/* ============================================
   DONATE — tarjeta de donaciones flotante a la derecha.
   Siempre visible en desktop (position: fixed) y vuelve
   al flujo normal abajo del contenido en pantallas estrechas.
   ============================================ */

.donate-zone {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 50;
  width: 280px;
  margin: 0;
  padding: 0;
}

.donate-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 1.25rem;
  text-align: center;
  width: 100%;
  /* Sombra para destacar del contenido detrás cuando flota encima. */
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}
.donate-card h3 {
  color: var(--cyan);
  margin-bottom: 0.4rem;
  font-size: 1.05rem;
}
.donate-card p {
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 0.85rem;
  line-height: 1.4;
}

.paypal-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: #003087;
  color: #fff;
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 700;
  transition: background 0.2s;
  font-size: 0.88rem;
}
.paypal-btn:hover {
  background: #002070;
}

.amounts {
  display: flex;
  gap: 0.4rem;
  justify-content: center;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}
.amt-btn {
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.78rem;
  transition: border-color 0.2s, color 0.2s;
}
.amt-btn:hover,
.amt-btn.selected {
  border-color: var(--accent);
  color: var(--accent);
}

/* Pantallas estrechas: el card flotante taparía el contenido,
   así que vuelve al flujo normal abajo del main. */
@media (max-width: 900px) {
  .donate-zone {
    position: static;
    max-width: 1100px;
    width: auto;
    margin: 0 auto;
    padding: 1rem 2rem 3rem;
    display: flex;
    justify-content: center;
    z-index: auto;
  }
  .donate-card {
    max-width: 420px;
    padding: 1.5rem;
    box-shadow: none;
  }
  .donate-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
  }
  .donate-card p {
    font-size: 0.88rem;
    margin-bottom: 1rem;
    line-height: 1.5;
  }
  .amounts {
    gap: 0.5rem;
    margin-bottom: 1rem;
  }
  .amt-btn {
    padding: 0.4rem 0.9rem;
    font-size: 0.85rem;
  }
  .paypal-btn {
    padding: 0.7rem 1.5rem;
    font-size: 0.95rem;
    gap: 8px;
  }
}