@import "https://codepen.io/cbolson/pen/rNEdgKo.css" layer(template);
@layer template, demo;

@layer demo {
    /* Hide radio buttons */
    input[type="radio"] {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border-width: 0;
    }

    .cards-container {
        --base-rotation: 0deg;
        --full-circle: 360deg;
        --radius: 40vw;
        --duration: 200ms;

        --cards-container-size: calc(var(--radius) * 2);
        --cards-container-padding: 2rem;

        --border-color: transparent;

        --label-offset: calc(var(--radius) * -1 - 1rem);
        --label-size: 30px;
        --label-color: #666;
        --label-color-hover: steelblue;
        --label-line-h: 0;
        --label-line-h-current: 2rem;
        --label-dot-size: 10px;

        --title-top: 1.5rem;
        --title-offset-y: 30px;

        --info-top: 5rem;
        --info-width: min(70%, 500px);
        --info-offset-y: 30px;

        box-sizing: content-box;
        position: fixed;
        inset: 0;
        margin: 5rem auto;
        width: var(--cards-container-size);
        height: var(--cards-container-size);
        padding: var(--cards-container-padding);


    @media (width > 600px) {
        clip-path:

    polygon(0 0, 100% 0, 100% 50%, 0 50%);
    }
    @media (min-width: 800px) {
        --radius:

    30vw

    ;
        --label-size:

    40px

    ;
        --label-dot-size:

    15px

    ;
        --label-line-h-current:

    4rem

    ;
        --title-top:

    4rem

    ;
        --info-top:

    8rem

    ;
    }
}

@media (min-width: 1200px) {
    --label-size:

50px

;
    --border-color:

var(--label-color

);
}

}
.cards {
    position: absolute;
    inset: var(--cards-container-padding);
    aspect-ratio: 1;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease-in-out var(--duration);
    list-style: none;
}


.cards li {
    position: absolute;
    inset: 0;
    margin: 0;
    padding: 0;
    transform-origin: center;
    display: grid;
    place-content: center;
    transform: rotate(calc(var(--i) * 360deg / var(--items)));
    pointer-events: none;
}

.cards li > label {
    position: absolute;
    inset: 0;
    margin: auto;
    transform: translateY(var(--label-offset));
    width: var(--label-size);
    height: var(--label-size);
    cursor: pointer;
    pointer-events: initial;
    text-align: center;
    color: var(--label-color);
    font-size: clamp(.8rem, 2.5vw + .04rem, 1rem);
    transition: var(--duration) ease-in-out;

}

.cards li > label::before {
    content: '';
    position: absolute;
    top: var(--cards-container-padding);
    left: 50%;
    translate: -50% 0;
    width: var(--label-dot-size);
    height: var(--label-dot-size);
    aspect-ratio: 50%;
    border-radius: 50%;
    background-color: var(--label-color);
    transition: background-color var(--duration) ease-in-out;
}

.cards li > label::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    translate: -50% 5px;
    width: 2px;
    height: var(--label-line-h);
    background-color: steelblue;
    transition: height 300ms ease-in-out var(--label-line-delay, 0ms);
}

.cards li > label:hover {
    --label-color: var(--label-color-hover);
}

.cards > li > h2,
.cards > li > p {
    position: absolute;
    left: 50%;
    text-align: center;
    transform: translate(-50%, 0);
    transform-origin: center;
}

.cards > li > h2 {
    top: var(--title-top);
    opacity: var(--title-opacity, 0);
    translate: 0 var(--title-offset-y);
    transition: var(--duration) ease-in-out var(--title-delay, 0ms);
}

.cards > li > p {
    top: var(--info-top);
    margin: 0 auto;
    width: var(--info-width);
    z-index: 2;
    font-size: clamp(.8rem, 2.5vw + 0.05rem, .9rem);
    text-align: left;
    text-wrap: pretty;
    opacity: var(--info-opacity, 0);
    /*translate: 0 var( --info-offset-y);*/
    transition: var(--duration) ease-in-out var(--info-delay, 0ms);
}

/* update custom properties for checked item */
li:has(input:checked) {
    --label-opacity: 1;
    --label-color: var(--label-color-hover);
    --label-line-h: var(--label-line-h-current);
    --label-line-delay: calc(var(--duration) * 2);

    --title-opacity: 1;
    --title-offset-y: 0;
    --title-delay: calc(var(--duration) * 3);

    --info-opacity: 1;
    --info-offset-y: 0;
    --info-delay: calc(var(--duration) * 4);
    /*outline: 1px dashed red;*/
}

/* rotate container based on checked radio */
.cards:has(input:checked) {
    transform: rotate(calc(var(--base-rotation) - (var(--index) * var(--full-circle) / var(--items))));
}

