:root {
  --bg: #212121;
  --sidebar-bg: #181818;
  --panel: #181818;
  --panel2: #2a2a2a;
  --text: #ececec;
  --muted: #9b9b9b;
  --line: #2f2f2f;
  --brand: #5470c6;
  --brand-hover: #6380dc;
  --button: #2a2a2a;
  --button-hover: rgba(255, 255, 255, 0.08);
  --button-active: rgba(255, 255, 255, 0.14);
  --button-hover-text: #ffffff;
  --canvas-bg: #11151b;
  --scrollbar-track: transparent;
  --scrollbar-thumb: #4a4a4a;
  --scrollbar-thumb-hover: #5c5c5c;
  --leftDockWidth: 288px;
  --peekStripWidth: 14px;
  --flyoutPeekHideDelayMs: 260ms;
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --sidebar-bg: #f7f7f8;
  --panel: #f7f7f8;
  --panel2: #ececec;
  --text: #1f2328;
  --muted: #6e6e7a;
  --line: #e4e4e7;
  --brand: #5470c6;
  --brand-hover: #6380dc;
  --button: #ffffff;
  --button-hover: rgba(0, 0, 0, 0.05);
  --button-active: rgba(0, 0, 0, 0.09);
  --button-hover-text: #111318;
  --canvas-bg: #f4f7fb;
  --scrollbar-track: transparent;
  --scrollbar-thumb: #cfd2d8;
  --scrollbar-thumb-hover: #b3b7c0;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; background: var(--bg); color: var(--text); font-family: "Segoe UI", "Inter", Arial, "Microsoft YaHei", sans-serif; -webkit-font-smoothing: antialiased; }
button { font: inherit; }

#rootContainer { position: relative; width: 100vw; height: 100vh; overflow: hidden; }

.mainArea {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  background: var(--bg);
  transition: margin-left 0.2s ease;
}
#rootContainer.leftDockPinned .mainArea { margin-left: var(--leftDockWidth); }

/* ---- Chat messages ---- */
.chatMessages { flex: 1; min-height: 0; overflow-y: auto; scrollbar-width: thin; scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track); }
.chatMessages[hidden] { display: none; }
.chatMessages::-webkit-scrollbar { width: 8px; }
.chatMessages::-webkit-scrollbar-thumb { border-radius: 999px; background: var(--scrollbar-thumb); }

.scrollToBottomBtn {
  position: absolute; left: 50%; bottom: 108px; transform: translateX(-50%); z-index: 20;
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line);
  background: var(--panel2); color: var(--text); display: flex; align-items: center; justify-content: center;
  cursor: pointer; box-shadow: 0 6px 16px rgba(0, 0, 0, 0.28);
  transition: opacity 0.15s ease, transform 0.15s ease;
}
.scrollToBottomBtn:hover { background: var(--button-hover); }
.scrollToBottomBtn[hidden] { display: none; }
.scrollToBottomBtn svg { width: 16px; height: 16px; }

.chatMessage { display: flex; gap: 14px; max-width: 760px; margin: 0 auto; padding: 18px 20px; }
.chatMessageAvatar {
  flex: 0 0 auto; width: 30px; height: 30px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 12.5px; font-weight: 700; overflow: hidden;
}
.chatMessageAvatarUser { background: var(--brand); color: #fff; }
.chatMessageAvatarAssistant { background: var(--panel2); border: 1px solid var(--line); }
.chatMessageAvatarAssistant img { width: 100%; height: 100%; object-fit: cover; }
.chatMessageBody { min-width: 0; flex: 1; padding-top: 4px; }
.chatMessageUser { justify-content: flex-end; }
.chatMessageUser .chatMessageBody { flex: 0 1 auto; max-width: 70%; }
.chatMessageUser .chatMessageText {
  background: var(--panel2); border-radius: 18px; padding: 10px 16px;
  white-space: pre-wrap; word-break: break-word; font-size: 14.5px; line-height: 1.55;
}
.chatMessageAssistant .chatMessageText { font-size: 14.5px; line-height: 1.65; color: var(--text); }
.aiErrorFeedback { display: grid; gap: 9px; }
.aiErrorFeedbackDetails {
  border: 1px solid var(--line); border-radius: 8px; background: color-mix(in srgb, var(--panel2) 72%, transparent);
  color: var(--muted); font-size: 12px;
}
.aiErrorFeedbackDetails summary { padding: 7px 10px; cursor: pointer; user-select: none; }
.aiErrorFeedbackDetails pre {
  margin: 0; padding: 0 10px 9px; overflow-x: auto; white-space: pre-wrap; word-break: break-word;
  background: transparent; font: 11.5px/1.5 "Cascadia Code", "SFMono-Regular", Consolas, monospace; color: var(--muted);
}
.aiErrorFeedbackMessage { font-weight: 650; }
.aiErrorFeedbackWarning .aiErrorFeedbackMessage { color: #f2c94c; }
.aiErrorFeedbackBanned .aiErrorFeedbackMessage { color: #ff6b6b; }
.chatTurnSpacer {
  height: min(46vh, 420px);
  flex: 0 0 auto;
  pointer-events: none;
}

/* ---- Inline scene card (AI-generated scene rendered at the end of a reply) ---- */
.sceneCard { width: 100%; margin-top: 12px; }
.sceneCardCanvasWrap {
  position: relative; width: 100%; aspect-ratio: 16 / 9; max-height: 420px;
  border: 1px solid var(--line); border-radius: 14px 14px 0 0; overflow: hidden;
  background: var(--canvas-bg); isolation: isolate; contain: paint;
}
.sceneCardCanvasWrap:fullscreen { max-height: none; border-radius: 0; aspect-ratio: auto; }
.sceneCardCanvas { display: block; width: 100%; height: 100%; }
.sceneCardLoadingMask {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  z-index: 2; background: rgba(0, 0, 0, 0.45); color: var(--muted); font-size: 13px;
  transition: inset 0.16s ease, padding 0.16s ease, border-radius 0.16s ease, background 0.16s ease;
}
.sceneCardLoadingMask.sceneCardLoadingMaskCompact {
  inset: 10px 10px auto auto; max-width: calc(100% - 20px); padding: 7px 10px;
  justify-content: flex-start; border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  border-radius: 999px; background: color-mix(in srgb, var(--panel2) 94%, transparent);
  color: var(--text); font-size: 12px; line-height: 1.35; pointer-events: none;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.24);
}
.sceneCardLoadingMask[hidden] { display: none; }
.sceneCardDraftBadge {
  position: absolute; top: 10px; left: 10px; z-index: 3; pointer-events: none;
  padding: 5px 11px; border-radius: 999px; font-size: 12px; line-height: 1.35;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  background: color-mix(in srgb, var(--panel2) 94%, transparent); color: var(--text);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.24);
}
.sceneCardDraftBadge[hidden] { display: none; }
.sceneCardTextureBadge {
  position: absolute; right: 10px; bottom: 10px; z-index: 3; pointer-events: none;
  padding: 5px 11px; border-radius: 999px; font-size: 12px; line-height: 1.35;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  background: color-mix(in srgb, var(--panel2) 94%, transparent); color: var(--text);
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.24);
}
.sceneCardTextureBadge[data-state="working"]::before {
  content: ""; width: 10px; height: 10px; margin-right: 7px; display: inline-block;
  border: 2px solid color-mix(in srgb, currentColor 30%, transparent);
  border-top-color: currentColor; border-radius: 50%; animation: threeboxSpin .8s linear infinite;
}
.sceneCardTextureBadge[data-state="warning"] { color: var(--warning, #f3b15c); }
.sceneCardTextureBadge[hidden] { display: none; }

