/**
 * 打印预览模块 - CSS样式
 * @description 提供打印预览功能的样式，支持多场景适配和样式隔离
 * @author Template Designer Team
 * @version 1.0.0
 */

/* 
  使用CSS命名空间确保样式隔离，避免与其他组件样式冲突
  所有类名以"pp-"为前缀(Print Preview缩写)
*/

/* TDesign 颜色变量 */
:root {
    --pp-brand-color: #0052d9;
    --pp-brand-color-light: #4a89ff;
    --pp-brand-color-lighter: #a2c5ff;
    --pp-brand-color-lightest: #deedff;
    --pp-success-color: #2ba471;
    --pp-warning-color: #ed7b2f;
    --pp-error-color: #d54941;
    
    --pp-white-color: #fff;
    --pp-black-color: #000;
    --pp-gray-color-1: #f3f3f3;
    --pp-gray-color-2: #e7e7e7;
    --pp-gray-color-3: #dcdcdc;
    --pp-gray-color-4: #c5c5c5;
    --pp-gray-color-5: #a6a6a6;
    --pp-gray-color-6: #8b8b8b;
    --pp-gray-color-7: #777;
    --pp-gray-color-8: #5c5c5c;
    --pp-gray-color-9: #4d4d4d;
    --pp-gray-color-10: #2c2c2c;
    
    --pp-text-color-primary: #000000e0;
    --pp-text-color-secondary: #000000a6;
    --pp-text-color-placeholder: #00000061;
    --pp-text-color-disabled: #00000040;
    
    --pp-border-color: #dcdcdc;
    --pp-border-color-hover: #a6a6a6;
    --pp-border-color-active: #2c2c2c;
    --pp-border-color-disabled: #e5e5e5;
    
    --pp-bg-color-component-disabled: #f5f5f5;
    
    --pp-radius-small: 3px;
    --pp-radius-default: 6px;
    --pp-radius-medium: 6px;
    --pp-radius-large: 9px;
    --pp-radius-extra-large: 12px;
    --pp-radius-round: 999px;
    
    --pp-shadow-1: 0 1px 10px rgba(0, 0, 0, 0.05), 0 2px 4px rgba(0, 0, 0, 0.07);
    --pp-shadow-2: 0 3px 14px 2px rgba(0, 0, 0, 0.05), 0 8px 10px 1px rgba(0, 0, 0, 0.06);
    --pp-shadow-3: 0 6px 30px 5px rgba(0, 0, 0, 0.05), 0 16px 24px 2px rgba(0, 0, 0, 0.04);
    
    --pp-spacer-1: 4px;
    --pp-spacer-2: 8px;
    --pp-spacer-3: 12px;
    --pp-spacer-4: 16px;
    --pp-spacer-5: 20px;
    --pp-spacer-6: 24px;
}

/* 基础重置 */
.pp-container *,
.pp-container *::before,
.pp-container *::after {
    box-sizing: border-box;
}

/* 主容器 */
.pp-container {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--pp-text-color-primary);
    line-height: 1.5;
}

/* 预览模态框 */
.pp-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.38, 0, 0.24, 1);
}

.pp-preview-modal.active {
    opacity: 1;
    visibility: visible;
}

/* 预览头部 */
.pp-preview-header {
    background-color: var(--pp-white-color);
    padding: var(--pp-spacer-4) var(--pp-spacer-5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--pp-border-color);
    flex-shrink: 0;
    height: 64px;
}

.pp-preview-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--pp-text-color-primary);
    display: flex;
    align-items: center;
    gap: var(--pp-spacer-2);
}

.pp-preview-title i {
    color: var(--pp-brand-color);
    font-size: 20px;
}

.pp-preview-actions {
    display: flex;
    gap: var(--pp-spacer-3);
}

.pp-preview-close {
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--pp-gray-color-7);
    border-radius: var(--pp-radius-round);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s cubic-bezier(0.38, 0, 0.24, 1);
    position: relative;
    outline: none;
}

.pp-preview-close:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--pp-gray-color-10);
    transform: scale(1.1);
}

.pp-preview-close:active {
    transform: scale(0.95);
}

.pp-preview-close:focus {
    outline: 2px solid var(--pp-brand-color-lighter);
    outline-offset: 2px;
}

/* 预览内容区 */
.pp-preview-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

.pp-preview-toolbar {
    background-color: var(--pp-white-color);
    padding: var(--pp-spacer-3) var(--pp-spacer-5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--pp-border-color);
    flex-shrink: 0;
    height: 56px;
}

.pp-preview-tools {
    display: flex;
    gap: var(--pp-spacer-2);
}

.pp-preview-zoom-control {
    display: flex;
    align-items: center;
    gap: var(--pp-spacer-2);
    background-color: var(--pp-gray-color-1);
    border-radius: var(--pp-radius-medium);
    padding: var(--pp-spacer-1);
}

