/* Steady — site styles.
   Brand tokens mirror branding/palette.css and Shared/Theme.swift.
   The page chrome follows the system light/dark setting; the keyboard demo
   stays light, because it is a picture of the app. */

@font-face {
  font-family: "Atkinson Hyperlegible";
  src: url("fonts/atkinson-hyperlegible-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Atkinson Hyperlegible";
  src: url("fonts/atkinson-hyperlegible-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --brand: #1C6E68;
  --brand-dark: #124A46;
  --brand-soft: #D9EEEB;
  --positive: #3F7D4A;
  --caution: #B2791F;

  --surface: #F6F8F7;
  --raised: #FFFFFF;
  --sunken: #EEF4F2;
  --text: #15201D;
  --text-2: #4B5B57;
  --text-3: #7C8C87;
  --rule: #E2EAE7;
  --rule-strong: #C7D5D1;

  --on-brand: #FFFFFF;
  --on-brand-2: rgba(255, 255, 255, .82);

  --radius: 14px;
  --radius-lg: 22px;
  --pill: 999px;
  --shadow: 0 1px 2px rgba(20, 32, 29, .05), 0 10px 28px -14px rgba(20, 32, 29, .12);
  --shadow-lg: 0 2px 6px rgba(20, 32, 29, .06), 0 32px 64px -28px rgba(20, 32, 29, .28);

  --display: "Atkinson Hyperlegible", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  --gutter: 20px;
  --measure: 680px;
  --wide: 1120px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #4FA9A1;
    --brand-dark: #0E3B38;
    --brand-soft: #16302E;
    --surface: #0D1716;
    --raised: #142120;
    --sunken: #101B1A;
    --text: #EAF2F0;
    --text-2: #B3C4C0;
    --text-3: #8A9D99;
    --rule: #22312F;
    --rule-strong: #2E403D;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -14px rgba(0, 0, 0, .6);
    --shadow-lg: 0 2px 6px rgba(0, 0, 0, .45), 0 32px 64px -28px rgba(0, 0, 0, .75);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
}

body {
  margin: 0;
  background: var(--surface);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
}

h1, h2, h3, .display { font-family: var(--display); letter-spacing: -.01em; }
p, li { color: var(--text-2); }
strong { color: var(--text); font-weight: 700; }
a { color: var(--brand); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 3px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap { width: 100%; max-width: var(--wide); margin: 0 auto; padding: 0 var(--gutter); }
.prose { max-width: var(--measure); }
.center { text-align: center; margin-left: auto; margin-right: auto; }

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--raised);
  color: var(--text);
  padding: 12px 18px;
  border-radius: 0 0 var(--radius) 0;
  z-index: 50;
}
.skip:focus { left: 0; }

/* ---------- Top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--surface) 86%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--rule);
}
.topbar .wrap {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 62px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 19px;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}
.brand img { width: 30px; height: 30px; border-radius: 8px; display: block; }
.navlinks { display: flex; gap: 22px; font-size: 15px; }
.navlinks a { color: var(--text-2); text-decoration: none; }
.navlinks a:hover { color: var(--brand); text-decoration: underline; }
@media (max-width: 720px) { .navlinks { display: none; } }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 12px 24px;
  border-radius: var(--pill);
  border: 2px solid transparent;
  font: 600 16px/1.2 var(--sans);
  text-decoration: none;
  cursor: pointer;
  transition: transform .14s ease, background-color .14s ease, border-color .14s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--rule-strong); }
.btn-ghost:hover { border-color: var(--brand); color: var(--brand); }
.btn-sm { min-height: 40px; padding: 8px 18px; font-size: 15px; }
.topbar .btn { flex: none; }

/* On the teal hero */
.on-dark .btn-primary { background: #fff; color: var(--brand-dark); }
.on-dark .btn-primary:hover { background: var(--brand-soft); }
.on-dark .btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .45); }
.on-dark .btn-ghost:hover { border-color: #fff; color: #fff; background: rgba(255, 255, 255, .08); }
.on-dark :focus-visible { outline-color: #fff; }

/* ---------- Hero ---------- */

.hero {
  background:
    radial-gradient(1200px 520px at 78% -8%, rgba(217, 238, 235, .22), transparent 62%),
    linear-gradient(158deg, #1C6E68 0%, #124A46 100%);
  color: var(--on-brand);
  padding: clamp(40px, 7vw, 84px) 0 clamp(52px, 8vw, 96px);
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 15px 7px 11px;
  border-radius: var(--pill);
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .22);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
  color: #fff;
  margin: 0 0 20px;
}
.badge .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #8FE3C2;
  box-shadow: 0 0 0 4px rgba(143, 227, 194, .22);
}

