/* ============================================
   NUMORA BLOG - Standalone CSS
   ============================================
   Self-contained stylesheet for the blog.
   Does NOT import from the SPA's CSS.
   Matches Numora brand: colors, fonts, spacing.
   ============================================ */

/* ============================================
   CSS RESET (minimal)
   ============================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ol, ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* ============================================
   DESIGN TOKENS
   ============================================ */
:root {
    /* Colors */
    --blog-primary: #d67d26;
    --blog-primary-light: #e8a45c;
    --blog-primary-dark: #b87333;
    --blog-primary-darker: #8b4513;
    --blog-text: #3a2f1a;
    --blog-text-medium: rgba(58, 47, 26, 0.85);
    --blog-text-light: rgba(58, 47, 26, 0.6);
    --blog-text-muted: rgba(58, 47, 26, 0.4);
    --blog-bg: #faf8f3;
    --blog-bg-white: #ffffff;
    --blog-border: rgba(184, 115, 51, 0.15);
    --blog-border-medium: rgba(184, 115, 51, 0.25);

    /* Typography */
    --blog-font-heading: 'Cinzel', Georgia, serif;
    --blog-font-body: 'Crimson Text', Georgia, serif;
    --blog-font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Spacing */
    --blog-container: 720px;
    --blog-container-wide: 1100px;
    --blog-gutter: 1.25rem;

    /* Shadows */
    --blog-shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --blog-shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --blog-shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
}

/* ============================================
   BASE TYPOGRAPHY
   ============================================ */
body {
    font-family: var(--blog-font-body);
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--blog-text);
    background-color: var(--blog-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--blog-font-heading);
    font-weight: 500;
    line-height: 1.3;
    color: var(--blog-text);
    letter-spacing: 0.01em;
}

/* ============================================
   READING PROGRESS BAR
   ============================================ */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--blog-primary), var(--blog-primary-light));
    z-index: 9999;
    transition: width 50ms linear;
}

/* ============================================
   HEADER
   ============================================ */
.blog-header {
    background-color: var(--blog-bg-white);
    border-bottom: 1px solid var(--blog-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.blog-header-inner {
    max-width: var(--blog-container-wide);
    margin: 0 auto;
    padding: 0.75rem var(--blog-gutter);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.blog-header-logo img {
    height: 32px;
    width: auto;
}

.blog-header-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.blog-header-link {
    font-family: var(--blog-font-ui);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--blog-text-medium);
    transition: color 200ms ease;
}

.blog-header-link:hover {
    color: var(--blog-primary);
}

.blog-header-lang {
    font-family: var(--blog-font-ui);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--blog-primary);
    border: 1.5px solid var(--blog-primary);
    border-radius: 4px;
    padding: 0.2rem 0.5rem;
    letter-spacing: 0.05em;
    transition: all 200ms ease;
}

.blog-header-lang:hover {
    background-color: var(--blog-primary);
    color: var(--blog-bg-white);
}

/* ============================================
   BREADCRUMBS
   ============================================ */
.breadcrumbs {
    max-width: var(--blog-container);
    margin: 1.5rem auto 0;
    padding: 0 var(--blog-gutter);
}

.breadcrumbs ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--blog-font-ui);
    font-size: 0.8rem;
    color: var(--blog-text-light);
}

.breadcrumbs li:not(:last-child)::after {
    content: "/";
    margin-left: 0.5rem;
    color: var(--blog-text-muted);
}

.breadcrumbs a {
    color: var(--blog-text-light);
    transition: color 200ms ease;
}

.breadcrumbs a:hover {
    color: var(--blog-primary);
}

.breadcrumbs [aria-current="page"] {
    color: var(--blog-text-medium);
    font-weight: 500;
}

/* ============================================
   ARTICLE HERO
   ============================================ */
.article {
    max-width: var(--blog-container-wide);
    margin: 0 auto;
    padding: 0 var(--blog-gutter);
}

.article-hero {
    max-width: var(--blog-container);
    margin: 2rem auto 0;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--blog-border);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.article-tag {
    font-family: var(--blog-font-ui);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--blog-primary-dark);
    background-color: rgba(214, 125, 38, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
}

.article-title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--blog-text);
}

.article-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    line-height: 1.6;
    color: var(--blog-text-medium);
    margin-bottom: 1.5rem;
}

.article-meta {
    font-family: var(--blog-font-ui);
    font-size: 0.8rem;
    color: var(--blog-text-light);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.article-meta-separator {
    color: var(--blog-text-muted);
}

