:root {
  --bg0: #0b0f1a;
  --bg1: #0c1629;
  --stroke: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.62);
  --r: 22px;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(1200px 500px at 15% 5%, rgba(108, 255, 214, 0.18), transparent 60%),
    radial-gradient(900px 450px at 85% 20%, rgba(122, 162, 255, 0.16), transparent 60%),
    radial-gradient(700px 380px at 55% 80%, rgba(255, 114, 214, 0.12), transparent 60%),
    linear-gradient(180deg, var(--bg1), var(--bg0));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.shell {
  width: min(420px, 92vw);
  display: grid;
  gap: 16px;
}

.card {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--stroke);
  border-radius: var(--r);
  padding: 22px;
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45);
  display: grid;
  gap: 16px;
}

.hidden {
  display: none;
}

.meta {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.title {
  font-size: 16px;
  font-weight: 800;
  line-height: 1.3;
}

.subtitle {
  font-size: 13px;
  color: var(--muted);
}

.progress {
  position: relative;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.progress.is-bright {
  border-color: rgba(255, 255, 255, 0.25);
}

.progress__fill {
  height: 100%;
  width: var(--p, 0%);
  background: linear-gradient(90deg, rgba(110, 198, 255, 0.2), rgba(153, 255, 207, 0.55));
  transition: width 0.2s ease;
}

.progress__glow {
  position: absolute;
  inset: 0;
  box-shadow: 0 0 var(--g, 0px) rgba(110, 198, 255, var(--a, 0));
  opacity: 1;
  transition: box-shadow 0.2s ease;
}

.pill {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 10px;
  border-radius: calc(var(--r) - 6px);
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, 0.04);
}

.option {
  flex: 1 1 0;
  min-width: 120px;
  height: 64px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  transition: border 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.option:hover,
.option:focus-visible {
  border-color: color-mix(in srgb, var(--c, #6ec6ff) 65%, #ffffff 35%);
  box-shadow: 0 0 18px rgba(110, 198, 255, 0.25);
  outline: none;
}

.option.is-selected {
  border-color: color-mix(in srgb, var(--c, #6ec6ff) 80%, #ffffff 20%);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 22px rgba(110, 198, 255, 0.3);
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.step {
  font-family: ui-monospace, SFMono-Regular, SFMono-Regular, Menlo, monospace;
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--muted);
}

button {
  cursor: pointer;
  border: none;
}

.ghost,
.primary {
  height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.ghost {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--text);
}

.primary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text);
}

.summary {
  display: grid;
  gap: 10px;
  font-size: 12px;
  color: var(--muted);
}

.summary span {
  display: flex;
  justify-content: space-between;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 420px) {
  .option {
    min-width: 100%;
  }
}