/* ==========================================================================
   Blue Byte — style.css
   Rebuilt to exactly match Stitch design.
   Palette: Material Design 3 "Blue Byte" light scheme.
   Font: Inter (400/600/700/800) + JetBrains Mono
   ========================================================================== */

/* ==========================================================================
   1. CSS Variables — direct from Stitch DESIGN.md palette
   ========================================================================== */
:root {
    /* Core palette */
    --bb-primary:                  #003f87;
    --bb-primary-container:        #0056b3;
    --bb-on-primary:               #ffffff;
    --bb-on-primary-container:     #bbd0ff;
    --bb-primary-fixed:            #d7e2ff;
    --bb-primary-fixed-dim:        #acc7ff;

    --bb-secondary:                #565e74;
    --bb-secondary-container:      #dae2fd;
    --bb-on-secondary-container:   #5c647a;
    --bb-on-secondary-fixed:       #131b2e;

    --bb-tertiary:                 #004762;
    --bb-tertiary-container:       #006083;
    --bb-tertiary-fixed:           #c4e7ff;
    --bb-tertiary-fixed-dim:       #7bd0ff;
    --bb-on-tertiary-fixed:        #001e2c;
    --bb-on-tertiary-container:    #97d8ff;

    --bb-background:               #f7f9fb;
    --bb-surface:                  #f7f9fb;
    --bb-surface-bright:           #f7f9fb;
    --bb-surface-dim:              #d8dadc;
    --bb-surface-variant:          #e0e3e5;
    --bb-surface-container-lowest: #ffffff;
    --bb-surface-container-low:    #f2f4f6;
    --bb-surface-container:        #eceef0;
    --bb-surface-container-high:   #e6e8ea;
    --bb-surface-container-highest:#e0e3e5;

    --bb-on-surface:               #191c1e;
    --bb-on-surface-variant:       #424752;
    --bb-on-background:            #191c1e;
    --bb-inverse-surface:          #2d3133;
    --bb-inverse-on-surface:       #eff1f3;

    --bb-outline:                  #727784;
    --bb-outline-variant:          #c2c6d4;

    --bb-error:                    #ba1a1a;
    --bb-error-container:          #ffdad6;

    /* Spacing (from Stitch) */
    --bb-xs:   4px;
    --bb-sm:   8px;
    --bb-md:   16px;
    --bb-lg:   24px;
    --bb-xl:   48px;
    --bb-gutter: 24px;
    --bb-container-max: 1200px;

    /* Typography (from Stitch fontSize config) */
    --bb-display-lg-size:      48px;
    --bb-display-lg-lh:        56px;
    --bb-display-lg-ls:        -0.02em;
    --bb-display-mobile-size:  32px;
    --bb-display-mobile-lh:    40px;
    --bb-display-mobile-ls:    -0.01em;
    --bb-headline-md-size:     24px;
    --bb-headline-md-lh:       32px;
    --bb-headline-sm-size:     20px;
    --bb-headline-sm-lh:       28px;
    --bb-body-lg-size:         18px;
    --bb-body-lg-lh:           28px;
    --bb-body-md-size:         16px;
    --bb-body-md-lh:           24px;
    --bb-label-md-size:        14px;
    --bb-label-md-lh:          20px;
    --bb-label-md-ls:          0.05em;
    --bb-caption-size:         12px;
    --bb-caption-lh:           16px;

    /* Radius (from Stitch borderRadius config) */
    --bb-radius:    0.25rem;  /* DEFAULT */
    --bb-radius-lg: 0.5rem;
    --bb-radius-xl: 0.75rem;
    --bb-radius-full: 9999px;

    /* Chip color */
    --bb-chip-bg:   #E0F2FE;

    /* Progress bar */
    --bb-progress-color: #003f87;

    /* Pagination */
    --pagination-border:   var(--bb-outline-variant);
    --pagination-text:     var(--bb-on-surface-variant);
    --pagination-accent:   var(--bb-primary);
    --pagination-hover-bg: rgba(0, 63, 135, 0.07);
    --pagination-muted:    var(--bb-outline);
}

/* ==========================================================================
   2. Reset & Base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: var(--bb-body-md-size);
    line-height: var(--bb-body-md-lh);
    background-color: var(--bb-background);
    color: var(--bb-on-surface);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

img  { max-width: 100%; height: auto; display: block; }
a    { color: var(--bb-primary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--bb-primary-container); }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; }

/* ==========================================================================
   3. Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', system-ui, sans-serif;
    color: var(--bb-on-background);
    line-height: 1.2;
}

/* ==========================================================================
   4. Layout
   ========================================================================== */
.bb-container {
    max-width: var(--bb-container-max);
    margin: 0 auto;
    padding-left: var(--bb-lg);
    padding-right: var(--bb-lg);
}

