:root{
  --ink:#1b2430;--mute:#5f6b7a;--line:#d8dee6;--bg:#f5f7f9;--card:#ffffff;
  --blu:#1f4e79;--blu2:#2f6ea8;--giallo:#fff2cc;--giallo2:#f2c94c;--grigio:#eceff2;
  --ok:#2e7d32;--late:#c62828;--warn:#ef6c00;--wait:#8a939e;
  --steel:#3d4b5c;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg);font-size:17px;line-height:1.5}
a{color:var(--blu2)}
.muted{color:var(--mute)}
.tiny{font-size:12px;color:var(--mute);margin-top:28px}
/* login */
body.login{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(160deg,#1f4e79 0%,#3d4b5c 60%,#1b2430 100%)}
.login-box{background:#fff;padding:36px 40px;border-radius:14px;width:min(420px,92vw);box-shadow:0 20px 60px rgba(0,0,0,.35)}
.login-box h1{margin:14px 0 4px;font-size:26px}
.login-box label{display:block;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--mute);margin:18px 0 6px}
.login-box input{width:100%;font-size:18px;padding:12px;border:1px solid var(--line);border-radius:8px}
.login-box button{margin-top:16px;width:100%;font-size:17px;padding:12px;border:0;border-radius:8px;background:var(--blu);color:#fff;font-weight:600;cursor:pointer}
.err{color:var(--late);font-weight:600}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.04em;color:var(--blu)}
.brand-mark{width:26px;height:26px;border-radius:6px;background:linear-gradient(135deg,var(--blu),var(--giallo2))}
/* layout */
header.top{position:sticky;top:var(--lnav-h,0px);z-index:5;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:18px;padding:10px 22px}
header.top nav{display:flex;gap:14px;flex-wrap:wrap;font-size:14px}
header.top nav a{color:var(--ink);text-decoration:none;padding:6px 8px;border-radius:6px}
header.top nav a:hover{background:var(--grigio)}
header.top form{margin-left:auto}
header.top button{background:none;border:1px solid var(--line);border-radius:6px;padding:6px 10px;cursor:pointer;color:var(--mute)}
main{max-width:1100px;margin:0 auto;padding:24px 22px 80px}
section{margin:56px 0}
h1{font-size:34px;line-height:1.15;margin:0 0 8px;text-wrap:balance}
h2{font-size:26px;margin:0 0 14px;color:var(--blu);text-wrap:balance}
h3{font-size:19px;margin:22px 0 8px}
p{max-width:70ch}
.lead{font-size:20px;color:var(--steel);max-width:62ch}
.hero{padding:40px 0 10px}
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--mute);margin-bottom:8px}
/* flow animation */
.flow{position:relative;margin:30px 0 10px;padding:26px 18px 18px;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.flow .steps{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;position:relative}
.flow .step{background:var(--grigio);border-radius:10px;padding:12px 10px;text-align:center;font-size:14px;min-height:78px;display:flex;flex-direction:column;justify-content:center;transition:background .3s,color .3s,transform .3s}
.flow .step b{display:block;font-size:12px;letter-spacing:.06em;color:var(--mute)}
.flow .step.on{background:var(--blu);color:#fff;transform:translateY(-3px)}
.flow .step.on b{color:#cfe0f5}
.flow .step.done{background:#e2f0d9;color:var(--ok)}
.flow .rail{height:6px;background:var(--line);border-radius:3px;margin:18px 6px 6px;position:relative}
.flow .rail i{position:absolute;left:0;top:-9px;width:24px;height:24px;border-radius:50%;background:var(--giallo2);border:3px solid #fff;box-shadow:0 2px 8px rgba(0,0,0,.25);transition:left .9s cubic-bezier(.4,0,.2,1)}
.flow .caption{margin-top:12px;font-size:15px;color:var(--steel);min-height:24px}
@media (max-width:760px){.flow .steps{grid-template-columns:repeat(3,1fr)}}
/* legend */
.legend{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin-top:14px}
.legend div{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;display:flex;gap:12px;align-items:center}
.sw{width:42px;height:28px;border-radius:5px;border:1px solid rgba(0,0,0,.08);flex:none}
.sw.h{background:var(--blu)}.sw.e{background:var(--giallo)}.sw.c{background:var(--grigio)}.sw.k{background:#fff;font-weight:700;display:flex;align-items:center;justify-content:center;font-size:12px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:15px}
/* roles */
.role{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px;margin:18px 0}
.role.alt{grid-template-columns:.9fr 1.1fr}
