:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: light dark;
  line-height: 1.5;
  --surface: Canvas;
  --text: CanvasText;
  --soft: color-mix(in srgb, CanvasText 7%, transparent);
  --border: color-mix(in srgb, CanvasText 18%, transparent);
  --accent: LinkText;
  --success: #167447;
  --danger: #a22b2b;
}

* {
  box-sizing: border-box;
}

button,
input,
select,
textarea {
  font: inherit;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-bottom: calc(6.5rem + env(safe-area-inset-bottom));
}

body {
  overflow-x: hidden;
  overscroll-behavior-y: contain;
}

body {
  margin: 0;
  min-height: 100vh;
  padding: 1rem;
  background: var(--surface);
  color: var(--text);
}

main {
  width: min(100%, 760px);
  margin: 0 auto;
}

.lesson-shell {
  padding: clamp(1rem, 4vw, 2rem);
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  background: color-mix(in srgb, Canvas 95%, CanvasText 5%);
  box-shadow: 0 1rem 2.5rem color-mix(in srgb, CanvasText 10%, transparent);
}

.lesson-header {
  margin-bottom: 1.25rem;
}

.eyebrow,
.exercise-type {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  opacity: 0.68;
}

h1,
h2,
p {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  line-height: 1.08;
}

.lesson-subtitle {
  margin: 0.65rem 0 0;
  opacity: 0.78;
}

.lesson-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 1.2rem 0;
}

.summary-item {
  min-width: 0;
  padding: 0.8rem;
  border-radius: 0.85rem;
  background: var(--soft);
  text-align: center;
  font-size: 0.9rem;
}

.objective-box,
.exercise-card,
.completion-card {
  margin: 1rem 0;
  padding: 1.15rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: color-mix(in srgb, Canvas 97%, CanvasText 3%);
}

.objective-box h2,
.exercise-card h2,
.completion-card h2 {
  margin-top: 0;
}

.exercise-top-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.86rem;
  opacity: 0.78;
}

.progress-track {
  height: 0.55rem;
  margin: 0.7rem 0 1.1rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--soft);
}

.progress-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transition: width 180ms ease;
}

.exercise-instruction {
  line-height: 1.3;
}

.option-list {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
}

.option-button {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface);
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.option-button:hover:not(:disabled),
.option-button.selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
}

.option-button.correct-option {
  border-color: var(--success);
}

.option-button.incorrect-option {
  border-color: var(--danger);
}

.button {
  min-height: 2.8rem;
  padding: 0.72rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  cursor: pointer;
}

.button:disabled,
.option-button:disabled {
  cursor: default;
  opacity: 0.65;
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: Canvas;
  font-weight: 720;
}

.button-secondary {
  background: var(--surface);
  color: var(--text);
}

.lesson-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.lesson-actions .button-primary {
  margin-left: auto;
}

.hint-box,
.feedback-box {
  margin-top: 1rem;
  padding: 0.9rem;
  border-radius: 0.85rem;
}

.hint-box {
  background: var(--soft);
}

.feedback-correct {
  border: 1px solid var(--success);
}

.feedback-error {
  border: 1px solid var(--danger);
}

.feedback-box p:last-child {
  margin-bottom: 0;
}

.feedback-progress,
.completion-score {
  font-weight: 700;
}

.completion-card {
  text-align: center;
}

.completion-icon {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 0.75rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--success);
  color: white;
  font-size: 1.5rem;
  font-weight: 800;
}

.error-card {
  margin-top: 2rem;
}

@media (max-width: 600px) {
  body {
    padding: 0.65rem;
  }

  .lesson-shell {
    border-radius: 1rem;
  }

  .lesson-summary {
    grid-template-columns: 1fr;
  }

  .exercise-top-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.2rem;
  }

  .lesson-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .lesson-actions .button-primary {
    margin-left: 0;
  }
}

.exercise-preview {
  margin: 1rem 0 1.35rem;
  padding-left: 1.25rem;
}

.exercise-preview li + li {
  margin-top: 0.35rem;
}

.answer-field {
  width: 100%;
  min-height: 3rem;
  margin-top: 1rem;
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface);
  color: var(--text);
  resize: vertical;
}

.answer-field:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 65%, transparent);
  outline-offset: 2px;
}

.ordering-wrapper {
  display: grid;
  gap: 0.85rem;
  margin-top: 1rem;
}

.ordered-answer {
  min-height: 3.25rem;
  padding: 0.85rem;
  border: 1px dashed var(--border);
  border-radius: 0.85rem;
  background: var(--soft);
}

.token-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.token-button,
.mini-button {
  padding: 0.62rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

.token-button:disabled {
  opacity: 0.38;
}

.ordering-controls {
  display: flex;
  gap: 0.55rem;
}

.dialogue-context {
  margin: 0.8rem 0 0;
  padding: 0.85rem;
  border-left: 0.3rem solid var(--accent);
  border-radius: 0.4rem 0.8rem 0.8rem 0.4rem;
  background: var(--soft);
}

.dialogue-context p {
  margin: 0.3rem 0 0;
}

.completion-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 1rem 0;
}

@media (max-width: 600px) {
  .completion-grid {
    grid-template-columns: 1fr;
  }

  .token-button,
  .mini-button {
    min-height: 2.75rem;
  }
}

:root.dark-theme {
  color-scheme: dark;
}

:root.reduced-motion *,
:root.reduced-motion *::before,
:root.reduced-motion *::after {
  scroll-behavior: auto !important;
  transition: none !important;
  animation: none !important;
}

.app-shell {
  min-height: calc(100vh - 2rem);
  padding-bottom: 5.5rem;
}

.app-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 0.75rem 0.25rem;
}

.brand-kicker {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.65;
}

.brand-title {
  margin: 0.15rem 0 0;
  font-size: clamp(1.2rem, 4vw, 1.75rem);
}

.version-badge,
.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 1.9rem;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  background: var(--soft);
  font-size: 0.78rem;
  font-weight: 700;
}

.status-pill.subtle {
  opacity: 0.75;
}

.app-content {
  display: grid;
  gap: 1rem;
}

.screen-heading h2 {
  margin: 0;
  font-size: clamp(1.55rem, 5vw, 2.15rem);
}

.screen-heading p {
  margin: 0.35rem 0 0;
  opacity: 0.72;
}

.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: 0.7rem;
  z-index: 20;
  width: min(calc(100% - 1.2rem), 760px);
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.25rem;
  padding: 0.45rem;
  border: 1px solid var(--border);
  border-radius: 1.15rem;
  background: color-mix(in srgb, Canvas 92%, transparent);
  backdrop-filter: blur(16px);
  box-shadow: 0 0.7rem 2rem color-mix(in srgb, CanvasText 14%, transparent);
}

.nav-button {
  min-width: 0;
  min-height: 3.7rem;
  padding: 0.35rem 0.2rem;
  border: 0;
  border-radius: 0.85rem;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.nav-button.active {
  background: color-mix(in srgb, var(--accent) 13%, var(--surface));
  color: var(--accent);
}

.nav-icon,
.nav-label {
  display: block;
}

.nav-icon {
  font-size: 1.1rem;
  font-weight: 800;
}

.nav-label {
  margin-top: 0.15rem;
  font-size: 0.7rem;
}

.hero-card,
.panel-card,
.practice-card,
.unit-card {
  padding: 1.15rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: color-mix(in srgb, Canvas 97%, CanvasText 3%);
}

.hero-card h3,
.panel-card h3,
.practice-card h3,
.unit-card h3 {
  margin: 0.15rem 0 0.5rem;
}

.hero-card p,
.panel-card p,
.practice-card p,
.unit-card p {
  margin-top: 0.35rem;
}

.hero-meta,
.unit-meta,
.panel-row {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
}

.hero-meta,
.unit-meta {
  margin: 1rem 0;
  font-size: 0.84rem;
  opacity: 0.75;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.stat-card {
  min-width: 0;
  padding: 0.95rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: color-mix(in srgb, Canvas 97%, CanvasText 3%);
}

.stat-label,
.stat-hint {
  display: block;
}

.stat-label {
  font-size: 0.78rem;
  opacity: 0.7;
}

.stat-value {
  display: block;
  margin: 0.2rem 0;
  font-size: 1.45rem;
}

.stat-hint {
  font-size: 0.72rem;
  opacity: 0.65;
}

.quick-actions,
.practice-grid,
.state-grid,
.progress-list,
.micro-list {
  display: grid;
  gap: 0.7rem;
}

.quick-actions {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0.8rem;
}

.practice-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.practice-card {
  display: flex;
  flex-direction: column;
}

.practice-card .button {
  margin-top: auto;
}

.unit-card {
  margin-top: 1rem;
}

.micro-list {
  margin: 1rem 0;
}

.micro-row,
.progress-row,
.state-row,
.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.78rem 0;
  border-bottom: 1px solid var(--border);
}

.micro-row:last-child,
.progress-row:last-child,
.state-row:last-child,
.setting-row:last-child {
  border-bottom: 0;
}

.micro-row span,
.progress-row span,
.setting-row small {
  display: block;
  font-size: 0.76rem;
  opacity: 0.68;
}

