/* Cascade Studio — Modern Dark Theme */

:root {
  /* Base palette — matches master's neutral dark theme */
  --cs-bg-primary: #222;
  --cs-bg-secondary: #111;
  --cs-bg-surface: #2e2e2e;
  --cs-bg-elevated: #404040;

  /* Text */
  --cs-text-primary: #f2f2f2;
  --cs-text-secondary: #aeb5b8;
  --cs-text-muted: #777;

  /* Accent */
  --cs-accent: #4CAF50;
  --cs-accent-hover: #66BB6A;
  --cs-accent-dim: #388E3C;

  /* Borders & separators */
  --cs-border: #333;
  --cs-border-active: #4CAF50;

  /* Scrollbar */
  --cs-scrollbar-track: var(--cs-bg-secondary);
  --cs-scrollbar-thumb: #777;

  /* Radius */
  --cs-radius: 4px;

  /* Transition */
  --cs-transition: 150ms ease;

  /* Fonts */
  --cs-font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --cs-font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
}

/* Visually hidden but accessible — stays in Playwright's accessibility snapshot.
   Uses offscreen positioning instead of clip (clip: rect(0,0,0,0) causes
   Playwright to strip the text from the accessibility tree entirely). */
.sr-only {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--cs-bg-primary);
  color: var(--cs-text-primary);
  font-family: var(--cs-font-ui);
  overflow: hidden;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--cs-scrollbar-track);
}
::-webkit-scrollbar-thumb {
  background: var(--cs-scrollbar-thumb);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--cs-scrollbar-thumb), white 25%);
}

/* ============================================================
   Top Navigation Bar
   ============================================================ */

.topnav {
  background: var(--cs-bg-secondary);
  display: flex;
  align-items: center;
  padding: 0;
  height: 36px;
  /* no overflow clipping — the File dropdown hangs below the bar */
}

.topnav-brand {
  color: var(--cs-text-primary) !important;
  font-size: 14px;
  font-family: Consolas, monospace;
  padding: 4px 16px;
  text-decoration: none;
  white-space: nowrap;
}

.topnav-brand:hover {
  background: #aaa !important;
  color: black !important;
}

.topnav-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.topnav a, .topnav label {
  color: var(--cs-text-primary);
  text-decoration: none;
  font-size: 14px;
  font-family: Consolas, monospace;
  padding: 4px 16px;
  cursor: pointer;
  white-space: nowrap;
}

.topnav a:hover, .topnav label:hover {
  background: #aaa;
  color: black;
}

.topnav a:active, .topnav label:active {
  background: var(--cs-accent);
  color: white;
}

.topnav-separator {
  width: 1px;
  height: 16px;
  background: var(--cs-border);
  margin: 0 4px;
}

.topnav-select {
  background: var(--cs-bg-surface);
  color: var(--cs-text-secondary);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  padding: 3px 8px;
  font-size: 11px;
  font-family: var(--cs-font-ui);
  margin-left: 8px;
  cursor: pointer;
  transition: border-color var(--cs-transition);
}

.topnav-select:hover {
  border-color: var(--cs-accent);
}

.topnav-select:focus {
  outline: none;
  border-color: var(--cs-accent);
  box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.15);
}

.topnav-import {
  cursor: pointer;
}

/* --- File dropdown menu (native <details>) --- */
.topnav-menu {
  position: relative;
}

.topnav-menu > summary {
  list-style: none; /* hide the disclosure triangle */
  color: var(--cs-text-primary);
  font-size: 14px;
  font-family: Consolas, monospace;
  padding: 4px 16px;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
}

.topnav-menu > summary::-webkit-details-marker {
  display: none;
}

.topnav-menu > summary:hover {
  background: #aaa;
  color: black;
}

.topnav-menu[open] > summary {
  background: var(--cs-accent);
  color: white;
}

.topnav-menu-items {
  position: absolute;
  left: 0;
  top: 100%;
  z-index: 1000;
  min-width: 200px;
  background: var(--cs-bg-surface);
  border: 1px solid var(--cs-border);
  border-radius: var(--cs-radius);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  padding: 4px;
  display: flex;
  flex-direction: column;
}

.topnav-menu-items a,
.topnav-menu-items label {
  display: block;
  padding: 6px 12px;
  border-radius: 3px;
  font-size: 13px;
  font-family: var(--cs-font-ui);
}

