.helkema-reservation{
  max-width:820px;
  margin:2rem auto;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;
  color:#2b2b2b
}

.helkema-card{
  background:#fff;
  border:1px solid #e4e4e4;
  border-radius:16px;
  padding:clamp(20px,4vw,40px);
  box-shadow:0 8px 28px rgba(0,0,0,.06)
}

.helkema-header{
  text-align:center;
  margin-bottom:20px
}

.helkema-header h2{
  margin:0;
  font-size:clamp(1.55rem,4vw,2rem);
  color:#666
}

.helkema-notice{
  background:#f7f8f8;
  border-radius:10px;
  padding:16px;
  line-height:1.8;
  margin-bottom:24px
}

.helkema-fieldset{
  border:0;
  padding:0;
  margin:0 0 22px
}

.helkema-fieldset legend,
.helkema-field>label{
  display:block;
  font-weight:700;
  margin-bottom:8px
}

.helkema-category-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px
}

.helkema-category-grid label{
  display:block
}

.helkema-category-grid input{
  position:absolute;
  opacity:0
}

.helkema-category-grid span{
  display:flex;
  min-height:58px;
  align-items:center;
  justify-content:center;
  text-align:center;
  border:1px solid #bbb;
  border-radius:10px;
  padding:10px;
  cursor:pointer
}

.helkema-category-grid input:checked+span{
  border-width:2px;
  font-weight:700
}

.helkema-category-grid small{
  display:block;
  margin-left:3px
}

.helkema-field{
  margin-bottom:18px
}

.helkema-two-columns{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:16px
}

.helkema-field input,
.helkema-field select,
.helkema-field textarea{
  box-sizing:border-box;
  width:100%;
  border:1px solid #bbb;
  border-radius:8px;
  padding:12px 13px;
  font:inherit;
  background:#fff
}

.helkema-field textarea{
  resize:vertical
}

.helkema-required{
  font-size:.8em;
  color:#d42318
}

.helkema-consent{
  display:flex;
  gap:10px;
  align-items:flex-start;
  line-height:1.6;
  margin:12px 0
}

.helkema-consent input{
  margin-top:.35em
}

.helkema-privacy{
  font-size:.9rem;
  color:#666;
  line-height:1.7
}

.helkema-submit{
  display:block;
  width:100%;
  border:0;
  border-radius:10px;
  padding:14px;
  font:inherit;
  font-weight:700;
  cursor:pointer;
  background:#333;
  color:#fff
}

.helkema-submit:disabled{
  opacity:.55;
  cursor:wait
}

.helkema-status{
  margin:16px 0;
  line-height:1.7
}

.helkema-status.is-error{
  color:#d42318
}

/* 予約完了メッセージ */
.helkema-status.is-success{
  display:block;
  margin:24px 0 18px;
  padding:22px 24px;
  border:2px solid #067647;
  border-radius:12px;
  background:#f0fdf4;
  color:#067647;
  font-size:20px;
  line-height:1.7;
  font-weight:700;
  text-align:center;
  box-sizing:border-box
}

.helkema-field-help{
  margin-top:6px;
  margin-bottom:0;
  font-size:.9rem;
  line-height:1.7;
  color:#666
}

@media (max-width:640px){
  .helkema-category-grid,
  .helkema-two-columns{
    grid-template-columns:1fr
  }

  .helkema-category-grid span{
    min-height:48px
  }

  .helkema-status.is-success{
    margin:20px 0 16px;
    padding:18px 16px;
    font-size:18px;
    line-height:1.6
  }
}