@media (min-width: 850px) {
    body {
        margin: 0;
        padding: 0;
        font-family: Arial, sans-serif;
        /* fallback for no-JS; Login.cshtml's script randomizes this on load */
        background: url('/images/login/pexels-photo-268533.webp') no-repeat center center fixed;
        background-size: cover;
        height: 100vh;
        display: flex;
        justify-content: flex-end;
        align-items: center;
    }

    .login-wrapper {
        width: 30%;
        height: 100%;
        background-color: rgba(255, 255, 255, 0.55);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .login-container {
        background-color: rgba(255, 255, 255, 0.8);
        padding: 40px;
        border-radius: 10px;
        box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
        width: 350px;
        max-width: 100%;
    }

        .login-container h2 {
            text-align: center;
            margin-bottom: 20px;
            color: #333;
        }

        .login-container input[type="text"],
        .login-container input[type="password"] {
            width: calc(100% - 24px);
            padding: 12px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 5px;
        }

        .login-container input[type="submit"] {
            width: 100%;
            padding: 12px;
            background-color: #007bff;
            color: #fff;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }

            .login-container input[type="submit"]:hover {
                background-color: #0056b3;
            }

        .login-container .footer {
            text-align: center;
            margin-top: 20px;
            font-size: 14px;
            color: #555;
        }

            .login-container .footer a {
                color: #007bff;
                text-decoration: none;
            }

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

.header-content {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
}

.logoPTC {
    width: 50px;
    height: auto;
}

.time-display h1 {
    margin: 0;
    font-size: 18px;
    color: black;
}

.time-section {
    display: flex;
    flex-direction: column;
    align-items: center;
}

p {
    margin: 0;
    font-size: 18px;
    color: black;
    display: block;
}

@media (max-width: 768px) {
    body {
        font-size: 10px;
        justify-content: center;
        align-items: center;
    }

    .login-wrapper {
        width: 90%;
        height: auto;
        background-color: rgba(255, 255, 255, 0.8);
    }

    .login-container {
        width: 100%;
        max-width: none;
        padding: 20px;
    }

        .login-container input[type="submit"] {
            width: 50% !important;
            padding: 12px;
            background-color: #007bff;
            color: #fff;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }

        .login-container p {
            display: none;
        }

        .login-container .time-display {
            display: none;
        }

        .login-container .logoPTC {
            display: flex;
            justify-content: center;
            align-items: center;
        }
}

@media (max-width: 1025px) {
    body {
        background: url('/images/login/pexels-photo-268533.webp') no-repeat center center fixed;
        background-size: cover;
        height: 90vh;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .login-wrapper {
        width: 50%;
        max-width: 400px;
        height: auto;
        background-color: rgba(255, 255, 255, 0.95);
    }

    .login-container {
        width: 100%;
        max-width: none;
        padding: 20px;
    }

        .login-container h2 {
            text-align: center;
            margin-bottom: 20px;
            color: #333;
        }

        .login-container input[type="text"],
        .login-container input[type="password"] {
            width: calc(100% - 70px);
            padding: 12px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 5px;
        }

        .login-container input[type="submit"] {
            width: 90%;
            padding: 12px;
            background-color: #007bff;
            color: #fff;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }

            .login-container input[type="submit"]:hover {
                background-color: #0056b3;
            }

        .login-container .footer {
            text-align: center;
            margin-top: 20px;
            font-size: 14px;
            color: #555;
        }

            .login-container .footer a {
                color: #007bff;
                text-decoration: none;
            }

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

/* Hien loi dang nhap (ModelState) - chi to mau khi that su co loi:
   ASP.NET them class validation-summary-errors khi co loi, validation-summary-valid khi khong,
   nen nham vao class errors de khi binh thuong khong chiem cho trong form. */
.login-error.validation-summary-errors {
    background: #fdecec;
    border: 1px solid #f5b5b5;
    color: #b02a2a;
    border-radius: 6px;
    padding: 10px 12px;
    margin-bottom: 12px;
    font-size: 13.5px;
}

.login-error.validation-summary-errors ul {
    margin: 0;
    padding-left: 18px;
}

.login-error.validation-summary-valid {
    display: none;
}