:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --panel-2: #f1f3f6;
  --border: #e2e6ec;
  --text: #16191f;
  --muted: #667085;
  --accent: #00a874;
  --accent-strong: #008a5f;
  --accent-soft: #e3f7ef;
  --danger: #d92d20;
  --danger-soft: #fdecea;
  --warn: #c27c0e;
  --warn-soft: #fff4e0;
  --info: #2e6fd8;
  --code-bg: #f1f3f6;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  /* chart series: reference categorical slots 1-3, validated on --panel (light) */
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --grid: #eceff3;
  --radius: 10px;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1013;
    --panel: #16191e;
    --panel-2: #1c2026;
    --border: #2a2f37;
    --text: #e7e9ee;
    --muted: #8b93a1;
    --accent: #00e599;
    --accent-strong: #3ff0b4;
    --accent-soft: rgba(0, 229, 153, .12);
    --danger: #ff6b5e;
    --danger-soft: rgba(255, 107, 94, .12);
    --warn: #f5b546;
    --warn-soft: rgba(245, 181, 70, .12);
    --info: #6aa2ff;
    --code-bg: #0b0d10;
    --shadow: none;
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --grid: #242932;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: 12.5px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.error-text { color: var(--danger); min-height: 1.2em; font-size: 13px; }
h1 { font-size: 22px; margin: 0; font-weight: 650; }
h2 { font-size: 16px; margin: 0 0 12px; font-weight: 600; }
h3 { font-size: 14px; margin: 0 0 8px; font-weight: 600; }

/* ---------- layout ---------- */
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 18px 12px;
  display: flex; flex-direction: column; gap: 18px;
  position: sticky; top: 0; height: 100vh;
}
.sidebar nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar nav a {
  color: var(--text); padding: 8px 12px; border-radius: 8px; font-weight: 500;
}
.sidebar nav a:hover { background: var(--panel-2); text-decoration: none; }
.sidebar nav a.active { background: var(--accent-soft); color: var(--accent-strong); }
.sidebar-foot { margin-top: auto; display: flex; flex-direction: column; gap: 6px; padding: 0 12px; font-size: 13px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 16px; color: var(--text); padding: 0 8px; }
.brand:hover { text-decoration: none; }
.brand.big { font-size: 20px; padding: 0; }
.logo {
  width: 28px; height: 28px; border-radius: 7px; display: grid; place-items: center;
  background: var(--accent); color: #04261a; font-weight: 800;
}
.view { padding: 28px 32px 60px; max-width: 1280px; width: 100%; min-width: 0; }
.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head .sub { color: var(--muted); margin-top: 4px; display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 6px; }

/* ---------- panels & grids ---------- */
.panel {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px 20px; margin-bottom: 18px; min-width: 0;
}
.panel.flush { padding: 0; }
.panel.flush > h2 { padding: 16px 20px 0; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.panel-head h2 { margin: 0; }
.grid { display: grid; gap: 16px; }
.grid.cols-4 { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.stat { padding: 16px 18px; }
.stat .label { color: var(--muted); font-size: 12.5px; text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 22px; font-weight: 650; margin-top: 4px; display: flex; align-items: center; gap: 8px; }
.stat .hint { color: var(--muted); font-size: 12.5px; margin-top: 2px; word-break: break-all; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 18px; font-size: 13.5px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; min-width: 0; word-break: break-all; }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; background: var(--panel-2); }
tr:last-child td { border-bottom: none; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--panel-2); }
td.actions { text-align: right; white-space: nowrap; }
.ep-list { list-style: none; margin: 0; padding: 0; }
.ep-list li { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.ep-list .ep-main { display: flex; align-items: center; gap: 6px 8px; flex-wrap: wrap; min-width: 0; }
.ep-list li:last-child { border-bottom: none; }
table.compact th, table.compact td { padding: 6px 10px; }
table.compact input { width: 100%; }
.empty { padding: 28px; text-align: center; color: var(--muted); }

