@font-face{font-family:'Bebas Neue';font-style:normal;font-weight:400;font-display:swap;src:url('../assets/fonts/bebas-neue-latin-400-normal.woff2') format('woff2');}
@font-face{font-family:'Nunito';font-style:normal;font-weight:300;font-display:swap;src:url('../assets/fonts/nunito-latin-300-normal.woff2') format('woff2');}
@font-face{font-family:'Nunito';font-style:normal;font-weight:400;font-display:swap;src:url('../assets/fonts/nunito-latin-400-normal.woff2') format('woff2');}
@font-face{font-family:'Nunito';font-style:normal;font-weight:600;font-display:swap;src:url('../assets/fonts/nunito-latin-600-normal.woff2') format('woff2');}
@font-face{font-family:'Nunito';font-style:normal;font-weight:700;font-display:swap;src:url('../assets/fonts/nunito-latin-700-normal.woff2') format('woff2');}
@font-face{font-family:'Nunito';font-style:normal;font-weight:800;font-display:swap;src:url('../assets/fonts/nunito-latin-800-normal.woff2') format('woff2');}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url('../assets/fonts/jetbrains-mono-latin-400-normal.woff2') format('woff2');}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:600;font-display:swap;src:url('../assets/fonts/jetbrains-mono-latin-600-normal.woff2') format('woff2');}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:700;font-display:swap;src:url('../assets/fonts/jetbrains-mono-latin-700-normal.woff2') format('woff2');}

:root{
  --navy:#2B386D;
  --navy-dark:#1E2A55;
  --navy-deep:#141d3a;
  --green:#19D878;
  --green-muted:#15C06A;
  --white:#FFFFFF;
  --dim:rgba(255,255,255,.66);
  --dim2:rgba(255,255,255,.40);
  --line:rgba(255,255,255,.12);
  --font-display:'Bebas Neue','Arial Black',sans-serif;
  --font-body:'Nunito','Helvetica Neue',sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  font-family:var(--font-body);
  background:radial-gradient(120% 80% at 50% -10%,#33417e 0%,var(--navy) 38%,var(--navy-dark) 100%);
  background-attachment:fixed;
  color:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased;
}
.wrap{max-width:1000px;margin:0 auto;padding:0 28px}

/* TOP BAR */
.topbar{position:sticky;top:0;z-index:50;background:rgba(20,29,58,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;height:54px}
.brand{font-size:.72rem;letter-spacing:.18em;text-transform:uppercase;color:var(--dim);font-weight:700}
.brand b{color:var(--green)}
.topnav{display:flex;gap:16px;font-size:.7rem;letter-spacing:.06em;text-transform:uppercase}
.topnav a{color:var(--dim);text-decoration:none;transition:color .2s}
.topnav a:hover{color:var(--green)}
@media(max-width:820px){.topnav{display:none}}

/* HERO */
.hero{position:relative;padding:84px 0 60px;overflow:hidden}
.hero .wrap{position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:.74rem;letter-spacing:.22em;text-transform:uppercase;color:var(--green);font-weight:800;margin-bottom:22px}
.eyebrow::before{content:"";width:34px;height:2px;background:var(--green)}
.hero h1{font-family:var(--font-display);font-size:clamp(3.2rem,9vw,7rem);line-height:.86;letter-spacing:.01em;text-transform:uppercase;margin-bottom:8px}
.hero h1 .g{color:var(--green)}
.hero .sub{font-family:var(--font-display);font-size:clamp(1.5rem,3.6vw,2.6rem);letter-spacing:.03em;color:var(--white);opacity:.92;line-height:1}
.hero p.lede{margin-top:26px;max-width:620px;font-size:1.06rem;color:var(--dim);font-weight:300}
.hero .tags{margin-top:28px;display:flex;flex-wrap:wrap;gap:10px}
.tag{font-size:.72rem;letter-spacing:.05em;text-transform:uppercase;font-weight:700;padding:7px 13px;border:1px solid var(--line);border-radius:999px;color:var(--dim)}
.tag.gr{color:var(--navy-dark);background:var(--green);border-color:var(--green)}
.hero-circle{position:absolute;right:-160px;top:-60px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle at 30% 30%,rgba(25,216,120,.22),transparent 62%);z-index:1;pointer-events:none}

