/*
 * 听力练习页面样式
 * 包含：
 * - 整体布局（左右两栏：左配置+列表，右答案区域）
 * - 控制面板与列表外观
 * - 本轮答案卡片与答案播放按钮
 * - 列表项详情弹窗 & JSON 导入弹窗
 */

.portal-listening-practice-card {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.portal-listening-practice__control-row--actions {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.portal-listening-practice__control-row--actions .portal-listening-practice__start-btn {
    width: auto;
    flex: 1 1 0;
}

.portal-listening-practice__header {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.portal-listening-practice__title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: #f9fafb;
}

.portal-listening-practice__subtitle {
    margin: 0;
    font-size: 13px;
    color: #9ca3af;
}

.portal-listening-practice__body {
    margin-top: 16px;
    display: grid;
    grid-template-columns: minmax(260px, 0.9fr) minmax(0, 2.3fr);
    gap: 14px;
    min-height: 0;
    flex: 1 1 auto;
}

.portal-listening-practice__list-panel {
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    background: radial-gradient(circle at top left, rgba(15,23,42,0.98) 0, rgba(15,23,42,0.95) 55%, rgba(15,23,42,0.93) 100%);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.7);
    padding: 10px 10px 8px;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.portal-listening-practice__list-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 6px;
}

.portal-listening-practice__list-title {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    color: #e5e7eb;
}

.portal-listening-practice__filters {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
}

.portal-listening-practice__control-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    width: 100%;
}

.portal-listening-practice__control-row--top {
    justify-content: stretch;
    gap: 8px;
}

.portal-listening-practice__control-row--top .portal-listening-practice__start-btn {
    width: auto;
    flex: 1 1 0;
}

.portal-listening-practice__control-row--voice {
    justify-content: flex-start;
}

.portal-listening-practice__control-row--triple {
    display: flex;
    align-items: stretch;
    gap: 6px;
}

.portal-listening-practice__control-group {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    column-gap: 8px;
    align-items: center;
    font-size: 13px;
    color: #e5e7eb;
    width: 100%;
}

.portal-listening-practice__control-row--triple .portal-listening-practice__control-group {
    width: auto;
    flex: 1 1 0;
    grid-template-columns: 56px minmax(0, 1fr);
}

.portal-listening-practice__control-row--triple .portal-listening-practice__control-group:nth-child(1),
.portal-listening-practice__control-row--triple .portal-listening-practice__control-group:nth-child(2) {
    flex: 1 1 0;
}

.portal-listening-practice__control-row--triple .portal-listening-practice__control-group:nth-child(3) {
    flex: 0 0 auto;
    grid-template-columns: auto auto;
}

.portal-listening-practice__control-row--triple .portal-listening-practice__control-input {
    min-width: 40px;
    padding: 4px 8px;
    font-size: 12px;
}

.portal-listening-practice__control-group > span:first-child {
    text-align: right;
    white-space: nowrap;
}

.portal-listening-practice__control-input {
    padding: 6px 10px;
    border-radius: 9999px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15,23,42,0.95);
    color: #e5e7eb;
    font-size: 13px;
    outline: none;
    min-width: 130px;
}

.portal-listening-practice__control-input:focus {
    border-color: rgba(56, 189, 248, 0.9);
}

.portal-listening-practice__checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.portal-listening-practice__voice-select {
    width: 100%;
    max-width: 100%;
    padding: 6px 10px;
    border-radius: 8px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15, 23, 42, 0.95);
    color: #e5e7eb;
    font-size: 13px;
    box-sizing: border-box;
}

.portal-listening-practice__search {
    position: relative;
}

.portal-listening-practice__search-input {
    padding: 5px 8px;
    border-radius: 9999px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15,23,42,0.95);
    color: #e5e7eb;
    font-size: 12px;
    outline: none;
}

.portal-listening-practice__search-input::placeholder {
    color: #6b7280;
}

.portal-listening-practice__search-input:focus {
    border-color: rgba(56, 189, 248, 0.9);
    box-shadow: 0 0 0 1px rgba(15,23,42,0.9);
}

.portal-listening-practice__list-wrapper {
    margin-top: 4px;
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
}

.portal-listening-practice__list-collapse {
    margin-top: 4px;
    display: flex;
    justify-content: flex-end;
}

.portal-listening-practice__list-collapse-btn {
    padding: 2px 8px;
    border-radius: 9999px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15,23,42,0.95);
    color: #e5e7eb;
    cursor: pointer;
}

