/* IN-CAD brand palette — pulled from https://downloads.in-cad.eu (`:root` tokens):
   electric blue #010ED0 (primary), navy #0A0D31 (headings), charcoal #242627
   (hover), light #F5F5F5 (surfaces), muted #5F6567, soft blue tint #DEE0FF.
   Headings: 'Inter Tight'; body: Helvetica. The 3D viewport stays deep navy
   so models read well against the chrome. */
:root {
  --accent: #010ED0;
  --accent-2: #242627;
  --accent-soft: #DEE0FF;
  --ink: #0A0D31;
  --text: #242627;
  --muted: #5F6567;
  --bg: #F5F5F5;
  --panel: #FFFFFF;
  --panel-2: #F5F5F5;
  --border: #00000026;
  --border-strong: #00000040;
  --code-bg: #F5F5F5;
  --ok: #1a8f3c;
  --err: #d12d2d;
  --warn: #b67c00;
  --radius: 4px;
  --tb-h: 34px;
  --head-font: 'Inter Tight', Helvetica, Arial, system-ui, sans-serif;
  --body-font: Helvetica, Arial, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}
* { box-sizing: border-box; }
html {
  height: 100%;
}
body {
  margin: 0;
  font: 14px/1.5 var(--body-font);
  background: var(--bg);
  color: var(--text);
  height: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}
header {
  position: relative;
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto auto;
  align-items: center;
  padding: 22px 28px;
  border-bottom: 3px solid var(--accent);
  color: #fff;
  /* Subtle branding: the network texture is faded out toward the left so the
     title sits on clean navy, and only a hint of the nodes shows through
     on the right edge as an accent — not a full banner. Navy flat fallback. */
  background:
    linear-gradient(90deg,
      var(--ink) 0%,
      rgba(10,13,49,.97) 40%,
      rgba(10,13,49,.72) 75%,
      rgba(1,14,208,.5) 100%),
    url(assets/header-bg.png) right center / cover no-repeat,
    var(--ink);
}
header .brand-title {
  grid-column: 1;
  grid-row: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--head-font);
}
header .brand-sub { font-size: 30px; font-weight: 700; color: #fff; letter-spacing: -.02em; }
header .sub {
  grid-column: 1;
  grid-row: 2;
  color: rgba(255,255,255,.72);
  font-size: 13px;
  margin-top: 6px;
}
header .sub code { color: var(--accent-soft); }
header .pill { margin-left: 4px; }