.topnav-menu-sep {
  height: 1px;
  background: var(--cs-border);
  margin: 4px 8px;
}

/* --- LLM Integration menu (topnav "LLM ▾") --- */
.llm-menu-items {
  min-width: 280px;
}

.llm-menu-status {
  padding: 6px 12px;
  font-size: 12px;
  font-family: var(--cs-font-mono);
  color: var(--cs-text-secondary);
  white-space: nowrap;
}

.llm-menu-status.llm-connected {
  color: var(--cs-accent);
}

.llm-menu-notice {
  padding: 2px 12px 6px;
  font-size: 11px;
  font-family: var(--cs-font-ui);
  white-space: normal;
  max-width: 300px;
}

.llm-notice-ok { color: var(--cs-accent); }
.llm-notice-err { color: #e57373; }

.llm-key-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 4px 12px 8px;
}

.llm-key-form input {
  background: var(--cs-bg-elevated);
  color: var(--cs-text-primary);
  border: 1px solid var(--cs-border);
  border-radius: 3px;
  padding: 5px 8px;
  font-size: 12px;
  font-family: var(--cs-font-mono);
  width: 100%;
}

.llm-key-form input:focus {
  outline: none;
  border-color: var(--cs-accent);
}

.llm-key-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.llm-key-form button {
  background: var(--cs-accent-dim);
  color: white;
  border: none;
  border-radius: 3px;
  padding: 4px 14px;
  font-size: 12px;
  font-family: var(--cs-font-ui);
  cursor: pointer;
}

.llm-key-form button:hover:not(:disabled) {
  background: var(--cs-accent);
}

.llm-key-form button:disabled {
  opacity: 0.6;
  cursor: default;
}

.llm-key-row a {
  font-size: 11px;
  padding: 2px 4px;
}

.llm-key-msg {
  font-size: 11px;
  font-family: var(--cs-font-ui);
  color: var(--cs-text-secondary);
}

.llm-menu-privacy {
  padding: 4px 12px 6px;
  font-size: 11px;
  line-height: 1.45;
  font-family: var(--cs-font-ui);
  color: var(--cs-text-muted);
  white-space: normal;
  max-width: 300px;
}

/* ============================================================
   AI assistant chat strip (bottom of the code editor panel)
   ============================================================ */

.llm-chat {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  background: var(--cs-bg-secondary);
  border-top: 1px solid var(--cs-border);
}

.llm-chat-header {
  display: flex;
  align-items: center;
  gap: 6px;
  height: 26px;
  padding: 0 8px;
  cursor: pointer;
  user-select: none;
}

.llm-chat-caret {
  background: none;
  border: none;
  color: var(--cs-text-secondary);
  font-size: 12px;
  padding: 2px 4px;
  cursor: pointer;
  border-radius: 3px;
}

.llm-chat-caret:hover {
  background: var(--cs-bg-elevated);
  color: var(--cs-text-primary);
}

.llm-chat-label {
  font-size: 12px;
  font-family: var(--cs-font-ui);
  color: var(--cs-text-primary);
  white-space: nowrap;
}

.llm-chat-status {
  flex: 1 1 auto;
  font-size: 11px;
  font-family: var(--cs-font-ui);
  color: var(--cs-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.llm-chat-model {
  max-width: 180px;
  font-size: 11px;
}

.llm-chat-body {
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}

.llm-chat-hint {
  padding: 6px 10px 10px;
  font-size: 12px;
  font-family: var(--cs-font-ui);
  color: var(--cs-text-secondary);
}

.llm-chat-hint a {
  color: var(--cs-accent);
}

.llm-chat-log {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 2px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.llm-chat-msg {
  font-size: 12px;
  font-family: var(--cs-font-ui);
  line-height: 1.4;
  white-space: pre-wrap;
  word-break: break-word;
  padding: 4px 8px;
  border-radius: 4px;
  max-width: 92%;
}

.llm-msg-user {
  align-self: flex-end;
  background: var(--cs-bg-elevated);
  color: var(--cs-text-primary);
}

.llm-msg-assistant {
  align-self: flex-start;
  background: var(--cs-bg-surface);
  color: var(--cs-text-primary);
}

