.date-calculator-container{background-color:#f3f3f3;border-radius:12px;margin:0 auto;max-width:700px;padding:40px;text-align:center}.input-group{margin-bottom:25px}.calc-options{font-weight:600;margin-bottom:20px}.theme-styled-input{border:1px solid #ccc;border-radius:4px;display:block;font-size:16px;margin:10px 0 20px;padding:12px;width:100%}#calculate-btn{cursor:pointer;transition:opacity .2s ease}.future-date{font-weight:700;line-height:1.1;margin-top:5px}