/* ============================================
   全局设计系统 - 20年UI设计经验优化
   ============================================ */

/* 字体系统优化 - 使用思源黑体 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;600;700&display=swap');

body.main-shell,
body,
body.app-screen {
  font-family: "Noto Sans SC", "Source Han Sans SC", "Source Han Sans", "思源黑体", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  letter-spacing: var(--letter-spacing-normal);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
}

/* 统一字体工具类 - 精致统一的字号和字重 */
.ipad-text-xs {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-normal);
  line-height: 1.5;
  letter-spacing: var(--letter-spacing-normal);
}

.ipad-text-sm {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  letter-spacing: var(--letter-spacing-normal);
}

.ipad-text-base {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  letter-spacing: var(--letter-spacing-normal);
}

.ipad-text-md {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  letter-spacing: var(--letter-spacing-normal);
}

.ipad-text-lg {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  line-height: 1.4;
  letter-spacing: var(--letter-spacing-tight);
}

.ipad-text-xl {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: 1.3;
  letter-spacing: var(--letter-spacing-tight);
}

.ipad-text-2xl {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  line-height: 1.25;
  letter-spacing: var(--letter-spacing-tight);
}

.ipad-text-3xl {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  letter-spacing: var(--letter-spacing-tight);
}

/* 字重工具类 */
.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* 外层预览页（index.html）整体背景与排版 */
body.main-shell {
  background: linear-gradient(135deg, #E8F0FF 0%, #F0E6FF 50%, #FFF7E6 100%);
  margin: 0;
  padding: 1.5rem;
}

/* iPad Air 11寸横屏优化 */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 单个 App 屏幕（各业务页面 iframe 中使用） */
body.app-screen {
  margin: 0;
  background: linear-gradient(135deg, #F0F7FF 0%, #E8F0FF 50%, #F5F9FC 100%);
  color: #111827;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   设计令牌 (Design Tokens)
   ============================================ */

:root {
  /* 颜色系统 - 基于图片的柔和蓝色主题 */
  --color-primary: #2560FF;
  --color-primary-hover: #1E4FE6;
  --color-primary-light: #E8F0FF;
  --color-primary-gradient: linear-gradient(135deg, #4A7AFF 0%, #2560FF 100%);
  --color-success: #52C41A;
  --color-success-light: #F6FFED;
  --color-warning: #FAAD14;
  --color-warning-light: #FFFBE6;
  --color-danger: #FF4D4F;
  --color-danger-light: #FFF1F0;
  --color-info: #2560FF;
  --color-info-light: #E8F0FF;
  
  /* 渐变系统 - 卡片渐变背景 */
  --gradient-card-blue: linear-gradient(135deg, #E8F0FF 0%, #F0E6FF 100%);
  --gradient-card-green: linear-gradient(135deg, #F6FFED 0%, #E6F7FF 100%);
  --gradient-card-purple: linear-gradient(135deg, #F0E6FF 0%, #FFE6F0 100%);
  --gradient-card-orange: linear-gradient(135deg, #FFF7E6 0%, #FFE6F0 100%);
  --gradient-button: linear-gradient(135deg, #2560FF 0%, #1E4FE6 100%);
  
  /* 中性色 - 更柔和、更干净的层次 */
  --color-gray-50: #FAFBFC;
  --color-gray-100: #F5F7FA;
  --color-gray-200: #E8ECF0;
  --color-gray-300: #D1D9E0;
  --color-gray-400: #A8B5C1;
  --color-gray-500: #6B7C8F;
  --color-gray-600: #4A5568;
  --color-gray-700: #2D3748;
  --color-gray-800: #1A202C;
  --color-gray-900: #0D1117;
  
  /* 背景色 - 更干净的浅色背景 */
  --bg-primary: #FAFBFC;
  --bg-secondary: #FFFFFF;
  --bg-card: #FFFFFF;
  
  /* 间距系统 - 8px基准 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* 圆角系统 - 更大的圆角，更柔和 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-3xl: 32px;
  --radius-full: 9999px;
  
  /* 阴影系统 - 更柔和、更轻的阴影 */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 8px 0 rgba(0, 0, 0, 0.06), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 4px 16px 0 rgba(0, 0, 0, 0.08), 0 2px 4px 0 rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 8px 24px 0 rgba(0, 0, 0, 0.1), 0 4px 8px 0 rgba(0, 0, 0, 0.06);
  --shadow-card: 0 2px 12px 0 rgba(37, 96, 255, 0.08);
  
