/* 高级图片查看器样式 */

/* 查看器容器 */
.advanced-image-viewer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    /* 微信浏览器兼容性 */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    -webkit-overflow-scrolling: touch;
}

/* 背景遮罩 */
.viewer-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    cursor: pointer;
}

/* 顶部信息栏 */
.viewer-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10001;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    min-height: 80px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.viewer-title {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.viewer-title span:first-child {
    font-size: 1.2rem;
    font-weight: 600;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.image-info {
    font-size: 0.9rem;
    opacity: 0.8;
    font-weight: 400;
}

.viewer-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.viewer-close:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: scale(1.1);
}

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

/* 图片容器 */
.viewer-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: grab;
    padding: 0; /* 移除内边距，让图片完全填满容器 */
    background: transparent; /* 确保容器背景透明 */
    border: none; /* 移除任何边框 */
    box-shadow: none; /* 移除任何阴影 */
    /* 防止浏览器默认拖拽行为 */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
}

.viewer-container:active {
    cursor: grabbing;
}

.viewer-image {
    max-width: none;
    max-height: none;
    object-fit: none;
    transition: none; /* 移除过渡动画，提升拖拽性能 */
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    pointer-events: none;
    /* 确保图片没有任何边框、阴影或背景 */
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
    outline: none !important;
    /* 启用硬件加速 */
    transform: translate3d(0, 0, 0);
    -webkit-transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    perspective: 1000px;
    -webkit-perspective: 1000px;
    /* 防止浏览器默认拖拽行为 */
    -webkit-user-drag: none;
    -khtml-user-drag: none;
    -moz-user-drag: none;
    -o-user-drag: none;
    user-drag: none;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
    /* 微信浏览器兼容性 */
    -webkit-transform-style: preserve-3d;
    transform-style: preserve-3d;
}

/* 加载状态 */
.viewer-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    color: white;
    z-index: 10002;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 错误状态 */
.viewer-error {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    color: #ffb3ba;
    z-index: 10002;
}

.error-icon {
    font-size: 3rem;
    opacity: 0.7;
}

/* 底部控制栏 */
.viewer-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10001;
    padding: 20px 30px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.viewer-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(0, 0, 0, 0.5);
    padding: 10px 15px;
    border-radius: 25px;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.control-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: bold;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: scale(1.1);
}

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

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

.control-btn:disabled:hover {
    transform: none;
}

.zoom-level {
    font-size: 0.9rem;
    font-weight: 600;
    min-width: 50px;
    text-align: center;
}

.download-btn {
    background: rgba(179, 255, 179, 0.8) !important;
}

.download-btn:hover {
    background: rgba(179, 255, 179, 1) !important;
}

/* 提示文本 */
.viewer-hint {
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.7;
}

.hint-text-mobile {
    display: none;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .viewer-header {
        padding: 15px 20px;
        min-height: 60px;
    }
    
    .viewer-title span:first-child {
        font-size: 1rem;
    }
    
    .image-info {
        font-size: 0.8rem;
    }
    
    .viewer-close {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .viewer-container {
        padding: 0;
    }
    
    .viewer-footer {
        padding: 15px 20px;
    }
    
    .viewer-controls {
        gap: 15px;
        margin-bottom: 10px;
    }
    
    .control-group {
        padding: 8px 12px;
        gap: 8px;
    }
    
    .control-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .zoom-level {
        font-size: 0.8rem;
        min-width: 40px;
    }
    
    .hint-text {
        display: none;
    }
    
    .hint-text-mobile {
        display: block;
    }
}

@media (max-width: 480px) {
    .viewer-header {
        padding: 10px 15px;
        min-height: 50px;
    }
    
    .viewer-title span:first-child {
        font-size: 0.9rem;
    }
    
    .viewer-close {
        width: 35px;
        height: 35px;
        font-size: 1.3rem;
    }
    
    .viewer-controls {
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .control-group {
        padding: 6px 10px;
        gap: 6px;
    }
    
    .control-btn {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
    
    .zoom-level {
        font-size: 0.75rem;
        min-width: 35px;
    }
    
    .viewer-hint {
        font-size: 0.75rem;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .control-btn {
        min-height: 44px;
        min-width: 44px;
        touch-action: manipulation;
    }
    
    .viewer-close {
        min-height: 44px;
        min-width: 44px;
        touch-action: manipulation;
    }
    
    .viewer-container {
        touch-action: pan-x pan-y pinch-zoom;
    }
}

/* 动画效果 */
.advanced-image-viewer {
    animation: fadeIn 0.3s ease;
}

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

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .advanced-image-viewer {
        background: rgba(0, 0, 0, 1);
    }
    
    .control-btn {
        border: 2px solid white;
    }
    
    .viewer-close {
        border: 2px solid white;
    }
}

/* 减少动画模式支持 */
@media (prefers-reduced-motion: reduce) {
    .advanced-image-viewer,
    .viewer-image,
    .control-btn,
    .viewer-close {
        animation: none;
        transition: none;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .advanced-image-viewer {
        background: rgba(0, 0, 0, 0.98);
    }
}

/* 打印样式 */
@media print {
    .advanced-image-viewer {
        display: none !important;
    }
}