:root {
  color-scheme: light;
  --color-brand-primary: #168A4A;
  --color-brand-deep: #1F6F68;
  --color-brand-mint: #BFE6D8;
  --color-bg-base: #FAF7F1;
  --color-bg-surface: #FFFFFF;
  --color-bg-soft: #F5F1EA;
  --color-text-primary: #111827;
  --color-text-secondary: #4B5563;
  --color-text-muted: #8A8F98;
  --color-text-inverse: #FFFFFF;
  --color-success: #168A4A;
  --color-warning: #F8C94A;
  --color-danger: #F9735B;
  --color-info: #2BA7C9;
  --color-review: #7C6BD8;
  --color-coral: #F6A38B;
  --color-border-soft: rgba(17, 24, 39, 0.08);
  --color-border-strong: rgba(17, 24, 39, 0.14);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --space-2xl: 32px;
  --shadow-card: 0 8px 24px rgba(17, 24, 39, 0.08);
  --shadow-soft: 0 4px 12px rgba(17, 24, 39, 0.06);
  --nav-height: 76px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--color-bg-base);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(246, 163, 139, 0.16), transparent 28%),
    linear-gradient(315deg, rgba(191, 230, 216, 0.28), transparent 26%),
    var(--color-bg-base);
  color: var(--color-text-primary);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

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

button {
  border: 0;
}

svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: var(--space-xs);
  font-size: clamp(1.72rem, 8vw, 2.05rem);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: var(--space-md);
  font-size: 1.16rem;
  line-height: 1.18;
}

h3 {
  margin-bottom: var(--space-sm);
  font-size: 1rem;
  line-height: 1.25;
}

.app-shell {
  width: min(100% - 24px, 430px);
  margin: 0 auto;
  padding: 18px 0 calc(var(--nav-height) + 26px);
}

.app-header {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.screen-heading {
  min-width: 0;
}

.eyebrow,
.card-kicker,
.prompt-kicker {
  margin: 0 0 var(--space-xs);
  color: var(--color-brand-deep);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
}

.screen-subtitle,
.muted {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.94rem;
  line-height: 1.45;
}

select,
input,
textarea {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  padding: 0 var(--space-md);
}

select:focus,
input:focus,
textarea:focus {
  border-color: var(--color-brand-primary);
  outline: 3px solid rgba(22, 138, 74, 0.14);
}

.screen {
  outline: none;
}

.app-nav {
  position: fixed;
  left: 50%;
  bottom: 12px;
  z-index: 30;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 3px;
  width: min(100% - 18px, 430px);
  min-height: var(--nav-height);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-xl);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 18px 44px rgba(17, 24, 39, 0.13);
  padding: 7px;
  transform: translateX(-50%);
  backdrop-filter: blur(18px);
}

.nav-brand {
  display: none;
}

.nav-item {
  display: grid;
  place-items: center;
  gap: 3px;
  min-width: 0;
  min-height: 58px;
  border-radius: var(--radius-lg);
  background: transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.68rem;
  font-weight: 700;
}

.nav-icon {
  width: 21px;
  height: 21px;
}

.nav-item.active {
  color: var(--color-brand-primary);
  background: #F0FAF4;
}

.primary,
.secondary,
.mini-button,
.danger-button,
.compact {
  min-height: 52px;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 750;
}

.primary {
  background: var(--color-brand-primary);
  color: var(--color-text-inverse);
  padding: 0 var(--space-lg);
  box-shadow: var(--shadow-soft);
}

.secondary,
.mini-button {
  border: 1px solid var(--color-border-strong);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  padding: 0 var(--space-lg);
}

.mini-button {
  min-height: 36px;
  border-radius: var(--radius-sm);
  padding: 0 var(--space-md);
}

.danger-button {
  background: #FFF1ED;
  color: var(--color-danger);
  border: 1px solid rgba(249, 115, 91, 0.28);
  padding: 0 var(--space-lg);
}

