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

body {
    font-family: 'Poppins', sans-serif;
    color: #111;
    overflow-x: hidden;
    min-height: 100vh;

    background:
        radial-gradient(
            circle at top,
            #f2f2f0 0%,
            #ddddda 40%,
            #d4d4d1 100%
        );

    position: relative;
}
.about-section,
.projects-section,
.certificates-section,
.contact-grid-section,
.contact-cta{
    background:#f7f7f7 !important;
}

/* Texture tissue */
body::before {
    content: "";
    position: fixed;
    inset: 0;

    pointer-events: none;

    opacity: .04;

    background-image:
        repeating-radial-gradient(
            circle at center,
            rgba(0, 0, 0, .08) 0,
            rgba(0, 0, 0, .08) 1px,
            transparent 2px,
            transparent 6px
        );

    z-index: 0;
}

.navbar,
.hero {
    position: relative;
    z-index: 1;
}

/* NAVBAR */

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 15px 7%;
}

.logo{
    text-decoration: none;
    color: inherit;
    display: inline-block;
}
.navbar ul {
    display: flex;
    gap: 50px;
    list-style: none;
}

.navbar a {
    text-decoration: none;
    color: #111;
}

/*js*/

.navbar {

    position: sticky;

    top: 0;

    z-index: 999;

    transition: .3s;
}

.navbar.scrolled {

    background: rgba(255, 255, 255, .7);

    backdrop-filter: blur(12px);

    box-shadow:
        0 10px 30px rgba(0, 0, 0, .05);
}

.mobile-social{
    display:none;
}

.social-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.social-links a {
    color: #111;
    font-size: 28px;

    transition: .3s ease;
}

.social-links a:hover {
    transform: translateY(-4px);
    opacity: .7;
}

.nav-links{
    display:flex;
    gap:50px;
    list-style:none;
}

.nav-links a{
    text-decoration:none;
    color:#111;
    font-weight:500;
    position:relative;
    transition:.3s ease;
}

.nav-links a::after{
    content:'';
    position:absolute;
    left:0;
    bottom:-8px;
    width:0;
    height:2px;
    background:#111;
    transition:.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after{
    width:100%;
}

.nav-links a:hover{
    opacity:.7;
}

.logo{
    display:flex;
    align-items:center;
    height:auto;
}

.logo img{
    width:65px;
    height:auto;
    display:block;
}

.logo img:hover {
    opacity: .8;
}

.hamburger{

    display:none;

    flex-direction:column;

    gap:5px;

    cursor:pointer;
}

.hamburger span{

    width:28px;

    height:3px;

    background:#111;

    border-radius:20px;

    transition:.3s;
}

/* =====================================
   MOBILE
===================================== */

@media (max-width:768px){

    /* NAVBAR */

    .navbar{
        display:flex;
        justify-content:space-between;
        align-items:center;
        padding:15px 20px;
        position:relative;
    }

    .logo img{
        width:60px;
        height:auto;
    }

    /* HAMBURGER */

    .hamburger{
        display:flex;
        flex-direction:column;
        gap:5px;
        cursor:pointer;
        z-index:1001;
    }

    .hamburger span{
        width:28px;
        height:3px;
        background:#111;
        border-radius:20px;
    }

    /* MENU */

    .nav-links{
        position:absolute;
        top:100%;
        left:0;
        width:100%;
        background:#ececea;

        display:flex;
        flex-direction:column;
        align-items:center;

        gap:25px;
        padding:30px 0;

        transform:translateY(-150%);
        opacity:0;
        visibility:hidden;

        transition:.4s ease;
        z-index:999;
    }

    .nav-links.active{
        transform:translateY(0);
        opacity:1;
        visibility:visible;
    }

    .social-links{
        display:none;
    }

    .mobile-social{
        display:flex !important;
        justify-content:center;
        align-items:center;
        gap:30px;
        margin-top:25px;
        padding-top:25px;
        border-top:1px solid rgba(0,0,0,.1);
        width:100%;
    }

    .mobile-social a{
        font-size:28px;
        color:#111;
    }

    .certificates-section{
       padding:80px 0 0 !important;
    }

    .section-tag{
        text-align: center;
        display: block;
        margin-bottom: 15px;
    }

