* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f6f8;
  color: #1f2937;
}

.lf-app {
  display: flex;
  min-height: 100vh;
}

.lf-sidebar {
  width: 230px;
  background: #111827;
  color: white;
  padding: 24px 16px;
}

.lf-sidebar h1 {
  font-size: 22px;
  margin: 0 0 24px;
}

.lf-sidebar nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.lf-tab {
  border: 0;
  padding: 12px;
  text-align: left;
  border-radius: 8px;
  background: transparent;
  color: #cbd5e1;
  cursor: pointer;
  font-size: 15px;
}

.lf-tab.active,
.lf-tab:hover {
  background: #2563eb;
  color: white;
}

.lf-main {
  flex: 1;
  padding: 32px;
}

.lf-page {
  display: none;
}

.lf-page.active {
  display: block;
}

.lf-card {
  max-width: 560px;
  background: white;
  padding: 24px;
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

label {
  font-weight: bold;
}

input,
select {
  padding: 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 15px;
}

.lf-checks {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.lf-primary {
  margin-top: 10px;
  padding: 13px 16px;
  background: #2563eb;
  color: white;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
}

@media (max-width: 768px) {
  .lf-app {
    flex-direction: column;
  }

  .lf-sidebar {
    width: 100%;
  }

  .lf-main {
    padding: 20px;
  }
}

.lf-result {
  margin-top: 24px;
  max-width: 800px;
}

.lf-query-group {
  background: white;
  padding: 18px;
  border-radius: 12px;
  margin-bottom: 16px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.05);
}

.lf-query-item {
  display: flex;
  gap: 10px;
  align-items: center;
  margin: 10px 0;
  flex-wrap: wrap;
}

.lf-query-item code {
  background: #f1f5f9;
  padding: 8px 10px;
  border-radius: 8px;
}

.lf-query-item button,
.lf-query-item a {
  padding: 7px 10px;
  border-radius: 7px;
  border: 0;
  background: #2563eb;
  color: white;
  text-decoration: none;
  cursor: pointer;
  font-size: 13px;
}

textarea {
  padding: 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 15px;
  resize: vertical;
}

.lf-import-card {
  margin-top: 24px;
}

.lf-status {
  margin-top: 12px;
  font-size: 14px;
}

.lf-prospect-item {
  background: white;
  padding: 14px;
  border-radius: 10px;
  margin-bottom: 10px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.04);
}

.lf-prospect-item strong {
  display: block;
  margin-bottom: 4px;
}

.lf-prospect-meta {
  font-size: 13px;
  color: #64748b;
}