:root {
    --bg-color: #f5f7fa;
    --text-color: #333;
    --panel-bg: white;
    --border-color: #e1e5eb;
    --primary-color: #4a6ee0;
    --hover-color: #3a5bc7;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    --toolbar-bg: white;
    --toolbar-text: #333;
    --search-highlight: rgba(255, 0, 0, 0.8);
    --active-highlight: rgba(0, 255, 0, 0.8);
}

.wyb-pdf-container .dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --panel-bg: #2d2d2d;
    --border-color: #444;
    --primary-color: #5d7ce0;
    --hover-color: #4a6ee0;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    --toolbar-bg: #2d2d2d;
    --toolbar-text: #e0e0e0;
    --search-highlight: rgba(255, 100, 100, 0.8);
    --active-highlight: rgba(100, 255, 100, 0.8);
}

/* mode-container 基础样式 */
.wyb-pdf-container #mode-container {
    overflow: auto;
    scrollbar-width: thin;
    scrollbar-color: #c1c1c1 #f1f1f1;
    margin: 0 auto;
    /* padding: 20px; */
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Webkit 浏览器滚动条样式 */
.wyb-pdf-container #mode-container::-webkit-scrollbar {
    width: 8px;
}

.wyb-pdf-container #mode-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 6px;
}

.wyb-pdf-container #mode-container::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 6px;
    border: 2px solid #f1f1f1;
}

.wyb-pdf-container #mode-container::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 深色模式下的滚动条样式 */
.wyb-pdf-container #mode-container.dark-mode {
    scrollbar-color: #555 #2d2d2d;
}

.wyb-pdf-container #mode-container.dark-mode::-webkit-scrollbar-track {
    background: #2d2d2d;
}

.wyb-pdf-container #mode-container.dark-mode::-webkit-scrollbar-thumb {
    background: #555;
    border: 2px solid #2d2d2d;
}

.wyb-pdf-container #mode-container.dark-mode::-webkit-scrollbar-thumb:hover {
    background: #666;
}

.wyb-pdf-container .container {
    /*max-width: 1400px;*/
    margin: 0 auto;
    /*padding: 20px;*/
    height: 100%;
    display: flex;
    flex-direction: column;
}

.wyb-pdf-container .main-content {
    display: flex;
    gap: 20px;
    flex: 1;
    overflow: hidden;
    position: relative;
}

.wyb-pdf-container .sidebar {
    position: absolute;
    left: -250px;
    top: 56px;
    bottom: 0;
    width: 200px;
    background: var(--panel-bg);
    border-radius: 0 10px 10px 0;
    box-shadow: var(--shadow);
    padding: 15px;
    transition: left 0.3s ease;
    z-index: 100;
}

.wyb-pdf-container .sidebar.visible {
    left: 0;
}

.wyb-pdf-container .sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
}

.wyb-pdf-container .sidebar-header h3 {
    color: var(--primary-color);
}

.wyb-pdf-container .toggle-sidebar {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-color);
}

.wyb-pdf-container .thumbnail-container {
    height: calc(100% - 50px);
    overflow-y: auto;
    padding-right: 5px;
}

.wyb-pdf-container .thumbnail {
    margin-bottom: 10px;
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: 5px;
    overflow: hidden;
    transition: all 0.2s;
    background: white;
    position: relative;
}

.wyb-pdf-container .thumbnail:hover {
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

.wyb-pdf-container .thumbnail.active {
    border-color: var(--primary-color);
}

.wyb-pdf-container .thumbnail canvas {
    width: 100%;
    height: auto;
    display: block;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.wyb-pdf-container .thumbnail-page-num {
    text-align: center;
    font-size: 12px;
    background: rgba(0, 0, 0, 0.4);
    color: white;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.wyb-pdf-container .pdf-container {
    flex: 1;
    background: var(--panel-bg);
    /*border-radius: 10px;*/
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.wyb-pdf-container .pdf-controls {
    padding: 9px;
    background: var(--toolbar-bg);
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    overflow-x: auto;
    white-space: nowrap;
    gap: 5px;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 10;
    position: relative;
    color: var(--toolbar-text);
}

.wyb-pdf-container .control-group {
    display: flex;
    gap: 3px;
    align-items: center;
    flex-shrink: 0;
    background: rgba(0, 0, 0, 0.05);
    padding: 3px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.wyb-pdf-container .dark-mode .control-group {
    background: rgba(255, 255, 255, 0.1);
}

.wyb-pdf-container .pdf-controls button {
    padding: 7px 7px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    font-size: 14px;
}

.wyb-pdf-container .pdf-controls button:hover {
    background: var(--hover-color);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.wyb-pdf-container .pdf-controls button i {
    font-size: 14px;
    width: 16px;
    text-align: center;
}

.wyb-pdf-container .pdf-controls input {
    padding: 3px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--panel-bg);
    color: var(--text-color);
    font-weight: 500;
    font-size: 14px;
    width: 130px;
}

