/* 03-chat.css — messages, input, menus */
/* === Messages === */
.messages-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
  min-height: 0;
}
.messages {
  height: 100%;
  overflow-y: scroll;
  overflow-x: hidden;
  padding: var(--space-xl) var(--space-2xl);
  padding-right: 28px;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  -ms-overflow-style: none;
  scrollbar-width: none;
  transition: opacity 80ms ease;
}
.scroll-to-bottom-btn {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  z-index: 20;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-strong);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: none;
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease, opacity 120ms ease;
}
.scroll-to-bottom-btn:hover {
  background: var(--yellow);
  transform: translateX(-50%) translate(1px, 1px);
  box-shadow: none;
}
.scroll-to-bottom-btn:active {
  transform: translateX(-50%) translate(2px, 2px);
  box-shadow: none;
}
.scroll-to-bottom-btn[hidden] {
  display: none !important;
}
.messages.messages-switching {
  opacity: 0;
  pointer-events: none;
}
.messages::-webkit-scrollbar { display: none; }
/* Custom scrollbar */
.custom-scrollbar {
  position: absolute;
  right: 2px;
  top: 0;
  bottom: 0;
  width: 6px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s;
}
.messages-wrap:hover .custom-scrollbar,
.custom-scrollbar.active {
  opacity: 1;
}

.custom-scrollbar-thumb {
  position: absolute;
  right: 0;
  width: 6px;
  min-height: 30px;
  border-radius: var(--radius-nav);
  background: var(--scrollbar-thumb);
  cursor: grab;
  transition: width 0.15s, right 0.15s, background 0.15s;
  pointer-events: all;
}
.custom-scrollbar-thumb:hover,
.custom-scrollbar-thumb.dragging {
  width: 12px;
  right: -3px;
  background: var(--text-muted);
  cursor: grab;
}
.custom-scrollbar-thumb.dragging { cursor: grabbing; }

.welcome-msg {
  text-align: center;
  margin: auto;
  padding: 40px 20px;
  color: var(--text-secondary);
  max-width: 480px;
  width: 100%;
}
.welcome-header {
  margin-bottom: 24px;
}
.welcome-icon {
  font-size: 14px;
  margin-bottom: 8px;
  opacity: 0.5;
}
.welcome-msg h3 {
  font-family: var(--font-mono);
  font-size: 14px;
  text-transform: none;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: var(--btn-letter-spacing);
  margin-bottom: var(--space-sm);
}
.welcome-stats {
  display: flex;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  overflow: hidden;
  margin-bottom: 16px;
}
.welcome-stat {
  flex: 1;
  padding: 10px 8px;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.welcome-stat:last-child { border-right: none; }
.welcome-stat strong {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}
.welcome-stat span {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: 0.04em;
}
.welcome-actions {
  margin-bottom: 24px;
}
.welcome-panels {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}
.welcome-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  padding: 12px 14px;
  background: var(--bg-secondary);
}
.welcome-panel-kicker {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  text-transform: none;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.welcome-list {
  margin: 0;
  padding-left: 16px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-secondary);
}
.welcome-list code {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--bg-tertiary);
  border: 1px solid var(--line);
  padding: 1px 4px;
  border-radius: var(--radius-nav);
}

/* Message Bubbles */
.msg {
  display: flex;
  gap: 10px;
  max-width: 90%;
  min-width: 0;
  animation: fadeIn 0.25s ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.msg.user { align-self: flex-end; flex-direction: row-reverse; }
.msg.assistant { align-self: flex-start; }

.msg-avatar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  flex-shrink: 0;
  width: 58px;
}
.msg.user .msg-avatar-col {
  width: 26px;
}
.msg-avatar {
  width: 26px;
  height: 26px;
  border: 1px solid var(--line);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
}
.msg-avatar svg { display: block; }
.msg.user .msg-avatar { background: var(--bg-bubble-user); color: var(--surface-strong); }
.msg.assistant .msg-avatar { background: var(--blue); color: #fff; }
.msg-avatar-model {
  width: 58px;
  max-width: 58px;
  padding: 2px 3px;
  border-radius: 4px;
  background: var(--bg-tertiary, rgba(0, 0, 0, 0.06));
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.15;
  text-align: center;
  word-break: break-word;
  overflow-wrap: anywhere;
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  line-clamp: 3;
}

