:root {
  --ai-text: #172033;
  --ai-muted: #667085;
  --ai-border: #dce3ec;
  --ai-surface: #ffffff;
  --ai-soft: #f6f8fb;
  --ai-code: #0d1117;
  --ai-code-text: #e6edf3;
  --ai-accent: #1463f3;
}

.message-row.assistant .message.chat-message {
  width: min(900px, calc(100% - 45px));
  max-width: 900px;
}

.ai-markdown-body {
  width: 100%;
  min-width: 0;
  color: var(--ai-text);
  font-size: 15px;
  line-height: 1.78;
  overflow-wrap: break-word;
}

.ai-markdown-body > :first-child { margin-top: 0; }
.ai-markdown-body > :last-child { margin-bottom: 0; }
.ai-markdown-body p { margin: 0 0 1em; white-space: normal; }
.ai-markdown-body h1,
.ai-markdown-body h2,
.ai-markdown-body h3,
.ai-markdown-body h4 { margin: 1.4em 0 .65em; color: #101828; line-height: 1.35; }
.ai-markdown-body h1 { font-size: 1.55em; }
.ai-markdown-body h2 { font-size: 1.35em; }
.ai-markdown-body h3 { font-size: 1.16em; }
.ai-markdown-body ul,
.ai-markdown-body ol { margin: .7em 0 1em; padding-left: 1.7em; }
.ai-markdown-body li { margin: .32em 0; }
.ai-markdown-body blockquote { margin: 1em 0; border-left: 4px solid #aab7c7; border-radius: 0 8px 8px 0; padding: 10px 14px; color: #475467; background: var(--ai-soft); }
.ai-markdown-body blockquote p { margin: 0; }
.ai-markdown-body table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 14px; }
.ai-markdown-body th,
.ai-markdown-body td { border: 1px solid var(--ai-border); padding: 9px 11px; text-align: left; vertical-align: top; }
.ai-markdown-body th { background: var(--ai-soft); }
.ai-markdown-body a { color: #075ee8; text-decoration: underline; text-underline-offset: 3px; }
.ai-markdown-body :not(pre) > code { border: 1px solid var(--ai-border); border-radius: 6px; padding: 1px 5px; color: #9b2c2c; background: var(--ai-soft); font-family: Consolas, "Cascadia Code", monospace; font-size: .9em; }

.ai-code-block {
  width: 100%;
  min-width: 0;
  margin: 1em 0;
  overflow: hidden;
  border: 1px solid #202938;
  border-radius: 12px;
  background: var(--ai-code);
  box-shadow: 0 10px 26px rgb(15 23 42 / 12%);
}

.ai-code-block figcaption {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px 7px 14px;
  color: #c9d1d9;
  background: #161b22;
  font-size: 12px;
  font-weight: 700;
}

.ai-code-block .copy-code {
  border: 1px solid #3b4658;
  border-radius: 7px;
  padding: 5px 10px;
  color: #dbe5f0;
  background: #202733;
  cursor: pointer;
}

.ai-code-block .copy-code:hover { background: #2b3545; }
.ai-code-block pre { width: 100%; max-height: 620px; margin: 0; overflow: auto; padding: 16px; color: var(--ai-code-text); background: var(--ai-code); box-sizing: border-box; tab-size: 4; }
.ai-code-block code { display: block; min-width: max-content; padding: 0; border: 0; color: inherit; background: transparent; font-family: Consolas, "SFMono-Regular", "Cascadia Code", Menlo, monospace; font-size: 13px; line-height: 1.7; white-space: pre; }
.ai-code-block .tok-keyword { color: #ff7b72; }
.ai-code-block .tok-string { color: #a5d6ff; }
.ai-code-block .tok-number { color: #79c0ff; }
.ai-code-block .tok-comment { color: #8b949e; font-style: italic; }

.ask-selection-button {
  position: fixed;
  z-index: 10000;
  border: 1px solid #c9d7ed;
  border-radius: 999px;
  padding: 8px 13px;
  color: #fff;
  background: #1463f3;
  box-shadow: 0 8px 24px rgb(20 99 243 / 28%);
  cursor: pointer;
  font-size: 12px;
  font-weight: 800;
}

.chat-quote-panel { display: grid; gap: 7px; margin: 0 0 8px; }
.chat-quote-panel[hidden] { display: none; }
.chat-quote-panel article { position: relative; border-left: 3px solid #94a3b8; border-radius: 7px; padding: 8px 34px 8px 11px; color: #475467; background: #f2f4f7; }
.chat-quote-panel article span { display: block; margin-bottom: 3px; color: #667085; font-size: 11px; font-weight: 800; }
.chat-quote-panel article p { max-height: 3.2em; margin: 0; overflow: hidden; font-size: 12px; line-height: 1.55; white-space: pre-wrap; }
.chat-quote-panel article button { position: absolute; top: 7px; right: 8px; width: 24px; height: 24px; border: 0; border-radius: 50%; color: #667085; background: transparent; cursor: pointer; font-size: 18px; }
.chat-quote-panel article button:hover { color: #b42318; background: #fee4e2; }

.ai-media-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.ai-media-card,
.ai-file-card { overflow: hidden; border: 1px solid var(--ai-border); border-radius: 12px; background: var(--ai-surface); }
.ai-media-card img,
.ai-media-card video { display: block; width: 100%; max-height: 520px; object-fit: contain; background: #0f172a; }
.ai-media-card figcaption,
.ai-file-card { display: flex; align-items: center; gap: 10px; padding: 10px 12px; }
.ai-media-card figcaption a,
.ai-file-card a { margin-left: auto; color: var(--ai-accent); }

@media (prefers-color-scheme: dark) {
  :root { --ai-text: #e5e7eb; --ai-muted: #9ca3af; --ai-border: #374151; --ai-surface: #111827; --ai-soft: #1f2937; }
  body.theme-auto .message.chat-message.assistant .message-text { border-color: #334155; color: var(--ai-text); background: #111827; }
  body.theme-auto .ai-markdown-body h1,
  body.theme-auto .ai-markdown-body h2,
  body.theme-auto .ai-markdown-body h3,
  body.theme-auto .ai-markdown-body h4 { color: #f3f4f6; }
}

@media (max-width: 720px) {
  .ai-markdown-body { font-size: 14px; }
  .ai-code-block { max-width: calc(100vw - 70px); }
}