/**
 * Ellipse UI Design System
 * 椭圆形卡片设计系统 - 无堆叠、无覆盖
 */

:root {
  /* 主色调 - 梦幻紫粉 */
  --primary: #8b5cf6;
  --primary-light: #a78bfa;
  --primary-dark: #7c3aed;
  
  /* 辅助色 */
  --secondary: #ec4899;
  --secondary-light: #f472b6;
  --accent: #06b6d4;
  --accent-light: #67e8f9;
  
  /* 状态色 */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  
  /* 背景色 - 柔和渐变 */
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-elevated: rgba(255, 255, 255, 0.06);
  
  /* 文字色 */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-tertiary: rgba(255, 255, 255, 0.5);
  --text-muted: rgba(255, 255, 255, 0.35);
  
  /* 边框 */
  --border-light: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.12);
  
  /* 圆角 - 椭圆形 */
  --radius-pill: 9999px;
  --radius-xl: 24px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  
  /* 阴影 - 柔和发光 */
  --shadow-soft: 0 4px 20px rgba(139, 92, 246, 0.15);
  --shadow-medium: 0 8px 32px rgba(139, 92, 246, 0.2);
  --shadow-glow: 0 0 40px rgba(139, 92, 246, 0.3);
  
  /* 间距 */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 20px;
  --space-2xl: 24px;
  --space-3xl: 32px;
  
  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
}

/* ===== 基础重置 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== 页面容器 ===== */
.page-wrapper {
  min-height: 100vh;
  padding-bottom: calc(80px + env(safe-area-inset-bottom));
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.page-header {
  padding: var(--space-lg);
  padding-top: calc(50px + env(safe-area-inset-top));
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ===== 椭圆形卡片 ===== */
.ellipse-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  margin: var(--space-md) var(--space-lg);
  transition: all var(--transition-normal);
}

.ellipse-card:hover {
  background: var(--bg-elevated);
  border-color: var(--border-medium);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

.ellipse-card:active {
  transform: translateY(0);
}

/* 小椭圆形按钮 */
.ellipse-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border: none;
  border-radius: var(--radius-pill);
  color: white;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-soft);
}

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

.ellipse-btn:active {
  transform: translateY(0);
  box-shadow: none;
}

.ellipse-btn-secondary {
  background: var(--bg-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
}

.ellipse-btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--primary-light);
}

.ellipse-btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
}

.ellipse-btn-danger {
  background: linear-gradient(135deg, var(--danger) 0%, #dc2626 100%);
}

/* ===== 输入框 ===== */
.ellipse-input {
  width: 100%;
  padding: var(--space-lg) var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
  transition: all var(--transition-fast);
}

.ellipse-input:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.ellipse-input::placeholder {
  color: var(--text-muted);
}

/* ===== 标签 ===== */
.ellipse-tag {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 500;
  color: var(--primary-light);
}

.ellipse-tag-success {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.3);
  color: #34d399;
}

.ellipse-tag-warning {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.3);
  color: #fbbf24;
}

/* ===== 列表项 ===== */
.ellipse-list {
  padding: 0 var(--space-lg);
}

.ellipse-item {
  display: flex;
  align-items: center;
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.ellipse-item:hover {
  background: var(--bg-elevated);
  border-color: var(--border-medium);
}

.ellipse-item-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-right: var(--space-md);
  flex-shrink: 0;
}

.ellipse-item-content {
  flex: 1;
  min-width: 0;
}

.ellipse-item-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ellipse-item-subtitle {
  font-size: 13px;
  color: var(--text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ellipse-item-meta {
  text-align: right;
  margin-left: var(--space-md);
}

.ellipse-item-time {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.ellipse-item-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background: var(--secondary);
  border-radius: var(--radius-pill);
  font-size: 11px;
  font-weight: 600;
  color: white;
}

/* ===== 底部导航 ===== */
.ellipse-tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  padding-bottom: calc(var(--space-md) + env(safe-area-inset-bottom));
  background: rgba(15, 15, 26, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-light);
  z-index: 1000;
}

.ellipse-tabbar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-tertiary);
  text-decoration: none;
  transition: all var(--transition-fast);
  border-radius: var(--radius-lg);
}

.ellipse-tabbar-item:hover {
  color: var(--text-secondary);
}

.ellipse-tabbar-item.active {
  color: var(--primary-light);
}

.ellipse-tabbar-item.active .ellipse-tabbar-icon {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.ellipse-tabbar-icon {
  width: 24px;
  height: 24px;
  font-size: 22px;
  line-height: 1;
}

.ellipse-tabbar-label {
  font-size: 11px;
  font-weight: 500;
}

/* ===== 商品卡片 ===== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  padding: 0 var(--space-lg);
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
  border-color: var(--border-medium);
}

.product-image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, #252545 100%);
}

.product-info {
  padding: var(--space-md);
}

.product-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--space-sm);
  height: 40px;
}

.product-price {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.product-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-sm);
}

.product-seller {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ===== 头像 ===== */
.ellipse-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 600;
  color: white;
  box-shadow: var(--shadow-soft);
}

.ellipse-avatar-lg {
  width: 80px;
  height: 80px;
  font-size: 32px;
}

.ellipse-avatar-sm {
  width: 40px;
  height: 40px;
  font-size: 16px;
}

/* ===== 浮动按钮 ===== */
.fab {
  position: fixed;
  right: var(--space-xl);
  bottom: calc(100px + env(safe-area-inset-bottom));
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 24px;
  cursor: pointer;
  box-shadow: var(--shadow-medium);
  transition: all var(--transition-fast);
  z-index: 100;
}

.fab:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-glow);
}

.fab:active {
  transform: scale(0.95);
}

/* ===== 进度条 ===== */
.ellipse-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
}

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}

.progress-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--border-medium);
  transition: all var(--transition-normal);
}

.progress-dot.active {
  background: var(--primary);
  box-shadow: 0 0 12px rgba(139, 92, 246, 0.5);
}

.progress-dot.completed {
  background: var(--success);
}

.progress-line {
  flex: 1;
  height: 2px;
  background: var(--border-medium);
  margin: 0 var(--space-sm);
}

.progress-line.completed {
  background: linear-gradient(90deg, var(--success) 0%, var(--primary) 100%);
}

.progress-label {
  font-size: 11px;
  color: var(--text-muted);
}

.progress-label.active {
  color: var(--primary-light);
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: var(--space-3xl) var(--space-xl);
}

.empty-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
}

.empty-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.empty-desc {
  font-size: 14px;
  color: var(--text-tertiary);
  margin-bottom: var(--space-xl);
}

/* ===== 搜索框 ===== */
.search-bar {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
}

.search-input-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-pill);
}

.search-input-wrapper:focus-within {
  border-color: var(--primary-light);
}

.search-icon {
  font-size: 18px;
  color: var(--text-muted);
}

.search-input {
  flex: 1;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 15px;
  outline: none;
}

/* ===== 分隔线 ===== */
.divider {
  height: 1px;
  background: var(--border-light);
  margin: var(--space-lg) 0;
}

/* ===== 动画 ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.4);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(139, 92, 246, 0);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.4s ease forwards;
}

.animate-pulse {
  animation: pulse 2s infinite;
}

/* ===== 响应式 ===== */
@media (min-width: 768px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(4, 1fr);
    max-width: 1200px;
    margin: 0 auto;
  }
}

/* ===== 工具类 ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }

.hidden { display: none !important; }
.w-full { width: 100%; }
.h-full { height: 100%; }