/* === Messages Container === */
.messages-container {
  display: flex;
  flex-direction: column;
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 20px 20px var(--input-inset, 140px);
  gap: 0;
  min-width: 0;
  background-color: var(--app-primary-background);
  position: relative;
}

/* === Scroll to Bottom Button === */
.scroll-to-bottom-btn {
  position: sticky;
  bottom: 8px;
  align-self: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--app-input-border);
  background: var(--app-primary-background);
  color: var(--app-secondary-foreground);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  z-index: 10;
  margin-top: -40px;
  animation: fadeIn 0.15s ease-out;
  transition: background 0.15s, color 0.15s;
}

.scroll-to-bottom-btn:hover {
  background: var(--app-ghost-button-hover-background);
  color: var(--app-primary-foreground);
}

.message-gradient {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(var(--input-inset, 140px) + 30px);
  background: linear-gradient(to bottom, transparent 0%, var(--app-primary-background) 100%);
  pointer-events: none;
  z-index: 2;
}

/* === Timeline Message === */
.timeline-message {
  position: relative;
  padding-left: 30px;
  padding-top: 8px;
  padding-bottom: 8px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  color: var(--app-primary-foreground);
}

.timeline-message:first-child { padding-top: 0; }

.timeline-message::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 14px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--app-secondary-foreground);
  z-index: 1;
}

.timeline-message:first-child::before { top: 6px; }

.timeline-message::after {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--app-primary-border-color, var(--app-input-border));
}

.timeline-message:first-child::after { top: 13px; }
.user-message-wrapper + .timeline-message::after { top: 21px; }
.timeline-message:has(+ .user-message-wrapper)::after,
.timeline-message.is-last::after,
.timeline-message:last-child::after {
  left: 9px;
  width: 7px;
  background:
    radial-gradient(circle at center calc(100% - 3.5px), var(--app-timeline-end-dot) 0 3px, transparent 3.5px),
    linear-gradient(var(--app-primary-border-color, var(--app-input-border)), var(--app-primary-border-color, var(--app-input-border))) center top / 1px calc(100% - 7px) no-repeat;
}

.timeline-message.is-last.dot-blink::after {
  left: 12px;
  width: 1px;
  background: var(--app-primary-border-color, var(--app-input-border));
}

/* Dot Colors */
.timeline-message.dot-brand::before { background: var(--app-brand); }
.timeline-message.dot-success::before { background: #74c991; }
.timeline-message.dot-error::before { background: #c74e39; }
.timeline-message.dot-warning::before { background: #e1c08d; }
.timeline-message.dot-blink::before { animation: blink 1s linear infinite; }

/* === User Message === */
.user-message-wrapper {
  position: relative;
  z-index: 2;
  padding: 10px 0 12px;
}

.user-message-bubble {
  display: block;
  position: relative;
  white-space: pre-wrap;
  word-break: break-word;
  border: 1px solid var(--vscode-chat-requestBorder, var(--app-input-border));
  border-radius: var(--corner-radius-small);
  background-color: var(--vscode-chat-requestBackground, var(--app-input-background));
  color: var(--app-primary-foreground);
  padding: 9px 10px;
  width: 100%;
  user-select: text;
  font-size: 13px;
  line-height: 1.5;
  font-weight: 400;
}

.user-message-wrapper.is-queued .user-message-bubble {
  border-style: dashed;
  opacity: 0.72;
}

.user-message-status {
  margin-bottom: 6px;
  color: var(--app-secondary-foreground);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.user-message-text {
  white-space: pre-wrap;
}

.user-message-text.is-collapsed {
  max-height: min(260px, 34vh);
  overflow: hidden;
  position: relative;
}

.user-message-text.is-collapsed::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 52px;
  background: linear-gradient(to bottom, transparent, var(--vscode-chat-requestBackground, var(--app-input-background)));
  pointer-events: none;
}

.user-message-toggle {
  margin-top: 8px;
  padding: 2px 8px;
  border: 1px solid var(--app-input-border);
  border-radius: var(--corner-radius-small);
  background: var(--app-primary-background);
  color: var(--app-link-color);
  font: inherit;
  font-size: 12px;
  line-height: 1.5;
  cursor: pointer;
}

