:root {
  --demo-h: 32px;
  --head-h: 52px;
  --cfg-w: 304px;
  --bg0: #0b0e13;
  --bg1: #11151c;
  --bg2: #171c25;
  --bg3: #1f2531;
  --border: #252c39;
  --border-2: #323a4a;
  --text: #e6e9ef;
  --text-2: #9aa3b2;
  --text-3: #6b7486;
  --accent: #34d399;
  --accent-ink: #052e1f;
  --chat: #60a5fa;
  --long: #c084fc;
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #f87171;
  --radius: 8px;
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 14px; line-height: 1.45; background: var(--bg0); color: var(--text);
  overflow-x: hidden;
}
a { color: var(--chat); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: 0.92em; font-variant-ligatures: none; }
.snip, .rlog td, .brand-name { font-variant-ligatures: none; }
[hidden] { display: none !important; }
.muted { color: var(--text-2); }
.hint { color: var(--text-3); font-size: 12px; font-weight: 400; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link { position: absolute; left: -999px; top: 0; z-index: 100; background: var(--accent); color: var(--accent-ink); padding: 6px 10px; }
.skip-link:focus { left: 8px; top: 40px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- demo bar ---------- */
.demo-bar {
  position: fixed; inset: 0 0 auto 0; height: var(--demo-h); z-index: 60;
  display: flex; align-items: center; gap: 8px; padding: 0 12px;
  background: #07090c; border-bottom: 1px solid #1d222b; font-size: 12.5px; color: #b9bac6;
}
.demo-back { color: #dfe0ea; font-weight: 500; white-space: nowrap; }
.demo-name { color: #e8e9f0; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.demo-note { color: #8e8e9a; white-space: nowrap; }
.demo-sep { color: #555; }
.demo-spacer { flex: 1; }
.demo-btn {
  height: 22px; padding: 0 9px; border-radius: 3px; border: 1px solid #3a3d45; background: #15181e;
  color: #dfe0ea; font-size: 12px; cursor: pointer; white-space: nowrap; font-family: inherit;
}
.demo-btn:hover { background: #22262e; }

/* ---------- header ---------- */
.app-head {
  position: fixed; top: var(--demo-h); left: 0; right: 0; height: var(--head-h); z-index: 50;
  display: flex; align-items: center; gap: 16px; padding: 0 16px;
  background: var(--bg1); border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; color: var(--accent); white-space: nowrap; }
.brand-name { font-family: var(--mono); font-weight: 500; color: var(--text); font-size: 14px; }
.brand-port { font-family: var(--mono); color: var(--text-3); font-size: 13px; }
.head-spacer { flex: 1; }
.mode-switch { display: flex; background: var(--bg0); border: 1px solid var(--border); border-radius: 8px; padding: 3px; }
.mode-switch button {
  border: 0; background: none; color: var(--text-2); font: inherit; font-size: 13px; padding: 5px 12px; border-radius: 6px; cursor: pointer; white-space: nowrap;
}
.mode-switch button[aria-selected="true"] { background: var(--bg3); color: var(--text); font-weight: 500; }
.clock { display: flex; align-items: center; gap: 6px; }
.clock-time { font-family: var(--mono); font-size: 13px; color: var(--text); min-width: 64px; }
.speed, .sel {
  background: var(--bg2); color: var(--text); border: 1px solid var(--border-2); border-radius: 6px;
  font: inherit; font-size: 13px; padding: 4px 6px;
}
.sel { width: 100%; }
.sel-sm { width: auto; font-size: 12px; padding: 2px 4px; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px;
  background: none; border: 1px solid transparent; border-radius: 6px; color: var(--text-2); cursor: pointer;
}
.icon-btn:hover { background: var(--bg3); color: var(--text); }
.config-toggle { display: none; }

