@charset "utf-8";

/* 
Base style
*/
body {
    margin: 0;
    padding: 0;
    font-size: 15px;
    line-height: 1.5;
    color: #333;
    font-family: 'Noto Sans JP', system-ui, -apple-system,
                 BlinkMacSystemFont, 'Segoe UI',
                 'Hiragino Kaku Gothic ProN',
                 'Yu Gothic', Meiryo, sans-serif;
}

a {
    color: #333;
    text-decoration: none;
}

/*
hero
*/
.hero {
    width: 100%;
    height: 100vh;
    margin: auto;
    position: relative;
    overflow: hidden;
}

.video-container {
    position: absolute;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    z-index: 0;
}

.video-container>.isshoumono-museum-animation {
    position: absolute;
    left: 0;
    top: 33%;
    transform: translate(-5%, -69.5%) scale(1.001);
    width: 102vw;
    height: auto;
    object-fit: cover;
    z-index: 3;
    display: block;
    filter: drop-shadow(0px 0px #000);
}

.video-container>.glass-animation {
    display: none;
    position: absolute;
    top: -20vw;
    left: 90%;
    transform: translateX(-50%);
    width: 75vw;
    height: auto;
    object-fit: cover;
    object-position: center 10%;

    pointer-events: none;
    z-index: 1;
    filter: drop-shadow(0 0 0 #fff);
    aspect-ratio: auto 160 / 90;
}

h1 {
    font-size: 8vw;
    margin: 34.5vh auto auto 2vw;
    line-height: 10.5vw;
}
#hero-title {
    position: relative;
    z-index: 2;
}


#hero-link {
    display: flex;
    font-size: 3vw;
    font-weight: bold;
    margin: 1vw auto auto 2vw;
    align-items: center;
}
@media (max-width: 768px) {
    .video-container>.isshoumono-museum-animation {
        width: 119vw;
        transform: translate(-6%, -70%) scale(1.001);
    }
    h1 {
        font-size: 9.5vw;
        line-height: 11vw;
    }
}
@media (max-width: 450px) {
    .video-container>.isshoumono-museum-animation {
        width: 152vw;
        transform: translate(-6%, -69%) scale(1.001);
    }
    h1 {
        font-size: 12vw;
        line-height: 14vw;
    }
}

/* 
scroll 
*/
.scroll {
    height: 40vw;
    position: relative;
    display: flex;
    /* 中央寄せ用 */
    justify-content: center;
    /* 横方向中央 */
    align-items: center;
    /* 縦方向中央 */
}

#scroll-indicator {
    display: flex;
    flex-direction: row;
    align-items: center;
    /* 中央揃え */
    font-size: 1vw;
    letter-spacing: 0.3vw;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: Arial, sans-serif;
    color: #000;
    opacity: 0;
    animation: fadeInOut 1.7s ease-in-out infinite;
    /* 位置調整は flex でやるので absolute は不要 */
}

#scroll-indicator::after {
    content: "";
    display: block;
    width: 0.18vw;
    height: 2vw;
    /* ← ラインを長くした（調整可能） */
    margin-left: 0;
    background: #3e3e3e;
}
@media (max-width: 768px) {
    #scroll-indicator {
        font-size: 2vw;
    }
}
@media (max-width: 450px) {
    #scroll-indicator {
        font-size: 3vw;
    }
}

@keyframes fadeInOut {
    0% {
        opacity: 0;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0;
    }
}

/*
contents
*/
.contents {
    padding: 0 5vw 5vw 5vw;
}

.contents h2 {
    font-size: 4vw;
    border-top: 1px solid #111;
    padding-bottom: 0;
    margin-bottom: 3vw;
    font-weight: 400;
}

.contents-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.contents-item img {
    width: 25vw;
    height: auto;
}

.contents-info {
    margin-top: 10px;
    font-size: 1.2vw;
    line-height: 1.6;
}

.contents-info a {
    color: #111;
    text-decoration: none;
    font-size: 1.2vw;
    margin: 0;
}

.contents-info a:hover {
    text-decoration: underline;
}

.contact-btn {
    display: block;
    width: 11vw;
    height: 3.5vw;
    text-align: center;
    margin: 3vw 0 3vw auto;
    padding: 10px 20px;
    background: #111;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-size: 1vw;
    font-weight: lighter;
}

.contact-btn:hover {
    background: #333;
}
/* 768px以下なら2列に */
@media (max-width: 768px) {
    .contents h2 {
        font-size: 8vw;
    }
    .contents-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    .contents-item {
        margin: auto;
    }
    .contents-item img {
        width: 67vw;
    }
    .contents-info>p {
        font-size: 3vw;
    }
    .contents-info a {
        font-size: 3vw;
    }
    .contact-btn {
        width: 25vw;
        height: 8vw;
        font-size: 3vw;
    }
}
@media (max-width: 450px) {
    .contents h2 {
        font-size: 8vw;
    }
    .contents-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    .contents-item {
        margin: auto;
    }
    .contents-item img {
        width: 67vw;
    }
    .contents-info>p {
        font-size: 3vw;
    }
    .contents-info a {
        font-size: 3vw;
    }
    .contact-btn {
        width: 30vw;
        height: 10vw;
        font-size: 3vw;
    }
}

/* fade-in base */
.fade-in {
    opacity: 0;
    transition: opacity 0.8s ease;
    transition-delay: 0.3s;
}

/* visible state */
.fade-in.is-visible {
    opacity: 1;
}