/* Kalkulatorownia.pl — wspólne style. Mobile-first, szybkie, bez web-fontów. */
:root{
  --bg:#f6f7fb; --surface:#ffffff; --ink:#11131a; --muted:#5b6172;
  --line:#e6e8f0; --line-strong:#d3d7e6;
  --accent:#4338ca; --accent-2:#6d5ef0; --accent-soft:#eef0fe;
  --good:#0f8a4d; --good-soft:#e7f6ee; --warn:#b45309; --warn-soft:#fdf3e3;
  --bad:#c0314b; --bad-soft:#fdebef;
  --radius:14px; --radius-sm:10px; --shadow:0 1px 2px rgba(17,19,26,.05),0 6px 22px rgba(17,19,26,.06);
  --maxw:1080px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:"SFMono-Regular",ui-monospace,"Cascadia Mono","Roboto Mono",Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);
  line-height:1.62;font-size:17px;-webkit-font-smoothing:antialiased;overflow-wrap:break-word}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
h1,h2,h3,h4,h5,h6{line-height:1.2;margin:0 0 .5em;font-weight:740;letter-spacing:-.01em}
h1{font-size:clamp(1.55rem,4.6vw,2.3rem)}
h2{font-size:clamp(1.25rem,3.4vw,1.6rem);margin-top:1.6em}
h3{font-size:1.12rem;margin-top:1.3em}
h4{font-size:1rem;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 16px}
:focus-visible{outline:3px solid var(--accent-2);outline-offset:2px;border-radius:6px}

/* Skip link */
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#fff;padding:10px 14px;border-radius:0 0 8px 0;z-index:200}
.skip:focus{left:0}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line)}
.hdr{display:flex;align-items:center;gap:14px;height:60px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:1.06rem;color:var(--ink);letter-spacing:-.02em;flex:0 0 auto}
.brand:hover{text-decoration:none}
.brand .logo{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:18px}
.brand b{color:var(--accent)}
.nav{margin-left:auto;display:flex;gap:4px;align-items:center;overflow-x:auto;-webkit-overflow-scrolling:touch}
.nav a{color:var(--muted);font-weight:600;font-size:.95rem;padding:8px 10px;border-radius:8px;white-space:nowrap}
.nav a:hover{color:var(--ink);background:var(--accent-soft);text-decoration:none}

/* Hero / first screen */
.hero{padding:26px 0 8px}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;
  color:var(--accent);background:var(--accent-soft);padding:5px 11px;border-radius:999px;margin-bottom:12px}
.lead{font-size:1.06rem;color:var(--muted);max-width:65ch;margin-bottom:0}

/* Tool card (the calculator) */
.tool{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:20px;margin:18px 0}
@media(min-width:560px){.tool{padding:26px}}
.tabs{display:flex;gap:6px;flex-wrap:wrap;margin:-4px 0 16px;border-bottom:1px solid var(--line);padding-bottom:12px}
.tab{appearance:none;border:1px solid var(--line-strong);background:#fff;color:var(--muted);
  font:inherit;font-weight:650;font-size:.92rem;padding:9px 14px;border-radius:999px;cursor:pointer}
.tab[aria-selected="true"]{background:var(--accent);border-color:var(--accent);color:#fff}
.panel[hidden]{display:none}

