* {
    margin: 0;
    padding: 0;
}
body{
    height: 100vh;
    display: flex;
    flex-direction: column;
}
header{
    display: flex;
    height: 50px;
    padding: 10px;
    justify-content: space-between;
    align-items: center;
    background-color: rgb(255, 249, 249);
    color: rgb(41, 40, 40);
    text-align: center;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    
}
a{
    text-decoration: none;
    color: black;
}
.nav-principal{
    width: 100%;
    height: 80%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    padding: 20px;
    box-sizing: border-box;
    
    font-family: Arial, Helvetica, sans-serif;
    background-color: rgb(61, 90, 99);
}
.aria1{
    width: 400px;
    height: 80%;
    background: linear-gradient(145deg,  rgb(0, 81, 255) 30% , rgb(71, 81, 102) );
    display: flex;
    flex-direction: column;
    padding: 10px;
    box-sizing: border-box;
    border: 3px solid rgb(0, 0, 0);
    border-radius: 16px;
    align-items: center;
    justify-content: space-between;
    color: white;
    transition: box-shadow 0.3s ease;
    font-size: 14px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease, transform 1s ease;
}
.aria1.visivel{
    opacity: 1;
    transform: translateY(0);
}
.aria1:hover{
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    /* transform: translateY(-5px);  */
}
.aria1-content{
    /* height: 100%; */
    width: 100%;
    font-weight: 600;
    padding-left: 30px;

}
.aria1-content ul{
    margin-top: 10px;
}
.aria1-content li{
    margin-bottom: 20px;
}
.btn-acessar{
    height: 60px;
}
.acessar{
    display: inline-block;
    padding:10px 20px ;
    border-radius: 10px;
    border: transparent;
    text-decoration: none;
    color: black;
    background-color: azure;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
}
.acessar:hover{
    background-color: lightblue;
}
.acessar:active{
    transform: scale(1.1);
}
footer{
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    margin-top: 10px;
    gap: 10px;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    font-weight: 600;
}

.participantes{
    display: flex;
    gap: 10px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  padding: 8px 16px;
  background: #000;
  color: #fff;
  border-radius: 0 0 8px 0;
  z-index: 9999;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}

@media (max-width: 600px) {
    header{
        box-sizing: border-box;
        gap: 30px;
    }
    header h2 {
        font-size: 14px;
    }
    header p{
        font-size: 10px;
    }

    #nav-principal{
        flex-direction: column;
        max-width: 100%;
        height: 1400px;
    }
    .aria1{
        width: 320px;
    }
    .aria1-content{
        padding: 10px;
    }
    .aria1 li{
        list-style: none;
    }
    .participantes{
        text-align: center;
    }
}