/* ============================================================
   detail.css — 文章详情页专属样式
   ============================================================ */

/* ── 文章页头 ── */
.ima-article-hdr {
    padding: 36px 0 32px;
    background: var(--grad-hero);
    color: #fff;
}
.ima-article-hdr--blue   { background: linear-gradient(135deg, #3b82f6, #8b5cf6); }
.ima-article-hdr--cyan   { background: linear-gradient(135deg, #06b6d4, #3b82f6); }
.ima-article-hdr--purple { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.ima-article-hdr--green  { background: linear-gradient(135deg, #10b981, #06b6d4); }
.ima-article-hdr--pink   { background: linear-gradient(135deg, #ec4899, #8b5cf6); }

.ima-breadcrumb--light a       { color: rgba(255,255,255,.7); }
.ima-breadcrumb--light span    { color: rgba(255,255,255,.4); }
.ima-breadcrumb--light .current{ color: rgba(255,255,255,.95); }

.ima-article-title {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    line-height: 1.35;
    margin: 14px 0 16px;
    max-width: 760px;
}
.ima-article-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 13px;
    color: rgba(255,255,255,.8);
}
.ima-meta-author { display: flex; align-items: center; gap: 7px; }
.ima-author-avatar { width: 28px; height: 28px; border-radius: 50%; object-fit: cover; border: 2px solid rgba(255,255,255,.4); }

/* ── 三栏布局 ── */
.ima-article-layout {
    display: grid;
    grid-template-columns: 200px 1fr var(--sidebar-w);
    gap: 32px;
    align-items: start;
}

/* ── TOC 面板 ── */
.ima-toc-panel {
    position: sticky;
    top: calc(var(--nav-h) + 16px);
    max-height: calc(100vh - var(--nav-h) - 48px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--gray-200) transparent;
}
.ima-toc-panel::-webkit-scrollbar { width: 4px; }
.ima-toc-panel::-webkit-scrollbar-thumb { background: var(--gray-200); border-radius: 4px; }

.ima-toc-inner {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 16px;
}
.ima-toc-hdr {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 7px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--gray-100);
    margin-bottom: 10px;
}
.ima-toc-hdr svg { color: var(--primary); flex-shrink: 0; }

.ima-toc-nav { display: flex; flex-direction: column; gap: 2px; }
.ima-toc-nav a {
    display: block;
    font-size: 12px;
    color: var(--gray-500);
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    line-height: 1.45;
    border-left: 2px solid transparent;
    transition: all .15s;
    text-decoration: none;
}
.ima-toc-nav a:hover { color: var(--primary); background: var(--primary-light); }
.ima-toc-nav a.active {
    color: var(--primary);
    background: var(--primary-light);
    border-left-color: var(--primary);
    font-weight: 500;
}
.ima-toc-nav .toc-h3 { padding-left: 20px; font-size: 11px; }
.ima-toc-loading { font-size: 12px; color: var(--gray-400); padding: 8px; }

/* 进度条 */
.ima-toc-progress { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--gray-100); }
.ima-toc-progress-label { font-size: 11px; color: var(--gray-400); margin-bottom: 6px; }
.ima-toc-progress-bar { height: 4px; background: var(--gray-100); border-radius: 4px; overflow: hidden; }
.ima-toc-progress-fill { height: 100%; width: 0; background: var(--grad-primary); border-radius: 4px; transition: width .2s; }

/* ── 正文区 ── */
.ima-article-main { min-width: 0; }

.ima-article-cover {
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 28px;
    max-height: 420px;
}
.ima-article-cover img { width: 100%; object-fit: cover; max-height: 420px; }

/* 正文排版 */
.ima-article-content {
    font-size: 16px;
    line-height: 1.85;
    color: var(--gray-700);
}
.ima-article-content h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    margin: 36px 0 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--gray-200);
}
.ima-article-content h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--gray-900);
    margin: 24px 0 10px;
}
.ima-article-content h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-800, #1f2937);
    margin: 18px 0 8px;
}
.ima-article-content p { margin-bottom: 16px; }
.ima-article-content a { color: var(--primary); text-decoration: underline; text-decoration-color: rgba(59,130,246,.35); }
.ima-article-content a:hover { text-decoration-color: var(--primary); }
.ima-article-content ul, .ima-article-content ol {
    margin: 12px 0 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.ima-article-content ul { list-style: disc; }
.ima-article-content ol { list-style: decimal; }
.ima-article-content li { line-height: 1.7; }
.ima-article-content blockquote {
    border-left: 4px solid var(--primary);
    background: var(--primary-light);
    margin: 20px 0;
    padding: 14px 18px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--primary-dark, #1d4ed8);
    font-size: 15px;
    line-height: 1.7;
}
.ima-article-content code {
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: 4px;
    padding: 2px 6px;
    font-family: var(--font-mono);
    font-size: .88em;
    color: #be185d;
}
.ima-article-content pre {
    background: #0f172a;
    border-radius: var(--radius-md);
    padding: 20px;
    overflow-x: auto;
    margin: 20px 0;
}
.ima-article-content pre code {
    background: none;
    border: none;
    padding: 0;
    color: #e2e8f0;
    font-size: 14px;
    line-height: 1.75;
}
.ima-article-content img {
    border-radius: var(--radius-md);
    margin: 20px 0;
    max-width: 100%;
}
.ima-article-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin: 20px 0;
}
.ima-article-content th {
    background: var(--gray-50);
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
}
.ima-article-content td {
    padding: 9px 14px;
    border: 1px solid var(--gray-200);
    color: var(--gray-600);
}
.ima-article-content tr:nth-child(even) td { background: var(--gray-50); }
.ima-article-content hr { border: none; border-top: 1px solid var(--gray-200); margin: 32px 0; }

