.builder-header { padding: 16px; }
.builder-loading { background: #eff6ff; border: 1px solid #bfdbfe; border-radius: 12px; padding: 10px 12px; color: #1d4ed8; margin-bottom: 10px; }
.step-bar { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-top: 12px; }
.step-pill { border: 1px solid var(--color-border); background: #fff; border-radius: 999px; padding: 8px 10px; font-size: 12px; }
.step-pill.active { background: #e8edff; border-color: var(--color-primary); color: var(--color-primary-dark); }
.builder-layout { display: grid; gap: 12px; }
.builder-layout > .ch-card { padding: 16px; }
.stacked { display: grid; gap: 10px; margin-top: 12px; }
.module-card { border: 1px solid var(--color-border); border-radius: 12px; padding: 10px; background: #f9fbff; }
.module-head { display: flex; gap: 8px; align-items: center; justify-content: space-between; }
.inline-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.lesson-list { margin-top: 8px; display: grid; gap: 6px; }
.lesson-chip { width: 100%; text-align: right; border: 1px solid var(--color-border); border-radius: 10px; background: #fff; padding: 10px; display: flex; justify-content: space-between; }
.lesson-state { color: var(--color-text-muted); font-size: 12px; font-weight: 600; }
.lesson-chip.active { border-color: var(--color-primary); box-shadow: inset 0 0 0 1px var(--color-primary); }
.lesson-settings-card { margin-top: 12px; padding: 12px; }
.lesson-settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.switch-row { display: flex; align-items: center; gap: 8px; margin: 8px 0; }

.slide-grid { display: grid; grid-template-columns: minmax(260px, 300px) minmax(0, 1fr); gap: 14px; align-items: start; }
.slide-grid > section { min-width: 0; }
.slide-list { display: grid; gap: 10px; margin-top: 8px; max-height: 340px; overflow: auto; }
.slide-thumb { border: 1px solid var(--color-border); background: #fff; border-radius: 10px; padding: 8px; display: grid; gap: 8px; }
.slide-thumb-main { border: 0; background: transparent; padding: 0; text-align: right; cursor: pointer; display: grid; gap: 8px; }
.slide-thumb.active { border-color: var(--color-primary); box-shadow: inset 0 0 0 1px var(--color-primary); }
.slide-thumb-canvas { position: relative; height: 92px; border-radius: 8px; overflow: hidden; border: 1px solid rgba(51, 92, 255, 0.2); }
.slide-thumb-canvas .canvas-element { pointer-events: none; padding: 3px; }
.slide-thumb-title { font-size: 13px; font-weight: 700; color: #0f172a; }
.slide-thumb-actions { display: flex; justify-content: flex-end; gap: 6px; }
.slide-thumb-empty { color: #64748b; font-size: 12px; padding: 8px; display: inline-block; }

.slide-canvas { border: 1px dashed #9db1ec; width: 100%; aspect-ratio: 16 / 9; min-height: 520px; border-radius: 14px; position: relative; overflow: hidden; background: #f8fafc; }
.canvas-element { position: absolute; border: 1px solid transparent; padding: 6px; user-select: none; touch-action: none; overflow: hidden; }
.canvas-element.selected { border-color: var(--color-primary); box-shadow: 0 0 0 2px rgba(51, 92, 255, 0.2); }
.canvas-element [contenteditable="true"] { width: 100%; height: 100%; outline: none; cursor: text; white-space: pre-wrap; }
.canvas-element[data-el-type="image"],
.canvas-element[data-el-type="video"],
.canvas-element[data-el-type="shape"] { padding: 0; }
.canvas-element img,
.canvas-element video,
.canvas-element iframe { width: 100%; height: 100%; object-fit: cover; border: 0; }
.media-editor { display: grid; grid-template-rows: auto 1fr; height: 100%; }
.media-placeholder { display: grid; place-items: center; height: 100%; color: #64748b; font-size: 12px; border: 1px dashed #cbd5e1; background: rgba(255,255,255,.65); }
.resize-handle { position: absolute; width: 12px; height: 12px; bottom: -6px; left: -6px; border-radius: 50%; border: 0; background: var(--color-primary); cursor: nwse-resize; }
.media-url-inline { width: 100%; border: 1px solid var(--color-border); border-radius: 8px; padding: 6px; font-size: 12px; }

.element-inspector { margin-top: 12px; border: 1px solid var(--color-border); background: #fff; border-radius: 12px; padding: 10px; }
.element-inspector-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.element-inspector-grid .full { grid-column: 1 / -1; }

.quiz-card { display: grid; gap: 12px; }
.quiz-question { border: 1px solid var(--color-border); border-radius: 12px; padding: 10px; background: #fff; }
.quiz-option-row { display: grid; grid-template-columns: 1fr auto; gap: 8px; margin: 6px 0; }
.quiz-option-row .inline-actions { justify-content: flex-end; align-items: center; }
.preview-landing { display: grid; grid-template-columns: 230px 1fr; gap: 12px; align-items: start; }
.preview-landing img { width: 100%; border-radius: 12px; object-fit: cover; max-height: 160px; }
.preview-curriculum, .preview-lesson, .preview-quiz { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--color-border); }
.preview-quiz-question { border: 1px dashed var(--color-border); border-radius: 10px; padding: 10px; margin-top: 8px; background: #fff; }
.preview-quiz-question ol { margin: 6px 0 0; padding-inline-start: 20px; }
.slide-preview-mini { position: relative; height: 180px; border-radius: 10px; overflow: hidden; }
.slide-preview-live .canvas-element { padding: 2px; pointer-events: none; }
.slide-preview-live .canvas-element img,
.slide-preview-live .canvas-element video,
.slide-preview-live .canvas-element iframe { pointer-events: none; }
.builder-footer-actions { display: flex; justify-content: space-between; align-items: center; }
.submit-actions { display: flex; gap: 8px; margin-top: 8px; }
.review-row { border: 1px solid var(--color-border); border-radius: 10px; padding: 10px; margin-top: 8px; }
.review-timeline article { border-inline-start: 3px solid var(--color-primary); padding: 6px 10px; margin-bottom: 8px; background: #f6f8ff; }
.empty-box { border: 1px dashed var(--color-border); background: #f8fbff; color: var(--color-text-muted); border-radius: 10px; padding: 12px; text-align: center; }

.ch-btn.tiny { padding: 4px 8px; font-size: 12px; border-radius: 8px; }

@media (max-width: 980px) {
  .step-bar { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .slide-grid, .lesson-settings-grid, .preview-landing, .element-inspector-grid { grid-template-columns: 1fr; }
}


#builderRoot.app-shell { width: min(1500px, 97%); }