/* ============================================================
   components/forms.css
   フォーム要素・バリデーション表示
   ============================================================ */

/* ------------------------------------------------------------
   フォームグループ
   ------------------------------------------------------------ */
.form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-base);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4em;
}

/* 2カラム横並び */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-base);
}
@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ------------------------------------------------------------
   ラベル
   ------------------------------------------------------------ */
.form-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
}

.form-label__required {
  font-size: 0.75rem;
  color: #e53935;
  margin-left: 0.4em;
  font-weight: 400;
}

.form-label__optional {
  font-size: 0.75rem;
  color: var(--color-text-sub);
  margin-left: 0.4em;
  font-weight: 400;
}

/* ------------------------------------------------------------
   入力要素（共通）
   ------------------------------------------------------------ */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75em 1em;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 15%, transparent);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #bbb;
}

/* テキストエリア */
.form-textarea {
  resize: vertical;
  min-height: 140px;
}

/* セレクト */
.form-select-wrap {
  position: relative;
}
.form-select-wrap::after {
  content: '';
  position: absolute;
  right: 1em;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--color-text-sub);
  pointer-events: none;
}
.form-select {
  padding-right: 2.5em;
  cursor: pointer;
}

/* ------------------------------------------------------------
   チェックボックス・ラジオ
   ------------------------------------------------------------ */
.form-check {
  display: flex;
  align-items: center;
  gap: 0.6em;
  cursor: pointer;
  font-size: 0.95rem;
}

.form-check__input {
  width: 1.1em;
  height: 1.1em;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}

/* チェックグループ（横並び） */
.form-check-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75em var(--spacing-base);
}

/* ------------------------------------------------------------
   バリデーション
   ------------------------------------------------------------ */
.form-input--error,
.form-textarea--error,
.form-select--error {
  border-color: #e53935;
}
.form-input--error:focus,
.form-textarea--error:focus {
  box-shadow: 0 0 0 3px rgba(229, 57, 53, 0.15);
}

.form-error {
  font-size: 0.8rem;
  color: #e53935;
  margin-top: 0.25em;
}

.form-success {
  font-size: 0.8rem;
  color: #43a047;
  margin-top: 0.25em;
}

/* ------------------------------------------------------------
   ヒントテキスト
   ------------------------------------------------------------ */
.form-hint {
  font-size: 0.8rem;
  color: var(--color-text-sub);
  margin-top: 0.25em;
}

/* ------------------------------------------------------------
   送信完了メッセージ（デモ用の擬似送信後に表示）
   ------------------------------------------------------------ */
.form-complete {
  display: none;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-base);
}
.form-complete.is-visible {
  display: block;
}
.form-complete__icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}
.form-complete__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5em;
}
.form-complete__text {
  color: var(--color-text-sub);
}

/* ------------------------------------------------------------
   フォームラッパー（セクション内で使うコンテナ）
   ------------------------------------------------------------ */
.form-wrap {
  max-width: 640px;
  margin-inline: auto;
}