:root{
    --primary:#2563eb;
    --dark:#0f172a;
    --light:#f8fafc;
    --gray:#64748b;
    --card:#ffffff;
    --shadow:0 10px 30px rgba(0,0,0,.08);
}

.dark-mode{
    --primary:#38bdf8;
    --dark:#f8fafc;
    --light:#0f172a;
    --gray:#94a3b8;
    --card:#1e293b;
    --shadow:0 10px 30px rgba(0,0,0,.4);
}

*{
    margin:0;
    padding:0;
    box-sizing:border-box;
    font-family:'Poppins',sans-serif;
    scroll-behavior:smooth;
}

body{
    background:var(--light);
    color:var(--dark);
    transition:.3s;
}

/* ================= NAVBAR ================= */

.header{
    position:fixed;
    top:0;
    left:0;
    width:100%;
    z-index:999;
    transition:.3s;
}

.nav-container{
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:18px 0;
}

.logo{
    font-size:22px;
    font-weight:700;
    color:white;
}

.nav-menu{
    display:flex;
    list-style:none;
    gap:25px;
}

.nav-menu a{
    color:white;
    text-decoration:none;
    font-weight:500;
    transition:.3s;
}

.nav-menu a:hover{
    color:#38bdf8;
}

.dark-btn{
    background:white;
    border:none;
    padding:10px 12px;
    border-radius:50%;
    cursor:pointer;
}

/* navbar saat scroll */
.header.scrolled{
    background:rgba(15,23,42,.95);
    backdrop-filter:blur(10px);
    box-shadow:var(--shadow);
}

/* ================= CONTAINER ================= */

.container{
    width:90%;
    max-width:1200px;
    margin:auto;
}

section{
    padding:90px 0;
}

.section-title{
    text-align:center;
    margin-bottom:50px;
}

.section-title h2{
    font-size:38px;
    font-weight:700;
}

.section-title p{
    color:var(--gray);
    margin-top:10px;
}

/* ================= HERO ================= */

.hero{
    min-height:100vh;
    display:flex;
    align-items:center;
    background:linear-gradient(rgba(15,23,42,.85),rgba(15,23,42,.85)),
    url("https://images.unsplash.com/photo-1522202176988-66273c2fd55f");
    background-size:cover;
    background-position:center;
    color:white;
}

.hero-content{
    display:grid;
    grid-template-columns:1fr 350px;
    align-items:center;
    gap:50px;
}

.hero-text h1{
    font-size:55px;
    margin:10px 0;
}

.hero-text h2{
    color:#38bdf8;
}

.hero-text p{
    color:#cbd5e1;
    margin:20px 0;
    line-height:1.7;
}

.hero-image img{
    width:320px;
    height:320px;
    border-radius:50%;
    object-fit:cover;
    border:6px solid rgba(255,255,255,.2);
    box-shadow:0 0 40px rgba(56,189,248,.4);
}

.hero-button{
    display:flex;
    gap:15px;
    flex-wrap:wrap;
}

.btn-primary{
    background:var(--primary);
    color:white;
    padding:12px 25px;
    border-radius:30px;
    text-decoration:none;
    font-weight:600;
    display:inline-block;
}

.btn-secondary{
    background:white;
    color:#0f172a;
    padding:12px 25px;
    border-radius:30px;
    text-decoration:none;
    font-weight:600;
}

/* ================= STATS ================= */

.stats{
    margin-top:-60px;
}

.stats-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
}

.stat-card{
    background:var(--card);
    padding:30px;
    border-radius:20px;
    text-align:center;
    box-shadow:var(--shadow);
}

.stat-card h3{
    font-size:40px;
    color:var(--primary);
}

/* ================= ABOUT ================= */

.about{
    background:var(--card);
}

.about-grid{
    display:grid;
    grid-template-columns:350px 1fr;
    gap:40px;
    align-items:center;
}

.about-image img{
    width:100%;
    border-radius:20px;
    box-shadow:var(--shadow);
}

.about-content p{
    color:var(--gray);
    line-height:1.8;
}

.about-info{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:15px;
    margin-top:25px;
}

.info-box{
    background:var(--light);
    padding:15px;
    border-radius:12px;
}

/* ================= TIMELINE ================= */

.timeline-container{
    position:relative;
}

.timeline-container::before{
    content:"";
    position:absolute;
    width:4px;
    height:100%;
    background:var(--primary);
    left:50%;
    transform:translateX(-50%);
}

.timeline-item{
    width:50%;
    padding:20px 40px;
}

.timeline-item:nth-child(odd){
    text-align:right;
}

.timeline-item:nth-child(even){
    margin-left:50%;
}

.timeline-content{
    background:var(--card);
    padding:20px;
    border-radius:15px;
    box-shadow:var(--shadow);
}

