*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{

    font-family: 'Segoe UI', Tahoma, sans-serif;

    background:
        linear-gradient(
            135deg,
            #0f172a,
            #1e3a8a
        );

    height:100vh;

    display:flex;
    justify-content:center;
    align-items:center;

    padding:20px;
}

.login-container{

    width:100%;
    max-width:420px;
}

.login-card{

    background:#ffffff;

    border-radius:18px;

    padding:40px;

    box-shadow:
        0 15px 40px rgba(0,0,0,0.25);

    animation:fadeIn 0.5s ease;
}

.logo-circle{

    width:90px;
    height:90px;

    border-radius:50%;

    background:
        linear-gradient(
            135deg,
            #2563eb,
            #1d4ed8
        );

    color:white;

    font-size:42px;

    display:flex;
    justify-content:center;
    align-items:center;

    margin:auto;
    margin-bottom:25px;
}

.title{

    text-align:center;

    font-size:28px;

    color:#0f172a;

    margin-bottom:10px;

    font-weight:700;
}

.subtitle{

    text-align:center;

    color:#64748b;

    margin-bottom:35px;

    font-size:15px;
}

.form-group{

    margin-bottom:22px;
}

.form-group label{

    display:block;

    margin-bottom:8px;

    color:#334155;

    font-size:14px;

    font-weight:600;
}

.form-group input{

    width:100%;

    padding:14px 16px;

    border:1px solid #cbd5e1;

    border-radius:10px;

    font-size:15px;

    transition:0.3s;
}

.form-group input:focus{

    outline:none;

    border-color:#2563eb;

    box-shadow:
        0 0 0 4px rgba(37,99,235,0.15);
}

.btn-login{

    width:100%;

    padding:15px;

    border:none;

    border-radius:10px;

    background:
        linear-gradient(
            135deg,
            #2563eb,
            #1d4ed8
        );

    color:white;

    font-size:16px;

    font-weight:700;

    cursor:pointer;

    transition:0.3s;
}

.btn-login:hover{

    transform:translateY(-2px);

    box-shadow:
        0 10px 20px rgba(37,99,235,0.3);
}

@keyframes fadeIn{

    from{

        opacity:0;
        transform:translateY(20px);
    }

    to{

        opacity:1;
        transform:translateY(0);
    }
}

/* RESPONSIVE */

@media(max-width:768px){

    .login-card{

        padding:30px;
    }

    .title{

        font-size:24px;
    }
}