:root {
  --bg: #0a0d14;
  --bg-grad: radial-gradient(1200px 600px at 80% -10%, rgba(124,131,255,.12), transparent 60%),
             radial-gradient(900px 500px at -10% 110%, rgba(52,195,143,.07), transparent 60%);
  --panel: #10141d;
  --panel-2: #161b27;
  --panel-3: #1c2230;
  --border: #232a39;
  --border-strong: #2f3748;
  --text: #e7eaf2;
  --text-2: #b6bdcc;
  --muted: #828aa0;
  --accent: #7c83ff;
  --accent-soft: rgba(124,131,255,.14);
  --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 12px 32px -18px rgba(0,0,0,.6);

  --k-loop: #6f8dff;
  --k-tool: #34c38f;
  --k-perm: #2cc4d6;
  --k-context: #f2a93b;
  --k-sub: #b48cff;
  --k-agent: #8a92a8;
  --k-stop: #ff8a3d;
  --k-error: #ff5d6e;

  --ok: #34c38f;
  --warn: #f2a93b;
  --bad: #ff5d6e;

  --radius: 14px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

[data-theme="light"] {
  --bg: #f5f6fa;
  --bg-grad: radial-gradient(1200px 600px at 80% -10%, rgba(124,131,255,.10), transparent 60%);
  --panel: #ffffff;
  --panel-2: #f7f8fb;
  --panel-3: #eef0f6;
  --border: #e3e6ee;
  --border-strong: #d3d8e3;
  --text: #151a26;
  --text-2: #3d4557;
  --muted: #6b7386;
  --accent: #5b62f0;
  --accent-soft: rgba(91,98,240,.10);
  --shadow: 0 1px 2px rgba(20,26,40,.04), 0 10px 30px -20px rgba(20,26,40,.25);

  --k-loop: #4a6cf0;
  --k-tool: #16a372;
  --k-perm: #0e9fb3;
  --k-context: #d9860f;
  --k-sub: #8b5cf6;
  --k-agent: #6b7386;
  --k-stop: #ea6a12;
  --k-error: #e23b52;
  --ok: #16a372;
  --warn: #d9860f;
  --bad: #e23b52;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg-grad), var(--bg);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}
code, .mono { font-family: var(--mono); font-size: .92em; }
code { background: var(--panel-3); padding: 1px 5px; border-radius: 5px; color: var(--text-2); }
.muted { color: var(--muted); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font: inherit; color: inherit; cursor: pointer; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  height: 60px; padding: 0 24px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.logo svg { width: 32px; height: 32px; display: block; }
.logo rect { fill: var(--accent); }
.logo path { fill: none; stroke: #fff; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.brand-text { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.brand-text strong { font-size: 15px; letter-spacing: -.01em; }
.brand-text span { font-size: 12px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-right { display: flex; align-items: center; gap: 8px; }
.badge-offline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 5px 11px; border-radius: 999px; font-size: 12px; color: var(--text-2);
  background: var(--panel-2); border: 1px solid var(--border);
}
.badge-offline .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 25%, transparent); }
.icon-btn {
  display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 10px;
  border-radius: 9px; border: 1px solid var(--border); background: var(--panel-2); color: var(--text-2);
}
.icon-btn:hover { border-color: var(--border-strong); color: var(--text); text-decoration: none; }
.icon-btn svg { width: 16px; height: 16px; fill: currentColor; }
.icon-btn.small { width: 32px; height: 30px; justify-content: center; padding: 0; font-size: 18px; line-height: 1; }

/* ---------- layout ---------- */
.layout { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 0; min-height: calc(100vh - 60px); }
.sidebar {
  position: sticky; top: 60px; align-self: start; height: calc(100vh - 60px); overflow: auto;
  padding: 22px 16px; border-right: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 10px;
}
.side-label { font-size: 11px; text-transform: uppercase; letter-spacing: .09em; color: var(--muted); padding: 0 10px 4px; font-weight: 600; }
.scenario-list { display: flex; flex-direction: column; gap: 4px; }
.scn {
  display: block; width: 100%; text-align: left; padding: 10px 12px; border-radius: 11px;
  border: 1px solid transparent; background: transparent;
}
.scn:hover { background: var(--panel-2); }
.scn.active { background: var(--panel); border-color: var(--border-strong); box-shadow: var(--shadow); }
.scn-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.scn-title { font-weight: 600; font-size: 13.5px; color: var(--text); }
.scn-meta { font-size: 12px; color: var(--muted); margin-top: 2px; }
.scn-dot { width: 8px; height: 8px; border-radius: 50%; flex: none; }
.side-card {
  margin-top: auto; padding: 14px; border-radius: 12px; background: var(--panel); border: 1px solid var(--border);
  font-size: 12.5px; color: var(--text-2);
}
.side-card p { margin: 6px 0 0; }
.side-card-title { font-weight: 600; color: var(--text); }
.side-links { margin-top: 10px !important; }

.main { padding: 28px 32px 40px; display: flex; flex-direction: column; gap: 18px; min-width: 0; }