.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 5.4vw, 56px);
  line-height: 1.08;
  color: #fff;
}
.hero .lede {
  margin: 0 0 14px;
  font-family: var(--display);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.55;
  color: var(--on-brand-2);
  max-width: 34em;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 16px; }
.fineprint {
  margin: 0;
  font-size: 14.5px;
  color: rgba(255, 255, 255, .9);
}
.fineprint span { white-space: nowrap; }

/* ---------- Device + demo ---------- */

.device {
  --key-base: clamp(27px, 4.4vw, 38px);
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  background: #fff;
  border-radius: 30px;
  padding: 12px;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, .5);
}
.screen {
  background: #F6F8F7;
  border-radius: 20px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 330px;
}
.screen-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  background: #fff;
  border-bottom: 1px solid #E2EAE7;
  font-size: 12.5px;
  font-weight: 600;
  color: #4B5B57;
  letter-spacing: .02em;
  text-transform: uppercase;
}
.field {
  flex: 1;
  padding: 16px 16px 20px;
  font-size: 19px;
  line-height: 1.5;
  color: #15201D;
  word-break: break-word;
  min-height: 86px;
}
.field .placeholder { color: #5C6C68; }
.field .prefix { color: #124A46; font-weight: 700; }
.caret {
  display: inline-block;
  width: 2px;
  height: 1.05em;
  background: #1C6E68;
  vertical-align: text-bottom;
  margin-left: 1px;
  animation: blink 1.1s steps(2, start) infinite;
}
@keyframes blink { to { visibility: hidden; } }

.chips {
  display: flex;
  gap: 6px;
  padding: 6px 7px;
  background: #D1D4DB;
  border-top: 1px solid rgba(0, 0, 0, .06);
}
.chip {
  flex: 1 1 0;
  min-width: 0;
  min-height: 38px;
  padding: 6px 4px;
  border: 0;
  border-radius: 9px;
  background: #fff;
  color: #15201D;
  font: 600 15px/1.2 var(--sans);
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  box-shadow: 0 1px 0 rgba(0, 0, 0, .18);
}
.chip:hover { background: var(--brand-soft); }
.chip:disabled { opacity: .45; cursor: default; box-shadow: none; }

.tray {
  background: #D1D4DB;
  padding: 2px 5px 9px;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.krow {
  display: flex;
  align-items: flex-end;
  height: calc(var(--key-base) * 1.5);
}
.krow.indent { padding: 0 calc(var(--key-base) * .42); }
.key {
  flex: 1 1 0;
  min-width: 0;
  margin: 0 2.5px;
  border: 0;
  border-radius: 6px;
  background: #fff;
  color: #15201D;
  font-family: var(--sans);
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(0, 0, 0, .22);
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: var(--key-base);
  transition: flex-grow .18s ease-out, height .18s ease-out, font-size .18s ease-out,
    background-color .18s ease-out, opacity .18s ease-out, box-shadow .18s ease-out;
}
.key.t-most { background: #C9E7E3; color: #124A46; font-weight: 700; box-shadow: 0 0 0 2px #1C6E68, 0 1px 0 rgba(0, 0, 0, .22); }
.key.t-likely { background: #DCEDEB; }
.key.t-possible { background: #EDF5F4; }
.key.t-unlikely { background: #fff; }
.key.t-impossible { background: #ECEEF1; color: #7C8C87; opacity: .34; }
.key.hidden { display: none; }
.key.util, .key.deco {
  background: #ADB3BD;
  color: #15201D;
  font-size: 13px;
  font-weight: 600;
  flex-grow: 0;
  flex-basis: calc(var(--key-base) * 1.25);
}
.key.deco { cursor: default; }
.key.space { flex-grow: 4; background: #fff; }
.krow.bottom { height: var(--key-base); }
.krow.bottom .key { height: var(--key-base); }

.demo-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 16px;
  margin: 18px auto 0;
  max-width: 420px;
}
.seg {
  display: inline-flex;
  padding: 3px;
  border-radius: var(--pill);
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .22);
}
.seg button {
  appearance: none;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, .92);
  font: 600 14px/1 var(--sans);
  padding: 9px 14px;
  border-radius: var(--pill);
  cursor: pointer;
  min-height: 36px;
}
.seg button[aria-pressed="true"] { background: #fff; color: var(--brand-dark); }
.demo-hint {
  margin: 14px auto 0;
  max-width: 420px;
  font-size: 14px;
  color: rgba(255, 255, 255, .88);
  text-align: center;
}
.demo-wrap:focus-visible { outline: 3px solid #fff; outline-offset: 10px; border-radius: 34px; }

