:root {
  --bg: #0f1216; --panel: #171b21; --panel2: #1d222a; --line: #2a313b; --text: #e6e9ee;
  --muted: #8b95a3; --long: #1fbf75; --long-bg: rgba(31,191,117,.14); --short: #f0475b;
  --short-bg: rgba(240,71,91,.14); --warn: #f2b33d; --warn-bg: rgba(242,179,61,.12);
  --accent: #4c8dff; --radius: 12px;
  --safe-top: env(safe-area-inset-top, 0px); --safe-bottom: env(safe-area-inset-bottom, 0px);
  font-family: -apple-system, "Segoe UI", system-ui, Roboto, sans-serif;
  color-scheme: dark;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; }
body { min-height: 100vh; overscroll-behavior-y: contain; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.pos { color: var(--long); } .neg { color: var(--short); }
h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .6px; color: var(--muted); margin: 18px 2px 10px; font-weight: 600; }
h3 { font-size: 14px; margin: 16px 2px 8px; font-weight: 600; }
.card h3, .pvcard h3 { margin: 0; }

/* ----- đăng nhập */
.login { max-width: 420px; margin: 0 auto; padding: calc(40px + var(--safe-top)) 20px 40px; }
.logo { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.logo img { width: 52px; height: 52px; border-radius: 12px; }
.logo h1 { margin: 0; font-size: 26px; }

/* ----- khung */
header.top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 10px;
  padding: calc(10px + var(--safe-top)) 16px 10px; background: rgba(15,18,22,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line); }
main { padding: 4px 14px calc(90px + var(--safe-bottom)); max-width: 640px; margin: 0 auto; }
.spacer { flex: 1; }
.badge { font-size: 11px; font-weight: 700; padding: 3px 8px; border-radius: 6px; letter-spacing: .5px; }
.badge.demo { background: var(--warn-bg); color: var(--warn); }
.badge.live { background: var(--short-bg); color: var(--short); }
.status { color: var(--muted); font-size: 13px; display: flex; align-items: center; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; background: var(--muted); }
.icon-btn { background: none; border: 0; color: var(--muted); padding: 6px; }

nav.tabs { position: fixed; left: 0; right: 0; bottom: 0; z-index: 6; display: flex; background: rgba(23,27,33,.96);
  backdrop-filter: blur(10px); border-top: 1px solid var(--line); padding-bottom: var(--safe-bottom); }
nav.tabs button { flex: 1; background: none; border: 0; color: var(--muted); padding: 8px 0 7px; display: flex;
  flex-direction: column; align-items: center; gap: 2px; font-size: 11px; font-family: inherit; position: relative; }
nav.tabs svg { width: 24px; height: 24px; }
nav.tabs button.on { color: var(--accent); }
.badge-n { position: absolute; top: 3px; left: calc(50% + 6px); min-width: 17px; height: 17px; border-radius: 9px;
  background: var(--short); color: #fff; font-size: 10.5px; font-style: normal; font-weight: 700; line-height: 17px; padding: 0 4px; }

/* ----- thẻ */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin-bottom: 10px; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.stats .card { margin: 0; }
.stat .lbl, .lockcard .lbl { color: var(--muted); font-size: 12px; }
.stat .val { font-size: 19px; font-weight: 650; font-variant-numeric: tabular-nums; margin-top: 3px; }
.meter { height: 6px; background: var(--panel2); border-radius: 3px; margin-top: 8px; overflow: hidden; }
.stat .sub { color: var(--muted); font-size: 11.5px; margin-top: 6px; line-height: 1.35; }
.meter > i { display: block; height: 100%; background: var(--short); width: 0; }
.lockcard { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; }
.lockcard b { font-size: 15px; }

.item { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 10px; }
.item .head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.item .sym { font-weight: 700; font-size: 16px; }
.item .right { margin-left: auto; font-weight: 650; font-variant-numeric: tabular-nums; }
.kvs { display: grid; grid-template-columns: 1fr 1fr; gap: 5px 14px; margin-top: 9px; font-size: 13.5px; font-variant-numeric: tabular-nums; }
.kvs .k { color: var(--muted); }
.kvs div:nth-child(even) { text-align: right; }
.why { color: var(--muted); font-size: 12.5px; margin-top: 8px; line-height: 1.45; }
.tag { font-size: 11px; padding: 2px 7px; border-radius: 5px; font-weight: 700; }
.tag.LONG { background: var(--long-bg); color: var(--long); }
.tag.SHORT { background: var(--short-bg); color: var(--short); }
.tag.ext { background: var(--warn-bg); color: var(--warn); }
.tag.plain { background: var(--panel2); color: var(--muted); }
.score { display: inline-block; min-width: 36px; text-align: center; padding: 3px 7px; border-radius: 6px; font-weight: 700; }
.score.hi { background: var(--long-bg); color: var(--long); }
.score.mid { background: var(--warn-bg); color: var(--warn); }
.score.lo { background: var(--panel2); color: var(--muted); }
.trend.LONG { color: var(--long); } .trend.SHORT { color: var(--short); } .trend.NEUTRAL { color: var(--muted); }
.empty { color: var(--muted); text-align: center; padding: 26px 10px; }

