/* ========================================/*
   阿常悬浮积分箱后台管理 - 样式表
   ======================================== */

/* CSS 变量定义 */
:root {
    --primary-color: #7B68EE;
    --primary-light: #9B89EE;
    --primary-dark: #6B5BDE;
    --primary-bg: #F0E6FF;
    
    --secondary-color: #FF6B6B;
    --secondary-light: #FF8E8E;
    --success-color: #4CAF50;
    --warning-color: #FFD700;
    --danger-color: #ef4444;
    --info-color: #4A90D9;
    
    --bg-primary: #F8F9FA;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F5F5F5;
    
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --text-light: #FFFFFF;
    
    --border-color: #E8E8E8;
    --border-light: #F0F0F0;
    
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
    --sidebar-width: 240px;
}

/* 配色方案 */
[data-theme="blue"] {
    --primary-color: #4A90D9;
    --primary-light: #6BA5E7;
    --primary-dark: #3A7BC8;
    --primary-bg: #E3F2FD;
}

[data-theme="green"] {
    --primary-color: #4CAF50;
    --primary-light: #66BB6A;
    --primary-dark: #43A047;
    --primary-bg: #E8F5E9;
}

[data-theme="pink"] {
    --primary-color: #FF6B9D;
    --primary-light: #FF8FB0;
    --primary-dark: #E91E63;
    --primary-bg: #FCE4EC;
}

[data-theme="orange"] {
    --primary-color: #FF8C42;
    --primary-light: #FFA726;
    --primary-dark: #F57C00;
    --primary-bg: #FFF3E0;
}

[data-theme="dark"] {
    --primary-color: #6366F1;
    --primary-light: #818CF8;
    --primary-dark: #4F46E5;
    --primary-bg: #1E1E2E;
    
    --bg-primary: #0F0F1A;
    --bg-secondary: #1E1E2E;
    --bg-tertiary: #2D2D44;
    
    --text-primary: #E8E8F0;
    --text-secondary: #A0A0B0;
    --text-tertiary: #707080;
    
    --border-color: #2D2D44;
    --border-light: #3D3D5C;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.emoji {
    font-family: "Segoe UI Emoji", "Segoe UI Symbol", "Apple Color Emoji", "Noto Color Emoji", sans-serif;
    font-style: normal;
    font-weight: normal;
    display: inline-block;
    vertical-align: middle;
}

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 16px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-left {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

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

.nav-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: none;
    background: var(--primary-bg);
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
}

.nav-icon {
    font-size: 16px;
}

/* ========================================
   主内容区域布局
   ======================================== */
.main-content {
    flex: 1;
    padding: 0;
    overflow: hidden;
}

.admin-layout {
    display: flex;
    height: calc(100vh - 64px);
}

/* ========================================
   左侧菜单
   ======================================== */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 20px 0;
    overflow-y: auto;
    flex-shrink: 0;
}

.menu-section {
    margin-bottom: 24px;
}

.menu-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0 20px;
    margin-bottom: 8px;
}

.menu-list {
    list-style: none;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.menu-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
}

.menu-item.active {
    background-color: var(--primary-bg);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
    font-weight: 500;
}

.menu-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

/* ========================================
   右侧内容区
   ======================================== */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
    background-color: var(--bg-primary);
}

.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

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

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.page-header {
    margin-bottom: 24px;
}

.page-header h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

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

.page-content {
    max-width: 1400px;
}

/* ========================================
   设置区块
   ======================================== */
.settings-section {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 20px;
}

.settings-section h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

/* 配色方案 */
.theme-options {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 16px;
}

.theme-card {
    text-align: center;
    cursor: pointer;
    padding: 12px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    transition: all var(--transition-fast);
}

.theme-card:hover {
    background-color: var(--bg-tertiary);
}

.theme-card.active {
    border-color: var(--primary-color);
    background-color: var(--primary-bg);
}

.theme-preview {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-sm);
    margin: 0 auto 8px;
    box-shadow: var(--shadow-sm);
}

.purple-theme { background: linear-gradient(135deg, #7B68EE, #9B89EE); }
.blue-theme { background: linear-gradient(135deg, #4A90D9, #6BA5E7); }
.green-theme { background: linear-gradient(135deg, #4CAF50, #66BB6A); }
.pink-theme { background: linear-gradient(135deg, #FF6B9D, #FF8FB0); }
.orange-theme { background: linear-gradient(135deg, #FF8C42, #FFA726); }
.dark-theme { background: linear-gradient(135deg, #1E1E2E, #2D2D44); }

