html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

main {
  flex: 1 0 auto;
}

footer {
  flex-shrink: 0;
}

/* Additional styles for Know platform */
.hero-section {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    border-radius: 0 0 20px 20px;
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    margin: 0 auto 1rem;
}

.course-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e9ecef;
    height: 100%;
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.card-header {
    border-bottom: none;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1.1rem;
    border-radius: 8px;
}

.display-4 {
    font-weight: 700;
    line-height: 1.2;
}

.lead {
    font-size: 1.25rem;
    font-weight: 300;
}

.text-muted {
    color: #6c757d !important;
}

.bg-primary {
    background-color: #2c3e50 !important;
}

.btn-primary {
    background-color: #2c3e50;
    border-color: #2c3e50;
}

.btn-primary:hover {
    background-color: #1a252f;
    border-color: #1a252f;
}

.bg-success {
    background-color: #27ae60 !important;
}

.bg-info {
    background-color: #2980b9 !important;
}

.bg-warning {
    background-color: #f39c12 !important;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 0 !important;
    }
    
    .display-4 {
        font-size: 2.5rem;
    }
    
    .lead {
        font-size: 1.1rem;
    }
}