/**
 * Knowledge Base Styles
 *
 * @package Isomate_SaaS
 * @since 1.0.0
 */

/* ==========================================================================
   Variables
   ========================================================================== */

:root {
    --kb-primary-color: #6E49CB;
    --kb-primary-hover: #5a3ba8;
    --kb-text-color: #1a1a2e;
    --kb-text-muted: #6b7280;
    --kb-border-color: #e5e7eb;
    --kb-bg-light: #f9fafb;
    --kb-bg-white: #ffffff;
    --kb-success-color: #10b981;
    --kb-warning-color: #f59e0b;
    --kb-error-color: #ef4444;
    --kb-radius: 8px;
    --kb-radius-lg: 12px;
    --kb-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --kb-shadow-lg: 0 4px 6px rgba(0, 0, 0, 0.1);
    --kb-transition: 0.2s ease;
}

/* ==========================================================================
   Base Layout
   ========================================================================== */

.kb-archive,
.kb-category-archive,
.kb-single-article {
    /* Layout handled by .site-main and .container */
}


/* ==========================================================================
   Archive Header
   ========================================================================== */

.kb-archive-header,
.kb-category-header {
    text-align: center;
    margin-bottom: 2rem;
}

.kb-archive-title,
.kb-category-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--kb-text-color);
    margin: 0 0 0.5rem;
}

@media (min-width: 768px) {
    .kb-archive-title,
    .kb-category-title {
        font-size: 2.5rem;
    }
}

.kb-archive-description,
.kb-category-description {
    color: var(--kb-text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.kb-category-header-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: var(--kb-bg-light);
    border-radius: 50%;
    margin-bottom: 1rem;
}

.kb-category-header-icon .dashicons {
    font-size: 32px;
    width: 32px;
    height: 32px;
    color: var(--kb-primary-color);
}

.kb-category-count {
    color: var(--kb-text-muted);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* ==========================================================================
   Category List
   ========================================================================== */

.kb-categories-section,
.kb-child-categories {
    margin-bottom: 3rem;
}

.kb-section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 1.5rem;
}

.kb-category-list {
    margin: 0;
}

.kb-category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.kb-category-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--kb-bg-white);
    border: 1px solid var(--kb-border-color);
    border-radius: var(--kb-radius-lg);
    text-decoration: none;
    transition: border-color var(--kb-transition), box-shadow var(--kb-transition), transform var(--kb-transition);
}

.kb-category-card:hover {
    border-color: var(--kb-primary-color);
    box-shadow: var(--kb-shadow-lg);
    transform: translateY(-2px);
}

.kb-category-card-child {
    border-left: 3px solid var(--kb-primary-color);
}

.kb-category-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(110, 73, 203, 0.1) 0%, rgba(110, 73, 203, 0.05) 100%);
    border-radius: var(--kb-radius);
    flex-shrink: 0;
}

.kb-category-icon .dashicons {
    font-size: 24px;
    width: 24px;
    height: 24px;
    color: var(--kb-primary-color);
}

.kb-category-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--kb-primary-color);
}

.kb-category-info {
    flex: 1;
    min-width: 0;
}

.kb-category-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 0.25rem;
    line-height: 1.3;
}

.kb-category-card:hover .kb-category-name {
    color: var(--kb-primary-color);
}

.kb-category-article-count {
    font-size: 0.875rem;
    color: var(--kb-text-muted);
    display: block;
}

.kb-category-desc {
    font-size: 0.875rem;
    color: var(--kb-text-muted);
    margin: 0.5rem 0 0;
    line-height: 1.5;
}


/* ==========================================================================
   Search Form
   ========================================================================== */

.kb-search-form {
    max-width: 600px;
    margin: 0 auto 2rem;
}

.kb-search-wrapper {
    position: relative;
    display: flex;
    gap: 0.5rem;
}

.kb-search-input {
    flex: 1;
    padding: 0.875rem 1rem 0.875rem 2.75rem;
    font-size: 1rem;
    border: 2px solid var(--kb-border-color);
    border-radius: var(--kb-radius);
    background: var(--kb-bg-white);
    transition: border-color var(--kb-transition), box-shadow var(--kb-transition);
}

.kb-search-input:focus {
    outline: none;
    border-color: var(--kb-primary-color);
    box-shadow: 0 0 0 3px rgba(110, 73, 203, 0.1);
}

