/*
 * Compare Systems (Build 007 Gates 2-4). Scoped to templates/compare-systems.php.
 * Two comparison views share one DOM, one built from window.erCompareData:
 * .er-compare-table-grid (>=768px, pinned label column, horizontal scroll if
 * it overflows) and .er-compare-cards (<768px, horizontal snap cards) — CSS
 * toggles which is visible rather than duplicating markup per breakpoint.
 */

.er-compare-hero {
    background: radial-gradient(ellipse 120% 90% at 50% -10%, var(--er-graphite-400) 0%, var(--er-carbon-800) 55%, var(--er-carbon-900) 100%);
}

/* ---- Controls ---- */

.er-compare-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    gap: var(--er-space-5);
    margin-bottom: var(--er-space-5);
}

.er-compare-filter {
    display: flex;
    flex-direction: column;
    gap: var(--er-space-2);
}

.er-compare-filter label {
    font-family: var(--er-font-mono);
    font-size: var(--er-text-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--er-text-faint);
}

.er-compare-filter select {
    background: var(--er-bg-raised);
    color: var(--er-text);
    border: 1px solid var(--er-border-strong);
    border-radius: var(--er-radius-md);
    padding: var(--er-space-3) var(--er-space-4);
    font-size: var(--er-text-sm);
    min-width: 200px;
}

.er-compare-status {
    font-family: var(--er-font-mono);
    font-size: var(--er-text-sm);
    color: var(--er-accent-strong);
    margin-bottom: var(--er-space-5);
}

/* ---- Picker ---- */

.er-compare-picker {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--er-space-4);
}

.er-compare-pick-card {
    display: flex;
    flex-direction: column;
    text-align: left;
    background: var(--er-bg-raised);
    border: 1px solid var(--er-border);
    border-radius: var(--er-radius-md);
    padding: var(--er-space-4);
    cursor: pointer;
    font: inherit;
    color: inherit;
    transition: border-color var(--er-motion-fast) var(--er-ease-standard), background var(--er-motion-fast) var(--er-ease-standard);
    position: relative;
}

.er-compare-pick-card:hover {
    border-color: var(--er-border-strong);
}

.er-compare-pick-card.is-selected {
    border-color: var(--er-accent-strong);
    background: var(--er-bg-panel);
    box-shadow: 0 0 0 1px var(--er-accent-strong);
}

.er-compare-pick-card[aria-disabled="true"] {
    opacity: 0.4;
    cursor: not-allowed;
}

.er-compare-pick-card__image img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--er-radius-sm);
    margin-bottom: var(--er-space-3);
}

.er-compare-pick-card__body h3 {
    font-size: var(--er-text-md);
    margin-bottom: var(--er-space-1);
    /* Kadence's parent-theme heading style applies text-transform: uppercase
       by default, which silently turns ASH A(π)'s stored lowercase π into
       Π. Reset explicitly wherever a product's real name renders verbatim. */
    text-transform: none;
}

.er-compare-pick-card__price {
    font-family: var(--er-font-mono);
    color: var(--er-accent-strong);
    font-size: var(--er-text-sm);
    margin-bottom: var(--er-space-2);
}

.er-compare-pick-card__state {
    display: block;
    margin-top: var(--er-space-3);
    font-family: var(--er-font-mono);
    font-size: var(--er-text-xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--er-text-faint);
}

.er-compare-pick-card.is-selected .er-compare-pick-card__state {
    color: var(--er-accent-strong);
}

/* ---- Empty state ---- */

.er-compare-empty {
    text-align: center;
    padding-block: var(--er-space-6);
    color: var(--er-text-faint);
}

/* ---- Shared cell primitives ---- */

.er-compare-tag {
    display: inline-block;
    margin-top: var(--er-space-1);
    font-family: var(--er-font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.04em;
    color: var(--er-accent-strong);
}

.er-compare-tag::before {
    content: "▲ ";
}

.er-compare-remove {
    position: absolute;
    top: var(--er-space-2);
    right: var(--er-space-2);
    width: 28px;
    height: 28px;
    border-radius: var(--er-radius-full);
    border: 1px solid var(--er-border-strong);
    background: var(--er-bg-raised);
    color: var(--er-text-dim);
    font-size: var(--er-text-md);
    line-height: 1;
    cursor: pointer;
}

.er-compare-remove:hover {
    color: var(--er-risk);
    border-color: var(--er-risk);
}

/* ---- Desktop grid-table ---- */

.er-compare-table-grid {
    display: none;
}

@media (min-width: 768px) {
    .er-compare-table-grid {
        display: grid;
        grid-template-columns: 160px repeat(var(--er-compare-cols, 4), minmax(220px, 1fr));
        overflow-x: auto;
        border: 1px solid var(--er-border);
        border-radius: var(--er-radius-lg);
    }

    .er-compare-row {
        display: contents;
    }

    .er-compare-cell {
        padding: var(--er-space-4);
        border-bottom: 1px solid var(--er-border);
        font-size: var(--er-text-sm);
    }

    .er-compare-cell--label {
        position: sticky;
        left: 0;
        background: var(--er-bg-raised);
        font-weight: 600;
        color: var(--er-text-dim);
        z-index: 2;
    }

    .er-compare-row--header .er-compare-cell {
        position: sticky;
        top: 0;
        background: var(--er-bg);
        z-index: 3;
        padding-top: var(--er-space-5);
    }

    .er-compare-row--header .er-compare-cell--label {
        z-index: 4;
    }

    .er-compare-cell--product h3 {
        font-size: var(--er-text-md);
        margin-bottom: 0;
        text-transform: none;
    }

    .er-compare-cell--section {
        background: var(--er-bg-panel);
        color: var(--er-accent-strong);
        font-family: var(--er-font-mono);
        font-size: var(--er-text-xs);
        text-transform: uppercase;
        letter-spacing: 0.1em;
        position: sticky;
        left: 0;
    }

    .er-compare-cell--highlight {
        background: rgba(35, 165, 104, 0.1);
        border-left: 2px solid var(--er-accent-strong);
    }

    .er-compare-cell--differs {
        color: var(--er-text);
        font-weight: 600;
    }

    .er-compare-cell__image img {
        width: 64px;
        aspect-ratio: 1;
        object-fit: cover;
        border-radius: var(--er-radius-sm);
        margin-bottom: var(--er-space-2);
    }
}

/* ---- Mobile snap cards ---- */

.er-compare-cards {
    display: flex;
    gap: var(--er-space-4);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: var(--er-space-3);
}

@media (min-width: 768px) {
    .er-compare-cards {
        display: none;
    }
}

.er-compare-card {
    scroll-snap-align: center;
    flex: 0 0 88%;
    background: var(--er-bg-raised);
    border: 1px solid var(--er-border);
    border-radius: var(--er-radius-lg);
    padding: var(--er-space-5);
    position: relative;
}

.er-compare-card__header {
    margin-bottom: var(--er-space-4);
    padding-bottom: var(--er-space-4);
    border-bottom: 1px solid var(--er-border);
}

.er-compare-card__header h3 {
    margin-bottom: 0;
    text-transform: none;
}

.er-compare-card__price {
    font-family: var(--er-font-mono);
    color: var(--er-accent-strong);
    margin-top: var(--er-space-2);
}

.er-compare-card__specs {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--er-space-2) var(--er-space-4);
    margin: 0 0 var(--er-space-5);
}

.er-compare-card__specs dt {
    color: var(--er-text-faint);
    font-size: var(--er-text-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding-top: var(--er-space-1);
}

.er-compare-card__specs dd {
    margin: 0;
    font-size: var(--er-text-sm);
    color: var(--er-text);
}