/* DT Bikes tools: shared look. Mirrors the tokens and components of ../index.html. */
:root{
  --ink:#060B1F;
  --night:#0A1440;
  --cobalt:#1238A8;
  --cobalt-hi:#2F5BE0;
  --chrome:#E6EAF5;
  --mist:#8E9BC4;
  --sodium:#FFB13B;
  --line:rgba(230,234,245,.14);
  --line-strong:rgba(230,234,245,.32);
  --f-display:"Big Shoulders Display","Arial Narrow","Roboto Condensed",Impact,sans-serif;
  --f-body:"Hanken Grotesk",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  --t-xl:clamp(3rem,9vw,8.5rem);
  --t-l:clamp(2.2rem,5.2vw,4.4rem);
  --gl:max(clamp(16px,4.5vw,64px),env(safe-area-inset-left,0px));
  --gr:max(clamp(16px,4.5vw,64px),env(safe-area-inset-right,0px));
  --ease:cubic-bezier(.16,1,.3,1);
  --spring:cubic-bezier(.34,1.45,.55,1);
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{overflow-x:clip;scrollbar-width:thin;scrollbar-color:var(--cobalt) var(--ink);scroll-behavior:smooth}
body{margin:0;background:var(--ink);color:var(--chrome);font:400 1.0625rem/1.6 var(--f-body);overflow-x:clip;-webkit-font-smoothing:antialiased}
img,svg,canvas{max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit}
::selection{background:var(--sodium);color:var(--ink)}
:focus-visible{outline:2px solid var(--sodium);outline-offset:3px}
.wrap{padding-left:var(--gl);padding-right:var(--gr)}
.mono{font-family:var(--f-mono);font-size:.75rem;letter-spacing:.14em;text-transform:uppercase}
.disp{font-family:var(--f-display);font-weight:900;text-transform:uppercase;line-height:.86;letter-spacing:-.005em;margin:0;text-wrap:balance}
.amber{color:var(--sodium)}
.muted{color:var(--mist)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-60px;z-index:200;background:var(--sodium);color:var(--ink);padding:10px 14px;border-radius:999px;text-decoration:none;font:600 .75rem/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase}
.skip:focus{top:12px}

/* grain */
body::after{content:"";position:fixed;inset:-50%;z-index:90;pointer-events:none;opacity:.07;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 1s steps(6) infinite}
@keyframes grain{0%{transform:translate(0,0)}20%{transform:translate(-3%,2%)}40%{transform:translate(2%,-3%)}60%{transform:translate(-2%,-1%)}80%{transform:translate(3%,3%)}100%{transform:translate(0,0)}}
@keyframes spin{to{transform:rotate(360deg)}}

/* reveal: visible without JS, JS arms it */
.ln{display:block;overflow:hidden;padding-bottom:.04em;margin-bottom:-.04em}
.js .rv{display:block;transform:translateY(105%);transition:transform 1.1s var(--ease);transition-delay:calc(var(--i,0)*70ms)}
.js .in .rv,.js .rv.in{transform:none}
.js .fade{opacity:0;transform:translateY(24px);transition:opacity 1s var(--ease),transform 1s var(--ease);transition-delay:calc(var(--i,0)*80ms)}
.js .fade.in,.js .in .fade{opacity:1;transform:none}

