/*!
 * UM Posts Showcase - Frontend Styles
 * Version: 1.0.0
 */

/* CSS Variables */
:root {
    --um-primary-color: #0073aa;
    --um-secondary-color: #005177;
    --um-border-radius: 8px;
    --um-gap: 20px;
    --um-shadow: 0 4px 8px rgba(0,0,0,0.15);
    --um-animation-duration: 600ms;
    --um-animation-easing: ease-out;
    --um-transition: all var(--um-animation-duration) var(--um-animation-easing);
}

/* Main Container */
.um-posts-showcase {
    position: relative;
    width: 100%;
    margin: 0 auto;
}

/* Grid Layout */
.um-grid {
    display: grid;
    grid-template-columns: repeat(var(--um-cols, 3), 1fr);
    gap: var(--um-gap);
    width: 100%;
}

/* Grid Item */
.um-grid-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--um-border-radius);
    box-shadow: var(--um-shadow);
    transition: var(--um-transition);
    background: #fff;
}

.um-grid-item.um-hover-effects:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

/* Post Card */
.um-post-card {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    border-radius: var(--um-border-radius);
    background: #fff;
    transition: var(--um-transition);
}

/* Card Image */
.um-card-image {
    position: relative;
    width: 100%;
    aspect-ratio: var(--um-aspect-ratio, 16/9);
    overflow: hidden;
}

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

.um-post-card:hover .um-card-image img {
    transform: scale(1.05);
}

/* Card Content */
.um-card-content {
    padding: 1.5rem;
    position: relative;
    z-index: 2;
}

/* Card Title */
.um-card-title {
    margin: 0 0 1rem 0;
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
}

.um-card-title a {
    color: inherit;
    text-decoration: none;
    transition: var(--um-transition);
}

.um-card-title a:hover {
    color: var(--um-primary-color);
}

/* Card Excerpt */
.um-card-excerpt {
    margin-bottom: 1rem;
    color: #666;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Card Meta */
.um-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: #888;
}

.um-card-date,
.um-card-author,
.um-card-categories {
    display: inline-block;
}

/* Overlay Template */
.um-template-overlay .um-card-image {
    position: relative;
}

.um-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(0,0,0,0.7), rgba(0,0,0,0.3));
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
    opacity: 0;
    transition: var(--um-transition);
}

.um-post-card:hover .um-card-overlay {
    opacity: 1;
}

.um-template-overlay .um-card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: #fff;
    padding: 2rem 1.5rem 1.5rem;
}

.um-template-overlay .um-card-title a {
    color: #fff;
}

.um-template-overlay .um-card-excerpt {
    color: rgba(255,255,255,0.9);
}

.um-template-overlay .um-card-meta {
    color: rgba(255,255,255,0.8);
}

/* Minimal Template */
.um-template-minimal {
    background: transparent;
    box-shadow: none;
    border: 1px solid #eee;
}

.um-template-minimal .um-card-image {
    display: none;
}

.um-template-minimal .um-card-content {
    padding: 1rem;
}

/* Card Template */
.um-template-card {
    border: 1px solid #eee;
}

.um-template-card .um-card-image {
    border-radius: var(--um-border-radius) var(--um-border-radius) 0 0;
}

/* Slider Layout */
.um-slider {
    position: relative;
    width: 100%;
    overflow: hidden;
}

.um-slider-track {
    display: flex;
    transition: transform var(--um-animation-duration) var(--um-animation-easing);
}

.um-slider-slide {
    flex: 0 0 auto;
    width: calc(100% / 3); /* Default to 3 slides */
    padding: 0 calc(var(--um-gap) / 2);
}

/* Slider Navigation */
.um-slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.9);
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--um-transition);
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.um-slider-arrow:hover {
    background: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.um-slider-arrow-prev {
    left: 1rem;
}

.um-slider-arrow-next {
    right: 1rem;
}

.um-slider-arrow svg {
    width: 24px;
    height: 24px;
    color: var(--um-primary-color);
}

/* Slider Dots */
.um-slider-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.um-slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: #ddd;
    cursor: pointer;
    transition: var(--um-transition);
}

.um-slider-dot:hover,
.um-slider-dot[aria-selected="true"] {
    background: var(--um-primary-color);
}

/* Animations */
.um-animate {
    opacity: 0;
    transform: translateY(20px);
    transition: var(--um-transition);
}

.um-animate.um-animate-fade {
    opacity: 0;
    transform: translateY(20px);
}

.um-animate.um-animate-slide {
    opacity: 0;
    transform: translateX(-30px);
}

.um-animate.um-animate-zoom {
    opacity: 0;
    transform: scale(0.9);
}

.um-animate.um-animate-in {
    opacity: 1;
    transform: translateY(0) translateX(0) scale(1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .um-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .um-slider-slide {
        width: calc(100% / 2);
    }
    
    .um-card-content {
        padding: 1rem;
    }
    
    .um-card-title {
        font-size: 1.1rem;
    }
    
    .um-slider-arrow {
        width: 40px;
        height: 40px;
    }
    
    .um-slider-arrow svg {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 480px) {
    .um-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .um-slider-slide {
        width: 100%;
    }
    
    .um-card-content {
        padding: 0.75rem;
    }
    
    .um-card-title {
        font-size: 1rem;
    }
    
    .um-card-excerpt {
        font-size: 0.9rem;
    }
}

/* Accessibility */
.um-slider-arrow:focus,
.um-slider-dot:focus {
    outline: 2px solid var(--um-primary-color);
    outline-offset: 2px;
}

/* Loading State */
.um-posts-showcase-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
    color: #666;
}

/* Empty State */
.um-posts-showcase-empty {
    text-align: center;
    padding: 2rem;
    color: #666;
    font-style: italic;
}

/* Print Styles */
@media print {
    .um-slider-arrow,
    .um-slider-dots {
        display: none;
    }
    
    .um-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .um-post-card {
        break-inside: avoid;
    }
}