/* ============================================================
  フォームコンポーネント
  ============================================================ */

.form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* フィールドグループ */
.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* 2カラムグリッド（姓・名） */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5)
}

/* ラベル */
.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* 入力フィールド共通 */
.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  transition: border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
  border-color: rgba(124, 58, 237, 0.4);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}

/* エラー状態 */
.form-input--error,
.form-textarea--error,
.form-select--error {
  border-color: var(--color-error);
}

.form-input--error:focus,
.form-textarea--error:focus,
.form-select--error:focus {
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

/* テキストエリア */
.form-textarea {
  min-height: 140px;
  resize: vertical;
  line-height: var(--leading-relaxed);
}

/* セレクト */
.form-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='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
  cursor: pointer;
  color: var(--color-text-primary);
}

.form-select option {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

/* エラーメッセージ */
.form-error {
  font-size: var(--text-sm);
  color: var(--color-error);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  min-height: 1.2em;
}

.form-error svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ガイドテキスト */
.form-hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* チェックボックス */
.form-checkbox-wrapper {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}

.form-checkbox {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-tertiary);
  cursor: pointer;
  flex-shrink: 0;
  margin-top: 1px;
  -webkit-appearance: none;
  appearance: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--duration-fast),
    background-color var(--duration-fast);
}

.form-checkbox:checked {
  background: var(--color-primary);
  border-color: var(--color-primary);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
}

.form-checkbox:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 3px;
}

.form-checkbox--error {
  border-color: var(--color-error);
}

.form-checkbox-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.form-checkbox-label a {
  color: var(--color-primary-light);
  text-decoration: underline;
}

/* フォームサポート情報 */
.form-support {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.form-support__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

.form-support__item svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary-light);
  flex-shrink: 0;
  margin-top: 2px;
}

/* 送信成功・エラー状態 */
.form-global-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-sm);
  color: #fca5a5;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

/* フォームレイアウト */
.form-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

@media (max-width: 1023px) {
  .form-layout {
    grid-template-columns: 1fr;
  }
}

/* フォームカード */
.form-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
}

@media (max-width: 767px) {
  .form-card {
    padding: var(--space-6);
  }
}

.form-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: var(--font-bold);
  padding: 1px 6px;
  border-radius: 3px;
  line-height: 1.5
}

.form-badge--required {
  background: rgba(239, 68, 68, .15);
  color: #f87171
}

.form-badge--optional {
  background: rgba(107, 114, 128, .15);
  color: var(--color-text-muted)
}