* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3498db;
    --secondary-color: #95a5a6;
    --success-color: #27ae60;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --excellent-color: #27ae60;
    --good-color: #3498db;
    --pass-color: #f39c12;
    --bg-color: #f5f6fa;
    --card-bg: #ffffff;
    --text-color: #2c3e50;
    --border-color: #dcdde1;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --font-size-base: 14px;
    --font-size-large: 18px;
    --font-size-xlarge: 24px;
    --font-size-display: 16px;
    --spacing-base: 10px;
    --spacing-large: 15px;
    --spacing-xlarge: 20px;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
}

.container {
    max-width: 1920px;
    margin: 0 auto;
    padding: var(--spacing-xlarge);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background-color: var(--card-bg);
    padding: var(--spacing-xlarge);
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-xlarge);
}

.header-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-large);
    margin-bottom: var(--spacing-large);
}

.header h1 {
    font-size: var(--font-size-xlarge);
    color: var(--primary-color);
    font-weight: bold;
}

.class-management {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
}

.current-class-name {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 4px 12px;
    background-color: var(--bg-color);
    border-radius: 16px;
}

.class-list {
    max-height: 300px;
    overflow-y: auto;
}

.class-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    margin-bottom: 8px;
    background-color: var(--bg-color);
    border-radius: 8px;
    cursor: pointer;
}

.class-item:hover {
    background-color: var(--hover-bg);
}

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

.class-item-name {
    font-weight: bold;
}

.class-item-delete {
    color: var(--danger-color);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
}

.class-item-delete:hover {
    background-color: rgba(231, 76, 60, 0.1);
}

.class-item.active .class-item-delete {
    color: white;
}

.control-buttons {
    display: flex;
    gap: var(--spacing-large);
    flex-wrap: wrap;
}

.btn {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: bold;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 100px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(0);
}

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

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #7f8c8d;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #219a52;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #d68910;
}

.btn-excellent {
    background-color: var(--excellent-color);
    color: white;
    font-size: 16px;
    padding: 12px 24px;
    min-width: 100px;
}

.btn-good {
    background-color: var(--good-color);
    color: white;
    font-size: 16px;
    padding: 12px 24px;
    min-width: 100px;
}

.btn-pass {
    background-color: var(--pass-color);
    color: white;
    font-size: 16px;
    padding: 12px 24px;
    min-width: 100px;
}

.btn-full {
    width: 100%;
    margin-bottom: var(--spacing-base);
}

.btn-info {
    background-color: #17a2b8;
    color: white;
}

.btn-info:hover {
    background-color: #138496;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xlarge);
}

.homework-section,
.students-section {
    background-color: var(--card-bg);
    padding: var(--spacing-xlarge);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-large);
    padding-bottom: var(--spacing-base);
    border-bottom: 3px solid var(--primary-color);
}

.section-header h2 {
    font-size: var(--font-size-large);
    color: var(--text-color);
    margin: 0;
    border: none;
    padding: 0;
}

.section-buttons {
    display: flex;
    gap: 10px;
}

.homework-section h2,
.students-section h2 {
    font-size: var(--font-size-large);
    color: var(--text-color);
    margin-bottom: var(--spacing-large);
    padding-bottom: var(--spacing-base);
    border-bottom: 3px solid var(--primary-color);
}

.homework-display {
    min-height: 120px;
    padding: var(--spacing-large);
    background-color: var(--bg-color);
    border-radius: 8px;
    border: 2px dashed var(--border-color);
}

.homework-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-base);
}

.homework-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.homework-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.homework-card.selected {
    transform: translateY(-3px);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.8), 0 8px 16px rgba(0, 0, 0, 0.3);
    border: 3px solid rgba(255, 255, 255, 0.9);
}

.homework-card-date {
    font-size: 24px;
    opacity: 0.9;
    margin-bottom: var(--spacing-base);
}

.homework-card-day {
    font-size: 14px;
    opacity: 0.8;
    margin-left: 8px;
}

.homework-card-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: var(--spacing-base);
}

.homework-card-content {
    font-size: 13px;
    opacity: 0.95;
    margin-bottom: var(--spacing-base);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.homework-card-image {
    max-width: 100%;
    max-height: 150px;
    border-radius: 8px;
    margin-top: var(--spacing-base);
}

