/* Theoric — shared site styles
   Hand-written static site; this stylesheet is linked from every page.
   Body prose is set in a cross-platform system serif; headings and UI
   (logo, dates, blog-list links, footer) are system sans for contrast. */

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

body {
    font-family: Charter, "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
    max-width: 38rem;
    margin: 0 auto;
    padding: 4rem 2rem;
    background: #FAFAF8;
    color: #101010;
    line-height: 1.6;
    font-size: 18px;
}

/* ---- Brand / UI (system sans) ---- */
.logo {
    display: block;
    width: 220px;
    height: auto;
    margin-bottom: 3rem;
}
.home .logo { width: 240px; }

/* ---- Headings (system sans) ---- */
h1, h2, h3 {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-weight: 600;
}
h1 { font-size: 2rem; line-height: 1.2; letter-spacing: -0.01em; margin-bottom: 0.4rem; }
h2 { font-size: 1.4rem; line-height: 1.35; margin-top: 2.4rem; margin-bottom: 0.8rem; }
h3 { font-size: 1.2rem; line-height: 1.4; margin-top: 1.8rem; margin-bottom: 0.6rem; }

/* Blog listing uses a smaller page title than article pages */
.listing h1 { font-size: 1.6rem; margin-bottom: 2rem; }

/* ---- Article subtitle / standfirst ---- */
.subtitle {
    font-size: 1.25rem;
    line-height: 1.45;
    color: #555;
    margin: 0 0 0.7rem;
}

/* ---- Date / byline ---- */
.date {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 0.95rem;
    color: #555;
    display: block;
}
article .date { margin-bottom: 2.2rem; }
.listing .post .date { margin-top: 0.2rem; }

/* ---- Article byline (author + date) ---- */
.byline {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 0.95rem;
    color: #555;
    margin: 0 0 2.2rem;
}
.byline .date { display: inline; margin: 0; }
.byline a { color: #555; }
.byline a:hover { color: #101010; }

/* ---- Prose ---- */
p { margin-bottom: 1.2rem; }
ul, ol { margin-bottom: 1.2rem; padding-left: 1.5rem; }
li { margin-bottom: 0.5rem; }
strong { font-weight: 600; }

a { color: #101010; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { color: #555; }

/* ---- Blog listing items ---- */
.post { margin-bottom: 1.8rem; }
.post a {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-weight: 600;
}

/* ---- Code ---- */
code {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
    font-size: 0.9em;
    background: #F1F0EC;
    padding: 0.1em 0.3em;
    border-radius: 3px;
}
pre {
    overflow-x: auto;
    background: #F1F0EC;
    padding: 1rem;
    border-radius: 4px;
    margin: 1.2rem 0;
    font-size: 0.9rem;
}
pre code { background: none; padding: 0; border-radius: 0; font-size: inherit; }

/* ---- Misc ---- */
hr {
    border: 0;
    border-top: 1px solid #D8D6CF;
    margin: 3rem 0 2rem;
}
.note { color: #555; font-style: italic; }
.signature { margin-top: 2.5rem; color: #444; }

footer {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    gap: 1rem;
    margin-top: 3rem;
    font-size: 0.95rem;
}

/* ---- Mobile ---- */
@media (max-width: 480px) {
    body { padding: 2.5rem 1.25rem; }
    h1 { font-size: 1.6rem; }
    .subtitle { font-size: 1.1rem; }
}