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

body {
  background-color: rgb(21, 21, 21);
  color: beige;
}

#outer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin-top: 2rem;
}

#main-container {
  padding: 3rem 6rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#title,
#number,
#record-text,
#highest {
  font-size: 3rem;
  font-weight: 600;
  margin: 1rem 2rem;
  font-family: "Courier New", Courier, monospace;
}

#p {
  font-size: 1.8rem;
  font-family: "Courier New", Courier, monospace;
  padding: 3% 12%;
}

#grid {
  display: flex;
  flex-direction: row;
  cursor: pointer;
}

.grid-numbers {
  border: 1px solid black;
  background-color: rgb(215, 215, 215);
  color: rgb(70, 70, 70);
  padding: 0.5rem;
  height: 4rem;
  width: 4rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#random-number {
  background-color: rgb(0, 140, 255);
  padding: 0.5rem 1.25rem;
  border-radius: 5px;
}

#score,
#highest-score {
  border-radius: 5px;
  padding: 0.5rem 1.25rem;
}

#flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 0 15rem;
}

#text {
  padding: 0;
  margin: 0;
  margin-top: 2rem;
}

.color-black {
  color: rgb(233, 233, 233);
  font-weight: 500;
  font-family: "Franklin Gothic Medium", "Arial Narrow", Arial, sans-serif;
  font-size: 0.95rem;
  background-color: rgb(0, 140, 255);
  pointer-events: none;
}

button {
  border-radius: 6px;
  border: 1px solid;
  padding: 1rem 2rem;
  cursor: pointer;
  margin: auto 7rem;
  font-size: 1.5rem;
  font-weight: 600;
}

#result {
  color: rgb(197, 0, 0);
  font-size: 4.5rem;
  font-weight: 600;
  font-family: "Courier New", Courier, monospace;
}

.cursor {
  cursor: not-allowed;
}

/* Tablet breakpoint */
@media only screen and (max-width: 1279px) {
  #outer-container {
    margin-top: 1rem;
  }

  #title {
    font-size: 2.5rem;
    margin: 0.5rem 1rem;
  }

  #p {
    font-size: 1.5rem;
    padding: 2rem 3rem;
  }

  #main-container {
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    padding: 2rem 2rem;
  }

  #grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(4, auto);
    gap: 0.5rem;
    cursor: pointer;
    max-width: 100%;
  }

  #flex {
    padding: 0 3rem;
  }

  .grid-numbers {
    height: 4.5rem;
    width: 4.5rem;
    padding: 0.5rem;
    font-size: 1rem;
  }

  #text {
    margin-top: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    gap: 1rem;
  }

  #number,
  #highest,
  #record-text {
    font-size: 2rem;
    margin: 0;
    text-align: center;
    padding: 0.5rem 1.25rem;
  }

  #random-number {
    font-size: 1.5rem;
    padding: 0.4rem 1rem;
  }

  button {
    margin: 1rem 0 0 0;
    padding: 0.8rem 2rem;
    font-size: 1.2rem;
  }

  #result {
    font-size: 2rem;
  }
}

/* Mobile: 768px and below */
@media only screen and (max-width: 768px) {
  #outer-container {
    margin-top: 1rem;
  }

  #title,
  #result {
    font-size: 2rem;
    margin: 0.5rem 1rem;
  }

  #p {
    font-size: 1.2rem;
    padding: 1.5rem 2rem;
  }

  #main-container {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 1rem;
  }

  #grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(4, auto);
    gap: 0.4rem;
    max-width: 100%;
  }

  #flex {
    flex-direction: column;
    gap: 0.5rem;
    padding: 0 1rem;
  }

  .grid-numbers {
    height: 3.5rem;
    width: 3.5rem;
    padding: 0.3rem;
    font-size: 0.9rem;
  }

  #text {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    gap: 1rem;
  }

  #number,
  #highest,
  #record-text {
    font-size: 1.5rem;
    margin: 0;
    text-align: center;
    padding: 0.5rem 1rem;
  }

  #random-number {
    font-size: 1.3rem;
    padding: 0.3rem 0.8rem;
  }

  button {
    margin: 1rem 0 0 0;
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
  }
}

/* Small mobile: 480px and below */
@media only screen and (max-width: 480px) {
  #title {
    font-size: 1.5rem;
    margin: 0.5rem 0.5rem;
  }

  #p {
    font-size: 1rem;
    padding: 1rem 1rem;
  }

  #main-container {
    gap: 1.5rem;
    padding: 1rem 0.5rem;
  }

  #grid {
    grid-template-columns: repeat(5, 1fr);
    grid-template-rows: repeat(4, auto);
    gap: 0.3rem;
  }

  #flex {
    flex-direction: column;
    gap: 0.5rem;
    padding: 0 0.5rem;
  }

  .grid-numbers {
    height: 3rem;
    width: 3rem;
    font-size: 0.8rem;
  }

  #number,
  #highest,
  #record-text {
    font-size: 1.2rem;
    padding: 0.4rem 0.8rem;
  }

  #random-number {
    font-size: 1.1rem;
    padding: 0.3rem 0.7rem;
  }

  button {
    padding: 0.7rem 1.5rem;
    font-size: 1rem;
    margin: 0.5rem 0 0 0;
  }

  #result {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    font-weight: 700;
  }
}

/* Extra small mobile: 360px and below */
@media only screen and (max-width: 360px) {
  #title {
    font-size: 1.3rem;
  }

  #p {
    font-size: 0.9rem;
    padding: 0.8rem 0.8rem;
  }

  .grid-numbers {
    height: 2.5rem;
    width: 2.5rem;
    font-size: 0.75rem;
  }

  #number,
  #highest,
  #record-text {
    font-size: 1rem;
  }

  #random-number {
    font-size: 1rem;
  }

  button {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
  }

  #result {
    font-size: 1.2rem;
  }
}