/* ===============================================================
   USE-CASE SHARED PATTERNS
   ---------------------------------------------------------------
   Section patterns shared by the use-case pages (compliance,
   safety, onboarding): .uc-quote (authority blockquote),
   .uc-feature (split demo panels), .uc-faq (details/summary
   accordion), .uc-thread-link. Palette-agnostic: everything
   routes through --accent / --glass-* set by the page sheet.
   =============================================================== */

/* ---------------------------------------------------------------
   .uc-quote — the regulator's questions, verbatim
   --------------------------------------------------------------- */
.uc-quote {
  max-width: 880px;
  margin: 0 auto;
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 2.6rem 3rem;
  backdrop-filter: blur(var(--glass-blur)) saturate(120%);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(120%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), 0 12px 30px rgba(0, 0, 0, 0.38);
}
.uc-quote::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
  border-radius: 3px 0 0 3px;
}
.uc-quote blockquote {
  margin: 0;
}
.uc-quote blockquote p {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.1vw, 1.7rem);
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--ink);
}
.uc-quote blockquote p + p {
  margin-top: 1.3rem;
}
.uc-quote-source {
  display: inline-block;
  margin-top: 1.7rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-dim);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.3s var(--ease-out);
}
.uc-quote-source:hover { color: var(--accent); }
.uc-quote-after {
  max-width: 60ch;
  margin: 2.6rem auto 0;
  text-align: center;
  font-size: clamp(1rem, 1.15vw, 1.13rem);
  line-height: 1.6;
  color: var(--ink-muted);
}

/* ---------------------------------------------------------------
   .uc-feature — playable demo split panels
   --------------------------------------------------------------- */
.uc-features {
  max-width: 1200px;
  margin: 0 auto;
}
.uc-feature {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 3rem;
  align-items: center;
}
.uc-feature + .uc-feature { margin-top: 4.5rem; }
.uc-feature--flip .uc-feature-visual { order: 2; }
.uc-feature--flip .uc-feature-copy { order: 1; }

.uc-feature-visual {
  position: relative;
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--glass-bg);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14), 0 18px 44px rgba(0, 0, 0, 0.45);
}
.uc-feature-visual img {
  width: 100%;
  display: block;
  transition: transform 0.6s var(--ease-out);
}
.uc-feature:hover .uc-feature-visual img { transform: scale(1.025); }
.uc-feature-code {
  position: absolute;
  top: 0.7rem; left: 0.7rem;
  padding: 0.25rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 0, 0, 0.62);
  backdrop-filter: blur(4px);
  border-radius: 4px;
}

.uc-feature-tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.8rem;
}
.uc-feature-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1rem;
}
.uc-feature-body {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--ink);
  opacity: 0.88;
  margin-bottom: 1.2rem;
}
.uc-feature-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
  margin-bottom: 1.6rem;
}
.uc-features-footnote {
  max-width: 62ch;
  margin: 4rem auto 0;
  text-align: center;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--ink-muted);
}

/* ---------------------------------------------------------------
   .uc-faq — details/summary accordion
   --------------------------------------------------------------- */
.uc-faq {
  max-width: 760px;
  margin: 0 auto;
}
.uc-faq details {
  border-top: 1px solid var(--line);
}
.uc-faq details:last-child {
  border-bottom: 1px solid var(--line);
}
.uc-faq summary {
  list-style: none;
  position: relative;
  cursor: pointer;
  padding: 1.35rem 2.6rem 1.35rem 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--ink);
  transition: color 0.3s var(--ease-out);
}
.uc-faq summary::-webkit-details-marker { display: none; }
.uc-faq summary::after {
  content: '+';
  position: absolute;
  right: 0.4rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent);
  transition: transform 0.3s var(--ease-out);
}
.uc-faq details[open] summary::after {
  content: '\2212';
}
.uc-faq summary:hover { color: var(--accent-soft); }
.uc-faq details p {
  padding: 0 2.6rem 1.6rem 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--ink-muted);
}

/* Thread-card link line */
.uc-thread-link {
  display: inline-block;
  margin-top: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: color-mix(in srgb, var(--c) 75%, var(--ink));
  transition: color 0.3s var(--ease-out);
}
.uc-thread-link:hover { color: var(--ink); }

/* ---------------------------------------------------------------
   RESPONSIVE
   --------------------------------------------------------------- */
@media (max-width: 900px) {
  .uc-quote { padding: 1.8rem 1.6rem; }
  .uc-quote-after { margin-top: 2rem; }
  .uc-feature { grid-template-columns: 1fr; gap: 1.6rem; }
  .uc-feature--flip .uc-feature-visual { order: 1; }
  .uc-feature--flip .uc-feature-copy { order: 2; }
  .uc-feature + .uc-feature { margin-top: 3rem; }
  .uc-quote, .uc-feature-visual {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(14, 10, 30, 0.88);
  }
}