.score-badge {
  min-width: 3.4rem;
  padding: 0.35rem 0.55rem;
  border-radius: 0.7rem;
  background: var(--soft);
  text-align: center;
  font-weight: 750;
}

.setting-row {
  cursor: pointer;
}

.setting-control {
  max-width: 14rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--text);
}

.setting-toggle {
  width: 1.25rem;
  height: 1.25rem;
}

.muted-card {
  opacity: 0.8;
}

.button-danger {
  border-color: #a22b2b;
  background: #a22b2b;
  color: white;
}

.lesson-header-with-exit {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.compact-button {
  min-height: 2.35rem;
  padding: 0.45rem 0.75rem;
}

@media (max-width: 720px) {
  .practice-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .bottom-nav {
    bottom: 0.35rem;
  }
}

@media (max-width: 520px) {
  .app-shell {
    min-height: calc(100vh - 1.3rem);
  }

  .brand-kicker {
    display: none;
  }

  .quick-actions {
    grid-template-columns: 1fr;
  }

  .nav-label {
    font-size: 0.64rem;
  }

  .setting-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .setting-control {
    width: 100%;
    max-width: none;
  }

  .lesson-header-with-exit {
    align-items: stretch;
    flex-direction: column;
  }

  .compact-button {
    align-self: flex-start;
  }
}

.adaptive-banner,
.unlock-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.95rem;
  background: color-mix(in srgb, var(--accent) 7%, var(--surface));
}

.adaptive-banner p,
.unlock-box p {
  margin: 0.25rem 0 0;
  opacity: 0.75;
}

.error-list,
.roadmap-list {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
}

.error-row,
.roadmap-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(9rem, 0.7fr);
  gap: 1rem;
  align-items: start;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface);
}

.error-row span,
.roadmap-row span,
.error-detail small {
  display: block;
  font-size: 0.76rem;
  opacity: 0.7;
}

.error-detail {
  display: grid;
  gap: 0.35rem;
}

.empty-state {
  padding: 1rem;
  border-radius: 0.8rem;
  background: var(--soft);
  opacity: 0.75;
}

.unlock-box {
  display: block;
  margin-top: 1rem;
}

.roadmap-row.locked {
  opacity: 0.55;
}

.roadmap-row.completed {
  border-color: var(--success);
}

.roadmap-row.available {
  border-color: var(--accent);
}

.lesson-summary {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 650px) {
  .error-row,
  .roadmap-row {
    grid-template-columns: 1fr;
  }

  .lesson-summary {
    grid-template-columns: 1fr 1fr;
  }

  .adaptive-banner {
    align-items: flex-start;
    flex-direction: column;
  }
}

.audio-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0.85rem 0;
}

.bionic-lead {
  font-weight: 800;
}

.memory-lab-shell {
  max-width: 720px;
  margin: 0 auto;
}

.memory-card {
  padding: clamp(1rem, 4vw, 1.5rem);
  border: 1px solid var(--border);
  border-radius: 1.1rem;
  background: color-mix(in srgb, Canvas 97%, CanvasText 3%);
}

.memory-prompt {
  margin: 1rem 0;
  font-size: clamp(1.4rem, 5vw, 2.1rem);
}

.memory-hint,
.association-box,
.example-box {
  margin: 0.85rem 0;
  padding: 0.9rem;
  border-radius: 0.85rem;
  background: var(--soft);
}

.association-box p,
.example-box p {
  margin-bottom: 0;
}

.memory-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.6rem;
  margin: 1rem 0;
}

.button-quiet {
  min-height: 2.4rem;
  padding: 0.5rem 0.7rem;
  border: 0;
  background: transparent;
  color: var(--accent);
  text-decoration: underline;
  cursor: pointer;
}

:root[data-text-size="small"] {
  font-size: 14px;
}

:root[data-text-size="medium"] {
  font-size: 16px;
}

:root[data-text-size="large"] {
  font-size: 18px;
}

:root[data-text-size="extra_large"] {
  font-size: 21px;
}

:root.high-contrast {
  --border: color-mix(in srgb, CanvasText 52%, transparent);
  --soft: color-mix(in srgb, CanvasText 15%, transparent);
}

:root.high-contrast .button,
:root.high-contrast .option-button,
:root.high-contrast .panel-card,
:root.high-contrast .hero-card,
:root.high-contrast .practice-card,
:root.high-contrast .unit-card {
  border-width: 2px;
}

:root.enhanced-focus :focus-visible {
  outline: 4px solid var(--accent);
  outline-offset: 3px;
}

@media (max-width: 650px) {
  .memory-actions {
    grid-template-columns: 1fr 1fr;
  }
}

.pwa-status {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0.8rem 0 1rem;
  padding: 0.85rem;
  border-radius: 0.85rem;
  background: var(--soft);
}

.connection-dot {
  flex: 0 0 auto;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
}

.connection-dot.online {
  background: var(--success);
}

.connection-dot.offline {
  background: #ba7a00;
}

.data-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.data-status {
  margin-top: 0.85rem;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
}

.data-status.success {
  border-color: var(--success);
}

.data-status.error {
  border-color: var(--danger);
}

.data-status.info {
  background: var(--soft);
}

noscript {
  display: block;
  max-width: 760px;
  margin: 1rem auto;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
}

@media (max-width: 520px) {
  .data-actions {
    display: grid;
    grid-template-columns: 1fr;
  }
}

.course-unit-list {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.course-unit-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
}

.course-unit-card.active-unit {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, var(--surface));
}

.course-unit-card.locked {
  opacity: 0.55;
}

.course-unit-card.completed {
  border-color: var(--success);
}

.course-unit-text h3 {
  margin: 0.1rem 0 0.35rem;
}

.course-unit-text > p {
  margin: 0.35rem 0;
}

.course-unit-meta {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  opacity: 0.72;
}

.course-unit-actions {
  display: grid;
  gap: 0.5rem;
  min-width: 9.5rem;
}

.active-unit-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 0.95rem;
  background: color-mix(in srgb, var(--accent) 6%, var(--surface));
}

.active-unit-banner p {
  margin: 0.25rem 0 0;
  opacity: 0.75;
}

@media (max-width: 650px) {
  .course-unit-card {
    grid-template-columns: 1fr;
  }

  .course-unit-actions {
    min-width: 0;
  }

  .active-unit-banner {
    align-items: flex-start;
    flex-direction: column;
  }
}


.pronunciation-panel {
  margin: 0.9rem 0;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--soft);
}

.pronunciation-panel.compact {
  padding: 0.7rem;
}

.pronunciation-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.pronunciation-heading small,
.audio-status,
.audio-compatibility small {
  opacity: 0.72;
}

.audio-status {
  min-height: 1.25rem;
  margin: 0.35rem 0 0;
  font-size: 0.86rem;
}

.audio-compatibility {
  display: grid;
  gap: 0.25rem;
  margin: 0.9rem 0;
  padding: 0.85rem;
  border-radius: 0.85rem;
  background: var(--soft);
}

.audio-compatibility p,
.audio-compatibility small {
  margin: 0;
}

.audio-test-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.85rem;
}

@media (max-width: 650px) {
  .pronunciation-panel .audio-controls,
  .audio-test-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pronunciation-panel .mini-button,
  .audio-test-actions .button {
    width: 100%;
  }
}


.listening-privacy-note,
.shadowing-assessment {
  display: grid;
  gap: 0.55rem;
  margin: 0.9rem 0;
  padding: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--soft);
}

.listening-privacy-note p,
.shadowing-assessment p {
  margin: 0;
}

.listening-card .pronunciation-panel {
  margin-top: 1rem;
}

.listening-instruction,
.listening-replay-count {
  opacity: 0.78;
}

.listening-replay-count {
  margin: 0.3rem 0 0.8rem;
  font-size: 0.88rem;
  font-weight: 700;
}

.listening-dictation {
  min-height: 7rem;
}

.shadowing-text {
  margin: 0.4rem 0;
  padding: 0.85rem 1rem;
  border-left: 0.3rem solid var(--primary);
  background: var(--surface);
  font-size: 1.1rem;
  font-weight: 700;
}

.shadowing-translation {
  opacity: 0.78;
}

.shadowing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

@media (max-width: 650px) {
  .shadowing-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .shadowing-actions .button {
    width: 100%;
  }
}


.listening-priority-card {
  display: grid;
  gap: 0.8rem;
}

.listening-priority-list {
  display: grid;
  gap: 0.65rem;
}

.listening-priority-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: var(--soft);
}

.listening-priority-row > div {
  display: grid;
  gap: 0.25rem;
}

.listening-priority-row span:not(.status-pill) {
  opacity: 0.76;
  font-size: 0.9rem;
}

.listening-focus-label {
  display: inline-flex;
  width: fit-content;
  margin: 0.2rem 0 0.55rem;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  background: var(--soft);
  font-size: 0.82rem;
  font-weight: 750;
}

@media (max-width: 650px) {
  .listening-priority-row {
    align-items: flex-start;
    flex-direction: column;
  }
}


