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

body {
  font-family: 'Microsoft YaHei', sans-serif;
  background: linear-gradient(135deg, #d9d9ff 0%, #ffd9ec 100%);
  min-height: 100vh;
  padding: 20px;
  transition: background 0.5s ease;
}

.select-all-container {
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 10px;
  margin-bottom: 10px;
}

.select-all-container label {
  font-weight: bold;
  color: #667eea;
  cursor: pointer;
}

.select-all-container input[type="checkbox"] {
  transform: scale(1.2);
  margin-right: 8px;
}

.batch-list-container {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 10px;
  background: #f7fafc;
}

/* 全选按钮样式 */
.select-all-container {
  border-bottom: 1px solid #e2e8f0;
  padding-bottom: 10px;
  margin-bottom: 10px;
}

.select-all-container label {
  font-weight: bold;
  color: #667eea;
  cursor: pointer;
}

.select-all-container input[type="checkbox"] {
  transform: scale(1.2);
  margin-right: 8px;
}

/* 批量操作列表样式 */
.batch-list-container {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 10px;
  background: #f7fafc;
}

/* ========== 宠物系统活泼可爱主题颜色方案 ========== */

/* 宠物主题颜色变量 */
:root {
  /* 主色调 - 粉蓝色系 */
  --pet-primary: #8ecae6;
  --pet-primary-light: #a8d5e2;
  --pet-primary-dark: #219ebc;
  
  /* 辅助色 - 暖橙色系 */
  --pet-secondary: #ffb4a2;
  --pet-secondary-light: #ffcdb2;
  --pet-secondary-dark: #e5989b;
  
  /* 活泼点缀色 */
  --pet-accent-yellow: #ffd166;
  --pet-accent-pink: #ffafcc;
  --pet-accent-green: #06d6a0;
  
  /* 背景色 */
  --pet-bg-light: #f8f9fa;
  --pet-bg-white: #ffffff;
  --pet-bg-gradient: linear-gradient(135deg, #a8d5e2 0%, #ffcdb2 100%);
}

/* 宠物类型选择网格 - 活泼可爱主题 */
.pet-type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 20px 0;
}

.pet-type-option {
  padding: 18px 15px;
  border: 3px solid var(--pet-primary-light);
  border-radius: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  background: var(--pet-bg-white);
  box-shadow: 0 4px 15px rgba(142, 202, 230, 0.15);
  position: relative;
  overflow: hidden;
}

.pet-type-option::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--pet-bg-gradient);
  transition: left 0.4s ease;
  z-index: 0;
}

.pet-type-option:hover {
  border-color: var(--pet-primary);
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 8px 25px rgba(142, 202, 230, 0.25);
}

.pet-type-option:hover::before {
  left: 0;
}

.pet-type-option.selected {
  border-color: var(--pet-primary-dark);
  background: linear-gradient(135deg, #e8f4f8 0%, #fff5f0 100%);
  box-shadow: 0 6px 20px rgba(33, 158, 188, 0.3);
  transform: scale(1.05);
}

.pet-type-emoji {
  font-size: 3.5em;
  margin-bottom: 12px;
  padding: 15px;
  background: linear-gradient(135deg, var(--pet-primary-light) 0%, var(--pet-secondary-light) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 90px;
  height: 90px;
  aspect-ratio: 1/1;
  box-shadow: 0 6px 20px rgba(142, 202, 230, 0.3);
  transition: all 0.4s ease;
  position: relative;
  z-index: 1;
}

.pet-type-option:hover .pet-type-emoji {
  transform: rotate(5deg) scale(1.1);
  box-shadow: 0 8px 25px rgba(142, 202, 230, 0.4);
}

.pet-type-name {
  font-size: 1.1em;
  font-weight: bold;
  color: var(--pet-primary-dark);
  margin-top: 10px;
  position: relative;
  z-index: 1;
  transition: color 0.3s ease;
}

.pet-type-option:hover .pet-type-name {
  color: var(--pet-secondary-dark);
}

/* 宠物等级预览 - 活泼可爱主题 */
.pet-level-previews {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin: 20px 0;
}

.pet-level-preview {
  text-align: center;
  padding: 15px 10px;
  border: 3px solid var(--pet-primary-light);
  border-radius: 12px;
  background: var(--pet-bg-white);
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(142, 202, 230, 0.1);
  position: relative;
  overflow: hidden;
}

.pet-level-preview::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--pet-bg-gradient);
  z-index: 1;
}

.pet-level-preview:hover {
  transform: translateY(-3px) scale(1.05);
  border-color: var(--pet-primary);
  box-shadow: 0 8px 25px rgba(142, 202, 230, 0.2);
}

.pet-level-image {
  width: 70px;
  height: 70px;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto 8px;
  border: 3px solid var(--pet-primary-light);
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(142, 202, 230, 0.15);
}

.pet-level-preview:hover .pet-level-image {
  border-color: var(--pet-secondary);
  transform: rotate(5deg);
  box-shadow: 0 6px 20px rgba(255, 180, 162, 0.25);
}

.pet-level-name {
  font-size: 0.85em;
  color: var(--pet-primary-dark);
  font-weight: 500;
  transition: color 0.3s ease;
}

.pet-level-preview:hover .pet-level-name {
  color: var(--pet-secondary-dark);
}

/* 宠物配置管理 - 活泼可爱主题 */
.pet-config-type {
  margin-bottom: 30px;
  padding: 25px;
  background: var(--pet-bg-white);
  border-radius: 16px;
  border: 2px solid var(--pet-primary-light);
  box-shadow: 0 6px 20px rgba(142, 202, 230, 0.15);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  overflow: hidden;
}

.pet-config-type::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--pet-bg-gradient);
  z-index: 1;
}

.pet-config-type:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(142, 202, 230, 0.25);
  border-color: var(--pet-primary);
}

/* 宠物配置标签页样式 */
.pet-config-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--pet-primary-light);
  padding-bottom: 0;
}

.pet-config-tab-btn {
  padding: 10px 20px;
  border: 2px solid transparent;
  border-bottom: none;
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
  background: linear-gradient(135deg, var(--pet-bg-light) 0%, #f0f8ff 100%);
  cursor: pointer;
  font-weight: 500;
  color: var(--pet-primary-dark);
  white-space: nowrap;
  transition: all 0.3s ease;
  margin-bottom: -2px;
  position: relative;
  z-index: 1;
  box-shadow: 0 2px 8px rgba(142, 202, 230, 0.1);
}

.pet-config-tab-btn:hover {
  background: linear-gradient(135deg, var(--pet-primary-light) 0%, var(--pet-secondary-light) 100%);
  color: var(--pet-secondary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(142, 202, 230, 0.2);
}

.pet-config-tab-btn.active {
  background: linear-gradient(135deg, var(--pet-primary) 0%, var(--pet-secondary) 100%);
  color: white;
  border-color: var(--pet-primary-dark);
  box-shadow: 0 4px 15px rgba(142, 202, 230, 0.3);
  transform: translateY(-1px);
}

/* 宠物配置内容区域 */
.pet-config-tab-content {
  display: none;
  padding: 25px;
  background: var(--pet-bg-white);
  border-radius: 0 12px 12px 12px;
  border: 2px solid var(--pet-primary-light);
  box-shadow: 0 6px 20px rgba(142, 202, 230, 0.15);
  margin-top: -2px;
}

.pet-config-tab-content.active {
  display: block;
  animation: fadeInUp 0.5s ease;
}

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

/* 宠物配置头部 */
.pet-config-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

/* 宠物配置基本信息 */
.pet-config-basic-info {
  display: flex;
  gap: 15px;
  align-items: center;
  flex-wrap: wrap;
}

.pet-config-name-input,
.pet-config-emoji-input,
.pet-config-color-input {
  padding: 10px 15px;
  border: 2px solid var(--pet-primary-light);
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.3s ease;
  background: var(--pet-bg-white);
}

.pet-config-name-input:focus,
.pet-config-emoji-input:focus,
.pet-config-color-input:focus {
  border-color: var(--pet-primary);
  box-shadow: 0 0 0 3px rgba(142, 202, 230, 0.3);
  outline: none;
}

/* 宠物配置按钮 */
.apply-pet-to-all-students-btn,
.delete-pet-type-btn {
  padding: 8px 16px;
  border: 2px solid;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-left: 10px;
}

.apply-pet-to-all-students-btn {
  background: linear-gradient(135deg, var(--pet-accent-green) 0%, #06b48a 100%);
  color: white;
  border-color: var(--pet-accent-green);
}

.apply-pet-to-all-students-btn:hover {
  background: linear-gradient(135deg, #06b48a 0%, #059669 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(6, 214, 160, 0.3);
}

.delete-pet-type-btn {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  color: white;
  border-color: #ef4444;
}

.delete-pet-type-btn:hover {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

/* 宠物等级配置 */
.pet-config-levels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 25px;
}

