/* Reset and Base Styles */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary-blue: #1e3a8a;
            --secondary-blue: #1e40af;
            --light-blue: #3b82f6;
            --dark-blue: #172554;
            --gradient-blue: linear-gradient(135deg, #1e3a8a 0%, #1e40af 50%, #3b82f6 100%);
            --gradient-blue-reverse: linear-gradient(135deg, #3b82f6 0%, #1e40af 50%, #1e3a8a 100%);
            --text-primary: #1f2937;
            --text-secondary: #6b7280;
            --white: #ffffff;
            --light-gray: #f8fafc;
            --danger: #dc2626;
            --success: #16a34a;
            --warning: #d97706;
            --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Tajawal', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-primary);
            background: linear-gradient(135deg, var(--light-gray) 0%, #e2e8f0 100%);
            overflow-x: hidden;
            min-height: 100vh;
        }

        /* Arabic RTL Support */
        [dir="rtl"] {
            direction: rtl;
            text-align: right;
        }

        [dir="ltr"] {
            direction: ltr;
            text-align: left;
        }

        /* Language Toggle */
        .language-toggle {
            position: fixed;
            z-index: 1001;
            background: var(--gradient-blue);
            color: var(--white);
            border: none;
            padding: 10px 15px;
            border-radius: 25px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            box-shadow: var(--shadow);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        [dir="ltr"] .language-toggle {
            right: 20px;
            left: auto;
            top: 20px;
        }

        [dir="rtl"] .language-toggle {
            left: 20px;
            right: auto;
            top: 20px;
        }

        .language-toggle:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        /* Main Content */
        .main-content {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 40px 20px;
            position: relative;
        }

        .main-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><linearGradient id="grad1" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:%231e3a8a;stop-opacity:0.05"/><stop offset="100%" style="stop-color:%233b82f6;stop-opacity:0.05"/></linearGradient></defs><circle cx="200" cy="200" r="150" fill="url(%23grad1)"/><circle cx="800" cy="300" r="100" fill="url(%23grad1)"/><circle cx="600" cy="800" r="120" fill="url(%23grad1)"/></svg>');
            background-size: cover;
            opacity: 0.3;
        }

        .register-container {
            background: var(--white);
            border-radius: 20px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
            overflow: hidden;
            max-width: 1000px;
            width: 100%;
            display: grid;
            grid-template-columns: 1fr 1fr;
            position: relative;
            z-index: 1;
        }

        .register-left {
            background: var(--gradient-blue);
            color: var(--white);
            padding: 60px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .register-left::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
            background-size: 50px 50px;
            animation: float 20s linear infinite;
        }

        @keyframes float {
            0% { transform: translateY(0px); }
            100% { transform: translateY(-100px); }
        }

        .register-logo {
            margin-bottom: 30px;
        }

        .register-logo img {
            height: 80px;
            filter: brightness(0) invert(1);
        }

        .register-welcome h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .register-welcome p {
            font-size: 1.1rem;
            opacity: 0.9;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }

        .register-features {
            margin-top: 40px;
            position: relative;
            z-index: 1;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .feature-icon {
            width: 40px;
            height: 40px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }

        .register-right {
            padding: 60px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .register-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .register-header h1 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary-blue);
            margin-bottom: 10px;
        }

        .register-header p {
            color: var(--text-secondary);
            font-size: 1rem;
        }

        .register-form {
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }

        .form-group {
            position: relative;
        }

        .form-input {
            width: 100%;
            padding: 15px 50px 15px 15px;
            border: 2px solid #e5e7eb;
            border-radius: 12px;
            font-size: 16px;
            transition: var(--transition);
            background: var(--light-gray);
        }

        [dir="rtl"] .form-input {
            padding: 15px 15px 15px 50px;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--light-blue);
            background: var(--white);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }

        .form-input.error {
            border-color: var(--danger);
            background: #fef2f2;
        }

        .form-input.success {
            border-color: var(--success);
            background: #f0fdf4;
        }

        .form-icon {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-secondary);
            font-size: 18px;
            transition: var(--transition);
        }

