@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;700&display=swap');

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-decoration: none;
    border: none;
    outline: none;
    font-family: "Poppins", sans-serif;
    }

    :root {
    --bg-color: #1f242d;
    --second-bg-color: #323946;
    --main-color: #7cf03d;
    --white-color: #fff;
    --disabled-color: #fff3;
    }

    html {
        font-size: 62.5%;
        }
        
        body {
        color: var(--white-color);
        }
       
        header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        padding: 2rem 9%;
        background: var(--bg-color);
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 100;
        visibility: hidden;
        opacity: 0;
       }

       header.active {
        animation: show-header 1.5s linear forwards;
        animation-delay: 1.2s;
        }
        @keyframes show-header {
        100% {
        visibility: visible;
        opacity: 1;
        }
        }

       .logo {
        font-size: 3rem;
        color: var(--white-color);
        font-weight: 700;
        }

        nav a {
        font-size: 2rem;
        color: var(--white-color);
        font-weight: 500;
        margin-left: 3.5rem;
        transition: .5s;
        }

        nav a:hover, 
        nav a:active{
        color: var(--main-color);
        }

        #menu-icon {
            font-size: 4rem;
            display: none;
            }

            .bars-box {
                position: absolute;
                width: 100%;
                height: 100%;
                display: flex;
                }

                .bars-box .bar {
                    width: 100%;
                    height: 100%;
                    background: var(--bg-color);
                    animation: hide-bars 0.5s ease-in-out both;
                        animation-delay: calc(0.1s * var(--i));
                    }

                    @keyframes hide-bars {
                        0% {
                            transform: translateY(0);
                        }
                        100% {
                            transform: translateY(-100%);
                        }
                    }

                    .bars-box.active .bar {
                        animation: show-bars 0.5s ease-in-out both;
                        animation-delay: calc(0.1s * var(--i)); /* 0.1s * i মানে প্রতিটি বার আলাদাভাবে নির্দিষ্ট হবে */
                    }
                    
                    @keyframes show-bars {
                        0% {
                            transform: translateY(-100%);
                        }
                        100% {
                            transform: translateY(0);
                        }
                    }
                    
              

            section {
                position: absolute;
                width: 100%;
                height: 100%;
                padding: 10rem 9% 2rem;

                visibility: hidden;
                opacity: 0;
                overflow: hidden;
                }

                section.active {
                    animation: show-content 1.5s linear forwards;
                    animation-delay: 1.6s;
                   }
                   
                   @keyframes show-content {
                    100% {
                    visibility: visible;
                    opacity: 1;
                    overflow: auto;
                    }
                   }


 .home {
 display: flex;
 align-items: center;
 gap: 5rem;
}

.home-detail h1 {
    font-size: clamp(3.5rem, 10vw, 5.5rem);
    }

    .home-detail h2 {
    display: inline-block;
    font-size: 3.2rem;
    margin-top: -1rem;
    }

    .home-detail h2 span {
        position: relative;
        display: inline-block;
        color: transparent;
        -webkit-text-stroke: .07rem var(--main-color);
        animation: display-text 16s linear infinite;
        animation-delay: calc(-4s * var(--i));
        }

        @keyframes display-text {
            25%,
            100% {
            display: none;
            }
            }

        .home-detail h2 span::before {
        content: attr(data-text);
        position: absolute;
        width: 0;
        border-right: .2rem solid var(--main-color);
        color: var(--main-color);
        white-space: nowrap;
        overflow: hidden;
        animation: fill-text 4s linear infinite;
        }


        @keyframes fill-text {
            10%,100% {
            width: 0;
            }
            70%,90% {
            width: 100%;
            }
            }

    .home-detail p {
    font-size: 1.6rem;
    margin: 1rem 0 2.5rem;
    }

    .home-detail .btn-sci {
    display: flex;
    align-items: center;
    }
    
    .btn {
        display: inline-block;
        padding: 1rem 3rem;
        background: var(--main-color);
        border: .2rem solid var(--main-color);
        border-radius: 4rem;
        box-shadow: 0 0 1rem var(--main-color);
        font-size: 1.6rem;
        color: var(--bg-color);
        font-weight: 500;
        transition: .5s;
        }
      
      .btn:hover {
        background: transparent;
        color: var(--main-color);
        box-shadow: none;
        }

.home-detail .btn-sci .btn{
    margin-right: 2rem;
}

.home-detail .btn-sci .sci a {
    display: inline-flex;
    padding: .8rem;
    border: 0.2rem solid var(--main-color);
    border-radius: 50%;
    font-size: 2rem;
    color: var(--main-color);
    margin: 0 .8rem;
    transition: .5s;
}

