/**
 * Shortcode Styles - Horizontal Scrollable Post Cards
 * Material UI + Tailwind Design Principles
 * Ultra-lightweight & Performant
 */

/* Container */
.er-posts-wrapper {
    position: relative;
    margin: 32px 0;
    padding: 0 48px;
}

.er-posts-container {
    overflow: hidden;
    border-radius: 12px;
}

.er-posts-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    scroll-behavior: smooth;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
    padding: 4px;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.er-posts-scroll::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

/* Post Card */
.er-post-card {
    flex: 0 0 auto;
    width: 340px;
    background: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.er-post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* Dynamic card width based on columns */
.er-posts-wrapper[data-columns="2"] .er-post-card { width: calc(50% - 10px); }
.er-posts-wrapper[data-columns="3"] .er-post-card { width: calc(33.333% - 14px); }
.er-posts-wrapper[data-columns="4"] .er-post-card { width: calc(25% - 15px); }
.er-posts-wrapper[data-columns="5"] .er-post-card { width: calc(20% - 16px); }
.er-posts-wrapper[data-columns="6"] .er-post-card { width: calc(16.666% - 17px); }

/* Card Image */
.er-card-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: #f5f5f5;
}

.er-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.er-card-image a {
    display: block;
    height: 100%;
}

/* Card Content */
.er-card-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Category Badge */
.er-card-category {
    margin-bottom: 12px;
}

.er-category-badge {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-size: 12px;
    font-weight: 600;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Card Title */
.er-card-title {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 0 12px;
    color: #212121;
}

.er-card-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.er-card-title a:hover {
    color: #1976d2;
}

/* Card Excerpt */
.er-card-excerpt {
    font-size: 14px;
    line-height: 1.6;
    color: #757575;
    margin-bottom: 16px;
    flex: 1;
}

/* Card Meta */
.er-card-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-top: 12px;
    border-top: 1px solid #e0e0e0;
    font-size: 13px;
    color: #9e9e9e;
    margin-top: auto;
}

.er-card-date,
.er-card-author {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.er-card-meta .er-icon {
    width: 14px;
    height: 14px;
    opacity: 0.6;
}

/* Navigation Arrows */
.er-nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: white;
    border: none;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    pointer-events: none;
}

.er-posts-wrapper:hover .er-nav-arrow {
    opacity: 1;
    pointer-events: auto;
}

.er-nav-prev {
    left: 0;
}

.er-nav-next {
    right: 0;
}

.er-nav-arrow:hover {
    background: #1976d2;
    transform: translateY(-50%) scale(1.1);
}

.er-nav-arrow:hover svg {
    stroke: white;
}

.er-nav-arrow:active {
    transform: translateY(-50%) scale(0.95);
}

.er-nav-arrow svg {
    stroke: #212121;
    transition: stroke 0.3s ease;
}

.er-nav-arrow:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

/* No Posts Message */
.er-no-posts {
    text-align: center;
    padding: 48px 24px;
    color: #757575;
    font-size: 16px;
}

/* Responsive Breakpoints - Mobile First */
@media (max-width: 1200px) {
    .er-posts-wrapper[data-columns="5"] .er-post-card,
    .er-posts-wrapper[data-columns="6"] .er-post-card {
        width: calc(25% - 15px);
    }
}

@media (max-width: 992px) {
    .er-posts-wrapper[data-columns="4"] .er-post-card,
    .er-posts-wrapper[data-columns="5"] .er-post-card,
    .er-posts-wrapper[data-columns="6"] .er-post-card {
        width: calc(33.333% - 14px);
    }
}

@media (max-width: 768px) {
    .er-posts-wrapper {
        padding: 0 32px;
    }
    
    .er-post-card,
    .er-posts-wrapper[data-columns] .er-post-card {
        width: calc(50% - 10px);
        min-width: 280px;
    }
    
    .er-card-image {
        height: 180px;
    }
    
    .er-nav-arrow {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 640px) {
    .er-posts-wrapper {
        padding: 0 16px;
    }
    
    .er-post-card,
    .er-posts-wrapper[data-columns] .er-post-card {
        width: 85%;
        min-width: 260px;
    }
    
    .er-card-content {
        padding: 16px;
    }
    
    .er-card-title {
        font-size: 16px;
    }
    
    .er-card-excerpt {
        font-size: 13px;
    }
    
    .er-nav-arrow {
        opacity: 1;
        pointer-events: auto;
    }
}

@media (max-width: 480px) {
    .er-posts-wrapper {
        padding: 0 8px;
    }
    
    .er-post-card,
    .er-posts-wrapper[data-columns] .er-post-card {
        width: 90%;
        min-width: 240px;
    }
    
    .er-card-image {
        height: 160px;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .er-posts-scroll,
    .er-post-card,
    .er-card-image img,
    .er-nav-arrow {
        transition: none;
    }
}

/* Loading State (Optional Enhancement) */
.er-posts-wrapper.er-loading .er-post-card {
    opacity: 0.6;
    pointer-events: none;
}

/* Print Styles */
@media print {
    .er-nav-arrow {
        display: none;
    }
    
    .er-posts-scroll {
        flex-wrap: wrap;
    }
}