.theme-card span {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 等级配置 */
.level-config {
    display: grid;
    grid-template-columns: repeat(10, 1fr);
    gap: 8px;
}

.level-item {
    text-align: center;
}

.level-item label {
    display: block;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.level-item input {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    text-align: center;
}

.level-item input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 灰色图片时间设置 */
.gray-image-config {
    display: flex;
    align-items: center;
}

.gray-image-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.gray-image-input-group label {
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.gray-image-input {
    width: 80px;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    text-align: center;
}

.gray-image-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.gray-image-unit {
    font-size: 14px;
    color: var(--text-secondary);
}

/* 应用名称设置 */
.app-name-config {
    display: flex;
    align-items: center;
}

.app-name-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    max-width: 400px;
}

.app-name-input-group label {
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.app-name-input {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
}

.app-name-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 养成系统选择设置 */
.system-selector-config {
    display: flex;
    align-items: center;
}

.system-selector-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    max-width: 400px;
}

.system-selector-input-group label {
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.system-select {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
}

.system-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 当前系统状态显示 */
.current-system-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    margin-top: 12px;
    border: 1px solid var(--border-color);
}

.current-system-status .status-icon {
    font-size: 20px;
}

.current-system-status .status-text {
    font-size: 14px;
    color: var(--text-secondary);
}

.current-system-status strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* 系统切换指示器 */
.system-switch-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: rgba(102, 126, 234, 0.1);
    border-radius: var(--radius-sm);
    animation: pulse 1.5s ease-in-out infinite;
}

.system-switch-indicator .switch-loading {
    font-size: 13px;
    color: var(--primary-color);
    font-weight: 500;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

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

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

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

/* 保存按钮 */
.save-settings-btn {
    width: 100%;
    padding: 16px;
    background-color: var(--primary-color);
    color: var(--text-light);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

/* ========================================
   添加按钮
   ======================================== */
.add-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px;
    margin-bottom: 16px;
    background-color: var(--primary-bg);
    color: var(--primary-color);
    border: 2px dashed var(--primary-color);
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.add-btn:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
    border-style: solid;
}

.add-btn span {
    font-size: 20px;
}

/* ========================================
   列表项通用样式
   ======================================== */
.list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}

.list-item:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--primary-color);
}

.list-item-info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.list-item-icon {
    font-size: 32px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.list-item-details h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.list-item-details p {
    font-size: 13px;
    color: var(--text-secondary);
}

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

.action-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    font-size: 16px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.action-btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
}

.action-btn.delete:hover {
    color: var(--secondary-color);
}

/* ========================================
   系统管理
   ======================================== */
.system-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ========================================
   实体管理
   ======================================== */
.entity-management {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.entity-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
}

.entity-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.entity-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.entity-preview {
    width: 80px;
    height: 80px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.entity-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.entity-preview .emoji {
    font-size: 48px;
}

.entity-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

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

/* 实体图片上传 */
.entity-image-upload {
    margin-top: 8px;
}

.image-upload-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-bottom: 12px;
}

.image-upload-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.image-upload-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.image-upload-placeholder .level-number {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.image-upload-placeholder .upload-icon {
    font-size: 24px;
    color: var(--text-tertiary);
    font-weight: 300;
}

.image-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 2px solid var(--primary-color);
}

.image-remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--danger-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 14px;
    cursor: pointer;
    opacity: 0;
    transition: all var(--transition-fast);
    z-index: 10;
}

.image-upload-item:hover .image-remove-btn {
    opacity: 1;
}

.image-remove-btn:hover {
    background-color: #dc2626;
    transform: scale(1.1);
}

.upload-hint {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 8px;
    text-align: center;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .image-upload-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .image-upload-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
}

/* ========================================
   商品管理
   ======================================== */
.products-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.product-item {
    display: flex;
    align-items: center;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.product-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.product-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 28px;
    margin-right: 16px;
}

.product-info {
    flex: 1;
}

.product-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.product-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

/* ========================================
   兑换记录
   ======================================== */
.records-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.record-item {
    display: flex;
    align-items: center;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.record-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 24px;
    margin-right: 16px;
}