.bb-main {
    flex: 1;
}

/* ==========================================================================
   5. Header / Navigation
   Stitch: bg-surface (light), sticky, border-b outline-variant
   Brand text: font-headline-md bold text-primary
   Nav links: text-on-surface-variant, active: text-primary + border-b-2
   ========================================================================== */
.bb-header {
    background-color: var(--bb-surface);
    border-bottom: 1px solid var(--bb-outline-variant);
    position: sticky;
    top: 0;
    z-index: 50;
    transition: box-shadow 0.2s;
}

.bb-header.scrolled {
    box-shadow: 0 2px 12px rgba(0,0,0,0.07);
}

.bb-nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: var(--bb-xl);
}

/* Brand */
.bb-brand {
    text-decoration: none;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.bb-brand-text {
    font-size: var(--bb-headline-md-size);
    line-height: var(--bb-headline-md-lh);
    font-weight: 700;
    color: var(--bb-primary);
    margin: 0;
    font-family: inherit;
    letter-spacing: 0;
}

/* Desktop nav links */
.bb-nav-links {
    display: flex;
    align-items: center;
    gap: var(--bb-lg);
    margin-left: auto;
}

.bb-nav-link {
    font-size: var(--bb-body-md-size);
    line-height: var(--bb-body-md-lh);
    color: var(--bb-on-surface-variant);
    text-decoration: none;
    padding-bottom: 4px;
    transition: color 0.2s;
}

.bb-nav-link:hover { color: var(--bb-primary); }

.bb-nav-link--active {
    color: var(--bb-primary);
    font-weight: 700;
    border-bottom: 2px solid var(--bb-primary);
}

/* Nav actions (search icon + hamburger) */
.bb-nav-actions {
    display: flex;
    align-items: center;
    gap: var(--bb-sm);
    flex-shrink: 0;
}

.bb-search-toggle,
.bb-hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--bb-radius);
    color: var(--bb-primary);
    background: none;
    border: none;
    cursor: pointer;
    transition: opacity 0.2s;
}

.bb-search-toggle:hover,
.bb-hamburger:hover { opacity: 0.7; }

.bb-hamburger { display: none; }

/* Search bar */
.bb-search-bar {
    background: var(--bb-surface-container-low);
    border-top: 1px solid var(--bb-outline-variant);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease, padding 0.25s ease;
}

.bb-search-bar.open {
    max-height: 80px;
    padding: var(--bb-sm) 0;
}

.bb-search-form {
    display: flex;
    align-items: center;
    gap: var(--bb-sm);
    height: 44px;
}

.bb-search-icon {
    flex-shrink: 0;
    color: var(--bb-outline);
}

.bb-search-input {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-size: var(--bb-body-md-size);
    color: var(--bb-on-surface);
}

.bb-search-input::placeholder { color: var(--bb-outline); }

.bb-search-close {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    color: var(--bb-outline);
    padding: 4px 8px;
    border-radius: var(--bb-radius);
    transition: color 0.15s;
}

.bb-search-close:hover { color: var(--bb-on-surface); }

/* Mobile drawer */
.bb-mobile-drawer {
    display: none;
    flex-direction: column;
    background: var(--bb-surface);
    border-top: 1px solid var(--bb-outline-variant);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.bb-mobile-drawer.open {
    max-height: 600px;
}

.bb-mobile-link {
    display: block;
    padding: 12px var(--bb-lg);
    font-size: var(--bb-body-md-size);
    color: var(--bb-on-surface-variant);
    text-decoration: none;
    border-bottom: 1px solid var(--bb-outline-variant);
    transition: background 0.15s, color 0.15s;
}

.bb-mobile-link:hover { color: var(--bb-primary); background: var(--bb-surface-container-low); }

.bb-mobile-link--active {
    color: var(--bb-primary);
    font-weight: 700;
}

.bb-mobile-search {
    padding: var(--bb-sm) var(--bb-lg);
}

.bb-mobile-search-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--bb-outline-variant);
    border-radius: var(--bb-radius);
    background: var(--bb-surface-container-lowest);
    font-size: var(--bb-body-md-size);
    color: var(--bb-on-surface);
    outline: none;
    transition: border-color 0.15s;
}

.bb-mobile-search-input:focus { border-color: var(--bb-primary); }

/* ==========================================================================
   6. Hero Section (Homepage)
   Stitch: py-xl, flex-col, display-lg text, body-lg description, CTA button
   ========================================================================== */
.bb-hero {
    padding: var(--bb-xl) 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--bb-md);
}

@media (min-width: 768px) {
    .bb-hero { padding: 80px 0; }
}

.bb-hero-title {
    font-size: var(--bb-display-mobile-size);
    line-height: var(--bb-display-mobile-lh);
    letter-spacing: var(--bb-display-mobile-ls);
    font-weight: 800;
    color: var(--bb-on-background);
    max-width: 48rem;
}

