:root {
  color-scheme: light;
  --color-bg: #f5f7ff;
  --color-surface: #ffffff;
  --color-surface-soft: #f9faff;
  --color-text: #18213d;
  --color-muted: #707891;
  --color-border: #e5e8f5;
  --color-border-strong: #d7dced;
  --color-brand: #6258df;
  --color-brand-dark: #4d43c4;
  --color-brand-soft: #efedff;
  --color-success: #187553;
  --color-success-soft: #eaf8f1;
  --color-error: #b54252;
  --color-error-soft: #fff0f2;
  --shadow-soft: 0 18px 55px rgba(45, 52, 100, 0.09);
  --shadow-button: 0 8px 20px rgba(98, 88, 223, 0.22);
  --radius-small: 10px;
  --radius-medium: 14px;
  --radius-large: 20px;
  --content-width: 1160px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--color-bg);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--color-text);
  background:
    radial-gradient(circle at 12% -12%, rgba(123, 111, 232, 0.14), transparent 29rem),
    radial-gradient(circle at 92% 6%, rgba(104, 190, 219, 0.11), transparent 24rem),
    var(--color-bg);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(98, 88, 223, 0.34);
  outline-offset: 3px;
}

.leximind-app {
  min-height: 100vh;
}

.app-bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 14px max(24px, calc((100vw - var(--content-width)) / 2));
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(229, 232, 245, 0.9);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 750;
  letter-spacing: -0.025em;
}

.brand__mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #ffffff;
  background: linear-gradient(145deg, #7168e9, #554bcf);
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(98, 88, 223, 0.25);
}

.brand__name {
  font-size: 1.08rem;
}

.app-bar__stats {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--color-muted);
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
}

.app-shell {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  width: min(100% - 32px, var(--content-width));
  min-height: calc(100vh - 72px);
  margin: 0 auto;
}

.level-nav {
  padding: 34px 18px 40px 0;
  border-right: 1px solid var(--color-border);
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--color-brand);
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.105em;
  text-transform: uppercase;
}

.level-nav__title {
  margin: 0 12px 13px;
  color: var(--color-muted);
}

.level-button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin: 3px 0;
  padding: 11px 12px;
  color: var(--color-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 11px;
  transition: color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.level-button:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.7);
}

.level-button[aria-current="page"] {
  color: var(--color-brand-dark);
  font-weight: 700;
  background: var(--color-brand-soft);
}

.level-button__progress {
  color: inherit;
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  opacity: 0.72;
}

.learning-main {
  min-width: 0;
  padding: 36px 0 54px 42px;
}

.learning-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 27px;
}

.learning-head__copy {
  min-width: 0;
}

.learning-head h1 {
  margin: 0;
  font-size: clamp(1.75rem, 3.2vw, 2.35rem);
  line-height: 1.17;
  letter-spacing: -0.04em;
}

.learning-head__subtitle {
  margin: 9px 0 0;
  color: var(--color-muted);
  font-size: 0.97rem;
}

.lesson-progress {
  flex: 0 0 190px;
  color: var(--color-muted);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.progress-track {
  height: 7px;
  margin-top: 9px;
  overflow: hidden;
  background: var(--color-border);
  border-radius: 999px;
}

.progress-track__value {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #766ce9, #5d53d7);
  border-radius: inherit;
  transition: width 240ms ease;
}

.learning-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  margin: 0 0 20px;
  list-style: none;
}

.learning-step {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 14px 15px;
  color: var(--color-muted);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.learning-step__number {
  display: grid;
  flex: 0 0 27px;
  width: 27px;
  height: 27px;
  place-items: center;
  color: var(--color-muted);
  background: var(--color-border);
  border-radius: 50%;
  font-size: 0.74rem;
  font-weight: 800;
}

.learning-step__label {
  overflow: hidden;
  font-size: 0.86rem;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.learning-step[data-state="current"] {
  color: var(--color-brand-dark);
  background: var(--color-brand-soft);
  border-color: rgba(98, 88, 223, 0.24);
}

