/* === 0. Survey Layout Wrapper === */
.survey-layout-wrapper {
    background-color: rgb(238, 238, 238);
}

/* === 1. Survey Layout === */
.survey-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: var(--space-2xl);
    padding: var(--space-xl) 0 var(--space-3xl);
}

/* === 2. Survey Sidebar === */
.survey-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--space-lg));
    height: fit-content;
}

/* === 3. Survey Steps === */
.survey-steps__list {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-xl);
}

.survey-steps__item {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    font-size: var(--font-size-base);
    color: var(--color-text);
    cursor: pointer;
    transition: color var(--transition-fast);
    border-bottom: 1px solid var(--color-border-light);
}

.survey-steps__item:last-child {
    border-bottom: none;
}

.survey-steps__item:hover {
    color: var(--color-text);
}

.survey-steps__item--active,
.survey-steps__item--completed {
    font-weight: var(--font-weight-medium);
}

.survey-steps__item--completed {
    color: var(--color-text);
}

.survey-steps__left {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 10px;
    position: relative;
}

.survey-steps__number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--color-text);
    color: var(--color-white);
    font-size: 13px;
    font-weight: var(--font-weight-bold);
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.survey-steps__item--active .survey-steps__number {
    background-color: var(--color-text);
}

.survey-steps__item--completed .survey-steps__number {
    background-color: var(--color-text);
}

/* 虚线连接 - 参考 tem.png 效果 */
.survey-steps__item {
    position: relative;
}

/* 步骤之间的虚线连接：从当前数字圆圈底部连接到下一个数字圆圈顶部 */
.survey-steps__item:not(:last-child)::after {
    content: "";
    position: absolute;
    left: 12px; /* 数字圆圈宽度24px的一半，居中对齐 */
    top: 44px; /* padding-top 20px + 数字圆圈高度 24px = 44px，从当前数字底部开始 */
    bottom: -20px; /* 向下延伸，跨越到下一个项的 padding-top 区域，连接到下一个数字圆圈顶部 */
    width: 1px;
    background: repeating-linear-gradient(
        to bottom,
        #cccccc,
        #cccccc 2px,
        transparent 2px,
        transparent 5px
    );
    z-index: 0;
}

.survey-steps__label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
}

.survey-steps__status {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 4px;
    font-size: 13px;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.survey-steps__status-img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}

.survey-steps__status-text {
    font-size: 13px;
    white-space: nowrap;
}

.survey-steps__item--completed .survey-steps__status {
    color: var(--color-primary);
}

.survey-steps__item--completed .survey-steps__status-icon {
    font-weight: var(--font-weight-bold);
}

/* === 4. Survey Instructions === */
.survey-instructions {
    background-color: transparent;
    border-radius: var(--radius-sm);
}

.survey-instructions__title {
    font-size: 12px;
    font-weight: var(--font-weight-normal);
    color: rgb(92, 92, 92);
}

.survey-instructions__list {
    margin: 0;
}

.survey-instructions__item {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-loose);
}

/* === 5. Survey Form Wrapper === */
.survey-form-wrapper {
    background-color: var(--color-white);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    padding: var(--space-lg);
}

/* === 6. Survey Form Header === */
.survey-form__header {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    padding: 0 0 var(--space-md) 0;
    margin-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-bg-dark);
}

.survey-form__meta {
    display: flex;
    flex-wrap: nowrap;
    gap: var(--space-xl);
}

.survey-form__lang {
    display: flex;
    flex-wrap: nowrap;
    gap: 0;
}

.survey-form__lang-btn {
    padding: 4px 12px;
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    background-color: var(--color-bg-gray);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 80px;
}

.survey-form__lang-btn:hover {
    border-color: var(--color-text);
}

.survey-form__lang-btn--active {
    color: var(--color-white);
    background-color: var(--color-text);
    border-color: var(--color-text);
}

/* === 7. Survey Form === */
.survey-form {
    padding: 0;
}

/* === 8. Survey Section === */
.survey-section {
    border: none;
    padding: 0;
    margin: 0 0 var(--space-xl);
}

.survey-section:last-of-type {
    margin-bottom: var(--space-lg);
}

.survey-section__title {
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    padding-bottom: var(--space-sm);
    display: flex;
    align-items: baseline;
    gap: 5px;
}

.survey-section__required {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    color: var(--color-text-muted);
}

.required-star {
    color: red;
    font-size: 12px;
    vertical-align: baseline;
    line-height: 1;
}

.survey-section__content {
}

/* === 9. Survey Alert === */
.survey-alert {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-text);
    color: var(--color-white);
    margin-bottom: var(--space-lg);
    border-radius: var(--radius-sm);
}