/* ---------- controls ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px; justify-content: center;
  border: 1px solid var(--border); background: var(--panel); color: var(--text);
  padding: 7px 14px; border-radius: 8px; font: inherit; font-weight: 500; cursor: pointer;
  white-space: nowrap;
}
.btn:hover { background: var(--panel-2); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #04261a; font-weight: 600; }
.btn.primary:hover { filter: brightness(1.06); }
.btn.danger { color: var(--danger); }
.btn.danger.solid { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.sm { padding: 4px 10px; font-size: 13px; }
.btn.wide { width: 100%; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
button.link { background: none; border: none; color: var(--accent-strong); padding: 0; font: inherit; cursor: pointer; text-align: left; }
input, select, textarea {
  font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); font-weight: 500; }
.form { display: flex; flex-direction: column; gap: 14px; }
.form-row { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.form-row > label { flex: 1; min-width: 160px; }
.radio-group { display: flex; gap: 8px; flex-wrap: wrap; }
.radio-group label { flex-direction: row; align-items: center; gap: 6px; border: 1px solid var(--border); border-radius: 8px; padding: 7px 12px; cursor: pointer; color: var(--text); }
.radio-group input { width: auto; margin: 0; }
label.check { flex-direction: row; align-items: flex-start; gap: 8px; color: var(--text); cursor: pointer; }
label.check input { width: auto; margin: 2px 0 0; }
[hidden] { display: none !important; }
.radio-group label:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }

/* ---------- badges & status ---------- */
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--panel-2); color: var(--muted); border: 1px solid var(--border); white-space: nowrap; }
.badge.green { background: var(--accent-soft); color: var(--accent-strong); border-color: transparent; }
.badge.red { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.badge.amber { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.blue { color: var(--info); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); display: inline-block; flex: none; }
.dot.green { background: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.dot.red { background: var(--danger); box-shadow: 0 0 0 3px var(--danger-soft); }
.dot.blue { background: var(--info); }
.dot.amber { background: var(--warn); box-shadow: 0 0 0 3px var(--warn-soft); animation: pulse 1.2s infinite; }
@keyframes pulse { 50% { opacity: .35; } }

/* ---------- tabs ---------- */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 20px; overflow-x: auto; }
.tabs a { padding: 9px 14px; color: var(--muted); font-weight: 500; border-bottom: 2px solid transparent; margin-bottom: -1px; white-space: nowrap; }
.tabs a:hover { color: var(--text); text-decoration: none; }
.tabs a.active { color: var(--text); border-bottom-color: var(--accent); }

/* ---------- branch tree ---------- */
.tree { list-style: none; margin: 0; padding: 0; }
.tree .tree { padding-left: 26px; border-left: 1px dashed var(--border); margin-left: 14px; }
.branch {
  display: grid; grid-template-columns: minmax(200px, 1.3fr) minmax(160px, 1fr) minmax(220px, 1.4fr) auto;
  gap: 14px; align-items: center; padding: 12px 14px; border: 1px solid var(--border);
  border-radius: 9px; margin: 8px 0; background: var(--panel);
}
.branch .name { font-weight: 600; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.branch .meta { font-size: 12.5px; color: var(--muted); }
.branch .eps { display: flex; flex-direction: column; gap: 4px; font-size: 13px; }
.branch .eps span { display: flex; align-items: center; gap: 6px; }
@media (max-width: 1000px) { .branch { grid-template-columns: 1fr; } }

/* ---------- connection box ---------- */
.conn { background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; font-family: var(--mono); font-size: 12.5px; display: flex; align-items: center; gap: 10px; }
.conn .text { flex: 1; overflow-x: auto; white-space: nowrap; }

/* ---------- SQL editor ---------- */
.sql-editor textarea { font-family: var(--mono); font-size: 13px; min-height: 160px; resize: vertical; background: var(--code-bg); }
.result { margin-top: 14px; }
.result .status { font-size: 12.5px; color: var(--muted); margin: 6px 0; }
.result th { text-transform: none; letter-spacing: 0; font-family: var(--mono); }
.result table td { font-family: var(--mono); font-size: 12.5px; white-space: pre; max-width: 420px; overflow: hidden; text-overflow: ellipsis; }
.result .null { color: var(--muted); font-style: italic; }
pre.logs { background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px; padding: 12px; font-family: var(--mono); font-size: 12px; max-height: 70vh; overflow: auto; white-space: pre-wrap; word-break: break-all; margin: 0; }
.bar { height: 8px; border-radius: 4px; background: var(--panel-2); overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--accent); }

