.neon-checkbox {
    --primary: rgb(38, 206, 4);
    --primary-dark: rgb(220, 0, 0);
    --primary-light: rgb(220, 0, 0);
    --size: 30px;
    position: relative;
    width: var(--size);
    height: var(--size);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.neon-checkbox input {
    display: none;
}

.neon-checkbox__frame {
    position: relative;
    width: 100%;
    height: 100%;
}

.neon-checkbox__box {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 4px;
    border: 2px solid var(--primary-dark);
    transition: all 0.4s ease;
}

.neon-checkbox__check-container {
    position: absolute;
    inset: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.neon-checkbox__check {
    width: 80%;
    height: 80%;
    fill: none;
    stroke: var(--primary);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 40;
    stroke-dashoffset: 40;
    transform-origin: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.neon-checkbox__glow {
    position: absolute;
    inset: -2px;
    border-radius: 6px;
    background: var(--primary);
    opacity: 0;
    filter: blur(8px);
    transform: scale(1.2);
    transition: all 0.4s ease;
}

.neon-checkbox__borders {
    position: absolute;
    inset: 0;
    border-radius: 4px;
    overflow: hidden;
}

.neon-checkbox__borders span {
    position: absolute;
    width: 40px;
    height: 1px;
    background: var(--primary);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.neon-checkbox__borders span:nth-child(1) {
    top: 0;
    left: -100%;
    animation: borderFlow1 2s linear infinite;
}

.neon-checkbox__borders span:nth-child(2) {
    top: -100%;
    right: 0;
    width: 1px;
    height: 40px;
    animation: borderFlow2 2s linear infinite;
}

.neon-checkbox__borders span:nth-child(3) {
    bottom: 0;
    right: -100%;
    animation: borderFlow3 2s linear infinite;
}

.neon-checkbox__borders span:nth-child(4) {
    bottom: -100%;
    left: 0;
    width: 1px;
    height: 40px;
    animation: borderFlow4 2s linear infinite;
}

.neon-checkbox__particles span {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0;
    pointer-events: none;
    top: 50%;
    left: 50%;
    box-shadow: 0 0 6px var(--primary);
}

.neon-checkbox__rings {
    position: absolute;
    inset: -20px;
    pointer-events: none;
}

.neon-checkbox__rings .ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid var(--primary);
    opacity: 0;
    transform: scale(0);
}

.neon-checkbox__sparks span {
    position: absolute;
    width: 20px;
    height: 1px;
    background: linear-gradient(90deg, var(--primary), transparent);
    opacity: 0;
}

/* Hover Effects */
.neon-checkbox:hover .neon-checkbox__box {
    border-color: var(--primary);
    transform: scale(1.05);
}

/* Checked State */
.neon-checkbox input:checked~.neon-checkbox__frame .neon-checkbox__box {
    border-color: var(--primary);
    background: rgba(0, 255, 170, 0.1);
}

.neon-checkbox input:checked~.neon-checkbox__frame .neon-checkbox__check {
    stroke-dashoffset: 0;
    transform: scale(1.1);
}

.neon-checkbox input:checked~.neon-checkbox__frame .neon-checkbox__glow {
    opacity: 0.2;
}

.neon-checkbox input:checked~.neon-checkbox__frame .neon-checkbox__borders span {
    opacity: 1;
}

/* Particle Animations */
.neon-checkbox input:checked~.neon-checkbox__frame .neon-checkbox__particles span {
    animation: particleExplosion 0.6s ease-out forwards;
}

.neon-checkbox input:checked~.neon-checkbox__frame .neon-checkbox__rings .ring {
    animation: ringPulse 0.6s ease-out forwards;
}

.neon-checkbox input:checked~.neon-checkbox__frame .neon-checkbox__sparks span {
    animation: sparkFlash 0.6s ease-out forwards;
}

/* Animations */
@keyframes borderFlow1 {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(200%);
    }
}

@keyframes borderFlow2 {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(200%);
    }
}

@keyframes borderFlow3 {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-200%);
    }
}

@keyframes borderFlow4 {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(-200%);
    }
}

@keyframes particleExplosion {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0;
    }

    20% {
        opacity: 1;
    }

    100% {
        transform: translate(calc(-50% + var(--x, 20px)),
                calc(-50% + var(--y, 20px))) scale(0);
        opacity: 0;
    }
}

@keyframes ringPulse {
    0% {
        transform: scale(0);
        opacity: 1;
    }

    100% {
        transform: scale(2);
        opacity: 0;
    }
}

@keyframes sparkFlash {
    0% {
        transform: rotate(var(--r, 0deg)) translateX(0) scale(1);
        opacity: 1;
    }

    100% {
        transform: rotate(var(--r, 0deg)) translateX(30px) scale(0);
        opacity: 0;
    }
}

/* Particle Positions */
.neon-checkbox__particles span:nth-child(1) {
    --x: 25px;
    --y: -25px;
}

.neon-checkbox__particles span:nth-child(2) {
    --x: -25px;
    --y: -25px;
}

.neon-checkbox__particles span:nth-child(3) {
    --x: 25px;
    --y: 25px;
}

.neon-checkbox__particles span:nth-child(4) {
    --x: -25px;
    --y: 25px;
}

.neon-checkbox__particles span:nth-child(5) {
    --x: 35px;
    --y: 0px;
}

.neon-checkbox__particles span:nth-child(6) {
    --x: -35px;
    --y: 0px;
}

.neon-checkbox__particles span:nth-child(7) {
    --x: 0px;
    --y: 35px;
}

.neon-checkbox__particles span:nth-child(8) {
    --x: 0px;
    --y: -35px;
}

.neon-checkbox__particles span:nth-child(9) {
    --x: 20px;
    --y: -30px;
}

.neon-checkbox__particles span:nth-child(10) {
    --x: -20px;
    --y: 30px;
}

.neon-checkbox__particles span:nth-child(11) {
    --x: 30px;
    --y: 20px;
}

.neon-checkbox__particles span:nth-child(12) {
    --x: -30px;
    --y: -20px;
}

/* Spark Rotations */
.neon-checkbox__sparks span:nth-child(1) {
    --r: 0deg;
    top: 50%;
    left: 50%;
}

.neon-checkbox__sparks span:nth-child(2) {
    --r: 90deg;
    top: 50%;
    left: 50%;
}

.neon-checkbox__sparks span:nth-child(3) {
    --r: 180deg;
    top: 50%;
    left: 50%;
}

.neon-checkbox__sparks span:nth-child(4) {
    --r: 270deg;
    top: 50%;
    left: 50%;
}

/* Ring Delays */
.neon-checkbox__rings .ring:nth-child(1) {
    animation-delay: 0s;
}

.neon-checkbox__rings .ring:nth-child(2) {
    animation-delay: 0.1s;
}

.neon-checkbox__rings .ring:nth-child(3) {
    animation-delay: 0.2s;
}