/* 题目答题弹窗与题型展示的通用样式（学生端）
 * 说明：
 * - 供题库、错题本等页面复用；
 * - 仅包含弹窗壳子 .portal-answer-modal 及题型相关展示样式；
 * - 基础配色依赖主题变量 (--um-*)。*/

/* ========== 通用答题弹窗壳子 ========== */

.portal-answer-modal {
    position: fixed;
    inset: 0;
    z-index: 1400;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: auto;
}

.portal-answer-modal__backdrop {
    position: absolute;
    inset: 0;
    background: var(--um-bg-secondary);
}

.portal-answer-modal__panel {
    position: relative;
    max-width: 880px;
    width: 90%;
    max-height: 90vh;
    background: var(--um-bg-panel);
    border-radius: 16px;
    border: 1px solid var(--um-accent);
    box-shadow: var(--um-shadow);
    display: flex;
    flex-direction: column;
    padding: 14px 18px 12px;
    z-index: 1;
    box-sizing: border-box;
}

.portal-answer-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}

.portal-answer-modal__title {
    font-size: 16px;
    font-weight: 600;
    color: var(--um-text-primary);
    margin: 0;
}

.portal-answer-modal__close {
    border: none;
    background: transparent;
    color: var(--um-text-secondary);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
}

.portal-answer-modal__body {
    flex: 1 1 auto;
    overflow: auto;
    padding-right: 4px;
    font-size: 13px;
    color: var(--um-text-primary);
}

.portal-answer-modal__footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 10px;
}

.portal-answer-modal__btn {
    border-radius: 9999px;
    border: 1px solid var(--um-border);
    background: transparent;
    color: var(--um-text-primary);
    font-size: 12px;
    padding: 5px 14px;
    cursor: pointer;
}

.portal-answer-modal__btn--primary {
    border-color: var(--um-accent);
    background: linear-gradient(90deg, var(--um-accent), var(--um-accent-hover));
    color: var(--um-text-on-accent);
}

.portal-answer-modal__question-text {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 10px;
}

.portal-answer-modal__options {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.portal-answer-option {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 10px;
    border: 1px solid var(--um-border);
    background: var(--um-bg-secondary);
    cursor: pointer;
}

.portal-answer-option input[type="radio"],
.portal-answer-option input[type="checkbox"] {
    margin-top: 4px;
}

.portal-answer-option__text {
    font-size: 13px;
}

.portal-answer-option.is-selected {
    box-shadow: 0 0 0 1px var(--um-accent);
}

.portal-answer-option.is-correct {
    border-color: var(--um-success);
    background: var(--um-bg-secondary);
}

.portal-answer-option.is-wrong {
    border-color: var(--um-danger);
    background: var(--um-bg-secondary);
}

.portal-answer-modal__feedback {
    margin-top: 10px;
    font-size: 13px;
    padding: 6px 8px;
    border-radius: 8px;
    background: var(--um-bg-secondary);
    border: 1px solid transparent;
}

.portal-answer-modal__feedback--success {
    border-color: var(--um-success);
    color: var(--um-success);
}

.portal-answer-modal__feedback--error {
    border-color: var(--um-danger);
    color: var(--um-danger);
}

.portal-answer-modal__feedback--warning {
    border-color: var(--admin-warning-color);
    color: var(--admin-warning-color);
}

/* ========== 问题详情面板（解析区块）通用样式 ========== */

.portal-question-detail {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
}

.portal-question-detail__row {
    display: flex;
    gap: 6px;
}

.portal-question-detail__label {
    width: 80px;
    flex: 0 0 auto;
    color: var(--um-text-secondary);
}

.portal-question-detail__value {
    flex: 1 1 auto;
    color: var(--um-text-primary);
}

.portal-question-detail__analysis {
    margin-top: 8px;
    padding: 8px 10px;
    border-radius: 10px;
    background: var(--um-bg-secondary);
    border: 1px solid var(--um-accent);
}

.portal-question-detail__analysis-title {
    font-size: 13px;
    font-weight: 600;
    margin: 0 0 4px;
}

.portal-question-detail__analysis-content {
    font-size: 13px;
    color: var(--um-text-primary);
}

/* ========== 连线题答题展示（通用） ========== */

.portal-matching {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.portal-matching__stem {
    font-size: 14px;
    line-height: 1.6;
}

.portal-matching__columns {
    position: relative;
    display: flex;
    gap: 12px;
    overflow-x: auto;
}

