/*
Theme Name: Chaofan Tech
Theme URI: https://www.bdchaofan.com
Author: 超凡科技
Author URI: https://www.bdchaofan.com
Description: 内江超凡科技官网配套博客主题，深色科技风，与官网首页视觉统一。
Version: 1.0.0
Requires at least: 5.5
Tested up to: 6.6
Requires PHP: 7.4
License: GNU General Public License v2 or later
Text Domain: chaofan-tech
*/

:root {
  --bg: #05060f;
  --panel: rgba(255,255,255,0.035);
  --panel-border: rgba(255,255,255,0.08);
  --text: #e7ebf6;
  --muted: #98a1b8;
  --cyan: #22d3ee;
  --blue: #3b82f6;
  --violet: #8b5cf6;
  --grad: linear-gradient(135deg, #22d3ee 0%, #3b82f6 50%, #8b5cf6 100%);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  background-image:
    radial-gradient(1000px 600px at 80% -10%, rgba(59,130,246,0.14), transparent 60%),
    radial-gradient(900px 500px at 10% 30%, rgba(139,92,246,0.10), transparent 60%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.8;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
.container { width: min(1080px, 92%); margin: 0 auto; }

/* 头部 */
.site-header {
  border-bottom: 1px solid rgba(255,255,255,0.07);
  background: rgba(5,6,15,0.72);
  backdrop-filter: blur(12px);
  position: sticky; top: 0; z-index: 100;
}
.site-header .inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; }
.brand .logo-mark {
  width: 38px; height: 38px; border-radius: 10px; background: var(--grad);
  display: grid; place-items: center; color: #fff; font-size: 18px; font-weight: 900;
  box-shadow: 0 0 16px rgba(59,130,246,0.4);
}
.brand small { display: block; font-size: 10px; font-weight: 500; color: var(--muted); letter-spacing: 0.2em; line-height: 1.2; }
.main-nav { display: flex; gap: 6px; }
.main-nav a { padding: 8px 16px; border-radius: 10px; font-size: 15px; color: var(--muted); transition: all .2s; }
.main-nav a:hover, .main-nav a.active { color: #fff; background: rgba(255,255,255,0.06); }

/* 文章列表 */
.posts-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; padding: 48px 0 24px; }
.post-card {
  border-radius: 16px; background: var(--panel); border: 1px solid var(--panel-border);
  padding: 26px; transition: transform .3s, border-color .3s, box-shadow .3s;
}
.post-card:hover { transform: translateY(-6px); border-color: rgba(255,255,255,0.2); box-shadow: 0 16px 40px rgba(0,0,0,0.4); }
.post-card .cat { font-size: 12px; color: var(--cyan); letter-spacing: .1em; margin-bottom: 10px; }
.post-card h2 { font-size: 20px; font-weight: 700; line-height: 1.4; margin-bottom: 10px; }
.post-card h2 a:hover { color: var(--cyan); }
.post-card .meta { font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.post-card .excerpt { font-size: 15px; color: var(--muted); }

/* 单篇文章 */
.single-wrap { padding: 48px 0 64px; }
.single-head { margin-bottom: 28px; }
.single-head .cat { font-size: 13px; color: var(--cyan); letter-spacing: .1em; margin-bottom: 10px; }
.single-head h1 { font-size: clamp(26px, 4vw, 40px); font-weight: 800; line-height: 1.3; margin-bottom: 14px; }
.single-head .meta { color: var(--muted); font-size: 14px; }
.entry-content { font-size: 16px; color: #c7cedf; max-width: 780px; }
.entry-content h2 { font-size: 24px; font-weight: 700; color: #fff; margin: 34px 0 14px; }
.entry-content h3 { font-size: 19px; font-weight: 700; color: #fff; margin: 26px 0 10px; }
.entry-content p { margin-bottom: 16px; }
.entry-content ul, .entry-content ol { margin: 0 0 16px 22px; }
.entry-content li { margin-bottom: 8px; }
.entry-content a { color: var(--cyan); }
.entry-content blockquote { border-left: 3px solid var(--cyan); padding-left: 16px; color: var(--muted); margin: 20px 0; }
.entry-content table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15px; }
.entry-content th, .entry-content td { border: 1px solid rgba(255,255,255,0.12); padding: 10px 12px; text-align: left; }
.entry-content th { background: rgba(255,255,255,0.06); color: #fff; }

.back-link {
  display: inline-block; margin-top: 40px; padding: 12px 26px; border-radius: 999px;
  color: #fff; background: var(--grad); box-shadow: 0 8px 24px rgba(59,130,246,0.4);
  transition: transform .2s;
}
.back-link:hover { transform: translateY(-2px); }

/* 分页 */
.pagination { display: flex; gap: 8px; justify-content: center; padding: 0 0 48px; }
.pagination .page-numbers { padding: 8px 14px; border-radius: 10px; background: var(--panel); border: 1px solid var(--panel-border); color: var(--muted); }
.pagination .page-numbers.current { color: #fff; background: var(--grad); border-color: transparent; }

/* 页脚 */
.site-footer {
  border-top: 1px solid rgba(255,255,255,0.07); padding: 30px 0; text-align: center;
  font-size: 13px; color: var(--muted); background: rgba(5,6,15,0.6);
}
.site-footer a:hover { color: var(--cyan); }

/* 空状态 */
.no-posts { text-align: center; padding: 80px 0; color: var(--muted); }

@media (max-width: 640px) {
  .main-nav { display: none; }
  .posts-grid { grid-template-columns: 1fr; }
}