/* Website OXA — font disimpan sendiri (tidak memanggil server lain). */
@font-face {
  font-family: 'OXA Sans';
  src: url('../fonts/PlusJakartaSans-400.ttf') format('truetype');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'OXA Sans';
  src: url('../fonts/PlusJakartaSans-600.ttf') format('truetype');
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: 'OXA Sans';
  src: url('../fonts/PlusJakartaSans-800.ttf') format('truetype');
  font-weight: 800;
  font-display: swap;
}
@font-face {
  font-family: 'OXA Mono';
  src: url('../fonts/IBMPlexMono-400.ttf') format('truetype');
  font-weight: 400;
  font-display: swap;
}

:root {
  --malam: #070d16;
  --navy: #14202b;
  --oranye: #f5a524;
  --teks: #f3efe6;
  --redup: rgba(243, 239, 230, 0.72);
  --garis: rgba(243, 239, 230, 0.16);
  --kertas: rgba(9, 15, 24, 0.55);
  --kertas-terang: rgba(255, 252, 244, 0.08);
  --bayang: 0 24px 60px rgba(0, 0, 0, 0.35);
  --sans: 'OXA Sans', system-ui, sans-serif;
  --mono: 'OXA Mono', ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--malam);
  color: var(--teks);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
}

/* Dunia 3D di belakang semua isi. */
#dunia {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
}

/* Butiran film dan sudut gelap, seperti foto/lukisan lama. */
.butiran {
  position: fixed;
  inset: -50%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.16;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: butiran 0.6s steps(4) infinite;
}
.sudut {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(0, 0, 0, 0.45) 100%);
}
@keyframes butiran {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-3%, 2%); }
  50% { transform: translate(2%, -3%); }
  75% { transform: translate(-2%, -1%); }
  100% { transform: translate(1%, 3%); }
}

/* Menu atas. */
.atas {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px clamp(16px, 4vw, 44px);
}
.merek {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.merek img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.35);
}
.menu {
  display: flex;
  gap: 4px;
  padding: 5px;
  border-radius: 999px;
  background: rgba(7, 13, 22, 0.42);
  border: 1px solid var(--garis);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.menu a {
  text-decoration: none;
  font-family: var(--mono);
  font-size: 13px;
  padding: 7px 13px;
  border-radius: 999px;
  color: var(--redup);
  transition: background 0.3s, color 0.3s;
}
.menu a:hover,
.menu a.aktif {
  color: var(--malam);
  background: var(--teks);
}

main {
  position: relative;
  z-index: 2;
}

.layar {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 110px clamp(16px, 5vw, 72px) 70px;
}
.layar.kanan {
  justify-content: flex-end;
}
.layar.tengah {
  justify-content: center;
}

/* Bagian pembuka. */
.halo {
  align-items: flex-end;
  padding-bottom: 12vh;
}
.halo-isi {
  max-width: 640px;
}
.coretan {
  width: 170px;
  height: 70px;
  margin: 0 0 -6px 4px;
  overflow: visible;
}
.coretan path {
  fill: none;
  stroke: var(--teks);
  stroke-width: 3.4;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  animation: tulis 2.4s 0.6s ease forwards;
}
.coretan path.titik {
  stroke: var(--oranye);
  animation-delay: 2.6s;
}
@keyframes tulis {
  to { stroke-dashoffset: 0; }
}
.judul-besar {
  margin: 0;
  font-weight: 800;
  font-size: clamp(64px, 14vw, 168px);
  line-height: 0.9;
  letter-spacing: 0.06em;
  text-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}
.judul-besar .a {
  color: var(--oranye);
}
.tagline {
  margin: 18px 0 0;
  max-width: 520px;
  font-size: clamp(17px, 2.2vw, 21px);
  color: var(--redup);
}
.gulir {
  margin-top: 34px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--redup);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.gulir::after {
  content: '';
  width: 1px;
  height: 34px;
  background: linear-gradient(var(--teks), transparent);
  animation: turun 1.8s ease-in-out infinite;
}
@keyframes turun {
  0%, 100% { transform: translateY(-6px); opacity: 0.4; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* Lembaran kertas tempat isi tiap bagian. */
.kertas {
  width: min(470px, 100%);
  padding: 28px;
  border-radius: 24px;
  background: var(--kertas);
  border: 1px solid var(--garis);
  box-shadow: var(--bayang);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
}
/* Muncul pelan saat digulir (hanya kalau JavaScript berjalan). */
.js .kertas {
  opacity: 0;
  transform: translateY(40px) rotateX(8deg);
  transform-origin: bottom center;
  transition: opacity 0.9s ease, transform 1.1s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.js .kertas.tampil {
  opacity: 1;
  transform: none;
}
.label {
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--oranye);
  text-transform: uppercase;
}
.kertas h2 {
  margin: 8px 0 10px;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.12;
  font-weight: 800;
}
.kertas > p {
  margin: 0 0 18px;
  color: var(--redup);
}