/* SECTION */
.section{padding:34px 0;border-top:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-start;gap:18px;margin-bottom:26px}
.sec-num{font-family:var(--font-display);font-size:2.7rem;line-height:.8;color:var(--green);flex-shrink:0;width:64px}
.sec-titles .label{font-size:.7rem;letter-spacing:.18em;text-transform:uppercase;color:var(--dim2);font-weight:700;margin-bottom:4px}
.sec-titles h2{font-family:var(--font-display);font-size:clamp(1.9rem,4.4vw,2.9rem);line-height:.95;letter-spacing:.01em;text-transform:uppercase}
.sec-titles h2 .g{color:var(--green)}
.sec-icon{margin-left:auto;flex-shrink:0}
@media(max-width:620px){.sec-icon{display:none}}

h3{font-family:var(--font-display);font-size:1.5rem;letter-spacing:.02em;text-transform:uppercase;margin:30px 0 10px;color:var(--white)}
h3 .g{color:var(--green)}
/* prose */
p{margin:0 0 14px;color:var(--white);font-weight:300;font-size:1.02rem}
p .hl{color:var(--green);font-weight:700}
strong{font-weight:700;color:var(--white)}
.muted{color:var(--dim)}
em{font-style:italic;color:var(--dim)}
ul.bul{list-style:none;margin:0 0 16px;padding:0}
ul.bul li{position:relative;padding:5px 0 5px 24px;color:var(--white);font-weight:300;font-size:1.02rem}
ul.bul li::before{content:"";position:absolute;left:2px;top:14px;width:8px;height:8px;background:var(--green);border-radius:2px}
ul.bul li b{font-weight:700}
.kbd{font-family:var(--font-mono);font-size:.86em;background:rgba(255,255,255,.07);border:1px solid var(--line);border-radius:5px;padding:1px 6px;color:#cfe6ff}

/* callout */
.note{border-left:3px solid var(--green);background:rgba(25,216,120,.07);padding:14px 18px;border-radius:0 8px 8px 0;margin:18px 0;font-size:.98rem;color:var(--dim)}
.note b{color:var(--green)}
.warn{border-left-color:#ffcf4d;background:rgba(255,207,77,.08)}
.warn b{color:#ffcf4d}

/* law citation */
.lawquote{margin:16px 0;background:var(--navy-dark);border:1px solid var(--line);border-left:3px solid var(--green);border-radius:0 10px 10px 0;padding:14px 18px}
.lawquote .ref{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--green);font-weight:700;margin-bottom:7px;display:block}
.lawquote p{font-size:.96rem;color:#dfe6ff;font-style:italic;margin:0}

/* PDF viewer */
.pdfwrap{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}
@media(max-width:760px){.pdfwrap{grid-template-columns:1fr}}
.pdfbox{background:var(--navy-deep);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.pdfbar{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.03)}
.pdfbar .t{font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);font-weight:800;line-height:1.3}
.pdfbar a{font-family:var(--font-mono);font-size:.68rem;color:var(--green);text-decoration:none;border:1px solid rgba(25,216,120,.4);border-radius:6px;padding:4px 9px;white-space:nowrap}
.pdfbar a:hover{background:rgba(25,216,120,.12)}
.pdfbox iframe{width:100%;height:430px;border:0;display:block;background:#fff}
.pdfbox.trace{margin:12px 0 6px}
.pdfbox.trace iframe{height:400px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:16px;margin:18px 0}
.card{background:var(--navy-dark);border:1px solid var(--line);border-radius:12px;padding:20px;position:relative;overflow:hidden}
.card h4{font-family:var(--font-display);font-size:1.4rem;letter-spacing:.02em;margin-bottom:4px}
.card .where{font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;font-weight:800;margin-bottom:10px;color:var(--green)}
.card p{font-size:.92rem;margin-bottom:12px;color:var(--dim)}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{font-family:var(--font-mono);font-size:.72rem;font-weight:600;padding:4px 9px;border-radius:6px;background:rgba(25,216,120,.14);color:var(--green);border:1px solid rgba(25,216,120,.3)}

/* timeline */
.timeline{position:relative;margin:22px 0 8px;padding-left:30px}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:linear-gradient(var(--green),rgba(25,216,120,.15))}
.tl{position:relative;padding:0 0 20px 18px}
.tl::before{content:"";position:absolute;left:-25px;top:5px;width:14px;height:14px;border-radius:50%;background:var(--navy-dark);border:3px solid var(--green)}
.tl .time{font-family:var(--font-mono);font-size:.78rem;font-weight:600;color:var(--green);letter-spacing:.02em}
.tl .what{font-weight:700;margin:2px 0 2px;font-size:1.04rem}
.tl .desc{font-size:.92rem;color:var(--dim);font-weight:300}

/* CLI / code block */
.cli{background:var(--navy-deep);border:1px solid var(--line);border-radius:10px;font-family:var(--font-mono);font-size:.84rem;line-height:1.7;overflow-x:auto;margin:16px 0}
.cli .bar{display:flex;align-items:center;gap:7px;padding:9px 14px;border-bottom:1px solid var(--line);background:rgba(255,255,255,.03)}
.cli .bar i{width:10px;height:10px;border-radius:50%;display:inline-block}
.cli .bar .r{background:#ff5f56}.cli .bar .y{background:#ffbd2e}.cli .bar .g{background:#27c93f}
.cli .bar span{margin-left:8px;font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim2)}
.cli pre{padding:14px 16px;white-space:pre;color:#dfe6ff}
.cli .cm{color:#7f8db5;font-style:italic}.cli .kw{color:#ffcf4d}.cli .st{color:#8ce0a5}.cli .vr{color:#ff9d7a}.cli .fn{color:#7cc7ff}