.learning-step[data-state="current"] .learning-step__number {
  color: #ffffff;
  background: var(--color-brand);
}

.learning-step[data-state="done"] {
  color: var(--color-success);
  background: var(--color-success-soft);
  border-color: rgba(24, 117, 83, 0.18);
}

.learning-step[data-state="done"] .learning-step__number {
  color: #ffffff;
  background: var(--color-success);
}

.learning-card {
  min-height: 355px;
  padding: clamp(25px, 4vw, 42px);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-soft);
}

.learning-card__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 32px;
}

.source-chip,
.mode-chip {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  padding: 7px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 650;
}

.source-chip {
  overflow: hidden;
  color: var(--color-muted);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mode-chip--quote {
  color: var(--color-success);
  background: var(--color-success-soft);
}

.mode-chip--adapted {
  color: var(--color-brand-dark);
  background: var(--color-brand-soft);
}

.word-line {
  display: flex;
  align-items: center;
  gap: 16px;
}

.lesson-word {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3rem, 8vw, 4.65rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.045em;
}

.sound-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 12px;
  color: var(--color-brand-dark);
  background: var(--color-brand-soft);
  border: 0;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}

.sound-button::before {
  content: "♪";
  margin-right: 6px;
  font-size: 1rem;
}

.phonetic {
  margin: 13px 0 0;
  color: var(--color-muted);
  font-size: 0.91rem;
}

.definition {
  max-width: 690px;
  margin: 30px 0 28px;
  padding: 17px 19px;
  color: #303858;
  background: linear-gradient(90deg, var(--color-brand-soft), #f7f6ff);
  border-left: 3px solid var(--color-brand);
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.08rem, 2.2vw, 1.27rem);
  line-height: 1.55;
}

.meaning-toggle {
  width: fit-content;
  margin-top: 2px;
  padding: 9px 14px;
  border: 1px solid var(--color-border-strong);
  border-radius: 999px;
  background: #fff;
  color: var(--color-muted);
  font: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
}

.meaning-toggle:hover,
.meaning-toggle:focus-visible {
  border-color: var(--color-brand);
  color: var(--color-brand-dark);
  outline: none;
}

.meaning-panel {
  margin-top: 14px;
  padding: 18px;
  border: 1px solid #ddd6fe;
  border-radius: 16px;
  background: #f8f7ff;
}

.meaning-panel__label {
  margin: 14px 0 5px;
  color: var(--color-brand-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.meaning-panel__label:first-child { margin-top: 0; }
.meaning-panel__text,
.meaning-panel__phrase { margin: 0; line-height: 1.65; }
.meaning-panel__phrase { color: var(--color-muted); }

.word-meanings {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 8px;
  margin: 8px 0 0;
}

.word-meaning {
  padding: 10px 12px;
  border-radius: 11px;
  background: #fff;
}

.word-meaning__word { font-weight: 800; }
.word-meaning__definition { margin: 3px 0 0; color: var(--color-muted); font-size: 0.82rem; line-height: 1.45; }

.primary-button {
  min-height: 45px;
  padding: 11px 19px;
  color: #ffffff;
  background: linear-gradient(135deg, #6b61e3, #574dce);
  border: 0;
  border-radius: 11px;
  box-shadow: var(--shadow-button);
  font-weight: 720;
  transition: transform 160ms ease, box-shadow 160ms ease, filter 160ms ease;
}

.primary-button:hover {
  filter: brightness(1.04);
  transform: translateY(-1px);
  box-shadow: 0 11px 26px rgba(98, 88, 223, 0.27);
}

.primary-button:active {
  transform: translateY(0);
}

.prompt {
  max-width: 760px;
  margin: 16px 0 9px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.65rem, 4vw, 2.35rem);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.prompt-help {
  margin: 0 0 26px;
  color: var(--color-muted);
  font-size: 0.88rem;
}