.portal-listening-practice__list-filter-error-btn {
    margin-right: 6px;
}

.portal-listening-practice__list-collapse-icon {
    font-size: 13px;
}

.portal-listening-practice__list-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 4px 2px 6px;
    font-size: 12px;
    color: #9ca3af;
}

.portal-listening-practice__list-toolbar-left,
.portal-listening-practice__list-toolbar-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

.portal-listening-practice__list-toolbar-right {
    justify-content: flex-end;
    flex-wrap: wrap;
}

.portal-listening-practice__list-toolbar-btn {
    padding: 2px 8px;
    border-radius: 9999px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15,23,42,0.95);
    color: #e5e7eb;
    font-size: 11px;
    cursor: pointer;
}

.portal-listening-practice__list-toolbar-btn:disabled {
    opacity: 0.4;
    cursor: default;
}

.portal-listening-practice__list-toolbar-page {
    font-size: 11px;
    color: #9ca3af;
}

.portal-listening-practice__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.portal-listening-practice__item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 8px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
    border: 1px solid transparent;
}

.portal-listening-practice__item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(148, 163, 184, 0.5);
    box-shadow: 0 5px 14px rgba(0, 0, 0, 0.7);
}

.portal-listening-practice__item--active {
    background: rgba(37, 99, 235, 0.18);
    border-color: rgba(59, 130, 246, 0.85);
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.6);
}

.portal-listening-practice__item--has-error {
    border-color: rgba(248, 113, 113, 0.9);
}

.portal-listening-practice__item-main {
    flex: 1 1 auto;
    min-width: 0;
}

.portal-listening-practice__item-line {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
    width: 100%;
}

.portal-listening-practice__item-meta-text {
    font-size: 11px;
    color: #9ca3af;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.portal-listening-practice__item-error {
    font-size: 11px;
    color: #fca5a5;
    white-space: nowrap;
}

.portal-listening-practice__item-title {
    margin: 0 0 2px;
    font-size: 13px;
    color: #e5e7eb;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.portal-listening-practice__item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 11px;
    color: #9ca3af;
}

.portal-listening-practice__badge {
    padding: 2px 6px;
    border-radius: 9999px;
    border: 1px solid rgba(148, 163, 184, 0.7);
}

.portal-listening-practice__badge--difficulty {
    border-color: rgba(96, 165, 250, 0.9);
    color: #bfdbfe;
}

.portal-listening-practice__badge--audio {
    border-color: rgba(52, 211, 153, 0.9);
    color: #a7f3d0;
}

.portal-listening-practice__badge--tag {
    border-color: rgba(148, 163, 184, 0.8);
}

.portal-listening-practice__item-stat {
    flex: 0 0 auto;
    font-size: 11px;
    color: #9ca3af;
    text-align: right;
}

.portal-listening-practice__empty {
    padding: 18px 8px;
    font-size: 13px;
    color: #9ca3af;
    text-align: center;
}

.portal-listening-practice__detail-panel {
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    background: radial-gradient(circle at top right, rgba(15,23,42,0.98) 0, rgba(15,23,42,0.95) 55%, rgba(15,23,42,0.93) 100%);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.7);
    padding: 12px 12px 10px;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.portal-listening-practice__detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 6px;
}

.portal-listening-practice__detail-title {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: #f9fafb;
}

.portal-listening-practice__detail-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 11px;
    color: #9ca3af;
}

.portal-listening-practice__detail-body {
    margin-top: 6px;
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    font-size: 13px;
    color: #e5e7eb;
}

.portal-listening-practice__detail-desc {
    margin: 0;
    line-height: 1.7;
}

.portal-listening-practice__detail-footer {
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}

.portal-listening-practice__start-btn {
    padding: 8px 18px;
    border-radius: 9999px;
    border: none;
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    color: #0f172a;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(56, 189, 248, 0.45);
    transition: transform 0.08s ease, box-shadow 0.08s ease, filter 0.12s ease;
    width: 100%;
    text-align: center;
}

.portal-listening-practice__start-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px rgba(56, 189, 248, 0.6);
    filter: brightness(1.05);
}

.portal-listening-practice__start-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.5);
}

.portal-listening-practice__status {
    font-size: 12px;
    color: #9ca3af;
}

.portal-listening-practice__answers {
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* 右侧答案区域滚动条美化（仅作用于听力练习模块内部） */
.portal-listening-practice__detail-body,
.portal-listening-practice__answers {
    scrollbar-width: thin;              /* Firefox */
    scrollbar-color: #4b5563 transparent;
}