    .cert-title{
        margin: 0 auto 40px;
        text-align: center;
        line-height: .9;
    }

    .cert-title span{
        font-size: 2.4rem !important;
    }

    .cert-track{
           height:420px !important;
    }

    .cert-card{
        width: 85vw !important;
        max-width: 320px;
    }

    /* hanya tampil kartu aktif */
    .cert-card.left,
    .cert-card.right,
    .cert-card.far-left,
    .cert-card.far-right{
        opacity: 0;
        pointer-events: none;
    }

    .cert-card.active{
        transform:
            translateX(-50%)
            scale(1);
    }

    .cert-card img{
        border-radius: 20px;
    }

    .caption{
        display: block;
        font-size: 18px;
        margin-top: 15px;
        text-align: center;
    }
    /* FOOTER */
    .footer{
        padding: 70px 20px 25px !important;
        margin-top: -60px !important;
    }

    .footer-content{
        display: flex !important;
        flex-direction: column;
        justify-content: center !important;
        align-items: center !important;

        gap: 15px;
        text-align: center !important;

        min-height: auto !important;
        max-width: none !important;
    }

    .footer-content p{
        width: 100%;
        margin: 0;
        text-align: center;

        font-size: 14px;
    }

    .footer-links{
        display: none !important;
    }

    .back-top{
        width: 55px;
        height: 55px;

        top: -22px;

        font-size: 18px;
    }

    /* CERTIFICATES */
    .certificates-section{
        padding: 110px 0 0;
    }

    .cert-title span{
        font-size: 2.8rem !important;
    }

    .cert-track{
           height:420px !important;
    }

    .cert-card{
        width: 280px !important;
    }

    .caption{
        margin-top: 15px;

        font-size: 20px;
    }

    /* CONTACT */
    .explore-btn{
        display: none !important;
    }

    .contact-hero{
        padding: 110px 0 50px;

        text-align: center;
    }

    .contact-hero h1{
        font-size: 2.8rem;
    }

    .contact-grid{
        grid-template-columns: 1fr;
    }

    .contact-card{
        padding: 25px;
    }

    .contact-cta{
        padding: 70px 0;
    }


body::before{
    display: none !important;
}

.certificates-section{
     background:#f7f7f7 !important; 
}
}

 
/*ini aja*/

.cert-title{
    text-align:center;
    margin:20px auto 70px;
}

.cert-title span{
    display:inline-block;
    font-size:clamp(3rem,7vw,6rem);
    font-weight:800;
}

.title-top{
    transform:rotate(-2deg);
}

.title-bottom{
    transform:rotate(2deg);

    margin-left:20px;
}
/* =========================
   FOOTER
========================= */
.footer{
    position:relative;
    padding:10px 7%;
    margin-top:-55px; /* sesuaikan */
    background:#ececea;
    border-top:1px solid rgba(0,0,0,.08);
}
.back-top{

    position:absolute;

    top:-38px;

    left:50%;

    transform:translateX(-50%);

    width:76px;

    height:76px;

    border-radius:50%;

    background:#ececea;

    border:1px solid rgba(0,0,0,.12);

    display:flex;

    align-items:center;

    justify-content:center;

    text-decoration:none;

    color:#b0b0b0;

    font-size:24px;

    transition:.3s;

    box-shadow:
    0 8px 20px rgba(0,0,0,.05);
}

.back-top:hover{

    transform:translateX(-50%) translateY(-5px);

    color:#111;
}

.footer-content{
    max-width:1400px;

    margin:auto;

    display:flex;

    justify-content:space-between;

    align-items:center;

    min-height:40px;
}

.footer-content p{

    color:#8a8a8a;

    font-size:18px;

    margin:0;
}

.footer-links{

    display:flex;

    gap:45px;
}

.footer-links a{

    text-decoration:none;

    color:#8a8a8a;

    font-size:18px;

    transition:.3s;
}

.footer-links a:hover{

    color:#111;
}

/* important*/
.container{
    width:min(1400px,90%);
    margin:auto;
}

.contact-hero{
    padding:140px 0 80px;
}

.section-tag{
    display:block;
    font-size:12px;
    letter-spacing:3px;
    color:#777;
    margin-bottom:20px;
}

