@font-face{font-family:"Barlow Condensed";src:url(fonts/barlow-condensed-600.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:Barlow;src:url(fonts/barlow-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:Barlow;src:url(fonts/barlow-600.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(fonts/jetbrains-mono-400.woff2) format("woff2");font-weight:400;font-display:swap}

/* I quattro colori sono quelli delle coppie di un cavo Ethernet: ogni categoria ha la sua coppia. */
:root{
  --paper:#eef1f3; --surface:#fff; --sunk:#e3e8ec; --ink:#14263b; --muted:#56687a; --line:#c6cfd7;
  --blu:#1d5fbf; --arancio:#d4670a; --verde:#1b7f45; --marrone:#7b4b2a;
  --ok:#1b7f45; --ko:#b3261e; --warn:#a85b00;
  --accent:var(--blu); --on-accent:#fff;
  --display:"Barlow Condensed","Arial Narrow",sans-serif;
  --body:Barlow,"Segoe UI",system-ui,sans-serif;
  --mono:"JetBrains Mono",Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
  --paper:#0f1a27; --surface:#172536; --sunk:#0b141f; --ink:#e7edf3; --muted:#9aaabb; --line:#2c3d51;
  --blu:#6aa5f5; --arancio:#f39a45; --verde:#5cc98a; --marrone:#c99872;
  --ok:#5cc98a; --ko:#ff8a80; --warn:#f3b045; --on-accent:#0f1a27; color-scheme:dark}}
:root[data-theme=dark]{
  --paper:#0f1a27; --surface:#172536; --sunk:#0b141f; --ink:#e7edf3; --muted:#9aaabb; --line:#2c3d51;
  --blu:#6aa5f5; --arancio:#f39a45; --verde:#5cc98a; --marrone:#c99872;
  --ok:#5cc98a; --ko:#ff8a80; --warn:#f3b045; --on-accent:#0f1a27; color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.55 var(--body);min-height:100vh;display:flex;flex-direction:column}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.05;margin:0;letter-spacing:.005em}
p{margin:0 0 .8em}
a{color:var(--accent);text-underline-offset:.18em}
:focus-visible{outline:3px solid var(--arancio);outline-offset:2px;border-radius:4px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.skip{position:absolute;left:-999px;top:8px;background:var(--surface);padding:.5em 1em;z-index:9}
.skip:focus{left:8px}
.noscript{padding:2rem;text-align:center}

/* Testata */
.top{display:flex;align-items:center;gap:1rem;padding:.7rem clamp(1rem,4vw,2.5rem);border-bottom:1px solid var(--line);background:var(--surface);position:sticky;top:0;z-index:5}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink);flex-shrink:0}
.brand-name{font:600 1.45rem/1 var(--display)}
.brand-name span{color:var(--muted)}
.lg-body{fill:var(--ink)} .lg-hole{fill:var(--surface)}
.search{margin-left:auto;position:relative;flex:0 1 20rem;min-width:0}
.search input{width:100%;padding:.5rem 2.2rem .5rem .8rem;font:inherit;font-size:1rem;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:8px}
.search kbd{position:absolute;right:.55rem;top:50%;transform:translateY(-50%);font:400 .75rem var(--mono);color:var(--muted);border:1px solid var(--line);border-radius:4px;padding:0 .35rem;pointer-events:none}
.icon-btn{background:none;border:1px solid var(--line);color:var(--ink);border-radius:8px;width:2.4rem;height:2.4rem;display:grid;place-items:center;cursor:pointer;flex-shrink:0}
.icon-btn:hover{background:var(--paper)}
@media (max-width:560px){.brand-name{display:none}.search kbd{display:none}}

main{flex:1;width:100%;max-width:74rem;margin:0 auto;padding:clamp(1.2rem,4vw,2.5rem) clamp(1rem,4vw,2.5rem) 3rem}
main:focus{outline:none}
.foot{border-top:1px solid var(--line);padding:1.2rem clamp(1rem,4vw,2.5rem);color:var(--muted);font-size:.92rem}
.foot p{margin:0 0 .2em;max-width:74rem;margin-inline:auto}

