/* === Basic Styling === */
body {
    text-align: center;
    background: #e8e6e8;
    background: radial-gradient(circle, rgba(232, 230, 232, 1) 0%, rgba(108, 153, 204, 1) 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    color: white;
    margin: 0;
    padding: 20px;
    font-family: 'Poppins', sans-serif;
    overflow-x: hidden;
    padding: 0;
}

/* === Heading Styling === */
h1, h2, h3 {
    margin: 10px 0;
    font-weight: 600;
    transition: all 0.3s ease;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);

}

/* === Game Buttons === */
.btn {
    width: 40vw;    
    height: 40vw;
    max-width: 200px;
    max-height: 200px;
    border-radius: 20%;
    border: 10px solid #000;
    margin: 0.5rem;
    transition: all 0.2s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.btn:hover {
    filter: brightness(1.2);
    cursor: pointer;
}

.btn-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
}

/* === Button Colors === */
.yellow {
    background-color: #FFBF00;
}
.red {
    background-color: #DC143C;
}
.green {
    background-color: #90EE90;
}
.purple {
    background-color: #D8BFD8;
}

/* === Flash Animations === */
.flash {
    opacity: 0.5;
    transform: scale(1.1);
    background-color: white;
}

.userFlash {
    transform: scale(0.9);
    background: radial-gradient(circle, rgba(42,123,155,1) 0%, rgba(87,199,133,1) 50%, rgba(237,221,83,1) 100%);
    transition: all 0.2s ease;
}

/* === Game Over Animation === */
body.game-over {
    background: linear-gradient(to right, #ff416c, #ff4b2b);
}

#start-btn {
    padding: 10px 20px;
    font-size: 1.2rem;
    margin: 1rem;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 10px;
    transition: background-color 0.3s ease;
}

#start-btn:hover {
    background-color: #45a049;
}

/* === Responsive Text Size === */
@media (max-width: 600px) {
    h1 {
        font-size: 1.5rem;
    }
    h2 {
        font-size: 1rem;
    }
}