/* 全局样式 */
/* 覆盖 reset.css 的影响 */
html, body {
    width: auto !important;
    height: auto !important;
    margin: 0;
    padding: 0;
    overflow: auto;
}

/* 确保 Ant Design 组件样式正常 */
.ant-picker, .ant-picker-dropdown {
    box-sizing: border-box;
}

.ant-picker-dropdown {
    z-index: 1050;
}

:root {
    --primary-color: #1a73e8;
    --secondary-color: #f8f9fa;
    --accent-color: #4285f4;
    --text-color: #202124;
    --text-secondary: #5f6368;
    --success-color: #34a853;
    --warning-color: #fbbc05;
    --danger-color: #ea4335;
    --light-gray: #dadce0;
    --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --header-height: 80px;
    --border-radius: 10px;
    --transition-speed: 0.3s;
    --card-bg: white;
    --body-bg: #f5f7fa;
    --window-border-radius: 10px;
    --window-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* 暗色模式变量 */
.dark-mode {
    --primary-color: #8ab4f8;
    --secondary-color: #303134;
    --accent-color: #8ab4f8;
    --text-color: #e8eaed;
    --text-secondary: #9aa0a6;
    --light-gray: #3c4043;
    --card-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    --card-bg: #202124;
    --body-bg: #171717;
    --window-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background-color: var(--body-bg) !important;
    color: var(--text-color) !important;
    line-height: 1.6 !important;
    transition: background-color var(--transition-speed) !important;
    padding: 20px !important;
    min-height: 100vh !important;
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* macOS 风格窗口容器 */
.app-container {
    width: 95% !important;
    max-width: 1400px !important;
    min-height: 90vh !important;
    height: auto !important;
    background-color: var(--card-bg);
    border-radius: var(--window-border-radius);
    box-shadow: var(--window-shadow);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    box-sizing: border-box !important;
}

/* 窗口顶栏 */
.window-titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--light-gray);
    border-top-left-radius: var(--window-border-radius);
    border-top-right-radius: var(--window-border-radius);
}

.window-controls {
    display: flex;
    gap: 8px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.control:hover {
    transform: scale(1.2);
}

.control.close {
    background-color: #ff5f56;
}

.control.minimize {
    background-color: #ffbd2e;
}

.control.maximize {
    background-color: #27c93f;
}

.control.close:hover {
    background-color: #ff3b30;
}

.control.minimize:hover {
    background-color: #ffcc00;
}

.control.maximize:hover {
    background-color: #28cd41;
}

.window-title {
    display: flex;
    align-items: center;
}

.logo {
    width: 24px;
    height: 24px;
    margin-right: 10px;
}

.window-title h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

.window-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 15px;
}

.theme-toggle {
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--warning-color);
    display: none;
}

.dark-mode .theme-toggle {
    color: #9aa0a6;
}

/* 顶部导航 */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--secondary-color);
    padding: 8px 20px;
    border-bottom: 1px solid var(--light-gray);
}

.main-nav ul {
    display: flex;
    gap: 5px;
}

.nav-item {
    border-radius: 6px;
    transition: background-color var(--transition-speed);
}

.nav-item a {
    display: flex;
    align-items: center;
    padding: 8px 15px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    transition: color var(--transition-speed);
}

.nav-item a i {
    margin-right: 8px;
    font-size: 0.9rem;
}

.nav-item:hover {
    background-color: rgba(26, 115, 232, 0.08);
}

.dark-mode .nav-item:hover {
    background-color: rgba(138, 180, 248, 0.08);
}

.nav-item:hover a {
    color: var(--primary-color);
}

.nav-item.active {
    background-color: var(--primary-color);
}

.dark-mode .nav-item.active {
    background-color: var(--primary-color);
}

.nav-item.active a {
    color: white;
    font-weight: 600;
}

.search-box {
    display: flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.8);
    border-radius: 20px;
    padding: 6px 15px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: background-color var(--transition-speed);
    width: 220px;
}

