:root{
  --bg:#f4f6f8; --card:#fff; --rail:#fff; --fg:#111418; --muted:#6b7280; --line:#e4e7eb;
  --sunk:#eef1f4; --ok:#16a34a; --warn:#d97706; --err:#dc2626; --accent:#2563eb;
  --up:#16a34a; --down:#dc2626; --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.04);
}
/* Dark lives in two places on purpose: the media query is the first-visit default, the
   [data-theme] rule is the operator's explicit choice, and a media query cannot host both. */
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0c0e11; --card:#14171c; --rail:#101317; --fg:#e7e9ec; --muted:#8a929d; --line:#232830;
    --sunk:#0f1216; --ok:#22c55e; --warn:#f59e0b; --err:#ef4444; --accent:#5b9dff;
    --up:#22c55e; --down:#ef4444; --shadow:none;
  }
}
:root[data-theme="dark"]{
    --bg:#0c0e11; --card:#14171c; --rail:#101317; --fg:#e7e9ec; --muted:#8a929d; --line:#232830;
    --sunk:#0f1216; --ok:#22c55e; --warn:#f59e0b; --err:#ef4444; --accent:#5b9dff;
    --up:#22c55e; --down:#ef4444; --shadow:none;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);
  font:14px/1.5 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  -webkit-font-smoothing:antialiased}
code{font:12px ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--sunk);
  padding:.05rem .3rem;border-radius:4px}

/* ---------- shell ---------- */
.shell{display:grid;grid-template-columns:232px 1fr;min-height:100vh}
@media (max-width:860px){.shell{grid-template-columns:1fr}.rail{position:static!important;height:auto!important}}

/* ---------- sidebar ---------- */
.rail{background:var(--rail);border-right:1px solid var(--line);display:flex;flex-direction:column;
  position:sticky;top:0;height:100vh;padding:1rem .75rem}
.rail-brand{display:flex;gap:.6rem;align-items:center;padding:.25rem .5rem 1.1rem;
  text-decoration:none;color:inherit}
.logo{width:34px;height:34px;border-radius:9px;background:var(--accent);color:#fff;flex:none;
  display:grid;place-items:center;font-size:.72rem;font-weight:800;letter-spacing:.02em}
.rail-brand b{display:block;font-size:.86rem;line-height:1.2}
.rail-brand .muted{font-size:.7rem}

/* Real links to real routes, so middle-click, bookmark and back all behave. */
nav{display:flex;flex-direction:column;gap:2px}
nav a{display:flex;align-items:center;gap:.6rem;color:var(--muted);padding:.55rem .6rem;
  border-radius:8px;font-size:.86rem;text-decoration:none}
nav a i{font-style:normal;width:1.1em;text-align:center;opacity:.8}
nav a:hover{background:var(--sunk);color:var(--fg)}
nav a.active{background:var(--sunk);color:var(--fg);font-weight:600;
  box-shadow:inset 2px 0 0 var(--accent)}

.rail-foot{margin-top:auto;padding-top:1rem;border-top:1px solid var(--line);display:flex;
  flex-direction:column;gap:.45rem}
.link-mini{display:flex;align-items:center;gap:.45rem;font-size:.76rem}
.link-mini .muted{margin-left:auto;font-size:.7rem}
.rail-modes{display:flex;gap:.3rem;flex-wrap:wrap;margin-top:.3rem}

/* ---------- content ---------- */
.content{min-width:0;display:flex;flex-direction:column}
header{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;
  padding:1rem 1.5rem;border-bottom:1px solid var(--line);background:var(--card);
  position:sticky;top:0;z-index:5}
h1{font-size:1.05rem;margin:0;font-weight:650}
h2{font-size:.72rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin:0}
.card>h2{margin-bottom:.75rem}
.stat-strip{display:flex;gap:1.5rem;margin-left:auto}
.stat label{display:block;font-size:.66rem;text-transform:uppercase;letter-spacing:.06em;
  color:var(--muted)}
.stat b{font-size:.95rem;font-variant-numeric:tabular-nums}

.view{display:grid;gap:1rem;padding:1.25rem 1.5rem;grid-template-columns:repeat(3,1fr);
  align-content:start;flex:1}
@media (max-width:1100px){.view{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:1.1rem;
  min-width:0;box-shadow:var(--shadow)}
.span-3{grid-column:1/-1}
.card-head{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;margin-bottom:.85rem}
.card-head .tabs{margin-left:auto}
.row{display:flex;align-items:center;gap:.5rem;padding:.35rem 0;flex-wrap:wrap}
.muted{color:var(--muted)}
.note{color:var(--muted);font-size:.78rem;margin:.85rem 0 0}
.note.top{margin:0 0 .85rem}
.big{font-size:1.8rem;font-weight:650;font-variant-numeric:tabular-nums;letter-spacing:-.01em}

