header{
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 40px;
    background-color: #1c1c1c;
    border-bottom: 1px solid #2e2e2e
}
.logo {
    display: flex;
    align-items: center;
    font-size: 22px;
    font-weight: bold;
    background: #fff;
    color: #000;
    padding: 5px 10px;
    border-radius: 6px;
}
nav {
    flex: 1;
    display: flex;
    justify-content: center;
    gap: 24px;
}
nav a {
    color: #888;
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}
nav a:hover {
    color: #fff;
}
.buttons {
    display: flex;
    gap: 10px;
}
.login {
    background: transparent;
    border: 1px solid #2e5eff;
    color: #2e5eff;
    padding: 6px 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
}
.login:hover {
    background: #2e5eff;
    color: #fff;
}
.signup {
    background: #2e5eff;
    border: none;
    color: #fff;
    padding: 6px 14px;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.3s;
}
.signup:hover {
    background: #1c46d9;
}
.dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: 45px;
    background: #1c1c1c;
    border: 1px solid #2e2e2e;
    border-radius: 6px;
    overflow: hidden;
    min-width: 160px;
    z-index: 10;
}
.dropdown a {
    display: block;
    padding: 10px 15px;
    color: #888;
    text-decoration: none;
    transition: background 0.3s, color 0.3s;
}
.dropdown a:hover {
    background: #2e5eff;
    color: #fff;
}
.dropdown.show {
    display: block;
}

body{
    margin: 0;
    height: 100vh;
	background-image: url("https://fireart.studio/wp-content/uploads/2021/02/frame-188-5.jpg");
    background-color: #000;
    font-family: Arial, Helvetica, sans-serif;
    text-align: justify;
    color: aliceblue;
}
.container{
    width: fit-content;
    margin: 80px auto;
    border: 2px solid white;
    padding: 10px;
    border-radius: 10px;
    background-color: black;
}
.tecla{
    background-color: gray;
    width: 80px;
    height: 80px;
    border-radius: 10px;
    font-size: 20px;
    padding: auto;
    cursor: pointer;
}
.tecla:hover{
    background-color: green;
    color: white;
    font-weight: bold;
}
.fila{
    padding: 5px;
    margin: 5px;
}
#operaciondigital{
    background-color: #2e5eff;
    height: 40px;
    padding: 3px;
    text-align: left;
    font-size: 20px;
    margin: 10px;
    border-bottom-right-radius: 10px;
}
#resultado{
    background-color: black;
    height: 80px;
    padding: 3px;
    align-items: center;
    font-size: 50px;
    margin: 10px;
    border-radius: 5px;
    justify-content: end;
    border: 1px solid white;
    display: flex;
}


.social-bar {
    background-color: #000;
	display: flex;
	gap: 10px;
	padding: 10px;
	background-color: #1c1c1c;
    border-radius: 6px;
    justify-content: center;
    align-items: center;
}
.social-bar a { 
	display: inline-block;
	width: 40px;
	height: 40px;
    text-decoration: none;
}
.social-bar img {
	width: 100%;
	height: auto;
    vertical-align: middle;
}
.formato_imagen{
    width: 300px;
    height: 400px;
    border-radius: 12px;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
    margin-bottom: 10px;
}