/* Posts Page Styles - University of Perpetual Help System */

:root {
    --primary-color: #1c4da1;
    --secondary-color: #143980;
    --tertiary-color: #527bbd;
    --alt-color-1: #ffc63e;
    --alt-color-2: #e0b03c;
    --text-dark: #2a2a2a;
    --text-light: #94a3b8;
}

.posts-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    margin-top: 50px;
    font-family: 'Montserrat', sans-serif;
}

.posts-header {
    text-align: center;
    margin-bottom: 50px;
    padding-bottom: 30px;
    border-bottom: 3px solid var(--primary-color);
}

.posts-title {
    font-family: 'Barlow Semi Condensed', sans-serif;
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.posts-title i {
    color: var(--alt-color-1);
    font-size: 2.5rem;
}

.posts-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    font-weight: 500;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .posts-subtitle {
        font-size: 0.9rem;
        line-height: 1.5;
        padding: 0 10px;
    }
}

@media (max-width: 480px) {
    .posts-subtitle {
        font-size: 0.85rem;
        line-height: 1.4;
    }
}

.posts-content {
    width: 100%;
}


/* Posts Filter System */
.posts-filter {
    background: white;
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 15px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    border: 1px solid #e5e7eb;
}

.filter-form {
    width: 100%;
}

.filter-row-main {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.filter-row {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.search-group {
    flex: 2;
    min-width: 180px;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input-wrapper i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 0.875rem;
    z-index: 2;
    pointer-events: none;
}

.search-input-wrapper input {
    width: 100%;
    padding: 0.5rem 0.75rem 0.5rem 2.5rem;
    border: 1px solid #e2e8f0;
    border-radius: 5px;
    font-size: 0.875rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 400;
    transition: all 0.3s ease;
    background: #f8fafc;
}

.search-input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 3px rgba(28, 77, 161, 0.1);
}

.filter-group {
    min-width: 130px;
}

.filter-group select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #e2e8f0;
    border-radius: 5px;
    font-size: 0.85rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 400;
    background: #f8fafc;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 3px rgba(28, 77, 161, 0.1);
}

.filter-group input[type="date"] {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #e2e8f0;
    border-radius: 5px;
    font-size: 0.85rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 400;
    background: #f8fafc;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-group input[type="date"]:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 3px rgba(28, 77, 161, 0.1);
}

.filter-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* Filter Toggle Button */
.filter-toggle-btn {
    display: none;
    width: 100%;
    padding: 0.5rem;
    background: #f8f9fa;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    margin-bottom: 0.75rem;
    font-size: 0.8125rem;
    color: var(--text-dark);
    transition: all 0.3s ease;
    font-family: 'Barlow Semi Condensed', sans-serif;
}

.filter-toggle-btn:hover {
    background: #e9ecef;
    border-color: var(--primary-color);
}

.filter-toggle-btn.active .filter-toggle-icon {
    transform: rotate(180deg);
}

/* Collapsible Filter Row */
.filter-row-collapsible {
    transition: max-height 0.3s ease, opacity 0.3s ease;
}

/* Default: visible on desktop */
@media (min-width: 769px) {
    .filter-row-collapsible {
        max-height: none !important;
        opacity: 1 !important;
        overflow: visible !important;
        display: flex !important;
    }
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 0.85rem;
    font-family: 'Barlow Semi Condensed', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(28, 77, 161, 0.3);
}

.clear-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    background: #f8fafc;
    color: var(--text-dark);
    border: 1px solid #e2e8f0;
    border-radius: 5px;
    text-decoration: none;
    font-size: 0.85rem;
    font-family: 'Barlow Semi Condensed', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.clear-btn:hover {
    background: #e2e8f0;
    border-color: var(--text-light);
    transform: translateY(-2px);
}

/* AJAX Search Results */
#searchResults {
    transition: opacity 0.3s ease;
}

#searchResults.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Loading animation for search */
@keyframes searchPulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.search-loading {
    animation: searchPulse 1.5s ease-in-out infinite;
}

/* Posts Grid - News Stand Layout */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.post-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e5e7eb;
    transition: all 0.3s ease;
    position: relative;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.post-card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.post-card-image.loading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading-shimmer 1.5s infinite;
    z-index: 1;
}

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

.card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease, opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    will-change: opacity;
}

.card-image.loaded {
    opacity: 1;
}

/* Removed .loaded class - images are now visible by default */

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

.card-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--tertiary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.post-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.read-more-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--alt-color-1);
    color: white;
    border-radius: 50%;
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.read-more-btn:hover {
    background: var(--alt-color-2);
    transform: scale(1.1);
}

.post-card-content {
    padding: 25px;
}

.post-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.post-card-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.post-card-meta i {
    color: var(--primary-color);
    width: 14px;
}

.post-card-title {
    font-family: 'Barlow Semi Condensed', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 15px;
    line-height: 1.4;
}

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

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

.post-card-excerpt {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.post-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #f1f5f9;
}

.post-stats {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 0.75rem;
    color: var(--text-light);
}

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

.post-views i {
    color: var(--primary-color);
}

.read-more-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: all 0.3s ease;
}

