.form-success-modal {
  position: fixed;
  inset: 0;
  z-index: 12000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}

.form-success-modal.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.form-success-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 10, 0.62);
  backdrop-filter: blur(4px);
}

.form-success-modal__panel {
  position: relative;
  width: min(100%, 440px);
  background: #fff;
  border-radius: 1.25rem;
  padding: 2rem 1.75rem 1.5rem;
  text-align: center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  transform: translateY(16px) scale(0.96);
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}

.form-success-modal.is-open .form-success-modal__panel {
  transform: translateY(0) scale(1);
}

.form-success-modal__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 1.25rem;
  border-radius: 50%;
  background: rgba(227, 24, 55, 0.1);
  color: #e31837;
  display: flex;
  align-items: center;
  justify-content: center;
}

.form-success-modal__icon svg {
  width: 34px;
  height: 34px;
}

.form-success-modal__title {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.3;
  color: #18181b;
  letter-spacing: -0.02em;
}

.form-success-modal__message {
  margin: 0 0 1.5rem;
  font-size: 0.98rem;
  line-height: 1.65;
  color: #52525b;
}

.form-success-modal__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  padding: 0.85rem 1.75rem;
  border: none;
  border-radius: 999px;
  background: #e31837;
  color: #fff;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.form-success-modal__btn:hover {
  background: #c41430;
  transform: translateY(-1px);
}

.form-success-modal__btn:focus-visible {
  outline: 2px solid #e31837;
  outline-offset: 3px;
}