*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:Arial, sans-serif;
}

body{
    background:#f4f6f9;
}

/* LOGIN */

.login-container{
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
}

.login-box{
    width:380px;
    background:#fff;
    padding:40px;
    border-radius:16px;
    box-shadow:0 10px 35px rgba(0,0,0,.12);
}

.login-box h1{
    margin-bottom:25px;
    text-align:center;
}

.login-box input{
    width:100%;
    padding:15px;
    margin-bottom:15px;
    border:1px solid #ddd;
    border-radius:10px;
    font-size:15px;
}

.login-box button{
    width:100%;
    padding:15px;
    border:none;
    border-radius:10px;
    background:#0d6efd;
    color:white;
    font-size:16px;
    cursor:pointer;
}

.login-box button:hover{
    background:#0b5ed7;
}

.error{
    color:red;
    margin-bottom:15px;
    text-align:center;
}

/* BARRE SUPERIEURE */

.topbar{
    height:60px;
    background:white;
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:0 30px;
    box-shadow:0 2px 10px rgba(0,0,0,.08);
}

.title{
    font-size:18px;
    font-weight:600;
}

.logout{
    text-decoration:none;
    color:#dc3545;
}

/* IFRAME */

.iframe-container{
    height:calc(100vh - 60px);
}

.iframe-container iframe{
    width:100%;
    height:100%;
}