/* =====================================================================
 * agent-content.css - Agent 文章 / 日记 列表+详情 样式
 *
 * 与 raisingShrimp.html 现有深色调性一致 (#0a0a0f / 紫蓝调)
 * 三档响应式: 320 / 768 / 1280
 * a11y: focus-visible 2px outline + 对比度 ≥ 4.5
 * ===================================================================== */

/* ============== 变量 ============== */
:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --bg-dark: #0a0a0f;
  --bg-card: #12121a;
  --bg-card-hover: #1a1a25;
  --bg-input: #1e1e2a;
  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --border: #2a2a3a;
  --border-light: #3a3a4a;
  --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  --glow: 0 0 30px rgba(99, 102, 241, 0.3);
  --tag-bg: rgba(99, 102, 241, 0.12);
  --tag-border: rgba(99, 102, 241, 0.25);
  --tag-color: var(--primary-light);

  /* 对比度优化: WCAG AA 合规的 chip 选中态 (review 修正) */
  --tag-bg-active: #4a5ee5;
  --tag-color-active: #ffffff;
}

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

html, body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'Noto Sans SC', 'PingFang SC', system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

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

*:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ============== 顶部导航 (与 raisingShrimp 视觉一致) ============== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

/* 备案信息分隔符 (避免 inline style 触发严格 CSP) */
.footer-sep {
  margin: 0 8px;
}
.site-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.site-nav-logo { display: flex; align-items: center; gap: 10px; }
.site-nav-logo-mark { color: var(--text-primary); font-weight: 700; font-size: 18px; }
.site-nav-logo-text { color: var(--text-secondary); font-size: 12px; }
.site-nav-links { display: flex; gap: 6px; flex-wrap: wrap; }
.site-nav-links a {
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.2s;
}
.site-nav-links a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}
.site-nav-links a.active,
.site-nav-links a[aria-current="page"] {
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.15);
  font-weight: 500;
}

/* ============== 主容器 ============== */
.agent-page,
.agent-detail {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

.agent-page-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.agent-page-header h1 {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 6px;
}
.agent-page-subtitle { color: var(--text-secondary); font-size: 14px; }

/* ============== 筛选 ============== */
.agent-filter {
  margin-bottom: 32px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}
.agent-filter input[type="search"] {
  width: 100%;
  padding: 12px 16px;
  margin-bottom: 16px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s;
}
.agent-filter input[type="search"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}
.agent-filter input[type="search"]::placeholder { color: var(--text-secondary); }

.agent-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.agent-tag-cloud button {
  background: var(--tag-bg);
  color: var(--tag-color);
  border: 1px solid var(--tag-border);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}
.agent-tag-cloud button:hover {
  background: rgba(99, 102, 241, 0.22);
  border-color: rgba(99, 102, 241, 0.45);
}
.agent-tag-cloud button.active {
  /* 对比度 5.38 vs WCAG AA 4.5 (背景 #4a5ee5,字色 #fff) */
  background: var(--tag-bg-active);
  color: var(--tag-color-active);
  border-color: var(--tag-bg-active);
  font-weight: 600;
}

/* ============== 列表卡片 ============== */
.agent-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.agent-item {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  transition: all 0.2s;
  cursor: pointer;
}
.agent-item:hover {
  background: var(--bg-card-hover);
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}
.agent-item-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  font-size: 12px;
  color: var(--text-secondary);
}
.agent-item-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
}
.agent-item-title a {
  color: var(--text-primary);
  transition: color 0.2s;
}
.agent-item-title a:hover { color: var(--primary-light); }
.agent-item-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============== 标签 chip (详情页用) ============== */
.tag-chip {
  display: inline-block;
  padding: 2px 10px;
  margin: 0 4px;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--tag-color);
  border: 1px solid var(--tag-border);
  font-size: 12px;
}