.pet-config-level {
  padding: 20px;
  background: linear-gradient(135deg, var(--pet-bg-light) 0%, #f8fafc 100%);
  border: 2px solid var(--pet-primary-light);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.pet-config-level:hover {
  border-color: var(--pet-primary);
  box-shadow: 0 6px 20px rgba(142, 202, 230, 0.2);
  transform: translateY(-3px);
}

/* 宠物图片上传区域 */
.pet-config-upload {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 15px auto;
  border: 3px dashed var(--pet-primary-light);
  border-radius: 12px;
  transition: all 0.3s ease;
  background: var(--pet-bg-white);
}

.pet-config-upload:hover {
  border-color: var(--pet-primary);
  background: linear-gradient(135deg, #f0f8ff 0%, #fff5f5 100%);
}

.pet-config-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.pet-config-upload:hover .pet-config-image {
  transform: scale(1.05);
}

/* 宠物配置信息区域 */
.pet-config-info {
  background: linear-gradient(135deg, var(--pet-primary-light) 0%, var(--pet-secondary-light) 100%);
  border: 2px solid var(--pet-primary);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 25px;
  color: var(--pet-primary-dark);
  font-weight: 500;
}

.pet-config-info p {
  margin: 0;
  line-height: 1.5;
}
  background: white;
  font-weight: 600;
  color: #2563eb;
  border-bottom: 1px solid white;
  margin-bottom: -1px;
  z-index: 2;
}

.pet-config-tab-contents {
  margin-top: 0;
}

.pet-config-tab-content {
  display: none;
  padding: 20px;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 0 0 8px 8px;
}

.pet-config-tab-content.active {
  display: block;
}

/* 宠物配置区域独立滚动 */
#petConfigTab #petConfigContainer {
  max-height: 400px;
  overflow-y: auto;
  padding-right: 10px;
}

#petConfigTab #petConfigContainer::-webkit-scrollbar {
  width: 6px;
}

#petConfigTab #petConfigContainer::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 3px;
}

#petConfigTab #petConfigContainer::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 3px;
}

#petConfigTab #petConfigContainer::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

.pet-config-type:hover {
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.1);
}

.pet-config-header {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid #e2e8f0;
}

.pet-config-emoji {
  font-size: 2em;
  padding: 8px;
  background: #667eea20;
  border-radius: 8px;
}

.pet-config-name {
  font-weight: bold;
  font-size: 1.25em;
  color: #2d3748;
}

/* 宠物配置输入框样式 - 与系统保持一致 */
.pet-config-name-input,
.pet-config-emoji-input,
.pet-config-color-input,
.pet-config-stage-name {
  width: 90%;
  padding: 8px 10px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  font-size: 13px;
  transition: border-color 0.3s ease;
  margin-bottom: 8px;
}

.pet-config-name-input:focus,
.pet-config-emoji-input:focus,
.pet-config-color-input:focus,
.pet-config-stage-name:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.pet-config-levels {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 15px;
}

.pet-config-level {
  text-align: center;
  padding: 10px;
  background: #f7fafc;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  transition: all 0.3s ease;
}

.pet-config-level:hover {
  border-color: #667eea;
  background: #f0f4ff;
}

.pet-config-level-label {
  font-size: 0.9em;
  font-weight: bold;
  color: #4a5568;
  margin-bottom: 10px;
}

.pet-config-image {
  width: 60px;
  height: 60px;
  object-fit: contain;
  border-radius: 8px;
  margin-bottom: 5px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.pet-config-image:hover {
  transform: scale(1.05);
}

.pet-config-image.has-image {
  border: 2px solid #48bb78;
  box-shadow: 0 0 0 3px rgba(72, 187, 120, 0.1);
}

/* 修复图片上传区域文字显示问题 */
.pet-config-upload div {
  position: relative;
  width: 100px;
  height: 100px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  border: 2px dashed #ddd;
  border-radius: 8px;
  background: #f8fafc;
  cursor: pointer;
  transition: all 0.2s;
}

.pet-config-upload div:hover {
  border-color: #667eea;
  background: #f0f4ff;
}

.pet-config-upload span {
  font-size: 0.8em;
  color: #64748b;
  margin-top: 5px;
  text-align: center;
  z-index: 1;
}

.pet-config-upload input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

/* 宠物配置按钮样式 - 与系统保持一致 */
.pet-config-level button {
  background: #667eea;
  color: white;
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  transition: all 0.3s ease;
}

.pet-config-level button:hover {
  background: #5a67d8;
  transform: translateY(-1px);
}

.pet-config-level button:active {
  transform: translateY(0);
}

/* 批量操作区域样式 */
.pet-batch-operations {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
  padding: 15px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
}

.pet-batch-operations label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: bold;
  color: #4a5568;
  cursor: pointer;
}

.pet-batch-operations input[type="checkbox"] {
  transform: scale(1.2);
  cursor: pointer;
}

.selected-count {
  font-size: 0.9em;
  color: #718096;
  font-weight: normal;
}

.batch-delete-btn {
  background: #e53e3e;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.batch-delete-btn:hover:not(:disabled) {
  background: #c53030;
  transform: translateY(-1px);
}

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

.batch-delete-btn:disabled {
  background: #a0aec0;
  cursor: not-allowed;
  opacity: 0.6;
}

/* 宠物多选框样式 */
.pet-checkbox {
  transform: scale(1.2);
  margin-right: 15px;
  cursor: pointer;
}

/* 当前宠物显示 - 活泼可爱主题 */
.current-pet-display {
  margin: 25px 0;
  padding: 20px;
  background: linear-gradient(135deg, var(--pet-primary-light) 0%, var(--pet-secondary-light) 100%);
  border-radius: 16px;
  border: 3px solid var(--pet-primary);
  text-align: center;
  box-shadow: 0 6px 20px rgba(142, 202, 230, 0.25);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.current-pet-display::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--pet-bg-gradient);
  transition: left 0.5s ease;
  z-index: 0;
}

.current-pet-display:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 30px rgba(142, 202, 230, 0.35);
  border-color: var(--pet-primary-dark);
}

.current-pet-display:hover::before {
  left: 0;
}

.current-pet-display h4 {
  margin-bottom: 15px;
  color: var(--pet-primary-dark);
  font-weight: 600;
  position: relative;
  z-index: 1;
  transition: color 0.3s ease;
}

.current-pet-display:hover h4 {
  color: var(--pet-secondary-dark);
}

#currentPetPreview {
  font-size: 3em;
  position: relative;
  z-index: 1;
  transition: all 0.3s ease;
}

.current-pet-display:hover #currentPetPreview {
  transform: scale(1.1) rotate(5deg);
}

/* 学生卡片中的宠物显示样式 - 活泼可爱主题 */
.student-pet-display {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 12px 0;
  padding: 12px;
  background: linear-gradient(135deg, var(--pet-primary-light) 0%, var(--pet-secondary-light) 100%);
  border-radius: 12px;
  border: 2px solid var(--pet-primary);
  box-shadow: 0 4px 12px rgba(142, 202, 230, 0.2);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.student-pet-display::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--pet-bg-gradient);
  transition: left 0.4s ease;
  z-index: 0;
}

.student-pet-display:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 20px rgba(142, 202, 230, 0.3);
  border-color: var(--pet-primary-dark);
}

.student-pet-display:hover::before {
  left: 0;
}

.student-pet-emoji {
  font-size: 2.2em;
  margin-right: 10px;
  position: relative;
  z-index: 1;
  transition: all 0.3s ease;
}

.student-pet-display:hover .student-pet-emoji {
  transform: rotate(8deg) scale(1.1);
}

.student-pet-level {
  font-size: 0.95em;
  color: var(--pet-primary-dark);
  font-weight: 600;
  position: relative;
  z-index: 1;
  transition: color 0.3s ease;
}

.student-pet-display:hover .student-pet-level {
  color: var(--pet-secondary-dark);
}

/* 小组宠物显示样式 */
.group-pet-display {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 12px 0;
  padding: 15px;
  background: linear-gradient(135deg, var(--pet-accent-yellow) 0%, var(--pet-accent-pink) 100%);
  border-radius: 16px;
  border: 3px solid var(--pet-accent-yellow);
  box-shadow: 0 6px 20px rgba(255, 209, 102, 0.25);
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.group-pet-display::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--pet-accent-pink) 0%, var(--pet-accent-yellow) 100%);
  transition: left 0.4s ease;
  z-index: 0;
}

.group-pet-display:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(255, 209, 102, 0.35);
  border-color: var(--pet-accent-pink);
}

.group-pet-display:hover::before {
  left: 0;
}

.group-pet-emoji {
  font-size: 2.5em;
  margin-right: 12px;
  position: relative;
  z-index: 1;
  transition: all 0.3s ease;
}

.group-pet-display:hover .group-pet-emoji {
  transform: rotate(-8deg) scale(1.1);
}

.group-pet-level {
  font-size: 1em;
  color: var(--pet-primary-dark);
  font-weight: 700;
  position: relative;
  z-index: 1;
  transition: color 0.3s ease;
}

.group-pet-display:hover .group-pet-level {
  color: var(--pet-secondary-dark);
}

