/* Wspólne style podstron /kalkulatory/. Baza, nawigacja, sekcje i stopka skopiowane z /index.html - zmiany wprowadzać w obu plikach */
/* Fallback fonts z metrykami dopasowanymi do Montserrat / Open Sans,
   żeby zamiana fallback → webfont nie powodowała skoku układu (CLS) */
@font-face{
  font-family:"Montserrat Fallback";
  src:local("Arial");
  ascent-override:95%;
  descent-override:24.6%;
  line-gap-override:0%;
  size-adjust:109%;
}
@font-face{
  font-family:"Open Sans Fallback";
  src:local("Arial");
  ascent-override:100.7%;
  descent-override:27.6%;
  line-gap-override:0%;
  size-adjust:105.4%;
}

:root{
  --c-green-light:#E0E7DB;
  --c-green:#D7E0CA;
  --c-blue:#BBCCDB;
  --c-beige-light:#DFBDAB;
  --c-beige:#D9BFAA;
  --c-beige-warm:#B6A090;
  --c-brown:#795142;
  --c-gray-light:#C7C7C7;
  --c-gray:#A19E9D;
  --c-gray-dark:#7E7D7C;

  --bg:#FFFFFF;
  --ink:#795142;
  --ink-soft:#727170;
  --muted:#A19E9D;
  --line:#C7C7C7;

  --font-display:"Montserrat","Montserrat Fallback",-apple-system,BlinkMacSystemFont,sans-serif;
  --font-body:"Open Sans","Open Sans Fallback",-apple-system,BlinkMacSystemFont,sans-serif;

  --max:1280px;
  --gutter:clamp(20px,4vw,56px);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-soft);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--ink);color:#FFF}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:600;
  letter-spacing:-0.02em;
  line-height:1.1;
  margin:0;
  color:var(--ink);
}
p{margin:0}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}

.container{max-width:var(--max);margin:0 auto;padding-inline:var(--gutter)}
.eyebrow{
  font-family:var(--font-body);
  font-size:12px;
  font-weight:600;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{content:"";width:24px;height:1px;background:var(--ink)}

/* ============ NAV ============ */
.nav{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,0.88);
  backdrop-filter:saturate(160%) blur(14px);
  -webkit-backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .2s;
}
.nav.scrolled{border-bottom-color:var(--line)}
.nav-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding-block:18px;
}
.logo{
  font-family:var(--font-display);
  font-weight:700;
  font-size:20px;
  letter-spacing:-0.02em;
  color:var(--ink);
  display:inline-flex;
  align-items:baseline;
  gap:6px;
}
.logo-dot{
  width:8px;height:8px;background:var(--ink);
  border-radius:50%;display:inline-block;align-self:center
}
.nav-links{display:flex;gap:36px;align-items:center}
.nav-links a{
  font-size:14px;color:var(--ink-soft);font-weight:500;
  transition:color .15s;
}
.nav-links a:hover{color:var(--ink)}
.nav-cta{
  font-size:13px;
  font-weight:500;
  padding:9px 16px;
  border:1px solid var(--line);
  border-radius:999px;
  color:var(--ink);
  transition:all .2s;
}
.nav-cta:hover{background:var(--ink);color:#FFF;border-color:var(--ink)}

/* Hamburger */
.nav-burger{
  display:none;
  width:42px;height:42px;
  background:transparent;
  border:1px solid var(--line);
  border-radius:999px;
  padding:0;
  cursor:pointer;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  transition:border-color .2s;
}
.nav-burger:hover{border-color:var(--ink)}
.nav-burger span{
  display:block;
  width:16px;
  height:1.5px;
  background:var(--ink);
  border-radius:2px;
  transition:transform .25s ease, opacity .2s ease;
  transform-origin:center;
}
.nav-burger.open span:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* Mobile menu */
.mobile-menu{
  position:absolute;
  top:100%;
  left:0;right:0;
  background:#FFFFFF;
  border-bottom:1px solid var(--line);
  padding:24px 0 28px;
  transform:translateY(-12px);
  opacity:0;
  visibility:hidden;
  transition:transform .25s ease, opacity .2s ease, visibility .25s;
}
.mobile-menu.open{
  transform:translateY(0);
  opacity:1;
  visibility:visible;
}
.mobile-menu .container{display:flex;flex-direction:column;gap:4px}
.mobile-menu a{
  font-family:var(--font-display);
  font-size:22px;
  font-weight:600;
  color:var(--ink);
  letter-spacing:-0.01em;
  padding:10px 0;
  border-bottom:1px solid var(--line);
}
.mobile-menu a:last-child{border-bottom:none;margin-top:14px;font-size:15px;font-weight:500}

@media (max-width:760px){
  .nav-links{display:none}
  .nav-inner > .nav-cta{display:none}
  .nav-burger{display:flex}
}

/* ============ SECTIONS ============ */
section{padding:clamp(80px,11vw,140px) 0}
#grupa{padding-top:clamp(40px,5vw,72px);padding-bottom:0}
.section-head{max-width:760px;margin-bottom:clamp(48px,6vw,72px)}
.section-head h2{
  font-size:clamp(32px,4vw,56px);
  font-weight:600;
  margin-top:22px;
  letter-spacing:-0.02em;
}
.section-head p{
  font-size:clamp(16px,1.1vw,17px);
  color:var(--ink-soft);
  margin-top:22px;
  max-width:58ch;
}
.section-head p strong{color:var(--ink);font-weight:600}

