/* Scoped classroom controls; retain the existing teacher-workspace palette. */
.lesson-workspace-dialog .lesson-workspace-header-actions { flex-shrink: 0; }
.lesson-workspace-dialog .lesson-status-pill { white-space: nowrap; }
.lesson-workspace-dialog button:disabled { opacity: .55; cursor: not-allowed; }
.lesson-material-card > div { min-width: 0; }
.lesson-material-card strong,
.lesson-material-card p,
.lesson-material-editor label { overflow-wrap: anywhere; }
.lesson-material-controls,
.lesson-material-editor,
.lesson-material-file-preview,
.lesson-material-card .lesson-material-message { grid-column: 2 / -1; }
.lesson-material-controls { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.lesson-material-controls button,
.lesson-material-editor summary { min-height: 40px; }
.lesson-material-editor summary { cursor: pointer; color: var(--brand-action); line-height: 40px; }
.lesson-material-editor fieldset { display: grid; gap: 12px; margin: 10px 0 0; padding: 0; border: 0; min-width: 0; }
.lesson-material-editor label { display: grid; gap: 6px; color: var(--ink); font-size: .875rem; }
.lesson-material-editor input:not([type="checkbox"]),
.lesson-material-editor textarea { width: 100%; min-width: 0; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper, #fff); color: var(--ink); font: inherit; font-size: 1rem; box-sizing: border-box; }
.lesson-material-editor textarea { resize: vertical; }
.lesson-material-editor input[type="checkbox"] { accent-color: var(--brand-action); }
.lesson-material-page-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.lesson-material-question-options { display: grid; gap: 10px; margin-top: 12px; max-height: 320px; overflow-y: auto; scrollbar-width: thin; }
.lesson-material-question-options .lesson-question-option { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: start; }
.lesson-material-question-options .lesson-question-option[hidden],
.lesson-material-file-preview[hidden] { display: none; }
.lesson-material-file-preview { display: grid; gap: 12px; }
.lesson-material-file-preview iframe { width: 100%; height: 420px; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
.lesson-material-file-preview img { display: block; max-width: 100%; height: auto; }
.lesson-material-card .lesson-material-message { margin: 0; color: var(--ink); font-size: .875rem; line-height: 1.6; }
.lesson-material-message:empty { display: none; }
.lesson-material-editor :focus-visible,
.lesson-material-controls :focus-visible,
.teacher-schedule-entry:focus-visible { outline: 2px solid var(--brand-action); outline-offset: 3px; }
.lesson-material-card button:disabled,
.lesson-material-editor fieldset:disabled { opacity: .6; cursor: progress; }
.lesson-homework-materials { display: grid; gap: 12px; }
@media (max-width: 640px) {
  .lesson-material-controls,
  .lesson-material-editor,
  .lesson-material-file-preview,
  .lesson-material-card .lesson-material-message { grid-column: 1 / -1; }
  .lesson-material-editor summary,
  .lesson-material-controls button { min-height: 44px; }
  .lesson-material-file-preview iframe { height: 340px; }
}