body {
  margin: 0;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  background: linear-gradient(135deg, #f8fbff 0%, #fff7f7 100%);
  color: #132238;
}

.app-body {
  min-height: 100vh;
  padding: 2rem 0;
}

.app-shell {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

.container {
  max-width: 1180px;
}

.card {
  border: 0;
  border-radius: 22px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.95);
}

.page-header {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(239, 246, 255, 0.95));
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 24px;
  padding: 2rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 10px 35px rgba(37, 99, 235, 0.08);
}

.btn-primary {
  background: linear-gradient(135deg, #ef4444 0%, #2563eb 100%);
  border: 0;
  border-radius: 999px;
  padding: 0.7rem 1.2rem;
  font-weight: 600;
}

.btn-primary:hover,
.btn-primary:focus {
  background: linear-gradient(135deg, #dc2626 0%, #1d4ed8 100%);
}

.btn-outline-secondary,
.btn-outline-primary {
  border-radius: 999px;
}

.form-control {
  border-radius: 14px;
  border-color: #dbeafe;
  padding: 0.8rem 1rem;
}

.form-control:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.15);
}

.list-group-item {
  border-left: 0;
  border-right: 0;
  padding-left: 0;
  padding-right: 0;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "SFMono-Regular", Consolas, monospace;
  background: #f8fafc;
  border-radius: 14px;
  padding: 1rem;
}

.text-muted {
  color: #64748b !important;
}

.hero-title {
  color: #0f172a;
  letter-spacing: -0.02em;
}