/* 留言板按钮容器 */
.guestbook-btn-container {
    position: fixed;
    top: 20px;
    right: 80px;
    z-index: 999;
}

/* 博客文章按钮容器 */
.blog-posts-btn-container {
    position: fixed;
    top: 115px;
    right: 80px;
    z-index: 999;
}

/* 旅途剪影按钮容器 */
.photo-album-btn-container {
    position: fixed;
    top: 210px;
    right: 80px;
    z-index: 999;
}

/* 透明桥梁：向左延伸覆盖预览面板区域，确保鼠标滑入时 hover 不中断 */
.guestbook-btn-container::after,
.blog-posts-btn-container::after,
.photo-album-btn-container::after {
    content: '';
    position: absolute;
    right: 80px; /* 从容器的左边缘开始 */
    top: 0;
    width: 200px; /* 15px 间距 + 380px 预览面板宽度 */
    height: 80px; /* 与按钮高度一致 */
    background: transparent;
    pointer-events: auto;
}


.guestbook-btn {
    background: #fff;
    border: 1px solid #e8e8e8;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.blog-posts-btn {
    background: #fff;
    border: 1px solid #e8e8e8;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.photo-album-btn {
    background: #fff;
    border: 1px solid #e8e8e8;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.btn-label {
    font-size: 13px;
    color: #666;
    line-height: 1;
}

.guestbook-btn:hover,
.blog-posts-btn:hover {
    border-color: #d0d0d0;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px) scale(1.05);
}

.guestbook-btn svg,
.blog-posts-btn svg {
    width: 32px;
    height: 32px;
}

.guestbook-btn svg path,
.blog-posts-btn svg path {
    transition: stroke 0.3s ease;
}

.guestbook-btn:hover svg path,
.blog-posts-btn:hover svg path {
    stroke: #333;
}

/* Hover 浮动预览面板 */
.guestbook-preview,
.blog-posts-preview,
.photo-album-preview {
    visibility: hidden;
    position: absolute;
    top: 0;
    right: calc(100% + 15px); /* 在按钮左侧显示 */
    width: 380px;
    max-height: 400px;
    background: linear-gradient(to bottom, #fafafa, #fff);
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15), 0 4px 12px rgba(0, 0, 0, 0.08);
    z-index: 1000;
    opacity: 0;
    transform: translateX(20px) scale(0.95);
    transform-origin: center right;
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                visibility 0.5s;
    overflow: hidden;
    border: 1px solid rgba(240, 240, 240, 0.8);
    pointer-events: none;
    backdrop-filter: blur(20px);
}

/* 当鼠标悬停在容器上时显示预览面板 */
.guestbook-btn-container:hover .guestbook-preview,
.blog-posts-btn-container:hover .blog-posts-preview,
.photo-album-btn-container:hover .photo-album-preview {
    visibility: visible;
    opacity: 1;
    transform: translateX(0) scale(1);
    pointer-events: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18), 0 8px 20px rgba(0, 0, 0, 0.1);
}

.preview-header {
    padding: 14px 18px;
    border-bottom: 1px solid #f0f0f0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
}

.preview-header h3 {
    margin: 0;
    font-size: 15px;
    color: #333;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.preview-body {
    padding: 0;
    overflow-y: auto;
    max-height: calc(400px - 50px);
}

.preview-item {
    padding: 12px 18px;
    border-bottom: 1px solid #f5f5f5;
    transition: background 0.2s ease;
}

.preview-item:last-child {
    border-bottom: none;
}

.preview-item:hover {
    background: #fafafa;
}

.preview-nickname {
    font-weight: 500;
    color: #333;
    font-size: 13px;
    margin-bottom: 4px;
}

.preview-content {
    color: #666;
    font-size: 12px;
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.preview-time {
    color: #999;
    font-size: 11px;
    margin-top: 4px;
}

.preview-complete {
    text-align: center;
    padding: 15px;
    color: #bbb;
    font-size: 12px;
    font-style: italic;
}

/* 完整留言板弹窗（点击后显示） */
.guestbook-full-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.guestbook-full-modal.active {
    display: flex;
}

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

.full-modal-content {
    background: #fff;
    border-radius: 12px;
    width: 92%;
    max-width: 850px;
    max-height: 92vh;
    overflow: hidden;
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.18);
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Toast 弹窗 */
.toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100000;
    pointer-events: none;
}

.toast {
    background: rgba(51, 51, 51, 0.95);
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 13px;
    margin-bottom: 10px;
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.success {
    background: rgba(76, 175, 80, 0.95);
}

.toast.error {
    background: rgba(244, 67, 54, 0.95);
}

/* 留言板模态框 */
.guestbook-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}

.guestbook-modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.guestbook-content {
    background: #fff;
    border-radius: 8px;
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    overflow: hidden;
    /* box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15); */
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.guestbook-header {
    padding: 16px 20px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
}

.guestbook-header h2 {
    margin: 0;
    font-size: 16px;
    color: #333;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.guestbook-close {
    background: none;
    border: none;
    font-size: 24px;
    color: #999;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.3s ease;
}

