/* Connect2030 website. One idea carries the look: the big "on" switch — tap it and the internet works.
   Unbounded for headings, Golos Text for everything else; light paper, navy ink, cobalt actions, green "on". */
:root {
  --paper: #f5f7fb;
  --card: #ffffff;
  --ink: #14213d;
  --muted: #5b6785;
  --line: #dfe4f0;
  --cobalt: #2f5bff;
  --cobalt-ink: #1f3fc4;
  --on: #18b26b;
  --off: #c3cadb;
  --amber: #f0a020;
  --danger: #d7263d;
  --radius-lg: 28px;
  --radius: 16px;
  --radius-sm: 12px;
  --display: "Unbounded", "Segoe UI", system-ui, sans-serif;
  --text: "Golos Text", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.5 var(--text);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--cobalt); }
.hidden { display: none !important; }

.wrap { width: 100%; max-width: 600px; margin: 0 auto; padding: 0 16px; }

/* ---------- header ---------- */
.top { padding: 18px 0 6px; }
.top .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.brand {
  font: 600 19px/1 var(--display);
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.top-link {
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--line);
}

/* ---------- type ---------- */
h1, h2, h3 { font-family: var(--display); letter-spacing: -0.02em; margin: 0; }
h1 { font-size: clamp(30px, 8.4vw, 46px); line-height: 1.08; font-weight: 700; }
h2 { font-size: 23px; line-height: 1.2; font-weight: 600; margin-bottom: 14px; }
h3 { font-size: 18px; font-weight: 600; }
p { margin: 0 0 12px; }
.lead { font-size: 19px; color: var(--muted); max-width: 32em; }
.small { font-size: 14px; color: var(--muted); }

/* ---------- the switch (the one memorable element) ---------- */
.switch-big {
  --w: 168px; --h: 92px; --pad: 8px;
  position: relative;
  width: var(--w); height: var(--h);
  border-radius: 999px;
  background: var(--off);
  border: 0; padding: 0;
  cursor: pointer;
  transition: background .45s ease;
  flex: none;
}
.switch-big::after {
  content: "";
  position: absolute; top: var(--pad); left: var(--pad);
  width: calc(var(--h) - 2 * var(--pad)); height: calc(var(--h) - 2 * var(--pad));
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 4px 14px rgba(20, 33, 61, .25);
  transition: transform .45s cubic-bezier(.3, 1.4, .5, 1);
}
.switch-big.on { background: var(--on); }
.switch-big.on::after { transform: translateX(calc(var(--w) - var(--h))); }
.switch-big:focus-visible { outline: 4px solid var(--cobalt); outline-offset: 4px; }
.switch-small { --w: 76px; --h: 44px; --pad: 4px; cursor: default; }

.hero { padding: 26px 0 8px; }
.hero .switch-big { margin: 26px 0 22px; }
.hero-state { font: 600 15px/1 var(--display); color: var(--muted); margin-left: 4px; }
.switch-row { display: flex; align-items: center; gap: 16px; }

/* ---------- blocks ---------- */
.block {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  margin: 16px 0;
  border: 1px solid var(--line);
}
.block.plain { background: transparent; border: 0; padding: 8px 4px; }

/* ---------- buttons ---------- */
.btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%;
  min-height: 56px;
  padding: 14px 18px;
  margin: 10px 0 0;
  border-radius: var(--radius);
  border: 2px solid var(--line);
  background: var(--card);
  color: var(--ink);
  font: 600 17px/1.2 var(--text);
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { border-color: var(--muted); }
.btn:focus-visible { outline: 3px solid var(--cobalt); outline-offset: 2px; }
.btn:disabled { opacity: .5; cursor: default; }
.btn.primary { background: var(--cobalt); border-color: var(--cobalt); color: #fff; min-height: 64px; font-size: 19px; }
.btn.primary:hover { background: var(--cobalt-ink); border-color: var(--cobalt-ink); }
.btn.go { background: var(--on); border-color: var(--on); color: #fff; min-height: 64px; font-size: 19px; }
.btn.small { min-height: 44px; font-size: 15px; width: auto; padding: 8px 14px; margin: 0; }
.btn.danger { color: var(--danger); }
.btn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.btn-row .btn { margin: 0; }
.linkish { background: none; border: 0; padding: 0; color: var(--cobalt); font: inherit; cursor: pointer; text-decoration: underline; }