.listening-review-agenda {
  display: grid;
  gap: 0.85rem;
}

.feedback-review-date {
  margin: 0.35rem 0 0;
  font-weight: 750;
}

.pronunciation-panel button[hidden] {
  display: none;
}


.auditory-progress-row .score-badge {
  min-width: 9.5rem;
  text-align: center;
}
.auditory-sufficient { font-weight: 800; }
.auditory-review { border-style: dashed; }
.auditory-not_started,
.auditory-developing { opacity: 0.82; }
@media (max-width: 650px) {
  .auditory-progress-row {
    align-items: flex-start;
    flex-direction: column;
  }
  .auditory-progress-row .score-badge {
    min-width: 0;
    width: 100%;
  }
}


.analytics-range-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.7rem;
}

.analytics-range-selector .selected {
  border-width: 2px;
  font-weight: 800;
}

.analytics-period-summary,
.analytics-global-stats {
  margin-top: 0.8rem;
}

.analytics-bar-chart {
  height: 12rem;
  display: flex;
  align-items: flex-end;
  gap: 0.25rem;
  margin-top: 1rem;
  padding: 0.75rem 0.5rem 0;
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.analytics-bar-column {
  min-width: 0.8rem;
  height: 100%;
  flex: 1 0 0.8rem;
  display: grid;
  grid-template-rows: 1fr auto;
  align-items: end;
  gap: 0.3rem;
  text-align: center;
}

.analytics-bar {
  width: 100%;
  min-height: 0.15rem;
  display: block;
  border-radius: 0.35rem 0.35rem 0 0;
  background: var(--primary);
}

.analytics-bar-column small {
  min-height: 1rem;
  font-size: 0.65rem;
  opacity: 0.68;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.analytics-history-note,
.analytics-data-note {
  margin: 0.8rem 0 0;
  opacity: 0.72;
  font-size: 0.88rem;
}

.analytics-skill-grid {
  display: grid;
  grid-template-columns: repeat(
    auto-fit,
    minmax(15rem, 1fr)
  );
  gap: 0.8rem;
  margin-top: 0.9rem;
}

.analytics-skill-card {
  display: grid;
  gap: 0.55rem;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--soft);
}

.analytics-skill-card p,
.analytics-recommendation p {
  margin: 0;
}

.analytics-skill-heading,
.analytics-grade-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}

.analytics-meter {
  height: 0.55rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.analytics-meter-fill {
  height: 100%;
  display: block;
  border-radius: inherit;
  background: var(--primary);
}

.analytics-mini-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.35rem;
  font-size: 0.82rem;
}

.analytics-skill-status {
  font-weight: 750;
}

.analytics-insights-grid {
  display: grid;
  grid-template-columns: repeat(
    2,
    minmax(0, 1fr)
  );
  gap: 0.9rem;
}

.analytics-data-note {
  grid-column: 1 / -1;
}

.analytics-insight-list,
.analytics-recommendations,
.analytics-grade-list {
  display: grid;
  gap: 0.65rem;
  margin-top: 0.75rem;
}

.analytics-insight-row,
.analytics-recommendation,
.analytics-grade-row {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: var(--soft);
}

.analytics-insight-row {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  align-items: center;
}

.analytics-insight-row > div {
  display: grid;
  gap: 0.25rem;
}

.analytics-insight-row span:not(.score-badge) {
  font-size: 0.87rem;
  opacity: 0.75;
}

.analytics-recommendation {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
}

.analytics-priority-number {
  width: 1.8rem;
  height: 1.8rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--primary);
  color: var(--background);
  font-weight: 800;
}

.analytics-grade-row {
  display: grid;
  gap: 0.7rem;
}

.analytics-grade-bars {
  display: grid;
  grid-template-columns: repeat(
    3,
    minmax(0, 1fr)
  );
  gap: 0.7rem;
}

.analytics-grade-bar {
  display: grid;
  gap: 0.3rem;
  font-size: 0.82rem;
}

.analytics-empty {
  margin: 0.75rem 0 0;
  opacity: 0.75;
}

@media (max-width: 760px) {
  .analytics-insights-grid,
  .analytics-grade-bars {
    grid-template-columns: 1fr;
  }

  .analytics-period-summary {
    grid-template-columns: repeat(
      2,
      minmax(0, 1fr)
    );
  }
}

@media (max-width: 480px) {
  .analytics-period-summary,
  .analytics-mini-grid {
    grid-template-columns: 1fr;
  }

  .analytics-insight-row {
    align-items: flex-start;
    flex-direction: column;
  }
}


.adaptive-hero {
  display: grid;
  gap: 0.8rem;
}

.weekly-goal-card {
  display: grid;
  gap: 0.95rem;
}

.weekly-goal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.weekly-goal-header h3,
.weekly-goal-header p {
  margin-top: 0;
}

.weekly-goal-score {
  min-width: 4.4rem;
  height: 4.4rem;
  display: grid;
  place-items: center;
  border: 0.35rem solid var(--primary);
  border-radius: 50%;
  font-size: 1.05rem;
  font-weight: 850;
}

.weekly-goal-metrics {
  display: grid;
  grid-template-columns: repeat(
    2,
    minmax(0, 1fr)
  );
  gap: 0.75rem;
}

.weekly-goal-metric {
  display: grid;
  gap: 0.35rem;
  padding: 0.7rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: var(--soft);
}

.weekly-goal-metric-heading {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  font-size: 0.88rem;
}

.weekly-goal-meter {
  height: 0.6rem;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}

.weekly-goal-meter-fill {
  height: 100%;
  display: block;
  border-radius: inherit;
  background: var(--primary);
}

.weekly-focus-row {
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  padding: 0.75rem;
  border-radius: 0.8rem;
  background: var(--soft);
}

.adaptive-daily-plan {
  display: grid;
  gap: 0.8rem;
}

.adaptive-task-list {
  display: grid;
  gap: 0.7rem;
}

.adaptive-task {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.8rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--soft);
}

.adaptive-task.primary {
  border-width: 2px;
}

.adaptive-task p {
  margin: 0.2rem 0 0;
  opacity: 0.78;
}

.adaptive-task-number {
  width: 1.9rem;
  height: 1.9rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--primary);
  color: var(--background);
  font-weight: 850;
}

@media (max-width: 680px) {
  .weekly-goal-metrics {
    grid-template-columns: 1fr;
  }

  .weekly-goal-header,
  .weekly-focus-row {
    flex-direction: column;
  }

  .adaptive-task {
    grid-template-columns: auto 1fr;
  }

  .adaptive-task .button {
    grid-column: 1 / -1;
    width: 100%;
  }
}


.continuity-notice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--soft);
}
.continuity-notice.priority { border-width: 2px; }
.continuity-notice.completed { border-style: dashed; }
.continuity-notice h3,
.continuity-notice p { margin-top: 0; }
.continuity-actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.milestone-new-card,
.milestone-catalogue { display: grid; gap: .85rem; }
.milestone-new-list,
.milestone-catalogue-list,
.milestone-pending-list { display: grid; gap: .65rem; }
.milestone-new-item,
.milestone-catalogue-item,
.milestone-pending-item {
  padding: .8rem;
  border: 1px solid var(--border);
  border-radius: .85rem;
  background: var(--soft);
}
.milestone-new-item p,
.milestone-catalogue-item p { margin: .3rem 0; }
.milestone-new-item small,
.milestone-catalogue-item small,
.milestone-pending-item small { opacity: .75; }
.milestone-catalogue-item.unlocked {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: .8rem;
}
.milestone-catalogue-item.unlocked > div { display: grid; gap: .2rem; }
.milestone-pending-item { display: grid; gap: .45rem; }
.milestone-pending-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .7rem;
}
@media (max-width: 700px) {
  .continuity-notice,
  .milestone-catalogue-item.unlocked {
    align-items: stretch;
    flex-direction: column;
  }
  .continuity-actions { width: 100%; }
  .continuity-actions .button { flex: 1 1 12rem; }
}


.topbar-status {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.runtime-badge {
  padding: 0.28rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 750;
  background: var(--soft);
}

.runtime-badge.offline {
  border-style: dashed;
}

.resume-session-card {
  display: grid;
  gap: 0.7rem;
  border-width: 2px;
}

.resume-session-note {
  margin-top: 0.7rem;
  padding: 0.65rem;
  border-radius: 0.7rem;
  background: var(--soft);
  font-weight: 700;
}

@media (max-width: 520px) {
  .runtime-badge { display: none; }
}


/* Accesibilidad móvil y candidata estable 0.35.0 */
:root {
  --reading-width: 760px;
  --touch-target: 44px;
}

:root[data-reading-width="comfortable"] {
  --reading-width: 760px;
}

:root[data-reading-width="wide"] {
  --reading-width: 980px;
}

body {
  min-height: 100dvh;
  padding:
    max(0.75rem, env(safe-area-inset-top))
    max(0.75rem, env(safe-area-inset-right))
    max(0.75rem, env(safe-area-inset-bottom))
    max(0.75rem, env(safe-area-inset-left));
  touch-action: manipulation;
}

main {
  width: min(100%, var(--reading-width));
}

.app-shell {
  min-height: calc(100dvh - 1.5rem);
  padding-bottom:
    calc(5.9rem + env(safe-area-inset-bottom));
}

.bottom-nav {
  bottom:
    max(0.35rem, env(safe-area-inset-bottom));
  width: min(
    calc(
      100%
      - max(1rem, env(safe-area-inset-left))
      - max(1rem, env(safe-area-inset-right))
    ),
    var(--reading-width)
  );
}