/* ================= SKILLS ================= */

.skill-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
    gap:20px;
}

.skill-card{
    background:var(--card);
    padding:25px;
    border-radius:15px;
    text-align:center;
    box-shadow:var(--shadow);
    transition:.3s;
}

.skill-card:hover{
    transform:translateY(-10px);
}

.skill-card i{
    font-size:35px;
    color:var(--primary);
    margin-bottom:10px;
}

/* ================= PROJECT ================= */

.project-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
    gap:25px;
}

.project-card{
    background:var(--card);
    border-radius:15px;
    overflow:hidden;
    box-shadow:var(--shadow);
    transition:.3s;
}

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

.project-card img{
    width:100%;
    height:200px;
    object-fit:cover;
}

.project-content{
    padding:20px;
}

.project-content h3{
    color:var(--primary);
}

.btn-link{
    display:inline-block;
    padding:10px 15px;
    background:#2563eb;
    color:white;
    text-decoration:none;
    border-radius:10px;
    font-size:14px;
    transition:.3s;
}

.btn-link:hover{
    background:#1e40af;
    transform:translateY(-3px);
}
/* ================= CERTIFICATE ================= */

.certificate-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:20px;
}

.certificate-card{
    background:var(--card);
    padding:25px;
    border-radius:15px;
    text-align:center;
    box-shadow:var(--shadow);
}

.certificate-card i{
    font-size:40px;
    color:var(--primary);
    margin-bottom:10px;
}

/* ================= GALLERY ================= */

.gallery-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
    gap:15px;
}

.gallery-grid img{
    width:100%;
    height:180px;
    object-fit:cover;
    border-radius:10px;
    transition:.3s;
}

.gallery-grid img:hover{
    transform:scale(1.05);
}

/* ================= CONTACT ================= */

.contact-wrapper{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:40px;
}

.contact-item{
    display:flex;
    gap:15px;
    margin-bottom:20px;
}

.contact-item i{
    font-size:20px;
    color:var(--primary);
}

.contact-form{
    display:flex;
    flex-direction:column;
    gap:15px;
}

.contact-form input,
.contact-form textarea{
    padding:12px;
    border-radius:10px;
    border:1px solid #ccc;
}

/* ================= WHATSAPP FLOAT ================= */

.wa-float{
    position:fixed;
    bottom:20px;
    right:20px;
    background:#25D366;
    color:white;
    width:55px;
    height:55px;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:28px;
    box-shadow:var(--shadow);
}

/* ================= FOOTER ================= */

.footer{
    background:var(--dark);
    color:white;
    text-align:center;
    padding:40px 0;
}

.social a{
    color:white;
    margin:0 10px;
    font-size:18px;
}

/* ================= RESPONSIVE ================= */

@media(max-width:768px){

.hero-content{
    grid-template-columns:1fr;
    text-align:center;
}

.stats-grid{
    grid-template-columns:repeat(2,1fr);
}

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

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

.nav-menu{
    display:none;
}

}
/* ================= TABLET ================= */

@media (max-width: 992px){

    .hero-content{
        grid-template-columns:1fr;
        text-align:center;
    }

    .hero-image img{
        width:280px;
        height:280px;
    }

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

    .timeline-container::before{
        left:20px;
    }

    .timeline-item{
        width:100%;
        margin-left:0 !important;
        padding-left:60px;
        padding-right:10px;
        text-align:left !important;
    }

}

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

@media (max-width:768px){

    .container{
        width:95%;
    }

    .nav-container{
        flex-wrap:wrap;
        gap:15px;
    }

    .logo{
        font-size:18px;
    }

    .nav-menu{
        display:none;
    }

    .hero{
        padding-top:100px;
    }

    .hero-text h1{
        font-size:32px;
        line-height:1.3;
    }

    .hero-text h2{
        font-size:20px;
    }

    .hero-text p{
        font-size:14px;
    }

    .hero-image img{
        width:220px;
        height:220px;
    }

    .hero-button{
        justify-content:center;
    }

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

    .about-info{
        grid-template-columns:1fr;
    }

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

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

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

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

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

    .section-title h2{
        font-size:28px;
    }

}

/* ================= HP KECIL ================= */

@media (max-width:480px){

    section{
        padding:70px 0;
    }

    .hero-text h1{
        font-size:26px;
    }

    .hero-text h2{
        font-size:18px;
    }

    .hero-image img{
        width:180px;
        height:180px;
    }

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

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

    .btn-primary,
    .btn-secondary{
        width:100%;
        text-align:center;
    }

    .contact-form input,
    .contact-form textarea{
        width:100%;
    }

}