/* ============================================
   DMA 合集导航站 —— PUBG 亮色战术风
   字体：Orbitron（标题战术）+ Noto Sans SC（中文）+ Inter（英文）
   ============================================ */

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

:root {
  /* === 配色：PUBG 亮色系 === */
  --bg: #f5f6f0;              /* 沙白背景 */
  --bg-card: #ffffff;
  --bg-sidebar: #ffffff;
  --border: #e2e4da;
  --border-hover: #c4c7bb;
  --text: #1a1d24;
  --text-secondary: #5a5f6a;
  --text-muted: #8a8f99;
  --primary: #d4a017;         /* 琥珀金 —— PUBG 主色 */
  --primary-hover: #b8860b;
  --primary-light: #fef9e7;
  --accent-green: #5b8c5a;    /* 军绿分割 */
  --accent-orange: #ff6b35;   /* 战术橙强调 */
  --accent-blue: #4a90d9;     /* 冰蓝 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
  --shadow-md: 0 6px 20px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 36px rgba(212,160,23,.18);
  --radius: 10px;
  --radius-sm: 6px;
  --sidebar-w: 220px;
}

body.nav-body {
  font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont,
               'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv02","cv03","cv04","cv11";
}

/* 战术标题字体 */
.tactical-title,
.pane-header h2,
.group-header h3,
.logo-text h1,
.nf-code {
  font-family: 'Orbitron', 'Noto Sans SC', sans-serif;
  letter-spacing: 0.3px;
}

/* 等宽数字/代码 */
code, .card-count-numeric, .stat-num {
  font-family: 'JetBrains Mono', 'Consolas', monospace;
  font-feature-settings: "tnum";
}

/* ---------- Header ---------- */
.nav-header {
  background: #fff;
  border-bottom: 2px solid var(--accent-green);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.nav-header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-icon {
  font-size: 30px;
  filter: drop-shadow(0 2px 4px rgba(91,140,90,.3));
}
.logo-text h1 {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, #1a1d24 0%, #d4a017 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.logo-sub {
  font-size: 12px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

/* ---------- Layout ---------- */
.nav-main {
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 24px;
}
.nav-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  gap: 20px;
  align-items: start;
}

/* ---------- Sidebar ---------- */
.nav-sidebar {
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 10px;
  position: sticky;
  top: 72px;
  height: calc(100vh - 92px);
  overflow-y: auto;
  transition: width .2s ease, padding .2s ease;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}
.nav-sidebar.collapsed {
  width: 48px;
  padding: 16px 6px;
}
.sidebar-title {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-green);
  letter-spacing: 2px;
  text-transform: uppercase;
  font-family: 'Orbitron', sans-serif;
}
.nav-sidebar.collapsed .sidebar-title span { display: none; }
.sidebar-collapse-btn {
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 12px;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: background .15s, color .15s;
}
.sidebar-collapse-btn:hover { background: var(--primary-light); color: var(--primary); }

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 2px;
}
.nav-cat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  transition: background .18s, color .18s, transform .14s, box-shadow .18s, border-color .18s;
  white-space: nowrap;
  overflow: hidden;
  border: 1px solid transparent;
}
.nav-cat-item:hover {
  background: var(--bg);
  border-color: var(--border);
  transform: translateX(3px);
}
.nav-cat-item.active {
  background: var(--primary-light);
  color: var(--primary-hover);
  font-weight: 600;
  border-color: rgba(212,160,23,.35);
  box-shadow: inset 3px 0 0 var(--primary);
}
.cat-icon { font-size: 16px; flex-shrink: 0; }
.cat-name { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.cat-count {
  font-size: 11px;
  color: var(--text-muted);
  background: var(--bg);
  padding: 1px 7px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}
.nav-cat-item.active .cat-count {
  background: #fff;
  color: var(--primary);
  font-weight: 600;
}
.nav-sidebar.collapsed .cat-name,
.nav-sidebar.collapsed .cat-count { display: none; }