/* ============================================
   ARTICLE LAYOUT (ToC + Content)
   ============================================ */
.article-layout {
    max-width: var(--blog-container-wide);
    margin: 2rem auto 0;
    display: flex;
    gap: 3rem;
}

/* ============================================
   TABLE OF CONTENTS
   ============================================ */
.toc {
    display: none;
}

@media (min-width: 1024px) {
    .toc {
        display: block;
        width: 260px;
        flex-shrink: 0;
    }

    .toc-inner {
        position: sticky;
        top: 80px;
    }
}

.toc-title {
    font-family: var(--blog-font-ui);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--blog-text-light);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--blog-border);
}

.toc-list {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.toc-item--h3 {
    padding-left: 1rem;
}

.toc-link {
    font-family: var(--blog-font-ui);
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--blog-text-light);
    display: block;
    padding: 0.3rem 0.5rem;
    border-left: 2px solid transparent;
    border-radius: 0 4px 4px 0;
    transition: all 200ms ease;
}

.toc-link:hover {
    color: var(--blog-primary);
    background-color: rgba(214, 125, 38, 0.05);
}

.toc-link.active {
    color: var(--blog-primary);
    border-left-color: var(--blog-primary);
    background-color: rgba(214, 125, 38, 0.08);
    font-weight: 500;
}

/* ============================================
   ARTICLE CONTENT (Prose)
   ============================================ */
.article-content {
    max-width: var(--blog-container);
    flex: 1;
    min-width: 0;
}

.article-content h2 {
    font-size: clamp(1.4rem, 3vw, 1.75rem);
    margin-top: 3rem;
    margin-bottom: 1rem;
    padding-top: 1rem;
}

.article-content h3 {
    font-size: clamp(1.15rem, 2.5vw, 1.35rem);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.article-content p {
    margin-bottom: 1.25rem;
    color: var(--blog-text-medium);
}

.article-content strong {
    color: var(--blog-text);
    font-weight: 600;
}

.article-content em {
    font-style: italic;
}

.article-content a {
    color: var(--blog-primary);
    text-decoration: underline;
    text-decoration-color: rgba(214, 125, 38, 0.3);
    text-underline-offset: 3px;
    transition: text-decoration-color 200ms ease;
}

.article-content a:hover {
    text-decoration-color: var(--blog-primary);
}

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

.article-content ul { list-style-type: disc; }
.article-content ol { list-style-type: decimal; }

.article-content li {
    margin-bottom: 0.5rem;
    color: var(--blog-text-medium);
}

.article-content li::marker {
    color: var(--blog-primary);
}

.article-content blockquote {
    border-left: 3px solid var(--blog-primary);
    background-color: rgba(214, 125, 38, 0.05);
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: var(--blog-text-medium);
}

.article-content blockquote p:last-child {
    margin-bottom: 0;
}

.article-content img {
    border-radius: 8px;
    margin: 1.5rem 0;
    box-shadow: var(--blog-shadow-sm);
}

.article-content hr {
    border: none;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--blog-border-medium), transparent);
    margin: 2.5rem 0;
}

.article-content code {
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    background-color: rgba(214, 125, 38, 0.08);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    color: var(--blog-primary-darker);
}

.article-content pre {
    background-color: #2d2a24;
    color: #f0e6d6;
    padding: 1.25rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
    font-size: 0.875rem;
    line-height: 1.6;
}

.article-content pre code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-family: var(--blog-font-body);
    font-size: 1.05rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--blog-shadow-sm);
}

.article-content thead {
    background-color: var(--blog-primary);
}

.article-content thead th {
    color: #ffffff;
    font-family: var(--blog-font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.875rem 1.25rem;
    text-align: left;
    border: none;
}

.article-content tbody tr {
    border-bottom: 1px solid var(--blog-border);
    transition: background-color 0.15s ease;
}

.article-content tbody tr:last-child {
    border-bottom: none;
}

.article-content tbody tr:nth-child(even) {
    background-color: rgba(214, 125, 38, 0.04);
}

.article-content tbody tr:hover {
    background-color: rgba(214, 125, 38, 0.08);
}

.article-content tbody td {
    padding: 0.8rem 1.25rem;
    color: var(--blog-text-medium);
    vertical-align: top;
    line-height: 1.55;
}

.article-content tbody td strong {
    color: var(--blog-text);
}

/* Dark mode */
[data-theme="dark"] .article-content thead {
    background-color: var(--blog-primary-dark);
}

