body {
    width: 100%;
    margin: 0;
    padding: 0;
    background-color: rgb(254, 255, 255);
}
.main {
    max-width: 100%;
    margin: 0 auto;
}
.lop2 {
    background-color: rgb(221, 211, 211);
    height: 10%;
    margin: 0 auto;
}
.anh1 {
    width: 6%;
    margin: 0 auto;
    display: block;
    margin-left: 1%;
}
.anh2 {
    width: 15%;
    display: block;
    height: auto;
    margin: 0 auto;          /* căn giữa theo chiều ngang */
    display: block;
    margin-bottom: 5%;
}
.lop1 {
    position: absolute;
    top: 60%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40%;


}
.h1{
    font-size: 1.5vw;
    text-align: center;
}
.h3 {
    width: 100%;
    font-size: 1vw;
    text-align: center;
    color: red;
}
.bang {
    background-color: #ffffff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    max-width: 100%;
    margin: 10px auto;
    text-align: center;
}

#submitButton {
    width: 100%;
    padding: 2.5%;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
}
.form-group {
    position: relative;
    margin-bottom: 2%;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 2.9%;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;

    background-color: #fff;
    transition: border-color 0.3s ease;
}

.spinner {
    display: none; 
    width: 28px;
    height: 28px;   
    border: 2px solid white;
    border-left-color: rgb(0, 123, 255);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    position: absolute; 
    top: 22%;
    left: 49%; 

    
}
.button-text {
    display: inline-block; 
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.submit-container {
    position: relative;
    display: inline-block;
    width: 100%; 
}
#submitButton.hidden-text .button-text {
    visibility: hidden;
}
.row {
    position: relative;
    font-size: 0.9vw;
    color: red;
    margin: 0;
    text-align: left;
    bottom: 2px;
    left: 10px;
    min-height: 20px;
}
input::placeholder {
    color: transparent;
}

label.te {
    position: absolute;
    top: 50%; 
    left: 9px;
    font-size: 16px;
    color: #000000;
    transition: all 0.3s ease;
    pointer-events: none;
    transform: translateY(-50%); 
}

input:focus + label.te,
.form-group:focus-within label.te {
    bottom: 5%; 
    font-size: 12px;
    color: #007bff;
    transform: translateY(-100%); 
}

label.tex {
    font-size: 16px;
    cursor: pointer;
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
.thanhngang1{
    height: 1px;
    background-color: #07080b; 
    width: 100%;
}
.hh4{
    width: 100%;
    font-size: 0.6vw;
    text-align: center;
    margin-top: 1%;
}
.toggle-password {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    cursor: pointer;
    font-size: 18px;
    color: #333;
}
input.has-content + label.te {
    bottom: 5%; 
    font-size: 12px;
    color: #007bff;
    transform: translateY(-100%);
}
.keyboard-open {
    position: fixed; 
    height: 100%;
    overflow: hidden; 
}


@media (min-width: 240px) and (max-width: 768px) {
    .lop1{
        position: relative;
        top: 40%;
        transform: translate(-50%,2%);
        width: 90%;
    }
    .anh1{
        width: 20%;
    }
    .h1{
        font-size: 5vw;
    }
    .h3{
        font-size: 3.5vw;
    }
    input:focus + label.te,
    .form-group:focus-within label.te {
        font-size: 2vw;
        bottom: 3%; 
    }
    input.has-content + label.te {
        font-size: 2vw;
        bottom: 3%; 
    }
    .hh4{
        font-size: 2vw;
    }
    .spinner {
        width: 20px;
        height: 20px;   
    }
    .row{
        font-size: 3vw;
        transform: translateX(-6px);
    }
}
@media (min-width: 768px) and (max-width: 1200px) {
    .lop1{
        position: relative;
        top: 40%;
        transform: translate(-50%,2%);
        width: 60%;
    }
    .anh1{
        width: 15%;
    }
    .h1{
        font-size: 3vw;
    }
    .h3{
        font-size: 2vw;
    }
    input:focus + label.te,
    .form-group:focus-within label.te {
        font-size: 1vw;
        bottom: 3%; 
    }
    input.has-content + label.te {
        font-size: 1vw;
        bottom: 3%; 
    }
    .hh4{
        font-size: 1.5vw;
    }
    .spinner {
        width: 20px;
        height: 20px;   
    }
    .row{
        font-size: 1.7vw;
        transform: translateX(-6px);
    }
}
@media (min-width: 1200px) and (max-width: 1500px) {
    .lop1{
        position: relative;
        top: 40%;
        transform: translate(-50%,2%);
    }
}