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

html{
    scroll-behavior:smooth;
}

body{
    font-family:'Poppins',sans-serif;
    color:#222;
    line-height:1.5;
    font-size:14px;
    overflow-x:hidden;
    background:#111;
}

body::before{
    content:"";
    position:fixed;
    inset:0;
    background:
    linear-gradient(rgba(0,0,0,.45),rgba(0,0,0,.45)),
    url("../assets/images/background.webp");
    background-size:cover;
    background-position:center;
    background-repeat:no-repeat;
    filter:blur(2px);
    transform:scale(1.1);
    z-index:-2;
}

.page-section{
    max-width:900px;
    margin:auto;
    padding:45px 18px;
}

.page-section h1{
    text-align:center;
    color:#fff;
    font-size:1.8rem;
    margin-bottom:8px;
}

.page-section h1::after{
    content:"";
    display:block;
    width:55px;
    height:2px;
    background:#a546c2;
    margin:8px auto;
}

.page-section>p{
    color:#fff;
    text-align:center;
    max-width:650px;
    margin:0 auto 20px;
    font-size:.85rem;
}

.page-section h2{
    color:#fff;
    text-align:center;
    font-size:1.2rem;
    margin:20px 0 12px;
}

.page-section h3{
    font-size:.95rem;
    margin:12px 0 5px;
}

.page-card{
    background:rgba(255,255,255,.88);
    backdrop-filter:blur(12px);
    border-radius:0;
    padding:15px;
    margin-bottom:15px;
    box-shadow:0 6px 18px rgba(0,0,0,.12);
}

.page-card p{
    color:#444;
    font-size:.85rem;
    margin-bottom:10px;
}

.page-card ul{
    padding-left:18px;
}

.page-card li{
    color:#444;
    font-size:.85rem;
    margin-bottom:4px;
}

.accordion-section{
    margin-bottom:12px;
}

.accordion-section summary{
    list-style:none;
    cursor:pointer;
    padding:11px 15px;
    background:rgba(255,255,255,.9);
    border-radius:8px;
    color:#7c3aed;
    font-size:.85rem;
    font-weight:600;
    position:relative;
}

.accordion-section summary::-webkit-details-marker{
    display:none;
}

.accordion-section summary::after{
    content:"+";
    position:absolute;
    right:15px;
    font-size:18px;
}

.accordion-section[open] summary::after{
    content:"−";
}

.accordion-section[open] summary{
    background:#7c3aed;
    color:#fff;
    border-radius:8px 8px 0 0;
}

.accordion-section .page-card{
    margin:0;
    border-radius:0 0 8px 8px;
}

.page-card img{
    width:75%;
    display:block;
    margin:10px auto;
    border-radius:0;
    cursor:pointer;
    transition:.25s;
}

.page-card img:hover{
    transform:scale(1.01);
}

.side-by-side-images{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:10px;
}

.image-box{
    text-align:center;
}

.image-box p{
    font-size:11px;
    color:var(--muted-text);
}

iframe{
    width:100%;
    height:400px;
    border-radius:0;
    border:1px solid #ccc;
    margin:10px 0;
}

#activate3DButton{
    border:0;
    background:#111;
    color:#fff;
    padding:10px 20px;
    border-radius:999px;
    font-family:'Poppins';
    cursor:pointer;
    font-size:12px;
}

#activate3DButton:hover{
    background:#b246c2;
}

.image-modal{
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.9);
    display:flex;
    justify-content:center;
    align-items:center;
    z-index:9999;
    padding:15px;
}

.image-modal img{
    max-width:95%;
    max-height:90vh;
    border-radius:0;
}

.floating-back-btn{
    position:fixed;
    top:15px;
    right:15px;
    left:auto;
    padding:7px 16px;
    background:#ffffff;
    color:#000000;
    border-radius:999px;
    font-size:14px;
    z-index:1000;
    transition:.25s;
}

.floating-back-btn:hover{
    transform:translateY(-2px);
    background:#a146c2;
}

a{
    text-decoration:none;
    color:inherit;
}

footer{
    height:35px;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    background:rgba(0,0,0,.35);
    backdrop-filter:blur(12px);
    font-size:12px;
}

.project-accordion summary{

    display:flex;
    align-items:center;
    gap:10px;

}


.project-tag{

    background:#7c3aed;
    color:white;

    padding:3px 9px;

    border-radius:999px;

    font-size:10px;
    font-weight:600;

}


.project-viewer{

    background:rgba(255,255,255,.92);

    padding:18px;

    border-radius:0 0 10px 10px;

    box-shadow:0 5px 15px rgba(0,0,0,.12);

}


.project-viewer p{

    color:#444;
    font-size:.85rem;
    margin-bottom:12px;

}

.ppt-container{

    width:1200px;

    height:650px;

    overflow-x:auto;
    overflow-y:hidden;

    scroll-behavior:smooth;

}


.ppt-container iframe{

    width:1200px;

    height:650px;

    border:0;

}

.project-slider{

    position:relative;

    width:100%;

}


.slider-header{

    text-align:right;

    font-size:12px;

    color:#555;

    margin-bottom:5px;

}


.slide-container{

    display:flex;

    justify-content:center;

    align-items:center;

}


.project-slide{

    width:75%;

    display:none;

    border-radius:0;

    cursor:pointer;

}


.project-slide.active{

    display:block;

}


.slide-arrow{

    position:absolute;

    top:50%;

    transform:translateY(-50%);

    width:35px;

    height:35px;

    border:none;

    border-radius:50%;

    background:#111;

    color:white;

    font-size:25px;

    cursor:pointer;

    z-index:5;

}


.slide-arrow:hover{

    background:#a546c2;

}


.slide-arrow.left{

    left:10px;

}


.slide-arrow.right{

    right:10px;

}

@media(max-width:768px){

.page-section{
    padding:65px 12px;
}

.page-section h1{
    font-size:1.45rem;
}

.page-section h2{
    font-size:1.05rem;
}

.page-card{
    padding:12px;
}

.page-card p,
.page-card li{
    font-size:.8rem;
}

.side-by-side-images{
    grid-template-columns:1fr;
}

iframe{
    height:280px;
}

.floating-back-btn{
    padding:6px 14px;
}

.project-viewer{
    padding:12px;
}

.project-viewer p{
    font-size:.8rem;
    margin-bottom:10px;
}

.project-slider{
    width:100%;
    overflow:hidden;
}

.slider-header{
    text-align:center;
    font-size:12px;
    margin-bottom:10px;
}

.slide-container{
    width:100%;
    display:flex;
    justify-content:center;
    align-items:center;
    overflow:hidden;
}

.project-slide{
    display:none;
    width:100%;
    max-width:100%;
    height:auto;
    border-radius:0;
    object-fit:contain;
}

.project-slide.active{
    display:block;
}

.slide-arrow{
    width:34px;
    height:34px;
    font-size:22px;
    top:50%;
}

.slide-arrow.left{
    left:5px;
}

.slide-arrow.right{
    right:5px;
}

.project-tag{
    font-size:9px;
    padding:3px 8px;
}

.project-accordion summary{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    align-items:center;
    font-size:.8rem;
    line-height:1.4;
}

.ppt-container{
    width:100%;
    height:420px;
    overflow-x:auto;
}

.ppt-container iframe{
    width:100%;
    min-width:100%;
    height:420px;
}

}