/* ---------- buttons & fields ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 32px; padding: 0 12px;
  border-radius: 6px; border: 1px solid var(--border-2); background: var(--bg2); color: var(--text);
  font: inherit; font-size: 13px; font-weight: 500; cursor: pointer; white-space: nowrap;
}
.btn:hover { background: var(--bg3); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: #4ade9f; }
.btn-long { border-color: #6b4d8f; color: #e2c8ff; }
.btn-ghost { background: none; }
.btn-block { width: 100%; margin: 6px 0 10px; }
.btn-xs { height: 24px; padding: 0 8px; font-size: 12px; font-weight: 500; }
.btn-danger { border-color: #7f2d2d; color: #fecaca; }
.btn-warn { border-color: #7a5a13; color: #fde68a; }
.btn-ok { border-color: #1f6b4f; color: #bbf7d0; }

.field { display: flex; flex-direction: column; gap: 4px; margin: 8px 0; font-size: 12.5px; color: var(--text-2); }
.field input[type=number] {
  background: var(--bg2); color: var(--text); border: 1px solid var(--border-2); border-radius: 6px;
  font: inherit; font-family: var(--mono); font-size: 13px; padding: 5px 8px; width: 100%;
}
.field-inline { flex-direction: row; align-items: center; justify-content: space-between; }
.field-inline input[type=number] { width: 96px; }
.check { display: flex; gap: 8px; align-items: flex-start; margin: 8px 0; font-size: 13px; cursor: pointer; }
.check input { margin-top: 3px; accent-color: var(--accent); }
.check .hint { display: block; }
.check-inline { margin: 0; align-items: center; }
.check-inline input { margin-top: 0; }

/* ---------- layout ---------- */
.layout { display: flex; padding-top: calc(var(--demo-h) + var(--head-h)); min-height: 100vh; }
.config {
  position: fixed; top: calc(var(--demo-h) + var(--head-h)); bottom: 0; left: 0; width: var(--cfg-w); z-index: 40;
  background: var(--bg1); border-right: 1px solid var(--border); overflow-y: auto;
}
.config-inner { padding: 4px 16px 24px; }
.cfg-sec { border-bottom: 1px solid var(--border); padding: 12px 0; }
.cfg-h { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-2); margin: 0 0 8px; font-weight: 600; }
.cfg-sub { text-transform: none; letter-spacing: 0; color: var(--text-3); font-weight: 400; margin-left: 4px; }
.cfg-row-h { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 8px; }
.cfg-row-h .cfg-h { margin: 0; white-space: nowrap; }
.cfg-row-h .sel-sm { max-width: 150px; }
.cfg-foot { font-size: 12px; color: var(--text-3); margin: 12px 0 0; }
.config-scrim { position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 39; }

.strategy-list { display: flex; flex-direction: column; gap: 6px; }
.strat {
  text-align: left; border: 1px solid var(--border-2); background: var(--bg2); color: var(--text); border-radius: 8px;
  padding: 8px 10px; cursor: pointer; font: inherit;
}
.strat:hover { border-color: #4a5468; }
.strat[aria-checked="true"] { border-color: var(--accent); background: #0f2a20; }
.strat-file { font-family: var(--mono); font-size: 12.5px; font-weight: 500; display: block; }
.strat-desc { font-size: 12px; color: var(--text-2); }

.gpu-cfg { border: 1px solid var(--border); background: var(--bg2); border-radius: 8px; padding: 8px 10px; margin-bottom: 8px; }
.gpu-cfg-top { display: flex; align-items: center; gap: 8px; }
.gpu-cfg-name { font-family: var(--mono); font-size: 12.5px; font-weight: 500; color: var(--text); white-space: nowrap; }
.gpu-cfg-top .sel { flex: 1; min-width: 0; font-size: 12.5px; padding: 3px 4px; }
.gpu-cfg-models { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.chip-toggle {
  border: 1px solid var(--border-2); background: transparent; color: var(--text-3); border-radius: 999px;
  font-family: var(--mono); font-size: 11px; padding: 2px 8px; cursor: pointer;
}
.chip-toggle[aria-pressed="true"] { border-color: #2e6b55; background: #0f2a20; color: #a7f3d0; }
.gpu-cfg-meta { font-size: 11.5px; color: var(--text-3); margin-top: 4px; font-family: var(--mono); }
.icon-x { width: 24px; height: 24px; border-radius: 4px; border: 0; background: none; color: var(--text-3); cursor: pointer; font-size: 16px; line-height: 1; }
.icon-x:hover:not(:disabled) { background: var(--bg3); color: var(--err); }
.icon-x:disabled { opacity: 0.3; cursor: default; }