.user-message-toggle:hover {
  background: var(--app-ghost-button-hover-background);
}

.user-message-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.user-message-attachment {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: min(320px, 100%);
  height: 24px;
  padding: 0 8px;
  border: 1px solid var(--app-input-border);
  border-radius: var(--corner-radius-small);
  background: var(--app-primary-background);
  color: var(--app-primary-foreground);
  font-size: 12px;
  white-space: nowrap;
}

.user-message-attachment-icon {
  color: var(--app-secondary-foreground);
  font-size: 10px;
  text-transform: uppercase;
  flex-shrink: 0;
}

.user-message-attachment-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* === Assistant Message === */
.assistant-message-content {
  font-size: 13px;
  line-height: 1.6;
  width: 100%;
  min-width: 0;
}

.msg-copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
  padding: 2px 8px;
  border: 1px solid var(--app-input-border);
  border-radius: var(--corner-radius-small);
  background: transparent;
  color: var(--app-secondary-foreground);
  font-size: 11px;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s, background 0.15s, color 0.15s;
}

.timeline-message:hover .msg-copy-btn { opacity: 0.65; }
.msg-copy-btn:hover { opacity: 1 !important; color: var(--app-primary-foreground); background: var(--app-ghost-button-hover-background); }

.error-message-content {
  color: var(--app-error-foreground);
  font-size: 13px;
  line-height: 1.5;
}

.streaming-cursor {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--app-primary-foreground);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

/* === Search Dimmed === */
.messages-container.dimmed > .timeline-message:not(.highlighted) { opacity: 0.4; }
.timeline-message.highlighted { opacity: 1; z-index: 10; }

/* === Markdown Root === */
.markdown-root {
  text-wrap: auto;
  overflow-x: hidden;
  width: 100%;
}

.markdown-root p { white-space: pre-wrap; margin-top: 0.1em; margin-bottom: 0.2em; }
.markdown-root ul, .markdown-root ol { padding-inline-start: 2em; margin-bottom: 0.4em; }
.markdown-root li { margin-bottom: 2px; }
.markdown-root h1, .markdown-root h2, .markdown-root h3, .markdown-root h4 { margin-top: 0.8em; margin-bottom: 0.3em; font-weight: 600; }
.markdown-root > :first-child { margin-top: 0; }
.markdown-root h1 { font-size: 1.3em; }
.markdown-root h2 { font-size: 1.15em; }
.markdown-root h3 { font-size: 1.05em; }
.markdown-root h4 { font-size: 1em; }

.markdown-root blockquote {
  border-left: 3px solid var(--app-primary-border-color);
  padding-left: 12px;
  margin: 0.3em 0;
  color: var(--app-secondary-foreground);
}

.markdown-root a { color: var(--app-link-color); text-decoration: none; }
.markdown-root a:hover { text-decoration: underline; }
.markdown-root hr { border: none; border-top: 1px solid var(--app-primary-border-color); margin: 0.6em 0; }

.markdown-root code {
  font-family: var(--app-monospace-font-family);
  word-break: break-word;
  border-radius: 3px;
  padding: 1px 5px;
  font-size: 0.9em;
  background: color-mix(in srgb, var(--app-secondary-background), transparent 40%);
  color: var(--app-primary-foreground);
}

.markdown-root pre code { padding: 0; }

/* === Code Block === */
.code-block-wrapper { position: relative; margin: 10px 0; }

.code-block-wrapper pre {
  overflow-x: auto;
  white-space: pre;
  border-radius: 6px;
  padding: 14px 16px;
  max-width: 100%;
  margin: 0;
  font-family: var(--app-monospace-font-family);
  font-size: var(--app-monospace-font-size);
  line-height: 1.65;
  background: color-mix(in srgb, var(--app-tool-background), var(--app-primary-background) 30%);
  border: 1px solid var(--app-input-border);
}

/* Subtle selection highlight in code blocks — avoids jarring browser default blue */
.code-block-wrapper pre *::selection,
.code-block-wrapper pre *::-moz-selection {
  background: var(--vscode-editor-selectionBackground, color-mix(in srgb, var(--app-brand), transparent 70%));
}

.code-block-wrapper pre *::selection {
  background: var(--vscode-editor-selectionBackground, color-mix(in srgb, var(--app-brand), transparent 70%));
}

