/*
 * Lab blog redesign — paper ground, featured 1+2, archive, post chrome.
 * Linked from lab blog pages. Survives npm run lab:sync (lives under _lab/).
 *
 * Canonical POST layout: see _lab/blog-post-template.html
 * (title → byline → meta → header art → TOC → prose → related).
 * Reference implementation: blog/patient-to-agent-healthcare-future/
 */

:root {
    --blog-type-col: min(740px, 100%);
    --blog-page-max: 1120px;
}

/* Paper body already paints #f0ebe4 via .alpha-paper-body; keep blog surfaces transparent */
body.arlo-blog-body {
    min-height: 100vh;
    min-height: 100dvh;
}

body.arlo-blog-body .arlo-site-header {
    position: relative;
    z-index: 3;
}

.arlo-blog-main {
    position: relative;
    z-index: 2;
    /* Match cursor.com/blog first-section padding-top (112px) */
    padding: 112px clamp(20px, 5vw, 48px) 0;
}

.arlo-blog-shell {
    max-width: var(--blog-page-max);
    margin: 0 auto;
}

/* Featured 1 + 2 */
.arlo-blog-featured {
    display: grid;
    gap: clamp(28px, 4vw, 40px);
    margin: 0 0 clamp(48px, 7vh, 72px);
}

@media (min-width: 900px) {
    .arlo-blog-featured {
        grid-template-columns: 1.35fr 1fr;
        align-items: stretch;
    }
}

.arlo-blog-featured-lead {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    min-width: 0;
}

.arlo-blog-featured-lead .arlo-blog-card-art {
    aspect-ratio: 16 / 10;
    flex: 1 1 auto;
    min-height: 220px;
}

.arlo-blog-featured-side {
    display: grid;
    gap: clamp(24px, 3vw, 32px);
    grid-template-columns: 1fr;
}

@media (min-width: 560px) and (max-width: 899px) {
    .arlo-blog-featured-side {
        grid-template-columns: 1fr 1fr;
    }
}

.arlo-blog-card {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    min-width: 0;
}

.arlo-blog-card-art {
    aspect-ratio: 16 / 10;
    background: #e4ddd3;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    border-radius: var(--r-sm);
    overflow: hidden;
    transition: opacity 0.2s ease;
}

.arlo-blog-card:hover .arlo-blog-card-art,
.arlo-blog-featured-lead:hover .arlo-blog-card-art {
    opacity: 0.94;
}

.arlo-blog-card-meta {
    display: block;
    margin-top: 14px;
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0;
    color: var(--ink-2);
}

.arlo-blog-card-title {
    margin: 8px 0 0;
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.2;
    color: var(--ink);
    transition: opacity 0.15s ease;
}

.arlo-blog-featured-lead .arlo-blog-card-title {
    font-size: clamp(1.5rem, 2.6vw, 2rem);
    letter-spacing: -0.03em;
    max-width: none;
    width: 100%;
}

.arlo-blog-card:hover .arlo-blog-card-title,
.arlo-blog-featured-lead:hover .arlo-blog-card-title {
    opacity: 0.7;
}

.arlo-blog-card-dek {
    margin: 10px 0 0;
    max-width: 42ch;
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--ink-2);
}

.arlo-blog-featured-lead .arlo-blog-card-dek {
    max-width: none;
    width: 100%;
}

.arlo-blog-featured-side .arlo-blog-card-title {
    font-size: 1.0625rem;
}

.arlo-blog-featured-side .arlo-blog-card-art {
    aspect-ratio: 16 / 11;
}

/* Archive list: date · type · title */
.arlo-blog-archive {
    margin: 0 0 clamp(64px, 10vh, 96px);
}

.arlo-blog-archive-heading {
    margin: 0 0 16px;
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    text-transform: none;
    color: var(--ink-2);
}

.arlo-blog-archive-list {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--rule);
}

.arlo-blog-archive-list li {
    border-bottom: 1px solid var(--rule);
}

.arlo-blog-archive-list a {
    display: grid;
    grid-template-columns: 7.5rem 5.5rem minmax(0, 1fr) auto;
    gap: 12px 20px;
    align-items: baseline;
    padding: 16px 0;
    text-decoration: none;
    color: var(--ink);
}

.arlo-blog-archive-list a:hover .arlo-blog-archive-title {
    opacity: 0.65;
}

.arlo-blog-archive-date,
.arlo-blog-archive-type,
.arlo-blog-archive-authors {
    font-size: 0.8125rem;
    color: var(--ink-2);
    white-space: nowrap;
}

.arlo-blog-archive-authors {
    justify-self: end;
    text-align: right;
}

.arlo-blog-archive-type {
    font-weight: 500;
    letter-spacing: 0.02em;
}

.arlo-blog-archive-title {
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: -0.015em;
    line-height: 1.35;
    transition: opacity 0.15s ease;
}

@media (max-width: 900px) {
    .arlo-blog-archive-list a {
        grid-template-columns: 7.5rem 5.5rem minmax(0, 1fr);
    }

    .arlo-blog-archive-authors {
        grid-column: 1 / -1;
        justify-self: start;
        text-align: left;
        white-space: normal;
    }
}

@media (max-width: 640px) {
    .arlo-blog-archive-list a {
        grid-template-columns: auto auto 1fr;
        gap: 6px 10px;
        padding: 18px 0;
    }

    .arlo-blog-archive-title,
    .arlo-blog-archive-authors {
        grid-column: 1 / -1;
    }
}

