roi-calculator{
  --safeL:env(safe-area-inset-left,0px);
  --safeR:env(safe-area-inset-right,0px);
  --safeB:env(safe-area-inset-bottom,0px);

  --ring:0 0 0 3px rgba(99,102,241,.22);
  --muted:#64748b;
  --card:#fff;
  --stroke:#e6edf7;
  --accent:#2563eb;
  --accent2:#0ea5e9;

  display:block;
  width:100%;
  max-width:100%;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--fg,#0f172a);
  color-scheme:light;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;

  overflow-wrap:anywhere;
  word-break:normal;
  hyphens:none;
}

roi-calculator,
roi-calculator *,roi-calculator *::before,roi-calculator *::after{ box-sizing:border-box; }

roi-calculator .section{
  padding:16px calc(16px + var(--safeL)) 16px calc(16px + var(--safeR));
  max-width:100%;
}

roi-calculator .wrap{
  max-width:1100px;
  margin:0 auto;
  content-visibility:auto;
  contain:content;
  min-width:0;
  max-inline-size:100%;
}

roi-calculator .card{
  background:var(--card);
  border:1px solid var(--stroke);
  border-radius:14px;
  box-shadow:0 10px 24px rgba(2,6,23,.08);
  overflow:hidden;
  min-width:0;
  max-inline-size:100%;
}

roi-calculator .hero{
  padding:12px 12px 0;
  border-bottom:1px solid var(--stroke);
}

roi-calculator .title-band{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  align-items:center;
  justify-content:space-between;
  padding:12px;
  border-radius:12px;
  border:1px solid #cfe3ff;
  background:linear-gradient(180deg,#f0f7ff,#fee79e);
  min-width:0;
  max-inline-size:100%;
}

roi-calculator h2{
  margin:0;
  line-height:1.05;
  letter-spacing:-.02em;
  font-size:clamp(18px,3.6vw,32px);
  font-weight:900;
  max-inline-size:100%;
}

roi-calculator .subtitle{
  margin:0;
  color:var(--muted);
  font-weight:600;
  font-size:clamp(12px,1.25vw,14px);
  max-inline-size:100%;
}

roi-calculator .body{
  padding:12px;
  min-width:0;
  max-inline-size:100%;
}

roi-calculator .layout{
  display:grid;
  gap:10px;
  grid-template-columns:1fr;
  grid-template-areas:"inputs" "controls" "results";
  min-width:0;
  max-inline-size:100%;
}

@media(min-width:980px){
  roi-calculator .layout{
    grid-template-columns:1.05fr .95fr;
    grid-template-areas:"inputs results" "controls results";
    column-gap:12px;
    row-gap:10px;
  }
}

roi-calculator .panel{
  border:1px solid var(--stroke);
  border-radius:12px;
  background:var(--card);
  padding:10px;
  min-width:0;
  max-inline-size:100%;
}

roi-calculator .panel h3{
  margin:0 0 8px;
  font-size:15px;
}

roi-calculator .inputs{
  grid-area:inputs;
  display:flex;
  flex-direction:column;
  min-width:0;

  /* ✅ ~50% smaller controls */
  --ctrlW: 210px;
  --ctrlH: 30px;
  --ctrlPadY: 6px;
  --ctrlPadX: 9px;
  --unitGap: 10px;
}

@media(max-width:860px){
  roi-calculator .inputs{ --ctrlW: 200px; }
}

roi-calculator .rows{
  display:flex;
  flex-direction:column;
  gap:10px;
  min-width:0;
}

/* ✅ fixed left alignment across ALL rows (SRS + Custom) */
roi-calculator .row{
  display:grid;
  grid-template-columns: minmax(180px,.95fr) minmax(0, 1fr);
  gap:10px;
  align-items:center;
  min-width:0;
}

@media(max-width:520px){
  roi-calculator .row{ grid-template-columns:1fr; gap:6px; }
}

roi-calculator label{
  font-size:12.5px;
  color:var(--muted);
  font-weight:600;
}

roi-calculator input[type="number"],
roi-calculator select{
  border:1px solid #cbd5e1;
  border-radius:10px;
  font-size:13.5px;
  background:#fff;
  color:#0f172a;
  min-height:var(--ctrlH);
  padding:var(--ctrlPadY) var(--ctrlPadX);
}

roi-calculator input:focus,
roi-calculator select:focus{ outline:none; box-shadow:var(--ring); }

roi-calculator input[type="number"]::-webkit-outer-spin-button,
roi-calculator input[type="number"]::-webkit-inner-spin-button{ -webkit-appearance:none; margin:0; }
roi-calculator input[type="number"]{ -moz-appearance:textfield; }

/* ✅ inputs/select + suffix are LEFT aligned and share the same start */
roi-calculator .unit{
  display:flex;
  align-items:center;
  justify-content:flex-start;
  gap:var(--unitGap);
  width:100%;
  min-width:0;
}

roi-calculator .unit input[type="number"]{
  width:min(100%, var(--ctrlW));
  max-width:var(--ctrlW);
}

roi-calculator .row select{
  width:min(100%, var(--ctrlW));
  max-width:var(--ctrlW);
  justify-self:start;
}

roi-calculator .unit span{
  white-space:nowrap;
  color:var(--muted);
  font-size:12px;
  line-height:1;
}

roi-calculator .hr{ height:1px; background:var(--stroke); margin:8px 0; }

roi-calculator .sectionLabel{
  display:flex;
  align-items:center;
  gap:8px;
  color:var(--muted);
  font-weight:800;
  letter-spacing:.06em;
  margin:6px 0 2px;
  font-size:11px;
}

roi-calculator .sectionLabel::before{
  content:"";
  flex:1;
  height:1px;
  background:linear-gradient(90deg,var(--accent),transparent);
  border-radius:999px;
}

