:root { 
            --cis-red: #D32F2F; 
            --cis-gold: #B8860B; 
            --bg-gray: #f4f7f6; 
        }
        
        body { 
            background-color: var(--bg-gray); 
            font-family: 'Cairo', sans-serif;
            margin: 0;
            padding: 0;
        }

        .page-wrapper {
            padding: 30px 15px;
            max-width: 1200px;
            margin: 0 auto;
        }

        .search-box { 
            max-width: 900px; 
            margin: 0 auto 30px; 
            background: #fff; 
            padding: 25px; 
            border-radius: 15px; 
            box-shadow: 0 10px 25px rgba(0,0,0,0.05); 
            border-top: 5px solid var(--cis-red);
        }

        .search-title { 
            text-align: center; 
            margin-bottom: 20px; 
            color: var(--cis-red); 
            font-size: 1.2rem; 
            font-weight: bold; 
        }

        .grid-inputs { 
            display: grid; 
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); 
            gap: 15px; 
        }

        .input-group label { 
            display: block; 
            margin-bottom: 8px; 
            font-size: 0.9rem; 
            color: #555; 
        }

        .input-group input, 
        .input-group select { 
            width: 100%; 
            padding: 12px; 
            border: 2px solid #eee; 
            border-radius: 10px; 
            outline: none; 
            background: #fafafa;
            box-sizing: border-box;
            font-family: 'Cairo', sans-serif;
        }

        .input-group input:focus, 
        .input-group select:focus { 
            border-color: var(--cis-red); 
            background: #fff; 
        }

        .recaptcha-container {
            display: flex;
            justify-content: center;
            margin: 20px 0 10px;
        }

        .btn-query { 
            width: 100%;
            background: var(--cis-red); 
            color: #fff; 
            border: none; 
            padding: 14px; 
            border-radius: 10px; 
            cursor: pointer; 
            font-weight: bold; 
            font-size: 1rem; 
            margin-top: 15px;
            font-family: 'Cairo', sans-serif;
        }

        .btn-query:hover {
            background: #b5151a;
        }

        .cert-scroll-wrapper {
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 15px;
        }

        .certificate-container { 
            width: 210mm; 
            min-height: 297mm; 
            margin: 0 auto; 
            background: #fff; 
            padding: 15mm; 
            border: 2px solid var(--cis-red); 
            position: relative;
            box-shadow: 0 0 20px rgba(0,0,0,0.1); 
            direction: ltr;
            box-sizing: border-box;
        }
        
        .cert-header { 
            display: flex; 
            justify-content: space-between; 
            align-items: center; 
            margin-bottom: 25px; 
        }

        .header-side { 
            width: 35%; 
            font-size: 11px; 
            line-height: 1.6; 
            font-family: Arial, sans-serif;
        }

        .logo-center { 
            width: 25%; 
            text-align: center; 
        }

        .logo-center img { 
            width: 90px; 
            height: auto; 
        }

        .report-title { 
            text-align: center; 
            color: var(--cis-red); 
            font-size: 24px; 
            font-weight: 800;
            border-top: 3px solid var(--cis-red); 
            border-bottom: 3px solid var(--cis-red);
            padding: 8px 0; 
            margin: 20px 0; 
            letter-spacing: 1px;
            font-family: Arial, sans-serif;
        }

        .student-info-box { 
            display: grid; 
            grid-template-columns: 1fr 1fr; 
            gap: 10px; 
            margin-bottom: 25px; 
        }

        .info-field { 
            display: flex; 
            border: 1px solid var(--cis-red); 
        }

        .field-label { 
            background: var(--cis-red); 
            color: #fff; 
            padding: 6px 10px; 
            font-weight: bold; 
            width: 130px; 
            font-size: 12px;
            font-family: Arial, sans-serif;
        }

        .field-value { 
            padding: 6px 10px; 
            font-weight: bold; 
            color: #000; 
            flex: 1; 
            font-size: 12px;
            font-family: Arial, sans-serif;
        }

        .table-responsive {
            width: 100%;
            overflow-x: auto;
        }

        .grades-table { 
            width: 100%; 
            border-collapse: collapse; 
            margin-bottom: 25px; 
        }

        .grades-table th, 
        .grades-table td { 
            border: 1px solid #222; 
            padding: 8px; 
            text-align: center; 
            font-size: 12px;
            font-family: Arial, sans-serif;
        }