.llm-msg-activity {
  align-self: flex-start;
  color: var(--cs-text-muted);
  font-size: 11px;
  padding: 0 8px;
}

.llm-msg-error {
  align-self: flex-start;
  color: #e57373;
  font-size: 11px;
  padding: 2px 8px;
}

.llm-chat-input-row {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  padding: 6px 8px 8px;
}

.llm-chat-input {
  flex: 1 1 auto;
  resize: none;
  background: var(--cs-bg-surface);
  color: var(--cs-text-primary);
  border: 1px solid var(--cs-border);
  border-radius: 4px;
  padding: 5px 8px;
  font-size: 12px;
  font-family: var(--cs-font-ui);
  line-height: 1.4;
  min-height: 28px;
  max-height: 90px;
}

.llm-chat-input:focus {
  outline: none;
  border-color: var(--cs-accent);
}

.llm-chat-input:disabled {
  opacity: 0.6;
}

.llm-chat-send {
  background: var(--cs-accent-dim);
  color: white;
  border: none;
  border-radius: 4px;
  height: 28px;
  padding: 0 14px;
  font-size: 12px;
  font-family: var(--cs-font-ui);
  cursor: pointer;
  white-space: nowrap;
}

.llm-chat-send:hover {
  background: var(--cs-accent);
}

.llm-chat-send.llm-chat-stop {
  background: #b05555;
}

.llm-chat-send.llm-chat-stop:hover {
  background: #c96a6a;
}

/* Image attachments: ⊕ button, pending-chip row, transcript thumbnails */

.llm-chat-attach-btn {
  background: var(--cs-bg-surface);
  color: var(--cs-text-primary);
  border: 1px solid var(--cs-border);
  border-radius: 4px;
  /* Same 28px as the input's min-height and the Send button — the row
     aligns flex-end, so a shorter button reads as sunken */
  width: 28px;
  height: 28px;
  padding: 0;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex: 0 0 auto;
}

/* The icon: a camera-lens mark (square outline + centered dot) drawn in
   CSS so it centers exactly — font glyphs sit off-center in the em box */
.llm-chat-attach-btn::before {
  content: '';
  display: block;
  width: 12px;
  height: 12px;
  border: 1.5px solid currentColor;
  border-radius: 2.5px;
}

.llm-chat-attach-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 4px;
  height: 4px;
  margin: -2px 0 0 -2px;
  border-radius: 50%;
  background: currentColor;
}

.llm-chat-attach-btn:hover:not(:disabled) {
  border-color: var(--cs-accent);
  color: var(--cs-accent);
}

.llm-chat-attach-btn:disabled {
  opacity: 0.5;
  cursor: default;
}

.llm-chat-attach-row {
  display: none;
  flex-wrap: wrap;
  gap: 8px;
  padding: 4px 8px 0;
}

.llm-chat-attach-chip {
  position: relative;
}

.llm-chat-attach-chip img {
  display: block;
  height: 44px;
  max-width: 90px;
  object-fit: cover;
  border: 1px solid var(--cs-border);
  border-radius: 4px;
}

.llm-chat-attach-chip button {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 16px;
  height: 16px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--cs-bg-elevated);
  color: var(--cs-text-primary);
  font-size: 10px;
  line-height: 16px;
  cursor: pointer;
}

.llm-chat-attach-chip button:hover {
  background: #b05555;
  color: white;
}

.llm-chat-msg-img {
  display: block;
  max-height: 80px;
  max-width: 100%;
  border-radius: 4px;
  margin-top: 4px;
}

.llm-chat-body.llm-drop-hover {
  outline: 1px dashed var(--cs-accent);
  outline-offset: -2px;
}

/* ============================================================
   Editor panel status bar (bottom strip: language mode select)
   ============================================================ */

.cs-editor-statusbar {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 28px;
  padding: 0 8px;
  background: var(--cs-bg-secondary);
  border-top: 1px solid var(--cs-border);
}

.cs-editor-statusbar .topnav-select {
  margin-left: 0;
}

/* ============================================================
   App Body (Dockview container)
   ============================================================ */

#appbody {
  width: 100%;
  overflow: hidden;
  background: var(--cs-bg-primary);
}

/* ============================================================
   Dockview Theme Overrides
   ============================================================ */

