:root {
  --bg: #f4f6fa;
  --panel: #ffffff;
  --border: #e4e8f0;
  --border-2: #eef1f6;
  --text: #1d2433;
  --text-2: #5b6577;
  --text-3: #8b95a7;
  --primary: #2f6bff;
  --primary-weak: #eaf0ff;
  --ok: #12a86a;
  --ok-weak: #e7f7ef;
  --warn: #e08c1a;
  --warn-weak: #fdf3e2;
  --danger: #e0483d;
  --danger-weak: #fdecea;
  --shadow: 0 1px 2px rgba(20, 30, 60, .05), 0 8px 24px rgba(20, 30, 60, .06);
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.55 "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 24px;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #2f6bff, #6a4bff);
  color: #fff; font-weight: 800; font-size: 15px;
  display: grid; place-items: center;
  letter-spacing: .5px;
}
.brand-text { display: flex; flex-direction: column; }
.brand-text strong { font-size: 16px; letter-spacing: .3px; }
.brand-text small { color: var(--text-3); font-size: 12px; }
.top-right { display: flex; align-items: center; gap: 10px; }

.conn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 600;
  background: var(--border-2); color: var(--text-2);
}
.conn i { width: 8px; height: 8px; border-radius: 50%; background: var(--text-3); }
.conn-on { background: var(--ok-weak); color: var(--ok); }
.conn-on i { background: var(--ok); box-shadow: 0 0 0 3px rgba(18,168,106,.15); }
.conn-off { background: var(--border-2); color: var(--text-2); }
.conn-err { background: var(--danger-weak); color: var(--danger); }
.conn-err i { background: var(--danger); }
.conn-load i { background: var(--warn); animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: .25; } }

/* ---------- 按钮 ---------- */
.btn {
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  transition: .15s;
  font-family: inherit;
}
.btn:hover { border-color: #c9d2e3; background: #fafbfe; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: #2559db; border-color: #2559db; }
.btn.sm { padding: 5px 10px; font-size: 12px; }
.btn.danger { color: var(--danger); border-color: #f3cfcb; }
.btn.danger:hover { background: var(--danger-weak); }
.btn b {
  display: inline-block; margin-left: 4px; padding: 0 6px;
  background: var(--primary-weak); color: var(--primary);
  border-radius: 999px; font-size: 11px;
}

/* ---------- 布局 ---------- */
.wrap { max-width: 1440px; margin: 0 auto; padding: 20px 24px 48px; }

.toolbar {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 14px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow);
}
.field { display: flex; flex-direction: column; gap: 6px; }
.field.grow { flex: 1 1 260px; min-width: 220px; }
.field.grow-2 { flex: 1 1 200px; min-width: 180px; }
.field.btns { flex-direction: row; gap: 8px; align-items: center; }
.field label { font-size: 12px; color: var(--text-2); font-weight: 600; }
.inline { display: flex; align-items: center; gap: 10px; }

select, input[type=text], input[type=number], input[type=password] {
  height: 36px; padding: 0 10px;
  border: 1px solid var(--border); border-radius: 8px;
  background: #fff; color: var(--text); font-size: 13px;
  font-family: inherit; outline: none; width: 100%;
}
select:focus, input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(47,107,255,.12); }
.field.btns select { width: 100px; }

.switch { position: relative; display: inline-block; width: 40px; height: 22px; flex: none; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch span {
  position: absolute; inset: 0; cursor: pointer;
  background: #d3d9e6; border-radius: 999px; transition: .2s;
}
.switch span::before {
  content: ''; position: absolute; width: 18px; height: 18px;
  left: 2px; top: 2px; background: #fff; border-radius: 50%; transition: .2s;
}
.switch input:checked + span { background: var(--primary); }
.switch input:checked + span::before { transform: translateX(18px); }

/* ---------- 提示 ---------- */
.alert {
  margin-top: 14px; padding: 12px 16px; border-radius: 10px;
  background: var(--danger-weak); color: #a3342c; border: 1px solid #f5d3cf;
  font-size: 13px; white-space: pre-wrap;
}
.alert.info { background: var(--primary-weak); color: #1a45ad; border-color: #ccdaff; }
.hidden { display: none !important; }