/* ---------- Content ---------- */
.nav-content {
  flex: 1;
  overflow: hidden;
  position: relative;
}
.content-pane {
  display: none;
  animation: paneFade .3s ease;
}
.content-pane.active { display: block; }
@keyframes paneFade {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 首页（汇总视图入口）特殊样式 —— 战术琥珀金渐变 */
.nav-cat-item.nav-cat-home {
  background: linear-gradient(135deg, #d4a017 0%, #e8c547 100%) !important;
  color: #fff !important;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(212,160,23,.35);
}
.nav-cat-item.nav-cat-home:hover { background: linear-gradient(135deg, #b8860b 0%, #d4a017 100%) !important; transform: translateX(3px); }
.nav-cat-item.nav-cat-home.active {
  background: linear-gradient(135deg, #8b6914 0%, #d4a017 100%) !important;
  box-shadow: 0 3px 14px rgba(212,160,23,.45);
}
.nav-cat-item.nav-cat-home .cat-count {
  background: rgba(255,255,255,.3) !important;
  color: #fff !important;
}
.nav-cat-item.nav-cat-home.active .cat-count {
  background: rgba(255,255,255,.45) !important;
  color: #fff !important;
}

.pane-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--accent-green);
}

/* ---------- 分组区块（汇总视图） ---------- */
.group-section {
  margin-bottom: 40px;
  padding-bottom: 8px;
}
.group-section:last-child { margin-bottom: 0; }
.group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding: 12px 16px;
  background: linear-gradient(135deg, #ffffff 0%, #fef9e7 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-sm);
}
.group-header h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
}
.group-icon { font-size: 18px; }
.group-count {
  font-size: 12px;
  font-weight: 500;
  color: var(--primary-hover);
  background: var(--primary-light);
  padding: 2px 10px;
  border-radius: 10px;
  margin-left: 4px;
  font-family: 'JetBrains Mono', monospace;
}
.group-jump {
  font-size: 12px;
  color: var(--accent-blue);
  text-decoration: none;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: background .18s, color .18s;
}
.group-jump:hover {
  background: var(--accent-blue);
  color: #fff;
}
.pane-header h2 {
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}
.pane-icon { font-size: 24px; }
.pane-count {
  font-size: 13px;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
}

/* ---------- Card Grid ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}
.nav-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  text-decoration: none;
  color: var(--text);
  transition: transform .2s cubic-bezier(.4,0,.2,1), box-shadow .2s, border-color .2s, background .2s;
  position: relative;
  overflow: hidden;
}
.nav-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 0;
  background: linear-gradient(180deg, var(--primary), var(--accent-orange));
  transition: height .25s ease;
}
.nav-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  background: linear-gradient(135deg, #ffffff 0%, #fef9e7 100%);
}
.nav-card:hover::before { height: 100%; }

.card-emoji {
  font-size: 24px;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
  filter: saturate(1.1);
}
.card-body { flex: 1; min-width: 0; }
.card-title {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.45;
  word-break: break-all;
  white-space: normal;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: var(--text);
  transition: color .18s;
}
.nav-card:hover .card-title { color: var(--primary-hover); }
.card-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}
.card-arrow {
  color: var(--text-muted);
  font-size: 16px;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity .18s, transform .22s cubic-bezier(.4,0,.2,1), color .18s;
  margin-top: 2px;
}
.nav-card:hover .card-arrow {
  opacity: 1;
  transform: translateX(3px);
  color: var(--primary);
}

/* ---------- Empty / Not Found ---------- */
.empty-state {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-muted);
}
.empty-icon { font-size: 40px; margin-bottom: 12px; }

