/* 全局变量和基础配置 */
:root {
  --da-primary: #1e40af;       /* 深蓝/靛蓝 - 主色调 */
  --da-primary-hover: #1e3a8a;
  --da-primary-light: #eff6ff;
  --da-secondary: #0891b2;     /* 青色/蓝绿 - 辅色调 */
  
  --da-success: #10b981;
  --da-warning: #f59e0b;
  --da-danger: #ef4444;
  --da-info: #3b82f6;
  
  --da-bg-base: #f3f4f6;
  --da-bg-card: #ffffff;
  --da-border: #e5e7eb;
  
  --da-text-main: #111827;
  --da-text-regular: #374151;
  --da-text-secondary: #6b7280;
  
  --da-sidebar-width: 240px;
  --da-header-height: 60px;
  
  --da-radius: 6px;
  --da-radius-lg: 10px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  background-color: var(--da-bg-base);
  color: var(--da-text-regular);
  margin: 0;
  padding: 0;
  font-size: 14px;
}

/* ================= 布局组件 ================= */
.da-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* 侧边栏 */
.da-sidebar {
  width: var(--da-sidebar-width);
  background-color: #111827;
  color: #fff;
  display: flex;
  flex-direction: column;
  transition: width 0.3s;
  z-index: 10;
}

.da-logo {
  height: var(--da-header-height);
  display: flex;
  align-items: center;
  padding: 0 20px;
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.da-logo i {
  color: #60a5fa;
  margin-right: 10px;
  font-size: 20px;
}

.da-menu {
  flex: 1;
  overflow-y: auto;
  padding: 10px 0;
}

.da-menu-group {
  margin-bottom: 15px;
}

.da-menu-title {
  padding: 0 20px;
  font-size: 12px;
  color: #9ca3af;
  margin-bottom: 5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.da-menu-item {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  color: #d1d5db;
  text-decoration: none;
  transition: all 0.2s;
}

.da-menu-item:hover {
  background-color: rgba(255,255,255,0.05);
  color: #fff;
}

.da-menu-item.active {
  background-color: var(--da-primary);
  color: #fff;
  border-left: 3px solid #60a5fa;
}

.da-menu-item i {
  width: 24px;
  font-size: 16px;
  margin-right: 8px;
  text-align: center;
}

/* 主内容区 */
.da-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.da-sidebar-user {
  margin-top: auto;
  padding: 16px;
  border-top: 1px solid rgba(255,255,255,0.1);
  background-color: rgba(255,255,255,0.02);
}

.da-sidebar-user-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.da-sidebar-user-text {
  min-width: 0;
  flex: 1;
}

.da-sidebar-user-meta .da-avatar {
  margin-right: 0;
  flex-shrink: 0;
}

.da-sidebar-user-name {
  color: #fff;
  font-weight: 600;
  line-height: 1.2;
}

.da-sidebar-user-roles {
  margin-top: 4px;
  color: #9ca3af;
  font-size: 12px;
}

.da-sidebar-logout {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fca5a5;
  text-decoration: none;
  flex-shrink: 0;
  transition: all 0.2s;
}

.da-sidebar-logout:hover {
  background-color: rgba(239,68,68,0.12);
  color: #fecaca;
}

/* 顶部导航栏 */
.da-header {
  height: var(--da-header-height);
  background-color: #fff;
  border-bottom: 1px solid var(--da-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 5;
}

.da-header-left {
  display: flex;
  align-items: center;
}

.da-header-right {
  display: flex;
  align-items: center;
  gap: 15px;
}

.da-user-dropdown {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: 5px 10px;
  border-radius: var(--da-radius);
}

.da-user-dropdown:hover {
  background-color: var(--da-bg-base);
}

.da-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--da-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 8px;
  font-weight: 600;
}

/* 页面内容 */
.da-content {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

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

.da-page-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--da-text-main);
  margin: 0;
}

.da-breadcrumb {
  display: flex;
  font-size: 13px;
  color: var(--da-text-secondary);
  margin-top: 5px;
}

.da-breadcrumb-item {
  display: flex;
  align-items: center;
}

.da-breadcrumb-item:not(:last-child)::after {
  content: "/";
  margin: 0 8px;
  color: #d1d5db;
}

.da-breadcrumb-item.active {
  color: var(--da-text-regular);
}

/* ================= 通用 UI 组件 ================= */

/* 卡片 */
.da-card {
  background-color: var(--da-bg-card);
  border-radius: var(--da-radius);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  border: 1px solid var(--da-border);
  margin-bottom: 20px;
}

.da-card-header {
  padding: 15px 20px;
  border-bottom: 1px solid var(--da-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.da-card-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  color: var(--da-text-main);
  display: flex;
  align-items: center;
}

.da-card-title i {
  margin-right: 8px;
  color: var(--da-text-secondary);
}

.da-card-body {
  padding: 20px;
}

.da-card-footer {
  padding: 15px 20px;
  border-top: 1px solid var(--da-border);
  background-color: #f9fafb;
  border-bottom-left-radius: var(--da-radius);
  border-bottom-right-radius: var(--da-radius);
}