  /* 过渡动画 */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* 行高优化 */
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* 字体系统 - 统一字号和字重 */
  /* 字号系统（基于 iPad 11寸优化） */
  --font-size-xs: 11px;      /* 辅助信息、标签 */
  --font-size-sm: 13px;      /* 次要文本、说明 */
  --font-size-base: 15px;    /* 正文、默认 */
  --font-size-md: 17px;      /* 重要文本、按钮 */
  --font-size-lg: 19px;      /* 小标题 */
  --font-size-xl: 22px;      /* 中标题 */
  --font-size-2xl: 26px;     /* 大标题 */
  --font-size-3xl: 30px;     /* 特大标题 */
  
  /* 字重系统（更精致统一） */
  --font-weight-light: 300;      /* 轻量文本 */
  --font-weight-normal: 400;     /* 常规文本 */
  --font-weight-medium: 500;     /* 中等强调 */
  --font-weight-semibold: 600;   /* 半粗体（用于标题、重要信息） */
  --font-weight-bold: 700;        /* 粗体（用于主标题） */
  
  /* 字间距优化 */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: -0.01em;
  --letter-spacing-wide: 0.01em;
  --letter-spacing-wider: 0.02em;
}

/* ============================================
   通用组件样式优化
   ============================================ */

/* 卡片优化 - 基于图片的柔和渐变风格 */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--color-gray-200);
}

.card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.card-elevated {
  box-shadow: var(--shadow-lg);
}

/* 渐变卡片样式 */
.card-gradient-blue {
  background: var(--gradient-card-blue);
  border: 1px solid rgba(37, 96, 255, 0.5);
}

.card-gradient-green {
  background: var(--gradient-card-green);
  border: 1px solid rgba(82, 196, 26, 0.1);
}

.card-gradient-purple {
  background: var(--gradient-card-purple);
  border: 1px solid rgba(160, 120, 240, 0.1);
}

.card-gradient-orange {
  background: var(--gradient-card-orange);
  border: 1px solid rgba(250, 173, 20, 0.1);
}

/* 按钮优化 - 使用渐变和柔和阴影 */
.btn {
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-normal);
  transition: all var(--transition-base);
  border-radius: var(--radius-lg);
  padding: 12px 24px;
  font-size: var(--font-size-md);
  line-height: 1.5;
  background: var(--gradient-button);
  color: white;
  border: none;
  box-shadow: 0 2px 8px rgba(37, 96, 255, 0.2);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 96, 255, 0.3);
  background: linear-gradient(135deg, #1E4FE6 0%, #1A4AD9 100%);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(37, 96, 255, 0.2);
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn-secondary {
  background: white;
  color: var(--color-primary);
  border: 1.5px solid var(--color-gray-200);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-gray-50);
  border-color: rgba(37, 96, 255, 0.5);
  box-shadow: var(--shadow-md);
}

/* 输入框优化 - 更柔和的边框和焦点状态 */
.input {
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-gray-200);
  padding: 12px 16px;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.5;
  transition: all var(--transition-base);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  letter-spacing: var(--letter-spacing-normal);
}

.input:focus {
  border-color: rgba(37, 96, 255, 0.5);
  box-shadow: 0 0 0 3px rgba(37, 96, 255, 0.1);
  outline: none;
  background: white;
}

.input:hover:not(:disabled) {
  border-color: var(--color-gray-300);
  box-shadow: var(--shadow-sm);
}

/* 标签优化 */
.label {
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
  font-size: var(--font-size-sm);
  margin-bottom: 6px;
  display: block;
  letter-spacing: var(--letter-spacing-normal);
}

/* 渐变背景工具类 */
.bg-gradient-primary {
  background: var(--gradient-button);
}

.bg-gradient-card-blue {
  background: var(--gradient-card-blue);
}

.bg-gradient-card-green {
  background: var(--gradient-card-green);
}

.bg-gradient-card-purple {
  background: var(--gradient-card-purple);
}

.bg-gradient-card-orange {
  background: var(--gradient-card-orange);
}

/* 柔和的阴影工具类 */
.shadow-soft {
  box-shadow: var(--shadow-sm);
}

.shadow-soft-md {
  box-shadow: var(--shadow-md);
}

.shadow-soft-lg {
  box-shadow: var(--shadow-lg);
}

.shadow-card {
  box-shadow: var(--shadow-card);
}

/* 徽章优化 */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-normal);
  line-height: 1.4;
}

/* 分隔线优化 */
.divider {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: var(--spacing-lg) 0;
}

/* 工具提示优化 */
.tooltip {
  position: relative;
}

.tooltip:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 12px;
  background: var(--color-gray-900);
  color: white;
  border-radius: var(--radius-md);
  font-size: 12px;
  white-space: nowrap;
  margin-bottom: 8px;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
}