.portal-listening-practice__detail-body::-webkit-scrollbar,
.portal-listening-practice__answers::-webkit-scrollbar {
    width: 8px;
}

.portal-listening-practice__detail-body::-webkit-scrollbar-track,
.portal-listening-practice__answers::-webkit-scrollbar-track {
    background: transparent;
}

.portal-listening-practice__detail-body::-webkit-scrollbar-thumb,
.portal-listening-practice__answers::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, rgba(55, 65, 81, 0.9), rgba(31, 41, 55, 0.9));
    border-radius: 9999px;
}

.portal-listening-practice__detail-body::-webkit-scrollbar-thumb:hover,
.portal-listening-practice__answers::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, rgba(75, 85, 99, 0.95), rgba(31, 41, 55, 0.95));
}

.portal-listening-practice__answer-row {
    border-radius: 14px;
    border: 1px solid rgba(148, 163, 184, 0.45);
    background: radial-gradient(circle at top right, rgba(15,23,42,0.99) 0, rgba(15,23,42,0.97) 55%, rgba(15,23,42,0.95) 100%);
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.75);
    padding: 10px 14px 12px;
}

.portal-listening-practice__answer-header {
    font-size: 13px;
    font-weight: 500;
    color: #9ca3af;
    margin-bottom: 6px;
}

.portal-listening-practice__answer-main {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.portal-listening-practice__answer-scripts {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 10px 10px;
    border-radius: 12px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15, 23, 42, 0.98);
}

.portal-listening-practice__answer-col-wrap {
    position: relative;
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.portal-listening-practice__answer-col {
    font-size: 18px;
    line-height: 1.8;
    color: #e5e7eb;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
}

.portal-listening-practice__answer-col--right {
    letter-spacing: 0.08em;
}

.portal-listening-practice__answer-play-btn {
    position: absolute;
    top: 4px;
    right: 6px;
    width: 22px;
    height: 22px;
    border-radius: 9999px;
    border: none;
    background: rgba(37, 99, 235, 0.95);
    color: #e5e7eb;
    font-size: 12px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.65);
}

.portal-listening-practice__answer-play-btn:hover {
    filter: brightness(1.05);
}

.portal-listening-practice__answer-play-btn:active {
    transform: translateY(1px);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.6);
}

.portal-listening-practice__answer-divider {
    width: 1px;
    align-self: stretch;
    background: rgba(156, 163, 175, 0.6);
}

.portal-listening-practice__answer-expl {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    font-size: 13px;
    line-height: 1.7;
    color: #d1d5db;
}

.portal-listening-practice__answer-expl-main {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1 1 auto;
    min-width: 0;
}

.portal-listening-practice__answer-expl-label {
    flex: 0 0 auto;
    padding: 1px 6px;
    border-radius: 9999px;
    background: rgba(31, 41, 55, 0.9);
    color: #e5e7eb;
    font-size: 11px;
}

.portal-listening-practice__answer-expl-text {
    flex: 1 1 auto;
}

.portal-listening-practice__answer-error-row {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    font-size: 12px;
    color: #9ca3af;
}

.portal-listening-practice__answer-error-btn {
    padding: 4px 10px;
    border-radius: 9999px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15, 23, 42, 0.96);
    color: #e5e7eb;
    font-size: 12px;
    cursor: pointer;
}

.portal-listening-practice__answer-error-btn:hover {
    filter: brightness(1.05);
}

.portal-listening-practice__answer-error-btn:active {
    transform: translateY(1px);
}

.portal-listening-practice__answer-error-btn--plus {
    border-color: rgba(56, 189, 248, 0.8);
}

.portal-listening-practice__answer-error-btn--minus {
    border-color: rgba(248, 113, 113, 0.85);
    color: #fecaca;
}

/* 列表项详情弹窗 */

.portal-listening-practice__item-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2100;
}

.portal-listening-practice__item-modal {
    width: 100%;
    max-width: 640px;
    max-height: 90vh;
    background: radial-gradient(circle at top left, rgba(15,23,42,0.98) 0, rgba(15,23,42,0.97) 40%, rgba(15,23,42,0.95) 100%);
    border-radius: 16px;
    border: 1px solid rgba(148, 163, 184, 0.6);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.85);
    padding: 16px 18px 14px;
    display: flex;
    flex-direction: column;
    color: #e5e7eb;
}

.portal-listening-practice__item-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 10px;
}

.portal-listening-practice__item-modal-title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: #f9fafb;
}

.portal-listening-practice__item-modal-close {
    border: none;
    background: transparent;
    color: #9ca3af;
    font-size: 18px;
    cursor: pointer;
}

