/* ═══════════════════════════════════════════════════════════════════════
   TRAINING (Prompt 88) — courses home + create/edit form + course detail.
   ─────────────────────────────────────────────────────────────────────
   Presentation for the genuinely-new training surfaces (§3): the two-tier
   course card, the "My training" rows, the create-form chips/toggle/cover
   field, and the detail meta rows. Everything else is reused — the modal
   shell (.callout-modal*), form fields (.callout-form-*), chips
   (.tasks-priority-pill / .card-loc-chip), buttons (.callout-btn*), the
   shared empty/error cards. All colours come from design tokens, so both
   themes (dark + css/11 light) are covered without a second block.
   Mobile-first full width (§4): the ≤599px trims live at the END (source
   order — a media query adds no specificity).
   ═══════════════════════════════════════════════════════════════════════ */

/* ── Lanes ──────────────────────────────────────────────────────────── */
.tr-lane { margin: 0 0 22px; }
.tr-lane:last-child { margin-bottom: 4px; }
.tr-lane-head { display: flex; align-items: center; gap: 8px; margin: 0 0 10px; }
.tr-lane-title {
  margin: 0 0 10px;
  font-family: var(--display);
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text-primary);
}
.tr-lane-head .tr-lane-title { margin: 0; }
.tr-lane-count {
  font-size: var(--text-xs); font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 999px; padding: 2px 9px;
}
.tr-lane-empty {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

/* ── "My training" rows ─────────────────────────────────────────────── */
.tr-myrows { display: flex; flex-direction: column; gap: 8px; }
.tr-myrow {
  display: flex; align-items: center; gap: 12px;
  width: 100%; text-align: left;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}
.tr-myrow:hover { border-color: var(--border-strong); }
.tr-myrow-ico { flex: 0 0 auto; display: grid; place-items: center; width: 24px; height: 24px; }
.tr-myrow-ico svg { width: 20px; height: 20px; }
.tr-myrow-main { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.tr-myrow-title {
  font-weight: 600; font-size: var(--text-base); color: var(--text-primary);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tr-myrow-sub { font-size: var(--text-xs); color: var(--text-muted); }

/* Status chips — shared by the rows here + the detail "You" line. */
.tr-status {
  flex: 0 0 auto;
  font-size: var(--text-xs); font-weight: 700;
  border-radius: 999px; padding: 4px 10px;
  white-space: nowrap;
  border: 1px solid transparent;
}
.tr-status-todo   { background: var(--bg-elevated);  color: var(--text-secondary); border-color: var(--border); }
.tr-status-warn   { background: var(--warning-soft);  color: var(--warning); }
.tr-status-danger { background: var(--danger-soft);   color: var(--danger); }
.tr-status-ok     { background: var(--success-soft);  color: var(--success); }

/* ── Course cards (manager lane, two-tier) ──────────────────────────── */
.tr-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 14px;
}
.tr-card {
  display: flex; flex-direction: column;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  transition: border-color 0.14s, transform 0.06s, box-shadow 0.14s;
}
.tr-card:hover { border-color: var(--border-strong); box-shadow: var(--shadow-sm, 0 6px 18px -10px rgba(0,0,0,0.4)); }
.tr-card:active { transform: scale(0.995); }
.tr-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.tr-card-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--bg-elevated);
  overflow: hidden;
}
.tr-card-cover-img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tr-card-cover-empty {
  display: grid; place-items: center;
  background: var(--accent-soft);
}
.tr-card-cover-empty svg { width: 34px; height: 34px; opacity: 0.9; }

.tr-card-body { display: flex; flex-direction: column; gap: 8px; padding: 12px 13px 13px; }
.tr-card-strip { display: flex; flex-wrap: wrap; gap: 6px; }
.tr-cat-ico { display: inline-grid; place-items: center; }
.tr-cat-ico svg { width: 13px; height: 13px; }
.tr-card-title {
  margin: 0;
  font-family: var(--display);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.tr-card-badges { display: flex; flex-wrap: wrap; gap: 6px; }
.tr-badge {
  font-size: var(--text-xs); font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 999px; padding: 3px 9px;
}
.tr-badge-warn { color: var(--warning); background: var(--warning-soft); border-color: transparent; }

.tr-card-signal { margin-top: 2px; }
.tr-signal {
  display: inline-block;
  font-size: var(--text-xs); font-weight: 700;
  border-radius: 999px; padding: 4px 10px;
}
.tr-signal.is-gap { color: var(--warning); background: var(--warning-soft); }

/* ── Create / edit form bits ────────────────────────────────────────── */
.tr-label-hint { font-weight: 400; color: var(--text-muted); font-size: var(--text-xs); }

