/* BASE */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
margin: 0;
background: var(--color-paper);
color: var(--color-ink);
font-family: var(--font-body);
font-size: var(--step-0);
line-height: 1.6;
-webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--color-accent); text-decoration-thickness: 1.5px; text-underline-offset: 2px; }
a:hover { color: var(--color-accent-hover); }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; margin: 0 0 0.5em; color: var(--color-ink); }
p { margin: 0 0 1.2em; }
ul { margin: 0; padding: 0; list-style: none; }
button, input { font-family: inherit; font-size: inherit; }

/* keyboard accessibility */
a:focus-visible, button:focus-visible, input:focus-visible, label:focus-visible {
outline: 2.5px solid var(--color-accent-secondary);
outline-offset: 2px;
border-radius: 2px;
}
.skip-link {
position: absolute; left: -9999px; top: 0;
background: var(--color-deep); color: var(--color-deep-text);
padding: 0.75em 1.25em; z-index: 100; border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

@media (prefers-reduced-motion: reduce) {
* { animation: none !important; transition: none !important; }
}

/* shared centered container, reused inside banner / page / footer
    so everything lines up on the same left/right edges */
.wrap {
max-width: var(--content-width);
margin-inline: auto;
padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}


/* BANNER */

.site-banner {
position: relative;
background: var(--color-deep);
color: var(--color-deep-text);
overflow: hidden;
}
.site-banner .wrap {
position: relative;
z-index: 1;
padding-block: 3rem 2.5rem;
}
.site-banner .topo-pattern {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
opacity: 0.16;
}
.site-title {
font-size: var(--step-4);
font-weight: 600;
letter-spacing: -0.01em;
margin: 0;
}
.site-title a { color: inherit; text-decoration: none; }
.site-tagline {
font-family: var(--font-body);
font-size: var(--step-1);
color: var(--color-deep-text);
margin: 0.5rem 0 0;
max-width: 40ch;
}

/* PAGE WRAP + NAV */
.page-wrap { padding-block: 0 3.5rem; }

.site-nav {
display: flex;
align-items: center;
justify-content: space-between;
gap: 1rem;
padding-block: 1.1rem;
border-bottom: 1px solid var(--color-line);
margin-bottom: 3rem;
position: relative;
}
.nav-links {
display: flex;
flex-wrap: wrap;
gap: 1.75rem;
}
.nav-links a {
color: var(--color-ink);
text-decoration: none;
font-weight: 500;
padding-block: 0.25rem;
border-bottom: 2px solid transparent;
}
.nav-links a:hover,
.nav-links a[aria-current="page"] {
border-bottom-color: var(--color-accent-secondary);
}
.nav-search {
display: inline-flex;
align-items: center;
gap: 0.4rem;
background: none;
border: 1px solid var(--color-line);
border-radius: 999px;
padding: 0.45rem 0.9rem;
color: var(--color-ink-soft);
cursor: pointer;
}
.nav-search:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* mobile nav toggle — pure CSS, no JS */
.nav-toggle { display: none; }
.nav-toggle-label {
display: none;
cursor: pointer;
padding: 0.4rem;
}
.nav-toggle-label svg { width: 26px; height: 26px; }

@media (max-width: 700px) {
.site-nav { flex-wrap: wrap; }
.nav-toggle-label { display: inline-flex; order: 2; }
.nav-search { order: 3; }
.nav-links {
    order: 4;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
}
.nav-links a { display: block; padding-block: 0.65rem; border-bottom: 1px solid var(--color-line); }
.nav-toggle:checked ~ .nav-links { max-height: 400px; }
}

/* MAIN CONTENT GRID: article + sidebar */
.content-grid {
display: grid;
grid-template-columns: minmax(0, 1fr) minmax(260px, 330px);
gap: clamp(2rem, 4vw, 3.5rem);
align-items: start;
}
@media (max-width: 860px) {
.content-grid { grid-template-columns: 1fr; }
.sidebar { order: 2; }
.post { order: 1; }
}

/* --- article --- */
.post-category {
display: inline-block;
font-size: 0.85rem;
font-weight: 600;
color: var(--color-accent);
background: var(--color-paper-raised);
padding: 0.3em 0.8em;
border-radius: 999px;
margin-bottom: 1rem;
}
.post-title {
font-size: var(--step-3);
font-weight: 600;
}
.post-meta {
display: flex;
flex-wrap: wrap;
gap: 1rem;
color: var(--color-ink-soft);
font-size: 0.92rem;
margin-bottom: 1.75rem;
}
.post-meta span + span { padding-left: 1rem; border-left: 1px solid var(--color-line); }

