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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f1f5f9;
    --sidebar-bg: #1e293b;
    --sidebar-text: #e2e8f0;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏样式 */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    color: var(--sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 600;
}

.logo i {
    color: var(--primary-color);
    font-size: 24px;
}

.sidebar-nav {
    flex: 1;
    padding: 15px 10px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 5px;
    cursor: pointer;
    transition: all 0.2s;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

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

.nav-item i {
    width: 20px;
    text-align: center;
}

.nav-item.coming-soon {
    opacity: 0.5;
    cursor: not-allowed;
}

.nav-item.coming-soon::after {
    content: '即将上线';
    font-size: 10px;
    background-color: var(--warning-color);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: auto;
}

.sidebar-footer {
    padding: 15px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.version {
    font-size: 12px;
    opacity: 0.6;
}

/* 主内容区 */
.main-content {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
}

.top-header {
    background-color: var(--card-bg);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-title h1 {
    font-size: 20px;
    font-weight: 600;
}

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

.btn-icon {
    width: 40px;
    height: 40px;
    border: none;
    background-color: transparent;
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: all 0.2s;
}

.btn-icon:hover {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

/* 内容区域 */
.content-area {
    flex: 1;
    padding: 30px;
}

.module-panel {
    animation: fadeIn 0.3s ease;
}

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

.panel-header {
    margin-bottom: 25px;
}

.panel-header h2 {
    font-size: 24px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 步骤区域 */
.step-section {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.step-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.step-number {
    width: 28px;
    height: 28px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
}

.step-header h3 {
    font-size: 16px;
    font-weight: 600;
    flex: 1;
}

.record-count {
    font-size: 13px;
    color: var(--text-secondary);
    background-color: var(--bg-color);
    padding: 4px 12px;
    border-radius: 20px;
}

/* 上传区域 */
.upload-area {
    display: flex;
    align-items: center;
    gap: 20px;
}

.upload-box.large {
    flex: 1;
    padding: 40px;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background-color: var(--bg-color);
}

.upload-box.large:hover {
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.05);
}

.upload-box.large.dragover {
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.1);
}

.upload-box.large i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.upload-box.large p {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.btn-lg {
    padding: 15px 30px;
    font-size: 15px;
}

/* 功能按钮区 */
.function-buttons {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.function-group {
    background-color: var(--bg-color);
    border-radius: 10px;
    padding: 20px;
}

.function-group h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.function-group h4 i {
    color: var(--primary-color);
}

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

/* 规则说明卡片 */
.rule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 15px;
}

.rule-card {
    background-color: var(--bg-color);
    border-radius: 8px;
    overflow: hidden;
}

.rule-card-header {
    background-color: var(--primary-color);
    color: white;
    padding: 10px 15px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.rule-card-body {
    padding: 15px;
}

.rule-card-body p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.rule-formula {
    font-family: monospace;
    background-color: var(--card-bg);
    padding: 8px 12px;
    border-radius: 4px;
    color: var(--text-primary) !important;
    font-weight: 500;
}

/* 导出区域 */
.export-section {
    background-color: var(--bg-color);
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
}

.export-section h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.export-section h4 i {
    color: var(--primary-color);
}

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

.panel-header h2 i {
    color: var(--primary-color);
}

/* 上传区域 */
.upload-section {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    margin-bottom: 30px;
}

.upload-box {
    flex: 1;
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background-color: var(--card-bg);
}

.upload-box:hover, .upload-box.dragover {
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.05);
}

.upload-box i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.upload-box p {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 13px;
    color: var(--text-secondary);
}

/* 按钮样式 */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}

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

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--bg-color);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* 统计卡片 */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: white;
}

.stat-icon.blue { background-color: var(--primary-color); }
.stat-icon.green { background-color: var(--success-color); }
.stat-icon.orange { background-color: var(--warning-color); }

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

/* 导出按钮 */
.export-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
}

/* 表格样式 */
.data-table-container {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 25px;
    box-shadow: var(--shadow);
}

