.sayfa_baslik{
    width: calc(100% - 20px);
    line-height: 1.3;
    float: left;
    position: relative;
    padding: 10px;
    letter-spacing: 1px;
    color:#2c2460;
    margin-bottom: 30px;
    text-align: center;
    font-size: 45px;
    text-transform: uppercase;
    font-family: 'font_ozel';
}

.referans{
    background-color: transparent;
    width: calc(20% - 40px);
    perspective: 1000px;
    margin:20px;
    float: left;
    position: relative;
}

.referans_cevir{
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 3.8s;
    transform-style: preserve-3d;
}

.referans:hover .referans_cevir{
    transform: rotateY(180deg);
}

.referans_logo, .referans_content{
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.referans_logo{ background-color: var(--body); }

.referans .referans_logo img{
    width: calc(100% - 10px);
    height: calc(100% - 10px);
    float: left;
    position: relative;
    object-fit: contain;
    margin:5px;
}

.referans_content{
    background-color: var(--color);
    color: white;
    transform: rotateY(180deg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}


.referans_content .ref_title{
    width: calc(100% - 20px);
    line-height: 1.4;
    float: left;
    position: relative;
    letter-spacing: 0.5px;
    text-align: center;
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: bold;
}

.referans_content .ref_des{
    width: calc(100% - 20px);
    line-height: 1.3;
    float: left;
    position: relative;
    letter-spacing: 0.5px;
    text-align: center;
    font-size: 14px;
}






.blog{
    width: calc(33.33% - 80px);
    float: left;
    position: relative;
    margin: 30px;
    padding: 10px;
    background: linear-gradient(301deg, #802e92, #2c2460, #802e92, #2c2460);
    background-size: 400% 400%;
    -webkit-animation: gradient_zemin 14s ease infinite;
    -moz-animation: gradient_zemin 14s ease infinite;
    -o-animation: gradient_zemin 14s ease infinite;
    animation: gradient_zemin 14s ease infinite;
    cursor: pointer;
    overflow: hidden;
}

.blog:before{
    content:'';
    width: calc(100% - 0px);
    height: calc(100% - 0px);
    float: left;
    position: absolute;
    background-color: #f1f1f1;
    top:0px;
    left:0px;
    transition: all 250ms;
}


.blog:hover:before{ 
    width: calc(100% - 10px);
    height: calc(100% - 10px);
    top:5px;
    left:5px;
}

.blog .blog_cover{
    content:'';
    width: calc(200px - 0px);
    height: calc(200px - 0px);
    float: left;
    position: absolute;
    bottom:-100%;
    left:-100%;
    transition: all 250ms;
    z-index: 20;
    transform: rotate(45deg);
    background: linear-gradient(301deg, #802e92, #2c2460, #802e92, #2c2460);
    background-size: 400% 400%;
    -webkit-animation: gradient_zemin 14s ease infinite;
    -moz-animation: gradient_zemin 14s ease infinite;
    -o-animation: gradient_zemin 14s ease infinite;
    animation: gradient_zemin 14s ease infinite;
}

.blog:hover .blog_cover{ 
    bottom:-100px;
    left:-100px;
}

.blog .blog_img{
    width: 100%;
    float: left;
    position: relative;
    object-fit: cover;
}

.blog .blog_title{
	width: calc(100% - 0px);
	line-height: 1.3;
	letter-spacing: 0.5px;
	font-size: 20px;
	font-weight: bold;
	float: left;
	position: relative;
	margin-top:10px;
	color:#3d3d3d;
}

.blog .blog_des{
	width: calc(100% - 0px);
	line-height: 1.5;
	letter-spacing: 1px;
	font-size: 14px;
	float: left;
	position: relative;
	margin-top:10px;
	color:#3d3d3d;
}


.blog .tarih{
    width: calc(100% - 80px);
    line-height: 1.5;
    float: right;
    position: relative;
    color:#802e92;
    letter-spacing: 1px;
    font-size: 14px;
    margin-top:10px;
    text-align: right;
}