/* ---- Scene card action bar (download / export / open-in-editor / open-in-player / refresh / fullscreen) ---- */
.sceneCardActionBar {
  display: flex; align-items: center; gap: 4px; padding: 6px 8px;
  border: 1px solid var(--line); border-top: none; border-radius: 0 0 14px 14px;
  background: var(--panel2);
}
.sceneCardActionBtn {
  flex: 0 0 auto; width: 28px; height: 28px; border-radius: 8px; border: none;
  background: transparent; color: var(--muted); font-size: 14px; line-height: 1;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
}
.sceneCardActionBtn:hover { background: var(--button-hover); color: var(--text); }
.sceneCardActionBtn:disabled { opacity: 0.5; cursor: default; background: transparent; }
.sceneCardActionBtn.sceneCardDownloadBtn { width: auto; padding-inline: 9px; gap: 4px; white-space: nowrap; }

/* ---- Post-generation summary (shown below the scene card when enabled in settings) ---- */
.sceneSummaryText { margin-top: 10px; font-size: 13.5px; line-height: 1.6; color: var(--muted); }

/* ---- Streaming raw-JSON preview (scroll-collapsed until generation finishes) ---- */
.streamingPreview {
  max-height: 92px; overflow-y: auto; background: #17171a; border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; margin: 4px 0 10px; font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  font-size: 12px; line-height: 1.55; color: #c9ccd3; white-space: pre-wrap; word-break: break-word;
  cursor: pointer; transition: max-height 0.18s ease;
}
.streamingPreview.expanded { max-height: 360px; }
.streamingPreview::-webkit-scrollbar { width: 6px; }
.streamingPreview::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 999px; }
.streamingPreviewPending { color: var(--muted); font-style: italic; font-family: inherit; }
.streamingPreviewProcessing::before,
.sceneCardLoadingMask::before {
  content: ""; width: 14px; height: 14px; margin-right: 9px; flex: 0 0 auto;
  display: inline-block; vertical-align: -2px; border: 2px solid color-mix(in srgb, currentColor 30%, transparent);
  border-top-color: currentColor; border-radius: 50%; animation: threeboxSpin .8s linear infinite;
}
.sceneCardLoadingMask { flex-direction: row; }
@keyframes threeboxSpin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) {
  .streamingPreviewProcessing::before,
  .sceneCardLoadingMask::before { animation-duration: 1.8s; }
}

/* ---- Collapsible final-JSON block ---- */
.jsonCollapse { margin: 4px 0 10px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: #17171a; }
.jsonCollapse summary {
  display: flex; align-items: center; gap: 8px; padding: 9px 8px 9px 12px;
  font-size: 12.5px; color: var(--muted); cursor: pointer; list-style: none; user-select: none;
}
.jsonCollapse summary:hover { color: var(--text); }
.jsonCollapse summary::-webkit-details-marker { display: none; }
.jsonCollapse summary::before { content: "▸ "; }
.jsonCollapse[open] summary::before { content: "▾ "; }
.jsonCollapseSummaryText { flex: 1; min-width: 0; }
.jsonCollapseCopyBtn {
  flex: 0 0 auto; width: 24px; height: 24px; border: none; background: transparent; color: var(--muted);
  cursor: pointer; border-radius: 6px; display: flex; align-items: center; justify-content: center;
  transition: background 0.12s ease, color 0.12s ease;
}
.jsonCollapseCopyBtn svg { width: 14px; height: 14px; }
.jsonCollapseCopyBtn:hover { background: var(--button-hover); color: var(--text); }
.jsonCollapseCopyBtn.copied { color: #6bd987; }
.jsonCollapse pre { margin: 0; padding: 0 12px 12px; overflow-x: auto; max-height: 400px; overflow-y: auto; }
.jsonCollapse code { font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace; font-size: 12px; line-height: 1.55; color: #d7dae0; }
.jsonCodeView { tab-size: 2; }
.jsonCodeLines { display: grid; min-width: max-content; }
.jsonCodeLine { display: grid; grid-template-columns: minmax(2.6em, auto) 1fr; min-height: 18px; }
.jsonCodeView:not(.jsonCodeViewLineNumbers) .jsonCodeLine { grid-template-columns: 1fr; }
.jsonCodeLineNumber {
  user-select: none;
  padding-right: 12px;
  color: var(--muted);
  opacity: 0.68;
  text-align: right;
  border-right: 1px solid var(--line);
}
.jsonCodeLineContent { padding-left: 12px; white-space: pre; }
.jsonCodeView:not(.jsonCodeViewLineNumbers) .jsonCodeLineContent { padding-left: 0; }
.jsonTokenKey { color: #8ab4f8; }
.jsonTokenString { color: #9ccc65; }
.jsonTokenNumber { color: #ffb74d; }
.jsonTokenLiteral { color: #ce93d8; }
.diffCollapse { background: #14181f; }

.chatMessageText.markdown-body p { margin: 0 0 10px; }
.chatMessageText.markdown-body p:last-child { margin-bottom: 0; }
.chatMessageText :is(h1, h2, h3) { margin: 14px 0 8px; font-weight: 700; line-height: 1.3; }
.chatMessageText ul, .chatMessageText ol { margin: 6px 0 10px; padding-left: 22px; }
.chatMessageText li { margin: 3px 0; }
.chatMessageText a { color: #8fb4ff; text-decoration: underline; text-underline-offset: 2px; }
.chatMessageText code { background: var(--panel2); border-radius: 4px; padding: 1px 5px; font-size: 0.9em; font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace; }
.chatMessageText pre {
  background: #17171a; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px;
  overflow-x: auto; margin: 8px 0 12px;
}
.chatMessageText pre code { background: transparent; padding: 0; font-size: 12.5px; line-height: 1.55; color: #d7dae0; }
.chatHero { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; padding: 24px; overflow: auto; }
.chatHero[hidden] { display: none; }
.chatHeroInner { max-width: 640px; width: 100%; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 12px; }
.chatHeroLogo { width: 52px; height: 52px; object-fit: contain; border-radius: 14px; margin-bottom: 4px; }
.chatHeroTitle { font-size: 28px; font-weight: 600; margin: 0; color: var(--text); letter-spacing: -0.01em; }
.chatHeroSubtitle { font-size: 15px; color: var(--muted); margin: 0; }
.chatHeroSuggestions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 10px; }
.chatSuggestionChip {
  padding: 9px 16px; border: 1px solid var(--line); border-radius: 20px;
  background: var(--panel2); color: var(--text); font-size: 13.5px; cursor: pointer;
  transition: background 0.12s ease, border-color 0.12s ease;
}
.chatSuggestionChip:hover { background: var(--button-hover); border-color: var(--brand); }

