/* Mobile-first styles, tuned for iPhone 15 (390x844pt) / iOS Safari.
 * Safe-area aware, no hover-dependent interactions, 44px+ tap targets. */

:root {
  --sat: env(safe-area-inset-top, 0px);
  --sab: env(safe-area-inset-bottom, 0px);
  --sal: env(safe-area-inset-left, 0px);
  --sar: env(safe-area-inset-right, 0px);

  --bg: #eef0f8;
  --card: #ffffff;
  --text: #171a2b;
  --muted: #5b6178;
  --border: #e2e5f0;
  --primary: #4f46e5;
  --primary-soft: #e6e4ff;
  --accent: #7c3aed;
  --success: #15803d;
  --success-bg: #e7f6ec;
  --danger: #dc2626;
  --danger-bg: #fdecec;
  --warn: #b45309;
  --warn-bg: #fef3e2;
  --radius: 16px;
  --header-h: 52px;
  --tab-h: 60px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font-family:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

#app {
  min-height: 100vh;
  min-height: 100dvh;
}

/* Keep every element from causing horizontal overflow. */
img,
svg,
table,
pre,
video {
  max-width: 100%;
}

p,
h1,
h2,
h3,
li {
  overflow-wrap: break-word;
  word-wrap: break-word;
}

/* ---- App bar ---- */

.app-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 8px;
  height: calc(var(--header-h) + var(--sat));
  padding: var(--sat) calc(12px + var(--sar)) 0 calc(12px + var(--sal));
  background: rgba(255, 255, 255, 0.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.app-bar__back {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--primary);
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
}

.app-bar__back.is-hidden {
  visibility: hidden;
  pointer-events: none;
}

.app-bar__title {
  flex: 1;
  min-width: 0;
  font-size: 17px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-bar__chips {
  display: flex;
  gap: 6px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 32px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.chip--streak {
  background: #fff3d6;
  color: #92400e;
}

.chip--points {
  background: var(--primary-soft);
  color: var(--primary);
}

/* ---- Main view ---- */

.view {
  padding: calc(var(--header-h) + var(--sat) + 16px) calc(16px + var(--sar))
    calc(var(--tab-h) + var(--sab) + 32px) calc(16px + var(--sal));
  max-width: 720px;
  margin: 0 auto;
}

/* ---- Tab bar ---- */

.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 40;
  display: flex;
  height: calc(var(--tab-h) + var(--sab));
  padding: 0 calc(8px + var(--sar)) var(--sab) calc(8px + var(--sal));
  background: rgba(255, 255, 255, 0.92);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-top: 1px solid var(--border);
}

.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 48px;
  border-radius: 12px;
  color: var(--muted);
  text-decoration: none;
  font-size: 12px;
  font-weight: 600;
}

.tab__icon {
  font-size: 20px;
  line-height: 1;
}

.tab.is-active {
  color: var(--primary);
  background: var(--primary-soft);
}

/* ---- Cards ---- */

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: 0 1px 2px rgba(23, 26, 43, 0.04);
}

.card__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
}

.card__sub {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--muted);
}

.card__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  color: var(--muted);
}

.card--danger {
  border-color: #f3caca;
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  touch-action: manipulation;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.6;
  cursor: default;
}

.btn--primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.btn--danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

/* ---- Progress bars ---- */

.progress {
  height: 8px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
}

.progress__fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.3s ease;
}

/* ---- Badges / notices ---- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.badge--done {
  background: var(--success-bg);
  color: var(--success);
}

.notice {
  padding: 10px 12px;
  margin-bottom: 12px;
  border-radius: 12px;
  background: var(--warn-bg);
  color: var(--warn);
  font-size: 14px;
  font-weight: 600;
}

/* ---- Toast ---- */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--tab-h) + var(--sab) + 12px);
  transform: translateX(-50%) translateY(20px);
  z-index: 60;
  max-width: min(88vw, 420px);
  padding: 12px 18px;
  border-radius: 999px;
  background: #1f2437;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast--warn {
  background: #7c2d12;
}

.toast--error {
  background: var(--danger);
}

/* ---- Home ---- */

.hero {
  padding: 18px 16px;
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  border: 0;
  color: #fff;
}

.hero__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.hero__level {
  margin: 0;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.1;
}

.hero__points {
  margin: 2px 0 0;
  font-size: 14px;
  opacity: 0.9;
}

.hero__streak {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.hero__streak-flame {
  font-size: 18px;
}

.hero .progress {
  background: rgba(255, 255, 255, 0.25);
}

.hero .progress__fill {
  background: #fff;
}

.hero__next {
  margin: 10px 0 0;
  font-size: 13px;
  opacity: 0.9;
}

.continue {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px;
  text-decoration: none;
  color: var(--text);
  position: relative;
}

.continue__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
}

.continue__title {
  font-size: 17px;
  font-weight: 700;
}

.continue__cta {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.continue--done {
  color: var(--success);
}