.homework-item {
    padding: var(--spacing-large);
}

.homework-item h3 {
    font-size: var(--font-size-large);
    color: var(--primary-color);
    margin-bottom: var(--spacing-base);
}

.homework-item p {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-base);
}

.homework-item img {
    max-width: 100%;
    max-height: 500px;
    border-radius: 8px;
    margin-top: var(--spacing-base);
}

.placeholder-text {
    text-align: center;
    color: var(--secondary-color);
    font-size: var(--font-size-base);
    padding: var(--spacing-xlarge);
}

.students-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 12px;
    min-height: 100px;
}

.student-card {
    background: linear-gradient(135deg, #FFB6C1 0%, #FFC0CB 100%);
    color: #333;
    padding: 12px 8px;
    border-radius: 12px;
    min-width: 90px;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    font-size: 15px;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.student-card:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.student-card:active {
    transform: translateY(-1px) scale(1.01);
}

.student-name {
    font-size: 22px;
    font-weight: bold;
    text-align: center;
    word-break: break-all;
    line-height: 1.2;
}

.student-status {
    font-size: 12px;
    margin-top: 5px;
    opacity: 0.9;
}

.student-score {
    font-size: 14px;
    font-weight: bold;
    margin-top: 5px;
    opacity: 0.95;
}

.footer {
    background-color: var(--card-bg);
    padding: var(--spacing-large);
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-top: var(--spacing-xlarge);
}

.submission-stats-container {
    width: 100%;
}

.stats-text {
    text-align: center;
    font-size: var(--font-size-base);
    color: var(--text-color);
    margin-bottom: var(--spacing-base);
}

#submission-stats {
    font-weight: bold;
    color: var(--primary-color);
    font-size: var(--font-size-large);
}

#submission-percentage {
    font-weight: bold;
    color: var(--success-color);
    font-size: var(--font-size-base);
    margin-left: var(--spacing-base);
}

.progress-bar-container {
    width: 100%;
    height: 15px;
    background-color: var(--bg-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--success-color) 100%);
    border-radius: 8px;
    transition: width 0.5s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.evaluation-section {
    margin-top: var(--spacing-large);
    padding-top: var(--spacing-large);
    border-top: 2px solid var(--border-color);
}

.evaluation-section h4 {
    font-size: var(--font-size-base);
    color: var(--text-color);
    margin-bottom: var(--spacing-large);
    text-align: center;
}

.active-evaluation {
    transform: scale(1.1);
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.8), 0 6px 12px rgba(0, 0, 0, 0.2);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

#modal-edit-student {
    z-index: 1100;
}

#modal-confirm {
    z-index: 1200;
}

#modal-password {
    z-index: 1200;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: 16px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.modal-small {
    max-width: 500px;
}

.modal-large {
    max-width: 1200px;
}

.modal-header {
    padding: var(--spacing-xlarge);
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: var(--font-size-large);
    color: var(--text-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--secondary-color);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.modal-body {
    padding: var(--spacing-xlarge);
}

.modal-footer {
    padding: var(--spacing-large) var(--spacing-xlarge);
    border-top: 2px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-large);
}

.form-group {
    margin-bottom: var(--spacing-large);
}

.form-group label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: var(--spacing-base);
}

.form-input,
.form-textarea,
.form-file {
    width: 100%;
    padding: var(--spacing-base);
    font-size: var(--font-size-base);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-file {
    padding: var(--spacing-base);
}

.image-preview {
    margin-top: var(--spacing-base);
    text-align: center;
}

.image-preview img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
}

.view-date {
    font-size: 14px;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-large);
}

.view-content {
    font-size: 80px;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: var(--spacing-large);
    white-space: pre-wrap;
    font-weight: 500;
}

.view-image {
    text-align: center;
}

.view-image img {
    max-width: 100%;
    max-height: 600px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.clear-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-base);
}

.history-container {
    display: flex;
    gap: var(--spacing-xlarge);
    min-height: 400px;
}

.history-sidebar {
    width: 250px;
    border-right: 2px solid var(--border-color);
    padding-right: var(--spacing-large);
    overflow-y: auto;
}

