/* ============================================================
   电池通道监管台账 — 样式
   ============================================================ */
:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --ink: #101828;
  --ink-2: #344054;
  --muted: #667085;
  --line: #e4e7ec;
  --line-2: #f0f2f5;
  --primary: #2c4a7c;
  --primary-d: #223a63;
  --primary-soft: #eef2f9;
  --ok: #15a34a;
  --ok-soft: #e9f8ef;
  --warn: #d97706;
  --warn-soft: #fef4e6;
  --bad: #dc2626;
  --bad-soft: #fdeceb;
  --idle: #64748b;
  --idle-soft: #eef1f6;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .04);
  --shadow-md: 0 2px 6px rgba(16, 24, 40, .06);
  --shadow-lg: 0 16px 48px rgba(16, 24, 40, .14);
  --r: 10px;
  --r-sm: 8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, -apple-system, "PingFang SC", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p { margin: 0; }

/* ---------------------------------------------------------- 顶栏 */
.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 22px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 40;
}

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

.logo {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 9px;
  background: var(--primary);
  color: #fff;
  font-size: 19px;
  box-shadow: none;
  flex: 0 0 auto;
}

.brand-text h1 { font-size: 16px; font-weight: 650; letter-spacing: .2px; }
.brand-text .sub { font-size: 12px; color: var(--muted); }

.stats { display: flex; gap: 8px; flex: 1; flex-wrap: wrap; }

.stat {
  display: flex; align-items: baseline; gap: 5px;
  padding: 5px 11px;
  border-radius: 999px;
  background: var(--line-2);
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}
.stat b { color: var(--ink); font-size: 14px; font-weight: 650; }

.topbar-actions { margin-left: auto; }

/* ---------------------------------------------------------- 标签页 */
.tabs {
  display: flex;
  gap: 4px;
  padding: 0 22px;
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 67px;
  z-index: 39;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }

.tabs button {
  appearance: none;
  border: 0;
  background: none;
  padding: 12px 16px;
  font-size: 14px;
  font-family: inherit;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: color .15s;
}
.tabs button:hover { color: var(--ink-2); }
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

/* ---------------------------------------------------------- 布局 */
main { padding: 20px 22px 60px; max-width: 1600px; margin: 0 auto; }

.panel { display: none; }
.panel.active { display: block; animation: fade .18s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.toolbar.wrap { flex-wrap: wrap; }
.spacer { flex: 1; }

/* ---------------------------------------------------------- 控件 */
.input, select.input, textarea.input {
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 9px 12px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
  min-width: 0;
}
.input:focus, select.input:focus, textarea.input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
}
.input.search { width: 260px; }
.input.sm { width: 84px; }
textarea.input { resize: vertical; }
select.input { cursor: pointer; }

.btn {
  appearance: none;
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 500;
  padding: 9px 14px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  cursor: pointer;
  white-space: nowrap;
  transition: all .15s;
}
.btn:hover { border-color: #cbd5e1; background: #fafbfd; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 2px 8px rgba(37,99,235,.25); }
.btn.primary:hover { background: var(--primary-d); border-color: var(--primary-d); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--bad); border-color: #f3c9c7; background: #fff; }
.btn.danger:hover { background: var(--bad-soft); }
.btn.lg { padding: 11px 22px; font-size: 15px; }
.btn.sm { padding: 5px 10px; font-size: 12.5px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.seg {
  display: inline-flex;
  background: var(--line-2);
  border-radius: var(--r-sm);
  padding: 3px;
  gap: 2px;
}
.seg button {
  appearance: none;
  border: 0;
  background: none;
  font-family: inherit;
  font-size: 13px;
  color: var(--muted);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
}
.seg button.active { background: #fff; color: var(--ink); font-weight: 600; box-shadow: var(--shadow-sm); }

/* 小的分段按钮（卡片密度切换） */
.seg.seg-mini { padding: 2px; }
.seg-mini button { padding: 5px 10px; font-size: 12px; }

/* 添加通道弹窗：排号 + 编号预览网格 */
.ac-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 13px; }
.ac-row .form-row { margin-bottom: 0; }

.ac-preview {
  padding: 11px 12px;
  margin-bottom: 12px;
  background: #f8fafd;
  border: 1px dashed var(--line);
  border-radius: var(--r-sm);
}
.ac-preview-head { font-size: 12.5px; color: var(--muted); margin-bottom: 10px; }
.ac-preview-head b { color: var(--ink); font-size: 14px; }

