/* ============================================================
   Stewie Blog · 文章页样式（爬虫动态渲染专用）
   ⚠ 设计 token 与 Stewie-blog/src/assets/base.css 保持一致，
      改色/字号时请同步两边（token 几乎不变，维护成本低）。
   不依赖 Vite 构建：本文件放 public/，Vite 原样拷贝到 dist/，
   Nginx 稳定路径 /article.css 提供给后端 Thymeleaf 模板。
   ============================================================ */

:root {
  --color-bg: #fafbfc;
  --color-surface: #ffffff;
  --color-heading: #0f172a;
  --color-text: #334155;
  --color-text-secondary: #64748b;
  --color-text-tertiary: #94a3b8;
  --color-border: #e8ecf0;
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-soft: rgba(37, 99, 235, 0.08);
  --color-accent: #f59e0b;
  --color-accent-soft: rgba(245, 158, 11, 0.1);
  --color-bg-soft: #f4f6f8;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
  --radius-md: 10px;
  --radius-lg: 14px;
  --max-width: 760px;
  --header-height: 64px;
}

html.dark {
  --color-bg: #0a0f1c;
  --color-surface: #131a2a;
  --color-heading: #f1f5f9;
  --color-text: #cbd5e1;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary: #64748b;
  --color-border: #1f2937;
  --color-primary: #60a5fa;
  --color-primary-hover: #93c5fd;
  --color-primary-soft: rgba(96, 165, 250, 0.12);
  --color-accent: #fbbf24;
  --color-accent-soft: rgba(251, 191, 36, 0.12);
  --color-bg-soft: #111827;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { color: var(--color-heading); line-height: 1.3; font-weight: 700; }

/* ── 顶部导航（极简，链接回 SPA 各页） ── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 24px;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}
.site-nav__brand { font-weight: 800; font-size: 18px; color: var(--color-heading); }
.site-nav__links { display: flex; gap: 20px; }
.site-nav__links a { color: var(--color-text-secondary); font-weight: 600; font-size: 14px; }

/* ── 文章容器 ── */
.article-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 56px 24px 80px;
}

.article__tags { display: flex; gap: 8px; align-items: center; margin-bottom: 14px; }
.article__tag {
  padding: 4px 12px; font-size: 12px; font-weight: 600; color: #fff;
  background: var(--color-primary); border-radius: 999px;
}
.article__category {
  font-size: 12px; font-weight: 700; color: var(--color-primary);
  letter-spacing: 0.08em; text-transform: uppercase;
}

.article__title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.article__meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 13px; color: var(--color-text-tertiary); margin-bottom: 32px;
}
.article__author { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; color: var(--color-text-secondary); }
.article__avatar { width: 22px; height: 22px; border-radius: 50%; object-fit: cover; }
.article__dot { opacity: 0.5; }

.article__cover {
  width: 100%; max-height: 420px; object-fit: cover;
  border-radius: var(--radius-lg); margin-bottom: 36px;
}

/* ── 正文排版（与 SPA .article-content 一致） ── */
.article-content { color: var(--color-text); }
.article-content h2 { font-size: 1.5rem; margin: 2em 0 0.8em; }
.article-content h3 { font-size: 1.25rem; margin: 1.6em 0 0.6em; }
.article-content p { margin: 0 0 1.2em; }
.article-content ul, .article-content ol { margin: 0 0 1.2em 1.6em; }
.article-content li { margin: 0.4em 0; }
.article-content blockquote {
  border-left: 3px solid var(--color-primary);
  background: var(--color-primary-soft);
  padding: 12px 18px; margin: 1.4em 0; border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-secondary);
}
.article-content img { max-width: 100%; height: auto; border-radius: var(--radius-md); margin: 1.2em 0; }
.article-content a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 2px; }
.article-content code {
  font-family: var(--font-mono); font-size: 0.875em;
  background: var(--color-bg-soft); padding: 0.15em 0.4em; border-radius: 4px;
  color: var(--color-accent);
}
.article-content pre {
  background: var(--color-bg-soft); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 16px 18px; overflow-x: auto;
  margin: 1.2em 0; font-size: 0.875rem; line-height: 1.6;
}
.article-content pre code { background: none; padding: 0; color: inherit; }

.article__back { margin-top: 48px; font-size: 14px; }

/* ── 评论区 ── */
.comments { margin-top: 56px; padding-top: 36px; border-top: 1px solid var(--color-border); }
.comments__title { font-size: 1.3rem; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.comments__count {
  display: inline-grid; place-items: center; min-width: 24px; height: 24px; padding: 0 8px;
  font-size: 12px; color: var(--color-primary); background: var(--color-primary-soft); border-radius: 999px;
}
.comments__list { list-style: none; display: flex; flex-direction: column; gap: 20px; }
.comments__list--reply { margin: 14px 0 0 0; padding-left: 16px; border-left: 2px solid var(--color-border); gap: 12px; }
.comment { display: flex; gap: 12px; }
.comment__avatar {
  flex-shrink: 0; width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center; font-weight: 700; color: #fff;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
}
.comment__avatar--sm { width: 32px; height: 32px; font-size: 13px; }
.comment__body { flex: 1; min-width: 0; }
.comment__meta { display: flex; gap: 10px; align-items: baseline; margin-bottom: 4px; }
.comment__nick { font-weight: 700; color: var(--color-heading); font-size: 14px; }
.comment__date { font-size: 12px; color: var(--color-text-tertiary); }
.comment__content { color: var(--color-text-secondary); font-size: 14.5px; word-break: break-word; }
.comments__note { margin-top: 18px; font-size: 13px; color: var(--color-text-tertiary); }

/* ── 热门文章内链 ── */
.popular {
  margin-top: 48px; padding: 22px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.popular__title { font-size: 14px; margin-bottom: 14px; }
.popular__list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.popular__link { color: var(--color-text); font-size: 13.5px; line-height: 1.5; }
.popular__link:hover { color: var(--color-primary); }

/* ── 页脚 ── */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 24px; text-align: center;
  font-size: 13px; color: var(--color-text-tertiary);
}

/* ── 404 ── */
.notfound { text-align: center; padding: 60px 0; }
.notfound__code { font-size: 96px; font-weight: 800; color: var(--color-primary); }
.notfound__title { font-size: 24px; margin: 8px 0 12px; }
.notfound__desc { color: var(--color-text-secondary); margin-bottom: 24px; }
.notfound__btn {
  display: inline-block; padding: 10px 24px; border-radius: 999px;
  background: var(--color-primary); color: #fff; font-weight: 600;
}
.notfound__btn:hover { text-decoration: none; background: var(--color-primary-hover); }

@media (max-width: 640px) {
  .article-wrap { padding: 36px 16px 60px; }
  .site-nav { padding: 0 16px; }
}