* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

:root {
    --primary-color: #667eea;
    --primary-dark: #764ba2;
    --secondary-color: #f7f9fc;
    --text-color: #2d3748;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --success-color: #48bb78;
    --hover-color: #f8f9fa;
}

body {
    background-color: #f0f2f5;
    min-height: 100vh;
    color: var(--text-color);
}

.navbar {
    background: linear-gradient(to right, var(--primary-color), var(--primary-dark));
    padding: 1rem;
    margin-bottom: 20px;
}

.navbar-brand {
    color: white !important;
    font-weight: 600;
    font-size: 1.2rem;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.navbar-icon {
    color: white;
    font-size: 1.4rem;
    margin-right: 8px;
}

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

/* 检索选项卡样式 */
.search-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 15px 30px;
    font-size: 1.1em;
    border: none;
    border-radius: 12px;
    background-color: white;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px var(--shadow-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn i {
    font-size: 1.2em;
}

.tab-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

/* 搜索面板样式 */
.search-panel {
    display: none;
    background-color: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow-color);
    margin-bottom: 30px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.search-panel.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* 输入框和选择框通用样式 */
.form-control, .form-select {
    border: 2px solid var(--border-color);
    padding: 12px 15px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 1em;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* 按钮通用样式 */
.search-btn {
    padding: 12px 24px;
    font-size: 1.1em;
    border: none;
    border-radius: 8px;
    background: linear-gradient(to right, var(--primary-color), var(--primary-dark));
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* 简单检索样式 */
.search-box {
    margin-bottom: 20px;
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group .form-control {
    flex: 1;
}

.input-group .form-select {
    width: 150px;
    min-width: 150px;
}

/* 高级检索样式 */
.advanced-search-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.advanced-search-form .search-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 45px;
    margin: 0 auto;
    min-width: 150px;
}

.advanced-search-form .search-btn i {
    font-size: 1.1em;
    display: flex;
    align-items: center;
}

.search-row {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 15px;
    background-color: var(--secondary-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.search-row .field-select,
.search-row .operator {
    width: 150px;
    min-width: 150px;
}

.search-row .form-control {
    flex: 1;
    min-width: 200px;
}

.add-condition, .remove-condition {
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;  /* 防止按钮被压缩 */
}

.add-condition {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.add-condition:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.remove-condition {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
}

.remove-condition:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

.add-condition i, .remove-condition i {
    font-size: 1.2em;
    line-height: 1;
}

.date-range {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px;
    background-color: var(--secondary-color);
    border-radius: 12px;
    flex-wrap: nowrap;
}

.date-range label {
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 5px;
    min-width: fit-content;
}

.date-range input {
    width: 120px;
}

.date-range span {
    white-space: nowrap;
}

/* 拼音检索样式 */
.pinyin-type {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}

.pinyin-type button {
    padding: 12px 24px;
    border-radius: 8px;
    background: white;
    color: var(--text-color);
    border: 2px solid var(--border-color);
}

.pinyin-type button.active {
    background: linear-gradient(to right, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
}

.pinyin-search-input {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto 20px;
}

.pinyin-search-input input {
    width: 100%;
    padding: 12px 40px 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1em;
    background-color: var(--secondary-color);
}

.pinyin-search-input input:disabled {
    cursor: not-allowed;
    opacity: 0.8;
}

.pinyin-search-input .clear-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.pinyin-search-input .clear-btn i {
    font-size: 1.5em;
}

.pinyin-search-input .clear-btn:hover {
    opacity: 1;
}

.letter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
    gap: 12px;
    padding: 20px;
}

.letter-grid button {
    aspect-ratio: 1;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3em;
    background: white;
    color: var(--text-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
    outline: none;
}

.letter-grid button:focus {
    outline: none;
    border-color: var(--border-color);
}

.letter-grid button:hover,
.letter-grid button.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

/* 分类检索样式 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 15px;
    padding: 20px;
}