.dark-mode .search-box {
    background-color: rgba(60, 64, 67, 0.8);
}

.search-box i {
    color: var(--text-secondary);
    margin-right: 8px;
    font-size: 0.9rem;
}

.search-box input {
    border: none;
    outline: none;
    width: 100%;
    font-size: 0.9rem;
    background-color: transparent;
    color: var(--text-color);
}

/* 主内容区样式 */
.main-content {
    flex: 1 !important;
    padding: 20px !important;
    overflow-y: auto !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 20px !important;
    margin-top: 10px !important;
    width: auto !important;
    height: auto !important;
    box-sizing: border-box !important;
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--light-gray);
}

.header-left h1 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-color);
    display: flex;
    align-items: center;
}

.subtitle {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-left: 15px;
    padding-left: 15px;
    border-left: 2px solid var(--light-gray);
}

.header-right {
    display: flex;
    align-items: center;
}

.notifications {
    position: relative;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background-color: var(--danger-color);
    color: white;
    font-size: 0.7rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 统计卡片样式 */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--card-shadow);
    transition: background-color var(--transition-speed);
    border: 1px solid var(--light-gray);
}

.stat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.stat-header h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.more-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
}

.stat-body {
    display: flex;
    align-items: baseline;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    margin-right: 10px;
}

.stat-badge {
    padding: 4px 8px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.stat-badge.success {
    background-color: rgba(52, 168, 83, 0.1);
    color: var(--success-color);
}

.dark-mode .stat-badge.success {
    background-color: rgba(52, 168, 83, 0.2);
}

.stat-badge.danger {
    background-color: rgba(234, 67, 53, 0.1);
    color: var(--danger-color);
}

.dark-mode .stat-badge.danger {
    background-color: rgba(234, 67, 53, 0.2);
}

/* 排行榜区域样式 */
.leaderboard-section {
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-bottom: 0;
    min-height: calc(100vh - 100px);
    padding: 20px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--light-gray);
}

.section-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-color);
}

.date-picker {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    transition: all 0.3s ease;
}

.date-range {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

/* Ant Design 组件样式调整 */
.ant-picker {
    background-color: var(--bg-secondary) !important;
    border-color: var(--border-color) !important;
    color: var(--text-color) !important;
}

.ant-picker-input > input {
    color: var(--text-color) !important;
}

.ant-picker-suffix {
    color: var(--text-secondary) !important;
}

.ant-picker-clear {
    background-color: var(--bg-secondary) !important;
}

.ant-picker-dropdown {
    background-color: var(--bg-secondary) !important;
    border-color: var(--border-color) !important;
}

.ant-picker-cell-in-view {
    color: var(--text-color) !important;
}

.ant-picker-cell:hover:not(.ant-picker-cell-selected):not(.ant-picker-cell-range-start):not(.ant-picker-cell-range-end):not(.ant-picker-cell-range-hover-start):not(.ant-picker-cell-range-hover-end) .ant-picker-cell-inner {
    background-color: var(--hover-color) !important;
}

.ant-picker-cell-in-range > .ant-picker-cell-inner {
    background-color: var(--primary-color-light) !important;
}

.ant-picker-cell-range-start .ant-picker-cell-inner,
.ant-picker-cell-range-end .ant-picker-cell-inner,
.ant-picker-cell-selected .ant-picker-cell-inner {
    background-color: var(--primary-color) !important;
}

.date-label, .date-input {
    transition: all 0.3s ease;
}

.date-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.date-input {
    padding: 8px 12px;
    border: 1px solid var(--light-gray);
    border-radius: 5px;
    font-size: 0.9rem;
    outline: none;
    background-color: var(--card-bg);
    color: var(--text-color);
    transition: all var(--transition-speed);
    width: 160px;
}

.date-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

.date-input:hover {
    border-color: var(--primary-color);
}

.date-input.highlight {
    animation: pulse 1.5s ease-in-out;
}

.export-data-btn {
    display: flex;
    align-items: center;
    background-color: var(--success-color);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 8px 15px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color var(--transition-speed);
    margin-left: 10px;
}

