/* Incremental refinement of the original four themes. */
:root {
  scrollbar-color: var(--line) var(--bg);
  scrollbar-width: thin;
}
::-webkit-scrollbar {
  width: 9px;
  height: 9px;
}
::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
body {
  overflow-wrap: break-word;
}
.lumen-3d-icon {
  border: 0 !important;
  box-shadow: none !important;
  filter: none !important;
  background: transparent !important;
}
.lumen-recovery {
  position: fixed;
  inset: 8%;
  z-index: 200000;
  background: var(--surface, #202329);
  color: var(--text, #fff);
  padding: 32px;
  border: 2px solid #b8c6f5;
  border-radius: 20px;
  overflow: auto;
}
.lumen-recovery button {
  margin: 8px;
  padding: 12px;
}
#storageNotice {
  position: sticky;
  top: 0;
  z-index: 100000;
  background: #652d24;
  color: #fff;
  padding: 12px 20px;
  font-weight: 600;
}
#storageNotice[hidden] {
  display: none;
}
.lumen-onboard {
  overflow: auto;
}
.lumen-onboard-card {
  max-height: calc(100dvh - 40px);
  overflow: auto;
}
.lumen-plan-form {
  display: grid;
  gap: 16px;
}
.lumen-plan-form label {
  display: grid;
  gap: 6px;
}
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.activity-card {
  padding: 22px;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 10px;
  color: var(--text);
  min-width: 0;
}
.activity-card p {
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0;
}
.activity-card .btn {
  margin-top: auto;
}
.activity-art {
  width: 76px;
  height: 76px;
  display: block;
  margin-bottom: 2px;
  filter: drop-shadow(0 10px 13px rgba(0, 0, 0, 0.14));
}
.activity-art img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}
.activity-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.3;
  margin: 2px 0;
}
.activity-session {
  max-width: 800px;
  margin: 0 auto;
  padding: clamp(18px, 4vw, 34px);
}
.activity-session h3 {
  font-size: 1.5rem;
  line-height: 1.45;
}
.activity-answers {
  display: grid;
  gap: 10px;
  margin: 24px 0;
}
.activity-answers button {
  text-align: left;
  white-space: normal;
  justify-content: flex-start;
  padding: 15px;
}
.word-bank,
.word-answer {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  margin: 16px 0;
  min-height: 65px;
}
.word-answer {
  background: var(--accent-soft);
}
.word-bank button {
  min-width: 44px;
}
.activity-feedback {
  margin: 20px 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  background: var(--surface-2);
}
.study-plan {
  padding: 24px;
  margin-top: 22px;
}
.plan-steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}
.plan-step {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 13px;
}
.plan-step h4 {
  margin: 5px 0 10px;
}
.plan-step p {
  font-size: 0.78rem;
  color: var(--muted);
}
.plan-step .btn {
  white-space: normal;
  width: 100%;
}
.page-content {
  min-width: 0;
}
.translator-card {
  overflow: visible;
}
.lumen-lang-menu {
  z-index: 200;
}
.lumen-lang-trigger {
  white-space: normal;
  text-align: left;
}
button:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}
.btn {
  min-height: 40px;
}
.settings-card input[type="checkbox"] {
  flex: none;
}
@media (max-width: 900px) {
  .activity-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .plan-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 520px) {
  .activity-grid,
  .plan-steps {
    grid-template-columns: 1fr;
  }
  .study-plan {
    padding: 18px;
  }
  .page-heading {
    align-items: flex-start;
  }
  .activity-session .toolbar {
    flex-wrap: wrap;
  }
  .lumen-onboard {
    padding: 12px;
  }
  .lumen-onboard-card {
    padding: 22px;
    max-height: calc(100dvh - 24px);
  }
}