/* ---------- nav ---------- */
.nav{position:fixed;left:0;right:0;top:0;z-index:60;display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-top:calc(14px + env(safe-area-inset-top,0px));padding-bottom:14px;padding-left:var(--gl);padding-right:var(--gr);transition:transform .5s var(--ease),background .4s}
.nav.scrolled{background:linear-gradient(var(--ink),rgba(6,11,31,0))}
.nav.hide{transform:translateY(-110%)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;border-radius:6px}
.brand svg{width:54px;height:auto;fill:var(--chrome);overflow:visible}
.brand .spk-g{transform-origin:48px 50px;transform-box:view-box}
.brand b{font:800 1.35rem/1 var(--f-display);letter-spacing:.06em}
.nav-r{display:flex;align-items:center;gap:8px}
.pill{appearance:none;display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line-strong);background:rgba(6,11,31,.35);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  border-radius:999px;padding:9px 16px;cursor:pointer;text-decoration:none;font:500 .72rem/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;transition:background .3s,color .3s,border-color .3s;white-space:nowrap}
.pill:hover{background:var(--chrome);color:var(--ink)}
.pill.pb{border-color:var(--sodium);color:var(--sodium)}
.pill.pb:hover{background:var(--sodium);color:var(--ink)}
.pill[aria-current="page"]{background:rgba(230,234,245,.12)}
.pill svg{width:10px;height:10px}
@media (max-width:560px){.brand b{display:none}.pill{padding:9px 12px;letter-spacing:.1em}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:15px 24px;border-radius:999px;text-decoration:none;cursor:pointer;border:1px solid var(--sodium);
  background:var(--sodium);color:var(--ink);font:600 .8rem/1.2 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;transition:transform .3s var(--ease),background .3s,color .3s,border-color .3s;text-align:center}
.btn.ghost{background:transparent;color:var(--chrome);border-color:var(--line-strong)}
.btn:hover{background:var(--chrome);border-color:var(--chrome);color:var(--ink)}
.btn:active{transform:scale(.97)}
.btn svg{width:14px;height:14px;flex:none}
.btn[disabled]{opacity:.4;pointer-events:none}
.btn[aria-disabled="true"]{opacity:.45}
.ctas{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- page head ---------- */
.page{position:relative}
.page-bg{position:absolute;inset:0 0 auto 0;height:min(900px,110vh);pointer-events:none;z-index:-1;background:
  radial-gradient(48% 60% at 70% 30%,rgba(47,91,224,.42),rgba(18,56,168,.22) 45%,rgba(6,11,31,0) 80%),
  radial-gradient(120% 90% at 50% 0%,#0f2c8a 0%,#0a1a5c 35%,var(--ink) 80%)}
.head{padding-top:calc(118px + env(safe-area-inset-top,0px));padding-bottom:clamp(28px,4.5vh,48px);display:grid;gap:18px;max-width:1400px}
.head .eyebrow{color:var(--sodium);display:flex;gap:14px;flex-wrap:wrap}
.head h1{font-size:clamp(3rem,7.4vw,7rem)}
.head h1 .o{color:transparent;-webkit-text-stroke:1.5px var(--chrome)}
.head p{margin:0;max-width:48ch;color:var(--chrome);font-size:clamp(1rem,1.4vw,1.2rem)}
@media (max-width:560px){.head{padding-top:calc(100px + env(safe-area-inset-top,0px))}.head h1{font-size:clamp(2.8rem,14vw,4rem)}}

/* ---------- tool layout ---------- */
.tool{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:clamp(16px,2.4vw,28px);align-items:start;padding-bottom:clamp(60px,10vh,120px)}
@media (max-width:900px){.tool{grid-template-columns:minmax(0,1fr)}}
.stage{position:relative;border:1px solid var(--line);border-radius:6px;overflow:hidden;min-width:0;
  background:radial-gradient(60% 65% at 50% 45%,rgba(47,91,224,.5),rgba(18,56,168,.25) 45%,rgba(6,11,31,0) 80%),radial-gradient(120% 100% at 50% 20%,#0f2c8a,#0a1a5c 45%,var(--ink) 90%)}
.stage.sticky{position:sticky;top:90px}
@media (max-width:900px){.stage.sticky{position:relative;top:auto}}
.stage-top{position:absolute;left:16px;right:16px;top:14px;display:flex;justify-content:space-between;gap:10px;color:var(--mist);z-index:2;pointer-events:none}
.card{border:1px solid var(--line-strong);border-radius:6px;padding:clamp(18px,3vw,32px);background:linear-gradient(180deg,rgba(18,56,168,.22),rgba(6,11,31,.4));display:grid;gap:22px;min-width:0}
.card h2{font:900 clamp(1.8rem,3vw,2.4rem)/1 var(--f-display);text-transform:uppercase;margin:0}
.note{font-size:.88rem;color:var(--mist);margin:0}
.note b{color:var(--chrome);font-weight:600}
.warn{display:flex;gap:10px;align-items:flex-start;font-size:.9rem;border:1px dashed rgba(255,177,59,.55);background:rgba(255,177,59,.07);border-radius:6px;padding:11px 13px;margin:0}
.warn::before{content:"!";flex:0 0 20px;height:20px;border-radius:50%;background:var(--sodium);color:var(--ink);font:700 .75rem/20px var(--f-mono);text-align:center;margin-top:1px}
.toast{color:var(--sodium);min-height:1.2em;margin:0}

