:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-strong: #1d4ed8;
  --accent-soft: #eff6ff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.4;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 480px;
  margin: 0 auto;
  padding: 1.25rem 1rem calc(env(safe-area-inset-bottom) + 2rem);
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: .5rem 0 1.25rem;
}

.lead {
  margin: 0 0 1rem;
  color: var(--muted);
}

.badge {
  display: inline-block;
  margin: 0 0 .5rem;
  padding: .3rem .75rem;
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
}

.tag {
  display: inline-block;
  margin-left: .25rem;
  padding: .1rem .5rem;
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.options {
  display: flex;
  flex-direction: column;
  gap: .6rem;
}

.option {
  display: flex;
  align-items: center;
  gap: .85rem;
  padding: 1rem;
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 12px;
  font-size: 1.05rem;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}

.option input {
  width: 1.25rem;
  height: 1.25rem;
  accent-color: var(--accent);
  margin: 0;
}

.option:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.option-button {
  display: block;
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--card);
  color: var(--text);
  border: 2px solid var(--border);
  border-radius: 12px;
  font-size: 1.05rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .05s;
}

.option-button:hover {
  border-color: var(--accent);
}

.option-button:active {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: scale(.99);
}

.field {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.field > span {
  font-size: .9rem;
  color: var(--muted);
  font-weight: 600;
}

input[type="text"] {
  padding: .85rem .9rem;
  font-size: 1.05rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  color: var(--text);
  -webkit-appearance: none;
  appearance: none;
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

button,
.button-secondary {
  padding: 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: 12px;
  border: 0;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  display: block;
}

button {
  background: var(--accent);
  color: #fff;
}

button:active {
  background: var(--accent-strong);
}

.button-secondary {
  background: var(--card);
  color: var(--accent);
  border: 2px solid var(--accent);
}

.link {
  display: block;
  text-align: center;
  padding: .5rem;
  color: var(--muted);
  text-decoration: none;
  font-size: .95rem;
}

.qr {
  display: block;
  width: 100%;
  max-width: 320px;
  margin: 0 auto 1.25rem;
  background: var(--card);
  padding: .75rem;
  border-radius: 12px;
  box-shadow: 0 1px 2px rgba(0,0,0,.05);
  image-rendering: pixelated;
}

.summary {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: .5rem 1rem;
  background: var(--card);
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin: 0 0 1.25rem;
}

.summary dt {
  font-weight: 600;
  color: var(--muted);
  font-size: .9rem;
  align-self: center;
}

.summary dd {
  margin: 0;
  word-break: break-word;
}