/* ==========================================================================
   Preview pane (shared_static/preview.js) — header bar + per-kind content.
   DS tokens only (--ink-*, --panel*, --hair, --accent); no chat.css legacy
   vars.  The pane fills its PaneManager cell; only .preview-content scrolls.
   ========================================================================== */

.preview-root {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  color: var(--ink);
  font-family: var(--font-ui);
}

/* Author display rules must not override the browser's hidden state. */
.preview-root [hidden] {
  display: none;
}

/* ----- header bar ----- */
.preview-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--hair);
  background: var(--panel);
  flex: none;
}

.preview-identity {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  flex: 1 1 240px;
  min-width: 0;
}

.preview-history,
.preview-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: none;
}
.preview-actions {
  flex-wrap: wrap;
  max-width: 100%;
  margin-left: auto;
}

.preview-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 4px 10px;
  font: inherit;
  font-size: 12px;
  line-height: 20px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--ink-2);
  background: var(--panel-2);
  border: 1px solid var(--hair-2);
  border-radius: var(--r-sm);
  cursor: pointer;
}
.preview-action:hover:not(:disabled):not([aria-disabled="true"]) {
  color: var(--ink);
  border-color: var(--ink-4);
}
.preview-action:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.preview-action:disabled,
.preview-action[aria-disabled="true"] {
  opacity: 0.45;
  cursor: default;
}
.preview-nav {
  flex: none;
  width: 30px;
  padding: 0;
  font-size: 14px;
}

.preview-kindchip {
  flex: none;
  padding: 1px 6px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  border: 1px solid var(--hair);
  border-radius: var(--r-sm);
}
.preview-kindchip:empty {
  display: none;
}

.preview-titletext {
  flex: 1 1 40px;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}

/* Web-only options can wrap independently of the header's actions. */
.preview-assets {
  flex: none;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 8px 12px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-3);
  background: var(--panel);
  border-bottom: 1px solid var(--hair);
  cursor: pointer;
}
.preview-assets:hover {
  color: var(--ink);
}
.preview-assets-box {
  flex: none;
  margin: 3px 0 0;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ----- content host ----- */
.preview-content {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  background: var(--panel-2);
}

/* web + pdf fill the cell */
.preview-frame {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  background: #fff; /* pages assume a light canvas until their CSS paints */
}

.preview-imgwrap {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 16px;
}
.preview-img {
  max-width: 100%;
  height: auto;
}

.preview-pre {
  margin: 0;
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  color: var(--ink-2);
  white-space: pre-wrap;
  word-break: break-word;
}

.preview-markdown {
  max-width: 86ch;
  margin: 0 auto;
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.7;
  overflow-wrap: anywhere;
  color: var(--ink);
}
.preview-markdown > * + * {
  margin-top: 12px;
}
.preview-markdown ul,
.preview-markdown ol {
  padding-left: 20px;
}
.preview-markdown a {
  color: var(--accent);
  text-underline-offset: 3px;
}
/* Code-block chrome + katex display + mermaid: the .msg.assistant-scoped rules
   in shared chat.css don't reach the pane (content is .preview-markdown, not a
   .msg.assistant message), so restate them on DS tokens.  The hljs TOKEN colors
   are global and already apply. */
.preview-markdown code {
  padding: 1px 4px;
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: color-mix(in srgb, var(--ink-4) 18%, transparent);
  border-radius: var(--r-sm);
}
.preview-markdown pre {
  padding: 12px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--panel);
  border: 1px solid var(--hair);
  border-radius: var(--r-sm);
}
.preview-markdown pre code {
  padding: 0;
  font-size: inherit;
  background: none;
}
.preview-markdown .katex-display {
  margin: 8px 0;
  overflow-x: auto;
}
/* Mermaid: mermaid.js draws a self-contained SVG, but without a width clamp a
   wide diagram overflows the pane (the .msg.assistant mermaid rules in chat.css
   don't reach .preview-markdown). */
.preview-markdown .mermaid-container {
  margin: 8px 0;
  text-align: center;
  overflow-x: auto;
}
.preview-markdown .mermaid-container svg {
  max-width: 100%;
  height: auto;
}
.preview-markdown img {
  max-width: 100%;
}

/* ----- table kind ----- */
.preview-tablewrap {
  overflow: auto;
  padding: 12px;
}
.preview-table {
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-2);
}
.preview-table th,
.preview-table td {
  padding: 6px 10px;
  border: 1px solid var(--hair);
  text-align: left;
  white-space: nowrap;
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.preview-table thead th {
  position: sticky;
  top: 0;
  background: var(--panel);
  padding: 0;
}
.preview-th {
  display: block;
  width: 100%;
  padding: 6px 10px;
  font: inherit;
  font-weight: 600;
  color: var(--ink);
  text-align: left;
  background: none;
  border: 0;
  cursor: pointer;
}
.preview-th:hover {
  background: color-mix(in srgb, var(--accent) 15%, transparent);
}
.preview-th:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.preview-table th[aria-sort] .preview-th::after {
  content: " ▲";
  font-size: 9px;
}
.preview-table th[aria-sort="descending"] .preview-th::after {
  content: " ▼";
}

/* ----- states ----- */
.preview-empty,
.preview-loading,
.preview-error {
  max-width: 44ch;
  margin: 24px auto;
  padding: 20px 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-3);
  text-align: center;
  overflow-wrap: anywhere;
}
.preview-error-msg {
  margin-bottom: 12px;
}
.preview-note {
  padding: 8px 12px;
  font-size: 11px;
  line-height: 1.5;
  color: var(--ink-3);
  border-top: 1px solid var(--hair);
}

/* ----- transcript chip (conversation.js buildPreviewChip) ----- */
.conv-preview-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  max-width: 100%;
  margin-top: 6px;
  padding: 3px 10px;
  font-size: 11px;
  color: var(--ink-2);
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  border: 1px solid var(--hair);
  border-radius: 3px;
  cursor: pointer;
}
.conv-preview-chip:hover {
  color: var(--ink);
  border-color: var(--ink-4);
}
.conv-preview-glyph {
  flex: none;
  color: var(--ink-3);
}
.conv-preview-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.conv-preview-kind {
  flex: none;
  padding: 0 5px;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-3);
  border: 1px solid var(--hair);
  border-radius: 3px;
}