/**
 * 留言表单通用结构（与 message_form.html 配套，不含主题色）
 */
.site-form-shell {
	width: 100%;
	max-width: 100%;
	box-sizing: border-box;
}

.site-form-shell .site-form__grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 16px 20px;
	width: 100%;
	align-items: start;
}

.site-form-shell .site-form__field--full,
.site-form-shell .site-form__submit-row {
	grid-column: 1 / -1;
}

.site-form-shell .site-form__field {
	position: relative;
	width: 100%;
	box-sizing: border-box;
}

.site-form-shell .site-form__label {
	display: block;
	margin: 0 0 8px;
	padding: 0;
	font-size: 15px;
	line-height: 1.3;
	font-weight: 400;
}

.site-form-shell .site-form__required {
	font-weight: 700;
	font-style: normal;
	margin-right: 4px;
}

.site-form-shell .site-form__error {
	display: block;
	margin-top: 6px;
	min-height: 1.2em;
	font-size: 13px;
	line-height: 1.4;
}

.site-form-shell .site-form__error:empty {
	display: none;
}

.site-form-shell .site-form__feedback {
	grid-column: 1 / -1;
	margin: 0 0 8px;
	padding: 10px 14px;
	font-size: 14px;
	line-height: 1.5;
	text-align: center;
	border-radius: 4px;
}

.site-form-shell .site-form__feedback[hidden] {
	display: none !important;
}

.site-form-shell .site-form__field.is-invalid .site-form__input,
.site-form-shell .site-form__field.is-invalid .site-form__textarea {
	border-width: 2px;
}

.site-form-shell .site-form.is-submitting {
	opacity: 0.72;
	pointer-events: none;
}

.site-form-shell .site-form__submit-row {
	padding-top: 4px;
	text-align: center;
}

.site-form-shell .site-form__submit:disabled {
	opacity: 0.65;
	cursor: wait;
}

.site-form-shell .site-form__captcha-row {
	display: flex;
	align-items: stretch;
	gap: 12px;
	width: 100%;
}

.site-form-shell .site-form__captcha-input {
	flex: 1 1 auto;
	min-width: 0;
}

.site-form-shell .site-form__captcha-refresh {
	flex: 0 0 auto;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	margin: 0;
	padding: 0;
	border: 1px solid #ccc;
	border-radius: 4px;
	background: #fff;
	cursor: pointer;
	overflow: hidden;
}

.site-form-shell .site-form__captcha-refresh:hover {
	border-color: #999;
}

.site-form-shell .site-form__captcha-img {
	display: block;
	width: 158px;
	height: 40px;
	object-fit: contain;
}

.site-form-shell .site-form__field.is-invalid .site-form__captcha-refresh {
	border-width: 2px;
}

@media (max-width: 767px) {
	.site-form-shell .site-form__grid {
		grid-template-columns: 1fr;
		gap: 16px;
	}

	.site-form-shell .site-form__submit {
		width: 100%;
		max-width: 100%;
	}
}