/* Course Detail Page Styles */

/* Hero Section */
.course-hero {
    background: linear-gradient(135deg, #4f46e5 0%, #8b5cf6 100%);
    color: white;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.course-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29-22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 1;
}

.course-badge {
    display: inline-flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

/* Course Content */
.course-content-card {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    padding: 2rem;
    margin-bottom: 2rem;
}

.course-description {
    line-height: 1.7;
    color: #4b5563;
}

/* What You'll Learn */
.what-youll-learn {
    margin-bottom: 2rem;
}

.learn-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.learn-item i {
    color: #10b981;
    margin-right: 0.75rem;
    margin-top: 0.25rem;
    flex-shrink: 0;
}

/* Instructor Card */
.instructor-card {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.instructor-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Video Preview */
.video-preview {
    position: relative;
    border-radius: 0.75rem;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.btn-play-video {
    width: 64px;
    height: 64px;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    color: #4f46e5;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    transform: translate(-50%, -50%) scale(1);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.btn-play-video:hover {
    transform: translate(-50%, -50%) scale(1.1);
    background: white;
    color: #4338ca;
}

/* Course Curriculum */
.accordion-button:not(.collapsed) {
    background-color: #f9fafb;
    color: #111827;
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: none;
    border-color: #e5e7eb;
}

.accordion-button::after {
    background-size: 1rem;
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f3f4f6;
    border-radius: 0.5rem;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236b7280'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.accordion-button:not(.collapsed)::after {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236b7280'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
    transform: rotate(180deg);
}

/* Responsive Adjustments */
@media (max-width: 991.98px) {
    .course-hero {
        padding: 3rem 0;
    }
    
    .course-content-card {
        padding: 1.5rem;
    }
    
    .instructor-card {
        padding: 1.25rem;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c7d2fe;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a5b4fc;
}

/* Animation for course cards */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.course-animate {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* Loading skeleton */
.skeleton {
    background: linear-gradient(90deg, #f3f4f6 0%, #e5e7eb 50%, #f3f4f6 100%);
    background-size: 200% 100%;
    animation: skeleton 1.5s infinite;
    border-radius: 0.5rem;
}

@keyframes skeleton {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Tooltip custom styles */
.tooltip-inner {
    background-color: #4f46e5;
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
}

.bs-tooltip-auto[data-popper-placement^=top] .tooltip-arrow::before, 
.bs-tooltip-top .tooltip-arrow::before {
    border-top-color: #4f46e5;
}

/* Custom checkbox */
.form-check-input:checked {
    background-color: #4f46e5;
    border-color: #4f46e5;
}

/* Progress bar */
.progress {
    height: 8px;
    border-radius: 4px;
    background-color: #e5e7eb;
}

.progress-bar {
    background-color: #4f46e5;
    border-radius: 4px;
}

/* Badge styles */
.badge-outline {
    background-color: transparent;
    border: 1px solid #d1d5db;
    color: #4b5563;
    font-weight: 500;
    padding: 0.35rem 0.75rem;
    border-radius: 9999px;
}

/* Custom button styles */
.btn-outline-indigo {
    color: #4f46e5;
    border-color: #4f46e5;
}

.btn-outline-indigo:hover {
    background-color: #4f46e5;
    color: white;
}

/* Course rating stars */
.rating-stars {
    color: #f59e0b;
    font-size: 1.1rem;
    letter-spacing: 0.2rem;
}

/* Course meta info */
.course-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.course-meta i {
    margin-right: 0.3rem;
}

/* Course tags */
.course-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.course-tag {
    background-color: #eef2ff;
    color: #4f46e5;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Course requirements */
.requirements-list {
    list-style-type: none;
    padding-left: 0;
}

.requirements-list li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.75rem;
}

.requirements-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* Course sidebar */
.course-sidebar {
    position: relative;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
}

.course-sidebar .btn {
    font-weight: 600;
    transition: all 0.2s ease;
}

.course-sidebar .btn i {
    transition: transform 0.2s ease;
}

.course-sidebar .btn:hover i {
    transform: translateX(3px);
}

/* Course features grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.feature-item {
    text-align: center;
    padding: 1.5rem 1rem;
    background: #f9fafb;
    border-radius: 0.75rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background: #eef2ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #4f46e5;
    font-size: 1.5rem;
}

/* Testimonial section */
.testimonial-card {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    position: relative;
    margin: 1.5rem 0;
}

.testimonial-card::before {
    content: '"\201D';
    position: absolute;
    top: 1rem;
    right: 2rem;
    font-size: 5rem;
    color: #eef2ff;
    font-family: serif;
    line-height: 1;
    z-index: 0;
}

.testimonial-content {
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    margin-top: 1.5rem;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    margin-right: 1rem;
}

.testimonial-rating {
    color: #f59e0b;
    margin-bottom: 0.5rem;
}

/* FAQ Section */
.faq-item {
    margin-bottom: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    text-align: left;
    background: #f9fafb;
    border: none;
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    color: #111827;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
}

.faq-question:hover {
    background: #f3f4f6;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: #6b7280;
    transition: all 0.2s ease;
}

.faq-question[aria-expanded="true"]::after {
    content: '-';
}

.faq-answer {
    padding: 1.5rem;
    background: white;
    border-top: 1px solid #e5e7eb;
}