:root {
  --paper: #f5f1e8;
  --paper-edge: #ede5d3;
  --white: #fffdf9;
  --ink: #212b22;
  --ink-soft: #5b5d50;
  --line: #dcd2b9;
  --accent: #a07c2e;
  --accept: #5f7a52;
  --accept-tint: #eef2e7;
  --accept-line: #c6d6bc;
  --decline: #b15d48;
  --decline-tint: #f7eae5;
  --decline-line: #e5c6b8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(ellipse at top, var(--paper-edge), transparent 60%),
    var(--paper);
  color: var(--ink);
  font-family: "Work Sans", sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
}

.card {
  position: relative;
  width: 100%;
  max-width: 560px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 56px 52px;
  box-shadow:
    0 1px 2px rgba(33, 43, 34, 0.04),
    0 20px 40px rgba(33, 43, 34, 0.06);
}

@media (prefers-reduced-motion: no-preference) {
  .card {
    animation: rise-in 0.8s cubic-bezier(0.2, 0.7, 0.3, 1) both;
  }
}
@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.lang-switch {
  position: absolute;
  top: 22px;
  right: 22px;
  display: flex;
  border: 1px solid var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.lang-btn {
  background: var(--white);
  border: none;
  border-right: 1px solid var(--line);
  padding: 5px 9px;
  font-family: "Work Sans", sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  color: var(--ink-soft);
  cursor: pointer;
}
.lang-btn:last-child {
  border-right: none;
}
.lang-btn[aria-pressed="true"] {
  background: var(--ink);
  color: var(--white);
}
.lang-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.monogram {
  width: 68px;
  height: 68px;
  border: 1px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 26px;
  font-family: "Fraunces", serif;
  font-style: italic;
  font-size: 19px;
  color: var(--accent);
}

.headline {
  font-family: "Fraunces", serif;
  font-weight: 500;
  font-size: clamp(1.9rem, 6vw, 2.6rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-align: center;
  color: var(--ink);
  margin: 0 0 16px;
}

.subline {
  font-family: "Fraunces", serif;
  font-style: italic;
  font-size: 1.15rem;
  line-height: 1.5;
  text-align: center;
  color: var(--ink-soft);
  max-width: 32ch;
  margin: 0 auto;
}

.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 32px 0;
}
.divider-line {
  flex: 1;
  height: 1px;
  background: var(--line);
}
.divider-mark {
  width: 6px;
  height: 6px;
  background: var(--accent);
  transform: rotate(45deg);
  flex-shrink: 0;
}

.greeting {
  font-family: "Fraunces", serif;
  font-size: 1.3rem;
  text-align: center;
  margin: 0 0 10px;
}

.body-copy {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--ink-soft);
  text-align: center;
  max-width: 38ch;
  margin: 0 auto;
}

.details {
  text-align: center;
  margin-top: 26px;
}
.detail-date {
  font-family: "Fraunces", serif;
  font-weight: 500;
  font-size: 1.3rem;
  margin: 0 0 4px;
}
.detail-place {
  font-size: 0.95rem;
  color: var(--ink-soft);
  margin: 0;
}

fieldset {
  border: none;
  padding: 0;
  margin: 0;
}
legend {
  font-family: "Fraunces", serif;
  font-size: 1.15rem;
  padding: 0 0 16px;
  width: 100%;
  text-align: center;
}

.field {
  margin-bottom: 22px;
}
.field label {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.field input[type="text"],
.field textarea {
  width: 100%;
  border: none;
  border-bottom: 1px solid var(--line);
  background: transparent;
  font-family: "Work Sans", sans-serif;
  font-size: 1rem;
  color: var(--ink);
  padding: 6px 2px;
  resize: vertical;
}
.field input[type="text"]:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: var(--accent);
}

.toggle-row {
  display: flex;
  gap: 12px;
}
.rsvp-toggle input[type="radio"] {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}
.toggle-btn {
  flex: 1 1 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-radius: 2px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  text-align: center;
  transition:
    background-color 0.18s ease,
    border-color 0.18s ease,
    color 0.18s ease;
}
.toggle-btn svg {
  width: 13px;
  height: 13px;
  opacity: 0.55;
  flex-shrink: 0;
  transition: opacity 0.18s ease;
}
.toggle-accept {
  background: var(--accept-tint);
  border-color: var(--accept-line);
  color: var(--accept);
}
.toggle-decline {
  background: var(--decline-tint);
  border-color: var(--decline-line);
  color: var(--decline);
}
#rsvpYes:checked + .toggle-accept {
  background: var(--accept);
  border-color: var(--accept);
  color: var(--white);
}
#rsvpYes:checked + .toggle-accept svg {
  opacity: 1;
}
#rsvpNo:checked + .toggle-decline {
  background: var(--decline);
  border-color: var(--decline);
  color: var(--white);
}
#rsvpNo:checked + .toggle-decline svg {
  opacity: 1;
}
.rsvp-toggle input:focus-visible + .toggle-btn {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.guest-section {
  margin-top: 26px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.stepper-field {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.stepper-field label {
  margin-bottom: 0;
}
.stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 2px;
}
.stepper button {
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  font-size: 18px;
  color: var(--ink);
  cursor: pointer;
  font-family: "Work Sans", sans-serif;
}
.stepper button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.stepper button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}
.stepper span {
  min-width: 28px;
  text-align: center;
  font-size: 0.95rem;
}

.extra-guest-field {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition:
    opacity 0.25s ease,
    max-height 0.25s ease,
    margin 0.25s ease;
  margin-bottom: 0;
}
.extra-guest-field.visible {
  opacity: 1;
  max-height: 80px;
  margin-bottom: 22px;
}

#extraGuestFields {
  margin-top: 18px;
}

.submit-btn {
  width: 100%;
  padding: 16px;
  background: var(--ink);
  color: var(--white);
  border: none;
  border-radius: 2px;
  font-family: "Work Sans", sans-serif;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background-color 0.18s ease;
}
.submit-btn:hover {
  background: #151d16;
}
.submit-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.rsvp-note {
  text-align: center;
  font-size: 0.82rem;
  color: var(--ink-soft);
  margin: 14px 0 0;
}

.confirmation {
  text-align: center;
  padding: 24px 0 4px;
}
.confirmation p {
  font-family: "Fraunces", serif;
  font-size: 1.3rem;
  line-height: 1.5;
  margin: 0;
}

@media (max-width: 520px) {
  .card {
    padding: 52px 26px 40px;
  }
  .toggle-row {
    flex-direction: column;
  }
  .lang-switch {
    top: 14px;
    right: 14px;
  }
}