[data-theme="dark"] .article-content tbody tr:nth-child(even) {
    background-color: rgba(214, 125, 38, 0.07);
}

[data-theme="dark"] .article-content tbody tr:hover {
    background-color: rgba(214, 125, 38, 0.12);
}

/* ============================================
   SHARE BUTTONS
   ============================================ */
.share-section {
    max-width: var(--blog-container);
    margin: 3rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid var(--blog-border);
}

.share-title {
    font-family: var(--blog-font-ui);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--blog-text-light);
    margin-bottom: 1rem;
}

.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--blog-font-ui);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--blog-border-medium);
    color: var(--blog-text-medium);
    background-color: var(--blog-bg-white);
    transition: all 200ms ease;
}

.share-btn:hover {
    border-color: var(--blog-primary);
    color: var(--blog-primary);
    box-shadow: var(--blog-shadow-sm);
}

.share-btn svg {
    width: 16px;
    height: 16px;
}

.share-btn--whatsapp:hover { color: #25D366; border-color: #25D366; }
.share-btn--twitter:hover { color: #1DA1F2; border-color: #1DA1F2; }
.share-btn--linkedin:hover { color: #0077B5; border-color: #0077B5; }

/* ============================================
   AUTHOR BIO
   ============================================ */
.author-bio {
    max-width: var(--blog-container);
    margin: 2.5rem auto 0;
}

.author-bio-inner {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    background-color: var(--blog-bg-white);
    border: 1px solid var(--blog-border);
    border-radius: 12px;
    padding: 1.5rem;
}

.author-bio-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    flex-shrink: 0;
    object-fit: contain;
    background-color: var(--blog-bg);
    padding: 4px;
}

.author-bio-name {
    font-family: var(--blog-font-ui);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--blog-text);
    margin-bottom: 0.4rem;
}

.author-bio-text {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--blog-text-medium);
    margin-bottom: 0.5rem;
}

.author-bio-link {
    font-family: var(--blog-font-ui);
    font-size: 0.8rem;
    color: var(--blog-primary);
    font-weight: 500;
}

.author-bio-link:hover {
    text-decoration: underline;
}

/* ============================================
   CTA SECTION
   ============================================ */
.blog-cta {
    max-width: var(--blog-container);
    margin: 3rem auto;
}

.blog-cta-inner {
    text-align: center;
    background: linear-gradient(135deg, #fdf6ee, #faf8f3);
    border: 1px solid var(--blog-border-medium);
    border-radius: 16px;
    padding: 2.5rem 2rem;
}

.blog-cta-decoration {
    font-size: 1.5rem;
    color: var(--blog-primary);
    margin-bottom: 0.75rem;
}

.blog-cta-title {
    font-size: clamp(1.25rem, 3vw, 1.6rem);
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--blog-text);
}

.blog-cta-text {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--blog-text-medium);
    max-width: 500px;
    margin: 0 auto 1.5rem;
}

.blog-cta-button {
    display: inline-block;
    font-family: var(--blog-font-ui);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--blog-bg-white);
    background: linear-gradient(135deg, var(--blog-primary), var(--blog-primary-dark));
    padding: 0.85rem 2rem;
    border-radius: 999px;
    box-shadow: 0 4px 12px rgba(214, 125, 38, 0.3);
    transition: all 200ms ease;
    letter-spacing: 0.02em;
}

.blog-cta-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(214, 125, 38, 0.4);
}

/* ============================================
   RELATED ARTICLES
   ============================================ */
.related-articles {
    max-width: var(--blog-container);
    margin: 0 auto 3rem;
}

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

.related-articles-grid {
    display: grid;
    gap: 1rem;
}

@media (min-width: 640px) {
    .related-articles-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

.related-card {
    display: block;
    background-color: var(--blog-bg-white);
    border: 1px solid var(--blog-border);
    border-radius: 12px;
    padding: 1.25rem;
    transition: all 200ms ease;
}

.related-card:hover {
    border-color: var(--blog-primary);
    box-shadow: var(--blog-shadow-md);
    transform: translateY(-2px);
}

.related-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.related-card-description {
    font-size: 0.9rem;
    color: var(--blog-text-light);
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.related-card-link {
    font-family: var(--blog-font-ui);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--blog-primary);
}

/* ============================================
   BLOG LIST PAGE
   ============================================ */
.blog-list {
    max-width: var(--blog-container-wide);
    margin: 0 auto;
    padding: 0 var(--blog-gutter);
}