/* Kartu karya, dengan kemiringan 3D mengikuti kursor. */
.daftar {
  display: grid;
  gap: 14px;
  perspective: 900px;
}
.karya {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 16px;
  align-items: center;
  padding: 14px;
  border-radius: 18px;
  text-decoration: none;
  background: var(--kertas-terang);
  border: 1px solid var(--garis);
  transition: transform 0.25s ease, background 0.3s, border-color 0.3s;
  transform-style: preserve-3d;
}
.karya:hover {
  background: rgba(255, 252, 244, 0.13);
  border-color: rgba(245, 165, 36, 0.55);
}
.karya img {
  width: 74px;
  height: 100px;
  object-fit: cover;
  object-position: top;
  border-radius: 12px;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.35);
  transform: translateZ(26px);
}
.karya h3 {
  margin: 0;
  font-size: 20px;
}
.karya .jenis {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--redup);
}
.karya p {
  margin: 6px 0 8px;
  font-size: 14.5px;
  color: var(--redup);
  line-height: 1.5;
}
.chip {
  display: inline-block;
  margin: 0 6px 6px 0;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-family: var(--mono);
  border: 1px solid var(--garis);
  color: var(--teks);
}
.segera {
  padding: 16px;
  border-radius: 18px;
  border: 1px dashed var(--garis);
  color: var(--redup);
  font-family: var(--mono);
  font-size: 13px;
  text-align: center;
}

/* Catatan. */
.catatan {
  padding: 16px 0;
  border-top: 1px solid var(--garis);
}
.catatan:first-of-type {
  border-top: 0;
}
.catatan time {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--oranye);
}
.catatan h3 {
  margin: 4px 0 6px;
  font-size: 19px;
}
.catatan p {
  margin: 0;
  color: var(--redup);
  font-size: 15px;
}

/* Tombol. */
.tombol {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  background: var(--teks);
  color: var(--malam);
  transition: transform 0.2s, background 0.2s;
}
.tombol:hover {
  transform: translateY(-2px);
}
.tombol.garis {
  background: transparent;
  color: var(--teks);
  border: 1px solid var(--garis);
}
.tombol[aria-disabled='true'] {
  opacity: 0.5;
  pointer-events: none;
}
.tombol svg {
  width: 20px;
  height: 20px;
}
.baris-tombol {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.kecil {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--redup);
}

footer {
  position: relative;
  z-index: 2;
  padding: 26px clamp(16px, 5vw, 72px) 34px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--redup);
}

/* Mutu ringan (perangkat lemah atau tanpa kartu grafis): tanpa kaca buram
   dan butiran film, karena keduanya dihitung ulang di setiap gambar. */
.ringan .kertas,
.ringan .menu {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}
.ringan .kertas {
  background: rgba(9, 15, 24, 0.84);
}
.ringan .menu {
  background: rgba(7, 13, 22, 0.8);
}
.ringan .butiran {
  display: none;
}

