/* Arah desain dan alasan tiap keputusan ada di DESIGN.md */
:root{
  --bg:#090c13; --surface:#111725; --line:#232c41;
  --text:#e8ebf3; --soft:#c9d0de; --muted:#96a1b8;
  --accent:#5eead4; --on-accent:#04201c;
  --font:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:ui-monospace,"Cascadia Mono",Consolas,monospace;
  --r:8px; --w:1120px; --pad:1.25rem;
  color-scheme:dark;
}
:root[data-theme="light"]{
  --bg:#f5f6f8; --surface:#ffffff; --line:#d5dae3;
  --text:#131722; --soft:#2b3140; --muted:#4f5869;
  --accent:#0f766e; --on-accent:#ffffff;
  color-scheme:light;
}

/* ---------- dasar ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-padding-top:4.5rem;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:400 1rem/1.65 var(--font)}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure{margin:0;padding:0}
ul,ol{list-style:none}
img{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
a{color:var(--accent);text-underline-offset:.18em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{width:min(var(--w),100% - 2*var(--pad));margin-inline:auto}

/* dua bahasa: yang tidak aktif disembunyikan */
html[lang="id"] [lang="en"],html[lang="en"] [lang="id"]{display:none!important}

.skip{position:absolute;left:-999px}
.skip:focus{left:1rem;top:1rem;z-index:99;padding:.5rem .9rem;border-radius:var(--r);background:var(--text);color:var(--bg)}

h1{font-size:clamp(2.6rem,6.4vw,4.5rem);font-weight:800;line-height:1.05;letter-spacing:-.03em}
h2{margin-bottom:1.8rem;font-size:clamp(1.6rem,3.4vw,2.2rem);font-weight:800;line-height:1.15;letter-spacing:-.02em}
h3{font-size:1.2rem;font-weight:700;line-height:1.3}
h4{font-size:1.05rem;font-weight:700;line-height:1.3}
.sub{margin:3.5rem 0 1rem}
.meta,.when{color:var(--muted);font-size:.92rem}
.when{font-variant-numeric:tabular-nums}
.lead{max-width:58ch;color:var(--muted);font-size:1.05rem}

/* aksen dipakai di tiga tempat saja: tautan, satu tombol utama per layar, dan kotak deteksi */
.btn{display:inline-flex;align-items:center;min-height:44px;padding:.6rem 1.2rem;border-radius:var(--r);background:var(--accent);color:var(--on-accent);font-weight:700;text-decoration:none}
.btn:hover{background:var(--text);color:var(--bg)}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.4rem;margin-top:1.7rem;font-weight:600}
.actions a:not(.btn){display:inline-flex;align-items:center;min-height:44px}

/* ---------- kepala halaman ---------- */
.top{display:contents}
.mast{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem 1rem;padding:.7rem var(--pad)}
.brand{color:var(--text);font-size:1.05rem;font-weight:800;text-decoration:none}
.tools{display:flex;gap:.5rem}
.seg{display:flex;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.seg button{min-width:2.75rem;min-height:44px;padding:.2rem .7rem;border:0;background:none;color:var(--muted);font-size:.82rem;font-weight:600;cursor:pointer}
.seg button+button{border-left:1px solid var(--line)}
.seg button:hover{color:var(--text)}
.seg button[aria-pressed="true"]{background:var(--text);color:var(--bg)}
.bar{position:sticky;top:0;z-index:10;display:flex;gap:1.4rem;padding-inline:var(--pad);border-block:1px solid var(--line);background:var(--bg);overflow-x:auto;scrollbar-width:none}
.bar::-webkit-scrollbar{display:none}
.bar a{display:flex;align-items:center;min-height:44px;color:var(--muted);font-size:.92rem;font-weight:500;text-decoration:none;white-space:nowrap}
.bar a:hover{color:var(--text)}
.bar a:last-child{color:var(--accent);font-weight:700}
/* wadah ini memotong isinya, jadi cincin fokus digambar ke dalam */
.bar a:focus-visible,.seg button:focus-visible{outline-offset:-3px}