.export-data-btn:hover {
    background-color: #2d9448;
}

.export-data-btn i {
    margin-right: 8px;
}

.actions-group {
    display: flex;
    gap: 10px;
    margin-left: auto;
    transition: all 0.3s ease;
}

.refresh-btn {
    display: flex;
    align-items: center;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 8px 15px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.refresh-btn:hover {
    background-color: #0d5bbc;
}

.refresh-btn.loading {
    background-color: #6c757d;
    cursor: not-allowed;
    opacity: 0.8;
}

.refresh-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.dark-mode .refresh-btn:hover {
    background-color: #6da5f7;
}

.refresh-btn i {
    margin-right: 8px;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0.4); }
    70% { box-shadow: 0 0 0 5px rgba(26, 115, 232, 0); }
    100% { box-shadow: 0 0 0 0 rgba(26, 115, 232, 0); }
}

/* 导出进度覆盖层 */
.export-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    color: white;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.export-overlay.active {
    opacity: 1;
    visibility: visible;
}

.export-progress {
    width: 80%;
    max-width: 400px;
    height: 8px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    margin: 20px 0;
    overflow: hidden;
}

.export-progress-bar {
    height: 100%;
    background-color: var(--success-color);
    width: 0%;
    transition: width 0.3s;
}

.export-message {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.export-details {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

/* 标签页样式 */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--light-gray);
    margin-bottom: 20px;
}

.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: color var(--transition-speed);
}

.tab-btn:hover {
    color: var(--primary-color);
}

.tab-btn.active {
    color: var(--primary-color);
    font-weight: 600;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
}

.tab-content {
    position: relative;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* 排行榜表格样式 */
.leaderboard-container {
    width: 100%;
    border-radius: 8px;
    overflow: hidden;
}

/* 题包学习排行榜特有样式 */
#learningLeaderboard .leaderboard-row {
    grid-template-columns: 0.5fr 1fr 1fr 1fr 1.5fr 0.8fr 0.8fr;
}

#learningTab .leaderboard-header {
    grid-template-columns: 0.5fr 1fr 1fr 1fr 1.5fr 0.8fr 0.8fr;
}

#learningTab .leaderboard-header div:nth-child(5) {
    content: "题包进度";
}

#learningTab .leaderboard-header div:nth-child(6) {
    content: "正确率";
}

#learningTab .leaderboard-header div:nth-child(7) {
    content: "答题数";
}

.topic-progress {
    position: relative;
    height: 26px;
    background-color: rgba(0, 0, 0, 0.04);
    border-radius: 13px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border: 1px solid transparent;
    backdrop-filter: blur(2px);
    max-width: 80%;
}

.dark-mode .topic-progress {
    background-color: rgba(255, 255, 255, 0.06);
}

.topic-progress:hover {
    background-color: rgba(0, 0, 0, 0.06);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.topic-progress:hover .progress-bar {
    animation: progress-pulse 1.5s ease-in-out infinite alternate;
}

@keyframes progress-pulse {
    0% { opacity: 0.8; }
    100% { opacity: 1; }
}

.dark-mode .topic-progress:hover {
    background-color: rgba(255, 255, 255, 0.12);
}

.topic-progress:after {
    content: "\f0d7";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    right: 12px;
    color: rgba(26, 115, 232, 0.5);
    font-size: 14px;
    transition: all 0.3s;
    background-color: rgba(255, 255, 255, 0.9);
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.dark-mode .topic-progress:after {
    color: rgba(138, 180, 248, 0.7);
    background-color: rgba(32, 33, 36, 0.8);
}

.topic-progress:hover:after {
    transform: translateY(0) scale(1.2) rotate(180deg);
    color: var(--primary-color);
    box-shadow: 0 2px 5px rgba(26, 115, 232, 0.3);
}

/* Add shine effect to progress bars */
.topic-progress:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent);
    transform: skewX(-25deg);
    z-index: 3;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.topic-progress:hover:before {
    animation: shine 1.8s ease-in-out infinite;
    opacity: 1;
}

