/* ==========================================================================
   Italia Betting — Manuale delle scommesse
   Style: Swiss Modernism 2.0 (grid system, rational, asymmetric, hairlines)
   Skeleton: FAQ / Documentation landing
   Palette: tricolore — panna calda, verde bottiglia come superficie, rosso come segnale.
   Type: Instrument Serif (display) / Piazzolla (body) / DM Mono (labels, figures)
   ========================================================================== */

:root{
  /* colour — tricolore: verde bottiglia come superficie, rosso come segnale,
     panna calda al posto del bianco clinico */
  --carta:#F6F1E5;
  --foglio:#FFFCF5;
  --inchiostro:#16130D;
  --inchiostro-2:#453F33;
  --inchiostro-3:#6E675A;
  --riga:#D9CFB9;
  --riga-2:#EAE3D2;
  --verde:#0C5C3B;
  --verde-scuro:#08442C;
  --verde-velo:#E6EDE4;
  --verde-chiaro:#8FC0A4;
  --rosso:#B62329;
  --rosso-chiaro:#E9938C;
  --rosso-velo:#F6E7E2;
  /* legacy accent names kept pointing at the new primary so nothing silently
     falls back to an unset variable */
  --azzurro:var(--verde);
  --azzurro-scuro:var(--verde-scuro);
  --azzurro-velo:var(--verde-velo);

  /* spacing — mathematical scale */
  --s1:.5rem; --s2:1rem; --s3:1.5rem; --s4:2rem; --s5:3rem; --s6:4rem; --s7:6rem;

  /* type */
  --display:"Instrument Serif",Georgia,serif;
  --testo:"Piazzolla",Georgia,serif;
  --mono:"DM Mono",ui-monospace,Menlo,monospace;

  --col:1160px;
  --gutter:clamp(1.25rem,4vw,2.5rem);
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--carta);
  color:var(--inchiostro);
  font-family:var(--testo);
  font-size:17px;
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;height:auto;display:block}

a{color:var(--verde);text-decoration:underline;text-underline-offset:.18em;text-decoration-thickness:.06em}
a:hover{color:var(--rosso)}
a:focus-visible,button:focus-visible,summary:focus-visible{
  outline:2px solid var(--rosso);outline-offset:3px;border-radius:1px;
}

h1,h2,h3,h4{font-family:var(--display);font-weight:400;letter-spacing:-.01em;line-height:1.12;margin:0}
h1{font-size:clamp(2.4rem,5.4vw,3.9rem)}
h2{font-size:clamp(1.75rem,3.4vw,2.6rem)}
h3{font-size:clamp(1.3rem,2.2vw,1.65rem);line-height:1.2}
h4{font-size:1.15rem;line-height:1.3}

p{margin:0 0 var(--s2)}

.wrap{max-width:var(--col);margin-inline:auto;padding-inline:var(--gutter)}

.skip{position:absolute;left:-9999px}
.skip:focus{
  left:var(--s2);top:var(--s2);z-index:50;background:var(--inchiostro);color:#fff;
  padding:.6rem 1rem;font-family:var(--mono);font-size:.8rem;text-decoration:none;
}

/* micro label — the Swiss signature device, used everywhere */
.lab{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--inchiostro-3);margin:0 0 var(--s2);
}
.lab--azz{color:var(--rosso)}

/* ==========================================================================
   MASTHEAD — asymmetric: brand left, nav right, legal line beneath the nav
   ========================================================================== */
/* the tricolour strip: three flat blocks, hard stops — a flag, not a gradient */
/* flag greens, not the surface green — otherwise the first third disappears
   into the masthead below it */
.tricolore{height:6px;background:linear-gradient(90deg,
  #009246 0 33.333%, #FFFCF5 33.333% 66.666%, #CE2B37 66.666% 100%)}

.mast{background:var(--verde);color:#F4EFE3;border-bottom:1px solid var(--verde-scuro)}
.mast__in{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:var(--s3);align-items:end;padding-block:var(--s3) var(--s2);
}
.brand{display:block;text-decoration:none;color:#FFFCF5}
.brand:hover{color:#FFFCF5}
.brand__name{
  display:block;font-family:var(--display);font-size:clamp(1.7rem,3.2vw,2.3rem);
  line-height:1;letter-spacing:-.015em;
}
.brand__sub{
  display:block;font-family:var(--mono);font-size:.68rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--verde-chiaro);margin-top:.5rem;
}
.mast__r{display:flex;flex-direction:column;align-items:flex-start;gap:var(--s2)}