/* 状态标签 (Tag) */
.da-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
}

.da-tag-draft { background-color: #f3f4f6; color: #4b5563; border: 1px solid #d1d5db; }
.da-tag-pending-review { background-color: #fff7ed; color: #c2410c; border: 1px solid #fdba74; }
.da-tag-pending-issue { background-color: #eff6ff; color: #1d4ed8; border: 1px solid #93c5fd; }
.da-tag-approved { background-color: #f0fdf4; color: #15803d; border: 1px solid #86efac; }
.da-tag-esign-progress { background-color: #fefce8; color: #a16207; border: 1px solid #fde047; }
.da-tag-esign-completed { background-color: #ecfdf5; color: #047857; border: 1px solid #6ee7b7; }
.da-tag-rejected { background-color: #fef2f2; color: #b91c1c; border: 1px solid #fca5a5; }

/* 按钮扩展 */
.btn-primary {
  background-color: var(--da-primary);
  border-color: var(--da-primary);
}
.btn-primary:hover {
  background-color: var(--da-primary-hover);
  border-color: var(--da-primary-hover);
}
.btn-outline-primary {
  color: var(--da-primary);
  border-color: var(--da-primary);
}
.btn-outline-primary:hover {
  background-color: var(--da-primary);
  color: #fff;
}

/* 表格扩展 */
.table {
  color: var(--da-text-regular);
}
.table th {
  background-color: #f9fafb;
  color: var(--da-text-secondary);
  font-weight: 600;
  border-top: none;
  font-size: 13px;
  text-transform: uppercase;
  padding-left: 20px;
  padding-right: 20px;
}
.table td {
  vertical-align: middle;
  padding-left: 20px;
  padding-right: 20px;
}

/* 步骤条 */
.da-steps {
  display: flex;
  justify-content: space-between;
  margin-bottom: 30px;
  position: relative;
}
.da-steps::before {
  content: "";
  position: absolute;
  top: 15px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--da-border);
  z-index: 1;
}
.da-step {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
}
.da-step-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: #fff;
  border: 2px solid var(--da-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--da-text-secondary);
  margin-bottom: 8px;
}
.da-step.active .da-step-icon {
  border-color: var(--da-primary);
  background-color: var(--da-primary);
  color: #fff;
}
.da-step.completed .da-step-icon {
  border-color: var(--da-success);
  background-color: var(--da-success);
  color: #fff;
}
.da-step-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--da-text-secondary);
}
.da-step.active .da-step-title {
  color: var(--da-primary);
  font-weight: 600;
}

/* 分页 */
.pagination {
  gap: 8px;
}
.pagination .page-item {
  margin: 0;
}
.pagination .page-link {
  min-width: 38px;
  height: 38px;
  padding: 0 12px;
  border-radius: 10px;
  border: 1px solid var(--da-border);
  color: var(--da-text-regular);
  background-color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition: all 0.2s ease;
}
.pagination .page-link:hover {
  color: var(--da-primary);
  border-color: rgba(30, 64, 175, 0.22);
  background-color: var(--da-primary-light);
}
.pagination .page-item.active .page-link {
  color: #fff;
  background-color: var(--da-primary);
  border-color: var(--da-primary);
  box-shadow: 0 8px 20px rgba(30, 64, 175, 0.2);
}
.pagination .page-item.disabled .page-link {
  color: #9ca3af;
  background-color: #f9fafb;
  border-color: var(--da-border);
}

/* 模态框 */
.modal-backdrop.show {
  opacity: 0.32;
}
.modal-content {
  border: 0;
  border-radius: 16px;
  box-shadow: 0 24px 80px rgba(15, 23, 42, 0.22);
  overflow: hidden;
}
.modal-header,
.modal-footer {
  border-color: #eef2f7;
}
.modal-header {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}
.modal-title {
  font-weight: 700;
  color: var(--da-text-main);
}
.modal-body {
  background-color: #fff;
}

/* 浮动筛选与选择器 */
.da-toolbar-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.da-item-picker {
  max-height: 360px;
  overflow-y: auto;
  border: 1px solid var(--da-border);
  border-radius: 12px;
  background-color: #f8fafc;
  padding: 12px;
}
.da-item-option {
  background-color: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 12px 14px;
  height: 100%;
}
.da-item-option .form-check {
  margin: 0;
}
.da-item-option .form-check-label {
  width: 100%;
  cursor: pointer;
}
.da-item-option-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}
.da-item-option-name {
  font-weight: 600;
  color: var(--da-text-main);
}
.da-item-option-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: var(--da-text-secondary);
}
.da-item-option-meta span {
  background-color: #f3f4f6;
  border-radius: 999px;
  padding: 2px 8px;
}
.da-help-text {
  font-size: 12px;
  color: var(--da-text-secondary);
}