/* Essential custom styles that extend Bootstrap */

/* Hero section background */
.hero-section {
    background-color: var(--bs-primary);
    color: white;
}

/* Sticky sidebar */
.course-sidebar {
    position: sticky;
    top: 1rem;
}

/* Code block container for copy button */
.code-block-container {
    position: relative;
}

.copy-code-button {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    z-index: 1;
}

/* Custom blockquote style */
.course-content blockquote {
    border-left: 4px solid var(--bs-primary);
    padding-left: 1rem;
}

/* Advertisement section */
.course-ad {
    background: linear-gradient(45deg, var(--bs-primary-bg-subtle), var(--bs-light));
    border: 1px solid var(--bs-primary-border-subtle);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.course-ad .btn-primary {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
}

.course-ad .btn-primary:hover {
    background-color: var(--bs-primary-dark);
    border-color: var(--bs-primary-dark);
}