.role.alt .txt{order:2}
.role ol{padding-left:20px;margin:8px 0}
.role li{margin:6px 0}
.role .who{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--mute)}
.shot{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--grigio);box-shadow:0 8px 24px rgba(0,0,0,.08)}
.shot img{display:block;width:100%;height:auto;cursor:zoom-in}
.shot img:not([src]),.shot img[src=""]{display:none}
.shot.empty{display:none}
.shot .cap::after{content:" — clicca la foto per ingrandirla";color:var(--mute)}
/* figure a piena larghezza nelle sezioni ruolo, così le schermate si leggono */
section .shot{margin:6px 0 18px}
#lightbox{position:fixed;inset:0;background:rgba(10,15,22,.9);display:none;align-items:center;justify-content:center;z-index:50;padding:20px;cursor:zoom-out}
#lightbox.on{display:flex}
#lightbox img{max-width:98vw;max-height:96vh;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.6)}
.shot .cap{font-size:13px;color:var(--mute);padding:8px 10px;background:#fff}
@media (max-width:820px){.role,.role.alt{grid-template-columns:1fr}.role.alt .txt{order:0}}
/* rules table */
table{border-collapse:collapse;width:100%;background:#fff;font-size:15px}
th{background:var(--blu);color:#fff;text-align:left;padding:8px 10px;font-weight:600}
td{padding:7px 10px;border-bottom:1px solid var(--line)}
td.c{text-align:center}
.wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px}
.yes{color:var(--ok);font-weight:700}.no{color:var(--mute)}
/* callouts */
.callout{border-left:5px solid var(--giallo2);background:#fffbe6;padding:12px 16px;border-radius:0 10px 10px 0;margin:14px 0}
.callout.red{border-color:var(--late);background:#fdecea}
.callout.blue{border-color:var(--blu2);background:#eaf2fb}
/* links grid */
.links{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.links a{display:block;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 16px;text-decoration:none;color:var(--ink)}
.links a b{display:block;color:var(--blu)}
.links a small{color:var(--mute)}
.links a:hover{border-color:var(--blu2)}
/* reveal on scroll (visible by default) */
.rv{transition:opacity .6s,transform .6s}
.rv.pre{opacity:.001;transform:translateY(14px)}
@media (prefers-reduced-motion:reduce){.rv.pre{opacity:1;transform:none}.flow .rail i{transition:none}}
/* todo list */
.todo{list-style:none;padding:0}
.todo li{padding:8px 0 8px 32px;position:relative;border-bottom:1px dashed var(--line)}
.todo li::before{content:"";position:absolute;left:4px;top:13px;width:16px;height:16px;border-radius:4px;border:2px solid var(--blu2)}
.todo li.ok::before{background:var(--ok);border-color:var(--ok)}
.todo li.ok::after{content:"✓";position:absolute;left:7px;top:6px;color:#fff;font-size:13px;font-weight:700}
footer{max-width:1100px;margin:0 auto;padding:20px 22px;color:var(--mute);font-size:13px;border-top:1px solid var(--line)}
/* ================= schermi grandi: scala fino a 4K / 32" ================= */
@media (min-width:1500px){
  body{font-size:18px}
  main,footer{max-width:1240px}
  h1{font-size:38px}h2{font-size:28px}
}
@media (min-width:2000px){
  body{font-size:20px}
  main,footer{max-width:1460px}
  h1{font-size:46px}h2{font-size:33px}.lead{font-size:23px;max-width:64ch}
  header.top{padding:14px 30px}
  header.top nav{font-size:16px}
}
@media (min-width:2800px){
  body{font-size:25px;line-height:1.55}
  main,footer{max-width:1820px}
  h1{font-size:58px}h2{font-size:42px}h3{font-size:27px}.lead{font-size:30px;max-width:66ch}
  header.top{padding:18px 40px}
  header.top nav{font-size:19px;gap:20px}
  .chip,td,th,table{font-size:18px}
  .flow .step{font-size:18px;min-height:96px}
}
/* ================= mobile: header su una riga scorrevole ================= */
@media (max-width:760px){
  body{font-size:16px}
  header.top{gap:10px;padding:8px 12px;flex-wrap:nowrap}
  header.top nav{flex-wrap:nowrap;overflow-x:auto;white-space:nowrap;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  header.top nav::-webkit-scrollbar{display:none}
  header.top nav a{flex:0 0 auto}
  header.top form{flex:0 0 auto}
  main{padding:16px 15px 60px}
  .hero{padding:24px 0 6px}
  h1{font-size:26px}h2{font-size:21px}.lead{font-size:17px}
  section{margin:40px 0}
}