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

table {
    width: 100%;
    height: 100%;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 18px;
    font-weight: bold;
    background-color: rgb(255, 255, 255);
    table-layout: fixed;
    position: relative;
    z-index: 1;
}

td {
    width: 60px;
    min-width: 60px;
    max-width: 60px;
    height: 60px;
    font-weight: bold;
    color: rgb(0, 0, 0);
    vertical-align: middle;
    text-align: center;
    font-size: 18px;
    overflow: hidden;
}

#main-div {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    z-index: -9999;
}

td:hover {
    transition: all 0.5s;
    transform: scale(1.2);
}

#detailDiv {
    display: flex;
    height: 100%;
    justify-content: center;
    align-items: center;
    text-align: center;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 32px;
    font-weight: bold;
}

/* Colors */
.alkali-metal { 
    background-color: #FF6F61; /* Red-Orange */
}

.alkaline-earth-metal { 
    background-color: #FFD966; /* Yellow */
}

.transition-metal { 
    background-color: #40C4FF; /* Bright Blue */
}

.post-transition-metal { 
    background-color: #A1887F; /* Taupe */
}

.metalloid { 
    background-color: #7E57C2; /* Purple */
}

.nonmetal { 
    background-color: #66BB6A; /* Green */
}

.halogen { 
    background-color: #FFB300; /* Orange */
}

.noble-gas { 
    background-color: #BA68C8; /* Lavender */
}

.undefined { 
    background-color: #B0BEC5; /* Gray */
}

.lanthanides { 
    background-color: #F06292; /* Pink */
}

.actinides { 
    background-color: #00897B; /* Teal */
}

.alkali-metal,
.alkaline-earth-metal,
.transition-metal,
.post-transition-metal,
.metalloid,
.nonmetal,
.halogen,
.noble-gas,
.undefined,
.lanthanides,
.actinides {
    border: 1px solid #000;
}

#legend {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 18px;
    margin: 32px 0 16px 0;
    font-size: 18px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 16px;
    color: #fff;
    font-weight: bold;
    margin: 4px;
    border: 2px solid #222;
    box-shadow: 1px 1px 4px #0002;
    font-size: 16px;
}

.legend-item.alkali-metal { background-color: #FF6F61; }
.legend-item.alkaline-earth-metal { background-color: #FFD966; color: #222; }
.legend-item.transition-metal { background-color: #40C4FF; color: #222; }
.legend-item.post-transition-metal { background-color: #A1887F; }
.legend-item.metalloid { background-color: #7E57C2; }
.legend-item.nonmetal { background-color: #66BB6A; }
.legend-item.halogen { background-color: #FFB300; color: #222; }
.legend-item.noble-gas { background-color: #BA68C8; }
.legend-item.lanthanides { background-color: #F06292; }
.legend-item.actinides { background-color: #00897B; }
.legend-item.undefined { background-color: #B0BEC5; color: #222; }