/* Font serviti dal sito stesso: nessuna richiesta a server esterni. Licenza OFL, vedi fonts/*.txt */
@font-face{font-family:"Bricolage Grotesque";src:url("fonts/BricolageGrotesque-Regular.woff") format("woff");font-weight:400 500;font-display:swap}
@font-face{font-family:"Bricolage Grotesque";src:url("fonts/BricolageGrotesque-Bold.woff") format("woff");font-weight:600 800;font-display:swap}
@font-face{font-family:"Instrument Sans";src:url("fonts/InstrumentSans-Regular.woff") format("woff");font-weight:400 500;font-style:normal;font-display:swap}
@font-face{font-family:"Instrument Sans";src:url("fonts/InstrumentSans-Bold.woff") format("woff");font-weight:600 800;font-style:normal;font-display:swap}
@font-face{font-family:"Instrument Sans";src:url("fonts/InstrumentSans-Italic.woff") format("woff");font-weight:400 500;font-style:italic;font-display:swap}

/* Layout: una colonna editoriale; nel calcolatore, dati a sinistra e risultato fisso a destra su desktop */
:root{
  --bg:#ffffff;
  --ink:#141820;
  --muted:#5a6372;
  --line:#e3e6ec;
  --soft:#f4f6fa;
  --accent:#2347d4;
  --on-accent:#ffffff;
  --b1:#b9c3d4; --b2:#7e9cf4; --b3:#3c63e4; --b4:#14266f; --debt:#c4772d;
  --display:"Bricolage Grotesque", "Helvetica Neue", Arial, sans-serif;
  --body:"Instrument Sans", "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0f1218; --ink:#e8ebf1; --muted:#9aa3b2; --line:#262c37; --soft:#171b23;
    --accent:#7f9dff; --on-accent:#0f1218; --b1:#4a5568; --b2:#5d7fe6; --b3:#8aa6ff; --b4:#c9d5ff; --debt:#e0954f;
    color-scheme: dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0f1218; --ink:#e8ebf1; --muted:#9aa3b2; --line:#262c37; --soft:#171b23;
  --accent:#7f9dff; --on-accent:#0f1218; --b1:#4a5568; --b2:#5d7fe6; --b3:#8aa6ff; --b4:#c9d5ff; --debt:#e0954f;
  color-scheme: dark;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
h1,h2,h3{font-family:var(--display);font-weight:650;line-height:1.15;text-wrap:balance;margin:0}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
.narrow{max-width:700px}

/* header */
header.top{border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px;flex-wrap:wrap}
.logo{font-family:var(--display);font-weight:650;font-size:19px;color:var(--ink);text-decoration:none;letter-spacing:-.01em}
.logo span{color:var(--accent)}
nav.main{display:flex;gap:22px;font-size:15px}
nav.main a{color:var(--muted);text-decoration:none;padding:4px 0;border-bottom:2px solid transparent}
nav.main a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--accent)}

/* views */
.view{display:none}
.view.on{display:block}

/* hero */
.hero{padding:44px 0 28px;display:grid;grid-template-columns:1.25fr 1fr;gap:40px;align-items:end}
.hero h1{font-size:clamp(34px,5vw,54px);letter-spacing:-.02em}
.hero p.lede{font-size:19px;color:var(--muted);margin:16px 0 0;max-width:34em}
.stat{border-left:3px solid var(--accent);padding:4px 0 4px 18px}
.stat .num{font-family:var(--display);font-size:clamp(40px,5vw,56px);font-weight:650;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.stat .num small{font-size:.45em;font-weight:500;color:var(--muted);margin-left:4px}
.stat p{margin:10px 0 0;font-size:15px;color:var(--muted);line-height:1.5}

/* calculator */
.calc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:40px;padding:12px 0 56px;align-items:start}
.inputs{display:flex;flex-direction:column;gap:22px}
.note-example{font-size:13px;color:var(--muted);background:var(--soft);border-radius:999px;padding:4px 12px;align-self:flex-start}
.field label{display:block;font-weight:600;font-size:15px;margin-bottom:6px}
.field .hint{font-size:13.5px;color:var(--muted);margin:6px 0 0;line-height:1.45}
.money{display:flex;align-items:center;border:1px solid var(--line);border-radius:8px;background:var(--bg);overflow:hidden}
.money:focus-within{border-color:var(--accent)}
.money span{padding:0 12px;color:var(--muted);font-size:15px;background:var(--soft);align-self:stretch;display:flex;align-items:center;border-right:1px solid var(--line)}
.money input,.plain{flex:1;min-width:0;border:0;background:transparent;color:var(--ink);font:500 17px var(--body);padding:11px 12px;font-variant-numeric:tabular-nums}
.money input:focus,.plain:focus{outline:none}
.row2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px}
.money input{width:100%}
.stepper{display:flex;align-items:center;gap:0;border:1px solid var(--line);border-radius:8px;width:max-content}
.stepper button{border:0;background:var(--soft);color:var(--ink);width:42px;height:44px;font-size:20px;cursor:pointer}
.stepper button:hover{background:var(--line)}
.stepper output{min-width:96px;text-align:center;font-weight:600;font-variant-numeric:tabular-nums}