.bb-hero-title a {
    color: inherit;
    text-decoration: none;
}

.bb-hero-title a:hover { color: var(--bb-primary); }

@media (min-width: 768px) {
    .bb-hero-title {
        font-size: var(--bb-display-lg-size);
        line-height: var(--bb-display-lg-lh);
        letter-spacing: var(--bb-display-lg-ls);
    }
}

.bb-hero-desc {
    font-size: var(--bb-body-lg-size);
    line-height: var(--bb-body-lg-lh);
    color: var(--bb-on-surface-variant);
    max-width: 42rem;
}

.bb-hero-cta {
    margin-top: var(--bb-md);
}

/* ==========================================================================
   7. Post Cards / Article Row List (Homepage)
   Stitch: border-t outline-variant, flex-row, gap-lg, py-lg, border-b
   thumbnail 96x96 (md:128x128), chip + date, h3 title, body excerpt
   ========================================================================== */
.bb-articles-section {
    padding-bottom: var(--bb-xl);
}

.bb-articles-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: var(--bb-lg);
}

.bb-articles-heading {
    font-size: var(--bb-headline-md-size);
    line-height: var(--bb-headline-md-lh);
    font-weight: 700;
    color: var(--bb-on-surface);
}

.bb-view-archive {
    font-size: var(--bb-label-md-size);
    font-weight: 600;
    letter-spacing: var(--bb-label-md-ls);
    color: var(--bb-primary);
    text-decoration: none;
    transition: text-decoration 0.15s;
}

.bb-view-archive:hover { text-decoration: underline; }

/* Article row list */
.bb-article-list {
    border-top: 1px solid var(--bb-outline-variant);
    display: flex;
    flex-direction: column;
    gap: 0;
}

.bb-article-row {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: var(--bb-lg);
    padding: var(--bb-lg) var(--bb-sm);
    margin: 0 calc(-1 * var(--bb-sm));
    border-bottom: 1px solid var(--bb-outline-variant);
    border-radius: var(--bb-radius-lg);
    transition: background 0.2s;
    cursor: pointer;
}

.bb-article-row:hover {
    background: var(--bb-surface-container-low);
}

/* Thumbnail */
.bb-article-row-thumb {
    flex-shrink: 0;
    width: 96px;
    height: 96px;
    border-radius: var(--bb-radius-lg);
    overflow: hidden;
    background: var(--bb-surface-container-high);
    border: 1px solid var(--bb-outline-variant);
    display: block;
}

@media (min-width: 768px) {
    .bb-article-row-thumb {
        width: 128px;
        height: 128px;
    }
}

.bb-article-row-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bb-article-row-thumb-placeholder {
    width: 100%;
    height: 100%;
    background: var(--bb-surface-container-high);
}

/* Row body */
.bb-article-row-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--bb-xs);
}

.bb-article-row-meta {
    display: flex;
    align-items: center;
    gap: var(--bb-sm);
}

.bb-article-row-date {
    font-size: var(--bb-caption-size);
    line-height: var(--bb-caption-lh);
    color: var(--bb-on-surface-variant);
}

.bb-article-row-title {
    font-size: var(--bb-headline-sm-size);
    line-height: var(--bb-headline-sm-lh);
    font-weight: 600;
    color: var(--bb-on-background);
    transition: color 0.2s;
}

.bb-article-row:hover .bb-article-row-title { color: var(--bb-primary); }

.bb-article-row-title a {
    color: inherit;
    text-decoration: none;
}

.bb-article-row-excerpt {
    font-size: var(--bb-body-md-size);
    line-height: var(--bb-body-md-lh);
    color: var(--bb-on-surface-variant);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

@media (min-width: 768px) {
    .bb-article-row-excerpt { -webkit-line-clamp: none; }
}

/* Chips */
.bb-chip {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--bb-sm);
    background: var(--bb-chip-bg);
    color: var(--bb-primary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-radius: var(--bb-radius);
    text-decoration: none;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
}

.bb-chip:hover {
    background: var(--bb-primary);
    color: var(--bb-on-primary);
}

.bb-chip--sm {
    font-size: 10px;
    padding: 2px 6px;
}

/* Load more / pagination */
.bb-load-more {
    display: flex;
    justify-content: center;
    padding: var(--bb-xl) 0;
}

/* Empty state */
.bb-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--bb-md);
    padding: var(--bb-xl) 0;
    text-align: center;
    color: var(--bb-on-surface-variant);
}

.bb-empty-icon { color: var(--bb-outline-variant); }
.bb-empty-text { font-size: var(--bb-headline-sm-size); font-weight: 600; }
.bb-empty-sub  { font-size: var(--bb-body-md-size); }