.code-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(76px, 1fr));
  gap: 6px;
}
.code-input {
  font-family: inherit;
  font-size: 12.5px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 7px;
  outline: none;
  width: 100%;
  min-width: 0;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.code-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37, 99, 235, .12); }
.code-input.bad { border-color: var(--bad); background: var(--bad-soft); color: var(--bad); }

.badge {
  display: inline-block;
  font-size: 11.5px;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--line-2);
  color: var(--muted);
  font-weight: 500;
}

/* ---------------------------------------------------------- 看板卡片 */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(268px, 1fr));
  gap: 14px;
}

/* ---------------------------------------------------------- 分组 */
.board { display: block; }

.group { margin-bottom: 26px; }
.group:last-child { margin-bottom: 0; }

.group-head {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 11px;
  padding: 0 2px;
  min-height: 26px;
}
.group-name {
  font-size: 15px;
  font-weight: 650;
  color: var(--ink);
  letter-spacing: .2px;
}
.group-name.plain { color: var(--muted); font-weight: 600; }
.group-name[data-edit] {
  cursor: text;
  border-radius: 5px;
  padding: 1px 5px;
  margin: 0 -5px;
  transition: background .12s, box-shadow .12s;
}
.group-name[data-edit]:hover { background: #eef4ff; box-shadow: 0 0 0 3px #eef4ff; }
.group-name.editing { position: relative; z-index: 2; }
.group-head .icon-btn { margin-left: 2px; opacity: .3; transition: opacity .15s, color .15s; }
.group-head:hover .icon-btn { opacity: .75; }
.group-head .icon-btn:hover { opacity: 1; color: var(--bad); background: var(--bad-soft); }

.group-empty {
  grid-column: 1 / -1;
  border: 1px dashed #d8e0ee;
  border-radius: var(--r);
  padding: 20px;
  text-align: center;
  color: #9aa8bd;
  font-size: 13px;
  background: #fbfcfe;
  pointer-events: none;
}

.card[draggable="true"] { cursor: grab; }
.card[draggable="true"]:active { cursor: grabbing; }
.card.dragging { opacity: .4; box-shadow: none; transform: none; }
.card.dragging:hover { box-shadow: none; transform: none; }

/* ================= 紧凑视图（一屏看更多通道） ================= */
.board.dense .grid {
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 8px;
}
.board.dense .group { margin-bottom: 16px; }
.board.dense .group-head { margin-bottom: 7px; min-height: 20px; }
.board.dense .group-name { font-size: 13.5px; }
.board.dense .group-head .badge { font-size: 11px; padding: 0 6px; }

.card.dense {
  padding: 8px 10px 9px;
  gap: 3px;
  border-top-width: 3px;
  border-radius: 10px;
}
.card.dense .dense-top {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}
.card.dense .ch-code { font-size: 14.5px; letter-spacing: 0; }
.card.dense .card-del { margin-left: auto; padding: 2px 3px; font-size: 11px; }

.dense-status {
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 999px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 68px;
}
.dense-status.ok { background: var(--ok-soft); color: var(--ok); }
.dense-status.bad { background: var(--bad-soft); color: var(--bad); }
.dense-status.warn { background: var(--warn-soft); color: var(--warn); }
.dense-status.idle { background: var(--idle-soft); color: var(--idle); }
.dense-status.blue { background: var(--primary-soft); color: var(--primary); }
.dense-status.none { background: var(--line-2); color: #94a3b8; }

.dense-bat {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.4;
  color: #1e3a8a;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card.dense.empty-channel .dense-bat { color: #9aa8bd; font-weight: 500; font-size: 13px; }

.dense-metrics {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-variant-numeric: tabular-nums;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 14px 15px;
  box-shadow: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color .16s;
  position: relative;
  overflow: hidden;
}
.card:hover { border-color: #c9d2e0; }

/* 顶部色条跟随“状态语义”，而不依赖用户自定义的状态文字 */
.card.busy { border-top: 2px solid var(--ok); }
.card.busy.st-ok { border-top-color: var(--ok); }
.card.busy.st-bad { border-top-color: var(--bad); }
.card.busy.st-idle { border-top-color: var(--idle); }
.card.busy.st-blue { border-top-color: var(--primary); }
.card.busy.st-warn { border-top-color: var(--warn); }
.card.busy.st-none { border-top-color: #cbd5e1; }
.card.empty-channel { border-style: dashed; background: #fcfcfd; box-shadow: none; }

