/* =========================================================================
   Research Journal — archive (/journal/) + single posts.
   Editorial brand system: paper, hairlines, square corners, mono microlabels.
   Long-form prose is sentence-case + left-aligned (readability rule from the
   Phase 9 mobile audit — never uppercase/justify multi-sentence copy).
   ========================================================================= */

.jrnl {
    max-width: 1080px;
    margin: 0 auto;
    padding: 72px 24px 110px;
}

/* --- Archive hero -------------------------------------------------------- */

.jrnl-hero { margin-bottom: 56px; }
.jrnl-hero h1 {
    font-family: var(--font-display);
    font-weight: var(--fw-semibold);
    font-size: clamp(34px, 5vw, 56px);
    line-height: var(--lh-tight);
    letter-spacing: var(--track-tight);
    margin: 0 0 14px;
    color: var(--ink);
}
.jrnl-hero-sub {
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    color: var(--ink-2);
    max-width: 56ch;
    margin: 0;
}

/* --- Archive grid -------------------------------------------------------- */

/* Borders on the cards (not a hairline grid background) so a partial last
   row never renders empty cells as grey blocks. */
.jrnl-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--hairline);
    border-left: 1px solid var(--hairline);
}
.jrnl-card {
    background: var(--paper);
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
}
.jrnl-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 26px 24px 22px;
    text-decoration: none;
    color: inherit;
    transition: background var(--dur-med) var(--ease-out);
}
.jrnl-card-link:hover { background: var(--paper-2); }
.jrnl-card-head {
    display: flex;
    justify-content: space-between;
    text-transform: uppercase;
    color: var(--ink-3);
    margin-bottom: 16px;
}
.jrnl-card h2 {
    font-family: var(--font-display);
    font-weight: var(--fw-semibold);
    font-size: 20px;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin: 0 0 12px;
    color: var(--ink);
}
.jrnl-card-excerpt {
    font-family: var(--font-body);
    font-size: 13.5px;
    line-height: 1.55;
    color: var(--ink-2);
    margin: 0 0 20px;
}
.jrnl-card-read {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    text-transform: uppercase;
    color: var(--ink-2);
    border-top: 1px solid var(--hairline);
    padding-top: 12px;
}

.jrnl-pagination { margin-top: 40px; }
.jrnl-pagination .nav-links {
    display: flex;
    gap: 10px;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: uppercase;
}
.jrnl-pagination .nav-links a,
.jrnl-pagination .nav-links .current {
    padding: 8px 14px;
    border: 1px solid var(--hairline);
    text-decoration: none;
    color: var(--ink-2);
}
.jrnl-pagination .nav-links .current { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.jrnl-pagination .nav-links a:hover { border-color: var(--ink); color: var(--ink); }

.jrnl-empty { text-align: center; padding: 60px 0 20px; }
.jrnl-empty .mono { text-transform: uppercase; color: var(--ink-3); margin-bottom: 22px; display: block; }

/* --- Single post ---------------------------------------------------------- */

.jrnl-post { max-width: 760px; margin: 0 auto; }

.jrnl-crumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    text-transform: uppercase;
    color: var(--ink-3);
    margin-bottom: 34px;
}
.jrnl-crumbs a { color: var(--ink-2); text-decoration: none; }
.jrnl-crumbs a:hover { color: var(--ink); }

.jrnl-post-head { margin-bottom: 34px; }
.jrnl-post-head .jrnl-card-head { margin-bottom: 18px; }
.jrnl-post-head h1 {
    font-family: var(--font-display);
    font-weight: var(--fw-semibold);
    font-size: clamp(30px, 4.4vw, 46px);
    line-height: 1.12;
    letter-spacing: var(--track-tight);
    margin: 0;
    color: var(--ink);
}

