:root { --bg-color: #0b0b0b; --accent-color: #ffffff; --menu-bg: #161616; --menu-width: 280px; --transition-speed: 0.6s cubic-bezier(0.25, 1, 0.5, 1); }
        body { margin: 0; padding: 0; background-color: #000; color: var(--accent-color); font-family: "Helvetica Neue", Arial, "Hiragino Sans", sans-serif; overflow-x: hidden; }

        /* --- UI Components --- */
        #wrapper { transition: transform var(--transition-speed), filter var(--transition-speed), border-radius var(--transition-speed); width: 100%; min-height: 100vh; position: relative; background-color: var(--bg-color); z-index: 1; transform-origin: left center; }
        body.menu-open #wrapper { transform: translateX(100px) scale(0.95); filter: brightness(0.5); border-radius: 20px; pointer-events: none; }
        .page-title { text-align: center; padding-top: 100px; font-size: 1.2rem; font-weight: 200; letter-spacing: 0.5em; color: #fff; margin-bottom: 50px; }

        /* --- Masonry Grid (敷き詰めレイアウト) --- */
        .grid-container { 
            column-count: 2; /* 2列にする */
            column-gap: 30px; /* 列間の隙間 */
            padding: 0 50px 100px 50px; 
            max-width: 1400px; 
            margin: 0 auto; 
        }
        .grid-item { 
            break-inside: avoid; /* 途中で改行されないようにする */
            margin-bottom: 30px; /* 下方向の隙間 */
            position: relative; 
            padding: 15px; 
            background: transparent; 
            border: 1px solid transparent; 
            border-radius: 2px; 
            cursor: pointer; 
            transition: all 0.6s ease; 
        }
        .grid-item:hover { border: 1px solid rgba(255, 255, 255, 0.08); background: rgba(255, 255, 255, 0.015); box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5); transform: translateY(-5px); }
        .grid-img-wrap { width: 100%; height: auto; overflow: hidden; background: #000; }
        .grid-item img { width: 100%; height: auto; display: block; filter: grayscale(20%); transition: 1.2s cubic-bezier(0.2, 1, 0.2, 1); }
        .grid-item:hover img { filter: grayscale(0%) brightness(1.05); transform: scale(1.02); }

        /* --- EXIF Styles --- */
        .exif-footer, .grid-exif {
            margin-top: 20px;
            opacity: 0;
            transition: 0.5s ease;
            text-align: left;
        }
        .photo-section:hover .exif-footer,
        .grid-item:hover .grid-exif {
            opacity: 0.8;
        }
        .camera-model {
            display: block;
            font-size: 0.8rem;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            margin-bottom: 5px;
            color: #fff;
        }
        .lens-model {
            display: block;
            font-size: 0.7rem;
            color: #888;
            margin-bottom: 5px;
            letter-spacing: 0.1em;
        }
        .exif-data {
            font-size: 0.7rem;
            font-family: 'Courier New', monospace;
            color: #aaa;
            letter-spacing: 0.1em;
        }



.profile-btn-wrap { text-align: center; margin: 100px 0 150px; }
.profile-link { display: inline-block; padding: 18px 60px; color: #fff; text-decoration: none; font-size: 0.8rem; letter-spacing: 0.3em; border: 1px solid rgba(255,255,255,0.1); background: rgba(255,255,255,0.02); transition: 0.6s; }
        @media (max-width: 768px) {
            .grid-container { column-count: 1; padding: 0 15px 50px 15px; }
            .grid-item { padding: 10px; margin-bottom: 20px; }
            body.menu-open #wrapper { transform: translateX(100px) scale(0.9); }
        }