/* Learn tab: course cards, lesson player, and the floating coach panel.
   Leans entirely on the app's existing tokens (styles.css :root vars). */

/* ---------- Dashboard nudge ---------- */

.app-frame .learn-nudge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--s4);
  margin-top: var(--s5);
  padding: var(--s4) var(--s5);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--accent-soft);
}

.app-frame .learn-nudge span {
  display: block;
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 14px;
}

.app-frame .learn-nudge-actions {
  display: flex;
  align-items: center;
  gap: var(--s4);
}

/* ---------- Course list ---------- */

.app-frame .learn-course {
  margin-top: var(--s5);
  padding: var(--s5);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow-sm);
}

.app-frame .learn-course h2 {
  margin: 0;
  font-size: 20px;
}

.app-frame .learn-course-tagline {
  margin: var(--s1) 0 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.app-frame .learn-progress-track {
  height: 6px;
  margin-top: var(--s3);
  border-radius: 3px;
  background: var(--rule);
  overflow: hidden;
}

.app-frame .learn-progress-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--gold-deep);
  transition: width 0.25s ease;
}

.app-frame .learn-lessons {
  margin: var(--s4) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.app-frame .learn-lesson-row {
  display: flex;
  align-items: center;
  gap: var(--s3);
  width: 100%;
  padding: var(--s3) var(--s2);
  border: 0;
  border-bottom: 1px solid var(--rule);
  background: none;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background 0.12s ease;
}

.app-frame .learn-lesson-row:hover {
  background: rgba(24, 47, 47, 0.03);
}

.app-frame .learn-lesson-state {
  width: 22px;
  flex: none;
  text-align: center;
  color: var(--slate);
}

.app-frame .learn-lesson-state.done {
  color: var(--gold-deep);
}

.app-frame .learn-lesson-title {
  font-weight: 600;
}

.app-frame .learn-lesson-goal {
  color: var(--slate);
  font-size: 13px;
}

.app-frame .learn-lesson-minutes {
  margin-left: auto;
  flex: none;
  color: var(--slate);
  font-size: 12px;
}

/* ---------- The syllabus: parts and the Part I table of contents ---------- */

.app-frame .learn-part {
  margin-top: var(--s6);
}

.app-frame .learn-part-head {
  display: flex;
  align-items: baseline;
  gap: var(--s3);
}

.app-frame .learn-part-head h2 {
  margin: 0;
}

.app-frame .learn-part-numeral {
  flex: none;
  color: var(--gold-deep);
  font-size: 11px;
  letter-spacing: 0.18em;
}

.app-frame .learn-part-note {
  margin: var(--s1) 0 0;
  color: var(--slate);
  font-size: 13px;
}

.app-frame .learn-tag {
  flex: none;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.app-frame .learn-tag.is-progress {
  color: var(--navy);
  background: rgba(37, 77, 121, 0.09);
}

.app-frame .learn-tag.is-writing {
  color: var(--slate);
  border: 1px solid var(--rule);
}

.app-frame .learn-tag.is-optional {
  color: var(--slate);
  border: 1px solid var(--rule);
}

.app-frame .learn-toc {
  margin: var(--s3) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule);
}

.app-frame .learn-toc-row {
  display: flex;
  align-items: center;
  gap: var(--s4);
  width: 100%;
  padding: var(--s3) var(--s2);
  border: 0;
  border-bottom: 1px solid var(--rule);
  background: none;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background 0.12s ease;
}

.app-frame button.learn-toc-row:hover {
  background: rgba(191, 223, 223, 0.35);
}

.app-frame .learn-toc-row.is-queued {
  cursor: default;
}

.app-frame .learn-toc-row.is-queued .learn-toc-title {
  color: var(--slate);
  font-weight: 500;
}

.app-frame .learn-toc-num {
  width: 22px;
  flex: none;
  text-align: center;
  color: var(--slate);
  font-size: 12px;
}