.home-detail .btn-sci .sci a:hover {
    background: var(--main-color);
    color: var(--bg-color);
    box-shadow: 0 0 1rem var(--main-color);
}

.home-img .img-box {
    position: relative;
    width: 32vw;
    height: 32vw;
    border-radius: 50%;
    padding: .5rem;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.home-img .img-box::before,
.home-img .img-box::after {
    content: '';
    position: absolute;
    width: 50rem;
    height: 50rem;
    background: conic-gradient(transparent, transparent, transparent, var(--main-color));
    transform: rotate(0deg);
    animation: rotate-border 10s linear infinite;
}

.home-img .img-box::after {
    animation-delay: -5s;
}

@keyframes rotate-border {
    100% {
        transform: rotate(360deg);
    }
}


.home-img .img-box .img-item {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg-color);
    border-radius: 50%;
    border: .01rem solid var(--bg-color);
    display: flex;
    justify-content: center;
    z-index: 1;
    overflow: hidden;
}

.home-img .img-box .img-item img {
    position: absolute;
    top: 3rem;
    display: block;
    width: 85%;
    object-fit: cover;
    mix-blend-mode: lighten;
}
/* Service*/
.heading {
    font-size: 4.5rem;
    text-align: center;
    margin-bottom: 2rem;
    }

    .heading span {
    color: var(--main-color);
    }

    .services-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 2rem;
    }

    .services-container .services-box {
        padding: 3rem 2.5rem;
        background: var(--second-bg-color);
        border: .2rem solid var(--second-bg-color);
        border-radius: 1rem;
        transition: .5s;
        }

        .services-container .services-box:hover {
            border-color: var(--main-color);
            transform: scale(1.02);
            }

        .services-box .icon {
        display: flex;
        justify-content: space-between;
        align-items: center;
        }

        .services-box .icon i {
        font-size: 4.5rem;
        transition: .5s;
        } 


        .services-box:hover .icon:not(a i) {
            color: var(--main-color);
            }
            

        .services-box .icon a {
            display: inline-flex;
            background: var(--white-color);
            border-radius: 50%;
            padding: 1rem;
            transition: .5s;
            }

            .services-box:hover .icon a {
                background: var(--main-color);
                }
                
            .services-box .icon a i {
            font-size: 3rem;
            color: var(--bg-color);
            transform: rotate(225deg);
            }
           
            .services-box h3 {
                font-size: 3rem;
                margin: .5rem 0 2rem;
                transition: .5s;
                }

.services-box .icon a:hover{
    transform: rotate(180deg);
}

                .services-box:hover h3 {
                    color: var(--main-color)
                    }

                .services-box p {
                font-size: 1.6rem;
                }
 /* Resume*/
 .resume-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 5rem;
    }

    .resume-box h2 {
        font-size: 4.5rem;
        }
        .resume-box p {
        font-size: 1.6rem;
        }
        .resume-box .desc{
        margin: 2rem 0 2.5rem;
        }

        .resume-box .resume-btn {
            width: 100%;
            height: 5.3rem;
            background: var(--second-bg-color);
            border: .2rem solid var(--second-bg-color);
            font-size: 1.6rem;
            color: var(--white-color);
            font-weight: 500;
            margin-bottom: 2rem;
            border-radius: .8rem;
            cursor: pointer;
           }
           
           .resume-box .resume-btn.active {
            border-color: var(--main-color); /* কেবল অ্যাকটিভ হলে বর্ডার দেখাবে */
            color: var(--main-color);
        }
        
.resume-detail {
    display: none;
}

.resume-detail.active {
display: block;
}

.resume-box .heading {
    font-size: 3.5rem;
    text-align: left;
}

.resume-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 2rem;
    height: 45rem;
    overflow: auto;
    }

    .resume-list .resume-item {
        background: var(--second-bg-color);
        border-radius: .8rem;
        padding: 3rem 2.5rem;
        height: calc((45rem - 2rem) / 2);
        display: flex;
        flex-direction: column;
        justify-content: center;
        }
        
        .resume-item .year {
        color: var(--main-color);
        }

        .resume-item h3 {
            font-size: 2.2rem;
            }
            .resume-item .company {
            position: relative;
            margin-left: 2rem;
            margin-bottom: 2rem;
            }
            .resume-item .company::before {
            content: "";
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            padding: .5rem;
            background: var(--main-color);
            border-radius: 50%;
            margin-left: -2rem;
            }
            
            .resume-list::-webkit-scrollbar {
                width: .7rem;
                }
                .resume-list::-webkit-scrollbar-thumb {
                background: transparent;
                border-radius: 1rem;
                }
                .resume-list:hover::-webkit-scrollbar-thumb {
                background: var(--main-color);
                }

