:root {
  color-scheme: light dark;
  --background: #f2f4f7;
  --surface: #ffffff;
  --text: #1a1c1e;
  --secondary: #44474e;
  --primary: #3b5ddb;
  --container: #dde1ff;
  --on-container: #001453;
  --outline: #c4c6d0;
  --shadow: 0 6px 24px rgb(26 28 30 / 4%);
  font-family: Roboto, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #181a20;
    --surface: #222630;
    --text: #ffffff;
    --secondary: #c4c6d0;
    --primary: #b6c4ff;
    --container: #1d2d61;
    --on-container: #dde1ff;
    --outline: #44464f;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { scroll-padding-top: 24px; }
body { margin: 0; background: var(--background); color: var(--text); line-height: 1.75; }
a { color: var(--primary); text-underline-offset: .2em; overflow-wrap: anywhere; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible { outline: 3px solid var(--primary); outline-offset: 4px; border-radius: 4px; }
.skip-link { position: absolute; left: 16px; top: -100px; z-index: 10; background: var(--surface); padding: 12px 20px; border-radius: 12px; }
.skip-link:focus { top: 12px; }
.top-bar { background: var(--surface); border-bottom: 1px solid var(--outline); }
.header-inner { max-width: 1200px; margin: auto; padding: 20px 40px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; flex-shrink: 0; }
.brand img { border-radius: 12px; }
.brand span { font-size: 23px; font-weight: 700; letter-spacing: -.6px; line-height: 1.25; }
.brand small { display: block; margin-top: 4px; color: var(--secondary); font-size: 12px; font-weight: 400; letter-spacing: .2px; }
.links { display: flex; gap: 8px; flex-wrap: wrap; }
.links a { padding: 10px 18px; border-radius: 24px; color: var(--secondary); font-size: 14px; font-weight: 600; text-decoration: none; }
.links a[aria-current="page"], .links a:hover { background: var(--container); color: var(--on-container); }
main { max-width: 1200px; margin: auto; padding: 52px 40px 64px; }
main:focus { outline: none; }
.page-heading { margin-bottom: 36px; }
.eyebrow { color: var(--primary); text-transform: uppercase; font-size: 12px; font-weight: 700; letter-spacing: 1.8px; margin: 0 0 12px; }
h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; line-height: 1.2; letter-spacing: -1.4px; margin: 0 0 16px; }
.intro { color: var(--secondary); font-size: 18px; max-width: 680px; margin: 0 0 16px; }
.updated { display: inline-block; font-size: 12px; font-weight: 500; background: var(--container); color: var(--on-container); border-radius: 20px; padding: 6px 14px; margin: 0; }
.document-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); align-items: start; gap: 28px; }
.contents { position: sticky; top: 24px; padding: 8px 0; }
.contents h2 { font-size: 12px; color: var(--secondary); text-transform: uppercase; letter-spacing: 1px; margin: 0 12px 12px; }
.contents a { display: block; border-radius: 12px; padding: 7px 12px; margin: 2px 0; color: var(--secondary); text-decoration: none; font-size: 14px; line-height: 1.5; }
.contents a:hover { background: var(--container); color: var(--on-container); }
.document { background: var(--surface); border: 1px solid var(--outline); border-radius: 24px; padding: 36px 40px; box-shadow: var(--shadow); }
.document section + section { border-top: 1px solid var(--outline); margin-top: 32px; padding-top: 28px; }
.document h2 { font-size: 21px; line-height: 1.4; letter-spacing: -.4px; margin: 0 0 16px; }
.document p { margin: 0 0 16px; }
.document section > :last-child { margin-bottom: 0; }
.document ul, .document ol { padding-left: 24px; margin: 0 0 20px; }
.document li { padding-left: 4px; margin-bottom: 12px; }
.document li::marker { color: var(--primary); font-weight: 600; }
code { font-size: .88em; background: var(--container); color: var(--on-container); padding: 3px 6px; border-radius: 5px; overflow-wrap: anywhere; }
.notice { background: var(--container); color: var(--on-container); padding: 18px 20px; border-radius: 16px; margin-bottom: 20px; }
.notice p { margin: 0; }
footer { max-width: 1200px; padding: 24px 40px 36px; margin: auto; border-top: 1px solid var(--outline); display: flex; flex-wrap: wrap; gap: 12px 28px; color: var(--secondary); font-size: 13px; }
footer p { margin: 0; margin-right: auto; }

@media (max-width: 850px) {
  .header-inner { padding: 18px 24px; }
  main { padding: 36px 24px 44px; }
  .document-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .contents { position: static; padding: 16px; border: 1px solid var(--outline); border-radius: 20px; }
  .contents nav { display: flex; gap: 4px; flex-wrap: wrap; }
  .contents h2 { flex-basis: 100%; margin: 0 8px 8px; }
  .contents a { padding: 6px 8px; font-size: 13px; }
  .document { padding: 28px; }
  footer { margin: 0 24px; padding: 24px 0 32px; }
}

@media (max-width: 520px) {
  .header-inner { align-items: flex-start; flex-direction: column; gap: 16px; padding: 18px 20px; }
  .links { width: 100%; }
  .links a { padding: 8px 14px; font-size: 13px; }
  main { padding: 28px 16px 36px; }
  .page-heading { margin-bottom: 24px; }
  .intro { font-size: 16px; }
  .document { padding: 24px 20px; border-radius: 20px; font-size: 15px; }
  .document h2 { font-size: 19px; }
  footer { margin: 0 20px; }
  footer p { flex-basis: 100%; }
}

