/* Posts Slider Styles */
.posts-slider-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
    position: relative;
    font-family: 'Arial', sans-serif;
}

.posts-slider-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.slider-track {
    display: flex;
    transition: transform 0.5s ease;
    will-change: transform;
}

.slider-item {
    flex: 0 0 auto;
    width: 25%; /* 4개씩 보이도록 */
    padding: 10px;
    box-sizing: border-box;
}

/* 2x2 그리드 레이아웃 */
.posts-slider-wrapper[data-slides-to-show="4"] .slider-item {
    width: 50%;
    height: 50vh;
    min-height: 300px;
}

.posts-slider-wrapper[data-slides-to-show="4"] .slider-track {
    flex-wrap: wrap;
    height: 100vh;
    min-height: 600px;
}

.posts-slider-wrapper[data-slides-to-show="4"] .slider-item:nth-child(n+5) {
    display: none;
}

/* Post Card Styles */
.post-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.post-image {
    position: relative;
    overflow: hidden;
    flex: 1;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

.post-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
    image-rendering: high-quality;
    -ms-interpolation-mode: bicubic;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.post-card:hover .post-image img {
    transform: scale(1.05);
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

.post-content {
    padding: 15px;
    flex-shrink: 0;
}

.post-date {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
    font-size: 12px;
    color: #6b7280;
}

.date-icon {
    font-size: 14px;
}

.post-title {
    margin: 0 0 8px 0;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
}

.post-title a {
    color: #1f2937;
    text-decoration: none;
    transition: color 0.3s ease;
}

.post-title a:hover {
    color: #3b82f6;
}

.post-excerpt {
    margin: 0;
    font-size: 12px;
    color: #6b7280;
    line-height: 1.4;
}

/* Navigation Arrows */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    color: #374151;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    z-index: 10;
}

.slider-nav:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.slider-prev {
    left: 15px;
}

.slider-next {
    right: 15px;
}

.nav-icon {
    line-height: 1;
}

/* Pagination Dots */
.slider-pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 20px 0;
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.pagination-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.pagination-dot:hover,
.pagination-dot.active {
    background: white;
    transform: scale(1.2);
}

/* Loading State */
.posts-slider-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
    font-size: 16px;
    color: #6b7280;
}

/* Error State */
.posts-slider-error {
    text-align: center;
    padding: 40px;
    background: #fee2e2;
    color: #dc2626;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    border: 1px solid #fecaca;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .posts-slider-wrapper[data-slides-to-show="4"] .slider-item {
        width: 50%;
    }
    
    .post-title {
        font-size: 13px;
    }
    
    .post-content {
        padding: 12px;
    }
}

@media (max-width: 768px) {
    .posts-slider-container {
        margin: 20px auto;
        padding: 0 15px;
    }
    
    .posts-slider-wrapper[data-slides-to-show="4"] .slider-item {
        width: 100%;
        height: auto;
    }
    
    .posts-slider-wrapper[data-slides-to-show="4"] .slider-track {
        flex-wrap: nowrap;
        height: auto;
    }
    
    .posts-slider-wrapper[data-slides-to-show="4"] .slider-item:nth-child(n+5) {
        display: block;
    }
    
    .slider-item {
        width: 100% !important;
        padding: 5px;
    }
    
    .post-card {
        flex-direction: row;
        height: auto;
    }
    
    .post-image {
        flex: 0 0 120px;
        height: 120px;
    }
    
    .post-content {
        flex: 1;
    }
    
    .slider-nav {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
    
    .slider-prev {
        left: 10px;
    }
    
    .slider-next {
        right: 10px;
    }
}

@media (max-width: 480px) {
    .posts-slider-container {
        margin: 15px auto;
        padding: 0 10px;
    }
    
    .post-title {
        font-size: 12px;
    }
    
    .post-date,
    .post-excerpt {
        font-size: 11px;
    }
    
    .post-content {
        padding: 10px;
    }
    
    .slider-nav {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }
}

/* Animation for smooth transitions */
@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.slider-item.slide-in-right {
    animation: slideInRight 0.5s ease;
}

.slider-item.slide-in-left {
    animation: slideInLeft 0.5s ease;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .slider-track,
    .post-card,
    .post-image img,
    .slider-nav,
    .pagination-dot {
        transition: none;
    }
    
    .slider-item.slide-in-right,
    .slider-item.slide-in-left {
        animation: none;
    }
}

/* Print Styles */
@media print {
    .posts-slider-container {
        max-width: none;
        margin: 0;
        padding: 0;
    }
    
    .slider-track {
        display: block;
    }
    
    .slider-item {
        width: 50% !important;
        display: inline-block;
        page-break-inside: avoid;
    }
    
    .slider-nav,
    .slider-pagination {
        display: none;
    }
    
    .post-card {
        box-shadow: none;
        border: 1px solid #e5e7eb;
    }
    
    .post-title a {
        color: #1f2937 !important;
    }
}