* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  color: white;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}

body {
  background-color: rgb(48, 46, 46);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 0.5rem;
}

#main-div {
  width: 80vw;
  max-width: 350px;
  min-width: 250px;
  height: auto;
  margin: 2vh auto;
  border-radius: 0.7rem;
  background-color: black;
  padding: 0.8rem;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3); /* Add subtle shadow for depth */
}

#display-div {
  height: 3rem;
  border-bottom: 2px solid #fff;
  display: flex;
  justify-content: right;
  align-items: center;
  padding: 0.6rem;
  font-size: 1.2rem;
  overflow-x: auto;
  white-space: nowrap;
  background-color: #222; /* Darker background for contrast */
}

#main-homebar-div {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.6rem;
}

#whole-digits-div {
  width: 60%;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
  margin-top: 0.6rem;
}

#whole-digits-div .digits-div {
  height: 2.5rem;
  width: 30%;
  min-width: 40px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgb(70, 70, 70);
  cursor: pointer;
  border-radius: 0.5rem;
  font-weight: 500;
  font-size: 1rem;
  transition: background-color 0.2s;
}

#whole-digits-div .digits-div:hover {
  background-color: rgb(226, 126, 43);
}

#operator-div {
  width: 35%;
}

#whole-operators-div {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.6rem;
}

#whole-operators-div button {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgb(255, 126, 5);
  height: 2.8rem; /* Increased from 2.5rem for better visibility */
  width: 45%;
  min-width: 40px;
  border-radius: 0.5rem;
  font-size: 1.1rem; /* Increased from 0.9rem for clarity */
  font-weight: 600; /* Bolder text for symbols */
  cursor: pointer;
  border: none;
  padding: 0.2rem; /* Added padding for better touch area */
  transition: transform 0.1s, opacity 0.2s;
}

#whole-operators-div button:hover {
  opacity: 0.7;
  transform: scale(1.05); /* Slight scale on hover for feedback */
}

#name_div {
  display: flex;
  justify-content: center;
  font-size: 0.9rem;
  margin: 0.6rem auto;
  text-decoration: underline;
}

#calc_name_para:hover {
  color: yellow;
}

#name_div:hover {
  color: yellow;
}

#calc_name_para {
  font-family: cursive;
}

/* Extra small screens (below 360px) */
@media (max-width: 360px) {
  #main-div {
    width: 90vw;
    padding: 0.4rem;
  }
#calc_name_para{
  font-size: 2rem;
}
  
  #display-div {
    height: 2.2rem;
    font-size: 0.8rem;
    padding: 0.3rem;
  }

  #whole-digits-div {
    width: 100%;
  }

  #whole-digits-div .digits-div {
    height: 2rem;
    width: 30%;
    font-size: 0.7rem;
  }

  #operator-div {
    width: 100%;
  }

  #whole-operators-div button {
    height: 2.2rem;
    width: 45%;
    font-size: 0.9rem;
  }

  #name_div {
    font-size: 0.6rem;
    margin: 0.3rem;
  }
}

/* Small screens (361px to 480px) */
@media (min-width: 361px) and (max-width: 480px) {
  #main-div {
    width: 85vw;
    padding: 0.5rem;
  }

  #display-div {
    height: 2.5rem;
    font-size: 0.9rem;
    padding: 0.4rem;
  }

  #whole-digits-div {
    width: 60%;
  }

  #whole-digits-div .digits-div {
    height: 2.2rem;
    font-size: 0.8rem;
  }

  #operator-div {
    width: 35%;
  }
  #calc_name_para{
  font-size: 2rem;
}

  #whole-operators-div button {
    height: 2.5rem;
    font-size: 1rem;
  }

  #name_div {
    font-size: 0.7rem;
  }
}

/* Tablet screens (481px to 768px) */
@media (min-width: 481px) and (max-width: 768px) {
  #main-div {
    width: 80vw;
    max-width: 320px;
    padding: 0.6rem;
  }
  #calc_name_para{
  font-size: 2rem;
}

  #display-div {
    height: 2.8rem;
    font-size: 1rem;
  }

  #whole-digits-div {
    width: 60%;
  }

  #whole-digits-div .digits-div {
    height: 2.4rem;
    font-size: 0.9rem;
  }

  #whole-operators-div button {
    height: 2.7rem;
    font-size: 1.1rem;
  }

  #name_div {
    font-size: 0.8rem;
  }
}

/* Desktop screens (769px to 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
  #main-div {
    width: 75vw;
    max-width: 350px;
  }
  
#calc_name_para{
  font-size: 2rem;
}
  #display-div {
    font-size: 1.1rem;
  }

  #whole-digits-div .digits-div {
    height: 2.5rem;
    font-size: 1rem;
  }

  #whole-operators-div button {
    height: 2.8rem;
    font-size: 1.2rem;
  }
}

/* Large screens (above 1024px) */
@media (min-width: 1025px) {
  #main-div {
    width: 70vw;
    max-width: 350px;
  }

  #display-div {
    font-size: 1.2rem;
    height: 3.2rem;
  }

  #whole-digits-div .digits-div {
    height: 2.6rem;
    font-size: 1.1rem;
  }

  #whole-operators-div button {
    height: 2.9rem;
    font-size: 1.3rem;
  }

  #name_div {
    font-size: 0.9rem;
  }
}
#calc_name_para{
  font-size: 2rem;
}