:root {
  --navy: #1b2436;
  --navy-deep: #131a29;
  --cream: #f7f3ea;
  --gold: #c9a227;
  --gold-light: #e6c15c;
  --alexander: #7fa0be;
  --chiara: #d9a3a8;
  --line: rgba(247, 243, 234, 0.14);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: radial-gradient(circle at 50% -10%, var(--navy) 0%, var(--navy-deep) 65%);
  color: var(--cream);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 640px;
  margin: 0 auto;
  padding: 56px 24px 80px;
}

.hero {
  text-align: center;
  padding-bottom: 40px;
}

.key {
  width: 130px;
  height: 130px;
  margin-bottom: 8px;
  animation: rise 900ms ease-out both;
}

.key-number {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: 34px;
  fill: var(--gold-light);
}

@keyframes rise {
  from { opacity: 0; transform: translateY(-12px) scale(0.94); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.eyebrow {
  margin: 0 0 8px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--gold-light);
  font-weight: 600;
}

.title {
  font-family: 'Playfair Display', serif;
  font-weight: 700;
  font-size: clamp(28px, 6vw, 40px);
  margin: 0 0 14px;
  line-height: 1.15;
}

.subtitle {
  margin: 0 auto;
  max-width: 420px;
  color: rgba(247, 243, 234, 0.75);
  font-size: 15px;
  line-height: 1.6;
}

.names {
  margin-top: 28px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 12px;
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 20px;
}

.name--alexander { color: var(--alexander); }
.name--chiara { color: var(--chiara); }
.amp { color: rgba(247, 243, 234, 0.4); font-style: normal; }

.details {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 28px 0;
  display: grid;
  gap: 20px;
}

.detail {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 16px;
  align-items: baseline;
}

.detail-label {
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-light);
}

.detail-value {
  font-size: 16px;
  line-height: 1.5;
}

.rsvp {
  padding-top: 40px;
}

.rsvp h2 {
  font-family: 'Playfair Display', serif;
  font-size: 24px;
  margin: 0 0 6px;
}

.rsvp-hint {
  margin: 0 0 24px;
  color: rgba(247, 243, 234, 0.65);
  font-size: 14px;
}

.rsvp-form {
  display: grid;
  gap: 18px;
}

.field { display: grid; gap: 8px; }

.field label, .toggle-field legend {
  font-size: 13px;
  font-weight: 500;
  color: rgba(247, 243, 234, 0.85);
  padding: 0;
}

.field input[type="text"] {
  background: rgba(247, 243, 234, 0.06);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 13px 14px;
  font-size: 16px;
  color: var(--cream);
  font-family: inherit;
}

.field input[type="text"]:focus {
  outline: 2px solid var(--gold);
  outline-offset: 1px;
  border-color: var(--gold);
}

.toggle-field {
  border: none;
  margin: 0;
  padding: 0;
}

.toggle {
  display: flex;
  gap: 10px;
}

.toggle-option {
  flex: 1;
  position: relative;
}

.toggle-option input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
}

.toggle-option span {
  display: block;
  text-align: center;
  padding: 12px 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 15px;
  transition: background 150ms, border-color 150ms, color 150ms;
}

.toggle-option input:checked + span {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--navy-deep);
  font-weight: 600;
}

.toggle-option input:focus-visible + span {
  outline: 2px solid var(--gold-light);
  outline-offset: 2px;
}

.submit {
  margin-top: 6px;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  color: var(--navy-deep);
  border: none;
  border-radius: 10px;
  padding: 15px 0;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: filter 150ms, transform 150ms;
}

.submit:hover { filter: brightness(1.06); }
.submit:active { transform: scale(0.99); }

.form-error {
  min-height: 18px;
  color: #e3897f;
  font-size: 13px;
  margin: 0;
}

.success {
  text-align: center;
  padding: 32px 0;
  font-size: 17px;
}

.footer {
  margin-top: 60px;
  text-align: center;
  color: rgba(247, 243, 234, 0.3);
  font-size: 12px;
  letter-spacing: 0.08em;
}

@media (prefers-reduced-motion: reduce) {
  .key { animation: none; }
}