.tr-chip-row { display: flex; flex-wrap: wrap; gap: 8px; }

/* "Start from" + any picker field button (reuses the .ah-locfield feel). */
.tr-picker-btn {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 11px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--text-primary); font-size: var(--text-base);
  cursor: pointer; text-align: left;
}
.tr-picker-btn:hover { border-color: var(--accent); }
.tr-picker-btn svg { width: 18px; height: 18px; flex: 0 0 auto; color: var(--text-secondary); }
.tr-picker-text { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tr-picker-chev { width: 16px !important; height: 16px !important; }

/* Cover field. */
.tr-cover-add {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 14px 12px;
  background: var(--bg-elevated);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  color: var(--text-secondary); font-size: var(--text-base); font-weight: 500;
  cursor: pointer;
}
.tr-cover-add:hover { border-color: var(--accent); color: var(--text-primary); }
.tr-cover-add svg { width: 22px; height: 22px; }
.tr-cover-set { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.tr-cover-thumb {
  width: 84px; height: 56px; object-fit: cover;
  border-radius: var(--radius-md); border: 1px solid var(--border);
  background: var(--bg-elevated); flex: 0 0 auto;
}
.tr-cover-thumb-loading { display: inline-block; }
.tr-cover-btn { padding: 8px 14px; font-size: var(--text-sm); }

/* Practical toggle (a pill switch — never a native control). */
.tr-toggle {
  display: inline-flex; align-items: center; gap: 10px;
  background: transparent; border: 0; padding: 4px 0; cursor: pointer;
}
.tr-toggle-track {
  position: relative; width: 42px; height: 24px; flex: 0 0 auto;
  background: var(--bg-elevated); border: 1px solid var(--border-strong);
  border-radius: 999px; transition: background 0.16s, border-color 0.16s;
}
.tr-toggle-knob {
  position: absolute; top: 2px; left: 2px; width: 18px; height: 18px;
  background: var(--text-muted); border-radius: 50%;
  transition: transform 0.16s, background 0.16s;
}
.tr-toggle.is-on .tr-toggle-track { background: var(--accent-soft); border-color: var(--accent); }
.tr-toggle.is-on .tr-toggle-knob { transform: translateX(18px); background: var(--accent); }
.tr-toggle-label { font-size: var(--text-base); font-weight: 500; color: var(--text-primary); }

.tr-teach {
  font-size: var(--text-sm); color: var(--text-secondary);
  background: var(--accent-soft); border-radius: var(--radius-md);
  padding: 10px 12px; line-height: 1.5;
}

/* ── Course detail ──────────────────────────────────────────────────── */
.tr-detail-desc { margin: 0; color: var(--text-secondary); font-size: var(--text-base); line-height: 1.55; }
.tr-detail-meta { display: flex; flex-direction: column; gap: 1px; }
.tr-detail-row {
  display: flex; align-items: baseline; gap: 12px;
  padding: 9px 0; border-bottom: 1px solid var(--border);
}
.tr-detail-row:last-child { border-bottom: 0; }
.tr-detail-row-label { flex: 0 0 42%; color: var(--text-muted); font-size: var(--text-sm); }
.tr-detail-row-value { flex: 1 1 auto; color: var(--text-primary); font-size: var(--text-base); font-weight: 500; }
.tr-detail-hint {
  margin: 0; font-size: var(--text-sm); color: var(--text-secondary);
  background: var(--bg-elevated); border-radius: var(--radius-md); padding: 10px 12px; line-height: 1.5;
}
.tr-detail-foot { flex-wrap: wrap; }

/* ── "My training" groups (Prompt 89) ───────────────────────────────── */
.tr-mygroup { margin: 0 0 14px; }
.tr-mygroup:last-child { margin-bottom: 0; }
.tr-mygroup-head { display: flex; align-items: center; gap: 8px; margin: 0 0 8px; }
.tr-mygroup-label {
  font-size: var(--text-xs); font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--text-muted);
}
.tr-mygroup-count {
  font-size: var(--text-xs); font-weight: 700; color: var(--text-secondary);
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 999px; padding: 1px 8px;
}