/* ---------------- App shell: projects sidebar + workspace ---------------- */
.app-shell {
  display: flex;
  align-items: stretch;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
}
.projects-panel {
  width: 280px;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-self: stretch;
  min-height: 0;
  background: var(--panel);
  border-right: 1px solid var(--border);
  transition: width .2s ease;
  overflow: hidden;
}
.app-shell.collapsed .projects-panel {
  width: 52px;
}
.projects-panel-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}
.projects-title {
  flex: 1;
  font-family: var(--head-font);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  text-transform: uppercase;
  letter-spacing: .04em;
  white-space: nowrap;
  overflow: hidden;
}
.app-shell.collapsed .projects-title,
.app-shell.collapsed .projects-add {
  display: none;
}
.projects-toggle,
.projects-add {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: var(--radius);
  width: 30px;
  height: 30px;
  padding: 0;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  flex: 0 0 auto;
}
.projects-toggle:hover,
.projects-add:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.projects-add {
  font-size: 18px;
  font-weight: 600;
}
.projects-panel-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: 8px 6px 12px;
}
.account-panel {
  flex: 0 0 auto;
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 8px 6px 10px;
  background: var(--panel);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.account-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font: 13px/1.3 var(--body-font);
  text-align: left;
  cursor: pointer;
}
.account-row:hover {
  background: var(--panel-2);
  color: var(--accent);
}
.account-user {
  cursor: default;
}
.account-user:hover {
  background: transparent;
  color: var(--text);
}
.account-avatar,
.account-icon {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
}
.account-avatar {
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--ink);
}
.account-meta {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.account-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted);
}
.account-email {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.account-row-text {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.account-logout {
  color: var(--muted);
}
.app-shell.collapsed .account-meta,
.app-shell.collapsed .account-row-text,
.app-shell.collapsed .account-label {
  display: none;
}
.app-shell.collapsed .account-row {
  justify-content: center;
  padding: 8px 0;
  gap: 0;
}
.app-shell.collapsed .account-avatar,
.app-shell.collapsed .account-icon {
  width: 30px;
  height: 30px;
}
.projects-collapsed-hint {
  text-align: center;
  padding: 16px 0;
  font-size: 20px;
  opacity: .55;
  cursor: default;
}
.project-folder {
  margin-bottom: 4px;
}
.project-row {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font: 13px/1.3 var(--body-font);
  text-align: left;
  cursor: pointer;
}
.project-row:hover { background: var(--panel-2); }
.project-folder.active .project-row {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.folder-icon {
  width: 14px;
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 11px;
}
.project-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.project-count {
  flex: 0 0 auto;
  font-size: 11px;
  color: var(--muted);
  background: var(--panel-2);
  border-radius: 999px;
  padding: 1px 7px;
}
.project-models {
  margin: 2px 0 6px 18px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.project-model {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 6px 8px;
  border: 0;
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font: 12px/1.3 var(--body-font);
  text-align: left;
  cursor: pointer;
}
.project-model:hover { background: var(--panel-2); }
.project-model.selected {
  background: rgba(1,14,208,.1);
  color: var(--accent);
  font-weight: 600;
}
.model-icon {
  flex: 0 0 auto;
  font-size: 8px;
  color: var(--muted);
}
.project-model.selected .model-icon { color: var(--accent); }
.model-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.model-meta {
  flex: 0 0 auto;
  font-size: 10px;
  color: var(--muted);
}
.projects-empty {
  padding: 6px 8px;
  font-size: 11px;
  color: var(--muted);
  line-height: 1.4;
}
.project-add-model {
  margin-top: 4px;
  align-self: flex-start;
  background: transparent;
  border: 1px dashed var(--border-strong);
  color: var(--muted);
  border-radius: var(--radius);
  padding: 5px 10px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--body-font);
  cursor: pointer;
}
.project-add-model:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.workspace {
  flex: 1;
  min-width: 0;
  min-height: 0;
  overflow: auto;
}
.workspace main { max-width: none; margin: 0; padding: 20px 24px; }
@media (max-width: 880px) { .workspace main { padding: 16px; } }
@media (max-width: 900px) {
  .projects-panel { width: 240px; }
  .app-shell.collapsed .projects-panel { width: 52px; }
}

/* Legacy 2-column grid kept for reference; the upload + preview now stack
   full-width below the selector bar so the 3D area dominates. */
.grid { display: grid; gap: 20px; grid-template-columns: 1fr 1fr; }
@media (max-width: 880px) { .grid { grid-template-columns: 1fr; } }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 1px 2px rgba(10,13,49,.04);
}
.card h2 {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--head-font);
  color: var(--ink);
  letter-spacing: -.01em;
}
.hint { color: var(--muted); font-size: 12px; margin-top: 10px; }
.pill { color: var(--muted); font-size: 12px; }
.pill.beta {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
}

/* ---------------- Topbar (content switcher + inline 3D controls) ---------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: nowrap;
  padding: 10px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 2px rgba(10,13,49,.04);
  margin-bottom: 8px;
}
#contentMenu {
  flex: 0 0 auto;
  gap: 10px;
}
.tb-interact-sep,
.tb-interact {
  display: none;
}
#contentMenu.is-model .tb-interact-sep {
  display: block;
}
#contentMenu.is-model .tb-interact {
  display: inline-flex;
}
.tb-interact {
  align-items: center;
  gap: 8px;
}
.tb-group {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
}
.tb-group.tb-file {
  flex: 0 1 auto;
  min-width: 0;
}
/* 2D/3D switcher hidden while sheet-view UX is under discussion; 3D stays default (app.js). */
#modeSeg { display: none; }
.tb-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  margin-left: auto;
  flex-wrap: nowrap;
  align-self: auto;
}
.tb-sep {
  width: 1px;
  align-self: stretch;
  flex: 0 0 auto;
  background: var(--border);
  margin: 2px 2px;
}

