/* ==========================================================================
   use-cases.html — use-case grid, persona strip, FAQ accordion
   ========================================================================== */

/* ── Use Cases Section ── */
.use-cases-section {
  padding: clamp(3rem, 6vw, 6rem) clamp(2rem, 5vw, 5rem);
  background: var(--paper);
}

.use-cases-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.2rem;
  max-width: 960px;
  margin: 0 auto;
}

.use-case-card {
  display: flex;
  flex-direction: column;
  padding: 1.8rem 1.5rem;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid rgba(125, 138, 150, 0.35);
  box-shadow: 0 8px 20px rgba(34, 49, 61, 0.06);
}

.use-case-persona {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.use-case-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--ink);
}

.use-case-card p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink-soft);
  margin-bottom: 1.1rem;
}

.use-case-tags {
  list-style: none;
  padding: 0;
  margin: auto 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.use-case-tags li {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--accent-strong);
  background: rgba(247, 243, 234, 0.65);
  border: 1px solid rgba(214, 139, 50, 0.55);
  border-radius: 999px;
  padding: 0.22rem 0.7rem;
}

/* ── Persona Strip ── */
.personas-section {
  padding: clamp(3rem, 6vw, 6rem) clamp(2rem, 5vw, 5rem);
  background: var(--paper-strong);
}

.personas-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.personas-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
  max-width: 960px;
  margin: 0 auto;
}

.persona-card {
  padding: 1.6rem 1.2rem;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid rgba(125, 138, 150, 0.35);
  box-shadow: 0 8px 20px rgba(34, 49, 61, 0.06);
  text-align: center;
}

.persona-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.persona-card p {
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink-soft);
  max-width: 24ch;
  margin: 0 auto;
}

/* ── FAQ Section ── */
.faq-section {
  padding: clamp(3rem, 6vw, 6rem) clamp(2rem, 5vw, 5rem);
  background: var(--paper);
}

.faq-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: 0.9rem;
}

.faq-item {
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid rgba(125, 138, 150, 0.35);
  box-shadow: 0 8px 20px rgba(34, 49, 61, 0.06);
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.4rem;
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  flex-shrink: 0;
  font-family: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent-strong);
  transition: transform 0.25s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  padding: 0 1.4rem 1.2rem;
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--ink-soft);
  max-width: 62ch;
  margin: 0;
}

/* ── Responsive ── */
@media (max-width: 1020px) {
  .personas-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .use-cases-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
  }
}

@media (max-width: 600px) {
  .personas-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
  }
}