/* Long-form prose — readable, sentence-case, left-aligned. */
.jrnl-prose {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.72;
    color: var(--ink);
}
.jrnl-prose p { margin: 0 0 1.2em; max-width: 68ch; }
.jrnl-prose h2 {
    font-family: var(--font-display);
    font-weight: var(--fw-semibold);
    font-size: 24px;
    line-height: 1.25;
    margin: 1.9em 0 0.7em;
}
.jrnl-prose h3 {
    font-family: var(--font-display);
    font-weight: var(--fw-semibold);
    font-size: 19px;
    margin: 1.6em 0 0.6em;
}
.jrnl-prose ul, .jrnl-prose ol { margin: 0 0 1.2em; padding-left: 1.3em; }
.jrnl-prose li { margin-bottom: 0.45em; }
.jrnl-prose a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.jrnl-prose a:hover { opacity: .65; }
.jrnl-prose blockquote {
    margin: 1.4em 0;
    padding: 4px 0 4px 20px;
    border-left: 2px solid var(--ink);
    color: var(--ink-2);
}
.jrnl-prose table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 1.4em;
    font-size: 14px;
}
.jrnl-prose th, .jrnl-prose td {
    border: 1px solid var(--hairline);
    padding: 9px 12px;
    text-align: left;
    vertical-align: top;
}
.jrnl-prose th {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--ink-2);
    background: var(--paper-2);
}
.jrnl-prose img { max-width: 100%; height: auto; }
.jrnl-prose code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    background: var(--paper-2);
    border: 1px solid var(--hairline);
    padding: 1px 5px;
}

.jrnl-ruo {
    margin: 44px 0 0;
    padding-top: 16px;
    border-top: 1px solid var(--hairline);
    text-transform: uppercase;
    color: var(--ink-3);
}

/* --- Related research ------------------------------------------------------ */

.jrnl-related { margin-top: 56px; }
.jrnl-related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--hairline);
    border-left: 1px solid var(--hairline);
    margin-bottom: 18px;
}
.jrnl-related-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 20px 18px;
    background: var(--paper);
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    text-decoration: none;
    color: inherit;
    transition: background var(--dur-med) var(--ease-out);
}
.jrnl-related-card:hover { background: var(--paper-2); }
.jrnl-related-name {
    font-family: var(--font-display);
    font-weight: var(--fw-semibold);
    font-size: 16px;
    color: var(--ink);
}
.jrnl-related-price { color: var(--ink-2); }
.jrnl-related-go {
    margin-top: auto;
    text-transform: uppercase;
    color: var(--ink-3);
    padding-top: 10px;
}
.jrnl-related-links { display: flex; gap: 26px; text-transform: uppercase; }
.jrnl-related-links a { color: var(--ink-2); text-decoration: none; }
.jrnl-related-links a:hover { color: var(--ink); }

/* --- Prev / next ------------------------------------------------------------ */

.jrnl-adjacent {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-top: 48px;
    padding-top: 22px;
    border-top: 1px solid var(--hairline);
}
.jrnl-adj {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-width: 46%;
    text-decoration: none;
    color: var(--ink);
    font-family: var(--font-display);
    font-weight: var(--fw-semibold);
    font-size: 15px;
    line-height: 1.3;
}
.jrnl-adj .mono { text-transform: uppercase; color: var(--ink-3); }
.jrnl-adj:hover { opacity: .7; }
.jrnl-adj-next { text-align: right; margin-left: auto; }

/* --- Responsive -------------------------------------------------------------- */

@media (max-width: 900px) {
    .jrnl-grid, .jrnl-related-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .jrnl { padding: 44px 18px 80px; }
    .jrnl-grid, .jrnl-related-grid { grid-template-columns: 1fr; }
    .jrnl-hero { margin-bottom: 36px; }
    .jrnl-prose { font-size: 15px; }
    .jrnl-adjacent { flex-direction: column; }
    .jrnl-adj, .jrnl-adj-next { max-width: 100%; text-align: left; margin-left: 0; }
    .jrnl-related-links { flex-direction: column; gap: 10px; }
}