/*
this would be so much simpler if we could use counter values as custom property values
*/
.cards:has(li:nth-child(1)>input:checked) {
    --index: 0;
}

.cards:has(li:nth-child(2)>input:checked) {
    --index: 1;
}

.cards:has(li:nth-child(3)>input:checked) {
    --index: 2;
}

.cards:has(li:nth-child(4)>input:checked) {
    --index: 3;
}

.cards:has(li:nth-child(5)>input:checked) {
    --index: 4;
}

.cards:has(li:nth-child(6)>input:checked) {
    --index: 5;
}

.cards:has(li:nth-child(7)>input:checked) {
    --index: 6;
}

.cards:has(li:nth-child(8)>input:checked) {
    --index: 7;
}

.cards:has(li:nth-child(9)>input:checked) {
    --index: 8;
}

.cards:has(li:nth-child(10)>input:checked) {
    --index: 9;
}

.cards:has(li:nth-child(11)>input:checked) {
    --index: 10;
}

.cards:has(li:nth-child(12)>input:checked) {
    --index: 11;
}

.cards:has(li:nth-child(13)>input:checked) {
    --index: 12;
}

.cards:has(li:nth-child(14)>input:checked) {
    --index: 13;
}

.cards:has(li:nth-child(15)>input:checked) {
    --index: 14;
}

.cards:has(li:nth-child(16)>input:checked) {
    --index: 15;
}

.cards:has(li:nth-child(17)>input:checked) {
    --index: 16;
}

.cards:has(li:nth-child(18)>input:checked) {
    --index: 17;
}

.cards:has(li:nth-child(19)>input:checked) {
    --index: 18;
}

.cards:has(li:nth-child(20)>input:checked) {
    --index: 19;
}

.cards:has(li:nth-child(21)>input:checked) {
    --index: 20;
}

.cards:has(li:nth-child(22)>input:checked) {
    --index: 21;
}

.cards:has(li:nth-child(23)>input:checked) {
    --index: 22;
}

.cards:has(li:nth-child(24)>input:checked) {
    --index: 23;
}

.cards:has(li:nth-child(25)>input:checked) {
    --index: 24;
}

}


/* Make sure container is relative so we can absolutely place nav inside */
.cards-container {
    position: relative; /* overrides the fixed from earlier */
}

/* Nav wrapper centered horizontally, in the content area */
.timeline-nav {
    position: absolute;
    left: 50%;
    top: calc(var(--info-top) + 45%);  /* 30% lower than before */
    transform: translate(-50%, 0);
    display: flex;
    align-items: center;
    gap: 1.5rem;
    pointer-events: none;
}

/* Actual arrow buttons (clickable) */
.timeline-arrow {
    pointer-events: auto;                /* re-enable clicks */
    border: none;
    padding: 0.35rem 0.9rem;
    border-radius: 999px;
    font-size: 1.4rem;
    line-height: 1;
    background: #ffffff;
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
    cursor: pointer;
    transition: transform 150ms ease, box-shadow 150ms ease;
}

.timeline-arrow:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 28px rgba(0,0,0,0.16);
}

.timeline-arrow:active {
    transform: translateY(0);
    box-shadow: 0 3px 10px rgba(0,0,0,0.18);
}

/* Mobile reflow for timeline arrows */
@media (max-width: 720px) {
    .timeline-nav {
        position: relative !important;
        top: auto !important;
        left: 50% !important;
        transform: translateX(-50%) !important;

        margin-top: calc(var(--cards-container-size) + 0.75rem); /* push below the circle */
        justify-content: center;
        width: 100%;
        pointer-events: none;
        margin-bottom: calc(var(--cards-container-size) + 1.5rem);
    }

    .timeline-arrow {
        pointer-events: auto;
    }

    /* Shrink arrow size slightly for small screens */
    .timeline-arrow {
        font-size: 1.2rem;
        padding: 0.3rem 0.8rem;
    }
}

/* --- Typography Adjustments --- */

/* Desktop ≥ 720px */
@media (min-width: 720px) {
    .cards > li > h2 {
        font-size: 22px !important;
        margin-top: 0 !important;
        margin-bottom: 4px !important;  /* bring h2 closer to p */
    }

    .cards > li > p {
        font-size: 20px !important;
    }
}

/* Mobile ≤ 720px */
@media (max-width: 720px) {
    .cards > li > h2 {
        font-size: 15px !important;
        margin-top: 0 !important;
        margin-bottom: 2px !important; /* tighten spacing even more */
    }

    .cards > li > p {
        font-size: 13px !important;
    }
}

/* Optional: global tightening if needed */
.cards > li > h2 {
    line-height: 1.2 !important;
}

.cards > li > p {
    line-height: 1.5 !important;
}