/* Estilos modernos para fichas de anuncios - Inspirado en Backmarket */

/* Variables CSS para consistencia */
:root {
    --primary-color: #059669;
    --primary-hover: #047857;
    --secondary-color: #3b82f6;
    --secondary-hover: #1d4ed8;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --border-hover: #cbd5e0;
    --background-card: #ffffff;
    --background-hover: #f8fafc;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Grid de anuncios */
.ads-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    margin: 0;
    padding: 0;
}

/* Ficha de anuncio moderna */
.ad-card {
    background: var(--background-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: var(--shadow-sm);
}

.ad-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-hover);
}

.ad-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Contenedor de imagen */
.ad-image-container {
    position: relative;
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.ad-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.ad-card:hover .ad-image {
    transform: scale(1.05);
}

/* Placeholder para imágenes */
.ad-no-image {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    font-size: 2.5rem;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
}

.ad-no-image i {
    margin-bottom: 8px;
    opacity: 0.6;
}

/* Badge de precio */
.ad-price-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--primary-color);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: -0.025em;
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow-md);
}

/* Contenido de la ficha */
.ad-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Título del anuncio */
.ad-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.8em;
}

/* Precio principal */
.ad-price {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary-color);
    margin: 0;
    letter-spacing: -0.025em;
}

/* Metadatos del anuncio */
.ad-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: auto;
}

.ad-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.ad-meta-item i {
    font-size: 0.75rem;
    width: 12px;
    text-align: center;
    color: var(--text-muted);
}

/* Estado del producto */
.ad-condition {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: #f0fdf4;
    color: #166534;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.ad-condition.new {
    background: #eff6ff;
    color: #1d4ed8;
}

.ad-condition.used {
    background: #fef3c7;
    color: #92400e;
}

/* Ubicación */
.ad-location {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Fecha de publicación */
.ad-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.8;
}

/* Ficha de anuncio destacado */
.ad-card.featured {
    border: 2px solid #fbbf24;
    position: relative;
}

.ad-card.featured::before {
    content: '⭐ Destacado';
    position: absolute;
    top: 12px;
    left: 12px;
    background: #fbbf24;
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 2;
}

/* Ficha de anuncio promocionado */
.ad-card.promoted {
    border: 2px solid var(--secondary-color);
    position: relative;
}

.ad-card.promoted::before {
    content: '🚀 Promocionado';
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--secondary-color);
    color: white;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 2;
}

/* Estados de hover mejorados */
.ad-card:hover .ad-title {
    color: var(--secondary-color);
}

.ad-card:hover .ad-price {
    color: var(--primary-hover);
}

/* Responsive design */
@media (max-width: 768px) {
    .ads-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 16px;
    }
    
    .ad-content {
        padding: 16px;
    }
    
    .ad-title {
        font-size: 0.9rem;
    }
    
    .ad-price {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .ads-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .ad-image-container {
        height: 180px;
    }
}

/* Fichas de anuncios relacionados */
.related-ads-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 24px;
}

.related-ad-card {
    background: var(--background-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.related-ad-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.related-ad-image {
    height: 140px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.related-ad-content {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.related-ad-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-ad-price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

/* Estilos para listas de anuncios */
.ads-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.ads-list .ad-card {
    display: grid;
    grid-template-columns: 200px 1fr;
    height: auto;
    gap: 0;
}

.ads-list .ad-image-container {
    height: 150px;
    border-bottom: none;
    border-right: 1px solid var(--border-color);
}

.ads-list .ad-content {
    padding: 20px;
}

/* Estados de carga */
.ad-card.loading {
    opacity: 0.6;
    pointer-events: none;
}

.ad-card.loading .ad-image-container {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Mejoras de accesibilidad */
.ad-card:focus-within {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

.ad-link:focus {
    outline: none;
}

/* Animaciones suaves */
.ad-card,
.ad-image,
.ad-title,
.ad-price {
    transition: var(--transition);
}

/* Estilos para categorías */
.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: var(--background-hover);
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: capitalize;
    margin-bottom: 8px;
}

.category-badge i {
    font-size: 0.625rem;
}