.answer-form {
  display: flex;
  gap: 10px;
  max-width: 690px;
  margin-top: 27px;
}

.answer-input {
  min-width: 0;
  flex: 1;
  height: 47px;
  padding: 0 15px;
  color: var(--color-text);
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border-strong);
  border-radius: 11px;
  transition: border-color 150ms ease, box-shadow 150ms ease, background-color 150ms ease;
}

.answer-input:focus {
  background: #ffffff;
  border-color: rgba(98, 88, 223, 0.55);
  box-shadow: 0 0 0 4px rgba(98, 88, 223, 0.09);
}

.feedback {
  display: block;
  min-height: 23px;
  margin-top: 16px;
  font-size: 0.87rem;
}

.feedback[data-state="error"] {
  display: inline-block;
  padding: 9px 12px;
  color: var(--color-error);
  background: var(--color-error-soft);
  border-radius: var(--radius-small);
}

.learning-card--message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.learning-card--message h2 {
  margin: 8px 0 6px;
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  letter-spacing: -0.03em;
}

.learning-card--message p:not(.completion-mark) {
  max-width: 580px;
  color: var(--color-muted);
}

.learning-card--success {
  background: linear-gradient(160deg, #ffffff, #f5fff9);
  border-color: rgba(24, 117, 83, 0.2);
}

.completion-mark {
  display: grid;
  width: 52px;
  height: 52px;
  margin: 0;
  place-items: center;
  color: #ffffff;
  background: var(--color-success);
  border-radius: 50%;
  font-size: 1.5rem;
  box-shadow: 0 10px 24px rgba(24, 117, 83, 0.22);
}

.feedback-answer {
  margin: 3px 0 22px !important;
  color: var(--color-success) !important;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.18rem;
}

.storage-notice {
  margin: 0 0 14px;
  padding: 10px 13px;
  color: #7c5b1b;
  background: #fff8e8;
  border: 1px solid #f2dfaa;
  border-radius: var(--radius-small);
  font-size: 0.82rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 14px;
}

.stat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
  padding: 15px 17px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--color-border);
  border-radius: 13px;
}

.stat__label {
  overflow: hidden;
  color: var(--color-muted);
  font-size: 0.78rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.stat__value {
  flex: none;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.sr-only {
  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;
}

@media (max-width: 820px) {
  .app-bar {
    padding-inline: 18px;
  }

  .app-shell {
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
  }

  .level-nav {
    display: flex;
    gap: 7px;
    padding: 12px 16px;
    overflow-x: auto;
    background: rgba(255, 255, 255, 0.76);
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
    scrollbar-width: none;
  }

  .level-nav::-webkit-scrollbar {
    display: none;
  }

  .level-nav__title {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .level-button {
    flex: 0 0 auto;
    width: auto;
    min-width: 86px;
    margin: 0;
    gap: 9px;
    padding: 9px 11px;
    background: var(--color-surface);
    border-color: var(--color-border);
  }

  .learning-main {
    padding: 26px 18px 42px;
  }
}

@media (max-width: 600px) {
  .app-bar {
    min-height: 64px;
    padding-block: 12px;
  }

  .brand__mark {
    width: 34px;
    height: 34px;
  }

  .app-bar__stats {
    gap: 11px;
    font-size: 0.75rem;
  }

  .app-bar__stats span:first-child {
    display: none;
  }

  .learning-main {
    padding-inline: 14px;
  }

  .learning-head {
    align-items: stretch;
    flex-direction: column;
    gap: 18px;
    margin-bottom: 22px;
  }

  .lesson-progress {
    flex-basis: auto;
    width: 100%;
  }

  .learning-steps {
    gap: 5px;
  }

  .learning-step {
    justify-content: center;
    gap: 6px;
    padding: 11px 7px;
  }