.guestbook-close:hover {
    color: #333;
}

.guestbook-body {
    padding: 0;
    overflow-y: auto;
    max-height: calc(92vh - 60px);
}

/* 留言表单 - 固定在顶部 */
.guestbook-form {
    margin-bottom: 15px;
    padding: 15px 20px;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 10;
}

/* 留言列表 */
.guestbook-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 15px 20px;
}

.guestbook-item {
    padding: 10px 12px;
    border: 1px solid #f0f0f0;
    border-radius: 6px;
    background: #fff;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-bottom: 0;
}

.guestbook-item:hover {
    border-color: #e0e0e0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-1px);
}

.guestbook-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid #f5f5f5;
}

/* 头像样式 */
.guestbook-item-header > div:first-child img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #f5f5f5;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06);
}

.guestbook-item:hover .guestbook-item-header > div:first-child img {
    border-color: #e0e0e0;
    transform: scale(1.05);
}

.guestbook-reply .guestbook-item-header > div:first-child img {
    width: 28px;
    height: 28px;
}

.guestbook-nickname {
    font-weight: 500;
    color: #333;
    font-size: 13px;
}

.guestbook-nickname a {
    color: #333;
    text-decoration: none;
    border-bottom: 1px dotted #999;
    transition: all 0.3s ease;
}

.guestbook-nickname a:hover {
    color: #000;
    border-bottom-color: #333;
}

.guestbook-meta {
    font-size: 11px;
    color: #999;
}

.guestbook-content {
    color: #555;
    line-height: 1.6;
    font-size: 13px;
    word-wrap: break-word;
    padding: 4px 0;
}

/* 美化留言内容中的 HTML 元素 */
.guestbook-content p {
    margin: 0 0 6px 0;
    line-height: 1.6;
}

.guestbook-content p:last-child {
    margin-bottom: 0;
}

.guestbook-content a {
    color: #333;
    text-decoration: none;
    border-bottom: 1px dotted #999;
    transition: all 0.3s ease;
}

.guestbook-content a:hover {
    color: #000;
    border-bottom-color: #333;
}

.guestbook-content img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 6px 0;
}

.guestbook-content blockquote {
    margin: 6px 0;
    padding: 8px 12px;
    background: #f9f9f9;
    border-left: 3px solid #ddd;
    color: #666;
    font-style: italic;
}

.guestbook-content code {
    background: #f5f5f5;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    color: #e74c3c;
}

.guestbook-content pre {
    background: #f5f5f5;
    padding: 8px;
    border-radius: 4px;
    overflow-x: auto;
    margin: 6px 0;
}

.guestbook-content pre code {
    background: none;
    padding: 0;
    color: #333;
}

/* 留言底部信息（浏览器、系统、地址） */
.guestbook-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid #f5f5f5;
}

.guestbook-info-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: #999;
    transition: color 0.3s ease;
}

.guestbook-info-item svg {
    opacity: 0.6;
}

.guestbook-info-item:hover {
    color: #666;
}

.guestbook-reply {
    margin-top: 15px;
    padding: 12px 15px;
    background: #f9f9f9;
    border-radius: 4px;
    border-left: 3px solid #ddd;
}

.guestbook-reply .guestbook-item {
    background: transparent;
    border: none;
    padding: 10px 0;
    margin-bottom: 10px;
}

.guestbook-reply .guestbook-item:last-child {
    margin-bottom: 0;
}

.guestbook-reply .guestbook-item:hover {
    box-shadow: none;
}

.guestbook-reply .guestbook-nickname {
    font-size: 13px;
    color: #666;
}

.guestbook-reply .guestbook-content {
    font-size: 13px;
    color: #777;
    line-height: 1.6;
}

/* 留言表单 - 固定在顶部 */
.guestbook-form {
    margin-bottom: 12px;
    padding: 12px 20px;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 10;
}

.form-row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.form-group {
    flex: 1;
}

.form-group-full {
    margin-bottom: 8px;
}

.form-group label {
    display: block;
    margin-bottom: 3px;
    color: #666;
    font-size: 11px;
}

.form-group input,
.form-group textarea,
.form-group-full textarea {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid #e8e8e8;
    border-radius: 4px;
    font-size: 12px;
    color: #333;
    background: #fafafa;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group-full textarea:focus {
    outline: none;
    border-color: #999;
    background: #fff;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

.form-group textarea,
.form-group-full textarea {
    resize: vertical;
    min-height: 50px;
    line-height: 1.5;
    font-family: inherit;
}

.form-group textarea::placeholder,
.form-group-full textarea::placeholder {
    color: #bbb;
}

.form-submit {
    text-align: right;
    margin-top: 10px;
}

.submit-btn {
    background: #333;
    color: #fff;
    border: none;
    padding: 8px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.submit-btn:hover {
    background: #000;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    background: #ccc;
    box-shadow: none;
    cursor: not-allowed;
}

