/* 苹果风设计系统 - 晨曦蓝主题 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&display=swap');

:root {
  /* 主色调 - 天空蓝 */
  --color-primary: #0ea5e9;
  --color-primary-light: #38bdf8;
  --color-primary-dark: #0284c7;
  --color-secondary: #8b5cf6;
  
  /* 背景色 - 苹果风浅灰白 */
  --color-bg: #f8fafc;
  --color-bg-elevated: #ffffff;
  --color-bg-secondary: #f1f5f9;
  
  /* 文字色 */
  --color-text: #0f172a;
  --color-text-secondary: #64748b;
  --color-text-tertiary: #94a3b8;
  
  /* 边框与分隔 */
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  
  /* 功能色 */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  
  /* 阴影 - 苹果风格柔和阴影 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(14, 165, 233, 0.3);
  
  /* 圆角 - 苹果大圆角 */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  
  /* 字体 */
  --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* 过渡 */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 苹果风卡片 - 白底+柔和阴影+大圆角 */
.card {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

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

.card-elevated {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border-light);
}

/* 按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
}

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

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

.btn-danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.2);
}

/* 输入框 - 苹果风格 */
.input {
  width: 100%;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-elevated);
  color: var(--color-text);
  transition: all var(--transition-fast);
  font-family: inherit;
}

.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

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

/* 标签页 */
.tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 2px solid var(--color-border);
  padding: 0 0.5rem;
}

.tab {
  padding: 0.75rem 1.25rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

/* 表格 - 苹果风 */
.table-container {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

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

th {
  text-align: left;
  padding: 1rem 1.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
}

td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.875rem;
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background: rgba(14, 165, 233, 0.03);
}

/* 弹窗 - 苹果风毛玻璃 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

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

.modal-content {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalSlide 0.3s ease;
}

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

/* Toast - 苹果风格顶部浮动 */
.toast {
  position: fixed;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(12px);
  color: white;
  padding: 1rem 2rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  z-index: 2000;
  opacity: 0;
  transition: all 0.3s ease;
  font-weight: 500;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* 布局工具 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .grid-2, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* 特殊元素 */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  background: rgba(14, 165, 233, 0.1);
  color: var(--color-primary-dark);
}

.avatar {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
}

/* 进度条 - 苹果风格 */
.progress-bar {
  height: 0.5rem;
  background: var(--color-bg-secondary);
  border-radius: 9999px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: 9999px;
  transition: width 0.5s ease;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--color-text-secondary);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* 导航栏 - 苹果风底部导航（移动端）或侧边栏（桌面端） */
.nav-sidebar {
  width: 260px;
  background: var(--color-bg-elevated);
  border-right: 1px solid var(--color-border);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  padding: 1.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-lg);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  margin-bottom: 0.25rem;
  cursor: pointer;
}

.nav-item:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

.nav-item.active {
  background: rgba(14, 165, 233, 0.1);
  color: var(--color-primary);
  font-weight: 500;
}

/* 统计卡片 - 苹果风大圆角渐变 */
.stat-card {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-2xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

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

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-top: 0.5rem;
}

/* 隐藏 */
.hidden {
  display: none !important;
}

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

.animate-fade-in {
  animation: fadeIn 0.5s ease;
}