/* ═══════════════════════════════════════════════════════════
   Volo Sereno — stile condiviso degli articoli del blog.
   Un solo file per tutte le pagine: il browser lo scarica una
   volta e lo riusa, così gli articoli successivi aprono subito.
   Palette e caratteri identici al resto del sito.
   ═══════════════════════════════════════════════════════════ */

:root{--primary:#0284C7;--secondary:#7DD3FC;--accent:#F59E0B;--accent-deep:#D97706;
  --fg:#0F172A;--bg:#F0F9FF;--border:#E0F0F8;
  --serif:'Lora',Georgia,serif;--sans:'Raleway',-apple-system,sans-serif;
  --ease-out:cubic-bezier(.22,.61,.36,1)}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--sans);color:#26384a;background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased}
/* height:auto serve perché gli attributi width/height sull'<img> hanno la
   precedenza su aspect-ratio: senza questo le immagini vengono altissime. */
img{display:block;max-width:100%;height:auto}

/* ═══ Striscia in alto ═══ */
.topbar{position:fixed;top:0;left:0;right:0;z-index:200;
  background:rgba(15,23,42,.94);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.09)}
.tbwrap{max-width:1180px;margin:0 auto;padding:11px clamp(16px,3vw,28px);
  display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none}
.brand svg{width:26px;height:26px;flex:none}
.brand b{font-family:var(--serif);font-weight:600;font-size:1.02rem;letter-spacing:.02em}
.tbnav{display:flex;align-items:center;gap:clamp(12px,2vw,26px)}
.tbnav a{color:#cfe0ee;text-decoration:none;font-size:.92rem;font-weight:600;transition:color .2s var(--ease-out)}
.tbnav a:hover{color:#fff}
.tbnav a[aria-current="page"]{color:#fff}
.tbnav a.tbcta{background:linear-gradient(180deg,var(--accent),var(--accent-deep));color:#3a2400;
  padding:10px 20px;border-radius:999px;animation:ctaPulse 2.8s cubic-bezier(.65,0,.35,1) infinite}
.tbnav a.tbcta:hover{transform:translateY(-1px);color:#3a2400}
@media (max-width:620px){.tbnav a.tbcta{padding:9px 15px;font-size:.84rem}.tbnav a{font-size:.86rem}}
@media (max-width:480px){
  .brand b{display:none}
  .tbwrap{gap:10px;padding-left:14px;padding-right:14px}
  .tbnav{gap:11px}
  .tbnav a{font-size:.82rem}
  .tbnav a.tbcta{padding:9px 14px;font-size:.82rem}
}

/* ═══ Testata dell'articolo ═══ */
.top{background:var(--fg);color:#fff;padding:calc(clamp(30px,5vw,52px) + 66px) 24px clamp(34px,5vw,52px)}
.top .wrap{max-width:760px;margin:0 auto}
.crumb{font-size:.84rem;color:#8fb6d4;margin-bottom:18px}
.crumb a{color:#8fb6d4;text-decoration:none}
.crumb a:hover{color:#fff}
h1{font-family:var(--serif);font-weight:600;font-size:clamp(1.85rem,4.8vw,2.75rem);line-height:1.16;color:#fff}
h1 em{font-style:italic;color:#ffd88a}
.artmeta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:20px;color:#9fc4e0;font-size:.88rem}
.artmeta span{display:inline-flex;align-items:center;gap:7px}
.artmeta svg{width:15px;height:15px}

.cover{max-width:820px;margin:0 auto;padding:0 24px;transform:translateY(-24px)}
.cover img{width:100%;height:auto;border-radius:20px;box-shadow:0 22px 50px rgba(11,26,41,.26)}
.cover figcaption{font-size:.84rem;color:#6b8299;text-align:center;margin-top:12px;font-style:italic}

