/**
 * Pipeline stepper — RTL: line from right (first step) to left (last step).
 * Track endpoints align with disc centers: inset calc(50% / n).
 * Uses :root --burgundy; --pl-nodes on .pl-stepper = number of steps.
 */
.pl-stepper {
    --pl-active: var(--primary, var(--burgundy, #6f1d39));
    --pl-active-soft: var(--chip-bg, #f2e3e3);
    --pl-disc: 0.625rem;
    --pl-track: #e5e7eb;
    --pl-pending-border: #d1d5db;
    --pl-pending-bg: #f9fafb;
    /* Opaque mauve/burgundy tints (no alpha on discs) */
    --pl-done-border: #8e5a6b;
    --pl-done-bg: #f2e3e3;
    --pl-label-muted: #6b7280;
    --pl-label-done: #4b5563;
    /* Active-disc glow colors */
    --pl-glow-soft: rgba(111, 29, 57, 0.24);
    --pl-glow-strong: rgba(111, 29, 57, 0.42);
    --pl-glow-soft: color-mix(in srgb, var(--pl-active) 24%, transparent);
    --pl-glow-strong: color-mix(in srgb, var(--pl-active) 42%, transparent);
}

@media (min-width: 400px) {
    .pl-stepper {
        --pl-disc: 0.75rem;
    }
}

.pl-stepper__frame {
    border: 1px solid var(--border, rgba(107, 44, 67, 0.12));
    background: var(--panel2, #fcfaf7);
    border-radius: 0.75rem;
}

/* Flex row, RTL: first node (index 0) on the right = process start */
.pl-stepper__track {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    justify-content: space-between;
    width: 100%;
    min-width: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Line: exactly between the outer disc centers: inset 50%/n on each side */
.pl-stepper__line-bg,
.pl-stepper__line-fill {
    position: absolute;
    top: calc(var(--pl-disc) / 2);
    left: calc(50% / var(--pl-nodes, 5));
    right: calc(50% / var(--pl-nodes, 5));
    height: 2px;
    margin-top: -1px;
    border-radius: 1px;
    z-index: 0;
    box-sizing: border-box;
    pointer-events: none;
}

.pl-stepper__line-bg {
    background: var(--pl-track);
    width: auto;
}

/* Anchor at track start (right); grow left. Width: (100*idx/n)% of track (see pipeline-stepper.js) */
.pl-stepper__line-fill {
    left: auto; /* fill grows from the right; shared rule above sets right */
    width: 0;
    max-width: none;
    background: var(--pl-active);
    transition: width 0.45s ease;
}

.pl-stepper__node {
    position: relative;
    z-index: 1;
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.pl-stepper__disc {
    width: var(--pl-disc);
    height: var(--pl-disc);
    border-radius: 9999px;
    box-sizing: border-box;
    border: 2px solid var(--pl-pending-border);
    background: var(--pl-pending-bg);
    flex-shrink: 0;
    opacity: 1;
    transform-origin: center;
    transition: transform 0.24s ease, box-shadow 0.24s ease;
}

.pl-stepper__node--pending .pl-stepper__disc {
    border-color: var(--pl-pending-border);
    background: var(--pl-pending-bg);
}

.pl-stepper__node--done .pl-stepper__disc {
    border-color: var(--pl-done-border);
    background: var(--pl-done-bg);
}

.pl-stepper__node--active .pl-stepper__disc {
    border-color: var(--pl-active);
    background: var(--pl-active-soft);
    will-change: transform, box-shadow;
    transform: translateZ(0);
    box-shadow:
        0 0 6px 1px var(--pl-glow-soft),
        0 0 10px 2px var(--pl-glow-strong);
    animation: pl-star-beat 1.35s ease-in-out infinite;
}

@keyframes pl-star-beat {
    0%,
    100% {
        transform: scale(1);
        box-shadow:
            0 0 6px 1px var(--pl-glow-soft),
            0 0 10px 2px var(--pl-glow-strong);
    }
    24% {
        transform: scale(1.08);
        box-shadow:
            0 0 9px 2px var(--pl-glow-soft),
            0 0 14px 3px var(--pl-glow-strong);
    }
    48% {
        transform: scale(1.02);
        box-shadow:
            0 0 7px 1px var(--pl-glow-soft),
            0 0 11px 2px var(--pl-glow-strong);
    }
    70% {
        transform: scale(1.05);
        box-shadow:
            0 0 8px 2px var(--pl-glow-soft),
            0 0 13px 3px var(--pl-glow-strong);
    }
}

@media (max-width: 1023px) {
    .pl-stepper__node--active .pl-stepper__disc {
        box-shadow:
            0 0 6px 1px var(--pl-glow-soft),
            0 0 10px 2px var(--pl-glow-strong);
        animation: pl-star-beat 1.35s ease-in-out infinite;
    }
}

@media (prefers-reduced-motion: reduce) {
    .pl-stepper__node--active .pl-stepper__disc {
        animation: none;
    }
}

.pl-stepper__label {
    margin-top: 0.45rem;
    font-size: 0.6rem;
    line-height: 1.2;
    text-align: center;
    color: var(--pl-label-muted);
    max-width: 4.2rem;
    font-weight: 500;
}

@media (min-width: 450px) {
    .pl-stepper__label {
        font-size: 0.65rem;
        max-width: 5.5rem;
    }
}

@media (min-width: 640px) {
    .pl-stepper__label {
        font-size: 0.7rem;
        max-width: 6.5rem;
    }
}

.pl-stepper__node--active .pl-stepper__label {
    color: var(--pl-active);
    font-weight: 700;
}

.pl-stepper__node--done .pl-stepper__label {
    color: var(--pl-label-done);
}

.pl-stepper__node--pending .pl-stepper__label {
    color: var(--pl-label-muted);
}