/* ---------- Post page ---------- */

.arlo-blog-post-header-art {
    width: 100%;
    margin: 28px 0 8px;
    aspect-ratio: 21 / 9;
    max-height: 360px;
    background: #e4ddd3;
    background-position: center;
    background-size: cover;
    border-radius: var(--r-sm);
    overflow: hidden;
}

.arlo-blog-post-article {
    max-width: var(--blog-type-col);
    margin: 0 auto;
    padding: clamp(28px, 4vh, 48px) 0 clamp(48px, 8vh, 80px);
}

.arlo-blog-post-title {
    margin: 0;
    font-family: var(--font-sans);
    font-size: clamp(2rem, 4.5vw, 2.75rem);
    font-weight: 600;
    letter-spacing: -0.035em;
    line-height: 1.08;
    color: var(--ink);
    text-wrap: pretty;
}

.arlo-blog-byline {
    margin: 18px 0 0;
    font-size: 0.9375rem;
    color: var(--ink);
}

.arlo-blog-byline a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid transparent;
}

.arlo-blog-byline a:hover {
    border-bottom-color: rgba(26, 23, 20, 0.28);
}

.arlo-blog-post-meta {
    margin: 14px 0 0;
    font-size: 0.8125rem;
    color: var(--ink-2);
    letter-spacing: 0.01em;
}

.arlo-blog-post-meta .arlo-blog-meta-sep {
    margin: 0 0.35em;
    opacity: 0.55;
}

/* Collapsible TOC */
.arlo-blog-toc {
    margin: 32px 0 36px;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    font-family: var(--font-sans);
}

.arlo-blog-toc > summary {
    list-style: none;
    cursor: pointer;
    padding: 14px 0;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-2);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.arlo-blog-toc > summary::-webkit-details-marker {
    display: none;
}

.arlo-blog-toc > summary::after {
    content: "+";
    font-size: 1rem;
    font-weight: 400;
    line-height: 1;
    color: var(--ink);
}

.arlo-blog-toc[open] > summary::after {
    content: "−";
}

.arlo-blog-toc-list {
    list-style: none;
    margin: 0 0 16px;
    padding: 0 0 4px;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.arlo-blog-toc-list a {
    color: var(--ink);
    text-decoration: none;
    font-size: 0.9375rem;
    line-height: 1.4;
}

.arlo-blog-toc-list a:hover {
    opacity: 0.65;
}

/* Prose column — reuse alpha-blog-prose tokens, quiet paper */
.arlo-blog-body .alpha-blog-prose {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--ink);
}

.arlo-blog-body .alpha-blog-prose h2 {
    margin: 2.4em 0 0.7em;
    font-family: var(--font-sans);
    font-size: 1.35rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.25;
    color: var(--ink);
    scroll-margin-top: 72px;
}

.arlo-blog-body .alpha-blog-prose h2:first-child {
    margin-top: 0;
}

.arlo-blog-body .alpha-blog-prose p {
    margin: 0 0 1.15em;
}

.arlo-blog-body .alpha-blog-prose img {
    display: block;
    width: 100%;
    height: auto;
    margin: 1.6em 0;
    border-radius: var(--r-sm);
}

.arlo-blog-body .alpha-blog-prose .arlo-blog-figure {
    margin: 2.2em 0 1.4em;
}

.arlo-blog-body .alpha-blog-prose .arlo-blog-figure img {
    margin: 0;
}

.arlo-blog-body .alpha-blog-prose .arlo-blog-figure--embed {
    margin: 2.4em 0 1.6em;
    background: #f0ebe4;
    border-radius: var(--r-sm);
    overflow: hidden;
}

.arlo-blog-body .alpha-blog-prose .arlo-blog-figure--embed iframe {
    display: block;
    width: 100%;
    aspect-ratio: 2 / 1;
    height: auto;
    border: 0;
    background: #f0ebe4;
}

.arlo-blog-body .alpha-blog-prose .arlo-blog-callout {
    margin: 1.75em 0;
    padding: 0.95rem 1.25rem;
    text-align: center;
    font-size: 0.975rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--ink);
    background: rgba(26, 23, 20, 0.05);
    border-radius: 9999px;
}

.arlo-blog-body .alpha-blog-prose .arlo-blog-footnote {
    margin-top: 2.5em;
    font-size: 0.875rem;
    line-height: 1.55;
    color: var(--ink-2);
}

.arlo-blog-body .alpha-blog-prose blockquote {
    margin: 1.6em 0;
    padding: 0 0 0 1.1em;
    border-left: 2px solid rgba(26, 23, 20, 0.18);
    color: var(--ink-2);
}

.arlo-blog-body .alpha-blog-prose a {
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* Related */
.arlo-blog-related {
    margin: 56px 0 0;
    padding-top: 36px;
    border-top: 1px solid var(--rule);
}

.arlo-blog-related-title {
    margin: 0 0 22px;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    text-transform: none;
    color: var(--ink-2);
}

.arlo-blog-related-grid {
    display: grid;
    gap: 28px;
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .arlo-blog-related-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.arlo-blog-related .arlo-blog-card-art {
    aspect-ratio: 16 / 11;
}

.arlo-blog-related .arlo-blog-card-title {
    font-size: 1.0625rem;
}

/* Footer on blog: sit on paper */
.arlo-blog-body .alpha-site-footer {
    position: relative;
    z-index: 2;
}