body,
html {
    margin: 0;
    padding: 0;
    height: 100%;
    background-color: black;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    user-select: none;
    -webkit-user-drag: none;
    user-drag: none;
}

img {
    height: 100%;
    width: auto;
}

header {
    width: 100%;
    height: 100px;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgba(126, 126, 126, 0.123);
    backdrop-filter: blur(10px);
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    box-sizing: border-box;
    -webkit-user-drag: auto;
    user-drag: auto;
}

.header-content {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    -webkit-user-drag: auto;
    user-drag: auto;
}

.brand {
    font-size: 24px;
    color: rgb(179, 179, 179);
}

nav {
    display: flex;
    gap: 20px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

a {
    color: rgb(179, 179, 179);
    position: relative;
    font-size: 18px;
    text-decoration: none;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -5px;
    transform: translateX(-50%);
    width: 50%;
    height: 2px;
    background-color: white;
    transition: width 0.3s ease;
}

a:hover::after {
    width: 100%;
    background-color: #ffffff;
    box-shadow: 0 0 10px #ffffff;
}

a:hover {
    color: #ffffff;
}

.centered-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(126, 126, 126, 0.123);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    z-index: 2;
    color: white;
}

.centered-content img {
    max-width: 200px;
    height: auto;
}

.centered-content p {
    font-size: 24px;
}