.kb-search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--kb-text-muted);
    pointer-events: none;
}

.kb-search-submit {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--kb-bg-white);
    background: var(--kb-primary-color);
    border: none;
    border-radius: var(--kb-radius);
    cursor: pointer;
    transition: background var(--kb-transition);
}

.kb-search-submit:hover {
    background: var(--kb-primary-hover);
}

.kb-search-clear {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    color: var(--kb-text-muted);
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    text-decoration: none;
    transition: color var(--kb-transition), background var(--kb-transition);
    flex-shrink: 0;
}

.kb-search-clear:hover {
    color: var(--kb-error-color);
    background: rgba(239, 68, 68, 0.1);
}

.kb-search-clear .dashicons {
    font-size: 20px;
    width: 20px;
    height: 20px;
}

.kb-search-error {
    color: var(--kb-error-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* ==========================================================================
   Article Cards
   ========================================================================== */

.kb-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.kb-article-card {
    display: flex;
    flex-direction: column;
    background: var(--kb-bg-white);
    border: 1px solid var(--kb-border-color);
    border-radius: var(--kb-radius-lg);
    overflow: hidden;
    transition: border-color var(--kb-transition), box-shadow var(--kb-transition);
}

.kb-article-card:hover {
    border-color: var(--kb-primary-color);
    box-shadow: var(--kb-shadow-lg);
}

.kb-article-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.kb-article-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--kb-transition);
}

.kb-article-card:hover .kb-article-card-image img {
    transform: scale(1.05);
}

.kb-article-card-content {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.kb-article-card-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--kb-primary-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    text-decoration: none;
}

.kb-article-card-category:hover {
    text-decoration: underline;
}

.kb-article-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 0.5rem;
    line-height: 1.4;
}

.kb-article-card-title a {
    color: inherit;
    text-decoration: none;
}

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

.kb-article-card-excerpt {
    font-size: 0.875rem;
    color: var(--kb-text-muted);
    line-height: 1.6;
    margin: 0 0 1rem;
    flex: 1;
}

.kb-article-card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--kb-text-muted);
}

.kb-article-card-date,
.kb-article-card-type {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.kb-article-card-date .dashicons,
.kb-article-card-type .dashicons {
    font-size: 14px;
    width: 14px;
    height: 14px;
}


/* ==========================================================================
   Single Article
   ========================================================================== */

.kb-article {
    max-width: 800px;
    margin: 0 auto;
}

.kb-article-header {
    margin-bottom: 2rem;
}

.kb-article-featured-image {
    margin-bottom: 1.5rem;
    border-radius: var(--kb-radius-lg);
    overflow: hidden;
}

.kb-article-featured-image img {
    width: 100%;
    height: auto;
    display: block;
}

.kb-article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.kb-article-category {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--kb-primary-color);
    background: rgba(110, 73, 203, 0.1);
    border-radius: 9999px;
    text-decoration: none;
    transition: background var(--kb-transition);
}

.kb-article-category:hover {
    background: rgba(110, 73, 203, 0.2);
}

.kb-article-type {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--kb-text-muted);
    background: var(--kb-bg-light);
    border-radius: 9999px;
}

.kb-article-type .dashicons {
    font-size: 14px;
    width: 14px;
    height: 14px;
}

.kb-article-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--kb-text-color);
    margin: 0 0 1rem;
    line-height: 1.3;
}

@media (min-width: 768px) {
    .kb-article-title {
        font-size: 2rem;
    }
}

.kb-article-info {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--kb-text-muted);
}

.kb-article-date {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.kb-article-date .dashicons {
    font-size: 16px;
    width: 16px;
    height: 16px;
}

/* Article Content */
.kb-article-content {
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--kb-text-color);
}

.kb-article-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
}

.kb-article-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
}

.kb-article-content p {
    margin: 0 0 1.25rem;
}

.kb-article-content ul,
.kb-article-content ol {
    margin: 0 0 1.25rem;
    padding-left: 1.5rem;
}

.kb-article-content li {
    margin-bottom: 0.5rem;
}

.kb-article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--kb-radius);
    margin: 1rem 0;
}

