* {
    box-sizing: border-box;
}


body {

    margin: 0;

    min-height: 100vh;

    display: flex;

    justify-content: center;

    align-items: flex-start;

    padding-top: 25px;

    background: linear-gradient(135deg, #eef2f3, #dfe9f3);

    font-family: "Segoe UI", Arial, sans-serif;

}



/* główna karta */

.box {

    width: calc(100% - 40px);

    max-width: 350px;

    background: white;

    padding: 35px 30px;

    border-radius: 25px;

    text-align: center;

    box-shadow:
        0 15px 40px rgba(0,0,0,0.15);

}



/* ikona */

.icon {

    font-size: 55px;

    line-height: 1;

    margin-bottom: 15px;

}



/* tytuł */

.box h2 {

    margin: 0 0 20px;

    font-size: 24px;

    color: #333;

}



/* opis */

.info {

    font-size: 16px;

    color: #666;

    margin: 0 0 25px;

    line-height: 1.4;

}



/* PIN */

input {

    width: 100%;

    height: 55px;

    border-radius: 12px;

    border: 1px solid #ddd;

    font-size: 24px;

    text-align: center;

    letter-spacing: 8px;

    outline: none;

    margin-bottom: 20px;

    background: #fafafa;

}



input:focus {

    border-color: #2ecc71;

    background: #fff;

    box-shadow:
        0 0 8px rgba(46,204,113,.3);

}



/* przycisk */

button {

    width: 100%;

    height: 65px;

    border: none;

    border-radius: 15px;

    background: #2ecc71;

    color: white;

    font-size: 21px;

    font-weight: 700;

    cursor: pointer;

    transition: .2s;

}



button:hover {

    background: #27ae60;

}



button:active {

    transform: scale(.97);

}



button:disabled {

    opacity: .6;

    cursor: not-allowed;

}



/* komunikat */

#status {

    margin-top: 25px;

    min-height: 25px;

    font-size: 18px;

    font-weight: 600;

    color: #333;

}



/* telefony z małym ekranem */

@media(max-width:380px) {


    body {

        padding-top: 15px;

    }


    .box {

        padding: 30px 20px;

        border-radius: 22px;

    }


    .icon {

        font-size: 45px;

        margin-bottom: 10px;

    }


    .box h2 {

        font-size: 22px;

        margin-bottom: 15px;

    }


    .info {

        font-size: 15px;

        margin-bottom: 20px;

    }


    button {

        height: 60px;

        font-size: 19px;

    }

}