.tanpa-3d #dunia {
  display: none;
}
.tanpa-3d body,
body.tanpa-3d {
  background: radial-gradient(ellipse at 50% 120%, #2c5573 0%, #13324f 40%, #06101f 100%);
}

@media (max-width: 720px) {
  body {
    font-size: 16px;
  }
  .menu a {
    padding: 6px 9px;
    font-size: 12px;
  }
  .menu .lebar {
    display: none;
  }
  .layar,
  .layar.kanan {
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 40px;
  }
  .halo {
    padding-bottom: 14vh;
  }
  .kertas {
    padding: 22px;
  }
}

/* HP kecil (lebar ±320 px): nama di samping logo disembunyikan. */
@media (max-width: 380px) {
  .merek span {
    display: none;
  }
  .menu a {
    padding: 6px 8px;
  }
}

/* HP dimiringkan (layar pendek): judul dan jarak diperkecil. */
@media (max-height: 520px) and (orientation: landscape) {
  .atas {
    padding-top: 10px;
    padding-bottom: 10px;
  }
  .layar {
    padding-top: 74px;
    padding-bottom: 28px;
  }
  .halo {
    padding-bottom: 28px;
  }
  .coretan {
    width: 120px;
    height: 50px;
  }
  .judul-besar {
    font-size: clamp(48px, 9vw, 96px);
  }
  .tagline {
    margin-top: 10px;
  }
  .gulir {
    margin-top: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .butiran,
  .gulir::after {
    animation: none;
  }
  .coretan path {
    animation: none;
    stroke-dashoffset: 0;
  }
}

/* ===== Halaman produk (XFileChange) ===================================== */
.produk {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: clamp(20px, 4vw, 56px);
  align-items: center;
}
.produk-teks {
  max-width: 560px;
}
.kembali {
  display: inline-block;
  margin-bottom: 18px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--redup);
  text-decoration: none;
}
.kembali:hover {
  color: var(--teks);
}
.judul-produk {
  margin: 6px 0 0;
  font-weight: 800;
  font-size: clamp(42px, 7vw, 84px);
  line-height: 1;
  letter-spacing: -0.01em;
  text-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
}
.deret-chip {
  margin: 16px 0 22px;
}
.produk .tagline {
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.45);
}

/* Laptop dan HP 3D dari CSS, memakai gambar layar aplikasi asli. */
.perangkat {
  perspective: 1500px;
  padding: 4% 6% 8% 0;
}
.panggung {
  --ry: -18deg;
  --rx: 8deg;
  position: relative;
  transform-style: preserve-3d;
  transform: rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
  animation: melayang 7s ease-in-out infinite;
}
@keyframes melayang {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -10px; }
}
.laptop {
  width: 88%;
  transform-style: preserve-3d;
}
.laptop-layar {
  position: relative;
  aspect-ratio: 16 / 10;
  border: clamp(6px, 0.9vw, 11px) solid #121a23;
  border-radius: 14px;
  overflow: hidden;
  background: #121a23;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}
.laptop-layar img,
.hp img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}
.laptop-alas {
  height: clamp(70px, 11vw, 150px);
  margin: 0 -5%;
  transform-origin: top center;
  transform: rotateX(82deg);
  border-radius: 0 0 16px 16px;
  background: linear-gradient(180deg, #c9d0d8, #8d96a0);
  box-shadow: 0 40px 50px rgba(0, 0, 0, 0.5);
}
.hp {
  position: absolute;
  right: 0;
  bottom: 6%;
  width: 27%;
  aspect-ratio: 720 / 1558;
  border: clamp(4px, 0.6vw, 7px) solid #0e141b;
  border-radius: clamp(16px, 2.4vw, 28px);
  overflow: hidden;
  background: #0e141b;
  transform: translateZ(90px) rotateY(10deg);
  box-shadow: 0 30px 50px rgba(0, 0, 0, 0.5);
}

