/* Variables */
:root {
    --primary-orange: #f97316;
    --primary-blue: #1e40af;
    --secondary-blue: #2563eb;
    --text-black: #000000;
    --text-gray: #666666;
    --background-white: #ffffff;
    --background-gray: #f3f3f3;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --modal-overlay: rgba(0, 0, 0, 0.9);
    --card-radius: 12px;
    --transition-speed: 0.3s;
}

/* Reset & Base Styles */
.event-post-container * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Main Container */
.event-post-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

/* Grid Layout */
.event-post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

/* Card Item */
.event-post-item {
    background: var(--background-white);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    cursor: pointer;
    text-decoration: none;
    display: block;
}

.event-post-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px var(--shadow-color);
}


/* Image Container */
.event-post-image-container {
    position: relative;
    width: 100%;
    height: 240px; /* กำหนดความสูงที่แน่นอน */
    overflow: hidden;
    background: var(--background-gray);
}

.event-post-image,
.event-post-slideshow img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover; /* ทำให้ภาพ scale พอดีกับพื้นที่ */
}

.event-post-slideshow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

.event-post-item:hover .event-post-image {
    opacity: 0;
}

.event-post-item:hover .event-post-slideshow {
    opacity: 1;
}

/* Content Area */
.event-post-content {
    padding: 16px;
    background: var(--background-white);
}

.event-post-title {
    color: var(--text-black);
    font-size: 1.1rem;
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    height: 2.8em; /* 2 บรรทัด */
}

/* ทำให้ลิงก์ทั้ง Card คลิกได้ */
.event-post-item-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.event-post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.event-post-date {
    display: flex;
    align-items: center;
    gap: 5px;
}

.event-post-count {
    color: var(--primary-blue);
    cursor: pointer;
    transition: color var(--transition-speed) ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    position: relative;
    z-index: 2;
}

.event-post-count:hover {
    color: var(--primary-orange);
}

.event-post-count::before {
    content: '🖼';
    font-size: 1.1em;
}

.event-post-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.event-post-category {
    background: var(--primary-blue);
    color: var(--background-white);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    transition: all var(--transition-speed) ease;
    cursor: pointer;
}

.event-post-category:hover {
    background: var(--primary-orange);
    transform: translateY(-2px);
}

/* Modal */
.event-post-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--modal-overlay);
    z-index: 1000;
    backdrop-filter: blur(3px);
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 1200px;
    margin: 50px auto;
    padding: 20px;
    animation: modalFadeIn var(--transition-speed) ease-out;
}

.modal-close {
    position: absolute;
    right: 20px;
    top: 0;
    color: var(--background-white);
    font-size: 30px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transition: background var(--transition-speed) ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.modal-gallery-item {
    position: relative;
    padding-top: 100%;
    border-radius: 8px;
    overflow: hidden;
}

.modal-thumbnail {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    cursor: pointer;
    transition: transform var(--transition-speed) ease;
}

.modal-thumbnail:hover {
    transform: scale(1.05);
}

/* Skeleton Loading */
.event-post-skeleton {
    background: var(--background-white);
    border-radius: var(--card-radius);
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow-color);
}

.skeleton-img {
    width: 100%;
    padding-top: 66.67%;
    background: linear-gradient(90deg, 
        var(--background-gray) 25%, 
        #e0e0e0 50%, 
        var(--background-gray) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.skeleton-content {
    padding: 20px;
}

.skeleton-title {
    height: 24px;
    background: linear-gradient(90deg, 
        var(--background-gray) 25%, 
        #e0e0e0 50%, 
        var(--background-gray) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    margin-bottom: 10px;
    border-radius: 4px;
}

.skeleton-meta {
    height: 16px;
    width: 60%;
    background: linear-gradient(90deg, 
        var(--background-gray) 25%, 
        #e0e0e0 50%, 
        var(--background-gray) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    margin-bottom: 10px;
    border-radius: 4px;
}

.skeleton-category {
    height: 16px;
    width: 40%;
    background: linear-gradient(90deg, 
        var(--background-gray) 25%, 
        #e0e0e0 50%, 
        var(--background-gray) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

/* Animations */
@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Loading Spinner */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--background-gray);
    border-top: 4px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Focus States */
.event-post-count:focus,
.modal-close:focus,
.modal-thumbnail:focus {
    outline: 2px solid var(--primary-orange);
    outline-offset: 2px;
}

/* ปรับขนาด Grid ให้เหมาะสม */
.event-post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    padding: 16px;
}

/* Responsive Design */
@media screen and (max-width: 1024px) {
    .event-post-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 20px;
    }
    
    .modal-gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media screen and (max-width: 768px) {
    .event-post-container {
        padding: 15px;
    }
    
    .event-post-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 15px;
    }
    
    .modal-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .event-post-image-container {
        height: 200px; /* ปรับขนาดให้เล็กลงบนมือถือ */
    }
    
    .event-post-title {
        font-size: 1rem;
    }
    
    .event-post-meta {
        font-size: 0.8rem;
    }
    
    .event-post-category {
        font-size: 0.75rem;
        padding: 3px 10px;
    }
    
    .modal-content {
        margin: 30px auto;
    }

    /* Modal Image Size */
    .modal-gallery-item {
        position: relative;
        padding-top: 75%; /* อัตราส่วน 4:3 */
    }

    .modal-thumbnail {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
}

@media screen and (max-width: 480px) {
    .event-post-container {
        padding: 10px;
    }

    .event-post-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .modal-gallery-grid {
        gap: 8px;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px auto;
        padding: 15px;
    }
    
    .event-post-content {
        padding: 15px;
    }

    .modal-close {
        right: 10px;
        top: -40px;
    }
}

/* Print Styles */
@media print {
    .event-post-container {
        padding: 0;
    }
    
    .event-post-item {
        break-inside: avoid;
        box-shadow: none;
    }
    
    .event-post-count,
    .modal-close,
    .event-post-slideshow {
        display: none;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .event-post-item,
    .event-post-category,
    .modal-thumbnail,
    .loading-spinner,
    .modal-content,
    .event-post-slideshow,
    .event-post-image {
        animation: none;
        transition: none;
    }
    
    .skeleton-img,
    .skeleton-title,
    .skeleton-meta,
    .skeleton-category {
        animation: none;
    }
}