body {
    background: linear-gradient(270deg, #667eea, #764ba2, #667eea);
    background-size: 600% 600%;
    animation: gradientBG 15s ease infinite;
    color: #fff;
}

@keyframes gradientBG {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

#word-box {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

#options button {
    font-size: 1.1rem;
}

#game-area {
    display: none;
}

.flash-correct {
    animation: flashGreen 0.5s;
}

.flash-wrong {
    animation: flashRed 0.5s;
}

@keyframes flashGreen {
    0% {
        background-color: #28a745
    }

    100% {
        background-color: transparent
    }
}

@keyframes flashRed {
    0% {
        background-color: #dc3545
    }

    100% {
        background-color: transparent
    }
}

.progress {
    height: 20px;
}

.cursor-pointer {
    cursor: pointer;
}

@media (max-width:768px) {
    #word-box {
        font-size: 1.8rem;
    }

    #options button {
        font-size: 1rem;
    }

    .d-flex>.card {
        width: 100% !important;
        margin-bottom: 10px;
    }
}

#word-box {
    font-size: 2.5rem;
}

#options button {
    font-size: 1.2rem;
}

.stellium-link {
    font-size: 1.3rem;
    font-weight: bold;
    text-decoration: none;
    background: linear-gradient(90deg, #00f5d4, #00bbf9, #9b5de5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: all 0.4s ease;
    position: relative;
}

.stellium-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #00f5d4, #00bbf9, #9b5de5);
    transition: width 0.4s ease;
}

.stellium-link:hover::after {
    width: 100%;
}

.stellium-link:hover {
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(155, 93, 229, 0.6);
}