// 组件样式

// 按钮样式
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-size: 14px;
  
  &:hover {
    transform: translateY(-1px);
  }
  
  &.btn-primary {
    background: var(--primary-color);
    color: white;
    
    &:hover {
      background: #337ecc;
      box-shadow: 0 4px 12px rgba(64, 158, 255, 0.4);
    }
  }
  
  &.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    
    &:hover {
      background: var(--primary-color);
      color: white;
    }
  }
  
  &.btn-large {
    padding: 16px 32px;
    font-size: 16px;
  }
  
  &.btn-small {
    padding: 8px 16px;
    font-size: 12px;
  }
}

// 卡片样式
.card {
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow-light);
  transition: all 0.3s ease;
  
  &.card-hover {
    &:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-dark);
    }
  }
}

// 代码块样式
.code-block {
  background: #f8f9fa;
  border-radius: 8px;
  padding: 16px;
  margin: 16px 0;
  overflow-x: auto;
  
  pre {
    margin: 0;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 14px;
    line-height: 1.5;
    
    code {
      background: none;
      padding: 0;
      border-radius: 0;
      font-size: inherit;
    }
  }
}

// 容器样式
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  
  @media (max-width: 768px) {
    padding: 0 16px;
  }
}

// 网格布局
.grid {
  display: grid;
  gap: 20px;
  
  &.grid-2 {
    grid-template-columns: repeat(2, 1fr);
    
    @media (max-width: 768px) {
      grid-template-columns: 1fr;
    }
  }
  
  &.grid-3 {
    grid-template-columns: repeat(3, 1fr);
    
    @media (max-width: 1024px) {
      grid-template-columns: repeat(2, 1fr);
    }
    
    @media (max-width: 768px) {
      grid-template-columns: 1fr;
    }
  }
  
  &.grid-4 {
    grid-template-columns: repeat(4, 1fr);
    
    @media (max-width: 1024px) {
      grid-template-columns: repeat(2, 1fr);
    }
    
    @media (max-width: 768px) {
      grid-template-columns: 1fr;
    }
  }
}

// 弹性布局
.flex {
  display: flex;
  
  &.flex-center {
    align-items: center;
    justify-content: center;
  }
  
  &.flex-between {
    align-items: center;
    justify-content: space-between;
  }
  
  &.flex-column {
    flex-direction: column;
  }
  
  &.flex-wrap {
    flex-wrap: wrap;
  }
  
  &.flex-1 {
    flex: 1;
  }
}

// 间距工具类
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 40px; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 40px; }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: 8px; }
.ml-2 { margin-left: 16px; }
.ml-3 { margin-left: 24px; }
.ml-4 { margin-left: 32px; }
.ml-5 { margin-left: 40px; }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: 8px; }
.mr-2 { margin-right: 16px; }
.mr-3 { margin-right: 24px; }
.mr-4 { margin-right: 32px; }
.mr-5 { margin-right: 40px; }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: 8px; }
.pt-2 { padding-top: 16px; }
.pt-3 { padding-top: 24px; }
.pt-4 { padding-top: 32px; }
.pt-5 { padding-top: 40px; }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: 8px; }
.pb-2 { padding-bottom: 16px; }
.pb-3 { padding-bottom: 24px; }
.pb-4 { padding-bottom: 32px; }
.pb-5 { padding-bottom: 40px; }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: 8px; }
.pl-2 { padding-left: 16px; }
.pl-3 { padding-left: 24px; }
.pl-4 { padding-left: 32px; }
.pl-5 { padding-left: 40px; }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: 8px; }
.pr-2 { padding-right: 16px; }
.pr-3 { padding-right: 24px; }
.pr-4 { padding-right: 32px; }
.pr-5 { padding-right: 40px; }

// 文本工具类
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-regular { color: var(--text-regular); }
.text-secondary { color: var(--text-secondary); }
.text-placeholder { color: var(--text-placeholder); }

.text-success { color: var(--success-color); }
.text-warning { color: var(--warning-color); }
.text-danger { color: var(--danger-color); }
.text-info { color: var(--info-color); }

.font-bold { font-weight: bold; }
.font-normal { font-weight: normal; }
.font-light { font-weight: 300; }

.text-sm { font-size: 12px; }
.text-base { font-size: 14px; }
.text-lg { font-size: 16px; }
.text-xl { font-size: 18px; }
.text-2xl { font-size: 20px; }
.text-3xl { font-size: 24px; }
.text-4xl { font-size: 28px; }

// 显示工具类
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

// 响应式工具类
@media (max-width: 768px) {
  .d-md-none { display: none; }
  .d-md-block { display: block; }
  .d-md-flex { display: flex; }
  .d-md-grid { display: grid; }
}

@media (max-width: 1024px) {
  .d-lg-none { display: none; }
  .d-lg-block { display: block; }
  .d-lg-flex { display: flex; }
  .d-lg-grid { display: grid; }
}

// 动画工具类
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

.slide-up {
  animation: slideUp 0.5s ease-out;
}

.slide-down {
  animation: slideDown 0.5s ease-out;
}

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

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

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

// 加载动画
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

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

// 徽章样式
.badge {
  display: inline-block;
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 4px;
  text-align: center;
  
  &.badge-primary {
    background: var(--primary-color);
    color: white;
  }
  
  &.badge-success {
    background: var(--success-color);
    color: white;
  }
  
  &.badge-warning {
    background: var(--warning-color);
    color: white;
  }
  
  &.badge-danger {
    background: var(--danger-color);
    color: white;
  }
  
  &.badge-info {
    background: var(--info-color);
    color: white;
  }
}

// 标签样式
.tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 16px;
  background: var(--background-light);
  color: var(--text-regular);
  margin: 2px;
  
  &:hover {
    background: var(--primary-color);
    color: white;
  }
}

// 分割线
.divider {
  height: 1px;
  background: var(--border-light);
  margin: 20px 0;
}

// 空状态
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
  
  .empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
  }
  
  .empty-title {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 8px;
  }
  
  .empty-description {
    font-size: 14px;
    line-height: 1.5;
  }
}