:root {
  --background-color: #352f44;
  --font-color: #faf0e6;
  --highlight-color: #f4a261;
  --title-font: "Monoton", sans-serif;
  --normal-font: "Outfit", sans-serif;

  --padding-xs: 12px;
  --padding-sm: 24px;
  --padding-md: 32px;
  --padding-lr: 64px;
}

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

body {
  background-color: var(--background-color);
  color: var(--font-color);
  font-family: var(--normal-font);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 100vh;
  padding: var(--padding-sm);
}

.title {
  padding: var(--padding-md);
  font-family: var(--title-font);
  font-size: clamp(2rem, 7vw, 4rem);
  text-align: center;
  word-break: break-word;
}

.message {
  padding: var(--padding-xs);
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  text-align: center;
  min-height: 2rem;
}

button {
  background: var(--font-color);
  border: none;
  border-radius: 8px;
  transition: background 0.2s ease;
}

button:hover {
  cursor: pointer;
  background: lightgrey;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  aspect-ratio: 1 / 1;
  width: min(90vw, 500px);
  gap: 0.5rem;
  margin: var(--padding-md) 0;
}

.cell {
  aspect-ratio: 1 / 1;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--font-color);
  border-radius: 8px;
  transition: background 0.2s ease;
  padding: 0;
  font-size: 4rem;
}

.cell:hover {
  background: #e0e0e0;
}

.mark {
  width: 70%;
  height: 70%;
  object-fit: contain;
}

.reset-btn {
  display: none;
  padding: 12px 32px;
  font-family: var(--normal-font);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--background-color);
  border-radius: 8px;
  background: var(--font-color);
  margin-bottom: var(--padding-md);
}

.reset-btn:hover {
  background: lightgrey;
}

.highlight {
  background-color: var(--highlight-color) !important;
  transition: background-color 0.3s ease;
}

@media (max-width: 480px) {
  .board {
    width: 90vw;
    gap: 0.4rem;
  }

  .message {
    font-size: 1rem;
  }

  .reset-btn {
    width: 80%;
  }
}

@media (max-width: 768px) {
  .board {
    width: 80vw;
    gap: 0.5rem;
  }
}

@media (min-width: 1024px) {
  .board {
    width: 450px;
  }

  .message {
    font-size: 1.4rem;
  }
}