/**
 * お問い合わせフォーム用スタイル
 *
 * static_html/06_pronto_問い合わせ.html のフォーム部品スタイルを転記。
 * 参照元: 06_pronto_問い合わせ.html（転記ベース）
 */

/* ==========================================
   フォーム部品（ラグジュアリースタイル）
   ========================================== */
.contact-form .form-input,
.form-input {
  width: 100%;
  background-color: transparent;
  border: 1px solid var(--c-border);
  padding: 1rem 1.25rem;
  font-family: var(--f-sans);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  color: var(--c-dark);
  transition: all 0.3s ease;
  outline: none;
}

.contact-form .form-input::placeholder,
.form-input::placeholder {
  color: #999;
  font-weight: 300;
}

.contact-form .form-input:focus,
.form-input:focus {
  border-color: var(--c-accent);
  background-color: #fff;
}

.contact-form .form-input.has-error,
.form-input.has-error {
  border-color: #D32F2F;
  background-color: #FFF8F8;
}

.contact-form .form-select,
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%2214%22%20height%3D%2214%22%20viewBox%3D%220%200%2024%2024%22%20fill%3D%22none%22%20stroke%3D%22%231A1A1A%22%20stroke-width%3D%221.5%22%20stroke-linecap%3D%22round%22%20stroke-linejoin%3D%22round%22%3E%3Cpolyline%20points%3D%226%209%2012%2015%2018%209%22%3E%3C%2Fpolyline%3E%3C%2Fsvg%3E");
  background-repeat: no-repeat;
  background-position: right 1.25rem center;
  background-size: 14px;
  cursor: pointer;
}

.contact-form .form-checkbox,
.form-checkbox {
  appearance: none;
  width: 20px;
  height: 20px;
  border: 1px solid var(--c-dark);
  border-radius: 0;
  outline: none;
  cursor: pointer;
  position: relative;
  background-color: transparent;
  transition: all 0.2s ease;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-form .form-checkbox:checked,
.form-checkbox:checked {
  background-color: var(--c-dark);
}

.contact-form .form-checkbox:checked::after,
.form-checkbox:checked::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 6px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 1px 1px 0;
  transform: rotate(45deg);
}

.contact-form .form-checkbox.has-error,
.form-checkbox.has-error {
  border-color: #D32F2F;
}

/* ==========================================
   エラーメッセージ
   ========================================== */
.contact-form .error-text,
.error-text {
  color: #D32F2F;
  font-family: var(--f-sans);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  margin-top: 0.5rem;
  display: none;
}

.contact-form .error-text.is-visible,
.error-text.is-visible {
  display: block;
  animation: contactFadeIn 0.3s ease;
}

@keyframes contactFadeIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   ステップインジケーター
   ========================================== */
.contact-form .step-item,
.step-item {
  position: relative;
}

.contact-form .step-item:not(:last-child)::after,
.step-item:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -2rem;
  width: 2rem;
  height: 1px;
  background-color: var(--c-border);
  transform: translateY(-50%);
}

@media (max-width: 768px) {
  .contact-form .step-item:not(:last-child)::after,
  .step-item:not(:last-child)::after {
    width: 1rem;
    right: -1rem;
  }
}

.contact-form .step-active,
.step-active {
  color: var(--c-accent);
  font-weight: 500;
  border-bottom: 1px solid var(--c-accent);
}

.contact-form .step-inactive,
.step-inactive {
  color: #999;
}