.provider-shell {
  font-family: "Segoe UI", system-ui, sans-serif;
  color: #1b1b1b;
  min-height: 100vh;
  background: linear-gradient(160deg, #f3f6f8 0%, #e7eef3 55%, #f7f3ea 100%);
}

.provider-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(8px);
}

.provider-brand {
  font-weight: 700;
  text-decoration: none;
  color: #0f3d4c;
}

.provider-nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.provider-nav a {
  color: #244855;
  text-decoration: none;
}

.provider-main {
  max-width: 52rem;
  margin: 0 auto;
  padding: 1.5rem;
}

.provider-main label {
  display: block;
  margin: 0.75rem 0;
}

.provider-main input {
  display: block;
  width: min(100%, 24rem);
  margin-top: 0.25rem;
  padding: 0.4rem 0.55rem;
}

.provider-main button {
  margin-top: 0.75rem;
  padding: 0.45rem 0.9rem;
}

.error { color: #8a1f1f; }
.status { color: #1f5a3a; }