/* ==================== PC 版公共样式 ==================== */
/* 桌面优化布局 - 混合方案 */

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

html, body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: #1a1a1a;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
}

/* ==================== 颜色变量 ==================== */
:root {
  --primary-color: #1890ff;
  --primary-gradient: linear-gradient(135deg, #1890ff 0%, #36cfc9 100%);
  --success-color: #52c41a;
  --danger-color: #ff4d4f;
  --warning-color: #faad14;
  --text-primary: #1a1a1a;
  --text-secondary: #666;
  --text-muted: #999;
  --bg-light: #f5f7fa;
  --bg-white: #ffffff;
  --border-color: #e8e8e8;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

/* ==================== 布局容器 ==================== */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

/* ==================== 导航栏 ==================== */
.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
}

.navbar-brand-icon {
  font-size: 28px;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
  cursor: pointer;
}

.nav-link:hover {
  background: var(--bg-light);
  color: var(--primary-color);
}

.nav-link.active {
  background: var(--primary-gradient);
  color: #fff;
}

.nav-link-icon {
  font-size: 18px;
}

/* ==================== 按钮样式 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(24, 144, 255, 0.4);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

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

.btn-secondary:hover:not(:disabled) {
  background: #e8e8e8;
}

.btn-danger {
  background: linear-gradient(135deg, #ff4d4f 0%, #ff7875 100%);
  color: #fff;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

/* ==================== 卡片样式 ==================== */
.card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-body {
  color: var(--text-secondary);
}

/* ==================== 网格布局 ==================== */
.grid {
  display: grid;
  gap: 24px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

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

@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* ==================== 涨跌颜色 ==================== */
.up {
  color: var(--danger-color) !important;
}

.down {
  color: var(--success-color) !important;
}

.bg-up {
  background: var(--danger-color) !important;
}

.bg-down {
  background: var(--success-color) !important;
}

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

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

.font-weight-bold {
  font-weight: 600;
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

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

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

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

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

.animate-slide-in {
  animation: slideIn 0.3s ease forwards;
}

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
  .main-content {
    padding: 16px;
  }
  
  .navbar {
    padding: 0 16px;
    height: 56px;
  }
  
  .navbar-brand {
    font-size: 18px;
  }
  
  .nav-link-text {
    display: none;
  }
}

/* ==================== Toast 提示 ==================== */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: rgba(0, 0, 0, 0.85);
  color: #fff;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
}

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

/* ==================== Modal 弹窗 ==================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: #fff;
  border-radius: var(--radius-xl);
  width: 90%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  transform: scale(0.9) translateY(20px);
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
}

.modal-overlay.show .modal {
  transform: scale(1) translateY(0);
}

.modal-title {
  font-size: 22px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.modal-desc {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.modal-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

.modal-actions .btn {
  flex: 1;
}

/* ==================== 加载状态 ==================== */
.loading-spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid rgba(24, 144, 255, 0.2);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-muted);
  gap: 16px;
}

/* ==================== 页面切换 ==================== */
.page {
  display: none;
}

.page.active {
  display: block;
}

/* ==================== 简化页脚 ==================== */
.footer-simple {
  text-align: center;
  padding: 24px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(10px);
}