@keyframes shine {
    0% { left: -100%; }
    100% { left: 150%; }
}

.topic-progress .progress-bar {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    border-radius: 13px;
    z-index: 1;
    transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    background-image: linear-gradient(45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent);
    background-size: 20px 20px;
    animation: progress-bar-stripes 1.8s linear infinite;
}

@keyframes progress-bar-stripes {
    from { background-position: 20px 0; }
    to { background-position: 0 0; }
}

.topic-progress .progress-bar.low {
    background-color: rgba(66, 133, 244, 0.3);
    box-shadow: 0 0 8px rgba(66, 133, 244, 0.2);
    background-image: linear-gradient(90deg, rgba(50, 120, 230, 0.3), rgba(70, 140, 250, 0.4)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.topic-progress .progress-bar.medium {
    background-color: rgba(66, 133, 244, 0.5);
    box-shadow: 0 0 8px rgba(66, 133, 244, 0.3);
    background-image: linear-gradient(90deg, rgba(50, 120, 230, 0.5), rgba(70, 140, 250, 0.6)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.topic-progress .progress-bar.high {
    background-color: rgba(66, 133, 244, 0.7);
    box-shadow: 0 0 8px rgba(66, 133, 244, 0.4);
    background-image: linear-gradient(90deg, rgba(50, 120, 230, 0.7), rgba(20, 100, 220, 0.8)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.topic-progress:hover .progress-bar.low {
    box-shadow: 0 0 12px rgba(66, 133, 244, 0.4);
}

.topic-progress:hover .progress-bar.medium {
    box-shadow: 0 0 12px rgba(66, 133, 244, 0.5);
}

.topic-progress:hover .progress-bar.high {
    box-shadow: 0 0 12px rgba(66, 133, 244, 0.6);
}

.topic-progress span {
    position: relative;
    z-index: 2;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-color);
    text-shadow: 0 0 4px rgba(255, 255, 255, 1);
    letter-spacing: 0.5px;
    padding-left: 16px;
    white-space: nowrap;
}

.dark-mode .topic-progress span {
    color: var(--text-color);
    text-shadow: 0 0 4px rgba(0, 0, 0, 0.8);
}

.accuracy-column, .answers-column {
    font-weight: 500;
}

.leaderboard-header {
    display: grid;
    grid-template-columns: 0.5fr 1fr 1fr 1fr 0.8fr 0.8fr 1.2fr;
    background-color: var(--secondary-color);
    padding: 15px;
    font-weight: 600;
    border-bottom: 1px solid var(--light-gray);
    transition: background-color var(--transition-speed);
}

.leaderboard-body {
    max-height: 100%;
    overflow-y: auto;
}

.leaderboard-row {
    display: grid;
    grid-template-columns: 0.5fr 1fr 1fr 1fr 0.8fr 0.8fr 1.2fr;
    padding: 15px;
    border-bottom: 1px solid var(--light-gray);
    transition: background-color var(--transition-speed);
}

.leaderboard-row:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.02);
}

.dark-mode .leaderboard-row:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}

.leaderboard-row:hover {
    background-color: rgba(26, 115, 232, 0.05);
}

.dark-mode .leaderboard-row:hover {
    background-color: rgba(26, 115, 232, 0.1);
}

.rank-column {
    font-weight: 600;
}

.top-rank {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: white;
    font-weight: 700;
}

.rank-1 {
    background-color: #f5b800;
}

.rank-2 {
    background-color: #9e9e9e;
}

.rank-3 {
    background-color: #cd7f32;
}

.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
    margin-bottom: 15px;
}

.dark-mode .spinner {
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary-color);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-indicator p {
    color: var(--text-secondary);
}

.empty-data {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 0;
    color: var(--text-secondary);
}

.empty-data i {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--light-gray);
}

/* 图表区域样式 */
.charts-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.chart-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: var(--card-shadow);
    transition: background-color var(--transition-speed);
    border: 1px solid var(--light-gray);
}

.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.chart-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.chart-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

.chart-btn {
    background: none;
    border: 1px solid var(--light-gray);
    border-radius: 4px;
    padding: 5px 10px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-speed);
    color: var(--text-secondary);
}