/* Integrated visual refinement: global decorative backgrounds and compact
   controls. These layers never receive pointer events and remain behind all
   application surfaces. */
:root {
  --background-intensity: .25;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: var(--background-intensity);
}
html[data-background="aurora"] body::before {
  background:
    radial-gradient(60rem 42rem at 82% -8%, color-mix(in srgb, var(--accent) 55%, #3478d4), transparent 68%),
    radial-gradient(48rem 36rem at 30% 108%, color-mix(in srgb, var(--accent) 52%, #6e47c8), transparent 70%);
}
html[data-background="grid"] body::before {
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 32%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 32%, transparent) 1px, transparent 1px),
    radial-gradient(circle at 72% 12%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 36%);
  background-size: 44px 44px, 44px 44px, auto;
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 88%);
  mask-image: linear-gradient(to bottom, #000, transparent 88%);
}
html[data-background="waves"] body::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='900' height='420' viewBox='0 0 900 420'%3E%3Cg fill='none' stroke='%23a990ff' stroke-opacity='.34' stroke-width='1.4'%3E%3Cpath d='M-80 80C100 5 230 160 420 82S730 4 980 95'/%3E%3Cpath d='M-90 180C90 105 240 260 430 182S740 105 990 195'/%3E%3Cpath d='M-70 285C120 205 255 360 445 282S760 205 990 300'/%3E%3C/g%3E%3C/svg%3E"),
    radial-gradient(circle at 80% 10%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 42%);
  background-repeat: repeat-x, no-repeat;
  background-size: min(900px, 100vw) 420px, auto;
}
html[data-background="off"] body::before {
  display: none;
}
.app-shell {
  position: relative;
  z-index: 1;
}

/* Centre the visible owl artwork, not only its source canvas. */
.brand-mark {
  width: 54px;
  height: 54px;
  padding: 3px;
  place-items: center;
}
.brand-mark .brand-luma-avatar {
  width: 48px !important;
  height: 48px !important;
  object-position: center;
  transform: none;
}
.brand > div:last-child {
  min-width: 0;
  align-self: center;
}

/* Simple vector audio is clearer than detailed 3D artwork at 20–22 px. */
.audio-action-icon {
  width: 21px !important;
  height: 21px !important;
  color: currentColor;
  flex: 0 0 21px;
  margin: 0;
  filter: none;
}
.btn .audio-action-icon,
.listen-play .audio-action-icon {
  margin: 0;
}
.listen-play,
.icon-btn {
  min-width: 42px;
  min-height: 42px;
}
.btn:active:not(:disabled),
.icon-btn:active:not(:disabled),
.listen-play:active:not(:disabled) {
  transform: translateY(1px) scale(.985);
}
.btn:disabled .audio-action-icon,
.listen-play:disabled .audio-action-icon {
  opacity: .72;
}

.background-settings {
  margin-top: 18px;
}
.background-settings .section-row {
  align-items: flex-start;
  gap: 16px;
}
.background-style-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0 8px;
}
.background-style-option {
  min-width: 0;
  padding: 11px;
  color: var(--text);
  text-align: left;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-2);
  transition: border-color .18s ease, background .18s ease, transform .18s ease, box-shadow .18s ease;
}
.background-style-option:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}
.background-style-option.selected {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, var(--surface-2));
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 13%, transparent);
}
.background-style-option:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 58%, transparent);
  outline-offset: 2px;
}
.background-style-option strong,
.background-style-option small {
  display: block;
}
.background-style-option strong {
  margin-top: 9px;
  font-size: .92rem;
}
.background-style-option small {
  margin-top: 2px;
  color: color-mix(in srgb, var(--muted) 88%, var(--text));
  font-size: max(.74rem, 12px);
  line-height: 1.4;
}
.background-preview {
  display: block;
  height: 72px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--line) 80%, transparent);
  background-color: var(--bg);
  overflow: hidden;
}
.preview-aurora {
  background:
    radial-gradient(circle at 75% 12%, color-mix(in srgb, var(--accent) 58%, #3678d4), transparent 58%),
    radial-gradient(circle at 10% 110%, #513884, transparent 62%), var(--bg);
}
.preview-grid {
  background-color: var(--bg);
  background-image: linear-gradient(color-mix(in srgb, var(--accent) 28%, transparent) 1px, transparent 1px), linear-gradient(90deg, color-mix(in srgb, var(--accent) 28%, transparent) 1px, transparent 1px);
  background-size: 13px 13px;
}
.preview-waves {
  background-color: var(--bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='210' height='72' viewBox='0 0 210 72'%3E%3Cg fill='none' stroke='%23a990ff' stroke-opacity='.52'%3E%3Cpath d='M-15 20C30-5 55 48 105 20S175-4 225 24'/%3E%3Cpath d='M-15 52C30 27 55 80 105 52S175 28 225 56'/%3E%3C/g%3E%3C/svg%3E");
  background-size: cover;
}
.preview-off {
  background: var(--bg);
}
.preview-off::after {
  content: "";
  display: block;
  width: 34px;
  height: 2px;
  margin: 34px auto 0;
  border-radius: 2px;
  background: color-mix(in srgb, var(--muted) 58%, transparent);
}
.range-control:disabled {
  opacity: .46;
  filter: grayscale(.45);
}