.wyb-pdf-container .pdf-controls select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--panel-bg);
    color: var(--text-color);
    font-weight: 500;
    font-size: 14px;
}

.wyb-pdf-container .pdf-controls span {
    font-weight: 600;
    font-size: 14px;
}

.wyb-pdf-container .file-upload-wrapper {
    display: flex;
    align-items: center;
    margin-left: auto;
}

.wyb-pdf-container .file-upload {
    display: flex;
    align-items: center;
}

.wyb-pdf-container .file-upload input {
    display: none;
}

.wyb-pdf-container .file-upload label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.wyb-pdf-container .file-upload label:hover {
    background: var(--hover-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.wyb-pdf-container .file-upload label i {
    font-size: 14px;
}

.wyb-pdf-container .pdf-viewer {
    flex: 1;
    overflow: auto;
    position: relative;
    /*max-height: calc(100vh - 0px);*/
}

.wyb-pdf-container .pdf-pages-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.wyb-pdf-container .pdf-page {
    position: relative;
    margin: 0 auto;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-color);
}

.wyb-pdf-container .pdf-page canvas {
    position: absolute;
    top: 0;
    left: 0;
}

.wyb-pdf-container .text-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    opacity: 0.5;
    line-height: 1.0;
}

.wyb-pdf-container .text-layer span {
    color: transparent;
    position: absolute;
    white-space: pre;
    cursor: text;
    transform-origin: 0% 0%;
}

.wyb-pdf-container .text-layer span::selection {
    background: rgba(0, 0, 255, 0.3);
}

.wyb-pdf-container .search-highlight {
    background-color: var(--search-highlight);
    border-radius: 2px;
}

.wyb-pdf-container .active-highlight {
    background-color: var(--active-highlight) !important;
    border: 2px solid var(--primary-color);
    border-radius: 3px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
}

.wyb-pdf-container .loading {
    display: none;
    text-align: center;
    padding: 10px;
    color: var(--primary-color);
}

.wyb-pdf-container .loading:after {
    content: '...';
    animation: dots 1.5s steps(5, end) infinite;
}

@keyframes dots {
    0%, 20% {
        color: rgba(0, 0, 0, 0);
        text-shadow: .25em 0 0 rgba(0, 0, 0, 0), .5em 0 0 rgba(0, 0, 0, 0);
    }
    40% {
        color: var(--primary-color);
        text-shadow: .25em 0 0 rgba(0, 0, 0, 0), .5em 0 0 rgba(0, 0, 0, 0);
    }
    60% {
        text-shadow: .25em 0 0 var(--primary-color), .5em 0 0 rgba(0, 0, 0, 0);
    }
    80%, 100% {
        text-shadow: .25em 0 0 var(--primary-color), .5em 0 0 var(--primary-color);
    }
}

@media (max-width: 768px) {
    .wyb-pdf-container .pdf-controls {
        padding: 8px 10px;
        gap: 10px;
    }

    .wyb-pdf-container .pdf-controls button {
        padding: 6px 10px;
        font-size: 12px;
    }

    .wyb-pdf-container .control-group {
        padding: 6px 8px;
    }

    .wyb-pdf-container .pdf-controls input {
        min-width: 120px;
        padding: 6px 10px;
    }
}

.wyb-pdf-container .selection-toolbar {
    position: absolute;
    display: none;
    background: white;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    padding: 5px;
    z-index: 100;
}

.wyb-pdf-container .selection-toolbar button {
    background: #f0f0f0;
    border: none;
    border-radius: 3px;
    padding: 5px 10px;
    margin: 0 2px;
    cursor: pointer;
    color: #5b5959;
}

.wyb-pdf-container .selection-toolbar button:hover {
    background: #e0e0e0;
}

.wyb-pdf-container .search-status {
    color: var(--toolbar-text);
    font-weight: 500;
    padding: 0 10px;
}

.wyb-pdf-container .performance-optimized {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000;
}

.wyb-pdf-container .pdf-page.rendering {
    opacity: 0.7;
    transition: opacity 0.3s;
}

.wyb-pdf-container .pdf-page.rendered {
    opacity: 1;
}

/* 新增样式：页面占位符 */
.wyb-pdf-container .page-placeholder {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: #f9f9f9;
    border-radius: 5px;
    color: #666;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.wyb-pdf-container .dark-mode .page-placeholder {
    background: #3a3a3a;
    color: #ccc;
}

.wyb-pdf-container .page-number {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.wyb-pdf-container .loading-animation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.wyb-pdf-container .loading-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary-color);
    animation: loading-bounce 1.4s ease-in-out infinite both;
}

.wyb-pdf-container .loading-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.wyb-pdf-container .loading-dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes loading-bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

/* 搜索加载状态 */
.wyb-pdf-container .search-loading {
    display: none;
    color: var(--primary-color);
    font-size: 12px;
    margin-left: 10px;
}