/* ==========================================================================
   Linh Hua: admin course bar, draft state and course details.
   Admin pages only (Manage Course, Manage Exam). Small additions in the
   existing admin visual language; no changes to the shared admin styles.
   ========================================================================== */

.admin-bar {
  margin-bottom: 20px;
}

.admin-bar-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.admin-bar-label {
  font-size: 0.8rem;
  font-weight: 600;
}

.admin-bar-select {
  flex: 1 1 260px;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font: inherit;
  color: var(--text);
  background: #fff;
}

[data-theme="dark"] .admin-bar-select {
  background: var(--surface-alt);
}

.admin-draft-badge {
  display: inline-block;
  padding: 3px 10px;
  border: 1px dashed currentColor;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
}

.admin-bar-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.admin-bar-tab {
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

.admin-bar-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.admin-bar-tab[aria-current="page"] {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-dark);
}

.admin-bar-note {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--muted);
}

.admin-bar-note--error {
  color: var(--danger);
  font-weight: 600;
}

/* Course details / new course form additions */
.admin-hint {
  font-size: 0.8rem;
  color: var(--muted);
}

.admin-form-error {
  margin-top: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--danger);
}

.admin-form-error:empty {
  display: none;
}

.admin-note {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  font-size: 0.82rem;
  color: var(--text);
}

.admin-course-form .manage-form-actions {
  flex-wrap: wrap;
}

.manage-form input[readonly] {
  color: var(--muted);
  background: transparent;
}

.manage-form select:disabled {
  opacity: 0.6;
}

/* Identity preview: the same tokens the Course page uses */
.admin-identity-preview {
  display: block;
  max-width: 240px;
  height: 6px;
  margin-top: 8px;
  border-radius: 3px;
  background: var(--id-fill);
}

.admin-identity-preview[data-identity-secondary] {
  background: linear-gradient(90deg, var(--id-fill), var(--id2-fill));
}

/* Position integrity warning (duplicates or gaps) */
.admin-position-warning {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
  padding: 8px 12px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--muted);
}

/* .manage-toolbar sets display:flex, which would override the hidden attribute */
.manage-toolbar[hidden] {
  display: none;
}

/* Study Guide manager: HTML source editor and sandboxed, non-authoritative preview */
.manage-form .admin-source {
  min-height: 18rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  tab-size: 2;
}

.admin-preview-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-top: 12px;
}

.admin-preview-frame {
  display: block;
  width: 100%;
  height: 360px;
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #fff;
}

[data-theme="dark"] .admin-preview-frame {
  background: #171a26;
}

.admin-preview-frame[hidden] {
  display: none;
}

/* Study Guide release panel: state in words, never colour alone */
.admin-release {
  margin-bottom: 20px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.admin-release[hidden] {
  display: none;
}

.admin-release-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 12px;
}

.admin-release-title {
  margin: 0;
  font-size: 1.05rem;
}

.admin-release-status {
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--muted);
}

.admin-release-status[data-state="unreleased"] {
  border-color: transparent;
  background: var(--accent-soft);
  color: var(--text);
}

.admin-release-status[data-state="released"] {
  border-color: transparent;
  background: var(--success-soft);
  color: var(--success);
}

.admin-release-text {
  margin: 10px 0 0;
  font-size: 0.88rem;
  color: var(--text);
}

.admin-release-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin-top: 12px;
}

.admin-release .btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Editing a released guide changes what students see right away */
.admin-live-note {
  margin: 0 0 12px;
  padding: 8px 12px;
  border-left: 3px solid var(--success);
  border-radius: var(--radius-sm);
  background: var(--success-soft);
  font-size: 0.85rem;
  color: var(--text);
}

.admin-live-note strong {
  margin-right: 4px;
  color: var(--success);
}

.admin-live-note[hidden] {
  display: none;
}

/* Markup the student page shows differently (images, h1/h2) */
.admin-content-warning {
  margin: 8px 0 0;
  padding: 8px 12px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text);
}

.admin-untitled {
  font-style: italic;
  color: var(--muted);
}