/* ═══ The course PLAYER (Prompt 89 — on the .cl-runner-modal shell) ════
   The runner shell (css/14) owns the overlay, scroll-lock, is-open fade and
   the 800px desktop popup. These are the genuinely-new pieces: the slide
   chrome (dots + counter), the cover, the confirm surface and the nav. */
.tr-player-head { padding-bottom: 6px; }
.tr-player-head .callout-detail-header-top { align-items: center; }
.tr-player-count {
  margin-left: auto;
  font-size: var(--text-xs); font-weight: 600; color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}
.tr-player-head .callout-detail-header-actions { margin-left: 8px; }
.tr-player-titlerow { padding: 8px 16px 0; }
.tr-player-course-title {
  margin: 0; font-family: var(--display); font-size: var(--text-base);
  font-weight: 600; letter-spacing: -0.01em; color: var(--text-primary);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tr-player-dots { display: flex; gap: 6px; padding: 10px 16px 4px; flex-wrap: wrap; }
.tr-player-dot {
  width: 7px; height: 7px; border-radius: 999px;
  background: var(--border-strong); transition: background 0.15s, transform 0.15s;
}
.tr-player-dot.is-done { background: var(--accent); opacity: 0.5; }
.tr-player-dot.is-active { background: var(--accent); transform: scale(1.3); }

.tr-player-loading {
  margin: auto; display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--text-secondary); font-size: var(--text-sm);
}

/* Cover slide */
.tr-player-cover-hero {
  width: 100%; aspect-ratio: 16 / 9; border-radius: var(--radius-lg);
  overflow: hidden; background: var(--bg-elevated); flex: 0 0 auto;
}
.tr-player-cover-hero-empty { display: grid; place-items: center; background: var(--accent-soft); }
.tr-player-cover-hero-empty svg { width: 44px; height: 44px; opacity: 0.9; }
.tr-player-cover-img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tr-player-cover-body { display: flex; flex-direction: column; gap: 12px; padding: 4px 2px 0; }
.tr-player-cover-strip { display: flex; flex-wrap: wrap; gap: 6px; }
.tr-player-cover-title {
  margin: 0; font-family: var(--display); font-size: var(--text-xl);
  font-weight: 600; letter-spacing: -0.02em; line-height: 1.2; color: var(--text-primary);
}
.tr-player-cover-meta { display: flex; flex-wrap: wrap; gap: 8px; }
.tr-player-cover-metachip {
  font-size: var(--text-xs); font-weight: 600; color: var(--text-secondary);
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: 999px; padding: 4px 10px;
}
.tr-player-cover-learn { display: flex; flex-direction: column; gap: 4px; }
.tr-player-cover-learn-label {
  font-size: var(--text-xs); font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--text-muted);
}
.tr-player-cover-desc { margin: 0; color: var(--text-secondary); font-size: var(--text-base); line-height: 1.55; }
.tr-player-cover-note {
  margin: 0; color: var(--text-secondary); font-size: var(--text-sm); line-height: 1.5;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 10px 12px;
}

/* Section slide — the block content is styled by the shared kb-doc-content rules. */
.tr-player-section-title {
  margin: 0 0 4px; font-family: var(--display); font-size: var(--text-lg);
  font-weight: 600; letter-spacing: -0.015em; color: var(--text-primary);
}

/* Confirm slide */
.tr-player-confirm {
  margin: auto; display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 14px; padding: 20px 6px; max-width: 460px; width: 100%;
}
.tr-player-state-icon {
  width: 72px; height: 72px; border-radius: 50%; display: grid; place-items: center; flex: 0 0 auto;
}
.tr-player-state-icon svg { width: 34px; height: 34px; }
.tr-player-state-icon.is-accent { background: var(--accent-soft); color: var(--accent); }
.tr-player-state-icon.is-ok { background: var(--success-soft); color: var(--success); }
.tr-player-state-icon.is-warn { background: var(--warning-soft); color: var(--warning); }
.tr-player-confirm-title {
  margin: 0; font-family: var(--display); font-size: var(--text-xl);
  font-weight: 600; letter-spacing: -0.02em; color: var(--text-primary);
}
.tr-player-confirm-sub { margin: 0; color: var(--text-secondary); font-size: var(--text-base); line-height: 1.55; }
.tr-player-confirm-statement {
  margin: 0; color: var(--text-primary); font-size: var(--text-base); font-weight: 500;
  line-height: 1.5; background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-md); padding: 14px 16px;
}
.tr-player-confirm-btn {
  margin-top: 2px; min-height: 48px; padding: 0 22px;
  display: inline-flex; align-items: center; gap: 10px;
}
.tr-player-confirm-btn svg { width: 20px; height: 20px; }
/* The satisfying done-state — a calm scale-in (joy, not gimmick; the §62 craft bar). */
.tr-player-done.is-fresh .tr-player-state-icon { animation: tr-pop 0.42s cubic-bezier(0.2, 0.9, 0.3, 1.3) both; }
@keyframes tr-pop {
  0% { transform: scale(0.4); opacity: 0; }
  60% { transform: scale(1.08); }
  100% { transform: scale(1); opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .tr-player-done.is-fresh .tr-player-state-icon { animation: none; }
}