/* File open button (replaces the dashed drop zone) */
.drop-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  height: var(--tb-h);
  box-sizing: border-box;
  background: var(--panel-2);
  border: 1px dashed var(--border-strong);
  color: var(--text);
  border-radius: var(--radius);
  padding: 0 12px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--body-font);
  cursor: pointer;
  transition: border-color .15s, background .15s, color .15s;
  flex: 0 0 auto;
}
.drop-btn:hover { border-color: var(--accent); color: var(--accent); background: var(--panel); }
.drop-btn.drag { border-color: var(--accent); background: rgba(1,14,208,.08); color: var(--accent); }
.drop-btn .icon { font-size: 14px; line-height: 1; }
.drop-btn .ext { color: var(--accent); font-weight: 700; }
#fileInput { display: none; }
.file-label {
  color: var(--muted);
  font-size: 13px;
  min-width: 0;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 0 1 auto;
}

/* Normalize topbar control heights */
.topbar button:not(.link-btn):not(.seg-btn):not(.drop-btn) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--tb-h);
  box-sizing: border-box;
  padding: 0 14px;
  font-size: 13px;
  flex: 0 0 auto;
}
.topbar button.ghost {
  padding: 0 10px;
}

/* Ghost / link buttons inside the topbar */
button.ghost {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 7px 10px;
  font-size: 13px;
}
button.ghost:hover { color: var(--accent); background: var(--panel-2); }
.link-btn {
  background: transparent;
  border: 0;
  color: var(--muted);
  padding: 0 4px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--body-font);
  cursor: pointer;
  text-decoration: underline;
}
.link-btn:hover { color: var(--accent); }

/* Annotation chip (only shown when there are pins) */
.annot-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
}
.annot-chip .annot-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
}
.annot-chip .link-btn { color: var(--accent); }

/* Live session status chip (debug panel) */
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  white-space: nowrap;
}
.status-chip .dot { width: 8px; height: 8px; border-radius: 50%; flex: 0 0 auto; background: var(--muted); }
.status-chip .label { color: var(--text); }
.status-chip .detail { display: none; } /* surfaced via title (hover) */
.status-chip.initializing { border-color: var(--warn); color: var(--warn); }
.status-chip.initializing .dot { background: var(--warn); }
.status-chip.initializing .label { color: var(--warn); }
.status-chip.ready { border-color: var(--ok); color: var(--ok); }
.status-chip.ready .dot { background: var(--ok); }
.status-chip.ready .label { color: var(--ok); }
.status-chip.failed { border-color: var(--err); color: var(--err); }
.status-chip.failed .dot { background: var(--err); }
.status-chip.failed .label { color: var(--err); }

/* Developer / debug strip — session, health, API responses (bottom of page). */
.debug-panel {
  margin-top: 20px;
  padding: 12px 16px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--panel-2);
}
.debug-panel-head {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--muted);
  margin-bottom: 10px;
}
.debug-panel-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.debug-panel .status-chip .detail {
  display: inline;
  color: var(--muted);
  font-weight: 500;
  margin-left: 4px;
}
.debug-panel .status-line {
  margin: 4px 0 0;
}
.debug-panel .health-line {
  margin: 6px 0 0;
}

/* Transient status line (render/inspect/load messages) — collapses when empty. */
.status-line {
  margin: 0;
  font-size: 13px;
  min-height: 0;
}
.status-line:empty { display: none; }
.status-line.ok { color: var(--ok); }
.status-line.err { color: var(--err); }
.status-line.busy { color: var(--warn); }

