/* contact.css — お問い合わせページ専用（フォーム / バリデーション表示 / 送信ボタン状態）。contactページ表示時のみ読み込み。 */

/* ================================================
   Contact Form
   ================================================ */
.section-contact {
  background: var(--color-white);
}

.contact-form-wrap {
  max-width: 680px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-field__label {
  font-size: 0.9375rem;
  font-weight: var(--fw-semibold);
  color: var(--color-navy);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-field__required {
  font-size: 0.75rem;
  font-weight: var(--fw-semibold);
  color: var(--color-white);
  background: var(--color-teal);
  border-radius: var(--radius-sm);
  padding: 1px 6px;
  flex-shrink: 0;
}

.form-field__optional {
  font-size: 0.75rem;
  color: var(--color-gray-sub);
  font-weight: var(--fw-regular);
}

.form-field__input,
.form-field__select,
.form-field__textarea {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-gray-body);
  background: var(--color-white);
  border: 1.5px solid var(--color-gray-border);
  border-radius: var(--radius-md);
  padding: 0.75rem var(--space-4);
  width: 100%;
  transition: border-color var(--duration-fast) var(--easing),
              box-shadow var(--duration-fast) var(--easing);
  appearance: none;
  -webkit-appearance: none;
}

.form-field__input:focus,
.form-field__select:focus,
.form-field__textarea:focus {
  outline: none;
  border-color: var(--color-teal);
  box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.15);
}

.form-field__input.is-error,
.form-field__select.is-error,
.form-field__textarea.is-error {
  border-color: #e53e3e;
}

.form-field__input.is-error:focus,
.form-field__select.is-error:focus,
.form-field__textarea.is-error:focus {
  box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.15);
}

.form-field__select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-right: var(--space-7);
  cursor: pointer;
}

.form-field__textarea {
  resize: vertical;
  min-height: 160px;
  line-height: 1.75;
}

.form-field__error {
  font-size: 0.8125rem;
  color: #e53e3e;
  display: none;
}

.form-field__error.is-visible {
  display: block;
}

/* Honeypot */
.form-field--honeypot {
  display: none !important;
  visibility: hidden;
}

/* Submit area */
.contact-form__submit {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-form__submit-note {
  font-size: 0.8125rem;
  color: var(--color-gray-sub);
  line-height: 1.7;
}

.btn--loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.btn--loading::after {
  content: '';
  position: absolute;
  inset: 50% auto auto 50%;
  translate: -50% -50%;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { rotate: 360deg; }
}

@media (prefers-reduced-motion: reduce) {
  .btn--loading::after { animation: none; }
}

/* Result messages */
.contact-form__result {
  display: none;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: 1rem;
  line-height: 1.7;
}

.contact-form__result.is-success {
  display: block;
  background: rgba(42, 157, 143, 0.08);
  border: 1.5px solid var(--color-teal);
  color: var(--color-navy);
}

.contact-form__result.is-error {
  display: block;
  background: rgba(229, 62, 62, 0.06);
  border: 1.5px solid #e53e3e;
  color: #c53030;
}