/* Home */
.hero{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:clamp(1.5rem,4vw,3rem);align-items:end;margin-bottom:clamp(2rem,5vw,3.5rem)}
.hero h1{font-size:clamp(2.7rem,7.5vw,5.4rem);text-wrap:balance}
.hero-lead{font-size:1.15rem;color:var(--muted);max-width:34rem;margin:1rem 0 0}
.linea{background:var(--ink);color:var(--paper);border-radius:10px;padding:1rem 1.2rem;font:400 .92rem/1.5 var(--mono);min-width:0}
.linea dl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:.25rem 1rem;margin:0}
.linea dt{opacity:.65}
.linea dd{margin:0;overflow-wrap:anywhere}
.linea .big{font-size:1.35rem}
.linea-led{display:flex;align-items:center;gap:.5rem;margin-bottom:.6rem;font-family:var(--body);font-size:.9rem;opacity:.8}
.led{width:.6rem;height:.6rem;border-radius:50%;background:#5cc98a;box-shadow:0 0 6px #5cc98a}
.led.off{background:#888;box-shadow:none}
@media (max-width:760px){.hero{grid-template-columns:1fr}}

.cat{margin-bottom:2.4rem;--c:var(--blu)}
.cat[data-cat=web]{--c:var(--arancio)} .cat[data-cat=sic]{--c:var(--marrone)} .cat[data-cat=conv]{--c:var(--verde)}
.cat-head{display:flex;align-items:center;gap:1rem;margin-bottom:.9rem}
.cat-head h2{font-size:1.7rem;white-space:nowrap}
/* la "coppia": un filo pieno e uno rigato bianco/colore */
.coppia{flex:1;height:14px;background:
  linear-gradient(var(--c),var(--c)) 0 0/100% 5px no-repeat,
  repeating-linear-gradient(115deg,var(--c) 0 9px,var(--surface) 9px 18px) 0 100%/100% 5px no-repeat}
.ports{display:grid;grid-template-columns:repeat(auto-fill,minmax(15.5rem,1fr));gap:.6rem;list-style:none;margin:0;padding:0}
.port{display:block;height:100%;padding:.8rem 1rem .9rem;background:var(--surface);border:1px solid var(--line);border-left:5px solid var(--c);border-radius:6px;text-decoration:none;color:var(--ink)}
.port:hover{border-color:var(--c);background:color-mix(in srgb,var(--c) 7%,var(--surface))}
.port strong{display:block;font:600 1.25rem/1.15 var(--display)}
.port span{display:block;color:var(--muted);font-size:.93rem;line-height:1.35;margin-top:.2rem}
.vuoto{color:var(--muted);padding:2rem 0}

/* Pagina strumento */
.tool{--c:var(--blu);max-width:52rem}
.tool[data-cat=web]{--c:var(--arancio)} .tool[data-cat=sic]{--c:var(--marrone)} .tool[data-cat=conv]{--c:var(--verde)}
.tool.wide{max-width:none}
.back{display:inline-block;margin-bottom:1rem;color:var(--muted);text-decoration:none}
.back:hover{color:var(--ink);text-decoration:underline}
.tool-head{border-left:5px solid var(--c);padding-left:1rem;margin-bottom:1.5rem}
.tool-head h1{font-size:clamp(2rem,5vw,3rem)}
.tool-head p{color:var(--muted);margin:.4rem 0 0;max-width:42rem}
.dove{display:inline-block;font-size:.85rem;border:1px solid var(--line);border-radius:99px;padding:.05rem .65rem;margin-top:.6rem;color:var(--muted)}

.form{display:grid;gap:.9rem;margin-bottom:1.2rem}
.row{display:flex;flex-wrap:wrap;gap:.7rem;align-items:end}
.row>.field{flex:1 1 11rem}
.row>.field.s{flex:0 1 8rem}
.field{display:grid;gap:.25rem;min-width:0}
.field-l{font-weight:600;font-size:.95rem}
.field small{color:var(--muted);font-size:.87rem}
.in,select.in,textarea.in{width:100%;font:400 1rem/1.4 var(--body);color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:.55rem .7rem}
textarea.in{font-family:var(--mono);font-size:.92rem;min-height:8rem;resize:vertical}
.in.mono{font-family:var(--mono);font-size:.95rem}
input[type=color].in{padding:.2rem;height:2.6rem}
input[type=range]{width:100%;accent-color:var(--accent)}
.check{display:flex;gap:.5rem;align-items:flex-start;font-size:.97rem}
.check input{margin-top:.3rem;accent-color:var(--accent);width:1rem;height:1rem;flex-shrink:0}
.checks{display:flex;flex-wrap:wrap;gap:.4rem 1.3rem}
.btn{font:600 1rem var(--body);padding:.6rem 1.15rem;border-radius:6px;border:1px solid var(--accent);background:var(--accent);color:var(--on-accent);cursor:pointer;text-decoration:none;display:inline-block}
.btn:hover{filter:brightness(1.1)}
.btn:disabled{opacity:.55;cursor:progress}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line);font-weight:400;padding:.4rem .8rem;font-size:.93rem}
.btn.ghost:hover{background:var(--sunk);filter:none}
.acts{display:flex;flex-wrap:wrap;gap:.5rem;margin:.7rem 0}

