/* ---------- NAV ---------- */
nav.top{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:100;display:flex;align-items:center;
  background:var(--nav-bg);backdrop-filter:blur(16px) saturate(1.4);-webkit-backdrop-filter:blur(16px) saturate(1.4);border-bottom:1px solid var(--line)}
nav.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--mono);font-weight:700;letter-spacing:.08em;font-size:14px}
.brand img{width:44px;height:44px;border-radius:50%;box-shadow:0 0 0 1px var(--line),0 0 22px rgba(123,134,240,.45)}
.menu{display:flex;list-style:none;gap:2px;align-items:center;flex:1;justify-content:space-evenly;margin:0 clamp(8px,2.2vw,56px)}
.menu>li{position:relative}
.menu>li>a{display:block;padding:10px clamp(7px,.85vw,18px);font-family:var(--mono);font-size:clamp(10.5px,.78vw,14px);letter-spacing:.07em;color:var(--muted);border-radius:8px;transition:.2s}
.menu>li>a:hover{color:var(--text);background:var(--panel)}
.menu>li.active>a{color:var(--a);background:rgba(34,228,255,.07)}
.menu .has>a::after{content:"▾";margin-left:6px;font-size:9px;opacity:.6}
.sub{position:absolute;top:100%;left:0;min-width:190px;list-style:none;padding:8px;margin-top:6px;background:var(--sub-bg);border:1px solid var(--line);border-radius:12px;opacity:0;visibility:hidden;transform:translateY(6px);transition:.2s;box-shadow:0 20px 50px rgba(0,0,0,.5)}
.menu .has:hover .sub,.menu .has:focus-within .sub{opacity:1;visibility:visible;transform:none}
.sub a{display:block;padding:9px 12px;font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;color:var(--muted);border-radius:8px}
.sub a:hover,.sub a.cur{color:var(--a);background:var(--panel)}
.burger{display:none;background:none;border:1px solid var(--line);color:var(--text);width:42px;height:42px;border-radius:10px;cursor:pointer;font-size:18px}

/* interruttore Dark / Light */
.theme{display:inline-flex;align-items:center;gap:2px;border:1px solid var(--line);border-radius:999px;padding:3px;background:var(--panel);cursor:pointer;color:var(--muted);font:inherit;flex:none}
.theme span{display:grid;place-items:center;width:32px;height:28px;border-radius:999px;font-size:14px;line-height:1;transition:.2s}
html:not([data-theme="light"]) .theme .d,html[data-theme="light"] .theme .l{background:var(--grad);color:#04060a}
html[data-theme="light"] .theme .l{color:#fff}
.theme:hover{border-color:var(--a)}
.navr{display:flex;align-items:center;gap:10px}

/* ---------- selettore lingua ---------- */
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:3px;background:var(--panel);flex:none}
.lang button{border:0;background:none;cursor:pointer;font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;color:var(--muted);height:28px;padding:0 11px;border-radius:999px;transition:.2s}
.lang button:hover{color:var(--text)}
.lang button.on{background:var(--grad);color:#04060a;font-weight:700}
html[data-theme="light"] .lang button.on{color:#fff}
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:300;background:var(--sub-bg);border:1px solid var(--line);color:var(--text);font-family:var(--mono);font-size:12px;letter-spacing:.04em;padding:12px 18px;border-radius:12px;box-shadow:0 14px 40px rgba(0,0,0,.35);max-width:90vw}

/* menu sempre su una riga: sotto i 1500px sparisce il testo accanto al logo */
.menu>li>a{white-space:nowrap}
@media(max-width:3499px){.brand span{display:none}}
/* il menu si stringe in proporzione allo schermo (da iPad in orizzontale in su) */
.menu{min-width:0}
.menu>li>a{padding-inline:clamp(4px,.7vw,13px);font-size:clamp(9.5px,.74vw,13px);letter-spacing:clamp(.02em,.004vw + .02em,.07em)}
.menu .has>a::after{margin-left:clamp(2px,.3vw,6px)}
.navr{flex:none}
@media(min-width:1024px) and (max-width:1279px){.menu{margin:0 6px}.menu>li>a{letter-spacing:.02em}.lang button{padding:0 8px}}