/* ---------- sampul ---------- */
.hero{padding-top:clamp(2.5rem,6vw,5rem)}
.hero-in{display:grid;gap:2.5rem;align-items:center}
.tagline{margin-top:.9rem;font-size:clamp(1.25rem,2.6vw,1.7rem);font-weight:600;line-height:1.3}
.hero .lead{margin-top:1rem}
/* foto di dalam kotak deteksi berlabel: motif dari pekerjaan deteksi objek, muncul sekali */
.detect{position:relative;justify-self:start;width:min(70%,15rem);margin-top:1.4rem;aspect-ratio:4/5;border:2px solid var(--accent);background:var(--surface)}
.detect img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:top}
.detect-label{position:absolute;left:-2px;bottom:100%;padding:.15rem .5rem;background:var(--accent);color:var(--on-accent);font:500 .76rem/1.5 var(--mono);white-space:nowrap}
.stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.5rem var(--pad);margin-top:clamp(2.5rem,6vw,4rem)}
.stats>div,.metrics>div{padding-top:.8rem;border-top:1px solid var(--line)}
.stats dt{font-size:clamp(1.45rem,3.2vw,2.1rem);font-weight:800;line-height:1.1;letter-spacing:-.02em}
.stats dd,.metrics dd{margin-top:.35rem;color:var(--muted);font-size:.87rem;line-height:1.45}

/* ---------- bagian ---------- */
main>section:not(.hero){margin-top:clamp(3.5rem,8vw,6rem)}
main>section:not(.hero)>.wrap{padding-top:clamp(2rem,4vw,3rem);border-top:1px solid var(--line)}
.about,.edu{display:grid;gap:2rem}
.prose{display:flex;flex-direction:column;gap:1rem;color:var(--soft);font-size:1.05rem}

/* baris berlabel: pengganti kartu dan chip */
.rows>div{display:grid;gap:.1rem 1.25rem;padding:.75rem 0;border-top:1px solid var(--line)}
.rows dt{color:var(--muted);font-size:.86rem;font-weight:600;line-height:1.9}

/* ---------- proyek ---------- */
.case{display:grid;gap:1.8rem}
.case+.case{margin-top:3.5rem;padding-top:3rem;border-top:1px solid var(--line)}
.case-text{display:flex;flex-direction:column;gap:1.1rem}
.case h3{font-size:clamp(1.4rem,2.4vw,1.75rem);font-weight:800;letter-spacing:-.02em;line-height:1.2}
.case-text>p:not(.meta),.decode{color:var(--soft)}
.case-text>.meta{margin-top:-.7rem}
.pts{display:grid;gap:.5rem;padding-left:1.1rem;list-style:square;color:var(--soft);font-size:.97rem}
.pts li::marker{color:var(--muted)}

.gallery{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:.6rem}
.gallery button,.thumbs button,.phone,.cert{padding:0;border:0;background:none;text-align:left;cursor:zoom-in}
.gallery button{grid-column:span 2;aspect-ratio:4/3;overflow:hidden;border-radius:var(--r);background:var(--surface)}
.gallery button:first-child{grid-column:1/-1;aspect-ratio:16/10}
.gallery button:nth-child(n+5){grid-column:span 3;aspect-ratio:16/10}
.gallery img,.thumbs img{width:100%;height:100%;object-fit:cover}
.gallery button:hover,.thumbs button:hover,.phone:hover,.cert:hover img{outline:2px solid var(--accent);outline-offset:2px}

.thesis-media{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:1rem;align-items:center;max-width:28rem}
.phone{display:block;overflow:hidden;border:1px solid var(--line);border-radius:var(--r)}
.thumbs{display:grid;gap:.6rem}
.thumbs button{position:relative;aspect-ratio:4/3;overflow:hidden;border-radius:var(--r);background:var(--surface)}
.thumbs button>span{position:absolute;left:.4rem;bottom:.4rem;padding:.1rem .45rem;border-radius:4px;background:var(--bg);color:var(--text);font-size:.72rem;font-weight:600}
/* warna gelang adalah datanya; nama warna dan artinya ditulis di sebelahnya */
.decode{font-size:.95rem}
.sw{display:inline-block;width:.75em;height:.75em;margin:0 .35em 0 .25em;border:1px solid var(--line);background:var(--c)}
.metrics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.1rem var(--pad)}
.metrics dt{font-size:1.45rem;font-weight:800;line-height:1.1;letter-spacing:-.01em}
.steps{display:grid;gap:.6rem;color:var(--soft);font-size:.96rem;counter-reset:s}
.steps li{position:relative;padding-left:1.9rem;counter-increment:s}
.steps li::before{content:counter(s) ".";position:absolute;left:0;color:var(--muted);font-weight:600;font-variant-numeric:tabular-nums}
.steps b{color:var(--text)}