.dockview-theme-dark {
  --dv-background-color: var(--cs-bg-primary);
  --dv-paneview-header-border-color: var(--cs-border);
  --dv-tabs-and-actions-container-background-color: transparent;
  --dv-tabs-and-actions-container-height: 20px;
  --dv-tabs-and-actions-container-font-size: 11px;
  --dv-activegroup-visiblepanel-tab-background-color: var(--cs-bg-primary);
  --dv-activegroup-hiddenpanel-tab-background-color: color-mix(in srgb, var(--cs-bg-primary), black 25%);
  --dv-inactivegroup-visiblepanel-tab-background-color: var(--cs-bg-primary);
  --dv-inactivegroup-hiddenpanel-tab-background-color: color-mix(in srgb, var(--cs-bg-primary), black 25%);
  --dv-tab-divider-color: var(--cs-border);
  --dv-activegroup-visiblepanel-tab-color: var(--cs-text-secondary);
  --dv-activegroup-hiddenpanel-tab-color: var(--cs-text-muted);
  --dv-inactivegroup-visiblepanel-tab-color: var(--cs-text-secondary);
  --dv-inactivegroup-hiddenpanel-tab-color: var(--cs-text-muted);
  --dv-separator-border: var(--cs-border);
  --dv-group-view-background-color: var(--cs-bg-primary);
}

/* ============================================================
   Centered overlay
   ============================================================ */

.centered {
  position: fixed;
  top: 10%;
  left: 25%;
  z-index: 1000;
  width: 50%;
  height: 80%;
  background: var(--cs-bg-primary);
  color: var(--cs-text-primary);
  border: 1px solid var(--cs-border);
  border-radius: 8px;
  overflow: auto;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

/* ============================================================
   TweakPane (GUI Panel) Theme
   ============================================================ */

:root {
  --tp-font-family: Arial, sans-serif;
  --tp-base-background-color: var(--cs-bg-surface);
  --tp-button-background-color: var(--cs-bg-elevated);
  --tp-button-background-color-active: color-mix(in srgb, var(--cs-bg-elevated), white 15%);
  --tp-button-background-color-focus: color-mix(in srgb, var(--cs-bg-elevated), white 10%);
  --tp-button-background-color-hover: color-mix(in srgb, var(--cs-bg-elevated), white 5%);
  --tp-button-foreground-color: var(--cs-text-primary);
  --tp-label-foreground-color: var(--cs-text-secondary);
}

.gui-panel {
  position: absolute;
  top: 36px; /* below the viewport command bar */
  right: 0;
  max-height: calc(100% - 36px);
  overflow-y: auto;
  z-index: 10;
}

.gui-panel::-webkit-scrollbar {
  width: 8px;
  background: var(--cs-bg-surface);
}

.gui-panel::-webkit-scrollbar-thumb {
  background: var(--cs-scrollbar-thumb);
  border-radius: 4px;
}

.tp-rotv {
  text-shadow: 1px 1px #000;
  border-radius: var(--cs-radius);
}

.tp-rotv button {
  text-shadow: inherit;
}

/* ============================================================
   Console Panel Styling
   ============================================================ */

/* Enhance console output readability — exclude Monaco editor internals */
#appbody .dv-content-container div[style*="monospace"]:not(.monaco-editor *) {
  padding: 2px 8px;
  font-family: var(--cs-font-mono);
}

/* ============================================================
   Modeling History Timeline
   ============================================================ */

.cs-timeline {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  pointer-events: auto;
  max-width: calc(100% - 32px);
}

.cs-timeline-track {
  display: flex;
  align-items: center;
  gap: 2px;
  background: rgba(34, 34, 34, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--cs-border);
  border-radius: 16px;
  padding: 4px 8px;
  cursor: pointer;
  user-select: none;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.cs-timeline-track::-webkit-scrollbar {
  display: none;
}

.cs-timeline-step {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: var(--cs-text-muted);
  background: transparent;
  transition: color var(--cs-transition), background var(--cs-transition),
              transform var(--cs-transition);
  flex-shrink: 0;
}

.cs-timeline-step:hover {
  color: var(--cs-text-primary);
  background: var(--cs-bg-elevated);
  transform: scale(1.15);
}