.blog .incele{
    width: calc(70px - 0px);
    line-height: 1.5;
    float: left;
    position: absolute;
    color:#fff;
    letter-spacing: 1px;
    font-size: 14px;
    margin-top:10px;
    transition: all 250ms;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    transform: rotate(-45deg);
    left:43%;
    bottom: 70%;
}

.blog .incele:after{
    content: '';
    width: 10px;
    height: 10px;
    float: left;
    position: relative;
    mask: url(../images/o17.svg) no-repeat center / contain; 
    -webkit-mask: url(../images/o17.svg) no-repeat center / contain;
    background-color: #fff;
    margin-left: 10px;
}










.iletisim_form{
    width: 760px;
    float: left;
    position: relative;
    margin-top:100px;
    margin-bottom:100px;
    left:calc(50% - 380px);
}

.iletisim_input{
    width: 100%;
    float: left;
    position: relative;
    margin-bottom:30px;
}

.iletisim_input .input_title{
    width: calc(100% - 10px);
    line-height: 1.3;
    float: left;
    position: relative;
    color:#7d7d7d;
    padding-bottom: 3px;
    margin-left: 4px;
}

.iletisim_input input{
    width: calc(100% - 24px);
    height: 50px;
    padding: 0px 10px;
    float: left;
    position: relative;
    border:none;
    outline:none;
    background-color: #ddd;
    border:2px solid transparent;
}

.iletisim_input textarea{
    min-width: calc(100% - 24px);
    max-width: calc(100% - 24px);
    min-height: 80px;
    padding: 10px;
    float: left;
    position: relative;
    border:none;
    outline:none;
    background-color: #ddd;
    border:2px solid transparent;
}

.input_but{
    padding: 15px 30px;
    float: left;
    position: relative;
    border:none;
    outline:none;
    background-color: #802e92;
    color:#fff;
    cursor: pointer;
    user-select: none;
    -moz-user-select: none;
    -webkit-user-select: none;
}


.iletisim_input:focus-within .input_title{ color: #802e92; }
.iletisim_input:focus-within input{ border-color: #802e92; }
.iletisim_input:focus-within textarea{ border-color: #802e92; }










@media screen and (max-width: 1024px), screen and (max-device-width: 1024px) {

    .blog{
        width: calc(50% - 80px);
        margin: 30px;
        padding: 10px;
    }
    

    .referans{
        width: calc(25% - 16px);
        margin:8px;
        perspective: 1000px;
    }

    .referans .referans_logo img{
        width: calc(100% - 40px);
        height: calc(100% - 40px);
        margin:20px;
    }
    
}











@media screen and (max-width: 800px), screen and (max-device-width: 800px) {

    .iletisim_form{
        width: calc(100% - 0px);
        left:0px;
    }

}




@media screen and (max-width: 736px), screen and (max-device-width: 736px) {

    .blog{
        width: calc(50% - 60px);
        margin: 20px;
    }
   
    .referans{
        width: calc(33.33% - 16px);
        perspective: 1000px;
    }

 
    .referans_content .ref_title{
        width: calc(100% - 14px);
        line-height: 1.4;
        font-size: 15px;
    }
        
    .referans_content .ref_des{
        width: calc(100% - 14px);
    }

}









@media screen and (max-width: 640px), screen and (max-device-width: 640px) {

    .blog{
        width: calc(100% - 100px);
        margin: 40px;
    }

    .referans_content .ref_title{ font-size: 14px; }
    .referans_content .ref_des{ font-size: 13px; }
}














@media screen and (max-width: 480px), screen and (max-device-width: 480px) {
    
    .referans{
        width: calc(50% - 16px);
        perspective: 1000px;
    }

    .referans .referans_logo img{
        width: calc(100% - 60px);
        height: calc(100% - 60px);
        margin:30px;
    }
    
}




@media screen and (max-width: 420px), screen and (max-device-width: 420px) { 
    .blog{
        width: calc(100% - 20px);
        margin: 20px 10px;
    }


    .referans .referans_logo img{
        width: calc(100% - 40px);
        height: calc(100% - 40px);
        margin:20px;
    }

}