/* ============================================================
   Problem-statement cards (home) and dedicated brief pages.
   Tokens and base components come from citta-theme.css.
   ============================================================ */

/* ---- home grid ---- */
.ps-grid{
  display:grid;
  gap:2.5rem 2rem;
  margin-top:3.5rem;
}
.ps-card{
  display:flex;
  flex-direction:column;
  border-top:4px solid var(--accent);
  padding-top:1.25rem;
  color:inherit;
  min-height:100%;
  transition:background .15s cubic-bezier(.4,0,.2,1);
}
.ps-card:hover{background:linear-gradient(180deg,rgba(255,31,31,.04),transparent 42%)}
.ps-card:focus-visible{outline:2px solid var(--accent);outline-offset:8px}
.ps-card__n{
  font-family:var(--font-display);
  font-weight:700;
  font-size:var(--text-sm);
  letter-spacing:.14em;
  color:var(--accent);
  font-variant-numeric:tabular-nums;
}
.ps-card__title{
  font-family:var(--font-display);
  font-weight:700;
  font-size:var(--text-2xl);
  letter-spacing:.02em;
  text-transform:uppercase;
  line-height:1.15;
  margin-top:.6rem;
  max-width:none;
}
.ps-card__excerpt{
  margin-top:1rem;
  flex:1;
  font-size:var(--text-sm);
  font-weight:500;
  color:var(--slate);
  line-height:1.5;
}
.ps-card__points{
  display:grid;
  gap:.6rem;
  margin-top:1rem;
  flex:1;
}
.ps-card__points li{
  display:flex;
  align-items:flex-start;
  gap:.65rem;
  font-size:var(--text-sm);
  font-weight:500;
  color:var(--slate);
  line-height:1.5;
}
.ps-card__points li::before{
  content:"";
  width:.5rem;height:.5rem;
  border-radius:999px;
  background:var(--accent);
  flex-shrink:0;
  margin-top:.4rem;
}
.ps-card__cta{
  margin-top:1.25rem;
  font-family:var(--font-display);
  font-weight:600;
  font-size:.75rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--accent);
}
.ps-card:hover .ps-card__cta{color:var(--accent-deep)}
.ps-card__cta::after{content:" \2192"}

.ps-actions{margin-top:1.75rem}

/* ---- dedicated page hero ---- */
.headline--ps{
  font-size:clamp(1.7rem,4.2vw,3.15rem);
  max-width:28ch;
}
.back{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  font-family:var(--font-display);
  font-weight:600;
  font-size:.75rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--slate);
  margin-bottom:1.25rem;
}
.back:hover{color:var(--accent)}
.back::before{content:"\2190";color:var(--accent)}

/* ---- body blocks on briefs ---- */
.prose-block{max-width:52rem}
.prose-block .body + .body{margin-top:.85rem}
.quote{
  max-width:42rem;
  margin-top:1.5rem;
  padding:1.25rem 0 1.25rem 1.25rem;
  border-left:4px solid var(--accent);
  font-family:var(--font-display);
  font-weight:700;
  font-size:var(--text-xl);
  letter-spacing:.02em;
  text-transform:uppercase;
  line-height:1.25;
}
.stack{display:grid;gap:2.75rem;margin-top:2.5rem;max-width:54rem}
.stack h3.h3{margin-bottom:.35rem}

/* pipeline chips */
.pipe{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  margin-top:1.5rem;max-width:54rem;
}
.pipe__step{
  font-family:var(--font-display);
  font-weight:700;
  font-size:.75rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  padding:.5rem .75rem;
  background:#fff;
  border:1px solid var(--ink-10);
}
.pipe__arr{
  color:var(--accent);
  font-weight:700;
  font-family:var(--font-display);
}

/* prev / next */
.ps-pager{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:1rem;
  max-width:var(--wrap);margin-inline:auto;
  padding:2rem var(--gutter) 0;
  border-top:1px solid var(--ink-10);
}
.ps-pager a{
  font-family:var(--font-display);
  font-weight:600;
  font-size:.75rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--slate);
}
.ps-pager a:hover{color:var(--accent)}
.ps-pager a.is-next{margin-left:auto;text-align:right}

code{
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  font-size:.9em;font-weight:700;color:var(--ink);
}

@media (min-width:40rem){
  .ps-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:64rem){
  .ps-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:3rem 2.5rem}
}

@media print{
  .ps-pager,.back{display:none !important}
}