/* Footer nav */
.tr-player-foot { display: flex; gap: 10px; }
.tr-player-nav { flex: 1 1 auto; display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; }
.tr-player-nav-ico { display: inline-grid; place-items: center; }
.tr-player-nav-ico svg { width: 18px; height: 18px; }

/* Info popup (step / photo / callout / table (i)) */
.tr-info-text { margin: 0 0 12px; color: var(--text-primary); font-size: var(--text-base); line-height: 1.55; }
.tr-info-photos { display: grid; grid-template-columns: repeat(auto-fill, minmax(88px, 1fr)); gap: 8px; }
.tr-info-photo {
  aspect-ratio: 1 / 1; border-radius: var(--radius-md); overflow: hidden;
  background: var(--bg-elevated); border: 1px solid var(--border);
  display: grid; place-items: center; cursor: pointer;
}
.tr-info-photo .kb-instr-step-photo-loading { font-size: var(--text-xs); color: var(--text-muted); }

/* ═══ RECORDS ENGINE (Prompt 90 — matrix · practical sign-off · ledger) ═══
   The manager records surfaces. Reuses the callout-modal shell, the .tr-status
   chips and .callout-btn buttons; these are the genuinely-new pieces: the
   matrix action bar, the collapsible status groups, the roster rows, the
   practical note step and the per-person ledger. Tone colours come from the
   design tokens (both themes free). */

/* "My record" lane link + shared tone dots. */
.tr-lane-link {
  margin-left: auto;
  background: transparent; border: 0; padding: 4px 2px; cursor: pointer;
  font-size: var(--text-sm); font-weight: 600; color: var(--accent);
}
.tr-lane-link:hover { text-decoration: underline; }
.tr-rec-dot-ok     { --dot: var(--success); }
.tr-rec-dot-warn   { --dot: var(--warning); }
.tr-rec-dot-danger { --dot: var(--danger); }
.tr-rec-dot-todo   { --dot: var(--text-muted); }

/* Matrix modal — wider than the detail card, its body scrolls. */
.tr-records-modal { max-width: 620px; }
.tr-records-head-titles { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.tr-records-head-sub { font-size: var(--text-xs); font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }

.tr-records-actionbar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 12px 20px; border-bottom: 1px solid var(--border);
}
.tr-records-summary { display: flex; align-items: baseline; gap: 6px; margin-right: auto; }
.tr-records-summary-big { font-family: var(--display); font-size: var(--text-lg); font-weight: 700; color: var(--text-primary); font-variant-numeric: tabular-nums; }
.tr-records-summary-lbl { font-size: var(--text-sm); color: var(--text-secondary); }
.tr-records-acts { display: flex; gap: 8px; flex-wrap: wrap; }
.tr-records-act { display: inline-flex; align-items: center; gap: 8px; }
.tr-records-act svg { width: 17px; height: 17px; }
.tr-records-imp-note { font-size: var(--text-xs); color: var(--text-muted); align-self: center; }
.tr-records-body { padding-top: 6px; }

/* Status groups (collapse — the Tasks month-folder pattern). */
.tr-rec-group { margin: 8px 0 6px; }
.tr-rec-group-head { display: flex; align-items: center; gap: 8px; }
.tr-rec-group-toggle {
  flex: 1 1 auto; min-width: 0;
  display: flex; align-items: center; gap: 8px;
  background: transparent; border: 0; padding: 8px 2px; cursor: pointer; text-align: left;
}
.tr-rec-chev { display: inline-grid; place-items: center; color: var(--text-muted); transition: transform 0.16s; }
.tr-rec-chev svg { width: 16px; height: 16px; }
.tr-rec-group-toggle[aria-expanded="false"] .tr-rec-chev { transform: rotate(-90deg); }
.tr-rec-group-label { font-size: var(--text-sm); font-weight: 700; color: var(--text-primary); display: inline-flex; align-items: center; gap: 7px; }
.tr-rec-group-label::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--dot, var(--text-muted)); flex: 0 0 auto; }
.tr-rec-group-count {
  font-size: var(--text-xs); font-weight: 700; color: var(--text-secondary);
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 999px; padding: 1px 8px;
}
.tr-rec-copy {
  flex: 0 0 auto; display: inline-flex; align-items: center; gap: 6px;
  background: transparent; border: 1px solid var(--border); border-radius: 999px;
  padding: 4px 10px; cursor: pointer; color: var(--text-secondary);
  font-size: var(--text-xs); font-weight: 600;
}
.tr-rec-copy:hover { border-color: var(--border-strong); color: var(--text-primary); }
.tr-rec-copy svg { width: 13px; height: 13px; }
.tr-rec-rows { display: flex; flex-direction: column; gap: 8px; padding: 2px 0 6px; }
.tr-rec-rows[hidden] { display: none; }   /* §6 — class sets display:flex */

