body {
  background: #f3f4f6;
  color: #0f172a;
}

.container .collection.with-header {
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
  background: #fff;
}

.collection.with-header .collection-header {
  background: #0f172a;
  color: #fff;
  padding: 1.1rem 1.25rem;
}
.collection.with-header .collection-header h5 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.collection.with-header .collection-item {
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}
.collection.with-header .collection-item:last-child {
  border-bottom: none;
}
.collection.with-header .collection-item a {
  color: #0f172a;
  font-weight: 500;
}
.collection.with-header .collection-item a:hover {
  color: #2563eb;
}

.card.blue.darken-4 {
  background: #111827 !important;
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.14);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.15);
}
.card.blue.darken-4 .card-content {
  padding: 1.5rem 1.5rem 1.25rem;
}
.card.blue.darken-4 .card-title {
  font-weight: 600;
  margin-bottom: 0.9rem;
}
.card.blue.darken-4 .divider {
  background: rgba(226, 232, 240, 0.3);
  margin-bottom: 1rem;
}
.card.blue.darken-4 p {
  color: #e2e8f0;
  line-height: 1.6;
}
.card.blue.darken-4 .card-action {
  border-top: 1px solid rgba(226, 232, 240, 0.08);
  background: rgba(0, 0, 0, 0.05);
  padding: 0.75rem 1.5rem 1rem;
  border-radius: 0 0 1rem 1rem;
}
.card.blue.darken-4 .card-action a {
  color: #e2e8f0;
  font-weight: 500;
}
.card.blue.darken-4 .card-action a:hover {
  color: #ffffff;
}

.container .row {
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 600px) {
  .container .collection.with-header {
    border-radius: 0.8rem;
  }
  .card.blue.darken-4 {
    border-radius: 0.8rem;
  }
}