/**
 * SN Knowledge Base Styles
 */

/* ── Variables ── */
:root {
    --kb-max-width: 800px;
    --kb-wide-width: 1100px;
    --kb-accent: #2c6ecb;
    --kb-accent-hover: #1a5bb5;
    --kb-bg: #f8f9fa;
    --kb-card-bg: #ffffff;
    --kb-text: #1a1a2e;
    --kb-text-secondary: #555;
    --kb-text-muted: #888;
    --kb-border: #e0e0e0;
    --kb-green: #27ae60;
    --kb-radius: 8px;
}

/* ── Archive Page ── */
.sn-kb-archive-wrap {
    max-width: var(--kb-wide-width);
    margin: 0 auto;
    padding: 40px 20px 60px;
}

.sn-kb-archive-header {
    text-align: center;
    margin-bottom: 32px;
}

.sn-kb-archive-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--kb-text);
    margin: 0 0 8px;
}

.sn-kb-archive-desc {
    font-size: 1.05rem;
    color: var(--kb-text-secondary);
    max-width: 600px;
    margin: 0 auto 24px;
    line-height: 1.6;
}

/* Search */
.sn-kb-search-wrap {
    max-width: 480px;
    margin: 0 auto;
}

.sn-kb-search {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--kb-card-bg);
    border: 2px solid var(--kb-border);
    border-radius: 40px;
    padding: 10px 18px;
    transition: border-color 0.2s;
}

.sn-kb-search:focus-within {
    border-color: var(--kb-accent);
    box-shadow: 0 0 0 3px rgba(44, 110, 203, 0.1);
}

.sn-kb-search svg {
    flex-shrink: 0;
    color: var(--kb-text-muted);
    margin-right: 10px;
}

.sn-kb-search input {
    flex: 1;
    border: none;
    outline: none;
    font-size: 15px;
    background: transparent;
    color: var(--kb-text);
}

.sn-kb-search input::placeholder {
    color: var(--kb-text-muted);
}

.sn-kb-search-results {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: var(--kb-card-bg);
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    max-height: 320px;
    overflow-y: auto;
    z-index: 100;
}

.sn-kb-search-result {
    display: block;
    padding: 12px 16px;
    border-bottom: 1px solid var(--kb-border);
    text-decoration: none;
    color: var(--kb-text);
    transition: background 0.1s;
}

.sn-kb-search-result:last-child {
    border-bottom: none;
}

.sn-kb-search-result:hover {
    background: var(--kb-bg);
}

.sn-kb-search-result-title {
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 2px;
}

.sn-kb-search-result-excerpt {
    font-size: 12px;
    color: var(--kb-text-muted);
}

.sn-kb-search-result-cat {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--kb-accent);
}

/* Category Pills */
.sn-kb-categories {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 32px;
}

.sn-kb-cat-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--kb-border);
    background: var(--kb-card-bg);
    color: var(--kb-text-secondary);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.15s;
}

.sn-kb-cat-pill:hover {
    border-color: var(--kb-accent);
    color: var(--kb-accent);
}

.sn-kb-cat-pill.active {
    background: var(--kb-accent);
    border-color: var(--kb-accent);
    color: #fff;
}

.sn-kb-cat-count {
    font-size: 11px;
    opacity: 0.6;
}

/* Articles Grid */
.sn-kb-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.sn-kb-card {
    display: flex;
    flex-direction: column;
    background: var(--kb-card-bg);
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    overflow: hidden;
    text-decoration: none;
    color: var(--kb-text);
    transition: box-shadow 0.2s, transform 0.2s;
}

.sn-kb-card:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    transform: translateY(-2px);
}

.sn-kb-card-img {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--kb-bg);
}

.sn-kb-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sn-kb-card-body {
    padding: 16px 20px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.sn-kb-card-cat {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--kb-accent);
    margin-bottom: 6px;
}

.sn-kb-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.3;
    margin: 0 0 8px;
    color: var(--kb-text);
}

.sn-kb-card-excerpt {
    font-size: 13px;
    color: var(--kb-text-secondary);
    line-height: 1.5;
    margin: 0;
    flex: 1;
}

.sn-kb-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--kb-border);
    font-size: 12px;
}

.sn-kb-card-time {
    color: var(--kb-text-muted);
}

.sn-kb-card-link {
    color: var(--kb-accent);
    font-weight: 600;
}

/* ── Single Article ── */
.sn-kb-article-wrap {
    max-width: var(--kb-max-width);
    margin: 0 auto;
    padding: 30px 20px 60px;
}