/* iPad外壳样式（保留用于其他用途） */
.tablet-shell {
  position: relative;
  border-radius: 36px;
  background: linear-gradient(to bottom, #dbeafe, #bfdbfe);
  padding: 16px;
  box-shadow: 0 20px 50px rgba(59, 130, 246, 0.2), 0 8px 16px rgba(0, 0, 0, 0.1);
  border: 2px solid rgba(147, 197, 253, 0.6);
  max-width: 800px;
  margin: 0 auto;
}

.tablet-screen {
  border-radius: 24px;
  overflow: hidden;
  background: #ffffff;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
  aspect-ratio: 4 / 3;
}

.tablet-shell::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 50%;
  width: 60px;
  height: 6px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.2);
  transform: translateX(-50%);
}

.tablet-shell::after {
  content: "";
  position: absolute;
  bottom: 10px;
  left: 50%;
  width: 80px;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(to right, #4A7AFF, #2560FF);
  opacity: 0.8;
  transform: translateX(-50%);
}

/* ============================================
   iPad Air 11寸真实外观增强
   ============================================ */

/* iPad外壳金属质感 */
.ipad-container {
  position: relative;
}

/* 添加环境光效果 */
.ipad-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 48px;
  background: 
    radial-gradient(ellipse at 30% 20%, rgba(255, 255, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 80%, rgba(0, 0, 0, 0.2) 0%, transparent 50%);
  pointer-events: none;
  z-index: 1;
}

/* 屏幕边框高光 */
.ipad-screen::after {
  content: "";
  position: absolute;
  top: -3px;
  left: -3px;
  right: -3px;
  bottom: -3px;
  border-radius: 20px;
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 30%,
    transparent 70%,
    rgba(0, 0, 0, 0.2) 100%
  );
  pointer-events: none;
  z-index: 1;
}

.iframe-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 1.5rem;
}

.iframe-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.iframe-label {
  color: #1f2937;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.iframe-label span {
  opacity: 0.75;
}

/* ============================================
   统一组件样式库 - UI 规范
   ============================================ */

/* 统一按钮样式 */
.omni-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-normal);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  box-shadow: var(--shadow-sm);
}

.omni-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.omni-btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.omni-btn-primary {
  background: var(--gradient-button);
  color: white;
  box-shadow: 0 2px 8px rgba(37, 96, 255, 0.2);
}

.omni-btn-primary:hover {
  background: linear-gradient(135deg, #1E4FE6 0%, #1A4AD9 100%);
  box-shadow: 0 4px 12px rgba(37, 96, 255, 0.3);
}

.omni-btn-secondary {
  background: white;
  color: var(--color-primary);
  border: 1.5px solid var(--color-gray-200);
}

.omni-btn-secondary:hover {
  background: var(--color-gray-50);
  border-color: var(--color-primary);
}

.omni-btn-success {
  background: linear-gradient(135deg, #22C55E 0%, #16A34A 100%);
  color: white;
  box-shadow: 0 2px 8px rgba(34, 197, 94, 0.2);
}

.omni-btn-success:hover {
  background: linear-gradient(135deg, #16A34A 0%, #15803D 100%);
  box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
}

.omni-btn-danger {
  background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
  color: white;
  box-shadow: 0 2px 8px rgba(239, 68, 68, 0.2);
}

.omni-btn-danger:hover {
  background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.omni-btn-sm {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
}

.omni-btn-lg {
  padding: 16px 32px;
  font-size: var(--font-size-md);
}

/* 统一卡片样式 */
.omni-card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-100);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.omni-card:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.omni-card-flat {
  box-shadow: none;
  border: 1px solid var(--color-gray-200);
}

.omni-card-elevated {
  box-shadow: var(--shadow-lg);
}

/* 统一表单输入框样式 */
.omni-input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.5;
  transition: all var(--transition-base);
  background: white;
}

.omni-input:hover:not(:disabled) {
  border-color: var(--color-gray-300);
}

.omni-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 96, 255, 0.1);
}

.omni-input:disabled {
  background: var(--color-gray-50);
  color: var(--color-gray-400);
  cursor: not-allowed;
}

.omni-input-error {
  border-color: var(--color-danger);
}

.omni-input-error:focus {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* 统一标签样式 */
.omni-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
  margin-bottom: 6px;
  letter-spacing: var(--letter-spacing-normal);
}

