.mmr-calculator-container{max-width:500px;margin:20px
auto;padding:30px;background-color:#121212;border-radius:12px;box-shadow:0 6px 12px rgba(255, 255, 255, 0.1);font-family:'Arial',sans-serif;transition:all 0.3s ease;color:#fff}.mmr-calculator-container:hover{box-shadow:0 8px 16px rgba(255, 255, 255, 0.2)}.mmr-calculator-container
h2{text-align:center;color:#fff;margin-bottom:30px;font-size:28px;font-weight:bold;border-bottom:2px solid #3498db;padding-bottom:10px;display:inline-block}.form-group{margin-bottom:25px}.form-group
label{display:block;margin-bottom:10px;font-weight:700;color:#fff;font-size:17px}.form-group select,
.form-group input[type="number"]{width:calc(100% - 24px);padding:14px;border:2px
solid #333;border-radius:8px;font-size:17px;transition:border-color 0.3s ease;color:#fff;background-color:#333}.form-group select:focus,
.form-group input[type="number"]:focus{outline:none;border-color:#3498db;box-shadow:0 0 5px rgba(52, 152, 219, 0.5)}.form-group input[type="submit"]{background-color:#3498db;color:white;padding:14px
25px;border:none;border-radius:8px;cursor:pointer;font-size:19px;font-weight:bold;transition:background-color 0.3s ease, transform 0.2s ease;width:100%;box-shadow:0 2px 4px rgba(0, 0, 0, 0.2)}.form-group input[type="submit"]:hover{background-color:#2980b9;transform:translateY(-2px);box-shadow:0 4px 6px rgba(0, 0, 0, 0.2)}#mmr-result{margin-top:30px;padding:25px;background-color:#222;border-left:8px solid #3498db;border-radius:8px;font-size:17px;line-height:1.7;color:#fff;box-shadow:0 2px 4px rgba(0, 0, 0, 0.1)}#mmr-result
p{margin-bottom:10px}#mmr-result
strong{font-weight:700;color:#fff}@media (max-width: 600px){.mmr-calculator-container{padding:20px;margin:10px
auto}.mmr-calculator-container
h2{font-size:24px;margin-bottom:20px}.form-group
label{font-size:16px}.form-group select,
.form-group input[type="number"]{font-size:16px;padding:12px}.form-group input[type="submit"]{padding:12px
20px;font-size:17px}#mmr-result{padding:20px;font-size:16px}}