/*RESET CSS START */
@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    scroll-behavior: smooth;
    font-family: "Poppins", sans-serif;
}
:root{
    --bg-color: #080808;  /*arkaplan renk*/
    --second-bg-color: #131313;
    --text-color: #fff;
    --main-color: #FF00FF;
    }
    html{
        font-size: 60%;
        overflow-x: hidden;
 }
 body{
    background-color: var(--bg-color);
    color: var(--text-color)
 }
 span{
    color: var(--main-color);
 }
 section{
    min-height: 100vh;
    padding: 10rem 12% 10rem;
 }
/*RESET CSS END */


/*HEADER CSS START*/
.header{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 4rem 12% 4rem;
    background-color: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 5;
}
.logo{
    font-size: 3rem;
    color: var(--text-color);
    font-weight: 800;
    cursor: pointer;
    transition: 0.3s ease-in-out;
}
.logo:hover {
    transform: scale(1.1);
}
.logo span {
    text-shadow: 0 0 25px var(--main-color);
    }
.navbar a{
    font-size: 1.8rem;
    color: var(--text-color);
    margin-left: 4rem;
    font-weight: 600;
    transition: 0.3s ease;
    border-bottom: 3px solid transparent;
}
.navbar a:hover,
.navbar a:active {
    color: var(--main-color);
    border-bottom: 3px solid var(--main-color);
}
#menu-icon{
    font-size: 3.6rem;
    color: var(--main-color);
    display: none;
}


/*HEADER CSS END */
/*HOME START*/
.home{
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15rem;
}
.home-content{
    display: flex;
    flex-direction: column;
    align-items: baseline;
    justify-content: center;
    text-align: left;
    margin-top: 3rem;
}
.home-content h1{
    font-size: 7rem;
    font-weight: 700;
    margin-top: 1.5rem;
    line-height: 1;
}
.home-content h3{
    margin-bottom: 1rem;
    margin-top: 1rem;
    font-size: 2rem;
}
.home-img{
    border border-radius: 50%;
}
.home-img img{
    width: 30vw;
    position: relative;
    top: 3rem;
    border-radius: 50%;
    box-shadow: 0 0 25px var(--main-color);
    cursor: pointer;
    transition: 0.4s ease-in-out;
    }
    .home-img img:hover{
        box-shadow: 0 0 25px var(--main-color), 0 0 50px var(--main-color), 0 0 100px var(--main-color);

    }
.home-content p{
    font-size: 1.5rem;
    font-weight: 500;
    line-height: 1.8;
    max-width: 1000px;
}
.social-icons a{
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 4.5rem;
    height: 4.5rem;
    background-color: transparent;
    border: 2px solid var(--main-color);
    font-size: 2.5rem;
    border-radius: 50%;
    color: var(--main-color);
    margin: 3rem 1.5rem 3rem 0;
    transition: 300ms ease-in-out;
}
.social-icons a:hover{
    color: var(--text-color);
    transform: scale(1.3) translate(-5px);
    box-shadow: 0 0 25px var(--main-color);
    background-color: var(--main-color);
    }
    .btn{
        display: inline-block;
        padding: 1rem 2.8rem;
        background-color: var(--main-color);
        box-shadow: 0 0 25px var(--main-color);
        border-radius: 4rem;
        font-size: 1.6rem;
        color: black;
        border: 2px solid transparent;
        letter-spacing: 0.1rem;
        font-weight: 600;
        cursor: pointer;
        transition: 300ms ease-in-out;
}
.btn:hover{
    transform: scale(1.05);
    box-shadow: 0 0 50px var(--main-color);
    }
    .btn-group{
        display: flex;
        align-items: center;
        gap: 1.5rem;
}
.btn-group a:nth-of-type(2) {
    background-color: black;
    color: var(--main-color);
    border: 2px solid var(--main-color);
    box-shadow: 0 0 25px transparent;
}
.btn-group a:nth-of-type(2):hover {
    box-shadow: 0 0 25px var(--main-color);
    background: var(--main-color);
    color: black;
}
.text-animation{
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 24px;
    font-weight: 600;
    min-width: 220px;
    }
    .text-animation span{
        position: relative;
        white-space: nowrap;
 }
 .text-animation span::before{
    content: "";
    color: var(--main-color);
    animation: words 10s infinite;
     }
     .text-animation span::after{
        content: "";
        background-color: var(--bg-color);
        height: 100%;
        width: calc(100% + 8px);
        position: absolute;
        right: -8px;
        border-left: 3px solid var(--bg-color);
        animation: cursor 0.6s infinite, typing 10s steps(33) infinite;
        }