.kb-article-content pre {
    background: var(--kb-bg-light);
    padding: 1rem;
    border-radius: var(--kb-radius);
    overflow-x: auto;
    margin: 1rem 0;
}

.kb-article-content code {
    font-family: 'JetBrains Mono', 'SF Mono', Monaco, 'Consolas', monospace;
    font-size: 0.875em;
    background: var(--kb-bg-light);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
}

.kb-article-content pre code {
    background: none;
    padding: 0;
}


/* ==========================================================================
   How-To Steps
   ========================================================================== */

.kb-howto-steps {
    margin-top: 2rem;
}

.kb-howto-steps-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 1.5rem;
}

.kb-howto-steps-list {
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: step-counter;
}

.kb-howto-step {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--kb-border-color);
}

.kb-howto-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.kb-howto-step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--kb-primary-color);
    color: var(--kb-bg-white);
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: 50%;
    flex-shrink: 0;
}

.kb-howto-step-content {
    flex: 1;
    min-width: 0;
}

.kb-howto-step-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 0.5rem;
}

.kb-howto-step-text {
    color: var(--kb-text-muted);
    line-height: 1.6;
}

.kb-howto-step-image {
    margin-top: 1rem;
}

.kb-howto-step-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--kb-radius);
    border: 1px solid var(--kb-border-color);
}

/* ==========================================================================
   FAQ Accordion
   ========================================================================== */

.kb-faq-accordion {
    margin-top: 2rem;
}

.kb-faq-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 1.5rem;
}

.kb-faq-list {
    margin: 0;
}

.kb-faq-item {
    border: 1px solid var(--kb-border-color);
    border-radius: var(--kb-radius);
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.kb-faq-question {
    margin: 0;
}

.kb-faq-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--kb-text-color);
    background: var(--kb-bg-white);
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background var(--kb-transition);
}

.kb-faq-toggle:hover {
    background: var(--kb-bg-light);
}

.kb-faq-toggle[aria-expanded="true"] {
    background: var(--kb-bg-light);
}

.kb-faq-question-text {
    flex: 1;
    padding-right: 1rem;
}

.kb-faq-icon {
    color: var(--kb-text-muted);
    transition: transform var(--kb-transition);
}

.kb-faq-toggle[aria-expanded="true"] .kb-faq-icon {
    transform: rotate(180deg);
}

.kb-faq-answer {
    padding: 0 1.25rem 1.25rem;
    color: var(--kb-text-muted);
    line-height: 1.6;
    margin: 0;
}

.kb-faq-answer[hidden] {
    display: none;
}


/* ==========================================================================
   Article Footer
   ========================================================================== */

.kb-article-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--kb-border-color);
}

.kb-article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.kb-article-tags-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--kb-text-color);
}

.kb-article-tag {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    color: var(--kb-text-muted);
    background: var(--kb-bg-light);
    border-radius: 9999px;
    text-decoration: none;
    transition: background var(--kb-transition), color var(--kb-transition);
}

.kb-article-tag:hover {
    background: var(--kb-primary-color);
    color: var(--kb-bg-white);
}

.kb-article-helpful {
    text-align: center;
    padding: 1.5rem;
    background: var(--kb-bg-light);
    border-radius: var(--kb-radius-lg);
}

.kb-article-helpful-text {
    font-size: 1rem;
    font-weight: 500;
    color: var(--kb-text-color);
    margin: 0 0 1rem;
}

.kb-article-helpful-buttons {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
}

.kb-helpful-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--kb-border-color);
    border-radius: var(--kb-radius);
    background: var(--kb-bg-white);
    cursor: pointer;
    transition: all var(--kb-transition);
}

.kb-helpful-btn:hover {
    border-color: var(--kb-primary-color);
    color: var(--kb-primary-color);
}

.kb-helpful-btn .dashicons {
    font-size: 16px;
    width: 16px;
    height: 16px;
}

.kb-helpful-yes:hover {
    border-color: var(--kb-success-color);
    color: var(--kb-success-color);
}

.kb-helpful-no:hover {
    border-color: var(--kb-error-color);
    color: var(--kb-error-color);
}

/* ==========================================================================
   Related Articles
   ========================================================================== */

.kb-related-articles {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--kb-border-color);
}

.kb-related-articles-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 1.5rem;
}

