/* pginformatica-mi.it — stile condiviso. Nessuna risorsa esterna: font, immagini e script sono tutti locali. */
@font-face{font-family:"Inter";font-style:normal;font-weight:100 900;font-display:swap;src:url("../fonts/inter.woff2") format("woff2")}
@font-face{font-family:"Source Serif 4";font-style:normal;font-weight:200 900;font-display:swap;src:url("../fonts/source-serif-4.woff2") format("woff2")}

:root{
  --navy-950:#050f20;--navy-900:#0a2342;--blue-800:#103a6e;--blue-700:#14498a;
  --azure-500:#2a9df4;--azure-300:#7cc4fa;--gold-500:#c9a24b;--gold-300:#e6cd8b;
  --serif:"Source Serif 4",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --vetro:rgba(255,255,255,.07);--bordo:rgba(255,255,255,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:#f0f7ff;background:var(--navy-950);-webkit-font-smoothing:antialiased;position:relative;overflow-x:hidden;display:flex;flex-direction:column;min-height:100vh;line-height:1.5}
img{max-width:100%}
.container{width:100%;padding:0 .75rem;margin:0 auto}
@media (min-width:576px){.container{max-width:540px}}
@media (min-width:768px){.container{max-width:720px}}
@media (min-width:992px){.container{max-width:960px}}
@media (min-width:1200px){.container{max-width:1140px}}
.text-center{text-align:center}
[hidden]{display:none!important}

/* ===== Sfondo animato ===== */
.sfondo{position:fixed;inset:0;z-index:-1;overflow:hidden;
  background:radial-gradient(900px 520px at 85% -8%,rgba(42,157,244,.5),transparent 60%),
  radial-gradient(700px 460px at 5% 105%,rgba(42,157,244,.24),transparent 60%),
  linear-gradient(135deg,var(--navy-950) 0%,var(--blue-800) 62%,#1f78c8 100%)}
.sfondo::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:44px 44px;-webkit-mask-image:linear-gradient(to bottom,#000 20%,transparent 92%);mask-image:linear-gradient(to bottom,#000 20%,transparent 92%)}
.sfondo::after{content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 50% 38%,rgba(255,255,255,.05),transparent 45%),radial-gradient(ellipse at 50% 120%,rgba(0,0,0,.45),transparent 60%)}
.alone{position:absolute;border-radius:50%;filter:blur(70px);opacity:.55;will-change:transform}
.alone-1{width:34rem;height:34rem;left:-10rem;top:8%;background:rgba(42,157,244,.30);animation:fluttua 18s ease-in-out infinite alternate}
.alone-2{width:28rem;height:28rem;right:-8rem;top:42%;background:rgba(201,162,75,.16);animation:fluttua 22s ease-in-out -6s infinite alternate-reverse}
@keyframes fluttua{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(4rem,-3rem,0) scale(1.12)}}

/* ===== Header / brand ===== */
.sito-header{padding-top:1.6rem}
@media (min-width:768px){.sito-header{padding-top:2.4rem}}
.brand{display:inline-flex;align-items:center;gap:.9rem;padding:.55rem 1.3rem .55rem .85rem;border:1px solid var(--bordo);border-radius:999px;background:var(--vetro);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 8px 28px rgba(0,0,0,.25);text-decoration:none}
.brand-logo{display:block;width:auto;height:3.2rem;filter:drop-shadow(0 4px 12px rgba(42,157,244,.5))}
.brand-text{font-family:var(--serif);font-weight:700;color:#fff;text-align:left;line-height:1;letter-spacing:.01em;font-size:1.7rem}
.brand-text small{display:block;margin-top:.4rem;font-family:var(--sans);font-size:.66rem;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--azure-300)}
@media (max-width:400px){.brand-text{font-size:1.3rem}.brand-logo{height:2.6rem}}