.portal-listening-practice__item-modal-body {
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
}

.portal-listening-practice__item-modal-section {
    margin-top: 8px;
}

.portal-listening-practice__item-modal-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 4px;
}

.portal-listening-practice__item-modal-label {
    font-size: 13px;
    color: #9ca3af;
    margin-bottom: 4px;
}

.portal-listening-practice__item-modal-content {
    font-size: 16px;
    line-height: 1.8;
    color: #e5e7eb;
    padding: 8px 10px;
    border-radius: 10px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15,23,42,0.97);
    word-break: break-word;
}

.portal-listening-practice__item-modal-play {
    flex: 0 0 auto;
    width: 26px;
    height: 26px;
    border-radius: 9999px;
    border: none;
    background: rgba(37, 99, 235, 0.95);
    color: #e5e7eb;
    font-size: 13px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.65);
}

.portal-listening-practice__item-modal-play:hover {
    filter: brightness(1.06);
}

.portal-listening-practice__item-modal-play:active {
    transform: translateY(1px);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.6);
}

/* JSON 导入弹窗 */

.portal-listening-practice__modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.portal-listening-practice__modal {
    width: 100%;
    max-width: 720px;
    max-height: 90vh;
    background: radial-gradient(circle at top left, rgba(15,23,42,0.98) 0, rgba(15,23,42,0.97) 40%, rgba(15,23,42,0.95) 100%);
    border-radius: 16px;
    border: 1px solid rgba(148, 163, 184, 0.6);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.85);
    padding: 16px 18px 14px;
    display: flex;
    flex-direction: column;
    color: #e5e7eb;
}

.portal-listening-practice__modal-header {
    margin-bottom: 10px;
}

.portal-listening-practice__modal-title {
    margin: 0 0 4px;
    font-size: 16px;
    font-weight: 600;
    color: #f9fafb;
}

.portal-listening-practice__modal-subtitle {
    margin: 0;
    font-size: 13px;
    color: #9ca3af;
}

.portal-listening-practice__modal-section {
    margin-top: 8px;
}

.portal-listening-practice__modal-label {
    font-size: 13px;
    color: #e5e7eb;
    margin-bottom: 4px;
}

.portal-listening-practice__modal-textarea {
    width: 100%;
    min-height: 90px;
    max-height: 220px;
    padding: 8px 10px;
    border-radius: 10px;
    border: 1px solid rgba(55, 65, 81, 0.9);
    background: rgba(15, 23, 42, 0.97);
    color: #e5e7eb;
    font-size: 13px;
    resize: vertical;
    box-sizing: border-box;
}

.portal-listening-practice__modal-textarea--prompt {
    min-height: 80px;
    max-height: 160px;
}

.portal-listening-practice__modal-actions-row {
    margin-top: 6px;
    display: flex;
    justify-content: flex-end;
}

.portal-listening-practice__modal-file {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    font-size: 13px;
    color: #e5e7eb;
}

.portal-listening-practice__modal-file input[type="file"] {
    font-size: 12px;
    color: #e5e7eb;
}

.portal-listening-practice__modal-footer {
    margin-top: 10px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.portal-listening-practice__modal-status {
    font-size: 12px;
    color: #9ca3af;
}

.portal-listening-practice__modal-status--success {
    color: #6ee7b7;
}

.portal-listening-practice__modal-status--error {
    color: #fca5a5;
}

.portal-listening-practice__modal-status--warning {
    color: #fbbf24;
}

.portal-listening-practice__modal-actions {
    display: flex;
    gap: 8px;
}

.portal-listening-practice__modal-btn {
    padding: 6px 14px;
    border-radius: 9999px;
    border: 1px solid transparent;
    font-size: 13px;
    cursor: pointer;
    background: rgba(15, 23, 42, 0.9);
    color: #e5e7eb;
}

.portal-listening-practice__modal-btn--primary {
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    color: #0f172a;
    box-shadow: 0 6px 16px rgba(56, 189, 248, 0.45);
}

.portal-listening-practice__modal-btn--secondary {
    border-color: rgba(148, 163, 184, 0.7);
}

@media (max-width: 960px) {
    .portal-listening-practice__body {
        grid-template-columns: 1fr;
    }

    /* 小屏下列表行内容允许换行，避免横向溢出 */
    .portal-listening-practice__item-line {
        flex-wrap: wrap;
    }

    .portal-listening-practice__item-meta-text,
    .portal-listening-practice__item-error {
        flex-basis: 100%;
    }
}