.msg-bubble {
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: var(--chat-card-border-radius);
  line-height: 1.5;
  word-break: break-word;
  min-width: 0;
  max-width: 100%;
}
.msg-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}
.msg-attachment-label {
  display: inline-flex;
  align-items: center;
  max-width: 100%;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  background: var(--accent-light);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  line-height: 1.35;
}
.msg.user .msg-bubble {
  background: var(--message-user-background);
  color: var(--message-user-text);
  box-shadow: none;
}
.msg.user.msg-queued {
  opacity: 0.82;
  cursor: pointer;
}
.msg.user.msg-queued .msg-bubble {
  border: 1px dashed rgba(255, 255, 255, 0.45);
  box-shadow: none;
}
.msg.user.msg-queued.is-offline .msg-bubble {
  border-color: rgba(255, 222, 0, 0.85);
}
.msg.user.msg-queued .msg-queue-status {
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.03em;
  opacity: 0.85;
}
.msg.user.msg-queued:hover .msg-queue-status {
  opacity: 1;
  text-decoration: underline;
}
.msg.user .msg-attachment-label {
  background: var(--message-user-attachment-bg);
  color: var(--message-user-attachment-text);
  border-color: var(--message-user-attachment-border);
}
.msg.assistant .msg-bubble {
  background: var(--message-assistant-background);
  color: var(--message-assistant-text);
  box-shadow: none;
}
.msg-bubble > .msg-segment {
  margin: 0;
}
.msg-bubble > .msg-segment + .msg-segment {
  margin-top: 6px;
}
.msg-segment-text {
  min-width: 0;
  font-size: var(--text-caption);
  line-height: 1.6;
  color: var(--text-primary);
  opacity: 1;
}
.msg-segment-text.msg-segment-process {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-secondary);
  opacity: 0.88;
}
.msg-segment-text.msg-segment-thinking {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-muted);
  opacity: 0.9;
  font-style: italic;
  border-left: 1px solid rgba(56, 56, 56, 0.18);
  padding-left: 10px;
}
.msg-segment-text.msg-segment-final {
  font-size: var(--text-caption);
  line-height: 1.6;
  color: var(--text-primary);
  opacity: 1;
}
.msg-segment-pending {
  min-height: 24px;
}

/* Collapsed thinking / process group (Claude Code / Codex style) */
.msg-process-group {
  margin: 2px 0 8px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-nav);
  background: var(--bg-secondary);
  overflow: hidden;
}
.msg-process-group-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  cursor: pointer;
  list-style: none;
  user-select: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  transition: background 120ms ease;
}
.msg-process-group-summary::-webkit-details-marker { display: none; }
.msg-process-group-summary::marker { content: ''; }
.msg-process-group-icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-secondary);
  opacity: 1;
  flex-shrink: 0;
}
.msg-process-group[open] .msg-process-group-icon {
  background: var(--text-primary);
  opacity: 1;
}
.msg-process-group-title {
  flex: 1;
  min-width: 0;
}
.msg-process-group-hint {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  opacity: 1;
}
.msg-process-group-summary:hover {
  background: var(--color-hover-veil);
}
.msg-process-group-body {
  padding: 4px 10px 10px;
  border-top: 1px dashed var(--color-hairline);
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.msg-process-group-body .tool-call,
.msg-process-group-body .tool-group {
  margin: 0;
}
.msg-process-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 6px;
  padding: 4px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
}
.msg-process-live-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue-strong);
  box-shadow: none;
  animation: process-live-pulse 1.2s ease-out infinite;
}
@keyframes process-live-pulse {
  0% { box-shadow: none; }
  70% { box-shadow: none; }
  100% { box-shadow: none; }
}

/* System messages */
.msg.system {
  align-self: center;
  max-width: 90%;
}
.msg.system .msg-bubble {
  background: var(--message-system-background);
  border: 1px dashed var(--message-system-border);
  border-radius: var(--chat-card-border-radius);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 10px 16px;
  text-align: center;
  white-space: pre-line;
  box-shadow: none;
}

