:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --border: #e3e8ef;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --green: #059669;
  --orange: #d97706;
  --red: #dc2626;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei",
    "PingFang SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
}

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

/* ---------- 顶栏 ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  background: #111827;
  color: #fff;
  padding: 0 24px;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar .brand { font-size: 16px; font-weight: 600; letter-spacing: .5px; }
.topbar .nav { display: flex; gap: 4px; flex: 1; }
.topbar .nav a {
  color: #d1d5db;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 14px;
}
.topbar .nav a:hover { background: #1f2937; color: #fff; text-decoration: none; }
.topbar .nav a.active { background: var(--primary); color: #fff; }
.topbar .user { color: #9ca3af; font-size: 13px; }
.topbar .user a { color: #9ca3af; }

.container { max-width: 1440px; margin: 0 auto; padding: 20px 24px 48px; }

/* ---------- 通用组件 ---------- */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}
.panel h2 { margin: 0 0 16px; font-size: 16px; font-weight: 600; }
.panel h2 .sub { font-weight: 400; color: var(--muted); font-size: 13px; margin-left: 8px; }

.page-head { display: flex; align-items: baseline; gap: 12px; margin: 0 0 16px; }
.page-head h1 { font-size: 20px; margin: 0; }
.page-head .desc { color: var(--muted); font-size: 13px; }

.flash {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
  padding: 10px 14px;
  border-radius: var(--radius);
  margin-bottom: 16px;
}
.error-box {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
  padding: 10px 14px;
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.btn {
  display: inline-block;
  border: 1px solid transparent;
  background: var(--primary);
  color: #fff;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
}
.btn:hover { background: var(--primary-dark); }
.btn.secondary { background: #fff; color: var(--text); border-color: var(--border); }
.btn.secondary:hover { background: #f9fafb; }
.btn.danger { background: var(--red); }
.btn.danger:hover { background: #b91c1c; }
.btn.danger-outline { background: #fff; color: var(--red); border-color: #fca5a5; }
.btn.danger-outline:hover { background: #fef2f2; }
.btn.sm { padding: 2px 9px; font-size: 12px; line-height: 16px; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* ---------- 表单 ---------- */
.field { margin-bottom: 14px; }
.field label { display: block; font-weight: 500; margin-bottom: 6px; font-size: 13px; }
.field .hint { color: var(--muted); font-size: 12px; font-weight: 400; }
input[type=text], input[type=password], input[type=number], input[type=date], select, textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
textarea { resize: vertical; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0 16px; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 5px 10px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { background: #f9fafb; font-weight: 600; color: #374151; white-space: nowrap; }
tbody tr:hover { background: #f9fafb; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.url-cell {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 12px;
  color: #374151;
  max-width: 460px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.empty { padding: 40px; text-align: center; color: var(--muted); }

/* ---------- 统计卡片 ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 20px; }
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.stat .label { color: var(--muted); font-size: 13px; }
.stat .value { font-size: 28px; font-weight: 600; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat .value.blue { color: var(--primary); }
.stat .value.green { color: var(--green); }
.stat .value.orange { color: var(--orange); }

.tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 12px;
  white-space: nowrap;
}
.tag.unused { background: #eff6ff; color: #1d4ed8; }
.tag.picked { background: #ecfdf5; color: #047857; }

/* ---------- 分页 ---------- */
.pager { display: flex; align-items: center; gap: 8px; margin-top: 16px; flex-wrap: wrap; }
.pager a, .pager span {
  padding: 5px 11px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  font-size: 13px;
}
.pager .current { background: var(--primary); color: #fff; border-color: var(--primary); }
.pager .gap { border: none; background: none; }

.filter-bar { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; align-items: end; }
.filter-bar .actions { display: flex; gap: 8px; }

/* ---------- 后台管理子标签 ---------- */
.subtabs { display: flex; gap: 6px; margin-bottom: 18px; flex-wrap: wrap; }
.subtabs a {
  padding: 7px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  font-size: 14px;
}
.subtabs a:hover { background: #f9fafb; text-decoration: none; }
.subtabs a.active { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ---------- 多选清单 ---------- */
.checklist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fafbfc;
}
.check-item { display: flex; align-items: center; gap: 6px; font-size: 14px; cursor: pointer; }
.check-item input { width: auto; margin: 0; }