.main { flex: 1; margin-left: var(--cfg-w); padding: 16px 20px 40px; min-width: 0; }

/* ---------- traffic ---------- */
.traffic { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.traffic-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.traffic-steady { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-2); }
.traffic-steady input { width: 180px; accent-color: var(--accent); }
.traffic-steady output { min-width: 76px; color: var(--text); }

/* ---------- flow ---------- */
.flow-card { background: var(--bg1); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.flow-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 8px 12px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.flow-title { font-family: var(--mono); font-size: 12.5px; color: var(--text-2); }
.flow-legend { display: flex; gap: 12px; font-size: 12px; color: var(--text-2); flex-wrap: wrap; }
.flow-legend span { display: inline-flex; align-items: center; gap: 5px; }
.lg { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.lg-chat { background: var(--chat); } .lg-long { background: var(--long); } .lg-ok { background: var(--ok); }
.lg-429 { background: var(--warn); } .lg-5xx { background: var(--err); }
.flow { display: block; width: 100%; height: 360px; }

/* ---------- KPIs ---------- */
.kpis { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 8px; margin: 12px 0; }
.kpi { background: var(--bg1); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 10px; min-width: 0; }
.kpi-label { font-size: 11px; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.05em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kpi-val { font-family: var(--mono); font-size: 20px; font-weight: 500; margin-top: 2px; white-space: nowrap; }
.kpi-val small { font-size: 12px; color: var(--text-3); margin-left: 2px; }
.kpi--ok .kpi-val { color: var(--ok); } .kpi--warn .kpi-val { color: var(--warn); } .kpi--err .kpi-val { color: var(--err); }
.kpi--zero .kpi-val { color: var(--text-3); }

/* ---------- GPU cards ---------- */
.gpu-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 10px; margin-bottom: 12px; }
.gpu { background: var(--bg1); border: 1px solid var(--border); border-radius: var(--radius); padding: 10px 12px; }
.gpu.is-down { border-color: #6b2a2a; }
.gpu.is-hang { border-color: #6d5414; }
.gpu-top { display: flex; align-items: center; gap: 8px; }
.gpu-name { font-family: var(--mono); font-weight: 500; }
.gpu-preset { color: var(--text-2); font-size: 12.5px; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pill { font-size: 10.5px; font-weight: 600; letter-spacing: 0.04em; padding: 2px 7px; border-radius: 999px; font-family: var(--mono); white-space: nowrap; }
.pill-up { background: #0f2a20; color: #6ee7b7; }
.pill-down { background: #3a1416; color: #fca5a5; }
.pill-hang { background: #3a2c09; color: #fcd34d; }
.pill-muted { background: var(--bg3); color: var(--text-2); }
.gpu-sched { font-size: 12px; color: var(--text-2); margin-top: 6px; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.gpu-row { display: grid; grid-template-columns: 92px 1fr auto; align-items: center; gap: 8px; font-size: 12px; margin-top: 7px; color: var(--text-2); }
.gpu-row b { font-family: var(--mono); font-weight: 500; color: var(--text); font-size: 12px; white-space: nowrap; }
.bar { height: 8px; background: var(--bg3); border-radius: 4px; overflow: hidden; display: flex; }
.bar i { display: block; height: 100%; }
.bar .b-util { background: var(--accent); }
.bar .b-w { background: #3b82f6; }
.bar .b-kv { background: var(--long); }
.bar.spill { box-shadow: 0 0 0 1px var(--err); }
.gpu-models { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.mchip { font-family: var(--mono); font-size: 11px; padding: 1px 7px; border-radius: 4px; background: #13233d; color: #bfdbfe; }
.mchip.loading { background: #3a2c09; color: #fde68a; }
.mchip.none { background: transparent; color: var(--text-3); padding-left: 0; }
.gpu-actions { display: flex; gap: 6px; margin-top: 10px; }
.leak { color: var(--warn); font-family: var(--mono); }