/* Error messages */
.msg.system.error-msg {
  animation: errorShake 0.4s ease;
}
.msg.system.error-msg .msg-bubble {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: left;
}
.error-dismiss-btn {
  background: none;
  border: none;
  color: inherit;
  font-size: 13px;
  cursor: pointer;
  padding: 0 4px;
  opacity: 0.6;
  transition: opacity 120ms;
  flex-shrink: 0;
  margin-left: auto;
}
.error-dismiss-btn:hover {
  opacity: 1;
}
@keyframes errorShake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-4px); }
  40%, 80% { transform: translateX(4px); }
}

/* Markdown content */
.msg-bubble p { margin: 0 0 5px 0; }
.msg-bubble p:last-child { margin-bottom: 0; }
.msg-bubble ul, .msg-bubble ol { margin: 3px 0 5px 15px; }
.msg-bubble li { margin-bottom: 2px; }
.msg-bubble h1, .msg-bubble h2, .msg-bubble h3, .msg-bubble h4 {
  margin: 10px 0 5px 0;
  font-family: var(--font-mono);
  text-transform: none;
  letter-spacing: 0.02em;
}
.msg-bubble h1 { font-size: 1.3em; }
.msg-bubble h2 { font-size: 1.15em; }
.msg-bubble h3 { font-size: 1.05em; }
.msg-bubble a { color: var(--blue-strong); text-decoration: none; text-underline-offset: 0.22em; }
.msg-bubble a:hover { text-decoration: underline; border-bottom: 1px solid var(--blue); }
.msg-bubble blockquote {
  border-left: 3px solid var(--line);
  padding-left: 12px;
  color: var(--text-secondary);
  margin: 8px 0;
}
/* Wide tables: own horizontal pan surface so mobile swipe does not open the sidebar (issue #4). */
.msg-bubble table {
  border-collapse: collapse;
  margin: 8px 0;
  font-size: 12px;
  width: 100%;
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x pan-y;
  overscroll-behavior-x: contain;
}
.msg-bubble th, .msg-bubble td {
  border: 1px solid var(--line);
  padding: 6px 10px;
  text-align: left;
  white-space: nowrap;
  /* Prefer cell/table pan over parent gesture recognition */
  touch-action: pan-x pan-y;
}
.msg-bubble th { background: var(--bg-secondary); font-family: var(--font-mono); font-size: 11px; text-transform: none; }

/* Inline code */
.msg-bubble code:not(pre code) {
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  font-size: 0.88em;
  font-family: var(--font-mono);
  color: var(--text-primary);
}
.msg.user .msg-bubble code:not(pre code) {
  background: var(--message-user-inline-code-bg);
  border-color: var(--message-user-inline-code-border);
  color: var(--message-user-inline-code-text);
}

/* Code blocks */
.code-block-wrapper {
  position: relative;
  margin: 8px 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  overflow: hidden;
  max-width: 100%;
}
.code-block-header { padding: 4px 10px;
  background: var(--code-header-bg);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--code-header-text);
  border-bottom: 1px solid var(--line);
}
.code-block-actions {
  display: flex;
  gap: 4px;
  align-items: center;
}
.code-copy-btn, .code-preview-btn {
  background: none;
  border: 1px solid var(--code-action-border);
  color: var(--code-header-text);
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 8px;
  border-radius: var(--radius-nav);
}
.code-copy-btn:hover, .code-preview-btn:hover { color: var(--code-action-hover-text); background: var(--code-action-hover-bg); }
.code-block-wrapper pre {
  margin: 0;
  padding: 12px;
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x pan-y;
  overscroll-behavior-x: contain;
}
.code-block-wrapper pre code {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  white-space: pre;
  word-break: normal;
  display: block;
  min-width: max-content;
}
/* HTML/SVG preview pane */
.code-preview-pane {
  display: none;
  background: var(--surface-elevated);
  border-top: 1px solid var(--line);
}
.code-preview-iframe {
  width: 100%;
  min-height: 120px;
  max-height: 600px;
  border: none;
  display: block;
}
.code-render-pane {
  background: var(--panel-inverse-background);
}
.json-render-pre {
  margin: 0;
  padding: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  white-space: pre;
  overflow-x: auto;
  color: var(--panel-inverse-text);
  max-height: 600px;
  overflow-y: auto;
}
.code-block-wrapper.preview-mode .code-preview-pane { display: block; }
.code-block-wrapper.preview-mode pre { display: none; }