/* Small, targeted Home polish. */
.welcome-card .welcome-title {
  font-size: clamp(2.05rem, 3.25vw, 3.15rem);
  font-weight: 680;
}
.daily-card {
  justify-content: space-between;
}
.daily-phrase {
  line-height: 1.34;
}
.stat-top,
.stat-note,
.daily-translation {
  color: color-mix(in srgb, var(--muted) 88%, var(--text));
}

@media (max-width: 760px) {
  .brand-mark {
    width: 50px;
    height: 50px;
  }
  .brand-mark .brand-luma-avatar {
    width: 44px !important;
    height: 44px !important;
  }
  .background-style-grid {
    grid-template-columns: 1fr;
  }
  .background-preview {
    height: 58px;
  }
}

@media (max-width: 390px) {
  .background-settings .section-row {
    display: grid;
  }
  .background-settings .section-row .btn {
    width: 100%;
  }
}

/* Icon and typography refinement: preserve the established layout while
   giving the identity and compact controls a cleaner, higher-contrast finish. */
.brand {
  gap: 13px;
  padding: 5px 10px 24px;
  align-items: center;
}
.brand-mark {
  width: 52px;
  height: 52px;
  padding: 2px;
  border-radius: 17px;
  overflow: hidden;
  background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 24%, var(--surface-2)), var(--surface-2));
  border: 1px solid color-mix(in srgb, var(--accent) 36%, var(--line));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent) 24%, transparent), inset 0 1px 0 rgba(255,255,255,.1);
}
.brand-mark .lumen-refinement-icon {
  width: 48px !important;
  height: 48px !important;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,.24));
}
.brand-word {
  font-size: 1.18rem;
  letter-spacing: .14em;
  line-height: 1.05;
}
.brand-sub {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .075em;
  color: color-mix(in srgb, var(--muted) 82%, var(--text));
  margin-top: 5px;
}

.lumen-refinement-icon {
  display: inline-block;
  flex: none;
  object-fit: contain;
  vertical-align: middle;
  pointer-events: none;
}
.settings-nav {
  padding: 11px;
}
.settings-nav button {
  min-height: 48px;
  gap: 11px;
  padding: 10px 12px;
  font-size: .86rem;
  border: 1px solid transparent;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.settings-nav .settings-category-icon {
  width: 27px !important;
  height: 27px !important;
  border-radius: 8px;
  filter: drop-shadow(0 3px 5px rgba(0,0,0,.24));
  transition: transform .18s ease, filter .18s ease;
}
.settings-nav button:hover {
  border-color: color-mix(in srgb, var(--accent) 24%, transparent);
  transform: translateX(2px);
}
.settings-nav button.active {
  border-color: color-mix(in srgb, var(--accent) 30%, var(--line));
  box-shadow: inset 3px 0 0 var(--accent), 0 5px 14px color-mix(in srgb, var(--accent) 10%, transparent);
}
.settings-nav button.active .settings-category-icon {
  transform: scale(1.06);
  filter: drop-shadow(0 4px 7px color-mix(in srgb, var(--accent) 40%, transparent));
}