/* ---------- scenario header ---------- */
.scenario-head { display: flex; justify-content: space-between; gap: 24px; align-items: flex-start; }
.eyebrow { display: flex; align-items: center; gap: 10px; font-size: 12px; }
.focus-chip {
  text-transform: uppercase; letter-spacing: .08em; font-weight: 600; font-size: 11px;
  padding: 3px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent);
}
h1 { font-size: 28px; line-height: 1.2; letter-spacing: -.02em; margin: 10px 0 8px; }
.summary { margin: 0; max-width: 760px; color: var(--text-2); font-size: 15px; }
.outcome {
  flex: none; display: flex; flex-direction: column; align-items: flex-end; gap: 6px; text-align: right;
}
.pill {
  display: inline-flex; align-items: center; gap: 7px; padding: 6px 12px; border-radius: 999px;
  font-weight: 600; font-size: 13px; border: 1px solid;
}
.pill svg { width: 14px; height: 14px; }
.pill.ok { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 40%, transparent); background: color-mix(in srgb, var(--ok) 10%, transparent); }
.pill.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); background: color-mix(in srgb, var(--warn) 10%, transparent); }
.pill.bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); background: color-mix(in srgb, var(--bad) 10%, transparent); }
.outcome-sub { font-size: 12px; color: var(--muted); font-family: var(--mono); }

/* ---------- KPIs ---------- */
.kpis { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 12px; }
.kpi {
  padding: 14px 16px; border-radius: 12px; background: var(--panel); border: 1px solid var(--border); box-shadow: var(--shadow);
}
.kpi-label { font-size: 12px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.kpi-label i { width: 8px; height: 8px; border-radius: 2px; display: inline-block; }
.kpi-value { font-size: 24px; font-weight: 650; letter-spacing: -.02em; margin-top: 4px; font-variant-numeric: tabular-nums; }
.kpi-value small { font-size: 13px; font-weight: 500; color: var(--muted); margin-left: 3px; }
.kpi-note { font-size: 11.5px; color: var(--muted); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- cards ---------- */
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 20px; min-width: 0; }
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 12px; }
.card-head h2 { margin: 0; font-size: 15px; letter-spacing: -.01em; }
.card-sub { margin: 3px 0 0; font-size: 12.5px; color: var(--muted); }
.controls { display: flex; gap: 8px; align-items: center; flex: none; }
.segmented { display: inline-flex; padding: 3px; border-radius: 10px; background: var(--panel-3); border: 1px solid var(--border); }
.segmented button { border: 0; background: transparent; padding: 5px 11px; border-radius: 7px; font-size: 12.5px; color: var(--muted); }
.segmented button.active { background: var(--panel); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.25); }
.play-btn {
  display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 13px 0 10px; border-radius: 9px;
  border: 0; background: var(--accent); color: #fff; font-weight: 600; font-size: 12.5px;
}
.play-btn svg { width: 16px; height: 16px; fill: currentColor; }
.play-btn:hover { filter: brightness(1.08); }

.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin: 0 0 8px; font-size: 12px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }

.timeline-wrap { width: 100%; overflow-x: auto; }
.timeline-wrap svg { display: block; }
.lane-label { font-size: 12px; fill: var(--text-2); font-family: var(--mono); }
.lane-parent { font-size: 10.5px; fill: var(--muted); font-family: var(--sans); }
.lane-line { stroke: var(--border-strong); stroke-width: 2; stroke-linecap: round; }
.lane-bg { fill: var(--panel-2); }
.spawn-link { stroke: var(--k-sub); stroke-width: 1.5; stroke-dasharray: 3 4; fill: none; opacity: .7; }
.axis-text { font-size: 11px; fill: var(--muted); font-family: var(--mono); }
.cursor { stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 2 3; }
.ev { cursor: pointer; transition: r .15s ease; }
.ev-halo { fill: none; stroke-width: 2; opacity: 0; }
.ev-g.sel .ev-halo { opacity: 1; }
.ev-g:hover .ev { filter: brightness(1.2); }

/* ---------- split ---------- */
.split { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 18px; align-items: start; }

/* inspector */
.insp-top { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.kind-chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; border-radius: 7px;
  font-size: 12px; font-weight: 600; font-family: var(--mono);
}
.insp-meta { font-size: 12px; color: var(--muted); font-family: var(--mono); }
.insp-sentence { font-size: 15px; margin: 12px 0 12px; color: var(--text); font-weight: 500; }
.insp-detail { font-size: 12.5px; color: var(--text-2); margin: -4px 0 12px; word-break: break-word; }
pre.json {
  margin: 0; padding: 12px 14px; border-radius: 10px; background: var(--panel-2); border: 1px solid var(--border);
  font-family: var(--mono); font-size: 12px; line-height: 1.6; color: var(--text-2); overflow: auto; max-height: 220px;
  white-space: pre-wrap; word-break: break-word;
}
.json .k { color: var(--accent); }
.json .s { color: var(--k-tool); }
.json .n { color: var(--k-context); }
.json .b { color: var(--k-sub); }