/* ---------- tariffs ---------- */
.plans { display: grid; gap: 10px; }
.plan {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px 18px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  cursor: pointer;
  font: inherit; color: inherit; text-align: left; width: 100%;
}
.plan b { font: 700 22px/1 var(--display); white-space: nowrap; }
.plan .per { font-size: 14px; color: var(--muted); font-weight: 400; }
.plan .who { font-weight: 600; }
.plan .who small { display: block; font-weight: 400; color: var(--muted); font-size: 14px; }
.plan.sel { border-color: var(--cobalt); box-shadow: inset 0 0 0 1px var(--cobalt); }
.plan:focus-visible { outline: 3px solid var(--cobalt); outline-offset: 2px; }

.check { display: flex; gap: 12px; align-items: flex-start; margin: 16px 0 4px; font-size: 15px; color: var(--muted); }
.check input { width: 22px; height: 22px; margin: 1px 0 0; flex: none; accent-color: var(--cobalt); }

/* ---------- steps (a real sequence) ---------- */
.steps { list-style: none; padding: 0; margin: 0; counter-reset: s; }
.steps li { counter-increment: s; position: relative; padding: 0 0 18px 52px; }
.steps li::before {
  content: counter(s);
  position: absolute; left: 0; top: -2px;
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  background: var(--ink); color: #fff;
  font: 600 16px/1 var(--display);
}
.steps li:last-child { padding-bottom: 0; }
.steps b { display: block; font-size: 18px; }
.steps span { color: var(--muted); }

/* ---------- facts / rows ---------- */
.status-head { display: flex; align-items: center; gap: 16px; margin-bottom: 6px; }
.status-title { font: 700 21px/1.15 var(--display); }
.status-sub { color: var(--muted); }
.row { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); }
.row:first-of-type { border-top: 0; }
.row span:first-child { color: var(--muted); }

.chips { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.chips .btn { margin: 0; min-height: 50px; font-size: 16px; padding: 8px; }
input.field {
  width: 100%; min-height: 54px; margin-top: 10px; padding: 12px 16px;
  border: 2px solid var(--line); border-radius: var(--radius); font: inherit; color: var(--ink); background: #fff;
}
input.field:focus { outline: none; border-color: var(--cobalt); }

.toggle-line { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: 16px; }
.toggle-line input { width: 52px; height: 30px; accent-color: var(--on); flex: none; }

.device { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0; border-top: 1px solid var(--line); }
.device:first-of-type { border-top: 0; }
.device small { display: block; color: var(--muted); }

.key {
  font: 14px/1.4 ui-monospace, Consolas, monospace; word-break: break-all;
  background: var(--paper); border-radius: var(--radius-sm); padding: 12px 14px; margin: 10px 0 0;
}
.note { border-radius: var(--radius); padding: 14px 16px; margin: 12px 0 0; background: #fff6e3; color: #6b4b00; }
.note.ok { background: #e3f7ec; color: #0c5b35; }
.note.err { background: #fde8eb; color: #8a1424; }

/* ---------- downloads ---------- */
.os-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.os-grid .btn { margin: 0; min-height: 52px; font-size: 16px; }
.os-grid.has-mine { grid-template-columns: repeat(3, 1fr); }
.os-grid.has-mine .btn:not(.mine) { font-size: 14px; padding: 8px 6px; }
.os-grid .btn.mine { grid-column: 1 / -1; background: var(--ink); border-color: var(--ink); color: #fff; min-height: 60px; font-size: 18px; }

details { border-top: 1px solid var(--line); padding: 14px 0; }
details:first-of-type { border-top: 0; }
summary { font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font: 600 20px/1 var(--display); color: var(--cobalt); }
details[open] summary::after { content: "−"; }
details p { margin: 10px 0 0; color: var(--muted); }

.doc { white-space: pre-line; font-size: 16px; }

footer { padding: 24px 0 40px; font-size: 14px; color: var(--muted); }
footer a { color: var(--muted); margin-right: 14px; }

#toast {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%);
  background: var(--ink); color: #fff; padding: 12px 18px; border-radius: 999px;
  font-weight: 600; font-size: 15px; z-index: 10; max-width: calc(100% - 32px); text-align: center;
}

@media (max-width: 380px) {
  .chips { grid-template-columns: repeat(2, 1fr); }
  .hero .switch-big { --w: 140px; --h: 78px; }
}
/* very narrow phones and split screens */
.os-grid .btn, .plan, .btn-row .btn { min-width: 0; overflow-wrap: anywhere; }
footer a { display: inline-block; margin-bottom: 6px; }
.brand { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.top-link { white-space: nowrap; flex: none; }
@media (max-width: 360px) {
  .brand { font-size: 16px; }
  .top-link { padding: 8px 12px; font-size: 15px; }
  .block { padding: 18px 14px; }
  .steps li { padding-left: 44px; }
  .plan { padding: 14px 12px; }
  .plan b { font-size: 18px; white-space: normal; text-align: right; }
  .os-grid.has-mine { grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .switch-big, .switch-big::after { transition: none; }
}