-text :where(ul, ol) {
  padding-left: 1.5em;
}

.chat-text :where(li + li) {
  margin-top: 0.25em;
}

.chat-text :where(a) {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.chat-text :where(a:hover) {
  opacity: 0.8;
}

.chat-text :where(code) {
  font-family: var(--mono);
  font-size: 0.9em;
}

.chat-text :where(:not(pre) > code) {
  background: rgba(0, 0, 0, 0.15);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.chat-text :where(pre) {
  background: rgba(0, 0, 0, 0.15);
  border-radius: 6px;
  padding: 10px 12px;
  overflow-x: auto;
}

.chat-text :where(pre code) {
  background: none;
  padding: 0;
}

.chat-text :where(blockquote) {
  border-left: 3px solid var(--border);
  padding-left: 12px;
  color: var(--muted);
}

.chat-text :where(hr) {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1em 0;
}

/* =============================================
   GROUPED CHAT LAYOUT (Slack-style)
   ============================================= */

/* Chat Group Layout - default (assistant/other on left) */
.chat-group {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 16px;
  margin-left: 16px;
  margin-right: 16px;
}

/* User messages on right */
.chat-group.user {
  flex-direction: row-reverse;
  justify-content: flex-start;
}

.chat-group-messages {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-width: min(900px, calc(100% - 60px));
}

/* User messages align content right */
.chat-group.user .chat-group-messages {
  align-items: flex-end;
}

.chat-group.user .chat-group-footer {
  justify-content: flex-end;
}

/* Footer at bottom of message group (role + time) */
.chat-group-footer {
  display: flex;
  gap: 8px;
  align-items: baseline;
  margin-top: 6px;
}

.chat-sender-name {
  font-weight: 500;
  font-size: 12px;
  color: var(--muted);
}

.chat-group-timestamp {
  font-size: 11px;
  color: var(--muted);
  opacity: 0.7;
}

/* Avatar Styles */
.chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--panel-strong);
  display: grid;
  place-items: center;
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
  align-self: flex-end; /* Align with last message in group */
  margin-bottom: 4px; /* Optical alignment */
}

.chat-avatar.user {
  background: rgba(245, 159, 74, 0.2);
  color: rgba(245, 159, 74, 1);
}

.chat-avatar.assistant {
  background: rgba(52, 199, 183, 0.2);
  color: rgba(52, 199, 183, 1);
}

.chat-avatar.other {
  background: rgba(150, 150, 150, 0.2);
  color: rgba(150, 150, 150, 1);
}

/* Minimal Bubble Design - dynamic width based on content */
.chat-bubble {
  display: inline-block;
  border: 1px solid var(--border);
  background: rgba(0, 0, 0, 0.12);
  border-radius: 12px;
  padding: 10px 14px;
  box-shadow: none;
  transition: background 150ms ease-out, border-color 150ms ease-out;
  max-width: 100%;
  word-wrap: break-word;
}

.chat-bubble:hover {
  background: rgba(0, 0, 0, 0.18);
}

/* User bubbles have different styling */
.chat-group.user .chat-bubble {
  background: rgba(245, 159, 74, 0.15);
  border-color: rgba(245, 159, 74, 0.3);
}

.chat-group.user .chat-bubble:hover {
  background: rgba(245, 159, 74, 0.22);
}

/* Streaming animation */
.chat-bubble.streaming {
  animation: pulsing-border 1.5s ease-out infinite;
}

@keyframes pulsing-border {
  0%, 100% {
    border-color: var(--border);
  }
  50% {
    border-color: var(--accent);
  }
}

/* Fade-in animation for new messages */
.chat-bubble.fade-in {
  animation: fade-in 200ms ease-out;
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Tool Card Styles */
.chat-tool-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  margin-top: 8px;
  transition: border-color 150ms ease-out, background 150ms ease-out;
  /* Fixed max-height to ensure cards don't expand too much */
  max-height: 120px;
  overflow: hidden;
}

.chat-tool-card:hover {
  border-color: var(--accent);
  background: rgba(0, 0, 0, 0.06);
}