/* 桌面端：卡片里的操作按钮平时压低存在感，指针进入卡片才完全显现。
   一屏十几张卡片各挂两个按钮，是最容易显得“模板化”的地方。
   触摸设备没有 hover，用 pointer:fine 排除，手机上仍然常驻可见。 */
@media (hover: hover) and (pointer: fine) {
  .card-actions { opacity: .68; transition: opacity .16s; }
  .card:hover .card-actions,
  .card:focus-within .card-actions { opacity: 1; }
}

.card-head { display: flex; align-items: center; gap: 8px; }
.ch-code {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .3px;
  color: var(--ink);
}
.ch-name { font-size: 12px; color: var(--muted); margin-left: auto; max-width: 45%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 看板上就地改名：通道编号与名称都可以直接点 */
.ch-code, .ch-name {
  cursor: text;
  border-radius: 5px;
  transition: background .12s, box-shadow .12s, color .12s;
}
.ch-code:hover, .ch-name:hover {
  background: #eef4ff;
  box-shadow: 0 0 0 3px #eef4ff;
}
.ch-code:hover { color: var(--primary); }
.ch-name.is-empty { color: #b9c5d6; font-weight: 400; }
.ch-name.editing { max-width: 72%; overflow: visible; position: relative; z-index: 2; }

/* 卡片右上角的删除按钮 */
.card-del {
  appearance: none;
  border: 0;
  background: none;
  font-family: inherit;
  font-size: 12px;
  line-height: 1;
  color: #b8c4d6;
  cursor: pointer;
  padding: 3px 4px;
  border-radius: 5px;
  opacity: .22;
  flex: 0 0 auto;
  transition: opacity .13s, color .13s, background .13s;
}
.card:hover .card-del { opacity: .8; }
.card-del:hover, .card-del:focus-visible { color: var(--bad); background: var(--bad-soft); opacity: 1; }

/* 设置页里的已归档通道 */
.arch-divider {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 12px;
  color: var(--muted);
}
.admin-item.archived { background: #fafbfd; }
.admin-item.archived .grow { color: var(--muted); font-size: 12.5px; }
.admin-item.archived .grow b { color: var(--ink-2); font-weight: 600; }

.inline-edit {
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  letter-spacing: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--primary);
  border-radius: 6px;
  padding: 1px 6px;
  outline: none;
  width: 9em;
  min-width: 72px;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, .14);
}
.inline-edit.code { width: 5.5em; font-size: 15px; font-weight: 700; }

.chip {
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 999px;
  white-space: nowrap;
}
.chip.ok { background: var(--ok-soft); color: var(--ok); }
.chip.bad { background: var(--bad-soft); color: var(--bad); }
.chip.warn { background: var(--warn-soft); color: var(--warn); }
.chip.idle { background: var(--idle-soft); color: var(--idle); }
.chip.blue { background: var(--primary-soft); color: var(--primary); }
.chip.none { background: var(--line-2); color: #94a3b8; }

.bat-block {
  background: transparent;
  border: 0;
  border-left: 2.5px solid var(--primary);
  border-radius: 0;
  padding: 1px 0 1px 10px;
}
.bat-code { font-size: 16.5px; font-weight: 600; color: var(--ink); letter-spacing: 0; word-break: break-all; }
.bat-meta { font-size: 11.5px; color: var(--muted); margin-top: 2px; }

.no-battery {
  border: 1px dashed #d8e0ee;
  border-radius: 9px;
  padding: 14px 11px;
  text-align: center;
  color: #9aa8bd;
  font-size: 13px;
}

.metrics { display: flex; flex-wrap: wrap; gap: 5px 6px; }
.metric {
  display: inline-flex;
  align-items: baseline;
  gap: 3px;
  background: #f6f8fc;
  border-radius: 6px;
  padding: 3px 7px;
  font-size: 12px;
  color: var(--muted);
}
.metric b { color: var(--ink); font-size: 13px; font-weight: 650; font-variant-numeric: tabular-nums; }
.metric .u { font-size: 10.5px; color: #9aa8bd; }

.card-foot {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 4px;
  font-size: 12px;
  color: var(--muted);
}
.card-actions { margin-left: auto; display: flex; gap: 6px; }

.mini-btn {
  appearance: none;
  font-family: inherit;
  font-size: 12.5px;
  padding: 5px 11px;
  border-radius: 7px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink-2);
  cursor: pointer;
  transition: all .15s;
}
.mini-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
.mini-btn.accent { background: var(--primary); border-color: var(--primary); color: #fff; }
.mini-btn.accent:hover { background: var(--primary-d); color: #fff; }