/* ---------- 卡片 ---------- */
.cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 12px; margin-top: 16px;
}
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; gap: 4px;
}
.card span { font-size: 12px; color: var(--text-3); }
.card b { font-size: 24px; font-weight: 700; letter-spacing: .5px; }
.card.ok b { color: var(--ok); }
.card.warn b { color: var(--warn); }

/* ---------- 面板 ---------- */
.panel {
  margin-top: 16px; background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--border-2);
}
.panel-head h2 { margin: 0; font-size: 15px; font-weight: 700; }
.panel-head h2 small { font-weight: 500; color: var(--text-3); font-size: 12px; margin-left: 8px; }
.updated { font-size: 12px; color: var(--text-3); display: flex; align-items: center; gap: 6px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: #cbd3e2; display: inline-block; }
.dot.on { background: var(--ok); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }

/* ---------- 表格 ---------- */
.table-scroll { overflow: auto; max-height: 62vh; }
.table-scroll.short { max-height: 320px; }
.table-scroll.mid { max-height: 380px; }

table.grid { width: 100%; border-collapse: collapse; font-size: 13px; }
table.grid th {
  position: sticky; top: 0; z-index: 2;
  background: #fafbfe; color: var(--text-2);
  text-align: left; font-weight: 600; font-size: 12px;
  padding: 10px 14px; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.grid th.sortable { cursor: pointer; user-select: none; }
table.grid th.sortable:hover { color: var(--primary); }
table.grid th .arrow { color: var(--primary); margin-left: 3px; }
table.grid td { padding: 9px 14px; border-bottom: 1px solid var(--border-2); }
table.grid tbody tr:hover td { background: #fafbfe; }
table.grid.compact td, table.grid.compact th { padding: 7px 12px; }
td.empty { text-align: center; color: var(--text-3); padding: 32px 0; }
td.num { font-variant-numeric: tabular-nums; }
td.sid { font-weight: 600; color: var(--text-2); font-variant-numeric: tabular-nums; }
td.name { font-weight: 600; }
td.score { font-weight: 700; font-variant-numeric: tabular-nums; }
.score-high { color: var(--ok); }
.score-mid { color: var(--warn); }
.score-low { color: var(--danger); }
.diff { animation: flash 1.6s ease-out; }
@keyframes flash { from { background: #fff6d9; } to { background: transparent; } }

.tag {
  display: inline-block; padding: 1px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 600;
}
.tag-ok { background: var(--ok-weak); color: var(--ok); }
.tag-warn { background: var(--warn-weak); color: var(--warn); }
.tag-gray { background: var(--border-2); color: var(--text-3); }

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(20, 28, 48, .45);
  display: none; align-items: center; justify-content: center;
  padding: 24px; backdrop-filter: blur(2px);
}
.modal.open { display: flex; }
.modal-box {
  background: #fff; border-radius: 14px; width: 640px; max-width: 100%;
  max-height: 90vh; display: flex; flex-direction: column;
  box-shadow: 0 24px 64px rgba(15, 23, 42, .28);
}
.modal-box.wide { width: 820px; }
.modal-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.modal-head h3 { margin: 0; font-size: 15px; }
.x { border: 0; background: none; font-size: 22px; line-height: 1; cursor: pointer; color: var(--text-3); }
.x:hover { color: var(--text); }
.modal-body { padding: 18px; overflow: auto; }
.modal-foot {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 18px; border-top: 1px solid var(--border); background: #fbfcfe;
  border-radius: 0 0 14px 14px;
}
.spacer { flex: 1; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.fi { display: flex; flex-direction: column; gap: 6px; }
.fi.full { grid-column: 1 / -1; }
.fi label { font-size: 12px; font-weight: 600; color: var(--text-2); }
.hint { margin: 0; font-size: 11px; color: var(--text-3); }
.fi.checks { flex-direction: row; flex-wrap: wrap; gap: 18px; }
.fi.checks label { display: flex; align-items: center; gap: 6px; font-weight: 500; font-size: 13px; color: var(--text); }
.ping-result {
  margin-top: 14px; padding: 10px 12px; border-radius: 8px;
  font-size: 12px; white-space: pre-wrap;
  background: var(--ok-weak); color: #0d7a4d; border: 1px solid #c8ecda;
}
.ping-result.err { background: var(--danger-weak); color: #a3342c; border-color: #f5d3cf; }

