/**
 * Timeline — style.css
 *
 * Vertical connector line, icon markers, and content layout.
 * Marker styles: outlined, fill, square-outline, square-fill, icon-only.
 */

/* ── Parent: vertical line ──────────────────────────────────────────────────── */

.oi-timeline {
    --_line-color: var(--oi-timeline-line-color, var(--wp--preset--color--palette-6));
    --_line-width: var(--oi-timeline-line-width, 2px);
    --_marker-size: var(--oi-timeline-marker-size, 40px);
    --_icon-color: var(--oi-timeline-icon-color, var(--wp--preset--color--palette-1));
    --_item-gap: var(--oi-timeline-item-gap, 32px);
    position: relative;
    padding-left: var(--_marker-size);
}

/* The vertical connector line */
.oi-timeline::before {
    content: '';
    position: absolute;
    top: calc(var(--_marker-size) / 2);
    bottom: calc(var(--_marker-size) / 2);
    left: calc(var(--_marker-size) / 2 - var(--_line-width) / 2);
    width: var(--_line-width);
    background: var(--_line-color);
}

/* ── Item ────────────────────────────────────────────────────────────────────── */

/* Frontend: margin on rendered items */
.oi-timeline > .oi-timeline-item {
    margin-bottom: var(--_item-gap, 32px);
}

.oi-timeline > .oi-timeline-item:last-child {
    margin-bottom: 0;
}

/* Editor: gap between timeline items only (direct children of timeline's block list) */
.oi-timeline > .block-editor-inner-blocks > .block-editor-block-list__layout {
    gap: var(--_item-gap, 32px);
}

/* Ensure nested block lists (groups inside items) aren't affected */
.oi-timeline .oi-timeline-item .block-editor-block-list__layout {
    gap: revert;
}

.oi-timeline-item {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 1.25em;
}

/* ── Marker container ────────────────────────────────────────────────────── */

.oi-timeline-item__marker {
    flex-shrink: 0;
    flex-grow: 0;
    width: var(--_marker-size, 40px);
    height: var(--_marker-size, 40px);
    min-width: var(--_marker-size, 40px);
    margin-left: calc(var(--_marker-size) * -1);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

/* ── Icon element (base) ─────────────────────────────────────────────────── */

.oi-timeline-item__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--_marker-size, 40px);
    height: var(--_marker-size, 40px);
    min-width: var(--_marker-size, 40px);
    min-height: var(--_marker-size, 40px);
    max-width: var(--_marker-size, 40px);
    max-height: var(--_marker-size, 40px);
    font-size: calc(var(--_marker-size, 40px) * 0.4);
    line-height: 1;
    box-sizing: border-box;
    aspect-ratio: 1;
    overflow: hidden;
    color: var(--_icon-color);
}

/* ── Marker style: Outlined Circle (default) ─────────────────────────────── */

.oi-timeline--outlined .oi-timeline-item__icon {
    border-radius: 50%;
    background: var(--wp--preset--color--palette-9, #fff);
    border: var(--_line-width, 2px) solid var(--_line-color);
}

/* ── Marker style: Filled Circle ──────────────────────────────────────────── */

.oi-timeline--fill .oi-timeline-item__icon {
    border-radius: 50%;
    background: var(--_icon-color);
    color: var(--wp--preset--color--palette-9, #fff);
    border: none;
}

/* ── Marker style: Outlined Square ────────────────────────────────────────── */

.oi-timeline--square-outline .oi-timeline-item__icon {
    border-radius: 4px;
    background: var(--wp--preset--color--palette-9, #fff);
    border: var(--_line-width, 2px) solid var(--_line-color);
}

/* ── Marker style: Filled Square ──────────────────────────────────────────── */

.oi-timeline--square-fill .oi-timeline-item__icon {
    border-radius: 4px;
    background: var(--_icon-color);
    color: var(--wp--preset--color--palette-9, #fff);
    border: none;
}

/* ── Marker style: Icon Only (no container) ───────────────────────────────── */

.oi-timeline--icon-only .oi-timeline-item__icon {
    background: transparent;
    border: none;
    font-size: calc(var(--_marker-size, 40px) * 0.55);
}

/* ── Body ────────────────────────────────────────────────────────────────── */

.oi-timeline-item__body {
    flex: 1;
    min-width: 0;
}

/* Label paragraph class — styled when used inside timeline */
.oi-timeline-item__body .oi-timeline-item__label {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--wp--preset--color--palette-4);
}


/* ── Alternate mode: zigzag left/right ──────────────────────────────────── */

.oi-timeline--alternate {
    padding-left: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.oi-timeline--alternate::before {
    left: 50%;
    transform: translateX(-50%);
}

.oi-timeline--alternate .oi-timeline-item {
    width: 50%;
    margin-bottom: var(--_item-gap, 32px);
}

.oi-timeline--alternate .oi-timeline-item:last-child {
    margin-bottom: 0;
}

.oi-timeline--alternate .oi-timeline-item__marker {
    margin-left: 0;
}

.oi-timeline--alternate .oi-timeline-item:nth-child(odd) {
    align-self: flex-start;
    padding-right: calc(var(--_marker-size) / 2 + 1.25em);
    flex-direction: row-reverse;
    text-align: right;
}

.oi-timeline--alternate .oi-timeline-item:nth-child(odd) .oi-timeline-item__marker {
    position: absolute;
    right: 0;
    transform: translateX(50%);
}

.oi-timeline--alternate .oi-timeline-item:nth-child(even) {
    align-self: flex-end;
    padding-left: calc(var(--_marker-size) / 2 + 1.25em);
}

.oi-timeline--alternate .oi-timeline-item:nth-child(even) .oi-timeline-item__marker {
    position: absolute;
    left: 0;
    transform: translateX(-50%);
}

/* ── Responsive: stack on mobile ────────────────────────────────────────── */

@media (max-width: 768px) {
    .oi-timeline--alternate {
        padding-left: var(--_marker-size);
        align-items: stretch;
    }

    .oi-timeline--alternate::before {
        left: calc(var(--_marker-size) / 2 - var(--_line-width) / 2);
        transform: none;
    }

    .oi-timeline--alternate .oi-timeline-item {
        width: 100%;
        flex-direction: row;
        text-align: left;
        padding-left: 0;
        padding-right: 0;
    }

    .oi-timeline--alternate .oi-timeline-item:nth-child(odd) {
        flex-direction: row;
        text-align: left;
        padding-right: 0;
    }

    .oi-timeline--alternate .oi-timeline-item__marker {
        margin-left: calc(var(--_marker-size) * -1);
    }

    .oi-timeline--alternate .oi-timeline-item:nth-child(odd) .oi-timeline-item__marker,
    .oi-timeline--alternate .oi-timeline-item:nth-child(even) .oi-timeline-item__marker {
        position: relative;
        left: auto;
        right: auto;
        transform: none;
    }
}

/* ── Reduced motion ─────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    .oi-timeline-item {
        transition: none;
    }
}