:root {
  --blue: #3D42E0;
  --blue-hover: #2F33B8;
  --on-blue: #fff;
  --bg: #F6F7FB;
  --surface: #fff;
  --text: #15172B;
  --muted: #4A4D63;
  --border: #D5D7E3;
  --link: #3D42E0;
  --focus: #3D42E0;
  --soft: #E9EAFC;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --blue-hover: #5559F0;
    --bg: #111220;
    --surface: #1C1E31;
    --text: #F2F3FA;
    --muted: #B9BBD0;
    --border: #3A3D57;
    --link: #A4A7FF;
    --focus: #A4A7FF;
    --soft: #262960;
  }
}

* { box-sizing: border-box; }

html { font-size: 125%; } /* 20px at the default browser size, grows with the visitor's own setting */

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  line-height: 1.6;
}

a { color: var(--link); text-underline-offset: 0.15em; }
a:focus-visible, button:focus-visible { outline: 4px solid var(--focus); outline-offset: 3px; }

h1, h2, h3 { line-height: 1.25; margin: 0 0 0.5em; }
h1 { font-size: 2.2rem; }
h2 { font-size: 1.5rem; margin-top: 1.6em; }
h3 { font-size: 1.15rem; }
p, ul, ol { margin: 0 0 1em; }
li { margin-bottom: 0.4em; }

.wrap { max-width: 52rem; margin: 0 auto; padding: 0 1rem; }

/* Header and footer */
header { background: var(--surface); border-bottom: 1px solid var(--border); }
header .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1.5rem; padding-top: 0.6rem; padding-bottom: 0.6rem; }
.brand { display: flex; align-items: center; gap: 0.6rem; font-weight: 700; font-size: 1.15rem; color: var(--text); text-decoration: none; min-height: 3rem; }
.brand img { width: 2.4rem; height: 2.4rem; }
nav { display: flex; flex-wrap: wrap; gap: 0.25rem 1rem; margin-left: auto; }
nav a { display: inline-flex; align-items: center; min-height: 3rem; padding: 0 0.4rem; font-weight: 600; }
nav a[aria-current="page"] { color: var(--text); text-decoration: none; }

main { padding: 2rem 0 3rem; }

footer { border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; }
footer .wrap { padding-top: 1.2rem; padding-bottom: 1.5rem; }
footer a { display: inline-block; padding: 0.4rem 0; margin-right: 1rem; }

/* Buttons: large, easy to hit */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 3.6rem; padding: 0.6rem 1.6rem;
  border: 2px solid var(--blue); border-radius: 0.8rem;
  background: var(--blue); color: var(--on-blue);
  font: inherit; font-weight: 700; font-size: 1.1rem; text-decoration: none;
  cursor: pointer;
}
.button:hover { background: var(--blue-hover); border-color: var(--blue-hover); }
.button.secondary { background: transparent; color: var(--link); border-color: currentColor; }
.button.secondary:hover { background: var(--soft); }
.button[aria-disabled="true"] { cursor: default; border-style: dashed; background: transparent; color: var(--muted); }
.buttons { display: flex; flex-wrap: wrap; gap: 1rem; margin: 1.5rem 0; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 1rem; padding: 1.4rem 1.5rem; margin-bottom: 1.2rem; }
.lead { font-size: 1.2rem; color: var(--muted); }
.muted { color: var(--muted); }

/* Home */
.hero { display: flex; flex-wrap: wrap; align-items: center; gap: 1.5rem 2rem; }
.hero img { width: 7rem; height: 7rem; }
.hero div { flex: 1 1 20rem; }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: 1rem; margin: 1rem 0; }
.plan { text-align: center; margin: 0; }
.plan .price { font-size: 2rem; font-weight: 700; }
.plan .per { color: var(--muted); }
.features { padding-left: 1.2em; }

/* Activation page */
.key {
  font-family: Consolas, "Cascadia Mono", monospace; font-size: 1.6rem; font-weight: 700;
  word-break: break-all; letter-spacing: 0.03em;
  background: var(--soft); border-radius: 0.6rem; padding: 0.8rem 1rem; margin: 0.5rem 0 0;
}
.status { min-height: 1.6em; font-weight: 600; }
.steps li { margin-bottom: 0.7em; }

@media (forced-colors: active) {
  .button { border: 2px solid ButtonText; }
  .key { border: 2px solid CanvasText; }
}