/* 响应式调整 */
@media (max-width: 768px) {
  .pet-type-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }
  
  .pet-level-previews,
  .pet-config-levels {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .pet-type-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }
}

.main-container {
  width: 95%;
  max-width: 1600px;
  margin: 0 auto;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-radius: 24px;
  padding: 35px;
  box-shadow: 0 20px 60px rgba(142, 202, 230, 0.25);
  backdrop-filter: blur(10px);
  border: 3px solid var(--pet-primary-light);
  transition: all 0.4s ease;
}

.main-container:hover {
  box-shadow: 0 25px 80px rgba(142, 202, 230, 0.3);
  transform: translateY(-2px);
}

h1 {
  color: #5a67d8;
  margin-bottom: 30px;
  font-size: 2.5em;
  text-align: center;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
  cursor: pointer;
}

.controls {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  padding: 12px 20px;
  border: none;
  border-radius: 16px;
  cursor: pointer;
  font-size: 1.1em;
  font-weight: bold;
  transition: all 0.4s ease;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--pet-primary) 0%, var(--pet-primary-dark) 100%);
  color: white;
  border: 2px solid var(--pet-primary);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--pet-secondary-light) 0%, var(--pet-secondary) 100%);
  color: var(--pet-primary-dark);
  border: 2px solid var(--pet-secondary);
}

.btn-warning {
  background: linear-gradient(135deg, var(--pet-accent-yellow) 0%, #dd6b20 100%);
  color: var(--pet-primary-dark);
  border: 2px solid var(--pet-accent-yellow);
}

.btn-danger {
  background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
  color: white;
  border: 2px solid #dc2626;
  font-weight: 600;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.btn-info {
  background: linear-gradient(135deg, var(--pet-primary-light) 0%, var(--pet-primary) 100%);
  color: white;
  border: 2px solid var(--pet-primary-light);
}

.btn-success {
  background: linear-gradient(135deg, var(--pet-accent-green) 0%, #059669 100%);
  color: white;
  border: 2px solid var(--pet-accent-green);
}

.btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 8px 25px rgba(142, 202, 230, 0.4);
  border-color: var(--pet-primary-dark);
}

.btn-secondary:hover {
  background: linear-gradient(135deg, var(--pet-secondary) 0%, var(--pet-secondary-dark) 100%);
  color: white;
  box-shadow: 0 8px 25px rgba(255, 180, 162, 0.4);
}

.btn-warning:hover {
  color: white;
  box-shadow: 0 8px 25px rgba(255, 209, 102, 0.4);
}

.btn-danger:hover {
  box-shadow: 0 8px 25px rgba(220, 38, 38, 0.5);
  background: linear-gradient(135deg, #b91c1c 0%, #991b1b 100%);
  border-color: #b91c1c;
  transform: translateY(-3px) scale(1.05);
}

.btn-info:hover {
  box-shadow: 0 8px 25px rgba(142, 202, 230, 0.4);
}

.btn-success:hover {
  box-shadow: 0 8px 25px rgba(16, 185, 129, 0.4);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.upload-input {
  display: none;
}

/* 控制按钮行样式 */
.controls-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 10px;
}

.controls-row-1 {
  /* 第一行按钮样式 */
}

.controls-row-2 {
  /* 第二行按钮样式，将特定按钮靠右显示 */
  justify-content: flex-end;
  padding-right: 20px;
}

/* 响应式设计调整 */
@media (max-width: 768px) {
  .controls-row {
    flex-direction: column;
    align-items: stretch;
  }
  
  .controls-row-2 {
    justify-content: center;
    padding-right: 0;
  }
  
  .btn {
    width: 100%;
  }
}

/* 班级选择器样式 */
.class-selector {
  padding: 8px 12px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 1em;
  background: white;
  color: #2d3748;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 150px;
}

.class-selector:hover {
  border-color: #667eea;
}

.class-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 15px;
  margin: 8px 0;
  background: #f7fafc;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  transition: all 0.3s ease;
}

.class-item:hover {
  background: #edf2f7;
  transform: translateX(5px);
}

.class-item.active {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-color: #5a67d8;
}

.class-info {
  flex: 1;
}

.class-name {
  font-weight: bold;
  font-size: 1.1em;
}

.class-details {
  font-size: 0.85em;
  color: inherit;
  opacity: 0.8;
  margin-top: 3px;
}

.class-actions {
  display: flex;
  gap: 5px;
}

.class-switch-btn, .class-edit-btn, .class-delete-btn {
  padding: 5px 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.8em;
  transition: all 0.3s ease;
}

.class-switch-btn {
  background: #48bb78;
  color: white;
}

.class-edit-btn {
  background: #4299e1;
  color: white;
}

.class-delete-btn {
  background: #f56565;
  color: white;
}

.class-switch-btn:hover, .class-edit-btn:hover, .class-delete-btn:hover {
  transform: scale(1.05);
}

.current-class-indicator {
  position: absolute;
  top: 60px;
  left: 57px;
  background: rgba(102, 126, 234, 0.1);
  color: #667eea;
  padding: 5px 10px;
  border-radius: 10px;
  font-size: 1.2em;
  border: 1px solid #667eea;
}

/* 配置范围选择器样式 */
.config-scope-selector {
  background: #f7fafc;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  margin-bottom: 15px;
}

.config-scope-selector label {
  font-weight: normal;
  cursor: pointer;
}

.config-scope-selector input[type="radio"] {
  margin-right: 5px;
}

.config-export-buttons {
  border-top: 1px solid #e2e8f0;
  padding-top: 10px;
  text-align: center;
}

.config-export-buttons .btn {
  font-size: 0.9em;
  padding: 6px 12px;
  margin: 0 5px;
}

/* 主内容布局 */
.main-content {
  display: flex;
  gap: 20px;
  margin: 20px 0;
}

/* 左侧内容区域 */
.left-content {
  flex: 0 0 80%;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 右侧排行榜区域 */
.right-content {
  flex: 0 0 20%;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* 解锁按钮样式 */
.unlock-btn {
  background: linear-gradient(135deg, #4ECDC4 0%, #45B7D1 100%);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
}

.unlock-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(78, 205, 196, 0.3);
}

/* 锁定覆盖层样式 */
.lockOverlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 998;
  backdrop-filter: blur(3px);
}

/* 禁用状态样式 */
.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* 标签页样式 */
.content-tabs {
  display: flex;
  margin-bottom: 15px;
  border-bottom: 1px solid #e2e8f0;
}

.content-tab {
  padding: 12px 24px;
  border: none;
  background: none;
  cursor: pointer;
  font-weight: bold;
  color: #718096;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
  flex: 1;
  text-align: center;
}

.content-tab.active {
  color: #5a67d8;
  border-bottom-color: #5a67d8;
}

.content-tab-content {
  display: none;
}

.content-tab-content.active {
  display: block;
}

/* 排行榜样式 */
.rankings-section {
  background: #f7fafc;
  border-radius: 15px;
  padding: 20px;
  height: fit-content;
}

.ranking-column {
  margin-bottom: 20px;
}

.ranking-column:last-child {
  margin-bottom: 0;
}

.ranking-column h3 {
  color: #5a67d8;
  margin-bottom: 15px;
  text-align: center;
  font-size: 1.3em;
}

.ranking-list {
  max-height: 400px;
  overflow-y: auto;
}

.ranking-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  margin: 5px 0;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.ranking-item.gold {
  background: linear-gradient(135deg, #FFD700 0%, #FFEC8B 100%);
  color: #8B7500;
  font-weight: bold;
}

.ranking-item.silver {
  background: linear-gradient(135deg, #C0C0C0 0%, #E8E8E8 100%);
  color: #696969;
  font-weight: bold;
}

.ranking-item.bronze {
  background: linear-gradient(135deg, #CD7F32 0%, #E8B886 100%);
  color: #8B4513;
  font-weight: bold;
}

.ranking-position {
  font-weight: bold;
  font-size: 1.1em;
  color: #5a67d8;
  width: 25px;
  text-align: center;
}

.ranking-name {
  flex: 1;
  margin: 0 10px;
  font-size: 0.9em;
}

.ranking-points {
  font-weight: bold;
  color: #2d3748;
  font-size: 0.9em;
}

/* 学生卡片样式 */
.students-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 15px;
  margin: 15px 0;
}

.student-card, .group-card {
  background: white;
  border-radius: 15px;
  padding: 15px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  text-align: center;
  position: relative;
}

.student-card:hover, .group-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.student-name, .group-name {
  font-size: 1em;
  font-weight: bold;
  color: #2d3748;
  margin-bottom: 8px;
}

.pet-container {
  width: 70px;
  height: 70px;
  margin: 0 auto 8px;
  position: relative;
}

.pet-circle {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2em;
}

/* 放大的宠物容器和圆形样式 */
.pet-container-large {
  width: 90px;
  height: 90px;
  margin: 0 auto 8px;
  position: relative;
}

