*{
            padding: 0;
            margin: 0;
            font-family: "Poppins", sans-serif;
            box-sizing: border-box;
        }
        .container{
            width: 100%;
            min-height: 100vh;
            background: linear-gradient(135deg, #4203a9, #90bafc);
            color: #fff;
            padding: 10px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .calculator{
            width: 100%;
            max-width: 600px;
            margin: 0 auto;
            margin-top: 5vh;
        }
        .calculator h1{
            text-align: center;
            font-size: 42px;
            max-font-size: 60px;
        }
        .calculator h1 span{
            color: #ffff76;
        }
        .input-box{
            margin: 40px 0;
            padding: 35px;
            border-radius: 10px;
            background: rgba(255,255,255,0.3);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .input-box input{
            flex: 1 1 180px;
            min-width: 0;
            margin-right: 20px;
            padding: 14px 20px;
            border: 0;
            outline: 0;
            font-size: 18px;
            border-radius: 5px;
            position: relative;
        }
        .input-box button{
            background: #ffff76;
            border: 0;
            outline: 0;
            padding: 15px 30px;
            border-radius: 5px;
            font-weight: 500;
            color: #333;
            cursor: pointer;
            font-size: 16px;
        }
        .input-box input::-webkit-calendar-picker-indicator{
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            width: auto;
            height: auto;
            position: absolute;
            background-position: calc(100% - 10px);
            background-size: 30px;
            cursor: pointer;
        }
        #result{
          font-size: 20px;
        }
        #result span{
            color: #ffff76;
        }

        /* Responsive styles */
        @media (max-width: 600px) {
            .calculator{
                max-width: 95vw;
                margin-top: 8vw;
            }
            .calculator h1{
                font-size: 9vw;
            }
            .input-box input,
            .input-box button{
                width: 100%;
                margin-right: 0;
                font-size: 16px;
                padding: 12px 10px;
            }
            #result{
                font-size: 16px;
            }
        }