/* RESET */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', sans-serif;
}

/* FONDO GENERAL */
body {
  height: 100vh;
  background: linear-gradient(to bottom, #f5f5f5, #9bd3b0);
  display: flex;
  justify-content: center;
  align-items: center;
}

/* CONTENEDOR PRINCIPAL */
.container {
  width: 100%;
  max-width: 420px;
  padding: 20px;
  text-align: center;
}

/* LOGO */
.logo {
  width: 200px;
  margin: 40px auto;
  display: block;
}

/* INPUT NOMBRE */
.input-name {
  width: 100%;
  padding: 15px;
  border-radius: 15px;
  border: none;
  font-size: 18px;
  text-align: center;
  background: #e9e9e9;
  margin-bottom: 25px;
  outline: none;
  transition: 0.3s;
}

.input-name:focus {
  background: #ffffff;
  box-shadow: 0 0 0 2px #2fb463;
}

/* AVATARES */
.avatar-container {
  display: flex;
  justify-content: space-around;
  margin-bottom: 30px;
}

.avatar {
  width: 120px;
  height: 120px;
  border-radius: 20px;
  background: rgba(255,255,255,0.4);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: 0.3s;
  border: 3px solid transparent;
}

.avatar img {
  width: 70px;
}

/* SELECCIONADO */
.avatar.selected {
  border: 3px solid #2fb463;
  box-shadow: 0 0 15px rgba(47,180,99,0.5);
  transform: scale(1.05);
}

/* BOTÓN */
.btn-start {
  width: 100%;
  padding: 18px;
  border: none;
  border-radius: 20px;
  background: #2fb463;
  color: white;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  transition: 0.3s;
}

/* HOVER BOTÓN */
.btn-start:hover {
  background: #28a85b;
  transform: translateY(-2px);
}

/* EFECTO CLICK */
.btn-start:active {
  transform: scale(0.97);
}

/* RESPONSIVE */
@media (max-width: 400px) {
  .avatar {
    width: 100px;
    height: 100px;
  }

  .avatar img {
    width: 60px;
  }
}