.pr-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.pr-sidebar {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.pr-section {
    background: #fff;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.pr-section h3 {
    font-size: 0.95em;
    color: #2c3e50;
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 1px solid #ecf0f1;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pr-section h3 i {
    color: #3498db;
}

/* 上传区 */
.pr-upload {
    border: 2px dashed #ddd;
    border-radius: 10px;
    padding: 24px 16px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    background: #fafafa;
}

.pr-upload:hover,
.pr-upload.dragover {
    border-color: #3498db;
    background: #f0f7ff;
}

.pr-upload i {
    font-size: 1.8em;
    color: #3498db;
    margin-bottom: 8px;
}

.pr-upload p {
    color: #666;
    font-size: 0.85em;
    margin: 0 0 4px;
}

.pr-hint {
    color: #999;
    font-size: 0.75em;
}

/* 文件信息 */
.pr-file-info {
    text-align: center;
}

.pr-file-name {
    font-weight: 600;
    color: #2c3e50;
    word-break: break-all;
    margin-bottom: 4px;
}

.pr-file-meta {
    font-size: 0.8em;
    color: #718096;
}

/* 按钮 */
.pr-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pr-btn {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 8px;
    font-size: 0.85em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.pr-btn-primary {
    background: #3498db;
    color: #fff;
}

.pr-btn-primary:hover:not(:disabled) {
    background: #2980b9;
}

.pr-btn-outline {
    background: #fff;
    color: #555;
    border: 1px solid #ddd;
}

.pr-btn-outline:hover:not(:disabled) {
    background: #f8f9fa;
    border-color: #3498db;
    color: #3498db;
}

.pr-btn-danger {
    background: #fff;
    color: #e74c3c;
    border: 1px solid #e74c3c;
}

.pr-btn-danger:hover:not(:disabled) {
    background: #fef2f2;
}

.pr-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 使用次数信息 */
.pr-usage-info {
    background: #e8f4fd;
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 0.85em;
    color: #2c3e50;
    text-align: center;
}

.pr-usage-info i {
    color: #3498db;
    margin-right: 4px;
}

/* VIP遮罩 */
.pr-vip-mask {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10;
    background: rgba(0,0,0,0.75);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    backdrop-filter: blur(2px);
}

.pr-vip-mask-inner {
    text-align: center;
    color: #fff;
    padding: 30px;
}

.pr-vip-mask-icon {
    font-size: 3em;
    margin-bottom: 12px;
}

.pr-vip-mask-title {
    font-size: 1.3em;
    font-weight: 600;
    margin-bottom: 8px;
}

.pr-vip-mask-desc {
    font-size: 0.9em;
    opacity: 0.9;
    margin-bottom: 20px;
}

.pr-vip-mask-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.pr-vip-btn {
    background: #3498db;
    color: #fff;
    text-decoration: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
}

.pr-vip-btn:hover {
    background: #2980b9;
}

.pr-vip-btn-single {
    background: #e74c3c;
    color: #fff;
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: background 0.2s;
}

.pr-vip-btn-single:hover {
    background: #c0392b;
}

/* 主区域 */
.pr-main {
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
    min-width: 0;
}

.pr-main.has-vip-mask {
    min-height: 500px;
}

/* 页面网格 */
.pr-page-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 16px;
    min-height: 300px;
}

.pr-placeholder {
    grid-column: 1 / -1;
    background: #f8f9fa;
    border: 2px dashed #dee2e6;
    border-radius: 12px;
    padding: 60px 20px;
    text-align: center;
    color: #999;
}

.pr-placeholder i {
    font-size: 3em;
    margin-bottom: 12px;
    color: #bdc3c7;
}

.pr-placeholder p {
    margin: 0;
}

/* 页面卡片 */
.pr-page-card {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    overflow: hidden;
    transition: all 0.2s;
    position: relative;
    border: 2px solid transparent;
    cursor: pointer;
}

.pr-page-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    transform: translateY(-2px);
}

.pr-page-card.selected {
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
}

.pr-page-card.deleted {
    opacity: 0.4;
    pointer-events: none;
    filter: grayscale(100%);
}