/* Tool calls */
.tool-call {
  margin: 4px 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  overflow: hidden;
  font-size: 10px;
  opacity: 0.6;
}
.tool-call.codex-command {
  border-color: var(--line);
}
.tool-call.codex-reasoning {
  border-color: var(--text-muted);
  border-style: dashed;
  opacity: 0.88;
}
.tool-call.codex-reasoning summary {
  opacity: 0.72;
}
.tool-call.codex-reasoning .tool-call-label {
  font-weight: 400;
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: 0;
}
.tool-call.codex-file-change {
  border-color: var(--line);
}
.tool-call summary {
  padding: 8px 12px;
  cursor: pointer;
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  display: flex;
  align-items: flex-start;
  gap: 8px;
  user-select: none;
  list-style: none;
}
.tool-call-summary-main {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}
.tool-call-label {
  display: block;
  width: 100%;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  text-transform: none;
  color: var(--text-primary);
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.tool-call-subtitle {
  display: block;
  width: 100%;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-mid-ash);
  font-size: 12px;
}
.tool-call-state {
  flex-shrink: 0;
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-badges);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: none;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}
.tool-call-state.running {
  background: var(--yellow);
  color: var(--text-primary);
}
.tool-call-state.done {
  background: var(--tool-card-running-bg);
  color: var(--success);
}
.tool-call-state.error {
  background: var(--tool-card-error-bg);
  color: var(--danger);
}
.tool-call summary::-webkit-details-marker { display: none; }
.tool-call summary::before {
  content: '\25B8';
  font-size: 10px;
  transition: transform 0.2s;
}
.tool-call[open] summary::before { transform: rotate(90deg); }
.tool-call summary:hover { background: var(--bg-tertiary); }
.tool-call summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  background: var(--accent-light);
}
.tool-call-icon {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.tool-call-icon.done { background: var(--success); }
.tool-call-icon.running { background: var(--yellow); animation: pulse 1s infinite; }
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}
.tool-call-content {
  padding: 8px 12px;
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-primary);
  border-top: 1px solid var(--line);
  max-height: 250px;
  overflow-y: auto;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-mono);
  -webkit-overflow-scrolling: touch;
}
.tool-call-content.reasoning {
  font-family: var(--font-ui);
  line-height: 1.7;
  color: var(--color-mid-ash);
  background: var(--bg-primary);
  font-style: italic;
  font-size: 12px;
  opacity: 0.9;
}
.tool-call-content.command,
.tool-call-content.file-change {
  background: var(--surface-strong);
}
.tool-call-structured {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tool-call-section {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tool-call-section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: normal;
  text-transform: none;
  color: var(--color-mid-ash);
}
.tool-call-code {
  margin: 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  background: var(--bg-secondary);
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
}
.tool-call-empty {
  color: var(--text-muted);
  font-style: italic;
}

/* Tool group (auto-fold) */
.tool-group {
  margin: 8px 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  overflow: hidden;
}
.tool-group-summary {
  padding: 8px 12px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-mid-ash);
  background: var(--bg-secondary);
  list-style: none;
  user-select: none;
  text-transform: none;
}
.tool-group-summary::-webkit-details-marker { display: none; }
.tool-group-summary::before {
  content: '\25B8 ';
  font-size: 10px;
  transition: transform 0.2s;
  display: inline-block;
}
.tool-group[open] > .tool-group-summary::before { transform: rotate(90deg); }
.tool-group-summary:hover { background: var(--bg-tertiary); }
.tool-group-inner {
  padding: 4px 8px;
  background: var(--bg-primary);
}
.tool-group-inner .tool-call {
  margin: 4px 0;
}

/* AskUserQuestion preview */
.ask-user-question {
  padding: 10px 12px;
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ask-question-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  background: var(--surface-strong);
  padding: 10px;
}
.ask-question-header {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--blue-strong);
  text-transform: none;
  margin-bottom: 6px;
}
.ask-question-text {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.ask-options-layout {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ask-options-layout.has-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 8px;
  align-items: start;
}
.ask-question-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
  grid-row: 1;
  grid-column: 1;
}
.ask-option-preview {
  grid-row: 1;
  grid-column: 2;
  background: var(--bg-secondary);
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.6;
  color: var(--text-secondary);
  min-height: 60px;
  transition: background 0.15s;
  white-space: pre-wrap;
  word-break: break-word;
}
.ask-confirm-btn {
  display: none;
  grid-row: 2;
  grid-column: 1 / -1;
  width: 100%;
  padding: 9px 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  background: transparent;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-transform: none;
  cursor: pointer;
  transition: background 120ms;
}
.ask-confirm-btn:active {
  background: var(--blue);
  color: var(--button-primary-text);
}

