/* ============================================
   CSS 变量规范 (Design Tokens)
   ============================================ */
:root {
    /* 主题色 */
    --color-primary: #0066cc;
    --color-primary-hover: #0052b3;
    --color-primary-active: #004699;

    /* 功能色 */
    --color-success: #00b42a;
    --color-warning: #ffc440;
    --color-error: #ff4d4f;
    --color-danger: #cf1322;

    /* 中性色 */
    --color-bg-base: #f5f5f5;
    --color-bg-card: #ffffff;
    --color-bg-header: #fafafa;
    --color-bg-hover: #f0f7ff;
    --color-bg-mask: rgba(0, 0, 0, 0.45);

    --color-border: #d9d9d9;
    --color-border-light: #e8e8e8;

    --color-text-primary: #333333;
    --color-text-secondary: #666666;
    --color-text-placeholder: #8c8c8c;
    --color-text-disabled: #bfbfbf;

    /* 尺寸 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;

    /* 圆角 */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 8px;

    /* 阴影 */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 6px 16px rgba(0, 0, 0, 0.08), 0 3px 6px rgba(0, 0, 0, 0.04);

    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;

    /* 过渡 */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
}

/* ============================================
   重置与基础 (Reset & Base)
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg-base);
    color: var(--color-text-primary);
    line-height: 1.5;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
}

input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   布局 (Layout)
   ============================================ */
.container {
    display: flex;
    min-height: 100vh;
}

.content {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
}

/* ============================================
   导航栏 (Navbar)
   ============================================ */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 60px;
    min-height: 64px;
    height: 64px;
    line-height: normal;
    background: var(--color-bg-card);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 999;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-height: 64px;
}

.logo svg {
    width: 40px;
    height: 40px;
}

.navbar .minimax-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
    line-height: 1.2;
}

.navbar .minimax-text .title {
    font-size: 16px;
    font-weight: 600;
}

.navbar .minimax-text .subtitle {
    font-size: 12px;
    color: var(--color-text-secondary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
    list-style: none;
}

.nav-menu li {
    display: flex;
    align-items: center;
}

.nav-menu a {
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
}

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

.nav-btn {
    padding: 10px 24px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    transition: background var(--transition-fast);
}

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

/* ============================================
   页面头部 (Page Header)
   ============================================ */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.page-header .title {
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.page-header .actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* ============================================
   卡片 (Card)
   ============================================ */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

.card-grid .card {
    margin-bottom: 0;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.card-header .title {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-text-primary);
}

.card-header .actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ============================================
   按钮 (Buttons)
   ============================================ */
.btn,
.page-header .actions button,
.card-header .actions button,
.modal-footer button,
.pagination button,
.filter-bar button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

.btn-primary,
.page-header .actions button.primary,
.card-header .actions button.primary,
.modal-footer button.primary,
.filter-bar button.primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    font-weight: 500;
}

.btn-primary:hover,
.page-header .actions button.primary:hover,
.card-header .actions button.primary:hover,
.modal-footer button.primary:hover,
.filter-bar button.primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: #fff;
}

.btn-primary:active,
.page-header .actions button.primary:active,
.card-header .actions button.primary:active,
.modal-footer button.primary:active,
.filter-bar button.primary:active {
    background: var(--color-primary-active);
    border-color: var(--color-primary-active);
}

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

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

/* ============================================
   筛选栏 (Filter Bar)
   ============================================ */
.filter-bar {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end; /* 这一行让筛选栏整体靠右 */
}

/* 辅助文本 */
.text-muted {
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
}

.text-small {
    font-size: var(--font-size-xs);
}

/* 信息标签/值 */
.info-label {
    color: var(--color-text-disabled);
}

.info-value {
    font-weight: 500;
    color: var(--color-text-primary);
}

/* 进度条 */
.progress {
    width: 100%;
    height: 4px;
    background-color: var(--color-bg-base);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
}

.progress-bar {
    height: 100%;
    border-radius: var(--radius-sm);
    background-color: var(--color-primary);
    transition: width var(--transition-normal);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }

.filter-bar input,
.filter-bar select {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.filter-bar input:focus,
.filter-bar select:focus {
    border-color: var(--color-primary);
    outline: none;
}