.audio-action-icon {
  width: 22px !important;
  height: 22px !important;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.22));
}
.btn .audio-action-icon,
.listen-play .audio-action-icon {
  margin: -2px 1px -2px -1px;
}
.icon-btn .lumen-3d-icon,
.btn-small .lumen-3d-icon,
.btn-small .lumen-refinement-icon {
  filter: drop-shadow(0 1px 2px rgba(0,0,0,.2));
}

.muted,
.small,
.tiny,
.field-help,
.setting-copy,
.settings-desc,
.stat-note,
.vocab-note,
.achievement-item p,
.cosmetic-item p {
  color: color-mix(in srgb, var(--muted) 89%, var(--text));
}
.field-help,
.setting-copy,
.vocab-note,
.achievement-item p,
.cosmetic-item p,
.mission-sub {
  line-height: 1.55;
}
.field-help,
.vocab-note,
.mission-sub {
  font-size: max(.78rem, 12px);
}
.settings-desc {
  font-size: max(.91rem, 14px);
}
.setting-title,
.vocab-word,
.achievement-item strong,
.cosmetic-item > strong {
  letter-spacing: .002em;
}
.vocab-item,
.achievement-item,
.cosmetic-item {
  transition: border-color .18s ease, background .18s ease, transform .18s ease, box-shadow .18s ease;
}
.vocab-item:hover,
.achievement-item:hover,
.cosmetic-item:hover {
  border-color: color-mix(in srgb, var(--accent) 30%, var(--line));
  box-shadow: 0 8px 18px color-mix(in srgb, #000 10%, transparent);
}
.study-tab:focus-visible,
.settings-nav button:focus-visible,
.vocab-item:focus-visible,
.btn:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 58%, transparent);
  outline-offset: 2px;
}

@media (max-width: 760px) {
  .brand-mark {
    width: 48px;
    height: 48px;
    border-radius: 15px;
  }
  .brand-mark .lumen-refinement-icon {
    width: 44px !important;
    height: 44px !important;
  }
  .settings-nav button {
    min-height: 46px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

