/* Protezione base — deterrenza copia */
    body { -webkit-user-select: none; -moz-user-select: none; user-select: none; }
    /* Ma permetti la selezione negli output e textarea */
    .output-box, textarea, input, [contenteditable] { -webkit-user-select: text; -moz-user-select: text; user-select: text; }
  
/* ── LOGIN SCREEN ──────────────────────────────────────── */
#loginScreen {
  position:fixed;inset:0;z-index:99999;
  background:#07070f;
  display:flex;align-items:center;justify-content:center;
}
#loginScreen.hidden { display:none; }
.login-box {
  background:var(--card);border:1px solid var(--border);
  border-radius:16px;padding:2.5rem 2rem;width:100%;max-width:400px;
  display:flex;flex-direction:column;gap:1.2rem;
}
.login-logo { font-family:'Inter',sans-serif;font-size:1.6rem;font-weight:800;color:var(--brand);text-align:center;letter-spacing:-.5px; }
.login-sub { font-size:.82rem;color:var(--muted);text-align:center;margin-top:-.6rem; }
.login-field label { font-size:.72rem;color:var(--muted);display:block;margin-bottom:.3rem; }
.login-field input { width:100%;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:.55rem .8rem;color:var(--text);font-size:.88rem;box-sizing:border-box; }
.login-field input:focus { outline:none;border-color:var(--brand); }
.login-btn { background:var(--brand);color:#000;border:none;border-radius:10px;padding:.7rem;font-size:.9rem;font-weight:700;cursor:pointer;width:100%;transition:.15s; }
.login-btn:hover { opacity:.88; }
.login-err { color:#ff4444;font-size:.75rem;text-align:center;min-height:1rem; }
.login-note { font-size:.68rem;color:var(--muted);text-align:center; }