/**
 * RACERS News Hub - Frontend Styles
 */

.racers-news-hub {
    --nh-primary: #1c1f26;
    --nh-secondary: #36abfc;
    --nh-gray: #6c757d;
    --nh-light: #f8f9fa;
    --nh-border: #dee2e6;
}

/* Filters */
.racers-nh-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--nh-border);
}

.racers-nh-filter {
    padding: 8px 16px;
    border: 1px solid var(--nh-border);
    border-radius: 4px;
    background: #fff;
    color: var(--nh-gray);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.racers-nh-filter:hover {
    border-color: var(--nh-secondary);
    color: var(--nh-secondary);
}

.racers-nh-filter.active {
    background: var(--nh-primary);
    border-color: var(--nh-primary);
    color: #fff;
}

/* Grid */
.racers-nh-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

/* Card */
.racers-nh-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid var(--nh-border);
    border-radius: 8px;
    overflow: hidden;
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.racers-nh-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.racers-nh-card.hidden {
    display: none;
}

/* Card Image */
.racers-nh-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--nh-light);
}

.racers-nh-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.racers-nh-card:hover .racers-nh-card-image img {
    transform: scale(1.05);
}

/* Card Content */
.racers-nh-card-content {
    flex: 1;
    padding: 16px;
}

/* Source Line */
.racers-nh-card-source {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 12px;
    color: var(--nh-gray);
}

.racers-nh-favicon {
    width: 16px;
    height: 16px;
    border-radius: 2px;
    flex-shrink: 0;
}

.racers-nh-site-name {
    font-weight: 600;
    color: var(--nh-primary);
}

.racers-nh-date {
    margin-left: auto;
    white-space: nowrap;
}

/* Title */
.racers-nh-card-title {
    margin: 0 0 8px 0;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
}

.racers-nh-card-title a {
    color: var(--nh-primary);
    text-decoration: none;
}

.racers-nh-card-title a:hover {
    color: var(--nh-secondary);
}

/* Excerpt */
.racers-nh-card-excerpt {
    margin: 0;
    font-size: 14px;
    line-height: 1.5;
    color: var(--nh-gray);
}

/* Footer */
.racers-nh-card-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--nh-border);
    background: var(--nh-light);
}

.racers-nh-external-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--nh-gray);
}

.racers-nh-external-indicator svg {
    opacity: 0.7;
}

/* Empty State */
.racers-nh-empty {
    text-align: center;
    padding: 40px;
    color: var(--nh-gray);
    font-style: italic;
}

/* Responsive */
@media (max-width: 640px) {
    .racers-nh-grid {
        grid-template-columns: 1fr;
    }

    .racers-nh-filters {
        gap: 6px;
    }

    .racers-nh-filter {
        padding: 6px 12px;
        font-size: 13px;
    }
}