:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #f97316;
            --dark: #1e293b;
            --dark-light: #334155;
            --light: #f8fafc;
            --gray: #94a3b8;
            --gray-light: #e2e8f0;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
            --shadow-md: 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);
            --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
            --rounded-sm: 0.125rem;
            --rounded: 0.25rem;
            --rounded-md: 0.375rem;
            --rounded-lg: 0.5rem;
            --rounded-xl: 0.75rem;
            --rounded-full: 9999px;
            --max-width:100%;
            --content-max-width:100%;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            color: var(--dark);
            line-height: 1.5;
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif !important;
            line-height: 1.6;
        }

        .header-container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 1rem 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-left:0px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--primary);
            text-decoration: none;
            background-position-y:6px;
            font-weight:500;
        }

        .logo-icon {
            font-size: 1.2rem;
            color: var(--primary);
        }

        .nav-desktop {
            display: flex;
            gap: 1.5rem;
        }

        .nav-desktop a {
            color: var(--dark-light);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.2s;
            padding: 0.5rem 0.5rem;
            position: relative;
            font-size:1rem;
        }

        .nav-desktop a:hover {
            color: var(--primary);
        }

        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background-color: var(--primary);
            transition: width 0.3s;
        }

        .nav-desktop a:hover::after {
            width: 100%;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark);
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 62px;
            left: 0;
            right: 0;
            background-color: white;
            box-shadow: var(--shadow-md);
            padding: 1rem;
            z-index: 99;
        }

        .mobile-menu.main-menu-active {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 0.75rem 1rem;
            color: var(--dark-light);
            text-decoration: none;
            font-weight: 500;
            border-bottom: 1px solid var(--gray-light);
        }

        .mobile-menu a:hover {
            color: var(--primary);
            background-color: #f8fafc;
        }


        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            color: white;
            padding: 4rem 2rem;
        }

        .hero-container {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .hero-content {
        		margin:auto;
            flex: 1;
        }

        .hero-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            line-height: 1.2;
        }

        .hero-subtitle {
            font-size: 1.25rem;
            font-weight: 400;
            margin-bottom: 1.5rem;
            opacity: 0.9;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            margin-top: 2rem;
        }


        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.5rem;
            border-radius: var(--rounded-md);
            font-weight: 500;
            text-decoration: none;
            transition: all 0.2s;
            cursor: pointer;
            gap: 0.5rem;
        }

        .btn-primary {
            background-color: white;
            color: var(--primary);
            margin:auto;
        }

        .btn-primary:hover {
            background-color: #f8fafc;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .btn-secondary {
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .hero-image {
            flex: 1;
            display: flex;
            justify-content: center;
            align-items: center;
        }


        .hero-image img {
            max-width: 100%;
            height: auto;
            border-radius: var(--rounded-lg);
            box-shadow: var(--shadow-xl);
        }

        /* Main Content Sections */
        .section {
            padding: 4rem 2rem;
            /*max-width: 1200px;*/
            margin: 0 auto;
        }
				
        .section-title {
            font-size: 2rem;
            font-weight: 400;
            margin-bottom: 0rem;
            color: var(--dark);
            text-align: center;
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 80px;
            height: 4px;
            /*background-color: var(--primary);*/
            margin: 0rem auto;
            border-radius: var(--rounded-full);
        }

        .section-subtitle {
            font-size: 1.15rem;
            /*color: var(--dark-light);*/
            color:#878787;
            text-align: center;
            max-width: 800px;
            margin: 0 auto 5rem;
            margin-top: 1rem;
        }

        .card {
            background-color: white;
            border-radius: var(--rounded-lg);
            box-shadow: var(--shadow);
            padding: 2rem;
            margin-bottom: 2rem;
            transition: transform 0.3s, box-shadow 0.3s;
        }
				/*
        .card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        */

        .card-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--primary);
        }

        .card-content {
            color: var(--dark-light);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(20%, 1fr));
            gap: 1rem;
            margin-top: 2rem;
            text-align:center;
        }

        .feature-card {
            background-color: white;
            border-radius: var(--rounded-lg);
            box-shadow: var(--shadow);
            padding: 1.5rem;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .feature-icon {
            font-size: 2.5rem;
            color: #1d315f;
            margin-bottom: 1rem;
            opacity:0.6;
        }