.button,
.option-button,
.token-button,
.mini-button,
.button-quiet,
.nav-button,
.setting-control,
.setting-toggle,
input:not([type="hidden"]),
select,
textarea,
a.skip-link {
  min-height: var(--touch-target);
}

.button,
.option-button,
.token-button,
.mini-button,
.button-quiet,
.nav-button,
.setting-control,
input,
select,
textarea {
  touch-action: manipulation;
}

:root.large-touch-targets {
  --touch-target: 48px;
}

:root.large-touch-targets .setting-toggle {
  width: 1.5rem;
  height: 1.5rem;
}

:root.comfortable-spacing .app-content {
  gap: 1.15rem;
}

:root.comfortable-spacing .panel-card,
:root.comfortable-spacing .hero-card,
:root.comfortable-spacing .practice-card,
:root.comfortable-spacing .unit-card {
  padding: clamp(1rem, 3.5vw, 1.25rem);
}

:root.comfortable-spacing p,
:root.comfortable-spacing li {
  line-height: 1.62;
}

.skip-link {
  position: fixed;
  top: max(0.5rem, env(safe-area-inset-top));
  left: max(0.5rem, env(safe-area-inset-left));
  z-index: 100;
  padding: 0.7rem 1rem;
  border: 2px solid var(--accent);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--text);
  font-weight: 800;
  transform: translateY(-180%);
  transition: transform 0.15s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.app-content:focus {
  outline: none;
}

:root.enhanced-focus .app-content:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 0.35rem;
  border-radius: 0.75rem;
}

.accessibility-audit {
  display: grid;
  gap: 0.75rem;
}

.accessibility-audit-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.accessibility-audit-item {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: var(--soft);
}

.accessibility-audit-item strong,
.accessibility-audit-item span {
  display: block;
}

.accessibility-audit-item span {
  margin-top: 0.2rem;
  font-size: 0.8rem;
  opacity: 0.72;
}

@media (hover: none), (pointer: coarse) {
  .button,
  .option-button,
  .token-button,
  .mini-button,
  .button-quiet,
  .nav-button,
  .setting-control,
  input:not([type="hidden"]),
  select,
  textarea {
    min-height: 48px;
  }

  .button,
  .option-button,
  .token-button,
  .mini-button,
  .nav-button {
    -webkit-tap-highlight-color:
      color-mix(in srgb, var(--accent) 20%, transparent);
  }
}

@media (max-width: 520px) {
  body {
    padding-left:
      max(0.6rem, env(safe-area-inset-left));
    padding-right:
      max(0.6rem, env(safe-area-inset-right));
  }

  .app-topbar {
    align-items: flex-start;
  }

  .topbar-status {
    display: grid;
    justify-items: end;
    gap: 0.35rem;
  }

  .hero-meta,
  .unit-meta,
  .panel-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .lesson-actions,
  .data-actions,
  .audio-test-actions,
  .quick-actions {
    width: 100%;
  }

  .lesson-actions .button,
  .data-actions .button,
  .audio-test-actions .button,
  .quick-actions .button {
    width: 100%;
  }

  .accessibility-audit-summary {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 380px) {
  .nav-label {
    font-size: 0.6rem;
  }

  .bottom-nav {
    gap: 0.1rem;
    padding: 0.3rem;
  }

  .nav-button {
    padding-inline: 0.1rem;
  }

  .brand-title {
    font-size: 1.1rem;
  }
}

@media (orientation: landscape) and (max-height: 520px) {
  .app-shell {
    padding-bottom:
      calc(4.9rem + env(safe-area-inset-bottom));
  }

  .nav-button {
    min-height: 3.1rem;
  }

  .nav-icon {
    display: none;
  }
}


/* Evita que el contenido de Progreso ensanche la cuadrícula con texto grande. */
.app-content,
.app-content > *,
.screen-heading,
.stats-grid,
.analytics-global-stats,
.analytics-insights-grid,
.analytics-skill-grid,
.analytics-grade-list,
.analytics-grade-row,
.analytics-grade-bars,
.progress-list,
.progress-row,
.panel-card,
.hero-card,
.practice-card,
.unit-card {
  min-width: 0;
  max-width: 100%;
}

.progress-row > div,
.analytics-insight-row > div,
.analytics-recommendation > div,
.analytics-grade-heading,
.milestone-catalogue-item > div {
  min-width: 0;
}

.analytics-range-selector {
  max-width: 100%;
}

.analytics-range-selector .mini-button {
  min-width: 0;
  flex: 1 1 6rem;
}


.dialogue-audio-models {
  display: grid;
  gap: 0.75rem;
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}

.dialogue-audio-list {
  display: grid;
  gap: 0.75rem;
}

.dialogue-audio-item {
  display: grid;
  gap: 0.45rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--soft);
  min-width: 0;
}

.dialogue-audio-item strong {
  overflow-wrap: anywhere;
}


/* Memoria guiada 0.37.0 */
.memory-instruction-box,
.memory-assurance-box,
.memory-learning-phrase,
.memory-written-guide,
.memory-meaning-box,
.memory-association-box,
.memory-comparison {
  margin: 0.9rem 0;
  padding: 0.95rem;
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  background: var(--soft);
}

.memory-instruction-box h2,
.memory-written-guide h3,
.memory-meaning-box h3,
.memory-association-box h3 {
  margin-top: 0;
}

.memory-step-list {
  display: grid;
  gap: 0.45rem;
  margin: 0;
  padding-left: 1.4rem;
}

.memory-assurance-box strong {
  display: block;
  margin-bottom: 0.35rem;
}

.memory-language-label {
  display: block;
  margin: 0.8rem 0 0.2rem;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.72;
}

.memory-english,
.memory-correct-answer {
  margin: 0.2rem 0 1rem;
  font-size: clamp(1.45rem, 5vw, 2.2rem);
  line-height: 1.2;
}

.memory-spanish,
.memory-user-answer {
  margin: 0.2rem 0;
  font-size: clamp(1.08rem, 3.8vw, 1.35rem);
}

.memory-example {
  margin-bottom: 0;
  font-style: italic;
}

.memory-association-label,
.memory-answer-label {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.75rem;
  font-weight: 750;
}

.memory-association-input,
.memory-answer-input {
  width: 100%;
  min-height: 4.5rem;
  padding: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  background: var(--surface);
  color: var(--text);
  resize: vertical;
  font-weight: 500;
}

.memory-answer-input {
  font-size: 1.1rem;
}

.memory-save-status {
  min-height: 1.4rem;
  margin: 0.45rem 0 0;
  font-size: 0.9rem;
  opacity: 0.8;
}

.memory-learning-actions,
.memory-recall-actions,
.memory-feedback-actions,
.memory-completion-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.memory-main-action {
  flex: 1 1 18rem;
}

.memory-hint p,
.memory-feedback-explanation {
  margin-bottom: 0;
}

.memory-comparison {
  display: grid;
  gap: 0.2rem;
}

.memory-feedback-card.feedback-correct {
  border-width: 2px;
  border-color: var(--success);
}

.memory-feedback-card.feedback-error {
  border-width: 2px;
  border-color: var(--danger);
}

.memory-completion-actions {
  justify-content: center;
}

@media (max-width: 650px) {
  .memory-learning-actions,
  .memory-recall-actions,
  .memory-feedback-actions,
  .memory-completion-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .memory-learning-actions .button,
  .memory-recall-actions .button,
  .memory-feedback-actions .button,
  .memory-completion-actions .button {
    width: 100%;
  }
}


.worksheet-shell{max-width:72rem;margin-inline:auto}.worksheet-guide,.worksheet-word-bank,.worksheet-summary{padding:1rem;border:1px solid var(--border);border-radius:1rem;background:var(--soft);margin-bottom:1rem}.worksheet-guide p{margin:.35rem 0 0}.worksheet-bank-list{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:.75rem}.worksheet-bank-token{padding:.4rem .65rem;border:1px solid var(--border);border-radius:999px;background:var(--surface);font-weight:700}.worksheet-form{display:grid;gap:.75rem}.worksheet-item{display:grid;grid-template-columns:auto minmax(0,1fr);gap:.8rem;padding:1rem;border:1px solid var(--border);border-radius:1rem;background:var(--surface)}.worksheet-number{width:2rem;height:2rem;display:grid;place-items:center;border-radius:50%;background:var(--primary);color:var(--background);font-weight:850}.worksheet-item-content{min-width:0}.worksheet-sentence{display:flex;align-items:center;flex-wrap:wrap;gap:.35rem;font-size:1.05rem;font-weight:750;line-height:1.7}.worksheet-inline-input{display:inline-block;min-width:8rem;max-width:100%;width:clamp(8rem,28vw,19rem);min-height:2.75rem;padding:.45rem .65rem;border:2px solid var(--border);border-radius:.65rem;background:var(--background);color:var(--text);font:inherit}.worksheet-inline-input:focus{border-color:var(--primary);outline:3px solid color-mix(in srgb,var(--primary) 30%,transparent)}.worksheet-spanish{margin:.35rem 0 0;opacity:.72}.worksheet-item-result{display:grid;gap:.35rem;margin-top:.75rem;padding:.8rem;border-radius:.75rem;background:var(--soft)}.worksheet-item-result p{margin:0}.correct-field{border-color:#2f8f55}.incorrect-field{border-color:#b84a4a}.result-correct{color:#237244}.result-incorrect{color:#9b3434}.worksheet-summary{text-align:center}.worksheet-summary h2,.worksheet-summary p{margin:.3rem}.worksheet-score{font-size:2rem;font-weight:900}.worksheet-actions{position:sticky;bottom:calc(5.5rem + env(safe-area-inset-bottom));z-index:5;padding:.75rem;border:1px solid var(--border);border-radius:1rem;background:color-mix(in srgb,var(--background) 92%,transparent);backdrop-filter:blur(8px)}
@media(max-width:600px){.worksheet-item{grid-template-columns:1fr}.worksheet-number{width:1.8rem;height:1.8rem}.worksheet-sentence{display:block}.worksheet-inline-input{display:block;width:100%;margin:.45rem 0}.worksheet-actions{display:grid;grid-template-columns:1fr}.worksheet-actions .button{width:100%}}


