/* =====================================================================
   L2 Physical Topology page styles (light + dark, no external deps)
   ===================================================================== */
.l2-wrap {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --panel-2: #fafbfd;
  --border: #e2e7ee;
  --text: #23272e;
  --muted: #7b8694;
  --brand: #2f6fdd;
  position: relative;
  display: flex; flex-direction: column;
  height: calc(100vh - 120px); min-height: 520px;
  box-sizing: border-box;
  padding: 4px 2px 4px;
  color: var(--text);
}
.l2-wrap.l2-dark {
  --bg: #0f1521;
  --panel: #161f2e;
  --panel-2: #1b2536;
  --border: #263143;
  --text: #dbe4f0;
  --muted: #8296ad;
  --brand: #4f8bf0;
}

/* toolbar */
.l2-toolbar {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
  flex: 0 0 auto;
  padding: 8px 14px; margin-bottom: 8px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  box-shadow: 0 1px 3px rgba(20,30,50,.05);
}
.tb-title { font-size: 16px; font-weight: 750; letter-spacing: .3px; margin-right: 6px; }
.l2-muted { color: var(--muted); font-size: 12px; }
.l2-spacer { flex: 1 1 auto; }

.l2-search-wrap { position: relative; }
#l2-search {
  width: 240px; height: 34px; padding: 0 12px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text); font-size: 13px;
}
#l2-search:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(79,139,240,.15); }
#l2-sug {
  display: none; position: absolute; z-index: 50; top: 38px; left: 0; width: 340px; max-height: 340px;
  overflow: auto; background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: 0 10px 30px rgba(10,20,40,.18);
}
.sug-row { display: flex; align-items: center; gap: 8px; padding: 8px 12px; cursor: pointer; font-size: 12.5px; }
.sug-row:hover { background: var(--panel-2); }
.sug-kind { flex: 0 0 auto; font-size: 10px; font-weight: 700; padding: 1px 6px; border-radius: 4px; color: #fff; }
.sug-kind.sw { background: #2E75B6; }
.sug-kind.term { background: #2ECC71; }
.sug-lbl { color: var(--text); }
.sug-sub { color: var(--muted); margin-left: auto; font-size: 11.5px; }
.sug-empty { padding: 10px 12px; color: var(--muted); }

.l2-chk { display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; color: var(--text); cursor: pointer; user-select: none; }
.l2-ts-label { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; color: var(--text); }
select.l2-ts-select {
  width: 156px; height: 32px; padding: 0 6px;
  box-sizing: border-box; line-height: normal; font-family: inherit;
  flex: 0 0 auto; margin: 0;
}
select.l2-ts-date { width: 150px; }
select.l2-ts-time { width: 104px; }
select.l2-ts-time:disabled { opacity: .55; }

.l2-btn {
  height: 32px; padding: 0 12px; border-radius: 8px; cursor: pointer; font-size: 12.5px;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text); line-height: 30px;
  box-sizing: border-box;
}
.l2-btn:hover { border-color: var(--brand); color: var(--brand); }
.l2-btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.l2-btn.primary:hover { filter: brightness(1.08); color: #fff; }
.l2-btn.on { background: #E97659; border-color: #E97659; color: #fff; }

/* main split */
.l2-main { display: flex; gap: 10px; align-items: stretch; flex: 1 1 auto; min-height: 0; }
.l2-canvas {
  position: relative; flex: 1 1 auto; min-width: 0; min-height: 0; height: auto;
  background:
    linear-gradient(rgba(120,140,170,.06) 1px, transparent 1px) 0 0 / 26px 26px,
    linear-gradient(90deg, rgba(120,140,170,.06) 1px, transparent 1px) 0 0 / 26px 26px,
    var(--bg);
  border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
}
.l2-dark .l2-canvas { background:
    linear-gradient(rgba(120,150,200,.05) 1px, transparent 1px) 0 0 / 26px 26px,
    linear-gradient(90deg, rgba(120,150,200,.05) 1px, transparent 1px) 0 0 / 26px 26px,
    var(--bg); }
#l2-cy { position: absolute; inset: 0; }
.l2-empty { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 14px; }