  .learning-step__number {
    width: 23px;
    height: 23px;
    flex-basis: 23px;
  }

  .learning-step__label {
    font-size: 0.72rem;
  }

  .learning-card {
    min-height: 330px;
    padding: 23px 19px;
    border-radius: 17px;
  }

  .learning-card__top {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 27px;
  }

  .source-chip {
    max-width: 100%;
  }

  .word-line {
    align-items: flex-start;
    flex-direction: column;
    gap: 13px;
  }

  .answer-form {
    flex-direction: column;
  }

  .answer-form .primary-button {
    width: 100%;
  }

  .stats-grid {
    grid-template-columns: 1fr;
    gap: 7px;
  }

  .stat {
    padding: 12px 14px;
  }
}

@media (max-width: 370px) {
  .learning-step__label {
    max-width: 56px;
    white-space: normal;
    line-height: 1.25;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}
/* iPhone and iOS Safari layout safeguards */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

button {
  touch-action: manipulation;
}

@supports (height: 100dvh) {
  .leximind-app {
    min-height: 100dvh;
  }

  .app-shell {
    min-height: calc(100dvh - 72px);
  }
}

@media (max-width: 820px) {
  .app-bar {
    padding-right: max(18px, env(safe-area-inset-right));
    padding-left: max(18px, env(safe-area-inset-left));
  }

  .level-nav {
    padding: 12px max(16px, env(safe-area-inset-right)) 12px max(16px, env(safe-area-inset-left));
  }

  .learning-main {
    padding: 26px max(18px, env(safe-area-inset-right)) max(42px, calc(env(safe-area-inset-bottom) + 24px)) max(18px, env(safe-area-inset-left));
  }
}

@media (max-width: 600px) {
  .app-bar {
    padding-top: max(12px, env(safe-area-inset-top));
    padding-right: max(14px, env(safe-area-inset-right));
    padding-bottom: 12px;
    padding-left: max(14px, env(safe-area-inset-left));
  }

  .learning-main {
    padding-right: max(14px, env(safe-area-inset-right));
    padding-left: max(14px, env(safe-area-inset-left));
  }

  button,
  .answer-input,
  .level-button {
    min-height: 44px;
  }

  .answer-input {
    height: 48px;
    font-size: 16px;
  }

  .meaning-panel {
    padding: 15px;
  }

  .word-meanings {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 370px) {
  .brand__name {
    font-size: 1rem;
  }

  .app-bar__stats {
    gap: 6px;
  }
}

@media (max-height: 500px) and (orientation: landscape) {
  .app-bar {
    min-height: 56px;
    padding-top: max(8px, env(safe-area-inset-top));
    padding-bottom: 8px;
  }

  .level-nav {
    padding-top: 8px;
    padding-bottom: 8px;
  }

  .learning-main {
    padding-top: 18px;
  }

  .learning-card {
    min-height: 0;
  }
}

/* Two-page redesign */
.brand:is(button) {
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
}

.home-main,
.learning-main--focused {
  width: min(100% - 32px, 1040px);
  margin: 0 auto;
}

.home-main {
  padding: 54px 0 72px;
}

.home-hero {
  max-width: 680px;
  margin-bottom: 44px;
}

.home-hero h1 {
  margin: 0;
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.home-hero__copy {
  margin: 15px 0 0;
  color: var(--color-muted);
  font-size: 1.03rem;
  line-height: 1.7;
}

.home-section {
  margin-top: 34px;
}

.section-title-line {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
}

.section-title,
.section-title-line .section-title {
  margin: 0 0 14px;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.section-title-line p {
  margin: 0 0 14px;
  color: var(--color-muted);
  font-size: 0.78rem;
}

.profile-panel {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: 18px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-soft);
}

.current-stage {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 136px;
  padding: 22px;
  color: #fff;
  background: linear-gradient(145deg, #7066e8, #5146c7);
  border-radius: 16px;
}

