/* ─────────────────────────────────────────────────────────────────────────────
   Postenbox — front-end theme
   Single stylesheet replacing basscss.min.css + style.css
   ───────────────────────────────────────────────────────────────────────────── */

:root {
    --text:          #1a1a1a;
    --muted:         #6b7280;
    --border:        #e5e7eb;
    --accent:        #1a1a1a;
    --accent-hover:  #333;
    --bg:            #fff;
    --radius:        4px;
    --container:     720px;
    --container-wide:1100px;
}

/* ── Reset ────────────────────────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }

html { font-size: 100%; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ── Layout ───────────────────────────────────────────────────────────────── */

.container {
    max-width: var(--container-wide);
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

.container-narrow {
    max-width: var(--container);
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

.main {
    padding-top: 2.5rem;
    padding-bottom: 4rem;
}

/* ── Site header ──────────────────────────────────────────────────────────── */

.site-header {
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.site-header-inner {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 1.25rem;
    display: flex;
    align-items: center;
}

.site-logo {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -.01em;
    color: var(--text);
    text-decoration: none;
}

.site-logo:hover { color: var(--accent-hover); }

/* ── Site footer ──────────────────────────────────────────────────────────── */

.site-footer {
    border-top: 1px solid var(--border);
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-inner {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 1.25rem;
    font-size: .875rem;
    color: var(--muted);
}

/* ── Section title ────────────────────────────────────────────────────────── */

.section-title {
    font-size: 1.375rem;
    font-weight: 700;
    margin: 0 0 1.75rem;
}

/* ── Article list (home / category) ──────────────────────────────────────── */

.article-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.article-card {
    display: block;
    border-bottom: 1px solid var(--border);
    padding-bottom: 2rem;
    text-decoration: none;
    color: inherit;
}

.article-card:last-child {
    border-bottom: none;
}

.article-card-image {
    margin-bottom: 1rem;
    border-radius: var(--radius);
    overflow: hidden;
}

.article-card-image img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.article-category {
    font-size: .8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--muted);
    margin-bottom: .4rem;
}

.article-card-title {
    font-size: 1.375rem;
    font-weight: 700;
    line-height: 1.3;
    margin: 0 0 .4rem;
}

.article-card:hover .article-card-title {
    text-decoration: underline;
    text-decoration-thickness: 1px;
}

.article-card-summary {
    font-size: 1rem;
    color: var(--muted);
    margin: 0 0 .6rem;
    line-height: 1.5;
}

.article-date {
    font-size: .8125rem;
    color: var(--muted);
}

/* ── Single article ───────────────────────────────────────────────────────── */

.single-article {
    /* wrapper */
}

.single-article-header {
    padding-top: 1rem;
    padding-bottom: 1.5rem;
}

.single-article-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -.02em;
    margin: 0 0 .75rem;
}

.single-article-summary {
    font-size: 1.2rem;
    color: var(--muted);
    line-height: 1.5;
    margin: 0 0 .75rem;
}

.single-article-image {
    margin: 1.5rem 0 2rem;
}

.single-article-image img {
    width: 100%;
    max-height: 520px;
    object-fit: cover;
    border-radius: var(--radius);
}

/* ── Article body ─────────────────────────────────────────────────────────── */

.article-content {
    font-family: Georgia, 'Times New Roman', Times, serif;
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text);
    padding-bottom: 2rem;
}

.article-content p {
    margin: 0 0 1.4em;
}

.article-content h2 {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 2em 0 .6em;
    line-height: 1.25;
}

.article-content h3 {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    margin: 1.75em 0 .5em;
    line-height: 1.25;
}

.article-content ul,
.article-content ol {
    padding-left: 1.5em;
    margin: 0 0 1.4em;
}

.article-content li {
    margin-bottom: .4em;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 1.5em 0;
}

.article-content a {
    color: var(--text);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

.article-content a:hover {
    color: var(--accent-hover);
}

.article-content blockquote {
    border-left: 3px solid var(--border);
    margin: 1.5em 0;
    padding: .5em 1.25em;
    color: var(--muted);
    font-style: italic;
}

/* ── Utility ──────────────────────────────────────────────────────────────── */

.mb2 { margin-bottom: .5rem; }
.mb3 { margin-bottom: 1rem; }
.mt2 { margin-top: .5rem; }

/* ── Responsive ───────────────────────────────────────────────────────────── */

@media (min-width: 640px) {
    .article-list {
        gap: 2.5rem;
    }

    .article-card {
        display: grid;
        grid-template-columns: 200px 1fr;
        gap: 1.25rem;
        align-items: start;
    }

    .article-card-image {
        margin-bottom: 0;
    }

    .article-card-image img {
        aspect-ratio: 4/3;
    }
}

@media (min-width: 900px) {
    .article-content {
        font-size: 1.175rem;
    }
}