/* Pagine di accesso e invito: semplici, chiare, nello stile scuro dell'app. */
:root{
  --bg:#000; --card:#0e0e10; --ink:#f4f1ea; --mut:#8f8f96; --line:#26262b; --field:#151518; --focus:#f4f1ea;
  --err-bg:rgba(255,107,94,.12); --err:#ff9a90; --ok-bg:rgba(62,207,159,.12); --ok:#7fe3c0;
  --ui:"Manrope",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%;background:var(--bg)}
body{font-family:var(--ui);font-size:15px;line-height:1.5;color:var(--ink);
  display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;
  padding:max(24px,env(safe-area-inset-top)) 18px max(24px,env(safe-area-inset-bottom));-webkit-font-smoothing:antialiased}
.shell{width:100%;max-width:380px}
.brand{display:flex;align-items:center;gap:12px;justify-content:center;margin-bottom:30px;font-weight:700;font-size:13px;letter-spacing:.32em;text-transform:uppercase}
.mark{width:28px;height:28px;border-radius:9px;background:#f4f1ea}
.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:28px 24px}
h1{font-size:22px;font-weight:700;letter-spacing:-.01em}
.lead{color:var(--mut);font-size:14px;margin-top:4px;margin-bottom:24px}
label{display:block;font-size:13px;font-weight:600;margin-bottom:7px;color:#d8d5ce}
.field{margin-bottom:16px}
.input{position:relative}
input[type=email],input[type=password],input[type=text]{width:100%;height:50px;border:1px solid var(--line);border-radius:14px;padding:0 14px;font:inherit;color:var(--ink);background:var(--field);transition:border-color .15s,box-shadow .15s}
input::placeholder{color:#5c5c63}
input:focus{outline:none;border-color:#6b6b72;box-shadow:0 0 0 3px rgba(244,241,234,.12)}
input[readonly]{color:var(--mut)}
input:-webkit-autofill{-webkit-text-fill-color:var(--ink);-webkit-box-shadow:0 0 0 40px var(--field) inset;caret-color:var(--ink)}
.reveal{position:absolute;right:5px;top:5px;height:40px;padding:0 12px;border:0;background:none;color:var(--mut);font:inherit;font-size:13px;font-weight:600;cursor:pointer;border-radius:10px}
.reveal:hover{color:var(--ink)}
.reveal:focus-visible{outline:2px solid var(--focus)}
.input input.pw{padding-right:80px}
.btn{width:100%;height:50px;border:0;border-radius:999px;background:var(--ink);color:#111;font:inherit;font-weight:800;font-size:15px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:10px;margin-top:8px;transition:opacity .15s}
.btn:hover{opacity:.92}
.btn:disabled{opacity:.5;cursor:default}
.btn:focus-visible{outline:2px solid var(--focus);outline-offset:3px}
.msg{display:none;border-radius:14px;padding:11px 14px;font-size:14px;margin-bottom:16px}
.msg.show{display:block}
.msg.err{background:var(--err-bg);color:var(--err)}
.msg.ok{background:var(--ok-bg);color:var(--ok)}
.hint{font-size:12px;color:var(--mut);margin-top:7px}
.foot{text-align:center;color:var(--mut);font-size:13px;margin-top:22px;line-height:1.6}
.foot a{color:var(--ink);font-weight:600}
.spin{width:16px;height:16px;border:2px solid rgba(0,0,0,.2);border-top-color:#111;border-radius:50%;animation:sp .8s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.cf{margin:4px 0 12px}
.hide{display:none!important}
@media (prefers-reduced-motion:reduce){.spin{animation-duration:2s}}