.portal-matching__column {
    background: var(--um-bg-panel);
    border-radius: 10px;
    border: 1px solid var(--um-border);
    padding: 8px 8px 10px;
    flex: 1 1 220px;
    min-width: 220px;
}

.portal-matching__column-header {
    font-size: 13px;
    font-weight: 600;
    color: var(--um-text-primary);
    margin-bottom: 6px;
}

.portal-matching__column-body {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.portal-matching__item {
    position: relative;
    padding: 6px 8px;
    border-radius: 8px;
    border: 1px solid var(--um-border);
    background: var(--um-bg-secondary);
    cursor: pointer;
    transition: border-color 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

.portal-matching__item-content {
    font-size: 13px;
    line-height: 1.5;
}

.portal-matching__item-content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 4px 0;
}

.portal-matching__item--selected {
    border-color: var(--um-accent);
    box-shadow: 0 0 0 1px var(--um-accent);
}

.portal-matching__item--linked {
    background: var(--um-bg-panel);
}

.portal-matching__item--correct {
    border-color: var(--um-success);
    background: var(--um-bg-panel);
}

.portal-matching__item--wrong {
    border-color: var(--um-danger);
    background: var(--um-bg-panel);
}

.portal-matching__hint {
    font-size: 12px;
    color: var(--um-text-secondary);
    margin: 0;
}

.portal-matching__lines {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.portal-matching__line {
    stroke-width: 2.5;
}

.portal-matching__line-user {
    stroke: var(--um-accent);
}

.portal-matching__line-correct {
    stroke: var(--um-success);
}

.portal-matching__line-correct-missing {
    stroke: var(--um-success);
}

.portal-matching__line-wrong {
    stroke: var(--um-danger);
}

/* ========== 填空题答题展示（通用） ========== */

.portal-answer-modal .portal-fillblank-question {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.portal-answer-modal .portal-fillblank-meta {
    font-size: 12px;
    color: var(--um-text-secondary);
}

.portal-answer-modal .portal-fillblank-slot {
    display: inline-flex;
    align-items: baseline;
    border-bottom: 1px solid var(--um-border);
    padding: 0 2px 1px;
    margin: 0 3px;
    background: var(--um-bg-secondary);
    border-radius: 2px;
    box-sizing: border-box;
    max-width: 20ch;
}

.portal-answer-modal .portal-fillblank-slot__label {
    font-size: 11px;
    color: var(--um-text-secondary);
    margin-right: 3px;
    flex-shrink: 0;
}

.portal-answer-modal .portal-fillblank-slot__input {
    border: none;
    outline: none;
    background: transparent;
    color: var(--um-text-primary);
    font-size: 13px;
    line-height: 1.6;
    padding: 0;
    margin: 0;
    min-width: 0;
}

.portal-answer-modal .portal-fillblank-slot__input::placeholder {
    color: var(--um-text-secondary);
}

.portal-answer-modal .portal-fillblank-slot:focus-within {
    border-bottom-color: var(--um-accent);
    box-shadow: 0 1px 0 var(--um-accent);
}

.portal-answer-modal .portal-fillblank-slot--correct {
    border-bottom-color: rgba(34, 197, 94, 0.95);
    background: rgba(22, 163, 74, 0.16);
}

.portal-answer-modal .portal-fillblank-slot--wrong {
    border-bottom-color: rgba(239, 68, 68, 0.95);
    background: rgba(220, 38, 38, 0.12);
}

/* 填空题题干预览：仿照管理端 .um-preview-box 的规则，让图片/表格与文字、填空自然内联显示 */
.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text > * {
    display: inline;
}

.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text p {
    display: block;
    margin: 0 0 8px 0;
}

.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text br {
    display: block;
    content: "";
    margin: 0;
}

.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text span,
.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text strong,
.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text em,
.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text u,
.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text b,
.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text i {
    display: inline;
}

.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text img {
    display: inline-block;
    max-width: 200px;
    height: auto;
    margin: 0 4px;
    vertical-align: middle;
}

.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text table {
    display: inline-table;
    border-collapse: collapse;
    margin: 0 4px;
    vertical-align: middle;
}

.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text ul,
.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text ol {
    display: inline;
    margin: 0;
    padding: 0;
    list-style: none;
}

.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text li {
    display: inline;
}

.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text li:before {
    content: "\2022 ";
    margin: 0 4px;
}

.portal-answer-modal .portal-fillblank-question .portal-answer-modal__question-text li + li:before {
    content: " \2022 ";
}