.section-header {
  position: relative;
  display: flex;
   justify-content: center;
    align-items: center;
  background: #001341;
  padding: 50px 300px;
  width: max-content; 
  margin: 50px auto; 

}
.section-header::after {
  content: "";
  position: absolute;
  top: 8px;      
  left: 8px;      
  width: 100%;
  height: 100%;
  background: #1e90ff;   
  z-index: -1;          
}

.section-header .titulo {
  position: absolute;
  top: 50%;         
  left: 50%;        
  transform: translate(-50%, -50%); 
  color: white;     
  font-size: 30px;   
  font-weight: bold;
  text-align: center;
}

.subtitulo{
    color:#FFFFFF
}

.atividade {
    position: relative;
    h1, h2, h3 {
    margin-bottom: 10px;
    color: #FFFFFF;
    display: flex;
    font-size: 45px;
    justify-content: center;
    align-items: center;
    }
    margin-top: 50px;
    margin-bottom: 30px;
    margin-left: 14rem;
    margin-right: 14rem;
}
.atividade .fundo {
    position: absolute;  
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%); 
    width: 100%;
    height: 100%;
    background-color: #001341;
    z-index: 0;  
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 18px;
}


.atividade > *:not(.fundo) {
    position: relative;
    z-index: 1;
}



.subtitulo{
    display: flex;
    justify-content: center;
}
.galeria {
    position: relative;
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 20px;
    flex-wrap: wrap;
}

.galeria img {
    max-width: 100%;
    margin-bottom: 10px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    transition: transform 0.3s;
}

.galeria img:hover {
    transform: scale(1.03);
}


.imagens-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    cursor: pointer;
}

.horizontal {
  width: 325px;
  height: 203px;
}

.vertical {
  width: 325px;
  height: 474px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.8);
    justify-content: center;
    align-items: center;
}

.modal img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 8px;
}

.modal-close {
    position: fixed;
    top: 30px;
    right: 30px;
    font-size: 30px;
    color: white;
    background: none;
    border: none;
    cursor: pointer;
}

/* Botão voltar ao topo */
#topo-btn {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 998;
    border: none;
    outline: none;
    background-color: #333;
    color: white;
    cursor: pointer;
    padding: 12px 16px;
    border-radius: 50%;
    font-size: 20px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

#topo-btn:hover {
    background-color: #555;
}

/*--------------------Responsive--------------------*/
@media screen and (min-width: 1800px) {
    .container-header {
        padding: 50px 60px;
    }

    .container-header h2 {
        font-size: 50px;
        margin-bottom: 20px;
        font-weight: bold;
    }

    .container-header h3 {
        font-size: 30px;
        margin-bottom: 20px;
        font-weight: normal;
    }

    .container-header p {
        font-size: 16px;
        font-weight: normal;
    }

    .container-body {
        padding: 50px 60px;
    }

    .container-body p {
        font-size: 20px;
        font-weight: medium;
    }
  
}

@media screen and (min-width: 1025px) and (max-width: 1800px){
     .container-header {
        padding: 50px 60px;
    }

    .container-header h2 {
        font-size: 50px;
        margin-bottom: 20px;
        font-weight: bold;
    }

    .container-header h3 {
        font-size: 30px;
        margin-bottom: 20px;
        font-weight: normal;
    }

    .container-header p {
        font-size: 16px;
        font-weight: normal;
    }

    .container-body {
        padding: 50px 60px;
    }

    .container-body p {
        font-size: 20px;
        font-weight: medium;
    }

 
.galeria {
    position: relative;
    display: flex;
    justify-content: center;
    gap: 15px;
    padding: 20px;
    flex-wrap: nowrap; 
    overflow-x: auto;  
}

}

@media screen and (min-width: 601px) and (max-width: 1024px) {
   .container-header {
        padding: 20px 70px;
    }

    .container-header h2 {
        font-size: 24px;
        margin-bottom: 15px;
    }

    .container-header h3 {
        font-size: 16px;
        margin-bottom: 15px;
    }

    .container-header p {
        font-size: 9px;
        font-weight: normal;
    }

    .container-body {
        padding: 20px 50px;
    }

    .container-body p {
        font-size: 14px;
        text-indent: 2em;
    }
    .section-header {
    padding: 20px;        
    margin: 20px auto;     
    width: 90%;           
  }

  .section-header .titulo {
    font-size: 25px;       
  }

  .atividade {
    margin: 20px;          
  }

  .atividade h1,
  .atividade h2,
  .atividade h3 {
    font-size: 22px;      
    text-align: center;    
  }

  .galeria {
    flex-direction: column;  
    align-items: center;     
    gap: 10px;
  }

  .horizontal,
  .vertical {
    width: 100%;          
    height: auto;        
    max-width: 280px;     
  }

  .modal img {
    max-width: 95%;
    max-height: 70%;
  }

  #topo-btn {
    bottom: 15px;
    right: 15px;
    padding: 8px 10px;
    font-size: 16px;
  }

}

@media screen and (max-width: 600px) {
      .container-header {
        padding: 20px 40px;
    }

    .container-header h2 {
        font-size: 20px;
        margin-bottom: 10px;
    }

    .container-header h3 {
        font-size: 10px;
        margin-bottom: 10px;
    }

    .container-header p {
        font-size: 5px;
        font-weight: normal;
    }

    .container-body {
        padding: 20px 40px;
    }

    .container-body p {
        font-size: 10px;
        text-indent: 2em;
    }

.section-header {
    padding: 20px;        
    margin: 20px auto;     
    width: 90%;           
  }

  .section-header .titulo {
    font-size: 10px;       
  }

  .atividade {
    margin: 20px;          
  }

  .atividade h1,
  .atividade h2,
  .atividade h3 {
    font-size: 22px;      
    text-align: center;    
  }

  .galeria {
    flex-direction: column;  
    align-items: center;     
    gap: 10px;
  }

  .horizontal,
  .vertical {
    width: 100%;          
    height: auto;        
    max-width: 280px;     
  }

  .modal img {
    max-width: 95%;
    max-height: 70%;
  }

  #topo-btn {
    bottom: 15px;
    right: 15px;
    padding: 8px 10px;
    font-size: 16px;
  }

   
}