.pr-page-thumb-wrap {
    position: relative;
    width: 100%;
    padding-top: 141.4%; /* A4比例 */
    background: #f8f9fa;
    overflow: hidden;
}

.pr-page-thumb-wrap canvas,
.pr-page-thumb-wrap .pr-blank-page {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.pr-page-thumb-wrap canvas {
    display: block;
}

.pr-blank-page {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border-bottom: 1px solid #eee;
}

.pr-blank-page i {
    font-size: 2em;
    color: #ddd;
}

/* 删除按钮 */
.pr-page-delete {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(231, 76, 60, 0.9);
    color: #fff;
    border: none;
    font-size: 0.75em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 2;
}

.pr-page-card:hover .pr-page-delete {
    opacity: 1;
}

.pr-page-delete:hover {
    background: #c0392b;
}

/* 旋转控制 */
.pr-page-rotate {
    display: flex;
    gap: 4px;
    padding: 8px;
    justify-content: center;
    background: #fff;
    border-top: 1px solid #f1f5f9;
}

.pr-rotate-btn {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
    background: #fff;
    color: #64748b;
    font-size: 0.75em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.pr-rotate-btn:hover {
    border-color: #3498db;
    color: #3498db;
    background: #f0f7ff;
}

/* 页码 */
.pr-page-number {
    text-align: center;
    padding: 6px 8px;
    font-size: 0.8em;
    color: #64748b;
    font-weight: 500;
    background: #fff;
}

.pr-page-number .pr-rotate-badge {
    display: inline-block;
    margin-left: 4px;
    font-size: 0.7em;
    color: #3498db;
    background: #e8f4fd;
    padding: 1px 5px;
    border-radius: 4px;
}

/* 批量操作栏 */
.pr-bulk-bar {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    margin-bottom: 8px;
}

.pr-bulk-bar span {
    font-size: 0.85em;
    color: #555;
    flex: 1;
}

.pr-bulk-bar .pr-btn {
    width: auto;
    padding: 6px 12px;
    font-size: 0.8em;
}

/* 使用提示 */
.pr-tips {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.pr-tips h4 {
    font-size: 1em;
    color: #2c3e50;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pr-tips h4 i {
    color: #f39c12;
}

.pr-tip-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.pr-tip-item {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 12px;
    border-left: 3px solid #3498db;
}

.pr-tip-item strong {
    display: block;
    font-size: 0.9em;
    color: #2c3e50;
    margin-bottom: 4px;
}

.pr-tip-item p {
    font-size: 0.8em;
    color: #666;
    margin: 0;
    line-height: 1.5;
}

/* 加载状态 */
.pr-loading {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(2px);
}

.pr-loading-inner {
    text-align: center;
    color: #3498db;
}

.pr-loading-inner i {
    font-size: 2.5em;
    margin-bottom: 12px;
}

.pr-loading-inner p {
    font-size: 1em;
    color: #555;
    margin: 0;
}

/* 撤销提示 */
.pr-undo-toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: #2c3e50;
    color: #fff;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 0.85em;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 9999;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    animation: prToastIn 0.3s ease;
}

@keyframes prToastIn {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.pr-undo-btn {
    background: #3498db;
    color: #fff;
    border: none;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.85em;
    cursor: pointer;
    font-weight: 600;
}

.pr-undo-btn:hover {
    background: #2980b9;
}

.pr-toast{position:fixed;top:20px;left:50%;transform:translateX(-50%) translateY(-20px);background:#333;color:#fff;padding:10px 20px;border-radius:8px;font-size:0.9em;z-index:9999;opacity:0;transition:all 0.3s ease;pointer-events:none;}.pr-toast.show{opacity:1;transform:translateX(-50%) translateY(0);}.pr-toast.success{background:#27ae60;}.pr-toast.error{background:#e74c3c;}.pr-toast.info{background:#3498db;}

/* 响应式 */
@media (max-width: 768px) {
    .pr-container {
        grid-template-columns: 1fr;
    }
    .pr-page-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 12px;
    }
    .pr-tip-grid {
        grid-template-columns: 1fr;
    }
    .pr-bulk-bar {
        flex-wrap: wrap;
    }
    .pr-page-delete {
        opacity: 1;
    }
}