.nav{display:flex;flex-wrap:wrap;gap:0 var(--s3);margin-left:auto}
/* rule 1: <a> and .is-current must render IDENTICALLY — active state is colour
   + border-bottom-color only, and the border is reserved on both. */
.nav a,.nav .is-current{
  font-family:var(--mono);font-size:.8rem;letter-spacing:.06em;text-transform:uppercase;
  font-weight:400;line-height:1;text-decoration:none;color:#D8E4D8;
  padding:.75rem 0;display:inline-block;min-height:44px;
  border-bottom:2px solid transparent;
}
.nav a:hover{color:#FFFCF5}
.nav .is-current{color:#FFFCF5;border-bottom-color:var(--rosso-chiaro)}

.mast__legal{
  margin:0 0 0 auto;font-family:var(--mono);font-size:.68rem;letter-spacing:.05em;
  color:var(--verde-chiaro);text-align:right;
}

/* ==========================================================================
   DOC HEAD — the answer-first documentation block (§ number + question)
   ========================================================================== */
.doc{background:var(--foglio);border-bottom:1px solid var(--riga)}
.doc__in{
  display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:var(--s5) var(--s6);padding-block:var(--s6) var(--s5);align-items:start;
}
.doc__l>*:last-child,.doc__r>*:last-child{margin-bottom:0}
.doc__l h1{margin-bottom:var(--s3)}
.doc__hint{font-size:1.05rem;color:var(--inchiostro-2);max-width:46ch}
.doc__r .lead{font-size:1.12rem;line-height:1.6}

/* breadcrumb */
.crumb{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--inchiostro-3);margin:0 0 var(--s3)}
.crumb a{color:var(--inchiostro-3)}
.crumb a:hover{color:var(--rosso)}

/* key/value rail used in the doc head */
.kv{margin:0;display:grid;grid-template-columns:auto 1fr;gap:.55rem var(--s2);
  border-top:1px solid var(--inchiostro);padding-top:var(--s2)}
.kv dt{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--inchiostro-3)}
.kv dd{margin:0;font-size:.95rem}

/* ==========================================================================
   SECTION scaffolding
   ========================================================================== */
.sec{padding-block:var(--s6)}
.sec--foglio{background:var(--foglio);border-block:1px solid var(--riga)}
.sec__head{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:var(--s3) var(--s6);align-items:baseline;
  border-bottom:1px solid var(--inchiostro);padding-bottom:var(--s3);margin-bottom:var(--s5);
}
.sec__head p{margin:0}
.sec__intro{color:var(--inchiostro-2);max-width:60ch}

/* ==========================================================================
   INDEX with dotted leaders — the site's signature navigation block
   ========================================================================== */
.idx{list-style:none;margin:0;padding:0;counter-reset:none}
.idx li+li{border-top:1px solid var(--riga-2)}
.idx a{
  display:flex;align-items:baseline;gap:var(--s2);text-decoration:none;
  color:var(--inchiostro);padding:1rem 0;min-height:44px;
}
.idx a:hover .idx__t{color:var(--verde)}
.idx a:hover .idx__n{color:var(--rosso)}
.idx__n{font-family:var(--mono);font-size:.8rem;color:var(--rosso);flex:0 0 2.6rem}
.idx__t{font-family:var(--display);font-size:1.3rem;line-height:1.25;flex:0 1 auto}
.idx__lead{flex:1 1 auto;border-bottom:1px dotted #AEB5BF;transform:translateY(-.28em);min-width:1.5rem}
.idx__p{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--inchiostro-3);flex:0 0 auto}
.idx__d{display:block;color:var(--inchiostro-2);font-size:.95rem;margin:.15rem 0 0 3.6rem;max-width:64ch}
.idx__d--pad{margin-left:3.6rem}

/* an index entry that is not yet published: deliberately NOT a link */
.idx__soon{display:flex;align-items:baseline;gap:var(--s2);padding:1rem 0;color:var(--inchiostro-3)}
.idx__soon .idx__t{color:var(--inchiostro-3)}

/* ==========================================================================
   FAQ accordion — native <details>, no JavaScript anywhere on this site
   ========================================================================== */
.qa{border-top:1px solid var(--riga);background:transparent}
.qa:last-of-type{border-bottom:1px solid var(--riga)}
.qa>summary{
  cursor:pointer;list-style:none;padding:1.15rem var(--s5) 1.15rem 0;position:relative;
  font-family:var(--display);font-size:1.22rem;line-height:1.3;min-height:44px;
}
.qa>summary::-webkit-details-marker{display:none}
.qa>summary::after{
  content:"+";position:absolute;right:.35rem;top:1rem;
  font-family:var(--mono);font-size:1.25rem;color:var(--rosso);transition:transform .2s ease;
}
.qa[open]>summary{color:var(--verde)}
.qa[open]>summary::after{content:"–"}
.qa>summary:hover{color:var(--verde)}
.qa__body{padding:0 var(--s5) var(--s4) 0;max-width:70ch}
.qa__body>*:last-child{margin-bottom:0}

