/* Compensa Importar? — shared styles.
   Layout: one centred column for reading; the calculator splits into form + sticky receipt on wide screens. */
:root{
  --bg:#f3f4f6; --surface:#ffffff; --ink:#151a23; --muted:#5b6474; --line:#d9dde4;
  --accent:#1e3f94; --accent-soft:#e6ecf8; --on-accent:#ffffff;
  --plate:#f5c518;
  --good:#13795b; --good-soft:#e3f3ec; --bad:#b4302a; --bad-soft:#f8e5e3;
  --display:"Barlow Semi Condensed","Arial Narrow",system-ui,sans-serif;
  --body:"Barlow",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r:10px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0f131a; --surface:#171c25; --ink:#e8ebf0; --muted:#9aa3b2; --line:#2b3240;
  --accent:#7d9cf0; --accent-soft:#1d2740; --on-accent:#0f131a;
  --good:#4cc89a; --good-soft:#123128; --bad:#ff8a80; --bad-soft:#3a1c1b; color-scheme:dark}}

*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 var(--body)}
img{max-width:100%;height:auto}
a{color:var(--accent)}
h1,h2,h3{font-family:var(--display);line-height:1.12;text-wrap:balance;margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:1120px;margin:0 auto;padding-inline:16px}
.skip{position:absolute;left:-999px}.skip:focus{left:16px;top:8px;background:var(--surface);padding:8px 12px;z-index:50}

/* header / footer */
.top{background:var(--surface);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:700 22px var(--display)}
.brand .mini{display:inline-grid;grid-template-columns:9px 1fr 5px;width:44px;height:22px;border:1.5px solid var(--ink);border-radius:4px;overflow:hidden;background:#fff}
.brand .mini i:first-child{background:#1e3f94}.brand .mini i:last-child{background:var(--plate)}
.nav{display:flex;gap:4px 18px;flex-wrap:wrap}
.nav a{color:var(--ink);text-decoration:none;font-weight:600;font-size:15.5px;padding:6px 0}
.nav a:hover,.nav a[aria-current]{color:var(--accent)}
footer{margin-top:56px;border-top:1px solid var(--line);background:var(--surface);font-size:14.5px;color:var(--muted)}
footer .wrap{padding-block:28px;display:grid;gap:10px}
footer nav{display:flex;flex-wrap:wrap;gap:6px 18px}
footer a{color:var(--muted)}

/* hero */
.hero{padding-block:32px 20px;display:grid;gap:10px;max-width:760px}
.eyebrow{font:600 13px/1 var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--accent)}
.hero h1{font-size:clamp(36px,6.5vw,56px)}
.hero p{margin:0;color:var(--muted);font-size:18px}
.example{font-size:14.5px;color:var(--muted)}.example b{color:var(--ink);font-weight:600}

/* calculator */
.calc{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:28px;align-items:start}
@media (max-width:900px){.calc{grid-template-columns:minmax(0,1fr)}}
form{display:grid;gap:18px;min-width:0}
fieldset{border:1px solid var(--line);border-radius:var(--r);background:var(--surface);margin:0;padding:18px;display:grid;gap:14px;min-width:0}
legend{font:700 21px/1 var(--display);padding:0 6px;margin-left:-6px}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px}
label{display:grid;gap:5px;font-size:14.5px;font-weight:500;min-width:0}
.hint{font-size:13px;color:var(--muted);font-weight:400}
input,select{font:inherit;font-size:16px;font-variant-numeric:tabular-nums;width:100%;min-height:44px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--ink)}
.unit{position:relative;display:block}
.unit input{padding-right:56px}
.unit span{position:absolute;right:10px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:14px;pointer-events:none}
.narrow{max-width:260px}
.check{display:flex;gap:10px;align-items:flex-start;font-weight:400}
.check input{width:20px;min-height:20px;height:20px;margin-top:3px;flex:none;accent-color:var(--accent)}
.seg{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.seg label{display:block;cursor:pointer;position:relative}
.seg input{position:absolute;opacity:0;width:1px;height:1px}
.seg span{display:flex;align-items:center;justify-content:center;min-height:44px;padding:6px 10px;text-align:center;font-weight:600;font-size:15px;background:var(--surface);color:var(--muted)}
.seg input:checked+span{background:var(--accent);color:var(--on-accent)}
.seg input:focus-visible+span{outline:2px solid var(--accent);outline-offset:-4px}
.lbl{font-size:14.5px;font-weight:500}
.note{font-size:13.5px;color:var(--muted);margin:0}
.warn{font-size:14px;margin:0;padding:8px 10px;border-radius:8px;background:var(--bad-soft);color:var(--bad)}