.ask-option-item {
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  padding: 8px;
  background: var(--bg-secondary);
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition: background 120ms, transform 120ms, box-shadow 120ms;
}
.ask-option-item:hover {
  background: var(--accent-light);
  }
.ask-option-item.ask-option-selected {
  background: var(--blue);
  border-color: var(--line);
  box-shadow: none;
}
.ask-option-item.ask-option-selected .ask-option-label {
  color: var(--button-primary-text);
}
.ask-option-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-primary);
}
.ask-option-desc {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-top: 4px;
}

/* Typing indicator */
.typing-indicator {
  display: inline-flex;
  gap: 5px;
  padding: 8px 4px;
}
.typing-indicator span {
  width: 7px; height: 7px;
  background: var(--line);
  border-radius: 50%;
  opacity: 0.5;
  animation: bounce 1.4s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-7px); }
}

/* === Slash Command Menu === */
.cmd-menu {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  box-shadow: none;
  padding: 6px;
  min-width: 240px;
  max-width: 320px;
  max-height: 320px;
  overflow-y: auto;
  z-index: 50;
}
.cmd-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-nav);
  cursor: pointer;
  transition: background 120ms;
}
.cmd-item:hover, .cmd-item.active { background: var(--accent-light); }
.cmd-item-cmd {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  color: var(--blue-strong);
  white-space: nowrap;
}
.cmd-item-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

/* === Input Area === */
.input-area {
  padding: var(--space-lg) var(--space-xl);
  padding-bottom: max(var(--space-lg), var(--safe-bottom));
  background: var(--bg-secondary);
  border-top: 1px solid var(--line);
  flex-shrink: 0;
}
.attachment-tray {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-width: min(920px, 100%);
  margin: 0 auto 8px;
}
.attachment-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  padding: 6px 8px;
  border: 1px solid rgba(56, 56, 56, 0.22);
  border-radius: var(--button-radius);
  background: var(--surface-strong);
  color: var(--text-primary);
  font-size: 10px;
  line-height: 1.35;
}
.attachment-chip.uploading {
  border-style: dashed;
  background: var(--surface);
}
.attachment-chip-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.attachment-chip-name {
  font-weight: 700;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.attachment-chip-note {
  color: var(--text-muted);
  font-size: 10px;
  white-space: nowrap;
}
.attachment-chip-remove {
  --compact-btn-border: none;
  --compact-btn-bg: transparent;
  --compact-btn-color: var(--text-muted);
  --compact-btn-hover-bg: var(--danger-soft);
  --compact-btn-hover-color: var(--danger);

  font-size: 12px;
  padding: 2px;
}
.attachment-chip-remove:hover {
  /* keep explicit block for readability with shared compact control base */
}
.attachment-tray-note {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  background: var(--yellow);
  color: var(--text-primary);
  font-size: 10px;
  line-height: 1.45;
}
.input-wrapper {
  display: flex;
  align-items: flex-end;
  gap: var(--space-md);
  background: var(--input-shell-background);
  border: 1px solid var(--input-border);
  border-radius: var(--button-radius);
  padding: var(--space-md) var(--space-lg);
  max-width: min(920px, 100%);
  margin: 0 auto;
  box-shadow: none;
  transition: box-shadow 140ms ease, border-color 140ms ease, background 140ms ease;
}
.input-wrapper.drag-active {
  border-color: var(--blue);
  box-shadow: none;
}
.attach-btn {
  appearance: none;
  width: var(--btn-icon-size);
  height: var(--btn-icon-size);
  background: var(--surface);
  color: var(--text-primary);
  border: 1px solid rgba(56, 56, 56, 0.22);
  border-radius: var(--button-radius);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: none;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}
.attach-btn:hover {
  background: var(--yellow);
  box-shadow: none;
}
.attach-btn:disabled {
  opacity: 0.45;
  cursor: default;
}
.input-wrapper:focus-within {
  box-shadow: none;
}
#msg-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: var(--text-caption);
  font-family: var(--font-ui);
  font-weight: 500;
  line-height: 1.5;
  resize: none;
  outline: none;
  max-height: var(--input-max-height);
  min-height: 22px;
  overflow-y: auto;
  letter-spacing: normal;
}
#msg-input::placeholder { color: var(--text-muted); }
.send-btn, .abort-btn {
  width: var(--btn-icon-size);
  height: var(--btn-icon-size);
  border: none;
  border-radius: var(--radius-nav);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: none;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
  padding: 0;
}