/* ============================================
   表格 (Table)
   ============================================ */
.table-container {
    overflow-x: auto;
    width: 100%;
}

table {
    width: 100%;
    border-collapse: collapse;
    table-layout: auto;
}

thead tr {
    background: var(--color-bg-header);
}

th {
    padding: 10px 12px;
    text-align: left;
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--color-border-light);
    white-space: nowrap;
}

td {
    padding: 10px 12px;
    font-size: var(--font-size-xs);
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border-light);
    white-space: var(--transition-normal);
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: none;
}

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

.empty-cell {
    color: var(--color-text-disabled);
}

.amount-cell {
    font-weight: 500;
    color: var(--color-primary);
}

/* ============================================
   操作链接 (Action Links)
   ============================================ */
.action-link {
    color: var(--color-primary);
    cursor: pointer;
    margin-right: 16px;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.action-link:hover {
    color: var(--color-primary-hover);
    text-decoration: none;
}

.action-link.delete {
    color: var(--color-error);
}

.action-link.delete:hover {
    color: var(--color-danger);
}

/* 表格操作按钮 */
.btn-sm {
    padding: 3px 9px;
    font-size: calc(var(--font-size-sm) * 0.9);
    border-radius: var(--radius-sm);
    transform: scale(0.9);
}

/* 无色按钮（查看） */
.btn-action {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    margin-right: 8px;
}

.btn-action:hover,
.btn-action:active {
    background: var(--color-bg-hover);
    border-color: var(--color-border);
    color: var(--color-text-primary);
}

/* 蓝色按钮（签署） - 参考 .btn-primary 实心样式 */
.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    margin-right: 8px;
}

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

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

/* 红色按钮（删除） */
.btn-danger {
    background: var(--color-error);
    color: #fff;
    border-color: var(--color-error);
}

.btn-danger:hover {
    background: var(--color-danger);
    border-color: var(--color-danger);
    color: #fff;
}

.btn-danger:active {
    background: #a01010;
    border-color: #a01010;
    color: #fff;
}

/* ============================================
   状态标签 (Status Tags)
   ============================================ */
.status {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.status-active {
    background: #e6f7ff;
    color: var(--color-primary);
}

.status-expired {
    background: #fff2e6;
    color: #ff6a00;
}

.status-completed {
    background: #f0f9ff;
    color: var(--color-success);
}

.status-pending {
    background: #fff7e6;
    color: var(--color-warning);
}

.contract-type {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    background: var(--color-bg-header);
    color: var(--color-text-secondary);
}

/* ============================================
   标签页 (Tabs)
   ============================================ */
.tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--spacing-xl);
    background: var(--color-bg-card);
    padding: 0 var(--spacing-xl);
    flex-wrap: wrap;
}

.tabs .tab {
    padding: 12px 16px;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.tabs .tab:hover {
    color: var(--color-primary);
    background: var(--color-bg-hover);
}

.tabs .tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content .tab-pane {
    display: none;
}

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

/* ============================================
   模态框 (Modal)
   ============================================ */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg-mask);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl);
    backdrop-filter: blur(2px);
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: translateY(-24px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-header {
    padding: var(--spacing-xl) var(--spacing-2xl);
    border-bottom: 1px solid var(--color-border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header .modal-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.modal-header .modal-close {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--color-text-placeholder);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modal-header .modal-close:hover {
    background: var(--color-bg-header);
    color: var(--color-text-primary);
}

.modal-body {
    padding: var(--spacing-2xl);
    max-height: 70vh;
    overflow-y: auto;
}

.modal-body-lg {
    padding: var(--spacing-xl);
    max-height: calc(100vh - 140px);
    overflow-y: auto;
}

.modal-footer {
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-top: 1px solid var(--color-border-light);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* ============================================
   分页 (Pagination)
   ============================================ */
.pagination {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-top: var(--spacing-xl);
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.pagination button {
    padding: 6px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.pagination button:hover:not(:disabled) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination button:disabled {
    color: var(--color-text-disabled);
    background: var(--color-bg-base);
    cursor: not-allowed;
}

.pagination .page-numbers {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.pagination .page-numbers span {
    padding: 6px 16px;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.pagination .page-numbers span:hover:not(.current) {
    border-color: var(--color-border);
}

