/*
 * The public site in the mobile app's look: the primitives of apps/mobile/src/components/ui.tsx (Button, Card,
 * Option, Chip, Banner, Progress, StateBar) as CSS classes. Colours, spacing and radii are the --color-*,
 * --space-* and --radius-* variables of theme.css, generated by build.ts from @lemmi/design-tokens/app.
 * No inline styles anywhere: the CSP allows only this file and theme.css.
 */
:root {
  --font-heading: 'Baloo 2', 'Nunito', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Nunito', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --shadow-card: 0 8px 16px rgb(0 0 0 / 6%);
  --shadow-option: 0 4px 10px rgb(0 0 0 / 5%);
  --read: 680px;
  --wide: 1080px;
}
/*
 * The site ships Baloo 2 for Latin only. In a language written in another script, a heading in Baloo would mix
 * two fonts in one line ("Підтвердіть email"), so its headings are all Nunito ExtraBold, just as rounded.
 */
html:is(:lang(uk), :lang(vi), :lang(ko), :lang(ja)) {
  --font-heading: 'Nunito', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font: 600 17px/1.6 var(--font-body);
  overflow-wrap: anywhere;
}
h1,
h2,
h3 {
  margin: 0 0 var(--space-md);
  font-family: var(--font-heading);
  line-height: 1.25;
  overflow-wrap: normal;
}
h1 {
  margin-top: var(--space-lg);
  font-size: 30px;
  font-weight: 800;
}
h2 {
  margin-top: var(--space-xxl);
  font-size: 22px;
  font-weight: 700;
}
h3 {
  font-size: 19px;
  font-weight: 700;
}
p {
  margin: 0 0 var(--space-md);
}
/* Links in text: the text colour (the primary orange is too light for text) with an orange underline. */
a {
  color: var(--color-text);
  text-decoration-color: var(--color-primary);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
a:hover {
  color: var(--color-primary-shadow);
}
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}
.muted {
  color: var(--color-text-muted);
}
.lead {
  color: var(--color-text-muted);
  font-size: 19px;
}
.container {
  width: 100%;
  max-width: var(--wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}
.container.narrow {
  max-width: var(--read);
}

/* --- Primitives (ui.tsx) ------------------------------------------------------------------------------- */

/* Button kind="primary": a tactile edge in primaryShadow that sinks when pressed. */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  min-height: 52px;
  margin-bottom: 5px;
  /* Baloo 2 sits high in its line box (a deep descent): nudge the label to the optical centre */
  padding: 3px var(--space-xl) 0;
  border: 0;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  box-shadow: 0 5px 0 var(--color-primary-shadow);
  color: var(--color-primary-text);
  font: 700 16px/1.2 var(--font-heading);
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 0.08s,
    box-shadow 0.08s;
}
.button:hover {
  color: var(--color-primary-text);
}
.button:active {
  transform: translateY(3px);
  box-shadow: 0 2px 0 var(--color-primary-shadow);
}
.button:disabled {
  opacity: 0.5;
  cursor: default;
  transform: none;
  box-shadow: 0 5px 0 var(--color-primary-shadow);
}
/* Button kind="default": a plain surface with a border, no tactile edge. */
.button.plain {
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: none;
  color: var(--color-text);
}
.button.plain:hover {
  color: var(--color-text);
}
.button.plain:active {
  transform: none;
  opacity: 0.8;
}
.button.small {
  min-height: 40px;
  margin-bottom: 4px;
  padding: 3px var(--space-lg) 0;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 0 var(--color-primary-shadow);
  font-size: 15px;
}
.button.small:active {
  box-shadow: 0 1px 0 var(--color-primary-shadow);
}

.card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

/* Option: an answer tile. */
.option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-option);
}
.option.is-correct {
  border-color: var(--color-success);
  background: var(--color-success-bg);
}
.option .icon {
  color: var(--color-success);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-text);
  font: 700 13px/1.4 var(--font-heading);
  white-space: nowrap;
}
.chip.is-selected {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-primary-text);
}
.chip .icon {
  width: 14px;
  height: 14px;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-sm) 0 0;
}

.banner {
  display: block;
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  background: var(--color-warning-bg);
  font-size: 15px;
}
.banner.ok,
.banner.banner-ok {
  background: var(--color-success-bg);
}

.progress {
  display: flex;
  height: 10px;
  border-radius: var(--radius-pill);
  background: var(--color-surface-alt);
  overflow: hidden;
}
.progress > span {
  background: var(--color-primary);
}
.w-40 {
  width: 40%;
}
.w-65 {
  width: 65%;
}

/* StateBar: the share of words in each learning state (proportions of the illustration). */
.statebar {
  display: flex;
  height: 14px;
  border-radius: 7px;
  background: var(--color-state-unseen);
  overflow: hidden;
}
.statebar .s-stable {
  flex: 34;
}
.statebar .s-review {
  flex: 14;
}
.statebar .s-learning {
  flex: 8;
}
.statebar .s-unverified {
  flex: 18;
}
.statebar .s-unseen {
  flex: 26;
}
.s-stable {
  background: var(--color-state-stable);
}
.s-review {
  background: var(--color-state-review);
}
.s-learning {
  background: var(--color-state-learning);
}
.s-unverified {
  background: var(--color-state-unverified);
}
.s-unseen {
  background: var(--color-state-unseen);
}