/* ---------- form controls ---------- */
fieldset{border:0;margin:0;padding:0;display:grid;gap:10px;min-width:0}
.lbl,fieldset legend,label.f>span{font:500 .7rem/1.2 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--mist);padding:0}
fieldset legend{margin-bottom:10px}
label.f{display:grid;gap:7px;min-width:0}
input[type=text],select,textarea{width:100%;font:inherit;color:var(--chrome);background:rgba(6,11,31,.6);border:1px solid var(--line-strong);border-radius:4px;padding:12px 14px;transition:border-color .3s}
input[type=text]:focus,select:focus,textarea:focus{outline:none;border-color:var(--sodium)}
input[type=text]:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--sodium);outline-offset:1px}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--mist) 50%),linear-gradient(135deg,var(--mist) 50%,transparent 50%);background-position:calc(100% - 18px) 55%,calc(100% - 13px) 55%;background-size:5px 5px;background-repeat:no-repeat}
select option{background:var(--ink)}

.range-row{display:grid;gap:12px}
.range-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;flex-wrap:wrap}
.readout{font:900 clamp(2.6rem,5vw,3.6rem)/.9 var(--f-display);font-variant-numeric:tabular-nums;text-transform:uppercase}
.readout small{font-size:.38em;color:var(--mist);font-weight:700;margin-left:4px;letter-spacing:.06em}
.readout .alt{display:block;font:500 .78rem/1 var(--f-mono);letter-spacing:.12em;color:var(--sodium);margin-top:8px}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:34px;background:transparent;cursor:pointer;margin:0;--p:50%}
input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:99px;background:linear-gradient(90deg,var(--sodium) var(--p),rgba(230,234,245,.16) var(--p))}
input[type=range]::-moz-range-track{height:6px;border-radius:99px;background:rgba(230,234,245,.16)}
input[type=range]::-moz-range-progress{height:6px;border-radius:99px;background:var(--sodium)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:26px;margin-top:-10px;border-radius:50%;background:var(--ink);border:3px solid var(--sodium);box-shadow:0 0 0 6px rgba(255,177,59,.14);transition:box-shadow .3s,transform .3s var(--ease)}
input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:var(--ink);border:3px solid var(--sodium);box-shadow:0 0 0 6px rgba(255,177,59,.14)}
input[type=range]:hover::-webkit-slider-thumb{box-shadow:0 0 0 10px rgba(255,177,59,.2)}
input[type=range]:active::-webkit-slider-thumb{transform:scale(1.12)}
input[type=range]:focus{outline:none}
input[type=range]:focus-visible{outline:2px solid var(--sodium);outline-offset:4px;border-radius:6px}
.range-scale{display:flex;justify-content:space-between;color:var(--mist);font:500 .66rem/1 var(--f-mono);letter-spacing:.1em}

/* segmented choices (radios / checkboxes as pills) */
.seg{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,120px),1fr));gap:8px}
.seg.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.seg.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.seg.four{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:480px){.seg.four{grid-template-columns:repeat(2,minmax(0,1fr))}}
.chipopt{position:relative;display:flex;align-items:center;justify-content:center;gap:8px;text-align:center;border:1px solid var(--line-strong);border-radius:999px;padding:11px 10px;cursor:pointer;
  font:500 .72rem/1.15 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--chrome);transition:background .3s,color .3s,border-color .3s,transform .25s var(--ease);min-width:0}
.chipopt input{position:absolute;opacity:0;pointer-events:none;width:1px;height:1px}
.chipopt:hover{border-color:var(--chrome)}
.chipopt:has(input:checked){background:var(--sodium);border-color:var(--sodium);color:var(--ink)}
.chipopt:has(input:focus-visible){outline:2px solid var(--sodium);outline-offset:3px}
.chipopt:active{transform:scale(.97)}
.chipopt svg{width:18px;height:18px;flex:none}

/* big option tiles */
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,150px),1fr));gap:10px}
.tile{position:relative;display:grid;gap:6px;align-content:start;padding:14px;border:1px solid var(--line);border-radius:8px;background:rgba(230,234,245,.025);cursor:pointer;transition:border-color .3s,background .3s,transform .35s var(--ease);min-width:0}
.tile input{position:absolute;opacity:0;pointer-events:none;width:1px;height:1px}
.tile:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.tile:has(input:checked){border-color:var(--sodium);background:rgba(255,177,59,.1)}
.tile:has(input:focus-visible){outline:2px solid var(--sodium);outline-offset:3px}
.tile b{font:800 1.3rem/1 var(--f-display);text-transform:uppercase}
.tile span{font-size:.86rem;color:var(--mist);line-height:1.35}
.tile svg{width:64px;height:auto;overflow:visible}
.tile svg *{fill:none;stroke:var(--chrome);stroke-width:3;stroke-linecap:round;stroke-linejoin:round}
.tile:has(input:checked) svg *{stroke:var(--sodium)}