/* Breadcrumb */
.sn-kb-breadcrumb {
    font-size: 13px;
    color: var(--kb-text-muted);
    margin-bottom: 24px;
}

.sn-kb-breadcrumb a {
    color: var(--kb-text-secondary);
    text-decoration: none;
}

.sn-kb-breadcrumb a:hover {
    color: var(--kb-accent);
}

.sn-kb-sep {
    margin: 0 6px;
    color: var(--kb-border);
}

.sn-kb-current {
    color: var(--kb-text);
    font-weight: 500;
}

/* Header */
.sn-kb-header {
    margin-bottom: 28px;
}

.sn-kb-category-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 14px;
    background: rgba(44, 110, 203, 0.08);
    color: var(--kb-accent);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.sn-kb-title {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--kb-text);
    margin: 0 0 12px;
}

.sn-kb-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 13px;
    color: var(--kb-text-muted);
}

.sn-kb-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.sn-kb-meta svg {
    color: var(--kb-text-muted);
}

/* At a Glance */
.sn-kb-at-a-glance {
    background: linear-gradient(135deg, #eef6ff 0%, #f0f4ff 100%);
    border: 1px solid #c8ddf5;
    border-radius: var(--kb-radius);
    padding: 20px 24px;
    margin-bottom: 28px;
}

.sn-kb-at-a-glance h4 {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0 0 10px;
    font-size: 14px;
    font-weight: 700;
    color: var(--kb-accent);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.sn-kb-at-a-glance ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sn-kb-at-a-glance li {
    padding: 4px 0 4px 20px;
    position: relative;
    font-size: 14px;
    line-height: 1.6;
    color: var(--kb-text);
}

.sn-kb-at-a-glance li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 12px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--kb-accent);
}

/* Table of Contents */
.sn-kb-toc {
    background: var(--kb-bg);
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    padding: 18px 24px;
    margin-bottom: 28px;
}

.sn-kb-toc h4 {
    margin: 0 0 10px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--kb-text-muted);
}

.sn-kb-toc ol {
    margin: 0;
    padding-left: 20px;
}

.sn-kb-toc li {
    padding: 3px 0;
    font-size: 14px;
}

.sn-kb-toc a {
    color: var(--kb-text-secondary);
    text-decoration: none;
}

.sn-kb-toc a:hover {
    color: var(--kb-accent);
}

/* Content */
.sn-kb-content {
    font-size: 16px;
    line-height: 1.75;
    color: var(--kb-text);
    margin-bottom: 28px;
}

.sn-kb-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 36px 0 14px;
    padding-top: 20px;
    border-top: 1px solid var(--kb-border);
    color: var(--kb-text);
}

.sn-kb-content h2:first-child {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}

.sn-kb-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 24px 0 10px;
    color: var(--kb-text);
}

.sn-kb-content p {
    margin: 0 0 16px;
}

.sn-kb-content ul, .sn-kb-content ol {
    margin: 0 0 16px;
    padding-left: 24px;
}

.sn-kb-content li {
    margin-bottom: 6px;
}

.sn-kb-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--kb-radius);
    margin: 16px 0;
}

/* Specs Table */
.sn-kb-specs {
    margin-bottom: 28px;
}

.sn-kb-specs-table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    overflow: hidden;
}

.sn-kb-specs-table th,
.sn-kb-specs-table td {
    padding: 10px 16px;
    text-align: left;
    font-size: 14px;
    border-bottom: 1px solid var(--kb-border);
}

.sn-kb-specs-table th {
    width: 40%;
    background: var(--kb-bg);
    font-weight: 600;
    color: var(--kb-text);
}

.sn-kb-specs-table td {
    color: var(--kb-text-secondary);
}

.sn-kb-specs-table tr:last-child th,
.sn-kb-specs-table tr:last-child td {
    border-bottom: none;
}

/* FAQs */
.sn-kb-faqs {
    margin-bottom: 28px;
}

.sn-kb-faq-item {
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    margin-bottom: 8px;
    overflow: hidden;
}

.sn-kb-faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 14px 18px;
    background: var(--kb-bg);
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--kb-text);
    text-align: left;
    transition: background 0.1s;
}

.sn-kb-faq-question:hover {
    background: #eef1f5;
}

.sn-kb-faq-question svg {
    flex-shrink: 0;
    color: var(--kb-text-muted);
    transition: transform 0.2s;
}

