body {
    background-color: #0f172a; /* Slate 900 */
    color: #e2e8f0;
    font-family: 'Lato', sans-serif;
    cursor: crosshair;
}
h1, h2, h3 {
    font-family: 'Cinzel', serif;
}

/* 標本箱のグリッド */
.specimen-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1px;
    background-color: #334155; /* 枠線の色 */
    padding: 1px;
    border: 10px solid #1e293b;
    box-shadow: inset 0 0 50px rgba(0,0,0,0.8);
}

.specimen-cell {
    background-color: #0f172a;
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    group: group;
}

/* ルーペ効果（マスク） */
.loupe-mask {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle 100px at var(--x, 50%) var(--y, 50%), transparent 0%, rgba(0,0,0,0.8) 100%);
    pointer-events: none;
    z-index: 10;
    transition: opacity 0.3s;
    opacity: 0;
}
.specimen-cell:hover .loupe-mask {
    opacity: 1;
}

/* 画像のキラキラ反射（Specular） */
.specular-shine {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle 50px at var(--x, 50%) var(--y, 50%), rgba(255,255,255,0.3) 0%, transparent 60%);
    mix-blend-mode: overlay;
    pointer-events: none;
    z-index: 5;
}

.label-plate {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: #e2e8f0;
    color: #0f172a;
    padding: 4px 12px;
    font-size: 0.7rem;
    font-family: 'Cinzel', serif;
    letter-spacing: 0.1em;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    border: 1px solid #94a3b8;
    z-index: 20;
}