/* ---------- tabs ---------- */
.tabs-card { background: var(--bg1); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); padding: 0 8px; overflow-x: auto; }
.tab {
  border: 0; background: none; color: var(--text-2); font: inherit; font-size: 13px; padding: 10px 12px; cursor: pointer;
  border-bottom: 2px solid transparent; white-space: nowrap;
}
.tab[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }
.tab-panel { padding: 12px; }
.log-tools { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; font-size: 12.5px; }
.table-wrap { overflow: auto; max-height: 360px; }
.rlog { width: 100%; border-collapse: collapse; font-size: 12.5px; }
.rlog th { position: sticky; top: 0; background: var(--bg2); text-align: left; font-weight: 500; color: var(--text-2); padding: 6px 8px; white-space: nowrap; font-size: 12px; }
.rlog td { padding: 5px 8px; border-top: 1px solid var(--border); white-space: nowrap; font-family: var(--mono); font-size: 12px; }
.rlog .num { text-align: right; }
.rlog td.hdrs { color: var(--text-2); font-size: 11.5px; }
.code { font-weight: 600; }
.code-200 { color: var(--ok); } .code-429 { color: var(--warn); } .code-502, .code-503 { color: var(--err); }
.code-pending { color: var(--text-3); font-weight: 400; }
.kind-long { color: var(--long); }
.route-fb { color: var(--warn); }

.console {
  margin: 0; background: #07090c; border: 1px solid var(--border); border-radius: 6px; padding: 10px 12px;
  font-family: var(--mono); font-variant-ligatures: none; font-size: 12px; line-height: 1.55; height: 360px; overflow: auto; white-space: pre; color: #cbd5e1;
}
.console .warn { color: var(--warn); } .console .err { color: var(--err); } .console .dim { color: var(--text-3); }

.snip-h { font-size: 12.5px; color: var(--text-2); margin: 14px 0 6px; display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.snip-h:first-child { margin-top: 0; }
.snip {
  margin: 0; background: #07090c; border: 1px solid var(--border); border-radius: 6px; padding: 10px 12px;
  font-family: var(--mono); font-size: 12px; line-height: 1.55; overflow-x: auto; white-space: pre; color: #cbd5e1;
}
.snip .ln { color: var(--text-3); user-select: none; display: inline-block; width: 3.2em; }
.snip .kw { color: #c084fc; } .snip .str { color: #86efac; } .snip .cm { color: var(--text-3); }
.oneline { background: var(--bg2); border-left: 3px solid var(--accent); padding: 8px 12px; border-radius: 4px; font-size: 13px; margin: 0 0 12px; }

.notes { font-size: 13.5px; max-width: 920px; }
.notes h3 { font-size: 13px; margin: 16px 0 6px; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.05em; }
.notes h3:first-child { margin-top: 0; }
.notes ol, .notes ul { margin: 0; padding-left: 20px; }
.notes li { margin-bottom: 8px; }
.notes .tag { font-family: var(--mono); font-size: 11px; padding: 1px 6px; border-radius: 4px; background: var(--bg3); color: var(--text-2); margin-left: 4px; }

