.error-message {
            color: #ff3333;
            font-size: 13px;
            margin-top: 5px;
            font-family: 'Roboto', sans-serif;
            display: none;
        }
        .loader {
            border: 2px solid #f3f3f3;
            border-top: 2px solid #bd1d1d;
            border-radius: 50%;
            width: 15px;
            height: 15px;
            animation: spin 1s linear infinite;
            display: inline-block;
            margin-right: 8px;
            vertical-align: middle;
        }
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        @media (max-width: 900px) {
            .loader {
                width: 10px;
                height: 10px;
                margin-right: 4px;
            }
        }
        body {
            margin: 0;
            padding: 0;
            font-family: 'Roboto', sans-serif;
            background-image: url('ChatGPT Image Jul 17, 2025, 11_10_11 PM.png');
            background-size: cover;
            background-repeat: no-repeat;
            background-attachment: fixed;
            min-height: 100vh;
        }

        .header {
            width: 100%;
            height: 60px;
            background-color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 1000;
            box-sizing: border-box;
        }

        .headerlogo {
            height: 200px;
            width: auto;
        }

        .nav {
            display: flex;
            gap: 20px;
        }

        .main-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding-top: 100px; /* separación desde el header */
            padding-bottom: 100px;
            box-sizing: border-box;
            min-height: 100vh;
            position: relative;
        }

        .main-content::before {
            content: "";
            background-image: url('advise.png');
            background-size: contain;
            background-repeat: no-repeat;
            position: absolute;
            left: 20px;
            top: 58%;
            transform: translateY(-50%);
            width: 100%;
            height: 75%;
            pointer-events: none;
        }

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

        .logo-top img.logo {
            width: 500px;
            max-width: 90%;
            filter: drop-shadow(0 0 5px rgba(156, 155, 155, 0.2));
        }

        .main-container {
            width: 560px;
            max-width: 90%;
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 0 20px rgb(215, 215, 215);
            text-align: center;
        }


        .btn1, .btn2 {
            text-decoration: none;
            font-family: 'Roboto', sans-serif;
            font-size: 14px;
            padding: 6px 12px;
            border-radius: 6px;
            border: 1px solid #bbbbbb;
            transition: background-color 0.3s ease;
        }

        .btn1 {
            color: #bd1d1d;
            font-weight: bold;
            background-color: #ffffff;
        }

        .btn2 {
            color: #000;
            font-weight: 400;
            background-color: #ffffff;
        }
        .inicia {
            font-size: 23px;
            font-weight: bold;
            color: #bd1d1d;
            margin-top: -10px;
        }
        .input-usuario {
            margin-top: 20px;
            text-align: left;
        }
        .labelusuario {
            font-size: 14px;
            color: #666666;
            font-weight: 600;
        }
        .userinput {
            background-color: #F2F2F2;
            border: none;
            border-radius: 15px;
            width: 96.5%;
            height: 40px;
            padding-left: 15px;
            margin-top: 5px;
            outline: none;
        }
        .input-contraseña {
            margin-top: 20px;
            text-align: left;
        }
        .labelcontraseña {
            font-size: 14px;
            color: #666666;
            font-weight: 600;
        }
        .userpassword {
            background-color: #F2F2F2;
            border: none;
            border-radius: 15px;
            width: 97%;
            height: 40px;
            padding-left: 15px;
            margin-top: 5px;
            outline: none;
        }
        .userinput::placeholder,
        .userpassword::placeholder {
            font-style: italic;
            font-weight: normal;
        }
        .userinput,
        .userpassword {
            font-style: normal;
            font-weight: 500;
        }
        .toggle {
            cursor: pointer;
            margin-top: 5px;
        }
        .toggle-eye {
            width: 40px;
            height: 40px;
            border: none;
            background: none;
            background-size: contain;
            background-repeat: no-repeat;
            background-position: center;
            cursor: pointer;
            margin-right: -65px;
            margin-top: 5px;
        }
        .password-container {
            position: relative;
            width: 93%;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 30px;
        }
        .submit-btn {
            width: 40%; 
            height: 40px; 
            background-color: #bd1d1d; 
            color: white; 
            border: none; 
            border-radius: 12px; 
            font-size: 14.5px; 
            font-weight: 500; 
            cursor: pointer; 
            margin-top: 20px; 
            font-family: 'Roboto', sans-serif;
        }
        .down-links {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            width: 560px;
            max-width: 90%;
            margin-bottom: 100px;
        }
        .prices {
            display: flex;
            justify-content: center;
            gap: 250px;
            margin-bottom: 50px;
            margin-top: 30px;
        }
        @media (max-width: 900px) {
            body {
                background-image: url('ChatGPT Image Jul 17, 2025, 11_10_11 PM.png');
                background-size: auto;
                background-repeat: no-repeat;
                margin: 0;
                padding: 0;
                overflow-x: hidden;
            }
            .header {
                height: 50px;
                display: flex;
                align-items: center;
                justify-content: space-between;
                padding: 0 12px;
                background-color: #ffffff;
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                z-index: 1000;
                box-sizing: border-box;
                flex-direction: row;
            }

            .headerlogo {
                height: 180px;
                width: auto;
                margin: 0;
                object-fit: contain;
            }
            .nav {
                gap: 5px;
                justify-content: right;
                display: none;
            }
            .btn1 {
                width: 10%;
                font-size: 10px;
                text-align: center;
                margin-top: -105px;
                padding-left: 6px;
                padding-right: 6px;
                padding-top: 6px;
                padding-bottom: 6px;
                height: 100%;
                display: none;
            }
            .btn2 {
                width: 12%;
                font-size: 10px;
                text-align: center;
                margin-top: -105px;
                padding-left: 6px;
                padding-right: 6px;
                padding-top: 6px;
                padding-bottom: 6px;
                height: 100%;
                display: none;
            }
            .main-container {
                padding: 20px;
                width: 300px;
            }

            .logo-top img.logo {
                width: 300px;
            }

            .nav {
                display: none; 
            }
            .inicia {
                margin-top: 0px;
            }
            .toggle {
                cursor: pointer;
            }
            .toggle-eye {
                width: 40px;
                height: 40px;
                border: none;
                background: none;
                background-size: contain;
                background-repeat: no-repeat;
                background-position: center;
                cursor: pointer;
                margin-left: -10px;
                margin-top: 7px;
            }
            .submit-btn {
                font-size: 12px;
            }
            .down-links {
                position: absolute;
                top: 93%;
                left: 50%;
                transform: translate(-50%, -50%);
                text-align: center;
                width: 560px;
                max-width: 90%;
                margin-bottom: 100px;
            }
            .prices {
                display: flex;
                justify-content: center;
                gap: 40px;
                margin-bottom: 50px;
                margin-top: 30px;
            }
            
            .main-content::before {
                display: none;
            }
        }