/* ==========================================================================
   8. Single Post (Article) Styles
   Stitch: max-w-[800px] centered, display-lg h1, author avatar circle,
   full-width rounded-xl image, prose content, pull-quote, tags + actions
   ========================================================================== */
.bb-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: var(--bb-progress-color);
    z-index: 200;
    width: 0%;
    transition: width 0.1s ease-out;
}

.bb-article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--bb-xl) var(--bb-md);
}

@media (min-width: 768px) {
    .bb-article-container { padding: var(--bb-xl) 0; }
}

.bb-article {
    display: flex;
    flex-direction: column;
    gap: var(--bb-lg);
}

/* Article header */
.bb-article-header {
    display: flex;
    flex-direction: column;
    gap: var(--bb-md);
}

.bb-article-eyebrow {
    display: flex;
    align-items: center;
    gap: var(--bb-xs);
}

.bb-eyebrow-sep {
    color: var(--bb-on-surface-variant);
}

.bb-reading-time {
    font-size: var(--bb-label-md-size);
    line-height: var(--bb-label-md-lh);
    letter-spacing: var(--bb-label-md-ls);
    font-weight: 600;
    color: var(--bb-on-surface-variant);
}

/* h1 post title */
.bb-article-title {
    font-size: var(--bb-display-mobile-size);
    line-height: var(--bb-display-mobile-lh);
    letter-spacing: var(--bb-display-mobile-ls);
    font-weight: 800;
    color: var(--bb-on-surface);
}

@media (min-width: 768px) {
    .bb-article-title {
        font-size: var(--bb-display-lg-size);
        line-height: var(--bb-display-lg-lh);
        letter-spacing: var(--bb-display-lg-ls);
    }
}

/* Author row */
.bb-article-author {
    display: flex;
    align-items: center;
    gap: var(--bb-md);
    padding-top: var(--bb-xs);
}

.bb-author-avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--bb-radius-full);
    background: var(--bb-surface-container);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: var(--bb-primary);
    flex-shrink: 0;
    overflow: hidden;
}

.bb-author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bb-author-info {
    display: flex;
    flex-direction: column;
}

.bb-author-name {
    font-size: var(--bb-headline-sm-size);
    line-height: var(--bb-headline-sm-lh);
    font-weight: 600;
    color: var(--bb-on-surface);
}

.bb-author-meta {
    font-size: var(--bb-caption-size);
    line-height: var(--bb-caption-lh);
    color: var(--bb-on-surface-variant);
}

/* Featured image */
.bb-article-image {
    width: 100%;
    height: 400px;
    border-radius: var(--bb-radius-xl);
    overflow: hidden;
    border: 1px solid var(--bb-outline-variant);
}

.bb-article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Article footer */
.bb-article-footer {
    margin-top: var(--bb-xl);
    padding-top: var(--bb-lg);
    border-top: 1px solid var(--bb-outline-variant);
    display: flex;
    flex-direction: column;
    gap: var(--bb-lg);
}

@media (min-width: 768px) {
    .bb-article-footer {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

/* Tags */
.bb-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--bb-sm);
}

.bb-tag {
    display: inline-flex;
    align-items: center;
    padding: 4px var(--bb-md);
    background: var(--bb-surface-container-high);
    color: var(--bb-on-surface-variant);
    font-size: var(--bb-label-md-size);
    font-weight: 600;
    letter-spacing: var(--bb-label-md-ls);
    border-radius: var(--bb-radius-full);
    cursor: default;
    transition: background 0.15s;
}

.bb-tag:hover { background: var(--bb-secondary-container); }

/* Article action buttons */
.bb-article-actions {
    display: flex;
    align-items: center;
    gap: var(--bb-md);
}

.bb-action-btn {
    display: flex;
    align-items: center;
    gap: var(--bb-xs);
    font-size: var(--bb-label-md-size);
    font-weight: 600;
    letter-spacing: var(--bb-label-md-ls);
    color: var(--bb-primary);
    background: none;
    border: none;
    cursor: pointer;
    transition: opacity 0.15s;
}

.bb-action-btn:hover { opacity: 0.7; }

/* Related articles */
.bb-related {
    margin-top: var(--bb-xl);
    padding-top: var(--bb-xl);
    border-top: 1px solid var(--bb-outline-variant);
}

.bb-related-heading {
    font-size: var(--bb-headline-md-size);
    line-height: var(--bb-headline-md-lh);
    font-weight: 700;
    color: var(--bb-on-surface);
    margin-bottom: var(--bb-lg);
}

.bb-article-row--related .bb-article-row-thumb {
    width: 80px;
    height: 80px;
}

