:root {
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  color: #111827;
  background: radial-gradient(circle at top, #f7f8fb 0%, #eef2ff 45%, #f8fafc 100%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

#root {
  min-height: 100vh;
}

.app {
  width: min(960px, 94vw);
  margin: 0 auto;
  padding: 1.5rem 0 3rem;
}

.card {
  background: #ffffff;
  border: 1px solid #dbe3f4;
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  padding: 1rem;
  margin-top: 1rem;
}

.row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

input,
select,
textarea {
  border: 1px solid #c8d2ea;
  border-radius: 10px;
  padding: 0.6rem 0.8rem;
  font: inherit;
}

textarea {
  min-height: 120px;
  resize: vertical;
}

button {
  border: none;
  border-radius: 10px;
  padding: 0.6rem 0.9rem;
  font-weight: 600;
  cursor: pointer;
  background: #1d4ed8;
  color: #ffffff;
}

button.secondary {
  background: #475569;
}

button.warn {
  background: #b91c1c;
}

button.ghost {
  background: #e2e8f0;
  color: #0f172a;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.alert {
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  border: 1px solid #fecaca;
  background: #fef2f2;
  color: #7f1d1d;
}

.muted {
  color: #475569;
}

.badge {
  display: inline-block;
  border-radius: 999px;
  background: #e2e8f0;
  color: #0f172a;
  padding: 0.2rem 0.6rem;
  font-size: 0.78rem;
  font-weight: 600;
}

.tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tabs button {
  background: #dbeafe;
  color: #1e3a8a;
}

.tabs button.active {
  background: #1d4ed8;
  color: #ffffff;
}

.spacer {
  flex: 1;
}

pre {
  margin: 0;
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 10px;
  padding: 0.8rem;
  overflow: auto;
  max-height: 360px;
}