.record-info {
    flex: 1;
}

.record-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.record-meta {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.record-meta .price {
    color: var(--secondary-color);
    font-weight: 600;
}

.record-meta .time {
    color: var(--text-tertiary);
}

.record-title .student-name {
    color: var(--primary-color);
    font-weight: 600;
}

.record-title .product-name {
    color: var(--secondary-color);
    font-weight: 600;
}

.record-meta .item-name {
    background-color: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.record-item.empty .record-icon,
.record-item.error .record-icon {
    background-color: var(--bg-tertiary);
}

.record-item.error .record-title {
    color: var(--danger-color);
}

/* 分页样式 */
.pagination {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

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

.page-buttons {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
}

.page-btn {
    padding: 6px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
}

.page-btn:hover {
    background-color: var(--bg-tertiary);
    border-color: var(--primary-color);
}

.page-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-light);
}

.page-ellipsis {
    padding: 6px 8px;
    color: var(--text-tertiary);
    font-size: 13px;
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    font-size: 14px;
}

.record-points {
    font-size: 16px;
    font-weight: 700;
    color: var(--secondary-color);
}

/* 兑换记录操作按钮 */
.records-actions {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    gap: 16px;
}

.records-actions .batch-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.records-actions > .btn-danger {
    margin-left: 0;
}

/* 每页显示条数选择器 */
.page-size-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.page-size-selector label {
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.page-size-selector select {
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.page-size-selector select:hover {
    border-color: var(--primary-color);
}

.page-size-selector select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-color-alpha, rgba(139, 92, 246, 0.2));
}

/* 确认对话框 */
.confirm-dialog {
    padding: 8px 0;
}

.confirm-message {
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.confirm-buttons {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* 危险按钮样式 */
.btn-danger {
    background-color: var(--danger-color, #ef4444);
    color: white;
    border: none;
}

.btn-danger:hover {
    background-color: #dc2626;
}

/* 次要按钮样式 */
.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

/* 主要按钮样式 */
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
}

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

/* 兑换记录筛选区域 */
.records-filter {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    margin-bottom: 16px;
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.filter-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-item label {
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.filter-input {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.filter-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 日期选择器样式 */
.date-picker-wrapper {
    position: relative;
    display: inline-block;
}

.date-input {
    padding-right: 36px;
    cursor: pointer;
    min-width: 120px;
}

.date-icon {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    font-size: 16px;
}

.date-picker-popup {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 4px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    padding: 12px;
    z-index: 1000;
    min-width: 280px;
    display: none;
}

.date-picker-popup.active {
    display: block;
}

.date-picker-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.date-picker-title {
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
}

.date-nav {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.date-nav:hover {
    background-color: var(--bg-tertiary);
    color: var(--primary-color);
}

.date-picker-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 8px;
}

.date-picker-weekdays span {
    text-align: center;
    font-size: 12px;
    color: var(--text-secondary);
    padding: 4px;
}

.date-picker-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.date-picker-days .day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    color: var(--text-primary);
}

.date-picker-days .day:hover {
    background-color: var(--primary-bg);
    color: var(--primary-color);
}

.date-picker-days .day.selected {
    background-color: var(--primary-color);
    color: white;
}

.date-picker-days .day.today {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.date-picker-days .day.today.selected {
    background-color: var(--primary-color);
    color: white;
}

.date-picker-days .day.empty {
    cursor: default;
}

.date-picker-footer {
    display: flex;
    justify-content: space-between;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

/* 批量操作区域 */
.batch-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.select-all-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
}

.select-all-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* 记录项复选框 */
.record-checkbox {
    display: flex;
    align-items: center;
    margin-right: 12px;
    cursor: pointer;
}

.record-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* 禁用按钮样式 */
.btn-danger:disabled {
    background-color: var(--text-tertiary);
    cursor: not-allowed;
}

/* ========================================
   学生管理
   ======================================== */
.student-management-btns {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.add-student-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex: 1;
    padding: 14px;
    background-color: var(--primary-color);
    color: var(--text-light);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.add-student-btn.secondary {
    background-color: var(--info-color);
}