/* ---------------------------------------------------------- 通用块 */
.card-block {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 18px 20px;
  box-shadow: var(--shadow-sm);
}
.block-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.block-head h2 { font-size: 15px; font-weight: 650; }
.hint { font-size: 12px; color: var(--muted); font-weight: 400; }
.muted { color: var(--muted); }

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: 16px;
  align-items: start;
}

.section-title {
  font-size: 14px;
  font-weight: 650;
  margin: 22px 0 10px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.section-title:first-of-type { margin-top: 4px; }

/* ---------------------------------------------------------- 表单 */
.form-row { display: flex; flex-direction: column; gap: 6px; margin-bottom: 13px; }
.form-row.inline { flex-direction: row; align-items: center; gap: 8px; }
.form-row label { font-size: 12.5px; font-weight: 600; color: var(--ink-2); }
.form-row.inline .input { flex: 1; }

.form-grid {
  display: grid;
  /* auto-fit + 上限 260px：字段少的时候不会把输入框拉得过宽 */
  grid-template-columns: repeat(auto-fit, minmax(150px, 260px));
  gap: 12px;
  margin-bottom: 13px;
}
.form-grid .form-row { margin-bottom: 0; }

.form-actions { display: flex; align-items: center; gap: 14px; margin-top: 6px; }

.battery-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--primary-soft);
  border: 1px solid #dbe7ff;
  border-radius: var(--r-sm);
  padding: 10px 13px;
  margin-bottom: 14px;
  font-size: 13px;
  color: #1e3a8a;
  flex-wrap: wrap;
}
.battery-banner.empty { background: #fbfcfe; border-color: #e6ebf3; color: var(--muted); }
.battery-banner b { font-size: 14px; }

.code-line {
  font-family: Consolas, "Courier New", monospace;
  font-size: 12px;
  background: #f6f8fc;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  padding: 8px 10px;
  margin-bottom: 12px;
  word-break: break-all;
  color: var(--ink-2);
}

/* ---------------------------------------------------------- 列表 / 时间线 */
.recent-list { display: flex; flex-direction: column; gap: 8px; max-height: 560px; overflow: auto; }

.recent-item {
  display: flex;
  gap: 10px;
  padding: 9px 11px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  background: #fcfdff;
  font-size: 12.5px;
  align-items: flex-start;
}
.recent-item .t { color: var(--muted); font-size: 11.5px; white-space: nowrap; padding-top: 2px; }
.recent-item .body { flex: 1; min-width: 0; }
.recent-item .line { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.recent-item .vals { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.recent-item .note { color: var(--muted); font-size: 11.5px; margin-top: 2px; word-break: break-word; }

.battery-list { display: flex; flex-direction: column; gap: 7px; max-height: 720px; overflow: auto; }
.battery-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all .15s;
  background: #fff;
}
.battery-item:hover { border-color: #c7d5f0; background: #f9fbff; }
.battery-item.active { border-color: var(--primary); background: var(--primary-soft); }
.battery-item .bcode { font-weight: 650; font-size: 14px; }
.battery-item .bmeta { font-size: 11.5px; color: var(--muted); }
.battery-item .right { margin-left: auto; text-align: right; display: flex; flex-direction: column; gap: 3px; align-items: flex-end; }

.timeline { position: relative; padding-left: 20px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 5px; top: 6px; bottom: 6px;
  width: 2px;
  background: var(--line);
}
.tl-item { position: relative; padding-bottom: 16px; }
.tl-item::before {
  content: "";
  position: absolute;
  left: -19px; top: 5px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--primary);
}
.tl-item.placement::before { border-color: var(--ok); }
.tl-item.snapshot::before { border-color: #94a3b8; }
.tl-time { font-size: 11.5px; color: var(--muted); }
.tl-title { font-size: 13.5px; font-weight: 600; margin-top: 1px; }
.tl-desc { font-size: 12px; color: var(--ink-2); margin-top: 2px; word-break: break-word; }

.kv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  margin: 12px 0;
}
.kv {
  background: #f8fafd;
  border: 1px solid var(--line-2);
  border-radius: 8px;
  padding: 8px 11px;
}
.kv .k { font-size: 11px; color: var(--muted); }
.kv .v { font-size: 15px; font-weight: 650; font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------- 表格 */
.table-wrap {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: auto;
  box-shadow: var(--shadow-sm);
  max-height: 520px;
}
.table { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.table th, .table td {
  padding: 9px 12px;
  text-align: left;
  border-bottom: 1px solid var(--line-2);
  white-space: nowrap;
}
.table th {
  position: sticky;
  top: 0;
  background: #f7f9fd;
  font-weight: 600;
  color: var(--ink-2);
  font-size: 12px;
  z-index: 1;
  border-bottom: 1px solid var(--line);
}
.table tbody tr:hover { background: #fafcff; }
.table td.num { font-variant-numeric: tabular-nums; text-align: right; }
.table .empty-cell { text-align: center; color: var(--muted); padding: 26px; }