.app-frame .learn-toc-num.done {
  color: var(--gain);
  font-weight: 600;
}

.app-frame .learn-toc-title {
  font-weight: 600;
}

.app-frame .learn-toc-goal {
  color: var(--slate);
  font-size: 13px;
}

.app-frame .learn-toc-meta {
  margin-left: auto;
  flex: none;
  color: var(--slate);
  font-size: 10.5px;
  letter-spacing: 0.08em;
}

.app-frame .learn-toc-row .learn-tag {
  margin-left: var(--s2);
}

.app-frame .learn-part-fold {
  margin-top: var(--s3);
  border-top: 1px solid var(--rule);
}

/* ---------- Sectioned player (Part I) ---------- */

/* Doubled class: .learn-step's own cap sits later in the file at the same
   specificity, and the player card must beat it to span the full screen. */
.app-frame .learn-step.learn-section-card {
  max-width: none;
}

.app-frame .learn-section-top {
  display: flex;
  align-items: center;
  gap: var(--s3);
}

.app-frame .learn-section-kicker {
  color: var(--slate);
  font-size: 10.5px;
  letter-spacing: 0.16em;
}

.app-frame .learn-chip {
  margin-left: auto;
  flex: none;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
}

.app-frame .learn-chip.is-lesson {
  color: #fff;
  background: var(--navy);
}

.app-frame .learn-chip.is-check,
.app-frame .learn-chip.is-done {
  color: var(--gold-deep);
  background: var(--accent-soft);
}

.app-frame .learn-section-grid {
  display: flex;
  gap: var(--s6);
  margin-top: var(--s4);
}

.app-frame .learn-rail {
  flex: none;
  width: 210px;
}

.app-frame .learn-rail-item {
  display: flex;
  gap: var(--s2);
  align-items: baseline;
  padding: var(--s2) 0;
  border-bottom: 1px solid var(--rule);
  color: var(--slate);
  font-size: 13px;
  line-height: 1.4;
}

.app-frame .learn-rail-item.now {
  color: var(--ink);
  font-weight: 600;
}

.app-frame .learn-rail-num {
  flex: none;
  width: 16px;
  font-size: 10.5px;
}

.app-frame .learn-rail-item.done .learn-rail-num {
  color: var(--gain);
}

.app-frame .learn-rail-item.now .learn-rail-num {
  color: var(--navy);
  font-weight: 600;
}

.app-frame .learn-section-body {
  flex: 1;
  min-width: 0;
}

.app-frame .learn-section-title {
  margin: 0;
  font-size: 22px;
}

.app-frame .learn-prose {
  margin: var(--s3) 0 0;
  max-width: 100ch;
  color: var(--ink-soft);
  line-height: 1.66;
}

.app-frame .learn-prose .mono {
  font-size: 0.92em;
}

.app-frame .learn-aside {
  margin-top: var(--s4);
  max-width: 100ch;
  padding: var(--s3) var(--s4);
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  color: var(--gold-deep);
  font-size: 14px;
  line-height: 1.6;
}

.app-frame .learn-aside b {
  color: var(--gold-deep);
}

.app-frame .learn-section-foot {
  display: flex;
  align-items: center;
  gap: var(--s4);
  margin-top: var(--s5);
  padding-top: var(--s4);
  border-top: 1px solid var(--rule);
}

.app-frame .learn-section-foot .primary-button {
  margin-left: auto;
}

.app-frame .learn-foot-note {
  color: var(--slate);
  font-size: 10.5px;
  letter-spacing: 0.1em;
}

/* The worked table — a small ledger; the toll gets the double-rule total. */

.app-frame .learn-worked {
  margin-top: var(--s4);
  max-width: 480px;
  padding: var(--s3) var(--s4);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  background: #fff;
}

.app-frame .learn-worked-label {
  color: var(--slate);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.app-frame .learn-worked-row {
  display: flex;
  align-items: baseline;
  gap: var(--s4);
  padding: var(--s2) 0;
  border-bottom: 1px solid var(--rule);
  font-size: 14px;
  color: var(--ink-soft);
}