/* Health output (only visible after clicking Health) */
.health-line { margin: 0; }
.health-line:empty { display: none; }

/* Engineering hint that sits below the topbar (under the file selector). */
.topbar-sub { margin: 2px 2px 8px; font-size: 12px; }
.topbar-sub:empty { display: none; }
.topbar-sub code { color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

@media (max-width: 1100px) {
  .topbar {
    flex-wrap: wrap;
    row-gap: 8px;
  }
  .tb-right {
    flex: 1 1 100%;
    margin-left: 0;
    justify-content: flex-end;
    padding-top: 8px;
    border-top: 1px solid var(--border);
  }
  #contentMenu.is-model .tb-interact-sep { display: none; }
}

.row { display: flex; gap: 10px; align-items: center; margin-top: 14px; }
button {
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: var(--radius);
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--body-font);
  cursor: pointer;
  transition: background .15s, box-shadow .15s;
}
button:hover { background: var(--accent-2); }
button:disabled { background: #E5E7EB; color: #9AA3B2; cursor: not-allowed; }
button.secondary { background: var(--panel); border: 1px solid var(--border); color: var(--text); }
button.secondary:hover { background: var(--panel-2); border-color: var(--border-strong); }

/* Path form */
.pathrow { display: flex; gap: 10px; }
.pathrow input {
  flex: 1;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 9px 12px;
  font: 13px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.pathrow input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(1,14,208,.15); }

/* Workspace: one visible pane — 3D model OR specification */
.workspace-main {
  position: relative;
  height: calc(100vh - 160px);
  min-height: 460px;
}
.workspace-main > .workspace-pane {
  display: none;
  margin-top: 0;
  height: 100%;
  min-height: 0;
}
.workspace-main > #preview.workspace-pane.workspace-active {
  display: flex;
  flex-direction: column;
}
.workspace-main > #result.workspace-pane.workspace-active {
  display: block;
  overflow: auto;
  padding: 16px 20px;
}
.workspace-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
  text-align: center;
}
.seg-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}
.kv { display: grid; grid-template-columns: 160px 1fr; gap: 6px 14px; font-size: 13px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-word; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 11px; font-weight: 600; }
.badge.real { background: var(--accent-soft); color: var(--accent); }
.badge.text { background: rgba(182,124,0,.14); color: var(--warn); }
.badge.ext { background: rgba(26,143,60,.14); color: var(--ok); }

table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 6px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
td.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }

details { margin-top: 14px; }
summary { cursor: pointer; color: var(--muted); font-size: 12px; }
pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  overflow: auto;
  font: 12px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--ink);
}
a { color: var(--accent); }

.seg { display: inline-flex; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--panel); flex: 0 0 auto; }
.seg-btn {
  background: var(--panel); color: var(--muted);
  border: 0; border-radius: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: var(--tb-h);
  box-sizing: border-box;
  padding: 0 12px;
  font-size: 13px; font-weight: 600;
  font-family: var(--body-font);
  cursor: pointer;
  transition: background .15s, color .15s;
}
.seg-btn:hover { color: var(--text); background: var(--panel-2); }
.seg-btn.selected { background: var(--accent); color: #fff; }

.preview-card { display: flex; flex-direction: column; min-height: 420px; }
.preview-card #previewBody { flex: 1; display: flex; align-items: center; justify-content: center; overflow: hidden; position: relative; }
.preview-card #previewBody img { display: block; }
.preview-card #previewBody canvas.viewer-canvas { display: block; width: 100%; height: 100%; }
.preview-card .hint { text-align: center; }