.tr-rec-row {
  display: flex; align-items: center; gap: 12px; width: 100%; text-align: left;
  background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 10px 12px; cursor: pointer; transition: border-color 0.12s;
}
.tr-rec-row:hover { border-color: var(--border-strong); }
.tr-rec-av {
  flex: 0 0 auto; width: 32px; height: 32px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--bg-elevated); border: 1px solid var(--border);
  font-size: var(--text-xs); font-weight: 700; color: var(--text-secondary);
}
.tr-rec-main { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.tr-rec-name { font-weight: 600; font-size: var(--text-base); color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tr-rec-tag { font-size: var(--text-xs); font-weight: 700; color: var(--warning); text-transform: uppercase; letter-spacing: 0.03em; }
.tr-rec-sub { font-size: var(--text-xs); color: var(--text-muted); }

/* Practical note step. */
.tr-note-lead { margin: 0 0 10px; color: var(--text-secondary); font-size: var(--text-base); }
.tr-note-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.tr-note-chip {
  font-size: var(--text-xs); font-weight: 600; color: var(--text-secondary);
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 999px; padding: 3px 10px;
}

/* Per-person ledger (the SAR/EHO answer). */
.tr-ledger { display: flex; flex-direction: column; }
.tr-ledger-row { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--border); }
.tr-ledger-row:last-child { border-bottom: 0; }
.tr-ledger-dot { flex: 0 0 auto; width: 9px; height: 9px; border-radius: 50%; margin-top: 6px; background: var(--dot, var(--text-muted)); }
.tr-ledger-main { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.tr-ledger-course { font-weight: 600; font-size: var(--text-base); color: var(--text-primary); }
.tr-ledger-kind { font-size: var(--text-sm); font-weight: 600; }
.tr-ledger-kind-ok { color: var(--success); }
.tr-ledger-kind-warn { color: var(--warning); }
.tr-ledger-note { font-size: var(--text-sm); color: var(--text-secondary); font-style: italic; line-height: 1.45; }
.tr-ledger-meta { font-size: var(--text-xs); color: var(--text-muted); display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.tr-ledger-sep { opacity: 0.5; }
/* Per-record Certificate — a calm neutral icon button (§4: identifying colour on
   the icon only). ≥44px touch target, hover/focus parity for touch (§4). */
.tr-ledger-cert {
  flex: 0 0 auto; align-self: center;
  width: 40px; height: 40px; min-width: 40px; padding: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-md); color: var(--text-secondary);
  cursor: pointer; transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.tr-ledger-cert svg { width: 20px; height: 20px; }
.tr-ledger-cert:hover, .tr-ledger-cert:focus-visible { color: var(--accent); border-color: var(--accent); background: var(--bg-surface); }
.tr-ledger-cert:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (hover: none) { .tr-ledger-cert { color: var(--text-secondary); } }

/* "Lesson edited since staff confirmed" nudge (detail modal). */
.tr-edited-hint {
  display: flex; flex-direction: column; gap: 10px; align-items: flex-start;
  background: var(--warning-soft); border: 1px solid var(--warning);
  border-radius: var(--radius-md); padding: 12px 14px; margin: 0 0 14px;
}
.tr-edited-hint-text { color: var(--text-primary); font-size: var(--text-sm); line-height: 1.5; }
.tr-edited-hint-btn { align-self: stretch; }

/* ── Mobile full-width trims (§4 — ≤599px, AFTER the base rules) ─────── */
@media (max-width: 599px) {
  .tr-card-grid { grid-template-columns: 1fr; gap: 12px; }
  .tr-detail-row-label { flex-basis: 40%; }
  .tr-detail-foot .callout-btn { flex: 1 1 auto; }
  .tr-player-titlerow { padding-left: 12px; padding-right: 12px; }
  .tr-player-dots { padding-left: 12px; padding-right: 12px; }
  .tr-player-cover-title { font-size: var(--text-lg); }
  .tr-player-confirm-title { font-size: var(--text-lg); }
  .tr-records-actionbar { padding-left: 14px; padding-right: 14px; }
  .tr-records-acts { width: 100%; }
  .tr-records-acts .callout-btn { flex: 1 1 auto; }
  .tr-edited-hint-btn { width: 100%; }
}