/* Resources / articles — list + detail (POP-130).
   Reuses the shared design tokens (var(--ink), --pop, --sh…) from styles.css. */

/* ── Header ── */
.art-head { padding: 64px 0 8px; }
.art-head .center { margin-bottom: 0; }

/* ── List grid ── */
.art-list-block { padding-top: 40px; }
.art-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.art-empty {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--g500);
    font-weight: 600;
    padding: 40px 0;
}

/* ── Card ── */
.art-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border: var(--bd);
    border-radius: 16px;
    box-shadow: var(--sh);
    overflow: hidden;
    transition: transform .12s, box-shadow .12s;
}
.art-card:hover { transform: translate(-2px, -2px); box-shadow: var(--sh-lg); }
.art-card-media { display: block; border-bottom: var(--bd); }
.art-card-media img { display: block; width: 100%; height: 180px; object-fit: cover; }
.art-card-body { display: flex; flex-direction: column; gap: 10px; padding: 20px; }
.art-card-meta {
    font-family: var(--body);
    font-size: 12px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase;
    color: var(--g400);
}
.art-card-title { font-size: 20px; line-height: 1.2; letter-spacing: -.01em; }
.art-card-title a { color: var(--ink); text-decoration: none; }
.art-card-title a:hover { color: var(--coral); }
.art-card-excerpt { color: var(--g500); font-weight: 500; font-size: 15px; }
.art-card-link { margin-top: auto; color: var(--coral); font-weight: 700; text-decoration: none; }
.art-card-link:hover { text-decoration: underline; }

/* ── Detail ── */
.art-single { padding: 48px 0 88px; }
.art-wrap { max-width: 760px; }
.art-back { display: inline-block; margin-bottom: 22px; color: var(--g500); font-weight: 700; text-decoration: none; }
.art-back:hover { color: var(--ink); }

.art-single-head h1 {
    font-family: var(--disp);
    font-size: clamp(30px, 4.4vw, 48px);
    line-height: 1.08; letter-spacing: -.03em; margin-bottom: 14px;
}
.art-single-meta {
    font-family: var(--body);
    font-size: 13px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase;
    color: var(--g400); margin-bottom: 8px;
}
.art-hero {
    display: block; width: 100%; max-height: 420px; object-fit: cover;
    border: var(--bd); border-radius: 16px; box-shadow: var(--sh); margin: 24px 0 8px;
}

/* TL;DR summary callout — authored key takeaway, atop the article */
.art-tldr {
    margin: 20px 0 8px; padding: 18px 22px;
    background: var(--paper2); border: var(--bd); border-left: 4px solid var(--coral);
    border-radius: 0 12px 12px 0;
}
.art-tldr-label {
    display: block; font-family: var(--body); font-weight: 800;
    font-size: 12px; letter-spacing: .08em; text-transform: uppercase;
    color: var(--coral); margin-bottom: 6px;
}
.art-tldr p { margin: 0; font-size: 17px; line-height: 1.6; color: var(--g700); font-weight: 500; }

/* Rendered markdown body */
.art-body { font-size: 18px; line-height: 1.7; color: var(--g700); }
.art-body h2 { font-family: var(--disp); font-size: 28px; letter-spacing: -.02em; margin: 40px 0 14px; color: var(--ink); }
.art-body h3 { font-family: var(--disp); font-size: 22px; letter-spacing: -.01em; margin: 30px 0 10px; color: var(--ink); }
.art-body h4 { font-size: 18px; font-weight: 800; margin: 24px 0 8px; color: var(--ink); }
.art-body p { margin: 0 0 18px; }
.art-body a { color: var(--coral); font-weight: 600; }
.art-body strong { color: var(--ink); font-weight: 800; }
.art-body ul, .art-body ol { margin: 0 0 18px; padding-left: 26px; }
.art-body li { margin: 0 0 8px; }
.art-body img { max-width: 100%; height: auto; border: var(--bd); border-radius: 12px; margin: 8px 0; }
.art-body hr { border: none; border-top: var(--bd); margin: 32px 0; }
.art-body blockquote {
    margin: 24px 0; padding: 14px 20px;
    background: var(--paper2); border-left: 4px solid var(--coral); border-radius: 0 10px 10px 0;
    font-style: italic; color: var(--g700);
}
.art-body code {
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: .88em; background: var(--paper2); padding: 2px 6px; border-radius: 6px;
}
.art-body pre {
    background: var(--ink); color: var(--paper); padding: 18px 20px;
    border-radius: 12px; overflow-x: auto; margin: 0 0 20px;
}
.art-body pre code { background: none; padding: 0; color: inherit; }

/* Not-found */
.art-missing { text-align: center; padding: 48px 0 24px; }
.art-missing h1 { font-family: var(--disp); font-size: 34px; margin-bottom: 10px; }
.art-missing p { color: var(--g500); font-weight: 600; margin-bottom: 24px; }

/* ── Responsive ── */
@media (max-width: 900px) {
    .art-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
    .art-grid { grid-template-columns: 1fr; }
    .art-body { font-size: 17px; }
}