.block{border-top:1px solid var(--line);padding-top:20px}
.block h3{font-size:18px;margin-bottom:4px}
.block > p{margin:0 0 12px;font-size:14.5px;color:var(--muted)}
.items{display:flex;flex-direction:column;gap:10px}
.item{display:grid;grid-template-columns:1.2fr 1fr 1fr 36px;gap:8px;align-items:center}
.item input,.item select{width:100%;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font:400 15px var(--body);padding:9px 10px;font-variant-numeric:tabular-nums}
.item input:focus,.item select:focus{outline:none;border-color:var(--accent)}
.del{border:0;background:transparent;color:var(--muted);font-size:20px;cursor:pointer;height:38px;border-radius:6px}
.del:hover{background:var(--soft);color:var(--ink)}
.add{border:1px dashed var(--line);background:transparent;color:var(--accent);font:500 15px var(--body);padding:9px 14px;border-radius:8px;cursor:pointer;align-self:flex-start;margin-top:4px}
.add:hover{border-color:var(--accent)}
details.debts{border:1px solid var(--line);border-radius:10px;padding:0 16px}
details.debts summary{cursor:pointer;padding:14px 0;font-weight:600;font-size:15.5px;list-style:none;display:flex;justify-content:space-between;gap:12px}
details.debts summary::-webkit-details-marker{display:none}
details.debts summary::after{content:"+";color:var(--accent);font-size:20px;line-height:1}
details.debts[open] summary::after{content:"−"}
details.debts .inner{padding:0 0 16px}
details.debts .inner > p{margin:0 0 12px;font-size:14.5px;color:var(--muted)}

/* results */
.results{position:sticky;top:20px;background:var(--soft);border-radius:14px;padding:24px}
.results h2{font-size:22px;margin-bottom:4px}
.results .sub{font-size:14.5px;color:var(--muted);margin:0 0 18px}
.bar{display:flex;height:14px;border-radius:7px;overflow:hidden;background:var(--line);margin-bottom:20px}
.bar div{height:100%;transition:width .35s ease}
.buckets{display:flex;flex-direction:column;gap:12px}
.bucket{background:var(--bg);border-radius:10px;padding:16px 16px 14px 18px;border-left:5px solid var(--c)}
.bucket .head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.bucket .name{font-weight:600;font-size:15.5px}
.bucket .amt{font-family:var(--display);font-size:26px;font-weight:650;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.bucket .what{font-size:14px;color:var(--muted);margin:4px 0 8px;line-height:1.45}
.bucket .ex{font-size:13.5px;margin:0;padding:0;list-style:none;display:flex;flex-wrap:wrap;gap:6px}
.bucket .ex li{background:var(--soft);border-radius:999px;padding:3px 10px}
.bucket .gap{font-size:13.5px;color:var(--debt);margin:6px 0 0;font-weight:500}
.bucket.empty{opacity:.55}
/* riquadro del guadagno: è il messaggio principale del risultato */
.gain{background:var(--accent);color:var(--on-accent);border-radius:12px;padding:20px 22px;margin:0 0 20px}
.gain .lead{margin:0;font-size:15.5px;line-height:1.45}
.gain .big{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;margin:6px 0 4px}
.gain .big strong{font-family:var(--display);font-size:clamp(40px,5vw,52px);font-weight:650;line-height:1;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.gain .big span{font-size:17px;opacity:.9}
.gain .ten{margin:0;font-size:14.5px;opacity:.9}
.gain .fine{margin:10px 0 0;font-size:13px;opacity:.8}
.gain a{color:inherit}
.notes:empty{display:none}
.notes{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}
.notes p{margin:0 0 6px;font-size:13.5px;color:var(--muted)}
.alert{background:var(--bg);border:1px solid var(--debt);border-radius:10px;padding:12px 14px;font-size:14.5px;margin-bottom:16px}
details.plan{margin-top:18px;background:var(--bg);border-color:var(--line)}
details.plan .field{margin-bottom:16px}
.select{width:100%;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink);font:400 15.5px var(--body);padding:10px}
.select:focus{outline:none;border-color:var(--accent)}
.inline{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}
.inline .select{width:auto}
.plan-res{border-top:1px solid var(--line);padding-top:14px;font-size:15px}
.plan-res > p{margin:0 0 12px}
.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;counter-reset:s}
.steps li{display:grid;grid-template-columns:26px minmax(0,1fr) auto;gap:4px 10px;align-items:baseline;counter-increment:s}
.steps li::before{content:counter(s);font-size:13px;font-weight:600;color:var(--accent);background:var(--soft);border-radius:50%;width:24px;height:24px;display:grid;place-items:center;grid-row:span 2}
.steps .lbl{font-weight:600;font-size:14.5px}
.steps .val{font-variant-numeric:tabular-nums;font-weight:600;font-size:14.5px;text-align:right;white-space:nowrap}
.steps .det{grid-column:2 / 4;font-size:13.5px;color:var(--muted);line-height:1.45}
.steps li.final::before{content:"→"}
#tipoHint p{margin:0}
.disclaimer{font-size:12.5px;color:var(--muted);margin:16px 0 0;line-height:1.5}