/* ---- Composer ---- */
.chatComposerBar { flex: 0 0 auto; display: flex; flex-direction: column; align-items: center; padding: 0 20px 22px; }
.chatComposer {
  width: 100%; max-width: 760px; display: flex; flex-direction: column;
  border: 1px solid var(--line); border-radius: 26px;
  background: var(--panel2); box-shadow: 0 6px 24px rgba(0, 0, 0, 0.24);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.chatComposer.dragOver { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(84, 112, 198, 0.25); }
.composerInputRow { display: flex; align-items: flex-end; gap: 6px; padding: 8px 10px; }
.composerIconBtn {
  flex: 0 0 auto; width: 34px; height: 34px; border-radius: 50%; border: none;
  background: var(--button); color: var(--muted); display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: background 0.12s ease, color 0.12s ease;
}
.composerIconBtn:hover { background: var(--button-hover); color: var(--text); }
.composerIconBtn svg { width: 18px; height: 18px; }
.composerInput {
  flex: 1; min-width: 0; resize: none; border: none; background: transparent;
  color: var(--text); font-size: 15px; line-height: 1.5; padding: 8px 4px; max-height: 200px;
  font-family: inherit;
}
.composerInput:focus { outline: none; }
.composerInput::placeholder { color: var(--muted); }
.composerActions { flex: 0 0 auto; display: flex; align-items: center; gap: 8px; padding-bottom: 2px; }
.composerModelSelect {
  height: 30px; padding: 0 10px; border: 1px solid var(--line); border-radius: 14px;
  background: var(--button); color: var(--muted); font-size: 12px; max-width: 140px;
}
.composerSendBtn {
  flex: 0 0 auto; width: 34px; height: 34px; border-radius: 50%; border: none;
  background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center;
  cursor: pointer; transition: background 0.12s ease;
}
.composerSendBtn:hover { background: var(--brand-hover); }
.composerSendBtn:disabled { opacity: .68; cursor: wait; background: var(--brand); }
.composerSendBtn svg { width: 16px; height: 16px; }
.composerSendBtnStop { background: #5a5f6b; }
.composerSendBtnStop:hover { background: #6b7280; }
.composerHint { margin-top: 10px; font-size: 11.5px; color: var(--muted); text-align: center; max-width: 760px; }

/* ---- Chat retry button (shown below a failed/stopped assistant turn) ---- */
.chatRetryBtn {
  margin-top: 8px; padding: 7px 14px; border: 1px solid var(--line); border-radius: 9px;
  background: var(--button); color: var(--text); font-size: 12.5px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
}
.chatRetryBtn:hover { border-color: var(--brand); }
.chatRetryBtn:disabled { opacity: 0.5; cursor: default; }
.chatRetryBtn svg { width: 13px; height: 13px; }

/* ---- Attached scene context (template picked from gallery, or a pending upload) ---- */
.attachedContextRow { padding: 10px 10px 0; }
.attachedContextRow[hidden] { display: none; }

.attachedContextExpanded { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--panel); margin-bottom: 2px; }
.attachedContextHeader { display: flex; align-items: center; gap: 6px; padding: 7px 8px 7px 12px; font-size: 12px; }
.attachedContextLabel { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text); }
.attachedContextHeaderBtn {
  border: none; background: transparent; color: var(--muted); cursor: pointer; width: 22px; height: 22px;
  border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 14px; line-height: 1;
}
.attachedContextHeaderBtn:hover { background: var(--button-hover); color: var(--text); }
.attachedContextCanvasWrap { position: relative; height: 140px; background: var(--canvas-bg); }
.attachedContextCanvasWrap .sceneCard { width: 100%; height: 140px; margin-top: 0; }
.attachedContextCanvasWrap .sceneCardCanvasWrap { width: 100%; height: 140px; aspect-ratio: auto; max-height: none; border: none; border-radius: 0; }
.attachedContextCanvasWrap .sceneCardActionBar { display: none; }
.attachedContextCanvasWrap:fullscreen { height: 100vh; }
.attachedContextCanvasWrap:fullscreen .sceneCard,
.attachedContextCanvasWrap:fullscreen .sceneCardCanvasWrap { height: 100%; }

.attachedContextChip {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 8px 3px 4px; margin-bottom: 8px;
  border: 1px solid var(--line); border-radius: 18px; background: var(--panel); font-size: 12px; color: var(--text); cursor: pointer;
}
.attachedContextChip:hover { border-color: var(--brand); }
.attachedContextChipThumb {
  width: 24px; height: 24px; border-radius: 50%; background: var(--canvas-bg); flex: 0 0 auto;
  display: flex; align-items: center; justify-content: center; color: var(--muted);
}
.attachedContextChipThumb svg { width: 13px; height: 13px; }
.attachedContextChipLabel { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attachedContextChipRemoveBtn {
  color: var(--muted); cursor: pointer; width: 16px; height: 16px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center; font-size: 13px; line-height: 1;
}
.attachedContextChipRemoveBtn:hover { background: var(--button-hover); color: var(--text); }

/* ---- Left dock: pinned-by-default, auto-hide + edge-hover reveal ---- */
.flyoutHost {
  position: absolute;
  z-index: 55;
  top: 0;
  bottom: 0;
  pointer-events: none;
}
.flyoutHostLeft {
  left: 0;
  width: var(--peekStripWidth);
  transition: width 0.2s ease;
}
#rootContainer.leftDockPinned .flyoutHostLeft,
#rootContainer.leftDockPeek .flyoutHostLeft {
  width: var(--leftDockWidth);
}

.edgeHoverZone { position: absolute; top: 0; bottom: 0; pointer-events: none; }
.edgeHoverZoneLeft { left: 0; width: var(--peekStripWidth); }
#rootContainer:not(.leftDockPinned) .flyoutHostLeft .edgeHoverZoneLeft { pointer-events: auto; }

.leftDock {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  width: var(--leftDockWidth);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--line);
  box-shadow: 6px 0 18px rgba(0, 0, 0, 0.28);
  transition: transform 0.2s ease;
  pointer-events: none;
}
#rootContainer:not(.leftDockPinned):not(.leftDockPeek) .flyoutHostLeft .leftDock {
  transform: translateX(-100%);
}
#rootContainer.leftDockPinned .leftDock,
#rootContainer.leftDockPeek .leftDock {
  pointer-events: auto;
}