@keyframes cursor{
    to{
        border-left: 2px solid var(--main-color);

    }
}
@keyframes words{
    0%, 50%{
        content: "Bilgisayar Mühendisliği öğrencisi"
    }
    51%, 100%{
        content: "Kendini geliştiren mühendis adayı"
    }
}
@keyframes typing{
    10%,40%,60%,90%{
        width: 0;
}
0%,50%,100%{
    width: calc(100% + 8px);
}
}
/*HOME END*/

/*ABOUT SECTİON START*/
.about{
    display:flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 10rem 9% 2rem;
    background-color: var(--bg-color);
}
.heading{
    text-align: center;
    font-size: 4.5rem;
    margin-bottom: 4rem;
    color: white;
}
.heading span{
    color: var(--main-color);
}
.about-container{
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}
.about-card{
    text-align: center;
    max-width: 850px;
    background: rgba(255, 255, 255, 0.03);
    padding: 3.5rem 2.5rem;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 20px rgba(255, 0, 255, 0.05);
    backdrop-filter: blur(10px);
    transition: 0.4s ease-in-out;
}
.about-card:hover{
    border-color: var(--main-color);
    box-shadow: 0 0 40px var(--main-color);
    transform: translateY(-5px);
}
.about-card p{
    font-size: 1.6rem;
    font-weight: 400;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: #cccccc;
}
/*ABOUT SECTİON END*/

/*PROJECTS START*/
.projects{
    background-color: var(--bg-color);
    min-height: 100vh;
    padding: 10rem 9% 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    }
.projects .heading{
    margin-bottom: 1.5rem;
}
    .projects-container{
        display: flex;
        justify-content: center;
        align-items: stretch;
        gap: 3rem;
        flex-wrap: wrap;
        overflow-x: auto;
        padding: 2rem;
        width: 100%;
        max-width: 1050px;
        scrollbar-width: thin;
        scrollbar-color: var(--main-color) var(--bg-color);
        margin: 0 auto;
        }
        .projects-container::-webkit-scrollbar{
            height: 8px;
        }
        .projects-container::-webkit-scrollbar-track{
            background: var(--bg-color);
            border-radius: 10px;
        }
        .projects-container::-webkit-scrollbar-thumb{
            background-color: var(--main-color);
            border-radius: 10px;
            border: 2px solid var(--bg-color);
        }
.project-card{
    flex: 1 1 350px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 4rem 3rem;
    max-width: 450px;
    width: 100%;
    text-align: center;
    box-shadow: 0 0 20px rgba(255, 0, 255, 0.03);
    backdrop-filter: blur(10px);
    transition: 0.4s ease-in-out;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 320px;
}
.project-card:hover{
    border-color: var(--main-color);
    box-shadow: 0 0 40px var(--main-color);
    transform: translateY(-10px);
}
.project-card h3{
    font-size: 2.4rem;
    color: white;
    margin-bottom: 2rem;
}
.tech-stack{
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}
.tech-stack span{
    display: inline-block;
    font-size: 1.3rem;
    color: var(--main-color);
    background-color: rgba(255, 0, 255, 0.1);
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    border: 1px solid var(--main-color);
}
.project-card p{
    font-size: 1.5rem;
    color: #cccccc;
    line-height: 1.8;
    margin-bottom: 3rem;
    flex-grow: 1;
}
section{
    scroll-margin-top: 1rem;
}

