/* ============ DemoHub 演示站合集 · 公共样式 ============ */
:root {
  --bg: #F3F5F7;
  --surface: #FFFFFF;
  --ink: #1B2430;
  --muted: #66727F;
  --line: #E4E9EF;
  --accent: #1F6FEB;
  --accent-soft: #EAF2FE;
  --ok: #179A6C;
  --bad: #D2483F;
  --unknown: #8A94A3;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(27, 36, 48, .08), 0 6px 18px rgba(27, 36, 48, .06);
  --nav-h: 60px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink);
  background-color: var(--bg);
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  min-height: 100vh;
}

body.has-bg::before {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(243, 245, 247, .86);
  z-index: 0;
}

body > * { position: relative; z-index: 1; }

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

button { font-family: inherit; }

/* ---------- 顶部导航 ---------- */
.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: var(--nav-h);
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: .5px;
  white-space: nowrap;
}
.brand:hover { text-decoration: none; }
.brand .brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  margin-right: 8px;
}

.nav-links { display: flex; gap: 4px; }
.nav-links a {
  color: var(--ink);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 15px;
}
.nav-links a:hover { background: var(--accent-soft); text-decoration: none; color: var(--accent); }

.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.search-box { position: relative; }
.search-box input {
  width: 200px;
  height: 38px;
  padding: 0 12px 0 36px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  font-size: 14px;
  color: var(--ink);
  outline: none;
}
.search-box input:focus { border-color: var(--accent); background: #fff; }
.search-box svg {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  stroke: var(--muted);
}

.cat-dropdown { position: relative; }
.cat-btn {
  height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.cat-btn:hover { border-color: var(--accent); color: var(--accent); }
.cat-btn svg { width: 14px; height: 14px; }

.cat-menu {
  position: absolute;
  right: 0;
  top: 46px;
  min-width: 160px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 6px;
  display: none;
  z-index: 60;
}
.cat-menu.open { display: block; }
.cat-menu button {
  display: block;
  width: 100%;
  text-align: left;
  border: 0;
  background: none;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
}
.cat-menu button:hover { background: var(--accent-soft); color: var(--accent); }
.cat-menu button.active { color: var(--accent); font-weight: 600; }

/* ---------- 主体 ---------- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 22px 20px 60px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 14px;
}
.toolbar .stat { display: inline-flex; align-items: baseline; gap: 6px; }
.toolbar .stat b { color: var(--ink); font-size: 16px; font-variant-numeric: tabular-nums; }
.toolbar .spacer { flex: 1; }

.per-page { display: inline-flex; align-items: center; gap: 8px; }
.per-page select {
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 0 8px;
  font-size: 14px;
  color: var(--ink);
}

/* ---------- 卡片网格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (min-width: 700px) { .grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .grid { grid-template-columns: repeat(4, 1fr); } }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  cursor: pointer;
  transition: box-shadow .18s ease, transform .18s ease, border-color .18s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.card:hover {
  box-shadow: var(--shadow);
  border-color: #CFDCEF;
  transform: translateY(-2px);
}

.card-head { display: flex; align-items: center; gap: 12px; min-width: 0; }

.thumb {
  flex: 0 0 52px;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  overflow: hidden;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; }

.card-title {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  min-width: 0;
}
.card-meta .site-url {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.ok { color: var(--ok); background: #E7F5EF; }
.badge.bad { color: var(--bad); background: #FBECEB; }
.badge.unknown { color: var(--unknown); background: #EEF1F4; }

.card-foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--muted);
}
.card-cat {
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--bg);
}

.empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 70px 20px;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- 分页 ---------- */
.pager {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.pager button {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 9px;
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
}
.pager button:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.pager button.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.pager button:disabled { opacity: .4; cursor: not-allowed; }
.pager .page-info { font-size: 13px; color: var(--muted); margin: 0 8px; }

/* ---------- 侧边轨道 / 悬浮按钮 ---------- */
.side-rail {
  position: fixed;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 40;
}
.side-rail button {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  color: var(--ink);
}
.side-rail button:hover { color: var(--accent); border-color: var(--accent); }
.side-rail svg { width: 18px; height: 18px; }