.pagination .page-numbers span.current {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ============================================
   表单 (Form)
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-xl);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text-primary);
}

.form-group .required {
    color: var(--color-error);
    margin-left: var(--spacing-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    outline: none;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.1);
}

.form-group input:read-only,
.form-group select:disabled,
.form-group textarea:read-only {
    background-color: var(--color-bg-header);
    color: var(--color-text-primary);
    cursor: default;
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

.form-row {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

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

.form-row .form-group:only-child {
    flex: 1 1 100%;
}

/* ============================================
   面包屑 (Breadcrumb)
   ============================================ */
.breadcrumb {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.breadcrumb a {
    color: var(--color-primary);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* ============================================
   动画 (Animation)
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fadeIn {
    animation: fadeIn 0.3s ease-in-out;
}

/* ============================================
   通用工具类 (Utilities)
   ============================================ */
.min-width-800 { min-width: 800px; }
.min-width-1200 { min-width: 1200px; }
.min-width-1400 { min-width: 1400px; }

.text-center { text-align: center; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* ============================================
   响应式断点 (Responsive)
   ============================================ */
@media (max-width: 1024px) {
    .content { padding: var(--spacing-lg); }
    .page-header { flex-direction: column; align-items: flex-start; gap: var(--spacing-lg); }
    .page-header .actions { width: 100%; flex-wrap: wrap; }
    .tabs { overflow-x: auto; white-space: nowrap; padding: 0 var(--spacing-lg); }
    .filter-bar { flex-direction: column; gap: var(--spacing-md); }
    .filter-bar input, .filter-bar select { width: 100%; }
    .modal-content { width: 95%; max-height: 85vh; margin: 10px; }
    .form-row { flex-direction: column; gap: var(--spacing-lg); }
    .table-container { overflow-x: auto; }
    table { min-width: 800px; }
    .card { padding: var(--spacing-lg); }
}

@media (max-width: 768px) {
    .content { padding: 10px; }
    .page-header .title { font-size: var(--font-size-lg); }
    .page-header .actions button { font-size: var(--font-size-sm); padding: 8px 12px; }
    .tabs .tab { padding: 10px 12px; font-size: var(--font-size-sm); }
    .modal-content { width: 100%; max-height: 90vh; margin: 0; border-radius: 0; }
    .modal-body { padding: var(--spacing-lg); }
    .modal-footer { padding: var(--spacing-md) var(--spacing-lg); flex-direction: column; gap: var(--spacing-sm); }
    .card-header { flex-direction: column; align-items: flex-start; gap: var(--spacing-lg); }
    .card-header .actions { width: 100%; flex-wrap: wrap; }
}

@media (max-width: 480px) {
    .content { padding: var(--spacing-sm); }
    .page-header .title { font-size: var(--font-size-base); }
    .card { padding: var(--spacing-sm); }
    th, td { padding: 8px 10px; font-size: 11px; }
    .status, .contract-type { font-size: 11px; padding: 1px 6px; }
    .form-group label { font-size: var(--font-size-sm); }
    .form-group input, .form-group select, .form-group textarea { font-size: var(--font-size-sm); }
}

/* ============================================
   业务表格 (Business Table)
   ============================================ */
.business-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: auto;
}

.business-table th,
.business-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 300px;
}

.business-table th {
    background: var(--color-bg-header);
    font-weight: 600;
    color: var(--color-text-primary);
    position: sticky;
    top: 0;
    z-index: 1;
}

/* 表格类名别名 */
.payment-table,
.contract-table,
.invoice-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: auto;
}

.payment-table th, .payment-table td,
.contract-table th, .contract-table td,
.invoice-table th, .invoice-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.payment-table th,
.contract-table th,
.invoice-table th {
    background: var(--color-bg-header);
    font-weight: 600;
    color: var(--color-text-primary);
}

.payment-table tbody tr:hover,
.contract-table tbody tr:hover,
.invoice-table tbody tr:hover {
    background: var(--color-bg-hover);
}

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

/* 表格行过渡动画 */
.business-table tbody tr,
.payment-table tbody tr,
.contract-table tbody tr,
.invoice-table tbody tr {
    transition: background-color 0.2s ease;
}