.grid2{display:grid;gap:14px}
@media(min-width:560px){.grid2{grid-template-columns:1fr 1fr}}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
label{font-weight:650;font-size:.95rem}
label .hint{font-weight:500;color:var(--muted);font-size:.85rem}
input,select{font:inherit;font-size:16px;padding:13px 14px;border:1.5px solid var(--line-strong);
  border-radius:var(--radius-sm);background:#fff;color:var(--ink);width:100%;min-height:50px}
input:focus,select:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px var(--accent-soft)}
.inline{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}
.inline .field{flex:1 1 120px}
.row-item{display:flex;gap:10px;align-items:center;margin-bottom:8px}
.row-item input{flex:1}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.btn{appearance:none;cursor:pointer;font:inherit;font-weight:720;font-size:1.02rem;
  padding:14px 22px;border-radius:var(--radius-sm);border:0;background:var(--accent);color:#fff;min-height:52px;flex:1 1 auto}
.btn:hover{background:var(--accent-2)}
.btn.sec{background:#fff;color:var(--accent);border:1.5px solid var(--line-strong);flex:0 0 auto}
.btn.sec:hover{background:var(--accent-soft)}
.btn.ghost{background:transparent;color:var(--muted);border:0;flex:0 0 auto;padding:14px 12px}
.addbtn{background:var(--accent-soft);color:var(--accent);border:1px dashed var(--accent);font-weight:650;
  padding:11px 14px;border-radius:var(--radius-sm);cursor:pointer;font:inherit;font-weight:650}

/* Result "tape" — signature element */
.result{margin-top:18px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
.result[hidden]{display:none}
.result-top{background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;padding:18px 20px}
.result-top .big{font-size:clamp(1.7rem,7vw,2.4rem);font-weight:820;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.result-top .cap{font-size:.85rem;opacity:.92;letter-spacing:.04em;text-transform:uppercase;font-weight:600}
.result-grid{display:grid;gap:1px;background:var(--line);grid-template-columns:1fr 1fr}
.result-grid .cell{background:#fff;padding:13px 16px}
.result-grid .cell .k{font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-weight:600}
.result-grid .cell .v{font-size:1.12rem;font-weight:740;font-variant-numeric:tabular-nums}
.result-actions{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--line);flex-wrap:wrap}
.result-actions .btn{flex:0 0 auto;font-size:.92rem;padding:10px 14px;min-height:44px}
.note{font-size:.9rem;color:var(--muted);margin-top:12px}
.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.85rem;font-weight:700}
.badge.good{background:var(--good-soft);color:var(--good)}
.badge.warn{background:var(--warn-soft);color:var(--warn)}
.badge.bad{background:var(--bad-soft);color:var(--bad)}

/* Tables */
.tbl{width:100%;border-collapse:collapse;font-size:.94rem;margin:10px 0}
.tbl th,.tbl td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:right;font-variant-numeric:tabular-nums}
.tbl th:first-child,.tbl td:first-child{text-align:left}
.tbl thead th{color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.03em}
.scroll-x{overflow-x:auto}

/* Category grid (home) */
.cats{display:grid;gap:12px;grid-template-columns:1fr;margin:8px 0}
@media(min-width:560px){.cats{grid-template-columns:1fr 1fr}}
@media(min-width:880px){.cats{grid-template-columns:1fr 1fr 1fr}}
.cat{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.cat:hover{border-color:var(--accent);text-decoration:none;transform:translateY(-1px);transition:.15s}
.cat .ico{font-size:1.5rem}
.cat h3{margin:6px 0 4px;color:var(--ink)}
.cat p{margin:0;color:var(--muted);font-size:.92rem}
.cat ul{margin:10px 0 0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.cat ul a{font-size:.82rem;background:var(--accent-soft);color:var(--accent);padding:4px 10px;border-radius:999px}

/* Tool search */
.toolsearch{position:relative;margin:8px 0 4px}
.toolsearch input{padding-left:44px}
.toolsearch .mag{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted)}

/* Related / internal links */
.related{display:grid;gap:10px;grid-template-columns:1fr;margin-top:10px}
@media(min-width:560px){.related{grid-template-columns:1fr 1fr}}
.related a{display:block;border:1px solid var(--line);border-radius:var(--radius-sm);padding:14px 16px;background:#fff}
.related a:hover{border-color:var(--accent);text-decoration:none}
.related a b{display:block;color:var(--ink)}
.related a span{color:var(--muted);font-size:.88rem}