/* compare */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0}
@media(max-width:640px){.compare{grid-template-columns:1fr}}
.col{background:var(--navy-dark);border:1px solid var(--line);border-radius:12px;padding:18px}
.col h4{font-family:var(--font-display);font-size:1.5rem;color:var(--green);letter-spacing:.02em;margin-bottom:4px}
.col .tagline{font-size:.78rem;color:var(--dim2);text-transform:uppercase;letter-spacing:.08em;font-weight:700;margin-bottom:12px}

/* table */
.tbl{width:100%;border-collapse:collapse;margin:16px 0;font-size:.9rem}
.tbl th,.tbl td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{font-size:.66rem;letter-spacing:.1em;text-transform:uppercase;color:var(--green);font-weight:800}
.tbl td{color:var(--dim);font-weight:300}
.tbl td b{color:var(--white);font-weight:700}
.tbl tr:last-child td{border-bottom:none}
.tbl .mono,.mono{font-family:var(--font-mono)}
.tbl .pts{color:var(--green);font-weight:700;font-family:var(--font-mono);white-space:nowrap}

/* relational data table (light, looks like a real DB table) */
.dbtbl{border-collapse:collapse;font-family:var(--font-mono);font-size:.8rem;margin:8px 0;min-width:230px;border:1px solid var(--green);border-radius:8px;overflow:hidden}
.dbtbl caption{font-family:var(--font-mono);font-size:.72rem;color:var(--green);text-align:left;padding:0 0 6px 2px;letter-spacing:.04em}
.dbtbl th{background:var(--green);color:var(--navy-deep);font-weight:700;padding:6px 11px;text-align:left}
.dbtbl td{padding:5px 11px;border-top:1px solid var(--line);color:#dfe6ff}
.dbtbl tr:nth-child(even) td{background:rgba(255,255,255,.03)}
.pkx{color:#ffcf4d}.fkx{color:#7cc7ff}
.dbrow{display:flex;flex-wrap:wrap;gap:18px;align-items:flex-start;margin:12px 0}

/* diagram box */
.diagram{background:var(--navy-dark);border:1px solid var(--line);border-radius:12px;padding:20px;margin:18px 0;text-align:center}
.diagram svg{max-width:100%;height:auto}
.diagram .cap{font-size:.82rem;color:var(--dim);margin-top:12px;font-weight:300}

/* steps */
.steps{counter-reset:s;margin:18px 0}
.step{position:relative;padding:0 0 16px 52px;min-height:42px}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:0;width:36px;height:36px;border-radius:10px;background:var(--green);color:var(--navy-dark);font-family:var(--font-display);font-size:1.3rem;display:flex;align-items:center;justify-content:center}
.step h5{font-weight:800;font-size:1rem;margin-bottom:2px}
.step p{font-size:.92rem;color:var(--dim);margin:0}
.step .mono{color:var(--green)}

/* Q&A */
details.q{background:var(--navy-dark);border:1px solid var(--line);border-radius:10px;margin:10px 0;overflow:hidden}
details.q>summary{cursor:pointer;list-style:none;padding:13px 16px;font-weight:700;display:flex;gap:10px;align-items:flex-start;font-size:.98rem}
details.q>summary::-webkit-details-marker{display:none}
details.q>summary .qmk{font-family:var(--font-mono);color:var(--green);flex:none}
details.q[open]>summary{border-bottom:1px solid var(--line);background:rgba(255,255,255,.03)}
details.q .ans{padding:12px 16px;color:var(--dim);font-size:.94rem;font-weight:300}
details.q .ans :last-child{margin-bottom:0}
.codeblock{background:var(--navy-deep);border:1px solid var(--line);border-radius:8px;padding:10px 12px;margin:9px 0;font-family:var(--font-mono);font-size:.78rem;color:#dfe6ff;white-space:pre-wrap;overflow-x:auto;line-height:1.55}
.codeblock .kw{color:#ffcf4d}.codeblock .cm{color:#7f8db5;font-style:italic}.codeblock .st{color:#8ce0a5}
.examhdr{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin:30px 0 6px}
.examhdr .ses{font-family:var(--font-mono);font-size:.66rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--navy-dark);background:var(--green);border-radius:6px;padding:4px 9px}
.examhdr h3{margin:0;font-size:1.4rem}
.examhdr .ctx{font-size:.86rem;color:var(--dim);font-weight:300}
.advice .tag-q{font-family:var(--font-mono);font-size:.72rem;color:var(--green);font-weight:700;margin-right:7px}