.post-figure { margin: 0 0 2rem; }
.post-figure svg { width: 100%; height: auto; border-radius: var(--radius); }
.post-figure figcaption {
font-size: 0.85rem;
color: var(--color-ink-soft);
font-style: italic;
margin-top: 0.6rem;
}

.post-body { max-width: 68ch; font-size: var(--step-0); }
.post-body h2 { font-size: var(--step-2); margin-top: 2em; }
.post-body blockquote {
margin: 2em 0;
padding: 0.25em 0 0.25em 1.5em;
border-left: 3px solid var(--color-accent-secondary);
font-family: var(--font-display);
font-size: var(--step-1);
font-style: italic;
color: var(--color-ink);
}
.post-body ul { list-style: disc; padding-left: 1.4em; margin-bottom: 1.2em; }
.post-body li { margin-bottom: 0.4em; }

.post-tags {
display: flex;
flex-wrap: wrap;
gap: 0.6rem;
margin: 2.5rem 0;
}
.post-tags a {
display: inline-block;
text-decoration: none;
font-size: 0.85rem;
color: var(--color-ink-soft);
background: var(--color-paper-raised);
padding: 0.35em 0.85em;
border-radius: 999px;
}
.post-tags a:hover { color: var(--color-accent); }

.post-pagination {
display: flex;
justify-content: space-between;
gap: 1rem;
padding-top: 1.75rem;
border-top: 1px solid var(--color-line);
font-weight: 500;
}
.post-pagination a { text-decoration: none; }
.post-pagination .next { margin-left: auto; text-align: right; }

/* --- sidebar --- */
.sidebar { display: flex; flex-direction: column; gap: 2.25rem; }
.widget {
background: var(--color-paper-raised);
border-radius: var(--radius);
padding: 1.75rem;
}
.widget h3 {
font-size: 1.15rem;
margin-bottom: 1rem;
}

.widget-about { display: flex; flex-direction: column; align-items: flex-start; gap: 1rem; }
.avatar { width: 64px; height: 64px; border-radius: 50%; }
.widget-about p { font-size: 0.95rem; color: var(--color-ink-soft); margin-bottom: 0.75rem; }

.widget-newsletter p { font-size: 0.95rem; color: var(--color-ink-soft); }
.newsletter-form { display: flex; flex-direction: column; gap: 0.6rem; }
.newsletter-form input[type="email"] {
padding: 0.65em 0.9em;
border: 1px solid var(--color-line);
border-radius: var(--radius);
background: var(--color-paper);
}
.btn {
display: inline-block;
text-align: center;
background: var(--color-accent);
color: var(--color-ink-inverse);
border: none;
padding: 0.7em 1.2em;
border-radius: var(--radius);
font-weight: 600;
cursor: pointer;
text-decoration: none;
}
.btn:hover { background: var(--color-accent-hover); color: var(--color-ink-inverse); }

.recent-posts-list li { display: flex; gap: 0.9rem; margin-bottom: 1.1rem; }
.recent-posts-list li:last-child { margin-bottom: 0; }
.recent-thumb { width: 48px; height: 48px; border-radius: var(--radius); flex-shrink: 0; }
.recent-posts-list a { text-decoration: none; color: var(--color-ink); font-weight: 500; font-size: 0.95rem; }
.recent-posts-list time { display: block; font-size: 0.8rem; color: var(--color-ink-soft); margin-top: 0.2rem; }

.widget-topics ul { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.widget-topics a {
display: inline-block;
text-decoration: none;
font-size: 0.85rem;
color: var(--color-ink-soft);
background: var(--color-paper);
border: 1px solid var(--color-line);
padding: 0.35em 0.85em;
border-radius: 999px;
}
.widget-topics a:hover { color: var(--color-accent); border-color: var(--color-accent); }

/* FOOTER */
.site-footer {
background: var(--color-deep);
color: var(--color-deep-text);
}
.site-footer .wrap {
padding-block: 2.5rem;
display: flex;
flex-wrap: wrap;
justify-content: space-between;
align-items: center;
gap: 1.25rem;
}
.footer-brand { color: var(--color-deep-text); font-family: var(--font-display); font-size: 1.1rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; }
.footer-links a { color: var(--color-deep-text); text-decoration: none; font-size: 0.9rem; }
.footer-links a:hover { color: var(--color-ink-inverse); }