.send-btn:active, .abort-btn:active {
  box-shadow: none;
}

.send-btn {
  background: transparent;
  color: var(--text-primary);
  border: none;
}

.send-btn:hover {
  background: var(--color-hover-veil);
  box-shadow: none;
}
.send-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.abort-btn {
  background: var(--btn-danger-bg);
  color: var(--toast-success-text);
}
.abort-btn:hover {
  background: var(--btn-danger-hover);
  box-shadow: none;
}
.abort-btn:disabled {
  opacity: 0.55;
  cursor: wait;
}
.abort-btn.is-aborting {
  opacity: 0.7;
}

/* === Option Picker === */
.option-picker {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  box-shadow: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  min-width: 260px;
  width: min(360px, calc(100vw - 32px));
  max-width: calc(100vw - 32px);
  max-height: min(70vh, 540px);
  z-index: 50;
  animation: fadeIn 0.2s ease;
}
.option-picker-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-transform: none;
  color: var(--text-primary);
  margin-bottom: 0;
  padding: 0 2px;
}
.option-picker-status {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  color: var(--text-secondary);
  font-size: 11px;
  line-height: 1.45;
}
.option-picker-status.error {
  color: var(--text-error, #b42318);
}
.option-picker-retry {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-nav);
  background: var(--surface);
  color: inherit;
  padding: 3px 8px;
  font: inherit;
  cursor: pointer;
}
.option-picker-retry:hover {
  background: var(--accent-light);
}
.option-picker-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: min(42vh, 320px);
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 2px;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  touch-action: pan-y;
}
.option-picker-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-nav);
  cursor: pointer;
  transition: background 120ms, border-color 120ms;
  margin-bottom: 0;
}
.option-picker-item:last-child { margin-bottom: 0; }
.option-picker-item:hover {
  background: var(--accent-light);
  border-color: var(--line);
}
.option-picker-item.active {
  background: var(--blue);
  border-color: var(--line);
}
.option-picker-item-info { flex: 1; min-width: 0; }
.option-picker-item-label {
  font-weight: 600;
  font-size: 12px;
  line-height: 1.35;
  color: var(--text-primary);
}
.option-picker-item-desc {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.4;
  margin-top: 1px;
}
.option-picker-item-check {
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}
.option-picker-item.active .option-picker-item-label,
.option-picker-item.active .option-picker-item-desc,
.option-picker-item.active .option-picker-item-check {
  color: var(--button-primary-text);
}
.option-picker-list::-webkit-scrollbar {
  width: 8px;
}
.option-picker-list::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 999px;
}
.option-picker-list::-webkit-scrollbar-track {
  background: transparent;
}

/* Mobile topbar bar — hidden on desktop */
.mobile-topbar-bar {
  display: none;
  flex-shrink: 0;
}
.mobile-topbar-select {
  --compact-text-control-size: 11px;

  display: none;
  -webkit-appearance: none;
  appearance: none;
  min-height: 36px;
  padding: 0 28px 0 10px;
  border: var(--mobile-topbar-select-border);
  border-radius: var(--mobile-topbar-select-radius);
  background: var(--mobile-topbar-select-background);
  color: var(--mobile-topbar-select-color);
  box-shadow: none;
  background-image: var(--select-caret-icon);
  background-repeat: no-repeat;
  background-position: right 10px center;
  flex-shrink: 0;
  vertical-align: middle;
}

/* Shown when the vendored marked bundle fails to load: the message still reads as
   plain text instead of the app dying on an undefined global. */
.md-fallback {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  background: none;
  padding: 0;
}