/* Recorte del DEMO: solo Individual + Principiante (8 semanas). */
#modos [data-modo="competencia"],
#modos [data-modo="cooperativo"],
#btn-multi,
#btn-profesor,
#niveles [data-nivel="intermedio"],
#niveles [data-nivel="avanzado"],
#niveles [data-nivel="experto"] { display: none !important; }

/* Muro suave del demo (aparece dentro del juego en la semana 4) */
#demo-gate-overlay{position:fixed;inset:0;z-index:99999;display:flex;align-items:center;justify-content:center;
  background:rgba(5,6,15,.72);backdrop-filter:blur(6px);padding:20px;}
#demo-gate-overlay .dg-card{width:100%;max-width:440px;background:#0f1226;color:#f4f6ff;border:1px solid #242a52;
  border-radius:22px;padding:28px;box-shadow:0 30px 80px rgba(0,0,0,.5);font-family:system-ui,Segoe UI,Roboto,sans-serif;}
#demo-gate-overlay .dg-eyebrow{color:#22e0e6;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;}
#demo-gate-overlay h3{margin:.4em 0 .2em;font-size:24px;line-height:1.15;}
#demo-gate-overlay p.dg-msg{color:#c7ccf0;margin:0 0 18px;font-size:15px;line-height:1.45;}
#demo-gate-overlay input{width:100%;box-sizing:border-box;margin-bottom:10px;padding:12px 14px;border-radius:14px;
  border:1px solid #242a52;background:#0a0c1a;color:#f4f6ff;font-size:15px;}
#demo-gate-overlay input::placeholder{color:#8f97c8;}
#demo-gate-overlay button.dg-go{width:100%;margin-top:4px;padding:13px;border:0;border-radius:999px;cursor:pointer;
  background:#7c5cff;color:#fff;font-size:16px;font-weight:700;}
#demo-gate-overlay button.dg-go:hover{background:#5b34f5;}
#demo-gate-overlay .dg-priv{color:#8f97c8;font-size:12px;text-align:center;margin:12px 0 0;}
#demo-gate-overlay .dg-err{color:#ff4fd8;font-size:13px;text-align:center;margin:8px 0 0;}