/* 加载状态 */
.guestbook-loading {
    text-align: center;
    padding: 30px 25px;
    color: #999;
    font-size: 14px;
}

.guestbook-empty {
    text-align: center;
    padding: 40px 25px;
    color: #999;
    font-size: 14px;
}

/* 加载更多按钮 */
.load-more-btn {
    display: block;
    margin: 20px auto 20px auto;
    background: #fff;
    border: 1px solid #e8e8e8;
    color: #666;
    padding: 10px 30px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.load-more-btn:hover {
    border-color: #999;
    color: #333;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transform: translateY(-1px);
}

.load-more-btn:disabled {
    color: #ccc;
    border-color: #eee;
    cursor: not-allowed;
}

/* 加载完成提示 */
.load-complete {
    text-align: center;
    padding: 20px 25px;
    color: #bbb;
    font-size: 13px;
    font-style: italic;
}

/* 博客文章列表样式 */
.blog-post-item {
    padding: 12px;
    border-bottom: 1px solid #f5f5f5;
    transition: background-color 0.3s ease;
}

.blog-post-item:last-child {
    border-bottom: none;
}

.blog-post-item:hover {
    background-color: #fafafa;
}

.blog-post-title {
    font-size: 14px;
    color: #333;
    margin-bottom: 6px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    color: #999;
}

.blog-post-category {
    background: #f0f0f0;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 10px;
}

/* 旅途剪影预览面板样式 - 列表模式 */
.photo-album-container {
    padding: 10px;
}

.photo-preview-item {
    margin-bottom: 10px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.photo-preview-item:hover {
    transform: scale(1.05);
}

.photo-preview-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 旅途剪影瀑布流布局 */
.photo-album-grid {
    column-count: 3;
    column-gap: 15px;
    padding: 20px;
}

@media (max-width: 1200px) {
    .photo-album-grid {
        column-count: 2;
    }
}

@media (max-width: 768px) {
    .photo-album-grid {
        column-count: 2;
        column-gap: 10px;
        padding: 10px;
    }
}

.photo-album-item {
    break-inside: avoid;
    margin-bottom: 15px;
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    background-color: #f0f0f0; /* 占位背景色 */
    min-height: 200px; /* 最小高度，防止塌陷 */
}

.photo-album-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.photo-album-item img {
    width: 100%;
    height: auto;
    display: block;
    opacity: 0; /* 初始隐藏，加载完再显示 */
    transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.photo-album-item:hover img {
    transform: scale(1.1);
}

/* 照片放大弹窗 */
.photo-lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.photo-lightbox.active {
    display: flex;
}

.photo-lightbox img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    animation: zoomIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    transition: opacity 0.3s ease;
}

.photo-lightbox-close {
    position: absolute;
    top: 30px;
    right: 40px;
    font-size: 40px;
    color: #fff;
    cursor: pointer;
    transition: transform 0.3s ease;
    z-index: 10001;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.photo-lightbox-close:hover {
    transform: rotate(90deg);
    background: rgba(255, 255, 255, 0.2);
}

/* 左右切换按钮 */
.photo-lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 50px;
    color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10001;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    user-select: none;
}

.photo-lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-50%) scale(1.1);
}

.photo-lightbox-prev {
    left: 40px;
}

.photo-lightbox-next {
    right: 40px;
}

/* 图片计数器 */
.photo-lightbox-counter {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 16px;
    background: rgba(0, 0, 0, 0.5);
    padding: 8px 20px;
    border-radius: 20px;
    z-index: 10001;
}

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

@keyframes zoomIn {
    from { 
        opacity: 0;
        transform: scale(0.8);
    }
    to { 
        opacity: 1;
        transform: scale(1);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .guestbook-btn-container {
        right: 15px;
        top: 15px;
    }
    
    .blog-posts-btn-container {
        right: 15px;
        top: 90px;
    }
    
    .photo-album-btn-container {
        right: 15px;
        top: 165px;
    }
    
    /* 移动端预览面板调整位置，避免超出屏幕 */
    .guestbook-preview,
    .blog-posts-preview,
    .photo-album-preview {
        right: auto;
        left: calc(100% + 10px);
        transform-origin: center left;
        transform: translateX(-20px) scale(0.95);
    }

    .guestbook-btn-container:hover .guestbook-preview,
    .blog-posts-btn-container:hover .blog-posts-preview,
    .photo-album-btn-container:hover .photo-album-preview {
        transform: translateX(0) scale(1);
    }
    
    .guestbook-content {
        width: 95%;
        max-height: 90vh;
    }
    
    .guestbook-body {
        padding: 0;
    }
    
    .guestbook-form {
        padding: 15px 20px;
    }
    
    .guestbook-list {
        padding: 20px;
    }
    
    .guestbook-loading,
    .guestbook-empty,
    .load-complete {
        padding-left: 20px;
        padding-right: 20px;
    }
    
    /* 移动端表单改为垂直排列 */
    .form-row {
        flex-direction: column;
        gap: 15px;
    }
}