body {
    background-color: #0e192c;
    height: 100vh;
    margin-top: -30px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #ffffff;
    min-width: 320px;
    padding: 0 10px;
    overflow: hidden;
}

#glowny-kontener {
    display: flex;
    flex-direction: column;
    align-items: center;

    padding: 30px;
    background-color: #1e3256;
    border-radius: 20px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.7);
    border: 2px solid #6fa8ff;
}

#przycisk-oblicz {
    margin-top: 30px;
    padding: 0.8rem 1.5rem;
    background-color: #4a78c1;
    color: #0e192c;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: bold;
    transition: background-color 0.2s, transform 0.1s;
    min-height: 48px;

}

#przycisk-oblicz:hover {
    background-color: #6fa8ff;
}

#przycisk-oblicz:active {
    transform: scale(0.98);
}

#zegar-box {
    padding: 15px 30px;
    background-color: transparent;
    border-radius: 10px;
    box-shadow: none;
    font-size: 8vw;
    font-weight: 300;
    text-align: center;
    border: none;
    color: #e0f2f1;
}

#sen-box {
    margin-top: 0;
    width: 90%;
    padding: 1.5rem 2rem;
    background-color: #28416d;
    border-radius: 10px;
    box-shadow: none;
    text-align: center;

    overflow: hidden;
    transition: max-height 0.5s ease-in-out, opacity 0.4s ease-in-out, margin-top 0.5s ease-in-out;

    max-height: 0;
    opacity: 0;
}

.pokaz-sen {
    max-height: 500px !important;
    opacity: 1 !important;
    margin-top: 30px !important;
}

#sen-box h3 {
    color: #87ceeb;
    margin-top: 0;
    font-size: 1.2em;
}

#sen-box ul {
    list-style-type: none;
    padding: 0;
    margin: 15px 0;
    font-size: 1.5em;
    font-weight: 500;
}

#sen-box ul li {
    padding: 5px 0;
    color: #c9e2f9;
}

#sen-box ul li .sugerowane-tekst {
    font-weight: normal;
    color: #b0c4de;
    font-size: 0.8em;
}

#sen-box .zasniecie, #sen-box .wskazowka {
    font-size: 0.8em;
    color: #92a4bf;
}



.strzalka-wroc {
    position: absolute;
    top: 25px;
    left: 25px;
    z-index: 1000;

    font-size: 1.8em;
    font-weight: 900;
    text-decoration: none;
    color: #4A4A4A;

    background-color: #FFFFFF;
    border: 1px solid #DDDDDD;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    justify-content: center;
    align-items: center;

    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.strzalka-wroc:hover {
    color: #007bff;
    border-color: #007bff;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    #glowny-kontener {
        padding: 20px;
        border-radius: 15px;
    }

    #przycisk-oblicz {
        width: 100%;
        font-size: 1em;
        padding: 10px;
    }

    #sen-box {
        width: 95%;
        padding: 15px;
    }

    #zegar-box {
        font-size: 12vw;
    }

    .strzalka-wroc {
        top: 15px;
        left: 15px;
        width: 40px;
        height: 40px;
        font-size: 1.5em;
    }
}