/* 表格操作列优化 */
.business-table td:last-child,
.payment-table td:last-child,
.contract-table td:last-child,
.invoice-table td:last-child {
    white-space: normal;
    min-width: 150px;
}

/* 表格状态标签 */
.status {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.status-active {
    background-color: #e6f7ff;
    color: #0066cc;
    border: 1px solid #91d5ff;
}

.status-expired,
.status-inactive {
    background-color: #fff1f0;
    color: #cf1322;
    border: 1px solid #ffa39e;
}

.status-completed {
    background-color: #f6ffed;
    color: #00b42a;
    border: 1px solid #b7eb8f;
}

.status-default {
    background-color: #fafafa;
    color: #666;
    border: 1px solid #d9d9d9;
    margin-left: 4px;
}

/* 表格操作链接 */
.action-link {
    color: var(--color-primary);
    cursor: pointer;
    margin-right: 8px;
    text-decoration: none;
}

.action-link:hover {
    text-decoration: underline;
}

.action-link.delete {
    color: var(--color-error);
}

.action-link.delete:hover {
    text-decoration: underline;
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    padding: 4px 12px;
    background: #fff;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
}

.dropdown-toggle:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.dropdown-menu {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    min-width: 120px;
    background: #fff;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    margin-top: 4px;
}

.dropdown-menu a {
    display: block;
    padding: 8px 12px;
    color: #333;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s;
}

.dropdown-menu a:hover {
    background-color: #f5f5f5;
}

.dropdown-menu a.danger {
    color: var(--color-error);
}

.dropdown-menu a.danger:hover {
    background-color: #fff1f0;
}

.dropdown:hover .dropdown-menu {
    display: block;
}

/* 响应式表格 - 移动端适配 */
@media (max-width: 768px) {
    .business-table,
    .payment-table,
    .contract-table,
    .invoice-table {
        font-size: 12px;
    }
    
    .business-table th,
    .payment-table th,
    .contract-table th,
    .invoice-table th {
        padding: 6px 8px;
    }
    
    .business-table td,
    .payment-table td,
    .contract-table td,
    .invoice-table td {
        padding: 6px 8px;
    }
    
    /* 移动端隐藏不重要的列 */
    .business-table .hide-mobile,
    .payment-table .hide-mobile,
    .contract-table .hide-mobile,
    .invoice-table .hide-mobile {
        display: none;
    }
}

/* ============================================
   PDF导入区域 (PDF Drop Zone)
   ============================================ */
.pdf-drop-zone {
    text-align: center;
    padding: 40px 20px;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pdf-drop-zone:hover,
.pdf-drop-zone-dragover {
    border-color: var(--color-primary);
    background: var(--color-bg-hover);
}

.pdf-drop-zone-dragover {
    background: rgba(0, 102, 204, 0.05);
    border-color: var(--color-primary);
    transform: scale(1.02);
}

.pdf-icon {
    font-size: 48px;
    color: var(--color-text-placeholder);
}

.pdf-text {
    margin-top: var(--spacing-sm);
    color: var(--color-text-secondary);
}

.pdf-subtext {
    margin-top: var(--spacing-xs);
    color: var(--color-text-placeholder);
    font-size: var(--font-size-xs);
}

.pdf-file-name {
    margin-top: var(--spacing-md);
    text-align: center;
    color: var(--color-text-secondary);
}

.pdf-progress {
    margin-top: var(--spacing-md);
    display: none;
    text-align: center;
    color: var(--color-text-secondary);
}

/* ============================================
   模板变量标签 (Variable Tags)
   ============================================ */
.var-section {
    margin-bottom: var(--spacing-lg);
}

.var-section-title {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.var-section-subtitle {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.var-section-subtitle-success {
    color: var(--color-success);
}

.var-section-subtitle-warning {
    color: #faad14;
}

.var-count {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-weight: normal;
}

.var-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.var-tag {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
}

.var-tag-mapped {
    background: #d4edda;
    color: var(--color-success);
}

.var-tag-unmapped {
    background: #fff2cc;
    color: #856404;
}

/* ============================================
   附件样式 (Attachment)
   ============================================ */
.attachment-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--color-bg-header);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

