:root {
  --ground: #F5F6FA;
  --surface: #FFFFFF;
  --ink: #161B30;
  --ink-2: #4E5470;
  --ink-3: #8389A3;
  --line: #E2E4EE;
  --violet: #5A35E8;
  --violet-ink: #3F1FC4;
  --violet-soft: #EEEAFE;
  --mint: #14A37F;
  --mint-soft: #E3F6EF;
  --amber: #B7791F;
  --amber-soft: #FDF4E3;
  --red: #C8344A;
  --red-soft: #FCE9EC;
  --display: 'Bricolage Grotesque', ui-sans-serif, system-ui, sans-serif;
  --body: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  --r-lg: 28px;
  --r-md: 16px;
  --r-sm: 10px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 16px/1.5 var(--body);
  font-feature-settings: 'tnum' 1;
  min-height: 100vh;
}
button, input, select { font: inherit; color: inherit; }
a { color: var(--violet-ink); }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--violet) 45%, transparent); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---------- top bar ---------- */
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 18px clamp(16px, 4vw, 48px);
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark { width: 30px; height: 30px; }
.brand-name { font: 700 21px/1 var(--display); letter-spacing: -0.02em; }
.brand-tag { color: var(--ink-3); font-size: 14px; margin-left: 6px; padding-left: 12px; border-left: 1px solid var(--line); }
.langs { display: flex; gap: 4px; background: var(--ground); border-radius: 999px; padding: 4px; }
.langs button {
  border: 0; background: transparent; border-radius: 999px; padding: 6px 12px; cursor: pointer;
  font-weight: 600; font-size: 14px; color: var(--ink-2);
}
.langs button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(22, 27, 48, .12); }

/* ---------- layout ---------- */
.stage {
  display: grid;
  grid-template-columns: minmax(300px, 440px) minmax(0, 560px);
  justify-content: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(28px, 6vw, 72px) clamp(16px, 4vw, 48px) 48px;
  align-items: start;
}
.ticket-col { position: sticky; top: 32px; }

/* ---------- the voucher ticket ---------- */
.ticket {
  --notch: 18px;
  position: relative;
  color: #fff;
  background: var(--violet);
  border-radius: var(--r-lg);
  padding: 28px 30px 26px;
  -webkit-mask: radial-gradient(circle var(--notch) at 0 62%, #0000 98%, #000) left / 51% 100% no-repeat,
                radial-gradient(circle var(--notch) at 100% 62%, #0000 98%, #000) right / 51% 100% no-repeat;
          mask: radial-gradient(circle var(--notch) at 0 62%, #0000 98%, #000) left / 51% 100% no-repeat,
                radial-gradient(circle var(--notch) at 100% 62%, #0000 98%, #000) right / 51% 100% no-repeat;
  overflow: hidden;
  isolation: isolate;
  transition: background-color .4s ease;
}
.ticket::before {
  /* fine guilloche-like pattern: concentric rings, like security printing on a voucher */
  content: ''; position: absolute; inset: -40% -30% auto auto; width: 360px; height: 360px; z-index: -1;
  background: repeating-radial-gradient(circle at center, rgba(255,255,255,.10) 0 1px, transparent 1px 9px);
  border-radius: 50%;
}
.ticket.is-paid { background: var(--mint); }
.ticket-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-weight: 600; font-size: 15px; opacity: .92; }
.ticket-head svg { width: 26px; height: 26px; }
.ticket-value {
  font: 800 clamp(76px, 10vw, 112px)/.9 var(--display);
  letter-spacing: -0.045em;
  margin: 26px 0 30px;
  font-variation-settings: 'wdth' 85;
  white-space: nowrap;
}
.ticket-value .cur { font-size: .5em; vertical-align: .62em; margin-right: .04em; font-weight: 700; }
.ticket-value.is-empty { opacity: .45; }
.ticket-perf { border-top: 2px dashed rgba(255,255,255,.38); margin: 0 -30px 20px; }
.ticket-rows { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; }
.ticket-rows dt { font-size: 13px; opacity: .75; }
.ticket-rows dd { margin: 2px 0 0; font-weight: 600; font-size: 17px; }
.ticket-rows .strike { text-decoration: line-through; opacity: .6; font-weight: 500; margin-left: 6px; font-size: 14px; }
.ticket-code {
  margin-top: 18px; padding: 12px 14px; border-radius: var(--r-sm);
  background: rgba(255,255,255,.16); font: 600 18px/1.2 var(--mono); letter-spacing: .06em; text-align: center;
}
.ticket-note { margin-top: 16px; color: var(--ink-3); font-size: 14px; line-height: 1.45; }