/* Full-width, viewport-dominant 3D area inside the workspace shell. */
.preview-full {
  padding: 0;
  overflow: visible;
}
.preview-full #previewBody {
  overflow: hidden;
  border-radius: 0 0 var(--radius) var(--radius);
}
.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  flex: 0 0 auto;
  overflow: visible;
  position: relative;
  z-index: 4;
}
.preview-title {
  font-size: 14px;
  font-weight: 600;
  font-family: var(--head-font);
  color: var(--ink);
  letter-spacing: -.01em;
  min-width: 0;
}
.preview-header .seg {
  flex: 0 0 auto;
}
.preview-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* Finish swatches — RAL / stainless preview (client-side material tint) */
.finish-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 2px 4px 2px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel-2);
}
.finish-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
.finish-swatches {
  display: flex;
  align-items: center;
  gap: 5px;
}
.finish-swatch {
  position: relative;
  width: 22px;
  height: 22px;
  padding: 0;
  border-radius: 50%;
  border: 2px solid #fff;
  background: var(--sw, #bfc4cc);
  box-shadow: 0 0 0 1px var(--border-strong);
  cursor: pointer;
  transition: transform .12s ease, box-shadow .12s ease;
}
.finish-swatch:hover {
  transform: scale(1.12);
}
.finish-swatch.selected {
  box-shadow: 0 0 0 2px var(--accent);
  transform: scale(1.08);
}
.finish-swatch-tip {
  display: none;
  position: absolute;
  left: 50%;
  top: calc(100% + 6px);
  transform: translateX(-50%);
  padding: 3px 7px;
  border-radius: 4px;
  background: rgba(15, 17, 21, .92);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
  z-index: 6;
}
.preview-controls,
.finish-bar,
.finish-swatches {
  overflow: visible;
}
.finish-swatch:hover .finish-swatch-tip,
.finish-swatch:focus-visible .finish-swatch-tip {
  display: block;
}

.share-btn {
  appearance: none;
  height: var(--tb-h);
  padding: 0 12px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  font-size: 12px;
  font-weight: 650;
  font-family: var(--body-font);
  cursor: pointer;
  white-space: nowrap;
}
.share-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}
.share-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* API base indicator (only relevant when the frontend is served separately
   from the incad-webapi backend). Lives in the debug panel. */
.debug-panel #apiBaseBar {
  display: none;
  margin: 0 0 8px;
  padding: 0;
  border: none;
  background: transparent;
  font: 12px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color: var(--muted);
}
.debug-panel #apiBaseBar.show { display: block; }
.debug-panel #apiBaseBar code { color: var(--accent); }

/* ---------------- Annotation pins (HTML overlay projected from 3D) ---------------- */
#pinsLayer {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 2;
}
/* Pin: origin (top-left) sits exactly on the anchor point on the model.
   The dot is centered on that point; the label is offset to the side and
   the SVG line links the dot to the label's near corner. */
.pin {
  position: absolute;
  width: 0;
  height: 0;
  pointer-events: none;
  cursor: pointer;
}
.pin .dot {
  position: absolute;
  left: 0;
  top: 0;
  transform: translate(-50%, -50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--c, #4f8cff);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.6);
  transition: transform .1s;
  pointer-events: auto;
}
.pin:hover .dot { transform: translate(-50%, -50%) scale(1.25); }
.pin .stem {
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 1px;
  overflow: visible;
  color: var(--c, #4f8cff);
  pointer-events: none;
  opacity: .85;
}
.pin .stem line {
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}
.pin .label {
  position: absolute;
  left: 0;
  top: 0;
  max-width: 220px;
  padding: 4px 9px;
  border-radius: 6px;
  background: rgba(15,17,21,.88);
  border-left: 3px solid var(--c, #4f8cff);
  color: var(--text);
  font-size: 11px;
  line-height: 1.3;
  white-space: normal;
  text-align: left;
  pointer-events: auto;
  user-select: none;
  box-shadow: 0 2px 8px rgba(0,0,0,.45);
}
.pin .label .cat {
  display: block;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: rgba(255,255,255,.62);
  margin-bottom: 1px;
}
/* Compact: dots only; labels + connectors appear on hover. */
#pinsLayer.annot-compact .pin .label,
#pinsLayer.annot-compact .pin .stem {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .12s ease, visibility .12s ease;
}
#pinsLayer.annot-compact .pin:hover {
  z-index: 4;
}
#pinsLayer.annot-compact .pin:hover .label,
#pinsLayer.annot-compact .pin:hover .stem {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.pin.behind { display: none; }
.preview-card.annotate #previewBody { cursor: crosshair; }