/* result block */
.result{display:grid;gap:14px;border-top:1px dashed var(--line-strong);padding-top:20px}
.big{font:900 clamp(4.4rem,9vw,6.6rem)/.8 var(--f-display);font-variant-numeric:tabular-nums;text-transform:uppercase}
.swap{display:inline-block;animation:swapIn .6s var(--ease)}
@keyframes swapIn{from{opacity:0;transform:translateY(.35em) rotateX(60deg)}to{opacity:1;transform:none}}
.badge{display:inline-flex;align-items:center;gap:8px;padding:6px 10px;border-radius:999px;border:1px solid rgba(255,177,59,.5);color:var(--sodium);font:500 .66rem/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;justify-self:start}
.badge::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--sodium);box-shadow:0 0 0 0 rgba(255,177,59,.6);animation:pulse 1.8s infinite}
@keyframes pulse{70%{box-shadow:0 0 0 8px rgba(255,177,59,0)}100%{box-shadow:0 0 0 0 rgba(255,177,59,0)}}
.kv{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.kv div{display:grid;gap:4px;border:1px solid var(--line);border-radius:6px;padding:12px;min-width:0}
.kv span{font:500 .66rem/1.2 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--mist)}
.kv b{font:800 1.5rem/1.05 var(--f-display);text-transform:uppercase;overflow-wrap:anywhere}

/* tables */
.charts{padding-bottom:clamp(80px,12vh,140px);display:grid;gap:28px}
.sec-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px 40px}
.sec-head h2{font-size:var(--t-l)}
.sec-head p{margin:0;max-width:46ch;color:var(--mist)}
.sec-head .mono{color:var(--sodium);display:block;margin-bottom:14px}
.tables{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:16px}
.tbl{border:1px solid var(--line);border-radius:6px;overflow:hidden;min-width:0;background:rgba(230,234,245,.02)}
.tbl h3{margin:0;padding:14px 16px;font:800 1.35rem/1 var(--f-display);text-transform:uppercase;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;gap:10px}
.tbl h3 span{font:500 .62rem/1 var(--f-mono);letter-spacing:.12em;color:var(--mist)}
.tbl .scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.92rem}
th,td{text-align:left;padding:10px 16px;border-bottom:1px solid var(--line);white-space:nowrap}
th{font:500 .64rem/1.2 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--mist)}
tbody tr{transition:background .4s,color .4s}
tbody tr:last-child td{border-bottom:0}
tbody tr.on{background:rgba(255,177,59,.13);color:var(--sodium)}
tbody tr.on td:first-child{box-shadow:inset 3px 0 0 var(--sodium)}
td b{font:800 1.1rem/1 var(--f-display)}
@media (max-width:480px){th,td{padding:9px 10px;font-size:.85rem}}

/* message preview */
.preview{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;font:400 .82rem/1.55 var(--f-mono);color:var(--mist);background:rgba(6,11,31,.6);border:1px solid var(--line);border-radius:4px;padding:14px;max-height:220px;overflow:auto}

/* ---------- footer ---------- */
footer{position:relative;background:radial-gradient(90% 80% at 50% 100%,var(--cobalt),#0a1a5c 45%,var(--ink) 85%);padding-top:clamp(70px,12vh,140px);padding-bottom:calc(30px + env(safe-area-inset-bottom,0px));overflow:hidden}
.f-cta{display:grid;gap:22px;justify-items:start;margin-bottom:clamp(50px,8vh,100px)}
.f-cta h2{font-size:var(--t-l);max-width:14ch}
.giant{width:100%;height:auto;display:block;overflow:visible}
.giant path,.giant circle{fill:var(--chrome);fill-opacity:0;stroke:var(--chrome);stroke-width:.7;stroke-dasharray:1;stroke-dashoffset:1;transition:stroke-dashoffset 2.6s var(--ease),fill-opacity 1.2s ease 1.6s}
.giant .spk{fill:none}
.giant.in path,.giant.in circle{stroke-dashoffset:0;fill-opacity:1}
.giant.in .spk{fill:none}
.f-row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:16px 30px;margin-top:40px;padding-top:22px;border-top:1px solid var(--line-strong);color:var(--mist)}
.f-row a{text-decoration:none}
.f-row a:hover{color:var(--sodium)}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important;transition-delay:0s!important}
  body::after{display:none}
}