.not-found {
  text-align: center;
  padding: 80px 20px;
}
.nf-code {
  font-size: 120px;
  font-weight: 900;
  background: linear-gradient(135deg, #d4a017, #ff6b35);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -4px;
}
.nf-msg { font-size: 16px; color: var(--text-secondary); margin-bottom: 24px; }
.nf-btn {
  display: inline-block;
  padding: 10px 28px;
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 1px;
  transition: background .18s, transform .14s, box-shadow .18s;
  box-shadow: 0 2px 8px rgba(212,160,23,.3);
}
.nf-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(212,160,23,.4);
}

/* ---------- Article Page ---------- */
.page-container {
  max-width: 800px;
  margin: 0 auto;
}
.page-breadcrumb {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  display: flex;
  gap: 8px;
  align-items: center;
}
.page-breadcrumb a { color: var(--primary); text-decoration: none; font-weight: 500; }
.page-breadcrumb a:hover { text-decoration: underline; }
.page-article {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 40px;
  box-shadow: var(--shadow-sm);
}
.page-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--primary);
}
.page-content { font-size: 15px; line-height: 1.85; }
.page-content h2 { font-size: 18px; margin: 24px 0 12px; font-weight: 700; font-family: 'Orbitron', sans-serif; color: var(--primary-hover); }
.page-content p { margin-bottom: 12px; color: #333; }
.page-content ul, .page-content ol { padding-left: 24px; margin-bottom: 12px; }
.page-content li { margin-bottom: 4px; }
.page-content a { color: var(--primary); text-decoration: none; font-weight: 500; }
.page-content a:hover { text-decoration: underline; }
.page-content code {
  background: var(--primary-light);
  color: var(--primary-hover);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
}
.page-content blockquote {
  border-left: 4px solid var(--primary);
  padding: 12px 18px;
  background: var(--primary-light);
  color: var(--text-secondary);
  margin: 16px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
}
.page-content img {
  max-width: 100%;     /* 不得超过文章列宽 */
  height: auto;        /* 保持宽高比 */
  width: auto;         /* 覆盖 HTML 里可能写死的 width 属性 */
  display: block;      /* 独占一行 */
  margin: 16px auto;   /* 上下留距 + 水平居中 */
  border-radius: 6px;  /* 轻微圆角 */
  box-shadow: 0 1px 6px rgba(0,0,0,.08);  /* 柔和阴影 */
}
.page-content figure {
  margin: 16px 0;
  text-align: center;
}
.page-content figure img {
  margin: 0 auto 8px;
}
.page-content figcaption {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---------- Footer ---------- */
.nav-footer {
  border-top: 2px solid var(--accent-green);
  padding: 16px 24px;
  margin-top: 20px;
  background: #fff;
}
.nav-footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}
.admin-entry {
  text-decoration: none;
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: all .18s;
}
.admin-entry:hover {
  background: var(--primary-light);
  color: var(--primary);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav-layout {
    grid-template-columns: 1fr;
  }
  .nav-sidebar {
    position: static;
    height: auto;
    max-height: none;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 12px;
    overflow-x: auto;
  }
  .sidebar-title { display: none; }
  .sidebar-collapse-btn { display: none; }
  .sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 6px;
    width: 100%;
  }
  .nav-cat-item {
    background: var(--bg);
    padding: 6px 12px;
    flex-shrink: 0;
  }
  .nav-cat-item.active { background: var(--primary); color: #fff; }
  .nav-cat-item.active .cat-count { background: rgba(255,255,255,.25); color: #fff; }
  .card-grid { grid-template-columns: 1fr; }
  .page-article { padding: 20px; }
}

/* ---------- Scrollbar ---------- */
.nav-sidebar::-webkit-scrollbar { width: 4px; }
.nav-sidebar::-webkit-scrollbar-thumb { background: var(--border-hover); border-radius: 2px; }
.nav-sidebar::-webkit-scrollbar-track { background: transparent; }

/* ---------- Selection ---------- */
::selection {
  background: rgba(212,160,23,.35);
  color: var(--text);
}