        .feature-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            color: var(--dark);
        }

        .feature-desc {
            color: var(--dark-light);
            font-size: 0.95rem;
        }


        .highlight-list {
            list-style-type: none;
            margin-top: 1rem;
        }

        .highlight-list li {
            margin-bottom: 0.75rem;
            position: relative;
            padding-left: 1.75rem;
        }

        .highlight-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 0;
            color: var(--success);
        }


        /* Footer */
        footer {
            background-color: var(--dark);
            color: white;
            padding: 3rem 2rem;
        }

        .footer-container {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-weight: 700;
            font-size: 1.25rem;
            color: white;
            text-decoration: none;
            margin-bottom: 1rem;
        }

        .footer-logo-icon {
            font-size: 1.75rem;
            color: white;
        }

        .footer-about {
            margin-bottom: 1.5rem;
            color: var(--gray);
            font-size: 0.9rem;
        }

        .footer-links h3 {
            font-size: 1rem;
            font-weight: 400;
            margin-bottom: 1rem;
            color: white;
        }

        .footer-links ul {
            list-style-type: none;
        }

        .footer-links li {
            margin-bottom: 0.5rem;
        }

        .footer-links a {
            color: var(--gray);
            text-decoration: none;
            transition: color 0.2s;
            font-size: 0.9rem;
        }

        .footer-links a:hover {
            color: white;
        }

        .footer-social {
            display: flex;
            gap: 1rem;
            margin-top: 1rem;
        }

        .footer-social a {
            color: white;
            background-color: var(--dark-light);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background-color 0.2s;
        }

        .footer-social a:hover {
            background-color: var(--primary);
        }

        .footer-bottom {
            max-width: var(--max-width);
            margin: 2rem auto 0;
            padding-top: 1.5rem;
            border-top: 1px solid var(--dark-light);
            display: flex;
            justify-content: space-between;
            color: var(--gray);
            font-size: 0.85rem;
        }


        /* Admin Dashboard Styles */
        .admin-container {
            display: flex;
            min-height: 100vh;
        }

        .admin-sidebar {
            width: 240px;
            background-color: var(--dark);
            color: white;
            transition: all 0.3s;
            position: fixed;
            height: 100vh;
            z-index: 100;
        }

        .admin-sidebar-header {
            padding: 1.5rem;
            border-bottom: 1px solid var(--dark-light);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .admin-sidebar-logo {
            font-weight: 600;
            font-size: 1.1rem;
        }

        .admin-menu {
            padding: 1rem 0;
        }

        .menu-group {
            margin-bottom: 1.5rem;
        }

        .menu-group-title {
            padding: 0.5rem 1.5rem;
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--gray);
            font-weight: 600;
        }

        .menu-item {
            display: flex;
            align-items: center;
            padding: 0.75rem 1.5rem;
            color: var(--gray);
            text-decoration: none;
            transition: all 0.2s;
            gap: 0.75rem;
        }

        .menu-item:hover {
            background-color: var(--dark-light);
            color: white;
        }

        .menu-item.active {
            background-color: var(--primary);
            color: white;
        }

        .menu-item i {
            width: 20px;
            text-align: center;
        }

        .admin-main {
            flex: 1;
            margin-left: 240px;
            background-color: #f1f5f9;
            min-height: 100vh;
        }

        .admin-header {
            background-color: white;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 90;
        }

        .admin-header-title {
            font-weight: 600;
            color: var(--dark);
        }

        .admin-user {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .admin-user-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background-color: var(--primary);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
        }

        .admin-content {
            padding: 2rem;
        }

        .admin-card {
            background-color: white;
            border-radius: var(--rounded-lg);
            box-shadow: var(--shadow);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .admin-card-title {
            font-size: 1.25rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--dark);
        }


        /* Responsive Styles */
        @media (max-width: 1024px) {
            .hero-container {
                flex-direction: column;
            }
            
            .hero-content {
                text-align: center;
            }
            
            .hero-buttons {
                justify-content: center;
            }
        }
        
        @media (max-width: 1000px) {
            .nav-desktop a {
            	padding-right: 0.3rem;
        			padding-left: 0.3rem;
            }
            .nav-desktop{
            	gap: 0.4rem;
            }
        }