/* ---------------------------------------------------------- 设置 */
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 16px; align-items: start; }

.admin-list { display: flex; flex-direction: column; gap: 6px; margin-top: 12px; max-height: 560px; overflow: auto; }
.admin-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 1px solid var(--line-2);
  border-radius: 7px;
  font-size: 13px;
  background: #fcfdff;
}
.admin-item .grow { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.icon-btn {
  appearance: none;
  border: 0;
  background: none;
  cursor: pointer;
  color: var(--muted);
  font-size: 14px;
  padding: 2px 6px;
  border-radius: 5px;
  font-family: inherit;
}
.icon-btn:hover { background: var(--line-2); color: var(--ink); }

.chip-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }

/* ---------------------------------------------------------- 空状态 */
.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}
.empty.small { padding: 40px 16px; }
.empty-icon { font-size: 34px; margin-bottom: 10px; opacity: .55; }
.empty p { margin: 4px 0; }
.empty code { background: var(--line-2); padding: 1px 6px; border-radius: 4px; font-size: 12px; }
.hidden { display: none !important; }

/* ---------------------------------------------------------- 弹窗 */
.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, .42);
  backdrop-filter: blur(2px);
  display: grid;
  place-items: center;
  z-index: 100;
  padding: 20px;
  animation: fade .15s ease;
}
.modal {
  background: #fff;
  border-radius: 14px;
  width: min(560px, 100%);
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  animation: pop .18s cubic-bezier(.2,.9,.3,1.2);
}
@keyframes pop { from { opacity: 0; transform: scale(.97) translateY(6px); } to { opacity: 1; transform: none; } }
.modal.wide { width: min(760px, 100%); }
.modal-head {
  display: flex;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.modal-head h3 { font-size: 15px; font-weight: 650; }
.modal-head .icon-btn { margin-left: auto; font-size: 16px; }
.modal-body { padding: 18px 20px; overflow: auto; }
.modal-foot {
  display: flex;
  gap: 9px;
  padding: 14px 20px;
  border-top: 1px solid var(--line);
  background: #fbfcfe;
  border-radius: 0 0 14px 14px;
  flex-wrap: wrap;
}
.modal-foot .spacer { flex: 1; }

/* ---------------------------------------------------------- Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 30px;
  transform: translate(-50%, 20px);
  background: #101828;
  color: #fff;
  padding: 11px 20px;
  border-radius: 10px;
  font-size: 13.5px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all .25s;
  z-index: 200;
  max-width: 90vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.err { background: var(--bad); }
.toast.ok { background: #067647; }

/* ---------------------------------------------------------- 响应式 */
@media (max-width: 900px) {
  .topbar { flex-wrap: wrap; gap: 8px; padding: 10px 12px; }
  .brand-text .sub { display: none; }
  .brand-text h1 { font-size: 15px; }
  .logo { width: 34px; height: 34px; font-size: 17px; }
  .topbar-actions { margin-left: auto; }
  .topbar-actions .btn { padding: 7px 12px; }

  /* 统计改成一行横向滚动，别挤成一列 */
  .stats {
    order: 3;
    flex: 1 1 100%;
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
  }
  .stats::-webkit-scrollbar { display: none; }
  .stat { flex: 0 0 auto; padding: 4px 9px; font-size: 11.5px; }
  .stat b { font-size: 13px; }

  .tabs { top: 0; position: sticky; padding: 0 6px; }
  .tabs button { padding: 9px 10px; font-size: 13px; }

  main { padding: 11px 10px 60px; }
  .split { grid-template-columns: 1fr; }
  .settings-grid { grid-template-columns: 1fr; }
  .input.search { width: 100%; }
  .toolbar { flex-wrap: wrap; gap: 7px; margin-bottom: 11px; }
  .toolbar .btn { padding: 7px 11px; font-size: 13px; }
  .seg button { padding: 5px 10px; font-size: 12.5px; }
  .seg-mini button { padding: 5px 9px; font-size: 12px; }
  /* 触屏拖不了，别提示 */
  #dragHint { display: none; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
  .card-block { padding: 14px 14px; }
  .modal { max-height: 92vh; }
  .card-del { opacity: .5; }