/* prose pages */
.page{padding:44px 0 72px}
.kicker{font-size:14px;color:var(--muted);margin:0 0 10px}
.page h1{font-size:clamp(30px,4.2vw,44px);letter-spacing:-.02em;margin-bottom:14px}
.page .lede{font-size:19px;color:var(--muted);margin:0 0 30px}
.page h2{font-size:24px;margin:38px 0 10px}
.page h3{font-size:19px;margin:26px 0 6px}
.page p,.page li{max-width:65ch}
.page ul,.page ol{padding-left:1.2em}
.page li{margin-bottom:6px}
.formula{background:var(--soft);border-radius:8px;padding:12px 16px;font-variant-numeric:tabular-nums;font-size:15.5px;max-width:65ch}
.tbl{overflow-x:auto;margin:16px 0}
table{border-collapse:collapse;font-size:15px;min-width:560px;width:100%}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:600;font-size:14px;color:var(--muted)}
td{font-variant-numeric:tabular-nums}
.sources{font-size:14px;color:var(--muted);border-top:1px solid var(--line);margin-top:40px;padding-top:16px}
.sources ul{padding-left:1.1em}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin-top:10px}
.card{display:block;border:1px solid var(--line);border-radius:12px;padding:20px;text-decoration:none;color:var(--ink);transition:border-color .2s}
.card:hover{border-color:var(--accent)}
.card .n{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.card h3{font-size:20px;margin:6px 0 8px}
.card p{margin:0;font-size:15px;color:var(--muted)}
.back{display:inline-block;font-size:15px;margin-bottom:24px;text-decoration:none}

footer{border-top:1px solid var(--line);padding:28px 0 40px;font-size:14px;color:var(--muted)}
footer .wrap{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
footer p{margin:0;max-width:52ch}

@media (max-width:880px){
  .hero{grid-template-columns:1fr;gap:28px;padding-top:32px}
  .calc{grid-template-columns:1fr;gap:28px}
  .results{position:static}
}
@media (max-width:520px){
  body{font-size:16px}
  .row2{grid-template-columns:1fr}
  .item{grid-template-columns:1fr 1fr 36px}
  .item .desc{grid-column:1 / -1}
  nav.main{gap:16px}
}
@media (prefers-reduced-motion: reduce){ .bar div,.card{transition:none} }

/* colori dei contenitori tramite classi (niente stili in linea: compatibile con la CSP) */
[hidden]{display:none !important}
.k-b1{--c:var(--b1)} .k-b2{--c:var(--b2)} .k-b3{--c:var(--b3)} .k-b4{--c:var(--b4)} .k-debt{--c:var(--debt)}
.bar .seg{background:var(--c)}
.plan-res .fine{font-size:13.5px;color:var(--muted);margin:12px 0 0}
.plan-res .fine.warn{color:var(--debt)}
.stepper.second{margin-top:10px;font-size:17px;color:var(--ink)}
.noscript{margin:0;padding:12px 20px;background:var(--soft);font-size:15px}