* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}

header {
    display: flex;
    height: 50px;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid #ccc;
}

ul {
    display: flex;
    gap: 100px;
    list-style: none;
    margin-left: 100px;
    cursor: pointer;
}

li {
    font-size: 12px;
    font-weight: 400;
    color: #666;
}
.logo {
    height: 20px;
}
.main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 50px;
}

.titulo-iphone {
 font-size: 40px;
}

.titulo-secundario {
 font-size: 40px;
 margin-top: 10px;
 margin-bottom: 20px;
}

.paragrafo {
 font-size: 15px;
 margin-bottom: 25px;
}

.preco { 
    font-size: 20px;
    color: #626262;
    font-weight: 300;
    margin-bottom: 30px;
}

.btn {
    background-color: #0071e3;
    color: #ffffff;
    padding: 10px 20px;
    border: none;
    border-radius: 20px;
    font-size: 20px;
    cursor: pointer;
}

.trocar-cor {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background-color: #81A5C4;
    cursor: pointer;

}
.azul {
   background-color: #81A5C4;
}

.amarelo {
    background-color: #F7DA47;
}

.branco {
    background-color:#C1C1C1C1;
}

.preto {
    background-color: #272D33;
}

.vermelho {
    background-color:#B50012;
}

.roxo {
    background-color:#EDE7F1; 
}

.escolha-cor{
    font-size: 16px;
    color: #3a3a3a;
    font-weight: 700;
    margin-top: 50px;
    margin-bottom: 15px;
}


.img-iphone {
    width: 450px;
    margin-top: 100px;
    z-index: 99;
}

.circulo {
    width: 100%;
    height: 170%;
    background: #81A5C4; 
    position: absolute;
    top: 0;
    left: 0;
    clip-path: circle(600px at right 1000px);
}