.workbook-shell { display: grid; gap: 1rem; }
.workbook-overview { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem; border: 1px solid var(--border); border-radius: 1rem; background: var(--soft); }
.workbook-overview h2, .workbook-overview p { margin-top: 0; }
.workbook-score { min-width: 5.5rem; min-height: 5.5rem; display: grid; place-items: center; align-content: center; border: .4rem solid var(--primary); border-radius: 50%; font-weight: 850; }
.workbook-score span { font-size: 1.25rem; }
.workbook-score small { text-align: center; font-size: .7rem; }
.workbook-criteria { display: grid; gap: .5rem; padding: 1rem; border: 1px solid var(--border); border-radius: 1rem; }
.workbook-check { display: grid; grid-template-columns: auto 1fr auto; gap: .6rem; align-items: center; padding: .55rem .7rem; border-radius: .7rem; background: var(--soft); }
.workbook-check-mark { width: 1.6rem; height: 1.6rem; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--border); font-weight: 850; }
.workbook-check.passed .workbook-check-mark { background: var(--success); color: white; border-color: transparent; }
.workbook-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .8rem; }
.workbook-card { display: grid; grid-template-columns: auto 1fr; gap: .75rem; align-items: start; padding: 1rem; border: 1px solid var(--border); border-radius: 1rem; background: var(--soft); }
.workbook-order { width: 2rem; height: 2rem; display: grid; place-items: center; border-radius: 50%; background: var(--primary); color: var(--background); font-weight: 850; }
.workbook-card-text { min-width: 0; }
.workbook-card-text h3, .workbook-card-text p { overflow-wrap: anywhere; }
.workbook-card-meta { grid-column: 2; display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem; align-items: center; }
.workbook-card > .button { grid-column: 1 / -1; width: 100%; }
.worksheet-block-label { display: grid; gap: .55rem; }
.worksheet-block-input, .worksheet-select, .worksheet-writing-area { width: 100%; min-height: 2.8rem; padding: .65rem .75rem; border: 1px solid var(--border); border-radius: .65rem; background: var(--surface); color: var(--text); }
.worksheet-token-list { display: flex; flex-wrap: wrap; gap: .4rem; }
.worksheet-choice-fieldset { min-width: 0; border: 0; padding: 0; margin: 0; display: grid; gap: .5rem; }
.worksheet-choice-legend { font-weight: 800; margin-bottom: .4rem; overflow-wrap: anywhere; }
.worksheet-choice-option, .worksheet-check-option { display: flex; align-items: flex-start; gap: .65rem; min-height: 2.8rem; padding: .65rem; border: 1px solid var(--border); border-radius: .7rem; background: var(--surface); }
.worksheet-choice-option input, .worksheet-check-option input { flex: 0 0 auto; margin-top: .25rem; }
.worksheet-writing-task { display: grid; gap: .8rem; }
.worksheet-context-note { padding: .7rem; border-left: .25rem solid var(--primary); background: var(--soft); }
.worksheet-required-ideas { margin-top: 0; }
.worksheet-word-count { font-weight: 750; text-align: right; }
.worksheet-writing-checklist, .worksheet-models { display: grid; gap: .55rem; }
.worksheet-models { margin-top: 1rem; padding: .8rem; border: 1px solid var(--border); border-radius: .8rem; background: var(--soft); }
@media (max-width: 720px) {
  .workbook-grid { grid-template-columns: 1fr; }
  .workbook-overview { align-items: stretch; flex-direction: column; }
  .workbook-score { align-self: center; }
}


.lesson-levels-shell { display: grid; gap: 1rem; }
.level-policy-note { padding: 1rem; border: 2px solid var(--primary); border-radius: 1rem; background: var(--soft); }
.level-policy-note p { margin-bottom: 0; }
.lesson-level-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .85rem; }
.lesson-level-card { display: grid; align-content: start; gap: .65rem; padding: 1rem; border: 1px solid var(--border); border-radius: 1rem; background: var(--surface); }
.lesson-level-card h2, .lesson-level-card p { margin: 0; }
.lesson-level-card.level-essential { border-width: 2px; }
.lesson-level-card-top { display: flex; justify-content: space-between; gap: .5rem; flex-wrap: wrap; }
.level-done { font-weight: 800; }
.level-feature-list { margin: 0; padding-left: 1.2rem; }
.level-examples-panel { padding: 1rem; border: 1px solid var(--border); border-radius: 1rem; }
.level-micro-details { border-top: 1px solid var(--border); padding: .7rem 0; }
.level-micro-details summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; font-weight: 750; }
.level-example-list { display: grid; gap: .6rem; margin-top: .6rem; }
.level-example-row { display: grid; grid-template-columns: 1fr auto; gap: .7rem; padding: .75rem; border-radius: .8rem; background: var(--soft); }
.level-example-row > div:first-child { display: grid; gap: .2rem; }
.level-example-row span, .level-example-row small { opacity: .78; }
.level-summary-strip { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: .5rem; margin-top: .7rem; }
.level-summary-item { padding: .65rem; border-radius: .75rem; background: var(--soft); text-align: center; font-size: .85rem; }
@media (max-width: 760px) { .lesson-level-grid, .level-summary-strip { grid-template-columns: 1fr; } .level-example-row { grid-template-columns: 1fr; } }