/* ---------- Sections ---------- */

section { padding: clamp(52px, 7vw, 92px) 0; }
.section-head { max-width: var(--measure); margin-bottom: clamp(28px, 4vw, 46px); }
.eyebrow {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--brand);
}
h2 { margin: 0 0 14px; font-size: clamp(26px, 3.4vw, 36px); line-height: 1.15; color: var(--text); }
h3 { margin: 0 0 8px; font-size: 19px; line-height: 1.3; color: var(--text); }
.section-head p { margin: 0; font-size: 18px; }

.cards { display: grid; gap: 18px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cards.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (max-width: 860px) { .cards, .cards.two { grid-template-columns: 1fr; } }
.card {
  background: var(--raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  box-shadow: var(--shadow);
}
.card p:last-child { margin-bottom: 0; }
.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--brand-soft);
  color: var(--brand-dark);
  font: 700 16px/1 var(--display);
  margin-bottom: 14px;
}
@media (prefers-color-scheme: dark) {
  .step-no { background: var(--brand-soft); color: var(--brand); }
}

.alt { background: var(--sunken); }

/* Privacy band */
.band {
  background: linear-gradient(158deg, #1C6E68 0%, #124A46 100%);
  color: #fff;
}
.band h2, .band h3 { color: #fff; }
.band p, .band li { color: var(--on-brand-2); }
.band .card {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .16);
  box-shadow: none;
}
.band strong { color: #fff; }
.band a { color: #fff; }

/* Checklist */
.ticks { list-style: none; margin: 0; padding: 0; }
.ticks li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
}
.ticks li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .42em;
  width: 18px;
  height: 10px;
  border-left: 3px solid var(--brand);
  border-bottom: 3px solid var(--brand);
  transform: rotate(-45deg);
  border-radius: 2px;
}
.band .ticks li::before { border-color: #8FE3C2; }

/* Call to action block */
.cta-block {
  text-align: center;
  background: var(--raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: clamp(32px, 5vw, 54px) 24px;
  box-shadow: var(--shadow);
}
.cta-block h2 { margin-bottom: 10px; }
.cta-block p { margin: 0 auto 24px; max-width: 46ch; }

/* Prose pages (support, privacy) */
.page-head {
  background: linear-gradient(158deg, #1C6E68 0%, #124A46 100%);
  color: #fff;
  padding: clamp(36px, 6vw, 64px) 0 clamp(32px, 5vw, 54px);
}
.page-head h1 { margin: 0 0 10px; font-size: clamp(30px, 4.4vw, 44px); color: #fff; }
.page-head p { margin: 0; color: var(--on-brand-2); font-size: 18px; }
.doc { padding: clamp(34px, 5vw, 60px) 0 clamp(50px, 7vw, 80px); }
.doc h2 {
  margin: 44px 0 12px;
  font-size: 23px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--rule);
}
.doc h2:first-child { margin-top: 0; }
.doc h3 { margin: 26px 0 6px; }
.doc ol, .doc ul { padding-left: 22px; }
.doc li { margin-bottom: 8px; }
.note {
  margin: 26px 0;
  padding: 18px 20px;
  background: var(--brand-soft);
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--brand) 22%, transparent);
}
.note p { margin: 0; color: var(--brand-dark); }
.note p + p { margin-top: 10px; }
@media (prefers-color-scheme: dark) {
  .note p { color: var(--text); }
}
.toc {
  margin: 0 0 34px;
  padding: 18px 20px;
  background: var(--raised);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.toc ul { margin: 8px 0 0; padding-left: 20px; }
.toc li { margin-bottom: 4px; }
kbd {
  font: 600 14px/1 var(--sans);
  background: var(--raised);
  border: 1px solid var(--rule-strong);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 3px 7px;
  color: var(--text);
  white-space: nowrap;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--brand-dark);
  color: rgba(255, 255, 255, .86);
  padding: 44px 0 52px;
  font-size: 15px;
}
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; }
.site-footer a { color: #fff; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer .brand { color: #fff; margin-right: auto; font-size: 17px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 22px; }

/* Demo fallback before (or without) JavaScript */
.demo-wrap[data-loading] .tray::before,
.nojs-note {
  content: "";
  display: block;
  padding: 22px 18px;
  text-align: center;
  font: 500 15px/1.5 var(--sans);
  color: #4B5B57;
}
.demo-wrap[data-loading] .tray::before { content: "Loading the keyboard\2026"; }
.nojs-note { color: rgba(255, 255, 255, .8); }

/* Two-column section: heading beside its list */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: start;
}
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

/* Anchors must clear the sticky header */
section[id], h2[id], h3[id], [id]:target { scroll-margin-top: 84px; }