/* CPX Scroll Sections – design-conform (timeline + divider) */

/* ===== Variables ===== */
main {
    --cpx-gap: 2.5rem;

    --cpx-heading-size: clamp(1.4rem, 1rem + 1.2vw, 2rem);
    --cpx-title-size: clamp(0.95rem, 0.8rem + 0.4vw, 1.05rem);
    --cpx-title-size-active: clamp(1.05rem, 0.9rem + 0.6vw, 1.2rem);

    --cpx-dot-size: 10px;
    --cpx-dot-size-active: 14px;

    --cpx-color-bg: transparent;
    --cpx-color-text: #ffffff;
    --cpx-color-muted: #cfd3db;
    --cpx-color-accent: var(--e-global-color-primary);
    /* green */
    --cpx-color-dot: #ffffff;
    --cpx-color-dot-border: rgba(255, 255, 255, .35);

    --cpx-spine-color: rgba(255, 255, 255, .2);
    --cpx-divider-color: var(--e-global-color-primary);
    /* cyan/green-ish per design */

    --cpx-panel-transition: 220ms ease;
}

/* ===== Block ===== */
.scroll-sections {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
    color: var(--cpx-color-text);
}

.scroll-sections__inner {
    display: grid;
    grid-template-columns: minmax(230px, auto) 1px 1fr;
    gap: var(--cpx-gap);
    align-items: center;
}

/* ===== Left: Nav + Heading ===== */
.scroll-sections__nav {
    position: relative;

    min-height: 650px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.scroll-sections__heading {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: var(--cpx-heading-size);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

/* Lijst */
.scroll-sections__nav__list {
    margin: 0;
    padding: 0;
    list-style: none;
}

.scroll-sections__nav__item {
    margin: 0;
    padding: 0;
}

/* Buttons */
.scroll-sections__nav__button {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding-top: 0.4rem;
    padding-bottom: 0.4rem;
    background-color: transparent !important;
    border-radius: 0 !important;
    border: none !important;
    text-align: left;
    cursor: pointer;
}

.scroll-sections__nav__button:focus {
    outline: none !important;
    border: none !important;
}

/* Dot die op de spine “zit” */
.scroll-sections__nav__dot {
    position: relative;
    flex: 0 0 auto;
    width: var(--cpx-dot-size);
    height: var(--cpx-dot-size);
    margin-left: -1.25rem;
    /* centreren t.o.v. spine */
    border-radius: 50%;
    border-width: 2px;
    border-style: solid;
    border-color: var(--cpx-color-dot-border);
    background-color: var(--cpx-color-dot);
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0);
    transition: transform 150ms ease, background-color 150ms ease, box-shadow 150ms ease, border-color 150ms ease, width 150ms ease, height 150ms ease;
}

/* Titels */
.scroll-sections__nav__title {
    display: inline-block;
    line-height: 1.25;
    font-weight: 800;
    text-transform: uppercase;
    font-size: var(--cpx-title-size);
    color: var(--cpx-color-muted);
    transition: color 150ms ease, font-size 150ms ease;
}

/* Active */
.scroll-sections__nav__button.is-active .scroll-sections__nav__dot {
    width: var(--cpx-dot-size-active);
    height: var(--cpx-dot-size-active);
    background-color: var(--cpx-color-accent);
    border-color: var(--cpx-color-accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--cpx-color-accent) 25%, transparent);
}

.scroll-sections__nav__button.is-active .scroll-sections__nav__title {
    color: var(--cpx-color-text);
    font-size: var(--cpx-title-size-active);
}

.scroll-sections__nav__button:hover .scroll-sections__nav__dot {
    width: var(--cpx-dot-size-active);
    height: var(--cpx-dot-size-active);
    border-color: var(--cpx-color-accent);
}

/* ===== Vertical divider (tussen kolommen) ===== */
.scroll-sections__divider {
    width: 2px;
    height: 160px;
    background-color: var(--cpx-divider-color);
    border-radius: 2px;
    align-self: center;
}

/* Wrapper animates height smoothly (also min-height for the first frame) */
.scroll-sections__content {
    position: relative;
    overflow: hidden;
    transition: all var(--cpx-panel-transition);
    will-change: height;
}

/* Panel fade/translate – geen absolute stacking hier (doen we alleen tijdelijk in JS) */
.scroll-sections__panel {
    transition: opacity var(--cpx-panel-transition), transform var(--cpx-panel-transition);
    will-change: opacity, transform;
}

/* Zorg dat alleen het actieve paneel klikbaar is (JS zet hidden voor de rest) */
.scroll-sections__panel:not(.is-active) {
    pointer-events: none;
}

/* ===== Responsive ===== */
@media (max-width: 920px) {
    .scroll-sections__inner {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .scroll-sections__divider {
        display: none;
    }

    .scroll-sections__nav {
        padding-left: 1.6rem;
    }
}