/* ============================================================
   BLOG SINGLE PAGE (single.css)
   ============================================================ */

/* ---- 页面容器 ---- */
.page-content {
    flex: 1;
    padding: 32px 24px 60px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* ---- Breadcrumb ---- */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--slate-500);
    padding-bottom: 16px;
    border-bottom: 1px solid var(--slate-200);
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.breadcrumb a {
    color: var(--slate-500);
    transition: color 0.2s ease;
}
.breadcrumb a:hover {
    color: var(--blue-500);
}
.breadcrumb .sep {
    color: var(--slate-300);
    font-size: 10px;
}
.breadcrumb .current {
    color: var(--slate-900);
    font-weight: 600;
}

/* ---- 文章卡片 ---- */
.blog-single {
    background: var(--white);
    border-radius: 14px;
    border: 1px solid var(--slate-200);
    padding: 40px 48px;
}

/* ---- 文章头部 ---- */
.blog-single-header {
    margin-bottom: 24px;
}

.blog-single-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--slate-400);
}
.blog-single-meta .post-category {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--blue-500);
    background: rgba(0, 104, 204, 0.08);
    padding: 3px 16px;
    border-radius: 100px;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}
.blog-single-meta i {
    margin-right: 4px;
    color: var(--blue-500);
}

.blog-single-header h1 {
    font-size: 34px;
    font-weight: 700;
    color: var(--slate-900);
    line-height: 1.2;
    margin: 0 0 8px 0;
    letter-spacing: -0.02em;
}

/* ---- 特色图片 ---- */
.blog-single-image {
    width: 100%;
    aspect-ratio: 2.2/1;
    border-radius: 10px;
    overflow: hidden;
    background: var(--slate-100);
    margin: 20px 0 28px 0;
}
.blog-single-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---- 文章正文 ---- */
.blog-single-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--slate-700);
}
.blog-single-content p {
    margin-bottom: 20px;
}
.blog-single-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--slate-900);
    margin: 36px 0 14px 0;
    letter-spacing: -0.01em;
}
.blog-single-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--slate-900);
    margin: 28px 0 10px 0;
}
.blog-single-content ul,
.blog-single-content ol {
    padding-left: 24px;
    margin-bottom: 20px;
}
.blog-single-content ul li,
.blog-single-content ol li {
    margin-bottom: 6px;
}
.blog-single-content blockquote {
    border-left: 4px solid var(--blue-500);
    padding: 16px 24px;
    margin: 24px 0;
    background: var(--slate-50);
    border-radius: 0 8px 8px 0;
    color: var(--slate-600);
    font-style: italic;
}
.blog-single-content blockquote p {
    margin-bottom: 0;
}
.blog-single-content blockquote cite {
    display: block;
    margin-top: 8px;
    font-size: 14px;
    font-style: normal;
    color: var(--slate-400);
}
.blog-single-content .wp-block-image img,
.blog-single-content img.aligncenter,
.blog-single-content img.alignnone {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 24px 0;
    background: var(--slate-100);
}
.blog-single-content .wp-caption {
    margin: 24px 0;
}
.blog-single-content .wp-caption-text {
    font-size: 13px;
    color: var(--slate-400);
    text-align: center;
    margin-top: 4px;
}

/* ---- 标签 ---- */
.blog-single-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 24px;
    margin-top: 28px;
    border-top: 1px solid var(--slate-200);
}
.blog-single-tags .label {
    font-size: 13px;
    font-weight: 600;
    color: var(--slate-500);
    margin-right: 4px;
    display: inline-flex;
    align-items: center;
}
.blog-single-tags a {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    color: var(--slate-500);
    background: var(--slate-50);
    padding: 4px 14px;
    border-radius: 100px;
    border: 1px solid var(--slate-200);
    transition: all 0.2s ease;
}
.blog-single-tags a:hover {
    color: var(--white);
    background: var(--blue-500);
    border-color: var(--blue-500);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 104, 204, 0.25);
}

/* ---- 上下篇导航 ---- */
.blog-single-nav {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    padding-top: 20px;
    margin-top: 20px;
    border-top: 1px solid var(--slate-200);
    flex-wrap: wrap;
}
.blog-single-nav .nav-prev,
.blog-single-nav .nav-next {
    flex: 1;
    min-width: 120px;
}
.blog-single-nav .nav-prev a,
.blog-single-nav .nav-next a {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: var(--slate-600);
    transition: color 0.2s ease;
}
.blog-single-nav .nav-prev a:hover,
.blog-single-nav .nav-next a:hover {
    color: var(--blue-500);
}
.blog-single-nav .nav-next {
    text-align: right;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 820px) {
    .page-content {
        padding: 20px 16px 40px;
    }
    .blog-single {
        padding: 24px 20px;
    }
    .blog-single-header h1 {
        font-size: 26px;
    }
    .blog-single-image {
        aspect-ratio: 1.8/1;
    }
    .blog-single-content {
        font-size: 15px;
    }
    .blog-single-content h2 {
        font-size: 20px;
    }
    .blog-single-content h3 {
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    .page-content {
        padding: 16px 12px 32px;
    }
    .breadcrumb {
        font-size: 12px;
        padding-bottom: 12px;
        margin-bottom: 16px;
    }
    .blog-single {
        padding: 20px 16px;
        border-radius: 10px;
    }
    .blog-single-header h1 {
        font-size: 22px;
    }
    .blog-single-meta {
        font-size: 12px;
    }
    .blog-single-meta .post-category {
        font-size: 10px;
        padding: 2px 12px;
    }
    .blog-single-image {
        aspect-ratio: 1.6/1;
        border-radius: 8px;
        margin: 16px 0 20px 0;
    }
    .blog-single-content {
        font-size: 15px;
    }
    .blog-single-content blockquote {
        padding: 12px 16px;
        margin: 16px 0;
    }
    .blog-single-tags {
        padding-top: 18px;
        margin-top: 20px;
    }
    .blog-single-nav {
        padding-top: 16px;
        margin-top: 16px;
        flex-direction: column;
        gap: 12px;
    }
    .blog-single-nav .nav-next {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .page-content {
        padding: 12px 8px 24px;
    }
    .breadcrumb {
        font-size: 11px;
        padding-bottom: 10px;
        margin-bottom: 12px;
        gap: 4px;
    }
    .blog-single {
        padding: 16px 12px;
        border-radius: 8px;
    }
    .blog-single-header h1 {
        font-size: 19px;
    }
    .blog-single-meta {
        font-size: 11px;
        gap: 8px;
    }
    .blog-single-meta .post-category {
        font-size: 9px;
        padding: 1px 10px;
    }
    .blog-single-image {
        aspect-ratio: 1.4/1;
        margin: 12px 0 16px 0;
    }
    .blog-single-content {
        font-size: 14px;
        line-height: 1.7;
    }
    .blog-single-content h2 {
        font-size: 18px;
        margin-top: 28px;
    }
    .blog-single-content h3 {
        font-size: 16px;
        margin-top: 22px;
    }
    .blog-single-content blockquote {
        padding: 10px 14px;
        margin: 12px 0;
        font-size: 14px;
    }
    .blog-single-content ul,
    .blog-single-content ol {
        padding-left: 18px;
    }
    .blog-single-tags {
        gap: 6px;
        padding-top: 14px;
        margin-top: 16px;
    }
    .blog-single-tags a {
        font-size: 11px;
        padding: 3px 12px;
    }
}