.category-grid button {
    padding: 20px;
    text-align: left;
    background: white;
    color: var(--text-color);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1em;
    transition: all 0.3s ease;
    outline: none;
}

.category-grid button:focus {
    outline: none;
    border-color: var(--border-color);
}

.category-grid button.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.category-grid button:hover {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.category-grid button i {
    color: var(--primary-color);
    font-size: 2em;
    transition: color 0.3s ease;
    margin-right: 10px;
}

.category-grid button:hover i,
.category-grid button.active i {
    color: white;
}

/* 检索结果样式 */
.search-results {
    background-color: white;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow-color);
}

.result-options {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 30px;
    padding: 20px;
    background-color: var(--secondary-color);
    border-radius: 12px;
}

.display-options,
.sort-options,
.page-size {
    display: flex;
    align-items: center;
    gap: 10px;
}

.display-options .form-select {
    width: 120px;
}

.sort-options .form-select {
    width: 100px;
}
.sort-field{
    width: 120px !important;
}
.page-size .form-select {
    width: 80px;
}

.result-options label {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-color);
    font-weight: 500;
    white-space: nowrap;
}

.result-options label i {
    color: var(--primary-color);
}

.search-result {
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 15px;
    background-color: var(--secondary-color);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.search-result:hover {
    transform: translateX(10px);
    box-shadow: -4px 4px 15px var(--shadow-color);
}

.search-result h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.2em;
}

.search-result p {
    margin: 8px 0;
    color: var(--text-color);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-top: 30px;
}

.pagination button {
    min-width: 120px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 1.1em;
    color: var(--text-color);
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
    padding: 0 20px;
}

.pagination button:hover {
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.pagination button i {
    font-size: 1.2em;
    transition: transform 0.3s ease;
}

.pagination button:first-child:hover i {
    transform: translateX(-4px);
}

.pagination button:last-child:hover i {
    transform: translateX(4px);
}

.page-info {
    font-size: 1.1em;
    color: var(--text-color);
    padding: 10px 20px;
    background-color: var(--secondary-color);
    border-radius: 8px;
    min-width: 150px;
    text-align: center;
    border: 2px solid var(--border-color);
}

/* 响应式设计优化 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .search-tabs {
        flex-direction: column;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .result-options {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-row {
        flex-wrap: wrap;
    }
    
    .letter-grid {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }

    .display-options,
    .sort-options,
    .page-size {
        flex-direction: column;
        align-items: stretch;
    }

    .display-options .form-select,
    .sort-options .form-select,
    .page-size .form-select {
        width: 100%;
    }

    .date-range {
        flex-wrap: wrap;
    }
    
    .date-range input {
        width: 100%;
    }
}

/* 添加动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.search-result {
    animation: fadeIn 0.5s ease forwards;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
    display: none;
}

.result-table th,
.result-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.result-table th {
    background-color: var(--secondary-color);
    color: var(--text-color);
    font-weight: 600;
    white-space: nowrap;
}

.result-table tr {
    background-color: white;
    transition: all 0.3s ease;
}

.result-table tr:hover {
    background-color: var(--hover-color);
    transform: translateX(5px);
}

.result-table td {
    color: var(--text-color);
}

.result-list.table-view .search-result {
    display: none;
}

.result-list.table-view .result-table {
    display: table;
}

.result-list.detail-view .search-result {
    display: block;
}

.result-list.detail-view .result-table {
    display: none;
} 
.search-tips {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    /* min-height: 300px; */
    padding: 20px;
    text-align: center;
}
.search-tip{
    display: none;
}
.search-tips > div {
    margin: 20px 0;
}

.search-tips i {
    font-size: 48px;
    color: #6c757d;
    margin-bottom: 15px;
}

.search-tips p {
    font-size: 18px;
    color: #6c757d;
    margin: 0;
}
.total-books{
    font-size: 16px;
    color: #fff;
}
.not-data-tip{
    display: none;
    font-size: 18px;
    color: #6c757d;
    margin: 0;
}