/* 统一选择框样式 */
.omni-select {
  width: 100%;
  padding: 12px 16px;
  padding-right: 40px;
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  background: white;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
  background-position: right 12px center;
  background-repeat: no-repeat;
  background-size: 20px;
  appearance: none;
  cursor: pointer;
  transition: all var(--transition-base);
}

.omni-select:hover:not(:disabled) {
  border-color: var(--color-gray-300);
}

.omni-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 96, 255, 0.1);
}

/* 统一文本域样式 */
.omni-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  line-height: 1.6;
  transition: all var(--transition-base);
  background: white;
  resize: vertical;
  min-height: 100px;
}

.omni-textarea:hover:not(:disabled) {
  border-color: var(--color-gray-300);
}

.omni-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 96, 255, 0.1);
}

/* 统一模态框样式 */
.omni-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow-y: auto;
}

.omni-modal {
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalSlideIn 0.2s ease-out;
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: translateY(-20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.omni-modal-header {
  padding: 24px;
  border-bottom: 1px solid var(--color-gray-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.omni-modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
}

.omni-modal-body {
  padding: 24px;
}

.omni-modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-gray-100);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* 统一表格样式 */
.omni-table {
  width: 100%;
  border-collapse: collapse;
}

.omni-table thead {
  background: var(--color-gray-50);
  border-bottom: 2px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: 10;
}

.omni-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.omni-table td {
  padding: 16px;
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
}

.omni-table tbody tr {
  transition: all var(--transition-fast);
}

.omni-table tbody tr:hover {
  background: var(--color-gray-50);
}

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

/* 统一徽章样式 */
.omni-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-normal);
  min-width: 20px;
  text-align: center;
}

.omni-badge-primary { background: var(--color-primary); color: white; }
.omni-badge-success { background: #10B981; color: white; }
.omni-badge-warning { background: #F59E0B; color: white; }
.omni-badge-danger { background: #EF4444; color: white; }
.omni-badge-gray { background: var(--color-gray-200); color: var(--color-gray-700); }

/* 统一状态标签 */
.omni-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.omni-status-success { background: #DCFCE7; color: #166534; }
.omni-status-warning { background: #FEF3C7; color: #92400E; }
.omni-status-error { background: #FEE2E2; color: #991B1B; }
.omni-status-info { background: #DBEAFE; color: #1E40AF; }
.omni-status-gray { background: var(--color-gray-100); color: var(--color-gray-700); }

/* 统一页面标题 */
.omni-page-header {
  margin-bottom: 24px;
}

.omni-page-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: 8px;
  letter-spacing: var(--letter-spacing-tight);
}

.omni-page-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  letter-spacing: var(--letter-spacing-normal);
}

/* 统一空状态 */
.omni-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 32px;
  text-align: center;
  color: var(--color-gray-500);
}

.omni-empty-state-icon {
  font-size: 48px;
  color: var(--color-gray-300);
  margin-bottom: 16px;
}

.omni-empty-state-text {
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  margin-top: 8px;
}

/* 统一加载动画 */
.omni-loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.omni-loading-lg {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

/* Toast 通知系统 */
#omniToastContainer {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.omni-toast {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  max-width: 400px;
  pointer-events: auto;
  animation: toastSlideIn 0.3s ease-out;
  border-left: 4px solid;
}

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

.omni-toast-success {
  border-left-color: #10B981;
  background: linear-gradient(to right, #ECFDF5 0%, white 15%);
}

.omni-toast-error {
  border-left-color: #EF4444;
  background: linear-gradient(to right, #FEF2F2 0%, white 15%);
}.omni-toast-warning {
  border-left-color: #F59E0B;
  background: linear-gradient(to right, #FFFBEB 0%, white 15%);
}

.omni-toast-info {
  border-left-color: var(--color-primary);
  background: linear-gradient(to right, #EFF6FF 0%, white 15%);
}

.omni-toast-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.omni-toast-content {
  flex: 1;
  font-size: var(--font-size-base);
  color: var(--color-gray-900);
  font-weight: var(--font-weight-medium);
}

.omni-toast-close {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-400);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.omni-toast-close:hover {
  color: var(--color-gray-600);
}

/* 统一提示卡片 */
.omni-alert {
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  border: 1.5px solid;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  transition: all var(--transition-base);
}

.omni-alert:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.omni-alert-success {
  background: #ECFDF5;
  border-color: #A7F3D0;
  color: #065F46;
}

.omni-alert-warning {
  background: #FFFBEB;
  border-color: #FDE68A;
  color: #92400E;
}

.omni-alert-error {
  background: #FEF2F2;
  border-color: #FECACA;
  color: #991B1B;
}

