.simple-stars
{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(ellipse at center, #0a0e17 0%, #050811 70%);
    overflow: hidden;
}

.star
{
    position: absolute;
    background-color: #fff;
    border-radius: 50%;
    animation: twinkle 8s infinite ease-in-out;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
    z-index: 2;
}

.star.small
{
    width: 1px;
    height: 1px;
}

.star.medium
{
    width: 2px;
    height: 2px;
}

.star.large
{
    width: 3px;
    height: 3px;
}

.star.giant
{
    width: 4px;
    height: 4px;
    box-shadow: 0 0 15px rgba(255, 255, 255, 1);
}

.star.blue
{
    background-color: #a4d4ff;
    box-shadow: 0 0 10px rgba(164, 212, 255, 0.8);
}

.star.purple
{
    background-color: #d4a4ff;
    box-shadow: 0 0 10px rgba(212, 164, 255, 0.8);
}

.shooting-star
{
    position: absolute;
    width: 3px;
    height: 3px;
    background: linear-gradient(90deg, #fff, #a4d4ff, transparent);
    border-radius: 50%;
    filter: blur(1px);
    animation: shoot 6s linear forwards;
    z-index: 2;
}

.shooting-star::before
{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100px;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
    transform: translateX(-100px);
}

@keyframes twinkle
{
    0%, 100%
    {
        opacity: 0.3;
        transform: scale(1);
    }
    50%
    {
        opacity: 1;
        transform: scale(1.3);
    }
}

@keyframes shoot
{
    0%
    {
        transform: translateX(0) translateY(0) rotate(45deg);
        opacity: 0;
    }
    10%
    {
        opacity: 1;
    }
    100%
    {
        transform: translateX(1000px) translateY(1000px) rotate(45deg);
        opacity: 0;
    }
}

@keyframes twinkleFast
{
    0%, 100%
    {
        opacity: 0.2;
        transform: scale(1);
    }
    50%
    {
        opacity: 0.9;
        transform: scale(1.2);
    }
}

@keyframes twinkleSlow
{
    0%, 100%
    {
        opacity: 0.1;
        transform: scale(1);
    }
    50%
    {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

.star.twinkle-fast
{
    animation: twinkleFast 4s infinite ease-in-out;
}

.star.twinkle-slow
{
    animation: twinkleSlow 12s infinite ease-in-out;
}