.chart-btn:hover {
    background-color: rgba(242, 245, 250, 0.3);
}

.dark-mode .chart-btn:hover {
    background-color: rgba(60, 64, 67, 0.8);
}

.chart-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.export-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
}

.chart-body {
    height: 300px;
    position: relative;
}

/* 响应式调整 */
@media screen and (max-width: 1200px) {
    .dashboard-stats,
    .charts-section {
        grid-template-columns: 1fr 1fr;
    }
}

@media screen and (max-width: 992px) {
    .window-title h2 {
        font-size: 1rem;
    }

    .main-content {
        padding: 15px;
        margin-top: 5px;
    }
}

@media screen and (max-width: 768px) {
    .dashboard-stats,
    .charts-section {
        grid-template-columns: 1fr;
    }

    .window-controls {
        display: none;
    }

    .leaderboard-header,
    .leaderboard-row {
        grid-template-columns: 0.5fr 2fr 2fr 1fr 1fr 1fr;
    }

    .position-column {
        display: none;
    }
}

@media screen and (max-width: 576px) {
    body {
        font-size: 14px;
    }

    .app-container {
        padding: 0;
    }

    .main-content {
        padding: 10px;
        margin-top: 0;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .date-picker {
        margin-top: 10px;
        width: 100%;
    }

    .date-input {
        width: 120px;
    }

    .leaderboard-header,
    .leaderboard-row {
        grid-template-columns: 0.5fr 2fr 1fr 1fr;
    }

    .department-column,
    .time-column {
        display: none;
    }
}

/* 窗口状态 - 最小化和最大化 */
.app-container.minimized {
    transform: scale(0.8);
    opacity: 0.8;
    transition: all 0.3s ease;
}

.app-container.maximized {
    width: 100%;
    height: 100vh;
    max-width: none;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    border-radius: 0;
    transition: all 0.3s ease;
}

/* 题包详情弹窗样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    box-shadow: var(--window-shadow);
    overflow: hidden;
    transform: translateY(-20px);
    transition: transform 0.3s;
    border: 1px solid var(--light-gray);
}

.modal.show .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--light-gray);
}

.modal-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s;
}

.close-btn:hover {
    color: var(--danger-color);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: calc(90vh - 70px);
}

.user-info-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
    background-color: rgba(0, 0, 0, 0.02);
    padding: 20px;
    border-radius: 10px;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

.user-info-summary p {
    margin: 0;
    padding: 8px 15px;
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: 6px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
}

.user-info-summary p strong {
    margin-right: 8px;
    color: var(--primary-color);
}

.dark-mode .user-info-summary {
    background-color: rgba(255, 255, 255, 0.05);
}

.dark-mode .user-info-summary p {
    background-color: rgba(0, 0, 0, 0.3);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.topic-details-table-container {
    overflow-x: auto;
}

.topic-details-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
}

.topic-details-table th {
    background-color: var(--secondary-color);
    font-weight: 600;
    color: var(--text-color);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    padding: 14px 15px;
}

.topic-details-table th:first-child {
    border-top-left-radius: 8px;
}

.topic-details-table th:last-child {
    border-top-right-radius: 8px;
}

.topic-details-table tr:last-child td:first-child {
    border-bottom-left-radius: 8px;
}

.topic-details-table tr:last-child td:last-child {
    border-bottom-right-radius: 8px;
}

.topic-details-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--light-gray);
    vertical-align: middle;
}

.topic-details-table tr {
    transition: all 0.2s ease;
}

.topic-details-table tr:hover {
    background-color: rgba(26, 115, 232, 0.05);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.dark-mode .topic-details-table tr:hover {
    background-color: rgba(138, 180, 248, 0.08);
}

.topic-details-table tr.not-learned {
    color: var(--text-secondary);
    background-color: rgba(0, 0, 0, 0.01);
}

.dark-mode .topic-details-table tr.not-learned {
    background-color: rgba(255, 255, 255, 0.02);
}

.topic-details-table tr.not-learned:hover {
    background-color: rgba(0, 0, 0, 0.03);
}

