:root {
            --primary-color: #5865F2;
            --secondary-color: #6C63FF;
            --accent-color: #9EA4FF;
            --dark-bg: #050812;
            --card-bg: rgba(15, 20, 40, 0.9);
            --text-color: #ffffff;
            --light-text: #b0b3c5;
            --input-text: #ffffff;
            --error-color: #ff4757;
            --error-bg: rgba(255, 71, 87, 0.1);
        }
        
        body {
            min-height: 100vh;
            margin: 0;
            display: flex;
            flex-direction: column;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: var(--text-color);
            background: radial-gradient(circle at top, rgba(88, 101, 242, 0.25), transparent 55%),
                        #050812;
        }
        
        /* Wrapper to center the card in the remaining space */
        .auth-wrap {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        /* Brand header bar (top) */
        .brand-bar {
            background: rgba(5, 8, 18, 0.92);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(12px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
        }
        
        .brand-bar .container {
            display: flex;
            justify-content: flex-end;
        }
        
        .brand-title {
            color: #f5f7fb;
            font-weight: 600;
            font-size: 1.1rem;
        }
        
        .brand-logo {
            width: 40px;
            height: 40px;
            filter: drop-shadow(0 2px 6px rgba(0,0,0,.4));
        }

        /* إزالة حركة البطاقة عند التحويم */
        .login-card {
            border-radius: 16px;
            box-shadow: 
                0 8px 32px rgba(0, 0, 0, 0.5),
                0 4px 16px rgba(0, 0, 0, 0.3),
                0 2px 8px rgba(0, 0, 0, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.1),
                0 0 0 1px rgba(92, 101, 242, 0.2);
            overflow: hidden;
            background: var(--card-bg);
            backdrop-filter: blur(15px);
            border: 1px solid rgba(92, 101, 242, 0.25);
            width: 100%;
            max-width: 450px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .login-card:hover {
            transform: translateY(-2px);
            box-shadow: 
                0 12px 40px rgba(0, 0, 0, 0.6),
                0 6px 20px rgba(0, 0, 0, 0.4),
                0 3px 10px rgba(0, 0, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.15),
                0 0 0 1px rgba(92, 101, 242, 0.3);
        }
        
        .card-header {
            background: var(--card-bg);
            color: var(--primary-color);
            text-align: center;
            padding: 20px;
            border-bottom: 1px solid rgba(92, 101, 242, 0.2);
        }
        
        .logo-container {
            margin-bottom: 10px;
            position: relative;
        }
        
        .logo {
            height: 50px;
            filter: drop-shadow(0 0 6px rgba(120, 122, 255, 0.3));
        }
        
        .card-body {
            padding: 25px !important;
        }
        
        .form-control {
            padding: 10px 15px;
            border-radius: 8px;
            border: 1px solid rgba(158, 164, 255, 0.3);
            background: rgba(30, 35, 60, 0.7);
            color: var(--input-text);
            transition: all 0.3s;
            font-size: 0.9rem;
        }
        
        .form-control:focus {
            box-shadow: 0 0 0 3px rgba(120, 122, 255, 0.3);
            border-color: var(--primary-color);
            background: rgba(40, 45, 70, 0.8);
            color: var(--input-text);
        }
        
        .form-control::placeholder {
            color: rgba(200, 200, 220, 0.6);
            font-size: 0.85rem;
        }
        
        /* تنسيق الحقول عند وجود خطأ */
        .form-control.error {
            border-color: var(--error-color);
            background: var(--error-bg);
        }
        
        .form-control.error:focus {
            box-shadow: 0 0 0 3px rgba(255, 71, 87, 0.3);
        }
        
        .error-message {
            color: var(--error-color);
            font-size: 0.8rem;
            margin-top: 5px;
            display: flex;
            align-items: center;
            gap: 5px;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 4px 12px rgba(92, 101, 242, 0.3);
            font-size: 0.9rem;
        }
        
        .btn-primary:hover {
            background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
            box-shadow: 0 6px 15px rgba(92, 101, 242, 0.4);
        }
        
        .btn-secondary {
            background: rgba(158, 164, 255, 0.2);
            border-color: rgba(158, 164, 255, 0.3);
            color: var(--accent-color);
            padding: 10px 15px;
            font-size: 0.9rem;
        }
        
        .btn-secondary:hover {
            background: rgba(158, 164, 255, 0.3);
            border-color: var(--primary-color);
            color: var(--text-color);
        }
        
        .form-label {
            font-size: 0.9rem;
            margin-bottom: 8px;
            color: var(--accent-color);
        }
        
        h3 {
            font-size: 1.3rem;
            margin-bottom: 0;
            color: var(--primary-color);
            text-shadow: 0 0 8px rgba(120, 122, 255, 0.3);
        }
        
        /* تحسين رؤية النص في الحقول */
        .input-group input {
            color: #ffffff !important;
        }

        .input-group input::placeholder {
            color: rgba(200, 200, 220, 0.7) !important;
        }
        
        /* رسالة الخطأ العامة */
        .alert-danger {
            background-color: var(--error-bg);
            border-color: var(--error-color);
            color: var(--error-color);
            border-radius: 8px;
            margin-bottom: 15px;
            padding: 10px 15px;
        }
        
        .alert-success {
            background-color: rgba(40, 167, 69, 0.2);
            border-color: rgba(40, 167, 69, 0.5);
            color: #28a745;
            border-radius: 8px;
            margin-bottom: 15px;
            padding: 10px 15px;
        }
        
        .instructions {
            color: var(--light-text);
            font-size: 0.85rem;
            margin-top: 10px;
            text-align: center;
        }
        
        .info-box {
            background: rgba(158, 164, 255, 0.1);
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 20px;
            border-left: 3px solid var(--primary-color);
        }
        
        .info-box p {
            margin-bottom: 0;
            font-size: 0.85rem;
            color: var(--light-text);
        }