@extends('admin.layouts.app')

@section('title', 'Course Content Management')

@section('content')
<div class="container-fluid mb-3">
    <div class="row">
        <div class="col-12">
            <div class="card">
                <div class="card-body pb-0">
                    <nav aria-label="breadcrumb" class="mb-0">
                        <ol class="breadcrumb breadcrumb-outer" style1="background-color: #efefef;padding: 7px!important;font-size: 14px!important;">
                            @if($course->category)
                                @foreach($course->category->ancestors() as $ancestor)
                                    <li class="breadcrumb-item"><a href="{{ url('admin/categories') }}">{{ $ancestor->title }}</a></li>
                                @endforeach
                                <li class="breadcrumb-item"><a href="{{ url('admin/categories') }}">{{ $course->category->title }}</a></li>
                            @endif
                            <li class="breadcrumb-item"><a href="{{ url('admin/courses') }}">Courses</a></li>
                            <li class="breadcrumb-item active">{{ $course->title }}</li>
                        </ol>
                    </nav>
                    <div class="title-section pt-1 ps-1">
                        <div class="d-flex align-items-center">
                            <div class="flex-shrink-0">
                                @php
                                    $thumbnailUrl = $course->thumbnail_url ? $course->thumbnail_url['thumb'] : null;
                                @endphp
                                
                                @if($thumbnailUrl)
                                    <img src="{{ $thumbnailUrl }}" alt="Course Content" 
                                    class="img-fluid img-thumbnail" 
                                    style="height: 90px; width: auto; object-fit: cover; border-radius: 4px;">
                                @else
                                    <div class="d-flex align-items-center justify-content-center bg-light border rounded" 
                                         style="height: 90px; width: 90px;">
                                        <i class="mdi mdi-image-off text-muted" style="font-size: 48px;"></i>
                                    </div>
                                @endif
                            </div>
                            <div class="flex-grow-1 ms-3">
                                <h5 class="text-muted" style="font-size: 1rem!important;">
                                    Content Management
                                </h5>
                                <h4 class="mb-1">{{ $course->title }}</h4>
                                <p class="text-muted mb-0">Manage course sections, units, and materials</p>
                            </div>
                            <div class="flex-shrink-0">
                                <button type="button" class="btn btn-outline-warning" 
                                        onclick="showAjaxModal('{{ route('admin.course-units.sort.view', $course->id) }}', 'Sort Sections')">
                                    <i class="mdi mdi-sort"></i> Sort Sections
                                </button>
                                <button type="button" class="btn btn-primary" 
                                        onclick="showAjaxModal('{{ route('admin.course-units.create', $course->id) }}', 'Add New section')">
                                    <i class="mdi mdi-plus"></i> Add Section
                                </button>
                            </div>
                        </div>
                    </div>
                </div>
                
            </div>

            {{-- section Cards - Vertical Layout --}}
            <div class="row">
                <div class="col-12">
                    @if($courseStructure->count() > 0)
                        <div class="sections-vertical-container">
                            @foreach($courseStructure as $index => $section)
                                <div class="shadow-pro">
                                    @include('admin.course_content.partials.section-card', [
                                        'section' => $section, 
                                        'index' => $index
                                        ])
                                </div>
                            @endforeach
                        </div>
                    @else
                        <div class="text-center py-5">
                            <i class="mdi mdi-folder-open text-muted" style="font-size: 48px;"></i>
                            <h5 class="text-muted mt-3">No sections found</h5>
                            <p class="text-muted">Start by creating your first section.</p>
                            <button type="button" class="btn btn-primary btn-clean" 
                                    onclick="showAjaxModal('{{ route('admin.course-units.create', $course->id) }}', 'Create First section')">
                                <i class="mdi mdi-plus"></i> Create First section
                            </button>
                        </div>
                    @endif
                </div>
            </div>
        </div>
    </div>
</div>

<style>
.breadcrumb-outer{
    background-color:rgba(239, 239, 239, 0.72);
    padding: 7px!important;
    font-size: 13px!important;
    border-radius: 5px;
}
.breadcrumb-outer .breadcrumb-item a{
    color:rgb(5, 70, 136)!important;
}
.breadcrumb-outer .breadcrumb-item a:hover{
    color:rgb(23, 128, 233)!important;
}
.breadcrumb-outer .breadcrumb-item a:active{
    color:rgb(51, 121, 191)!important;
}

.title-section {
    border: 1px solidrgb(231, 233, 240);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.title-section h4 {
    color: #2c3e50;
    font-weight: 600;
    margin: 0;
    font-size: 1.4rem;
}
</style>

<style>
/* Clean Title Section */


/* Clean section Cards Container */
.sections-vertical-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}


/* Clean section Header */
.section-header {
    background: #f8f9fa;
    border-bottom: 1px solid #e3e6f0;
    padding: 1.5rem;
}

/* Accordion section Header */
.section-header-accordion {
    background: #f8f9fa;
    border-bottom: 1px solid #e3e6f0;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.section-header-accordion:hover {
    background: #e9ecef;
}