.dark-mode .topic-details-table tr.not-learned:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

.topic-detail-progress {
    position: relative;
    height: 22px;
    background-color: rgba(0, 0, 0, 0.04);
    border-radius: 11px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.topic-detail-progress:hover {
    background-color: rgba(0, 0, 0, 0.06);
}

.dark-mode .topic-detail-progress {
    background-color: rgba(255, 255, 255, 0.06);
}

.dark-mode .topic-detail-progress:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.topic-detail-progress .progress-bar {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    border-radius: 11px;
    z-index: 1;
    transition: width 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    background-image: linear-gradient(45deg,
        rgba(255, 255, 255, 0.15) 25%,
        transparent 25%,
        transparent 50%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0.15) 75%,
        transparent 75%,
        transparent);
    background-size: 16px 16px;
    animation: progress-bar-stripes 2s linear infinite;
}

.topic-detail-progress:hover .progress-bar {
    animation: detail-progress-pulse 1.5s ease-in-out infinite alternate;
}

@keyframes detail-progress-pulse {
    0% { opacity: 0.8; }
    100% { opacity: 1; }
}

.topic-detail-progress .progress-bar.low {
    background-color: rgba(66, 133, 244, 0.3);
    box-shadow: 0 0 6px rgba(66, 133, 244, 0.2);
    background-image: linear-gradient(90deg, rgba(50, 120, 230, 0.3), rgba(70, 140, 250, 0.4)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.topic-detail-progress .progress-bar.medium {
    background-color: rgba(66, 133, 244, 0.5);
    box-shadow: 0 0 6px rgba(66, 133, 244, 0.3);
    background-image: linear-gradient(90deg, rgba(50, 120, 230, 0.5), rgba(70, 140, 250, 0.6)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.topic-detail-progress .progress-bar.high {
    background-color: rgba(66, 133, 244, 0.7);
    box-shadow: 0 0 6px rgba(66, 133, 244, 0.4);
    background-image: linear-gradient(90deg, rgba(50, 120, 230, 0.7), rgba(20, 100, 220, 0.8)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.topic-detail-progress span {
    position: relative;
    z-index: 2;
    font-weight: 500;
    font-size: 0.85rem;
    color: var(--text-color);
    text-shadow: 0 0 4px rgba(255, 255, 255, 1);
    padding-left: 12px;
}

.dark-mode .topic-detail-progress span {
    text-shadow: 0 0 4px rgba(0, 0, 0, 0.8);
}

/* 状态消息样式 */
.status-message {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    max-width: 350px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transform: translateY(100px);
    opacity: 0;
    transition: transform 0.3s, opacity 0.3s;
    z-index: 2000;
    font-weight: 500;
    border-left: 4px solid transparent;
}

.status-message.show {
    transform: translateY(0);
    opacity: 1;
}

.status-message.success {
    background-color: var(--success-color);
    border-left-color: #267c3d;
}

.status-message.error {
    background-color: var(--danger-color);
    border-left-color: #b92e22;
}

.status-message.info {
    background-color: var(--primary-color);
    border-left-color: #0d5bbc;
}

.status-message i {
    font-size: 1.2rem;
}

.status-message span {
    line-height: 1.4;
}

.empty-data.error {
    color: var(--danger-color);
}

.retry-btn {
    margin-top: 10px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.2s;
}

.retry-btn:hover {
    background-color: #0d5bbc;
}

.dark-mode .retry-btn:hover {
    background-color: #6da5f7;
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translateY(-20px); }
    10% { opacity: 1; transform: translateY(0); }
    90% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(-20px); }
}