.current-stage__label {
  font-size: 0.75rem;
  opacity: 0.78;
}

.current-stage__value {
  margin-top: 9px;
  font-size: 1.75rem;
}

.current-stage__detail {
  margin-top: 5px;
  font-size: 0.78rem;
  opacity: 0.82;
}

.progress-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.progress-card {
  padding: 22px;
  background: var(--color-surface-soft);
  border: 1px solid var(--color-border);
  border-radius: 16px;
}

.progress-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;
  color: var(--color-muted);
  font-size: 0.8rem;
}

.progress-card__head strong {
  color: var(--color-text);
  font-size: 1.3rem;
}

.progress-card p {
  margin: 12px 0 0;
  color: var(--color-muted);
  font-size: 0.76rem;
}

.stage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.stage-card {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  min-height: 136px;
  padding: 20px;
  text-align: left;
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid var(--color-border);
  border-radius: 18px;
  box-shadow: 0 10px 34px rgba(45, 52, 100, 0.05);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.stage-card:hover {
  transform: translateY(-2px);
  border-color: #c9c4fb;
  box-shadow: var(--shadow-soft);
}

.stage-card[aria-current="true"] {
  background: linear-gradient(145deg, #f7f5ff, #eeecff);
  border-color: #8f86ee;
  box-shadow: 0 14px 40px rgba(98, 88, 223, 0.13);
}

.stage-card__icon {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  color: var(--color-brand-dark);
  font-weight: 800;
  background: var(--color-brand-soft);
  border-radius: 15px;
}

.stage-card__copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 4px;
}

.stage-card__copy strong {
  font-size: 1.05rem;
}

.stage-card__copy span,
.stage-card__copy small {
  color: var(--color-muted);
  font-size: 0.74rem;
  line-height: 1.4;
}

.stage-card__selected {
  padding: 5px 8px;
  color: var(--color-brand-dark);
  background: #fff;
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 700;
}

.stage-card__arrow {
  color: var(--color-brand);
  font-size: 1.2rem;
}

.continue-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 150px;
  padding: 26px 30px;
  color: #fff;
  background:
    radial-gradient(circle at 90% 10%, rgba(255,255,255,.16), transparent 13rem),
    linear-gradient(135deg, #292451, #5146c7);
  border-radius: var(--radius-large);
  box-shadow: 0 20px 50px rgba(52, 43, 132, 0.2);
}

.continue-card--empty {
  background:
    radial-gradient(circle at 90% 10%, rgba(255,255,255,.16), transparent 13rem),
    linear-gradient(135deg, #5148a6, #6258df);
}

.continue-card__eyebrow {
  color: #c9c4ff;
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.08em;
}

.continue-card h3 {
  margin: 8px 0 5px;
  font-size: 1.6rem;
}

.continue-card p {
  margin: 0;
  color: rgba(255,255,255,.72);
  font-size: 0.86rem;
}

.continue-card .primary-button {
  flex: 0 0 auto;
  color: var(--color-brand-dark);
  background: #fff;
  box-shadow: none;
}

.continue-card .primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.loading-card {
  display: grid;
  min-height: 270px;
  place-items: center;
  align-content: center;
  gap: 16px;
  color: var(--color-muted);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
}

.loading-spinner {
  width: 34px;
  height: 34px;
  border: 3px solid var(--color-brand-soft);
  border-top-color: var(--color-brand);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.learning-main--focused {
  padding: 34px 0 56px;
}

.learning-main--focused .learning-head {
  margin-top: 26px;
}

.learning-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.back-button,
.secondary-button {
  padding: 10px 14px;
  color: var(--color-muted);
  background: #fff;
  border: 1px solid var(--color-border-strong);
  border-radius: 11px;
}

.back-button:hover,
.secondary-button:hover {
  color: var(--color-brand-dark);
  border-color: #aaa3f3;
}