.survey-alert__icon {
    font-size: 16px;
}

.survey-alert__text {
    font-size: var(--font-size-base);
}

/* === 10. Survey Form Fields === */
.survey-form__row {
    display: grid;
    gap: var(--space-md);
}

.survey-form__row--2col {
    grid-template-columns: 1fr 1fr;
}

.survey-form__row--3col {
    grid-template-columns: 1fr 1fr 1fr;
}

.survey-form__field {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.survey-form__field--inline {
    flex-direction: row;
    align-items: center;
    gap: var(--space-sm);
}

.survey-form__label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    color: var(--color-text);
    white-space: nowrap;
    min-width: fit-content;
    padding-left: 12px;
}

.survey-form__label--required {
    position: relative;
}

.survey-form__label--required::before {
    content: "*";
    color: red;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
}

.survey-form__input {
    flex: 1;
    font-size: var(--font-size-sm);
    padding: var(--space-2xs);
    color: var(--color-text);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    /*border-radius: var(--radius-sm);*/
    transition: border-color var(--transition-fast);
    width: 90%;
}

.survey-form__input-upload {

}

.survey-form__input:focus {
    border-color: var(--color-text);
    outline: none;
}

.survey-form__input::placeholder {
    color: var(--color-text-light);
}

.survey-form__input-with_icon {
    display: flex;
}

.survey-form__input-with_icon img {
    width: var(--font-size-lg);
    height: var(--font-size-base);
    margin-top: var(--space-2xs);
    margin-right: var(--space-xs);
}

.survey-form__input--small {
    width: 200px;
    flex: none;
    background-color: var(--color-bg-gray);
}

.survey-form__field--inline .survey-form__input {
    flex: 1;
}

.survey-form__grid {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: auto auto;
    gap: var(--space-2xs) var(--space-xs);
    align-items: start;
    flex-direction: row;
    margin-bottom: var(--space-xs);
}

.survey-form__grid > .survey-form__label:first-child {
    grid-column: 1;
    grid-row: 1 / 3;
    white-space: nowrap;
    margin-top: var(--space-2xs);
}

.survey-form__grid > .survey-form__field:nth-of-type(1) {
    grid-column: 2;
    grid-row: 1;
    margin-top: var(--space-2xs);
}

.survey-form__grid > .survey-form__field:nth-of-type(2) {
    grid-column: 2;
    grid-row: 2;
}

/* === 11. Survey Form Groups === */
.survey-form__group {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
}

.survey-form__group .survey-form__label {
    margin-bottom: 0;
}

/* === 12. Checkbox & Radio Groups === */
.survey-form__checkbox-group,
.survey-form__radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-top: 0;
}

.survey-form__checkbox-group--inline {
    gap: var(--space-lg);
}

.survey-form__checkbox-group--documents {
    display: flex;
    gap: var(--space-sm);
}

.survey-form__checkbox,
.survey-form__radio {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
    font-size: var(--font-size-base);
    color: var(--color-text);
}

/* 隐藏原生input */
.survey-form__checkbox input,
.survey-form__radio input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    cursor: pointer;
}

/* 自定义复选框样式 - 正方形 */
.survey-form__checkbox-text,
.survey-form__radio-text {
    position: relative;
    padding-left: 24px;
}

.survey-form__checkbox-text::before,
.survey-form__radio-text::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    border: 1px solid var(--color-border);
    border-radius: 0;
    background-color: var(--color-white);
    transition: all var(--transition-fast);
}

/* 选中状态 - 正方形填充 */
.survey-form__checkbox input:checked + .survey-form__checkbox-text::before,
.survey-form__radio input:checked + .survey-form__radio-text::before {
    background-color: var(--color-text);
    border-color: var(--color-text);
}

/* 选中状态 - 对勾标记 */
.survey-form__checkbox input:checked + .survey-form__checkbox-text::after,
.survey-form__radio input:checked + .survey-form__radio-text::after {
    content: "";
    position: absolute;
    left: 5px;
    top: 50%;
    transform: translateY(-60%) rotate(45deg);
    width: 5px;
    height: 9px;
    border: solid var(--color-white);
    border-width: 0 2px 2px 0;
}

/* hover状态 */
.survey-form__checkbox:hover .survey-form__checkbox-text::before,
.survey-form__radio:hover .survey-form__radio-text::before {
    border-color: var(--color-text);
}

/* === 13. Survey Upload === */
.survey-form__upload {
    margin-top: var(--space-xs);
}

/* Rich Text Box Container */
.survey-form__field--rich-text {
    align-items: flex-start;
}