/* The streak pill of the Today screen. */
.streak {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: auto;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-primary-bg);
  color: var(--color-primary-shadow);
  font: 700 14px/1.2 var(--font-heading);
}
.streak .icon {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

.icon {
  flex: none;
  width: 20px;
  height: 20px;
}

/* Icon badges, coloured like topicAccent() in apps/mobile/src/config/theme.ts. */
.badge {
  display: inline-grid;
  flex: none;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
}
.badge.big {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
}
.badge.big .icon {
  width: 28px;
  height: 28px;
}
.tone-0 {
  background: var(--color-primary-bg);
  color: var(--color-primary);
}
.tone-1 {
  background: var(--color-secondary-bg);
  color: var(--color-secondary);
}
.tone-2 {
  background: var(--color-state-unverified);
  color: var(--color-state-review);
}
.tone-3 {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}
.tone-4 {
  background: var(--color-accent-pink-bg);
  color: var(--color-accent-pink);
}

/* --- Header and footer --------------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}
.bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm) var(--space-lg);
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  /* the wordmark stays in Baloo 2 in every language */
  font:
    800 22px/1 'Baloo 2',
    var(--font-body);
  text-decoration: none;
}
.brand:hover {
  color: var(--color-text);
}
.brand img {
  border-radius: 10px;
}
.site-header nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm) var(--space-lg);
  font: 700 15px/1.2 var(--font-heading);
}
.site-header nav a:not(.button) {
  color: var(--color-text);
  text-decoration: none;
}
.site-header nav a:not(.button):hover {
  color: var(--color-primary);
}
.langs {
  display: flex;
  gap: var(--space-sm);
  padding-left: var(--space-md);
  border-left: 2px solid var(--color-border);
}
@media (max-width: 559px) {
  .nav-link {
    display: none;
  }
}

.site-footer {
  margin-top: var(--space-xxl);
  padding: 40px 0 var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-alt);
  font-size: 15px;
}
.footer-grid {
  display: grid;
  gap: var(--space-xl);
}
.footer-grid p {
  margin-top: var(--space-md);
}
.footer-grid nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-grid nav a {
  color: var(--color-text);
  text-decoration: none;
}
.footer-grid nav a:hover {
  color: var(--color-primary);
}
.footer-title {
  margin: 0 0 var(--space-xs);
  color: var(--color-text-muted);
  font: 700 13px/1.4 var(--font-heading);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.copyright {
  margin: var(--space-xl) auto 0;
  color: var(--color-text-muted);
  font-size: 14px;
}
@media (min-width: 600px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* --- Text pages (legal, support, licenses, donate, email links) ---------------------------------------- */

.page {
  flex: 1;
  padding-top: var(--space-md);
  padding-bottom: var(--space-xxl);
}
.page li {
  margin-bottom: var(--space-xs);
}
table {
  display: block;
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  overflow-x: auto;
}
th,
td {
  padding: 6px 8px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}
form {
  display: grid;
  gap: var(--space-sm);
  max-width: 420px;
}
/* Field */
input {
  min-height: 52px;
  padding: 0 var(--space-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text);
  font: 600 16px var(--font-body);
}
input:focus {
  border-color: var(--color-primary);
  outline: none;
}
.stores {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.soon {
  margin: 0;
  padding: var(--space-md) var(--space-lg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text-muted);
  font: 700 16px/1.4 var(--font-heading);
}

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

.hero-wrap {
  background:
    radial-gradient(circle at 85% 15%, var(--color-primary-bg), transparent 45%),
    radial-gradient(circle at 5% 95%, var(--color-secondary-bg), transparent 40%);
}
.hero {
  display: grid;
  align-items: center;
  gap: 48px;
  padding-top: 40px;
  padding-bottom: 64px;
}
.hero h1 {
  margin: var(--space-lg) 0;
  font-size: clamp(36px, 6vw, 58px);
  line-height: 1.1;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin: 0;
  padding: 6px 14px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  font: 700 14px/1.4 var(--font-heading);
}
.eyebrow i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
}
.hero .stores {
  margin: var(--space-xl) 0;
}
.facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-lg) 40px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--color-text-muted);
  font-size: 15px;
}
.facts b {
  display: block;
  color: var(--color-text);
  font: 800 28px/1.2 var(--font-heading);
}
@media (min-width: 800px) {
  .hero {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 64px;
    padding-top: 72px;
    padding-bottom: 96px;
  }
}

.section {
  padding-top: 64px;
  padding-bottom: 32px;
}
.section-head {
  max-width: 640px;
  margin: 0 auto 40px;
  text-align: center;
}
.section-title {
  margin: 0 0 var(--space-md);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.15;
}