.app-frame .learn-worked-row b {
  display: block;
  color: var(--ink);
  font-size: 14.5px;
}

.app-frame .learn-worked-sub {
  display: block;
  color: var(--slate);
  font-size: 12.5px;
}

.app-frame .learn-worked-value {
  margin-left: auto;
  font-weight: 600;
  font-size: 16px;
  color: var(--ink);
}

.app-frame .learn-worked-toll {
  display: flex;
  align-items: center;
  gap: var(--s4);
  padding-top: var(--s3);
  color: var(--slate);
  font-size: 13px;
}

.app-frame .learn-worked-total {
  margin-left: auto;
  padding: 2px 7px 3px;
  border-top: 1px solid var(--gold-deep);
  border-bottom: 3px double var(--gold-deep);
  color: var(--loss);
  font-weight: 600;
  font-size: 18px;
}

/* Mastery checks */

.app-frame .learn-check-kicker {
  color: var(--slate);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.app-frame .learn-check-q {
  margin: var(--s2) 0 0;
  font-size: 20px;
  line-height: 1.3;
}

.app-frame .learn-opts {
  display: flex;
  flex-direction: column;
  gap: var(--s2);
  margin-top: var(--s4);
}

.app-frame .learn-opt {
  display: flex;
  align-items: center;
  gap: var(--s3);
  padding: var(--s3) var(--s4);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  background: #fff;
  font: inherit;
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink-soft);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, opacity 0.3s;
}

.app-frame .learn-opt:hover:not(:disabled) {
  border-color: var(--navy);
}

.app-frame .learn-opt:disabled {
  cursor: default;
}

.app-frame .learn-opt-key {
  flex: none;
  width: 23px;
  height: 23px;
  border: 1px solid var(--rule);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--slate);
  font-size: 11px;
}

.app-frame .learn-opt.is-right {
  background: rgba(21, 107, 63, 0.06);
  border-color: var(--gain);
  color: var(--ink);
}

.app-frame .learn-opt.is-right .learn-opt-key {
  background: var(--gain);
  border-color: var(--gain);
  color: #fff;
}

.app-frame .learn-opt.is-wrong {
  background: rgba(168, 64, 47, 0.05);
  border-color: rgba(168, 64, 47, 0.55);
}

.app-frame .learn-opt.is-wrong .learn-opt-key {
  background: var(--loss);
  border-color: var(--loss);
  color: #fff;
}

.app-frame .learn-opt.is-gone {
  display: none;
}

.app-frame .learn-patch {
  margin-top: var(--s4);
  max-width: 100ch;
  padding: var(--s3) var(--s4);
  border-left: 3px solid var(--gold-deep);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--card-2);
}

.app-frame .learn-patch-kicker {
  color: var(--gold-deep);
  font-size: 10px;
  letter-spacing: 0.16em;
}

.app-frame .learn-patch p {
  margin: var(--s2) 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.62;
}

.app-frame .learn-reask {
  margin-top: var(--s4);
}

.app-frame .learn-reask-q {
  margin: 0;
  font-weight: 600;
  font-size: 15px;
}

.app-frame .learn-verdict {
  margin: var(--s3) 0 0;
  max-width: 100ch;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.6;
}

.app-frame .learn-verdict-mark {
  color: var(--gain);
  font-weight: 600;
}

/* Lesson close */

.app-frame .learn-close-head {
  margin: var(--s4) 0 0;
  font-size: 24px;
}

.app-frame .learn-close-list {
  margin-top: var(--s3);
  max-width: 100ch;
  border-top: 1px solid var(--rule);
}

.app-frame .learn-close-row {
  display: flex;
  gap: var(--s3);
  align-items: baseline;
  padding: var(--s3) 2px;
  border-bottom: 1px solid var(--rule);
}

.app-frame .learn-close-mark {
  flex: none;
  color: var(--gain);
  font-weight: 600;
}

.app-frame .learn-close-q {
  display: block;
  font-weight: 600;
  font-size: 14.5px;
}