/* First tool card in a group - no top margin */
.chat-tool-card:first-child {
  margin-top: 0;
}

.chat-tool-card--clickable {
  cursor: pointer;
}

.chat-tool-card--clickable:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Header with title and chevron */
.chat-tool-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.chat-tool-card__title {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 13px;
  line-height: 1.2;
}

.chat-tool-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  font-size: 14px;
  line-height: 1;
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
  vertical-align: middle;
  flex-shrink: 0;
}

/* "View >" action link */
.chat-tool-card__action {
  font-size: 12px;
  color: var(--accent);
  opacity: 0.8;
  transition: opacity 150ms ease-out;
}

.chat-tool-card--clickable:hover .chat-tool-card__action {
  opacity: 1;
}

/* Status indicator for completed/empty results */
.chat-tool-card__status {
  font-size: 14px;
  color: var(--ok);
}

.chat-tool-card__status-text {
  font-size: 11px;
  margin-top: 4px;
}

.chat-tool-card__detail {
  font-size: 12px;
  color: var(--muted);
  margin-top: 4px;
}

/* Collapsed preview - fixed height with truncation */
.chat-tool-card__preview {
  font-size: 11px;
  color: var(--muted);
  margin-top: 8px;
  padding: 8px 10px;
  background: rgba(0, 0, 0, 0.08);
  border-radius: 6px;
  white-space: pre-wrap;
  overflow: hidden;
  max-height: 44px;
  line-height: 1.4;
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.chat-tool-card--clickable:hover .chat-tool-card__preview {
  background: rgba(0, 0, 0, 0.12);
  border-color: rgba(255, 255, 255, 0.08);
}

/* Short inline output */
.chat-tool-card__inline {
  font-size: 11px;
  color: var(--text);
  margin-top: 6px;
  padding: 6px 8px;
  background: rgba(0, 0, 0, 0.06);
  border-radius: 4px;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Reading Indicator */
.chat-reading-indicator {
  background: transparent;
  border: 1px solid var(--border);
  padding: 12px;
  display: inline-flex;
}

.chat-reading-indicator__dots {
  display: flex;
  gap: 6px;
  align-items: center;
}

.chat-reading-indicator__dots span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted);
  animation: reading-pulse 1.4s ease-in-out infinite;
}

.chat-reading-indicator__dots span:nth-child(1) {
  animation-delay: 0s;
}

.chat-reading-indicator__dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.chat-reading-indicator__dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes reading-pulse {
  0%, 60%, 100% {
    opacity: 0.3;
    transform: scale(0.8);
  }
  30% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Split View Layout */
.chat-split-container {
  display: flex;
  gap: 0;
  flex: 1;
  min-height: 0;
  height: 100%;
}

.chat-main {
  min-width: 400px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  /* Smooth transition when sidebar opens/closes */
  transition: flex 250ms ease-out;
}

.chat-sidebar {
  flex: 1;
  min-width: 300px;
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: slide-in 200ms ease-out;
}

@keyframes slide-in {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Sidebar Panel */
.sidebar-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--panel);
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--panel);
}

/* Smaller close button for sidebar */
.sidebar-header .btn {
  padding: 4px 8px;
  font-size: 14px;
  min-width: auto;
  line-height: 1;
}

.sidebar-title {
  font-weight: 600;
  font-size: 14px;
}

.sidebar-content {
  flex: 1;
  overflow: auto;
  padding: 16px;
}

.sidebar-markdown {
  font-size: 14px;
  line-height: 1.5;
}

.sidebar-markdown pre {
  background: rgba(0, 0, 0, 0.12);
  border-radius: 4px;
  padding: 12px;
  overflow-x: auto;
}

.sidebar-markdown code {
  font-family: var(--mono);
  font-size: 13px;
}

/* Mobile: Full-screen modal */
@media (max-width: 768px) {
  .chat-split-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
  }

  .chat-main {
    display: none; /* Hide chat on mobile when sidebar open */
  }

  .chat-sidebar {
    width: 100%;
    min-width: 0;
    border-left: none;
  }
}