.compact {
  min-height: 42px;
}

.app-card {
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  box-shadow: var(--shadow-card);
}

.card-pad {
  padding: var(--space-lg);
}

.home-layout,
.home-primary,
.home-secondary,
.lesson-layout,
.review-layout,
.progress-layout,
.progress-side,
.profile-layout,
.translation-layout {
  display: grid;
  gap: var(--space-lg);
}

.daily-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-lg);
}

.goal-ring {
  --angle: 0deg;
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: conic-gradient(var(--color-brand-primary) var(--angle), #E9ECE8 0);
}

.goal-ring-inner {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-bg-surface);
  font-size: 1.35rem;
  font-weight: 850;
}

.course-card {
  position: relative;
  overflow: hidden;
  min-height: 156px;
  border-radius: var(--radius-xl);
  background: var(--color-brand-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
}

.course-card h2 {
  max-width: 66%;
  margin-bottom: var(--space-xs);
  font-size: 1.45rem;
}

.course-card p {
  position: relative;
  z-index: 1;
  max-width: 68%;
  color: rgba(255, 255, 255, 0.86);
}

.course-card .card-kicker {
  color: rgba(255, 255, 255, 0.84);
}

.course-card .mini-button {
  position: relative;
  z-index: 1;
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.17);
  color: white;
}

.home-language-field {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-xs);
  max-width: min(100%, 260px);
  margin-top: var(--space-md);
}

.home-language-field span {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.78rem;
  font-weight: 800;
}

.home-language-select {
  min-height: 42px;
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.18);
  color: white;
  font-weight: 800;
}

.home-language-select option {
  color: var(--color-text-primary);
}

.landmark-art {
  position: absolute;
  right: 16px;
  bottom: 14px;
  width: 120px;
  height: 104px;
}

.landmark-art::before {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 112px;
  height: 70px;
  border-radius: 42px 42px 18px 18px;
  background: rgba(191, 230, 216, 0.7);
}

.landmark-art span {
  position: absolute;
  bottom: 16px;
  width: 30px;
  border-radius: 8px 8px 3px 3px;
  background: var(--color-warning);
}

.landmark-art span:nth-child(1) {
  right: 64px;
  height: 48px;
  background: var(--color-coral);
}

.landmark-art span:nth-child(2) {
  right: 34px;
  height: 70px;
}

.landmark-art span:nth-child(3) {
  right: 6px;
  height: 42px;
  background: #F1D5A1;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  align-items: start;
  margin-bottom: var(--space-md);
}

.status-dot {
  display: grid;
  place-items: center;
  min-width: 30px;
  height: 30px;
  border-radius: var(--radius-pill);
  background: var(--color-danger);
  color: white;
  font-size: 0.78rem;
  font-weight: 850;
}

.lesson-list {
  display: grid;
  gap: var(--space-sm);
}

.lesson-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: var(--space-md);
  align-items: center;
  min-height: 72px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface);
  padding: var(--space-md);
  text-align: left;
  cursor: pointer;
}

.lesson-copy {
  display: grid;
  gap: 2px;
}

.lesson-copy small,
.lesson-meta,
.saved-word span {
  color: var(--color-text-secondary);
  font-size: 0.78rem;
}

.lesson-meta {
  white-space: nowrap;
}

.tile-icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  color: var(--color-text-inverse);
  font-size: 0.82rem;
  font-weight: 850;
}

.tile-icon.grammar {
  background: var(--color-danger);
}

.tile-icon.review {
  background: var(--color-review);
}

.tile-icon.listen {
  background: var(--color-info);
}

.tile-icon.book {
  background: var(--color-warning);
  color: var(--color-text-primary);
}

.tile-icon.progress {
  background: var(--color-brand-primary);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
}

.quick-card {
  display: grid;
  gap: var(--space-sm);
  min-height: 130px;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  box-shadow: var(--shadow-soft);
  padding: var(--space-md);
  text-align: left;
  cursor: pointer;
}