/* ---------- 警示框 ---------- */
.warn-box {
  border: 1px solid #fcd34d;
  background: #fffbeb;
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 16px;
}
.warn-box .title { font-weight: 600; color: #92400e; margin-bottom: 6px; }
.warn-box p { margin: 0 0 6px; color: #92400e; font-size: 14px; }

.tag.warn { background: #fef3c7; color: #92400e; }
.tag.off { background: #f3f4f6; color: #6b7280; }
.tag.admin { background: #ede9fe; color: #5b21b6; }
.tag.cat { background: #eef2ff; color: #3730a3; margin-right: 4px; }

.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.toolbar .info { color: var(--muted); font-size: 13px; }
.toolbar .info b { color: var(--text); }

.danger-zone {
  border: 1px solid #fecaca;
  background: #fff7f7;
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-top: 16px;
}
.danger-zone .title { font-weight: 600; color: #991b1b; margin-bottom: 4px; }
.danger-zone .desc { color: #b91c1c; font-size: 13px; margin-bottom: 10px; }
.danger-zone .btns { display: flex; gap: 10px; flex-wrap: wrap; }
.danger-zone form { display: inline; }

/* ---------- 登录页 ---------- */
.login-screen {
  min-height: 100vh;
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(360px, .7fr);
  overflow: hidden;
  background: #08151c;
  color: #eaf6f5;
}
.login-canvas { position: absolute; inset: 0; pointer-events: none; }
.login-canvas { z-index: -2; }
.login-intro {
  align-self: center;
  max-width: 620px;
  padding: 56px clamp(36px, 9vw, 148px);
  animation: login-enter .7s ease-out both;
}
.login-mark { width: 48px; height: 48px; display: flex; align-items: center; gap: 5px; margin-bottom: 48px; }
.login-mark span { width: 12px; height: 12px; border: 2px solid #8bdbd1; transform: rotate(45deg); }
.login-mark span:nth-child(2) { border-color: #f3ca72; }
.login-mark span:nth-child(3) { border-color: #7da8df; }
.login-kicker { margin: 0 0 12px; color: #88bebb; font-size: 12px; font-weight: 700; letter-spacing: 1.5px; }
.login-intro h1 { max-width: 480px; margin: 0; color: #f6fbfa; font-size: clamp(34px, 4vw, 58px); line-height: 1.16; font-weight: 650; letter-spacing: 0; }
.login-lede { max-width: 410px; margin: 22px 0 34px; color: #a8c2c3; font-size: 16px; line-height: 1.85; }
.login-status { display: inline-flex; align-items: center; gap: 9px; color: #b4d7d3; font-size: 13px; }
.login-status i { width: 7px; height: 7px; border-radius: 50%; background: #6ed4a7; box-shadow: 0 0 0 5px rgba(110, 212, 167, .12); }
.login-panel {
  align-self: center;
  width: min(100% - 48px, 420px);
  justify-self: center;
  padding: 42px;
  border: 1px solid rgba(167, 221, 215, .23);
  border-radius: 8px;
  background: rgba(9, 28, 36, .84);
  box-shadow: 0 24px 64px rgba(0, 0, 0, .28);
  backdrop-filter: blur(14px);
  animation: login-enter .7s .12s ease-out both;
}
.login-panel-head { margin-bottom: 30px; }
.login-panel-head p { margin: 0 0 5px; color: #89b7b4; font-size: 13px; }
.login-panel-head h2 { margin: 0; color: #f4fbfa; font-size: 26px; font-weight: 600; }
.login-panel .field { margin-bottom: 20px; }
.login-panel .field label { color: #c4d8d7; font-weight: 500; }
.login-panel input[type=text], .login-panel input[type=password] { height: 44px; border-color: rgba(161, 211, 206, .28); background: rgba(4, 17, 23, .72); color: #f3fbfa; }
.login-panel input[type=text]:focus, .login-panel input[type=password]:focus { border-color: #70c8c0; box-shadow: 0 0 0 3px rgba(112, 200, 192, .13); }
.login-panel .error-box { border-color: rgba(251, 146, 146, .55); background: rgba(127, 29, 29, .32); color: #fecaca; }
.login-submit { width: 100%; min-height: 44px; margin-top: 8px; border-color: #59b9b0; background: #4daea6; color: #06191e; font-weight: 700; }
.login-submit:hover { background: #74c9c0; }
@keyframes login-enter { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- 独立管理后台 ---------- */
.admin-body { background: #f5f7fa; }
.admin-topbar { height: 58px; display: flex; align-items: center; gap: 26px; padding: 0 28px; background: #17212b; color: #dbe5e9; }
.admin-brand { color: #fff; font-size: 16px; font-weight: 650; white-space: nowrap; }
.admin-brand:hover { color: #fff; text-decoration: none; }
.admin-brand span { margin-left: 9px; padding-left: 9px; border-left: 1px solid #59707a; color: #a5bdc4; font-size: 12px; font-weight: 400; }
.admin-nav { display: flex; align-self: stretch; gap: 4px; }
.admin-nav a { display: flex; align-items: center; padding: 0 13px; color: #aec1c8; }
.admin-nav a:hover, .admin-nav a.active { background: #263741; color: #fff; text-decoration: none; }
.admin-tools { display: flex; align-items: center; gap: 14px; margin-left: auto; color: #a7bbc2; font-size: 13px; }
.admin-tools a { color: #b8d0d6; }
.admin-container { max-width: 1440px; margin: 0 auto; padding: 26px 28px 48px; }
.admin-login-body { min-height: 100vh; background: #14212a; }
.admin-login-wrap { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(360px, .85fr); align-items: center; max-width: 1160px; margin: 0 auto; padding: 40px; }
.admin-login-copy { padding: 40px 80px 40px 24px; color: #eaf2f2; }
.admin-login-copy p, .admin-login-eyebrow { margin: 0 0 12px; color: #75b9b0; font-size: 12px; font-weight: 700; letter-spacing: 1.4px; }
.admin-login-copy h1 { margin: 0 0 16px; font-size: 42px; line-height: 1.2; }
.admin-login-copy span { color: #afc3c8; font-size: 15px; }
.admin-login-card { padding: 38px; border: 1px solid #4a616b; border-radius: 8px; background: #fff; color: #1d2932; }
.admin-login-card h2 { margin: 0 0 28px; font-size: 24px; }
.admin-login-card .field { margin-bottom: 20px; }
.admin-login-card .error-box { margin-top: -8px; }
.admin-login-submit { width: 100%; min-height: 44px; margin-top: 6px; background: #25736d; }
.admin-login-submit:hover { background: #1e5f5a; }
.admin-login-back { display: block; margin-top: 20px; color: #5b6c74; font-size: 13px; text-align: center; }