.sn-kb-faq-item.open .sn-kb-faq-question svg {
    transform: rotate(180deg);
}

.sn-kb-faq-answer {
    display: none;
    padding: 14px 18px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--kb-text-secondary);
    border-top: 1px solid var(--kb-border);
}

.sn-kb-faq-item.open .sn-kb-faq-answer {
    display: block;
}

.sn-kb-faq-answer p {
    margin: 0;
}

/* Related Products */
.sn-kb-related-products {
    margin-bottom: 28px;
}

.sn-kb-products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.sn-kb-product-card {
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    padding: 16px;
    text-align: center;
    background: var(--kb-card-bg);
}

.sn-kb-product-img {
    margin-bottom: 10px;
}

.sn-kb-product-img img {
    max-width: 120px;
    height: auto;
    border-radius: 4px;
}

.sn-kb-product-card h4 {
    font-size: 13px;
    font-weight: 600;
    margin: 0 0 10px;
    color: var(--kb-text);
}

.sn-kb-product-actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

/* Related Articles */
.sn-kb-related-articles {
    margin-bottom: 28px;
}

.sn-kb-article-card {
    display: block;
    padding: 16px 20px;
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-radius);
    text-decoration: none;
    color: var(--kb-text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.sn-kb-article-card:hover {
    border-color: var(--kb-accent);
    box-shadow: 0 4px 12px rgba(44, 110, 203, 0.08);
}

.sn-kb-article-card h4 {
    font-size: 14px;
    font-weight: 600;
    margin: 0 0 4px;
}

.sn-kb-article-card p {
    font-size: 13px;
    color: var(--kb-text-muted);
    margin: 0 0 6px;
    line-height: 1.4;
}

.sn-kb-read-more {
    font-size: 12px;
    font-weight: 600;
    color: var(--kb-accent);
}

/* Buttons */
.sn-kb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s;
    border: none;
}

.sn-kb-btn-outline {
    background: transparent;
    border: 1px solid var(--kb-border);
    color: var(--kb-text-secondary);
}

.sn-kb-btn-outline:hover {
    border-color: var(--kb-accent);
    color: var(--kb-accent);
}

.sn-kb-btn-primary {
    background: var(--kb-accent);
    color: #fff;
}

.sn-kb-btn-primary:hover {
    background: var(--kb-accent-hover);
}

/* CTA */
.sn-kb-cta {
    text-align: center;
    padding: 36px 24px;
    background: linear-gradient(135deg, #1a3a2a 0%, #0f2a1d 100%);
    border-radius: 12px;
    margin-top: 36px;
}

.sn-kb-cta h3 {
    margin: 0 0 6px;
    font-size: 1.3rem;
    color: #fff;
    font-weight: 700;
}

.sn-kb-cta p {
    margin: 0 0 18px;
    color: #a8e6cf;
    font-size: 14px;
}

.sn-kb-btn-cta {
    display: inline-flex;
    padding: 12px 28px;
    background: var(--kb-green);
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    border-radius: 8px;
    text-decoration: none;
    transition: background 0.15s;
}

.sn-kb-btn-cta:hover {
    background: #219a52;
    color: #fff;
}

/* Pagination */
.sn-kb-articles-grid .nav-links,
.sn-kb-articles-grid .pagination {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    gap: 6px;
    padding: 20px 0;
}

.sn-kb-articles-grid .nav-links a,
.sn-kb-articles-grid .nav-links span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border-radius: 6px;
    border: 1px solid var(--kb-border);
    background: var(--kb-card-bg);
    color: var(--kb-text-secondary);
    font-size: 14px;
    text-decoration: none;
    transition: all 0.15s;
}

.sn-kb-articles-grid .nav-links a:hover {
    border-color: var(--kb-accent);
    color: var(--kb-accent);
}

.sn-kb-articles-grid .nav-links .current {
    background: var(--kb-accent);
    border-color: var(--kb-accent);
    color: #fff;
    font-weight: 600;
}

/* No results */
.sn-kb-no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: var(--kb-text-muted);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .sn-kb-archive-header h1 {
        font-size: 1.5rem;
    }

    .sn-kb-title {
        font-size: 1.6rem;
    }

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

    .sn-kb-products-grid {
        grid-template-columns: 1fr 1fr;
    }

    .sn-kb-meta {
        gap: 10px;
    }
}