.
        <style>
        :root {
            --primary-color: #1e8e3e;
            --primary-dark: #166e2f;
            --primary-light: #e8f5e9;
            --text-color: #333333;
            --text-light: #ffffff;
            --background-light: #f9f9f9;
            --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.08);
            --shadow-medium: 0 5px 15px rgba(0, 0, 0, 0.1);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.15);
            --transition-quick: all 0.2s ease;
            --transition-normal: all 0.3s ease;
            --border-radius: 12px;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: var(--background-light);
            color: var(--text-color);
            direction: rtl;
            line-height: 1.6;
        }
        
        /* Header Styles */
        .header {
            background-color: var(--primary-color);
            color: var(--text-light);
            padding: 1.5rem 0;
            position: relative;
            box-shadow: var(--shadow-medium);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
        }
        
        .logo-container {
            display: flex;
            align-items: center;
        }
        
        .logo {
            width: 160px;
            height: auto;
            transition: var(--transition-quick);
        }
        
        .logo:hover {
            transform: scale(1.05);
        }
        
        .welcome-text {
            font-size: 1.4rem;
            font-weight: 500;
            margin-right: 1.5rem;
        }
        
        .user-controls {
            display: flex;
            gap: 1rem;
        }
        
        .btn {
            padding: 0.75rem 1.5rem;
            background-color: var(--primary-color);
            color: var(--text-light);
            border: none;
            border-radius: 6px;
            font-size: 0.95rem;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition-normal);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-light);
        }
        
        .btn:active {
            transform: translateY(0);
        }
        
        .btn i {
            font-size: 0.9rem;
        }
        
        .header-btn {
            background-color: rgba(255, 255, 255, 0.2);
        }
        
        .header-btn:hover {
            background-color: rgba(255, 255, 255, 0.3);
        }
        
        /* Dropdown Styles */
        .dropdown {
            position: relative;
        }
        
        .dropdown-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            margin-top: 0.75rem;
            background-color: white;
            border-radius: 8px;
            min-width: 200px;
            box-shadow: var(--shadow-medium);
            z-index: 100;
            overflow: hidden;
        }
        
        .dropdown-menu a {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 0.875rem 1.25rem;
            color: var(--text-color);
            text-decoration: none;
            transition: var(--transition-quick);
            font-size: 0.95rem;
        }
        
        .dropdown-menu a:hover {
            background-color: var(--primary-light);
            color: var(--primary-color);
        }
        
        .dropdown-menu a i {
            color: var(--primary-color);
            font-size: 1rem;
        }
        
        /* Main Content Styles */
        .main {
            /* max-width: 1800px; */
            margin: 0 auto;
            padding: 2.5rem 2rem;
        }
        
        .page-title {
            font-size: 1.75rem;
            color: var(--primary-color);
            margin-bottom: 1.5rem;
            font-weight: 600;
            position: relative;
            display: inline-block;
        }
        
        .page-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            right: 0;
            width: 50px;
            height: 4px;
            background-color: var(--primary-color);
            border-radius: 2px;
        }
        
        .info-card {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-light);
            padding: 1.25rem;
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .info-card-content {
            display: flex;
            align-items: center;
            gap: 1rem;
        }
        
        .info-card-icon {
            font-size: 2rem;
            color: var(--primary-color);
            background-color: var(--primary-light);
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
        }
        
        .info-card-text {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-color);
        }
        
        /* Search Container */
        .search-container {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-light);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }
        
        .search-field {
            flex: 1;
            min-width: 220px;
        }
        
        .search-field input {
            width: 100%;
            padding: 0.75rem 1rem;
            border: 1px solid #ddd;
            border-radius: 6px;
            font-size: 0.95rem;
            transition: var(--transition-quick);
        }
        
        .search-field input:focus {
            border-color: var(--primary-color);
            outline: none;
            box-shadow: 0 0 0 2px rgba(30, 142, 62, 0.2);
        }
        
        .search-actions {
            display: flex;
            gap: 0.75rem;
        }
        
        .card-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 1.5rem;
        }
        .student-card {
            background-color: #fff;
            border-radius: 10px;
            padding: 1rem 1.5rem;
            box-shadow: 0 4px 10px rgba(0,0,0,0.1);
            transition: 0.3s;
        }
        .student-card:hover {
            box-shadow: 0 6px 14px rgba(0,0,0,0.15);
        }
        .card-header {
            font-weight: bold;
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }
        .card-detail {
            margin: 0.25rem 0;
            color: #555;
        }
        .card-actions {
            margin-top: 1rem;
            display: flex;
            justify-content: space-between;
        }
        .btn {
            padding: 0.4rem 1rem;
            border: none;
            border-radius: 5px;
            font-size: 0.9rem;
            cursor: pointer;
        }
        .btn-edit {
            background-color: #3498db;
            color: white;
        }
        .btn-showmore {
            background-color: #2ecc71;
            color: white;
        }
        .extra-info {
            display: none;
            margin-top: 1rem;
            font-size: 0.9rem;
        }

