.phlox-spinner {
    --phlox-spinner-size: 24px;
    --phlox-ring-outer: #00e676;
    --phlox-ring-middle: #00c853;
    --phlox-ring-inner: #00a844;
    --phlox-ring-track: rgba(255, 255, 255, 0.15);
    position: relative;
    display: inline-block;
    width: var(--phlox-spinner-size);
    height: var(--phlox-spinner-size);
}

.phlox-ring {
    position: absolute;
    border-radius: 50%;
    border-style: solid;
    border-color: var(--phlox-ring-track);
    box-sizing: border-box;
}

.phlox-ring-outer {
    inset: 0;
    border-width: 2.5px;
    border-top-color: var(--phlox-ring-outer);
    transform: rotate(0deg);
}

.phlox-ring-middle {
    inset: 17%;
    border-width: 2px;
    border-top-color: var(--phlox-ring-middle);
    transform: rotate(30deg);
}

.phlox-ring-inner {
    inset: 29%;
    border-width: 2px;
    border-top-color: var(--phlox-ring-inner);
    transform: rotate(60deg);
}

/* --- Spin animations --- */

@keyframes phlox-spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes phlox-spin-reverse {
    from {
        transform: rotate(30deg);
    }
    to {
        transform: rotate(-330deg);
    }
}

@keyframes phlox-spin-offset {
    from {
        transform: rotate(60deg);
    }
    to {
        transform: rotate(420deg);
    }
}

.phlox-spinner.spinning .phlox-ring-outer {
    animation: phlox-spin 0.7s linear infinite;
}

.phlox-spinner.spinning .phlox-ring-middle {
    animation: phlox-spin-reverse 0.875s linear infinite;
}

.phlox-spinner.spinning .phlox-ring-inner {
    animation: phlox-spin-offset 1.05s linear infinite;
}

/* --- Collapse & bloom transition --- */

@keyframes phlox-collapse-bloom {
    0% {
        transform: scale(1);
        opacity: 1;
        animation-timing-function: cubic-bezier(0.55, 0, 0.67, 0.02);
    }
    30% {
        transform: scale(0);
        opacity: 0;
        animation-timing-function: linear;
    }
    55% {
        transform: scale(0);
        opacity: 0;
        animation-timing-function: cubic-bezier(0.34, 1.56, 0.64, 1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.phlox-spinner.collapsing {
    animation: phlox-collapse-bloom 0.8s forwards;
}