/* ═══ Corpo ═══ */
main{max-width:760px;margin:0 auto;padding:8px 24px 20px}
h2{font-family:var(--serif);font-weight:600;color:var(--fg);
  font-size:clamp(1.4rem,3.2vw,1.9rem);line-height:1.24;margin:44px 0 16px}
h3{font-family:var(--sans);font-weight:700;color:var(--fg);font-size:1.08rem;margin:26px 0 8px}
p{margin-bottom:16px;font-size:1.05rem}
p.lead{font-size:clamp(1.1rem,2.4vw,1.26rem);color:#3b556b;line-height:1.62}
strong{color:var(--fg)}
ul,ol{margin:0 0 18px 22px}
li{margin-bottom:10px;font-size:1.04rem}
em.big{display:block;font-family:var(--serif);font-style:italic;color:var(--primary);
  font-size:clamp(1.16rem,2.7vw,1.44rem);line-height:1.42;margin:26px 0;padding-left:20px;
  border-left:4px solid rgba(2,132,199,.28)}
.inline-link{color:var(--primary);font-weight:700;text-decoration:none;border-bottom:2px solid rgba(2,132,199,.25);
  transition:border-color .2s var(--ease-out)}
.inline-link:hover{border-color:var(--primary)}

/* indice interno: aiuta la lettura e i link di sezione su Google */
.toc{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px 26px;margin:30px 0 6px}
.toc b{display:block;font-family:var(--serif);color:var(--fg);font-size:1.02rem;margin-bottom:12px}
.toc ol{margin:0 0 0 20px}
.toc li{margin-bottom:7px;font-size:.99rem}
.toc a{color:var(--primary);text-decoration:none}
.toc a:hover{text-decoration:underline}

.callout{background:#fff;border:1px solid var(--border);border-left:4px solid var(--primary);
  border-radius:14px;padding:22px 26px;margin:28px 0}
.callout p:last-child{margin-bottom:0}
.callout.warm{border-left-color:var(--accent);background:#fffaf3;border-color:#f6e2c4}

.checks{list-style:none;margin:20px 0 22px}
.checks li{display:flex;gap:12px;align-items:flex-start;margin-bottom:13px}
.checks svg{width:19px;height:19px;flex:none;margin-top:5px;color:var(--primary)}

.steplist{list-style:none;margin:22px 0;counter-reset:s}
.steplist li{counter-increment:s;background:#fff;border:1px solid var(--border);border-radius:16px;
  padding:20px 24px 20px 66px;margin-bottom:14px;position:relative}
.steplist li::before{content:counter(s);position:absolute;left:20px;top:20px;
  width:32px;height:32px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.9rem}
.steplist b{display:block;color:var(--fg);margin-bottom:5px;font-size:1.04rem}
.steplist p{margin:0;font-size:1rem}

.two{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:24px 0}
@media (max-width:700px){.two{grid-template-columns:1fr}}
.col{background:#fff;border:1px solid var(--border);border-radius:16px;padding:22px 24px}
.col.no{background:#fffaf3;border-color:#f6e2c4}
.col h3{font-family:var(--serif);font-size:1.12rem;margin:0 0 12px}
.col ul{list-style:none;margin:0}
.col li{display:flex;gap:10px;align-items:flex-start;margin-bottom:10px;font-size:.98rem;line-height:1.55}
.col svg{width:18px;height:18px;flex:none;margin-top:4px}
.col.yes svg{color:#0f8a4d}
.col.no svg{color:#c2410c}

/* ═══ Domande frequenti ═══ */
.faqbox{margin-top:14px}
.faqbox details{background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:18px 22px;margin-bottom:12px}
.faqbox summary{cursor:pointer;font-weight:700;color:var(--fg);font-size:1.02rem;list-style:none}
.faqbox summary::-webkit-details-marker{display:none}
.faqbox summary::after{content:'+';float:right;color:var(--primary);font-weight:700;font-size:1.3rem;line-height:1}
.faqbox details[open] summary::after{content:'\2013'}
.faqbox .ans{margin-top:12px;font-size:1.01rem;color:#4a637a}