  /* 紧凑模式在手机上用两列 */
  .board.dense .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }
  .card.dense { padding: 7px 9px 8px; }
  .board.dense .group { margin-bottom: 13px; }
  .board.dense .group-head { margin-bottom: 6px; }
}

/* ============================================================
   账号菜单（多用户）
   ============================================================ */
.ubox { position: relative; }

.ubtn { display: inline-flex; align-items: center; gap: 7px; }

.uavatar {
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--primary-soft); color: var(--primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11.5px; font-weight: 500; flex: 0 0 auto;
}

.uname { max-width: 130px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.umenu {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 60;
  min-width: 200px; padding: 6px;
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 11px; box-shadow: var(--shadow-lg);
}

.umenu-head {
  padding: 8px 11px 9px; border-bottom: 1px solid var(--line-2);
  margin-bottom: 5px; display: flex; align-items: baseline; gap: 7px;
}
.umenu-head b { font-size: 13.5px; color: var(--ink); font-weight: 500; }
.urole { font-size: 11.5px; color: var(--muted); }

.umenu button {
  display: block; width: 100%; text-align: left;
  padding: 9px 11px; border: 0; background: none; border-radius: 7px;
  font-size: 13.5px; color: var(--ink-2); cursor: pointer; font-family: inherit;
}
.umenu button:hover { background: var(--line-2); }
.umenu button.danger { color: var(--bad); }

.acting-bar {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 8px 16px; font-size: 13px;
  background: var(--warn-soft); color: #8a5a00;
  border-bottom: 1px solid #f2dcae;
}
.acting-bar b { font-weight: 500; }
.btn.tiny { padding: 4px 10px; font-size: 12.5px; }

.user-row {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 2px; border-bottom: 1px solid var(--line-2);
}
.user-row:last-child { border-bottom: 0; }
.user-row .who { flex: 1; min-width: 0; }
.user-row .who b { font-size: 13.5px; font-weight: 500; color: var(--ink); }
.user-row .who span { display: block; font-size: 12px; color: var(--muted); margin-top: 2px; }
.user-row .tag {
  font-size: 11px; padding: 2px 7px; border-radius: 99px;
  background: var(--idle-soft); color: var(--idle);
}
.user-row .tag.admin { background: var(--primary-soft); color: var(--primary); }
.user-row .tag.off { background: var(--bad-soft); color: var(--bad); }

.form-row { margin-bottom: 11px; }
.form-row label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 5px; }
.form-row input {
  width: 100%; box-sizing: border-box; padding: 9px 11px; font-size: 14px;
  border: 1px solid var(--line); border-radius: 8px; outline: none; font-family: inherit;
}
.form-row input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }

/* ============================================================
   测试方法（共享知识库）
   ============================================================ */
.mt-wrap {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.mt-side {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.mt-tools { padding: 12px; border-bottom: 1px solid var(--line-2); }
.mt-tools input {
  width: 100%; box-sizing: border-box; padding: 9px 11px; font-size: 13.5px;
  border: 1px solid var(--line); border-radius: var(--r-sm); outline: none; font-family: inherit;
}
.mt-tools input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.mt-tools-row { display: flex; gap: 8px; margin-top: 9px; }
.mt-tools-row select {
  flex: 1; min-width: 0; padding: 8px 9px; font-size: 13px;
  border: 1px solid var(--line); border-radius: var(--r-sm); background: #fff; font-family: inherit;
}
.mt-tools-row .btn { padding: 8px 13px; font-size: 13px; white-space: nowrap; }

.mt-list { max-height: calc(100vh - 260px); overflow-y: auto; padding: 6px; }

.mt-item {
  padding: 10px 11px; border-radius: var(--r-sm); cursor: pointer;
  border: 1px solid transparent; margin-bottom: 3px;
}
.mt-item:hover { background: var(--line-2); }
.mt-item.active { background: var(--primary-soft); border-color: #cddffb; }
.mt-item h4 {
  margin: 0 0 4px; font-size: 13.5px; font-weight: 500; color: var(--ink);
  line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.mt-item .mt-sub {
  font-size: 11.5px; color: var(--muted); display: flex; gap: 6px; flex-wrap: wrap; align-items: center;
}
.mt-chip {
  font-size: 11px; padding: 1px 6px; border-radius: 99px;
  background: var(--idle-soft); color: var(--idle);
}
.mt-chip.cat { background: var(--primary-soft); color: var(--primary); }