/* footer */
.foot{border-top:1px solid var(--line);padding:34px 0 60px;text-align:center}
.foot .big{font-family:var(--font-display);font-size:clamp(1.6rem,5vw,2.6rem);letter-spacing:.02em;line-height:1;margin-bottom:10px}
.foot .big .g{color:var(--green)}
.foot p{color:var(--dim2);font-size:.82rem}

a:focus-visible,summary:focus-visible{outline:2px solid var(--green);outline-offset:3px;border-radius:4px}

@media print{body{background:#fff;color:#111}.topbar,.hero-circle{display:none}.section{border-color:#ccc}}

/* ===== Aggiunte per il corso ===== */
.lessons{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;margin:24px 0}
.lcard{display:block;text-decoration:none;background:var(--navy-dark);border:1px solid var(--line);border-radius:14px;padding:22px;transition:transform .18s,border-color .18s;position:relative;overflow:hidden}
.lcard:hover{transform:translateY(-3px);border-color:rgba(25,216,120,.5)}
.lcard .ln{font-family:var(--font-display);font-size:2.4rem;color:var(--green);line-height:.8}
.lcard h3{font-family:var(--font-display);font-size:1.5rem;color:var(--white);margin:10px 0 6px;text-transform:uppercase;letter-spacing:.02em}
.lcard p{font-size:.9rem;color:var(--dim);margin:0;font-weight:300}
.lcard .arrow{position:absolute;right:18px;top:20px;color:var(--green);font-size:1.4rem;opacity:.5}
.backlink{display:inline-flex;align-items:center;gap:8px;font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dim);text-decoration:none;font-weight:700;margin-bottom:6px}
.backlink:hover{color:var(--green)}
.lessnav{display:flex;justify-content:space-between;gap:14px;margin:40px 0 0;padding-top:24px;border-top:1px solid var(--line)}
.lessnav a{flex:1;text-decoration:none;background:var(--navy-dark);border:1px solid var(--line);border-radius:12px;padding:14px 18px;color:var(--white);transition:border-color .18s}
.lessnav a:hover{border-color:rgba(25,216,120,.5)}
.lessnav .dir{font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--green);font-weight:800;display:block;margin-bottom:3px}
.lessnav .nm{font-weight:700;font-size:.95rem}
.lessnav .next{text-align:right}
.lessnav .disabled{opacity:.3;pointer-events:none}
/* solution details (verde) */
details.sol{background:var(--navy-dark);border:1px solid rgba(25,216,120,.3);border-left:3px solid var(--green);border-radius:10px;margin:10px 0;overflow:hidden}
details.sol>summary{cursor:pointer;list-style:none;padding:12px 16px;font-weight:800;font-size:.86rem;letter-spacing:.04em;text-transform:uppercase;color:var(--green);display:flex;gap:10px;align-items:center}
details.sol>summary::-webkit-details-marker{display:none}
details.sol>summary::before{content:"►";font-size:.7rem;transition:transform .2s}
details.sol[open]>summary::before{transform:rotate(90deg)}
details.sol[open]>summary{border-bottom:1px solid var(--line)}
details.sol .solbody{padding:6px 16px 14px}
.svgkey{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:10px;font-size:.78rem;color:var(--dim)}
.svgkey span{display:inline-flex;align-items:center;gap:6px}
.svgkey i{width:12px;height:12px;border-radius:3px;display:inline-block}

/* ===== Aggiunte recupero debito Java ===== */
.exhdr{display:flex;align-items:center;gap:12px;margin:26px 0 8px}
.exhdr .exn{font-family:var(--font-display);font-size:1.8rem;color:var(--green);line-height:.8;flex:none}
.exhdr .ext{font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--dim2);font-weight:800}
.outbox{background:#0c1430;border:1px solid var(--line);border-left:3px solid #ffcf4d;border-radius:8px;font-family:var(--font-mono);font-size:.8rem;color:#cfe6ff;padding:10px 14px;margin:10px 0;white-space:pre-wrap;line-height:1.55}
.outbox .lbl{display:block;font-size:.6rem;letter-spacing:.12em;text-transform:uppercase;color:#ffcf4d;font-weight:800;margin-bottom:6px}
.tags2{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 4px}
.crumbs{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 0}
.crumbs a{font-family:var(--font-mono);font-size:.74rem;color:var(--green);text-decoration:none;border:1px solid rgba(25,216,120,.4);border-radius:7px;padding:5px 11px}
.crumbs a:hover{background:rgba(25,216,120,.12)}
.uml{fill:#1E2A55;stroke:#8a96c8}
.umlh{fill:var(--green)}