.sidebarHeaderRow { display: flex; align-items: center; gap: 10px; padding: 16px 14px 12px; }
.brand { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; text-decoration: none; color: var(--text); }
.brand img { height: 30px; width: 30px; object-fit: contain; display: block; flex: 0 0 auto; border-radius: 8px; }
.brandText { display: flex; flex-direction: column; min-width: 0; }
.brandTitle { font-weight: 700; font-size: 16px; line-height: 1.25; letter-spacing: -0.01em; }
.brandSubtitle { font-size: 11.5px; color: var(--muted); line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.sidebarPinRow { display: flex; align-items: center; padding: 0 10px 10px; }
.sidebarPinBtn {
  display: flex; align-items: center; gap: 7px;
  border: none; background: transparent; color: var(--muted);
  font-size: 12.5px; padding: 6px 8px; border-radius: 8px; cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
}
.sidebarPinBtn:hover { background: var(--button-hover); color: var(--button-hover-text); }
.sidebarPinBtn[aria-pressed="true"] { color: var(--brand); }
.sidebarPinIcon { width: 14px; height: 14px; }

.sidebarBody { flex: 1; min-height: 0; overflow-y: auto; display: flex; flex-direction: column; padding-bottom: 10px; }
.sidebarStubHint { padding: 8px 14px; color: var(--muted); font-size: 12.5px; line-height: 1.6; }
.sidebarHistoryEmptyCompact { display: none; }

.sidebarBody, .chatMessages {
  scrollbar-width: thin;
  scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}
.sidebarBody::-webkit-scrollbar { width: 8px; }
.sidebarBody::-webkit-scrollbar-track { background: transparent; }
.sidebarBody::-webkit-scrollbar-thumb { border-radius: 999px; background: var(--scrollbar-thumb); }
.sidebarBody::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }

/* ---- Nav buttons (AI config / new chat / search chat) ---- */
.sidebarNav { display: flex; flex-direction: column; padding: 4px 10px 10px; gap: 2px; }
.sidebarNavBtn {
  display: flex; align-items: center; gap: 12px;
  width: 100%; height: 40px; padding: 0 10px; border: none; border-radius: 10px;
  background: transparent; color: var(--text); font-size: 14px; text-align: left; cursor: pointer;
  transition: background 0.12s ease;
}
.sidebarNavBtn:hover { background: var(--button-hover); }
.sidebarNavBtn svg { width: 16px; height: 16px; flex: 0 0 auto; color: var(--muted); }
#navNewChatBtn svg { color: var(--brand); }

/* ---- Collapsible sections (template gallery / projects / apps) ---- */
.sidebarSection { padding: 2px 4px; border-radius: 8px; transition: background-color 0.3s ease; }
.sidebarSectionHighlight { background-color: var(--brand-soft, rgba(99, 102, 241, 0.15)); }
.sidebarSectionTitle {
  display: flex; align-items: center; gap: 6px; padding: 10px 12px; font-size: 12px; font-weight: 700;
  color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; cursor: pointer; user-select: none;
  list-style: none; border-radius: 8px;
}
.sidebarSectionTitle:hover { color: var(--text); background: var(--button-hover); }
.sidebarSectionTitle::-webkit-details-marker { display: none; }
.sidebarSectionTitle::before { content: "\25b8"; display: inline-block; width: 10px; color: var(--muted); transition: transform 0.15s ease; font-size: 10px; }
details[open] > .sidebarSectionTitle::before { transform: rotate(90deg); }
.sidebarSectionBody { padding: 6px 10px 14px; display: flex; flex-direction: column; gap: 10px; }
.sidebarHistoryTitle { cursor: default; }
.sidebarHistoryTitle:hover { background: transparent; color: var(--muted); }
.sidebarHistoryTitle::before { content: none; }

.appLinkCard {
  display: flex; align-items: center; gap: 10px; padding: 9px 10px; border: 1px solid var(--line); border-radius: 9px;
  color: var(--text); text-decoration: none; font-size: 13px; background: var(--panel2);
}
.appLinkCard:hover { border-color: var(--brand); background: var(--button-hover); }
.appLinkCard svg { width: 15px; height: 15px; color: var(--muted); flex: 0 0 auto; }

.sidebarSearchInput, .searchChatResults input {
  height: 34px; padding: 0 12px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--button); color: var(--text); font-size: 13px; width: 100%;
}
.sidebarSearchInput::placeholder { color: var(--muted); }

.templateGrid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.templateCard {
  display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 12px;
  overflow: hidden; background: var(--panel2); cursor: pointer; text-align: left; padding: 0;
  transition: border-color 0.12s ease, transform 0.12s ease;
}
.templateCard:hover { border-color: var(--brand); transform: translateY(-1px); }
.templateCardThumb { width: 100%; aspect-ratio: 8 / 5; background: var(--canvas-bg); object-fit: contain; display: block; padding: 18%; box-sizing: border-box; }
.templateCardThumb.captured { object-fit: cover; padding: 0; }
.templateCardLabel { padding: 7px 8px; font-size: 12px; color: var(--text); line-height: 1.3; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---- Resource library (composer-uploaded files) ---- */
.resourceCategoryTabs { display: flex; flex-wrap: wrap; gap: 4px; }
.resourceCategoryTab {
  padding: 4px 9px; border: 1px solid var(--line); border-radius: 999px; background: transparent;
  color: var(--muted); font-size: 11.5px; cursor: pointer; transition: background 0.12s ease, color 0.12s ease;
}
.resourceCategoryTab:hover { color: var(--text); }
.resourceCategoryTab.active { background: var(--brand); border-color: var(--brand); color: #fff; }
.resourceList { display: flex; flex-direction: column; gap: 4px; max-height: 260px; overflow-y: auto; }
.resourceList::-webkit-scrollbar { width: 6px; }
.resourceList::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 999px; }
.resourceItem {
  display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 8px;
  cursor: default; color: var(--text);
}
.resourceItem.resourceItemLoadable { cursor: pointer; }
.resourceItem.resourceItemLoadable:hover { background: var(--button-hover); }
.resourceItemIcon { flex: 0 0 auto; width: 16px; height: 16px; color: var(--muted); }
.resourceItemIcon svg { width: 100%; height: 100%; }
.resourceItemInfo { flex: 1; min-width: 0; }
.resourceItemName { font-size: 12.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.resourceItemMeta { font-size: 10.5px; color: var(--muted); }
.resourceItemRemoveBtn {
  flex: 0 0 auto; width: 20px; height: 20px; border: none; background: transparent; color: var(--muted);
  cursor: pointer; border-radius: 6px; font-size: 13px; line-height: 1;
}
.resourceItemRemoveBtn:hover { background: var(--button-hover); color: var(--text); }

.projectList { display: flex; flex-direction: column; gap: 2px; }
.projectItem { display: flex; align-items: center; gap: 6px; padding: 8px 10px; border-radius: 8px; font-size: 13.5px; color: var(--text); cursor: pointer; }
.projectItem:hover { background: var(--button-hover); }
.sidebarInlineBtn {
  align-self: flex-start; padding: 6px 12px; border: 1px dashed var(--line); border-radius: 8px;
  background: transparent; color: var(--muted); font-size: 12.5px; cursor: pointer;
}
.sidebarInlineBtn:hover { color: var(--text); border-color: var(--brand); }

