/* ============================================================================
   navbar.css — la barra in alto condivisa (logo animato + Accedi + menu a tendina
   col bilanciere). Un solo posto per: chi-sono e le 3 demo (le pagine profilo e la
   landing hanno ancora la loro copia inline, storica — questa nasce per unificare
   le pagine che usano il kit demo).

   Usa --accent per il colore attivo/hover: ogni pagina imposta il suo accento
   (blu/giallo/rosso) e la navbar si intona. Richiede le variabili di tema del kit.
   ========================================================================== */

.top{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px) saturate(1.2);
  background:color-mix(in srgb,var(--bg) 82%,transparent);border-bottom:1px solid var(--line);
  padding-top:env(safe-area-inset-top)}
@media(max-width:820px){.top{backdrop-filter:none;background:var(--bg)}}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:62px;max-width:1040px;margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:center;gap:11px;text-decoration:none}
.brand .wm{display:block;overflow:visible}
.wm-p{transform-box:fill-box;transform-origin:center}
@media(prefers-reduced-motion:no-preference){
  .wm-p{animation:wmLoad .55s cubic-bezier(.2,1.3,.4,1) both}
  .wm-p1{animation-delay:.15s}.wm-p2{animation-delay:.3s}
  .wm-shine{opacity:0;animation:wmShine 1.1s ease-out .6s 1 forwards}
}
@keyframes wmLoad{from{opacity:0;transform:scaleY(.1)}to{opacity:1;transform:scaleY(1)}}
@keyframes wmShine{0%{opacity:0;transform:translateY(-90px)}25%{opacity:.9}100%{opacity:0;transform:translateY(90px)}}
.navtools{display:flex;align-items:center;gap:10px;position:relative}
.menu-btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--mono);font-size:12px;
  letter-spacing:.1em;text-transform:uppercase;color:var(--ink);background:var(--iron-2);
  border:1px solid var(--line-2);border-radius:9px;padding:10px 15px;cursor:pointer;
  transition:border-color .14s ease,background .14s ease}
.menu-btn:hover{border-color:var(--accent);background:var(--iron-3)}
/* Icona bilanciere: barra d'acciaio + 2 dischi per lato (grosso interno, piccolo esterno). */
.menu-btn svg{width:26px;height:20px;display:block;overflow:visible}
.menu-btn .mb-bar{stroke:var(--chalk-dim);stroke-width:2.6;stroke-linecap:round;transition:stroke .14s ease}
.menu-btn .mb-collar{fill:var(--chalk-faint);transition:fill .14s ease}
.menu-btn:hover .mb-bar{stroke:var(--ink)}
.menu-btn:hover .mb-collar{fill:var(--chalk-dim)}
.menu-btn .mb-plate{fill:var(--yellow);transform-box:fill-box;transform-origin:center;
  transition:transform .32s cubic-bezier(.5,0,.75,.3),opacity .28s ease}
.menu-btn[aria-expanded="true"]{border-color:var(--accent)}
.menu-btn[aria-expanded="true"] .mb-plate{transform:translateY(16px) scaleY(.7);opacity:0}
.menu-btn[aria-expanded="true"] .mb-p1{transition-delay:.03s}
.menu-btn[aria-expanded="true"] .mb-p2{transition-delay:0s}
.menu-btn[aria-expanded="true"] .mb-p3{transition-delay:.05s}
.menu-btn[aria-expanded="true"] .mb-p4{transition-delay:.02s}
.acc-btn{padding:10px 18px;text-decoration:none}
@media(max-width:520px){
  .acc-btn{padding:9px 13px;font-size:12px}
  .top .wrap{padding:0 14px}
  .brand .wm{height:42px}
  .navtools{gap:7px}
  .menu-btn{padding:9px 12px;gap:7px;letter-spacing:.06em}
  .menu-btn svg{width:22px}
}
@media(max-width:380px){
  .brand .wm{height:38px}
  .top .wrap{padding:0 11px}
  .menu-btn{padding:9px 10px}
}
/* NB: sulle pagine demo è incluso anche app.css, che ha una regola sull'ELEMENTO
   `nav{position:fixed;display:flex}` (la barra in basso dell'app vera). Questa tendina
   è anch'essa un <nav>: senza blindarla, quella regola la infettava e il box collassava
   in altezza (~16px) — lo sfondo copriva una riga sola e le voci restavano "nude" sul
   testo della pagina. Per questo qui `position`, `display` e soprattutto `height` sono
   ESPLICITI e forzati: la tendina non deve mai ereditare da `nav{}`. */
.topnav{position:absolute!important;top:calc(100% + 10px);right:0;bottom:auto;left:auto;
  min-width:216px;height:fit-content;flex-direction:column;
  align-items:stretch;gap:0;background:var(--iron-2);border:1px solid var(--line-2);border-radius:12px;
  padding:7px;box-shadow:0 24px 50px -18px rgba(0,0,0,.7);
  opacity:0;transform:translateY(-8px) scale(.98);transform-origin:top right;pointer-events:none;
  transition:opacity .16s ease,transform .16s ease;display:flex;z-index:50}
.topnav.open{opacity:1;transform:none;pointer-events:auto}
.topnav a.lnk{font-family:var(--mono);font-size:13px;letter-spacing:.04em;text-transform:uppercase;
  color:var(--chalk-dim);text-decoration:none;padding:12px 14px;border-radius:8px;
  display:flex;align-items:center;justify-content:space-between;transition:background .12s ease,color .12s ease}
.topnav a.lnk::after{content:"→";opacity:0;transform:translateX(-4px);color:var(--accent);
  transition:opacity .14s ease,transform .14s ease}
.topnav a.lnk:hover{background:var(--iron-3);color:var(--ink)}
.topnav a.lnk:hover::after{opacity:1;transform:none}
.topnav a.lnk.on{color:var(--accent)}
/* raggruppatore "Per chi": etichetta + le 3 voci indentate sotto */
.topnav .nav-h{font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--chalk-faint);padding:9px 14px 4px;pointer-events:none}
.topnav a.nav-sub{padding-left:24px;font-size:12px}
.topnav .nav-sep{height:1px;background:var(--line);margin:6px 8px}