.pet-circle-large {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5em;
  animation: float 3s ease-in-out infinite;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
  border: 3px solid rgba(255, 255, 255, 0.8);
  position: relative;
  overflow: hidden;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-6px); }
  100% { transform: translateY(0px); }
}

.points-info {
  font-size: 0.85em;
  color: #4a5568;
  margin: 3px 0;
}

.level-info {
  font-size: 0.75em;
  color: #718096;
  background: #edf2f7;
  padding: 2px 6px;
  border-radius: 5px;
  display: inline-block;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: #e2e8f0;
  border-radius: 3px;
  overflow: hidden;
  margin-top: 6px;
}

.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.5s ease;
}

.group-members {
  font-size: 0.8em;
  color: #4a5568;
  margin: 3px 0;
  max-height: 40px;
  overflow-y: auto;
}

/* 学生卡片操作按钮 */
.student-actions {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-top: 8px;
  pointer-events: auto;
  position: relative;
  z-index: 1;
}

.action-btn {
  padding: 4px 8px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75em;
  transition: all 0.3s ease;
  min-width: 25px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.add-btn {
  background: #48bb78;
  color: white;
}

.subtract-btn {
  background: #f56565;
  color: white;
}

/* 积分历史按钮样式增强 */
.history-btn {
  background: #4299e1 !important;
  color: white !important;
  border: none !important;
  padding: 5px 10px !important;
  border-radius: 5px !important;
  cursor: pointer !important;
  font-size: 12px !important;
  pointer-events: auto !important;
  position: relative !important;
  z-index: 10 !important;
}

.history-btn:hover {
  background: #3182ce !important;
  transform: translateY(-1px) !important;
}

.shop-btn {
  background: #ed8936;
  color: white;
}

.delete-btn {
  background: #9f7aea;
  color: white;
}

.action-btn:hover {
  transform: scale(1.05);
}

.action-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* 模态框样式 */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  justify-content: center;
  align-items: center;
}

/* 创建小组和编辑小组模态框特定样式 */
#createGroupModal .modal-content,
#editGroupModal .modal-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#createGroupModal .modal-input,
#editGroupModal .modal-input {
  width: 100%;
  max-width: 400px;
  margin-bottom: 20px;
}

#createGroupModal .available-students,
#editGroupModal .available-students {
  width: 100%;
  margin-top: 20px;
  text-align: left;
}

.modal-content {
  background: white;
  border-radius: 20px;
  padding: 30px;
  max-width: 600px;
  width: 90%;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-input, .modal-select {
  width: 100%;
  padding: 12px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 1.1em;
  margin: 10px 0;
}

.modal-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 20px;
}

/* 统计窗口按钮区域特殊样式 */
.statistics-modal .modal-buttons {
  background: linear-gradient(135deg, #f8fafc 0%, #f0f4ff 100%);
  padding: 20px 30px;
  margin: 0 -30px;
  border-top: 1px solid #e2e8f0;
  border-bottom-left-radius: 20px;
  border-bottom-right-radius: 20px;
  box-shadow: inset 0 4px 12px rgba(102, 126, 234, 0.05);
}

.statistics-modal .modal-buttons .btn {
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95em;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.statistics-modal .modal-buttons .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.statistics-modal .modal-buttons .btn-secondary {
  background: linear-gradient(135deg, #a0aec0 0%, #718096 100%);
  color: white;
  border: none;
}

.statistics-modal .modal-buttons .btn-primary {
  background: linear-gradient(135deg, #48bb78 0%, #38a169 100%);
  color: white;
  border: none;
}

/* 模态框标签页样式 */
.modal-tabs {
  display: flex;
  margin-bottom: 15px;
  border-bottom: 1px solid #e2e8f0;
}

.modal-tab {
  padding: 10px 20px;
  border: none;
  background: none;
  cursor: pointer;
  font-weight: bold;
  color: #718096;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
}

.modal-tab.active {
  color: #5a67d8;
  border-bottom-color: #5a67d8;
}

.modal-tab-content {
  display: none;
}

.modal-tab-content.active {
  display: block;
}

.modal-header {
  padding: 15px 30px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 20px 20px 0 0;
  margin: -30px -30px 20px -30px;
  position: relative;
}

.modal-footer {
  position: sticky;
  bottom: 0;
  background: white;
  padding: 15px 0 0 0;
  border-top: 1px solid #e2e8f0;
  margin-top: 20px;
}

/* 宠物配置保存按钮样式 */
#settingsModal #petConfigTab .modal-footer {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid #e2e8f0;
  text-align: center;
}

#settingsModal #petConfigTab .modal-buttons {
  flex-direction: row;
  justify-content: center;
  gap: 15px;
  margin-top: 0;
}

/* 修改学生名字模态框样式 */
#editStudentNameModal .modal-content {
  max-width: 500px;
  width: 90%;
}

#editStudentNameModal .current-student-info {
  background: linear-gradient(135deg, #f0f4ff 0%, #e6fffa 100%);
  padding: 15px;
  border-radius: 10px;
  margin: 15px 0;
  border: 2px solid #667eea;
  text-align: center;
}

#editStudentNameModal .current-student-label {
  font-size: 0.9em;
  color: #718096;
  margin-bottom: 5px;
}

#editStudentNameModal .current-student-name {
  font-size: 1.2em;
  font-weight: bold;
  color: #2d3748;
}

#editStudentNameModal .edit-name-input {
  width: 100%;
  padding: 12px;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  font-size: 1.1em;
  margin: 10px 0;
  transition: border-color 0.3s ease;
}

#editStudentNameModal .edit-name-input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#editStudentNameModal .validation-message {
  color: #e53e3e;
  font-size: 0.9em;
  margin: 5px 0;
  min-height: 20px;
}

#editStudentNameModal .modal-buttons {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

/* 修改学生名字按钮样式 */
.edit-name-btn {
  background: linear-gradient(135deg, #ed8936 0%, #dd6b20 100%);
  color: white;
  border: none;
  padding: 6px 10px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.8em;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.edit-name-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 2px 8px rgba(237, 137, 54, 0.3);
}

.edit-name-btn:active {
  transform: scale(0.95);
}

/* 批量编辑学生姓名样式 */
.batch-edit-list {
  max-height: 400px;
  overflow-y: auto;
  margin: 15px 0;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 10px;
}

.batch-edit-item {
  display: flex;
  align-items: center;
  padding: 8px 10px;
  margin: 5px 0;
  background: #f7fafc;
  border-radius: 6px;
  transition: all 0.2s ease;
}

.batch-edit-item:hover {
  background: #edf2f7;
}

.batch-edit-label {
  min-width: 120px;
  font-weight: 500;
  color: #2d3748;
}

.batch-edit-input {
  flex: 1;
  padding: 6px 10px;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  font-size: 0.9em;
  transition: border-color 0.2s ease;
}

.batch-edit-input:focus {
  outline: none;
  border-color: #4299e1;
  box-shadow: 0 0 0 2px rgba(66, 153, 225, 0.1);
}

/* 修改姓名按钮样式 - 浅色调设计 */
#editNamesBtn {
  background: #f7fafc;
  color: #718096;
  border: 1px solid #e2e8f0;
  transition: all 0.3s ease;
}

#editNamesBtn:hover {
  background: #edf2f7;
  color: #4a5568;
  border-color: #cbd5e0;
  transform: translateY(-1px);
}

#editNamesBtn:active {
  transform: translateY(0);
  background: #e2e8f0;
}

/* 商店商品样式 */
.shop-items {
  max-height: 300px;
  overflow-y: auto;
  margin: 15px 0;
}

.shop-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  margin: 5px 0;
  background: #f7fafc;
  border-radius: 8px;
}

.shop-item-info {
  flex: 1;
  text-align: left;
}

.shop-item-name {
  font-weight: bold;
}

.shop-item-cost {
  color: #718096;
  font-size: 0.9em;
}

.shop-item-stock {
  color: #718096;
  font-size: 0.9em;
  margin-left: 10px;
}

.buy-btn {
  padding: 5px 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.8em;
  background: #48bb78;
  color: white;
  transition: all 0.3s ease;
}

.buy-btn:hover {
  transform: scale(1.05);
}

.buy-btn:disabled {
  background: #cbd5e0;
  cursor: not-allowed;
  transform: none;
}

/* 规则和商品列表样式 */
.rule-item, .shop-item-config {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  margin: 5px 0;
  background: #f7fafc;
  border-radius: 8px;
}

.rule-name, .item-name {
  flex: 1;
  text-align: left;
}

.rule-points, .item-cost {
  font-weight: bold;
  color: #2d3748;
}

.delete-btn {
  padding: 5px 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.8em;
  background: #f56565;
  color: white;
  margin-left: 10px;
  transition: all 0.3s ease;
}

.delete-btn:hover {
  transform: scale(1.05);
}

/* 小组管理样式 */
.group-management {
  margin-top: 15px;
}

.group-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  margin: 5px 0;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.group-info {
  flex: 1;
}

