:root {
    /* 工具栏文字颜色 */
    --color-white: #000;
    /* 工具栏目背景颜色 */
    --color-primary-toolbar-bg: #fff;
    --color-light-gray: #fff;
    --color-bg: #fff;
    --color-disable: #ccc;
    --color-shadow-light: rgba(0,0,0,0.1);
    --color-shadow-blue: rgba(102, 126, 234, 0.3);
    --color-transparent: #fff;
    --color-border-gray: #ccc;
    --color-text-gray: #666;
}

/* PDF查看器主样式文件 */

/* 基础容器样式 */
.pdf-tag-container {
    font-family: Arial, sans-serif;
    background: var(--color-bg);
    box-shadow: 0 2px 8px var(--color-shadow-light);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.pdf-container {
    background: var(--color-light-gray);
    border-radius: 0 0 12px 12px;
    overflow: auto;
}

.pdf-container.single-page {
    height: 100%;
}

.pdf-container.no-context-menu {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

/* 控制栏样式 */
.controls {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    gap: 12px;
    padding: 16px 20px;
    /* background: linear-gradient(135deg, #405bd4 0%, #0835c9 100%); */
    background: var(--color-primary-toolbar-bg);
    border-radius: 12px 12px 0 0;
    box-shadow: 0 4px 15px var(--color-shadow-blue);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-transparent);
    border-bottom: none;
    flex-wrap: wrap;
}

/* 按钮样式 */
.pdf-btn {
    padding: 8px 14px;
    background: var(--color-transparent);
    color: var(--color-white);
    border: 1px solid var(--color-transparent);
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    min-width: 70px;
    text-align: center;
}

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

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

.pdf-btn:hover {
    background: var(--color-transparent);
    border-color: var(--color-transparent);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--color-shadow-light);
}

.pdf-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px var(--color-shadow-light);
}

.pdf-btn:disabled {
    background: var(--color-transparent);
    color: var(--color-disable);
    border-color: var(--color-transparent);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.pdf-btn:disabled:hover {
    transform: none;
    box-shadow: none;
}

.pdf-btn:disabled::before {
    display: none;
}

/* 页面信息样式 */
.page-info, .zoom-info {
    font-size: 12px;
    color: var(--color-white);
    font-weight: 500;
    background: var(--color-transparent);
    padding: 6px 10px;
    border-radius: 4px;
    border: 1px solid var(--color-transparent);
    backdrop-filter: blur(10px);
    white-space: nowrap;
}

.page-info span, .zoom-info span {
    font-weight: 600;
    color: var(--color-white);
}

/* 文件来源样式 */
.pdf-source {
    margin-left: auto;
    font-size: 14px;
    color: var(--color-white);
    background: var(--color-transparent);
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid var(--color-transparent);
}

/* 全部页面容器 */
#all-pages-container {
    text-align: center;
    padding: 10px;
}

/* 单页画布样式 */
.page-canvas {
    display: block;
    margin: 20px auto;
    border: 1px solid var(--color-border-gray);
    box-shadow: 0 2px 8px var(--color-shadow-light);
}

/* 页码样式 */
.page-number {
    text-align: center;
    margin: 10px 0;
    color: var(--color-text-gray);
    font-size: 14px;
}

/* 移动端适配 */
@media screen and (max-width: 768px) {
    .controls {
        flex-wrap: wrap;
        gap: 8px;
        padding: 12px 16px;
    }
    
    .pdf-btn {
        padding: 8px 12px;
        font-size: 12px;
        min-width: 70px;
        flex: 1;
        max-width: calc(50% - 4px);
    }
    .page-canvas{
         width: 100%;
    }
    .page-info, .zoom-info {
        margin: 4px 2px;
        font-size: 12px;
        padding: 6px 8px;
        flex: 1;
        text-align: center;
        min-width: 80px;
    }
}