.quick-card small {
  color: var(--color-text-secondary);
}

.next-card {
  display: grid;
  gap: var(--space-sm);
}

.lesson-phone {
  padding: var(--space-lg);
}

.lesson-top {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto 34px;
  gap: var(--space-md);
  align-items: center;
  margin-bottom: var(--space-xl);
}

.ghost-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-primary);
  cursor: pointer;
  font-size: 1.6rem;
  line-height: 1;
}

.settings-icon svg {
  width: 20px;
  height: 20px;
}

.lesson-track {
  height: 7px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: #E9ECE8;
}

.lesson-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--color-brand-primary);
}

.lesson-count {
  color: var(--color-text-secondary);
  font-size: 0.84rem;
  font-weight: 700;
}

.prompt-card {
  position: relative;
  margin-bottom: var(--space-lg);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  box-shadow: var(--shadow-soft);
  padding: var(--space-xl);
}

.prompt {
  max-width: calc(100% - 48px);
  margin-bottom: var(--space-lg);
  font-size: clamp(1.8rem, 9vw, 2.6rem);
  font-weight: 650;
  line-height: 1.28;
  overflow-wrap: anywhere;
}

.audio-button {
  position: absolute;
  right: var(--space-md);
  top: var(--space-md);
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-bg-soft);
  color: var(--color-text-primary);
  cursor: pointer;
}

.audio-button svg {
  width: 22px;
}

.audio-button:disabled,
.inline-audio:disabled,
.audio-chip:disabled {
  cursor: not-allowed;
  opacity: 0.46;
}

.inline-audio,
.audio-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  border: 1px solid var(--color-border-soft);
  background: var(--color-bg-surface);
  color: var(--color-brand-deep);
  cursor: pointer;
  font-weight: 800;
}

.inline-audio {
  flex: 0 0 auto;
  width: 36px;
  height: 36px;
  border-radius: 50%;
}

.inline-audio span {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.inline-audio svg {
  width: 18px;
  height: 18px;
}

.audio-chip {
  min-height: 42px;
  border-radius: var(--radius-md);
  padding: 0 var(--space-md);
  box-shadow: var(--shadow-soft);
}

.audio-chip svg {
  width: 18px;
  height: 18px;
}

.prompt-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.prompt-chips span,
.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  border-radius: var(--radius-sm);
  background: #EEF3F5;
  color: var(--color-text-secondary);
  padding: 0 var(--space-md);
  font-size: 0.78rem;
  font-weight: 700;
}

.grammar-note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  border-radius: var(--radius-lg);
  background: #F4F0FF;
  padding: var(--space-lg);
}

.grammar-note p {
  margin: var(--space-xs) 0 0;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

.note-icon {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-review);
  color: white;
  font-weight: 850;
}

.answer-label {
  margin-bottom: var(--space-md);
  font-weight: 750;
}

.option-list {
  display: grid;
  gap: var(--space-md);
}

.option {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-md);
  align-items: center;
  min-height: 58px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
  padding: var(--space-md);
  text-align: left;
  cursor: pointer;
}

.choice-dot {
  width: 20px;
  height: 20px;
  border: 1.5px solid var(--color-border-strong);
  border-radius: 50%;
}

.option.selected,
.option.correct {
  border-color: var(--color-brand-primary);
  background: #F0FAF4;
}

.option.selected .choice-dot,
.option.correct .choice-dot {
  border-color: var(--color-brand-primary);
  background: radial-gradient(circle, var(--color-brand-primary) 45%, transparent 48%);
}

.option.incorrect {
  border-color: var(--color-danger);
  background: #FFF1ED;
}

.answer-row,
.button-row {
  display: grid;
  gap: var(--space-md);
}

.feedback {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-md);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  font-weight: 800;
}

