/**
 * Knowledge Page Styles
 * หน้ารายการบทความความรู้
 */

/* Header */
.knowledge-header {
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    padding: 113px 0 30px 0;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.knowledge-header h1 {
    font-size: 3rem;
    font-weight: 700;
}

.knowledge-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Container */
.knowledge-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px 20px;
  //  background: var(--bg-gray);
}

/* Search and Filter Container */
.search-filter-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 25px;
}

.search-box {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
    width: 100%;
}

.search-box input {
    width: 100%;
    padding: 12px 20px;
    border: 2px solid #1e3ea5;
    border-radius: 0;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

.search-box input::placeholder {
    color: #1e3ea5;
    font-weight: 500;
}

.search-box input:focus {
    border-color: var(--primary-blue);
}

/* Category Filter */
.category-filter-wrapper {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.category-label {
    padding: 10px 20px;
    border: 2px solid #1e3d9d;
    color: #1e3d9d;
    font-weight: 600;
    font-size: 1rem;
    white-space: nowrap;
}

.category-filter {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.category-btn {
    padding: 8px 16px;
    border: 1px solid #9b9b9b;
    background: white;
    color: var(--primary-blue);
    border-radius: 0;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
    text-decoration: none;
}

.category-btn:hover,
.category-btn.active {
    background: var(--primary-blue);
    color: white;
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

/* Article Card */
.article-card {
    background: white;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

.article-card:hover {
    transform: translateY(-5px);
 //   box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
	box-shadow: rgba(0, 0, 0, 0.45) 0px 25px 20px -20px;
}

.article-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
}

.article-content {
    padding: 9px;
    display: flex;
    flex-direction: column;
    flex: 1;
	background: #dfdfdf;
}

.article-category {
    display: inline-block;
    padding: 5px 15px;
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: white;
    font-size: 0.85rem;
}

.article-title {
    font-size: 1rem;
    font-weight: 600;
    margin: 4px 0;
    color: #000000;
	text-align: center;
}

.article-summary {
    color: #64748b;
    line-height: 1.6;
    margin: 10px 0;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 15px;
    border-top: 1px solid #e2e8f0;
    font-size: 0.9rem;
    color: #94a3b8;
}

.read-more {
    color: var(--primary-blue);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

/* PDF Badge */
.knowledge-card-pdfs {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: #eff6ff;
    color: #1e40af;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.knowledge-card-pdfs i {
    font-size: 1rem;
    color: #1e40af;
}

.knowledge-card-pdfs:hover {
    background: #1e40af;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(30, 64, 175, 0.3);
}

.knowledge-card-pdfs:hover i {
    color: white;
}

/* No Articles */
.no-articles {
    text-align: center;
    padding: 60px 20px;
    color: #64748b;
}

/* Loading state */
.articles-grid.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* Result count */
.result-count {
    padding: 10px 15px;
    background: #eff6ff;
    color: #1e40af;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.95rem;
    text-align: center;
}

/* Load More Button */
.load-more-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 30px auto 0;
    padding: 14px 35px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.load-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 64, 175, 0.35);
}

.load-more-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Responsive */
@media (max-width: 768px) {
    .knowledge-header h1 {
        font-size: 2rem;
    }

    .search-box {
        max-width: 100%;
    }

    .category-filter-wrapper {
        flex-direction: column;
        align-items: flex-start;
    }

    .category-filter {
        width: 100%;
    }

    .articles-grid {
        grid-template-columns: 1fr;
    }
}