/* ==============================================================
   V1.0 · Diseño final: elegante, legible y fácil de usar
   ============================================================== */
:root {
  color-scheme: light;
  --page: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --soft: #eef2f7;
  --text: #182033;
  --muted: #667085;
  --border: #d9e1ec;
  --accent: #2855d9;
  --accent-strong: #1d43b8;
  --accent-soft: #eaf0ff;
  --success: #18794e;
  --success-soft: #eaf8f1;
  --warning: #9a6700;
  --danger: #b42318;
  --shadow-sm: 0 1px 2px rgba(16,24,40,.05), 0 1px 4px rgba(16,24,40,.04);
  --shadow-md: 0 10px 30px rgba(24,32,51,.08);
  --radius-sm: .75rem;
  --radius-md: 1rem;
  --radius-lg: 1.35rem;
}
.dark-theme {
  color-scheme: dark;
  --page: #0f1420;
  --surface: #171e2d;
  --surface-2: #1d2638;
  --soft: #253047;
  --text: #f2f5fb;
  --muted: #abb6ca;
  --border: #34415a;
  --accent: #8ba8ff;
  --accent-strong: #adc0ff;
  --accent-soft: #26365f;
  --success-soft: #143b2c;
}
html { background: var(--page); }
body { padding: 0; background: var(--page); color: var(--text); font-size: 16px; }
main { width: min(100%, 1020px); }
.app-shell { min-height: 100dvh; }
.app-topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: max(.7rem, env(safe-area-inset-top)) clamp(1rem,4vw,1.5rem) .7rem;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(18px);
}
.brand-block { display:flex; align-items:center; gap:.7rem; min-width:0; }
.brand-mark { width:2.35rem; height:2.35rem; display:grid; place-items:center; flex:0 0 auto; border-radius:.8rem; background:linear-gradient(145deg,var(--accent),#6d8cff); color:white; font-weight:850; font-size:.78rem; box-shadow:var(--shadow-sm); }
.brand-copy { min-width:0; }
.brand-kicker { margin:0; color:var(--muted); font-size:.72rem; font-weight:750; letter-spacing:.04em; text-transform:uppercase; }
.brand-title { margin:.05rem 0 0; font-size:clamp(.98rem,3vw,1.18rem); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.topbar-status { display:flex; align-items:center; gap:.4rem; }
.runtime-badge,.version-badge { padding:.32rem .55rem; border-radius:999px; font-size:.7rem; font-weight:750; background:var(--soft); color:var(--muted); }
.runtime-badge.online::before,.runtime-badge.offline::before { content:""; display:inline-block; width:.42rem; height:.42rem; margin-right:.35rem; border-radius:50%; background:var(--success); }
.runtime-badge.offline::before { background:var(--warning); }
.app-content { width:min(100%,900px); margin:0 auto; padding:clamp(1rem,4vw,1.6rem) clamp(.85rem,4vw,1.4rem) calc(7.4rem + env(safe-area-inset-bottom)); outline:none!important; }
.screen-heading { margin:0 0 1rem; }
.screen-heading h2 { margin:0; font-size:clamp(1.65rem,6vw,2.15rem); letter-spacing:-.035em; line-height:1.05; }
.screen-heading p { margin:.45rem 0 0; color:var(--muted); max-width:68ch; }
.panel-card,.hero-card,.current-unit-card,.route-toolbar,.content-disclosure,.unit-route-guide,.continuity-notice,.active-unit-banner,.adaptive-banner,.practice-card,.stat-card {
  border:1px solid var(--border); border-radius:var(--radius-lg); background:var(--surface); box-shadow:var(--shadow-sm);
}
.panel-card,.hero-card,.current-unit-card,.unit-route-guide { padding:clamp(1rem,4vw,1.35rem); }
.panel-card + .panel-card,.content-disclosure + .content-disclosure { margin-top:.85rem; }
h1,h2,h3,h4,strong { color:var(--text); }
p { color:var(--text); }
.eyebrow { color:var(--accent); opacity:1; font-weight:800; }
.button { min-height:44px; border-radius:.85rem; font-weight:720; transition:transform .12s ease, box-shadow .12s ease, background .12s ease; }
.button:hover:not(:disabled) { transform:translateY(-1px); box-shadow:var(--shadow-sm); }
.button-primary { background:var(--accent); border-color:var(--accent); color:white; }
.button-primary:hover:not(:disabled) { background:var(--accent-strong); }
.button-secondary,.button-ghost { background:var(--surface); color:var(--text); border-color:var(--border); }
.button-ghost { border-color:transparent; color:var(--accent); }
.status-pill { border-radius:999px; background:var(--soft); color:var(--muted); font-weight:760; }
.status-available,.status-essential_complete { background:var(--accent-soft); color:var(--accent-strong); }
.status-completed { background:var(--success-soft); color:var(--success); }
.progress-track { background:var(--soft); height:.45rem; }
.progress-fill { background:linear-gradient(90deg,var(--accent),#7896f5); }
.bottom-nav {
  position:fixed; left:50%; bottom:max(.7rem,env(safe-area-inset-bottom)); transform:translateX(-50%); z-index:40;
  width:min(calc(100% - 1rem),620px); display:grid; grid-template-columns:repeat(5,1fr); gap:.2rem;
  padding:.38rem; border:1px solid color-mix(in srgb,var(--border) 85%,transparent); border-radius:1.25rem;
  background:color-mix(in srgb,var(--surface) 94%,transparent); backdrop-filter:blur(18px); box-shadow:0 15px 45px rgba(24,32,51,.18);
}
.nav-button { min-width:0; min-height:54px; border:0; border-radius:.95rem; background:transparent; color:var(--muted); }
.nav-button.active { background:var(--accent-soft); color:var(--accent-strong); }
.nav-icon { font-size:1.05rem; }
.nav-label { font-size:.7rem; font-weight:750; }
.stats-grid { grid-template-columns:repeat(2,minmax(0,1fr)); gap:.7rem; }
.stat-card { padding:.9rem; min-width:0; }
.stat-label,.stat-hint { color:var(--muted); }
.stat-value { font-size:1.3rem; }

/* Hoy */
.adaptive-hero { background:linear-gradient(145deg,var(--surface),var(--accent-soft)); border-color:color-mix(in srgb,var(--accent) 25%,var(--border)); }
.hero-meta { display:flex; flex-wrap:wrap; gap:.4rem; }
.hero-meta span { padding:.35rem .55rem; border-radius:999px; background:var(--surface); color:var(--muted); font-size:.78rem; }
.unit-route-guide { margin-top:.85rem; background:var(--surface-2); }
.unit-route-guide p { margin:.35rem 0 0; color:var(--muted); }
.content-disclosure { overflow:hidden; margin-top:.85rem; }
.content-disclosure > summary { list-style:none; display:flex; justify-content:space-between; align-items:center; gap:1rem; min-height:58px; padding:.9rem 1rem; cursor:pointer; }
.content-disclosure > summary::-webkit-details-marker { display:none; }
.content-disclosure > summary > div { display:grid; gap:.15rem; }
.content-disclosure > summary span:not(.disclosure-icon) { color:var(--muted); font-size:.84rem; }
.disclosure-icon { width:1.75rem; height:1.75rem; display:grid; place-items:center; border-radius:50%; background:var(--soft); color:var(--accent); font-size:1.1rem; transition:transform .15s ease; }
.content-disclosure[open] .disclosure-icon { transform:rotate(45deg); }
.content-disclosure > :not(summary) { margin:0; border:0; border-top:1px solid var(--border); border-radius:0; box-shadow:none; }

/* Aprender */
.current-unit-card { display:grid; grid-template-columns:1fr auto; gap:1rem; align-items:center; background:linear-gradient(145deg,var(--surface),var(--accent-soft)); }
.current-unit-copy h3 { margin:.2rem 0 .35rem; }
.current-unit-copy p:last-child { margin:0; color:var(--muted); }
.current-unit-meta { min-width:5.3rem; display:grid; text-align:center; padding:.8rem; border-radius:1rem; background:var(--surface); }
.current-unit-meta strong { font-size:1.45rem; color:var(--accent); }
.current-unit-meta span { color:var(--muted); font-size:.75rem; }
.current-unit-actions { grid-column:1/-1; display:flex; flex-wrap:wrap; gap:.55rem; }
.route-toolbar { display:grid; grid-template-columns:1fr auto; gap:.6rem; padding:.65rem; margin-top:.85rem; position:sticky; top:4.7rem; z-index:20; }
.route-search input,.route-toolbar select { width:100%; min-height:44px; padding:.65rem .8rem; border:1px solid var(--border); border-radius:.8rem; background:var(--surface); color:var(--text); }
.route-summary { display:flex; flex-wrap:wrap; gap:.45rem; margin:.75rem 0; }
.route-summary span { padding:.35rem .6rem; border-radius:999px; background:var(--soft); color:var(--muted); font-size:.78rem; }
.grade-route { display:grid; gap:.7rem; }
.grade-section { border:1px solid var(--border); border-radius:var(--radius-lg); background:var(--surface); overflow:hidden; box-shadow:var(--shadow-sm); }
.grade-section > summary { list-style:none; display:flex; align-items:center; justify-content:space-between; gap:1rem; padding:1rem; cursor:pointer; }
.grade-section > summary::-webkit-details-marker { display:none; }
.grade-title { display:grid; gap:.12rem; }
.grade-title span { color:var(--muted); font-size:.85rem; }
.grade-count { min-width:3rem; text-align:center; padding:.3rem .55rem; border-radius:999px; background:var(--soft); color:var(--muted); font-size:.78rem; font-weight:760; }
.route-unit-list { display:grid; gap:.65rem; padding:.25rem .75rem .75rem; border-top:1px solid var(--border); }
.route-unit { display:grid; grid-template-columns:1fr auto; gap:.8rem; padding:.9rem; border:1px solid var(--border); border-radius:1rem; background:var(--surface-2); }
.route-unit.active-unit { border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-soft); }
.route-unit-heading { display:grid; grid-template-columns:auto 1fr; align-items:start; gap:.7rem; }
.unit-code { min-width:2.6rem; padding:.35rem .45rem; border-radius:.7rem; background:var(--accent-soft); color:var(--accent-strong); text-align:center; font-size:.78rem; font-weight:800; }
.route-unit-heading h4 { margin:0 0 .25rem; }
.route-unit-heading > div { min-width:0; }
.route-unit-objective { margin:.45rem 0; color:var(--muted); font-size:.9rem; }
.route-unit-meta { margin:0; color:var(--muted); font-size:.78rem; }
.route-unit-actions { display:flex; flex-direction:column; gap:.45rem; justify-content:center; }

/* Practicar */
.practice-grid { grid-template-columns:repeat(2,minmax(0,1fr)); gap:.75rem; }
.practice-card { padding:1rem; display:flex; flex-direction:column; }
.practice-card .button { margin-top:auto; }
.active-unit-banner,.adaptive-banner { background:var(--surface); }

/* Progreso y Más */
.progress-disclosure > section,.settings-disclosure > section { padding:1rem; }
.analytics-grade-list { max-height:32rem; overflow:auto; padding-right:.2rem; }
.quick-guide-card,.future-content-card { background:linear-gradient(145deg,var(--surface),var(--accent-soft)); }
.settings-disclosure { margin-top:.7rem; }
.settings-disclosure > section { background:var(--surface-2); }
.muted-card { color:var(--muted); }

.lesson-shell { background:var(--surface); border-color:var(--border); box-shadow:var(--shadow-md); }
.exercise-card,.objective-box,.completion-card { background:var(--surface-2); border-color:var(--border); }
.option-button { background:var(--surface); color:var(--text); }
input,select,textarea { background:var(--surface); color:var(--text); border-color:var(--border); }
.app-content:focus { outline:none!important; }
:where(button,a,input,select,textarea,summary):focus-visible { outline:3px solid color-mix(in srgb,var(--accent) 45%,transparent); outline-offset:2px; }