.bb-related-card-title {
    font-size: var(--bb-body-md-size);
    font-weight: 600;
    line-height: 1.4;
    color: var(--bb-on-surface);
}

.bb-related-card-title a {
    color: inherit;
    text-decoration: none;
}

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

/* ==========================================================================
   9. Archive / Category Page Styles
   Stitch: breadcrumb, display-lg h1, 4-col card grid, accent bar, hover lift
   ========================================================================== */
.bb-category-page {
    padding-top: var(--bb-xl);
    padding-bottom: var(--bb-xl);
}

.bb-cat-header {
    margin-bottom: var(--bb-xl);
    display: flex;
    flex-direction: column;
    gap: var(--bb-sm);
}

.bb-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--bb-sm);
    color: var(--bb-on-surface-variant);
}

.bb-breadcrumb-label {
    font-size: var(--bb-label-md-size);
    font-weight: 600;
    letter-spacing: var(--bb-label-md-ls);
    text-transform: uppercase;
}

.bb-breadcrumb-sep {
    width: 16px;
    height: 16px;
}

.bb-breadcrumb-current {
    font-size: var(--bb-label-md-size);
    font-weight: 600;
    letter-spacing: var(--bb-label-md-ls);
    text-transform: uppercase;
    color: var(--bb-primary);
}

.bb-cat-title {
    font-size: var(--bb-display-mobile-size);
    line-height: var(--bb-display-mobile-lh);
    letter-spacing: var(--bb-display-lg-ls);
    font-weight: 800;
    color: var(--bb-on-surface);
    display: block;
}

@media (min-width: 768px) {
    .bb-cat-title {
        font-size: var(--bb-display-lg-size);
        line-height: var(--bb-display-lg-lh);
    }
}

.bb-cat-desc {
    font-size: var(--bb-body-lg-size);
    line-height: var(--bb-body-lg-lh);
    color: var(--bb-on-surface-variant);
    max-width: 42rem;
}

/* 4-col card grid */
.bb-cat-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--bb-gutter);
}

@media (min-width: 640px)  { .bb-cat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .bb-cat-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1200px) { .bb-cat-grid { grid-template-columns: repeat(4, 1fr); } }

.bb-cat-card {
    background: var(--bb-surface-container-lowest);
    border: 1px solid var(--bb-outline-variant);
    border-radius: var(--bb-radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.3s, transform 0.2s;
    display: flex;
    flex-direction: column;
}

.bb-cat-card:hover {
    border-color: var(--bb-primary);
    transform: translateY(-4px);
}

/* 16:9 image area */
.bb-cat-card-img {
    display: block;
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    overflow: hidden;
    background: var(--bb-surface-container);
}

.bb-cat-card-img img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.bb-cat-card:hover .bb-cat-card-img img { transform: scale(1.05); }

.bb-cat-card-img-placeholder {
    position: absolute;
    inset: 0;
    background: var(--bb-surface-container);
}

.bb-featured-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--bb-primary);
    color: var(--bb-on-primary);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 2px 8px;
    border-radius: 2px;
}

.bb-cat-card-body {
    padding: var(--bb-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* Primary accent bar */
.bb-accent-bar {
    height: 4px;
    width: 32px;
    background: var(--bb-primary);
    border-radius: 2px;
    margin-bottom: var(--bb-sm);
}

.bb-cat-card-title {
    font-size: var(--bb-headline-sm-size);
    line-height: var(--bb-headline-sm-lh);
    font-weight: 600;
    color: var(--bb-on-surface);
    margin-bottom: var(--bb-xs);
    transition: color 0.2s;
}

.bb-cat-card:hover .bb-cat-card-title { color: var(--bb-primary); }

.bb-cat-card-title a {
    color: inherit;
    text-decoration: none;
}

.bb-cat-card-meta {
    font-size: var(--bb-caption-size);
    line-height: var(--bb-caption-lh);
    color: var(--bb-on-surface-variant);
    margin-bottom: var(--bb-md);
}

.bb-cat-card-excerpt {
    font-size: var(--bb-body-md-size);
    line-height: var(--bb-body-md-lh);
    color: var(--bb-on-surface-variant);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==========================================================================
   10. Search Styles
   Stitch: h1 display title, subtitle, flat result cards with arrow icon
   ========================================================================== */
.bb-search-page {
    padding-top: var(--bb-xl);
    padding-bottom: var(--bb-xl);
}

.bb-search-header {
    display: flex;
    flex-direction: column;
    gap: var(--bb-md);
    border-bottom: 1px solid var(--bb-outline-variant);
    padding-bottom: var(--bb-lg);
    margin-bottom: var(--bb-xl);
}

@media (min-width: 768px) {
    .bb-search-header {
        flex-direction: row;
        align-items: flex-end;
        justify-content: space-between;
    }
}

