/* RSVP: расширенная форма с динамическим раскрытием. */

.rsvp__form {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 3vw, 36px);
}

.rsvp__step,
.rsvp__guest {
  border: 0;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rsvp__legend {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: 12px;
  padding: 0;
}

.rsvp__choice {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.rsvp__radio,
.rsvp__chip,
.rsvp__toggle {
  position: relative;
  cursor: pointer;
}

.rsvp__radio input,
.rsvp__chip input,
.rsvp__toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.rsvp__radio-chip {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  border: var(--stroke-mid) solid var(--color-ink);
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-ink);
  background: transparent;
  transition: background-color 250ms ease, color 250ms ease, transform 250ms ease;
}
.rsvp__radio input:checked ~ .rsvp__radio-chip {
  background: var(--color-ink);
  color: var(--color-bg);
}
.rsvp__radio input:checked ~ .rsvp__radio-chip--no {
  background: var(--color-muted);
  border-color: var(--color-muted);
}
.rsvp__radio-chip:hover { transform: translateY(-2px); }
.rsvp__radio input:focus-visible ~ .rsvp__radio-chip {
  outline: 2px solid var(--color-gold);
  outline-offset: 4px;
}

/* === Step 2 === */
.rsvp__details {
  display: flex;
  flex-direction: column;
  gap: clamp(24px, 3vw, 36px);
  padding: clamp(24px, 3vw, 36px);
  background: var(--color-paper);
  border: var(--stroke-thin) solid var(--color-line);
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
  animation: rsvp-reveal 500ms var(--ease-out-expo);
}
@keyframes rsvp-reveal {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
.rsvp__details[hidden] { display: none; }

.rsvp__row {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* === Поля ввода === */
.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.field__label {
  font-size: var(--fs-eyebrow);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-muted);
  font-weight: 500;
}
.field__input,
.field__textarea {
  width: 100%;
  background: var(--color-bg);
  color: var(--color-ink);
  border: var(--stroke-thin) solid var(--color-line);
  border-radius: 8px;
  padding: 14px 18px;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  transition: border-color 200ms ease, background-color 200ms ease;
}
.field__textarea { resize: vertical; min-height: 96px; }
.field__input:focus,
.field__textarea:focus {
  outline: none;
  border-color: var(--color-gold);
  background: var(--color-paper);
}

/* === Чипы для меню и алкоголя === */
.rsvp__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.rsvp__chip span {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--color-bg);
  border: var(--stroke-thin) solid var(--color-line);
  font-size: var(--fs-small);
  color: var(--color-ink);
  transition: background-color 200ms ease, border-color 200ms ease, color 200ms ease, transform 200ms ease;
  user-select: none;
}
.rsvp__chip:hover span { transform: translateY(-1px); border-color: var(--color-gold); }
.rsvp__chip input:checked ~ span {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: var(--color-bg);
}
.rsvp__chip input:focus-visible ~ span {
  outline: 2px solid var(--color-gold);
  outline-offset: 3px;
}

/* === Toggle для спутника === */
.rsvp__toggle {
  align-self: flex-start;
}
.rsvp__toggle-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--color-bg);
  border: var(--stroke-thin) dashed var(--color-ink-soft);
  font-size: var(--fs-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink);
  transition: background-color 200ms ease, color 200ms ease, border-style 200ms ease;
}
.rsvp__toggle-chip::before {
  content: "+";
  font-size: 1.1rem;
  line-height: 1;
}
.rsvp__toggle input:checked ~ .rsvp__toggle-chip {
  background: var(--color-ink);
  color: var(--color-bg);
  border-style: solid;
  border-color: var(--color-ink);
}
.rsvp__toggle input:checked ~ .rsvp__toggle-chip::before { content: "−"; }

.rsvp__partner-fields {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px dashed var(--color-line);
  animation: rsvp-reveal 400ms var(--ease-out-expo);
}
.rsvp__partner-fields[hidden] { display: none; }

/* === Submit === */
.rsvp__submit {
  align-self: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 44px;
  border: var(--stroke-mid) solid var(--color-ink);
  border-radius: 999px;
  background: var(--color-ink);
  color: var(--color-bg);
  font-family: var(--font-body);
  font-size: var(--fs-small);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 250ms ease, transform 250ms ease;
}
.rsvp__submit:hover:not(:disabled) {
  background: var(--color-gold);
  border-color: var(--color-gold);
  transform: translateY(-2px);
}
.rsvp__submit:disabled { opacity: 0.55; cursor: progress; }

.rsvp__status {
  text-align: center;
  font-size: var(--fs-small);
  color: var(--color-muted);
  min-height: 1.2em;
}
.rsvp__status--err { color: #8C3A28; }
.rsvp__status--ok  { color: var(--color-sage); }

/* === Состояние «отправлено» === */
.rsvp__success {
  display: none;
  text-align: center;
  padding: clamp(40px, 6vw, 64px);
  background: var(--color-paper);
  border: var(--stroke-thin) solid var(--color-line);
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
  max-width: 560px;
  margin: 0 auto;
}
.rsvp__success-hand {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  color: var(--color-gold-deep);
  margin-bottom: 14px;
}
.rsvp.is-submitted .rsvp__form    { display: none; }
.rsvp.is-submitted .rsvp__success { display: block; animation: rsvp-reveal 500ms var(--ease-out-expo); }

@media (prefers-reduced-motion: reduce) {
  .rsvp__details, .rsvp__partner-fields, .rsvp__success { animation: none; }
}