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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px 0;
    text-align: center;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.header p {
    font-size: 1.1em;
    opacity: 0.9;
}

.controls {
    background: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 过滤区域样式 */
.filter-section {
    margin-bottom: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    border: 1px solid #e9ecef;
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #dee2e6;
}

.filter-header h3 {
    font-size: 18px;
    color: #495057;
    margin: 0;
    font-weight: 600;
}

.filter-actions {
    display: flex;
    gap: 10px;
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.filter-item {
    display: flex;
    flex-direction: column;
}

.filter-item label {
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
    color: #495057;
}

.filter-item input,
.filter-item select {
    padding: 10px 12px;
    border: 1px solid #ced4da;
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.filter-item input:focus,
.filter-item select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.action-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: white;
    border-radius: 8px;
    border: 1px solid #e9ecef;
    margin-top: 20px;
}

.stats-section {
    flex: 1;
}

.stats-info {
    font-size: 15px;
    color: #6c757d;
    font-weight: 600;
    padding: 8px 0;
}

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

/* 批量操作区域样式 */
.batch-actions {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 20px;
}

.batch-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.batch-select {
    display: flex;
    align-items: center;
    gap: 10px;
}

.batch-select input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.batch-select label {
    font-weight: bold;
    color: #495057;
    margin: 0;
}

.batch-info {
    font-size: 14px;
    color: #6c757d;
    font-weight: bold;
}

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

/* QA项目选中状态 */
.qa-item.selected {
    background-color: #e3f2fd;
    border-color: #2196f3;
}

.qa-checkbox {
    margin-right: 10px;
}

.qa-checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
}

.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.search-box input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5a6fd8;
    transform: translateY(-2px);
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-outline {
    background: transparent;
    color: #6c757d;
    border: 1px solid #6c757d;
}

.btn-outline:hover {
    background: #6c757d;
    color: white;
}

.qa-list {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.qa-item {
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.qa-item:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.qa-item.selected {
    background-color: #e3f2fd;
    border-color: #2196f3;
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.2);
}

.qa-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    gap: 15px;
}

.qa-checkbox {
    flex-shrink: 0;
}

.qa-id {
    font-weight: bold;
    color: #667eea;
    font-size: 16px;
}

.qa-group {
    background: #f0f0f0;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    color: #666;
}

.qa-id {
    font-weight: bold;
    color: #667eea;
    font-size: 1.2em;
}

.qa-group {
    background: #e9ecef;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.9em;
}

.qa-content {
    margin-bottom: 15px;
}

.nav {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.nav-btn {
    padding: 8px 16px;
    background: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s;
}

.nav-btn:hover {
    background: #667eea;
    color: white;
    border-color: #667eea;
}


.qa-section {
    margin-bottom: 10px;
}

.qa-section h4 {
    color: #495057;
    margin-bottom: 5px;
    font-size: 1em;
}

.message-list {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 5px;
    max-height: 150px;
    overflow-y: auto;
}

.message-item {
    padding: 5px;
    margin-bottom: 5px;
    background: white;
    border-radius: 3px;
    font-size: 0.9em;
    border-left: 3px solid #667eea;
}

.qa-actions {
    display: flex;
    gap: 10px;
}

.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 10px;
    width: 80%;
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
}

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

.close {
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
}

.close:hover {
    color: #000;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

.message-selector {
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    margin-bottom: 15px;
}

.search-results {
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-top: 10px;
}

.search-result-item {
    padding: 10px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: background-color 0.2s;
}

.search-result-item:hover {
    background-color: #f0f0f0;
}

.selected-messages {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 5px;
    margin-top: 10px;
}

.selected-message {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px;
    margin-bottom: 5px;
    background: white;
    border-radius: 3px;
}

.loading {
    text-align: center;
    padding: 20px;
    color: #666;
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: #666;
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 10px;
    opacity: 0.5;
}

/* 搜索相关样式 */
.search-container {
    position: relative;
}

.search-input-wrapper {
    position: relative;
}

.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #ddd;
    border-top: none;
    border-radius: 0 0 5px 5px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    z-index: 1000;
    display: none;
}

.search-suggestion-item {
    padding: 10px 15px;
    cursor: pointer;
    border-bottom: 1px solid #f0f0f0;
    transition: background-color 0.2s;
}

.search-suggestion-item:hover {
    background-color: #f8f9fa;
}

.search-suggestion-item:last-child {
    border-bottom: none;
}

.search-history {
    margin-top: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background: white;
    display: none;
}