/* ==========================================================================
   REFERENCE TABLE — mono figures, hairlines, no zebra fills
   ========================================================================== */
.tblwrap{overflow-x:auto;border:1px solid var(--riga);background:var(--foglio)}
.tbl{width:100%;border-collapse:collapse;min-width:34rem}
.tbl caption{
  text-align:left;font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--inchiostro-3);padding:var(--s3) var(--s3) var(--s2);
}
.tbl th,.tbl td{padding:.85rem var(--s3);text-align:left;vertical-align:top;
  border-top:1px solid var(--riga-2);font-size:.95rem}
.tbl thead th{
  font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;
  font-weight:400;color:#EAF1E8;background:var(--verde);
  border-top:1px solid var(--verde);border-bottom:1px solid var(--verde);
}
.tbl caption{border-left:3px solid var(--rosso)}
.tbl .num{font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}

/* ==========================================================================
   OPERATORS — two-column definition entries, no cards, no scores
   ========================================================================== */
.ops{margin:0;padding:0}
.op{
  display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);
  gap:var(--s3) var(--s6);padding-block:var(--s4);border-top:1px solid var(--riga);
}
.op:last-child{border-bottom:1px solid var(--riga)}
.op__id>*{margin:0}
.op__n{font-family:var(--mono);font-size:.8rem;color:var(--rosso);display:block;margin-bottom:.4rem}
.op__gruppo{font-family:var(--mono);font-size:.75rem;letter-spacing:.06em;color:var(--inchiostro-3);
  margin-top:.5rem;display:block}
.op__body>*:last-child{margin-bottom:0}
.op__facts{list-style:none;margin:0 0 var(--s2);padding:0;display:flex;flex-wrap:wrap;gap:.4rem .5rem}
.op__facts li{
  font-family:var(--mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;
  border:1px solid var(--riga);padding:.35rem .55rem;color:var(--inchiostro-2);background:var(--foglio);
}
.op__facts li.is-adm{border-color:var(--verde);color:#EAF1E8;background:var(--verde)}
.op__links{display:flex;flex-wrap:wrap;gap:var(--s3);align-items:center;margin-top:var(--s2)}
.op__links a{font-family:var(--mono);font-size:.78rem;letter-spacing:.05em}
.op__soon{font-family:var(--mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;
  color:var(--inchiostro-3)}

/* ==========================================================================
   NOTE / WARNING BAND — ink block, the only dark surface on the site
   ========================================================================== */
.nota{background:var(--verde-scuro);color:#EAF1E8}
.nota .wrap{padding-block:var(--s5)}
.nota__in{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:var(--s3) var(--s6)}
.nota h2{color:#FFFCF5}
.nota .lab{color:var(--verde-chiaro)}
.nota a{color:#F3C9C2}
.nota a:hover{color:#FFFCF5}
.nota strong{color:#FFFCF5}
.nota__in>div>*:last-child{margin-bottom:0}

/* ==========================================================================
   PROSE — article body for the manual pages
   ========================================================================== */
.art{padding-block:var(--s6)}
.art__in{display:grid;grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:var(--s5) var(--s6);align-items:start}
.prose{max-width:68ch}
.prose h2{margin:var(--s5) 0 var(--s2)}
.prose h2:first-child{margin-top:0}
.prose h3{margin:var(--s4) 0 var(--s1)}
.prose ul,.prose ol{margin:0 0 var(--s2);padding-left:1.35rem}
.prose li{margin-bottom:.45rem}
.prose>*:last-child{margin-bottom:0}
.prose .tblwrap{margin-bottom:var(--s3)}

/* ==========================================================================
   PHOTOGRAPHS — hairline frame, flag rule beneath, credit always attached.
   No filter, no duotone: a photograph is never repainted to match the palette.
   ========================================================================== */
.artimg{margin:0 0 var(--s4);max-width:100%}
.artimg img{
  width:100%;height:auto;display:block;
  border:1px solid var(--riga);
  border-bottom:4px solid var(--verde);
}
.credit{
  display:block;margin-top:.6rem;font-family:var(--mono);font-size:.7rem;
  line-height:1.6;letter-spacing:.02em;color:var(--inchiostro-3);
}
.credit a{color:var(--inchiostro-3);text-decoration:underline}
.credit a:hover{color:var(--rosso)}
.credit__cap{
  display:block;font-family:var(--testo);font-size:.92rem;letter-spacing:0;
  color:var(--inchiostro-2);margin-bottom:.35rem;
}
/* a photo used as a full-width band inside a section */
.fascia .artimg img{border-bottom-width:6px}