        /* Table Styles */
        .table-container {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow-light);
            /* overflow: hidden; */
            margin-bottom: 1.5rem;
        }
        
        table {
            width: 100%;
            min-width: 2000px; /* increase if needed */
            /* border-collapse: collapse; */
        }
        
        th, td {
            padding: 1rem;
            text-align: right;
            border-bottom: 1px solid #eee;
        }
        
        th {
            background-color: #f5f5f5;
            font-weight: 600;
            color: var(--primary-color);
        }
        
        tr:hover {
            background-color: var(--primary-light);
        }
        
        td select, td input[type="date"] {
            width: 100%;
            padding: 0.5rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 0.9rem;
        }
        
        td textarea {
            width: 100%;
            height: 80px;
            padding: 0.5rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            resize: vertical;
            font-size: 0.9rem;
        }
        
        .action-buttons {
            display: flex;
            gap: 0.5rem;
        }
        
        .btn-edit {
            background-color: #3498db;
        }
        
        .btn-edit:hover {
            background-color: #2980b9;
        }
        
        .btn-delete {
            background-color: #e74c3c;
        }
        
        .btn-delete:hover {
            background-color: #c0392b;
        }
        
        /* Action Buttons */
        .actions-container {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1.5rem;
        }
        
        /* Footer Styles */
        .footer {
            background-color: var(--primary-dark);
            color: var(--text-light);
            padding: 1.5rem 0;
            text-align: center;
            margin-top: 2rem;
        }
        
        .footer-content {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            font-size: 0.9rem;
        }
        
        /* Print Styles */
        @media print {
            .header, .search-container, .actions-container, .footer {
                display: none;
            }
            
            body {
                background-color: white;
            }
            
            .main {
                padding: 0;
            }
            
            .table-container {
                box-shadow: none;
            }
            
            td textarea, td select, td input {
                border: none;
            }
            
            th, td {
                padding: 0.5rem;
                font-size: 10pt;
            }
            
            .action-buttons {
                display: none;
            }
        }
        
        /* Responsive Styles */
        @media (max-width: 900px) {
            .header-container {
                flex-direction: column;
                gap: 1rem;
            }
            
            .user-controls {
                margin-top: 1rem;
            }
            
            .search-container {
                flex-direction: column;
            }
            
            .search-field {
                width: 100%;
            }
            
            .table-container {
                overflow-x: auto;
            }
            
            table {
                min-width: 1000px;
            }
        }
        
        @media (max-width: 600px) {
            .logo {
                width: 140px;
            }
            
            .welcome-text {
                font-size: 1.1rem;
            }
            
            .user-controls {
                flex-direction: column;
                width: 100%;
            }
            
            .btn {
                width: 100%;
                justify-content: center;
            }
            
            .dropdown-menu {
                width: 100%;
            }
        }
    </style>

    <!-- Header Section -->
    <header class="header">
        <div class="header-container">
            <div class="logo-container">
                <a href="index.php">
                    <img src="logo.jpg" alt="شعار" class="logo">
                </a>
                <div class="welcome-text">مرحباً بك في نظام إدارة المتدربين</div>
            </div>
            
            <div class="user-controls">
                <div class="dropdown">
                    <button class="btn" onclick="toggleDropdown()">
                        <i class="fas fa-cog"></i>
                        الإعدادات
                    </button>
                    <div class="dropdown-menu" id="settings-menu">
                        <a href="Training_Halls.php">
                            <i class="fas fa-chalkboard"></i>
                            القاعات
                        </a>
                        <a href="preferences.php">
                            <i class="fas fa-sliders-h"></i>
                            التفضيلات
                        </a>
                        <a href="security.php">
                            <i class="fas fa-shield-alt"></i>
                            الأمان
                        </a>
                    </div>
                </div>
                                    <button class="btn" onclick="window.location.href='login.php';">
                        <i class="fas fa-sign-in-alt"></i>
                        تسجيل الدخول
                    </button>
                            </div>
        </div>
    </header>