@charset "UTF-8";

/* --- Base Setup --- */
:root {
    --bg-color: #0a0a0a;
    --text-main: #e5e5e5;
    --text-sub: #a0a0a0;
    --accent: #ffffff;
    --font-jp: 'Shippori Mincho', serif;
    --font-en: 'Cormorant Garamond', serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-jp);
    overflow-x: hidden;
    width: 100%;
}

/* --- Loader & Header --- */
.loader {
    position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
    background-color: #000; z-index: 9999;
    display: flex; justify-content: center; align-items: center;
}
.loader-logo {
    font-family: var(--font-en); font-size: 2rem; letter-spacing: 0.2em; opacity: 0; color: var(--text-main);
}
.header {
    position: fixed; top: 0; left: 0; width: 100%; padding: 2rem;
    display: flex; justify-content: space-between; align-items: center;
    z-index: 100; mix-blend-mode: difference;
}
.logo { font-family: var(--font-en); font-size: 1.5rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; }
.menu-trigger { cursor: pointer; width: 40px; height: 20px; position: relative; }
.menu-trigger span { display: block; position: absolute; height: 1px; width: 100%; background: #fff; transition: 0.3s; }
.menu-trigger span:nth-child(1) { top: 0; }
.menu-trigger span:nth-child(2) { bottom: 0; width: 70%; right: 0; }

/* --- Hero Section --- */
.hero { position: relative; width: 100%; height: 100vh; overflow: hidden; }
.hero-img-wrapper { position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 1; }
.hero-img {
    width: 100%; height: 100%; object-fit: cover;
    opacity: 0.8; filter: brightness(0.6) contrast(1.1);
    transform-origin: center center;
    animation: zoomEffect 20s linear infinite alternate;
}
@keyframes zoomEffect { 0% { transform: scale(1); } 100% { transform: scale(1.15); } }
.hero-content { position: relative; z-index: 10; width: 100%; height: 100%; pointer-events: none; }
.copy-jp {
    position: absolute; top: 25%; right: 15%; writing-mode: vertical-rl;
    font-size: clamp(1.5rem, 4vw, 3rem); font-weight: 500; letter-spacing: 0.3em; line-height: 2; opacity: 0;
}
.copy-en {
    position: absolute; bottom: 15%; left: 10%; font-family: var(--font-en);
    font-size: clamp(2rem, 5vw, 5rem); font-style: italic; font-weight: 300; line-height: 1.1; opacity: 0;
}
.copy-en span { display: block; margin-bottom: 0.5rem; font-size: 1rem; font-style: normal; letter-spacing: 0.1em; font-family: sans-serif; color: var(--text-sub); text-transform: uppercase; }
.deco-line { position: absolute; left: 10%; bottom: 12%; width: 0; height: 1px; background-color: var(--text-sub); z-index: 10; }

/* --- Concept Section --- */
.concept {
    position: relative; width: 100%; min-height: 120vh; padding: 15vh 5vw;
    background-color: var(--bg-color); overflow: hidden;
}
.concept-container { position: relative; width: 100%; max-width: 1200px; margin: 0 auto; height: 100%; }
.concept-title-vert {
    position: absolute; top: 0; left: 0; writing-mode: vertical-rl;
    font-size: 1.2rem; letter-spacing: 0.5em; color: var(--text-sub); z-index: 5;
}
.concept-img-main {
    position: absolute; top: 50px; left: 15%; width: 45vw; max-width: 500px; aspect-ratio: 3/4; z-index: 1; overflow: hidden;
}
.concept-img-sub {
    position: absolute; top: 400px; right: 5%; width: 30vw; max-width: 350px; aspect-ratio: 1/1; z-index: 3; overflow: hidden;
}
.concept-img-main img, .concept-img-sub img {
    width: 100%; height: 100%; object-fit: cover; filter: grayscale(100%) contrast(1.2);
}
.concept-desc {
    position: absolute; top: 200px; right: 15%; width: 40vw; max-width: 400px; z-index: 4;
    color: var(--text-main); text-shadow: 0 0 20px rgba(0,0,0,0.8);
}
.concept-head { font-family: var(--font-en); font-size: 3rem; font-style: italic; margin-bottom: 2rem; font-weight: 300; }
.concept-body { font-size: 1rem; line-height: 2.2; letter-spacing: 0.1em; }
.reveal-wrapper { overflow: hidden; display: block; }
.reveal-inner { display: block; transform: translateY(110%); }

/* --- Gallery Section (Vertical Grid 2cols x 5rows) --- */
.gallery-section {
    position: relative;
    width: 100%;
    padding: 15vh 5vw;
    background-color: var(--bg-color);
}

.gallery-header {
    text-align: center;
    margin-bottom: 6rem;
    font-family: var(--font-en);
}
.gallery-title { font-size: 3rem; font-weight: 300; letter-spacing: 0.1em; margin-bottom: 1rem; }
.gallery-subtitle { color: var(--text-sub); font-size: 1rem; letter-spacing: 0.2em; text-transform: uppercase; }

/* Grid Container */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); /* 2列固定 */
    column-gap: 5vw;
    row-gap: 8vh;
    max-width: 1200px;
    margin: 0 auto;
}

/* Individual Items */
.gallery-item {
    position: relative;
    width: 100%;
    opacity: 0; /* JS Fade in */
    transform: translateY(50px);
}

/* 右列を下にずらしてリズムを作る */
.gallery-item.push-down {
    margin-top: 8rem;
}

.gallery-img {
    width: 100%;
    aspect-ratio: 4 / 3; /* 画像比率を統一 */
    overflow: hidden;
    margin-bottom: 1rem;
    background-color: #1a1a1a; /* 読み込み中の背景色 */
}

.gallery-img img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s ease; filter: grayscale(30%);
}

.gallery-item:hover .gallery-img img { transform: scale(1.05); filter: grayscale(0%); }

.gallery-caption {
    display: flex; align-items: baseline; font-family: var(--font-en); color: var(--text-main);
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.gallery-caption .num { font-size: 0.9rem; color: var(--text-sub); margin-right: 0.8rem; font-weight: 300; }
.gallery-caption .name { font-size: 1.2rem; font-style: italic; letter-spacing: 0.05em; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr; /* スマホでは1列 */
        row-gap: 4rem;
    }
    .gallery-item.push-down {
        margin-top: 0;
    }
    .copy-jp { right: 10%; top: 20%; font-size: 1.5rem; }
    .copy-en { bottom: 10%; font-size: 2.5rem; }
    .concept-container { display: flex; flex-direction: column; }
    .concept-img-sub { display: none; }
    .concept-desc { position: static; width: 100%; padding: 0 1rem; }
}