/* Search page title — display style, per stitch it's shown prominently */
.bb-search-title {
    display: block;
    font-size: var(--bb-display-mobile-size);
    line-height: var(--bb-display-mobile-lh);
    letter-spacing: var(--bb-display-mobile-ls);
    font-weight: 800;
    color: var(--bb-on-surface);
    margin-bottom: var(--bb-xs);
}

@media (min-width: 768px) {
    .bb-search-title {
        font-size: var(--bb-display-lg-size);
        line-height: var(--bb-display-lg-lh);
    }
}

.bb-search-count {
    font-size: var(--bb-body-md-size);
    color: var(--bb-on-surface-variant);
}

.bb-search-header-actions { flex-shrink: 0; }

.bb-search-refine-form {
    display: flex;
    align-items: center;
    gap: var(--bb-sm);
}

.bb-search-refine-input-wrap {
    display: flex;
    align-items: center;
    gap: var(--bb-sm);
    border: 1px solid var(--bb-outline);
    border-radius: var(--bb-radius-lg);
    padding: var(--bb-sm) var(--bb-md);
    background: var(--bb-surface-container-lowest);
    transition: border-color 0.15s;
}

.bb-search-refine-input-wrap:focus-within { border-color: var(--bb-primary); }

.bb-search-refine-input {
    border: none;
    background: none;
    outline: none;
    font-size: var(--bb-label-md-size);
    color: var(--bb-on-surface);
    min-width: 200px;
}

.bb-search-refine-input::placeholder { color: var(--bb-outline); }

/* Search result cards: flat rows */
.bb-search-results {
    display: flex;
    flex-direction: column;
    gap: var(--bb-md);
}

.bb-result-card {
    background: var(--bb-surface-container-lowest);
    border: 1px solid var(--bb-outline-variant);
    border-radius: var(--bb-radius-lg);
    padding: var(--bb-lg);
    cursor: pointer;
    transition: border-color 0.2s;
}

.bb-result-card:hover { border-color: var(--bb-primary); }

.bb-result-card-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--bb-md);
}

.bb-result-card-left {
    display: flex;
    flex-direction: column;
    gap: var(--bb-xs);
    flex: 1;
}

.bb-result-meta {
    display: flex;
    align-items: center;
    gap: var(--bb-sm);
}

.bb-result-date {
    font-size: var(--bb-caption-size);
    color: var(--bb-on-surface-variant);
}

.bb-result-title {
    font-size: var(--bb-headline-sm-size);
    line-height: var(--bb-headline-sm-lh);
    font-weight: 600;
    color: var(--bb-on-surface);
    transition: color 0.2s;
}

.bb-result-card:hover .bb-result-title { color: var(--bb-primary); }

.bb-result-title a {
    color: inherit;
    text-decoration: none;
}

.bb-result-excerpt {
    font-size: var(--bb-body-md-size);
    color: var(--bb-on-surface-variant);
    max-width: 48rem;
}

.bb-result-arrow {
    flex-shrink: 0;
    color: var(--bb-outline-variant);
    display: flex;
    align-items: center;
    transition: color 0.2s;
}

.bb-result-card:hover .bb-result-arrow { color: var(--bb-primary); }

/* ==========================================================================
   11. 404 Page
   ========================================================================== */
.bb-error-page {
    max-width: var(--bb-container-max);
    margin: 0 auto;
    padding: var(--bb-xl) var(--bb-lg);
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: var(--bb-md);
}

.bb-error-code {
    font-size: 120px;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--bb-outline-variant);
    line-height: 1;
}

.bb-error-title {
    font-size: var(--bb-display-mobile-size);
    font-weight: 800;
    color: var(--bb-on-surface);
}

.bb-error-desc {
    font-size: var(--bb-body-lg-size);
    color: var(--bb-on-surface-variant);
    max-width: 420px;
}

.bb-error-actions {
    display: flex;
    gap: var(--bb-md);
    flex-wrap: wrap;
    justify-content: center;
    margin-top: var(--bb-sm);
}

/* ==========================================================================
   12. Footer
   Stitch: bg-surface-container-low, border-t, flex row: brand+copy left, icons right
   ========================================================================== */
.bb-footer {
    background: var(--bb-surface-container-low);
    border-top: 1px solid var(--bb-outline-variant);
    margin-top: auto;
}

.bb-footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--bb-lg);
    padding: var(--bb-lg) 0;
}

@media (min-width: 768px) {
    .bb-footer-inner {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.bb-footer-brand-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--bb-xs);
}

@media (min-width: 768px) {
    .bb-footer-brand-col { align-items: flex-start; }
}

.bb-footer-brand {
    font-size: var(--bb-headline-sm-size);
    font-weight: 700;
    color: var(--bb-primary);
    text-decoration: none;
}

