/* ============================================================
   SPREADS LAB — design system (petroleum-noir trading terminal)
   ============================================================ */
:root{
  --bg:#0a0c0b; --bg2:#0e1211; --panel:#111614; --panel2:#161d1a;
  --ink:#ece6d6; --ink-dim:#9aa39b; --line:#23302b; --line2:#2c3a34;
  --gold:#e8a838; --gold-soft:#f1c66b; --teal:#3bb8a4; --teal-soft:#74d8c8;
  --crimson:#d6453d; --crimson-soft:#e8736b; --blue:#5b8dd6; --violet:#9a7bd0;
  --back:#e8a838; --cont:#3bb8a4;
  --mono:'JetBrains Mono',ui-monospace,monospace; --serif:'Fraunces',Georgia,serif; --sans:'Hanken Grotesk',system-ui,sans-serif;
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--ink); font-family:var(--sans); font-weight:300;
  line-height:1.6; overflow-x:hidden; -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(120% 80% at 82% -8%, #16241f 0%, transparent 52%),
    radial-gradient(90% 60% at -5% 102%, #131c18 0%, transparent 50%),
    radial-gradient(60% 50% at 50% 50%, #0c1110 0%, transparent 100%);
  background-attachment:fixed;
}
/* grain + faint scanlines */
body::after{content:"";position:fixed;inset:0;pointer-events:none;z-index:9999;opacity:.04;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");}
body::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:9998;opacity:.015;
  background:repeating-linear-gradient(0deg,#fff 0 1px,transparent 1px 3px);}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.narrow{max-width:920px}
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;line-height:1.05;letter-spacing:-.01em}
.mono{font-family:var(--mono)} a{color:var(--gold-soft);text-decoration:none}
.dim{color:var(--ink-dim)} .gold{color:var(--gold)} .teal{color:var(--teal)} .crim{color:var(--crimson)} .blue{color:var(--blue)}
mark{background:rgba(232,168,56,.16);color:var(--gold-soft);padding:0 4px;border-radius:3px}
hr.rule{border:0;border-top:1px solid var(--line);margin:0}

/* ---------- nav ---------- */
nav.top{position:fixed;top:0;left:0;right:0;z-index:500;backdrop-filter:blur(12px);
  background:rgba(10,12,11,.74);border-bottom:1px solid var(--line)}
nav.top .wrap{display:flex;align-items:center;justify-content:space-between;height:58px;max-width:var(--maxw)}
nav.top .brand{font-family:var(--mono);font-weight:700;letter-spacing:.16em;font-size:13px;color:var(--gold);display:flex;align-items:center;gap:9px}
nav.top .brand .dot{width:8px;height:8px;border-radius:50%;background:var(--gold);box-shadow:0 0 12px var(--gold);animation:pulse 2.6s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
nav.top .links{display:flex;gap:20px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase}
nav.top .links a{color:var(--ink-dim);transition:color .2s;position:relative;padding:4px 0}
nav.top .links a:hover{color:var(--ink)}
nav.top .links a.active{color:var(--gold)}
nav.top .links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--gold)}
nav.top .menu-btn{display:none}
@media(max-width:920px){nav.top .links{display:none}}

/* ---------- hero ---------- */
.hero{min-height:92vh;display:flex;flex-direction:column;justify-content:center;position:relative;padding-top:58px}
.hero.tall{min-height:100vh}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.36em;text-transform:uppercase;color:var(--teal);margin-bottom:24px}
.hero h1{font-size:clamp(44px,8.5vw,120px);font-weight:300;font-optical-sizing:auto}
.hero h1 em{font-style:italic;color:var(--gold)} .hero h1 b{font-weight:800}
.hero .sub{max-width:640px;margin-top:26px;font-size:clamp(16px,2vw,21px);color:var(--ink-dim)}
.scrollcue{margin:26px auto 0;text-align:center;font-family:var(--mono);font-size:10px;letter-spacing:.3em;color:var(--ink-dim);animation:bob 2.4s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* ---------- stat bar ---------- */
.statbar{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;margin-top:50px;background:var(--line);border:1px solid var(--line)}
.statbar .cell{background:var(--bg);padding:22px 20px;transition:background .3s}
.statbar .cell:hover{background:var(--panel2)}
.statbar .n{font-family:var(--mono);font-weight:700;font-size:clamp(22px,3.2vw,38px);color:var(--ink)}
.statbar .l{font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-dim);margin-top:8px}
@media(max-width:720px){.statbar{grid-template-columns:repeat(2,1fr)}}

/* ---------- sections ---------- */
section{padding:100px 0;position:relative}
section.tight{padding:64px 0}
.kicker{font-family:var(--mono);font-size:11px;letter-spacing:.32em;text-transform:uppercase;color:var(--teal);margin-bottom:16px;display:flex;align-items:center;gap:12px}
.kicker::before{content:"";width:34px;height:1px;background:var(--teal)}
.h-sec{font-size:clamp(30px,5vw,56px);font-weight:300;max-width:16ch}
.lede{max-width:680px;margin-top:20px;font-size:18px;color:var(--ink-dim)}
.big-quote{font-family:var(--serif);font-size:clamp(23px,3.4vw,38px);font-weight:300;font-style:italic;max-width:20ch;line-height:1.18}

