* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    background: #000;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

.photo {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease;
}
.photo.active {
    opacity: 1;
}

#title {
    position: absolute;
    top: 1.5vh;
    left: 1.5vw;
    right: 1.5vw;
    z-index: 10;
    color: #abebff;
    font:
        700 clamp(1.5rem, 6vw, 4rem)/1.2 "Sora",
        sans-serif;
    text-align: center;
    letter-spacing: 0.03em;
    white-space: nowrap;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    padding: 0.5em 0;
    border-radius: 1rem;
    pointer-events: none;
    transition: transform 0.5s ease;
}
#title.hidden {
    transform: translateY(calc(-100% - 2vh));
}

#error {
    display: none;
    position: absolute;
    inset: 0;
    color: #555;
    font: 1.2rem/1.5 sans-serif;
    justify-content: center;
    align-items: center;
}