.group-members-list {
  font-size: 0.8em;
  color: #718096;
  margin-top: 5px;
}

.group-actions {
  display: flex;
  gap: 5px;
  pointer-events: auto;
  position: relative;
  z-index: 1;
}

.edit-group-btn, .delete-group-btn {
  padding: 5px 10px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.8em;
  transition: all 0.3s ease;
}

.edit-group-btn {
  background: #4299e1;
  color: white;
}

.delete-group-btn {
  background: #f56565;
  color: white;
}

/* 可编辑规则和商品样式 */
.editable-item {
  cursor: pointer;
  padding: 5px;
  border-radius: 3px;
  transition: background-color 0.2s;
}

.editable-item:hover {
  background-color: #edf2f7;
}

.edit-input {
  width: 100%;
  padding: 5px;
  border: 1px solid #cbd5e0;
  border-radius: 3px;
  font-size: 0.9em;
}

/* 分小组样式 */
.available-students {
  margin: 15px 0;
}

.students-checkbox {
  max-height: 200px;
  overflow-y: auto;
  background: #f7fafc;
  border-radius: 8px;
  padding: 10px;
  text-align: left;
}

.student-checkbox {
  display: flex;
  align-items: center;
  padding: 5px 0;
}

.student-checkbox input {
  margin-right: 10px;
}

/* 历史记录样式 */
.history-section {
  margin-top: 20px;
  background: #f7fafc;
  border-radius: 15px;
  padding: 20px;
}

.history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  padding: 10px 0;
  margin-bottom: 15px;
  border-bottom: 2px solid #e2e8f0;
  transition: all 0.3s ease;
}

.history-header:hover {
  background: #edf2f7;
  border-radius: 8px;
  padding: 10px;
}

.history-title {
  font-size: 1.3em;
  color: #5a67d8;
  font-weight: bold;
  margin: 0;
}

.history-toggle {
  font-size: 0.9em;
  color: #718096;
  transition: transform 0.3s ease;
  transform: rotate(0deg);
}

.history-list {
  max-height: 200px;
  overflow-y: auto;
  background: white;
  border-radius: 10px;
  padding: 15px;
}

.history-item {
  padding: 8px;
  margin: 5px 0;
  background: #edf2f7;
  border-radius: 5px;
  font-size: 0.9em;
  display: flex;
  justify-content: space-between;
}

/* 学生历史记录样式 */
.student-history-modal .modal-content,
.group-history-modal .modal-content {
  max-width: 700px;
}

.history-items, .purchased-items {
  max-height: 400px;
  overflow-y: auto;
  margin: 15px 0;
}

.history-record, .purchased-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  margin: 5px 0;
  background: #f7fafc;
  border-radius: 8px;
}

.history-details, .purchase-details {
  flex: 1;
}

.history-date, .purchase-date {
  font-size: 0.8em;
  color: #718096;
}

.history-action, .purchase-item {
  font-weight: bold;
  color: #2d3748;
}

.undo-history-btn, .receive-btn {
  padding: 5px 10px;
  border: none;
  border-radius: 5px;
  background: #f56565;
  color: white;
  cursor: pointer;
  font-size: 0.8em;
  transition: all 0.3s ease;
}

.receive-btn {
  background: #48bb78;
}

.receive-btn.received {
  background: #cbd5e0;
  cursor: not-allowed;
}

.undo-history-btn:hover, .receive-btn:hover:not(.received) {
  transform: scale(1.05);
}

/* 统计样式 */
.statistics-modal .modal-content {
  max-width: 900px;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  border: 1px solid #e2e8f0;
  overflow: hidden;
}

.statistics-modal .modal-content h3 {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  margin: 0;
  padding: 25px 30px;
  font-size: 1.5em;
  text-align: center;
  border-bottom: 1px solid #e2e8f0;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.statistics-tabs {
  display: flex;
  margin: 20px 30px 15px 30px;
  background: #f7fafc;
  border-radius: 12px;
  padding: 5px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.statistics-tab {
  padding: 12px 0;
  border: none;
  background: transparent;
  cursor: pointer;
  font-weight: 600;
  color: #718096;
  transition: all 0.3s ease;
  flex: 1;
  border-radius: 8px;
  font-size: 0.95em;
}

.statistics-tab:hover {
  color: #5a67d8;
  background: rgba(102, 126, 234, 0.1);
}

.statistics-tab.active {
  color: #5a67d8;
  background: white;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.2);
}

.statistics-content {
  display: none;
  padding: 0 30px 30px 30px;
}

.statistics-content.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

.date-range-selector {
  display: flex;
  gap: 12px;
  margin: 20px 0;
  align-items: center;
  background: #f8fafc;
  padding: 15px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.date-range-selector label {
  font-weight: 600;
  color: #4a5568;
  white-space: nowrap;
}

.date-input {
  padding: 10px 12px;
  border: 1px solid #cbd5e0;
  border-radius: 8px;
  background: white;
  font-size: 0.95em;
  transition: all 0.3s ease;
}

.date-input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.statistics-table-container {
  max-height: 400px;
  overflow-y: auto;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  margin-top: 15px;
}

.statistics-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 0;
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.statistics-table th,
.statistics-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid #e2e8f0;
  transition: all 0.2s ease;
}

.statistics-table th {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  font-weight: 600;
  font-size: 0.95em;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.statistics-table tr:nth-child(even) {
  background: #fafbfc;
}

.statistics-table tr:hover {
  background: #f0f4ff;
  transform: translateX(2px);
}

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

/* 学生积分详情模态框样式 */
.statistics-detail-modal {
  max-width: 900px !important;
  padding: 25px;
}

.statistics-detail-modal .modal-header h3 {
  color: #2d3748;
  font-size: 1.5em;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 统计概览卡片 */
.statistics-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 15px;
  margin: 25px 0;
}

.stat-card {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-radius: 12px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  border: 1px solid #e2e8f0;
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
}

.stat-icon {
  font-size: 2em;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 50%;
  color: white;
}

.stat-info {
  flex: 1;
}

.stat-value {
  font-size: 1.8em;
  font-weight: bold;
  margin-bottom: 5px;
}

.stat-value.positive {
  color: #38a169;
}

.stat-value.negative {
  color: #e53e3e;
}

.stat-label {
  font-size: 0.9em;
  color: #718096;
  font-weight: 500;
}

/* 积分记录表格区域 */
.detail-records {
  margin-top: 30px;
}

.records-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 2px solid #e2e8f0;
}

.records-header h4 {
  color: #2d3748;
  font-size: 1.3em;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.records-filter {
  display: flex;
  gap: 8px;
}

.filter-btn {
  padding: 8px 16px;
  border: 1px solid #cbd5e0;
  background: white;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9em;
  transition: all 0.3s ease;
  color: #718096;
}

.filter-btn.active,
.filter-btn:hover {
  background: #667eea;
  color: white;
  border-color: #667eea;
}

.records-table-container {
  max-height: 400px;
  overflow-y: auto;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

.detail-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95em;
}

.detail-table th {
  background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
  padding: 15px 12px;
  text-align: left;
  font-weight: 600;
  color: #4a5568;
  border-bottom: 2px solid #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 10;
}

.detail-table th {
  /* 移除错误的flex布局，保持表格单元格的正常显示 */
}

.detail-table td {
  padding: 12px;
  border-bottom: 1px solid #f1f5f9;
}

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

.detail-table tr:hover {
  background-color: #f8fafc;
}

/* 记录行样式 */
.record-row.positive-record {
  background: linear-gradient(90deg, rgba(56, 161, 105, 0.05) 0%, transparent 100%);
}

.record-row.negative-record {
  background: linear-gradient(90deg, rgba(229, 62, 62, 0.05) 0%, transparent 100%);
}

.record-date {
  color: #718096;
  font-weight: 500;
  white-space: nowrap;
}

.record-type {
  font-weight: 600;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.85em;
}

.record-row.positive-record .record-type {
  background: #c6f6d5;
  color: #22543d;
}

.record-row.negative-record .record-type {
  background: #fed7d7;
  color: #742a2a;
}

.record-item {
  color: #2d3748;
  font-weight: 500;
}

.record-points {
  font-weight: bold;
  font-size: 1.1em;
}

.record-points.positive {
  color: #38a169;
}

.record-points.negative {
  color: #e53e3e;
}

.record-note {
  color: #718096;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 表格表头样式 */
.detail-table th {
  padding: 12px 8px;
  text-align: center;
  white-space: nowrap;
}

.th-icon {
  font-size: 1.1em;
  display: inline;
  margin-right: 4px;
}

.th-text {
  font-weight: 600;
  color: #2d3748;
  display: inline;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .statistics-overview {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
  }
  
  .stat-card {
    padding: 15px;
    flex-direction: column;
    text-align: center;
  }
  
  .stat-icon {
    width: 50px;
    height: 50px;
    font-size: 1.5em;
  }
  
  .records-header {
    flex-direction: column;
    gap: 15px;
    align-items: stretch;
  }
  