/* reveal (hardened in site.js with a fallback) */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.no-js .reveal,.reveal.force{opacity:1;transform:none}

/* ---------- panels / cards / grids ---------- */
.panel{background:linear-gradient(180deg,var(--panel),var(--bg2));border:1px solid var(--line);border-radius:14px;padding:26px}
.panel.glow{box-shadow:0 0 0 1px rgba(232,168,56,.06),0 24px 80px -40px rgba(232,168,56,.25)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:860px){.grid2,.grid3,.grid4{grid-template-columns:1fr}}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:24px;position:relative;overflow:hidden;transition:border-color .3s,transform .3s}
.card:hover{border-color:var(--line2);transform:translateY(-2px)}
.card .num{font-family:var(--mono);font-size:13px;color:var(--teal);letter-spacing:.2em}
.card h3{font-size:24px;margin:10px 0 12px} .card p{color:var(--ink-dim);font-size:15px}
.formula{font-family:var(--mono);font-size:13px;color:var(--gold-soft);background:#0c100e;border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin-top:14px;overflow-x:auto;line-height:1.7}
.src{font-family:var(--mono);font-size:11px;color:var(--ink-dim)}
.chip{display:inline-block;font-family:var(--mono);font-size:11px;padding:3px 9px;border-radius:20px;border:1px solid var(--line);margin-right:6px}
.chip.b{color:var(--back);border-color:rgba(232,168,56,.4)} .chip.c{color:var(--cont);border-color:rgba(59,184,164,.4)}

/* nav cards (home) */
.navcard{display:block;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px;transition:.25s;position:relative;overflow:hidden}
.navcard:hover{border-color:var(--gold);transform:translateY(-3px)}
.navcard .idx{font-family:var(--mono);font-size:12px;color:var(--teal);letter-spacing:.2em}
.navcard h3{font-size:25px;margin:8px 0 8px;color:var(--ink)} .navcard p{color:var(--ink-dim);font-size:14px}
.navcard .go{font-family:var(--mono);font-size:12px;color:var(--gold);margin-top:14px;display:inline-block}
.navcard::after{content:"";position:absolute;inset:0;background:radial-gradient(120% 120% at 100% 0%,rgba(232,168,56,.08),transparent 60%);opacity:0;transition:.25s}
.navcard:hover::after{opacity:1}

/* ---------- builder ---------- */
.builder{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-end}
.builder .field{display:flex;flex-direction:column;gap:8px}
.builder label{font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-dim)}
select,input[type=number]{background:var(--panel2);color:var(--ink);border:1px solid var(--line);border-radius:8px;padding:11px 14px;font-family:var(--mono);font-size:15px}
.ticket{flex:1;min-width:260px;background:#0c100e;border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:10px;padding:20px 22px}
.ticket .sym{font-family:var(--mono);font-size:30px;font-weight:700;color:var(--gold)}
.ticket .nm{font-family:var(--serif);font-size:22px;margin-top:4px}
.ticket .meta{font-family:var(--mono);font-size:12px;color:var(--ink-dim);margin-top:12px;line-height:1.9}

/* ---------- scrubber / legend / filters ---------- */
.scrub{display:flex;align-items:center;gap:18px;margin:18px 0 6px}
.scrub input[type=range]{flex:1;accent-color:var(--gold)}
.scrub .date{font-family:var(--mono);font-size:18px;color:var(--gold);min-width:120px}
.legend{display:flex;gap:20px;font-family:var(--mono);font-size:12px;color:var(--ink-dim);flex-wrap:wrap;align-items:center}
.legend i{display:inline-block;width:11px;height:11px;border-radius:3px;margin-right:7px;vertical-align:middle}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:18px}
.filters button{font-family:var(--mono);font-size:12px;letter-spacing:.05em;padding:8px 16px;border:1px solid var(--line);background:transparent;color:var(--ink-dim);border-radius:30px;cursor:pointer;transition:.2s}
.filters button.on{background:var(--gold);color:#1a1206;border-color:var(--gold)}
.filters button:hover{color:var(--ink)}

/* ---------- heatmap ---------- */
.heat{display:grid;gap:2px}
.heat .cellh{aspect-ratio:1;border-radius:3px;display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:10px;cursor:default;transition:transform .1s}
.heat .cellh:hover{transform:scale(1.14);z-index:2;outline:1px solid var(--ink)}

