@keyframes fade-in {
    from {opacity: 0}
    50% {opacity: 0}
    to {opacity: 1}
}

@font-face {
    font-family: "ITC Machine";
    src: url("../fonts/ITC\ Machine\ Bold.otf") format("opentype"),
}

body {
    position: relative;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    height: 100vh;
    color: #ffffff;
}

.title-login {
    position: relative;
    z-index: 2;
    top: 10%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    justify-self: center;
    width: 80%;
    max-width: 400px;
    min-width: 200px;
}

.background {
    position: absolute;
    width: 100vw;
    height: 100vh;
    object-fit: cover;
    object-position: top;
    z-index: -1;
    top: 0p;
    filter: brightness(60%);
}

.title {
    justify-self: center;
    position: relative;
    top: 10%;
    margin: 0 0 2rem 0;
    font-size: clamp(5rem, 25vw, 20rem);
    font-family: "ITC Machine", 'Times New Roman', Times, serif;
}

.title::after {
    position: absolute;
    inset: 0 0 0 0;
    content: "BATTLESHIP";
    z-index: 2;
    -webkit-text-stroke: 5px black;
    color: transparent;
}

.difficulty-buttons {
    display: flex;
    width: 100%;
    margin-top: 1rem;
    justify-content: space-evenly;
}

.threeD {
    position: absolute;
    top: 0;
    z-index: 2;
}

.game-container {
    box-sizing: content-box;
    display: flex;
    flex-wrap: wrap;
    justify-self: center;
    position: relative;
    top: 3rem;
    border: solid black 2px;
    max-width: 510px;
    width: 80%;
    aspect-ratio: 1 / 1;
    margin-top: 0;
    z-index: 5;
}

h3 {
    margin: 0;
}

.boxes {
    background-color: beige;
    box-sizing: border-box;
    max-width: 200px;
    width: 33.333333333333%;
    aspect-ratio: 1 / 1;
    border: solid black 2px;
}

.result {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 10px;
    background-color: #00000099;
    top: 0;
    color: #ffffff;
    animation: fade-in 1s;
}

.btn {
    background: linear-gradient(#ffb703, #fb8500) ;
    border: solid 2px #fb8500;
    border-radius: 10px;
    color: white;
    padding: .45rem .85rem;
    text-decoration: none;
}

.menu {
    display: none;
    position: relative;
    left: 50%;
    translate: -50%;
    bottom: -4rem;
}

@keyframes fade-in-red {
    from {background-color: beige}
    to {background-color: red}
}

@keyframes fade-in-grey {
    from {background-color: beige}
    to {background-color: grey}
}



.red {
    background-color: red;
    animation: fade-in-red .5s;
}

.grey {
    background-color: grey;
    animation: fade-in-grey .5s;
}

/* medium level classes */