.survey-form__rich-text-box {
    flex: 1;
    min-height: 150px;
    border: 1px solid var(--color-border);
    border-radius: 0;
    background-color: var(--color-white);
    padding: 8px;
}

.survey-form__upload-wrapper {
    position: relative;
    display: inline-block;
}

.survey-form__upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    width: 80px;
    height: 80px;
    border: 1px solid var(--color-border);
    border-radius: 0;
    cursor: pointer;
    transition: border-color var(--transition-fast);
    background-color: rgb(245, 245, 245);
}

.survey-form__upload-area:hover {
    border-color: var(--color-text);
}

.survey-form__upload-icon {
    width: 35%;
}

.survey-form__upload-text {
    font-size: 15px;
    color: rgb(150, 150, 150);
}

/* Image Preview */
.survey-form__image-preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
}

.survey-form__image-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.survey-form__image-preview--active {
    display: block;
}

.survey-form__image-preview--active + .survey-form__upload-area {
    display: none;
}

/* === 14. Survey Table === */
.survey-table-wrapper {
    margin: var(--space-md) 0;
    overflow-x: auto;
}

.survey-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-base);
}

.survey-table th,
.survey-table td {
    padding: 0 12px;
    text-align: center;
    border: 1px solid var(--color-border);
}

.survey-table1 th,
.survey-table1 td {
    border: 5px solid var(--color-white);
}

.survey-table th {
    background-color: var(--color-bg-alt);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    white-space: nowrap;
    padding: 6px 12px;
}

.survey-table2 th {
    background-color: var(--color-white);
}

.survey-table2 td:nth-child(2),
.survey-table2 th:nth-child(2) {
    width: 40%;
}

.survey-table td {
    color: var(--color-text-secondary);
    font-weight: var(--font-weight-medium);
}

.survey-table1 td {
    background-color: var(--color-bg-alt);
}

.survey-table__note {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
    line-height: var(--line-height-loose);
}

/* Editable Table Inputs */
.survey-table--editable .survey-table__input {
    width: 100%;
    padding: 6px 8px;
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    text-align: left;
    transition: border-color var(--transition-fast);
}

.survey-table--editable .survey-table__input:hover,
.survey-table--editable .survey-table__input:focus {
    border-color: var(--color-border);
    outline: none;
}

.survey-table--editable .survey-table__input::placeholder {
    color: var(--color-text-light);
}

/* === 15. Survey Form Footer === */
.survey-form__footer {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-bg-dark);
}

.survey-form__footer-fields {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.survey-form__footer-fields .survey-form__field--inline {
    flex: 0 0 auto;
    min-width: auto;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.survey-form__footer-fields .survey-form__field--inline .survey-form__input {
    width: 150px;
    flex: none;
}

.survey-form__submit-btn {
    align-self: flex-end;
    transition: all var(--transition-fast);
}

/* === 16. Document Uploads Section === */
.survey-document-uploads {
    margin-top: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.survey-document-upload {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 0;
    animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.survey-document-upload__label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    color: var(--color-text);
    min-width: 100px;
    flex-shrink: 0;
}

.survey-document-upload__area {
    flex: 1;
    position: relative;
}

.survey-document-upload__input-box {
    position: relative;
    width: 100%;
}

.survey-document-upload__input {
    width: 100%;
    padding: 10px 12px;
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 0;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.survey-document-upload__file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* === 17. Survey Footer === */
.survey-footer {
    margin-top: 0;
}

/* ============================================
   Mobile Styles - About Page
   ============================================ */
@media (max-width: 768px) {
    /* Survey Layout Mobile */
    .survey-layout {
        padding: var(--space-md) 0 var(--space-xl);
    }

    .survey-steps__item {
        min-width: 100%;
    }

    .survey-form__header {
        flex-direction: column;
        gap: var(--space-sm);
        align-items: flex-start;
    }

    .survey-form__meta {
        flex-direction: column;
        gap: var(--space-sm);
        width: 100%;
    }

    .survey-form__field--inline {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .survey-form__input--small {
        width: 100%;
    }

    .survey-form__row--2col,
    .survey-form__row--3col {
        grid-template-columns: 1fr;
    }

    .survey-form__checkbox-group--inline {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .survey-form__checkbox-group--documents {
        grid-template-columns: 1fr;
    }

    .survey-form__footer-fields {
        flex-direction: column;
    }

    .survey-form__footer-fields .survey-form__field--inline {
        min-width: 100%;
    }

    .survey-form__submit-btn {
        align-self: stretch;
        width: 100%;
    }

    .survey-table {
        font-size: 12px;
    }

    .survey-table th,
    .survey-table td {
        padding: 6px 8px;
    }
}