*{box-sizing:border-box}
:root{
  --purple: hsl(259,100%,65%);
  --light-red: hsl(0,100%,67%);
  --white: hsl(0,0%,100%);
  --off-white: hsl(0,0%,94%);
  --light-grey: hsl(0,0%,86%);
  --smokey: hsl(0,1%,44%);
  --off-black: hsl(0,0%,8%);
  --bg: linear-gradient(180deg,var(--off-white),#fff);
}
html,body{height:100%}
body{
  font-family: 'Poppins',system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  margin:0;
  background:var(--bg);
  color:var(--off-black);
  padding:48px 16px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.app{width:100%;max-width:540px}
.card{
  background:var(--white);
  padding:32px;
  border-radius:12px;
  box-shadow:0 10px 30px rgba(0,0,0,0.06);
}
.inputs{display:flex;gap:16px;margin-bottom:24px}
.input-group{flex:1;display:flex;flex-direction:column}
.input-group label{font-size:12px;color:var(--smokey);margin-bottom:8px}
.input-group input{
  padding:12px 10px;
  font-size:18px;
  border:1px solid var(--light-grey);
  border-radius:8px;
}
.input-group input:focus{outline:none;border-color:var(--purple);box-shadow:0 0 0 3px rgba(140,86,255,0.12)}
.error{color:var(--light-red);font-size:12px;height:16px;margin-top:6px}
.divider{display:flex;justify-content:flex-end;padding:12px 0}
#calculate{background:var(--off-black);color:var(--white);border:none;padding:12px 18px;border-radius:8px;cursor:pointer}
#calculate:hover{opacity:0.95}
.results{display:flex;gap:24px;align-items:flex-end;margin-top:24px}
.result-item{flex:1}
.result-value{display:block;font-size:48px;font-weight:800;color:var(--off-black)}
.result-label{display:block;color:var(--smokey);font-weight:700}
.attribution{font-size:11px;text-align:center;margin-top:16px}
.attribution a{color:var(--purple)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media (max-width:480px){
  .inputs{gap:8px}
  .result-value{font-size:34px}
  .card{padding:20px}
}


.input-group{min-width:0}.input-group input{width:100%;min-width:0}.error{height:auto;min-height:16px}.results{flex-wrap:wrap}body{height:auto;min-height:100vh}.results{overflow-wrap:anywhere}