/* ---- Chat history list ---- */
.historyList { display: flex; flex-direction: column; padding: 0 6px; gap: 1px; }
.historyItem {
  position: relative; display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; border-radius: 9px; cursor: pointer;
}
.historyItem:hover { background: var(--button-hover); }
.historyItem.active { background: var(--button-active); }
.historyItemPin { flex: 0 0 auto; width: 12px; height: 12px; color: var(--brand); }
.historyItemPin[hidden] { display: none; }
.historyItemBody { min-width: 0; flex: 1; }
.historyItemTitle { font-size: 13.5px; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.historyItemMeta { font-size: 11px; color: var(--muted); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.historyItemMenuBtn {
  flex: 0 0 auto; width: 24px; height: 24px; border: none; border-radius: 6px;
  background: transparent; color: var(--muted); cursor: pointer; opacity: 0; display: flex; align-items: center; justify-content: center;
}
.historyItem:hover .historyItemMenuBtn, .historyItemMenuBtn.menuOpen { opacity: 1; }
.historyItemMenuBtn:hover { background: var(--button-active); color: var(--text); }
.sidebarArchiveSection .sidebarSectionTitle { padding: 8px 12px; font-size: 11px; }

/* ---- Footer / user menu ---- */
.sidebarFooter { position: relative; flex: 0 0 auto; border-top: 1px solid var(--line); padding: 6px; }
.userMenuBtn {
  display: flex; align-items: center; gap: 10px; width: 100%; height: 46px; padding: 0 8px;
  border: none; border-radius: 10px; background: transparent; color: var(--text); cursor: pointer; text-align: left;
}
.userMenuBtn:hover { background: var(--button-hover); }
.userAvatar {
  flex: 0 0 auto; width: 28px; height: 28px; border-radius: 50%;
  background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 12.5px; font-weight: 700;
}
.userName { font-size: 13.5px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.userMenuPanel {
  position: absolute; left: 8px; right: 8px; bottom: calc(100% + 6px); z-index: 60;
  display: flex; flex-direction: column; gap: 2px; padding: 6px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--panel2); box-shadow: 0 10px 26px rgba(0,0,0,0.32);
}
.userMenuPanel[hidden] { display: none; }
.userMenuPanel button {
  border: none; background: transparent; color: var(--text); font-size: 13px; text-align: left;
  padding: 8px 10px; border-radius: 7px; cursor: pointer;
}
.userMenuPanel button:hover { background: var(--button-hover); }

/* ---- Modal (search chat) ---- */
.modalOverlay { position: fixed; inset: 0; z-index: 70; display: flex; align-items: center; justify-content: center; padding: 20px; background: rgba(0,0,0,0.55); }
.modalOverlay[hidden] { display: none; }
.modalDialog { width: min(440px, 100%); max-height: 80vh; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 14px; background: var(--panel2); box-shadow: 0 18px 50px rgba(0,0,0,0.42); }
.cloudMigrationDialog { width: min(620px, 100%); }
.cloudMigrationBody { display: grid; gap: 14px; overflow-y: auto; }
.cloudMigrationChoices, .cloudMigrationForm { display: grid; gap: 12px; }
.cloudMigrationChoice { display: grid; gap: 4px; width: 100%; padding: 14px; text-align: left; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--text); }
.cloudMigrationChoice.primary { border-color: var(--brand); }
.cloudMigrationChoice small, .cloudMigrationStatus { color: var(--muted); line-height: 1.45; }
.cloudMigrationWarning { padding: 11px 13px; border: 1px solid color-mix(in srgb, #e5a12e 50%, var(--line)); border-radius: 9px; background: color-mix(in srgb, #e5a12e 10%, var(--panel)); line-height: 1.55; }
.cloudMigrationForm > label { display: grid; gap: 6px; color: var(--muted); font-size: 12px; }
.cloudMigrationForm input:not([type="checkbox"]) { width: 100%; min-height: 36px; padding: 7px 9px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); color: var(--text); }
.cloudMigrationInline { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; }
.cloudMigrationCheck { display: flex !important; grid-template-columns: none; flex-direction: row; align-items: flex-start; gap: 8px !important; color: var(--text) !important; }
.cloudMigrationCheck input { margin-top: 2px; }
.cloudMigrationAgreements { display: grid; gap: 7px; }
.cloudMigrationAgreements details { border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; }
.cloudMigrationAgreements pre { max-height: 170px; overflow: auto; white-space: pre-wrap; color: var(--muted); font: 12px/1.55 inherit; }
.cloudMigrationError { min-height: 18px; color: #e46b63; font-size: 12px; }
.modalHeader { padding: 16px 18px; border-bottom: 1px solid var(--line); font-weight: 700; font-size: 15px; }
.modalBody { display: grid; gap: 12px; padding: 16px 18px; min-height: 0; overflow: auto; }
.modalFooter { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 18px 16px; }
.modalFooter button { height: 34px; padding: 0 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--button); color: var(--text); cursor: pointer; }
.modalFooter button.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.threeboxNotificationBell { position: fixed; top: 16px; right: 18px; z-index: 91; display: grid; place-items: center; width: 38px; height: 38px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: var(--panel2); color: var(--text); cursor: pointer; box-shadow: 0 7px 22px rgba(0,0,0,.28); }
.threeboxNotificationBell:hover { background: var(--button-hover); }
.threeboxNotificationBell:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.threeboxNotificationBell svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; pointer-events: none; }
.threeboxNotificationBell em { position: absolute; top: -5px; right: -5px; min-width: 17px; padding: 1px 4px; border-radius: 10px; background: #e35d6a; color: #fff; font: 700 10px/15px system-ui; font-style: normal; }
.threeboxNotificationInbox {
  position: fixed; top: 62px; right: 18px; z-index: 91;
  width: min(380px,calc(100vw - 36px)); max-height: min(540px,calc(100vh - 84px));
  overflow-x: hidden; overflow-y: auto; scrollbar-gutter: stable;
  scrollbar-width: thin; scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
  padding: 13px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--panel2); box-shadow: 0 14px 42px rgba(0,0,0,.42);
}
.threeboxNotificationInbox::-webkit-scrollbar { width: 8px; }
.threeboxNotificationInbox::-webkit-scrollbar-track { background: var(--scrollbar-track); }
.threeboxNotificationInbox::-webkit-scrollbar-thumb {
  min-height: 36px; border: 2px solid transparent; border-radius: 999px;
  background: var(--scrollbar-thumb); background-clip: padding-box;
}
.threeboxNotificationInbox::-webkit-scrollbar-thumb:hover { background-color: var(--scrollbar-thumb-hover); }
.threeboxNotificationInbox::-webkit-scrollbar-button { display: none; width: 0; height: 0; }
.threeboxNoticeHeader { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 2px 2px 4px; }
.threeboxNoticeHeader span,.threeboxNoticeEmpty { color: var(--muted); font-size: 12px; }
.threeboxNoticeEmpty { margin: 18px 4px; text-align: center; }
.threeboxNoticeItem { position: relative; display: grid; gap: 6px; margin-top: 10px; padding: 11px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); cursor: pointer; }
.threeboxNoticeItem:hover { border-color: var(--brand); }
.threeboxNoticeItem:focus-visible { outline: 2px solid var(--brand); outline-offset: 1px; }
.threeboxNoticeItem.unread { border-left: 3px solid var(--brand); }
.threeboxNoticeItem.level-warning { border-left-color: #e9a43a; }
.threeboxNoticeItem.level-important { border-left-color: #e35d6a; }
.threeboxNoticeItem.read { opacity: .66; }
.threeboxNoticeItem small { color: var(--muted); }
.threeboxNoticeBody,.threeboxBuiltinNoticeBody { min-width: 0; line-height: 1.5; overflow-wrap: anywhere; }
.threeboxNoticeBody > :first-child,.threeboxBuiltinNoticeBody > :first-child { margin-top: 0; }
.threeboxNoticeBody > :last-child,.threeboxBuiltinNoticeBody > :last-child { margin-bottom: 0; }
.threeboxNoticeBody p,.threeboxBuiltinNoticeBody p { margin: 5px 0; }
.threeboxNoticeBody h1,.threeboxNoticeBody h2,.threeboxNoticeBody h3,.threeboxNoticeBody h4,.threeboxBuiltinNoticeBody h1,.threeboxBuiltinNoticeBody h2,.threeboxBuiltinNoticeBody h3,.threeboxBuiltinNoticeBody h4 { margin: 6px 0 3px; font-size: 14px; }
.threeboxNoticeBody pre,.threeboxBuiltinNoticeBody pre { max-width: 100%; overflow: auto; padding: 7px; border-radius: 6px; background: #0003; }
.threeboxNoticeBody a,.threeboxBuiltinNoticeBody a { color: #88aaff; }
.threeboxBuiltinNotice { position: fixed; top: 68px; right: 18px; z-index: 92; display: grid; gap: 7px; width: min(360px,calc(100vw - 36px)); max-height: min(300px,calc(100vh - 92px)); overflow: auto; padding: 14px; border: 1px solid #6575bd; border-radius: 11px; background: #26355a; color: #fff; text-align: left; cursor: pointer; box-shadow: 0 10px 30px #0008; }
.threeboxBuiltinNotice.level-warning { border-color: #e9a43a; }
.threeboxBuiltinNotice.level-important { border-color: #e35d6a; }
.helpContactList { display: flex; flex-direction: column; gap: 8px; margin: 0; padding: 0; list-style: none; font-size: 13px; }
.helpContactList a { color: var(--brand); }