/* ✅ custom accent WITHOUT breaking alignment */
roi-calculator .customAccent{
  border-left:3px solid var(--accent2);
  padding-left:12px;
  border-radius:10px;
  margin-top:2px;

  display:flex;
  flex-direction:column;
  gap:12px;
}

roi-calculator .controls{
  grid-area:controls;
  display:flex;
  align-items:center;
  gap:8px;
  flex-wrap:wrap;
  min-width:0;
  max-inline-size:100%;
}

roi-calculator .btn{
  appearance:none;
  cursor:pointer;
  border:1px solid #2563eb;
  border-radius:10px;
  padding:9px 12px;
  font-weight:800;
  font-size:13px;
  line-height:1;
  background:linear-gradient(180deg,#3b82f6,#2563eb);
  color:#fff;
  box-shadow:0 6px 14px rgba(37,99,235,.22);
  transition:transform .12s ease, box-shadow .12s ease;
  max-width:100%;
  min-width:0;
}

roi-calculator .btn:hover{ transform:translateY(-1px); box-shadow:0 10px 18px rgba(37,99,235,.30); }
roi-calculator .btn:active{ transform:translateY(0); }
roi-calculator .btn:focus-visible{ outline:none; box-shadow:var(--ring); }

roi-calculator .btn.secondary{
  background:linear-gradient(180deg,#fff,#f8fafc);
  color:#0f172a;
  border-color:#cbd5e1;
  box-shadow:0 6px 14px rgba(2,6,23,.08);
}

roi-calculator .status{ font-size:12px; color:var(--muted); }

roi-calculator .results{ grid-area:results; display:grid; gap:10px; min-width:0; }

/* ✅ less empty space in KPI boxes */
roi-calculator .kpi{
  border:1px solid var(--stroke);
  border-radius:12px;
  padding:10px 12px;
  background:linear-gradient(180deg,#fff,#f7fbff);
  min-width:0;
}

roi-calculator .kpi .label{
  font-size:10.5px;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.06em;
  font-weight:800;
  margin:0 0 4px;
  line-height:1.2;
}

roi-calculator .kpi .value{
  font-size:clamp(18px,2.4vw,26px);
  font-weight:900;
  line-height:1.1;
  margin:0;
}

roi-calculator .mono{ font-variant-numeric:tabular-nums; }

roi-calculator .compare{
  display:grid;
  gap:10px;
  min-width:0;
  grid-template-columns:1fr;
}

roi-calculator .cmp-card{
  border:1px solid var(--stroke);
  border-radius:12px;
  padding:10px;
  background:var(--card);
  min-width:0;
}

roi-calculator .cmp-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  margin-bottom:6px;
  gap:10px;
  min-width:0;
}

roi-calculator .cmp-head h3{ margin:0; font-size:15px; }

roi-calculator .badge{
  font-size:10.5px;
  border:1px solid var(--stroke);
  padding:4px 8px;
  border-radius:999px;
  color:#8a94a8;
}

roi-calculator .win{ border:2px solid #22c55e; box-shadow:0 0 0 4px rgba(34,197,94,.10); }

roi-calculator .stack{ display:grid; gap:6px; min-width:0; }

roi-calculator .split{
  display:flex;
  justify-content:space-between;
  gap:10px;
  font-size:14px;
  min-width:0;
}

roi-calculator .split span:first-child{
  color:var(--muted);
  font-size:12.5px;
  max-width:70%;
}

roi-calculator .split span:last-child{ max-width:50%; }

roi-calculator .winnerBox{
  border:1px solid var(--stroke);
  border-radius:12px;
  padding:10px;
  background:var(--card);
  min-width:0;
}

roi-calculator .barWrap{ height:10px; border-radius:999px; background:#e2e8f0; overflow:hidden; }
roi-calculator .bar{ height:10px; border-radius:999px; background:linear-gradient(90deg,var(--accent),var(--accent2)); }

@media(prefers-reduced-motion:no-preference){
  roi-calculator .bar{ transition:width .35s ease; }
}

roi-calculator .barNote{
  display:flex;
  justify-content:space-between;
  font-size:11px;
  color:#94a3b8;
  margin-top:5px;
}

roi-calculator .delta{
  font-size:12.5px;
  color:#16a34a;
  font-weight:700;
  margin-top:5px;
}

roi-calculator .warn{
  color:#b91c1c;
  font-size:12px;
  margin-top:5px;
}

roi-calculator .noscript{
  padding:12px;
  border-top:1px solid var(--stroke);
  color:var(--muted);
  font-weight:600;
}

/* mobile: suffix below (clean + readable) */
@media(max-width:520px){
  roi-calculator .inputs{ --ctrlW: 100%; }

  roi-calculator .unit{
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:6px;
  }

  roi-calculator .unit span{ align-self:flex-start; }
  roi-calculator .unit input[type="number"],
  roi-calculator .row select{ width:100%; max-width:100%; }
}

@media(max-width:420px){
  roi-calculator .controls{
    position:sticky;
    bottom:0;
    background:var(--card);
    padding:10px;
    border:1px solid var(--stroke);
    border-radius:12px;
    padding-bottom:calc(10px + var(--safeB));
  }
}

@media(max-width:360px){
  roi-calculator .section{
    padding:14px calc(14px + var(--safeL)) 14px calc(14px + var(--safeR));
  }
  roi-calculator .body{ padding:10px; }
  roi-calculator .split{ font-size:13.5px; }
}