.blog-list-hero {
    text-align: center;
    padding: 3rem 0 2rem;
    border-bottom: 1px solid var(--blog-border);
    margin-bottom: 2rem;
}

.blog-list-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.blog-list-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--blog-text-medium);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.blog-list-grid {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

@media (min-width: 640px) {
    .blog-list-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

.blog-card {
    display: block;
    background-color: var(--blog-bg-white);
    border: 1px solid var(--blog-border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 200ms ease;
}

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

.blog-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.75rem;
}

.blog-card-tag {
    font-family: var(--blog-font-ui);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--blog-primary-dark);
    background-color: rgba(214, 125, 38, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
}

.blog-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    color: var(--blog-text);
}

.blog-card-description {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--blog-text-medium);
    margin-bottom: 1rem;
}

.blog-card-meta {
    font-family: var(--blog-font-ui);
    font-size: 0.75rem;
    color: var(--blog-text-light);
    display: flex;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.blog-card-link {
    font-family: var(--blog-font-ui);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--blog-primary);
}

.blog-list-empty {
    text-align: center;
    color: var(--blog-text-light);
    padding: 3rem 0;
    font-size: 1rem;
}

/* ============================================
   FOOTER
   ============================================ */
.blog-footer {
    background-color: var(--blog-bg-white);
    border-top: 1px solid var(--blog-border);
    margin-top: 3rem;
}

.blog-footer-inner {
    max-width: var(--blog-container-wide);
    margin: 0 auto;
    padding: 2.5rem var(--blog-gutter);
    text-align: center;
}

.blog-footer-logo img {
    height: 28px;
    width: auto;
    margin: 0 auto 0.75rem;
}

.blog-footer-tagline {
    font-size: 0.85rem;
    color: var(--blog-text-light);
    margin-bottom: 1.25rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.blog-footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 1.25rem;
}

.blog-footer-links a {
    font-family: var(--blog-font-ui);
    font-size: 0.8rem;
    color: var(--blog-text-light);
    transition: color 200ms ease;
}

.blog-footer-links a:hover {
    color: var(--blog-primary);
}

.blog-footer-social {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.blog-footer-social a {
    color: var(--blog-text-light);
    transition: color 200ms ease;
}

.blog-footer-social a:hover {
    color: var(--blog-primary);
}

.blog-footer-copy {
    font-family: var(--blog-font-ui);
    font-size: 0.75rem;
    color: var(--blog-text-muted);
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .reading-progress,
    .blog-header,
    .breadcrumbs,
    .toc,
    .share-section,
    .blog-cta,
    .related-articles,
    .blog-footer { display: none !important; }

    body { font-size: 12pt; color: #000; background: #fff; }
    .article-content a { color: #000; text-decoration: underline; }
    .article-content a::after { content: " (" attr(href) ")"; font-size: 0.8em; }
}

/* ============================================
   DARK MODE (toggle + OS preference fallback)
   ============================================ */
[data-theme="dark"] {
    --blog-text: #e8dcc8;
    --blog-text-medium: rgba(232, 220, 200, 0.85);
    --blog-text-light: rgba(232, 220, 200, 0.6);
    --blog-text-muted: rgba(232, 220, 200, 0.4);
    --blog-bg: #1a1612;
    --blog-bg-white: #2a2520;
    --blog-border: rgba(214, 125, 38, 0.2);
    --blog-border-medium: rgba(214, 125, 38, 0.3);
    --blog-shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
    --blog-shadow-md: 0 4px 12px rgba(0,0,0,0.25);
    --blog-shadow-lg: 0 8px 24px rgba(0,0,0,0.3);
}

[data-theme="dark"] .article-content pre {
    background-color: #151210;
}

[data-theme="dark"] .blog-cta-inner {
    background: linear-gradient(135deg, #2a2520, #1a1612);
}

/* Theme Toggle Button */
.blog-theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    color: var(--blog-text-medium);
    transition: color 200ms ease, background-color 200ms ease;
    padding: 0;
}

.blog-theme-toggle:hover {
    color: var(--blog-primary);
    background-color: rgba(214, 125, 38, 0.08);
}

.blog-theme-toggle svg {
    width: 18px;
    height: 18px;
}

/* Sun icon hidden in light mode, Moon icon shown */
.blog-theme-toggle .icon-sun { display: none; }
.blog-theme-toggle .icon-moon { display: block; }

/* In dark mode: show Sun, hide Moon */
[data-theme="dark"] .blog-theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .blog-theme-toggle .icon-moon { display: none; }