/* Estilos base compartidos · desarrollosja.com/juegos */
:root {
  --fondo: #0f0a1f;
  --fondo2: #1b1236;
  --panel: rgba(255,255,255,.06);
  --panel-borde: rgba(255,255,255,.12);
  --texto: #f5f3ff;
  --suave: #b8b0d6;
  --acento: #a855f7;
  --acento2: #ec4899;
  --ok: #22c55e;
  --error: #ef4444;
  --radio: 18px;
  --sombra: 0 20px 50px rgba(0,0,0,.45);
  --fuente: 'Nunito', 'Segoe UI', system-ui, -apple-system, sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--fuente); color: var(--texto); line-height: 1.45;
  min-height: 100vh; background: var(--fondo);
}
body.fondo {
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(168,85,247,.35), transparent 60%),
    radial-gradient(900px 500px at 110% 10%, rgba(236,72,153,.28), transparent 60%),
    radial-gradient(700px 500px at 50% 120%, rgba(20,184,166,.25), transparent 60%),
    var(--fondo);
  background-attachment: fixed;
}
a { color: #d8b4fe; }
h1, h2, h3 { line-height: 1.15; font-weight: 900; letter-spacing: -.01em; }
.suave { color: var(--suave); }
.centro { text-align: center; }
.tarjeta {
  background: linear-gradient(180deg, rgba(255,255,255,.09), rgba(255,255,255,.04));
  border: 1px solid var(--panel-borde); border-radius: var(--radio); box-shadow: var(--sombra);
  backdrop-filter: blur(10px);
}
.contenedor { max-width: 1040px; margin: 0 auto; padding: 20px 16px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 20px; border-radius: 14px; border: 1px solid var(--panel-borde);
  background: rgba(255,255,255,.08); color: var(--texto); font: inherit; font-weight: 800; font-size: 1rem;
  cursor: pointer; text-decoration: none; transition: transform .08s ease, background .15s ease, box-shadow .15s ease;
  -webkit-tap-highlight-color: transparent; user-select: none;
}
.btn:hover { background: rgba(255,255,255,.14); }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.btn.primario { background: linear-gradient(135deg, var(--acento), var(--acento2)); border: 0; box-shadow: 0 10px 30px rgba(168,85,247,.35); }
.btn.primario:hover { box-shadow: 0 12px 34px rgba(236,72,153,.45); }
.btn.grande { padding: 18px 28px; font-size: 1.15rem; border-radius: 18px; }
.btn.bloque { width: 100%; }
.btn.pequeno { padding: 8px 12px; font-size: .85rem; border-radius: 10px; }
.btn.peligro { background: rgba(239,68,68,.15); border-color: rgba(239,68,68,.4); }

.campo { width: 100%; padding: 14px 16px; border-radius: 14px; border: 1px solid var(--panel-borde); background: rgba(0,0,0,.25); color: var(--texto); font: inherit; font-size: 1.05rem; outline: none; }
.campo:focus { border-color: var(--acento); box-shadow: 0 0 0 3px rgba(168,85,247,.25); }
.campo.codigo { text-transform: uppercase; letter-spacing: .3em; font-weight: 900; text-align: center; font-size: 1.5rem; }
label.etiqueta { display: block; font-size: .85rem; color: var(--suave); margin: 0 0 6px 4px; font-weight: 700; }

.alerta { padding: 12px 14px; border-radius: 12px; margin: 10px 0; font-weight: 700; }
.alerta.ok { background: rgba(34,197,94,.15); border: 1px solid rgba(34,197,94,.35); }
.alerta.error { background: rgba(239,68,68,.15); border: 1px solid rgba(239,68,68,.4); }

.chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 10px; border-radius: 999px; background: rgba(255,255,255,.08); border: 1px solid var(--panel-borde); font-size: .85rem; font-weight: 800; }
.oculto { display: none !important; }
code { background: rgba(0,0,0,.3); padding: 2px 6px; border-radius: 6px; }

/* Encabezado del sitio */
.cabecera { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 0; }
.marca { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--texto); font-weight: 900; font-size: 1.1rem; }
.marca .logo { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; background: linear-gradient(135deg, var(--acento), var(--acento2)); font-size: 1.2rem; box-shadow: 0 8px 20px rgba(168,85,247,.4); }
.pie { text-align: center; color: var(--suave); font-size: .85rem; padding: 30px 0 20px; }

@keyframes aparecer { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.aparecer { animation: aparecer .35s ease both; }