.bb-footer-copy {
    font-size: var(--bb-caption-size);
    line-height: var(--bb-caption-lh);
    color: var(--bb-on-surface-variant);
}

.bb-footer-links {
    display: flex;
    gap: var(--bb-lg);
    flex-wrap: wrap;
    justify-content: center;
}

.bb-footer-link {
    font-size: var(--bb-caption);
    color: var(--bb-on-surface-variant);
    text-decoration: underline;
    transition: color 0.2s;
}

.bb-footer-link:hover { color: var(--bb-primary); }

/* ==========================================================================
   13. Page (Static page) Styles
   ========================================================================== */
.bb-page-container {
    max-width: 48rem;  /* max-w-3xl */
    margin: 0 auto;
    padding: 80px var(--bb-md) var(--bb-xl);
}

@media (min-width: 768px) {
    .bb-page-container { padding-left: var(--bb-lg); padding-right: var(--bb-lg); }
}

.bb-static-article { display: flex; flex-direction: column; gap: var(--bb-xl); }

.bb-page-header {
    text-align: center;
    margin-bottom: var(--bb-xl);
}

.bb-page-label {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bb-secondary-container);
    color: var(--bb-on-secondary-fixed);
    font-size: var(--bb-label-md-size);
    font-weight: 600;
    letter-spacing: var(--bb-label-md-ls);
    border-radius: var(--bb-radius-full);
    text-transform: uppercase;
    margin-bottom: var(--bb-md);
}

.bb-page-title {
    font-size: var(--bb-display-mobile-size);
    line-height: var(--bb-display-mobile-lh);
    letter-spacing: var(--bb-display-mobile-ls);
    font-weight: 800;
    color: var(--bb-on-surface);
    margin-bottom: var(--bb-md);
}

@media (min-width: 768px) {
    .bb-page-title {
        font-size: var(--bb-display-lg-size);
        line-height: var(--bb-display-lg-lh);
    }
}

.bb-page-image {
    border-radius: var(--bb-radius-xl);
    overflow: hidden;
    border: 1px solid var(--bb-outline-variant);
    aspect-ratio: 16/9;
}

.bb-page-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ==========================================================================
   14. Pagination (CMS standard classes)
   ========================================================================== */
.bb-pagination-wrap {
    margin-top: var(--bb-xl);
    display: flex;
    justify-content: center;
}

.pagination {
    display: flex;
    justify-content: center;
    margin: var(--bb-xl) 0;
}

.pagination-list {
    display: flex;
    align-items: center;
    gap: var(--bb-sm);
    list-style: none;
    padding: 0;
    margin: 0;
}

.pagination-item { list-style: none; }

.pagination-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    white-space: nowrap;
    border: 1px solid var(--pagination-border);
    border-radius: var(--bb-radius-lg);
    font-size: var(--bb-label-md-size);
    font-weight: 600;
    color: var(--pagination-text);
    text-decoration: none;
    transition: all 0.15s ease;
}

.pagination-link:hover {
    border-color: var(--pagination-accent);
    color: var(--pagination-accent);
    background: var(--pagination-hover-bg);
}

.pagination-link--active,
.pagination-item.active .pagination-link {
    background: var(--pagination-accent);
    border-color: var(--pagination-accent);
    color: #fff;
    font-weight: 700;
    pointer-events: none;
}

.pagination-link--prev,
.pagination-link--next {
    width: auto;
}

.pagination-dots { list-style: none; }

.pagination-dots span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    font-size: 14px;
    color: var(--pagination-muted);
    cursor: default;
}

.pagination-prev,
.pagination-next { white-space: nowrap; min-width: auto; padding: 0 var(--bb-sm); }

/* ==========================================================================
   15. Utility Classes
   ========================================================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Buttons */
.bb-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--bb-sm);
    padding: var(--bb-sm) var(--bb-lg);
    background: var(--bb-primary);
    color: var(--bb-on-primary);
    font-size: var(--bb-label-md-size);
    font-weight: 600;
    letter-spacing: var(--bb-label-md-ls);
    border-radius: var(--bb-radius-lg);
    text-decoration: none;
    cursor: pointer;
    border: 1px solid var(--bb-primary);
    transition: opacity 0.2s;
}

.bb-btn-primary:hover { opacity: 0.9; color: var(--bb-on-primary); }

.bb-btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--bb-sm);
    padding: var(--bb-sm) var(--bb-lg);
    background: none;
    color: var(--bb-primary);
    font-size: var(--bb-label-md-size);
    font-weight: 600;
    letter-spacing: var(--bb-label-md-ls);
    border-radius: var(--bb-radius-lg);
    text-decoration: none;
    cursor: pointer;
    border: 1px solid var(--bb-primary);
    transition: background 0.2s, color 0.2s;
}