  .records-filter {
    justify-content: center;
  }
  
  .records-table-container {
    max-height: 300px;
  }
  
  .detail-table {
    font-size: 0.85em;
  }
  
  .detail-table th,
  .detail-table td {
    padding: 8px 6px;
  }
}

.statistics-summary {
  background: linear-gradient(135deg, #f0f4ff 0%, #e6f0ff 100%);
  padding: 20px;
  border-radius: 12px;
  margin: 20px 0;
  border-left: 4px solid #667eea;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.1);
}

/* 工具提示样式 */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltiptext {
  visibility: hidden;
  width: 200px;
  background-color: #2d3748;
  color: white;
  text-align: center;
  border-radius: 6px;
  padding: 8px;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s;
  font-size: 0.8em;
  font-weight: normal;
}

.tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

/* 随机点名样式 */
.random-name-modal .modal-content {
  max-width: 1100px;
  padding: 30px;                 /* 增加内边距 */
}

/* 增大名字泡泡容器 */
#nameBubblesContainer {
  min-height: 400px !important;  /* 确保足够高度 */
  height: 45vh !important;
}

/* 增大选中名字显示区域 */
#selectedName {
  font-size: 2.5em !important;      /* 从2em增加到2.5em */
  min-height: 80px !important;      /* 从60px增加到80px */
  padding: 25px !important;         /* 从20px增加到25px */
}

/* 增大记录区域 */
#randomRecordsList {
  max-height: 250px !important;     /* 从200px增加到250px */
  font-size: 1.1em !important;      /* 增大字体 */
}

/* 随机点名泡泡样式 - 需要添加到 styles.css */
.name-bubble-random {
  position: absolute;
  padding: 15px 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 25px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
  z-index: 10;
  min-width: 80px;
  text-align: center;
  user-select: none;
}

.name-bubble-random:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* 脉冲动画 */
@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* 计时器样式 */
.timer-modal .modal-content {
  max-width: 600px;
}

/* 计时器标签页 */
.timer-tabs {
  display: flex;
  margin-bottom: 15px;
  border-bottom: 1px solid #e2e8f0;
}

.timer-tab {
  padding: 10px 20px;
  border: none;
  background: none;
  cursor: pointer;
  font-weight: bold;
  color: #718096;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
  flex: 1;
}

.timer-tab.active {
  color: #5a67d8;
  border-bottom-color: #5a67d8;
}

.timer-tab-content {
  display: none;
}

.timer-tab-content.active {
  display: block;
}

.timer-container {
  display: flex;
  flex-direction: column;
  gap: 30px;
  margin: 20px 0;
}

.timer-section {
  background: #f7fafc;
  border-radius: 15px;
  padding: 20px;
}

.timer-section h4 {
  color: #5a67d8;
  margin-bottom: 15px;
  text-align: center;
}

.timer-display-large {
   font-size: 4em;
  font-weight: bold;
  color: #2d3748;
  text-align: center;
  margin: 20px 0;
  font-family: 'Courier New', monospace;
  background: #f7fafc;
  border-radius: 15px;
  padding: 20px;
  border: 3px solid #e2e8f0;
}

.time-inputs-large {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
  margin: 20px 0;
}

.time-input-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
}

.time-input-group input {
  width: 80px;
  padding: 12px;
  border: 2px solid #cbd5e0;
  border-radius: 8px;
  text-align: center;
  font-size: 1.2em;
}

.time-input-group span {
  font-size: 0.9em;
  color: #718096;
}

.timer-buttons {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.timer-laps {
  max-height: 150px;
  overflow-y: auto;
  margin-top: 15px;
  background: white;
  border-radius: 8px;
  padding: 10px;
}

.lap-item {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  border-bottom: 1px solid #e2e8f0;
}

.lap-item:last-child {
  border-bottom: none;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .main-content {
    flex-direction: column;
  }
  
  .left-content, .right-content {
    flex: 1;
  }
  
  .students-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
  
  .controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn {
    width: 100%;
  }
  
  .class-selector {
    min-width: 120px;
    font-size: 0.9em;
  }
  
  .class-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  
  .class-actions {
    align-self: flex-end;
  }
  
  .timer-display-large {
    font-size: 2.5em;
  }
  
  .time-inputs-large {
    flex-wrap: wrap;
  }
  
  .time-input-group input {
    width: 60px;
    font-size: 1em;
  }
  
  .date-range-selector {
    flex-direction: column;
    align-items: stretch;
  }
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

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

.student-card, .group-card, .ranking-item {
  animation: fadeIn 0.5s ease-out;
}

/* ===== 下拉菜单 ===== */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  min-width: 160px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 999;
  overflow: hidden;
}

.dropdown-content a {
  color: #333;
  padding: 10px 16px;
  text-decoration: none;
  display: block;
  cursor: pointer;
  transition: background .2s;
}

.dropdown-content a:hover {
  background: #f1f1f1;
}

.dropdown:hover .dropdown-content {
  display: block;
}

/* 规则平铺选择器样式 */
.rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  margin: 15px 0;
  max-height: 300px;
  overflow-y: auto;
  padding: 10px;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
}

.rule-option {
  display: flex;
  align-items: flex-start;
  padding: 12px;
  border: 2px solid #e2e8f0;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  background: white;
}

.rule-option:hover {
  border-color: #667eea;
  background: #f7fafc;
}

.rule-option input[type="checkbox"] {
  margin-right: 10px;
  transform: scale(1.2);
}

.rule-option label {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  flex: 1;
}

.rule-name {
  font-weight: 600;
  color: #2d3748;
  margin-bottom: 4px;
}

.rule-points {
  font-size: 0.9em;
  color: #718096;
  font-weight: 500;
}

.rule-option input[type="checkbox"]:checked + label .rule-name {
  color: #667eea;
}

.rule-option input[type="checkbox"]:checked + label .rule-points {
  color: #667eea;
  font-weight: 600;
}

.rule-option input[type="checkbox"]:checked ~ .rule-option {
  border-color: #667eea;
  background: #edf2f7;
}

.selected-rules-summary {
  background: #f7fafc !important;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 15px;
  margin-top: 15px;
}

.selected-rules-summary strong {
  color: #2d3748;
  display: block;
  margin-bottom: 8px;
}

#selectedRulesList,
#selectedGroupRulesList,
#selectedBatchStudentRulesList,
#selectedBatchGroupRulesList {
  color: #667eea;
  font-weight: 500;
}

#totalPoints,
#totalGroupPoints,
#totalBatchStudentPoints,
#totalBatchGroupPoints {
  color: #e53e3e;
  font-weight: 600;
  font-size: 1.1em;
}

/* 批量操作中的规则选择器特殊样式 */
#batchStudentRuleSelect .rules-grid,
#batchGroupRuleSelect .rules-grid {
  max-height: 200px;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
}

/* 模态框内容区域调整 */
.modal-content {
  max-width: 800px;
}

#ruleSelect,
#groupRuleSelect,
#batchStudentRuleSelect,
#batchGroupRuleSelect {
  max-height: 400px;
  overflow-y: auto;
}

/* 正负积分颜色区分 */
.rule-points.positive {
  color: #38a169; /* 绿色表示正分 */
}

.rule-points.negative {
  color: #e53e3e; /* 红色表示负分 */
}

/* 批量操作中的规则网格调整 */
#batchStudentRuleSelect .rules-grid,
#batchGroupRuleSelect .rules-grid {
  max-height: 250px;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 10px;
  background: white;
}

/* 批量操作模态框调整 */
#batchModal .modal-content {
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
}

/* 宠物批量应用模态框样式 */
#petBatchApplyModal .modal-content {
  max-width: 700px;
  max-height: 85vh;
  overflow-y: auto;
}

/* 技术支持模态窗口样式 */
.support-modal {
  max-width: 300px !important;
  width: 300px !important;
  padding: 10px !important;
  max-height: 410px !important;
  height: 410px !important;
}

.support-modal .image-container {
  padding: 0 !important;
  margin: 0 !important;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 390px;
  height: 390px;
}

.support-modal .support-image {
  max-width: 100% !important;
  max-height: 380px !important;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.support-modal .close-btn {
  position: absolute;
  top: 10px;
  right: 15px;
  background: none;
  border: none;
  font-size: 28px;
  color: #666;
  cursor: pointer;
  padding: 5px;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 10;
}

.support-modal .close-btn:hover {
  background: rgba(0, 0, 0, 0.1);
  color: #333;
}

.support-modal .loading {
  text-align: center;
  padding: 40px 20px;
  color: #667eea;
}

.support-modal .error-message {
  text-align: center;
  padding: 40px 20px;
  color: #e53e3e;
}

.selected-pet-info {
  background: linear-gradient(135deg, #f6f8fb, #e9ecef);
  border-radius: 8px;
  padding: 15px;
  margin-bottom: 20px;
  border: 1px solid #d1d9e0;
}

.selected-pet-info h4 {
  margin: 0 0 10px 0;
  color: #2d3748;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pet-batch-list-container {
  max-height: 300px;
  overflow-y: auto;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 12px;
  margin: 10px 0;
  background: white;
}