/* ── 标签 ── */
.ima-article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0 20px; }
.ima-tag-pill {
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 13px;
    background: var(--primary-light);
    color: var(--primary-dark, #1d4ed8);
    border: 1px solid rgba(59,130,246,.2);
    transition: all .15s;
}
.ima-tag-pill:hover { background: var(--primary); color: #fff; border-color: transparent; }

/* ── 分享栏 ── */
.ima-share-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 0;
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
    margin: 0 0 28px;
    flex-wrap: wrap;
}
.ima-share-label { font-size: 13px; color: var(--gray-400); }
.ima-share-btn {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    border: 1px solid var(--gray-200);
    color: var(--gray-600);
    background: #fff;
    cursor: pointer;
    text-decoration: none;
    transition: all .15s;
}
.ima-share-btn:hover { border-color: var(--primary); color: var(--primary); }

/* ── 作者卡 ── */
.ima-article-author-card {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 32px;
}
.ima-article-author-av { width: 56px; height: 56px; border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.ima-article-author-name { font-size: 15px; font-weight: 600; color: var(--gray-900); margin-bottom: 5px; }
.ima-article-author-bio { font-size: 13px; color: var(--gray-500); line-height: 1.65; }

/* ── 相关推荐 ── */
.ima-related { margin-bottom: 36px; }
.ima-related-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 9px;
}
.ima-related-title::before {
    content: '';
    width: 4px;
    height: 18px;
    border-radius: 2px;
    background: linear-gradient(135deg, #8b5cf6, #ec4899);
    display: inline-block;
}
.ima-related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}
.ima-related-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow .2s, transform .2s;
    text-decoration: none;
}
.ima-related-card:hover { box-shadow: 0 6px 20px rgba(59,130,246,.1); transform: translateY(-2px); }
.ima-related-card img { width: 100%; height: 120px; object-fit: cover; }
.ima-thumb-placeholder--sm { height: 100px; background: var(--grad-primary); opacity: .15; }
.ima-related-body { padding: 12px 14px; }
.ima-related-ttl { font-size: 13px; font-weight: 600; color: var(--gray-900); line-height: 1.45; margin-bottom: 5px; }
.ima-related-meta { font-size: 11px; color: var(--gray-400); }

/* ── 评论区 ── */
.ima-comments { margin-top: 36px; padding-top: 28px; border-top: 1px solid var(--gray-200); }
.ima-comments .comment-list { display: flex; flex-direction: column; gap: 20px; }
.ima-comments .comment-body { background: var(--gray-50); border-radius: var(--radius-md); padding: 16px; }

/* ── 普通页面 ── */
.ima-page-title { font-size: 26px; font-weight: 700; color: var(--gray-900); margin-bottom: 24px; }

/* ── 响应式 ── */
@media (max-width: 1100px) {
    .ima-article-layout { grid-template-columns: 180px 1fr; }
    .ima-article-layout .ima-sidebar { display: none; }
}
@media (max-width: 768px) {
    .ima-article-layout { grid-template-columns: 1fr; }
    .ima-toc-panel {
        position: static;
        max-height: none;
    }
    .ima-article-title { font-size: 22px; }
    .ima-article-hdr { padding: 24px 0; }
    .ima-related-grid { grid-template-columns: 1fr; }
    .ima-article-content h2 { font-size: 18px; }
    .ima-article-content h3 { font-size: 16px; }
    .ima-article-content { font-size: 15px; }
}
@media (max-width: 480px) {
    .ima-article-title { font-size: 19px; }
    .ima-article-content pre { padding: 14px; }
    .ima-article-content table { font-size: 12px; }
}