/*PROJECTS END*/
/*CONTACT START*/
.contact{
    background-color: var(--bg-color);
    min-height: 100vh;
    padding: 10 rem 9% 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.contact-container{
    width: 100%;
    max-width: 700px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 0, 255, 0.03);
    border-radius: 20px;
    padding: 5rem 4rem;
    box-shadow: 0 0 20px rgba(255, 0, 255, 0.03);
    backdrop-filter: blur(10px);
}
.contact-form{
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.contact-form .input-box{
    width: 100%;
}
.contact-form input, .contact-form textarea{
    width: 100%;
    padding: 1.8rem;
    font-size: 1.6rem;
    color: white;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid transparent;
    border-radius: 10px;
    outline: none;
    transition: 0.3s ease;
    font-family: inherit;
}
.contact-form input::placeholder,.contact-form textarea::placeholder{
    color: #a0a0a0;
}
.contact-form input:focus, .contact-form textarea:focus{
    border-color: var(--main-color);
    box-shadow: 0 0 15px rgba(255, 0, 255, 0.2);
    background: rgba(255, 255, 255, 0.08);
    }
.contact-form .btn{
     margin-top: 1rem;
     cursor: pointer;
     font-family: inherit;
     border: 2px solid var(--main-color);
}
/*CONTACT END*/
/*DARK WHITE MODE*/
#tema-butonu{
    background: transparent;
    border: 2px solid #FF00FF;
    color: #FF00FF;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 18px;
    margin-left: 20px;
    transition: 0.3s;
    }
#tema-butonu:hover{
    background: #FF00FF;
    color: #fff;
}
body.light-mode{
    background-color: #f4f4f4;
    color:#111
}
body.light-mode .contact-container input, body.light-mode .contact-container textarea{
    background-color: #fff;
    color: #333;
    border: 1px solid #ccc;
}
body.light-mode section,
body.light-mode .home,
body.light-mode .projects
body.light-mode .contact{
    background-color: #f4f4f4;
}
body.light-mode h1,
body.light-mode h2,
body.light-mode h3,
body.light-mode p,
body.light-mode .logo,
body.light-mode .navbar a {
    color: #111;
}
body.light-mode .navbar a:hover,
body.light-mode .navbar a.active{
    color: #FF00FF;
}
body.light-mode .heading span{
    color:#FF00FF
}
body.light-mode .text-animation span::before,
body.light-mode .text-animation span::after{
    background-color: #f4f4f4;
}
body.light-mode .navbar a.active{
    color: #111;
}
body.light-mode .navbar a:hover{
    color: #FF00FF;
}
body.light-mode .about-card,
body.light-mode .project-card {
    background-color: #ffffff;
    border: 1px solid rgba(255, 0, 255, 0.2);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}
body.light-mode .about-card:hover,
body.light-mode .project-card:hover{
    border: 1px solid #FF00FF;
    box-shadow: 0 8px 20px rgba(255, 0, 255, 0.2);
   transform: translateY(-5px);6
}
/*TELEFON İÇİN AYAR*/
@media (max-width: 768px) {
    html, body{
        overflow-x: hidden !important;
        width: 100% !important;
    }
    .home{
        flex-direction: column-reverse !important;
        text-align: center !important;
        padding: 120px 5% 50px 5% !important;
        justify-content: center !important;
    }
    .home-img img, .about-img img{
        width: 280px !important;
        max-width: 80vw !important;
        margin: 0 auto 30px auto !important;
        display: block !important;
    }
    .home-content h1{
        font-size: 2.5rem !important;
    }
    .contact {
        padding: 50px 5% !important;
        text-align: center !important;
     }
     .contact form{

        width: 100% !important;
        max-width: 400px !important;
        margin: 0 auto !important;
     }
     .contact form .input-box{
        display: flex !important;
        flex-direction: column !important;
     }
    .contact form .input-box input,
    .contact form textarea{
        width: 100% !important;
        margin-bottom: 15px !important;
    }
    
}