.data-table-container h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.data-table-container h3 i {
    color: var(--primary-color);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: var(--bg-color);
    font-weight: 600;
    font-size: 13px;
    color: var(--text-secondary);
}

.data-table tbody tr:hover {
    background-color: rgba(37, 99, 235, 0.02);
}

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

/* 即将上线 */
.coming-soon {
    text-align: center;
    padding: 80px 20px;
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.coming-soon i {
    font-size: 64px;
    color: var(--border-color);
    margin-bottom: 20px;
}

.coming-soon h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.coming-soon p {
    color: var(--text-secondary);
}

/* 消息提示 */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 15px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    min-width: 280px;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.toast.success { background-color: var(--success-color); }
.toast.error { background-color: var(--danger-color); }
.toast.warning { background-color: var(--warning-color); }
.toast.info { background-color: var(--primary-color); }

/* 响应式 */
@media (max-width: 768px) {
    .sidebar {
        width: 80px;
    }
    
    .sidebar .logo span,
    .sidebar .nav-item span,
    .sidebar .version {
        display: none;
    }
    
    .sidebar .logo {
        justify-content: center;
    }
    
    .main-content {
        margin-left: 80px;
    }
    
    .upload-section {
        flex-direction: column;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* 规则说明样式 */
.rule-section {
    background-color: var(--card-bg);
    border-radius: 12px;
    margin-bottom: 25px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.rule-header {
    padding: 15px 20px;
    background-color: var(--bg-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.rule-header h3 {
    font-size: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.rule-header h3 i {
    color: var(--primary-color);
}

.rule-header .fa-chevron-down {
    transition: transform 0.3s;
    color: var(--text-secondary);
}

.rule-header.collapsed .fa-chevron-down {
    transform: rotate(-90deg);
}

.rule-content {
    padding: 20px;
    display: grid;
    gap: 12px;
}

.rule-content.hidden {
    display: none;
}

.rule-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.rule-label {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 80px;
}

.rule-value {
    color: var(--text-secondary);
}

/* 报表类型选择样式 */
.report-type-section {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 25px;
    box-shadow: var(--shadow);
}

.report-type-section h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.report-type-section h3 i {
    color: var(--primary-color);
}

.report-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}

.report-option {
    cursor: pointer;
    display: block;
}

.report-option input {
    display: none;
}

.option-content {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s;
}

.report-option:hover .option-content {
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.02);
}

.report-option input:checked + .option-content {
    border-color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.05);
}

.option-content i {
    font-size: 20px;
    color: var(--primary-color);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-color);
    border-radius: 8px;
}

.option-content div {
    display: flex;
    flex-direction: column;
}

.option-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.option-desc {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 从价计征样式 */
.from-price-section {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 25px;
    box-shadow: var(--shadow);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.section-header h3 {
    font-size: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-header h3 i {
    color: var(--primary-color);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.from-price-desc {
    background-color: var(--bg-color);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.from-price-desc p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.from-price-desc p:last-child {
    margin-bottom: 0;
}

.from-price-desc strong {
    color: var(--text-primary);
}

#fromPriceUploadBox {
    padding: 30px;
}

#fromPriceUploadBox i {
    font-size: 36px;
}

/* 从价计征结果样式 */
.from-price-result {
    margin-top: 20px;
}

.result-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.result-card {
    background-color: var(--bg-color);
    border-radius: 10px;
    padding: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.result-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
}

.result-icon.blue { background-color: var(--primary-color); }
.result-icon.green { background-color: var(--success-color); }

.result-info {
    display: flex;
    flex-direction: column;
}

.result-label {
    font-size: 12px;
    color: var(--text-secondary);
}

.result-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.result-table-container {
    background-color: var(--bg-color);
    border-radius: 10px;
    padding: 15px;
}

.result-table-container h4 {
    font-size: 14px;
    margin-bottom: 12px;
    color: var(--text-primary);
}