/* ============================================================
   Learning Success — RESEARCH LIBRARY index page
   Rebuilds the styling the old external research-library-styles.css
   used to provide (the index page at /research/ lost it on the theme
   change). Targets the .research-* classes in that page's content,
   tokenized to match the site. Lives in assets/css/pages/, so
   functions.php auto-enqueues it site-wide; the classes are unique to
   the research index, so it affects nothing else.
   ============================================================ */

.research-library { max-width: 1200px; margin: 0 auto; padding: 64px 32px 88px; }

/* ---- Page header ---- */
.research-index-header { text-align: center; max-width: 780px; margin: 0 auto 44px; }
.research-index-header h1 {
  font-family: var(--font-display); font-weight: var(--weight-semibold);
  font-size: 3rem; letter-spacing: -0.02em; color: var(--text-strong); margin: 0 0 18px; line-height: 1.1;
}
.research-index-header p { font: var(--font-body-md); font-size: 1.2rem; color: var(--text-muted); margin: 0; line-height: 1.6; }

/* ---- Intro / "how to use" blocks ---- */
.research-intro-section {
  max-width: 900px; margin: 0 auto 40px; background: var(--blue-50);
  border: 1px solid var(--border-subtle); border-radius: var(--radius-xl); padding: 32px 36px;
}
.research-intro-section h2 { font: var(--font-h2); color: var(--text-strong); margin: 0 0 14px; }
.research-intro-section p { font: var(--font-body-md); color: var(--text-body); line-height: 1.7; margin: 0 0 14px; }
.research-intro-section p:last-child { margin-bottom: 0; }
.research-intro-section ul { font: var(--font-body-md); color: var(--text-body); line-height: 1.7; margin: 0 0 14px; padding-left: 22px; }
.research-intro-section li { margin-bottom: 8px; }
.research-intro-section strong { color: var(--text-strong); }

/* ---- Card grid ---- */
.research-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin: 40px 0; }

.research-card {
  display: block; background: var(--surface-card);
  border: 1px solid var(--border-subtle); border-top: 4px solid var(--blue-500);
  border-radius: var(--radius-xl); box-shadow: var(--shadow-sm); padding: 28px 30px;
  text-decoration: none; color: inherit;
  transition: transform .22s var(--ease-out), box-shadow .22s var(--ease-out);
}
.research-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
/* The whole card is a link. Astra's `.entry-content a` underline+color
   propagates to everything inside; out-specify it so the card text reads as
   text, not a link. */
.entry-content a.research-card,
.entry-content a.research-card:hover,
.entry-content a.research-card:focus { text-decoration: none; color: var(--text-strong); }
.research-card h2 {
  font-family: var(--font-display); font-weight: var(--weight-semibold);
  font-size: 1.3rem; line-height: 1.25; color: var(--text-strong); margin: 0 0 10px;
}
.research-card > p { font: var(--font-body-base); color: var(--text-muted); line-height: 1.6; margin: 0 0 16px; }

/* topics list */
.research-topics { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-direction: column; gap: 7px; }
.research-topics li { position: relative; padding-left: 20px; font: var(--font-label); color: var(--text-body); line-height: 1.4; }
.research-topics li::before { content: ""; position: absolute; left: 4px; top: 7px; width: 6px; height: 6px; border-radius: 50%; background: var(--blue-400); }

/* tags */
.research-tag {
  display: inline-block; background: var(--blue-50); color: var(--blue-700);
  font: var(--font-eyebrow); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.06em;
  padding: 5px 10px; border-radius: var(--radius-pill); margin: 0 6px 6px 0;
}

/* ---- Responsive ---- */
@media (max-width: 1000px) { .research-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) {
  .research-grid { grid-template-columns: 1fr; }
  .research-index-header h1 { font-size: 2.3rem; }
  .research-library { padding: 48px 20px 64px; }
  .research-intro-section { padding: 26px 24px; }
}