/* Premium visual pass: larger type, calmer spacing and selective 3D artwork. */
:root {
  --radius: 22px;
  --radius-sm: 14px;
}
body {
  font-size: 1rem;
  line-height: 1.62;
  letter-spacing: 0.002em;
}
.sidebar {
  padding-inline: 18px;
}
.nav-item {
  min-height: 46px;
  font-size: 0.94rem;
  border-radius: 13px;
}
.nav-item svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.8;
}
.page-title {
  font-size: clamp(2rem, 3vw, 2.65rem);
  line-height: 1.12;
}
.page-content {
  padding-block: clamp(24px, 3vw, 38px);
}
.page-heading h2 {
  font-size: clamp(1.55rem, 2.6vw, 2rem);
  line-height: 1.2;
}
.page-heading p,
.welcome-card .welcome-copy,
.home-game-copy p,
.activity-card p,
.settings-desc,
.setting-copy {
  font-size: max(0.9rem, 14px);
  line-height: 1.65;
}
.btn {
  min-height: 44px;
  padding: 10px 16px;
  font-size: 0.9rem;
  border-radius: 12px;
}
.btn-small {
  min-height: 38px;
  font-size: 0.82rem;
}
.surface {
  box-shadow: 0 12px 34px color-mix(in srgb, #000 10%, transparent);
}
.hero-grid {
  grid-template-columns: minmax(0, 1.45fr) minmax(290px, 0.72fr);
  gap: 20px;
}
.welcome-card {
  min-height: 310px;
  padding: clamp(28px, 3.4vw, 44px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(170px, 34%);
  align-items: center;
  gap: 20px;
  background:
    radial-gradient(circle at 88% 18%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 34%),
    linear-gradient(145deg, color-mix(in srgb, var(--surface) 94%, var(--accent)), var(--surface));
}
.welcome-card::after {
  display: none;
}
.welcome-content {
  position: relative;
  z-index: 2;
}
.welcome-card .welcome-title {
  font-size: clamp(2.15rem, 3.5vw, 3.35rem);
  max-width: 680px;
  margin-block: 9px 15px;
}
.welcome-card .welcome-copy {
  max-width: 600px;
  margin-bottom: 26px;
}
.welcome-luma,
.home-luma-art,
.stat-art {
  display: block;
}
.welcome-luma img,
.home-luma-art img,
.stat-art img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}
.welcome-luma {
  width: min(100%, 285px);
  justify-self: end;
  align-self: end;
  filter: drop-shadow(0 18px 20px rgba(0, 0, 0, 0.16));
}
.daily-card {
  min-height: 310px;
  padding: 28px;
}
.daily-label,
.eyebrow {
  font-size: max(0.72rem, 12px);
}
.daily-phrase {
  font-size: clamp(1.3rem, 2vw, 1.6rem);
}
.stats-grid {
  gap: 18px;
  margin-block: 26px 34px;
}
.stat-card {
  min-height: 150px;
  padding: 21px 22px;
}
.stat-top {
  font-size: max(0.8rem, 13px);
}
.stat-value {
  font-size: clamp(1.8rem, 2.5vw, 2.25rem);
  margin-top: 16px;
}
.stat-note {
  font-size: max(0.78rem, 13px);
}
.stat-art {
  width: 48px;
  height: 48px;
  margin-top: -5px;
  margin-right: -4px;
  filter: drop-shadow(0 8px 10px rgba(0, 0, 0, 0.14));
}
.home-game-panel {
  grid-template-columns: 150px minmax(0, 1fr) 180px;
  gap: 28px;
  padding: clamp(24px, 3vw, 34px);
  margin-top: 30px;
}
.home-luma-art {
  width: 150px;
  aspect-ratio: 1;
  filter: drop-shadow(0 14px 16px rgba(0, 0, 0, 0.14));
}
.home-game-copy h3,
.section-row h3 {
  font-size: clamp(1.15rem, 1.7vw, 1.35rem);
}
.home-level {
  padding: 18px;
  border-radius: 16px;
}
.home-level span,
.home-level small {
  font-size: max(0.7rem, 12px);
}
.home-level strong {
  font-size: 2rem;
}
.mission-art {
  background: transparent;
  border: 0;
  overflow: visible;
}
.mission-art picture,
.mission-art img,
.progress-luma-art picture,
.progress-luma-art img,
.reward-art picture,
.reward-art img,
.wallet-art,
.wallet-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.mission-art picture {
  width: 42px;
  height: 42px;
}
.progress-luma-art {
  width: 150px;
  align-self: end;
  filter: drop-shadow(0 14px 16px rgba(0, 0, 0, 0.15));
}
.reward-art {
  width: 58px;
  height: 58px;
  flex: none;
}
.wallet-art {
  width: 32px;
  height: 32px;
}
.progress-hero-wallet > span {
  display: flex;
  align-items: center;
  gap: 8px;
}
.study-plan,
.mission-panel,
.activity-card,
.settings-card {
  padding: clamp(20px, 2.6vw, 30px);
}
.plan-step p,
.small,
.muted.small {
  font-size: max(0.82rem, 13px);
}