.add-student-btn.secondary:hover {
    background-color: #3A7BC8;
}

.add-student-btn.danger {
    background-color: var(--secondary-color);
}

.add-student-btn.danger:hover {
    background-color: #E55A5A;
}

.add-student-btn.success {
    background-color: var(--success-color);
}

.add-student-btn.success:hover {
    background-color: #3D8B40;
}

.add-student-btn.warning {
    background-color: #E67E22;
}

.add-student-btn.warning:hover {
    background-color: #D35400;
}

.student-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.student-item {
    display: flex;
    align-items: center;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.student-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.student-avatar {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: 50%;
    font-size: 24px;
    margin-right: 16px;
}

.student-info {
    flex: 1;
}

.student-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

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

/* ========================================
   班级管理
   ======================================== */
.class-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.class-item {
    display: flex;
    align-items: center;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.class-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.class-item.current {
    border-color: var(--primary-color);
    background-color: var(--primary-bg);
}

.class-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 24px;
    margin-right: 16px;
}

.class-info {
    flex: 1;
}

.class-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

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

/* 班级复选框样式 */
.class-checkbox {
    margin-right: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.class-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

/* 班级工具栏样式 */
.classes-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    gap: 16px;
    flex-wrap: wrap;
}

.classes-toolbar .batch-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.classes-toolbar .select-all-label {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    user-select: none;
}

.classes-toolbar .select-all-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

/* ========================================
   模态框
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    width: 100%;
    max-width: 650px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
}

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

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

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-tertiary);
    font-size: 24px;
    cursor: pointer;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: 24px;
    max-height: calc(90vh - 80px);
    overflow-y: auto;
}

/* 模态框表单 */
.modal-form .form-group {
    margin-bottom: 20px;
}

.modal-form label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.modal-form input,
.modal-form select,
.modal-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.modal-form textarea {
    resize: vertical;
    min-height: 100px;
}

.modal-form input:focus,
.modal-form select:focus,
.modal-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

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

.modal-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-btn.primary {
    background-color: var(--primary-color);
    color: var(--text-light);
}

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

.modal-btn.secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

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

.modal-btn.delete {
    background-color: var(--secondary-color);
    color: var(--text-light);
}

.modal-btn.delete:hover {
    background-color: #E55A5A;
}

/* ========================================
   Toast 提示
   ======================================== */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background-color: var(--text-primary);
    color: var(--text-light);
    padding: 14px 24px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    opacity: 0;
    transition: all 0.3s ease;
}

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

.toast.success {
    background-color: var(--success-color);
}

.toast.error {
    background-color: var(--secondary-color);
}

.toast.warning {
    background-color: #f59e0b;
}

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

.toast-icon {
    font-size: 18px;
}

.toast-message {
    font-size: 14px;
    font-weight: 500;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 992px) {
    .admin-layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .menu-list {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        padding: 0 16px;
    }
    
    .menu-item {
        padding: 8px 16px;
        border-left: none;
        border-radius: var(--radius-sm);
    }
    
    .menu-item.active {
        border-left: none;
    }
    
    .level-config {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 576px) {
    .navbar {
        padding: 0 16px;
    }
    
    .nav-title {
        font-size: 16px;
    }
    
    .content-area {
        padding: 16px;
    }
    
    .level-config {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .theme-options {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .student-management-btns {
        flex-direction: column;
    }
    
    .list-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .list-item-actions {
        width: 100%;
        justify-content: flex-end;
    }
}

/* ========================================
   滚动条样式
   ======================================== */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* 选中文本样式 */
::selection {
    background-color: var(--primary-bg);
    color: var(--primary-color);
}

/* ========================================
   积分项目管理
   ======================================== */
.score-items-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.score-items-tabs .tab-item {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.score-items-tabs .tab-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.score-items-tabs .tab-item.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background-color: var(--primary-bg);
    font-weight: 600;
}

.score-items-tabs .tab-item[data-tab="add"].active {
    color: #4CAF50;
    border-bottom-color: #4CAF50;
    background-color: #E8F5E9;
}

.score-items-tabs .tab-item[data-tab="deduct"].active {
    color: #F44336;
    border-bottom-color: #F44336;
    background-color: #FFEBEE;
}

/* ========================================
   商品类型标签切换
   ======================================== */
.product-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.product-tabs .tab-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.product-tabs .tab-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.product-tabs .tab-item.active {
    font-weight: 600;
}

.product-tabs .tab-item[data-tab="online"].active {
    color: #4CAF50;
    border-bottom-color: #4CAF50;
    background-color: #E8F5E9;
}