                .resume-detail.skills .resume-list {
                    grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
                    height: auto;
                    overflow: visible;
                    }
                    .resume-detail.skills .resume-item {
                    position: relative;
                    align-items: center;
                    height: auto;
                    }
                    .resume-detail.skills .resume-item i {
                    font-size: 8.5rem;
                    transition: .5s;
                    }
                    .resume-detail.skills .resume-item:hover i {
                    color: var(--main-color);
                    }

                    .resume-detail.skills .resume-item span {
                        position: absolute;
                        top: -20%;
                        background: var(--white-color);
                        color: var(--bg-color);
                        font-size: 1.6rem;
                        padding: .5rem 1rem;
                        border-radius: .6rem;
                        pointer-events: none;
                        opacity: 0;
                        transform: scale(.9);
                        transition: .2s;
                        }
                        .resume-detail.skills .resume-item:hover span {
                        top: -25%;
                        opacity: 1;
                        transform: scale(1);
                        }

                        .resume-detail.about .resume-list {
                            height: auto;
                            grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
                            }
                            .resume-detail.about .resume-item {
                            height: auto;
                            padding: 0 0.5rem;
                            background: transparent;
                            }
                            .resume-detail.about .resume-item p {
                            color: var(--main-color);
                            }
                            .resume-detail.about .resume-item p span {
                            color: var(--white-color);
                            margin-left: 1rem;
                            font-size: 1.8rem;
                            }

.portfolio-container {
display: grid;
 grid-template-columns: repeat(2, 1fr);
 gap: 3rem;
}

.portfolio-detail {
 display: none;
}

.portfolio-detail.active {
 display: block;
}

.portfolio-box .numb {
 font-size: 8rem;
 -webkit-text-stroke: .07rem var(--white-color);
 color: transparent;
 line-height: 1;
}


.portfolio-box h3 {
    font-size: 3.5rem;
    margin: .8rem 0 2rem;
 }
    .portfolio-box p {
    font-size: 1.6rem;
    }
    .portfolio-box .tech {
        margin: 2rem 0;
        color: var(--main-color); /* ঠিকঠাক কাজ করবে */
        border-bottom: .1rem solid var(--white-color);
        padding-bottom: 2rem;
    }

    .portfolio-box .live-github a {
        position: relative;
        display: inline-flex;
        padding: 1.3rem;
        font-size: 3rem;
        color: var(--white-color);
        border-radius: 50%;
        background: var(--second-bg-color);
        transition: .5s;
    }
    
.portfolio-box .live-github a:hover {
    color: var(--main-color);
}

    .portfolio-box .live-github a:first-child {
        margin-right: 1.5rem;
    }
    
    .portfolio-box .live-github a:first-child i {
        transform: rotate(135deg);
    }
    .portfolio-box .live-github a span {
        position: absolute;
        top: -60%;
        left: 50%;
        transform: translateX(-50%) scale(.9);
        font-size: 1.6rem;
        white-space: nowrap;
        padding: .5rem 1rem;
        border-radius: .6rem;
        pointer-events: none;
        background: var(--white-color);
        color: var(--bg-color);
        opacity: 0;
        transition: .2s;
    }
    
    .portfolio-box .live-github a:hover span {
        top: -70%;
        scale: 1;
        opacity: 1;
        transform: translateX(-50%);
    }
    
    .portfolio-box .portfolio-carousel {
        width: 100%;
        height: 45rem;
        border-radius: 1rem;
        overflow: hidden;
    }
    
    .portfolio-box .portfolio-carousel .img-slide {
        display: grid;
        grid-auto-flow: column;
        grid-auto-columns: 100%;
        gap: 2rem;
        height: inherit;
        transition: .5s;
    }
    
    .portfolio-box .portfolio-carousel .img-item {
        height: inherit;
    }
    
    .portfolio-box .portfolio-carousel .img-item img {
        display: block;
        width: 100%;
        height: 100%;
        object-fit: cover;
        border-radius: 1rem;
    }
    
    .portfolio-box .navigation {
        text-align: right;
        margin-top: 2rem;
    }
    
    .portfolio-box .navigation button {
        display: inline-flex;
        padding: .4rem;
        background: var(--second-bg-color);
        border: .2rem solid var(--main-color);
        border-radius: .6rem;
        font-size: 4rem;
        color: var(--main-color);
        cursor: pointer;
    }

    .portfolio-box .navigation button.disabled {
        border-color: var(--second-bg-color);
        color: var(--disabled-color);
        pointer-events: none;  /* Optionally prevent click events */
    }
    
    
    .portfolio-box .navigation .arrow-right {
        margin-left: 1.5rem;
    }
    
    .contact-container {
        display: grid;
        grid-template-columns: 1fr 1.3fr;
        gap: 3rem;
    }
    
