:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.card {
    border: none;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.card-title {
    color: #333;
    font-weight: 600;
}

.content {
    font-size: 1.1rem;
    line-height: 1.8;
}

.content h1, .content h2, .content h3, .content h4, .content h5, .content h6 {
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.content p {
    margin-bottom: 1rem;
}

.content img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    margin: 1rem 0;
}

.content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
    margin: 1rem 0;
    font-style: italic;
    color: #666;
}

.content ul, .content ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.content code {
    background-color: #f8f9fa;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.9em;
}

.content pre {
    background-color: #2d2d2d;
    color: #f8f8f2;
    padding: 1rem;
    border-radius: 0.5rem;
    overflow-x: auto;
    margin: 1rem 0;
}

.content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 1.5rem;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    text-decoration: underline;
}

footer {
    margin-top: auto;
}

.alert {
    border: none;
    border-radius: 0.5rem;
}

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

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .content {
        font-size: 1rem;
    }
}