{{-- Khu vực Tìm kiếm và Lọc --}}
<div class="space-y-5 text-sm" id="form-filter-tab3">

    {{-- Bộ lọc --}}
    <div class="grid grid-cols-1 gap-5 mb-4">

        {{-- Khóa học --}}
        <div>
            <label class="block text-[13px] font-semibold text-slate-700 mb-1.5">Khóa học</label>
            <select id="grading_course_search" multiple class="select2-custom w-full"></select>
        </div>

        {{-- Bài kiểm tra --}}
        <div>
            <label class="block text-[13px] font-semibold text-slate-700 mb-1.5">Bài kiểm tra</label>
            <select id="grading_section_search" multiple class="select2-custom w-full"></select>
        </div>

        {{-- Thời gian --}}
        <div>
            <label class="block text-[13px] font-semibold text-slate-700 mb-1.5">Thời gian</label>
            <div class="flex items-center gap-3">
                {{-- Thời gian bắt đầu --}}
                <div class="relative w-full">
                    <div class="absolute inset-y-0 left-0 flex items-center pl-3 pointer-events-none text-slate-400">
                        <i data-lucide="calendar" class="w-4 h-4"></i>
                    </div>
                    <input type="text" id="grading_start_assign_time" placeholder="Bắt đầu"
                        class="w-full border border-slate-200 rounded-lg shadow-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500 py-2.5 pl-9 pr-8 text-sm outline-none transition-all placeholder:text-slate-400">
                    <button id="grading_btn-clear-start-assign-time" class="hidden absolute inset-y-0 right-0 flex items-center pr-2.5 text-slate-400 hover:text-rose-500 transition-colors">
                        <i data-lucide="x-circle" class="w-4 h-4"></i>
                    </button>
                </div>
        
                {{-- Thời gian kết thúc --}}
                <div class="relative w-full">
                    <div class="absolute inset-y-0 left-0 flex items-center pl-3 pointer-events-none text-slate-400">
                        <i data-lucide="calendar-check" class="w-4 h-4"></i>
                    </div>
                    <input type="text" id="grading_end_assign_time" placeholder="Kết thúc"
                        class="w-full border border-slate-200 rounded-lg shadow-sm focus:border-blue-500 focus:ring-1 focus:ring-blue-500 py-2.5 pl-9 pr-8 text-sm outline-none transition-all placeholder:text-slate-400">
                    <button id="grading_btn-clear-end-assign-time" class="hidden absolute inset-y-0 right-0 flex items-center pr-2.5 text-slate-400 hover:text-rose-500 transition-colors">
                        <i data-lucide="x-circle" class="w-4 h-4"></i>
                    </button>
                </div>
            </div>
        </div>

        {{-- Lớp --}}
        <div>
            <label class="block text-[13px] font-semibold text-slate-700 mb-1.5">Lớp</label>
            <select id="grading_class_search" multiple class="select2-custom w-full"></select>
        </div>

        {{-- Học viên --}}
        <div>
            <label class="block text-[13px] font-semibold text-slate-700 mb-1.5">Học viên</label>
            <select id="grading_student_search" multiple class="select2-custom w-full"></select>
        </div>
        
        {{-- Trạng thái --}}
        <div>
            <label class="block text-[13px] font-semibold text-slate-700 mb-1.5">Trạng thái</label>
            <select id="grading_status_search" multiple class="select2-custom w-full" placeholder="Chọn trạng thái...">
                <optgroup label="TRẠNG THÁI CHẤM">
                    <option value="hoan_thanh">Hoàn thành</option>
                    <option value="cho_cham">Chờ chấm</option>
                </optgroup>

                <optgroup label="TRẠNG THÁI THỜI GIAN">
                    <option value="dung_han">Đúng hạn</option>
                    <option value="qua_han">Quá hạn</option>
                </optgroup>
            </select>
        </div>

        {{-- Loại bài thi (Nút bấm liền kề) --}}
        <div>
            <label class="block text-[13px] font-semibold text-slate-700 mb-1.5">Loại bài thi</label>
            
            <div class="relative flex p-1 bg-slate-100/80 border border-slate-200 rounded-lg shadow-inner">
                
                <input type="radio" id="exam_new_grading" name="grading_type_exam" value="new_exam" class="peer/new sr-only" checked>
                <input type="radio" id="exam_retake_grading" name="grading_type_exam" value="retake_exam" class="peer/retake sr-only">

                <div class="absolute inset-y-1 left-1 w-[calc(50%-4px)] bg-white rounded-md shadow-sm transition-transform duration-300 ease-out peer-checked/retake:translate-x-full"></div>

                <label for="exam_new_grading" class="flex-1 text-center cursor-pointer relative z-10 py-1.5 text-[13px] font-medium transition-colors duration-300 text-slate-500 peer-checked/new:text-blue-600 peer-checked/new:font-bold">
                    Thi mới
                </label>

                <label for="exam_retake_grading" class="flex-1 text-center cursor-pointer relative z-10 py-1.5 text-[13px] font-medium transition-colors duration-300 text-slate-500 peer-checked/retake:text-blue-600 peer-checked/retake:font-bold">
                    Thi lại
                </label>
                
            </div>
        </div>

        {{-- Tìm người chấm --}}
        <div>
            <label class="block text-[13px] font-semibold text-slate-700 mb-1.5">Tìm người chấm</label>
            <select id="grading_teacher_search" multiple class="select2-custom w-full"></select>
        </div>

    </div>

    {{-- Nút Lọc --}}
    <div class="pt-4" id="grading_btnFilter">
        <button type="button" class="w-full flex items-center justify-center gap-2 px-6 py-2.5 bg-gradient-to-r from-blue-600 to-indigo-600 hover:from-blue-700 hover:to-indigo-700 text-white font-bold rounded-lg shadow-md hover:shadow-lg transition-all active:scale-[0.98] hover:-translate-y-0.5 group">
            <i data-lucide="filter" class="w-4 h-4 group-hover:-translate-y-0.5 transition-transform"></i> LỌC DỮ LIỆU
        </button>
    </div>

</div>