/* ===== Corpo ===== */
main{flex:1 0 auto;display:flex;flex-direction:column;justify-content:center;padding:3.5rem .75rem 3rem}
.centro{max-width:52rem;width:100%;margin:0 auto}
.etichetta{display:inline-flex;align-items:center;gap:.6rem;margin:0 0 1.2rem;padding:.4rem 1rem;border:1px solid rgba(201,162,75,.45);border-radius:999px;background:rgba(201,162,75,.10);color:var(--gold-300);font-weight:650;letter-spacing:.16em;text-transform:uppercase;font-size:.76rem}
.etichetta::before{content:"";width:.5rem;height:.5rem;border-radius:50%;background:var(--gold-500);box-shadow:0 0 0 0 rgba(201,162,75,.6);animation:impulso 2.2s infinite}
@keyframes impulso{70%{box-shadow:0 0 0 .6rem rgba(201,162,75,0)}100%{box-shadow:0 0 0 0 rgba(201,162,75,0)}}
.titolo{font-family:var(--serif);font-weight:700;letter-spacing:-.015em;line-height:1.1;font-size:clamp(2.1rem,6vw,3.8rem);margin:0 0 1.2rem;color:#fff;text-wrap:balance;
  background:linear-gradient(180deg,#fff 30%,#bfe0fb 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.titolo strong{-webkit-text-fill-color:transparent;background:linear-gradient(90deg,var(--gold-300),var(--gold-500));-webkit-background-clip:text;background-clip:text}
.titolo::after{content:"";display:block;width:5rem;height:3px;margin:1.3rem auto 0;background:linear-gradient(90deg,transparent,var(--gold-500),transparent);border-radius:2px}
.messaggio{color:#dbeafe;font-size:clamp(1.02rem,2.2vw,1.25rem);line-height:1.75;max-width:40rem;margin:0 auto 2.2rem}
.sopra-countdown{color:var(--azure-300);font-weight:600;letter-spacing:.18em;text-transform:uppercase;font-size:.8rem;margin:0 0 1rem}

/* ===== Countdown ===== */
.countdown{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:clamp(.5rem,2vw,1.2rem);max-width:40rem;margin:0 auto}
.blocco{position:relative;overflow:hidden;background:linear-gradient(160deg,rgba(255,255,255,.14),rgba(255,255,255,.04));border:1px solid var(--bordo);border-radius:16px;padding:clamp(.9rem,3vw,1.6rem) .25rem;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 14px 34px rgba(0,0,0,.28),inset 0 1px 0 rgba(255,255,255,.25);transition:transform .25s ease,border-color .25s ease}
.blocco:hover{transform:translateY(-4px);border-color:rgba(124,196,250,.6)}
.blocco::before{content:"";position:absolute;left:12%;right:12%;top:0;height:2px;background:linear-gradient(90deg,transparent,var(--azure-300),transparent)}
.blocco:last-child::before{background:linear-gradient(90deg,transparent,var(--gold-500),transparent)}
.numero{display:block;font-family:var(--serif);font-weight:700;color:#fff;font-variant-numeric:tabular-nums;line-height:1;font-size:clamp(1.9rem,8vw,3.6rem);text-shadow:0 0 24px rgba(42,157,244,.55)}
.unita{display:block;margin-top:.6rem;color:var(--azure-300);font-size:clamp(.62rem,2vw,.8rem);letter-spacing:.14em;text-transform:uppercase;font-weight:600}

/* ===== Contatto / riquadro rubrica ===== */
.contatto{margin:2.4rem auto 0;max-width:40rem;color:#dbeafe;line-height:1.7}
.contatto a{color:#fff;font-weight:600;text-decoration:underline;text-decoration-color:var(--gold-500);text-underline-offset:.22em}
.contatto a:hover{color:var(--gold-300)}
.rubrica{position:relative;display:flex;align-items:center;gap:1.1rem;margin:2.4rem auto 0;max-width:44rem;padding:1.2rem 1.4rem;text-align:left;font-size:clamp(1.02rem,2.2vw,1.2rem);line-height:1.6;color:#e8f4ff;
  background:linear-gradient(135deg,rgba(42,157,244,.22),rgba(42,157,244,.07));border:1px solid rgba(124,196,250,.4);border-radius:18px;box-shadow:0 14px 36px rgba(0,0,0,.26),inset 0 1px 0 rgba(255,255,255,.15);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}
.rubrica::before{content:"";position:absolute;left:0;top:14%;bottom:14%;width:4px;border-radius:0 4px 4px 0;background:linear-gradient(var(--gold-300),var(--gold-500))}
.rubrica-icona{flex:none;width:3rem;height:3rem;display:grid;place-items:center;border-radius:14px;background:linear-gradient(135deg,var(--azure-500),var(--blue-700));border:1px solid var(--azure-300);box-shadow:0 0 20px rgba(42,157,244,.4)}
.rubrica-icona svg{width:1.5rem;height:1.5rem;fill:none;stroke:#fff;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.rubrica p{margin:0}
.rubrica strong{color:#fff;font-weight:700}
.rubrica a{color:var(--gold-300);font-weight:700;text-decoration:underline;text-underline-offset:.22em}
.rubrica a:hover{color:#fff}
@media (max-width:520px){.rubrica{flex-direction:column;text-align:center}}

