/* ============================================================
   CE Studio — OneNote-style infinite canvas + PowerPoint-Morph
   stage windows. All rules scoped to #ceStudio* / .ce-studio-*.
   Theme tokens mirror the site's app pages (see apps.css).
   ============================================================ */

:root {
  --ce-studio-header: #18398a;
  --ce-studio-bg: #f7f9fb;
  --ce-studio-ink: #1f2937;
  --ce-studio-muted: #6b7280;
  --ce-studio-line: #e5e7eb;
  --ce-studio-panel: #ffffff;
  --ce-studio-accent: #2563eb;
  --ce-studio-radius: 12px;
}

html, body.ce-studio-body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
}
body.ce-studio-body {
  background: var(--ce-studio-bg);
  color: var(--ce-studio-ink);
  font: 14px/1.4 'Inter', 'Segoe UI', system-ui, sans-serif;
  touch-action: none;
}

#ceStudioApp {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
}

/* ── Toolbar ─────────────────────────────────────────────── */
#ceStudioToolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px 10px;
  background: var(--ce-studio-panel);
  border-bottom: 1px solid var(--ce-studio-line);
  box-shadow: 0 2px 8px rgba(24, 57, 138, 0.06);
  z-index: 30;
  user-select: none;
}
.ce-studio-brand {
  font-weight: 700;
  color: var(--ce-studio-header);
  font-size: 15px;
  margin-right: 8px;
  letter-spacing: -0.01em;
}
.ce-studio-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 30px;
  padding: 3px 9px;
  border: 1px solid var(--ce-studio-line);
  border-radius: 8px;
  background: #fff;
  color: var(--ce-studio-ink);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s;
}
.ce-studio-btn:hover { border-color: var(--ce-studio-accent); background: #f0f6ff; }
.ce-studio-btn[aria-pressed="true"] {
  background: #e4edff;
  border-color: var(--ce-studio-accent);
  color: var(--ce-studio-header);
  font-weight: 600;
}
.ce-studio-btn:disabled { opacity: 0.45; cursor: default; }
.ce-studio-btn.is-danger:hover { border-color: #dc2626; background: #fef2f2; color: #b91c1c; }
.ce-studio-btn.is-primary {
  background: var(--ce-studio-header);
  border-color: var(--ce-studio-header);
  color: #fff;
  font-weight: 600;
}
.ce-studio-btn.is-primary:hover { background: #21469f; }
.ce-studio-kbd {
  font-size: 10px;
  color: var(--ce-studio-muted);
  border: 1px solid var(--ce-studio-line);
  border-radius: 4px;
  padding: 0 3px;
  line-height: 1.3;
}
.ce-studio-btn[aria-pressed="true"] .ce-studio-kbd { color: var(--ce-studio-header); border-color: #b7c8ec; }
.ce-studio-sep {
  width: 1px;
  height: 22px;
  background: var(--ce-studio-line);
  margin: 0 4px;
}
.ce-studio-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.12);
  cursor: pointer;
  padding: 0;
}
.ce-studio-swatch[aria-pressed="true"] {
  border-color: var(--ce-studio-accent);
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.25);
}
.ce-studio-size {
  width: 74px;
  accent-color: var(--ce-studio-accent);
}

/* ── Viewport / canvases ─────────────────────────────────── */
#ceStudioViewport {
  position: relative;
  flex: 1;
  overflow: hidden;
  background: var(--ce-studio-bg);
  cursor: crosshair;
}
#ceStudioViewport.is-panning { cursor: grabbing !important; }
#ceStudioInk, #ceStudioPreviewCanvas {
  position: absolute;
  inset: 0;
  touch-action: none;
}
#ceStudioPreviewCanvas { z-index: 2; }
#ceStudioWorld {
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  transform-origin: 0 0;
  z-index: 3;
  pointer-events: none;
}

/* resize cursors toggled from JS (mirrors ce-scratch's .ce-rz-*) */
.ce-rz-nwse { cursor: nwse-resize !important; }
.ce-rz-nesw { cursor: nesw-resize !important; }
.ce-rz-ns { cursor: ns-resize !important; }
.ce-rz-ew { cursor: ew-resize !important; }
.ce-rz-rotate { cursor: alias !important; }

/* text editor overlay */
.ce-studio-textedit {
  position: absolute;
  z-index: 20;
  min-width: 60px;
  min-height: 30px;
  background: rgba(255, 255, 255, 0.92);
  border: 1.5px dashed var(--ce-studio-accent);
  border-radius: 4px;
  outline: none;
  resize: both;
  padding: 2px 4px;
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  color: inherit;
  overflow: hidden;
}

/* ── Status bar ──────────────────────────────────────────── */
#ceStudioStatus {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 3px 10px;
  font-size: 11.5px;
  color: var(--ce-studio-muted);
  background: var(--ce-studio-panel);
  border-top: 1px solid var(--ce-studio-line);
  z-index: 30;
  user-select: none;
  white-space: nowrap;
  overflow: hidden;
}
#ceStudioHint { overflow: hidden; text-overflow: ellipsis; }
#ceStudioZoom {
  cursor: pointer;
  font-weight: 600;
  color: var(--ce-studio-header);
}