.section-chevron {
    transition: transform 0.2s ease;
}

/* Simple section styling */
.section-card-simple {
    background: #fff;
    border: 0!important;
    border-radius: 8px;
    /* box-shadow: 0 2px 8px rgba(0,0,0,0.08); */
    overflow: hidden;
    transition: all 0.2s ease;
    /* margin-bottom: 1rem; */
}

.section-card-simple:hover {
    /* box-shadow: 0 4px 16px rgba(0,0,0,0.12); */
    border-color: #d1d5db;
}

.section-header-simple {
    background: #f8f9fa;
    border-bottom: 1px solid #e3e6f0;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.section-header-simple:hover {
    background: #e9ecef;
}

/* Section Image Container */
.section-image-container {
    flex-shrink: 0;
    margin-right: 1rem;
}

.section-thumbnail {
    width: 55px;
    height: 55px;
    border-radius: 8px;
    object-fit: cover;
    border: 1px solid #e3e6f0;
}

.section-thumbnail-placeholder {
    width: 55px;
    height: 55px;
    border-radius: 8px;
    background-color: #f8f9fa;
    border: 1px solid #e3e6f0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Section Content Info */
.section-content-info {
    min-width: 0; /* Allows text to wrap properly */
}

/* Section Meta and Actions */
.section-meta-actions {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.5rem;
}

/* Unit action buttons hover behavior - specific targeting */
.unit-action-buttons {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.unit-accordion:hover .unit-action-buttons {
    opacity: 1;
}

/* Level indicators for nested units */
.level-indicator {
    display: flex;
    align-items: center;
    min-width: 20px;
}

.level-line {
    width: 2px;
    height: 20px;
    background-color: #e3e6f0;
    margin-left: 10px;
}

/* Unit title and meta styling */
.unit-title-accordion {
    font-size: 0.95rem;
    font-weight: 500;
    color: #2c3e50;
    margin: 0;
}

.unit-meta-accordion {
    font-size: 0.8rem;
    color: #6c757d;
    margin-top: 0.25rem;
}

.unit-chevron {
    transition: transform 0.2s ease;
}

/* Unit accordion styling */
.unit-accordion {
    border-radius: 6px;
    margin-bottom: 0.5rem;
    background: #fff;
    overflow: hidden;
}

.unit-header-accordion {
    background: #f8f9fa;
    border-bottom: 1px solid #e3e6f0;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.unit-header-accordion:hover {
    background: #e9ecef;
}

.unit-content-accordion {
    padding: 0.5rem;
    background: #fafbfc;
}

.section-chevron {
    transition: transform 0.2s ease;
}

/* Single line layout for actions and units count */
.section-actions-meta-single-line {
    display: flex;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.section-card-simple:hover .section-actions-meta-single-line {
    opacity: 1;
}

.section-actions-meta-single-line > div {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-info-simple {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: -0.25rem;
}

.section-info-simple .badge {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.units-count-text {
    margin-bottom: 0.5rem;
}

.units-count-text .text-muted {
    font-size: 0.8rem;
    font-weight: 500;
}

.units-count-text .badge {
    font-size: 0.7rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-weight: 500;
}

/* Unit Number Badge for Inner Lessons */
.unit-number-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, #0ab39c 0%,rgb(8, 195, 170) 100%);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(40, 167, 69, 0.3);
    transition: all 0.5s ease;
}

.unit-number-badge:hover {
    transform: scale(1.3);
    box-shadow: 0 4px 8px rgba(40, 167, 69, 0.4);
}


.section-title-simple {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0.25rem 0 0.5rem 0;
    color: #2c3e50;
    line-height: 1.3;
}

.section-description-simple {
    font-size: 0.9rem;
    color: #6c757d;
    margin: 0;
    line-height: 1.4;
    max-width: 100%;
}


.section-footer-simple {
    background-color: #f8f9fa;
    border-top: 1px solid #e3e6f0;
    padding: 0.75rem 1.5rem;
}

.section-info-simple small{
    font-size: 0.75rem;
    color: #8b949e;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
    display: block;
}

.section-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 0;
    color: #2c3e50;
}

.section-description {
    font-size: 0.9rem;
    color: #6c757d;
    margin: 0.5rem 0 0 0;
}

.section-stats {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-top: 1rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stat-number {
    font-size: 1.2rem;
    font-weight: 600;
    color: #007bff;
}

.stat-label {
    font-size: 0.85rem;
    color: #6c757d;
}

.section-status-badges {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

/* Clean section Content */
.section-content {
    padding: 1.5rem;
}

/* Accordion section Content */
.section-content-accordion {
    padding: 1rem 1.5rem;
    /* border-top: 1px solid #e3e6f0; */
}

.units-container-fullscreen {
    background-color: #fafbfc;
    border: 1px solid #e3e6f0;
    border-radius: 6px;
    overflow: hidden;
}

