* {
    margin: 0;
    padding: 0;
}

body {
  min-height: 100vh;
  text-align: center;
  background: radial-gradient(circle at center, #3f3d56 0%, #2c2a40 60%, #1a1926 100%);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#mode-screen {
    height: 100vh;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    align-items: center;
    color: white;
}

#mode-screen h1 {
    font-size: 4rem;  
    margin-top: -40px;   
}


#mode-screen button {
    padding: 1rem 1.5rem;
    font-size: 1.2rem;
    border: none;
    border-radius: 0.8rem;
    background-color: #C42021;
    color: white;
    cursor: pointer;
}


.container {
    height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.game {
    height: 60vmin;
    width: 60vmin;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 1.5vmin;
}

.box {
    height: 18vmin;
    width: 18vmin;
    border: none;
    border-radius: 1rem;
    background-color: #F3FFB9;
    color: #561643;
    font-size: 8vmin;
    cursor: pointer;
    box-shadow: 0 0 1rem rgba(0,0,0,0.5);
    transition: box-shadow 0.3s ease, transform 0.2s ease;
}

.box:active {
    transform: scale(0.95);
}

.box.x {
    color: #ff4d6d;
    box-shadow: 0 0 10px #ff4d6d,
                0 0 20px #ff4d6d,
                0 0 40px #ff4d6d;
}

.box.o {
    color: #4dd0e1;
    box-shadow: 0 0 10px #4dd0e1,
                0 0 20px #4dd0e1,
                0 0 40px #4dd0e1;
}

#reset-btn {
    padding: 1rem;
    font-size: 1.25rem;
    background-color: #C42021;
    color: #fff;
    border: none;
    border-radius: 1rem;
    cursor: pointer;
}

#new-btn {
    padding: 1rem;
    font-size: 1.25rem;
    background-color: #C42021;
    color: #fff;
    border: none;
    border-radius: 1rem;
    cursor: pointer;
}

#msg {
    color: #ffffc7;
    font-size: 5vmin;
}

.msg-container {
    height: 100vmin;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4rem;
}

.hide {
    display: none;
}