.contact-hero h1{
    font-size:clamp(4rem,5vw,5.5rem);
    line-height:.95;
    margin-bottom:25px;
    color:#111;
}

.contact-hero p{
    max-width:700px;
    color:#666;
    line-height:1.9;
}

.contact-grid-section{
    padding-bottom:100px;
}

.contact-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:25px;
}

.contact-card{
    background:rgba(255,255,255,.35);
    backdrop-filter:blur(10px);

    border:1px solid rgba(0,0,0,.06);

    border-radius:30px;

    padding:35px;

    text-decoration:none;

    transition:.3s ease;
}

.contact-card:hover{
    transform:translateY(-8px);
}

.contact-card span{
    font-size:12px;
    letter-spacing:2px;
    color:#888;
}

.contact-card h3{
    margin:15px 0 10px;
    font-size:24px;
    font-weight:500;
    color:#444;
}

.contact-card p{
    color:#777;
}

.contact-cta{
    text-align:center;
    padding:100px 0;
}

.contact-cta h2{
    font-size:clamp(2.5rem,5vw,5rem);
    line-height:1;
    margin-bottom:20px;
}

.contact-cta p{
    max-width:650px;
    margin:auto;
    color:#666;
    line-height:1.8;
}


/* =========================
   CERTIFICATES
========================= */

.certificates-section{
   padding:50px 0 20px;
    overflow:hidden;
}

.container{
    width:min(1400px,90%);
    margin:auto;
}

.section-tag{
    font-size:13px;
    letter-spacing:3px;
    color:#666;
}

.certificates-section h1{
    font-size: 2rem;
    line-height: 1.1;
    font-weight: 600;
    text-align: center;
    margin: 10px auto 25px;
}

.cert-slider{
    position:relative;
}

.cert-track{
    position:relative;

    width:100%;
     height:450px;
}

.cert-card{
    position:absolute;

    left:50%;
    top:0;

    width:480px !important;
       transition:
        transform 2.8s cubic-bezier(.22,1,.36,1),
        opacity 2.8s ease;
    cursor:pointer;
}

.cert-card img{
    width:100%;

    border-radius:24px;

    display:block;

    box-shadow:
        0 15px 35px rgba(0,0,0,.08);
}

.caption{
    display:none;

    text-align:center;

    margin-top:18px;

    font-size:22px;

    font-weight:600;
}

/* ACTIVE */

.cert-card.active{

    transform:
        translateX(-50%)
        scale(1);

    z-index:5;

    opacity:1;
}

.cert-card.active .caption{
    display:block;
}

/* LEFT */

.cert-card.left{

    transform:
        translateX(-115%)
        scale(.72);

    opacity:.55;

    z-index:3;
}

/* RIGHT */

.cert-card.right{

    transform:
        translateX(15%)
        scale(.72);

    opacity:.55;

    z-index:3;
}

/* FAR LEFT */

.cert-card.far-left{

    transform:
        translateX(-165%)
        scale(.55);

    opacity:.25;

    z-index:1;
}

/* FAR RIGHT */

.cert-card.far-right{

    transform:
        translateX(65%)
        scale(.55);

    opacity:.25;

    z-index:1;
}
.cert-slider{

    cursor:grab;

    touch-action:none;
}

.cert-slider:active{

    cursor:grabbing;
}
/* BUTTONS */

.cert-btn{

    position:absolute;

    top:220px;

    width:70px;
    height:70px;

    border:none;

    border-radius:50%;

    background:#fff;

    cursor:pointer;

    font-size:24px;

    box-shadow:
        0 10px 30px rgba(0,0,0,.08);

    z-index:20;

    transition:.3s;
}

.cert-btn:hover{

    transform:scale(1.08);
}

.prev{
    left:0;
}

.next{
    right:0;
}

.cert-track{
    cursor: grab;
    user-select: none;
}

.cert-track:active{
    cursor: grabbing;
}   

.cert-slider{
    cursor: grab;
    touch-action: pan-y;
}

.cert-slider:active{
    cursor: grabbing;
}
/* MOBILE */
/* MOBILE */