/**
 * Estilos para controles de categoría
 * Conteo de posts + Filtro por año
 */

.hub-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem 0;
}

/* Conteo de artículos */
.hub-count {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

/* Formulario de filtro */
.hub-filter-form {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.hub-filter-form select {
    padding: 0.5rem 2rem 0.5rem 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--color-gray-light);
    border-radius: 0.375rem;
    background-color: var(--color-bg);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 12px;
    color: var(--color-text);
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.hub-filter-form select:hover {
    border-color: var(--color-gray-mid);
}

.hub-filter-form select:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 2px;
    border-color: var(--color-brand);
}

.hub-filter-form button {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    background-color: var(--color-brand-mid);
    color: var(--color-text-inverse);
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.hub-filter-form button:hover {
    background-color: var(--color-brand);
}

.hub-filter-form button:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 2px;
}

/* Screen reader only */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Responsive */
@media (max-width: 640px) {
    .hub-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .hub-filter-form {
        width: 100%;
    }

    .hub-filter-form select {
        flex: 1;
    }
}

/* Loading state */
#category-content.loading {
    position: relative;
    pointer-events: none;
}

#category-content.loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-bg-subtle);
    border-top-color: var(--color-brand-mid);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    z-index: 10;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* Smooth transitions */
#category-content {
    transition: opacity 0.2s ease-in-out;
}

p.hub-filtered-count {
    margin: 3px auto;
    font-size: var(--font-size-sm);
}

.hub-filter-chip {
    background-color: var(--color-brand-mid);
    font-size: var(--font-size-sm);
    color: var(--color-text-inverse);
    font-weight: var(--font-weight-bold);
    border-radius: 999px;
    padding: .22rem 1rem;
}

/* Dark mode */
html[data-theme="dark"] .hub-filter-form select {
    background-color: var(--color-bg-subtle);
    border-color: var(--color-bg-dark);
    color: var(--color-text);
}

html[data-theme="dark"] #category-content.loading::before {
    border-color: var(--color-bg-subtle);
    border-top-color: var(--color-brand);
}

/* High contrast */
html[data-contrast="high"] .hub-filter-form select {
    background-color: #000000;
    border: 2px solid #ffffff;
    color: #ffffff;
}

html[data-contrast="high"] .hub-filter-chip {
    background-color: #ffffff;
    color: #000000;
}