:root {
  --bg-primary: #111;
  --bg-secondary: #222;
  --bg-tertiary: #333;
  --text-light: #fff;
  --text-dark: #000;
  --accent-orange: #ff7043;
  --accent-orange-dark: #ff5722;
  --accent-green: #64dd17;
  --accent-green-dark: #aeea00;
  --accent-blue: #00bcd4;
  --accent-blue-dark: #0097a7;
  --accent-pink: #e91e63;
}

* {
  box-sizing: border-box;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  outline: none;
}

::-webkit-scrollbar {
  display: none;
  background: transparent;
}

html {
  font-size: 1.5em;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  font-size: 2rem;
  padding: 0.1em;
  background-color: var(--bg-primary);
  font-family: Sans-Serif;
  margin: 0;
  height: 100vh;
  color: var(--text-light);
}

ol,
ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.SlidingPuzzleContainer {
  max-width: fit-content;
  max-height: fit-content;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-top: 1rem;
  /* Reduced margin-top */
}

.puzzleTitle {
  font-size: 5rem;
  color: var(--accent-pink);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  margin-bottom: 1rem;
  margin-top: 0rem;
}

.SlidingPuzzle {
  user-select: none;
  border-radius: 0.3rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, auto);
  gap: 0.2rem;
  background-color: var(--bg-secondary);
  padding: 1rem;
  border: 5px solid var(--bg-tertiary);
}

.Tile {
  background: var(--accent-orange);
  border: 0.3rem solid var(--accent-orange-dark);
  width: 5rem;
  height: 5rem;
  text-align: center;
  line-height: 5rem;
  font-size: 2rem;
  color: var(--text-light);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: transform 0.2s ease-in-out;
  margin: 0.4rem;
}

.Tile:hover {
  transform: scale(1.05);
}

.moves,
.timer {
  font-size: 1rem;
  margin: .6rem 0.5rem;
  background: var(--accent-green);
  padding: 0.6rem 1rem;
  color: var(--text-light);
  border-radius: 0.5rem;
  display: inline-block;
}

#movesnum {
  background: var(--text-light);
  padding: 0.2rem 0.5rem;
  color: var(--text-dark);
  border-radius: 0.3rem;
  font-weight: bold;
}

button {
  font-size: 1rem;
  margin: 0.5rem;
  padding: 0.6rem 1rem;
  color: var(--text-light);
  background: var(--accent-blue);
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background 0.2s ease-in-out;
}

button:hover {
  background: var(--accent-blue-dark);
}

#congratsFrame {
  display: none;
}

.congratsFrame {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
}

.congratsContent {
  background: var(--bg-secondary);
  padding: 2rem;
  border-radius: 0.5rem;
  text-align: center;
  color: var(--text-light);
}

.congratsContent h2 {
  margin-bottom: 1rem;
  font-size: 2rem;
}

.congratsContent p {
  margin-bottom: 1rem;
  font-size: 1.2rem;
}

.congratsContent button {
  font-size: 1.2rem;
  padding: 0.6rem 1.2rem;
  background: var(--accent-orange);
  border: none;
  color: var(--text-light);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background 0.2s ease-in-out;
}

.congratsContent button:hover {
  background: var(--accent-orange-dark);
}

footer {
  font-size: 0.7rem;
  margin-top: auto;
  margin-bottom: 10%;
  color: var(--text-light);
  text-align: center;
}

@media screen and (max-width: 370px) {
  * {

    box-sizing: border-box;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
    /* Remove blue highlight */
    outline: none;
    /* Remove blue focus ring */
  }

  body {
    height: 70vh;
    padding: 0;
    justify-content: flex-start;
    align-items: center;
  }

  .SlidingPuzzleContainer {
    width: 100%;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 1rem;
    margin-bottom: 2rem;
  }

  .puzzleTitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    margin-top: 0rem;
    text-align: center;
  }

  .SlidingPuzzle {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(6, auto);
    gap: 0.1rem;
    padding: 0.2rem;
    border: 3px solid var(--bg-tertiary);
    box-sizing: border-box;
    margin: 0 auto;
  }

  .Tile {
    width: 2rem;
    height: 2rem;
    line-height: 2rem;
    font-size: 0.5rem;
    margin: 0.1rem;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .controls {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 0.5rem;
  }

  .controls .newGameButton {
    margin-left: 0.5rem;
  }

  .moves,
  .timer,
  button {
    font-size: 0.5rem;
    padding: 0.2rem 0.4rem;
    margin: 0 0.6rem;
    width: fit-content;
    /* Adjusted margin */
  }

  #congratsFrame {
    justify-content: center;
    align-items: center;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }

  .congratsContent {
    background: var(--bg-secondary);
    padding: 0.5rem;
    /* Reduced padding */
    border-radius: 0.2rem;
    /* Reduced border radius */
    text-align: center;
    color: var(--text-light);
    /* Added border */
    max-width: calc(100% - 2rem);
    /* Adjusted max-width */
    overflow: hidden;
    /* Ensure text doesn't overflow */
  }

  .congratsContent h2 {
    margin-bottom: 0.3rem;
    /* Further reduced margin */
    font-size: 0.8rem;
    /* Reduced font size */
  }

  .congratsContent p {
    margin-bottom: 0.3rem;
    /* Further reduced margin */
    font-size: 0.6rem;
    /* Reduced font size */
  }

  .congratsContent button {
    font-size: 0.5rem;
    /* Further reduced font size */
    padding: 0.2rem 0.5rem;
    /* Further reduced padding */
    border-radius: 0.2rem;
    /* Reduced border radius */
    cursor: pointer;
  }

  #newgame {
    margin-left: 3.7rem;
    /* Adjusted margin */
  }

  footer {
    position: fixed;
    font-size: 0.4rem;
    position: fixed;
    width: 100%;
    bottom: 3%;
    display: flex;
    justify-content: center;
    align-items: center;
  }
}