/* ---------- panel ---------- */
.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(22px, 4vw, 36px);
}
.stepper { display: flex; gap: 6px; margin: 0 0 28px; padding: 0; list-style: none; }
.stepper li { flex: 1; font-size: 13px; color: var(--ink-3); font-weight: 600; }
.stepper li::before { content: ''; display: block; height: 4px; border-radius: 4px; background: var(--line); margin-bottom: 8px; transition: background .3s; }
.stepper li.done::before, .stepper li.now::before { background: var(--violet); }
.stepper li.now { color: var(--ink); }

h1 {
  font: 700 clamp(28px, 3.4vw, 36px)/1.1 var(--display);
  letter-spacing: -0.025em;
  margin: 0 0 8px;
}
.sub { color: var(--ink-2); margin: 0 0 26px; max-width: 46ch; }

.field label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 8px; }
.input {
  width: 100%; height: 56px; padding: 0 18px;
  border: 1.5px solid var(--line); border-radius: var(--r-md); background: var(--surface);
  font-size: 17px; transition: border-color .15s;
}
.input:focus { border-color: var(--violet); outline: none; box-shadow: 0 0 0 4px var(--violet-soft); }
.check { display: flex; gap: 12px; align-items: flex-start; margin: 18px 0 0; font-size: 14px; color: var(--ink-2); cursor: pointer; }
.check input { width: 20px; height: 20px; margin: 1px 0 0; accent-color: var(--violet); flex: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 56px; padding: 0 28px; border-radius: 999px; border: 0; cursor: pointer;
  font-weight: 700; font-size: 16px; text-decoration: none; white-space: nowrap;
  transition: background-color .15s, transform .1s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #2A3150; }
.btn-primary[disabled] { background: var(--ink-3); cursor: not-allowed; }
.btn-ghost { background: transparent; color: var(--ink-2); padding: 0 16px; }
.btn-ghost:hover { color: var(--ink); background: var(--ground); }
.actions { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 28px; }
.actions .btn-primary { flex: 1; max-width: 320px; margin-left: auto; }

.error { margin: 14px 0 0; padding: 12px 14px; border-radius: var(--r-sm); background: var(--red-soft); color: var(--red); font-size: 14px; font-weight: 500; }
.error:empty { display: none; }

/* ---------- choices ---------- */
.choices { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.choice {
  position: relative; text-align: left; cursor: pointer;
  background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--r-md);
  padding: 18px 18px 16px; transition: border-color .15s, background-color .15s;
}
.choice:hover { border-color: #C9CCDC; }
.choice[aria-checked="true"] { border-color: var(--violet); background: var(--violet-soft); }
.choice .face { font: 700 34px/1 var(--display); letter-spacing: -0.03em; }
.choice .face .cur { font-size: .6em; vertical-align: .4em; margin-right: 1px; }
.choice .pay { margin-top: 10px; color: var(--ink-2); font-size: 15px; }
.choice .pay b { color: var(--ink); }
.choice .badge {
  position: absolute; top: 14px; right: 14px; font-size: 12px; font-weight: 700;
  padding: 4px 8px; border-radius: 999px; background: var(--mint-soft); color: #0B7A5E;
}

.coins { display: grid; grid-template-columns: 1fr; gap: 10px; }
.coin { display: flex; align-items: center; gap: 14px; padding: 14px 16px; }
.coin .glyph {
  width: 40px; height: 40px; flex: none; border-radius: 50%;
  display: grid; place-items: center; font: 700 13px/1 var(--display); color: #fff; letter-spacing: -.02em;
}
.coin .nm { font-weight: 600; }
.coin .net { font-size: 13px; color: var(--ink-3); }
.coin .tick { margin-left: auto; width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--line); flex: none; display: grid; place-items: center; }
.coin[aria-checked="true"] .tick { background: var(--violet); border-color: var(--violet); }
.coin[aria-checked="true"] .tick::after { content: ''; width: 9px; height: 5px; border: 2px solid #fff; border-top: 0; border-right: 0; transform: rotate(-45deg) translate(1px, -1px); }
.net-group { font-size: 13px; color: var(--ink-3); font-weight: 600; margin: 14px 2px 2px; }
.net-group:first-child { margin-top: 0; }

