:root {
  --bg: #0f172a;
  --surface: #1e293b;
  --text: #f8fafc;
  --muted: #94a3b8;
  --primary: #2563eb;
  --accent: #1d4ed8;
  --danger: #ef4444;
  --ok: #22c55e;
  --space-xs: 0.375rem;
  --space-sm: 0.625rem;
  --space-md: 1rem;
  --space-lg: 1.25rem;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.app {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-md) 2rem;
}

.card {
  background: var(--surface);
  border-radius: 16px;
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
}

h1, h2 {
  margin: 0 0 var(--space-sm);
  font-size: 1.25rem;
}

.guest-name {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 var(--space-sm);
}

p {
  color: var(--muted);
  line-height: 1.5;
  margin: 0 0 var(--space-sm);
}

label {
  display: block;
  font-size: 0.875rem;
  margin: var(--space-md) 0 var(--space-xs);
}

label:first-child,
.child-row > label:first-child {
  margin-top: 0;
}

input, select, button {
  font: inherit;
}

.field-input,
input.field-input,
select {
  width: 100%;
  padding: 0.75rem 0.875rem;
  border-radius: 10px;
  border: 1px solid #334155;
  background: #0f172a;
  color: var(--text);
  margin: 0;
}

.field-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.field-input.invalid {
  border-color: var(--danger);
}

.field-hint {
  margin: var(--space-xs) 0 0;
  font-size: 0.8125rem;
  color: var(--muted);
}

.field-hint.error {
  color: var(--danger);
}

.date-row {
  display: flex;
  align-items: stretch;
  gap: var(--space-sm);
}

.date-text {
  flex: 1;
  min-width: 0;
}

.date-picker-btn {
  flex: 0 0 3rem;
  width: 3rem;
  min-height: 3rem;
  padding: 0;
  border-radius: 10px;
  background: #334155;
  color: var(--text);
  font-size: 1.25rem;
  line-height: 1;
}

.date-picker-btn:active {
  transform: scale(0.97);
}

.date-native {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.btn-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.btn-primary,
.btn-secondary {
  width: 100%;
  border: 0;
  border-radius: 12px;
  padding: 0.875rem 1rem;
  cursor: pointer;
  font-weight: 600;
  margin: 0;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-secondary {
  background: #334155;
  color: white;
}

.btn-primary:disabled,
.btn-secondary:disabled,
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.club-grid {
  display: grid;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.club-btn {
  width: 100%;
  text-align: left;
  background: #0f172a;
  border: 2px solid #334155;
  border-radius: 12px;
  padding: 1rem 1.125rem;
  cursor: pointer;
  margin: 0;
  color: #f8fafc;
  -webkit-text-fill-color: #f8fafc;
  font-size: 1.0625rem;
  font-weight: 600;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.club-btn.selected {
  color: #ffffff;
  -webkit-text-fill-color: #ffffff;
  background: var(--primary);
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}

.child-row {
  border: 1px solid #334155;
  border-radius: 12px;
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.child-row:last-child {
  margin-bottom: 0;
}

.doc-box {
  max-height: 220px;
  overflow: auto;
  background: #0f172a;
  border-radius: 10px;
  padding: 0.75rem;
  margin-bottom: var(--space-sm);
  font-size: 0.875rem;
}

.checkbox-row {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
  margin: var(--space-sm) 0 0;
}

.checkbox-row input {
  width: auto;
  margin: 0.2rem 0 0;
}

.checkbox-row-center {
  justify-content: center;
  text-align: center;
}

.visit-code {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--text);
  margin: var(--space-md) 0;
}

.qr-wrap {
  text-align: center;
}

.qr-wrap img {
  max-width: 100%;
  border-radius: 12px;
  background: white;
  padding: 0.5rem;
}

.error {
  color: var(--danger);
  font-size: 0.875rem;
}

.meta {
  color: var(--muted);
  font-size: 0.875rem;
}

.loader {
  text-align: center;
  padding: 2rem;
  color: var(--muted);
}

.step-dots {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.step-dots span {
  flex: 1;
  height: 4px;
  border-radius: 999px;
  background: #334155;
}

.step-dots span.active {
  background: var(--primary);
}