.copy-button {
  position: absolute;
  top: 6px;
  right: 6px;
  opacity: 0.55;
  transition: opacity 0.15s, background 0.15s;
  background: var(--app-secondary-background);
  border: 1px solid var(--app-input-border);
  border-radius: var(--corner-radius-small);
  padding: 4px 6px;
  cursor: pointer;
  color: var(--app-secondary-foreground);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  font-size: 11px;
}

.copy-button:hover { opacity: 1; background: var(--app-ghost-button-hover-background); color: var(--app-primary-foreground); }

/* === Tool Call === */
.tool-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0 0 10px;
}

.tool-body {
  background: transparent;
  margin: 0;
  max-width: 100%;
  font-size: 1em;
}

.tool-header {
  display: flex;
  align-items: center;
  padding: 2px 0;
  gap: 7px;
  cursor: pointer;
  user-select: none;
  min-width: 0;
}

.tool-header:hover .tool-name-secondary { color: var(--app-primary-foreground); }
.tool-header:active { opacity: 0.65; }

.tool-name {
  font-weight: 700;
  color: var(--app-primary-foreground);
  text-transform: capitalize;
  flex-shrink: 0;
}

.tool-name-secondary {
  color: var(--app-secondary-foreground);
  font-size: 0.95em;
  word-break: break-all;
  overflow-wrap: anywhere;
  min-width: 0;
}

.tool-annotation {
  margin-left: auto;
  border-radius: 3px;
  padding: 2px 6px;
  font-size: 11px;
  flex-shrink: 0;
}

.tool-annotation.success { color: #74c991; background-color: #74c99133; }
.tool-annotation.error { color: #c74e39; background-color: #c74e3933; }
.tool-annotation.destructive { color: #c74e39; background-color: #c74e3933; }
.tool-annotation.queued { color: var(--app-secondary-foreground); background-color: color-mix(in srgb, var(--app-secondary-foreground), transparent 85%); }

.tool-chevron {
  font-size: 10px;
  color: var(--app-secondary-foreground);
  flex-shrink: 0;
  transition: transform 0.15s;
}

.tool-chevron.expanded { transform: rotate(180deg); }

.tool-body-grid {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  margin-top: 8px;
  border: 0.5px solid var(--app-input-border);
  border-radius: var(--corner-radius-small);
  background: var(--app-tool-background);
  overflow: hidden;
}

.tool-body-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: subgrid;
  border-top: 0.5px solid var(--app-input-border);
  padding: 0;
}

.tool-body-row:first-child { border-top: none; }

.tool-body-row-label {
  color: var(--app-secondary-foreground);
  opacity: 0.7;
  font-family: var(--app-monospace-font-family);
  font-size: 0.85em;
  padding: 8px 10px;
  user-select: none;
}

.tool-body-row-label-row {
  grid-column: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: color-mix(in srgb, var(--app-tool-background), var(--app-primary-background) 35%);
}

.tool-body-row-copy {
  border: none;
  background: transparent;
  color: var(--app-secondary-foreground);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 10px;
  opacity: 0;
  transition: opacity 0.15s;
}
.tool-body-row:hover .tool-body-row-copy { opacity: 0.6; }
.tool-body-row-copy:hover { opacity: 1; background: var(--app-ghost-button-hover-background); }

.tool-body-row-content {
  padding: 8px 10px;
  font-family: var(--app-monospace-font-family);
  font-size: var(--app-monospace-font-size-small);
  color: var(--app-primary-foreground);
  white-space: pre;
  overflow-x: auto;
  width: 100%;
  min-width: 0;
}

.tool-body-row-content.clipped {
  max-height: 60px;
  overflow: hidden;
  mask-image: linear-gradient(to bottom, var(--app-primary-foreground) 50px, transparent 60px);
  -webkit-mask-image: linear-gradient(to bottom, var(--app-primary-foreground) 50px, transparent 60px);
}

/* === Search Highlight === */
.search-highlight {
  background: color-mix(in srgb, var(--app-brand), transparent 80%);
  border-radius: 2px;
  padding: 0 1px;
}

.search-highlight.active {
  background: color-mix(in srgb, var(--app-brand), transparent 60%);
}