.feedback.good {
  background: #F0FAF4;
  color: var(--color-success);
}

.feedback.bad {
  background: #FFF1ED;
  color: var(--color-danger);
}

.continue-button {
  width: 100%;
  margin-top: var(--space-xl);
}

.lesson-sidebar,
.settings-stack {
  display: grid;
  gap: var(--space-md);
}

.settings-sheet {
  position: fixed;
  inset: 0;
  z-index: 55;
  display: grid;
  place-items: end center;
  padding: var(--space-lg);
}

.settings-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 24, 39, 0.28);
  cursor: pointer;
}

.settings-panel {
  position: relative;
  z-index: 1;
  width: min(100%, 430px);
  max-height: min(720px, calc(100vh - 32px));
  overflow: auto;
}

.settings-title {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  align-items: start;
  margin-bottom: var(--space-md);
}

.field {
  display: grid;
  gap: var(--space-xs);
}

.field span,
.switch span {
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  font-weight: 750;
}

.metric-line {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  border-bottom: 1px solid var(--color-border-soft);
  padding: var(--space-sm) 0;
}

.metric-line span {
  color: var(--color-text-secondary);
}

.flashcard {
  display: grid;
  gap: var(--space-md);
  min-height: 230px;
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, #F4F0FF, #FFFFFF);
  padding: var(--space-xl);
}

.flash-word {
  margin: 0;
  font-size: clamp(2rem, 11vw, 3.8rem);
  font-weight: 800;
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.flash-answer {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 1.05rem;
}

.flashcard-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  align-self: end;
}

.queue-card {
  margin-top: var(--space-lg);
}

.review-table-wrap {
  overflow: auto;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
}

.review-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
}

.review-table th,
.review-table td {
  border-bottom: 1px solid var(--color-border-soft);
  padding: var(--space-md);
  text-align: left;
  vertical-align: top;
}

.review-table th {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.summary-tile {
  display: grid;
  gap: var(--space-xs);
  border-right: 1px solid var(--color-border-soft);
}

.summary-tile:last-child {
  border-right: 0;
}

.summary-tile strong {
  font-size: 1.4rem;
}

.summary-tile span {
  color: var(--color-text-secondary);
  font-size: 0.78rem;
}

.chart {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: var(--space-sm);
  align-items: end;
  height: 170px;
}

.chart-bar {
  display: grid;
  grid-template-rows: minmax(10px, 1fr) auto;
  gap: var(--space-sm);
  height: 100%;
  color: var(--color-text-muted);
  font-size: 0.72rem;
  text-align: center;
}

.chart-bar span {
  align-self: end;
  display: block;
  min-height: 4px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: var(--color-brand-primary);
}

.skill-row {
  display: grid;
  grid-template-columns: 102px minmax(0, 1fr) 40px;
  gap: var(--space-md);
  align-items: center;
  padding: var(--space-sm) 0;
}

.bar {
  height: 8px;
  overflow: hidden;
  border-radius: var(--radius-pill);
  background: #E9ECE8;
}

.bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--color-brand-primary);
}

.bar.info span {
  background: var(--color-info);
}

.bar.review span {
  background: var(--color-review);
}

.bar.warning span {
  background: var(--color-warning);
}

.saved-list {
  display: grid;
  gap: var(--space-sm);
}

.saved-word {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  border-bottom: 1px solid var(--color-border-soft);
  padding: var(--space-sm) 0;
}

.saved-word div {
  display: grid;
  gap: 2px;
}

.saved-actions {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

.bookmark {
  width: 16px;
  height: 22px;
  border: 1.5px solid var(--color-text-muted);
  border-bottom: 0;
  border-radius: 5px 5px 2px 2px;
}

.switch {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-height: 42px;
}

.switch input {
  width: 20px;
  min-height: 20px;
  accent-color: var(--color-brand-primary);
}

.translation-card,
.translation-result {
  display: grid;
  gap: var(--space-lg);
  padding: var(--space-lg);
}

.translation-intro {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  align-items: start;
}

