/* MSF Filter - Frontend Styles */

.pfb-filter-container {
    --pfb-primary: #1e3a5f;
    --pfb-primary-light: #2d5a8a;
    --pfb-accent: #e67e22;
    --pfb-text: #333;
    --pfb-text-muted: #666;
    --pfb-border: #e0e0e0;
    --pfb-bg: #fff;
    --pfb-bg-muted: #f8f9fa;
    --pfb-radius: 4px;
    --pfb-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* Filter Form */
.pfb-filter-form {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--pfb-bg-muted);
    border-radius: var(--pfb-radius);
    margin-bottom: 2rem;
}

.pfb-filter-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-width: 200px;
    flex: 1;
}

.pfb-filter-field label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--pfb-text);
}

.pfb-filter-select,
.pfb-search-input {
    padding: 0.625rem 1rem;
    font-size: 0.9375rem;
    border: 1px solid var(--pfb-border);
    border-radius: var(--pfb-radius);
    background: var(--pfb-bg);
    color: var(--pfb-text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.pfb-filter-select:focus,
.pfb-search-input:focus {
    outline: none;
    border-color: var(--pfb-primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
}

.pfb-filter-submit {
    padding: 0.625rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #fff;
    background: var(--pfb-primary);
    border: none;
    border-radius: var(--pfb-radius);
    cursor: pointer;
    transition: background 0.2s;
    align-self: flex-end;
}

.pfb-filter-submit:hover {
    background: var(--pfb-primary-light);
}

/* Results Container */
.pfb-results {
    position: relative;
    min-height: 200px;
}

.pfb-results.pfb-loading {
    opacity: 0.6;
    pointer-events: none;
}

.pfb-results.pfb-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 40px;
    height: 40px;
    margin: -20px 0 0 -20px;
    border: 3px solid var(--pfb-border);
    border-top-color: var(--pfb-primary);
    border-radius: 50%;
    animation: pfb-spin 0.8s linear infinite;
}

@keyframes pfb-spin {
    to { transform: rotate(360deg); }
}

/* Results Grid */
.pfb-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Result Item */
.pfb-result-item {
    display: flex;
    flex-direction: column;
    background: var(--pfb-bg);
    border: 1px solid var(--pfb-border);
    border-radius: var(--pfb-radius);
    overflow: hidden;
    transition: box-shadow 0.2s, transform 0.2s;
}

.pfb-result-item:hover {
    box-shadow: var(--pfb-shadow);
    transform: translateY(-2px);
}

.pfb-result-image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.pfb-result-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.pfb-result-item:hover .pfb-result-image img {
    transform: scale(1.05);
}

.pfb-result-content {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
}

.pfb-result-title {
    margin: 0;
    font-size: 1.125rem;
    line-height: 1.4;
}

.pfb-result-title a {
    color: var(--pfb-text);
    text-decoration: none;
    transition: color 0.2s;
}

.pfb-result-title a:hover {
    color: var(--pfb-primary);
}

.pfb-result-excerpt {
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--pfb-text-muted);
}

/* Cross-site Links */
.pfb-cross-site-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
    padding-top: 0.75rem;
    border-top: 1px solid var(--pfb-border);
    font-size: 0.8125rem;
}

.pfb-cross-site-label {
    color: var(--pfb-text-muted);
}

.pfb-cross-site-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: var(--pfb-bg-muted);
    border-radius: var(--pfb-radius);
    color: var(--pfb-primary);
    text-decoration: none;
    transition: background 0.2s;
}

.pfb-cross-site-link:hover {
    background: var(--pfb-border);
}

.pfb-cross-site-link svg {
    flex-shrink: 0;
}

/* Pagination */
.pfb-pagination {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--pfb-border);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.pfb-pagination-info {
    font-size: 0.875rem;
    color: var(--pfb-text-muted);
}

.pfb-pagination-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    align-items: center;
}

.pfb-pagination-links a,
.pfb-pagination-links span {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    border-radius: var(--pfb-radius);
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}

.pfb-page-num {
    min-width: 2.5rem;
    text-align: center;
}

.pfb-pagination-links a {
    color: var(--pfb-primary);
    background: var(--pfb-bg);
    border: 1px solid var(--pfb-border);
}

.pfb-pagination-links a:hover {
    background: var(--pfb-primary);
    border-color: var(--pfb-primary);
    color: #fff;
}

.pfb-page-current {
    background: var(--pfb-primary);
    color: #fff;
    border: 1px solid var(--pfb-primary);
}

.pfb-page-dots {
    color: var(--pfb-text-muted);
}

.pfb-page-prev,
.pfb-page-next {
    font-weight: 600;
}

/* No Results / Error */
.pfb-no-results,
.pfb-error {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--pfb-text-muted);
    font-size: 1rem;
}

.pfb-error {
    color: #c0392b;
}

/* Responsive */
@media (max-width: 768px) {
    .pfb-filter-form {
        flex-direction: column;
    }

    .pfb-filter-field {
        width: 100%;
    }

    .pfb-filter-submit {
        width: 100%;
    }

    .pfb-results-grid {
        grid-template-columns: 1fr;
    }

    .pfb-pagination {
        text-align: center;
    }

    .pfb-pagination-links {
        justify-content: center;
    }
}

/* Filter Group Labels */
.pfb-filter-group-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pfb-text-muted);
    margin-top: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--pfb-border);
    width: 100%;
}

.pfb-filter-group-label:first-child {
    margin-top: 0;
}