        [dir="ltr"] .form-icon {
            right: 15px;
        }

        [dir="rtl"] .form-icon {
            left: 15px;
        }

        .form-input:focus + .form-icon {
            color: var(--light-blue);
        }

        .error-message {
            color: var(--danger);
            font-size: 14px;
            margin-top: 5px;
            display: none;
        }

        .password-toggle {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--text-secondary);
            cursor: pointer;
            font-size: 18px;
            transition: var(--transition);
        }

        [dir="ltr"] .password-toggle {
            right: 50px;
        }

        [dir="rtl"] .password-toggle {
            left: 50px;
        }

        .password-toggle:hover {
            color: var(--light-blue);
        }

        .password-strength {
            margin-top: 10px;
        }

        .password-strength-bar {
            height: 4px;
            background: #e5e7eb;
            border-radius: 2px;
            overflow: hidden;
            margin-bottom: 5px;
        }

        .password-strength-fill {
            height: 100%;
            transition: all 0.3s ease;
            border-radius: 2px;
        }

        .password-strength-text {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .strength-weak .password-strength-fill {
            width: 33%;
            background: var(--danger);
        }

        .strength-medium .password-strength-fill {
            width: 66%;
            background: var(--warning);
        }

        .strength-strong .password-strength-fill {
            width: 100%;
            background: var(--success);
        }

        .submit-btn {
            width: 100%;
            padding: 15px;
            background: var(--gradient-blue);
            color: var(--white);
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .submit-btn:hover {
            background: var(--gradient-blue-reverse);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .submit-btn:disabled {
            opacity: 0.7;
            cursor: not-allowed;
            transform: none;
        }

        .submit-btn .loading {
            display: none;
        }

        .submit-btn.loading .loading {
            display: inline-block;
            animation: spin 1s linear infinite;
        }

        .submit-btn.loading .btn-text {
            display: none;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .login-link {
            text-align: center;
            margin-top: 30px;
            color: var(--text-secondary);
        }

        .login-link a {
            color: var(--light-blue);
            text-decoration: none;
            font-weight: 600;
        }

        .login-link a:hover {
            text-decoration: underline;
        }

        .alert {
            padding: 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            display: none;
        }

        .alert.show {
            display: block;
        }

        .alert.success {
            background: #d1fae5;
            color: var(--success);
            border: 1px solid var(--success);
        }

        .alert.error {
            background: #fee2e2;
            color: var(--danger);
            border: 1px solid var(--danger);
        }

        .social-register {
            margin-top: 30px;
            text-align: center;
        }

        .social-divider {
            position: relative;
            margin: 20px 0;
            text-align: center;
            color: var(--text-secondary);
            font-size: 14px;
        }

        .social-divider::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 1px;
            background: #e5e7eb;
            z-index: 1;
        }

        .social-divider span {
            background: var(--white);
            padding: 0 15px;
            position: relative;
            z-index: 2;
        }

        .social-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            margin-top: 20px;
        }

        .social-btn {
            flex: 1;
            padding: 12px;
            border: 2px solid #e5e7eb;
            border-radius: 8px;
            background: var(--white);
            color: var(--text-secondary);
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
        }

        .social-btn:hover {
            border-color: var(--light-blue);
            color: var(--light-blue);
            transform: translateY(-2px);
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .register-container {
                grid-template-columns: 1fr;
                max-width: 500px;
            }

            .register-left {
                padding: 40px 30px;
            }

            .register-right {
                padding: 40px 30px;
            }

            .register-welcome h2 {
                font-size: 2rem;
            }

            .register-header h1 {
                font-size: 1.5rem;
            }

            .form-row {
                grid-template-columns: 1fr;
                gap: 25px;
            }

            .social-buttons {
                flex-direction: column;
            }
        }

        @media (max-width: 480px) {
            .main-content {
                padding: 20px 15px;
            }

            .register-left,
            .register-right {
                padding: 30px 20px;
            }

            .form-input {
                padding: 12px 40px 12px 12px;
            }

            [dir="rtl"] .form-input {
                padding: 12px 12px 12px 40px;
            }
        }

        /* Animation styles */
        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.02); }
            100% { transform: scale(1); }
        }

        .register-success {
            animation: pulse 0.6s ease-in-out;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .form-group {
            animation: fadeInUp 0.6s ease-out;
        }