/* ---------- table ---------- */
table{width:100%;border-collapse:collapse;font-family:var(--mono);font-size:13px}
th,td{text-align:right;padding:9px 12px;border-bottom:1px solid var(--line)}
th{color:var(--ink-dim);font-weight:500;font-size:11px;letter-spacing:.1em;text-transform:uppercase;cursor:pointer;user-select:none}
th:first-child,td:first-child{text-align:left}
tbody tr:hover{background:var(--panel2)}

/* ---------- tooltip ---------- */
#tip{position:fixed;pointer-events:none;z-index:1000;background:#0b0f0d;border:1px solid var(--gold);border-radius:8px;padding:10px 13px;font-family:var(--mono);font-size:12px;opacity:0;transition:opacity .12s;max-width:280px;box-shadow:0 10px 40px rgba(0,0,0,.6)}

/* ---------- payoff svg ---------- */
.payoff svg{width:100%;height:auto;display:block}

/* ============================================================
   EV / MARKET-MAKING GAME + LADDER
   ============================================================ */
.game-shell{display:grid;grid-template-columns:300px 1fr;gap:22px}
@media(max-width:900px){.game-shell{grid-template-columns:1fr}}
.ladder{font-family:var(--mono);font-size:13px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#0a0e0c}
.ladder .lhead{display:grid;grid-template-columns:1fr 1fr 1fr;background:var(--panel2);color:var(--ink-dim);font-size:10px;letter-spacing:.12em;text-transform:uppercase;padding:8px 10px;text-align:center}
.ladder .lrow{display:grid;grid-template-columns:1fr 1fr 1fr;text-align:center;border-top:1px solid #141a17;height:26px;align-items:center;position:relative}
.ladder .lrow .bidsz{color:var(--cont)} .ladder .lrow .asksz{color:var(--crimson-soft)}
.ladder .lrow .px{color:var(--ink);font-weight:500}
.ladder .lrow.inside{background:rgba(232,168,56,.06)}
.ladder .lrow.lastrow .px{color:var(--gold)}
.ladder .depthbar{position:absolute;top:0;bottom:0;opacity:.16}
.ladder .depthbar.bid{left:0;background:var(--cont)} .ladder .depthbar.ask{right:0;background:var(--crimson)}

.gamecard{background:linear-gradient(180deg,var(--panel),var(--bg2));border:1px solid var(--line);border-radius:14px;padding:26px}
.quote-row{display:flex;gap:14px;flex-wrap:wrap;align-items:flex-end;margin:18px 0}
.quote-row .field{display:flex;flex-direction:column;gap:7px}
.quote-row .field label{font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-dim)}
.quote-row input{width:120px;font-size:18px;text-align:center}
.btn{font-family:var(--mono);font-size:13px;letter-spacing:.06em;padding:12px 22px;border-radius:10px;border:1px solid var(--gold);background:var(--gold);color:#1a1206;cursor:pointer;transition:.2s;font-weight:700}
.btn:hover{filter:brightness(1.1)} .btn.ghost{background:transparent;color:var(--gold)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn.sm{padding:8px 14px;font-size:12px}
.pnl-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin-top:6px}
.pnl-grid .pc{background:var(--bg);padding:14px 16px}
.pnl-grid .pc .v{font-family:var(--mono);font-size:24px;font-weight:700}
.pnl-grid .pc .k{font-family:var(--mono);font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-dim);margin-top:6px}
.pos{color:var(--teal)} .neg{color:var(--crimson-soft)}
.log{font-family:var(--mono);font-size:12px;max-height:220px;overflow-y:auto;border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:#0a0e0c;line-height:1.9}
.log .ln{border-bottom:1px solid #141a17;padding:3px 0}
.reveal-dice{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}
.die{width:46px;height:46px;border-radius:10px;background:var(--panel2);border:1px solid var(--line2);display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:22px;font-weight:700;color:var(--ink)}
.die.hidden{color:var(--ink-dim);opacity:.5} .die.new{border-color:var(--gold);color:var(--gold);box-shadow:0 0 16px -4px var(--gold)}
.ev-track{height:8px;border-radius:6px;background:#0c100e;overflow:hidden;margin-top:8px}
.ev-track > div{height:100%;background:linear-gradient(90deg,var(--teal),var(--gold))}
.term{border-left:3px solid var(--teal);padding:8px 16px;background:#0c100e;margin:8px 0;border-radius:0 8px 8px 0}
.term b{color:var(--gold)} .term span{color:var(--ink-dim);font-size:14px}
.callout{border:1px dashed var(--line2);border-radius:10px;padding:16px 18px;background:rgba(91,141,214,.05)}

/* ---------- footer ---------- */
.foot{padding:64px 0 84px;border-top:1px solid var(--line);color:var(--ink-dim);font-family:var(--mono);font-size:12px;line-height:2}
.foot .gold{font-size:14px;letter-spacing:.2em}
.tagwarn{color:var(--crimson)}
.footlinks{display:flex;gap:18px;flex-wrap:wrap;margin:10px 0}
.footlinks a{color:var(--ink-dim)} .footlinks a:hover{color:var(--gold)}