.steps,
.values {
  display: grid;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
  list-style: none;
}
.step h3,
.values h3 {
  margin: var(--space-sm) 0 0;
}
.step p,
.values p {
  margin: 0;
}
.step-n {
  margin-left: auto;
  color: var(--color-border);
  font: 800 40px/1 var(--font-heading);
}
@media (min-width: 800px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 600px) {
  .values {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature {
  display: grid;
  align-items: center;
  gap: var(--space-xxl);
  padding: var(--space-xxl) 0;
}
.feature h3 {
  margin: var(--space-lg) 0 var(--space-sm);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.2;
}
@media (min-width: 800px) {
  .feature {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }
  .features .feature:nth-child(even) .feature-text {
    order: 2;
  }
}

.faq {
  margin-bottom: var(--space-md);
  padding: 0;
  box-shadow: none;
}
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-lg);
  font: 700 18px/1.4 var(--font-heading);
  list-style: none;
  cursor: pointer;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary .icon {
  color: var(--color-text-muted);
  transition: transform 0.15s;
}
.faq[open] summary .icon {
  transform: rotate(90deg);
}
.faq p {
  margin: 0;
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--color-text-muted);
}

/* The closing call to action: a big tactile card in the primary colour, like the primary button. */
#download {
  padding-top: 64px;
}
.cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 48px var(--space-xl);
  border-radius: var(--radius-xl);
  background: var(--color-primary);
  box-shadow: 0 8px 0 var(--color-primary-shadow);
  color: var(--color-primary-text);
  text-align: center;
}
.cta img {
  border-radius: 18px;
  box-shadow: 0 6px 0 var(--color-primary-shadow);
}
.cta .section-title {
  margin-top: var(--space-xl);
}
.cta .lead {
  color: inherit;
  opacity: 0.85;
}
.cta .stores {
  justify-content: center;
  margin-top: var(--space-md);
}
.cta .button {
  background: var(--color-surface);
  box-shadow: 0 5px 0 var(--color-primary-shadow);
  color: var(--color-text);
}
.cta .button.plain {
  border-color: currentColor;
  background: transparent;
  color: inherit;
}
.cta .soon {
  border-color: currentColor;
  color: inherit;
}

/* --- App screens drawn in HTML: a phone around one screen of the app ----------------------------------- */

.phone {
  width: 100%;
  max-width: 320px;
  margin: 0 auto;
  padding: 10px;
  border: 1px solid var(--color-border);
  border-radius: 44px;
  background: var(--color-surface);
  box-shadow:
    0 40px 60px -30px rgb(43 38 32 / 35%),
    var(--shadow-card);
}
.screen {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: 44px var(--space-md) var(--space-md);
  border-radius: 34px;
  background: var(--color-bg);
  font-size: 15px;
  line-height: 1.45;
  overflow: hidden;
  position: relative;
}
.screen::before {
  content: '';
  position: absolute;
  top: 12px;
  left: 50%;
  width: 84px;
  height: 22px;
  border-radius: var(--radius-pill);
  background: #15110d;
  transform: translateX(-50%);
}
.screen p {
  margin: 0;
}
.m-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
}
.m-split {
  justify-content: space-between;
}
.m-h1 {
  font: 800 28px/1.3 var(--font-heading);
}
.m-p.small {
  font-size: 13px;
}
.m-card {
  padding: 14px;
  gap: 10px;
}
.m-button {
  min-height: 46px;
  pointer-events: none;
}
.m-hint {
  flex-direction: row;
  align-items: center;
}
.m-word {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  font: 800 34px/1.2 var(--font-heading);
}
.m-word.left {
  justify-content: flex-start;
  padding-bottom: 0;
}
.field {
  display: block;
  padding: 12px var(--space-lg);
  border: 2px solid var(--color-warning);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-size: 18px;
}
.diff p {
  flex-wrap: nowrap;
}
.diff .m-p {
  width: 90px;
  flex: none;
}
.diff-word {
  font-size: 20px;
  letter-spacing: 1px;
}
.diff-word mark {
  background: none;
  color: var(--color-success);
  font-weight: 800;
  text-decoration: underline;
}
.diff-word.bad mark {
  color: var(--color-danger);
}
.level {
  padding: 2px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-secondary-bg);
  color: var(--color-secondary);
  font: 800 18px/1.4 var(--font-heading);
}
.legend {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px var(--space-sm);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
}
.legend li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.legend i {
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: 3px;
}
/* ActivityCalendar */
.calendar {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.day {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border-radius: 50%;
  font: 700 12px/1 var(--font-heading);
}
.day.counted {
  background: var(--color-primary);
  color: var(--color-primary-text);
}
.day.freeze {
  background: var(--color-secondary-bg);
  color: var(--color-secondary);
}
.day.future {
  color: var(--color-text-muted);
}
/* The Today screen fills a whole phone, its tab bar at the bottom. */
.phone.full .screen {
  min-height: 560px;
}
.tabbar {
  display: flex;
  justify-content: space-around;
  margin: auto calc(-1 * var(--space-md)) calc(-1 * var(--space-md));
  padding: var(--space-md) 0 var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
}
.tabbar .icon {
  width: 24px;
  height: 24px;
}
.tabbar .on {
  color: var(--color-primary);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
  }
}