.pet-batch-students-checkbox {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
}

.pet-batch-student-checkbox {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  background: #f7fafc;
  transition: all 0.2s ease;
}

.pet-batch-student-checkbox:hover {
  border-color: #667eea;
  background: #edf2f7;
}

.pet-batch-student-checkbox input[type="checkbox"] {
  margin-right: 8px;
  transform: scale(1.1);
}

.pet-batch-student-checkbox label {
  cursor: pointer;
  font-size: 14px;
  color: #2d3748;
  flex: 1;
}

.pet-batch-select-all-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
  padding: 10px;
  background: #ebf8ff;
  border-radius: 6px;
  border: 1px solid #bee3f8;
}

.pet-batch-select-buttons {
  display: flex;
  gap: 10px;
}

.pet-batch-select-buttons .btn {
  padding: 5px 12px;
  font-size: 13px;
}

.pet-batch-current-pet {
  font-size: 12px;
  color: #718096;
  margin-top: 5px;
}

.batch-list-container {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 15px;
}

/* 危险操作区域样式 */
.danger-zone {
  background: #fff5f5;
  border-radius: 8px;
  padding: 15px;
}

.danger-zone h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.danger-zone .warning-text {
  background: #fed7d7;
  padding: 12px;
  border-radius: 6px;
  border-left: 4px solid #e53e3e;
  margin-bottom: 15px;
}

.danger-zone .btn-danger {
  background: linear-gradient(135deg, #e53e3e, #c53030);
  border: none;
  font-weight: 600;
  position: relative;
  overflow: hidden;
}

.danger-zone .btn-danger:hover {
  background: linear-gradient(135deg, #c53030, #9b2c2c);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(229, 62, 62, 0.3);
}

.danger-zone .btn-danger:active {
  transform: translateY(0);
}

/* 二次确认对话框样式 */
.double-confirm {
  background: #fffaf0;
  border: 2px solid #dd6b20;
  border-radius: 8px;
  padding: 20px;
  margin: 15px 0;
}

.double-confirm h5 {
  color: #dd6b20;
  margin-bottom: 10px;
}

.confirm-input {
  border: 2px solid #e53e3e;
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 14px;
  width: 100%;
  margin: 10px 0;
}

.confirm-input:focus {
  outline: none;
  border-color: #c53030;
  box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

/* 临时规则区域样式 */
.temp-rule-section {
  background: #f0fff4;
  border-radius: 8px;
  padding: 15px;
  margin: 15px 0;
}

.temp-rule-section h4 {
  color: #38a169;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.temp-rule-section .modal-input {
  border: 1px solid #c6f6d5;
  background: white;
}

.temp-rule-section .modal-input:focus {
  border-color: #38a169;
  box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.1);
}

.temp-rule-section .btn-info {
  background: linear-gradient(135deg, #38a169, #2f855a);
  border: none;
  font-weight: 600;
}

.temp-rule-section .btn-info:hover {
  background: linear-gradient(135deg, #2f855a, #276749);
  transform: translateY(-1px);
}

/* 批量操作中的学生/小组列表 - 网格布局 */
.batch-list-container {
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 12px;
  margin: 10px 0;
  background: white;
}

.students-checkbox {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
}

.student-checkbox {
  display: flex;
  align-items: center;
  padding: 8px 12px;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  background: #f7fafc;
  transition: all 0.2s ease;
}

.student-checkbox:hover {
  border-color: #667eea;
  background: #edf2f7;
}

.student-checkbox input[type="checkbox"] {
  margin-right: 8px;
  transform: scale(1.1);
}

.student-checkbox label {
  cursor: pointer;
  font-size: 14px;
  color: #2d3748;
  flex: 1;
}

/* 全选容器的特殊样式 */
.select-all-container {
  grid-column: 1 / -1; /* 全选横跨所有列 */
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border: 2px solid #667eea;
  border-radius: 6px;
  background: #ebf8ff;
  margin-bottom: 5px;
}

.select-all-container input[type="checkbox"] {
  margin-right: 10px;
  transform: scale(1.2);
}

.select-all-container label {
  font-weight: 600;
  color: #2d74b3;
  cursor: pointer;
}

/* 批量操作模态框调整 */
#batchModal .modal-content {
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .students-checkbox {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
  
  .student-checkbox {
    padding: 6px 8px;
  }
  
  .student-checkbox label {
    font-size: 13px;
  }
}

/* 紧凑版本（如果需要更密集的排列） */
.batch-list-container.compact {
  max-height: 150px;
}

.students-checkbox.compact {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 6px;
}

.student-checkbox.compact {
  padding: 6px 8px;
}

.student-checkbox.compact label {
  font-size: 13px;
}

/* 等级积分设置样式 */
.level-settings-section {
  background: white;
  padding: 15px;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

/* 等级积分设置区域独立滚动 */
#levelSettingsTab .level-settings-section {
  max-height: 300px;
  overflow-y: auto;
  margin-bottom: 15px;
}

#levelSettingsTab .level-settings-section:last-child {
  margin-bottom: 0;
}

#levelSettingsTab .level-settings-section::-webkit-scrollbar {
  width: 6px;
}

#levelSettingsTab .level-settings-section::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 3px;
}

#levelSettingsTab .level-settings-section::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 3px;
}

#levelSettingsTab .level-settings-section::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

.level-settings-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.level-setting-item {
  display: grid;
  grid-template-columns: 80px 1fr 1fr 60px;
  gap: 10px;
  align-items: center;
  padding: 12px;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  background: #f7fafc;
  transition: all 0.2s ease;
}

.level-setting-item:hover {
  border-color: #667eea;
  background: #edf2f7;
}

.level-setting-item .level-emoji {
  font-size: 1.5em;
  text-align: center;
}

.level-setting-item .level-name {
  font-weight: 600;
  color: #2d3748;
}

.level-setting-item input {
  padding: 6px 8px;
  border: 1px solid #cbd5e0;
  border-radius: 4px;
  font-size: 14px;
}

.level-setting-item input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.level-setting-item .level-range {
  font-size: 0.9em;
  color: #718096;
  text-align: center;
}

.score-settings {
  background: #f0fff4;
  padding: 15px;
  border-radius: 8px;
  border: 1px solid #c6f6d5;
}

.score-settings h5 {
  color: #2d3748;
  margin-bottom: 10px;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .level-setting-item {
    grid-template-columns: 60px 1fr 1fr;
    gap: 8px;
  }
  
  .level-setting-item .level-range {
    grid-column: 1 / -1;
    text-align: left;
    margin-top: 5px;
  }
}

/* ===== 等级自定义面板 ===== */
.level-image-upload{
  display:flex;
  align-items:center;
  gap:10px;
  margin:8px 0;
}
.level-image-upload img{
  width:60px;
  height:60px;
  object-fit:cover;
  border-radius:8px;
  border:1px solid #cbd5e0;
}
.level-image-upload input[type=file]{
  display:none;
}
.level-image-upload label{
  padding:4px 10px;
  background:#667eea;
  color:#fff;
  border-radius:5px;
  font-size:12px;
  cursor:pointer;
}

/* 等级设置：把宠物名称输入框右移，给上传图片按钮留空间 */
.level-setting-item input[id^="pet-name-"] {
  margin-left: 60px;   /* 微调距离，可自己再增减 */
}

/* 1. 让第一列宽一点，给图片+按钮留足横向空间 */
/* 注意：网格布局已在上面定义，此处不需要重复定义 */

/* 2. 让图片区内部横向排，且自动换行 */
.level-image-upload {
  display: flex;
  flex-wrap: wrap;          /* 关键：允许换行 */
  justify-content: center;  /* 居中好看 */
  gap: 6px;
  word-break: break-word;   /* 长单词断开 */
}

/* 3. 按钮文字不再强制不换行 */
.level-image-upload label {
  white-space: normal;      /* 默认是 nowrap，改掉 */
  font-size: 12px;
  text-align: center;
}

/* 全屏模式样式 */
body:fullscreen .main-container {
  padding: 20px;
  max-width: 100%;
}

body:fullscreen {
  overflow: auto;
}

/* 全屏按钮激活状态 */
.fullscreen-active {
  background-color: #4a5568 !important;
}

/* 宠物颜色等级 */
.pet-level-1 { background: linear-gradient(135deg, #FF6B6B 0%, #FF8E8E 100%); }
.pet-level-2 { background: linear-gradient(135deg, #4ECDC4 0%, #6AFFEF 100%); }
.pet-level-3 { background: linear-gradient(135deg, #FFD166 0%, #FFE8A3 100%); }
.pet-level-4 { background: linear-gradient(135deg, #06D6A0 0%, #4AFFC9 100%); }
.pet-level-5 { background: linear-gradient(135deg, #118AB2 0%, #4BC9F0 100%); }
.pet-level-6 { background: linear-gradient(135deg, #073B4C 0%, #0A5F7A 100%); color: white; }
.pet-level-7 { background: linear-gradient(135deg, #7209B7 0%, #9D4EDD 100%); color: white; }
.pet-level-8 { background: linear-gradient(135deg, #F72585 0%, #FF70B3 100%); color: white; }
.pet-level-9 { background: linear-gradient(135deg, #FF9E00 0%, #FFC46B 100%); }
.pet-level-10 { background: linear-gradient(135deg, #FF0000 0%, #FF6B6B 100%); color: white; }