.history-sidebar h4 {
    font-size: var(--font-size-base);
    color: var(--text-color);
    margin-bottom: var(--spacing-large);
}

.history-dates {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-base);
}

.history-date-item {
    padding: var(--spacing-base) var(--spacing-large);
    background-color: var(--bg-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: var(--font-size-base);
}

.history-date-item:hover {
    background-color: var(--primary-color);
    color: white;
}

.history-date-item.active {
    background-color: var(--primary-color);
    color: white;
}

.history-date-item.has-homework {
    font-weight: bold;
}

.history-content {
    flex: 1;
    overflow-y: auto;
}

.history-content h4 {
    font-size: var(--font-size-base);
    color: var(--text-color);
    margin-bottom: var(--spacing-large);
}

.history-homeworks {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-large);
    margin-bottom: var(--spacing-large);
}

.history-homework-item {
    padding: var(--spacing-large);
    background-color: var(--bg-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.history-homework-item:hover {
    background-color: var(--primary-color);
    color: white;
}

.history-homework-title {
    font-size: var(--font-size-base);
    font-weight: bold;
    margin-bottom: var(--spacing-base);
}

.history-homework-content {
    font-size: 20px;
    opacity: 0.9;
}

.history-stats {
    padding: var(--spacing-large);
    background-color: var(--bg-color);
    border-radius: 8px;
}

.history-stats h5 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-base);
}

.history-stats p {
    font-size: 20px;
    margin-bottom: var(--spacing-base);
}

.evaluation-name {
    font-size: var(--font-size-large);
    text-align: center;
    margin-bottom: var(--spacing-large);
    color: var(--text-color);
}

.evaluation-current-status {
    text-align: center;
    font-size: var(--font-size-base);
    color: var(--secondary-color);
    margin-bottom: var(--spacing-large);
    padding: var(--spacing-base);
    background-color: var(--bg-color);
    border-radius: 8px;
}

.modal-evaluation-popup {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.evaluation-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

#student-detail-content {
    padding: var(--spacing-base);
}

.detail-row {
    display: flex;
    padding: var(--spacing-base) 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-label {
    font-weight: bold;
    width: 150px;
    flex-shrink: 0;
}

.detail-value {
    flex: 1;
}

.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: white;
    padding: var(--spacing-large) var(--spacing-xlarge);
    border-radius: 8px;
    font-size: var(--font-size-base);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 2000;
}

.toast.show {
    opacity: 1;
}

.toast.success {
    background-color: var(--success-color);
}

.toast.error {
    background-color: var(--danger-color);
}

@media screen and (max-width: 1200px) {
    :root {
        --font-size-base: 22px;
        --font-size-large: 28px;
        --font-size-xlarge: 36px;
        --font-size-display: 26px;
    }
    
    .students-container {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    }
    
    .history-container {
        flex-direction: column;
    }
    
    .history-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 2px solid var(--border-color);
        padding-right: 0;
        padding-bottom: var(--spacing-large);
        max-height: 200px;
    }
}

@media screen and (max-width: 768px) {
    :root {
        --font-size-base: 20px;
        --font-size-large: 24px;
        --font-size-xlarge: 28px;
        --font-size-display: 24px;
        --spacing-base: 12px;
        --spacing-large: 15px;
        --spacing-xlarge: 20px;
    }
    
    .header {
        flex-direction: column;
        text-align: center;
    }
    
    .control-buttons {
        width: 100%;
        justify-content: center;
    }
    
    .btn {
        min-width: 120px;
        padding: var(--spacing-base) var(--spacing-large);
    }
    
    .students-container {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
    
    .student-card {
        min-width: 120px;
        min-height: 80px;
    }
    
    .evaluation-buttons {
        flex-direction: column;
    }
    
    .btn-excellent,
    .btn-good,
    .btn-pass {
        width: 100%;
    }
}

@media screen and (min-width: 1920px) {
    :root {
        --font-size-base: 28px;
        --font-size-large: 36px;
        --font-size-xlarge: 48px;
        --font-size-display: 32px;
    }
    
    .students-container {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
    
    .student-card {
        min-width: 150px;
        min-height: 100px;
    }
}

.tab-container {
    margin-top: var(--spacing-base);
}

.tab-buttons {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-large);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-base) var(--spacing-large);
    font-size: var(--font-size-base);
    font-weight: bold;
    border: none;
    background-color: var(--bg-color);
    color: var(--secondary-color);
    cursor: pointer;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

