body {
    font-family: 'Roboto', sans-serif; /* Bu satırı ekle veya değiştir */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #e8e8e8;
    color: #333;
    margin: 0;
    padding: 20px;
}

.giris-ekrani {
    text-align: center;
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.giris-ekrani h2 {
    color: #4CAF50;
    margin-bottom: 10px;
}

.giris-ekrani input {
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    width: 250px;
    font-size: 1em;
}

.giris-ekrani button {
    padding: 12px 25px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    cursor: pointer;
    transition: background-color 0.3s;
}

.giris-ekrani button:hover {
    background-color: #45a049;
}

.oyun-kapsayici {
    background: #fff;
    padding: 30px 40px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.baslik-alani {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
}

h1 {
    color: #333;
    margin-bottom: 10px;
    text-align: center;
}

.bilgi-alani {
    display: flex;
    justify-content: center;
    gap: 50px;
    width: 100%;
}

.skor-alani, .zamanlayici-alani {
    font-size: 1.2em;
    color: #555;
}

.skor-alani span, .zamanlayici-alani span {
    font-weight: bold;
    color: #e94e77;
}

.oyun-alani {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.piyano {
    width: 350px;
    height: 150px;
    background-color: #333;
    border-radius: 10px;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: flex-end;
}

.piyano-tuslari {
    display: flex;
    width: 100%;
}

.beyaz-tus {
    width: 50px;
    height: 100px;
    background-color: white;
    border: 1px solid #ccc;
    border-bottom-left-radius: 5px;
    border-bottom-right-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
    z-index: 1;
    box-sizing: border-box;
}

.beyaz-tus.aktif {
    background-color: #ddd;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.2);
}

.siyah-tus {
    position: absolute;
    width: 25px;
    height: 60px;
    background-color: black;
    border: 1px solid #111;
    border-bottom-left-radius: 5px;
    border-bottom-right-radius: 5px;
    z-index: 2;
    top: 25px;
}

.siyah-sol-1 { left: 40px; }
.siyah-sol-2 { left: 90px; }
.siyah-sol-3 { left: 190px; }
.siyah-sol-4 { left: 240px; }
.siyah-sol-5 { left: 290px; }

.nota-tuslari {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap; 
    margin-top: 20px;
}

.yuvarlak-tus {
    background-color: #4CAF50;
    color: white;
    border: none;
    width: 60px;
    height: 60px;
    font-size: 1em;
    cursor: pointer;
    border-radius: 50%;
    transition: background-color 0.3s, transform 0.2s;
}

.yuvarlak-tus:hover {
    background-color: #45a049;
    transform: scale(1.05);
}

.yuvarlak-tus.dogru { background-color: #28a745; transform: scale(1.1); }
.yuvarlak-tus.yanlis { background-color: #dc3545; transform: scale(0.9); }

.mesaj {
    font-size: 1.5em;
    font-weight: bold;
    color: #e94e77;
    margin: 20px 0;
}

#tekrar-cal {
    background-color: #008CBA;
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 1em;
    cursor: pointer;
    border-radius: 5px;
    margin-top: 10px;
    transition: background-color 0.3s;
}

#tekrar-cal:hover {
    background-color: #007bb5;
}

.puan-tablosu-kapsayici {
    background: #fff;
    padding: 20px 30px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
    width: 300px;
    text-align: left;
}

.puan-tablosu-kapsayici h2 {
    color: #333;
    text-align: center;
    margin-top: 0;
}

#skor-listesi {
    padding: 0;
    list-style: none;
}

#skor-listesi li {
    background-color: #f0f0f0;
    padding: 10px;
    margin-bottom: 8px;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    font-weight: bold;
}

.skor-kaydet {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
    align-items: stretch;
}

#oyun-sonu-mesaj {
    font-size: 1.2em;
    font-weight: bold;
    color: #333;
    text-align: center;
}

#kullanici-adi {
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 8px;
    font-size: 1em;
}

#skor-kaydet-btn {
    padding: 12px;
    border: none;
    border-radius: 8px;
    background-color: #007bff;
    color: white;
    cursor: pointer;
    font-size: 1.1em;
    transition: background-color 0.3s;
}

#skor-kaydet-btn:hover {
    background-color: #0056b3;
}