@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500;600&display=swap');

:root {
  --blue: #3579F7;
  --blueshadow: rgba(0, 122, 255, 0.2);

  --darkgray: #aaaaaaa5;
  --bordergray: rgba(220, 220, 220, 0.5);

  --white: white;
  --textwhite: white;
  --lightwhite: rgb(250, 250, 250);

  --black: black;
  --textblack: black;
  --lightblack: rgb(10, 10, 10);
}


body {
  margin: 0;
  padding: 0;
  color: var(--textblack);
  background-color: var(--lightwhite);
  font-family: 'Open Sans', sans-serif;
}

header {
  display: flex;
  padding: 15px 30px;
  align-items: center;
  justify-content: space-between;
  background-color: var(--lightwhite);
  border-bottom: 2px solid var(--bordergray);
}

.title h1 {
  margin: 0;
  color: var(--textblack);
}

.buttons {
  display: flex;
  padding: 8px 10px 0px;
}

a,
h1 {
  transition: 0.2s;
  text-decoration: none;
}

#mobileBr {
  display: none;
}

button {
  border: none;
  cursor: pointer;
  font-size: 15px;
  padding: 7px 10px;
  color: var(--textblack);
  background-color: transparent;
  transition: background-color 0.1s, transform 0.2s;
}

h1:hover,
.buttons button:hover {
  color: var(--blue);
  transform: translateY(-2px);
}

.buttons button:active,
button:active {
  transition: 0.2s;
  color: var(--blue);
  transform: translateY(2px);
  border-top: solid 2px var(--blue);
}

.buttons button.active {
  color: var(--blue);
  border-bottom: solid 2px var(--blue);
}

h1:active {
  transform: translateY(2px);
}

.grid-container {
  gap: 11px;
  display: flex;
  flex-direction: column;
}

.top-row,
.bottom-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.grid-item {
  height: 60px;
  width: 180px;
  font-size: 16px;
  cursor: pointer;
  border-radius: 12px;
  color: var(--blue);
  border: 2px solid var(--blue);
  background-color: transparent;
  transition: background-color 0.3s ease;
}

.grid-item:hover {
  color: var(--textwhite);
  background-color: var(--blue);
}

#body {
  width: 40%;
  height: 110px;
  margin: auto;
  transition: 0.2s;
  margin-top: 80px;
  text-align: center;
  border-radius: 12px;
  padding: 30px 40px 30px;
  background-color: var(--white);
  border: 2px solid var(--bordergray);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.content {
  display: flex;
  padding: 30px 0;
  align-items: center;
  justify-content: space-between;
}

input,
select {
  width: 45%;
  padding: 10px;
  font-size: 15px;
  appearance: none;
  transition: 0.2s;
  border-radius: 12px;
  -moz-appearance: none;
  -webkit-appearance: none;
  border: 2px solid var(--bordergray);
  background-color: var(--lightwhite);
}

input:hover,
select:hover {
  border-color: var(--darkgray);
}

input:focus,
select:focus {
  border: 1px solid var(--blue);
  box-shadow: 0 0 0 2px var(--blueshadow);
}

svg {
  color: var(--textblack);
}

#result {
  opacity: 0;
  padding: 11px;
  font-size: 16px;
  margin-top: 8px;
  transition: 0.4s;
  border-radius: 12px;
  background-color: var(--lightwhite);
  color: var(--textblack);
  border: 2px solid var(--bordergray);
}

hr {
  width: 95%;
  line-break: normal;
  border: solid 1px var(--bordergray);
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bordergray: rgba(75, 75, 75, 0.5);
    --blueshadow: rgba(78, 138, 203, 0.2);
  }

  body,
  input,
  select,
  header,
  #result {
    color: var(--textwhite);
    background-color: var(--lightblack);
  }

  #body {
    background-color: var(--textblack);
  }

  .title h1,
  button,
  svg {
    color: var(--textwhite);
  }
}

/* Mobile Scaling */
@media (max-width: 768px) {
  header {
    padding: 20px;
    flex-direction: column;
    align-items: flex-start;
  }

  .title h1 {
    font-size: 1.5rem;
  }

  #body {
    width: 80%;
    box-shadow: none;
    margin-top: 30px;
  }

  #result {
    margin-top: 0px;
  }

  .buttons {
    gap: 5px;
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .grid-item {
    height: 40px;
    width: 110px;
    font-size: 16px;
  }
}