.dot{width:8px;height:8px;border-radius:50%;background:var(--muted);flex:none}
.dot.up{background:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 20%,transparent)}
.dot.stale{background:var(--warn)}
.dot.down{background:var(--err)}
.pill{font-size:.63rem;font-weight:700;letter-spacing:.05em;padding:.2rem .5rem;border-radius:999px;
  border:1px solid var(--line);color:var(--muted)}
.pill.live{background:var(--err);border-color:var(--err);color:#fff}
.pill.on{background:var(--ok);border-color:var(--ok);color:#fff}
.pill.sim{background:var(--warn);border-color:var(--warn);color:#12151a}
.banner{margin-top:.85rem;padding:.6rem .75rem;border-radius:8px;font-size:.82rem;
  background:color-mix(in srgb,var(--warn) 14%,transparent);border:1px solid var(--warn)}

/* ---------- chart ---------- */
.chart-card{display:flex;flex-direction:column}
#chart{height:360px;width:100%;border-radius:9px;overflow:hidden;background:var(--sunk)}
.tabs{display:flex;gap:2px;background:var(--sunk);padding:.2rem;border-radius:9px}
.tabs button{background:transparent;color:var(--muted);border:0;padding:.28rem .75rem;
  border-radius:7px;font:inherit;font-size:.76rem;font-weight:600;cursor:pointer}
.tabs button.active{background:var(--card);color:var(--fg);box-shadow:var(--shadow)}

.drills{display:flex;gap:.5rem;flex-wrap:wrap}
#drill-result{margin:.85rem 0 0;padding:.65rem .75rem;border-radius:9px;background:var(--sunk);
  max-height:190px;overflow:auto;font:11.5px/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;
  white-space:pre-wrap;word-break:break-all}

/* ---------- tables ---------- */
.tw{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;display:block;
  overflow-x:auto}
th,td{text-align:left;padding:.4rem .6rem;border-bottom:1px solid var(--line);font-size:.8rem;
  white-space:nowrap}
th{color:var(--muted);font-weight:500;font-size:.7rem;text-transform:uppercase;letter-spacing:.05em}
tbody tr:last-child td{border-bottom:0}
td.dirty{color:var(--warn);font-weight:700}
td.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.72rem;color:var(--muted)}
.tag{font-size:.68rem;font-weight:700;padding:.12rem .45rem;border-radius:999px;
  border:1px solid var(--line);color:var(--muted)}
.tag.sent,.tag.acked{color:var(--ok);border-color:var(--ok)}
.tag.rejected,.tag.failed{color:var(--err);border-color:var(--err)}
.tag.buy{color:var(--up);border-color:var(--up)}
.tag.sell{color:var(--down);border-color:var(--down)}

/* ---------- controls ---------- */
button{font:inherit;padding:.45rem .85rem;border-radius:8px;border:1px solid transparent;
  background:var(--accent);color:#fff;cursor:pointer;font-weight:500}
button:hover{filter:brightness(1.08)}
button.secondary{background:transparent;color:var(--fg);border-color:var(--line)}
button.ghost{background:transparent;color:var(--muted);border-color:var(--line);font-size:.78rem;
  padding:.35rem .6rem}
input,select{font:inherit;padding:.4rem .55rem;border-radius:8px;border:1px solid var(--line);
  background:var(--bg);color:var(--fg);min-width:0;width:100%}
input:focus,select:focus{outline:2px solid color-mix(in srgb,var(--accent) 45%,transparent);
  outline-offset:1px;border-color:var(--accent)}
#resync-qty{max-width:110px}
.inline-search{max-width:200px;margin-left:auto;font-size:.8rem}
#log{max-height:none}

#settings{display:grid;gap:.7rem 1.1rem;grid-template-columns:repeat(auto-fill,minmax(210px,1fr))}
#settings label{display:flex;flex-direction:column;gap:.25rem;font-size:.72rem;color:var(--muted)}
#settings .actions{grid-column:1/-1;display:flex;gap:.6rem;align-items:center;margin-top:.6rem;
  padding-top:.9rem;border-top:1px solid var(--line)}

#log{max-height:calc(100vh - 320px);min-height:280px;overflow:auto;
  font:12px/1.6 ui-monospace,SFMono-Regular,Menlo,monospace}
#log div{padding:.2rem .4rem;border-bottom:1px solid var(--line);white-space:pre-wrap;
  word-break:break-word;border-radius:4px}
#log div:hover{background:var(--sunk)}
#log .WARN{color:var(--warn)} #log .ERROR{color:var(--err)}

/* ---------- login ---------- */
.login{min-height:100vh;display:grid;place-items:center;padding:1.5rem}
.login .card{width:min(360px,100%);text-align:center}
.login .logo{margin:0 auto .9rem;width:44px;height:44px;font-size:.8rem}
.login h1{font-size:1rem;margin:0 0 .3rem}
.login form{display:flex;flex-direction:column;gap:.7rem;margin-top:1.1rem}
.login .err{color:var(--err);font-size:.8rem;min-height:1.2em}

/* ---------- theme toggle ---------- */
#theme{width:100%;justify-content:center}

/* ---------- header controls ---------- */
#rail-toggle{font-size:1rem;line-height:1;padding:.3rem .55rem}
button.danger{background:var(--err);color:#fff;font-weight:700;letter-spacing:.05em;font-size:.78rem}

/* Collapsed rail: hidden outright, not shrunk to icons. The header toggle is on every page to
   bring it back, and an icon rail would be a second layout to keep working. */
:root[data-rail="collapsed"] .shell{grid-template-columns:1fr}
:root[data-rail="collapsed"] .rail{display:none}