:root{
  --bg:#0b0c10;
  --card:#12141b;
  --card2:#0f1117;
  --text:#e9ecf1;
  --muted:#a8b0c0;
  --line:#22283a;
  --accent:#7c5cff;
  --accent2:#28d7a2;
  --danger:#ff5c7a;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius:18px;
  --max:1100px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 20% -10%, rgba(124,92,255,.25), transparent),
              radial-gradient(1200px 600px at 90% 0%, rgba(40,215,162,.18), transparent),
              var(--bg);
  color:var(--text);
  line-height:1.4;
}

a{color:inherit}
.container{max-width:var(--max); margin:0 auto; padding: 18px}

.site-header{
  position: sticky; top:0;
  background: rgba(11,12,16,.75);
  backdrop-filter: blur(10px);
  border-bottom:1px solid rgba(255,255,255,.06);
  z-index:10;
}
.site-header .container{
  display:flex; align-items:center; justify-content:space-between;
  gap:16px;
}
.brand{display:flex; flex-direction:column; gap:2px}
.tag{font-size:12px; color:var(--muted)}
.nav{display:flex; gap:14px; flex-wrap:wrap}
.nav a{color:var(--muted); text-decoration:none}
.nav a:hover{color:var(--text)}

.logo{
  display:flex;
  align-items:center;
  gap:8px;
  font-weight:800;
  text-decoration:none;
  color:inherit;
}

.logo-img{
  height:28px;
  width:auto;
  display:block;
}

.logo-text{
  white-space:nowrap;
}

.hero{padding: 22px 0 10px}
h1{font-size:38px; margin: 10px 0 8px}
.subhead{color:var(--muted); max-width: 900px; margin:0}

.card{
  background: linear-gradient(180deg, rgba(255,255,255,.05), transparent 30%),
              rgba(18,20,27,.9);
  border:1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  margin: 16px 0;
}
.grid{display:grid; grid-template-columns: 1fr 1fr; gap:16px}
.panel{
  background: rgba(15,17,23,.55);
  border:1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  padding: 16px;
}

h2{margin: 0 0 12px; font-size: 18px}
h3{margin: 0 0 10px; font-size: 16px}
hr.sep{border:0; height:1px; background: rgba(255,255,255,.08); margin: 16px 0}

.tabs{display:flex; gap:10px; margin-bottom: 12px}
.tab{
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  cursor:pointer;
}
.tab.active{
  color: var(--text);
  border-color: rgba(124,92,255,.55);
  background: rgba(124,92,255,.16);
}

.role-tabs{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

.role-tab{
  padding:10px 14px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.15);
  background: rgba(0,0,0,.25);
  color: var(--text);
  font-weight:600;
  cursor:pointer;
  transition: all .15s ease;
}

.role-tab:hover{
  border-color: rgba(124,92,255,.6);
}

.role-tab.active{
  background: linear-gradient(135deg, rgba(124,92,255,.9), rgba(92,60,255,.9));
  border-color: transparent;
}

.role-tab:focus{
  outline:none;
}

.form{display:flex; flex-direction:column; gap:12px}
.row{display:flex; flex-direction:column; gap:6px}
label{font-size:13px; color: var(--muted)}
input[type="range"]{width:100%}
input{
  width:100%;
  padding: 12px 12px;
  border-radius: 12px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(0,0,0,.25);
  color: var(--text);
  outline:none;
}
input:focus{border-color: rgba(124,92,255,.7)}
.field{display:flex; align-items:center; gap:8px}
.prefix{
  padding: 10px 10px;
  border-radius: 12px;
  border:1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.25);
  color: var(--muted);
}

.hint{margin:0; color: var(--muted); font-size: 12px}
.fineprint{margin: 2px 0 0; color: var(--muted); font-size: 12px}

.actions{display:flex; gap:10px; flex-wrap:wrap; margin-top: 6px}
.btn{
  border:1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.05);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor:pointer;
}
.btn:hover{border-color: rgba(255,255,255,.25)}
.btn.primary{
  border-color: rgba(124,92,255,.65);
  background: rgba(124,92,255,.18);
}
.btn.primary:hover{background: rgba(124,92,255,.26)}
.hidden{display:none}

.result .big{padding: 12px; border-radius: 16px; border:1px solid rgba(255,255,255,.08); background: rgba(0,0,0,.2)}
.label{color: var(--muted); font-size: 12px}
.value{font-size: 44px; font-weight: 900; margin-top: 4px}
.sub{color: var(--muted); font-size: 13px; margin-top: 4px}

.breakdown{margin-top: 12px; display:flex; flex-direction:column; gap:8px}
.bd-row{
  display:flex; justify-content:space-between; gap:12px;
  padding: 10px 12px;
  border-radius: 14px;
  border:1px solid rgba(255,255,255,.06);
  background: rgba(0,0,0,.18);
  color: var(--muted);
}
.bd-row strong{color: var(--text)}
.bd-row.total{border-color: rgba(40,215,162,.35); background: rgba(40,215,162,.08)}

.share{display:flex; align-items:center; gap:10px; margin-top: 14px; flex-wrap:wrap}
.status{color: var(--muted); font-size: 12px}

.range-row{display:flex; justify-content:space-between; color: var(--muted); font-size: 12px}

.advanced{margin-top: 8px}
.advanced summary{cursor:pointer; color: var(--text); font-weight: 700}
.method ul{margin: 10px 0 0; padding-left: 18px; color: var(--muted)}
.method li{margin: 6px 0}

.footer{border-top:1px solid rgba(255,255,255,.06); margin-top: 26px; padding: 14px 0}
.footer-inner{display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap; color: var(--muted)}
.footer-links{display:flex; gap:12px}
.footer a{color: var(--muted); text-decoration:none}
.footer a:hover{color: var(--text)}

@media (max-width: 980px){
  .grid{grid-template-columns: 1fr}
  h1{font-size: 32px}
  .value{font-size: 40px}
}