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

.attachment-info {
    flex: 1;
}

.attachment-name {
    font-weight: 500;
    color: var(--color-text-primary);
}

.attachment-size {
    font-size: var(--font-size-xs);
    color: var(--color-text-disabled);
    margin-top: var(--spacing-xs);
}

.attachment-btn {
    display: inline-block;
    padding: 6px 12px;
    color: white;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    margin-right: var(--spacing-sm);
    cursor: pointer;
    border: none;
}

.attachment-btn:hover {
    opacity: 0.9;
    text-decoration: none;
}

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

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

.attachment-empty {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--color-text-disabled);
    background: var(--color-bg-base);
    border-radius: var(--radius-md);
}

.attachment-arrow {
    color: var(--color-text-disabled);
    font-size: 20px;
}

/* ============================================
   Toast 提示组件 (Toast Notifications)
   ============================================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.toast {
    min-width: 300px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: slideInRight 0.3s ease;
    font-size: var(--font-size-base);
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}

.toast-info {
    background: #e6f7ff;
    border: 1px solid #91d5ff;
    color: var(--color-primary);
}

.toast-success {
    background: #f6ffed;
    border: 1px solid #b7eb8f;
    color: var(--color-success);
}

.toast-warning {
    background: #fffbe6;
    border: 1px solid #ffe58f;
    color: #faad14;
}

.toast-error {
    background: #fff1f0;
    border: 1px solid #ffa39e;
    color: var(--color-error);
}

.toast-close {
    margin-left: var(--spacing-md);
    cursor: pointer;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
    font-size: 18px;
    line-height: 1;
}

.toast-close:hover {
    opacity: 1;
}

/* ============================================
   Loading 加载组件 (Loading)
   ============================================ */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg-mask);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9998;
    backdrop-filter: blur(2px);
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    background: var(--color-bg-card);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
    min-width: 120px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-border-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

.loading-text {
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

/* 行内 Loading */
.loading-inline {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.loading-inline .spinner {
    width: 16px;
    height: 16px;
    border-width: 2px;
    margin: 0;
}

/* 按钮 Loading 状态 */
.btn.loading,
button.loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn.loading::after,
button.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
}

.btn-primary.loading::after {
    border-color: rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
}

/* ============================================
   骨架屏组件 (Skeleton)
   ============================================ */
.skeleton {
    background: linear-gradient(90deg, var(--color-bg-base) 25%, var(--color-border-light) 50%, var(--color-bg-base) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text {
    height: 16px;
    margin-bottom: var(--spacing-sm);
}

.skeleton-title {
    height: 24px;
    margin-bottom: var(--spacing-md);
}

.skeleton-subtitle {
    height: 20px;
    margin-bottom: var(--spacing-sm);
}

.skeleton-row {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.skeleton-cell {
    flex: 1;
    height: 32px;
}

.skeleton-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    flex-shrink: 0;
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    flex-shrink: 0;
}

.skeleton-image {
    width: 100%;
    height: 200px;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

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

.skeleton-table td {
    padding: var(--spacing-sm);
}

.skeleton-table .skeleton {
    height: 16px;
    margin-bottom: 0;
}

/* 卡片骨架屏 */
.skeleton-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-xl);
}

.skeleton-card-header {
    height: 24px;
    width: 60%;
    margin-bottom: var(--spacing-lg);
}

.skeleton-card-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* ============================================
   弹窗标题 (Modal Title)
   ============================================ */
.modal-title {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.section-title {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.section-title-lg {
    margin-top: var(--spacing-lg);
}

/* ============================================
   详情表格 (Detail Table)
   ============================================ */
.detail-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    table-layout: fixed;
}

.detail-table td {
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border-light);
    vertical-align: top;
    word-break: break-word;
}

.detail-table td:first-child {
    background: var(--color-bg-base);
    width: 18%;
    font-weight: 500;
    white-space: nowrap;
}

.detail-modal-content {
    padding: var(--spacing-md);
}

.detail-content {
    margin-top: var(--spacing-lg);
    border: 1px solid var(--color-border-light);
    padding: var(--spacing-sm);
    max-height: 400px;
    overflow: hidden; 
}

.detail-text {
    white-space: pre-wrap;
    line-height: 1.8;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    overflow-y: auto; 
}