@media (min-width:760px) {
  .app-content { padding-top:1.5rem; }
  .stats-grid { grid-template-columns:repeat(4,minmax(0,1fr)); }
  .route-unit-list { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .route-unit { grid-template-columns:1fr; }
  .route-unit-actions { flex-direction:row; justify-content:flex-start; }
}
@media (max-width:620px) {
  .runtime-badge { display:none; }
  .app-topbar { padding-left:.85rem; padding-right:.85rem; }
  .app-content { padding-left:.7rem; padding-right:.7rem; }
  .current-unit-card,.route-unit { grid-template-columns:1fr; }
  .current-unit-meta { display:none; }
  .route-toolbar { grid-template-columns:1fr; top:4.3rem; }
  .route-unit-actions { flex-direction:row; justify-content:stretch; }
  .route-unit-actions .button { flex:1; }
  .practice-grid { grid-template-columns:1fr; }
  .content-disclosure > summary { padding:.85rem; }
}
@media (max-width:390px) {
  .brand-title { max-width:12.5rem; }
  .nav-label { font-size:.64rem; }
  .bottom-nav { width:calc(100% - .6rem); bottom:max(.3rem,env(safe-area-inset-bottom)); }
}

.preview-file-notice {
  max-width: 900px;
  margin: .7rem auto 0;
  padding: .65rem .85rem;
  border: 1px solid var(--border);
  border-radius: .9rem;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: .82rem;
  line-height: 1.4;
}

/* Inglés natural · ampliación 1.1 */
.natural-policy-note,
.natural-study-instructions {
  display: grid;
  gap: 0.25rem;
  margin: 0 0 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--soft);
}

.natural-policy-note.compact {
  margin-top: 1rem;
}

.natural-policy-note p,
.natural-study-instructions p {
  margin: 0;
}

.natural-summary-grid {
  margin-bottom: 1rem;
}

.natural-toolbar {
  display: flex;
  gap: 0.7rem;
  align-items: center;
  margin: 1rem 0;
}

.natural-toolbar input {
  min-width: 0;
  flex: 1 1 18rem;
  min-height: 44px;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface);
  color: var(--text);
}

.natural-pack-list,
.natural-expression-list {
  display: grid;
  gap: 0.9rem;
}

.natural-pack-card,
.natural-expression-card,
.natural-question-card,
.natural-result-card {
  min-width: 0;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: color-mix(in srgb, Canvas 97%, CanvasText 3%);
}

.natural-pack-head,
.natural-expression-top,
.natural-question-progress {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.8rem;
}

.natural-pack-head h3,
.natural-expression-card h3,
.natural-result-card h2 {
  margin: 0;
}

.natural-pack-head p,
.natural-expression-card p {
  overflow-wrap: anywhere;
}

.natural-topic-list,
.natural-badges,
.natural-pack-actions,
.natural-sticky-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.natural-topic-list {
  margin: 0.7rem 0;
}

.natural-pack-actions .button,
.natural-sticky-actions .button {
  flex: 1 1 12rem;
}

.natural-expression-phrase,
.natural-question-prompt {
  font-size: clamp(1.25rem, 4vw, 1.75rem);
  line-height: 1.22;
}

.natural-expression-meaning {
  margin: 0.4rem 0 0;
  font-size: 1.05rem;
}

.natural-example-box {
  margin-top: 0.8rem;
  padding: 0.85rem;
  border-radius: 0.85rem;
  background: var(--soft);
}

.natural-example-box p,
.natural-feedback p {
  margin: 0.35rem 0;
}

.natural-example-en {
  font-weight: 700;
}

.natural-example-es,
.natural-usage-note,
.natural-expression-progress {
  opacity: 0.78;
}

.natural-usage-note {
  padding: 0.7rem 0.8rem;
  border-left: 0.25rem solid var(--accent);
  background: var(--soft);
}

.natural-sticky-actions {
  position: sticky;
  bottom: calc(5.8rem + env(safe-area-inset-bottom));
  z-index: 4;
  margin-top: 1rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: color-mix(in srgb, Canvas 94%, transparent);
  backdrop-filter: blur(10px);
}

.natural-practice-shell {
  width: 100%;
}

.natural-question-stage {
  display: grid;
  gap: 0.8rem;
}

.natural-choice-grid {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
}

.natural-choice-button {
  width: 100%;
  min-height: 48px;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--surface);
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.natural-choice-button.correct {
  border-color: var(--success);
  background: color-mix(in srgb, var(--success) 12%, var(--surface));
}

.natural-choice-button.incorrect {
  border-color: var(--danger);
  background: color-mix(in srgb, var(--danger) 10%, var(--surface));
}

.natural-feedback {
  display: grid;
  gap: 0.45rem;
  min-height: 1rem;
  margin-top: 1rem;
}

.natural-result-card {
  text-align: center;
}

.natural-result-card h2 {
  font-size: clamp(2.5rem, 12vw, 4.5rem);
}

.natural-progress-panel .stats-grid {
  margin: 0.8rem 0 1rem;
}

@media (max-width: 620px) {
  .natural-toolbar,
  .natural-pack-head,
  .natural-expression-top {
    align-items: stretch;
    flex-direction: column;
  }

  .natural-toolbar .button,
  .natural-pack-actions .button,
  .natural-sticky-actions .button {
    width: 100%;
  }

  .natural-badges {
    justify-content: flex-start;
  }
}


/* Navegación visible en todas las pantallas de estudio · v1.1.1 */
.lesson-header-with-exit {
  position: sticky;
  top: calc(env(safe-area-inset-top, 0px) + 0.35rem);
  z-index: 40;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  justify-content: initial;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  box-shadow: 0 0.5rem 1.25rem color-mix(in srgb, CanvasText 8%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.study-back-button {
  align-self: start;
  flex: 0 0 auto;
  min-width: 6.25rem;
  min-height: 44px;
  white-space: nowrap;
}

.lesson-header-with-exit > div {
  min-width: 0;
}

@media (max-width: 520px) {
  .lesson-header-with-exit {
    grid-template-columns: 1fr;
  }

  .study-back-button {
    width: fit-content;
    max-width: 100%;
  }
}


/* Arquitectura por ámbitos y Rueda de Maestría · v1.2 */
.domain-switcher { position: relative; }
.domain-switcher-summary {
  min-height: 36px; display:flex; align-items:center; gap:.4rem; padding:.25rem .5rem;
  border:1px solid var(--border); border-radius:999px; background:var(--surface-2);
  color:var(--text); cursor:pointer; list-style:none; font-size:.76rem; font-weight:780;
}
.domain-switcher-summary::-webkit-details-marker { display:none; }
.domain-switcher-icon,.domain-option-icon,.domain-map-icon {
  display:grid; place-items:center; border-radius:.65rem; background:linear-gradient(145deg,var(--domain-color,var(--accent)),color-mix(in srgb,var(--domain-color,var(--accent)) 68%,white));
  color:white; font-weight:850; letter-spacing:.02em;
}
.domain-switcher-icon { width:1.65rem; height:1.65rem; font-size:.58rem; }
.domain-switcher-chevron { color:var(--muted); }
.domain-switcher-menu {
  position:absolute; top:calc(100% + .55rem); right:0; z-index:90; width:min(22rem,calc(100vw - 1.4rem));
  display:grid; gap:.45rem; padding:.75rem; border:1px solid var(--border); border-radius:1rem;
  background:var(--surface); box-shadow:var(--shadow-md);
}
.domain-switcher-menu > p { margin:-.2rem 0 .35rem; color:var(--muted); font-size:.8rem; }
.domain-option { width:100%; min-height:54px; display:grid; grid-template-columns:auto 1fr; align-items:center; gap:.65rem; padding:.55rem; border:1px solid var(--border); border-radius:.85rem; background:var(--surface-2); color:var(--text); text-align:left; cursor:pointer; }
.domain-option[aria-current="true"] { border-color:var(--domain-color); box-shadow:0 0 0 3px color-mix(in srgb,var(--domain-color) 16%,transparent); }
.domain-option[aria-disabled="true"] { opacity:.62; cursor:default; }
.domain-option-icon { width:2rem; height:2rem; font-size:.64rem; }
.domain-option-copy { display:grid; gap:.1rem; }
.domain-option-copy small { color:var(--muted); }