.l2-stats {
  position: absolute; left: 12px; top: 12px; z-index: 20;
  padding: 6px 12px; font-size: 12px; border-radius: 8px;
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  border: 1px solid var(--border); color: var(--text); backdrop-filter: blur(4px);
}
.l2-net-tabs {
  position: absolute; right: 12px; top: 12px; z-index: 21; display: flex; gap: 8px;
}
.l2-net-tab {
  border: 1px solid var(--border); background: color-mix(in srgb, var(--panel) 90%, transparent);
  color: var(--muted); font-size: 12.5px; font-weight: 700; padding: 7px 12px; border-radius: 8px;
  cursor: pointer; backdrop-filter: blur(4px);
}
.l2-net-tab:hover { color: var(--text); border-color: var(--brand); }
.l2-net-tab.active { color: #fff; background: var(--brand); border-color: var(--brand); }
.l2-legend {
  position: static; flex: 0 0 auto; z-index: 20;
  max-height: 300px; overflow: auto;
  padding: 10px 12px; font-size: 12px; border-radius: 0;
  background: var(--panel-2);
  border: 0; border-top: 1px solid var(--border); color: var(--text);
}
.lg-title { font-weight: 700; color: var(--muted); font-size: 10.5px; letter-spacing: .6px; text-transform: uppercase; margin: 8px 0 4px; }
.lg-title:first-child { margin-top: 0; }
.lg-row { display: flex; align-items: center; gap: 6px; margin: 3px 0; }
.lg-row.lg-compact { flex-wrap: wrap; gap: 3px 6px; font-size: 11px; }
.lg-row.lg-compact .lg-box { width: 11px; height: 11px; }
.lg-sep { width: 1px; height: 12px; background: var(--border); display: inline-block; margin: 0 1px; }
.lg-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 3px 8px; margin: 3px 0; }
.lg-item { display: flex; align-items: center; gap: 4px; white-space: nowrap; font-size: 11px; min-width: 0; }
.lg-line { width: 20px; height: 0; border-top: 3px solid #999; display: inline-block; flex: 0 0 auto; }
.lg-line.lg-dash { border-top-style: dashed; border-top-color: #E45959; }
.lg-box { width: 12px; height: 12px; border-radius: 2px; display: inline-block; }

/* side panel */
.l2-side { flex: 0 0 330px; display: flex; flex-direction: column; min-height: 0; background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.side-tabs { display: flex; flex: 0 0 auto; border-bottom: 1px solid var(--border); background: var(--panel-2); }
.side-tab { flex: 1; text-align: center; padding: 11px 8px; font-size: 13px; font-weight: 600; cursor: pointer; color: var(--muted); border-bottom: 2px solid transparent; }
.side-tab.active { color: var(--brand); border-bottom-color: var(--brand); background: var(--panel); }
.badge { display: inline-block; min-width: 18px; padding: 0 5px; border-radius: 9px; font-size: 11px; color: #fff; background: #E45959; line-height: 18px; }
.side-body { flex: 1 1 auto; min-height: 0; overflow: auto; }
.panel-sec { display: none; }
.panel-sec.active { display: block; }
.panel-empty { padding: 22px 14px; color: var(--muted); text-align: center; font-size: 13px; }

.alarm-row, .off-row { display: flex; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--border); cursor: pointer; }
.alarm-row:hover, .off-row:hover, .term-row:hover { background: var(--panel-2); }
.alarm-dot { flex: 0 0 auto; width: 9px; height: 9px; border-radius: 50%; margin-top: 4px; }
.alarm-main, .off-main { min-width: 0; }
.alarm-title { font-size: 12.5px; font-weight: 600; color: var(--text); overflow: hidden; text-overflow: ellipsis; }
.alarm-sub { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.off-mac { font-size: 12.5px; font-family: ui-monospace, Menlo, Consolas, monospace; color: var(--text); }
.off-sub { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.term-row { align-items: flex-start; }
.term-dot { flex: 0 0 auto; width: 8px; height: 8px; border-radius: 50%; margin-top: 5px; }
.term-rate { color: var(--brand); font-weight: 700; }
.hist-row.active { background: color-mix(in srgb, var(--brand) 14%, transparent); border-left: 3px solid var(--brand); padding-left: 11px; }
.hist-row.active .off-mac { color: var(--brand); }

/* tooltip */
.l2-tip {
  display: none; position: fixed; z-index: 9999; max-width: 340px;
  padding: 10px 12px; font-size: 12.5px; line-height: 1.55; border-radius: 10px;
  background: rgba(18,26,40,.96); color: #eef4ff; box-shadow: 0 10px 28px rgba(0,0,0,.35);
  pointer-events: none;
}
.l2-tip hr { border: none; border-top: 1px solid rgba(255,255,255,.15); margin: 6px 0; }

@media (max-width: 900px) {
  .l2-wrap { height: auto; min-height: 0; }
  .l2-main { flex-direction: column; }
  .l2-side { flex-basis: auto; height: 360px; }
  .l2-canvas { height: 64vh; }
}