.units-container-accordion {
    background-color: #fafbfc;
    border: 1px solid #e3e6f0;
    border-radius: 6px;
    overflow: hidden;
}

/* Clean Unit Items */
.unit-item {
    border-bottom: 1px solid #f1f3f4;
    transition: background-color 0.15s ease;
}

.unit-item:hover {
    background-color: #f8f9fa;
}

.unit-item:last-child {
    border-bottom: none;
}

/* Compact unit items for accordion */
.units-container-accordion .unit-item {
    border-bottom: 1px solid #f1f3f4;
}

.units-container-accordion .unit-content {
    padding: 0.5rem 0.75rem;
}

.units-container-accordion .unit-title {
    font-size: 0.9rem;
    font-weight: 500;
}

.units-container-accordion .unit-meta {
    font-size: 0.75rem;
    margin-top: 0.2rem;
}

.units-container-accordion .btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

/* Unit accordion styling */
.unit-accordion {
    /* border: 1px solid #e3e6f0; */
    border-radius: 6px;
    margin-bottom: 0.5rem;
    background: #fff;
    overflow: hidden;
}

.unit-header-accordion {
    background: #f8f9fa;
    border-bottom: 1px solid #e3e6f0;
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.unit-header-accordion:hover {
    background: #e9ecef;
}

.unit-title-accordion {
    font-size: 0.95rem;
    font-weight: 500;
    color: #374151;
    margin: 0;
}

.unit-meta-accordion {
    font-size: 0.75rem;
    color: #6b7280;
    margin-top: 0.2rem;
}

.unit-content-accordion {
    padding: 0.5rem;
    background: #fafbfc;
}

.unit-chevron {
    transition: transform 0.2s ease;
}

/* Simple unit items */
.unit-item-simple {
    border-bottom: 1px solid #f1f3f4;
    transition: background-color 0.15s ease;
}

.unit-item-simple:hover {
    background-color: #f8f9fa;
}

.unit-item-simple:last-child {
    border-bottom: none;
}

.unit-content-simple {
    padding: 0.5rem 0.75rem;
}

.unit-title-simple {
    font-size: 0.9rem;
    font-weight: 500;
    color: #374151;
    margin: 0;
}

.unit-meta-simple {
    font-size: 0.75rem;
    color: #6b7280;
    margin-top: 0.2rem;
}

/* Simplified Level Indicator */
.level-indicator {
    position: relative;
    display: flex;
    align-items: center;
    min-width: 20px;
}

.level-line {
    width: 1px;
    height: 16px;
    background-color: #d1d5db;
    margin-right: 8px;
}

/* Clean Unit Content */
.unit-content {
    padding: 0.75rem 1rem;
}

.unit-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: #374151;
    margin: 0;
    line-height: 1.4;
}

.unit-meta {
    font-size: 0.8rem;
    color: #6b7280;
    margin-top: 0.25rem;
}

/* Clean Materials Section */
.materials-section {
    background-color: #f0f9ff;
    border-left: 2px solid #0ea5e9;
    margin-left: 1rem;
}

.materials-header {
    cursor: pointer;
    transition: background-color 0.15s ease;
    padding: 0.5rem 0.75rem;
}

.materials-header:hover {
    background-color: #e0f2fe;
}

.materials-chevron {
    transition: transform 0.2s ease;
    font-size: 12px;
    color: #0ea5e9;
}

.materials-list {
    background-color: #fff;
}

.material-item {
    border-bottom: 1px solid #f1f5f9;
    padding: 0.5rem 0.75rem;
    transition: background-color 0.15s ease;
}

.material-item:hover {
    background-color: #f8fafc;
}

.material-item:last-child {
    border-bottom: none;
}

/* Clean Children Section */
.children-section {
    background-color: #f0fdf4;
    border-left: 2px solid #22c55e;
    margin-left: 1rem;
}

.children-header {
    cursor: pointer;
    transition: background-color 0.15s ease;
    padding: 0.5rem 0.75rem;
}

.children-header:hover {
    background-color: #dcfce7;
}

.children-chevron {
    transition: transform 0.2s ease;
    font-size: 12px;
    color: #22c55e;
}

.children-list {
    background-color: #fff;
}

/* Clean section Footer */
.section-footer {
    background-color: #f8f9fa;
    border-top: 1px solid #e3e6f0;
    padding: 1rem 1.5rem;
}

.section-actions {
    display: flex;
    gap: 0.75rem;
}

.section-info {
    font-size: 0.85rem;
    color: #6c757d;
    font-weight: 500;
}

/* Clean Empty State */
.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border: 2px dashed #d1d5db;
}

/* Clean Buttons */
.btn-clean {
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
    transition: all 0.15s ease;
}

.btn-clean:hover {
    transform: translateY(-1px);
}

/* Clean Badges */
.badge-clean {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-weight: 500;
}

/* Collapse Animation */
.collapse {
    transition: all 0.2s ease;
}

.collapse.show {
    display: block;
}

</style>
@endsection