        @media (max-width: 768px) {
        		.header-bar{
        			position: sticky;
            	top: 0;
            	z-index: 100;
        		}
            .nav-desktop {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .section {
                padding: 3rem 1.5rem;
            }
            
            .hero-title {
                font-size: 2rem;
            }
            
            .hero-subtitle {
                font-size: 1.1rem;
            }
            
            .admin-sidebar {
                transform: translateX(-100%);
            }
            
            .admin-sidebar.active {
                transform: translateX(0);
            }
            
            .admin-main {
                margin-left: 0;
            }
            
            .mobile-menu-toggle {
                display: block;
            }
            .features-grid {
		            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
		        }
		        .footer-bottom{
		        	display:block;
		        }
		        #privacy-item{
		        	margin-top:10px;
		        }
		        .footer-about,.footer-links a{
		        	font-size:1rem;
		        }
        }
        .footer-logo,.head-logo{
            text-decoration:none;
            font-weight:500;
        }
        .footer-logo::after,.head-logo::after{
            content:'SQLMessenger'
        }
        .head-image{
			    background-image: url(/images/about_sqlmessager-1.png);
			    opacity: 0.9;
			    height: 130px;
			    display: block;
			    background-size: 500px;
			    background-repeat: no-repeat;
			    margin-left: auto;
			    margin-right: auto;
			    margin-bottom: 3rem;
			    background-position: center;
        }
        .head-caption{
            text-shadow: 1px 1px 1px #a5acb3;
            font-size:2rem;
        }
        #home{
            background-image: url(/images/ad/pexels-photo-314726.jpeg);
            background-size: cover;
            height:400px;
        }

        @media (max-width: 640px) {
            .hero-buttons {
                flex-direction: column;
                gap: 0.75rem;
            }
            .head-image{
               margin-bottom:2rem; 
            }
            .btn {
                width: 100%;
            }
            
            .footer-container {
                grid-template-columns: 1fr;
            }
            
            .head-caption{
                text-shadow: 1px 1px 1px #000000;
                color: #ffffff;
                opacity: 0;
            }
            #home{
                height:200px;
            }
            
            .features-grid {
		            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
		        }
        }

        /* Mobile menu toggle for admin */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--dark);
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        .logo-icon{
            background-image:url(/images/easysqlmail.png);
        }
        .logo{        	
        	background-repeat:no-repeat;
        	background-size:24px;
        	padding-left:30px;
        	color:#19243d;
        	font-size:1.2rem;
        	background-position-y:4px;
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
        }
        .footer-logo{
            background-repeat:no-repeat;
        	background-size:30px;
        	padding-left:35px;
        	color:#ffffff;
        }
        .blue-btn {
            width: 166px;
            height: 46px;
            border: none;
            color: #fff;
            line-height: 46px;
            font-size: 14px;
            display: inline-block;
            text-align: center;
            position: relative;
            background-color: #4581fb;
            transition: all 0.75s ease;
            text-decoration:none;
        }
        .blue-btn:hover {
            background-color: #2769ed;
        }
        /* ¿Í»§Õ¹Ê¾ */
        .clients {
            background-color: var(--light-color);
        }
        
        .client-logos {
          display: flex;
			    flex-wrap: wrap;
			    justify-content: left;
			    gap: 30px;
			    align-items: baseline;
        }
        
        .client-logo {
            max-width: 150px;
            height: auto;
            filter: grayscale(100%);
            opacity: 0.7;
            transition: all 0.3s;
        }
        
        .client-logo:hover {
            filter: grayscale(0);
            opacity: 1;
        }
        .section-subtitle-middle{
            margin-bottom:1rem;
        }
        .customer-title{
        	margin-bottom:1rem;
        	margin-top:-2rem;
        }
        .a-none{
        	text-decoration:none;
        	color:unset;
        }
        .a-none:hover{
        	color:white;
        }
        footer a:hover{
        	color:white !important;
        }
        .active-menu-item::after{
        		width: 100% !important
        }
        html, body {
				  height: 100%;
				  margin: 0;
				}
				body {
				  display: flex;
				  flex-direction: column;
				}
				.content-body{
					flex: 1;
				}
				h2{
					font-size:1.2rem;
				}