.section-title,
.page-title {
  margin: 6px 2px 12px;
  font-size: 20px;
  font-weight: 800;
}

.page-title {
  margin-top: 0;
}

/* ---- Module grid (home) ---- */

.module-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.module-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  text-decoration: none;
  color: var(--text);
}

.module-card__num {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 18px;
  font-weight: 800;
}

.module-card--done .module-card__num {
  background: var(--success-bg);
  color: var(--success);
}

.module-card__body {
  min-width: 0;
}

.module-card__title {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
}

.module-card__meta {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--muted);
}

/* ---- Module detail ---- */

.module-head {
  margin-bottom: 16px;
}

.module-head__row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.module-head h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 800;
  line-height: 1.25;
}

.module-head__tagline {
  margin: 8px 0 12px;
  color: var(--muted);
  font-size: 15px;
}

.module-head__meta {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.lesson-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.lesson-row__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  min-height: 44px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  text-decoration: none;
  color: var(--text);
}

.lesson-row__link:active {
  background: var(--primary-soft);
}

.lesson-row__check {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border);
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.lesson-row__check.is-done {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

.lesson-row__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.lesson-row__title {
  font-size: 15px;
  font-weight: 700;
}

.lesson-row__meta {
  font-size: 13px;
  color: var(--muted);
}

.lesson-row__kind {
  flex: 0 0 auto;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
}

.lesson-row__kind--assessment {
  background: var(--warn-bg);
  color: var(--warn);
}

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

.lesson-head {
  margin-bottom: 16px;
}

.lesson-head__module {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

.lesson-head__title {
  margin: 4px 0 10px;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.2;
}

.lesson-intro {
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
}

.lesson-body {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 16px;
  margin-bottom: 14px;
}

.lesson-section h2 {
  margin: 16px 0 8px;
  font-size: 17px;
  font-weight: 700;
}

.lesson-section p {
  margin: 0 0 10px;
  color: #2a2f45;
}

.lesson-section ul {
  margin: 0 0 12px;
  padding-left: 20px;
}

.lesson-section li {
  margin-bottom: 6px;
}

.reading {
  background: #f6f7fd;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 14px;
}

.reading h2 {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 700;
}

.reading p {
  margin: 0 0 8px;
  font-size: 14.5px;
  color: #2a2f45;
}

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

/* ---- Quiz ---- */

.quiz {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 14px;
}

.quiz__badge {
  display: inline-block;
  padding: 4px 10px;
  margin-bottom: 10px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

.quiz__title {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 800;
}

.quiz__hint {
  margin: 0 0 14px;
  font-size: 13.5px;
  color: var(--muted);
}

.quiz-host__loading {
  padding: 24px;
  text-align: center;
  color: var(--muted);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.quiz__questions {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.quiz-question__prompt {
  margin: 0 0 10px;
  font-size: 15.5px;
  font-weight: 600;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-option {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 48px;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: #fbfbfe;
  color: var(--text);
  font-size: 15px;
  text-align: left;
  cursor: pointer;
  touch-action: manipulation;
}

.quiz-option:active {
  background: var(--primary-soft);
}

.quiz-option.is-selected {
  border-color: var(--primary);
  background: var(--primary-soft);
  font-weight: 600;
}

.quiz-option.is-correct {
  border-color: var(--success);
  background: var(--success-bg);
}

.quiz-option.is-wrong {
  border-color: var(--danger);
  background: var(--danger-bg);
}

.quiz-option:disabled {
  cursor: default;
}

.quiz-option__key {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--border);
  font-size: 13px;
  font-weight: 800;
}

.quiz-option.is-selected .quiz-option__key {
  background: var(--primary);
  color: #fff;
}

.quiz-option.is-correct .quiz-option__key {
  background: var(--success);
  color: #fff;
}

.quiz-option.is-wrong .quiz-option__key {
  background: var(--danger);
  color: #fff;
}

.quiz-option__text {
  flex: 1;
  min-width: 0;
}

.quiz__submit {
  width: 100%;
}

.quiz-result {
  margin-top: 14px;
  padding: 16px;
  border-radius: 14px;
}

.quiz-result--pass {
  background: var(--success-bg);
  border: 1px solid #bfe6cb;
}

.quiz-result--fail {
  background: var(--warn-bg);
  border: 1px solid #f3d9ab;
}

.quiz-result__score {
  margin: 0;
  font-size: 30px;
  font-weight: 800;
}

.quiz-result__detail {
  margin: 2px 0 0;
  font-size: 14px;
  font-weight: 600;
}

.quiz-result__verdict {
  margin: 8px 0 0;
  font-size: 15px;
}

.quiz-result__sync {
  margin: 4px 0 12px;
  font-size: 13px;
  color: var(--muted);
}

.quiz-result__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---- Orientation (home entry + view) ---- */