.fab {
  position: fixed;
  right: 18px;
  bottom: 26px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 0;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(31, 111, 235, .35);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 40;
}
.fab:hover { background: #185BC7; }
.fab svg { width: 22px; height: 22px; }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(20, 27, 36, .5);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 100;
}
.modal-mask.open { display: flex; }

.modal {
  background: #fff;
  border-radius: 18px;
  width: 100%;
  max-width: 560px;
  max-height: 86vh;
  overflow: auto;
  box-shadow: 0 20px 60px rgba(20, 27, 36, .25);
  position: relative;
  animation: pop .18s ease;
}
@keyframes pop {
  from { opacity: 0; transform: translateY(12px) scale(.98); }
  to { opacity: 1; transform: none; }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 34px;
  height: 34px;
  border: 0;
  background: var(--bg);
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  z-index: 2;
}
.modal-close:hover { background: var(--line); color: var(--ink); }
.modal-close svg { width: 16px; height: 16px; }

.modal-body { padding: 28px 28px 24px; }

.detail-title {
  font-size: 20px;
  font-weight: 700;
  margin: 0 40px 12px 0;
  line-height: 1.4;
}

.detail-row {
  display: flex;
  gap: 12px;
  padding: 11px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
}
.detail-row .label {
  flex: 0 0 92px;
  color: var(--muted);
}
.detail-row .value { flex: 1; min-width: 0; word-break: break-word; }

.feature-list { margin: 0; padding-left: 18px; }
.feature-list li { margin: 4px 0; }

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 40px;
  padding: 0 18px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #185BC7; }
.btn-ghost { background: #fff; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.article-content { font-size: 15px; line-height: 1.9; color: var(--ink); white-space: pre-wrap; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, .8);
  padding: 28px 20px 34px;
  margin-top: 40px;
}
.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.footer-links { display: flex; flex-wrap: wrap; gap: 22px; font-size: 14px; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--accent); }
.footer-copy { font-size: 13px; color: var(--muted); }
.footer-disclaimer {
  font-size: 12px;
  color: var(--unknown);
  text-align: center;
  max-width: 640px;
  line-height: 1.8;
}

/* ---------- 后台通用 ---------- */
.admin-wrap { max-width: 1100px; margin: 0 auto; padding: 24px 20px 80px; }
.admin-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}
.admin-head h1 { font-size: 22px; margin: 0; }
.admin-head .spacer { flex: 1; }

.admin-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 6px;
}
.admin-tabs button {
  border: 0;
  background: none;
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
}
.admin-tabs button.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  margin-bottom: 20px;
}
.panel h2 { font-size: 16px; margin: 0 0 16px; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 720px) { .form-grid.two { grid-template-columns: 1fr 1fr; } }

.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.field input, .field textarea, .field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--ink);
  outline: none;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent); }
.field textarea { min-height: 90px; resize: vertical; }

.tool-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 16px; }

.admin-table { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: 14px; }
.admin-table th, .admin-table td {
  border-bottom: 1px solid var(--line);
  padding: 11px 10px;
  text-align: left;
  word-break: break-word;
}
.admin-table th { color: var(--muted); font-weight: 600; font-size: 13px; }
.admin-table .actions { display: flex; gap: 8px; }
.link-btn {
  border: 0;
  background: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 13px;
  padding: 0;
}
.link-btn.danger { color: var(--bad); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 40px;
  transform: translateX(-50%);
  background: var(--ink);
  color: #fff;
  padding: 11px 18px;
  border-radius: 10px;
  font-size: 14px;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease;
}
.toast.show { opacity: 1; }

.login-box {
  max-width: 380px;
  margin: 10vh auto 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 30px;
}
.login-box h1 { font-size: 20px; margin: 0 0 20px; }

/* ---------- 响应式 ---------- */
@media (max-width: 720px) {
  .nav-inner { flex-wrap: wrap; height: auto; padding: 10px 16px; gap: 10px; }
  .nav-right { width: 100%; margin-left: 0; }
  .search-box { flex: 1; }
  .search-box input { width: 100%; }
  .grid { gap: 12px; }
  .side-rail { right: 10px; }
  .fab { right: 14px; bottom: 20px; }
}