/* daftar berbaris: proyek lain dan pengalaman */
.list li{display:grid;gap:.5rem 1.5rem;padding:1.2rem 0;border-top:1px solid var(--line)}
.list .meta{margin-top:.2rem}
.list li>div:last-child>p{color:var(--soft)}
.list li>div:last-child>p+p{margin-top:.5rem}
.xp li>div>p:last-child{max-width:72ch;margin-top:.5rem}

/* ---------- pendidikan & sertifikasi ---------- */
.gpa{display:flex;align-items:baseline;gap:.7rem;margin-top:1rem;color:var(--muted);font-size:.9rem}
.gpa b{color:var(--text);font-size:2.2rem;font-weight:800;line-height:1}
.certs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.4rem 1rem}
.cert img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:top;border:1px solid var(--line);border-radius:var(--r);background:#fff}
.cert b{display:block;margin-top:.6rem;font-size:.95rem;font-weight:700;line-height:1.3}
.cert small,.certlist small{display:block;color:var(--muted);font-size:.82rem}
details{margin-top:1.8rem;border-block:1px solid var(--line)}
summary{display:flex;align-items:center;gap:.5rem;min-height:44px;color:var(--accent);font-weight:600;cursor:pointer}
summary::before{content:"+";font-size:1.2rem;line-height:1}
details[open] summary::before{content:"-"}
summary::-webkit-details-marker{display:none}
.certlist{padding-bottom:1rem;color:var(--soft);font-size:.93rem}
.certlist li{padding:.35rem 0;break-inside:avoid}

/* ---------- footer & lightbox ---------- */
footer{margin-top:clamp(3.5rem,8vw,6rem);border-top:1px solid var(--line)}
.foot{display:flex;justify-content:space-between;align-items:center;gap:1rem;min-height:4rem;color:var(--muted);font-size:.88rem}
.foot a{display:inline-flex;align-items:center;min-height:44px}
dialog{max-width:min(96vw,1400px);max-height:96vh;padding:0;border:0;background:none;overflow:visible}
dialog::backdrop{background:rgba(4,6,10,.92)}
dialog form{display:flex;justify-content:flex-end;margin-bottom:.6rem}
dialog img{max-width:100%;max-height:84vh;margin-inline:auto;border-radius:var(--r);background:#fff}
.close{min-height:44px;padding:.4rem 1.1rem;border:1px solid #e8ebf3;border-radius:var(--r);background:none;color:#e8ebf3;font-weight:600;cursor:pointer}
.close:hover{background:#e8ebf3;color:#090c13}

/* ---------- layar lebih lebar ---------- */
@media (min-width:640px){
  .rows>div{grid-template-columns:9rem minmax(0,1fr)}
  .rows.wide>div{grid-template-columns:13rem minmax(0,1fr)}
  .stats{grid-template-columns:repeat(4,minmax(0,1fr))}
  .certs{grid-template-columns:repeat(3,minmax(0,1fr))}
  .certlist{columns:2;column-gap:2.5rem}
}
@media (min-width:1000px){
  :root{--pad:2rem}
  /* satu bilah: nama, menu, lalu pengaturan */
  .top{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:1.5rem;min-height:4rem;padding-inline:max(var(--pad),calc((100% - var(--w))/2));border-bottom:1px solid var(--line);background:var(--bg)}
  .mast{display:contents}
  .brand{order:1}
  .bar{order:2;position:static;gap:1.5rem;margin-left:auto;padding:0;border:0;overflow:visible}
  .bar a{min-height:2.75rem}
  .tools{order:3}
  .seg button{min-height:2.1rem}

  .hero-in{grid-template-columns:1.3fr .8fr;gap:4rem}
  .detect{justify-self:center;width:min(100%,21rem);margin-top:0}
  .about{grid-template-columns:1.45fr 1fr;gap:3rem}
  .facts>div{grid-template-columns:minmax(0,1fr)}
  .case{grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
  .case.flip>:first-child{order:2}
  .list li{grid-template-columns:minmax(0,1fr) minmax(0,1.6fr)}
  .xp li{grid-template-columns:11rem minmax(0,1fr)}
  .edu{grid-template-columns:1fr 1.6fr;gap:3rem}
}