.start {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  text-decoration: none;
  color: var(--text);
  border: 1.5px solid #d7c9ff;
  background: linear-gradient(135deg, #f5f3ff, #ede9fe);
}

.start__icon {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
}

.start__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.start__label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--primary);
}

.start__title {
  font-size: 17px;
  font-weight: 800;
}

.start__meta {
  font-size: 13px;
  color: var(--muted);
}

.start__cta {
  flex: 0 0 auto;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  white-space: nowrap;
}

.progression {
  display: flex;
  flex-direction: column;
}

.progression__step {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fbfbfe;
}

.progression__label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--primary);
}

.progression__title {
  margin: 2px 0 0;
  font-size: 16px;
  font-weight: 700;
}

.progression__note {
  margin: 2px 0 0;
  font-size: 13px;
  color: var(--muted);
}

.progression__arrow {
  text-align: center;
  color: var(--muted);
  font-size: 18px;
  padding: 4px 0;
}

.build-loop {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 14px;
}

.build-loop__row {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
}

.build-loop__step {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--primary);
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  font-size: 15px;
  text-align: center;
}

.build-loop__arrow {
  color: var(--muted);
  font-size: 18px;
  padding: 2px 0;
}

.build-loop__back {
  margin-top: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--warn-bg);
  color: var(--warn);
  font-size: 13px;
  font-weight: 700;
}

.build-loop-map {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.build-loop-map__row {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
}

.build-loop-map__row strong {
  flex: 0 0 auto;
  min-width: 72px;
  color: var(--accent);
}

.build-loop-map__row span {
  flex: 1;
  min-width: 0;
  color: #2a2f45;
}

.role-shift__row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 12px;
}

.role-shift__from {
  background: #f6f7fd;
  border: 1px solid var(--border);
}

.role-shift__to {
  background: var(--success-bg);
  border: 1px solid #bfe6cb;
}

.role-shift__tag {
  flex: 0 0 auto;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.role-shift__from .role-shift__tag {
  background: var(--border);
  color: var(--muted);
}

.role-shift__to .role-shift__tag {
  background: var(--success);
  color: #fff;
}

.role-shift__row p {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.role-shift__arrow {
  text-align: center;
  color: var(--muted);
  font-size: 18px;
  padding: 2px 0;
}

.diagnostic-prior {
  padding: 10px 12px;
  margin: 0 0 12px;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
}

.diagnostic-result {
  margin-top: 14px;
}

.diagnostic-result__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  border-radius: 14px;
  background: var(--primary-soft);
  border: 1px solid #d7c9ff;
}

.diagnostic-result__label {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
}

.diagnostic-result__meter {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--accent);
}

.diagnostic-result__text {
  margin: 0;
  font-size: 14.5px;
  color: #2a2f45;
}

/* ---- Progress view ---- */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.stat {
  margin: 0;
  padding: 12px;
  text-align: center;
}

.stat__value {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
}

.stat__label {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.stat__sub {
  margin: 2px 0 0;
  font-size: 11.5px;
  color: var(--muted);
}

.badge-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.badge-card {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f6f7fd;
  opacity: 0.55;
}

.badge-card.is-earned {
  background: #fff;
  opacity: 1;
  border-color: #d7c9ff;
}

.badge-card__icon {
  font-size: 22px;
}

.badge-card__label {
  margin: 6px 0 0;
  font-size: 14px;
  font-weight: 700;
}

.badge-card__desc {
  margin: 2px 0 0;
  font-size: 12px;
  color: var(--muted);
}

.module-summary {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.module-summary__row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.module-summary__check {
  flex: 0 0 auto;
  font-size: 18px;
  color: var(--border);
}

.module-summary__check.is-done {
  color: var(--success);
}

.module-summary__title {
  flex: 1;
  min-width: 0;
  font-size: 15px;
  font-weight: 600;
}

.module-summary__count {
  font-size: 13px;
  color: var(--muted);
}

/* ---- Settings ---- */

.field {
  display: block;
  margin-bottom: 12px;
}

.field__label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 600;
}

.field__input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  background: #fbfbfe;
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
}

.field__input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
}

.field--check {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  font-size: 15px;
  font-weight: 600;
}

.field--check input {
  width: 20px;
  height: 20px;
}

.empty {
  padding: 24px;
  text-align: center;
  color: var(--muted);
}

/* ---- Larger screens (degrade upward) ---- */

@media (min-width: 720px) {
  .view {
    max-width: 760px;
    padding-left: 24px;
    padding-right: 24px;
  }

  .module-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

/* Only devices with hover get hover affordances; touch stays tap-based. */
@media (hover: hover) and (pointer: fine) {
  .btn:hover {
    filter: brightness(1.04);
  }

  .quiz-option:hover {
    border-color: var(--primary);
  }

  .lesson-row__link:hover {
    background: var(--primary-soft);
  }
}

/* Respect users who prefer reduced motion. */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}