/* ==================== 变量定义 ==================== */
:root {
  --primary: #E17055;
  --primary-dark: #D35400;
  --primary-light: #FAB1A0;
  --secondary: #2D3436;
  --text-primary: #2D3436;
  --text-secondary: #636E72;
  --text-light: #B2BEC3;
  --bg-main: #FAFAFA;
  --bg-card: #FFFFFF;
  --border-color: #DFE6E9;
  --success: #00B894;
  --danger: #E74C3C;
  --warning: #FDCB6E;
  --info: #17A589;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
}

/* ==================== 基础样式 ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  text-decoration: none;
  color: inherit;
}

/* ==================== 导航栏 ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 100;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-brand .logo {
  font-size: 28px;
}

.nav-brand .brand-name {
  font-size: 20px;
  font-weight: 600;
  color: var(--secondary);
}

.nav-links {
  display: flex;
  gap: 8px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
}

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

/* ==================== 主容器 ==================== */
#pageContainer {
  padding-top: 60px;
  min-height: 100vh;
}

/* ==================== 登录页 ==================== */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  padding: 20px;
}

.login-box {
  background: white;
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.15);
  width: 100%;
  max-width: 400px;
}

.login-icon {
  font-size: 56px;
  text-align: center;
  margin-bottom: 16px;
}

.login-title {
  font-size: 22px;
  font-weight: 700;
  color: #333;
  text-align: center;
  margin-bottom: 8px;
}

.login-subtitle {
  text-align: center;
  color: #888;
  margin-bottom: 28px;
  font-size: 14px;
}

.login-form .form-group {
  margin-bottom: 16px;
}

.btn-block {
  width: 100%;
  padding: 14px 20px;
  font-size: 15px;
  margin-top: 8px;
}

.login-hint {
  margin-top: 20px;
  text-align: center;
  font-size: 13px;
  color: #999;
}

/* 导航右侧 */
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-username {
  font-size: 14px;
  color: #666;
}

/* ==================== 顾客菜单页 ==================== */
.menu-page {
  max-width: 100%;
  margin: 0 auto;
  padding: 20px;
  min-height: calc(100vh - 60px);
}

.menu-header {
  text-align: center;
  margin-bottom: 24px;
}

.restaurant-name {
  font-size: 28px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 4px;
}

.table-info {
  font-size: 14px;
  color: var(--text-secondary);
}

.menu-toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}

.search-input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(225, 112, 85, 0.1);
}

.category-filter {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 14px;
  background: white;
  cursor: pointer;
  outline: none;
}

.category-filter:focus {
  border-color: var(--primary);
}

/* ==================== 菜品网格 ==================== */
.dishes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.dish-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  cursor: pointer;
}

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

.dish-card .dish-image {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  background: #f0f0f0;
}

.dish-card .dish-info {
  padding: 12px;
}

.dish-card .dish-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dish-card .dish-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.dish-card .dish-price::before {
  content: '¥';
  font-size: 14px;
  margin-right: 2px;
}

.dish-card .dish-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==================== 管理页面基础样式 ==================== */
.admin-page {
  max-width: 1000px;
  margin: 0 auto;
  padding: 32px 24px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.page-header h1 {
  font-size: 24px;
  font-weight: 700;
}

.page-hint {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 14px;
}

/* ==================== 卡片 ==================== */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.card h2 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--secondary);
}

/* ==================== 统计卡片 ==================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.stat-icon {
  font-size: 36px;
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--secondary);
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ==================== 快捷操作 ==================== */
.action-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 20px 16px;
  background: var(--bg-main);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.action-btn:hover {
  background: var(--primary-light);
}

.action-icon {
  font-size: 28px;
}

.action-btn span:last-child {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ==================== 表单 ==================== */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(225, 112, 85, 0.1);
}

.form-group input[type="color"] {
  width: 60px;
  height: 40px;
  padding: 4px;
  cursor: pointer;
}

/* ==================== 按钮 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

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

.btn-secondary:hover {
  background: var(--border-color);
}

.btn-info {
  background: var(--info);
  color: white;
}

.btn-info:hover {
  background: #1E7E8A;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: #C0392B;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-icon {
  padding: 8px;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 18px;
  opacity: 0.6;
  transition: var(--transition);
}

.btn-icon:hover {
  opacity: 1;
}

/* ==================== 图片上传 ==================== */
.image-upload {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.image-upload:hover {
  border-color: var(--primary);
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--text-secondary);
  gap: 8px;
}

.upload-icon {
  font-size: 40px;
}

.upload-preview {
  width: 100%;
  max-height: 200px;
  object-fit: cover;
}

/* ==================== 列表项 ==================== */
.dishes-list,
.categories-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.list-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.list-item .item-image {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: #f0f0f0;
  flex-shrink: 0;
}

.list-item .item-info {
  flex: 1;
  min-width: 0;
}

.list-item .item-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.list-item .item-meta {
  font-size: 14px;
  color: var(--text-secondary);
}

.list-item .item-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-right: 16px;
}

.list-item .item-price::before {
  content: '¥';
  font-size: 14px;
}

.list-item .item-actions {
  display: flex;
  gap: 8px;
}

/* ==================== 餐桌网格 ==================== */
.tables-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.table-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.table-card .table-name {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
}