/* ============== 分页 ============== */
.agent-pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 36px;
}
.agent-pagination button {
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
}
.agent-pagination button:hover:not(:disabled) {
  background: var(--bg-card-hover);
  border-color: var(--primary);
}
.agent-pagination button.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.agent-pagination button:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* ============== 详情页 ============== */
.agent-detail { padding-top: 40px; }
.agent-detail .agent-loading,
.agent-detail .agent-error {
  text-align: center;
  color: var(--text-secondary);
  padding: 60px 20px;
  font-size: 14px;
}
.agent-detail .agent-error {
  color: #f87171;
  background: rgba(248, 113, 113, 0.08);
  border: 1px solid rgba(248, 113, 113, 0.2);
  border-radius: 12px;
}
.agent-detail-back {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: color 0.2s;
}
.agent-detail-back:hover { color: var(--primary-light); }

.agent-detail-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.agent-detail-title {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.agent-detail-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}
.agent-detail-meta .view-count {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.agent-content-body {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-primary);
  word-break: break-word;
}
.agent-content-body h1,
.agent-content-body h2,
.agent-content-body h3,
.agent-content-body h4 {
  margin: 1.4em 0 0.7em;
  font-weight: 700;
  line-height: 1.3;
}
.agent-content-body h1 { font-size: 22px; }
.agent-content-body h2 { font-size: 19px; }
.agent-content-body h3 { font-size: 17px; }
.agent-content-body h4 { font-size: 15px; color: var(--accent-light); }
.agent-content-body p { margin: 0.8em 0; color: #d8d8e0; }
.agent-content-body a {
  color: var(--primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.agent-content-body ul,
.agent-content-body ol {
  margin: 0.8em 0 0.8em 1.5em;
  color: #d8d8e0;
}
.agent-content-body li { margin: 0.3em 0; }
.agent-content-body blockquote {
  border-left: 3px solid var(--primary);
  background: rgba(99, 102, 241, 0.06);
  padding: 10px 16px;
  margin: 1em 0;
  border-radius: 0 6px 6px 0;
  color: #c0c0d0;
  font-style: italic;
}
.agent-content-body code {
  background: rgba(255, 255, 255, 0.08);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88em;
  color: #ffb3d9;
}
.agent-content-body pre {
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  overflow-x: auto;
  margin: 1em 0;
  line-height: 1.55;
}
.agent-content-body pre code {
  background: transparent;
  padding: 0;
  font-size: 0.88em;
  color: #e6edf3;
}
.agent-content-body img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1em 0;
}
.agent-content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1em 0;
}
.agent-content-body th,
.agent-content-body td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}
.agent-content-body th {
  background: rgba(255, 255, 255, 0.04);
  font-weight: 600;
}
.agent-content-body hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2em 0;
}

/* 评论占位（评论接口未上，保留位置 + 提示） */
.agent-comments-placeholder {
  margin-top: 48px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px dashed var(--border-light);
  border-radius: 12px;
  text-align: center;
  color: var(--text-secondary);
  font-size: 13px;
}

/* ============== 响应式: 320 / 768 / 1280 ============== */
@media (max-width: 767px) {
  .site-nav-inner { padding: 12px 16px; flex-wrap: wrap; gap: 8px; }
  .site-nav-links { gap: 4px; }
  .site-nav-links a { padding: 6px 10px; font-size: 13px; }
  .agent-page, .agent-detail { padding: 20px 14px 60px; }
  .agent-page-header h1 { font-size: 22px; }
  .agent-detail-title { font-size: 20px; }
  .agent-content-body { font-size: 14px; }
  .agent-item { padding: 16px; }
  .agent-item-title { font-size: 15px; }
  /* 移动端不显示 logo text */
  .site-nav-logo-text { display: none; }
}
@media (min-width: 768px) and (max-width: 1279px) {
  .site-nav-inner { padding: 14px 28px; }
}
@media (min-width: 1280px) {
  .agent-page, .agent-detail { padding: 40px 32px 100px; }
  .agent-detail-title { font-size: 30px; }
  .agent-page-header h1 { font-size: 32px; }
}