.read-more-link:hover {
    color: var(--secondary-color);
    transform: translateX(3px);
}

/* Pagination */
.pagination-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-top: 50px;
}

.pagination {
    display: flex;
    align-items: center;
    gap: 10px;
    background: white;
    padding: 15px 25px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e5e7eb;
}

.pagination-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.pagination-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.pagination-numbers {
    display: flex;
    align-items: center;
    gap: 5px;
}

.pagination-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #f8fafc;
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.pagination-number:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.pagination-number.active {
    background: var(--primary-color);
    color: white;
}

.pagination-ellipsis {
    color: var(--text-light);
    font-weight: 600;
}

.pagination-info {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Empty State */
.empty-posts {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e5e7eb;
}

.empty-posts-content {
    text-align: center;
    color: var(--text-light);
}

.empty-posts-content i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-posts-content h3 {
    font-family: 'Barlow Semi Condensed', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.empty-posts-content p {
    margin-bottom: 25px;
    line-height: 1.6;
}


/* Responsive Design */
@media (max-width: 1024px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .filter-row-main {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .filter-row {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .search-group {
        min-width: auto;
        flex: 1;
        margin-bottom: 0.75rem;
        width: 100%;
    }
    
    .filter-group {
        min-width: auto;
    }
    
    .filter-actions {
        justify-content: center;
        flex-direction: row;
        gap: 8px;
    }
    
    .filter-btn, .clear-btn {
        flex: 1;
        justify-content: center;
        padding: 10px 12px;
        font-size: 0.8rem;
    }
}

@media (max-width: 768px) {
    .posts-container {
        padding: 20px 15px;
        margin-top: 50px;
    }
    
    .posts-title {
        font-size: 2rem;
        flex-direction: column;
        gap: 10px;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .posts-filter {
        padding: 0.75rem !important;
    }

    .filter-toggle-btn {
        display: block !important;
    }

    .posts-filter .filter-row-main {
        flex-direction: column !important;
        gap: 0 !important;
    }

    .posts-filter .search-group {
        margin-bottom: 0.5rem !important;
        width: 100% !important;
    }

    .posts-filter .filter-row-collapsible {
        display: flex !important;
        flex-direction: column !important;
        gap: 0.625rem !important;
        max-height: 0;
        opacity: 0;
        overflow: hidden;
        margin: 0;
        padding: 0;
        width: 100% !important;
    }

    .posts-filter .filter-row-collapsible.expanded {
        max-height: 2000px;
        opacity: 1;
        margin-bottom: 0;
        padding: 0;
    }

    .posts-filter .filter-group {
        width: 100% !important;
    }

    .posts-filter .filter-group select,
    .posts-filter .filter-group input[type="date"] {
        width: 100% !important;
        padding: 0.5rem !important;
        font-size: 0.8125rem !important;
        font-family: 'Montserrat', sans-serif !important;
    }

    .posts-filter .search-input-wrapper input {
        padding: 0.5rem 0.75rem 0.5rem 2.5rem !important;
        font-size: 0.875rem !important;
        font-family: 'Montserrat', sans-serif !important;
    }

    .posts-filter .search-input-wrapper i {
        left: 12px !important;
        font-size: 0.875rem !important;
    }

    .posts-filter .filter-actions {
        width: 100%;
        display: flex;
        gap: 0.5rem;
        margin-top: 0.25rem;
    }

    .posts-filter .filter-btn,
    .posts-filter .clear-btn {
        flex: 1;
        padding: 0.5625rem 1rem !important;
        font-size: 0.8125rem !important;
        font-family: 'Barlow Semi Condensed', sans-serif !important;
    }
    
    .post-card-content {
        padding: 20px;
    }
    
    .post-card-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .pagination {
        flex-direction: column;
        gap: 15px;
        padding: 20px;
    }
    
    .pagination-numbers {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .quick-links-container {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    
    .quick-links-nav .quick-link {
        min-width: 150px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .posts-title {
        font-size: 1.5rem;
    }
    
    .posts-filter {
        padding: 0.625rem !important;
    }

    .filter-toggle-btn {
        padding: 0.4375rem !important;
        font-size: 0.75rem !important;
        margin-bottom: 0.5rem !important;
    }

    .posts-filter .filter-row-collapsible {
        gap: 0.5rem !important;
    }

    .posts-filter .filter-group select,
    .posts-filter .filter-group input[type="date"] {
        padding: 0.5rem !important;
        font-size: 0.75rem !important;
    }

    .posts-filter .search-input-wrapper input {
        padding: 0.5rem 0.75rem 0.5rem 2.5rem !important;
        font-size: 0.75rem !important;
    }

    .posts-filter .search-input-wrapper i {
        left: 12px !important;
        font-size: 0.8125rem !important;
    }

    .posts-filter .filter-actions {
        gap: 0.5rem;
    }

    .posts-filter .filter-btn,
    .posts-filter .clear-btn {
        padding: 0.5rem 0.875rem !important;
        font-size: 0.75rem !important;
    }
    
    .post-card-content {
        padding: 15px;
    }
    
    .post-card-title {
        font-size: 1.1rem;
    }
    
    .pagination-number {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }
    
    .pagination-btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
}