    .contact-container .contact-box:first-child {
        align-self: center;
    }
    
    .contact-box h2 {
        font-size: 4.5rem;
    }
    
    .contact-box p {
        font-size: 1.6rem;
    }
    
    .contact-box .desc {
        margin: 1.5rem 0 2.5rem;
    }
    
    .contact-box .contact-detail {
        display: flex;
        align-items: center;
        margin: 2rem 0;
    }
    
    .contact-detail i {
        display: inline-flex;
        background: var(--second-bg-color);
        color: var(--main-color);
        font-size: 3rem;
        padding: 1.2rem;
        border-radius: .6rem;
        margin-right: 1.5rem;
    }
    
    .contact-detail .detail p:first-child {
        color: var(--main-color);
    }

    .contact-box form {
        background: var(--second-bg-color);
        padding: 2.5rem 3.5rem 3.5rem;
        border-radius: 1rem;
        text-align: center;
        }
        .contact-box .heading {
        font-size: 3.5rem;
        }
        .contact-box .field-box {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
        }

.contact-box .field-box input,
.contact-box .field-box textarea {
padding: 1.5rem;
background: var(--bg-color);
border: .15rem solid var(--bg-color);
border-radius: .6rem;
font-size: 1.6rem;
color: var(--white-color);
}

.contact-box .field-box textarea {
    grid-column: 1 / -1;
    height: 26rem;
    resize: none;
    }
    .contact-box .field-box input:focus,
    .contact-box .field-box textarea:focus {
    border-color: var(--main-color);
    }

    .contact-box .btn {
        margin-top: 2rem;
        cursor: pointer;
    }

    nav a.active {
        color: var(--main-color); 

    }
    
/* breakpoints */
@media screen and (max-width: 1200px) {
    html {
    font-size: 55%;
    }
    }
    @media screen and (max-width: 992px) {
    header {
    padding: 2rem 4%;
    }
    section {
    padding: 10rem 4% 2rem;
    }
    }

    /* Breakpoints */
@media screen and (max-width: 1200px) {
    html {
        font-size: 55%;
    }
}

@media screen and (max-width: 992px) {
    header {
        padding: 2rem 4%;
    }
    section {
        padding: 10rem 4% 2rem;
    }
}

@media screen and (max-width: 810px) {
    .contact-box .field-box {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 768px) {
    #menu-icon {
        display: block;
    }

nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    padding: 1rem 0;
    background: var(--bg-color);
    border-top: 0.1rem solid rgba(0, 0, 0, 0.2);
    box-shadow: 0.5rem 1rem rgba(0, 0, 0, 0.2);
    text-align: center;
    display: none;
}

nav.active {
    display: block;
   }

   nav a {
    display: block;
    margin: 4rem 0;
    }
    .home {
    flex-direction: column-reverse;
    justify-content: center;
    gap: 2rem;
    }
    .home-img.img-box {
        width: 35rem;
        height: 35rem;
        }
        .resume-container,
        .portfolio-container,
        .contact-container {
        grid-template-columns: 1fr;
        }
        .resume-container {
        gap: 3rem;
        }
        .portfolio-container .portfolio-box:first-child { 
            order: 1; }
            .contact-box .field-box {
                grid-template-columns: repeat(2, 1fr);
               }
}

@media screen and (max-width: 600px) {
    .home-img.img-box {
    width: 30rem;
    height: 30rem;
    }
    .contact-box .field-box {
        grid-template-columns: 1fr;
       }
       @media screen and (max-width: 450px) {
        html {
        font-size: 50%;
        }
        }
        @media screen and (max-width: 400px) {
        .home-detail,
        .resume-box h2,
        .resume-box .heading,
        .resume-box .desc,
        .resume-detail .about .resume-item {
        text-align: center;
        }
        .home-detail .btn-sci {
        flex-direction: column-reverse;
        }
        .home-detail .btn-sci.sci {
            margin-left: 0;
            margin-bottom: 2rem;
            }
            .contact-box form {
                padding: 2.5rem 3rem 3.5rem;
                }
                .contact-box h2 {
                font-size: 3.5rem;
                }
    }

}

#particles-js {
  position: fixed;
  width: 100%;
  height: 100%;
  background-color: #0d0d0d; /* ব্যাকগ্রাউন্ড কালার */
  z-index: -1; /* যাতে সব কন্টেন্ট এর ওপর থাকে */
}


.main-content {
  position: relative;
  z-index: 1;
  color: white; /* dark background এর জন্য */
}

body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-family: Arial, sans-serif;
}

.content {
  position: relative;
  z-index: 1;
  color: black; /* Change to black for better contrast */
  padding: 50px;
}

canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none; /* Allow interaction with elements behind the canvas */
  z-index: -1; /* Keep canvas behind the content */
}