/**
 * 背景壁纸功能样式
 */

/* 背景模态框 */
.background-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.background-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}

.background-modal-content {
    position: relative;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 900px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    transition: all 0.3s ease;
}

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

/* 模态框头部 */
.background-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-light);
}

.background-modal-header h2 {
    margin: 0;
    font-size: 20px;
    color: var(--text-color);
}

.background-modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-muted);
    padding: 5px;
    border-radius: 4px;
    transition: var(--transition);
}

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

/* 标签页 */
.background-modal-tabs {
    display: flex;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
}

.background-tab {
    flex: 1;
    padding: 15px 20px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-muted);
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}

.background-tab:hover {
    color: var(--text-color);
    background: rgba(94, 114, 228, 0.1);
}

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

/* 模态框主体 */
.background-modal-body {
    padding: 0;
    max-height: 60vh;
    overflow-y: auto;
}

.background-tab-content {
    display: none;
    padding: 20px;
}

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

/* 分类列表 */
.background-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.background-category {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 15px;
    background: var(--bg-light);
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    font-size: 13px;
}

.background-category:hover {
    background: rgba(94, 114, 228, 0.1);
    color: var(--primary-color);
}

.background-category.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

.category-name {
    font-weight: 500;
}

/* 壁纸网格 */
.background-wallpapers {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
}

.background-wallpaper {
    position: relative;
    aspect-ratio: 16/9;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    border: 3px solid transparent;
}

.background-wallpaper:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.background-wallpaper.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(94, 114, 228, 0.2);
}

.background-wallpaper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.wallpaper-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.background-wallpaper:hover .wallpaper-overlay {
    opacity: 1;
}

.wallpaper-name {
    color: white;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 8px;
    text-align: center;
    padding: 0 8px;
}

.wallpaper-preview {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    transition: var(--transition);
}

.wallpaper-preview:hover {
    background: #4c63d2;
}

/* 上传区域 */
.upload-area {
    text-align: center;
    padding: 40px 20px;
}

.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px 20px;
    margin-bottom: 20px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.upload-zone:hover {
    border-color: var(--primary-color);
    background: rgba(94, 114, 228, 0.05);
}

.upload-zone input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 15px;
    color: var(--text-muted);
}

.upload-zone p {
    margin: 0;
    color: var(--text-color);
    font-size: 16px;
    font-weight: 500;
}

.upload-tips {
    color: var(--text-muted);
    font-size: 13px;
}

.upload-tips p {
    margin: 5px 0;
}

/* 定时设置 */
.timer-settings {
    padding: 20px 0;
}

.timer-option {
    margin-bottom: 20px;
}

.timer-option label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    cursor: pointer;
}

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

.timer-options {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.timer-options label {
    font-weight: 500;
    min-width: 80px;
}

.timer-options select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background: var(--white);
    color: var(--text-color);
    font-size: 14px;
    transition: var(--transition);
}

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

/* 模态框底部 */
.background-modal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-light);
}

.background-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.background-btn-secondary {
    background: var(--bg-light);
    color: var(--text-color);
    border: 2px solid var(--border-color);
}

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

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

.background-btn-primary:hover {
    background: #4c63d2;
    transform: translateY(-1px);
}

/* 预览模态框 */
.wallpaper-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.preview-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.preview-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    max-height: 80vh;
}

.preview-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.preview-close:hover {
    background: rgba(0, 0, 0, 0.9);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .background-modal-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .background-categories {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 6px;
        margin-bottom: 15px;
        padding-bottom: 12px;
    }
    
    .background-category {
        justify-content: center;
        padding: 8px 6px;
        font-size: 12px;
        border-radius: 8px;
    }
    
    .background-category-icon {
        font-size: 18px;
        margin-bottom: 2px;
    }
    
    .background-category-name {
        font-size: 11px;
        line-height: 1.2;
    }
    
    .background-wallpapers {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 10px;
    }
    
    .background-modal-header,
    .background-modal-footer {
        padding: 15px 20px;
    }
    
    .background-tab {
        padding: 12px 15px;
        font-size: 13px;
    }
    
    .timer-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .timer-options label {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .background-wallpapers {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .upload-zone {
        padding: 30px 15px;
    }
    
    .upload-icon {
        font-size: 36px;
    }
    
    .background-modal-footer {
        flex-direction: column;
        gap: 10px;
    }
    
    .background-btn {
        width: 100%;
    }
}

/* 滚动条样式 */
.background-modal-body::-webkit-scrollbar {
    width: 6px;
}

.background-modal-body::-webkit-scrollbar-track {
    background: var(--bg-light);
}

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

.background-modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}