```css
:root {
  --primary:      #4f46e5;
  --primary-dark: #4338ca;
  --gray-200:     #e5e7eb;
  --gray-300:     #d1d5db;
  --gray-600:     #4b5563;
  --radius-lg:    12px;
  --spacing:      16px;
  --transition:   0.2s ease;
}

/* ── Form Card Container ───────────────────────────────────────────── */
.cpn-form-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  padding: calc(var(--spacing) * 1.5);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  grid-gap: var(--spacing);
  margin-top: var(--spacing);
}

/* ── Form Groups ─────────────────────────────────────────────────── */
.cpn-form-card .form-group {
  display: flex;
  flex-direction: column;
}
.cpn-form-card .form-group.full {
  grid-column: 1 / -1;
}
.cpn-form-card .form-group label {
  font-size: 0.85rem;
  color: var(--gray-600);
  margin-bottom: 4px;
}

/* ── Inputs & Selects ─────────────────────────────────────────────── */
.cpn-form-card input,
.cpn-form-card select {
  padding: 10px 12px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}
.cpn-form-card input:focus,
.cpn-form-card select:focus {
  outline: none;
  border-color: var(--primary);
}

/* ── Buttons ─────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-lg);
  padding: 10px 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* full‑width within grid */
.btn.full {
  width: 100%;
}

/* smaller “verify” style */
.btn.verify {
  background: var(--gray-200);
  color: var(--gray-600);
  padding: 8px 12px;
  margin-left: 8px;
}
.btn.verify:hover {
  background: var(--gray-300);
}

/* pairing controls on one row */
.row {
  display: flex;
  align-items: center;
}
.row > .btn {
  margin-right: 12px;
}

/* ── Tool Description ─────────────────────────────────────────────── */
.tool-description {
  grid-column: 1 / -1;
  margin: var(--spacing) 0;
  color: var(--gray-600);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.4;
}
```
/* ── Active Glow Input Enhancement ───────────────────────────────── */
.active-glow {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.4) !important;
  transition: box-shadow 0.3s ease;
}
#ghostLabel.hidden {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  z-index: -9999 !important;
  pointer-events: none !important;
}
/* ✅ FORCE visibility for all platform selector checkboxes */
input[type="checkbox"].platform-check {
  appearance: auto !important;
  -webkit-appearance: checkbox !important;
  visibility: visible !important;
  opacity: 1 !important;
  display: inline-block !important;
  width: 18px !important;
  height: 18px !important;
  background: #fff !important;
  border: 1px solid #000 !important;
}
/* 🔄 Spinner Style */
.cpn-spinner {
  border: 6px solid #f3f4f6;
  border-top: 6px solid #3b82f6;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  animation: spin 0.8s linear infinite;
  margin: 0 auto;
}
@keyframes spin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}