/* ========================================
   Codnivio Community — Main Design System
   ======================================== */

:root {
  --codnivio-primary: #0d6efd;
  --codnivio-primary-dark: #0a58ca;
  --codnivio-success: #198754;
  --codnivio-warning: #ffc107;
  --codnivio-danger: #dc3545;
  --codnivio-dark: #212529;
  --codnivio-gray: #6c757d;
  --codnivio-light: #f8f9fa;
  --section-padding: 4.5rem 0;
  --card-radius: 0.75rem;
  --transition: all 0.2s ease;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--codnivio-dark);
  line-height: 1.6;
  padding-top: 56px;
}

a { transition: var(--transition); }

.feature-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-number {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
}

.course-card, .info-card {
  border: none;
  border-radius: var(--card-radius);
  transition: var(--transition);
}

.course-card:hover, .info-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.1) !important;
}

.btn { border-radius: 0.5rem; }
.card { border-radius: var(--card-radius); }

.text-white-50 { color: rgba(255, 255, 255, 0.75) !important; }

.page-header {
  background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
  padding: 3.5rem 0 2.5rem;
  color: #fff;
}

.page-header h1 { font-weight: 700; }
.page-header .lead { opacity: 0.9; }

.navbar .nav-link.active {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}

section { scroll-margin-top: 70px; }

.accordion-button:not(.collapsed) {
  background-color: rgba(13, 110, 253, 0.08);
  color: var(--codnivio-primary);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

footer a:hover { color: #fff !important; }

.pricing-card {
  border: 2px solid transparent;
  transition: var(--transition);
}
.pricing-card.featured {
  border-color: var(--codnivio-primary);
  transform: scale(1.03);
}
.pricing-card:hover {
  border-color: var(--codnivio-primary);
}

@media (max-width: 767.98px) {
  .display-4 { font-size: 2rem; }
  .pricing-card.featured { transform: none; }
  .page-header { padding: 2.5rem 0 1.75rem; }
}