/* Trading-desk theme: dark slate, amber for the clock, green and red for the book. */
:root {
  --bg: #10161c;
  --bg2: #161f28;
  --panel: #1a242e;
  --line: #2a3844;
  --line2: #35485a;
  --ink: #e8eef4;
  --dim: #8ea2b4;
  --dimmer: #62788c;
  --amber: #e8a33d;
  --green: #3fb98a;
  --green-d: #1f7a57;
  --red: #e05a6b;
  --blue: #5aa9e0;
  --r: 11px;
  --sat: env(safe-area-inset-top, 0px);
  --sab: env(safe-area-inset-bottom, 0px);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html, body { min-height: 100%; background: var(--bg); color: var(--ink); font-family: var(--sans); overscroll-behavior-y: none; }
body { background-image: radial-gradient(ellipse at 50% -10%, #1b2732 0, transparent 55%); }
button { font-family: inherit; color: inherit; background: none; border: none; cursor: pointer; touch-action: manipulation; }
code { font-family: var(--mono); font-size: 0.92em; background: #0d1319; padding: 1px 5px; border-radius: 4px; color: var(--amber); }

.screen { display: none; min-height: 100%; padding: calc(var(--sat) + 16px) 15px calc(var(--sab) + 86px); max-width: 620px; margin: 0 auto; }
.screen.active { display: block; }
.hidden { display: none !important; }

h1 { font-size: 25px; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.09em; color: var(--dim);
     margin: 22px 0 8px; padding-bottom: 5px; border-bottom: 1px solid var(--line); }
h3 { font-size: 16px; font-weight: 700; margin-bottom: 7px; }
p { line-height: 1.55; }
.subtitle { color: var(--dim); font-size: 13px; margin-top: 4px; }
.dim { color: var(--dim); }
.pos { color: var(--green); } .neg { color: var(--red); }
.note, .hint { color: var(--dimmer); font-size: 12px; line-height: 1.5; margin-top: 7px; }
.hint.bad { color: var(--red); }
.empty { color: var(--dim); text-align: center; padding: 50px 0; }

.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 14px; margin: 12px 0; }

/* ---------- home ---------- */
.home-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.badge { font-size: 11.5px; font-weight: 600; border-radius: 999px; padding: 4px 11px; border: 1px solid var(--line2);
         background: var(--bg2); color: var(--dim); white-space: nowrap; }
.badge.ok { background: #12331f; color: #6ede9f; border-color: #1f5c3a; }
.badge.near { background: #3a2e12; color: #f0c070; border-color: #6b551f; }
.badge.no { background: #3a171d; color: #f08a97; border-color: #6b2630; }

.start-btn { display: block; width: 100%; margin: 16px 0 0; padding: 18px 17px; border-radius: var(--r); text-align: left;
  background: linear-gradient(160deg, #1f7a57, #155c41); border: 1px solid #2a9a6e; box-shadow: 0 6px 18px rgba(0,0,0,0.35); }
.start-btn.alt { background: var(--panel); border: 1px solid var(--line2); box-shadow: none; padding: 14px; }
.start-title { display: block; font-size: 20px; font-weight: 700; }
.start-btn.alt .start-title { font-size: 16px; }
.start-desc { display: block; font-size: 12.5px; opacity: 0.82; margin-top: 4px; line-height: 1.45; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
.row2 .start-btn { margin: 0; }
.best-line { color: var(--dim); font-size: 12.5px; margin: 12px 0 2px; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 4px 14px 14px; margin-top: 16px; }
.preset-btn { display: block; width: 100%; margin: 12px 0 4px; padding: 13px; border-radius: var(--r); text-align: left;
  background: #2a1f0d; border: 1px solid #6b551f; }
.preset-title { display: block; font-size: 15px; font-weight: 700; color: var(--amber); }
.preset-desc { display: block; font-size: 12px; color: #c7ad7e; margin-top: 3px; line-height: 1.45; }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.setting-row label { font-size: 14px; }
.seg { display: inline-flex; flex-wrap: wrap; gap: 5px; justify-content: flex-end; }
.seg button { padding: 6px 11px; border-radius: 999px; font-size: 12.5px; color: var(--dim); border: 1px solid var(--line2); background: var(--bg2); white-space: nowrap; }
.seg button.on { background: var(--green-d); color: #fff; border-color: #2a9a6e; }
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.toggle-row small { display: block; color: var(--dimmer); font-size: 12px; margin-top: 2px; line-height: 1.45; }
.toggle-row input { width: 22px; height: 22px; accent-color: var(--green); flex-shrink: 0; }
.danger-btn { width: 100%; margin-top: 10px; padding: 11px; border-radius: var(--r); border: 1px solid #6b2630; color: #f08a97; background: #24141a; font-size: 13px; }

