.ks-calc{
  --ks-accent:#e8590c;
  --ks-bg:#ffffff;
  --ks-panel:#f6f7f9;
  --ks-line:#e3e6ea;
  --ks-text:#1c2330;
  --ks-muted:#6b7686;
  --ks-ok:#2f9e44;
  --ks-warn:#f08c00;
  --ks-bad:#e03131;
  container-type:inline-size;
  box-sizing:border-box;
  max-width:900px;
  margin:1.5em auto;
  padding:20px;
  background:var(--ks-bg);
  border:1px solid var(--ks-line);
  border-radius:16px;
  box-shadow:0 8px 30px rgba(20,30,50,.07);
  color:var(--ks-text);
  font:14px/1.45 -apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
.ks-calc *{box-sizing:border-box}
.ks-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px}
.ks-title{margin:0!important;font-size:20px!important;font-weight:700;letter-spacing:-.01em}
.ks-title small{display:block;font-size:12px;font-weight:400;color:var(--ks-muted);letter-spacing:0}
.ks-grid{display:grid;grid-template-columns:1fr;gap:18px}
@container (min-width:680px){
  .ks-grid{grid-template-columns:270px 1fr}
}

/* formularz */
.ks-form{background:var(--ks-panel);border-radius:12px;padding:14px;display:grid;grid-template-columns:1fr 1fr;gap:10px 10px;align-content:start}
.ks-field{display:flex;flex-direction:column;gap:3px;min-width:0}
.ks-field.ks-wide{grid-column:1/-1}
.ks-form{align-items:end}
.ks-field{justify-content:flex-end}
.ks-field label{font-size:11.5px;line-height:1.25;color:var(--ks-muted);font-weight:600}
.ks-field>.ks-btn{width:100%;white-space:normal;text-align:center}
.ks-field label.ks-switch{font-size:12.5px;color:var(--ks-text);font-weight:500}
.ks-input{position:relative}
.ks-input input[type=number]{width:100%;min-width:0;-moz-appearance:textfield;appearance:textfield;padding:8px 30px 8px 10px;border:1px solid var(--ks-line);border-radius:8px;background:#fff;font:inherit;color:var(--ks-text);transition:border-color .15s,box-shadow .15s}
.ks-input input:focus{outline:none;border-color:var(--ks-accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--ks-accent) 20%,transparent)}
.ks-input span{position:absolute;right:9px;top:50%;transform:translateY(-50%);font-size:11px;color:var(--ks-muted);pointer-events:none}
.ks-steps{display:flex;gap:6px}
.ks-steps .ks-input{flex:1}
.ks-btn{border:0;border-radius:8px;padding:8px 12px;font:inherit;font-weight:600;cursor:pointer;background:var(--ks-accent);color:#fff;transition:filter .15s,transform .05s;white-space:nowrap}
.ks-btn:hover{filter:brightness(1.08)}
.ks-btn:active{transform:translateY(1px)}
.ks-btn.ks-ghost{background:#fff;color:var(--ks-text);border:1px solid var(--ks-line)}
.ks-seg{display:flex;background:#fff;border:1px solid var(--ks-line);border-radius:8px;padding:2px}
.ks-seg button{flex:1;border:0;background:transparent;padding:6px 8px;border-radius:6px;font:inherit;font-weight:600;color:var(--ks-muted);cursor:pointer}
.ks-seg button.on{background:var(--ks-accent);color:#fff}
.ks-switch{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:12.5px;color:var(--ks-text);font-weight:500}
.ks-switch input{position:absolute;opacity:0;pointer-events:none}
.ks-switch i{flex:none;width:34px;height:20px;border-radius:20px;background:#c9ced6;position:relative;transition:background .2s}
.ks-switch i::after{content:"";position:absolute;left:2px;top:2px;width:16px;height:16px;border-radius:50%;background:#fff;transition:transform .2s;box-shadow:0 1px 3px rgba(0,0,0,.3)}
.ks-switch input:checked+i{background:var(--ks-accent)}
.ks-switch input:checked+i::after{transform:translateX(14px)}
.ks-switch input:focus-visible+i{box-shadow:0 0 0 3px color-mix(in srgb,var(--ks-accent) 25%,transparent)}

/* wyniki */
.ks-out{display:flex;flex-direction:column;gap:14px;min-width:0}
.ks-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
@container (max-width:520px){.ks-cards{grid-template-columns:repeat(2,1fr)}}
.ks-card{background:var(--ks-panel);border-radius:12px;padding:10px 12px}
.ks-card b{display:block;font-size:20px;line-height:1.15;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.ks-card b em{font-style:normal;font-size:12px;color:var(--ks-muted);font-weight:500;margin-left:2px}
.ks-card span{font-size:11.5px;color:var(--ks-muted)}