.mt-main {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--shadow-sm); min-height: 420px; padding: 22px 24px;
}

.mt-blank { text-align: center; padding: 70px 20px; color: var(--muted); }
.mt-blank-icon { font-size: 36px; margin-bottom: 10px; }
.mt-blank p { margin: 6px 0; font-size: 13.5px; }

.mt-head { border-bottom: 1px solid var(--line-2); padding-bottom: 14px; margin-bottom: 16px; }
.mt-head h2 { margin: 0 0 8px; font-size: 20px; color: var(--ink); line-height: 1.4; }
.mt-metas { display: flex; gap: 10px; flex-wrap: wrap; font-size: 12px; color: var(--muted); align-items: center; }
.mt-actions { display: flex; gap: 8px; margin-left: auto; }
.mt-actions .btn { padding: 5px 11px; font-size: 12.5px; }

.mt-summary {
  background: var(--primary-soft); border-left: 3px solid var(--primary);
  padding: 10px 13px; border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 13.5px; color: var(--ink-2); margin-bottom: 18px; line-height: 1.65;
}

.mt-content { font-size: 14px; line-height: 1.85; color: var(--ink-2); }
.mt-content h2 { font-size: 16px; margin: 22px 0 10px; color: var(--ink); }
.mt-content h3 { font-size: 14.5px; margin: 18px 0 8px; color: var(--ink); }
.mt-content p { margin: 0 0 12px; }
.mt-content ul { margin: 0 0 14px; padding-left: 22px; }
.mt-content li { margin-bottom: 5px; }
.mt-content code {
  background: var(--line-2); padding: 1.5px 5px; border-radius: 4px;
  font-size: 12.5px; font-family: ui-monospace, Consolas, monospace;
}
.mt-content pre {
  background: #0f172a; color: #e2e8f0; padding: 13px 15px; border-radius: var(--r-sm);
  overflow-x: auto; font-size: 12.5px; line-height: 1.6; margin: 0 0 14px;
}
.mt-content pre code { background: none; color: inherit; padding: 0; }
.mt-content blockquote {
  margin: 0 0 14px; padding: 8px 14px; border-left: 3px solid var(--line);
  color: var(--muted); background: var(--line-2); border-radius: 0 var(--r-sm) var(--r-sm) 0;
}

.mt-files { margin-top: 26px; border-top: 1px solid var(--line-2); padding-top: 16px; }
.mt-files h3 { font-size: 13.5px; margin: 0 0 10px; color: var(--ink); }
.mt-file {
  display: flex; align-items: center; gap: 10px; padding: 9px 11px;
  border: 1px solid var(--line); border-radius: var(--r-sm); margin-bottom: 7px;
  font-size: 13px; background: #fff;
}
.mt-file:hover { border-color: #cddffb; background: var(--primary-soft); }
.mt-file a { color: var(--ink-2); text-decoration: none; flex: 1; min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mt-file a:hover { color: var(--primary); }
.mt-file .sz { color: var(--muted); font-size: 11.5px; flex: 0 0 auto; }
.mt-file .del {
  border: 0; background: none; color: var(--muted); cursor: pointer; font-size: 15px;
  padding: 2px 6px; border-radius: 5px; line-height: 1;
}
.mt-file .del:hover { color: var(--bad); background: var(--bad-soft); }

.mt-drop {
  margin-top: 10px; border: 1.5px dashed var(--line); border-radius: var(--r-sm);
  padding: 16px; text-align: center; font-size: 12.5px; color: var(--muted); cursor: pointer;
}
.mt-drop:hover, .mt-drop.over { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); }

.mt-form .form-row { margin-bottom: 12px; }
.mt-form textarea {
  width: 100%; box-sizing: border-box; min-height: 240px; padding: 11px 13px;
  font-size: 13.5px; line-height: 1.75; border: 1px solid var(--line);
  border-radius: var(--r-sm); outline: none; font-family: inherit; resize: vertical;
}
.mt-form textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.12); }
.mt-form .hint-line { font-size: 11.5px; color: var(--muted); margin-top: 5px; }

@media (max-width: 900px) {
  .mt-wrap { grid-template-columns: 1fr; gap: 12px; }
  .mt-list { max-height: 40vh; }
  .mt-main { padding: 16px 15px; min-height: 0; }
  .mt-head h2 { font-size: 17px; }
  .mt-actions { margin-left: 0; width: 100%; }
  .mt-content { font-size: 13.5px; }
}