/* Prose / content blocks */
.prose{max-width:72ch}
.prose ul,.prose ol{margin:0 0 1em;padding-left:1.3em}
.prose li{margin:.3em 0}
.callout{background:var(--accent-soft);border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:8px;padding:14px 16px;margin:1em 0;font-size:.96rem}
.callout.med{background:var(--warn-soft);border-left-color:var(--warn)}

/* FAQ */
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);margin:8px 0;overflow:hidden}
.faq summary{cursor:pointer;padding:15px 18px;font-weight:680;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--accent);font-weight:800;font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 18px 16px;color:var(--muted)}

/* Breadcrumb */
.crumb{font-size:.86rem;color:var(--muted);padding:14px 0 0}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--accent)}

/* Ad slots */
.ad-slot{margin:20px 0;min-height:90px;display:flex;align-items:center;justify-content:center;
  background:repeating-linear-gradient(45deg,#fbfbfe,#fbfbfe 12px,#f4f5fb 12px,#f4f5fb 24px);
  border:1px dashed var(--line-strong);border-radius:var(--radius-sm);color:#aab;font-size:.8rem;letter-spacing:.05em}

/* Footer */
.site-footer{margin-top:48px;background:#0f1118;color:#c7cad6;padding:34px 0 22px;font-size:.93rem}
.site-footer h4{color:#fff;margin-bottom:.7em}
.foot-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:680px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr}}
.site-footer a{color:#aeb4c6}
.site-footer a:hover{color:#fff}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:.4em 0}
.foot-bottom{border-top:1px solid #232838;margin-top:26px;padding-top:16px;color:#8b91a6;font-size:.85rem}

/* Cookie bar */
.cookie{position:fixed;left:12px;right:12px;bottom:12px;z-index:300;background:#0f1118;color:#e7e9f2;
  border:1px solid #2a2f42;border-radius:var(--radius);padding:14px 16px;box-shadow:0 10px 40px rgba(0,0,0,.3);
  font-size:.9rem;max-width:880px;margin:0 auto}
.cookie[hidden]{display:none}
.cookie-main{display:flex;gap:12px 16px;align-items:center;flex-wrap:wrap}
.cookie-txt{margin:0;flex:1 1 300px}
.cookie a{color:#aeb4ff}
.cookie-btns{display:flex;gap:8px;flex-wrap:wrap;flex:0 0 auto;margin-left:auto}
.cookie .btn{min-height:42px;padding:10px 16px;font-size:.9rem}
.cookie .btn.sec,.cookie .btn.ghost{background:transparent;color:#d4d8f5;border:1px solid #3a4060}
.cookie .btn.sec:hover,.cookie .btn.ghost:hover{background:#1b1f30}
.cookie .btn.ghost{border-color:transparent;text-decoration:underline}
.cookie-opts{margin-top:12px;border-top:1px solid #2a2f42;padding-top:12px;display:flex;flex-direction:column;gap:10px}
.cookie-opts[hidden]{display:none}
.cookie-opt{display:flex;gap:10px;align-items:flex-start;line-height:1.45;color:#c9cde6}
.cookie-opt b{color:#e7e9f2;font-weight:650}
.cookie-opt input{margin-top:3px;flex:0 0 auto}
.cookie-save{margin-top:2px}

/* History */
.history{margin-top:14px;border-top:1px solid var(--line);padding-top:12px}
.history h4{margin-bottom:8px}
.history ol{list-style:none;margin:0;padding:0;font-size:.9rem}
.history li{padding:8px 0;border-bottom:1px solid var(--line);color:var(--muted);display:flex;justify-content:space-between;gap:10px}
.history time{color:#9aa0b4;font-size:.8rem;white-space:nowrap}
.history-empty{color:#9aa0b4;font-size:.9rem}

/* 404 */
.big404{font-size:clamp(4rem,18vw,8rem);font-weight:850;color:var(--accent);line-height:1;letter-spacing:-.04em}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* anchor offset for category deep-links from breadcrumbs */
[id^="kat-"]{scroll-margin-top:90px}