.out{min-width:0}
.out>*+*{margin-top:1rem}
.wait{color:var(--muted)}
.err{color:var(--ko);border-left:4px solid var(--ko);padding:.4rem .8rem;background:color-mix(in srgb,var(--ko) 8%,transparent)}
.note{color:var(--muted);font-size:.93rem}
.pre{font:400 .88rem/1.5 var(--mono);background:var(--sunk);border:1px solid var(--line);border-radius:6px;padding:.8rem 1rem;margin:0;overflow:auto;max-height:32rem;white-space:pre-wrap;overflow-wrap:anywhere}
.kv{display:grid;grid-template-columns:minmax(7rem,auto) minmax(0,1fr);margin:0;border:1px solid var(--line);border-radius:6px;background:var(--surface);overflow:hidden}
.kv dt,.kv dd{padding:.45rem .8rem;border-bottom:1px solid var(--line);margin:0}
.kv dt{color:var(--muted);font-size:.93rem}
.kv dd{font-family:var(--mono);font-size:.9rem;overflow-wrap:anywhere}
.kv dt:nth-last-child(2),.kv dd:last-child{border-bottom:0}
.tw{overflow-x:auto;border:1px solid var(--line);border-radius:6px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.9rem}
th,td{text-align:left;padding:.45rem .8rem;border-bottom:1px solid var(--line);vertical-align:top}
th{font-weight:600;color:var(--muted);font-size:.87rem;white-space:nowrap}
td{font-family:var(--mono);overflow-wrap:anywhere}
tr:last-child td{border-bottom:0}
.tag{display:inline-block;font:600 .82rem var(--body);padding:.05rem .55rem;border-radius:99px;border:1px solid currentColor}
.tag.ok{color:var(--ok)} .tag.ko{color:var(--ko)} .tag.warn{color:var(--warn)}
.sub{font:600 1.35rem var(--display);margin-top:1.6rem}
.gauges{display:grid;grid-template-columns:repeat(auto-fit,minmax(9rem,1fr));gap:.6rem}
.gauge{background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:.8rem 1rem}
.gauge b{display:block;font:600 2.3rem/1 var(--display)}
.gauge span{color:var(--muted);font-size:.9rem}
.bar{height:8px;background:var(--sunk);border-radius:4px;overflow:hidden}
.bar i{display:block;height:100%;background:var(--c,var(--accent));width:0;transition:width .2s}
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,18rem),1fr));gap:1.2rem;align-items:start}
.qr-box{background:#fff;border:1px solid var(--line);border-radius:6px;padding:1rem;display:grid;place-items:center}
.qr-box canvas{max-width:100%;height:auto;image-rendering:pixelated}
.pw{font:400 1.25rem/1.4 var(--mono);background:var(--sunk);border:1px solid var(--line);border-radius:6px;padding:.8rem 1rem;overflow-wrap:anywhere}
.swatch{height:5rem;border-radius:6px;border:1px solid var(--line)}
.prose{max-width:42rem}
.prose h2{font-size:1.6rem;margin:1.6rem 0 .5rem}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* Selettore lingua */
.lang,.tool-lang{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;flex-shrink:0;background:var(--surface)}
.lang button,.lang-btn{font:600 .85rem/1 var(--body);padding:0 .7rem;height:2.4rem;border:0;background:none;color:var(--muted);cursor:pointer}
.lang button:hover,.lang-btn:hover{color:var(--ink)}
.lang button[aria-pressed=true],.lang-btn[aria-pressed=true]{background:var(--ink);color:var(--paper)}
.lang button+button,.lang-btn+.lang-btn{border-left:1px solid var(--line)}
.tool-top{display:flex;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}
.tool-top .back{margin:0}
.tool-lang-wrap{display:flex;align-items:center;gap:.6rem;color:var(--muted);font-size:.88rem}
.tool-lang{border-radius:6px}
.tool-lang .lang-btn{height:2rem;padding:0 .6rem;font-size:.8rem}
@media (max-width:640px){.tl-l{display:none}}

/* Titolo del logo, scritto a macchina */
.logo-type{font:600 clamp(3.6rem,12vw,7.6rem)/1 var(--display);letter-spacing:-.012em;min-height:1.05em;margin:0;display:block}
.lt-prompt{color:var(--arancio);margin-left:.16em}
.lt-u.blink{animation:blink .9s steps(1) 4}
.caret{display:inline-block;width:.075em;height:.78em;margin-left:.05em;background:var(--arancio);vertical-align:-.04em}
.caret.on{animation:blink 1s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
@media (prefers-reduced-motion:reduce){.caret.on,.lt-u.blink{animation:none}}