aside.sum{position:sticky;top:16px;display:grid;gap:14px}
@media (max-width:900px){aside.sum{position:static}}
.receipt{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:grid;gap:14px}
.receipt h2{font-size:24px}
.lines{list-style:none;margin:0;padding:0;display:grid}
.lines li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line);font-variant-numeric:tabular-nums}
.lines li span:first-child{color:var(--muted)}
.lines li b{font-weight:600}
.total{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-variant-numeric:tabular-nums}
.total span{font:700 18px var(--display)}
.total b{font:700 30px var(--display)}
.cmp{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.plate{display:grid;grid-template-columns:34px 1fr 14px;border:2px solid #151a23;border-radius:8px;overflow:hidden;background:#fff;color:#111;min-height:68px}
.plate .eu{background:#1e3f94;color:#fff;display:grid;place-items:end center;padding-bottom:6px;font:700 15px var(--display)}
.plate .txt{display:grid;place-items:center;text-align:center;padding:6px 8px;font:700 clamp(22px,4vw,27px)/1.05 var(--display);letter-spacing:.04em;text-transform:uppercase}
.plate .txt small{display:block;font:500 13px var(--body);letter-spacing:0;text-transform:none;color:#333}
.plate .side{background:var(--plate)}
.plate.bad .txt{color:#8c1d18}.plate.good .txt{color:#0d5a43}
details{border-top:1px solid var(--line);padding-top:10px}
summary{cursor:pointer;font-weight:600;font-size:15px;color:var(--accent);min-height:32px;display:flex;align-items:center}
.isv{list-style:none;margin:8px 0 0;padding:0;display:grid;gap:4px;font-size:14px;font-variant-numeric:tabular-nums}
.isv li{display:flex;justify-content:space-between;gap:10px}
.isv li span:first-child{color:var(--muted)}
.yearly{background:var(--accent-soft);border-radius:var(--r);padding:16px 18px;display:grid;gap:6px;font-variant-numeric:tabular-nums}
.yearly h3{font-size:18px}
.yearly div{display:flex;justify-content:space-between;gap:10px;font-size:15px}
.fine{font-size:12.5px;color:var(--muted);margin:0}
.bar{display:none}
@media (max-width:900px){
  .bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:10;justify-content:space-between;align-items:center;gap:12px;
    background:var(--surface);border-top:1px solid var(--line);padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));font-variant-numeric:tabular-nums}
  .bar b{font:700 22px var(--display)}
  .bar a{font-weight:600}
  body.has-bar{padding-bottom:72px}
}

/* sections & cards */
.section{margin-top:48px;display:grid;gap:16px}
.section>h2{font-size:clamp(26px,4vw,34px)}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}
.card{display:grid;gap:6px;align-content:start;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:18px;text-decoration:none;color:var(--ink)}
.card:hover{border-color:var(--accent)}
.card h3{font-size:21px}
.card p{margin:0;color:var(--muted);font-size:15.5px}
.card .go{color:var(--accent);font-weight:600;font-size:15px}
.steps{list-style:none;margin:0;padding:0;display:grid;gap:12px;counter-reset:s}
.steps li{counter-increment:s;display:grid;grid-template-columns:36px minmax(0,1fr);gap:12px;align-items:start}
.steps li::before{content:counter(s);width:36px;height:36px;border-radius:50%;background:var(--accent);color:var(--on-accent);display:grid;place-items:center;font:700 17px var(--display)}
.steps b{display:block}

/* article */
.article{max-width:720px;padding-block:32px 0}
.article h1{font-size:clamp(32px,5.5vw,46px);margin-bottom:10px}
.article .lead{font-size:19px;color:var(--muted);margin:0 0 8px}
.article .meta{font-size:14px;color:var(--muted);margin:0 0 24px}
.article h2{font-size:28px;margin:36px 0 10px}
.article h3{font-size:21px;margin:24px 0 6px}
.article p,.article li{max-width:68ch}
.article ul,.article ol{padding-left:22px}
.article li{margin:4px 0}
.box{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:8px;padding:14px 16px;margin:20px 0}
.box.warn-box{border-left-color:var(--bad)}
.box p{margin:0}
.tbl{overflow-x:auto;margin:16px 0;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:15px;font-variant-numeric:tabular-nums}
th,td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
th{font-weight:600;background:var(--accent-soft)}
tr:last-child td{border-bottom:0}
.cta{display:inline-flex;align-items:center;min-height:46px;padding:0 18px;border-radius:8px;background:var(--accent);color:var(--on-accent);text-decoration:none;font-weight:600;margin-top:8px}
.crumbs{font-size:14px;color:var(--muted);margin:0 0 12px}
.crumbs a{color:var(--muted)}