/* Dark mode blues */
.dark-mode .topic-progress .progress-bar.low {
    background-color: rgba(138, 180, 248, 0.3);
    box-shadow: 0 0 8px rgba(138, 180, 248, 0.2);
    background-image: linear-gradient(90deg, rgba(120, 170, 245, 0.3), rgba(150, 190, 250, 0.4)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.dark-mode .topic-progress .progress-bar.medium {
    background-color: rgba(138, 180, 248, 0.5);
    box-shadow: 0 0 8px rgba(138, 180, 248, 0.3);
    background-image: linear-gradient(90deg, rgba(120, 170, 245, 0.5), rgba(150, 190, 250, 0.6)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.dark-mode .topic-progress .progress-bar.high {
    background-color: rgba(138, 180, 248, 0.7);
    box-shadow: 0 0 8px rgba(138, 180, 248, 0.4);
    background-image: linear-gradient(90deg, rgba(120, 170, 245, 0.7), rgba(100, 150, 240, 0.8)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.topic-detail-progress .progress-bar.low {
    background-color: rgba(66, 133, 244, 0.3);
    box-shadow: 0 0 6px rgba(66, 133, 244, 0.2);
    background-image: linear-gradient(90deg, rgba(50, 120, 230, 0.3), rgba(70, 140, 250, 0.4)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.topic-detail-progress .progress-bar.medium {
    background-color: rgba(66, 133, 244, 0.5);
    box-shadow: 0 0 6px rgba(66, 133, 244, 0.3);
    background-image: linear-gradient(90deg, rgba(50, 120, 230, 0.5), rgba(70, 140, 250, 0.6)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.topic-detail-progress .progress-bar.high {
    background-color: rgba(66, 133, 244, 0.7);
    box-shadow: 0 0 6px rgba(66, 133, 244, 0.4);
    background-image: linear-gradient(90deg, rgba(50, 120, 230, 0.7), rgba(20, 100, 220, 0.8)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.dark-mode .topic-detail-progress .progress-bar.low {
    background-color: rgba(138, 180, 248, 0.3);
    box-shadow: 0 0 6px rgba(138, 180, 248, 0.2);
    background-image: linear-gradient(90deg, rgba(120, 170, 245, 0.3), rgba(150, 190, 250, 0.4)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.dark-mode .topic-detail-progress .progress-bar.medium {
    background-color: rgba(138, 180, 248, 0.5);
    box-shadow: 0 0 6px rgba(138, 180, 248, 0.3);
    background-image: linear-gradient(90deg, rgba(120, 170, 245, 0.5), rgba(150, 190, 250, 0.6)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

.dark-mode .topic-detail-progress .progress-bar.high {
    background-color: rgba(138, 180, 248, 0.7);
    box-shadow: 0 0 6px rgba(138, 180, 248, 0.4);
    background-image: linear-gradient(90deg, rgba(120, 170, 245, 0.7), rgba(100, 150, 240, 0.8)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent);
}

/* 多条记录指示器 */
.multiple-indicator {
    display: inline-flex;
    align-items: center;
    padding: 0 6px;
    margin-left: 5px;
    height: 20px;
    font-size: 11px;
    border-radius: 10px;
    background-color: rgba(0, 0, 0, 0.05);
    color: #444;
    white-space: nowrap;
}

.multiple-indicator i {
    margin-right: 3px;
    font-size: 10px;
}

.dark-mode .multiple-indicator {
    background-color: rgba(255, 255, 255, 0.1);
    color: #ccc;
}

/* 最佳成绩行样式 */
.leaderboard-row.best-score {
    background-color: rgba(255, 248, 225, 0.3);
}

.dark-mode .leaderboard-row.best-score {
    background-color: rgba(255, 193, 7, 0.1);
}

/* 最佳成绩指示器 */
.multiple-indicator.best {
    background-color: rgba(255, 193, 7, 0.2);
}

.dark-mode .multiple-indicator.best {
    background-color: rgba(255, 193, 7, 0.25);
}

/* 可展开行的样式 */
.leaderboard-row.expandable {
    cursor: pointer;
    position: relative;
}

.leaderboard-row.expandable:after {
    content: '\f078'; /* 向下箭头图标 */
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    font-size: 10px;
    color: #888;
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.6;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.dark-mode .leaderboard-row.expandable:after {
    color: #aaa;
}

.leaderboard-row.expandable:hover:after {
    opacity: 1;
}

.leaderboard-row.expandable.expanded:after {
    transform: translateY(-50%) rotate(180deg);
}