.product-tabs .tab-item[data-tab="offline"].active {
    color: #FF9800;
    border-bottom-color: #FF9800;
    background-color: #FFF3E0;
}

.product-tabs .tab-desc {
    font-size: 12px;
    font-weight: 400;
    opacity: 0.8;
}

.score-items-section {
    margin-bottom: 24px;
}

.score-items-section .section-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.score-items-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.score-item-card {
    display: flex;
    align-items: center;
    padding: 16px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.score-item-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.score-item-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 28px;
    margin-right: 16px;
}

.score-item-info {
    flex: 1;
}

.score-item-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.score-item-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

.score-points {
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
}

.score-points.positive {
    background-color: #E8F5E9;
    color: #4CAF50;
}

.score-points.negative {
    background-color: #FFEBEE;
    color: #F44336;
}

.score-items-list .empty-state {
    text-align: center;
    padding: 32px;
    color: var(--text-tertiary);
    font-size: 14px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

/* ========================================
   小组管理
   ======================================== */
.groups-toolbar {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin-bottom: 20px;
}

.groups-controls {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.groups-controls .form-group {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
}

.groups-controls .form-group label {
    font-size: 14px;
    color: var(--text-secondary);
    white-space: nowrap;
}

.group-count-input {
    width: 70px;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    text-align: center;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.group-count-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.groups-info {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-secondary);
}

.groups-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.group-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.group-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background-color: var(--primary-bg);
    border-bottom: 1px solid var(--border-color);
}

.group-name {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-color);
}

.group-number {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-size: 14px;
    font-weight: 700;
}

.group-actions {
    display: flex;
    gap: 6px;
}

.group-action-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    transition: all var(--transition-fast);
}

.group-action-btn:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.group-action-btn.delete:hover {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
}

.group-members {
    padding: 12px;
    min-height: 120px;
    border: 2px dashed transparent;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

/* 确保空状态下的拖放区域也能接收事件 */
.group-members.is-empty::before {
    content: '暂无成员，拖拽学生到此处';
    display: block;
    text-align: center;
    padding: 40px 12px;
    color: var(--text-tertiary);
    font-size: 13px;
    pointer-events: none;
}

/* 拖放时的视觉反馈 */
.group-members.drag-over {
    background-color: var(--primary-bg);
    border-color: var(--primary-color);
    border-style: dashed;
}

.group-member-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    margin-bottom: 6px;
    background-color: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    cursor: grab;
    transition: all var(--transition-fast);
}

.group-member-item:hover {
    background-color: var(--primary-bg);
}

.group-member-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.group-member-item .member-avatar {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-secondary);
    border-radius: 50%;
    font-size: 14px;
}

.group-member-item .member-name {
    flex: 1;
    font-size: 13px;
    color: var(--text-primary);
}

.group-member-item .member-score {
    font-size: 12px;
    color: var(--text-tertiary);
}

.group-member-item .remove-member-btn {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-size: 12px;
    opacity: 0;
    transition: all var(--transition-fast);
}

.group-member-item:hover .remove-member-btn {
    opacity: 1;
}

.group-member-item .remove-member-btn:hover {
    color: var(--danger-color);
}

.group-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background-color: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-secondary);
}

.group-footer .member-count {
    font-weight: 500;
}

.group-footer .avg-score {
    font-weight: 600;
    color: var(--primary-color);
}

/* 未分组学生区域 */
.ungrouped-section {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 2px dashed var(--border-color);
}

.ungrouped-section h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ungrouped-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 60px;
    padding: 12px;
    border: 2px dashed transparent;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

/* 未分组区域的拖放样式 */
.ungrouped-list.drag-over {
    background-color: var(--primary-bg);
    border-color: var(--primary-color);
}

.ungrouped-student {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: grab;
    transition: all var(--transition-fast);
}

.ungrouped-student:hover {
    border-color: var(--primary-color);
    background-color: var(--primary-bg);
}

.ungrouped-student.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.ungrouped-student .student-avatar {
    font-size: 16px;
}

.ungrouped-student .student-name {
    font-size: 13px;
    color: var(--text-primary);
}

.ungrouped-student .student-score {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-left: 4px;
}

/* 拖拽时的样式 */
.drag-over {
    background-color: var(--primary-bg) !important;
    border-color: var(--primary-color) !important;
    border-style: dashed !important;
    box-shadow: inset 0 0 0 2px var(--primary-color);
}