/* ═══ Chi scrive + avvertenza ═══ */
.author{background:var(--fg);color:#cfe0ee;border-radius:20px;padding:clamp(24px,4vw,34px);margin:44px 0 0}
.author b{display:block;font-family:var(--serif);color:#fff;font-size:1.14rem;margin-bottom:10px}
.author p{font-size:.99rem;color:#a9c2d6;margin-bottom:12px}
.author p:last-child{margin-bottom:0}
.author strong{color:#fff}
.author a{color:#ffd88a;font-weight:600;text-decoration:none}
.author a:hover{text-decoration:underline}

.disclaimer{border:1px dashed #c9d9e6;border-radius:14px;padding:18px 22px;margin:26px 0 0;color:#5b748c}
.disclaimer p{font-size:.92rem}
.disclaimer p:last-child{margin-bottom:0}

/* ═══ Articoli collegati ═══ */
.related{max-width:760px;margin:0 auto;padding:48px 24px 0}
.related h2{margin-top:0}
.relgrid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:700px){.relgrid{grid-template-columns:1fr}}
.relcard{background:#fff;border:1px solid var(--border);border-radius:16px;overflow:hidden;
  text-decoration:none;color:inherit;transition:transform .2s var(--ease-out),box-shadow .2s var(--ease-out)}
.relcard:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(11,26,41,.12)}
.relcard img{width:100%;aspect-ratio:12/5;object-fit:cover}
.relcard span{display:block;padding:16px 20px 20px;font-weight:700;color:var(--fg);font-size:1rem;line-height:1.36}

/* ═══ Chiusura ═══ */
.cta{text-align:center;padding:clamp(40px,6vw,62px) 24px clamp(52px,7vw,76px);max-width:760px;margin:0 auto}
.cta h2{margin-top:0;margin-bottom:10px}
.cta p{color:#4a637a;margin-bottom:26px}
.btnrow{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;border:none;
  font-family:var(--sans);font-weight:700;font-size:1rem;padding:16px 30px;border-radius:999px;min-height:54px;
  text-decoration:none;transition:transform .2s var(--ease-out)}
.btn-primary{background:linear-gradient(180deg,var(--accent),var(--accent-deep));color:#3a2400;
  animation:ctaPulse 2.8s cubic-bezier(.65,0,.35,1) infinite}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{background:rgba(2,132,199,.09);color:var(--primary)}
.btn-ghost:hover{background:rgba(2,132,199,.15);transform:translateY(-2px)}
.btn svg{width:18px;height:18px}
@keyframes ctaPulse{
  0%,100%{box-shadow:0 12px 26px rgba(245,158,11,.38), 0 0 0 0 rgba(245,158,11,.5)}
  50%{box-shadow:0 15px 32px rgba(245,158,11,.52), 0 0 0 13px rgba(245,158,11,0)}}
@media (prefers-reduced-motion:reduce){
  .btn-primary{animation:none;box-shadow:0 12px 26px rgba(245,158,11,.38)}
  .relcard,.card{transition:none}}

/* ═══ Piede ═══ */
footer{background:var(--fg);color:#c7d6e2;padding:52px 24px;text-align:center}
footer .fbrand{display:inline-flex;align-items:center;gap:10px;color:#fff;margin-bottom:6px}
footer .fbrand svg{width:24px;height:24px}
footer b{font-family:var(--serif);color:#fff;font-weight:600;letter-spacing:.03em;font-size:1.1rem}
footer .payoff{font-family:var(--serif);font-style:italic;color:#9fc4e0;font-size:1.05rem;margin-top:4px}
footer .fsocial{display:flex;justify-content:center;gap:16px;margin:22px 0 18px}
footer .fsocial a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.08);
  display:flex;align-items:center;justify-content:center;color:#c7d6e2;transition:background .2s var(--ease-out),color .2s var(--ease-out)}
footer .fsocial a:hover{background:rgba(255,255,255,.16);color:#fff}
footer .fsocial svg{width:19px;height:19px}
footer .fl{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 22px;margin-bottom:20px}
footer .fl a{color:#c7d6e2;text-decoration:none;font-size:.9rem;font-weight:500}
footer .fl a:hover{color:#fff}
footer small{display:block;color:#8aa3b8;font-size:.8rem;line-height:1.6}