.learning-main--focused + * {
  display: none;
}

.leximind-app .app-shell {
  display: block;
  width: 100%;
}

.leximind-app .level-nav {
  display: none;
}

.dialog-backdrop {
  position: fixed;
  z-index: 20;
  inset: 0;
  display: grid;
  padding: 20px;
  place-items: center;
  background: rgba(21, 25, 48, 0.48);
  backdrop-filter: blur(5px);
}

.stage-dialog {
  width: min(100%, 420px);
  padding: 30px;
  text-align: center;
  background: #fff;
  border-radius: 22px;
  box-shadow: 0 26px 80px rgba(20, 24, 55, 0.25);
}

.stage-dialog__icon {
  display: grid;
  width: 52px;
  height: 52px;
  margin: 0 auto;
  place-items: center;
  color: var(--color-brand);
  background: var(--color-brand-soft);
  border-radius: 16px;
  font-size: 1.4rem;
}

.stage-dialog h2 {
  margin: 18px 0 8px;
}

.stage-dialog p {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.6;
}

.stage-dialog__actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 24px;
}

@media (max-width: 760px) {
  .app-bar {
    min-height: 64px;
    padding:
      max(10px, env(safe-area-inset-top))
      max(16px, env(safe-area-inset-right))
      10px
      max(16px, env(safe-area-inset-left));
  }

  .app-bar__stats {
    gap: 10px;
    font-size: 0.72rem;
  }

  .app-bar__stats span:first-child {
    display: none;
  }

  .home-main,
  .learning-main--focused {
    width: min(100% - 28px, 1040px);
  }

  .home-main {
    padding: 36px 0 calc(48px + env(safe-area-inset-bottom));
  }

  .home-hero {
    margin-bottom: 30px;
  }

  .profile-panel {
    grid-template-columns: 1fr;
    padding: 14px;
  }

  .current-stage {
    min-height: 112px;
  }

  .stage-grid {
    grid-template-columns: 1fr;
  }

  .stage-card {
    min-height: 112px;
  }

  .continue-card {
    align-items: stretch;
    flex-direction: column;
    padding: 24px;
  }

  .continue-card .primary-button {
    width: 100%;
  }

  .learning-main--focused {
    padding: 22px 0 calc(42px + env(safe-area-inset-bottom));
  }
}

@media (max-width: 430px) {
  .brand__name {
    font-size: 0.98rem;
  }

  .home-hero h1 {
    font-size: 2rem;
  }

  .progress-cards {
    grid-template-columns: 1fr;
  }

  .section-title-line {
    align-items: flex-start;
    flex-direction: column;
    gap: 0;
  }

  .stage-card {
    grid-template-columns: 42px minmax(0, 1fr) auto;
    padding: 17px;
  }

  .stage-card__icon {
    width: 42px;
    height: 42px;
  }

  .learning-top {
    align-items: flex-start;
    gap: 16px;
  }

  .learning-top .lesson-progress {
    flex-basis: 132px;
  }

  .learning-steps {
    gap: 6px;
  }

  .learning-step {
    gap: 7px;
    padding: 11px 9px;
  }

  .learning-step__label {
    font-size: 0.7rem;
  }

  .learning-card {
    padding: 24px 20px;
  }

  .lesson-word {
    font-size: clamp(3.2rem, 17vw, 4.6rem);
  }

  .answer-form {
    align-items: stretch;
    flex-direction: column;
  }

  .answer-form .primary-button {
    width: 100%;
  }
}
.learning-navigation {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 14px;
  margin: 16px 0 0;
  color: var(--color-muted);
  font-size: 0.78rem;
}

.learning-navigation .secondary-button {
  justify-self: start;
}

.learning-navigation__position {
  font-variant-numeric: tabular-nums;
}

.learning-navigation__hint {
  justify-self: end;
}

.secondary-button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

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

  .learning-navigation__position {
    justify-self: end;
  }

  .learning-navigation__hint {
    display: none;
  }
}