.section-head h1{
  font-size:clamp(32px,4vw,56px);
  font-weight:600;
  margin-top:22px;
  letter-spacing:-0.02em;
}
.pillar-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:28px;
  font-size:14px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid currentColor;
  padding-bottom:2px;
  transition:gap .2s;
}
.pillar-link:hover{gap:14px}


/* ============ KALKULATOR ============ */
.calc-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px;align-items:end}
.calc-grid{display:grid;grid-template-columns:1fr;gap:32px;align-items:start}
@media (min-width:980px){.calc-grid{grid-template-columns:1fr 1.6fr;gap:clamp(40px,5vw,64px)}}
.calc-form{display:flex;flex-direction:column;gap:14px}
.calc-form label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--ink)}
.calc-form label[hidden]{display:none}
.calc-form input,.calc-form select{
  width:100%;
  padding:14px 16px;
  border:1px solid var(--line);
  border-radius:8px;
  background:#FFFFFF;
  font-family:var(--font-body);
  font-size:15px;
  color:var(--ink);
}
.calc-form input:focus,.calc-form select:focus{outline:none;border-color:var(--ink)}
.calc-results{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px}
.calc-card{border:1px solid var(--line);border-radius:8px;padding:22px}
.calc-card.best{border-color:var(--ink);background:var(--c-green-light)}
.calc-card h2{font-size:17px}
.calc-card p{font-size:14px;margin-top:10px;line-height:1.6}
a.calc-card{display:block;transition:border-color .2s, transform .2s}
a.calc-card:hover{border-color:var(--ink);transform:translateY(-2px)}
.calc-index{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.calc-extra{
  margin-top:clamp(56px,7vw,96px);
  padding-top:clamp(56px,7vw,96px);
  border-top:1px solid var(--line);
}
.calc-extra > *{max-width:760px}
.bar-chart{display:flex;gap:clamp(2px,0.8vw,10px);height:260px;margin:36px 0 28px}
.bar{flex:1;min-width:0;display:flex;flex-direction:column;align-items:center}
.bar-plot{
  flex:1;
  width:100%;
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  align-items:center;
  padding-top:24px;
  border-bottom:1px solid var(--line);
}
.bar-fill{position:relative;width:100%;background:var(--ink);border-radius:4px 4px 0 0;transition:opacity .15s}
.bar:hover .bar-fill{opacity:.75}
.bar-val{position:absolute;bottom:100%;left:0;font-size:12px;font-weight:600;color:var(--ink);white-space:nowrap;margin-bottom:6px}
.bar:last-child .bar-val{left:auto;right:0}
.bar-x{font-size:11px;color:var(--ink-soft);margin-top:8px;white-space:nowrap;font-variant-numeric:tabular-nums}
@media (max-width:640px){.bar-century{display:none}}
.calc-extra h2{font-size:clamp(22px,2.4vw,30px)}
.calc-extra p{margin-top:14px}
.calc-table{width:100%;border-collapse:collapse;margin-top:18px;font-size:13px;font-variant-numeric:tabular-nums}
.calc-table th,.calc-table td{text-align:left;padding:8px 10px 8px 0;border-top:1px solid var(--line)}
.calc-table th{font-size:11px;letter-spacing:0.08em;text-transform:uppercase;color:var(--muted)}
.calc-badge{
  display:none;
  margin-top:8px;
  font-size:11px;
  font-weight:600;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--ink);
}
.calc-card.best .calc-badge{display:block}
.calc-card dl{margin:16px 0 0}
.calc-card dt{font-size:12px;color:var(--ink-soft);margin-top:12px}
.calc-card dd{
  margin:2px 0 0;
  font-family:var(--font-display);
  font-weight:600;
  font-size:17px;
  color:var(--ink);
  font-variant-numeric:tabular-nums;
}
.calc-note{font-size:13px;color:var(--ink-soft);line-height:1.6;margin-top:18px}

/* ============ FOOTER ============ */
footer{
  background:var(--c-green-light);
  padding:72px 0 30px;
  font-size:13px;
}
.foot-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:48px 32px;
  margin-bottom:56px;
}
.foot-col h4{
  font-family:var(--font-body);
  font-size:11px;
  font-weight:700;
  text-transform:uppercase;
  letter-spacing:0.1em;
  color:var(--ink-soft);
  margin-bottom:18px;
}
.foot-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.foot-col a{color:var(--ink-soft);transition:color .15s}
.foot-col a:hover{color:var(--ink)}
.foot-bottom{
  display:flex;
  justify-content:space-between;
  align-items:flex-end;
  gap:24px;
  flex-wrap:wrap;
  padding-top:30px;
  border-top:1px solid var(--c-gray-light);
  color:var(--ink-soft);
  font-size:11px;
}
.foot-bottom .legal{display:flex;gap:24px;flex-wrap:wrap}
.foot-bottom .legal a:hover{color:var(--ink)}