.bb-btn-outline:hover {
    background: var(--bb-primary);
    color: var(--bb-on-primary);
}

/* ==========================================================================
   16. Prose / Content Styles
   Stitch: body-lg lead, code with JetBrains Mono, pre dark bg, pull-quote
   ========================================================================== */
.bb-prose {
    font-size: var(--bb-body-lg-size);
    line-height: var(--bb-body-lg-lh);
    color: var(--bb-on-surface);
}

.bb-prose > p:first-child {
    font-size: var(--bb-body-lg-size);
    line-height: var(--bb-body-lg-lh);
    color: var(--bb-on-surface);
}

.bb-prose p {
    font-size: var(--bb-body-md-size);
    line-height: 1.75;
    margin-bottom: 1.5em;
    color: var(--bb-on-surface);
}

.bb-prose h2 {
    font-size: var(--bb-headline-md-size);
    line-height: var(--bb-headline-md-lh);
    font-weight: 700;
    color: var(--bb-on-surface);
    margin-top: 2em;
    margin-bottom: 0.75em;
    padding-top: var(--bb-md);
}

.bb-prose h3 {
    font-size: var(--bb-headline-sm-size);
    line-height: var(--bb-headline-sm-lh);
    font-weight: 600;
    margin-top: 1.75em;
    margin-bottom: 0.5em;
}

.bb-prose h4 {
    font-size: var(--bb-body-lg-size);
    font-weight: 700;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

.bb-prose ul, .bb-prose ol {
    padding-left: var(--bb-lg);
    margin-bottom: 1.5em;
    display: flex;
    flex-direction: column;
    gap: var(--bb-sm);
}

.bb-prose ul { list-style: disc; }
.bb-prose ol { list-style: decimal; }

/* Pull quote / blockquote — Stitch: border-left 4px primary */
.bb-prose blockquote {
    border-left: 4px solid var(--bb-primary);
    padding-left: var(--bb-lg);
    margin: var(--bb-md) 0;
    padding-top: var(--bb-md);
    padding-bottom: var(--bb-md);
}

.bb-prose blockquote p {
    font-size: var(--bb-headline-md-size);
    line-height: var(--bb-headline-md-lh);
    font-weight: 700;
    font-style: italic;
    color: var(--bb-primary);
    margin-bottom: 0;
}

.bb-prose a {
    color: var(--bb-primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.bb-prose img {
    max-width: 100%;
    border-radius: var(--bb-radius-xl);
    border: 1px solid var(--bb-outline-variant);
    margin: 1.5em 0;
}

/* Inline code — Stitch: bg #f1f5f9, JetBrains Mono */
.bb-prose code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    background: #f1f5f9;
    padding: 2px 4px;
    border-radius: var(--bb-radius);
    font-size: 0.875em;
    color: var(--bb-primary);
}

/* Code blocks — Stitch: bg #0F172A dark, rounded-lg */
.bb-prose pre {
    background: #0F172A;
    color: #f8fafc;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 14px;
    line-height: 1.6;
    padding: var(--bb-lg);
    border-radius: var(--bb-radius-lg);
    overflow-x: auto;
    margin-bottom: var(--bb-lg);
}

.bb-prose pre code {
    background: none;
    padding: 0;
    color: inherit;
    border-radius: 0;
    font-size: inherit;
}

.bb-prose table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: var(--bb-body-md-size);
}

.bb-prose th {
    background: var(--bb-surface-container-low);
    padding: var(--bb-sm) var(--bb-md);
    text-align: left;
    font-weight: 700;
    border-bottom: 2px solid var(--bb-outline-variant);
}

.bb-prose td {
    padding: var(--bb-sm) var(--bb-md);
    border-bottom: 1px solid var(--bb-outline-variant);
}

.bb-prose hr {
    border: none;
    border-top: 1px solid var(--bb-outline-variant);
    margin: 2.5em 0;
}

/* ==========================================================================
   17. Responsive
   ========================================================================== */
@media (max-width: 768px) {
    .bb-nav-links { display: none; }
    .bb-hamburger { display: flex; }
    .bb-mobile-drawer { display: flex; }
    .bb-search-toggle { display: flex; }

    .bb-container { padding-left: var(--bb-md); padding-right: var(--bb-md); }

    .bb-article-image { height: 200px; }

    .bb-error-code { font-size: 80px; }
    .bb-error-actions { flex-direction: column; }

    .bb-search-header { flex-direction: column; align-items: flex-start; }
    .bb-search-refine-form { flex-direction: column; align-items: stretch; }
    .bb-search-refine-input { min-width: 0; width: 100%; }
}

@media (min-width: 769px) {
    .bb-hamburger  { display: none !important; }
    .bb-mobile-drawer { display: none !important; }
}