.avviso{background:#fdecea;color:#a82318;border:1px solid #f2b1ab;border-left:5px solid #c0392b;border-radius:8px;padding:.9rem 1.1rem;margin-bottom:1.5rem;font-weight:500;text-align:left}

/* ===== Pagina Rubrica: passaggi ===== */
.testo-rubrica{max-width:52rem;margin:2.5rem auto 0;color:#dbeafe;text-align:left;line-height:1.8;font-size:1.04rem;counter-reset:passo;display:grid;gap:1rem}
.passo{position:relative;margin:0;padding:1.3rem 1.4rem 1.3rem 4.6rem;background:linear-gradient(160deg,rgba(255,255,255,.10),rgba(255,255,255,.03));border:1px solid var(--bordo);border-radius:18px;box-shadow:0 12px 30px rgba(0,0,0,.2),inset 0 1px 0 rgba(255,255,255,.15);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);counter-increment:passo}
.passo::before{content:counter(passo);position:absolute;left:1.2rem;top:1.2rem;width:2.4rem;height:2.4rem;display:grid;place-items:center;border-radius:50%;font-family:var(--serif);font-weight:700;font-size:1.15rem;color:#fff;background:linear-gradient(135deg,var(--azure-500),var(--blue-700));border:1px solid var(--azure-300);box-shadow:0 0 18px rgba(42,157,244,.4)}
.passo+.passo::after{content:"";position:absolute;left:2.38rem;top:-1.05rem;height:1.05rem;width:2px;background:linear-gradient(var(--azure-300),transparent);opacity:.5}
.testo-rubrica a{color:var(--azure-300);text-decoration:underline;text-underline-offset:.18em;overflow-wrap:anywhere}
.testo-rubrica a:hover{color:#fff}
.nota{padding:1.1rem 1.3rem;border-left:4px solid var(--azure-500);background:linear-gradient(90deg,rgba(42,157,244,.16),rgba(42,157,244,.05));border-radius:0 14px 14px 0;margin:.2rem 0}
.nota.importante{border-left-color:var(--gold-500);background:linear-gradient(90deg,rgba(201,162,75,.18),rgba(201,162,75,.05))}
.nota strong{color:#fff}
.azioni{text-align:center;margin-top:1.2rem}
.btn-rubrica{display:inline-flex;align-items:center;gap:.6rem;padding:.9rem 1.5rem;border-radius:999px;background:linear-gradient(135deg,#2a9df4,#14498a);border:1px solid var(--azure-300);color:#fff!important;text-decoration:none!important;font-weight:700;box-shadow:0 0 22px rgba(42,157,244,.3);transition:transform .18s ease,box-shadow .18s ease}
.btn-rubrica:hover{transform:translateY(-2px);box-shadow:0 0 32px rgba(42,157,244,.55)}
.btn-rubrica svg{width:1.1rem;height:1.1rem;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
@media (max-width:480px){.passo{padding:4.2rem 1.1rem 1.2rem}}

/* ===== Footer ===== */
.piede{color:#b9cde6;padding-bottom:1.5rem;padding-top:1rem}
.piede small{display:inline-block;padding-top:1rem;border-top:1px solid rgba(255,255,255,.12);min-width:min(100%,24rem)}

:focus-visible{outline:3px solid var(--azure-300);outline-offset:3px;border-radius:4px}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}