.cs-timeline-step.cs-timeline-active {
  color: var(--cs-accent);
  background: var(--cs-bg-elevated);
  box-shadow: 0 0 6px rgba(76, 175, 80, 0.3);
}

.cs-timeline-step.cs-timeline-final {
  color: var(--cs-text-secondary);
}

/* Editor line highlight when scrubbing timeline */
.cs-history-line-highlight {
  background: rgba(76, 175, 80, 0.12);
  border-left: 2px solid var(--cs-accent);
}

.cs-history-glyph {
  background: var(--cs-accent);
  width: 4px !important;
  margin-left: 3px;
  border-radius: 2px;
}

/* ============================================================
   Mobile Responsive Overrides
   ============================================================ */

@media (orientation: portrait) {
  .dv-tabs-and-actions-container {
    display: none !important;
  }
  .gui-panel {
    max-width: 70%;
    font-size: 11px;
  }
  .cs-timeline-step {
    width: 20px;
    height: 20px;
    font-size: 10px;
  }
  /* Remove outer padding around Monaco editor */
  .monaco-editor,
  .monaco-editor .overflow-guard,
  .monaco-editor .margin {
    padding: 0 !important;
  }
}

/* ============================================================
   Viewport settings popover (bottom-right of the 3D view)
   ============================================================ */

.cs-vpset {
  position: absolute;
  bottom: 8px;
  right: 8px;
  z-index: 21;
}

.cs-vpset-btn {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  line-height: 1;
  color: var(--cs-text-secondary);
  background: rgba(34, 34, 34, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--cs-border);
  border-radius: 50%;
  cursor: pointer;
  user-select: none;
  transition: color var(--cs-transition), border-color var(--cs-transition);
}

.cs-vpset-btn:hover {
  color: var(--cs-text-primary);
  border-color: var(--cs-border-active);
}

.cs-vpset-popover {
  position: absolute;
  bottom: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  padding: 8px 10px;
  background: rgba(34, 34, 34, 0.92);
  backdrop-filter: blur(8px);
  border: 1px solid var(--cs-border);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.cs-vpset-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--cs-text-muted);
  margin-bottom: 6px;
}

.cs-vpset-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 12px;
  color: var(--cs-text-primary);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.cs-vpset-row:hover {
  color: var(--cs-accent-hover);
}

.cs-vpset-row input[type="checkbox"] {
  accent-color: var(--cs-accent);
  cursor: pointer;
  margin: 0;
}

.cs-vpset-select {
  margin-left: auto;
  background: var(--cs-bg-surface);
  color: var(--cs-text-primary);
  border: 1px solid var(--cs-border);
  border-radius: 4px;
  padding: 2px 4px;
  font-size: 12px;
  font-family: var(--cs-font-ui);
  cursor: pointer;
}

.cs-vpset-select:hover,
.cs-vpset-select:focus {
  outline: none;
  border-color: var(--cs-accent);
}

/* Highlight for GUI controls defined on the line under the editor cursor */
.cs-gui-hot {
  outline: 1px solid var(--cs-accent);
  outline-offset: 1px;
  border-radius: var(--cs-radius);
  box-shadow: 0 0 8px rgba(76, 175, 80, 0.35);
}

/* Lineage highlight: every code line that contributed to the clicked shape */
.cs-lineage-line {
  background: rgba(76, 175, 80, 0.10);
}
.cs-lineage-gutter {
  background: var(--cs-accent);
  width: 3px !important;
  margin-left: 2px;
}