/* 进度条颜色 */
.progress-level-1 { background: linear-gradient(90deg, #FF6B6B, #FF8E8E); }
.progress-level-2 { background: linear-gradient(90deg, #4ECDC4, #6AFFEF); }
.progress-level-3 { background: linear-gradient(90deg, #FFD166, #FFE8A3); }
.progress-level-4 { background: linear-gradient(90deg, #06D6A0, #4AFFC9); }
.progress-level-5 { background: linear-gradient(90deg, #118AB2, #4BC9F0); }
.progress-level-6 { background: linear-gradient(90deg, #073B4C, #0A5F7A); }
.progress-level-7 { background: linear-gradient(90deg, #7209B7, #9D4EDD); }
.progress-level-8 { background: linear-gradient(90deg, #F72585, #FF70B3); }
.progress-level-9 { background: linear-gradient(90deg, #FF9E00, #FFC46B); }
.progress-level-10 { background: linear-gradient(90deg, #FF0000, #FF6B6B); }

/* 全局关闭按钮样式 */
.modal-close-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  font-size: 24px;
  color: white;
  cursor: pointer;
  padding: 5px;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  font-weight: bold;
}

.modal-close-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.modal-close-btn:active {
  transform: scale(0.95);
}

/* 安全设置区域样式 */
.security-section {
  background: white;
  padding: 20px;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  margin-bottom: 15px;
}

.security-section h4 {
  color: #2d3748;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.security-section h4::before {
  content: "🔒";
  font-size: 1.2em;
}

.security-section:last-child h4::before {
  content: "⚠️";
}

.security-section label {
  font-weight: 600;
  color: #4a5568;
  margin-right: 10px;
}

.security-section input[type="password"] {
  padding: 8px 12px;
  border: 2px solid #e2e8f0;
  border-radius: 6px;
  font-size: 14px;
  width: 200px;
}

.security-section input[type="password"]:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.security-section .btn {
  margin-left: 10px;
}

.security-section p {
  color: #718096;
  font-size: 0.9em;
  line-height: 1.4;
}

/* ===== 学生排序控制组件样式 ===== */
.sort-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 2px solid #e2e8f0;
  border-radius: 6px;
  background: white;
  color: #4a5568;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.sort-btn:hover {
  border-color: #667eea;
  background: #f7fafc;
}

.sort-btn.active {
  border-color: #667eea;
  background: #667eea;
  color: white;
}

.sort-btn.active .sort-arrow {
  font-weight: bold;
  transform: scale(1.2);
}

.sort-btn:not(.active) .sort-arrow {
  opacity: 0.5;
}

.sort-arrow {
  font-size: 12px;
  transition: all 0.3s ease;
  display: inline-block;
}

/* 排序按钮激活状态的更明显视觉反馈 */
.sort-btn.active {
  box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.3);
  transform: translateY(-1px);
}

.sort-btn:active {
  transform: translateY(0);
}

/* ===== 双按钮排序组件样式 ===== */
.sort-buttons-group {
  display: flex;
  align-items: center;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  overflow: hidden;
  background: white;
}

.sort-buttons-group .sort-btn {
  border: none;
  border-radius: 0;
  margin: 0;
  flex: 1;
  min-width: 80px;
  justify-content: center;
}

.sort-buttons-group .sort-btn:first-child {
  border-right: 1px solid #d1d5db;
}

.sort-buttons-group .sort-btn:last-child {
  border-left: none;
}

.sort-buttons-group .sort-btn.active {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.sort-buttons-group .sort-btn:not(.active) {
  background: #f8f9fa;
}

.sort-buttons-group .sort-btn:not(.active):hover {
  background: #e9ecef;
}

/* 排序分隔线 */
.sort-separator {
  width: 1px;
  height: 24px;
  background: #d1d5db;
}

/* 排序状态指示器 */
.sort-status {
  font-size: 12px;
  color: #718096;
  font-style: italic;
}

/* 加载状态提示 */
.sort-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.7;
}

.sort-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid #ffffff;
  border-radius: 50%;
  border-top: 2px solid transparent;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===== 备份管理功能样式 ===== */

/* 备份设置区域样式 */
.backup-settings {
  background: white;
  padding: 20px;
  border-radius: 8px;
  border: 1px solid #e2e8f0;
  margin-bottom: 15px;
}

.backup-settings h4 {
  color: #2d3748;
  margin-bottom: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.backup-settings h4::before {
  content: "💾";
  font-size: 1.2em;
}

.backup-settings label {
  font-weight: 600;
  color: #4a5568;
  margin-right: 10px;
  min-width: 80px;
  display: inline-block;
}

.backup-settings select,
.backup-settings input[type="text"] {
  padding: 8px 12px;
  border: 2px solid #e2e8f0;
  border-radius: 6px;
  font-size: 14px;
  margin: 0 10px 10px 0;
  transition: border-color 0.3s ease;
}

.backup-settings select:focus,
.backup-settings input[type="text"]:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.backup-settings .btn {
  margin: 5px;
  padding: 10px 16px;
  font-size: 0.9em;
}

.backup-status {
  background: #f0fff4;
  border: 1px solid #c6f6d5;
  border-radius: 8px;
  padding: 15px;
  margin-top: 15px;
}

.backup-status p {
  margin: 5px 0;
  color: #2d3748;
  font-size: 0.9em;
}

.backup-status .status-running {
  color: #38a169;
  font-weight: 600;
}

.backup-status .status-stopped {
  color: #e53e3e;
  font-weight: 600;
}

/* 备份管理模态框样式 */
.backup-manager {
  background: white;
  border-radius: 12px;
  padding: 0;
  max-width: 800px;
  max-height: 600px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.backup-manager-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  border-bottom: 1px solid #e2e8f0;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.backup-manager-header h3 {
  margin: 0;
  font-size: 1.3em;
  font-weight: 600;
}

.backup-manager-close {
  background: none;
  border: none;
  color: white;
  font-size: 1.5em;
  cursor: pointer;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.backup-manager-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.backup-manager-stats {
  display: flex;
  gap: 20px;
  padding: 15px 25px;
  background: #f8fafc;
  border-bottom: 1px solid #e2e8f0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-label {
  font-size: 0.85em;
  color: #718096;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 1.2em;
  font-weight: 600;
  color: #2d3748;
}

.backup-list {
  flex: 1;
  overflow-y: auto;
  padding: 0;
}

.backup-list-header {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 15px;
  padding: 12px 25px;
  background: #f1f5f9;
  border-bottom: 1px solid #e2e8f0;
  font-weight: 600;
  color: #475569;
  font-size: 0.9em;
}

.backup-item {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 15px;
  align-items: center;
  padding: 15px 25px;
  border-bottom: 1px solid #f1f5f9;
  transition: background-color 0.3s ease;
}

.backup-item:hover {
  background: #f8fafc;
}

.backup-item:last-child {
  border-bottom: none;
}

.backup-info {
  display: contents;
}

.backup-info strong {
  color: #2d3748;
  font-size: 0.95em;
  font-weight: 500;
}

.backup-count {
  color: #64748b;
  font-size: 0.9em;
  text-align: center;
  min-width: 60px;
}

.backup-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.backup-actions .btn {
  padding: 6px 12px;
  font-size: 0.8em;
  border-radius: 4px;
  min-width: 60px;
}

.backup-manager-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 20px 25px;
  border-top: 1px solid #e2e8f0;
  background: #f8fafc;
}

.backup-manager-footer .btn {
  min-width: 100px;
}

/* 自定义备份路径区域 */
#customBackupPath {
  background: #f7fafc;
  border: 1px solid #e2e8f0;
  border-radius: 6px;
  padding: 15px;
  margin: 10px 0;
}

#customBackupPath label {
  font-weight: 600;
  color: #4a5568;
  margin-bottom: 8px;
  display: block;
}

#customBackupPath input[type="text"] {
  width: calc(100% - 120px);
  margin-right: 10px;
}

/* 备份操作按钮组 */
.backup-buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 20px;
  flex-wrap: wrap;
}

.backup-buttons .btn {
  flex: 1;
  min-width: 120px;
  max-width: 200px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .backup-settings label {
    min-width: auto;
    display: block;
    margin-bottom: 5px;
  }
  
  .backup-settings select,
  .backup-settings input[type="text"] {
    width: 100%;
    margin: 0 0 10px 0;
  }
  
  .backup-item {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }
  
  .backup-actions {
    justify-content: center;
    margin-top: 10px;
  }
  
  .backup-buttons {
    flex-direction: column;
  }
  
  .backup-buttons .btn {
    max-width: none;
  }
}