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

body{
    background:linear-gradient(135deg,#bee728,hsl(27,100%,51%));
    min-height:100vh;
    font-family:'Kufam',sans-serif;
}

/* البطاقة الرئيسية */
.background_bp5{
    background:rgba(255,255,255,0.35);
    backdrop-filter:blur(8px);
    width:90%;
    max-width:1200px;
    margin:40px auto;
    padding:30px;
    border-radius:25px;
    box-shadow:0 10px 30px rgba(0,0,0,0.2);
    text-align:center;
}

/* العنوان */
.h1{
    color:#ff0000;
    font-size:40px;
    line-height:1.5;
    text-shadow:
        2px 2px 4px rgba(0,0,0,0.3),
        0 0 10px rgba(255,255,255,0.4);
    margin-bottom:40px;
}

/* صورة الكتاب */
.book{
    width:300px;
    max-width:80%;
    display:block;
    margin:0 auto;
    cursor:pointer;
    transition:all 0.4s ease;
    filter:drop-shadow(0 10px 20px rgba(0,0,0,0.3));
}

.book:hover{
    transform:translateY(-10px) scale(1.05);
    filter:drop-shadow(0 15px 25px rgba(0,0,0,0.4));
}

/* نافذة الدفتر */
#popup00{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    height:100%;
    background:rgba(0,0,0,0.7);
    display:none;
    justify-content:center;
    align-items:center;
    z-index:1000;
}

/* محتوى الدفتر */
.popup-content00{
    width:90%;
    max-width:800px;
    height:85%;
    background:linear-gradient(
        135deg,
        #fff8dc,
        #f5deb3,
        #e6c27a
    );
    border-radius:20px;
    padding:20px;
    display:flex;
    flex-direction:column;
    box-shadow:0 15px 35px rgba(0,0,0,0.3);
}

.popup-content00 h2{
    text-align:center;
    margin-bottom:15px;
    color:#5a3b00;
}

/* منطقة الكتابة */
textarea{
    flex:1;
    width:100%;
    border:none;
    outline:none;
    resize:none;
    font-size:18px;
    line-height:35px;
    padding:15px;
    border-radius:10px;
    background:repeating-linear-gradient(
        to bottom,
        #fffef8,
        #fffef8 33px,
        #dcdcdc 34px
    );
}

/* الحاوية */
.buttons00{
    margin-top:15px;
    text-align:center;
}

/* زر الإغلاق */
#close00{
    background:#00c853;
    color:white;
    border:none;
    border-radius:12px;
    padding:12px 35px;
    font-size:18px;
    cursor:pointer;
    transition:0.3s;
}

#close00:hover{
    background:#00a844;
    transform:scale(1.05);
}

/* الهواتف */
@media (max-width:768px){

    .background_bp5{
        width:95%;
        padding:20px;
        margin:20px auto;
    }

    .h1{
        font-size:28px;
        line-height:1.6;
    }

    .book{
        width:200px;
    }

    .popup-content00{
        width:95%;
        height:90%;
        padding:15px;
    }

    textarea{
        font-size:16px;
        line-height:30px;
    }

    #close00{
        width:100%;
        max-width:200px;
    }
}