/* ---------- modal & toasts ---------- */
.modal-backdrop { position: fixed; inset: 0; background: rgba(10, 12, 16, .55); display: grid; place-items: center; z-index: 50; padding: 16px; }
.modal { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; width: min(560px, 100%); max-height: 92vh; overflow: auto; padding: 22px 24px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.modal h2 { font-size: 18px; margin-bottom: 16px; }
.modal .foot { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; position: sticky; bottom: -22px; background: var(--panel); padding: 12px 0 22px; margin-bottom: -22px; border-top: 1px solid var(--border); }
.toasts { position: fixed; right: 18px; bottom: 18px; display: flex; flex-direction: column; gap: 8px; z-index: 60; }
.toast { background: var(--panel); border: 1px solid var(--border); border-left: 4px solid var(--accent); padding: 10px 14px; border-radius: 8px; box-shadow: 0 8px 24px rgba(0,0,0,.18); max-width: 420px; font-size: 13.5px; }
.toast.error { border-left-color: var(--danger); }
.toast.warn { border-left-color: var(--warn); }
.secret-box { background: var(--warn-soft); border-radius: 8px; padding: 12px; font-size: 13px; }

/* ---------- login ---------- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: min(380px, 100%); background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 28px; display: flex; flex-direction: column; gap: 14px; box-shadow: var(--shadow); }

@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 10px 16px; gap: 10px; }
  .sidebar nav { flex-direction: row; flex-wrap: wrap; }
  .sidebar-foot { margin: 0; flex-direction: row; }
  .view { padding: 18px 16px 40px; }
}

/* ---------- endpoint monitoring ---------- */
.stat-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; margin-bottom: 18px; }
.stat-row .panel { margin: 0; padding: 14px 16px; }
.stat-row .value { font-size: 20px; }
.stat-row .hint { word-break: normal; }
.chart-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 16px; }
.chart-grid .panel { margin: 0; }
@media (max-width: 520px) { .chart-grid { grid-template-columns: 1fr; } }
.chart { position: relative; }
.chart svg { display: block; width: 100%; overflow: visible; touch-action: none; }
.chart .axis text { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .baseline { stroke: var(--border); stroke-width: 1; }
.chart .series { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .hair { stroke: var(--muted); stroke-width: 1; }
.chart .dlabel { fill: var(--text); font-size: 11.5px; }
.chart .empty-note { fill: var(--muted); font-size: 13px; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 12.5px; color: var(--muted); margin: -4px 0 8px; }
.legend span, .tip-row { display: inline-flex; align-items: center; gap: 6px; }
.key { width: 14px; height: 0; border-top: 2px solid; display: inline-block; flex: none; }
.key.dashed { border-top-style: dashed; }
.tip { position: absolute; pointer-events: none; background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 6px 18px rgba(0,0,0,.14); padding: 8px 10px; font-size: 12.5px; min-width: 150px; z-index: 5; }
.tip .tip-time { color: var(--muted); margin-bottom: 4px; }
.tip-row { display: flex; justify-content: space-between; gap: 12px; }
.tip-row b { font-variant-numeric: tabular-nums; }
.tip-row .lbl { color: var(--muted); display: inline-flex; align-items: center; gap: 6px; }
details.table-view { margin-top: 8px; font-size: 12.5px; }
details.table-view summary { cursor: pointer; color: var(--muted); }
details.table-view td, details.table-view th { padding: 5px 10px; font-variant-numeric: tabular-nums; }
.events { list-style: none; margin: 0; padding: 0; font-size: 13px; }
.events li { display: flex; gap: 12px; padding: 7px 0; border-bottom: 1px solid var(--border); }
.events li:last-child { border-bottom: none; }
.events time { color: var(--muted); font-variant-numeric: tabular-nums; flex: none; }
.cu { font-variant-numeric: tabular-nums; white-space: nowrap; }
.sub-note { color: var(--muted); font-size: 12px; }