:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1c232d;
  --line: #2a3441;
  --text: #e6edf3;
  --muted: #8b98a5;
  --accent: #4fd1c5;      /* teal */
  --accent-2: #7c9cff;    /* indigo */
  --ok: #56d364;
  --warn: #e3b341;
  --bad: #f47067;
  --mem: #c084fc;         /* purple = memory */
  --tool: #7c9cff;        /* indigo = gateway */
  --code: #4fd1c5;        /* teal = code interp */
  --plan: #8b98a5;
  --radius: 12px;
  font-family: -apple-system, "Segoe UI", Roboto, "Noto Sans KR", system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); height: 100vh; display: flex; flex-direction: column; overflow: hidden; }

/* ---- topbar ---- */
.topbar { display: flex; justify-content: space-between; align-items: center; padding: 10px 18px; background: var(--panel); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 12px; }
.brand .dot { width: 12px; height: 12px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
.title { font-weight: 700; font-size: 15px; }
.sub { font-size: 11px; color: var(--muted); }
.controls { display: flex; align-items: center; gap: 10px; }
.chip { background: var(--panel-2); border: 1px solid var(--line); color: var(--text); padding: 6px 11px; border-radius: 999px; font-size: 12px; cursor: default; }
.chip.file { cursor: pointer; }
.chip.file:hover, .chip.danger:hover { border-color: var(--accent); }
.chip.danger { cursor: pointer; color: var(--muted); }

/* ---- toggle ---- */
.toggle { display: flex; align-items: center; gap: 8px; font-size: 12px; cursor: pointer; user-select: none; }
.toggle input { display: none; }
.toggle .track { width: 40px; height: 22px; border-radius: 999px; background: #30363d; position: relative; transition: .2s; }
.toggle .knob { position: absolute; top: 2px; left: 2px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: .2s; }
.toggle input:checked + .track { background: var(--mem); }
.toggle input:checked + .track .knob { left: 20px; }
.toggle-label b { color: var(--mem); }

/* ---- split ---- */
.split { flex: 1; display: grid; grid-template-columns: 1fr 1.05fr; gap: 1px; background: var(--line); min-height: 0; }
.chat-pane, .glass-pane { background: var(--bg); display: flex; flex-direction: column; min-height: 0; }
.glass-pane { background: #0b0e13; padding: 0 14px 14px; overflow-y: auto; }
.pane-head { padding: 12px 16px; font-weight: 600; font-size: 13px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: inherit; z-index: 2; }
.pane-head .muted, .muted { color: var(--muted); font-weight: 400; font-size: 11px; }

/* ---- chat ---- */
.messages { flex: 1; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 14px; }
.msg { max-width: 82%; padding: 11px 14px; border-radius: 14px; font-size: 14px; line-height: 1.5; white-space: pre-wrap; }
.msg.user { align-self: flex-end; background: var(--accent-2); color: #0b0e13; border-bottom-right-radius: 4px; }
.msg.bot { align-self: flex-start; background: var(--panel); border: 1px solid var(--line); border-bottom-left-radius: 4px; }
.msg.bot.thinking { color: var(--muted); font-style: italic; }
.msg.clickable { cursor: pointer; transition: box-shadow .15s, filter .15s; }
.msg.clickable:hover { filter: brightness(1.1); }
.msg.active-turn { box-shadow: 0 0 0 2px var(--accent); }
.msg.user.active-turn { box-shadow: 0 0 0 2px var(--accent-2); }
.msg strong { color: var(--accent); }
.msg.user strong { color: #0b0e13; }
.msg .chart { margin-top: 10px; }

.suggest { display: flex; flex-wrap: wrap; gap: 7px; padding: 8px 16px; }
.suggest button { background: var(--panel-2); border: 1px solid var(--line); color: var(--muted); padding: 6px 11px; border-radius: 999px; font-size: 12px; cursor: pointer; }
.suggest button:hover { color: var(--text); border-color: var(--accent); }

.composer { display: flex; gap: 8px; padding: 14px 16px; border-top: 1px solid var(--line); }
.composer input { flex: 1; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; color: var(--text); font-size: 14px; outline: none; }
.composer input:focus { border-color: var(--accent); }
.composer button { background: var(--accent); color: #0b0e13; border: 0; border-radius: 10px; padding: 0 20px; font-weight: 600; cursor: pointer; }