/* Corner XYZ axis gizmo — separate overlay (must not inherit full-size viewer canvas CSS). */
.preview-card #previewBody canvas.axis-gizmo-canvas {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 96px;
  height: 96px;
  pointer-events: none;
  z-index: 3;
}

/* Zoom +/- overlay (bottom-right of 3D viewport) */
.zoom-controls {
  position: absolute;
  right: 12px;
  bottom: 12px;
  z-index: 3;
  display: none;
  flex-direction: column;
  gap: 6px;
}
.zoom-btn {
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: #fff;
  color: var(--ink);
  font-size: 22px;
  font-weight: 600;
  line-height: 1;
  font-family: var(--body-font);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(10, 13, 49, 0.18);
  transition: border-color .15s, color .15s;
}
.zoom-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------------- Annotations list ---------------- */
#annotList { margin-top: 8px; }
.annot-item {
  display: grid;
  grid-template-columns: 24px 90px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.annot-item:last-child { border-bottom: 0; }
.annot-item .swatch {
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--c, #4f8cff);
  border: 1px solid rgba(0,0,0,.15);
}
.annot-item .cat { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.annot-item .text { word-break: break-word; }
.annot-item .text .meta { color: var(--muted); font-size: 11px; }
.annot-item .focus-btn {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 4px 10px;
  font-size: 12px;
  border-radius: var(--radius);
}
.annot-item .focus-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ---------------- Annotation popover ---------------- */
.annot-popover {
  position: fixed;
  z-index: 1000;
  width: 280px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: 0 8px 28px rgba(10,13,49,.18);
}
.annot-popover-title { font-size: 12px; color: var(--muted); margin-bottom: 8px; text-transform: uppercase; letter-spacing: .04em; font-weight: 600; }
.annot-popover textarea {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius);
  padding: 8px;
  font: 13px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  resize: vertical;
}
.annot-popover textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(1,14,208,.15); }
.annot-cat { display: flex; gap: 6px; margin: 10px 0; flex-wrap: wrap; }
.cat-btn {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
}
.cat-btn::before {
  content: '';
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c);
  margin-right: 6px;
  vertical-align: middle;
}
.cat-btn.selected { border-color: var(--c); box-shadow: 0 0 0 1px var(--c) inset; }
.annot-popover-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 4px; }
.annot-popover-actions button { padding: 6px 12px; font-size: 12px; }

/* ---- Auth gate (split-screen login) / user chip ---- */
body.auth-locked {
  overflow: hidden;
}
body.auth-locked #appHeader,
body.auth-locked #appShell {
  display: none !important;
}

.auth-gate {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--panel);
}
.auth-gate-split {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(0, 1.15fr);
  width: 100%;
  height: 100%;
  min-height: 100vh;
  min-height: 100dvh;
}
.auth-gate-form {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 40px;
  background: var(--panel);
}
.auth-gate-form-inner {
  width: min(360px, 100%);
  display: flex;
  flex-direction: column;
  gap: 36px; /* brand ↔ action */
}
.auth-lang {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  flex: 0 0 auto;
}
.auth-lang-btn {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  font-family: var(--head-font);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  padding: 6px 10px;
  cursor: pointer;
  line-height: 1;
}
.auth-lang-btn + .auth-lang-btn {
  border-left: 1px solid var(--border);
}
.auth-lang-btn:hover { color: var(--ink); }
.auth-lang-btn.is-active {
  background: var(--accent-soft);
  color: var(--accent);
}