/* ---------- 名单 ---------- */
.upload-zone {
  border: 2px dashed #cfd8ea; border-radius: 10px; padding: 22px;
  text-align: center; cursor: pointer; transition: .15s; background: #fbfcfe;
}
.upload-zone:hover, .upload-zone.over { border-color: var(--primary); background: var(--primary-weak); }
.uz-inner { display: flex; flex-direction: column; gap: 4px; }
.uz-inner strong { font-size: 13px; }
.uz-inner span { font-size: 12px; color: var(--text-3); }
.roster-bar {
  display: flex; align-items: center; gap: 10px; margin: 14px 0 10px; flex-wrap: wrap;
}
.roster-bar input[type=text] { width: 180px; }
.chk { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; color: var(--text-2); }
#rosterBody input {
  width: 100%; border: 1px solid transparent; background: transparent;
  padding: 4px 6px; border-radius: 6px; font-size: 13px; font-family: inherit; color: var(--text);
}
#rosterBody input:focus { border-color: var(--primary); background: #fff; outline: none; }
.link-del { color: var(--danger); cursor: pointer; font-size: 12px; }

/* ---------- 全屏适配 ---------- */
body.fs-on .wrap { max-width: none; padding-top: 8px; }
body.fs-on .table-scroll { max-height: calc(100vh - 230px); }
body.fs-on .table-scroll.short { max-height: 40vh; }
body.fs-on .cards { gap: 14px; }
body.fs-on .card b { font-size: 28px; }
body.fs-on .topbar { padding-top: 8px; padding-bottom: 8px; }

/* ---------- 三端自适应（桌面 / 平板 / 手机） ---------- */
@media (max-width: 1180px) {
  .wrap { padding: 16px 16px 40px; }
  .topbar { padding: 10px 16px; }
}

@media (max-width: 1024px) {
  .grid-2 { grid-template-columns: 1fr; }
  .field.grow, .field.grow-2 { flex: 1 1 100%; min-width: 0; }
}

@media (max-width: 768px) {
  body { font-size: 13px; }
  .topbar { flex-wrap: wrap; gap: 10px; }
  .brand-text small { display: none; }
  .top-right { flex-wrap: wrap; gap: 8px; }
  .top-right .btn { padding: 6px 10px; font-size: 12px; }
  .btn b { font-size: 10px; }
  .wrap { padding: 12px 12px 36px; }
  .toolbar { padding: 12px; gap: 10px; }
  .field { flex: 1 1 100%; min-width: 0; }
  .field.btns { flex: 1 1 100%; }
  .field.btns select { width: 100%; }
  .cards { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .card { padding: 10px 12px; }
  .card b { font-size: 20px; }
  .panel-head { flex-direction: column; align-items: flex-start; gap: 6px; }
  .table-scroll { max-height: 56vh; }
  table.grid { font-size: 12px; }
  table.grid th { padding: 8px 10px; white-space: nowrap; }
  table.grid td { padding: 7px 10px; }
  .modal { padding: 10px; }
  .modal-box, .modal-box.wide { width: 100%; max-height: 92vh; }
  .form-grid { grid-template-columns: 1fr; }
  .modal-body { padding: 14px; }
  .roster-bar .chk { font-size: 11px; }
}

@media (max-width: 480px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .brand-text strong { font-size: 14px; }
  .topbar .logo { width: 32px; height: 32px; font-size: 13px; }
  .btn { padding: 6px 9px; font-size: 12px; }
  .field label { font-size: 11px; }
  .roster-bar { gap: 8px; }
  .roster-bar input[type=text] { width: 120px; }
  .panel-head h2 { font-size: 14px; }
  #rosterBody input { font-size: 12px; }
}