body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, #e5f0ff 0, #f9fafb 45%, #f3f4f6 100%);
  color: #0f172a;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 3rem;
}

.page-header {
  margin-bottom: 2.5rem;
}

.page-header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.page-header-main h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2rem, 3vw, 2.5rem);
  letter-spacing: 0.03em;
}

.page-subtitle {
  margin: 0;
  color: #6b7280;
  font-size: 0.95rem;
}

.user-control {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.user-control label {
  font-size: 0.8rem;
  color: #6b7280;
}

.user-control-inputs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.user-control-inputs input {
  min-width: 180px;
  padding: 0.45rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid #cbd5f5;
  font-size: 0.9rem;
}

.user-control-inputs button {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(90deg, #2563eb, #4f46e5);
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.45);
  transition: transform 0.12s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.user-control-inputs button:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(59, 130, 246, 0.6);
  opacity: 0.98;
}

.page-actions {
  display: flex;
  gap: 0.75rem;
}

.page-action-link {
  padding: 0.5rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.8);
  background: rgba(255, 255, 255, 0.8);
  color: #111827;
  font-size: 0.85rem;
  text-decoration: none;
  font-weight: 500;
  transition: background 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
}

.page-action-link:hover {
  background: #e5f0ff;
  box-shadow: 0 6px 18px rgba(148, 163, 184, 0.5);
  transform: translateY(-1px);
}

.page-main {
  margin-top: 1rem;
}

.grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
}

.card {
  background: #ffffff;
  border-radius: 1.1rem;
  padding: 1.4rem 1.3rem 1.3rem;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(148, 163, 184, 0.3);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 380px;
}

.card-preview {
  position: relative;
  border-radius: 0.8rem;
  overflow: hidden;
  border: 1px solid rgba(209, 213, 219, 0.9);
  background: #f3f4f6;
}

.card-preview::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(243, 244, 246, 0.9), transparent 45%);
  pointer-events: none;
  z-index: 1;
}

.card-preview iframe {
  width: 100%;
  height: 230px;
  border: none;
}

.card-content h3 {
  margin: 0 0 0.4rem;
  color: #111827;
  font-size: 1.05rem;
}

.card-content p {
  margin: 0;
  color: #6b7280;
  font-size: 0.88rem;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: #6b7280;
}

.card a.button {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  background: linear-gradient(90deg, #2563eb, #4f46e5);
  color: white;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.45);
  transition: transform 0.12s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.card a.button:hover {
  transform: translateY(-1px) translateZ(0);
  box-shadow: 0 12px 28px rgba(59, 130, 246, 0.6);
  opacity: 0.98;
}

@media (max-width: 640px) {
  .page {
    padding: 1.75rem 1.1rem 2.5rem;
  }

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