.omni-alert-info {
  background: #EFF6FF;
  border-color: #BFDBFE;
  color: #1E40AF;
}

.omni-alert-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

/* 统一分隔线 */
.omni-divider {
  height: 1px;
  background: var(--color-gray-200);
  border: none;
  margin: var(--spacing-lg) 0;
}

/* 统一图标容器 */
.omni-icon-wrapper {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.omni-icon-wrapper-sm { width: 32px; height: 32px; }
.omni-icon-wrapper-lg { width: 48px; height: 48px; border-radius: var(--radius-lg); }
.omni-icon-wrapper-xl { width: 56px; height: 56px; border-radius: var(--radius-xl); }

/* 统一悬浮提示 */
.omni-tooltip {
  position: relative;
  display: inline-block;
}

.omni-tooltip-text {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 12px;
  background: var(--color-gray-900);
  color: white;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  z-index: 1000;
  pointer-events: none;
  transition: all var(--transition-fast);
}

.omni-tooltip:hover .omni-tooltip-text {
  visibility: visible;
  opacity: 1;
}

/* 统一骨架屏 */
.omni-skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 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; }
}

/* 响应式优化 */
@media (max-width: 768px) {
  .omni-btn { padding: 10px 20px; font-size: var(--font-size-sm); }
  .omni-btn-lg { padding: 14px 28px; font-size: var(--font-size-base); }
  .omni-modal { max-width: 95vw; }
  .omni-page-title { font-size: var(--font-size-xl); }
}

/* 动画工具类 */
.animate-fade-in {
  animation: fadeIn 0.3s ease-out;
}

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

.animate-slide-up {
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   增强交互反馈
   ============================================ */

/* 按钮点击反馈 */
.omni-btn:active {
  transform: scale(0.98);
}

/* 卡片激活状态 */
.omni-card-active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 96, 255, 0.1), var(--shadow-md);
}

/* 输入框错误状态 */
.omni-input-error {
  animation: shake 0.3s;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* 加载覆盖层 */
.omni-loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
}

.omni-loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.omni-loading-text {
  font-size: var(--font-size-base);
  color: var(--color-gray-600);
  font-weight: var(--font-weight-medium);
}

/* 悬停发光效果 */
.omni-glow-on-hover:hover {
  box-shadow: 0 0 20px rgba(37, 96, 255, 0.3);
}

/* 脉冲动画 */
.omni-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}/* 渐入渐出动画 */
.omni-fade-in {
  animation: fadeIn 0.3s ease-out;
}

.omni-fade-out {
  animation: fadeOut 0.2s ease-in;
}

@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* 缩放动画 */
.omni-scale-in {
  animation: scaleIn 0.2s ease-out;
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

/* ============================================
   响应式布局优化
   ============================================ */

/* 平板横屏优化 (iPad Air 11寸) */
@media (min-width: 1024px) and (max-width: 1366px) {
  :root {
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-base: 15px;
    --font-size-md: 17px;
    --font-size-lg: 19px;
    --font-size-xl: 22px;
    --font-size-2xl: 26px;
  }
}

/* 小屏幕优化 */
@media (max-width: 768px) {
  :root {
    --font-size-xs: 10px;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
  }
  
  .omni-modal {
    max-width: 95vw;
    border-radius: var(--radius-lg);
  }
  
  .omni-btn {
    padding: 10px 20px;
  }
  
  .omni-btn-lg {
    padding: 12px 24px;
  }
  
  .omni-page-title {
    font-size: var(--font-size-xl);
  }
  
  .omni-modal-header,
  .omni-modal-body,
  .omni-modal-footer {
    padding: 16px;
  }
  
  #omniToastContainer {
    right: 12px;
    left: 12px;
    top: 12px;
  }
  
  .omni-toast {
    min-width: auto;
    max-width: 100%;
  }
}

/* 超大屏幕优化 */
@media (min-width: 1920px) {
  :root {
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-md: 18px;
    --font-size-lg: 20px;
    --font-size-xl: 24px;
    --font-size-2xl: 28px;
  }
}

/* ============================================
   打印样式优化
   ============================================ */

@media print {
  .omni-btn,
  .omni-modal-overlay,
  #omniToastContainer,
  .no-print {
    display: none !important;
  }
  
  .omni-card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
  
  body {
    background: white;
  }
}

/* ============================================
   可访问性优化
   ============================================ */

/* 键盘焦点可见性 */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* 减少动画（尊重用户偏好） */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
  .omni-card {
    border-width: 2px;
  }
  
  .omni-btn {
    border: 2px solid currentColor;
  }
  
  .omni-input {
    border-width: 2px;
  }
}