/* ---- Scene-card third-party model export ---- */
.threeBoxMeshExportDialog { width: min(480px, 100%); }
.threeBoxMeshExportBody { gap: 14px; }
.threeBoxMeshExportField { display: grid; grid-template-columns: 104px minmax(0, 1fr); align-items: center; gap: 12px; color: var(--muted); font-size: 13px; }
.threeBoxMeshExportField select {
  width: 100%; height: 38px; padding: 0 34px 0 11px; border: 1px solid var(--line); border-radius: 9px;
  background: var(--button); color: var(--text); font: inherit; outline: none;
}
.threeBoxMeshExportField select:focus { border-color: var(--brand); box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand) 20%, transparent); }
.threeBoxMeshExportScope { display: grid; grid-template-columns: 104px minmax(0, 1fr); gap: 12px; font-size: 13px; color: var(--muted); }
.threeBoxMeshExportScope strong { color: var(--text); font-weight: 600; }
.threeBoxMeshExportHint { margin: 2px 0 0; padding: 11px 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--panel); color: var(--muted); font-size: 12px; line-height: 1.55; }
.threeBoxMeshExportWarningDialog .modalHeader { color: #f4c46b; }
.threeBoxMeshExportWarningIntro { margin: 0; color: var(--text); font-size: 13px; line-height: 1.55; }
.threeBoxMeshExportWarningList { margin: 0; padding: 10px 10px 10px 30px; max-height: min(42vh, 320px); overflow: auto; border: 1px solid color-mix(in srgb, #f4c46b 35%, var(--line)); border-radius: 9px; background: color-mix(in srgb, #f4c46b 7%, var(--panel)); color: var(--muted); font-size: 12px; line-height: 1.55; }
.threeBoxMeshExportWarningList li { padding: 3px 0; overflow-wrap: anywhere; }

/* ---- Settings modal ---- */
.settingsDialog { width: min(680px, 100%); height: min(560px, 84vh); }
.settingsBody { flex: 1; min-height: 0; display: flex; }
.settingsNav { flex: 0 0 168px; padding: 10px; border-right: 1px solid var(--line); display: flex; flex-direction: column; gap: 2px; overflow-y: auto; }
.settingsNavBtn {
  display: block; width: 100%; padding: 9px 12px; border: none; border-radius: 8px;
  background: transparent; color: var(--muted); font-size: 13.5px; text-align: left; cursor: pointer;
}
.settingsNavBtn:hover { background: var(--button-hover); color: var(--text); }
.settingsNavBtn.active { background: var(--button-active); color: var(--text); font-weight: 600; }
.settingsScroll {
  flex: 1; min-width: 0; padding: 18px 22px; overflow-y: auto; display: flex; flex-direction: column; gap: 16px;
  scrollbar-width: thin; scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}
.settingsScroll::-webkit-scrollbar { width: 8px; }
.settingsScroll::-webkit-scrollbar-track { background: transparent; }
.settingsScroll::-webkit-scrollbar-thumb { border-radius: 999px; background: var(--scrollbar-thumb); }
.settingsScroll::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }
.settingsNav {
  scrollbar-width: thin; scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}
.settingsNav::-webkit-scrollbar { width: 8px; }
.settingsNav::-webkit-scrollbar-thumb { border-radius: 999px; background: var(--scrollbar-thumb); }
.settingsSectionPanel[hidden] { display: none; }
.settingsSectionPanel { display: flex; flex-direction: column; gap: 14px; }
.settingsField {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(160px, 280px);
  align-items: center; column-gap: 16px; row-gap: 6px;
}
.settingsFieldLabel { min-width: 0; font-size: 13.5px; color: var(--text); }
.settingsFieldControl {
  min-width: 0; width: 100%; display: flex; align-items: center; justify-content: flex-end; gap: 8px;
}
.settingsFieldControl select, .settingsFieldControl input[type="text"], .settingsFieldControl input[type="number"], .settingsFieldControl input[type="password"] {
  height: 32px; padding: 0 10px; border: 1px solid var(--line); border-radius: 8px;
  flex: 1 1 auto; width: 100%; min-width: 0; box-sizing: border-box;
  background: var(--button); color: var(--text); font-size: 13px;
}
.settingsFieldControl input[type="checkbox"] { width: 17px; height: 17px; accent-color: var(--brand); cursor: pointer; }
.settingsField:has(input[type="checkbox"]) { grid-template-columns: minmax(0, 1fr) auto; }
.settingsField:has(input[type="checkbox"]) .settingsFieldControl { width: auto; }
.settingsField:has(textarea) { grid-template-columns: minmax(0, 1fr); align-items: stretch; gap: 6px; }
.settingsField:has(textarea) .settingsFieldControl { grid-column: 1; width: 100%; }
.settingsFieldControl textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--button); color: var(--text); font-size: 13px; font-family: inherit;
  resize: vertical; box-sizing: border-box;
}
.settingsSectionHeading { font-size: 12px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; margin: 4px 0 -4px; }