/* --- Command bar at the top of the CAD viewport (SolidWorks-style):
       feature buttons normally, sketch tools while sketching --- */
.cs-featbar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  flex-direction: column;
  background: rgba(17, 17, 17, 0.82);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--cs-border);
  padding: 3px 8px;
}
.cs-featbar-row {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: wrap;
}
.cs-featbar-hint {
  color: var(--cs-text-muted);
  font-size: 11px;
  padding: 2px 4px 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sketch-ribbon-plane {
  color: var(--cs-accent);
  font-family: var(--cs-font-mono);
  font-size: 12px;
  padding: 0 10px 0 4px;
  white-space: nowrap;
}
.sketch-tool-btn {
  background: none;
  border: 1px solid transparent;
  border-radius: var(--cs-radius);
  color: var(--cs-text-primary);
  font-size: 13px;
  font-family: var(--cs-font-ui);
  padding: 4px 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--cs-transition), border-color var(--cs-transition), color var(--cs-transition);
}
.sketch-tool-btn:hover {
  background: var(--cs-bg-elevated);
}
.sketch-tool-btn.active {
  border-color: var(--cs-accent);
  color: var(--cs-accent);
}
.sketch-save-btn {
  background: var(--cs-accent-dim);
  border-color: var(--cs-accent);
  color: #fff;
  font-weight: 600;
}
.sketch-save-btn:hover {
  background: var(--cs-accent);
}
.sketch-ribbon-sep {
  width: 1px;
  height: 16px;
  background: var(--cs-border);
  margin: 0 6px;
  flex-shrink: 0;
}
/* --- Sketch mode: dimension input box --- */
.cs-dim-box {
  position: absolute;
  z-index: 30;
  display: flex;
  align-items: center;
  background: var(--cs-bg-elevated);
  border: 1px solid var(--cs-accent);
  border-radius: var(--cs-radius);
  padding: 3px 4px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}
.cs-dim-box .cs-dim-kind {
  color: var(--cs-text-muted);
  font-family: var(--cs-font-mono);
  font-size: 11px;
  padding: 0 5px;
}
.cs-dim-box .cs-dim-mode {
  background: var(--cs-bg-primary);
  color: var(--cs-text-muted);
  border: 1px solid var(--cs-border);
  border-radius: 2px;
  font-family: var(--cs-font-mono);
  font-size: 11px;
  padding: 2px 6px;
  margin-right: 4px;
  cursor: pointer;
  white-space: nowrap;
}
.cs-dim-box .cs-dim-mode:hover {
  color: var(--cs-text-primary);
  border-color: var(--cs-accent);
}
.cs-dim-box input {
  background: var(--cs-bg-primary);
  color: var(--cs-text-primary);
  border: none;
  outline: none;
  font-family: var(--cs-font-mono);
  font-size: 13px;
  width: 110px;
  padding: 3px 6px;
  border-radius: 2px;
}
.cs-dim-box input.cs-dim-bad {
  color: #ff7043;
}
/* --- Sketch mode: floating feedback (drifts up from the cursor and fades,
       RCT-style) --- */
.cs-float-msg {
  position: absolute;
  z-index: 40;
  pointer-events: none;
  font-family: var(--cs-font-mono);
  font-size: 12px;
  white-space: nowrap;
  padding: 3px 9px;
  border-radius: var(--cs-radius);
  background: rgba(17, 17, 17, 0.85);
  animation: cs-float-up 3s ease-out forwards;
}
.cs-float-msg.bad {
  color: #ff5252;
  border: 1px solid rgba(255, 82, 82, 0.4);
}
.cs-float-msg.info {
  color: var(--cs-accent);
  border: 1px solid rgba(76, 175, 80, 0.35);
}
@keyframes cs-float-up {
  0%   { opacity: 0; transform: translate(-50%, -100%) translateY(6px); }
  8%   { opacity: 1; transform: translate(-50%, -100%) translateY(0); }
  72%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%, -100%) translateY(-48px); }
}

/* Edge carets that reopen closed dockview panels (CascadeMain._setupReopenTabs) */
.cs-reopen-tab {
  position: absolute;
  z-index: 40;
  background: var(--cs-bg-elevated);
  color: var(--cs-text-secondary);
  border: 1px solid var(--cs-border);
  font-family: var(--cs-font-ui);
  font-size: 12px;
  line-height: 1;
  padding: 0;
  cursor: pointer;
  transition: color var(--cs-transition), border-color var(--cs-transition);
}
.cs-reopen-tab:hover {
  color: var(--cs-accent);
  border-color: var(--cs-border-active);
}
.cs-reopen-left {
  left: 0; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 56px;
  border-left: none;
  border-radius: 0 var(--cs-radius) var(--cs-radius) 0;
}
.cs-reopen-right {
  right: 0; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 56px;
  border-right: none;
  border-radius: var(--cs-radius) 0 0 var(--cs-radius);
}
.cs-reopen-bottom {
  bottom: 0; left: 24px; /* left is re-anchored by _setupReopenTabs */
  height: 16px; width: 56px;
  border-bottom: none;
  border-radius: var(--cs-radius) var(--cs-radius) 0 0;
}