.leaderboard-row.expandable:hover {
    background-color: rgba(0, 0, 0, 0.03);
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.dark-mode .leaderboard-row.expandable:hover {
    background-color: rgba(255, 255, 255, 0.05);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.expanded-scores {
    background-color: rgba(0, 0, 0, 0.02);
    border-left: 3px solid #ddd;
    animation: slideDown 0.3s ease forwards;
}

.dark-mode .expanded-scores {
    background-color: rgba(255, 255, 255, 0.03);
    border-left: 3px solid #555;
}

.expanded-name {
    padding-left: 15px;
    color: #666;
    font-style: italic;
}

.attempt-number {
    font-size: 12px;
    background-color: rgba(0, 0, 0, 0.05);
    padding: 2px 8px;
    border-radius: 10px;
    font-style: normal;
}

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

/* 优化折叠状态指示器 */
.fold-status {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 8px 0;
    padding: 10px 15px;
    background-color: rgba(0, 0, 0, 0.03);
    border-radius: 8px;
    font-size: 0.9rem;
    position: sticky;
    top: 0;
    z-index: 10;
    transition: all 0.3s ease;
    border-left: 3px solid var(--primary-color);
}

.fold-status:hover {
    background-color: rgba(0, 0, 0, 0.05);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.dark-mode .fold-status {
    background-color: rgba(255, 255, 255, 0.05);
    border-left: 3px solid var(--primary-color);
}

.dark-mode .fold-status:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.fold-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: rgba(26, 115, 232, 0.1);
    transition: all 0.3s ease;
}

.fold-status:hover .fold-icon {
    transform: scale(1.1);
}

.fold-icon.folded {
    background-color: rgba(26, 115, 232, 0.15);
    color: var(--primary-color);
}

.fold-icon.unfolded {
    background-color: rgba(52, 168, 83, 0.15);
    color: #34a853;
}

.dark-mode .fold-icon.folded {
    background-color: rgba(138, 180, 248, 0.2);
}

.dark-mode .fold-icon.unfolded {
    background-color: rgba(52, 168, 83, 0.25);
}

.fold-status i {
    font-size: 0.9rem;
}

.fold-status span {
    font-weight: 500;
}

.fold-status .fold-count {
    color: #ea4335;
    font-weight: bold;
    margin: 0 2px;
}

/* 折叠切换按钮样式 */
.toggle-fold-btn {
    margin-left: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 15px;
    border-radius: 8px;
    background-color: var(--accent-color);
    color: white;
    border: none;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

.toggle-fold-btn:hover {
    background-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
}

.toggle-fold-btn.folded {
    background-color: var(--accent-color);
}

.toggle-fold-btn.unfolded {
    background-color: var(--primary-color);
}

.toggle-fold-btn .fold-btn-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.toggle-fold-btn:hover .fold-btn-icon {
    transform: scale(1.1);
    background-color: rgba(255, 255, 255, 0.3);
}

.fold-btn-icon i {
    font-size: 0.9rem;
    color: white;
}

.fold-btn-text {
    display: flex;
    flex-direction: column;
    text-align: left;
    line-height: 1.2;
}

.fold-btn-title {
    font-weight: 600;
    font-size: 0.85rem;
}

.fold-btn-subtitle {
    font-size: 0.75rem;
    opacity: 0.9;
}

.dark-mode .toggle-fold-btn {
    background-color: #2c3e50;
}

.dark-mode .toggle-fold-btn.unfolded {
    background-color: #3498db;
}

.dark-mode .toggle-fold-btn:hover {
    background-color: #34495e;
}

.today-btn {
    display: flex;
    align-items: center;
    background-color: var(--warning-color);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 8px 15px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color var(--transition-speed);
    margin-right: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.today-btn:hover {
    background-color: #e9a800;
    transform: translateY(-1px);
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

.today-btn i {
    margin-right: 8px;
}

.dark-mode .today-btn {
    background-color: #e9a800;
}

.dark-mode .today-btn:hover {
    background-color: #ffb700;
}