/* ── Stage windows ───────────────────────────────────────── */
.ce-studio-stage {
  position: absolute;
  display: flex;
  flex-direction: column;
  pointer-events: auto;
  background: #fff;
  border: 1.5px solid #c8d5ea;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(24, 57, 138, 0.14);
  overflow: hidden;
  user-select: none;
}
.ce-studio-stage.is-active { border-color: var(--ce-studio-accent); box-shadow: 0 10px 30px rgba(37, 99, 235, 0.28); }

.ce-studio-stage-head {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 3px 6px;
  background: linear-gradient(180deg, #f3f7ff, #e9f0fc);
  border-bottom: 1px solid #dbe5f5;
  cursor: grab;
  flex: 0 0 auto;
}
.ce-studio-stage-head:active { cursor: grabbing; }
.ce-studio-stage-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--ce-studio-header);
  margin-right: 6px;
  white-space: nowrap;
}
.ce-studio-stage-head .ce-studio-mini {
  min-height: 22px;
  min-width: 24px;
  padding: 1px 6px;
  border: 1px solid #ccd8ee;
  border-radius: 6px;
  background: #fff;
  color: var(--ce-studio-ink);
  font-size: 12px;
  line-height: 1.2;
  cursor: pointer;
}
.ce-studio-stage-head .ce-studio-mini:hover { border-color: var(--ce-studio-accent); background: #f0f6ff; }
.ce-studio-stage-head .ce-studio-mini[aria-pressed="true"] {
  background: #e4edff;
  border-color: var(--ce-studio-accent);
  font-weight: 700;
}
.ce-studio-stage-head .ce-studio-mini.is-close:hover { border-color: #dc2626; color: #b91c1c; background: #fef2f2; }
.ce-studio-stage-head .ce-studio-headsep { width: 1px; height: 16px; background: #d3def0; margin: 0 3px; }

.ce-studio-stage-body {
  position: relative;
  flex: 1;
  min-height: 40px;
  overflow: hidden;
  /* engineering-paper grid backdrop behind the WebGL canvas */
  background:
    linear-gradient(rgba(37, 99, 235, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.055) 1px, transparent 1px),
    #fdfefe;
  background-size: 24px 24px;
}
.ce-studio-stage-gl, .ce-studio-stage-ov {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.ce-studio-stage-ov { z-index: 2; touch-action: none; }
.ce-studio-stage.is-orbit .ce-studio-stage-ov { pointer-events: none; }
.ce-studio-stage.is-orbit .ce-studio-stage-body { cursor: move; }

/* timeline strip */
.ce-studio-stage-tl {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 3px 6px;
  border-top: 1px solid #dbe5f5;
  background: #f6f9ff;
  flex: 0 0 auto;
  overflow-x: auto;
  scrollbar-width: thin;
}
.ce-studio-kf {
  min-width: 24px;
  height: 22px;
  border: 1px solid #ccd8ee;
  border-radius: 6px;
  background: #fff;
  font-size: 11px;
  font-weight: 600;
  color: var(--ce-studio-muted);
  cursor: pointer;
  padding: 0 6px;
}
.ce-studio-kf.is-current {
  background: var(--ce-studio-header);
  border-color: var(--ce-studio-header);
  color: #fff;
}
.ce-studio-tl-dur {
  width: 52px;
  min-height: 20px;
  border: 1px solid #ccd8ee;
  border-radius: 6px;
  font: inherit;
  font-size: 11px;
  padding: 1px 4px;
}
.ce-studio-tl-label { font-size: 10px; color: var(--ce-studio-muted); }

/* corner resize handle */
.ce-studio-stage-rz {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 16px;
  height: 16px;
  cursor: nwse-resize;
  z-index: 5;
  background:
    linear-gradient(135deg, transparent 50%, rgba(37, 99, 235, 0.55) 50%);
  border-bottom-right-radius: 8px;
}

/* ── Transform panel (selected stage object) ─────────────── */
#ceStudioPanel {
  position: fixed;
  right: 12px;
  top: 56px;
  width: 218px;
  z-index: 40;
  background: var(--ce-studio-panel);
  border: 1px solid #dbe5f5;
  border-radius: var(--ce-studio-radius);
  box-shadow: 0 12px 32px rgba(24, 57, 138, 0.16);
  padding: 10px 12px;
  display: none;
}
#ceStudioPanel.is-open { display: block; }
#ceStudioPanel h4 {
  margin: 0 0 8px;
  font-size: 12.5px;
  color: var(--ce-studio-header);
}
.ce-studio-field { margin-bottom: 7px; }
.ce-studio-field label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--ce-studio-muted);
  margin-bottom: 1px;
}
.ce-studio-field label output { color: var(--ce-studio-ink); font-weight: 600; }
.ce-studio-field input[type="range"] {
  width: 100%;
  accent-color: var(--ce-studio-accent);
  margin: 0;
}