.kb-related-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.kb-related-article-card {
    background: var(--kb-bg-white);
    border: 1px solid var(--kb-border-color);
    border-radius: var(--kb-radius);
    overflow: hidden;
    transition: border-color var(--kb-transition), box-shadow var(--kb-transition);
}

.kb-related-article-card:hover {
    border-color: var(--kb-primary-color);
    box-shadow: var(--kb-shadow);
}

.kb-related-article-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.kb-related-article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.kb-related-article-content {
    padding: 1rem;
}

.kb-related-article-category {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--kb-primary-color);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-decoration: none;
    margin-bottom: 0.375rem;
}

.kb-related-article-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 0.375rem;
    line-height: 1.4;
}

.kb-related-article-title a {
    color: inherit;
    text-decoration: none;
}

.kb-related-article-title a:hover {
    color: var(--kb-primary-color);
}

.kb-related-article-excerpt {
    font-size: 0.8125rem;
    color: var(--kb-text-muted);
    line-height: 1.5;
    margin: 0;
}


/* ==========================================================================
   Article Navigation
   ========================================================================== */

.kb-article-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--kb-border-color);
}

.kb-back-to-kb,
.kb-back-to-category {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--kb-primary-color);
    text-decoration: none;
    transition: opacity var(--kb-transition);
}

.kb-back-to-kb:hover,
.kb-back-to-category:hover {
    opacity: 0.8;
}

.kb-back-to-kb .dashicons,
.kb-back-to-category .dashicons {
    font-size: 16px;
    width: 16px;
    height: 16px;
}

/* ==========================================================================
   Search Results
   ========================================================================== */

.kb-search-results {
    margin-bottom: 3rem;
}

.kb-search-results-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 1.5rem;
}

.kb-search-highlight {
    background: rgba(110, 73, 203, 0.2);
    padding: 0.125rem 0.25rem;
    border-radius: 2px;
}

/* ==========================================================================
   Empty States
   ========================================================================== */

.kb-no-articles,
.kb-no-results {
    text-align: center;
    padding: 3rem 1.5rem;
    background: var(--kb-bg-light);
    border-radius: var(--kb-radius-lg);
}

.kb-no-articles .dashicons,
.kb-no-results .dashicons {
    font-size: 48px;
    width: 48px;
    height: 48px;
    color: var(--kb-text-muted);
    margin-bottom: 1rem;
}

.kb-no-articles h3,
.kb-no-results h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--kb-text-color);
    margin: 0 0 0.5rem;
}

.kb-no-articles p,
.kb-no-results p {
    color: var(--kb-text-muted);
    margin: 0 0 1rem;
}

.kb-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--kb-primary-color);
    text-decoration: none;
}

.kb-back-link:hover {
    text-decoration: underline;
}

.kb-search-suggestions {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
    font-size: 0.875rem;
    color: var(--kb-text-muted);
}

.kb-search-suggestions li {
    margin-bottom: 0.25rem;
}

/* ==========================================================================
   Pagination
   ========================================================================== */

.kb-pagination,
.navigation.pagination {
    margin-top: 2rem;
    text-align: center;
}

.kb-pagination .nav-links,
.navigation.pagination .nav-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.kb-pagination .page-numbers,
.navigation.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--kb-text-color);
    background: var(--kb-bg-white);
    border: 1px solid var(--kb-border-color);
    border-radius: var(--kb-radius);
    text-decoration: none;
    transition: all var(--kb-transition);
}

.kb-pagination .page-numbers:hover,
.navigation.pagination .page-numbers:hover {
    border-color: var(--kb-primary-color);
    color: var(--kb-primary-color);
}

.kb-pagination .page-numbers.current,
.navigation.pagination .page-numbers.current {
    background: var(--kb-primary-color);
    border-color: var(--kb-primary-color);
    color: var(--kb-bg-white);
}

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */

@media (max-width: 767px) {
    .kb-category-grid {
        grid-template-columns: 1fr;
    }

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

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

    .kb-howto-step {
        flex-direction: column;
    }

    .kb-howto-step-number {
        width: 32px;
        height: 32px;
        font-size: 0.875rem;
    }

    .kb-article-navigation {
        flex-direction: column;
        align-items: flex-start;
    }

    .kb-search-wrapper {
        flex-direction: column;
    }

    .kb-search-submit {
        width: 100%;
    }
}