:root {
  --primary-color: #0D6EFD;
  --secondary-color: #6C757D;
  --background-color: #F8F9FA;
  --surface-color: #FFFFFF;
  --primary-gradient: linear-gradient(45deg, #0d6efd, #4da8ff);
  --border-radius: 0.5rem;
}

body {
  background-color: var(--background-color);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
}

.section-padding {
  padding: 6rem 0;
}

.navbar {
  transition: all 0.3s ease-in-out;
}

.navbar-scrolled {
  background-color: var(--surface-color) !important;
  box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.hero {
  background-image: var(--primary-gradient);
  color: white;
  padding: 8rem 0;
  text-align: center;
}

.hero h1 {
  font-weight: 700;
}

.card, .form-control, .btn {
  border-radius: var(--border-radius);
}

.card {
    border: none;
    box-shadow: 0 0.5rem 1rem rgba(0,0,0,.1);
}

.form-control:focus {
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
    border-color: #86b7fe;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.footer {
    background-color: var(--surface-color);
}