/* ============================================
   ENGINEERING HUB PAGE
   ============================================ */

/* ---------- Page Hero (Compact) ---------- */
.hub-hero {
    padding: 8rem 2rem 3rem;
    text-align: center;
    border-bottom: 1px solid var(--border-primary);
}

.hub-hero__container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.hub-hero__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.2;
}

.hub-hero__description {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 560px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ---------- Hub Section ---------- */
.hub-section {
    padding: 3rem 2rem 4rem;
}

.hub-section__container {
    max-width: var(--container-width);
    margin: 0 auto;
}

/* ---------- Areas Grid ---------- */
.hub-areas {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

/* ---------- Area Card ---------- */
.hub-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-default);
}

.hub-card:hover {
    border-color: var(--accent-dark);
}

.hub-card__header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.hub-card__icon {
    color: var(--accent-primary);
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.hub-card__title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    line-height: 1.3;
}

.hub-card__description {
    color: var(--text-muted);
    font-size: 0.8rem;
    line-height: 1.5;
}

/* ---------- Filters ---------- */
.hub-card__filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-primary);
}

.hub-filter-btn {
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-primary);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 500;
    transition: all var(--transition-default);
}

.hub-filter-btn:hover {
    border-color: var(--accent-dark);
    color: var(--text-primary);
}

.hub-filter-btn.is-active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.hub-filter-btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* ---------- Series List ---------- */
.hub-card__series {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
    min-height: 200px;
}

.hub-series {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    border: 1px solid transparent;
    transition: all var(--transition-default);
}

.hub-series:hover {
    border-color: var(--border-primary);
    background: rgba(4, 218, 190, 0.03);
}

.hub-series__icon {
    color: var(--accent-dark);
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.hub-series__content {
    flex: 1;
    min-width: 0;
}

.hub-series__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.125rem;
    line-height: 1.4;
}

.hub-series__description {
    color: var(--text-muted);
    font-size: 0.75rem;
    line-height: 1.4;
    margin-bottom: 0.375rem;
}

.hub-series__meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.hub-series__type {
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    background: rgba(4, 218, 190, 0.08);
    border: 1px solid rgba(4, 218, 190, 0.15);
    color: var(--accent-primary);
    font-size: 0.65rem;
    font-weight: 500;
}

.hub-series__count {
    color: var(--text-muted);
    font-size: 0.65rem;
}

.hub-series__link {
    color: var(--accent-primary);
    font-size: 0.75rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: color var(--transition-default);
    flex-shrink: 0;
}

.hub-series__link:hover {
    color: var(--accent-hover);
}

.hub-series__link:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ---------- Card Pagination ---------- */
.hub-card__pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-primary);
}

.hub-pagination-btn {
    min-width: 1.75rem;
    height: 1.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-primary);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.7rem;
    font-weight: 500;
    transition: all var(--transition-default);
    padding: 0 0.375rem;
}

.hub-pagination-btn:hover:not(:disabled) {
    border-color: var(--accent-dark);
    color: var(--text-primary);
}

.hub-pagination-btn.is-active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.hub-pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.hub-pagination-btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

.hub-pagination__info {
    color: var(--text-muted);
    font-size: 0.7rem;
    min-width: 3rem;
    text-align: center;
}

/* ---------- Card States ---------- */
.hub-card__state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    text-align: center;
    color: var(--text-muted);
    min-height: 150px;
}

.hub-card__state-icon {
    margin-bottom: 0.75rem;
    opacity: 0.5;
}

.hub-card__state-text {
    font-size: 0.8rem;
}

/* ---------- Wix Link ---------- */
.hub-wix-link {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-primary);
}

.hub-wix-link__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-primary);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    transition: all var(--transition-default);
}

.hub-wix-link__btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.hub-wix-link__btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* ============================================
   RESPONSIVE — ENGINEERING HUB
   ============================================ */

@media (max-width: 1024px) {
    .hub-areas {
        grid-template-columns: repeat(2, 1fr);
    }

    .hub-hero {
        padding: 7rem 1.5rem 2.5rem;
    }

    .hub-section {
        padding: 2.5rem 1.5rem 3rem;
    }
}

@media (max-width: 768px) {
    .hub-areas {
        grid-template-columns: 1fr;
    }

    .hub-hero {
        padding: 6rem 1rem 2rem;
    }

    .hub-hero__title {
        font-size: 1.5rem;
    }

    .hub-hero__description {
        font-size: 0.875rem;
    }

    .hub-section {
        padding: 2rem 1rem 2.5rem;
    }

    .hub-card {
        padding: 1.25rem;
    }
}