/**
 * Help Center CSS Styles
 * Phase B04: Public Help Center UI
 *
 * This file provides styling for:
 * - Article content (prose-like typography)
 * - Table of Contents (sticky sidebar)
 * - Search bar hero section
 * - Category card hover effects
 * - Print-friendly styles
 * - Responsive layouts
 */

/* ============================================
   Article Content Styling (Prose Typography)
   ============================================ */

.help-article-content {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--closina-text-primary);
}

.help-article-content h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--closina-text-primary);
}

.help-article-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.25rem;
    border-bottom: 1px solid var(--closina-border);
    color: var(--closina-text-primary);
}

.help-article-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--closina-text-primary);
}

.help-article-content h4,
.help-article-content h5,
.help-article-content h6 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--closina-text-primary);
}

.help-article-content p {
    margin-bottom: 1rem;
}

.help-article-content ul,
.help-article-content ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.help-article-content li {
    margin-bottom: 0.25rem;
}

.help-article-content code {
    background-color: var(--closina-surface);
    padding: 0.125rem 0.375rem;
    border-radius: var(--closina-radius-sm);
    font-family: var(--closina-font-mono);
    font-size: 0.9em;
}

.help-article-content pre {
    background-color: var(--closina-surface);
    padding: 1rem;
    border-radius: var(--closina-radius-md);
    overflow-x: auto;
    margin-bottom: 1rem;
}

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

.help-article-content blockquote {
    border-left: 4px solid var(--closina-primary);
    padding-left: 1rem;
    margin-left: 0;
    margin-bottom: 1rem;
    color: var(--closina-text-secondary);
    font-style: italic;
}

.help-article-content a {
    color: var(--closina-primary);
    text-decoration: none;
}

.help-article-content a:hover {
    text-decoration: underline;
}

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

.help-article-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.help-article-content th,
.help-article-content td {
    border: 1px solid var(--closina-border);
    padding: 0.5rem 0.75rem;
    text-align: left;
}

.help-article-content th {
    background-color: var(--closina-surface);
    font-weight: 600;
}

/* ============================================
   Table of Contents Styling
   ============================================ */

.toc-container {
    background-color: var(--closina-surface);
}

.toc-container .mud-navlink {
    font-size: 0.875rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--closina-radius-sm);
}

.toc-container .mud-navlink:hover {
    background-color: var(--closina-hover-faint);
}

/* Nested TOC items (h3) */
.toc-container .mud-navlink.pl-4 {
    padding-left: 1.5rem;
    font-size: 0.8125rem;
}

/* ============================================
   Search Bar Hero Styling
   ============================================ */

.help-search-hero {
    background: linear-gradient(135deg, var(--closina-primary) 0%, var(--closina-primary-hover) 100%);
    padding: 2rem;
    border-radius: var(--closina-radius-lg);
    margin-bottom: 2rem;
}

.help-search-hero .mud-input-root {
    background-color: var(--closina-surface, #ffffff);
    border-radius: var(--closina-radius-sm);
}

/* ============================================
   Category Card Styling
   ============================================ */

.category-card {
    transition: transform var(--closina-transition), box-shadow var(--closina-transition);
    cursor: pointer;
    border-radius: var(--closina-radius-md);
}

.category-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--closina-shadow-md);
}

/* ============================================
   Search Result Highlighting
   ============================================ */

.search-result-card mark {
    background-color: var(--closina-warning-light);
    padding: 0 0.125rem;
    border-radius: var(--closina-radius-sm);
}

/* ============================================
   Responsive Layouts
   ============================================ */

/* Mobile (xs): Single column, TOC collapsed */
@media (max-width: 599px) {
    .toc-container {
        position: static;
        margin-bottom: 1rem;
    }

    .help-article-content h1 {
        font-size: 1.5rem;
    }

    .help-article-content h2 {
        font-size: 1.25rem;
    }

    .help-article-content h3 {
        font-size: 1.1rem;
    }
}

/* Tablet (sm/md): TOC still in sidebar */
@media (min-width: 600px) and (max-width: 1279px) {
    .help-article-content h1 {
        font-size: 1.75rem;
    }
}

/* Desktop (lg+): Sticky TOC sidebar */
@media (min-width: 1280px) {
    .toc-sticky {
        position: sticky;
        top: 80px;
    }
}

/* ============================================
   Dark Mode Overrides (Phase U01 Sub-Phase 5)
   ============================================ */

[data-theme="dark"] .help-article-content {
    color: var(--closina-text-primary);
}

[data-theme="dark"] .help-article-content h1,
[data-theme="dark"] .help-article-content h2,
[data-theme="dark"] .help-article-content h3,
[data-theme="dark"] .help-article-content h4,
[data-theme="dark"] .help-article-content h5,
[data-theme="dark"] .help-article-content h6 {
    color: var(--closina-text-primary);
}

[data-theme="dark"] .help-article-content h2 {
    border-bottom-color: var(--closina-border);
}

[data-theme="dark"] .help-article-content code {
    background-color: var(--closina-surface-hover);
    color: var(--closina-text-primary);
}

[data-theme="dark"] .help-article-content pre {
    background-color: var(--closina-surface-hover);
    color: var(--closina-text-primary);
}

[data-theme="dark"] .help-article-content blockquote {
    border-left-color: var(--closina-primary);
    color: var(--closina-text-secondary);
}

[data-theme="dark"] .help-article-content a {
    color: var(--closina-link);
}

[data-theme="dark"] .help-article-content th,
[data-theme="dark"] .help-article-content td {
    border-color: var(--closina-border);
}

[data-theme="dark"] .help-article-content th {
    background-color: var(--closina-surface-hover);
    color: var(--closina-text-primary);
}

[data-theme="dark"] .toc-container {
    background-color: var(--closina-surface);
}

[data-theme="dark"] .toc-container .mud-navlink:hover {
    background-color: var(--closina-surface-hover);
}

[data-theme="dark"] .help-search-hero .mud-input-root {
    background-color: var(--closina-surface);
    color: var(--closina-text-primary);
}

[data-theme="dark"] .category-card {
    background-color: var(--closina-surface);
}

[data-theme="dark"] .search-result-card mark {
    background-color: var(--closina-primary-border);
    color: var(--closina-text-primary);
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
    /* Hide navigation and interactive elements */
    .help-search-hero,
    .toc-container,
    .mud-breadcrumbs,
    .mud-button,
    .mud-icon-button,
    .helpfulness-rating,
    nav,
    header,
    footer {
        display: none !important;
    }

    /* Full width content */
    .help-article-content {
        max-width: 100%;
        padding: 0;
    }

    /* Ensure proper page breaks */
    .help-article-content h1,
    .help-article-content h2,
    .help-article-content h3 {
        page-break-after: avoid;
    }

    .help-article-content pre,
    .help-article-content img,
    .help-article-content table {
        page-break-inside: avoid;
    }

    /* Show link URLs in print */
    .help-article-content a::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: var(--closina-text-secondary);
    }

    /* Remove shadows and backgrounds */
    .mud-paper {
        box-shadow: none !important;
        border: 1px solid var(--closina-border);
    }
}