.providerList { display: flex; flex-direction: column; gap: 10px; }
.providerCard { border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: flex; flex-direction: column; gap: 8px; background: var(--panel); }
.providerCardRow { display: flex; align-items: center; gap: 8px; }
.providerCardRow label { flex: 0 0 68px; font-size: 12px; color: var(--muted); }
.providerCardRow input, .providerCardRow select {
  flex: 1; min-width: 0; height: 30px; padding: 0 9px; border: 1px solid var(--line); border-radius: 7px;
  background: var(--button); color: var(--text); font-size: 12.5px;
}
.providerSecretControl { position: relative; flex: 1; min-width: 0; }
.providerCardRow .providerSecretControl input {
  width: 100%; box-sizing: border-box; padding-right: 36px;
}
.providerApiKeyInput::-ms-reveal { display: none; }
.providerSecretToggle {
  position: absolute; top: 50%; right: 4px; width: 28px; height: 26px; padding: 0;
  transform: translateY(-50%); display: grid; place-items: center;
  border: 0; border-radius: 6px; background: transparent; color: var(--muted); cursor: pointer;
}
.providerSecretToggle:hover { background: var(--button-hover); color: var(--text); }
.providerSecretToggle:focus-visible { outline: 2px solid var(--brand); outline-offset: -2px; }
.providerSecretToggle svg {
  width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.5;
  stroke-linecap: round; stroke-linejoin: round; pointer-events: none;
}
.providerCardDeleteBtn {
  align-self: flex-end; border: none; background: transparent; color: var(--muted);
  font-size: 12px; cursor: pointer; padding: 3px 6px; border-radius: 6px;
}
.providerCardDeleteBtn:hover { background: var(--button-hover); color: #e5654a; }
.addProviderBtn {
  align-self: flex-start; padding: 8px 14px; border: 1px dashed var(--line); border-radius: 9px;
  background: transparent; color: var(--muted); font-size: 12.5px; cursor: pointer;
}
.addProviderBtn:hover { color: var(--text); border-color: var(--brand); }
.settingsEmptyHint { padding: 10px 0; color: var(--muted); font-size: 12.5px; }
.settingsFieldHint {
  grid-column: 2; min-width: 0; padding: 0 0 2px;
  color: var(--muted); font-size: 11.5px; line-height: 1.5;
}
.providerCardBuiltin { border-style: dashed; }
.providerBuiltinHeading { font-size: 12.5px; font-weight: 600; color: var(--text); }
.providerBuiltinIdControl { flex: 1; display: flex; align-items: center; gap: 8px; min-width: 0; }
.providerBuiltinIdControl code {
  flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-size: 12px; padding: 4px 8px; border-radius: 6px; background: var(--button); color: var(--text);
}
.settingsButtonRow { display: flex; gap: 10px; flex-wrap: wrap; }
.settingsActionBtn {
  padding: 8px 14px; border: 1px solid var(--line); border-radius: 9px;
  background: var(--button); color: var(--text); font-size: 12.5px; cursor: pointer;
}
.settingsActionBtn:hover { border-color: var(--brand); color: var(--text); }
.searchChatResults { display: flex; flex-direction: column; gap: 4px; max-height: 320px; overflow: auto; }
.searchChatResultItem { padding: 10px 11px; border-radius: 9px; cursor: pointer; }
.searchChatResultItem:hover { background: var(--button-hover); }
.searchChatResultTitle { font-size: 13.5px; color: var(--text); }
.searchChatResultMeta { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.searchChatEmptyHint { padding: 14px; color: var(--muted); font-size: 12.5px; text-align: center; }

/* ---- Context menu (history item pin/archive/move-to-project/delete) ---- */
.contextMenu {
  position: fixed; z-index: 90; min-width: 170px; padding: 6px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--panel2); box-shadow: 0 10px 26px rgba(0,0,0,0.32);
}
.contextMenu[hidden] { display: none; }
.contextMenu button {
  display: block; width: 100%; padding: 8px 10px; border: none; border-radius: 7px;
  background: transparent; color: var(--text); font-size: 13px; text-align: left; cursor: pointer;
}
.contextMenu button:hover { background: var(--button-hover); }
.contextMenu button.contextMenuDanger {
  color: #f56c6c; border-top: 1px solid var(--line); border-radius: 0 0 7px 7px; margin-top: 5px; padding-top: 10px;
}
.contextMenu button.contextMenuDanger:hover { background: rgba(245, 108, 108, 0.12); color: #ff8a8a; }
.contextMenuSubLabel { padding: 8px 10px 2px; font-size: 10.5px; color: var(--muted); text-transform: uppercase; border-top: 1px solid var(--line); margin-top: 4px; }
.contextMenuSubList { display: flex; flex-direction: column; max-height: 140px; overflow: auto; }
.contextMenuSubList .contextMenuEmptyHint { padding: 6px 10px; color: var(--muted); font-size: 11.5px; }

.messageToast { position: fixed; left: 50%; top: 20px; z-index: 80; min-width: 220px; max-width: min(520px, calc(100vw - 32px)); padding: 10px 15px; border: 1px solid rgba(255,255,255,0.12); border-radius: 10px; background: rgba(28,28,28,0.96); color: var(--text); box-shadow: 0 12px 30px rgba(0,0,0,0.32); opacity: 0; transform: translate(-50%, -12px); pointer-events: none; transition: opacity .18s ease, transform .18s ease; font-size: 13.5px; }
.messageToast.visible { opacity: 1; transform: translate(-50%, 0); }

/* ---- Mobile menu button (top-left of the main chat column, opens the sidebar as an overlay) ---- */
.mobileMenuBtn {
  display: none; position: absolute; top: 12px; left: 12px; z-index: 70;
  width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--panel2); color: var(--text); align-items: center; justify-content: center; cursor: pointer;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.24); touch-action: manipulation;
}
.mobileMenuBtn svg { width: 16px; height: 16px; }
.mobileDockBackdrop { display: none; }

