:root {
  --bg: #0f1419; --panel: #1a2129; --line: #2a3441;
  --text: #e6edf3; --muted: #8b98a5; --accent: #2f81f7;
  --green: #2ea043; --red: #f85149; --yellow: #d29922;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}
header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 22px; border-bottom: 1px solid var(--line); background: var(--panel);
}
header h1 { font-size: 20px; margin: 0; }
.muted { color: var(--muted); font-weight: 400; }
.header-right { display: flex; gap: 12px; align-items: center; }

.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; padding: 18px 22px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.card-label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.card-value { font-size: 24px; font-weight: 700; margin-top: 6px; }

.tabs { display: flex; gap: 6px; padding: 0 22px; border-bottom: 1px solid var(--line); }
.tab { background: none; border: none; color: var(--muted); padding: 12px 16px;
  cursor: pointer; font-size: 14px; border-bottom: 2px solid transparent; }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

.tab-panel { display: none; padding: 22px; }
.tab-panel.active { display: block; }

table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th, table.data td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); }
table.data th { color: var(--muted); font-weight: 600; font-size: 11px; text-transform: uppercase; }
table.data tbody tr:hover { background: #11171d; }

.form { max-width: 820px; background: var(--panel); border: 1px solid var(--line);
  border-radius: 10px; padding: 20px; }
.row { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 14px; }
.form label { display: flex; flex-direction: column; gap: 5px; font-size: 12px;
  color: var(--muted); flex: 1; min-width: 140px; }
.form input, .form select {
  background: var(--bg); border: 1px solid var(--line); color: var(--text);
  border-radius: 7px; padding: 9px 10px; font-size: 14px;
}
details.live-only { margin: 8px 0 16px; color: var(--muted); }
details.live-only summary { cursor: pointer; padding: 8px 0; }

.btn { background: #21262d; border: 1px solid var(--line); color: var(--text);
  padding: 9px 16px; border-radius: 7px; cursor: pointer; font-size: 14px; }
.btn:hover { border-color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-danger { background: transparent; border-color: var(--red); color: var(--red); }
.btn-danger.on { background: var(--red); color: #fff; }
.btn-sm { padding: 4px 9px; font-size: 12px; }

.pill { padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.pill-off { background: rgba(139,152,165,.15); color: var(--muted); }
.pill-on { background: rgba(248,81,73,.18); color: var(--red); }
.pill-ok { background: rgba(46,160,67,.18); color: var(--green); }

.msg { margin-top: 12px; font-size: 13px; min-height: 18px; }

.banner { margin: 0 22px 8px; padding: 10px 14px; border-radius: 8px; font-size: 13px;
  background: rgba(210,153,34,.12); border: 1px solid rgba(210,153,34,.4); color: var(--yellow); }
.banner.ok { background: rgba(46,160,67,.12); border-color: rgba(46,160,67,.4); color: var(--green); }

.dropdown { position: absolute; top: 100%; left: 0; right: 0; z-index: 30;
  background: #0d1117; border: 1px solid var(--line); border-radius: 8px; margin-top: 4px;
  max-height: 280px; overflow-y: auto; display: none; }
.dropdown.show { display: block; }
.dropdown .item { padding: 9px 12px; cursor: pointer; border-bottom: 1px solid var(--line); }
.dropdown .item:hover { background: #1a2129; }
.dropdown .item .sym { color: var(--text); font-size: 14px; }
.dropdown .item .meta { color: var(--muted); font-size: 11px; margin-top: 2px; }
.selected-symbol { margin: 0 0 14px; padding: 9px 12px; border-radius: 8px;
  background: rgba(47,129,247,.1); border: 1px solid rgba(47,129,247,.3);
  color: var(--text); font-size: 13px; }

/* segment tabs */
.seg-tabs { display: flex; gap: 6px; margin-bottom: 14px; }
.seg { background: #21262d; border: 1px solid var(--line); color: var(--muted);
  padding: 8px 16px; border-radius: 7px; cursor: pointer; font-size: 13px; }
.seg.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* option chain */
.chain-wrap { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; margin-bottom: 14px; }
.chain-head { display: grid; grid-template-columns: 1fr 120px 1fr; background: #11171d;
  color: var(--muted); font-size: 11px; font-weight: 600; text-transform: uppercase; }
.chain-head span { padding: 8px 12px; text-align: center; }
.chain-head span:first-child { text-align: right; color: var(--green); }
.chain-head span:last-child { text-align: left; color: var(--red); }
.chain-body { max-height: 360px; overflow-y: auto; }
.chain-row { display: grid; grid-template-columns: 1fr 120px 1fr; border-top: 1px solid var(--line); }
.chain-cell { padding: 8px 12px; cursor: pointer; font-size: 13px; }
.chain-cell.ce { text-align: right; }
.chain-cell.pe { text-align: left; }
.chain-cell:hover { background: #1a2129; }
.chain-cell.ce:hover { background: rgba(46,160,67,.12); }
.chain-cell.pe:hover { background: rgba(248,81,73,.12); }
.chain-cell.ce.itm { background: rgba(46,160,67,.13); }   /* in-the-money calls */
.chain-cell.pe.itm { background: rgba(248,81,73,.13); }   /* in-the-money puts  */
.chain-row.atm { outline: 1px solid rgba(210,153,34,.7); outline-offset: -1px;
  background: rgba(210,153,34,.10); }
.atm-badge { display: inline-block; margin-left: 6px; font-size: 9px; font-weight: 700;
  background: var(--yellow); color: #000; padding: 1px 5px; border-radius: 4px; vertical-align: middle; }
.chain-cell.sel { background: var(--accent) !important; color: #fff; }
.chain-legend { font-size: 11px; color: var(--muted); padding: 6px 12px; }
.chain-legend b { color: var(--text); font-weight: 600; }
.chain-cell .ltp { color: var(--text); font-weight: 600; }
.chain-cell .ltp.dim { color: var(--muted); font-weight: 400; }
.chain-strike { padding: 8px 12px; text-align: center; font-weight: 600;
  background: #0d1117; color: var(--text); font-size: 13px; }