/* ---- glass box cards ---- */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); margin-top: 14px; overflow: hidden; }
.card-head { padding: 10px 14px; font-size: 12px; font-weight: 600; border-bottom: 1px solid var(--line); color: var(--muted); }
.card-head .mono, .mono { font-family: ui-monospace, "SF Mono", Menlo, monospace; }
.empty { padding: 18px 14px; color: var(--muted); font-size: 12px; }

/* ---- waterfall ---- */
.waterfall { padding: 10px 14px; display: flex; flex-direction: column; gap: 6px; }
.span-row { display: grid; grid-template-columns: 150px 1fr 52px; align-items: center; gap: 10px; font-size: 11px; }
.span-row .lbl { color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.span-row .track { position: relative; height: 14px; background: #0b0e13; border-radius: 4px; }
.span-row .bar { position: absolute; height: 100%; border-radius: 4px; min-width: 3px; opacity: .9; }
.span-row .ms { text-align: right; color: var(--muted); font-variant-numeric: tabular-nums; }
.bar.memory_read, .bar.memory_write { background: var(--mem); }
.bar.plan { background: var(--plan); }
.bar.tool_call { background: var(--tool); }
.bar.code_exec { background: var(--code); }
.bar.answer { background: var(--ok); }
.bar.slow { background: var(--bad) !important; }
.bar.blocked { background: var(--bad) !important; }

/* ---- memory facts ---- */
.facts { padding: 12px 14px; display: flex; flex-direction: column; gap: 8px; }
.fact { display: flex; justify-content: space-between; gap: 10px; font-size: 12px; padding: 7px 10px; background: var(--panel-2); border-radius: 8px; border-left: 3px solid var(--mem); }
.fact .k { color: var(--mem); font-family: ui-monospace, monospace; }
.fact .v { color: var(--text); text-align: right; }
.fact.flash { animation: flash .9s ease; }
@keyframes flash { from { background: var(--mem); color: #0b0e13; } to { background: var(--panel-2); } }

/* ---- activity ---- */
.activity { padding: 12px 14px; display: flex; flex-direction: column; gap: 10px; }
.act { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.act-head { display: flex; align-items: center; gap: 8px; padding: 8px 11px; font-size: 12px; font-weight: 600; }
.act-head .badge { font-size: 10px; padding: 2px 7px; border-radius: 999px; font-weight: 700; }
.badge.ok { background: rgba(86,211,100,.15); color: var(--ok); }
.badge.blocked { background: rgba(244,112,103,.15); color: var(--bad); }
.badge.mem { background: rgba(192,132,252,.15); color: var(--mem); }
.badge.code { background: rgba(79,209,197,.15); color: var(--code); }
.act-body { padding: 0 11px 11px; font-size: 12px; color: var(--muted); }
pre.code { background: #0b0e13; border: 1px solid var(--line); border-radius: 8px; padding: 10px; overflow-x: auto; font-family: ui-monospace, monospace; font-size: 11.5px; color: #cfe3df; line-height: 1.45; margin: 8px 0 0; }
pre.stdout { background: #0b0e13; border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; font-family: ui-monospace, monospace; font-size: 11px; color: var(--muted); margin: 8px 0 0; max-height: 130px; overflow: auto; white-space: pre; }
.kv { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
.kv span { background: var(--panel-2); border-radius: 6px; padding: 2px 7px; font-family: ui-monospace, monospace; font-size: 11px; }

/* ---- svg chart ---- */
.chartbox { background: var(--panel-2); border: 1px solid var(--line); border-radius: 8px; padding: 10px; }
.chartbox .ct { font-size: 11px; color: var(--muted); margin-bottom: 6px; }
svg text { fill: var(--muted); font-size: 9px; }

/* ---- narrow screens: stack the two panes so nothing gets squeezed ---- */
@media (max-width: 900px) {
  body { height: auto; min-height: 100vh; overflow-y: auto; }
  .topbar { flex-wrap: wrap; gap: 8px; }
  .controls { flex-wrap: wrap; }
  .split { grid-template-columns: 1fr; }
  .chat-pane { min-height: 62vh; }
  .glass-pane { min-height: 70vh; padding-bottom: 24px; }
  /* waterfall label column shrinks with the pane instead of clipping */
  .span-row { grid-template-columns: minmax(0, 108px) 1fr 44px; }
  .msg { max-width: 90%; }
}