/* Course editor — top-level. */

.course-editor {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 600px;
  background: var(--color-bg, #fff);
}

.course-editor__topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--color-border, #e5e7eb);
  background: var(--color-bg-elevated, #fafafa);
}

.course-editor__title-input {
  flex: 1;
  font-size: 1.2rem;
  font-weight: 600;
}

.course-editor__title-input input {
  font-size: 1.2rem;
  font-weight: 600;
}

.course-editor__save-indicator {
  font-size: 0.85rem;
  color: var(--color-text-muted, #6b7280);
  min-width: 80px;
  text-align: right;
}

.course-editor__save-indicator.is-error {
  color: var(--color-danger, #dc2626);
}

.course-editor__body {
  display: flex;
  flex: 1;
  min-height: 0;
}

.course-editor__rail {
  width: 280px;
  border-right: 1px solid var(--color-border, #e5e7eb);
  padding: 16px;
  overflow-y: auto;
  background: var(--color-bg-elevated, #fafafa);
}

.course-editor__rail h3 {
  margin: 0 0 12px 0;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--color-text-muted, #6b7280);
  letter-spacing: 0.05em;
}

.course-editor__chapters {
  list-style: none;
  margin: 0 0 12px 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.course-editor__empty-hint {
  margin: 8px 0 12px 0;
  font-size: 0.9rem;
  color: var(--color-text-muted, #6b7280);
}

.course-editor__chapter-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.15s ease;
  user-select: none;
}

.course-editor__chapter-row:hover {
  background: var(--color-hover, rgba(0, 0, 0, 0.04));
}

.course-editor__chapter-row.is-active {
  background: var(--color-primary-bg, rgba(59, 130, 246, 0.1));
  font-weight: 600;
}

.course-editor__chapter-handle {
  cursor: grab;
  color: var(--color-text-muted, #9ca3af);
  font-size: 0.9rem;
  letter-spacing: -2px;
}

.course-editor__chapter-title {
  flex: 1;
  font-size: 0.9rem;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

.course-editor__main {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.course-editor__grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 760px;
}

.course-editor__cover-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.course-editor__cover-preview {
  max-width: 320px;
  max-height: 180px;
  border-radius: 8px;
  border: 1px solid var(--color-border, #e5e7eb);
  object-fit: cover;
}

.course-editor__multiselect label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text, #1f2937);
}

.course-editor__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.course-editor__chip {
  border: 1px solid var(--color-border, #d1d5db);
  background: var(--color-bg, #fff);
  color: var(--color-text, #1f2937);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.course-editor__chip:hover {
  background: var(--color-hover, rgba(0, 0, 0, 0.04));
}

.course-editor__chip.is-active {
  background: var(--color-primary, #3b82f6);
  color: #fff;
  border-color: var(--color-primary, #3b82f6);
}

.course-editor__price-row {
  display: flex;
  gap: 12px;
  align-items: end;
}

.course-editor__price-row > * {
  flex: 1;
}

.course-editor__ctx-menu {
  position: fixed;
  z-index: 9999;
  background: #fff;
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  padding: 4px 0;
  min-width: 180px;
}

.course-editor__ctx-item {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  padding: 8px 12px;
  font-size: 0.9rem;
  cursor: pointer;
  color: var(--color-text, #1f2937);
}

.course-editor__ctx-item:hover {
  background: var(--color-hover, rgba(0, 0, 0, 0.04));
}

@media (max-width: 768px) {
  .course-editor__body { flex-direction: column; }
  .course-editor__rail { width: 100%; max-height: 200px; }
}