@media (max-width: 1100px) {
  .welcome-card {
    grid-template-columns: minmax(0, 1fr) 190px;
  }
  .home-game-panel {
    grid-template-columns: 120px minmax(0, 1fr);
  }
  .home-luma-art {
    width: 120px;
  }
  .home-level {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .welcome-card {
    min-height: 0;
    grid-template-columns: minmax(0, 1fr) 150px;
  }
  .daily-card {
    min-height: 245px;
  }
  .home-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .page-content {
    padding-block: 18px 28px;
  }
  .welcome-card {
    padding: 23px;
    display: block;
  }
  .welcome-card .welcome-title {
    font-size: clamp(2rem, 10vw, 2.55rem);
  }
  .welcome-luma {
    width: 145px;
    margin: -12px auto -18px;
  }
  .welcome-actions .btn {
    width: 100%;
    justify-content: center;
  }
  .home-stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .stat-card {
    min-height: 138px;
    padding: 17px;
  }
  .stat-art {
    width: 42px;
    height: 42px;
  }
  .home-game-panel {
    grid-template-columns: 86px minmax(0, 1fr);
    padding: 20px;
  }
  .home-luma-art {
    width: 86px;
  }
}

@media (max-width: 380px) {
  .home-stats {
    grid-template-columns: 1fr;
  }
  .home-game-panel {
    display: block;
  }
  .home-luma-art {
    width: 105px;
    margin: 0 auto 12px;
  }
}
/* Visibility must change synchronously so keyboard focus can enter the listbox. */
.lumen-lang-menu {
  transition:
    opacity 0.18s,
    transform 0.18s;
}

/* Corrective pass: explicit, accessible exercise feedback. */
.activity-answers .btn {
  position: relative;
  gap: 12px;
}
.activity-answers .btn:disabled {
  opacity: 0.8;
  cursor: default;
}
.activity-answers .btn.is-selected {
  border-width: 2px;
}
.activity-answers .btn.is-correct {
  border-color: var(--success);
  background: color-mix(in srgb, var(--success) 14%, var(--surface-2));
  color: var(--text);
}
.activity-answers .btn.is-wrong {
  border-color: var(--danger);
  background: color-mix(in srgb, var(--danger) 12%, var(--surface-2));
  color: var(--text);
}
.answer-mark {
  margin-left: auto;
  font-size: 1.15em;
  font-weight: 900;
}
.activity-feedback {
  outline: none;
}
.activity-feedback.is-correct {
  border-left-color: var(--success);
}
.activity-feedback.is-wrong {
  border-left-color: var(--danger);
}
.feedback-explanation {
  color: var(--muted);
  line-height: 1.55;
}

/* Reserve real grid space for artwork; no absolute positioning or collisions. */
.progress-hero {
  grid-template-columns: minmax(125px, 150px) minmax(0, 1fr) minmax(120px, 145px);
  gap: clamp(18px, 2.4vw, 30px);
  overflow: hidden;
}
.progress-luma-art {
  width: 100%;
  max-width: 145px;
  align-self: center;
}
.progress-hero-main,
.mission-main {
  min-width: 0;
}
.progress-hero-main p,
.mission-sub,
.settings-desc {
  line-height: 1.55;
}
.mission-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: start;
  gap: 10px;
}
.mission-art,
.mission-art picture {
  width: 34px;
  height: 34px;
}
.mission-title {
  font-size: max(0.82rem, 13px);
  line-height: 1.35;
}
.mission-sub {
  font-size: max(0.72rem, 12px);
}
.mission-state {
  align-self: start;
}
.progress-columns .mission-list {
  grid-template-columns: 1fr;
}
.speech-auto-setting {
  margin-top: 16px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

@media (max-width: 900px) {
  .progress-hero {
    grid-template-columns: 105px minmax(0, 1fr);
  }
  .progress-luma-art {
    max-width: 105px;
  }
  .progress-hero-wallet {
    grid-column: 1 / -1;
  }
}

@media (max-width: 520px) {
  .progress-hero {
    grid-template-columns: 82px minmax(0, 1fr);
    text-align: left;
    padding: 18px;
  }
  .progress-luma-art {
    max-width: 82px;
    align-self: start;
  }
  .progress-hero-wallet {
    grid-column: 1 / -1;
  }
  .mission-row {
    grid-template-columns: 30px minmax(0, 1fr);
  }
  .mission-art,
  .mission-art picture {
    width: 30px;
    height: 30px;
  }
  .mission-state {
    grid-column: 2;
    justify-self: start;
  }
}