/* 小组管理空状态 */
.groups-empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-tertiary);
}

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

.groups-empty-state .empty-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.groups-empty-state .empty-desc {
    font-size: 14px;
    margin-bottom: 24px;
}

/* 添加按钮次要样式 */
.add-btn.secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

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

/* 添加按钮成功样式 */
.add-btn.success {
    background-color: #ecfdf5;
    color: #059669;
    border: 1px solid #34d399;
}

.add-btn.success:hover {
    background-color: #059669;
    color: white;
}

/* 添加按钮警告样式 */
.add-btn.warning {
    background-color: #fffbeb;
    color: #d97706;
    border: 1px solid #fbbf24;
}

.add-btn.warning:hover {
    background-color: #d97706;
    color: white;
}

/* 添加按钮危险样式 */
.add-btn.danger {
    background-color: #fef2f2;
    color: #dc2626;
    border: 1px solid #fca5a5;
}

.add-btn.danger:hover {
    background-color: #dc2626;
    color: white;
}

/* 工具栏样式 */
.toolbar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.toolbar .add-btn {
    width: auto;
    padding: 10px 20px;
    margin-bottom: 0;
    white-space: nowrap;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .groups-container {
        grid-template-columns: 1fr;
    }

    .groups-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .groups-controls .form-group {
        justify-content: space-between;
    }
}

/* ========================================
   批量导入学生 - 导入标签页
   ======================================== */
.import-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.import-tab {
    flex: 1;
    padding: 12px 16px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
}

.import-tab:hover {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.import-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    font-weight: 600;
}

.import-area {
    animation: fadeIn 0.2s ease;
}

/* 文件上传区域 */
.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-sm);
    padding: 32px 24px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    background-color: var(--bg-tertiary);
}

.file-upload-area:hover {
    border-color: var(--primary-color);
    background-color: var(--primary-bg);
}

.file-upload-area .upload-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.file-upload-area .upload-text {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.file-upload-area .upload-hint {
    font-size: 13px;
    color: var(--text-tertiary);
}

/* 学生成绩显示 */
.student-score {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    background-color: #E3F2FD;
    color: #1976D2;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-left: 8px;
}

.student-score::before {
    content: '📊';
    font-size: 10px;
}

/* ========================================
   学生列表 - 人数统计
   ======================================== */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.page-header-left {
    flex: 1;
}

.student-count-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background-color: var(--primary-bg);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    color: var(--primary-color);
    font-size: 14px;
    white-space: nowrap;
}

.student-count-badge .count-icon {
    font-size: 18px;
}

.student-count-badge .count-text strong {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ========================================
   权限不足提示模态框
   ======================================== */
.access-denied-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

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

.access-denied-content {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 420px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.access-denied-modal.show .access-denied-content {
    transform: scale(1);
}

.access-denied-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.access-denied-content h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 16px;
}

.access-denied-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.access-denied-content p strong {
    color: var(--text-primary);
    font-weight: 600;
}

.access-denied-hint {
    font-size: 13px !important;
    color: var(--text-tertiary) !important;
    background-color: var(--bg-tertiary);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin: 16px 0;
}

.access-denied-actions {
    margin-top: 24px;
}

.access-denied-actions .btn {
    padding: 12px 32px;
    font-size: 15px;
    font-weight: 500;
}

/* ========================================
   教师喊话系统样式
   ======================================== */
.hanhua-section {
    margin-bottom: 24px;
}

.hanhua-form-card,
.hanhua-history-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.hanhua-form-card h3,
.hanhua-history-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-bg);
}

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

.hanhua-form-card .form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.hanhua-form-card .form-control {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.hanhua-form-card .form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-bg);
}

.hanhua-form-card textarea.form-control {
    resize: vertical;
    min-height: 100px;
    line-height: 1.6;
}

.hanhua-form-card .form-hint {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.hanhua-form-card .char-count {
    text-align: right;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.hanhua-form-card .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.hanhua-form-card .checkbox-group {
    display: flex;
    align-items: center;
}

.hanhua-form-card .checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
}

.hanhua-form-card .checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.hanhua-quick-phrases {
    margin-bottom: 16px;
}

.hanhua-quick-phrases label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: block;
}

.quick-phrase-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.phrase-tag {
    display: inline-block;
    padding: 6px 14px;
    background-color: var(--primary-bg);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.phrase-tag:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.hanhua-send-btn {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    margin-top: 8px;
}