.search-history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    border-bottom: 1px solid #eee;
    background: #f8f9fa;
}

.search-history-header span {
    font-weight: bold;
    color: #495057;
}

.btn-clear-history {
    background: none;
    border: none;
    color: #6c757d;
    cursor: pointer;
    font-size: 12px;
    text-decoration: underline;
}

.btn-clear-history:hover {
    color: #495057;
}

.search-history-items {
    max-height: 200px;
    overflow-y: auto;
}

.search-history-item {
    padding: 8px 15px;
    cursor: pointer;
    border-bottom: 1px solid #f8f9fa;
    transition: background-color 0.2s;
}

.search-history-item:hover {
    background-color: #f8f9fa;
}

.search-history-item:last-child {
    border-bottom: none;
}

/* 按钮样式增强 */
.btn-secondary {
    background-color: #6c757d;
    border-color: #6c757d;
}

.btn-secondary:hover {
    background-color: #5a6268;
    border-color: #545b62;
}

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

.btn-info:hover {
    background-color: #138496;
    border-color: #117a8b;
}

/* 搜索结果样式 */
.search-results-header {
    background: #f8f9fa;
    padding: 15px 20px;
    border-radius: 5px;
    margin-bottom: 15px;
    border-left: 4px solid #667eea;
}

.search-results-header h3 {
    margin: 0 0 5px 0;
    color: #495057;
}

.search-summary {
    color: #6c757d;
    font-size: 0.9em;
}

.search-result-item {
    border-left: 3px solid #28a745;
    background: #f8fff9;
}

.message-content {
    background: white;
    padding: 10px;
    border-radius: 3px;
    border: 1px solid #e9ecef;
    margin-top: 5px;
    line-height: 1.5;
}

.message-content mark {
    background-color: #fff3cd;
    padding: 2px 4px;
    border-radius: 2px;
    font-weight: bold;
}

/* 聊天记录预览样式 */
.chat-preview {
    background: white;
    border-radius: 10px;
    overflow: hidden;
}

.chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    text-align: center;
}

.chat-header h3 {
    margin: 0 0 10px 0;
    font-size: 1.5em;
}

.chat-info {
    opacity: 0.9;
    font-size: 0.9em;
}

.chat-container {
    padding: 20px;
    max-height: 400px;
    overflow-y: auto;
    background: #f8f9fa;
}

.chat-message {
    display: flex;
    margin-bottom: 15px;
    animation: fadeIn 0.3s ease;
}

.chat-message.question {
    flex-direction: row;
}

.chat-message.answer {
    flex-direction: row-reverse;
}

.chat-message.other {
    flex-direction: row;
    opacity: 0.7;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    margin: 0 10px;
    flex-shrink: 0;
}

.chat-message.question .message-avatar {
    background: #e3f2fd;
    color: #1976d2;
}

.chat-message.answer .message-avatar {
    background: #f3e5f5;
    color: #7b1fa2;
}

.chat-message.other .message-avatar {
    background: #f5f5f5;
    color: #757575;
}

.message-content {
    flex: 1;
    max-width: 70%;
}

.message-header {
    display: flex;
    align-items: center;
    margin-bottom: 5px;
    gap: 10px;
}

.sender {
    font-weight: bold;
    color: #333;
}

.time {
    font-size: 0.8em;
    color: #666;
}

.message-type-badge {
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7em;
    font-weight: bold;
}

.message-type-badge.question {
    background: #e3f2fd;
    color: #1976d2;
}

.message-type-badge.answer {
    background: #f3e5f5;
    color: #7b1fa2;
}

.message-type-badge.other {
    background: #f5f5f5;
    color: #757575;
}

.message-text {
    background: white;
    padding: 12px 15px;
    border-radius: 18px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    line-height: 1.4;
    word-wrap: break-word;
}

.chat-message.question .message-text {
    background: #e3f2fd;
    border-bottom-left-radius: 5px;
}

.chat-message.answer .message-text {
    background: #f3e5f5;
    border-bottom-right-radius: 5px;
}

.chat-message.other .message-text {
    background: #f5f5f5;
    border-radius: 18px;
}

.message-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 5px;
    font-size: 0.7em;
    color: #999;
}

.chat-summary {
    background: white;
    padding: 15px 20px;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: space-around;
}

.summary-item {
    text-align: center;
}

.summary-label {
    display: block;
    font-size: 0.8em;
    color: #666;
    margin-bottom: 5px;
}

.summary-value {
    display: block;
    font-size: 1.2em;
    font-weight: bold;
    color: #667eea;
}

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