/* Final cascade guard for the approved Home proportions. */
.welcome-card .welcome-title {
  font-size: clamp(2.05rem, 3.25vw, 3.15rem);
  font-weight: 680;
}
@media (max-width: 520px) {
  .welcome-card .welcome-title {
    font-size: clamp(1.9rem, 9.4vw, 2.4rem);
  }
}

/* Acabamento localizado: cantos do Tradutor, ícones vetoriais e rolagem. */
.translator-card {
  overflow: hidden;
  border-radius: var(--radius);
  isolation: isolate;
}
.translator-controls {
  border-radius: var(--radius) var(--radius) 0 0;
  background-clip: padding-box;
}

.lucide-icon {
  display: inline-block;
  flex: 0 0 auto;
  vertical-align: middle;
  color: currentColor;
}
.btn,
.rule-row > span,
.challenge-hero-stats span,
.challenge-bottom-stats span,
.heart-row,
.challenge-feedback strong {
  align-items: center;
}
.btn,
.rule-row > span,
.challenge-hero-stats span,
.challenge-bottom-stats span,
.heart-row {
  display: inline-flex;
  gap: 8px;
}
.btn .lucide-icon,
.icon-btn .lucide-icon,
.swap-btn .lucide-icon {
  pointer-events: none;
}
.nav-item .lucide-icon {
  width: 20px;
  height: 20px;
  stroke-width: 1.9;
}
.audio-action-icon {
  width: 21px !important;
  height: 21px !important;
}
[aria-busy="true"] .audio-action-icon {
  animation: lumen-audio-pulse .9s ease-in-out infinite alternate;
}
.is-audio-error {
  border-color: color-mix(in srgb, var(--danger) 55%, var(--line)) !important;
  color: var(--danger) !important;
}
@keyframes lumen-audio-pulse {
  to { opacity: .52; transform: scale(.92); }
}

@media (min-width: 851px) {
  .sidebar {
    overflow: hidden;
    overscroll-behavior: contain;
  }
  .nav-list {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    scrollbar-gutter: stable;
  }
  .sidebar-spacer {
    flex: 0 0 4px;
  }
}

.field.is-disabled {
  opacity: .68;
}
.field.is-disabled .form-label,
.field.is-disabled .field-help {
  color: color-mix(in srgb, var(--muted) 82%, var(--text));
}
.form-control:disabled {
  cursor: not-allowed;
  background: color-mix(in srgb, var(--surface-2) 82%, var(--bg));
  border-color: color-mix(in srgb, var(--line) 78%, transparent);
}
.phase-status-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.phase-status {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-2);
}
.phase-status.is-open .lucide-icon {
  color: var(--success);
}
.phase-status.is-locked {
  color: var(--muted);
  opacity: .78;
}
.phase-status span,
.phase-status strong,
.phase-status small {
  min-width: 0;
  display: block;
}
.phase-status strong {
  color: var(--text);
  font-size: max(.78rem, 13px);
}
.phase-status small {
  margin-top: 1px;
  color: var(--muted);
  font-size: max(.7rem, 12px);
  line-height: 1.35;
}
.rule-row > span {
  min-width: 0;
}
.rule-row .lucide-icon {
  color: var(--accent);
}
.heart-row {
  gap: 4px;
  color: var(--danger);
}
.heart-row .is-lost {
  color: var(--muted);
  opacity: .55;
}
.challenge-feedback strong {
  display: flex;
  gap: 8px;
}

@media (max-width: 850px) {
  .sidebar {
    overflow: visible;
    overscroll-behavior: auto;
  }
  .nav-list {
    overscroll-behavior-x: contain;
    touch-action: auto;
  }
}
@media (max-width: 620px) {
  .phase-status-list {
    grid-template-columns: 1fr;
  }
  .translator-controls {
    border-radius: var(--radius) var(--radius) 0 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  [aria-busy="true"] .audio-action-icon {
    animation: none;
  }
}