.kuponai-check {
  max-width: 720px;
  margin: 0 auto;
}

.kuponai-check-title {
  margin: 20px 0 16px;
  text-align: center;
  color: #fff;
}

.kuponai-check-form {
  margin-bottom: 16px;
}

.kuponai-check-row {
  display: flex;
  gap: 12px;
}

.kuponai-input {
  flex: 1;
  height: 52px;
  padding: 0 16px;
  border: 1px solid #d6d6d6;
  border-radius: 6px;
  background: #fff;
  color: #1f1f1f;
  font-size: 16px;
}

.kuponai-input:focus {
  outline: none;
  border-color: #333;
}

.kuponai-btn {
  height: 52px;
  padding: 0 22px;
  border: 0;
  border-radius: 6px;
  background: #1f1f1f;
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.kuponai-btn:hover {
  background: #000;
}

.kuponai-check-error {
  margin-top: 12px;
  padding: 10px 12px;
  border-radius: 6px;
  background: #ffeceb;
  color: #8a1a14;
}

.kuponai-check-info {
  margin: 0;
  padding: 0;
  list-style: none;
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.35);
}

.kuponai-check-info li {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid #dd9933;
}

.kuponai-check-info li:last-child {
  border-bottom: 0;
}

.kuponai-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
}

.kuponai-value {
  font-weight: 600;
  color: #ffffff;
}

.kuponai-status.is-valid {
  color: #3ddc7c;
}

.kuponai-status.is-invalid {
  color: #ff5b5b;
}

@media (max-width: 640px) {
  .kuponai-check-row {
    flex-direction: column;
  }

  .kuponai-btn {
    width: 100%;
  }
}