.translation-intro h2 {
  margin-bottom: 0;
}

.local-badge {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  border-radius: var(--radius-pill);
  background: #F0FAF4;
  color: var(--color-brand-primary);
  padding: 0 var(--space-md);
  font-size: 0.76rem;
  font-weight: 850;
}

.translation-path {
  margin-top: var(--space-xs);
}

textarea {
  resize: vertical;
  min-height: 150px;
  padding: var(--space-md);
  line-height: 1.5;
}

.translation-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-md);
}

.translation-status {
  min-height: 1.45em;
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.86rem;
  line-height: 1.45;
}

.translation-output {
  min-height: 124px;
  margin: 0;
  border-radius: var(--radius-lg);
  background: #F0FAF4;
  padding: var(--space-xl);
  font-size: clamp(1.35rem, 6vw, 2rem);
  font-weight: 650;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.translation-output.empty {
  color: var(--color-text-muted);
  font-size: 1rem;
  font-weight: 600;
}

.login-panel {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  background: rgba(250, 247, 241, 0.94);
  padding: var(--space-xl);
}

.login-box {
  width: min(390px, 100%);
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-xl);
  background: var(--color-bg-surface);
  box-shadow: var(--shadow-card);
  padding: var(--space-2xl);
}

.login-box input,
.login-box button {
  width: 100%;
  margin-top: var(--space-md);
}

.error-text {
  min-height: 20px;
  margin: var(--space-md) 0 0;
  color: var(--color-danger);
  font-weight: 800;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: calc(var(--nav-height) + 24px);
  z-index: 60;
  max-width: min(360px, calc(100vw - 40px));
  border-radius: var(--radius-md);
  background: var(--color-text-primary);
  color: var(--color-text-inverse);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-card);
  font-weight: 800;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

[hidden] {
  display: none !important;
}

@media (min-width: 720px) {
  .app-shell {
    width: min(100% - 48px, 760px);
  }

  .app-header {
    grid-template-columns: minmax(0, 1fr);
    align-items: end;
  }

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

  .profile-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .translation-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
    align-items: start;
  }
}

@media (max-width: 719px) {
  body[data-view="lessons"] .app-shell {
    padding-bottom: 30px;
  }

  body[data-view="lessons"] .app-nav {
    display: none;
  }
}

@media (min-width: 1040px) {
  h1 {
    font-size: 2.35rem;
  }

  .app-shell {
    width: min(100% - 184px, 1160px);
    margin-left: 136px;
    margin-right: auto;
    padding-top: 30px;
    padding-bottom: 48px;
  }

  .app-nav {
    top: 24px;
    bottom: 24px;
    left: 24px;
    grid-template-columns: 1fr;
    grid-template-rows: auto repeat(6, auto) 1fr;
    gap: var(--space-sm);
    width: 88px;
    min-height: 0;
    border-radius: var(--radius-xl);
    padding: var(--space-sm);
    transform: none;
  }

  .nav-brand {
    display: grid;
    place-items: center;
    width: 54px;
    height: 54px;
    margin: 4px auto var(--space-md);
    border-radius: 18px;
    background: var(--color-bg-base);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
  }

  .nav-brand img {
    width: 100%;
    height: 100%;
  }

  .nav-item {
    width: 64px;
    margin: 0 auto;
  }

  .home-layout {
    grid-template-columns: minmax(0, 1fr) 350px;
    align-items: start;
  }

  .lesson-layout {
    grid-template-columns: minmax(430px, 620px) minmax(290px, 360px);
    justify-content: center;
    align-items: start;
  }

  .review-layout,
  .progress-layout {
    grid-template-columns: minmax(0, 1fr) 360px;
    align-items: start;
  }

  .toast {
    bottom: 24px;
  }
}

@media (max-width: 430px) {
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .summary-tile {
    border-right: 0;
    border-bottom: 1px solid var(--color-border-soft);
    padding-bottom: var(--space-sm);
  }

  .skill-row {
    grid-template-columns: 1fr;
  }
}