/* ---------------- Settings dialog ---------------- */
.settings-overlay {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(15, 17, 21, 0.42);
}
.settings-overlay[hidden] { display: none !important; }
.settings-dialog {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 18px 48px rgba(15, 17, 21, 0.18);
  overflow: hidden;
}
.settings-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--border);
}
.settings-head h2 {
  margin: 0;
  font-family: var(--head-font);
  font-size: 16px;
  font-weight: 650;
  color: var(--ink);
}
.settings-close {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 22px;
  line-height: 1;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  cursor: pointer;
}
.settings-close:hover {
  color: var(--ink);
  background: var(--panel-2);
}
.settings-body {
  padding: 16px 18px 20px;
}
.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.settings-row-copy {
  min-width: 0;
}
.settings-label {
  font-family: var(--head-font);
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
}
.settings-hint {
  margin-top: 4px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.35;
}
.settings-lang {
  flex: 0 0 auto;
}

.auth-gate-heading {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
}
.auth-gate-kicker {
  display: block;
  min-height: 1.2em;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.auth-gate-product {
  margin: 0;
  font-family: var(--head-font);
  font-weight: 700;
  font-size: clamp(26px, 2.8vw, 32px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ink);
}
.auth-gate-slogan {
  margin: 0;
  min-height: calc(15px * 1.45 * 3); /* longer slogan; EN/DE wrap without reflow */
  font-size: 15px;
  line-height: 1.45;
  color: var(--muted);
}
.auth-gate-action {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.auth-gate-msg {
  margin: 0;
  font-family: var(--head-font);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text);
}
.auth-gate-msg[hidden] { display: none !important; }
.auth-gate-detail {
  margin: -4px 0 0;
  font-size: 12px;
  line-height: 1.45;
  font-style: italic;
  color: var(--muted);
}
.auth-gate-detail:empty { display: none; }
.auth-signin-btn {
  appearance: none;
  display: block;
  width: 100%;
  border: none;
  background: var(--accent);
  color: #fff;
  font-family: var(--head-font);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.2;
  min-height: 44px;
  padding: 12px 18px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background .15s ease, transform .15s ease;
}
.auth-signin-btn:hover { background: var(--accent-2); }
.auth-signin-btn:active { transform: translateY(1px); }
.auth-signin-btn:disabled {
  opacity: .65;
  cursor: wait;
}
.auth-gate-signout {
  display: block;
  width: 100%;
  margin: 0;
  appearance: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 13px;
  padding: 10px 14px;
  border-radius: var(--radius);
  cursor: pointer;
}
.auth-gate-signout:hover {
  border-color: var(--border-strong);
  color: var(--text);
}
.auth-gate-legal {
  margin: 4px 0 0;
  min-height: calc(12px * 1.5 * 2); /* DE ToU/PP wraps to 2 lines */
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}
.auth-gate-legal a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.auth-gate-legal a:hover { color: var(--accent); }

.auth-gate-visual {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: #fff;
  display: flex;
  align-items: flex-end;
  padding: 40px 44px;
}
.auth-gate-visual-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(160deg,
      rgba(10,13,49,.55) 0%,
      rgba(10,13,49,.35) 42%,
      rgba(1,14,208,.55) 100%),
    url(assets/header-bg.png) center / cover no-repeat,
    var(--ink);
  transform: scale(1.02);
  animation: auth-visual-drift 18s ease-in-out infinite alternate;
}
.auth-gate-visual-copy {
  position: relative;
  z-index: 1;
  max-width: 420px;
}
.auth-gate-visual-line {
  margin: 0;
  min-height: calc(1.25em * 2);
  font-family: var(--head-font);
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.015em;
  color: #fff;
  text-wrap: balance;
}
@keyframes auth-visual-drift {
  from { transform: scale(1.02) translate3d(0, 0, 0); }
  to { transform: scale(1.06) translate3d(-1.5%, -1%, 0); }
}

@media (max-width: 860px) {
  .auth-gate-split {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }
  .auth-gate-visual {
    min-height: 34vh;
    order: -1;
    padding: 28px 24px;
  }
  .auth-gate-form {
    align-items: center;
    padding: 72px 24px 40px;
  }
  .auth-gate-visual-line { font-size: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .auth-gate-visual-bg { animation: none; }
}