:root {
  --bg: #f6f7f9; --card: #ffffff; --text: #16181d; --muted: #646b78; --line: #e3e6eb;
  --accent: #2563eb; --pos: #0f8a4a; --neg: #c62828; --warn: #b26a00; --chip: #eef1f5;
  --shadow: 0 1px 2px rgba(0,0,0,.05);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1115; --card: #171a21; --text: #e7e9ee; --muted: #9aa2b1; --line: #2a2f3a;
    --accent: #6ea0ff; --pos: #3ccf83; --neg: #ff6b6b; --warn: #f0b252; --chip: #222733;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); }
body.center { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
main { max-width: 1280px; margin: 0 auto; padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.top { position: sticky; top: 0; z-index: 5; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between;
  padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; display: flex; gap: 8px; align-items: center; }
nav { display: flex; gap: 4px; flex-wrap: wrap; align-items: center; }
nav a, button.link { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 6px; background: none; border: 0; font: inherit; cursor: pointer; }
nav a.on, nav a:hover, button.link:hover { color: var(--text); background: var(--chip); }
nav form { margin: 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; box-shadow: var(--shadow); min-width: 0; }
.card h2 { margin: 0 0 10px; font-size: 15px; }
.card h3 { margin: 14px 0 8px; font-size: 14px; }
.muted { color: var(--muted); margin: 0 0 10px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 14px; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.kpi .l { color: var(--muted); font-size: 12px; }
.kpi .v { font-size: 20px; font-weight: 650; font-variant-numeric: tabular-nums; }
.kpi .s { color: var(--muted); font-size: 12px; }
.pos { color: var(--pos); } .neg { color: var(--neg); } .warnc { color: var(--warn); }
.chart { position: relative; height: 240px; }
.tbl { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); white-space: nowrap; vertical-align: top; }
td.wrap { white-space: normal; min-width: 240px; max-width: 520px; }
th { color: var(--muted); font-weight: 600; font-size: 12px; }
.badge { font-size: 11px; padding: 2px 8px; border-radius: 99px; background: var(--chip); color: var(--muted); font-weight: 600; }
.badge.paper { background: #e6f0ff; color: #1d4ed8; } .badge.testnet { background: #fff4e0; color: #8a5300; }
.badge.live { background: #ffe5e5; color: #b91c1c; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .badge.paper { background:#1d2b4a; color:#9cc0ff }
  :root:not([data-theme="light"]) .badge.testnet { background:#3a2c12; color:#f5c46d } :root:not([data-theme="light"]) .badge.live { background:#3d1717; color:#ff9b9b } }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; background: var(--neg); }
.dot.ok { background: var(--pos); }
button { font: inherit; border-radius: 7px; padding: 7px 12px; border: 1px solid var(--line); background: var(--card); color: var(--text); cursor: pointer; }
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.warn { border-color: var(--warn); color: var(--warn); }
button.danger { background: var(--neg); border-color: var(--neg); color: #fff; }
button.ghost { background: transparent; }
button.sm { padding: 3px 8px; font-size: 12px; }
button:disabled { opacity: .5; cursor: not-allowed; }
.controls { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center; }
.ctl-buttons { display: flex; flex-wrap: wrap; gap: 8px; }
.blocks:empty { display: none; }
.blocks { background: #fff4e0; color: #7a4a00; border: 1px solid #f0c77a; border-radius: 10px; padding: 10px 14px; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .blocks { background:#2c2210; color:#f5c46d; border-color:#5a4520 } }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px 14px; margin-bottom: 10px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
label .hint { font-size: 11px; opacity: .8; }
label.chk { flex-direction: row; align-items: center; gap: 8px; color: var(--text); font-size: 13px; }
input, select, textarea { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 7px; padding: 7px 9px; width: 100%; min-width: 0; }
input[type=checkbox] { width: auto; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.savebar { position: sticky; bottom: 0; display: flex; gap: 8px; padding: 10px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
.estimate { background: var(--chip); border-radius: 8px; padding: 10px 12px; font-size: 13px; }
.login { width: 100%; max-width: 340px; display: flex; flex-direction: column; gap: 12px; }
.login h1 { font-size: 18px; margin: 0 0 4px; }
.err { color: var(--neg); margin: 0; }
.toast { position: fixed; right: 16px; bottom: 16px; max-width: min(420px, calc(100vw - 32px)); background: var(--text); color: var(--bg);
  padding: 10px 14px; border-radius: 8px; z-index: 20; white-space: pre-line; }
.strategy { margin-bottom: 14px; }
.strategy header { display: flex; flex-wrap: wrap; gap: 8px; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.strategy header h3 { margin: 0; }
.rule { display: grid; grid-template-columns: 1.3fr .8fr 1.2fr 1fr 1fr auto; gap: 6px; margin-bottom: 6px; align-items: center; }
.params { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 8px; }
.health-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 6px 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 4px; }
.chip { background: var(--chip); border-radius: 99px; padding: 2px 8px; font-size: 12px; }
@media (max-width: 640px) {
  main { padding: 12px 16px; }
  .rule { grid-template-columns: 1fr 1fr; }
  .kpi .v { font-size: 17px; }
}

/* Histórico de versões das estratégias */
.history { border-top: 1px solid var(--line); margin-top: 12px; padding-top: 8px; }
.hist-row { padding: 8px 0; border-bottom: 1px dashed var(--line); }
.hist-row .row { flex-wrap: wrap; gap: 8px; align-items: center; }
table.diff { width: 100%; margin-top: 6px; font-size: .9em; border-collapse: collapse; }
table.diff td, table.diff th { padding: 3px 6px; text-align: left; border-bottom: 1px solid var(--line); word-break: break-word; }

.chart.sm { height: 200px; }
@media (max-width: 640px) { .chart { height: 220px; } .chart.sm { height: 180px; } }

/* Explicações para iniciantes */
.help { display: inline-grid; place-items: center; width: 16px; height: 16px; margin-left: 5px; padding: 0; border-radius: 50%;
  border: 1px solid var(--line); background: var(--chip); color: var(--muted); font-size: 11px; font-weight: 700; line-height: 1;
  vertical-align: middle; cursor: help; flex: none; }
.help:hover, .help:focus-visible { color: var(--accent); border-color: var(--accent); }
label .help { display: inline-grid; }
.tip { position: fixed; z-index: 30; background: var(--text); color: var(--bg); padding: 9px 12px; border-radius: 8px;
  font-size: 13px; line-height: 1.45; box-shadow: 0 4px 16px rgba(0,0,0,.18); pointer-events: none; }
.explain { margin: 0 0 10px; }
.summary { background: var(--chip); border-radius: 8px; padding: 10px 12px; margin: 0 0 12px; font-size: 14px; }
.intro summary { cursor: pointer; }
.intro ol { margin: 10px 0; padding-left: 20px; display: grid; gap: 4px; }
details.adv summary { cursor: pointer; color: var(--muted); margin: 4px 0 8px; }
.presets { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; }
.preset { display: flex; flex-direction: column; gap: 8px; }
.preset header { display: flex; flex-direction: column; gap: 2px; }
.preset header h3 { margin: 0; font-size: 16px; }
.preset p { margin: 0; }
.preset.on { border-color: var(--accent); }
.preset .row { margin-top: auto; }
ul.plain { margin: 0; padding-left: 18px; display: grid; gap: 4px; }
.fields label.chk { grid-column: 1 / -1; }