/* 移动端适配样式 */
@media (max-width: 768px) {
    /* 基础适配 */
    html {
        font-size: 16px;
    }
    
    body {
        font-size: 14px;
        line-height: 1.5;
    }

    /* 头部导航适配 */
    .header-content {
        padding: 0 12px;
        height: 56px;
    }
    
    .logo {
        font-size: 18px;
    }
    
    .nav-tab {
        padding: 6px 12px;
        font-size: 13px;
    }

    /* 主内容适配 */
    .main-content {
        padding: 72px 12px 20px;
    }

    /* 页面标题适配 */
    .page-title {
        font-size: 22px;
    }
    
    .stats-bar {
        gap: 24px;
        padding: 12px;
    }
    
    .stat-number {
        font-size: 20px;
    }

    /* 校区选择器适配 */
    .campus-selector {
        gap: 6px;
        margin-bottom: 20px;
    }
    
    .campus-btn {
        padding: 10px 6px;
        font-size: 13px;
    }

    /* 课程卡片适配 */
    .course-card {
        padding: 16px;
        border-radius: 12px;
    }
    
    .course-content {
        gap: 12px;
    }
    
    .course-icon {
        width: 50px;
        height: 50px;
        font-size: 28px;
    }
    
    .course-name {
        font-size: 16px;
    }
    
    .course-actions {
        gap: 8px;
    }
    
    .count-badge {
        padding: 6px 10px;
        font-size: 13px;
        min-width: 50px;
    }
    
    .join-btn {
        padding: 8px 12px;
        font-size: 13px;
    }

    /* 浮动按钮适配 */
    .floating-action {
        bottom: 20px;
        right: 20px;
    }
    
    .fab {
        width: 56px;
        height: 56px;
        font-size: 12px;
    }
    
    .fab i {
        font-size: 16px;
    }

    /* 表单适配 */
    .form-container {
        padding: 20px;
        border-radius: 12px;
    }
    
    .form-title {
        font-size: 20px;
        margin-bottom: 20px;
    }
    
    .form-group {
        margin-bottom: 16px;
    }
    
    .form-label {
        font-size: 13px;
        margin-bottom: 6px;
    }
    
    .form-input, .form-select, .form-textarea {
        padding: 10px 14px;
        font-size: 15px;
        border-radius: 10px;
    }
    
    .form-textarea {
        min-height: 70px;
    }

    /* 图标选择器适配 */
    .selected-icon {
        width: 42px;
        height: 42px;
        font-size: 22px;
    }
    
    .icon-picker-btn {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .icon-picker {
        padding: 12px;
        grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
        gap: 6px;
        max-height: 180px;
    }
    
    .icon-option {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }

    /* 单选和复选框适配 */
    .radio-group, .checkbox-group {
        gap: 8px;
    }
    
    .radio-item, .checkbox-item {
        padding: 6px 10px;
        font-size: 13px;
    }
    
    .radio-text, .checkbox-text {
        font-size: 13px;
    }

    /* 数字输入适配 */
    .number-input {
        gap: 12px;
        padding: 10px;
    }
    
    .number-btn {
        width: 32px;
        height: 32px;
        font-size: 16px;
    }
    
    .number-display {
        font-size: 16px;
        min-width: 28px;
    }

    /* 提交按钮适配 */
    .submit-btn {
        padding: 14px;
        font-size: 15px;
    }

    /* 个人资料适配 */
    .profile-header {
        padding: 20px;
    }
    
    .avatar {
        width: 70px;
        height: 70px;
        font-size: 28px;
        margin-bottom: 14px;
    }
    
    .profile-info h3 {
        font-size: 18px;
        margin-bottom: 6px;
    }
    
    .profile-info p {
        font-size: 13px;
    }
    
    .menu-item {
        padding: 14px 16px;
    }
    
    .menu-item span {
        font-size: 15px;
    }

    /* 弹窗适配 */
    .modal-content {
        margin: 16px;
        padding: 20px;
        border-radius: 12px;
    }
    
    .modal-content h3 {
        font-size: 16px;
        margin-bottom: 16px;
    }
    
    .modal-actions {
        gap: 10px;
        margin-top: 16px;
    }
    
    .cancel-btn, .confirm-btn {
        padding: 10px;
        font-size: 13px;
    }

    /* 管理员面板适配 */
    .admin-modal {
        max-height: 75vh;
    }
    
    .admin-stats {
        gap: 12px;
        margin-bottom: 16px;
    }
    
    .admin-stat {
        padding: 12px;
    }
    
    .admin-actions {
        gap: 10px;
        margin-bottom: 16px;
    }
    
    .admin-btn {
        padding: 10px;
        font-size: 13px;
    }
    
    .admin-course-list {
        max-height: 250px;
    }

    /* Toast适配 */
    .toast {
        padding: 10px 20px;
        font-size: 13px;
        border-radius: 6px;
    }

    /* 空状态适配 */
    .empty-state {
        padding: 40px 16px;
    }
    
    .empty-state i {
        font-size: 40px;
        margin-bottom: 12px;
    }
    
    .empty-state p {
        font-size: 14px;
    }
}

/* 超小屏幕适配 */
@media (max-width: 375px) {
    .header-content {
        padding: 0 8px;
    }
    
    .main-content {
        padding: 72px 8px 20px;
    }
    
    .stats-bar {
        gap: 16px;
        padding: 10px;
    }
    
    .campus-selector {
        gap: 4px;
    }
    
    .campus-btn {
        padding: 8px 4px;
        font-size: 12px;
    }
    
    .course-card {
        padding: 12px;
    }
    
    .course-icon {
        width: 45px;
        height: 45px;
        font-size: 24px;
    }
    
    .course-name {
        font-size: 15px;
    }
    
    .form-container {
        padding: 16px;
    }
    
    .modal-content {
        margin: 12px;
        padding: 16px;
    }
}

/* 横屏适配 */
@media (orientation: landscape) and (max-height: 600px) {
    .header-content {
        height: 48px;
    }
    
    .main-content {
        padding-top: 64px;
    }
    
    .fab {
        width: 48px;
        height: 48px;
        font-size: 11px;
    }
    
    .fab i {
        font-size: 14px;
    }
    
    .floating-action {
        bottom: 16px;
        right: 16px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增大点击区域 */
    .nav-tab {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .campus-btn {
        min-height: 44px;
    }
    
    .join-btn {
        min-height: 44px;
        min-width: 80px;
    }
    
    .form-input, .form-select, .form-textarea {
        min-height: 44px;
    }
    
    .number-btn {
        min-width: 44px;
        min-height: 44px;
    }
    
    .icon-option {
        min-width: 44px;
        min-height: 44px;
    }
    
    .menu-item {
        min-height: 52px;
    }
    
    /* 移除hover效果 */
    .course-card:hover {
        transform: none;
    }
    
    .join-btn:hover {
        transform: none;
    }
    
    .fab:hover {
        transform: none;
    }
}