/* the credits index */
.crediti{list-style:none;margin:0;padding:0}
.crediti li{border-top:1px solid var(--riga);padding:var(--s3) 0}
.crediti li:last-child{border-bottom:1px solid var(--riga)}
.crediti figure{margin:0;display:grid;grid-template-columns:220px minmax(0,1fr);
  gap:var(--s3) var(--s4);align-items:start}
.crediti img{width:100%;height:auto;border:1px solid var(--riga)}
.crediti figcaption{font-size:.95rem}
.crediti .lab{margin-bottom:.4rem}
@media (max-width:760px){.crediti figure{grid-template-columns:minmax(0,1fr)}}

/* an inline worked example — a framed box, generous inner padding (rule 3) */
.esempio{
  border:1px solid var(--riga);border-left:4px solid var(--verde);background:var(--foglio);
  padding:var(--s3) var(--s4);margin:0 0 var(--s3);
}
.esempio>*:last-child{margin-bottom:0}
.esempio .lab{margin-bottom:.75rem}
.esempio .calc{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:.95rem;
  line-height:1.9;margin:0}
.esempio .calc+p{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--riga-2)}

/* sommario — the documentation table of contents at the top of an article */
.somm{border:1px solid var(--riga);background:var(--foglio);padding:var(--s3) var(--s4)}
.somm ol{margin:0;padding-left:1.2rem}
.somm li{margin-bottom:.4rem;font-size:.95rem}
.somm li:last-child{margin-bottom:0}

.aside{position:sticky;top:var(--s3)}
.aside>*+*{margin-top:var(--s4)}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.foot{background:var(--verde);color:#E7EFE5;padding-block:var(--s5)}
.foot__cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--s4) var(--s3)}
.foot__title{font-family:var(--mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--verde-chiaro);margin:0 0 var(--s2)}
.foot ul{list-style:none;margin:0;padding:0}
.foot li{margin-bottom:.5rem}
.foot a{font-size:.92rem;color:#E7EFE5;text-decoration:none}
.foot a:hover{color:#FFFCF5;text-decoration:underline}
.foot p{color:#CBD9C8}
.foot__bar{
  margin-top:var(--s5);padding-top:var(--s3);border-top:1px solid rgba(255,252,245,.22);
  display:flex;flex-wrap:wrap;gap:var(--s2) var(--s4);justify-content:space-between;
  font-family:var(--mono);font-size:.72rem;letter-spacing:.04em;
}
.foot__bar p{margin:0;color:var(--verde-chiaro)}
.foot__note{font-size:.92rem;margin-bottom:1rem}
.foot__note--last{margin-bottom:0}
.foot__num{font-family:var(--mono);color:#FFFCF5}

/* the 18+ mark, drawn in type rather than as an image */
.eta{
  display:inline-block;border:1.5px solid var(--rosso-chiaro);padding:.15rem .45rem;
  font-family:var(--mono);font-size:.75rem;letter-spacing:.04em;color:var(--rosso-chiaro);
}

/* ==========================================================================
   RESPONSIVE — every override sits AFTER the base rule it overrides (rule 10)
   ========================================================================== */
@media (max-width:1000px){
  .doc__in,.sec__head,.op,.nota__in,.art__in{grid-template-columns:minmax(0,1fr)}
  .doc__in{gap:var(--s4);padding-block:var(--s5) var(--s4)}
  .sec__head{gap:var(--s2)}
  .op{gap:var(--s2)}
  .aside{position:static}
  .art__in{gap:var(--s5)}
  .foot__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:760px){
  body{font-size:16px}
  .mast__in{grid-template-columns:minmax(0,1fr);align-items:start;gap:var(--s2)}
  .mast__r{align-items:stretch}
  .nav{margin-left:0;gap:0 var(--s3)}
  .mast__legal{margin-left:0;text-align:left}
  .sec{padding-block:var(--s5)}
  /* rule 9: when a grid drops columns, every child past the identity block
     must be told to span the full row rather than auto-placing into col 1 */
  .idx a,.idx__soon{flex-wrap:wrap}
  .idx__lead{display:none}
  .idx__t{flex:1 1 calc(100% - 3.6rem)}
  .idx__p{flex:1 0 calc(100% - 3.6rem);margin-left:3.6rem}
  .qa>summary{padding-right:var(--s4)}
  .qa__body{padding-right:0}
  .foot__cols{grid-template-columns:minmax(0,1fr);gap:var(--s3)}
  .foot__bar{flex-direction:column;gap:var(--s1)}
}

@media (prefers-reduced-motion:reduce){
  *{transition-duration:.01ms !important;animation-duration:.01ms !important}
}

@media print{
  .mast,.foot,.nota{background:#fff;color:#000}
  .nav{display:none}
}