/* ============================================================
   ucgrid01 — use case library cards (/usecase01 §02)
   Palette: paper #f7f5fc / ink #13171e / purple #6c33e8
   Breakpoints: 640 / 768 / 1024 / 1280
   ============================================================ */

section.ucgrid01 {
  --uc-ink: #13171e;
  --uc-purple: #864ffe;
  --uc-purple-ink: #6c33e8;
  --uc-cyan-ink: #2aa9b8;
  --uc-lime-ink: #8fa93c;
  --uc-paper: #f7f5fc;
  --uc-muted: #5a5f6b;
  padding: calc(var(--section-y) * 1.05) var(--page-pad);
  background:
    radial-gradient(42rem 24rem at 100% 0%, rgba(131, 231, 238, 0.14), transparent 66%),
    var(--uc-paper);
  color: var(--uc-ink);
  overflow: hidden;
}

.ucgrid01 .ucgrid01__inner {
  display: grid;
  gap: var(--space-5);
  max-width: var(--content-max);
  margin-inline: auto;
  min-width: 0;
}

.ucgrid01 .ucgrid01__head {
  display: grid;
  gap: var(--space-3);
  min-width: 0;
}

.ucgrid01 .ucgrid01__kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  color: var(--uc-purple-ink);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  line-height: 1.7;
}

.ucgrid01 .ucgrid01__kicker::before {
  content: "";
  flex: none;
  width: 1.75rem;
  height: 2px;
  background: var(--uc-purple);
}

.ucgrid01 .ucgrid01__title {
  margin: 0;
  color: var(--uc-ink);
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: -0.025em;
}

.ucgrid01 .ucgrid01__lead {
  margin: 0;
  max-width: 52rem;
  color: var(--uc-muted);
  font-size: 1rem;
  line-height: var(--lh-body);
}

.ucgrid01 .ucgrid01__note {
  margin: 0;
  padding: 0.75rem 0 0.75rem 1rem;
  border-left: 2px solid var(--uc-cyan-ink);
  color: var(--uc-muted);
  font-size: 0.875rem;
  line-height: 1.7;
}

.ucgrid01 .ucgrid01__grid {
  display: grid;
  gap: var(--space-4);
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}

.ucgrid01 .ucgrid01__card {
  min-width: 0;
  background: #ffffff;
  border: 1px solid rgba(19, 23, 30, 0.08);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 16px 38px rgba(19, 23, 30, 0.06);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.ucgrid01 .ucgrid01__card:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 54px rgba(19, 23, 30, 0.12);
}

.ucgrid01 .ucgrid01__link {
  display: grid;
  grid-template-rows: auto 1fr;
  height: 100%;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}

.ucgrid01 .ucgrid01__media {
  margin: 0;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: #1b1f28;
}

.ucgrid01 .ucgrid01__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms var(--ease);
}

.ucgrid01 .ucgrid01__card:hover .ucgrid01__media img {
  transform: scale(1.03);
}

.ucgrid01 .ucgrid01__body {
  display: grid;
  align-content: start;
  gap: 0.5rem;
  padding: var(--space-4);
  min-width: 0;
}

.ucgrid01 .ucgrid01__case {
  margin: 0;
  color: var(--uc-purple-ink);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  line-height: 1.6;
}

.ucgrid01 .ucgrid01__card-title {
  margin: 0;
  color: var(--uc-ink);
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.32;
  letter-spacing: -0.01em;
}

.ucgrid01 .ucgrid01__card-text {
  margin: 0;
  color: var(--uc-muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

.ucgrid01 .ucgrid01__roles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  margin: 0.25rem 0 0;
  padding: 0;
  list-style: none;
}

.ucgrid01 .ucgrid01__roles li {
  padding: 0.1875rem 0.5rem;
  background: rgba(134, 79, 254, 0.08);
  border-radius: var(--radius-pill);
  color: var(--uc-purple-ink);
  font-size: 0.6875rem;
  line-height: 1.6;
}

.ucgrid01 .ucgrid01__more {
  margin-top: 0.375rem;
  color: var(--uc-ink);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.6;
}

.ucgrid01 .ucgrid01__more::after {
  content: " \2192";
  color: var(--uc-purple-ink);
}

@media (min-width: 640px) {
  .ucgrid01 .ucgrid01__title {
    font-size: 2rem;
  }

  .ucgrid01 .ucgrid01__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .ucgrid01 .ucgrid01__inner {
    gap: var(--space-6);
  }

  .ucgrid01 .ucgrid01__title {
    font-size: 2.25rem;
  }

  .ucgrid01 .ucgrid01__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-5);
  }
}

@media (min-width: 1024px) {
  .ucgrid01 .ucgrid01__title {
    font-size: 2.5rem;
  }

  .ucgrid01 .ucgrid01__body {
    padding: var(--space-5) var(--space-4);
  }
}

@media (min-width: 1280px) {
  .ucgrid01 .ucgrid01__title {
    font-size: 2.75rem;
  }

  .ucgrid01 .ucgrid01__card-title {
    font-size: 1.1875rem;
  }
}