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

/* 历史记录列表 */
.hanhua-history-list {
    max-height: 500px;
    overflow-y: auto;
}

.hanhua-history-item {
    padding: 16px;
    border-bottom: 1px solid var(--border-light);
    transition: background-color var(--transition-fast);
}

.hanhua-history-item:hover {
    background-color: var(--bg-tertiary);
}

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

.hanhua-history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.hanhua-history-class {
    font-weight: 600;
    font-size: 14px;
    color: var(--primary-color);
}

.hanhua-history-time {
    font-size: 12px;
    color: var(--text-tertiary);
}

.hanhua-history-content {
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 8px;
    word-break: break-word;
}

.hanhua-history-meta {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.hanhua-history-status {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.hanhua-history-status.pending {
    background-color: #FFF3E0;
    color: #E65100;
}

.hanhua-history-status.displayed {
    background-color: #E3F2FD;
    color: #1565C0;
}

.hanhua-history-status.acknowledged {
    background-color: #E8F5E9;
    color: #2E7D32;
}

.hanhua-history-status.expired {
    background-color: #F5F5F5;
    color: #757575;
}

.hanhua-history-priority {
    font-size: 12px;
    font-weight: 500;
}

.hanhua-history-priority.priority-0 {
    color: #757575;
}

.hanhua-history-priority.priority-1 {
    color: #FF9800;
}

.hanhua-history-priority.priority-2 {
    color: #F44336;
}

/* 喊话页面响应式 */
@media (max-width: 768px) {
    .hanhua-form-card .form-row {
        grid-template-columns: 1fr;
    }

    .quick-phrase-tags {
        gap: 6px;
    }

    .phrase-tag {
        padding: 5px 10px;
        font-size: 12px;
    }
}

/* ========================================
   权限管理页面样式
   ======================================== */

.permission-management {
    padding: 20px 0;
}

/* 等级选择器区域 */
.level-selector-section {
    margin-bottom: 30px;
}

.level-selector-section h3 {
    font-size: 18px;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.level-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.level-card {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.level-card:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.level-card.active {
    border-color: var(--primary-color);
    background: var(--primary-bg);
}

.level-card .level-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

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

.level-card .level-code {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 8px;
}

.level-card .level-perm-count {
    font-size: 13px;
    color: var(--text-secondary);
}

.level-card .level-perm-count strong {
    color: var(--primary-color);
}

/* 权限配置区域 */
.permission-config-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 24px;
}

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

.config-header h3 {
    font-size: 18px;
    color: var(--text-primary);
}

.config-actions {
    display: flex;
    gap: 12px;
}

.config-actions .btn {
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.config-actions .btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
}

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

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

.config-actions .btn-secondary:hover {
    background: var(--border-light);
}

/* 权限列表 */
.permission-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}

.permission-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.permission-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.permission-item .permission-icon {
    font-size: 24px;
    width: 32px;
    text-align: center;
}

.permission-item .permission-info {
    flex: 1;
}

.permission-item .permission-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.permission-item .permission-desc {
    font-size: 12px;
    color: var(--text-tertiary);
}

.permission-item .permission-module {
    font-size: 11px;
    padding: 2px 8px;
    background: var(--primary-bg);
    color: var(--primary-color);
    border-radius: 10px;
}

.permission-item.inherited {
    opacity: 0.6;
}

.permission-item.inherited .permission-module {
    background: #e8e8e8;
    color: #999;
}

/* 提示信息框 */
.permission-info-box {
    display: flex;
    gap: 16px;
    background: #f0f9ff;
    border: 1px solid #bae6fd;
    border-radius: var(--radius-md);
    padding: 20px;
}

.permission-info-box .info-icon {
    font-size: 24px;
}

.permission-info-box .info-content h4 {
    font-size: 15px;
    color: #0369a1;
    margin-bottom: 8px;
}

.permission-info-box .info-content ul {
    margin: 0;
    padding-left: 18px;
    color: #0c4a6e;
    font-size: 13px;
    line-height: 1.8;
}

.permission-info-box .info-content li {
    margin-bottom: 4px;
}

/* 权限页面响应式 */
@media (max-width: 768px) {
    .level-cards {
        grid-template-columns: 1fr;
    }

    .config-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }

    .permission-list {
        grid-template-columns: 1fr;
    }
}