.detail-textarea {
    display: none;
    width: 100%;
    min-height: 400px;
    padding: var(--spacing-sm);
    border: none;
    font-size: var(--font-size-sm);
    line-height: 1.8;
    resize:  none;
    font-family: inherit;
    color: var(--color-text-primary);
    outline: none;
}

/* ============================================
   附件上传列表 (Upload List)
   ============================================ */
.upload-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-base);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.upload-info {
    flex: 1;
    overflow: hidden;
}

.upload-name {
    font-weight: 500;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.upload-time {
    font-size: var(--font-size-xs);
    color: var(--color-text-disabled);
}

.upload-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* ========== 工具类 ========== */
.text-red { color: #ff4d4f; }
.text-green { color: #52c41a; }
.text-yellow { color: #faad14; }
.text-muted { color: #666; }
.text-light { color: #999; }
.font-bold { font-weight: 600; }
.font-normal { font-weight: normal; }
.font-12 { font-size: 12px; }
.font-13 { font-size: 13px; }
.font-14 { font-size: 14px; }

.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.flex-center { display: flex; align-items: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-start { display: flex; align-items: center; justify-content: flex-start; }
.gap-6 { gap: 6px; }
.gap-8 { gap: 8px; }

.mb-5 { margin-bottom: 5px; }
.mb-10 { margin-bottom: 10px; }
.ml-8 { margin-left: 8px; }
.p-20 { padding: 20px; }

.bg-light { background: #f5f5f5; }
.bg-green { background: #d4edda; }
.bg-yellow { background: #fff2cc; }

.badge-default {
    margin-left: 8px;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 12px;
    background: #f0f0f0;
    color: #333;
}
.badge-ml-8 { margin-left: 8px; }

.loading-text { text-align: center; }
.error-text { text-align: center; color: #ff4d4f; }
.empty-text { text-align: center; }

/* 删除操作 */
.action-delete { color: #ff4d4f; cursor: pointer; }
.text-error { color: #ff4d4f; }

/* 打印预览 */
.print-preview { padding: 20px; }
.print-table { width: 100%; border: 1px solid #e8e8e8; font-size: 14px; }
.print-td-label { padding: 8px; background: #f5f5f5; width: 120px; }
.print-td-value { padding: 8px; }
.print-content { margin-top: 10px; border: 1px solid #e8e8e8; padding: 8px; }
.print-content-display { white-space: pre-wrap; line-height: 1.8; font-size: 14px; color: #999; }
.print-content-edit { display: none; width: 100%; min-height: 400px; padding: 8px; border: none; font-size: 14px; line-height: 1.8; resize: vertical; font-family: inherit; color: #333; outline: none; }
.print-h3 { margin-top: 20px; }

/* 附件列表 */
.attachment-empty { color: #999; font-size: 14px; }
.attachment-item { display: flex; align-items: center; justify-content: space-between; padding: 10px; background: #f5f5f5; border-radius: 4px; margin-bottom: 8px; }
.attachment-info { flex: 1; overflow: hidden; }
.attachment-name { font-weight: 500; color: #333; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.attachment-time { font-size: 12px; color: #999; }
.attachment-actions { display: flex; gap: 8px; }
.attachment-link { color: #0066cc; text-decoration: none; }
.attachment-delete { color: #ff4d4f; cursor: pointer; }

/* ========== 打印样式 ========== */
@media print {
    @page {
        margin: 2.54cm 3.17cm;
        size: auto;
    }
}

.upload-link {
    color: var(--color-primary);
    text-decoration: none;
    cursor: pointer;
}

.upload-link:hover {
    text-decoration: underline;
}

.upload-link-delete {
    color: var(--color-error);
    cursor: pointer;
}

/* ============================================
   状态标签变体 (Status Variants)
   ============================================ */
.status-default {
    margin-left: var(--spacing-sm);
}

/* ============================================
   附件容器 (Attachment Container)
   ============================================ */
.attachment-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border-light);
}

.attachment-card {
    background: var(--color-bg-base);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.attachment-error {
    color: var(--color-error);
}

.attachment-clickable {
    cursor: pointer;
}

/* 变量面板 */
.var-panel-title { color: #333; }
.var-badge { padding: 2px 8px; border-radius: 3px; }
.var-badge-mapped { color: #333; }
.var-badge-unmapped { color: #856404; }