/* ----- form */
label { display: block; color: var(--muted); font-size: 12.5px; margin: 12px 0 5px; }
label.cap { margin-top: 14px; }
input, select { width: 100%; background: var(--panel2); border: 1px solid var(--line); color: var(--text);
  border-radius: 9px; padding: 11px 12px; font-size: 16px; font-family: inherit; font-variant-numeric: tabular-nums; }
input:focus, select:focus { outline: none; border-color: var(--accent); }
.row { display: flex; gap: 8px; } .row input { flex: 1; min-width: 0; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.row-between h2 { margin-bottom: 10px; }
.seg { display: flex; background: var(--panel2); border: 1px solid var(--line); border-radius: 9px; padding: 3px; gap: 3px; }
.seg button { flex: 1; background: transparent; border: 0; color: var(--muted); padding: 9px 8px; border-radius: 7px;
  font-size: 14px; font-weight: 600; font-family: inherit; white-space: nowrap; }
.seg.small button { padding: 6px 10px; font-size: 12.5px; }
.seg button.on { background: var(--line); color: var(--text); }
.seg button.on.long { background: var(--long); color: #06150e; }
.seg button.on.short { background: var(--short); color: #fff; }
.btn { background: var(--panel2); border: 1px solid var(--line); color: var(--text); border-radius: 9px;
  padding: 10px 12px; font-size: 13.5px; font-family: inherit; white-space: nowrap; }
.btn:disabled { opacity: .45; }
.btn.wide { width: 100%; margin-top: 18px; }
.btn.use { padding: 7px 14px; font-weight: 600; border-color: var(--accent); color: var(--accent); }
.chips { display: flex; gap: 6px; margin-top: 7px; flex-wrap: wrap; }
.chips .btn { padding: 5px 9px; font-size: 12.5px; }
.checks label { display: flex; gap: 10px; align-items: flex-start; color: var(--text); font-size: 14px; margin: 9px 0; }
.checks input { width: 20px; height: 20px; margin: 0; flex: none; accent-color: var(--long); }
.big { width: 100%; padding: 15px; font-size: 16px; font-weight: 700; border: 0; border-radius: 11px; font-family: inherit; margin-top: 14px; }
.big.primary { background: var(--accent); color: #fff; }
.submit.long { background: var(--long); color: #06150e; }
.submit.short { background: var(--short); color: #fff; }
.submit:disabled { background: var(--panel2); color: var(--muted); }
.panic { background: transparent; border: 1.5px solid var(--short); color: var(--short); margin-top: 6px; }

.pv { display: grid; grid-template-columns: 1fr auto; gap: 8px 12px; margin-top: 10px; font-variant-numeric: tabular-nums; font-size: 14px; }
.pv .k { color: var(--muted); }
.pv .v { text-align: right; font-weight: 600; }
.pv .lg { font-size: 18px; }
.msgs { margin-top: 12px; display: grid; gap: 8px; }
.msg { padding: 10px 12px; border-radius: 9px; font-size: 13.5px; line-height: 1.4; }
.msg.bad { background: var(--short-bg); color: #ff9aa6; }
.msg.warn { background: var(--warn-bg); color: var(--warn); }
.msg.good { background: var(--long-bg); color: #6fe3a9; }

table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: 13px; }
th, td { text-align: right; padding: 7px 5px; border-bottom: 1px solid var(--line); white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
th { color: var(--muted); font-weight: 500; font-size: 11.5px; }
tr:last-child td { border-bottom: 0; }
.tablewrap { overflow-x: auto; padding: 6px 10px; }
.gate { display: grid; gap: 10px; }
.gate .line { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.gate b { font-variant-numeric: tabular-nums; }

.toast { position: fixed; left: 50%; bottom: calc(80px + var(--safe-bottom)); transform: translateX(-50%); z-index: 20;
  width: max-content; max-width: calc(100% - 28px); padding: 12px 16px; border-radius: 11px; font-weight: 600;
  box-shadow: 0 8px 30px rgba(0,0,0,.5); display: none; font-size: 14px; line-height: 1.4; }
.pvsum { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 8px; margin-top: 12px; padding: 12px 14px;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); font-variant-numeric: tabular-nums; }
.pvsum .k { display: block; color: var(--muted); font-size: 11.5px; margin-bottom: 3px; }
.pvsum b { font-size: 15px; word-break: break-word; }