.app-frame .learn-close-a {
  display: block;
  margin-top: 2px;
  color: var(--slate);
  font-size: 13.5px;
  line-height: 1.5;
}

.app-frame .learn-close-score {
  margin: var(--s4) 0 0;
  color: var(--slate);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.app-frame .learn-close-score b {
  color: var(--gain);
  font-weight: 600;
}

.app-frame .learn-close-note {
  margin: var(--s2) 0 0;
  color: var(--gold-deep);
  font-family: var(--font-display);
  font-style: italic;
  font-size: 16px;
}

/* Sectioned player, small screens: the rail becomes a compact strip. */

@media (max-width: 720px) {
  .app-frame .learn-section-grid {
    flex-direction: column;
    gap: var(--s4);
  }

  .app-frame .learn-rail {
    display: flex;
    width: auto;
    gap: var(--s3);
    overflow-x: auto;
    padding-bottom: var(--s1);
  }

  .app-frame .learn-rail-item {
    flex: none;
    border-bottom: 0;
    padding: 0;
  }

  .app-frame .learn-rail-item span:last-child {
    display: none;
  }

  .app-frame .learn-rail-item.now span:last-child {
    display: inline;
  }

  .app-frame .learn-toc-meta {
    display: none;
  }
}

/* ---------- Lesson player ---------- */

.app-frame .learn-player-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s4);
  margin-top: var(--s4);
}

.app-frame .learn-player-head h2 {
  margin: 0;
}

.app-frame .learn-dots {
  display: flex;
  gap: 6px;
}

.app-frame .learn-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--rule);
}

.app-frame .learn-dot.done {
  background: var(--gold-deep);
}

.app-frame .learn-dot.now {
  background: var(--navy);
}

.app-frame .learn-step {
  max-width: 100ch;
  margin-top: var(--s5);
  padding: var(--s5);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow-sm);
}

.app-frame .learn-step h3 {
  margin: 0 0 var(--s3);
}

.app-frame .learn-step p {
  margin: 0 0 var(--s3);
  color: var(--ink-soft);
  line-height: 1.65;
}

.app-frame .learn-step-actions {
  display: flex;
  align-items: center;
  gap: var(--s4);
  margin-top: var(--s4);
}

.app-frame .learn-check-option {
  display: flex;
  align-items: center;
  gap: var(--s3);
  padding: var(--s3) var(--s2);
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
}

.app-frame .learn-check-result {
  margin-top: var(--s3);
  font-size: 14px;
}

.app-frame .learn-check-result.good {
  color: var(--gold-deep);
  font-weight: 600;
}

.app-frame .learn-done-card {
  text-align: left;
}

/* ---------- Coach panel (fixed, survives tab switches) ---------- */

.learn-coach {
  position: fixed;
  right: var(--s5);
  bottom: var(--s5);
  z-index: 60;
  width: 340px;
  max-width: calc(100vw - 2 * var(--s5));
  padding: var(--s4) var(--s5);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
}

.learn-coach-head {
  display: flex;
  align-items: baseline;
  gap: var(--s3);
}

.learn-coach-kicker {
  color: var(--gold-deep);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#learnCoachLesson {
  font-weight: 600;
  font-size: 14px;
}

#learnCoachExit {
  margin-left: auto;
}

.learn-coach p {
  margin: var(--s3) 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.55;
}

.learn-coach-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s4);
  margin-top: var(--s4);
}

.learn-coach-status {
  margin: var(--s3) 0 0;
  color: var(--slate);
  font-size: 13px;
}

.learn-coach-status.is-error {
  color: #a8402f;
}

/* ---------- Highlight for "look" steps ---------- */

.learn-highlight {
  outline: 2px solid var(--gold-deep);
  outline-offset: 4px;
  border-radius: 4px;
  animation: learn-pulse 1.6s ease-in-out 3;
}

@keyframes learn-pulse {
  0%, 100% { outline-color: var(--gold-deep); }
  50% { outline-color: transparent; }
}