.pp-preview-zoom-btn {
    background: transparent;
    border: none;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--pp-radius-default);
    cursor: pointer;
    transition: all 0.2s;
    color: var(--pp-gray-color-8);
}

.pp-preview-zoom-btn:hover {
    background-color: var(--pp-white-color);
    color: var(--pp-text-color-primary);
}

.pp-preview-zoom-value {
    min-width: 50px;
    text-align: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--pp-text-color-secondary);
}

.pp-preview-page-control {
    display: flex;
    align-items: center;
    gap: var(--pp-spacer-2);
}

.pp-preview-page-info {
    font-size: 14px;
    color: var(--pp-text-color-secondary);
    white-space: nowrap;
}

.pp-preview-page-btn {
    background: transparent;
    border: none;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--pp-radius-default);
    cursor: pointer;
    transition: all 0.2s;
    color: var(--pp-gray-color-8);
}

.pp-preview-page-btn:hover:not(:disabled) {
    background-color: var(--pp-gray-color-1);
    color: var(--pp-text-color-primary);
}

.pp-preview-page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 预览画布容器 */
.pp-preview-canvas-container {
    flex: 1;
    padding: var(--pp-spacer-5);
    overflow: auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    background-color: var(--pp-gray-color-1);
    background-image: 
        linear-gradient(45deg, #f0f0f0 25%, transparent 25%),
        linear-gradient(-45deg, #f0f0f0 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #f0f0f0 75%),
        linear-gradient(-45deg, transparent 75%, #f0f0f0 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.pp-preview-pages-wrapper {
    position: relative;
    transition: transform 0.3s cubic-bezier(0.38, 0, 0.24, 1);
}

.pp-preview-page {
    background-color: var(--pp-white-color);
    box-shadow: var(--pp-shadow-2);
    margin: 0 auto var(--pp-spacer-5);
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.38, 0, 0.24, 1);
}

.pp-preview-page:last-child {
    margin-bottom: 0;
}

.pp-preview-page.active {
    box-shadow: var(--pp-shadow-3);
}

.pp-preview-canvas {
    width: 100%;
    height: 100%;
    position: relative;
    transform-origin: center center;
    transition: transform 0.3s cubic-bezier(0.38, 0, 0.24, 1);
}

/* 元素样式调整（用于打印预览） */
.pp-preview-canvas .mtd-designer-resize-handle,
.pp-preview-canvas .mtd-designer-rotate-handle,
.pp-preview-canvas .mtd-designer-selected,
.pp-preview-canvas .selected {
    display: none !important;
}

.pp-preview-canvas .mtd-designer-canvas-element {
    border: none !important;
    cursor: default !important;
    user-select: text;
}

/* 底部控制区 */
.pp-preview-footer {
    background-color: var(--pp-white-color);
    padding: var(--pp-spacer-4) var(--pp-spacer-5);
    display: flex;
    justify-content: center;
    gap: var(--pp-spacer-3);
    border-top: 1px solid var(--pp-border-color);
    flex-shrink: 0;
}

/* 按钮样式 */
.pp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-sizing: border-box;
    outline: none;
    cursor: pointer;
    user-select: none;
    vertical-align: middle;
    white-space: nowrap;
    text-decoration: none;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 14px;
    line-height: 22px;
    font-weight: 500;
    border-radius: var(--pp-radius-medium);
    transition: all 0.2s cubic-bezier(0.38, 0, 0.24, 1);
    letter-spacing: 0.2px;
    min-height: 36px;
}

.pp-btn i {
    margin-right: var(--pp-spacer-1);
    font-size: 16px;
}

.pp-btn span {
    margin-left: 0;
}

.pp-btn:active {
    transform: scale(0.95);
}

.pp-btn--default {
    background-color: var(--pp-white-color);
    border: 1px solid var(--pp-border-color);
    color: var(--pp-text-color-primary);
}

.pp-btn--default:hover {
    background-color: var(--pp-gray-color-1);
    border-color: var(--pp-border-color-hover);
}

.pp-btn--primary {
    background-color: var(--pp-brand-color);
    border: 1px solid var(--pp-brand-color);
    color: var(--pp-white-color);
}

.pp-btn--primary:hover {
    background-color: var(--pp-brand-color-7, #1a6ce6);
    border-color: var(--pp-brand-color-7, #1a6ce6);
}

.pp-btn--danger {
    background-color: var(--pp-error-color);
    border: 1px solid var(--pp-error-color);
    color: var(--pp-white-color);
}

.pp-btn--danger:hover {
    background-color: #dd5248;
    border-color: #dd5248;
}

.pp-btn--ghost {
    background-color: transparent;
    border: 1px solid var(--pp-border-color);
    color: var(--pp-text-color-primary);
}

.pp-btn--ghost:hover {
    background-color: var(--pp-gray-color-1);
    border-color: var(--pp-border-color-hover);
}