@media print {
  :root { color-scheme: light; --background: #fff; --surface: #fff; --text: #000; --secondary: #333; --primary: #000; --container: #eee; --on-container: #000; --outline: #bbb; --shadow: none; }
  .top-bar, .contents, .skip-link, footer { display: none; }
  main { max-width: none; padding: 0; }
  .document-layout { display: block; }
  .document { border: 0; padding: 0; }
  .document h2 { break-after: avoid; }
  a { color: #000; }
}

/* App homepage */
.home { padding-top: 64px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(3.4rem, 6.5vw, 5.3rem); line-height: 1.04; letter-spacing: -.055em; margin-bottom: 28px; }
.hero h1 span { color: var(--primary); }
.hero-lead { font-size: 23px; line-height: 1.45; max-width: 470px; }
.hero-description, .section-intro { color: var(--secondary); max-width: 600px; font-size: 17px; }
.play-button { display: inline-block; padding: 14px; margin-top: 4px; line-height: 0; border-radius: 4px; }
.play-button img { display: block; width: 200px; max-width: 100%; height: auto; }
.play-button:hover { outline: 2px solid var(--primary); outline-offset: 2px; }
.download-note { color: var(--secondary); font-size: 12px; margin-top: 16px; }
.hero-preview { width: 100%; max-width: 380px; margin: 0 auto; }
.hero-preview img, .screen img { display: block; width: 100%; height: auto; aspect-ratio: 9 / 16; object-fit: contain; border-radius: 16px; border: 1px solid var(--outline); box-shadow: 0 14px 35px rgb(0 0 0 / 10%); }
figcaption { text-align: center; margin-top: 15px; color: var(--secondary); font-size: 12px; }
.hero-preview figcaption { color: var(--secondary); }
.home-section { margin-top: 100px; scroll-margin-top: 28px; }
.home h2 { font-size: clamp(2rem, 4vw, 3rem); line-height: 1.15; letter-spacing: -.04em; margin: 0 0 24px; }
.home h3 { font-size: 22px; line-height: 1.3; letter-spacing: -.5px; margin: 18px 0 12px; }
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 42px; }
.feature-grid article { border-top: 2px solid var(--outline); padding-top: 22px; }
.feature-grid p, .showcase-copy p, .sync-panel p, .plan p { color: var(--secondary); }
.feature-number { font-size: 11px; letter-spacing: 1.5px; color: var(--primary); font-weight: 700; }
.showcase { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; align-items: start; }
.showcase-copy { grid-column: 1 / -1; grid-row: 1; max-width: 720px; }
.screen { width: 100%; max-width: 360px; margin: 0 auto; }
.showcase-copy h3 { font-size: 18px; }
.showcase-copy p { font-size: 15px; }
.sync-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; background: var(--surface); border: 1px solid var(--outline); padding: 40px; border-radius: 24px; }
.sync-panel p:first-child { margin-top: 0; }
.sync-panel .eyebrow { color: var(--primary); }
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.plan { background: var(--surface); border: 1px solid var(--outline); padding: 32px; border-radius: 24px; }
.plan h3 { margin-top: 0; font-size: 26px; }
.plan ul { padding-left: 22px; line-height: 2.2; }
.plan li::marker { color: var(--primary); }
.premium { border: 2px solid var(--primary); }
.closing { text-align: center; padding: 52px 24px; background: var(--container); color: var(--on-container); border-radius: 28px; }
.closing .eyebrow { color: inherit; }
@media (max-width: 1000px) {
  .header-inner { flex-wrap: wrap; }
  .hero { gap: 36px; }

}
@media (max-width: 650px) {
  .home { padding-top: 40px; }
  .hero, .feature-grid, .showcase, .sync-panel, .pricing-grid { grid-template-columns: minmax(0, 1fr); }
  .hero { gap: 32px; }
  .hero h1 { font-size: clamp(3rem, 12vw, 4.6rem); }
  .hero-lead { font-size: 21px; }
  .hero-preview { max-width: 340px; }
  .home-section { margin-top: 64px; }
  .feature-grid { gap: 24px; }
  .showcase .screen { max-width: 340px; }
  .showcase-copy { grid-row: 1; }

  .sync-panel, .plan { padding: 26px; }
  .sync-panel { gap: 8px; }
  .closing { padding: 36px 20px; }
}

/* Language selection stays separate from the main menu. */
.language-switch { display: flex; gap: 4px; flex-shrink: 0; }
.language-switch a { padding: 6px 9px; border-radius: 8px; color: var(--secondary); text-decoration: none; font-size: 13px; font-weight: 600; }
.language-switch a[aria-current="true"], .language-switch a:hover { background: var(--container); color: var(--on-container); }
html[lang="pl"] .header-inner { flex-wrap: wrap; }
@media (max-width: 520px) {
  .header-inner { flex-direction: row; align-items: center; flex-wrap: wrap; }
  .header-inner > .links { order: 3; }
  .language-switch { margin-left: auto; }
}
@media print { .language-switch { display: none; } }