.copy-box {
  width: 100%;
  min-height: 220px;
  font-family: "SFMono-Regular", Consolas, Menlo, monospace;
  font-size: 12px;
  line-height: 1.5;
  word-break: break-all;
}

@media (max-width: 1100px) {
  .filter-bar { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .topbar { height: auto; flex-wrap: wrap; padding: 10px 14px; gap: 10px; }
  .topbar .nav { flex-wrap: wrap; }
  .container { padding: 14px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .filter-bar { grid-template-columns: 1fr 1fr; }
  .login-screen { display: block; padding: 36px 0; }
  .login-intro { padding: 0 28px 42px; }
  .login-mark { margin-bottom: 28px; }
  .login-intro h1 { font-size: 34px; }
  .login-lede { margin: 14px 0 22px; font-size: 14px; }
  .login-panel { width: calc(100% - 40px); padding: 30px 24px; }
  .admin-topbar { height: auto; min-height: 58px; flex-wrap: wrap; gap: 8px 16px; padding: 10px 16px; }
  .admin-nav { order: 3; width: 100%; height: 34px; overflow-x: auto; }
  .admin-nav a { padding: 0 10px; white-space: nowrap; }
  .admin-tools { margin-left: auto; gap: 9px; }
  .admin-tools span { display: none; }
  .admin-container { padding: 18px 14px 38px; }
  .admin-login-wrap { display: block; padding: 44px 20px; }
  .admin-login-copy { padding: 0 8px 38px; }
  .admin-login-copy h1 { font-size: 32px; }
  .admin-login-card { padding: 28px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  .login-intro, .login-panel { animation: none; }
}