/* order-form controls */
.field { margin-bottom: 14px; }
.field-label { font-size: 12px; color: var(--muted); margin-bottom: 5px; }
.btn-group { display: inline-flex; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.btn-group .opt { background: var(--bg); border: none; color: var(--muted);
  padding: 9px 22px; cursor: pointer; font-size: 14px; font-weight: 600; }
.btn-group .opt + .opt { border-left: 1px solid var(--line); }
.btn-group .opt.active { background: var(--accent); color: #fff; }
.btn-group .opt.buy.active { background: var(--green); }
.btn-group .opt.sell.active { background: var(--red); }
.stepper { display: inline-flex; align-items: stretch; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.stepper input { width: 70px; text-align: center; border: none; background: var(--bg);
  color: var(--text); font-size: 15px; }
.stepper input::-webkit-outer-spin-button, .stepper input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.step { background: #21262d; border: none; color: var(--text); width: 38px; font-size: 18px; cursor: pointer; }
.step:hover { background: var(--accent); color: #fff; }
.check { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text); }
.check input { width: auto; }
.trow { display: flex; gap: 8px; margin-bottom: 8px; align-items: center; }
.trow input { background: var(--bg); border: 1px solid var(--line); color: var(--text);
  border-radius: 7px; padding: 8px 10px; width: 110px; font-size: 14px; }
.trow .trm { width: 32px; }
.autolegs { background: #11171d; border: 1px solid var(--line); border-radius: 8px;
  padding: 10px 12px; margin-bottom: 10px; font-size: 13px; color: var(--text); }
.autolegs input { background: var(--bg); border: 1px solid var(--line); color: var(--text);
  border-radius: 6px; padding: 6px 8px; font-size: 13px; }

/* demo control bar */
.demo-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: rgba(46,160,67,.08); border: 1px solid rgba(46,160,67,.3);
  border-radius: 8px; padding: 10px 14px; margin-bottom: 14px; }
.demo-bar .btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* exit-reason badges */
.rbadge { padding: 2px 8px; border-radius: 5px; font-size: 11px; font-weight: 700; }
.r-TARGET { background: rgba(46,160,67,.22); color: var(--green); }
.r-TRAIL { background: rgba(47,129,247,.22); color: var(--accent); }
.r-STOPLOSS { background: rgba(248,81,73,.22); color: var(--red); }
.r-KILL { background: rgba(248,81,73,.3); color: #fff; }
.r-MANUAL { background: rgba(139,152,165,.22); color: var(--muted); }
.r-ENTRY_FAILED { background: rgba(248,81,73,.22); color: var(--red); }

/* logs */
.logs-bar { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; flex-wrap: wrap; }
.logs-bar select { background: var(--bg); border: 1px solid var(--line); color: var(--text);
  border-radius: 7px; padding: 7px 9px; font-size: 13px; }
.lvl { padding: 2px 8px; border-radius: 5px; font-size: 11px; font-weight: 600; }
.lvl-INFO { background: rgba(139,152,165,.18); color: var(--muted); }
.lvl-WARN { background: rgba(210,153,34,.2); color: var(--yellow); }
.lvl-ERROR { background: rgba(248,81,73,.2); color: var(--red); }

/* modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.6);
  display: flex; align-items: center; justify-content: center; z-index: 100; }
.modal { background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
  padding: 22px; width: 420px; max-width: 92vw; }

/* futures list */
.fut-wrap { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.fut-btn { background: #21262d; border: 1px solid var(--line); color: var(--text);
  padding: 10px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; }
.fut-btn:hover { border-color: var(--accent); }
.fut-btn.sel { background: var(--accent); border-color: var(--accent); color: #fff; }
.pos { color: var(--green); } .neg { color: var(--red); }
.badge { padding: 2px 8px; border-radius: 5px; font-size: 11px; font-weight: 600; }
.b-PENDING { background: rgba(210,153,34,.18); color: var(--yellow); }
.b-OPEN { background: rgba(47,129,247,.18); color: var(--accent); }
.b-CLOSED { background: rgba(139,152,165,.18); color: var(--muted); }
.b-CANCELLED { background: rgba(248,81,73,.15); color: var(--red); }
.b-TEST { background: rgba(46,160,67,.15); color: var(--green); }
.b-LIVE { background: rgba(248,81,73,.18); color: var(--red); }

@media (max-width: 720px) { .cards { grid-template-columns: repeat(2,1fr); } }