/* ---------- payment ---------- */
.pay-grid { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: start; }
.qr { width: 148px; height: 148px; padding: 10px; border: 1px solid var(--line); border-radius: var(--r-md); background: #fff; }
.qr img, .qr canvas { width: 100% !important; height: 100% !important; display: block; image-rendering: pixelated; }
.kv { margin-bottom: 16px; }
.kv .k { font-size: 13px; font-weight: 600; color: var(--ink-3); margin-bottom: 6px; }
.copyrow {
  display: flex; align-items: center; gap: 10px;
  border: 1.5px solid var(--line); border-radius: var(--r-md); padding: 8px 8px 8px 16px; background: var(--ground);
}
.copyrow .v { flex: 1; min-width: 0; font-family: var(--mono); font-size: 15px; word-break: break-all; line-height: 1.4; }
.copyrow .v.big { font: 700 22px/1.2 var(--display); letter-spacing: -0.01em; font-family: var(--display); }
.copyrow .v.big small { font-size: 15px; color: var(--ink-2); font-weight: 600; margin-left: 4px; }
.copy {
  flex: none; height: 38px; padding: 0 14px; border-radius: 999px; border: 0; cursor: pointer;
  background: var(--ink); color: #fff; font-weight: 600; font-size: 14px; min-width: 84px;
}
.copy.done { background: var(--mint); }
.warn { padding: 12px 14px; border-radius: var(--r-sm); background: var(--amber-soft); color: #7A4F0E; font-size: 14px; margin: 4px 0 20px; }
.status {
  display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: var(--r-md);
  background: var(--ground); font-size: 15px; color: var(--ink-2);
}
.status.detected { background: var(--mint-soft); color: #0B6B53; }
.pulse { width: 10px; height: 10px; border-radius: 50%; background: var(--violet); flex: none; animation: pulse 1.6s ease-in-out infinite; }
.status.detected .pulse { background: var(--mint); }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: .35; transform: scale(.8); } }
.timer { display: flex; justify-content: space-between; align-items: baseline; margin: 18px 0 0; font-size: 14px; color: var(--ink-3); }
.timer b { font: 700 18px/1 var(--display); color: var(--ink); }
.meter { height: 4px; background: var(--line); border-radius: 4px; margin-top: 8px; overflow: hidden; }
.meter i { display: block; height: 100%; background: var(--violet); border-radius: 4px; transition: width 1s linear; }
.orderid { margin-top: 18px; font-size: 13px; color: var(--ink-3); }
.orderid code { font-family: var(--mono); color: var(--ink-2); }

.done-mark {
  width: 56px; height: 56px; border-radius: 50%; background: var(--mint-soft); display: grid; place-items: center; margin-bottom: 18px;
}
.done-mark svg { width: 28px; height: 28px; stroke: var(--mint); }
.code-box { display: flex; gap: 10px; align-items: center; margin: 4px 0 14px; }
.code-box .copyrow { flex: 1; }
.code-box .v { font-size: 19px; letter-spacing: .05em; font-weight: 600; }

.foot { text-align: center; color: var(--ink-3); font-size: 13px; padding: 8px 16px 36px; }

[hidden] { display: none !important; }

.step { animation: enter .28s ease-out; }
@keyframes enter { from { opacity: 0; transform: translateX(8px); } to { opacity: 1; transform: none; } }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .stage { grid-template-columns: minmax(0, 560px); gap: 20px; padding-top: 20px; }
  .ticket-col { position: static; }
  .ticket { padding: 20px 22px; --notch: 14px; }
  .ticket-value { font-size: 64px; margin: 14px 0 18px; }
  .ticket-perf { margin: 0 -22px 14px; }
  .ticket-note { display: none; }
  .brand-tag { display: none; }
}
@media (max-width: 520px) {
  .top { padding: 14px 16px; }
  .langs button { padding: 6px 9px; }
  .stage { padding-left: 16px; padding-right: 16px; }
  .panel { border-radius: 22px; padding: 22px 18px; }
  .choices { grid-template-columns: 1fr 1fr; gap: 10px; }
  .choice { padding: 14px; }
  .choice .face { font-size: 28px; }
  .choice .badge { position: static; display: inline-block; margin-top: 8px; }
  .pay-grid { grid-template-columns: 1fr; }
  .qr { order: -1; margin: 0 auto 4px; }
  .actions { flex-direction: column-reverse; align-items: stretch; }
  .actions .btn-primary { max-width: none; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}