        .grades-table th { 
            background: #f3f4f6; 
            font-weight: bold; 
        }

        .subject-name { 
            text-align: left; 
            background: #fff8f8; 
            color: var(--cis-red); 
            font-weight: bold; 
            padding-left: 10px; 
        }

        .total-row { 
            background: #fee2e2; 
            font-weight: bold; 
        }

        .cert-footer { 
            margin-top: 30px; 
        }

        .footer-msg { 
            text-align: center; 
            color: var(--cis-red); 
            font-weight: bold; 
            font-size: 11px; 
            margin-bottom: 25px; 
            direction: rtl; 
        }

        .sigs { 
            display: grid; 
            grid-template-columns: 1fr 1fr; 
            gap: 20px; 
            font-size: 11px;
            font-family: Arial, sans-serif;
        }

        .sig-block { 
            border: 1px solid #ccc; 
            padding: 12px; 
            background: #fff;
        }

        .actions { 
            text-align: center; 
            margin-top: 30px; 
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
        }

        .btn { 
            padding: 10px 18px; 
            border-radius: 8px; 
            border: none; 
            cursor: pointer; 
            font-weight: bold; 
            text-decoration: none; 
            display: inline-flex; 
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-family: 'Cairo', sans-serif;
        }

        .btn-print { background: #333; color: #fff; }
        .btn-image { background: #2563eb; color: #fff; }
        .btn-share-img { background: #7c3aed; color: #fff; }
        .btn-back { background: #fff; color: #444; border: 1px solid #ccc; }

        /* قسم المشاركة الإضافي */
        .share-container {
            max-width: 900px;
            margin: 15px auto 0;
            padding: 15px;
            text-align: center;
            border-top: 1px solid #e5e7eb;
        }
        .share-title {
            margin: 0 0 10px;
            color: #6b7280;
            font-size: 0.85rem;
        }
        .share-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 8px;
        }
        .share-btn {
            padding: 8px 14px;
            border: 0;
            border-radius: 8px;
            color: #fff;
            cursor: pointer;
            font-size: 0.82rem;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-whatsapp { background: #25d366; }
        .btn-x { background: #111827; }
        .btn-copy { background: #6b7280; }

        /* شاشة التحميل (Loading Overlay) */
        .loading-overlay {
            position: fixed;
            inset: 0;
            z-index: 9999;
            display: none;
            align-items: center;
            justify-content: center;
            background: rgba(255,255,255,0.88);
            backdrop-filter: blur(4px);
        }
        .loading-overlay.active { display: flex; }
        .loading-box {
            width: min(90%, 320px);
            padding: 25px;
            border-radius: 15px;
            background: #fff;
            box-shadow: 0 15px 45px rgba(0,0,0,0.08);
            text-align: center;
            font-family: 'Cairo', sans-serif;
        }
        .loading-spinner {
            width: 38px;
            height: 38px;
            margin: 0 auto 12px;
            border: 4px solid #eee;
            border-top-color: var(--cis-red);
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }
        @keyframes spin { to { transform: rotate(360deg); } }

        @media print {
            * {
                -webkit-print-color-adjust: exact !important;
                print-color-adjust: exact !important;
            }
            body { 
                background: #fff !important; 
                padding: 0 !important; 
            }
            header, footer, .top-bar, .navbar, .mobile-sidebar, .menu-overlay, .search-box, .actions, .share-container, .btn-back, .loading-overlay { 
                display: none !important; 
            }
            .page-wrapper { padding: 0 !important; margin: 0 !important; max-width: none !important; }
            .cert-scroll-wrapper { overflow: visible !important; }
            .certificate-container { 
                box-shadow: none !important; 
                border: 2px solid var(--cis-red) !important; 
                margin: 0 auto !important; 
                width: 210mm !important; 
                min-height: 297mm !important;
            }
            @page { size: A4 portrait; margin: 0; }
        }

        @media (max-width: 800px) {
            .certificate-container {
                width: 100% !important;
                min-width: 100% !important;
                min-height: auto !important;
                padding: 12px !important;
            }
            .student-info-box { grid-template-columns: 1fr; }
            .header-side { font-size: 9px; }
            .report-title { font-size: 18px; }
            .sigs { grid-template-columns: 1fr; gap: 15px; }
        }