/* ---------- compare ---------- */
.cmp-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.cmp-title { font-size: 20px; margin: 0; font-weight: 600; }
.cmp-sub { margin: 4px 0 0; font-size: 13px; }
.cmp-controls { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.cmp-controls .field { margin: 0; min-width: 0; }
.cmp-controls .sel { min-width: 260px; max-width: 100%; }
.field-seed input { width: 90px !important; }
.cmp-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.cmp-card { background: var(--bg1); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; min-width: 0; }
.cmp-card h3 { font-family: var(--mono); font-size: 13px; margin: 0; font-weight: 500; }
.cmp-card .cmp-desc { font-size: 12px; color: var(--text-2); margin: 2px 0 10px; }
.cmp-big { display: flex; gap: 16px; margin-bottom: 10px; flex-wrap: wrap; }
.cmp-big div { font-size: 11px; color: var(--text-2); text-transform: uppercase; letter-spacing: 0.04em; }
.cmp-big b { display: block; font-family: var(--mono); font-size: 20px; font-weight: 500; color: var(--text); text-transform: none; letter-spacing: 0; }
.cmp-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 12px; }
.cmp-table th, .cmp-table td { padding: 7px 10px; border-top: 1px solid var(--border); text-align: right; white-space: nowrap; }
.cmp-table th:first-child, .cmp-table td:first-child { text-align: left; color: var(--text-2); font-weight: 400; }
.cmp-table thead th { font-family: var(--mono); font-weight: 500; font-size: 12.5px; color: var(--text); border-top: 0; }
.cmp-table td { font-family: var(--mono); font-size: 12.5px; }
.cmp-table td.best { color: var(--ok); font-weight: 600; }
.cmp-section { background: var(--bg1); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; margin-top: 12px; overflow-x: auto; }
.cmp-section h2 { font-size: 13px; margin: 0 0 4px; font-weight: 600; }
.cmp-section p { margin: 0 0 8px; font-size: 12.5px; color: var(--text-2); }
.cmp-empty { color: var(--text-2); padding: 40px; text-align: center; border: 1px dashed var(--border-2); border-radius: var(--radius); }
.chart-svg { display: block; width: 100%; height: auto; }
.chart-svg text { fill: var(--text-2); font-family: var(--mono); font-size: 11px; }
.status-bar { display: flex; height: 14px; border-radius: 3px; overflow: hidden; background: var(--bg3); margin: 4px 0 2px; }
.status-bar i { display: block; height: 100%; }
.status-legend { display: flex; gap: 10px; font-size: 11.5px; color: var(--text-2); flex-wrap: wrap; }
.verdict { font-size: 13px; background: var(--bg2); border-left: 3px solid var(--accent); padding: 8px 12px; border-radius: 4px; margin-top: 12px; }

/* ---------- tour & toasts ---------- */
.tour {
  position: fixed; right: 16px; top: calc(var(--demo-h) + 8px); width: 340px; max-width: calc(100vw - 32px); z-index: 80;
  background: var(--bg2); border: 1px solid var(--border-2); border-radius: 10px; padding: 14px 16px; box-shadow: 0 12px 40px rgba(0,0,0,.5);
}
.tour-step { font-size: 11px; color: var(--accent); }
.tour-title { font-size: 15px; margin: 4px 0 6px; }
.tour-text { font-size: 13px; color: var(--text-2); margin: 0 0 12px; }
.tour-actions { display: flex; justify-content: flex-end; gap: 8px; }
.toasts { position: fixed; bottom: 16px; right: 16px; z-index: 70; display: flex; flex-direction: column; gap: 6px; max-width: calc(100vw - 32px); }
.toast { background: var(--bg2); border: 1px solid var(--border-2); border-left: 3px solid var(--accent); border-radius: 6px; padding: 8px 12px; font-size: 13px; box-shadow: 0 8px 24px rgba(0,0,0,.4); }
.toast.warn { border-left-color: var(--warn); } .toast.err { border-left-color: var(--err); }

/* ---------- responsive ---------- */
@media (max-width: 1280px) { .kpis { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 1100px) {
  .config { transform: translateX(-100%); transition: transform .2s; box-shadow: 8px 0 24px rgba(0,0,0,.4); }
  .config.open { transform: none; }
  .config-toggle { display: inline-flex; }
  .main { margin-left: 0; }
  .cmp-grid { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .hide-sm { display: none; }
  .app-head { gap: 8px; padding: 0 10px; }
  .brand-name, .brand-port { display: none; }
  .mode-switch button { padding: 5px 8px; font-size: 12px; }
  .main { padding: 12px 12px 32px; }
  .flow { height: 300px; }
  .traffic-steady { width: 100%; }
  .traffic-steady input { flex: 1; width: auto; min-width: 0; }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cmp-controls .sel { min-width: 0; }
  .cmp-controls .field:first-child { flex: 1 1 100%; }
}
@media (max-width: 420px) {
  .hide-xs { display: none; }
  .brand { display: none; }
  .clock .speed { padding: 3px 2px; }
  .clock-time { min-width: 0; font-size: 12px; }
  .traffic-btns .btn { flex: 1 1 auto; padding: 0 8px; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}