*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}
/* body */
body{
    min-height: 100vh;
    background-color: #f4f6f8;
    display: flex;
    flex-direction: column;
}
/* header */
header{
    background-color: #000;
    color: #fff;
    padding: 15px;
}
.logo{
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #fff;
    font-size: 22px;
    font-weight: bold;
}
.logo i{
    color: #fff;
    font-size: 22px;
}


main{
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}
.container{
    background-color: #fff;
    padding: 30px;
    width: 350px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.container h1{
    text-align: center;
    margin-bottom: 20px;
}
label{
    display: block;
    text-align: center;
    margin-bottom: 8px;
    font-weight: bold;
}
input{
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
}
button{
    width: 100%;
    padding: 10px;
    background-color: #000;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}
button i{
    margin-right: 6px;
}
button:hover{
    background-color: #333;
}
#message{
    margin-top: 15px;
    text-align: center;
    font-weight: bold;
}
.error{
    color: red;
}
.success{
    color: green;
}
footer{
    background-color: #000;
    color: #fff;
    text-align: center;
    padding: 10px;
    font-size: 14px;
}