.tab-btn:hover {
    background-color: #e8e8e8;
}

.tab-btn.active {
    background-color: var(--card-bg);
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-pane {
    display: none;
}

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

.validation-result {
    margin-top: var(--spacing-base);
    padding: var(--spacing-base);
    border-radius: 8px;
    font-size: 20px;
}

.validation-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.validation-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeeba;
    margin-top: var(--spacing-base);
}

.validation-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.validation-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
    margin-top: var(--spacing-base);
}

.excel-preview {
    margin-top: var(--spacing-large);
    padding: var(--spacing-large);
    background-color: var(--bg-color);
    border-radius: 8px;
}

.excel-preview-content p {
    font-size: var(--font-size-base);
    color: var(--text-color);
    margin-bottom: var(--spacing-base);
}

.excel-names-preview {
    font-size: 20px;
    color: var(--secondary-color);
    line-height: 1.8;
}

.students-status-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xlarge);
}

.students-status-section {
    background-color: var(--bg-color);
    padding: var(--spacing-large);
    border-radius: 12px;
}

.status-title {
    font-size: 16px;
    font-weight: bold;
    margin-bottom: var(--spacing-large);
    padding-bottom: var(--spacing-base);
    border-bottom: 2px solid var(--border-color);
}

.submitted-title {
    color: var(--success-color);
    border-bottom-color: var(--success-color);
}

.not-submitted-title {
    color: var(--danger-color);
    border-bottom-color: var(--danger-color);
}

.status-title span {
    font-weight: normal;
    opacity: 0.8;
}

.export-options {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.homework-list {
    margin-top: 15px;
    padding: 10px;
    background-color: var(--bg-color);
    border-radius: 8px;
}

.clear-homework-item {
    display: flex;
    align-items: center;
    padding: 8px;
    margin: 5px 0;
    background-color: white;
    border-radius: 4px;
}

.clear-homework-item input[type="checkbox"] {
    margin-right: 10px;
    width: 18px;
    height: 18px;
}

.clear-homework-item label {
    cursor: pointer;
    flex: 1;
}

.students-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    max-height: 500px;
    overflow-y: auto;
    padding: 10px;
}

.student-manage-card {
    background: linear-gradient(135deg, #FFB6C1 0%, #FFC0CB 100%);
    color: #333;
    padding: 15px 10px;
    border-radius: 12px;
    min-width: 100px;
    min-height: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    font-size: 15px;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.student-manage-card:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.student-manage-card:active {
    transform: translateY(-1px) scale(1.01);
}

.numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 15px;
}

.numpad-btn {
    padding: 15px;
    font-size: 20px;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    background-color: var(--bg-color);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.numpad-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.numpad-btn:active {
    transform: translateY(0);
}

.numpad-delete {
    background-color: var(--danger-color);
    color: white;
}

.numpad-delete:hover {
    background-color: #c0392b;
}

.score-history-container {
    padding: 10px;
}

.score-filter-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.score-clear-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.score-list {
    margin-top: 15px;
}

.score-table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.score-table thead {
    background-color: var(--primary-color);
    color: white;
}

.score-table th,
.score-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.score-table th {
    font-weight: bold;
    font-size: 16px;
}

.score-table tbody tr:hover {
    background-color: var(--bg-color);
}

.score-table tbody tr:last-child td {
    border-bottom: none;
}

.export-scores-section {
    margin-top: 15px;
}

.score-export-preview {
    margin-top: 10px;
    max-height: 250px;
    overflow-y: auto;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    background-color: var(--bg-color);
}

.export-preview-header {
    padding: 8px 12px;
    background-color: #f5f5f5;
    border-bottom: 1px solid #e0e0e0;
    font-size: 13px;
    color: #666;
    position: sticky;
    top: 0;
}

.score-export-preview .score-table {
    font-size: 13px;
    border-collapse: collapse;
    width: 100%;
}

.score-export-preview .score-table th,
.score-export-preview .score-table td {
    padding: 6px 10px;
    text-align: center;
    font-size: 12px;
}