/* ER Category + Product Detail — Build 005
 * Accordion (native details/summary — keyboard-accessible by default),
 * compare-selection toggle, capability snapshot bars (reuses .er-capability
 * primitives from components.css), tier cards, and per-family hero motifs.
 */

/* ---------- Accordion (engineering detail, FAQ) ---------- */
.er-details {
    border-bottom: 1px solid var(--er-border);
}

.er-details summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--er-space-4);
    padding: var(--er-space-4) var(--er-space-2);
    font-weight: 600;
    font-family: var(--er-font-display);
    color: var(--er-text);
}

.er-details summary::-webkit-details-marker {
    display: none;
}

.er-details summary::after {
    content: "+";
    font-size: 1.4em;
    line-height: 1;
    color: var(--er-accent-strong);
    flex-shrink: 0;
}

.er-details[open] summary::after {
    content: "\2212"; /* minus sign */
}

.er-details summary:hover {
    color: var(--er-signal-green);
}

.er-details summary:focus-visible {
    outline: 2px solid var(--er-accent-strong);
    outline-offset: 2px;
}

.er-details__body {
    padding: 0 var(--er-space-2) var(--er-space-5);
    color: var(--er-text-dim);
    font-size: var(--er-text-sm);
}

/* ---------- Product-detail add-to-cart (Build 005 Gate 6/10) ----------
 * Kadence styles WooCommerce's own add-to-cart button with its default
 * blue and the quantity stepper with a plain white input — both bypass
 * our button language entirely since they're WC-generated markup, not
 * ours. Restyle to match .er-btn--primary. */
.er-product-add-to-cart form.cart {
    display: flex;
    align-items: center;
    gap: var(--er-space-3);
    flex-wrap: wrap;
}

.er-product-add-to-cart .quantity input.qty {
    background: var(--er-bg-raised);
    border: 1px solid var(--er-border-strong);
    border-radius: var(--er-radius-sm);
    color: var(--er-text);
    font-family: var(--er-font-mono);
    width: 4.5rem;
    height: 44px;
    text-align: center;
}

.er-product-add-to-cart .single_add_to_cart_button {
    background: linear-gradient(155deg, var(--er-emerald-400) 0%, var(--er-emerald-600) 100%) !important;
    color: var(--er-carbon-900) !important;
    border: 1px solid var(--er-emerald-400) !important;
    border-radius: var(--er-radius-sm) !important;
    font-family: var(--er-font-body) !important;
    font-weight: 600 !important;
    font-size: var(--er-text-base) !important;
    padding: var(--er-space-4) var(--er-space-7) !important;
    min-height: 44px;
}

.er-product-add-to-cart .single_add_to_cart_button:hover {
    background: linear-gradient(155deg, var(--er-emerald-400) 0%, var(--er-emerald-500) 100%) !important;
    box-shadow: 0 0 32px var(--er-signal-green-glow);
}

/* ---------- Compare-selection toggle (Build 005 Gate 9 — hooks only,
 * full Compare Systems tool ships in Build 007) ---------- */
.er-compare-toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--er-space-2);
    background: transparent;
    border: 1px solid var(--er-border-strong);
    border-radius: var(--er-radius-sm);
    color: var(--er-text-dim);
    font-size: var(--er-text-xs);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: var(--er-space-2) var(--er-space-3);
    cursor: pointer;
    transition: border-color var(--er-motion-fast) var(--er-ease-standard),
                color var(--er-motion-fast) var(--er-ease-standard),
                background var(--er-motion-fast) var(--er-ease-standard);
}

.er-compare-toggle:hover {
    border-color: var(--er-accent-strong);
    color: var(--er-text);
}

.er-compare-toggle[aria-pressed="true"] {
    background: rgba(62, 232, 127, 0.12);
    border-color: var(--er-signal-green);
    color: var(--er-signal-green);
}

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

/* ---------- Tier / system card (category tier-story section) ---------- */
.er-tier-card {
    display: flex;
    flex-direction: column;
    background: var(--er-bg-raised);
    border: 1px solid var(--er-border);
    border-radius: var(--er-radius-lg);
    padding: var(--er-space-6);
    height: 100%;
}

.er-tier-card__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--er-space-3);
    margin-bottom: var(--er-space-4);
}

.er-tier-card__price {
    font-family: var(--er-font-mono);
    color: var(--er-accent-strong);
    font-size: var(--er-text-xl);
}

.er-tier-card__specs {
    display: flex;
    flex-direction: column;
    gap: var(--er-space-1);
    margin-block: var(--er-space-4);
    font-size: var(--er-text-sm);
    color: var(--er-text-dim);
    font-family: var(--er-font-mono);
}

.er-tier-card__actions {
    margin-top: auto;
    display: flex;
    gap: var(--er-space-3);
    flex-wrap: wrap;
    padding-top: var(--er-space-4);
}

/* ---------- Capability snapshot grid (product detail) ---------- */
.er-capability-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0 var(--er-space-6);
}

/* ---------- Per-family category hero motifs ---------- */
.er-category-hero {
    position: relative;
    overflow: hidden;
    min-height: 46vh;
    display: flex;
    align-items: center;
}

/* Gaming — kinetic: faster orbit, warm sweep */
.er-category-hero--gaming-pcs .er-orbit {
    animation-duration: 22s;
}

.er-category-hero--gaming-pcs .er-orbit.er-orbit--reverse {
    animation-duration: 34s;
}

/* Multimedia — cinematic: color bars, slower ambient sweep */
.er-category-hero__colorbars {
    position: absolute;
    inset: auto 0 0 0;
    height: 6px;
}

/* Developer — architecture: restrained grid overlay */
.er-category-hero--developer-rigs .er-category-hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(62, 232, 127, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(62, 232, 127, 0.08) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 40%, black 40%, transparent 100%);
}

/* Founder — restrained: no orbit motion, single slow highlight sweep only */
.er-category-hero--founder-series .er-orbit {
    animation: none;
}

@media (max-width: 900px) {
    .er-tier-card { min-width: 0; }
}

/* ---------- Product hero: two columns down to tablet, stacked on phone ----------
 * Was a fixed inline grid-template-columns with no responsive behavior —
 * stayed 2-column even at 390px, squeezing the image slots to ~130px
 * (Build 005 Gate 12: "product hero reflows intentionally"). */
.er-product-hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--er-space-8);
    align-items: center;
}

@media (max-width: 768px) {
    .er-product-hero-grid {
        grid-template-columns: 1fr;
    }
}