/* ---------- game chrome ---------- */
.game-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 12.5px; color: var(--dim); margin-bottom: 12px; }
.quit { color: var(--dimmer); font-size: 12.5px; border: 1px solid var(--line); border-radius: 999px; padding: 4px 11px; }
.timer { font-family: var(--mono); font-size: 19px; font-weight: 700; color: var(--amber); font-variant-numeric: tabular-nums; min-width: 58px; text-align: right; }
.timer.near { color: #f5c877; }
.timer.warn { color: var(--red); }

.scenario-card { background: var(--bg2); border: 1px solid var(--line); border-left: 3px solid var(--green); border-radius: var(--r); padding: 13px 14px; }
.scenario-title { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--dim); margin-bottom: 5px; }
.scenario-prompt { font-size: 14.5px; line-height: 1.55; }
.scenario-prompt.big { font-size: 19px; font-weight: 600; line-height: 1.4; margin-bottom: 7px; }

.say { margin: 14px 0 4px; padding: 12px 14px; background: #14202a; border: 1px solid var(--line2); border-radius: var(--r); font-size: 14.5px; line-height: 1.55; }
.say b { color: var(--blue); }

.feedback { margin: 10px 0; padding: 11px 13px; border-radius: var(--r); font-size: 13.5px; line-height: 1.55; border: 1px solid var(--line2); background: var(--bg2); }
.feedback.good { border-color: #1f5c3a; background: #10261b; }
.feedback.bad { border-color: #6b2630; background: #26141a; }

.ilabel { font-size: 13px; color: var(--dim); margin-bottom: 9px; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pair.top { margin-top: 10px; }
.pair label, .stack { display: block; font-size: 12px; color: var(--dim); }
.stack { margin-bottom: 10px; }
.stack small { color: var(--dimmer); }
.num { width: 100%; margin-top: 5px; padding: 12px 11px; font-family: var(--mono); font-size: 19px; font-weight: 600;
  color: var(--ink); background: #0d1319; border: 1px solid var(--line2); border-radius: 9px; text-align: center; }
.num:focus { outline: none; border-color: var(--green); }
.num.wide { text-align: left; }

.opts { padding: 8px; }
.opt { display: block; width: 100%; text-align: left; margin: 6px 0; padding: 12px 13px; border-radius: 9px;
  border: 1px solid var(--line2); background: var(--bg2); font-size: 13.5px; line-height: 1.5; }
.opt:active { border-color: var(--green); }
.opt.right { border-color: #2a9a6e; background: #10261b; }
.opt.wrong { border-color: #6b2630; background: #26141a; }

.submit-btn { display: block; width: 100%; margin: 14px 0 0; padding: 15px; border-radius: var(--r); font-size: 16px; font-weight: 700;
  background: var(--green-d); border: 1px solid #2a9a6e; }
.submit-btn.ghost { background: var(--panel); border-color: var(--line2); color: var(--dim); }

/* ---------- ledger ---------- */
.ledger { margin-top: 20px; }
.ledger h3 { font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--dim); margin-bottom: 6px; }
.lrow { display: flex; justify-content: space-between; gap: 8px; font-family: var(--mono); font-size: 12.5px;
  padding: 5px 9px; border-bottom: 1px solid var(--line); color: var(--dim); }
.lrow.trade { color: var(--amber); }
.ltag { min-width: 92px; color: var(--dimmer); }
.lms { color: var(--dimmer); }