.table-card .table-qr {
  width: 150px;
  height: 150px;
  margin: 0 auto 16px;
  background: white;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.table-card .table-qr canvas {
  width: 100% !important;
  height: 100% !important;
}

.table-card .table-actions {
  display: flex;
  justify-content: center;
  gap: 8px;
}

/* ==================== 模态框 ==================== */
.modal {
  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: var(--transition);
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow: auto;
  transform: translateY(20px);
  transition: var(--transition);
}

.modal.active .modal-content {
  transform: translateY(0);
}

.modal-small {
  max-width: 400px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--text-secondary);
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: 24px;
}

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

/* ==================== 空状态 ==================== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 64px;
  margin-bottom: 16px;
}

.empty-state p {
  font-size: 16px;
  margin-bottom: 8px;
}

.empty-hint {
  font-size: 14px;
  color: var(--text-light);
}

/* ==================== 预览页面 ==================== */
.preview-container {
  display: flex;
  justify-content: center;
  padding: 20px;
}

.preview-phone {
  width: 375px;
  background: #1a1a1a;
  border-radius: 40px;
  padding: 12px;
  box-shadow: var(--shadow-lg);
}

.phone-frame {
  background: white;
  border-radius: 32px;
  overflow: hidden;
  height: 700px;
}

.phone-header {
  background: var(--primary);
  color: white;
  padding: 16px;
  text-align: center;
  font-weight: 600;
}

.phone-content {
  height: calc(100% - 52px);
  overflow-y: auto;
  padding: 16px;
  background: var(--bg-main);
}

.phone-content .menu-header {
  margin-bottom: 16px;
}

.phone-content .restaurant-name {
  font-size: 22px;
}

.phone-content .menu-toolbar {
  flex-direction: column;
}

.phone-content .dishes-grid {
  grid-template-columns: 1fr;
  gap: 12px;
}

.phone-content .dish-card {
  display: flex;
  flex-direction: row;
}

.phone-content .dish-card .dish-image {
  width: 100px;
  height: 100px;
  aspect-ratio: auto;
}

.phone-content .dish-card .dish-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
  .navbar {
    padding: 0 16px;
  }
  
  .nav-brand .brand-name {
    display: none;
  }
  
  .nav-links {
    overflow-x: auto;
    gap: 4px;
  }
  
  .nav-link {
    padding: 8px 12px;
    font-size: 13px;
  }
  
  .admin-page {
    padding: 20px 16px;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .action-buttons {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .dishes-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
  }
  
  .dish-card .dish-info {
    padding: 8px;
  }
  
  .dish-card .dish-name {
    font-size: 13px;
  }
  
  .dish-card .dish-price {
    font-size: 15px;
  }
  
  .dish-card .dish-price::before {
    font-size: 11px;
  }
  
  .list-item {
    flex-wrap: wrap;
  }
  
  .list-item .item-actions {
    width: 100%;
    justify-content: flex-end;
    margin-top: 12px;
  }
  
  .tables-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==================== 3D模型管理 ==================== */
.models-toolbar {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
}

.models-toolbar .form-control {
  width: 160px;
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: white;
  cursor: pointer;
  outline: none;
}

.models-toolbar .form-control:focus {
  border-color: var(--primary);
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
}

.model-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 8px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.model-card .model-info {
  text-align: center;
  margin-bottom: 6px;
}

.model-card .model-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.model-card .model-category-select {
  width: 100%;
  padding: 3px 4px;
  font-size: 10px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: white;
  color: var(--text-secondary);
  cursor: pointer;
  outline: none;
}

.model-card .model-category-select:focus {
  border-color: var(--primary);
}

.model-card .model-qr {
  width: 64px;
  height: 64px;
  margin: 6px auto 8px;
  background: white;
  padding: 2px;
  border-radius: 4px;
  display: block;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.model-card .model-qr canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.model-card .model-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
}

.model-card .model-actions .btn {
  padding: 3px 6px;
  font-size: 10px;
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.pagination .page-info {
  font-size: 14px;
  color: var(--text-secondary);
}

.pagination .btn {
  min-width: 60px;
}

.pagination .btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 说明书列表 */
.manuals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
}

.manual-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 8px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.manual-card .manual-info {
  text-align: center;
  margin-bottom: 6px;
}

.manual-card .manual-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.manual-card .manual-category-select {
  width: 100%;
  padding: 3px 4px;
  font-size: 10px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  background: white;
  color: var(--text-secondary);
  cursor: pointer;
  outline: none;
}

.manual-card .manual-category-select:focus {
  border-color: var(--primary);
}

.manual-card .manual-qr {
  width: 64px;
  height: 64px;
  margin: 6px auto 8px;
  background: white;
  padding: 2px;
  border-radius: 4px;
  display: block;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.manual-card .manual-qr canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.manual-card .manual-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
}

.manual-card .manual-actions .btn {
  padding: 3px 6px;
  font-size: 10px;
}

/* 上传进度条 */
.upload-progress {
  margin-top: 16px;
}

.upload-progress .progress-bar {
  height: 8px;
  background: var(--border-color);
  border-radius: 4px;
  width: 0%;
  transition: width 0.3s ease;
}

.upload-progress .progress-bar {
  background: var(--primary);
}

.upload-progress span {
  display: block;
  text-align: right;
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

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

.dish-card,
.list-item,
.table-card,
.stat-card,
.model-card {
  animation: fadeIn 0.3s ease;
}