/* ---- Phone width: sidebar is always an overlay drawer (never pushes content), opened via
   #mobileMenuBtn instead of edge-hover (no hover state on touch); pin/unpin is meaningless here
   so the pin row is hidden and threeBoxViewChrome.js forces leftDockPinned=false on this
   viewport regardless of the desktop-persisted preference. ---- */
@media (max-width: 720px) {
  html, body { height: 100dvh; }
  #rootContainer {
    height: 100dvh;
    /* Reserve a usable dismissal strip even on the narrowest phone viewports. */
    --leftDockWidth: min(288px, calc(100vw - 64px));
  }
  .threeBoxMeshExportField,
  .threeBoxMeshExportScope { grid-template-columns: 1fr; gap: 6px; }
  .mobileMenuBtn { display: flex; width: 44px; height: 44px; }
  #rootContainer.leftDockPeek .mobileMenuBtn {
    left: calc(var(--leftDockWidth) + 8px);
    background: var(--panel2);
  }
  /* Floating notification controls otherwise cover the dismissal button on small phones. */
  body:has(#rootContainer.leftDockPeek) .threeboxNotificationBell,
  body:has(#rootContainer.leftDockPeek) .threeboxNotificationInbox { visibility: hidden; }
  #rootContainer.leftDockPinned .mainArea { margin-left: 0; }
  .sidebarPinRow { display: none; }
  /* The backdrop must cover the page immediately, including while the drawer slides in. */
  .flyoutHostLeft { width: var(--peekStripWidth); transition: none; }
  .edgeHoverZoneLeft { pointer-events: none !important; }
  #rootContainer.leftDockPinned .flyoutHostLeft,
  #rootContainer.leftDockPeek .flyoutHostLeft { width: 100vw; }
  .leftDock {
    width: var(--leftDockWidth);
    transform: translateX(-100%);
    border-right-color: rgba(255, 255, 255, 0.12);
    box-shadow: 16px 0 42px rgba(0, 0, 0, 0.42);
  }
  #rootContainer.leftDockPinned .leftDock { transform: translateX(-100%); }
  #rootContainer.leftDockPeek .leftDock { transform: translateX(0); }
  /* The drawer opens only after the menu-button click completes. Keep it non-interactive for a
     brief guard window as a second line of defence against delayed synthetic touch clicks. */
  #rootContainer.mobileDockInteractionGuard .leftDock { pointer-events: none; }
  #rootContainer.leftDockPeek .mobileDockBackdrop {
    display: block; position: absolute; inset: 0; left: var(--leftDockWidth);
    padding: 0; border: 0; border-radius: 0; background: rgba(0, 0, 0, 0.4);
    pointer-events: auto; cursor: pointer; touch-action: manipulation;
  }
  .sidebarHistoryEmptyFull { display: none; }
  .sidebarHistoryEmptyCompact { display: inline; }
  .sidebarHeaderRow { padding: calc(14px + env(safe-area-inset-top, 0px)) 14px 10px; }
  .sidebarBody { padding-bottom: 14px; }
  .sidebarNavBtn { min-height: 44px; }
  .historyItem { min-height: 44px; }
  .historyItemMenuBtn { opacity: 1; }
  .resourceList { max-height: 220px; }

  .chatHero {
    align-items: flex-start;
    padding: calc(72px + env(safe-area-inset-top, 0px)) 16px 18px;
  }
  .chatHeroInner { gap: 10px; }
  .chatHeroLogo { width: 44px; height: 44px; border-radius: 12px; }
  .chatHeroTitle { font-size: 23px; line-height: 1.25; }
  .chatHeroSubtitle { font-size: 14px; line-height: 1.45; }
  .chatHeroSuggestions { width: 100%; justify-content: stretch; }
  .chatSuggestionChip {
    flex: 1 1 100%;
    min-height: 40px;
    border-radius: 12px;
    padding: 9px 12px;
    text-align: left;
  }

  .chatMessages { padding-top: calc(54px + env(safe-area-inset-top, 0px)); }
  .chatMessage {
    max-width: none;
    gap: 10px;
    padding: 14px 12px;
  }
  .chatMessageAvatar { width: 28px; height: 28px; }
  .chatMessageUser .chatMessageBody { max-width: min(82vw, 520px); }
  .chatMessageUser .chatMessageText,
  .chatMessageAssistant .chatMessageText {
    font-size: 14px;
    line-height: 1.55;
  }
  .sceneCardCanvasWrap {
    aspect-ratio: 4 / 3;
    max-height: min(58vh, 360px);
    border-radius: 12px 12px 0 0;
  }
  .sceneCardActionBar {
    overflow-x: auto;
    scrollbar-width: none;
  }
  .sceneCardActionBar::-webkit-scrollbar { display: none; }
  .sceneCardActionBtn {
    width: 34px;
    height: 34px;
    border-radius: 9px;
  }
  .jsonCollapse pre { max-height: 280px; }

  .chatComposerBar {
    padding: 0 10px calc(10px + env(safe-area-inset-bottom, 0px));
  }
  .chatComposer {
    max-width: none;
    border-radius: 20px;
  }
  .composerInputRow {
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 7px;
    padding: 8px;
  }
  .composerIconBtn,
  .composerSendBtn {
    width: 38px;
    height: 38px;
  }
  .composerInput {
    flex-basis: calc(100% - 45px);
    min-height: 38px;
    max-height: 132px;
    font-size: 15px;
  }
  .composerActions {
    width: 100%;
    justify-content: space-between;
    padding: 0 0 1px 45px;
  }
  .composerModelSelect {
    max-width: calc(100vw - 118px);
    min-width: 0;
    flex: 1;
  }
  .composerHint { display: none; }

  .scrollToBottomBtn { bottom: 116px; }

  .modalOverlay {
    align-items: stretch;
    justify-content: stretch;
    padding: max(10px, env(safe-area-inset-top, 0px)) 10px max(10px, env(safe-area-inset-bottom, 0px));
  }
  .modalDialog {
    width: 100%;
    max-height: none;
    border-radius: 12px;
  }
  .settingsDialog {
    height: auto;
    min-height: 0;
  }
  .settingsBody {
    flex-direction: column;
    min-height: 0;
  }
  .settingsNav {
    flex: 0 0 auto;
    flex-direction: row;
    gap: 6px;
    padding: 8px 10px;
    border-right: none;
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
  }
  .settingsNavBtn {
    flex: 0 0 auto;
    width: auto;
    min-height: 34px;
    white-space: nowrap;
  }
  .settingsScroll {
    padding: 14px;
    gap: 14px;
  }
  .settingsField {
    grid-template-columns: minmax(0, 1fr);
    align-items: stretch;
    gap: 7px;
  }
  .settingsField .settingsFieldControl,
  .settingsField .settingsFieldHint { grid-column: 1; }
  .settingsField:has(input[type="checkbox"]) {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
  .settingsField:has(input[type="checkbox"]) .settingsFieldControl { grid-column: 2; }
  .settingsFieldControl,
  .settingsFieldControl select,
  .settingsFieldControl input[type="text"],
  .settingsFieldControl input[type="number"],
  .settingsFieldControl input[type="password"] {
    width: 100%;
    min-width: 0;
  }
  .providerCard { padding: 10px; }
  .providerCardRow {
    align-items: stretch;
    flex-direction: column;
    gap: 5px;
  }
  .providerCardRow label { flex: 0 0 auto; }
  .providerSecretControl { width: 100%; }
  .modalFooter {
    padding: 10px 14px 14px;
  }
  .modalFooter button {
    flex: 1;
    min-height: 38px;
  }
}
.aiOutputRouteNotice {
  margin: 4px 0 10px;
  font-size: 13px;
  line-height: 1.6;
  overflow-wrap: anywhere;
  opacity: 0.85;
}