.mastery-card {
  --mastery-glow: color-mix(in srgb,var(--accent) 12%,transparent);
  display:grid; grid-template-columns:minmax(15rem,.9fr) minmax(17rem,1.1fr); gap:1rem; align-items:center;
  margin:0 0 .9rem; padding:clamp(1rem,4vw,1.35rem); border:1px solid color-mix(in srgb,var(--accent) 24%,var(--border));
  border-radius:1.25rem; background:radial-gradient(circle at 20% 10%,var(--mastery-glow),transparent 44%),linear-gradient(145deg,var(--surface),var(--surface-2)); box-shadow:var(--shadow-sm);
}
.mastery-card.compact { grid-template-columns:minmax(11rem,.72fr) minmax(15rem,1fr); }
.mastery-card-copy h3 { margin:.2rem 0 .35rem; font-size:clamp(1.15rem,4vw,1.45rem); }
.mastery-card-copy p:last-child { margin:0; color:var(--muted); }
.mastery-wheel-visual { width:min(100%,23rem); margin-inline:auto; }
.mastery-wheel-svg { display:block; width:100%; height:auto; overflow:visible; }
.mastery-grid { fill:none; stroke:var(--border); stroke-width:1; opacity:.75; }
.mastery-grid.outer { stroke-width:1.5; }
.mastery-spoke { stroke:var(--border); stroke-width:1; opacity:.55; }
.mastery-segment-bg { fill:var(--soft); stroke:var(--surface); stroke-width:2; opacity:.82; }
.mastery-segment-value { opacity:.88; stroke:color-mix(in srgb,var(--segment-color) 70%,white); stroke-width:1.4; transition:opacity .18s ease; }
.mastery-segment-value:hover { opacity:1; }
.mastery-wheel-label { fill:var(--muted); font-size:10px; font-weight:760; }
.mastery-centre { fill:var(--surface); stroke:var(--border); stroke-width:2; }
.mastery-centre-score { fill:var(--text); font-size:18px; font-weight:850; }
.mastery-centre-label { fill:var(--muted); font-size:7px; }
.mastery-legend { grid-column:1/-1; display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:.6rem; }
.mastery-legend-item { display:grid; gap:.3rem; padding:.7rem; border:1px solid var(--border); border-left:4px solid var(--skill-color); border-radius:.8rem; background:color-mix(in srgb,var(--skill-color) 5%,var(--surface)); }
.mastery-legend-heading { display:flex; justify-content:space-between; gap:.7rem; }
.mastery-legend-heading span { color:var(--skill-color); font-weight:850; }
.mastery-legend-meter { height:.42rem; overflow:hidden; border-radius:999px; background:var(--soft); }
.mastery-legend-meter span { display:block; height:100%; border-radius:inherit; background:var(--skill-color); }
.mastery-legend-item small { color:var(--muted); line-height:1.35; }
.mastery-compact-insight { grid-column:1/-1; display:flex; flex-wrap:wrap; gap:.45rem; }
.mastery-compact-insight span { padding:.4rem .62rem; border-radius:999px; background:var(--surface); color:var(--muted); font-size:.78rem; }

.domain-map-card { padding:1rem; }
.domain-map-card > p { color:var(--muted); }
.domain-map-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:.65rem; margin-top:.85rem; }
.domain-map-item { display:grid; grid-template-columns:auto 1fr; gap:.7rem; align-items:start; padding:.8rem; border:1px solid var(--border); border-top:4px solid var(--domain-color); border-radius:.9rem; background:var(--surface-2); }
.domain-map-item.active { box-shadow:0 0 0 3px color-mix(in srgb,var(--domain-color) 12%,transparent); }
.domain-map-item.planned { opacity:.78; }
.domain-map-icon { width:2.35rem; height:2.35rem; font-size:.7rem; }
.domain-map-item p { margin:.25rem 0 0; color:var(--muted); font-size:.85rem; }
.domain-map-status { grid-column:2; width:fit-content; padding:.28rem .5rem; border-radius:999px; background:var(--soft); color:var(--muted); font-size:.72rem; font-weight:760; }

@media (max-width:760px) {
  .mastery-card,.mastery-card.compact { grid-template-columns:1fr; }
  .mastery-card-copy { text-align:left; }
  .mastery-wheel-visual { width:min(100%,20rem); }
}
@media (max-width:620px) {
  .domain-switcher-label { display:none; }
  .domain-switcher-summary { padding:.22rem; }
  .version-badge { display:none; }
  .mastery-legend,.domain-map-grid { grid-template-columns:1fr; }
}
@media (max-width:390px) {
  .mastery-wheel-label { font-size:9px; }
  .mastery-card { padding:.85rem; }
}


/* Diálogos y situaciones reales · v1.3.0 */
.dialogue-shell {
  display: grid;
  gap: 1rem;
}

.dialogue-intro-card,
.dialogue-context-card,
.dialogue-bridge-note,
.dialogue-free-prompt {
  display: grid;
  gap: 0.5rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, var(--primary) 10%, var(--surface)),
      var(--surface)
    );
}

.dialogue-bridge-note {
  background:
    linear-gradient(
      135deg,
      color-mix(in srgb, #ec4899 12%, var(--surface)),
      color-mix(in srgb, #8b5cf6 8%, var(--surface))
    );
}

.dialogue-filters {
  display: grid;
  gap: 0.7rem;
}

.dialogue-filters input[type="search"] {
  width: 100%;
  min-height: 48px;
}

.dialogue-filter-buttons,
.dialogue-summary-row,
.dialogue-domain-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.dialogue-card-grid,
.dialogue-mode-grid {
  display: grid;
  grid-template-columns: repeat(
    auto-fit,
    minmax(min(100%, 18rem), 1fr)
  );
  gap: 0.85rem;
}

.dialogue-card,
.dialogue-mode-card {
  display: grid;
  gap: 0.65rem;
  align-content: start;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: 0 0.55rem 1.35rem color-mix(in srgb, CanvasText 6%, transparent);
}

.dialogue-card.bridge {
  border-color: color-mix(in srgb, #ec4899 45%, var(--border));
  background:
    linear-gradient(
      160deg,
      color-mix(in srgb, #ec4899 8%, var(--surface)),
      var(--surface)
    );
}

.dialogue-card .button,
.dialogue-mode-card .button {
  margin-top: auto;
}

.dialogue-domain-tag {
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--primary) 10%, var(--surface));
  border: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 750;
}

.dialogue-model-disclosure,
.dialogue-turn-card,
.dialogue-gap-row,
.dialogue-branch-card,
.dialogue-branch-complete {
  border: 1px solid var(--border);
  border-radius: 1rem;
  background: var(--surface);
}

.dialogue-model-list,
.dialogue-guided-form,
.dialogue-gap-form,
.dialogue-result-list,
.dialogue-branch-stage {
  display: grid;
  gap: 0.8rem;
}

.dialogue-model-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.7rem;
  align-items: center;
  padding: 0.8rem;
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  background: var(--soft);
}

.dialogue-model-row > div {
  display: grid;
  gap: 0.25rem;
}

.dialogue-turn-card {
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
}

.dialogue-turn-card legend {
  padding: 0 0.35rem;
  font-weight: 850;
}

.dialogue-partner-line {
  margin: 0;
  padding: 0.75rem;
  border-left: 0.35rem solid var(--primary);
  border-radius: 0.4rem;
  background: var(--soft);
  font-weight: 750;
}

.dialogue-goal-line {
  margin: 0;
  color: var(--muted);
}

.dialogue-choice-list,
.dialogue-branch-choices {
  display: grid;
  gap: 0.55rem;
}

.dialogue-choice {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.8rem;
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  cursor: pointer;
}

.dialogue-choice:has(input:checked) {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 8%, var(--surface));
}

.dialogue-gap-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.7rem;
  align-items: start;
  padding: 0.85rem;
}

.dialogue-gap-row small {
  grid-column: 2;
}

.dialogue-item-number {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--primary);
  color: var(--background);
  font-weight: 850;
}

.dialogue-gap-sentence {
  line-height: 2.4;
}

.dialogue-gap-sentence input {
  width: min(11rem, 45vw);
  margin: 0 0.35rem;
}

.input-correct {
  border-color: #16a34a !important;
}

.input-incorrect {
  border-color: #dc2626 !important;
}

.dialogue-result {
  display: grid;
  gap: 0.3rem;
  padding: 0.75rem;
  border-radius: 0.8rem;
  border: 1px solid var(--border);
}

.dialogue-result.correct {
  background: color-mix(in srgb, #22c55e 10%, var(--surface));
}

.dialogue-result.incorrect {
  background: color-mix(in srgb, #ef4444 9%, var(--surface));
}

.dialogue-free-form {
  display: grid;
  gap: 0.75rem;
}

.dialogue-free-form label:first-child {
  display: grid;
  gap: 0.45rem;
  font-weight: 800;
}

.dialogue-free-form textarea {
  width: 100%;
  resize: vertical;
}

.dialogue-check {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  padding: 0.65rem;
  border-radius: 0.75rem;
  background: var(--soft);
}

.dialogue-branch-card,
.dialogue-branch-complete {
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
}

.dialogue-branch-choice {
  text-align: left;
  white-space: normal;
}

.dialogue-progress-panel {
  display: grid;
  gap: 0.85rem;
}

@media (max-width: 560px) {
  .dialogue-model-row {
    grid-template-columns: 1fr;
  }

  .dialogue-gap-row {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .dialogue-gap-sentence input {
    width: min(9rem, 55vw);
  }
}

/* Sincronización móvil + tablet · Z3RT 1.5.0 */
.cloud-sync-card {
  border-width: 2px;
  border-color: color-mix(in srgb, var(--accent) 48%, var(--border));
  background: color-mix(in srgb, var(--accent) 6%, var(--surface));
}

.sync-fields {
  display: grid;
  gap: 0.35rem;
  margin-top: 0.8rem;
}

.sync-text-field {
  cursor: default;
}

.sync-code-wrapper {
  width: min(100%, 24rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.45rem;
  align-items: center;
}

.sync-code-input {
  width: 100%;
  max-width: none;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: 0.035em;
}

.sync-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sync-actions .button {
  width: 100%;
}

@media (max-width: 620px) {
  .sync-code-wrapper,
  .sync-actions {
    grid-template-columns: 1fr;
  }

  .sync-code-wrapper .mini-button {
    width: 100%;
  }
}