/* ---------- results ---------- */
.scorebox { text-align: center; padding: 18px 0 6px; }
.score { font-size: 52px; font-weight: 800; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.score.ok { color: var(--green); } .score.near { color: var(--amber); } .score.no { color: var(--red); }
.score-sub { color: var(--dim); font-size: 14px; margin-top: 2px; }
.mline { border: 1px solid var(--line); border-left: 3px solid var(--line2); border-radius: 9px; padding: 10px 12px; margin: 8px 0; background: var(--panel); }
.mline.ok { border-left-color: var(--green); }
.mline.near { border-left-color: var(--amber); }
.mline.no { border-left-color: var(--red); }
.mhead { display: flex; justify-content: space-between; gap: 10px; font-size: 14px; }
.mhead span { font-family: var(--mono); color: var(--dim); }
.mline ul { margin: 6px 0 0 16px; }
.mline li { font-size: 12.5px; color: var(--dim); line-height: 1.5; margin-top: 3px; }
.card p + p { margin-top: 7px; }

.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin: 10px 0 6px; text-align: center; }
.kpis b { display: block; font-size: 20px; font-family: var(--mono); }
.kpis span { display: block; font-size: 10.5px; color: var(--dimmer); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 2px; }
.spark { width: 100%; height: 54px; margin-top: 6px; }
.spark polyline { fill: none; stroke: var(--green); stroke-width: 2; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.spark .spark-ref { stroke: var(--line2); stroke-width: 1; stroke-dasharray: 3 3; vector-effect: non-scaling-stroke; }
.bar-row { display: flex; align-items: center; gap: 9px; margin: 7px 0; font-size: 12.5px; }
.bar-label { flex: 0 0 44%; color: var(--dim); }
.bar { flex: 1; height: 8px; background: var(--bg2); border-radius: 999px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--green); }
.bar i.near { background: var(--amber); } .bar i.no { background: var(--red); }
.bar-val { font-family: var(--mono); color: var(--dim); min-width: 34px; text-align: right; }

/* ---------- learn ---------- */
.learn p, .learn li { font-size: 14px; line-height: 1.6; color: #d3dde6; }
.learn ul, .learn ol { margin: 8px 0 14px 20px; }
.learn li { margin-bottom: 7px; }
.learn b { color: var(--ink); }

/* ---------- tabs ---------- */
#tabbar { position: fixed; left: 0; right: 0; bottom: 0; display: flex; background: rgba(16,22,28,0.94);
  backdrop-filter: blur(12px); border-top: 1px solid var(--line); padding-bottom: var(--sab); z-index: 20; }
#tabbar button { flex: 1; padding: 13px 4px; font-size: 12px; font-weight: 600; color: var(--dimmer); }
#tabbar button.on { color: var(--green); }
#tabbar.hidden { display: none; }

.update-banner { position: fixed; left: 12px; right: 12px; bottom: calc(var(--sab) + 62px); background: var(--amber); color: #1a1205;
  border-radius: var(--r); padding: 11px 13px; font-size: 13px; font-weight: 600; display: flex; justify-content: space-between; align-items: center; z-index: 30; }
.update-banner button { background: #1a1205; color: var(--amber); border-radius: 7px; padding: 6px 12px; font-size: 12.5px; font-weight: 700; }

@media (min-width: 620px) { .screen { padding-bottom: 100px; } }

/* per-question debrief */
.step .srow { display: grid; grid-template-columns: 44px 1fr; gap: 8px; font-size: 12.5px; line-height: 1.45; margin-top: 5px; }
.step .slab { font-family: var(--mono); color: var(--dim); font-size: 11px; letter-spacing: .04em; text-transform: uppercase; padding-top: 2px; }

/* ---------- price a contract ---------- */
.start-btn.wide { margin-top: 10px; }
.quote-line { font-family: var(--mono); font-size: 25px; font-weight: 700; color: var(--amber); margin: 6px 0 7px; letter-spacing: -0.01em; }
.quote-line small { font-family: var(--sans); font-size: 12.5px; font-weight: 500; color: var(--dim); margin-left: 6px; }
.crib { margin-top: 16px; }
.crib summary { font-size: 13px; color: var(--dim); cursor: pointer; }
.cribrow { display: grid; grid-template-columns: 112px repeat(5, 1fr); font-family: var(--mono); font-size: 12px; padding: 4px 0; border-bottom: 1px solid var(--line); color: var(--ink); }
.cribrow span:first-child { color: var(--dimmer); }
.cribrow.head { color: var(--dim); font-weight: 600; }