.pp-btn--small {
    padding: 0 var(--pp-spacer-3);
    height: 28px;
    font-size: 12px;
    min-width: 60px;
}

.pp-btn--medium {
    padding: 0 var(--pp-spacer-5);
    height: 36px;
    min-width: 88px;
}

.pp-btn--large {
    padding: 0 var(--pp-spacer-6);
    height: 40px;
    font-size: 16px;
    min-width: 100px;
}

/* 打印样式 */
@media print {
    /* 隐藏预览控制元素 */
    .pp-preview-header,
    .pp-preview-toolbar,
    .pp-preview-footer {
        display: none !important;
    }
    
    .pp-preview-modal {
        background-color: transparent !important;
        position: static !important;
        width: auto !important;
        height: auto !important;
        display: block !important;
        overflow: visible !important;
    }
    
    .pp-preview-content {
        overflow: visible !important;
    }
    
    .pp-preview-canvas-container {
        overflow: visible !important;
        background: transparent !important;
        padding: 0 !important;
    }
    
    .pp-preview-page {
        box-shadow: none !important;
        margin: 0 !important;
        page-break-after: always;
        page-break-inside: avoid;
    }
    
    .pp-preview-page:last-child {
        page-break-after: auto;
    }
    
    .pp-preview-canvas {
        transform: none !important;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .pp-preview-header {
        padding: var(--pp-spacer-3) var(--pp-spacer-4);
    }
    
    .pp-preview-toolbar {
        padding: var(--pp-spacer-2) var(--pp-spacer-4);
        height: auto;
        flex-direction: column;
        gap: var(--pp-spacer-3);
    }
    
    .pp-preview-tools {
        width: 100%;
        justify-content: center;
    }
    
    .pp-preview-page-control {
        width: 100%;
        justify-content: center;
    }
    
    .pp-preview-canvas-container {
        padding: var(--pp-spacer-3);
    }
    
    .pp-preview-footer {
        padding: var(--pp-spacer-3) var(--pp-spacer-4);
        flex-wrap: wrap;
    }
    
    .pp-btn {
        font-size: 13px;
    }
    
    .pp-btn--medium {
        padding: 0 var(--pp-spacer-4);
        min-width: 80px;
    }
}

/* 暗黑模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --pp-white-color: #1d1d1d;
        --pp-black-color: #ffffff;
        --pp-gray-color-1: #2f2f2f;
        --pp-gray-color-2: #3a3a3a;
        --pp-gray-color-3: #4a4a4a;
        --pp-gray-color-4: #5a5a5a;
        --pp-gray-color-5: #7a7a7a;
        --pp-gray-color-7: #9a9a9a;
        --pp-gray-color-8: #bababa;
        --pp-gray-color-10: #eaeaea;
        
        --pp-text-color-primary: #ffffffe0;
        --pp-text-color-secondary: #ffffffa6;
        --pp-text-color-placeholder: #ffffff61;
        --pp-text-color-disabled: #ffffff40;
        
        --pp-border-color: #4a4a4a;
        --pp-border-color-hover: #7a7a7a;
        --pp-border-color-active: #eaeaea;
        
        --pp-bg-color-component-disabled: #2a2a2a;
    }
    
    .pp-preview-canvas-container {
        background-image: 
            linear-gradient(45deg, #2a2a2a 25%, transparent 25%),
            linear-gradient(-45deg, #2a2a2a 25%, transparent 25%),
            linear-gradient(45deg, transparent 75%, #2a2a2a 75%),
            linear-gradient(-45deg, transparent 75%, #2a2a2a 75%);
    }
}

/* 设计器横线和竖线元素在预览中的样式覆盖 */
.pp-preview-canvas .mtd-designer-line-horizontal,
.pp-preview-canvas .mtd-designer-line-vertical {
    position: absolute;
    box-sizing: border-box;
    background: transparent;
}

.pp-preview-canvas .mtd-designer-line-horizontal {
    border-top: var(--line-width, 1px) var(--line-style, solid) var(--line-color, #000000);
    border-bottom: none;
    border-left: none;
    border-right: none;
    min-width: 20px;
    height: var(--line-width, 1px);
    min-height: var(--line-width, 1px);
}

.pp-preview-canvas .mtd-designer-line-vertical {
    border-left: var(--line-width, 1px) var(--line-style, solid) var(--line-color, #000000);
    border-right: none;
    border-top: none;
    border-bottom: none;
    min-height: 20px;
    width: var(--line-width, 1px);
    min-width: var(--line-width, 1px);
}

/* 动画效果 */
@keyframes pp-slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pp-fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pp-pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pp-preview-modal.active .pp-preview-page {
    animation: pp-slideIn 0.5s cubic-bezier(0.38, 0, 0.24, 1);
}

.pp-preview-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 200px;
}

.pp-preview-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--pp-gray-color-2);
    border-top: 4px solid var(--pp-brand-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}