.ks-comfort{border:1px solid var(--ks-line);border-radius:12px;padding:12px 14px}
.ks-comfort-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px}
.ks-badge{padding:3px 10px;border-radius:20px;color:#fff;font-weight:700;font-size:12px}
.ks-badge.ok{background:var(--ks-ok)}.ks-badge.warn{background:var(--ks-warn)}.ks-badge.bad{background:var(--ks-bad)}
.ks-gauge-cap{font-size:12px;color:var(--ks-muted);margin-bottom:10px}
.ks-hint{margin-top:10px;padding:8px 10px;border-radius:8px;background:color-mix(in srgb,var(--ks-warn) 14%,transparent);font-size:12.5px}
.ks-gauge{position:relative;height:10px;border-radius:10px;background:linear-gradient(90deg,var(--ks-bad) 0,var(--ks-warn) 22%,var(--ks-ok) 38%,var(--ks-ok) 62%,var(--ks-warn) 78%,var(--ks-bad) 100%)}
.ks-gauge u{position:absolute;top:-4px;width:6px;height:18px;margin-left:-3px;border-radius:3px;background:var(--ks-text);border:2px solid #fff;box-shadow:0 1px 4px rgba(0,0,0,.35);transition:left .25s}
.ks-gauge-l{display:flex;justify-content:space-between;font-size:10.5px;color:var(--ks-muted);margin-top:6px}
.ks-notes{margin:10px 0 0!important;padding:0!important;list-style:none!important;display:grid;gap:4px}
.ks-notes li{margin:0!important;padding-left:18px;position:relative;font-size:12.5px}
.ks-notes li::before{content:"";position:absolute;left:3px;top:6px;width:8px;height:8px;border-radius:50%;background:var(--c,var(--ks-ok))}
.ks-notes li.warn{--c:var(--ks-warn)}.ks-notes li.bad{--c:var(--ks-bad)}

.ks-draw{border:1px solid var(--ks-line);border-radius:12px;overflow:hidden}
.ks-tabs{display:flex;align-items:center;gap:4px;padding:6px;background:var(--ks-panel);border-bottom:1px solid var(--ks-line)}
.ks-tabs button{border:0;background:transparent;padding:6px 12px;border-radius:7px;font:inherit;font-weight:600;color:var(--ks-muted);cursor:pointer}
.ks-tabs button.on{background:#fff;color:var(--ks-text);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.ks-tabs .ks-btn{margin-left:auto;padding:5px 10px;font-size:12px}
.ks-svg{padding:8px;background:#fff}
.ks-svg svg{display:block;width:100%;height:auto;max-height:420px}

.ks-mat{width:100%;border-collapse:collapse;font-size:13px}
.ks-mat th,.ks-mat td{padding:7px 10px;border-bottom:1px solid var(--ks-line);text-align:left}
.ks-mat th{font-size:11.5px;color:var(--ks-muted);font-weight:600}
.ks-mat td:last-child{text-align:right;font-variant-numeric:tabular-nums;font-weight:600}
.ks-sec{margin:0 0 6px!important;font-size:13px!important;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--ks-muted)}
.ks-foot{margin-top:14px;font-size:11.5px;color:var(--ks-muted)}

/* legenda */
.ks-legend{margin-top:18px}
.ks-sec small{text-transform:none;letter-spacing:0;font-weight:400}
.ks-lg-grid{display:grid;grid-template-columns:1fr;gap:16px}
@container (min-width:680px){.ks-lg-grid{grid-template-columns:1.5fr 1fr}}
.ks-fig{border:1px solid var(--ks-line);border-radius:12px;overflow:hidden;background:#fff}
.ks-fig-t{padding:6px 12px;background:var(--ks-panel);border-bottom:1px solid var(--ks-line);font-size:12px;color:var(--ks-muted);text-transform:uppercase;letter-spacing:.05em}
.ks-fig svg{display:block;width:100%;height:auto}
.ks-stack{display:flex;flex-direction:column;gap:16px}
.ks-lg-list{list-style:none!important;margin:16px 0 0!important;padding:0!important;display:grid;gap:8px;grid-template-columns:1fr}
@container (min-width:680px){.ks-lg-list{grid-template-columns:1fr 1fr}}
.ks-lg-list li{display:flex;gap:10px;align-items:flex-start;background:var(--ks-panel);border-radius:10px;padding:8px 10px;margin:0!important}
.ks-lg-list .ks-b{flex:none;width:26px;height:26px;border-radius:50%;background:var(--ks-accent);color:#fff;font-weight:700;display:grid;place-items:center;font-size:13px}
.ks-lg-list .ks-b.ks-calc-b{background:#2f6fed}
.ks-lg-list b{display:block;font-size:13px}
.ks-lg-list span:not(.ks-b){font-size:12px;color:var(--ks-muted)}
.ks-lg-list em{font-style:normal;color:var(--ks-text);font-weight:600}

/* motyw ciemny motywu WP (opcjonalnie) */
@media (prefers-color-scheme:dark){
  .ks-calc.ks-auto-dark{--ks-bg:#171b22;--ks-panel:#1f242d;--ks-line:#2e3541;--ks-text:#e8ebf0;--ks-muted:#8f99a8}
  .ks-calc.ks-auto-dark .ks-input input,.ks-calc.ks-auto-dark .ks-seg,.ks-calc.ks-auto-dark .ks-btn.ks-ghost,.ks-calc.ks-auto-dark .ks-svg{background:#171b22}
}