.event-list { margin-top: 14px; border-top: 1px solid var(--border); padding-top: 10px; max-height: 280px; overflow: auto; }
.evrow {
  display: grid; grid-template-columns: 60px 12px minmax(0, 1fr); align-items: center; gap: 8px;
  width: 100%; text-align: left; padding: 6px 8px; border-radius: 8px; border: 0; background: transparent;
  font-size: 12.5px; color: var(--text-2);
}
.evrow:hover { background: var(--panel-2); }
.evrow.sel { background: var(--accent-soft); color: var(--text); }
.evrow .t { font-family: var(--mono); font-size: 11.5px; color: var(--muted); text-align: right; }
.evrow i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.evrow .txt { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.evrow .ag { color: var(--muted); font-family: var(--mono); font-size: 11.5px; margin-right: 6px; }

/* context */
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; }
.tab {
  padding: 5px 11px; border-radius: 8px; border: 1px solid var(--border); background: var(--panel-2);
  font-size: 12.5px; font-family: var(--mono); color: var(--muted);
}
.tab.active { color: var(--text); border-color: var(--accent); background: var(--accent-soft); }
.result {
  display: grid; grid-template-columns: auto minmax(0,1fr); gap: 6px 14px; padding: 12px 14px; border-radius: 10px;
  background: var(--panel-2); border: 1px solid var(--border); margin-bottom: 14px; font-size: 12.5px;
}
.result dt { color: var(--muted); }
.result dd { margin: 0; color: var(--text-2); word-break: break-word; }
.budget { display: flex; align-items: center; gap: 10px; margin: 0 0 12px; font-size: 12px; color: var(--muted); }
.budget-bar { flex: 1; height: 8px; border-radius: 99px; background: var(--panel-3); overflow: hidden; display: flex; }
.budget-bar span { display: block; height: 100%; }
.turn { border: 1px solid var(--border); border-radius: 11px; margin-bottom: 10px; overflow: hidden; }
.turn-head {
  display: flex; align-items: center; gap: 8px; padding: 8px 12px; background: var(--panel-2);
  border-bottom: 1px solid var(--border); font-size: 12px;
}
.turn-head .n { font-weight: 600; color: var(--text); }
.flag { font-size: 11px; padding: 1px 7px; border-radius: 6px; font-weight: 600; }
.flag.pinned { color: var(--accent); background: var(--accent-soft); }
.flag.summary { color: var(--k-context); background: color-mix(in srgb, var(--k-context) 14%, transparent); }
.flag.placeholder { color: var(--k-perm); background: color-mix(in srgb, var(--k-perm) 14%, transparent); }
.turn-tokens { margin-left: auto; display: flex; align-items: center; gap: 8px; font-family: var(--mono); color: var(--muted); font-size: 11.5px; }
.turn-tokens .bar { width: 80px; height: 5px; border-radius: 9px; background: var(--panel-3); overflow: hidden; }
.turn-tokens .bar span { display: block; height: 100%; background: var(--accent); border-radius: 9px; }
.turn-body { padding: 8px 12px 10px; display: flex; flex-direction: column; gap: 6px; }
.msg { display: grid; grid-template-columns: 74px minmax(0, 1fr); gap: 10px; font-size: 12.5px; align-items: start; }
.msg .role { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); padding-top: 3px; font-weight: 600; }
.msg .content { color: var(--text-2); word-break: break-word; white-space: pre-wrap; }
.msg .content.clamp { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.msg .call { font-family: var(--mono); font-size: 12px; color: var(--text); }
.msg .call b { color: var(--k-tool); font-weight: 500; }
.msg .res { font-family: var(--mono); font-size: 12px; }
.more { border: 0; background: none; color: var(--accent); font-size: 12px; padding: 0; margin-top: 2px; }
.lang-note { margin: 10px 0 0; font-size: 11.5px; color: var(--muted); }

.foot { color: var(--muted); font-size: 12px; padding: 4px 2px; }

.tooltip {
  position: fixed; pointer-events: none; z-index: 50; opacity: 0; transform: translateY(4px);
  transition: opacity .12s, transform .12s; padding: 8px 10px; border-radius: 9px; max-width: 320px;
  background: var(--panel-3); border: 1px solid var(--border-strong); font-size: 12px; color: var(--text); box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.tooltip.show { opacity: 1; transform: none; }
.tooltip .tt-type { font-family: var(--mono); font-size: 11.5px; color: var(--muted); }

/* ---------- responsive ---------- */
@media (max-width: 1280px) {
  .kpis { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 1080px) {
  .split { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 900px) {
  .layout { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--border); padding: 14px 16px; }
  .scenario-list { flex-direction: row; overflow-x: auto; padding-bottom: 4px; }
  .scn { min-width: 220px; }
  .side-card { display: none; }
  .main { padding: 20px 16px 32px; }
  .scenario-head { flex-direction: column; }
  .outcome { align-items: flex-start; text-align: left; }
  .badge-offline, .icon-btn-label, .brand-text span { display: none; }
  .topbar { padding: 0 16px; }
}
@media (max-width: 560px) {
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  h1 { font-size: 23px; }
  .card-head { flex-direction: column; }
  .msg { grid-template-columns: minmax(0, 1fr); gap: 2px; }
}