/* 卡片主操作：平时描边，指针进入卡片才填色。
   必须放在 .mini-btn.accent 之后，否则会被上面的实心规则盖掉。 */
@media (hover: hover) and (pointer: fine) {
  .card .mini-btn.accent {
    background: transparent;
    color: var(--primary);
    border-color: #cfd9e8;
  }
  .card:hover .mini-btn.accent,
  .card:focus-within .mini-btn.accent {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
  }
}

/* ============================================================
   A 方案加强：统计读数、状态圆点、等宽编号、分组色条
   放在文件末尾以保证覆盖上面的基础定义
   ============================================================ */
.stats { gap: 0; align-items: center; }
.stat {
  background: none;
  border-radius: 0;
  padding: 0 15px;
  border-left: 1px solid var(--line);
  font-size: 11.5px;
  gap: 5px;
}
.stat:first-child { padding-left: 0; border-left: 0; }
.stat b {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -.6px;
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
}

.chip {
  background: none;
  padding: 0 0 0 11px;
  border-radius: 0;
  position: relative;
  font-size: 11.5px;
  font-weight: 600;
}
.chip::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.ch-code {
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -.4px;
}

.group-head { padding-left: 10px; border-left: 3px solid var(--primary); }
.group-name { font-size: 14px; font-weight: 600; }

/* ============================================================
   充放电数据
   ============================================================ */
.ts-stats {
  display: flex;
  flex-wrap: wrap;
  margin: 4px 0 22px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}
.ts-stat {
  flex: 1 1 110px;
  padding: 12px 14px;
  border-right: 1px solid var(--line-2);
}
.ts-stat:last-child { border-right: 0; }
.ts-stat b {
  display: block;
  font-size: 19px;
  font-weight: 600;
  color: var(--ink);
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  letter-spacing: -.5px;
}
.ts-stat span { display: block; font-size: 11.5px; color: var(--muted); margin-top: 3px; }

.ts-chart-box { margin-top: 18px; }
.ts-chart-title {
  font-size: 13px;
  color: var(--ink-2);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.ts-chart-title select {
  padding: 5px 9px;
  font-size: 12.5px;
  border: 1px solid var(--line);
  border-radius: 7px;
  font-family: inherit;
  background: #fff;
}
.ts-chart-box canvas { width: 100%; display: block; }

@media (max-width: 900px) {
  .ts-stat { flex: 1 1 45%; border-bottom: 1px solid var(--line-2); }
  .ts-stat b { font-size: 17px; }
}

/* 卡片上的测试数据标记 */
.ts-mark {
  border: 0;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 5px;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  line-height: 1.5;
}
.ts-mark:hover { background: #dbe6f6; }

/* 正文插图 */
.mt-fig {
  margin: 18px 0 22px;
  text-align: center;
}
.mt-fig img {
  max-width: 100%;
  max-height: 560px;
  width: auto;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  display: block;
  margin: 0 auto;
}
.mt-fig figcaption {
  font-size: 12px;
  color: var(--muted);
  margin-top: 8px;
}

/* 实验方法：分组 */
.mt-group { margin-bottom: 10px; }
.mt-group-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-2);
  letter-spacing: .3px;
}
.mt-group-head em {
  font-style: normal;
  font-size: 11px;
  font-weight: 500;
  color: var(--muted);
  background: var(--line-2);
  padding: 1px 6px;
  border-radius: 4px;
}
.mt-gdel {
  margin-left: auto;
  border: 0;
  background: none;
  color: var(--muted);
  font-size: 12px;
  cursor: pointer;
  opacity: 0;
  transition: opacity .15s, color .15s;
  padding: 2px 4px;
}
.mt-group-head:hover .mt-gdel { opacity: 1; }
.mt-gdel:hover { color: var(--bad); }

/* ============================================================
   分组折叠（看板 + 实验方法）
   ============================================================ */
.group-caret {
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid currentColor;
  margin-right: 7px;
  flex: none;
  transition: transform .18s ease;
  opacity: .55;
}
.collapsed > .group-head .group-caret,
.collapsed > .mt-group-head .group-caret { transform: rotate(-90deg); }

.collapsed > .group-body,
.collapsed > .mt-group-body { display: none; }

.group-head.is-toggle,
.mt-group-head.is-toggle {
  cursor: pointer;
  user-select: none;
}
.group-head.is-toggle:hover,
.mt-group-head.is-toggle:hover { opacity: .82; }

/* 折叠时给个「还有多少」的提示 */
.collapsed > .group-head,
.collapsed > .mt-group-head { opacity: .78; }