/* Lembaran lebar untuk fitur dan cara pasang. */
.kertas.lebar {
  width: min(980px, 100%);
}
.kategori {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
}
.kat {
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--kertas-terang);
  border: 1px solid var(--garis);
}
.kat h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--oranye);
}
.kat ul,
.centang,
.dua-kolom ol {
  margin: 0;
  padding: 0 0 0 20px;
}
.kat li {
  font-size: 15px;
  color: var(--redup);
  margin: 4px 0;
}
.fmt {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--teks);
  word-spacing: 4px;
}
.galeri {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
  perspective: 1200px;
}
.galeri figure {
  margin: 0;
  text-align: center;
}
.galeri img {
  display: block;
  width: 100%;
  aspect-ratio: 720 / 1558;
  object-fit: cover;
  border-radius: 18px;
  border: 5px solid #0e141b;
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.4);
  transition: transform 0.4s ease;
}
.galeri figure:nth-child(odd) img {
  transform: rotateY(8deg) translateY(6px);
}
.galeri figure:nth-child(even) img {
  transform: rotateY(-8deg);
}
.galeri figure:hover img {
  transform: translateY(-6px) scale(1.02);
}
.galeri figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--redup);
}
.centang {
  list-style: none;
  padding: 0;
}
.centang li {
  position: relative;
  padding: 7px 0 7px 30px;
  border-top: 1px solid var(--garis);
}
.centang li:first-child {
  border-top: 0;
}
.centang li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 14px;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--oranye);
  border-bottom: 2px solid var(--oranye);
  transform: rotate(-45deg);
}

/* Unduhan. */
.unduhan {
  display: grid;
  gap: 12px;
}
.unduh-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px;
  border-radius: 18px;
  background: var(--kertas-terang);
  border: 1px solid var(--garis);
}
.unduh-ikon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(245, 165, 36, 0.14);
  color: var(--oranye);
}
.unduh-ikon svg {
  width: 24px;
  height: 24px;
}
.unduh-item h3 {
  margin: 0;
  font-size: 17px;
}
.unduh-item p {
  margin: 2px 0 4px;
  font-size: 14px;
  color: var(--redup);
  line-height: 1.45;
}
.unduh-item .kecil {
  margin: 0;
}
.keaslian {
  margin-top: 16px;
  font-size: 14px;
  color: var(--redup);
}
.keaslian summary {
  cursor: pointer;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--teks);
}
.keaslian p {
  margin: 10px 0 6px;
}
.keaslian code,
.hash dd {
  font-family: var(--mono);
  font-size: 12px;
  overflow-wrap: anywhere;
  color: var(--teks);
}
.sidik {
  display: block;
}
.hash {
  margin: 0;
}
.hash dt {
  margin-top: 8px;
  font-size: 12.5px;
}
.hash dd {
  margin: 2px 0 0;
}

/* Cara pasang. */
.dua-kolom {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px 28px;
}
.dua-kolom h3 {
  margin: 4px 0 8px;
  font-size: 19px;
}
.dua-kolom li {
  margin: 6px 0;
  font-size: 15px;
  color: var(--redup);
}

/* Halaman teks panjang (Privasi). */
.dokumen h3 {
  margin: 22px 0 6px;
  font-size: 19px;
}
.dokumen p,
.dokumen li {
  color: var(--redup);
  font-size: 15.5px;
}
.dokumen ul {
  margin: 0;
  padding-left: 20px;
}

@media (max-width: 900px) {
  .produk {
    grid-template-columns: minmax(0, 1fr);
    align-content: end;
  }
  .perangkat {
    order: -1;
    width: min(520px, 100%);
    padding: 0 8% 4% 0;
  }
  .galeri {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .produk {
    padding-top: 90px;
  }
  .unduh-item {
    grid-template-columns: 40px minmax(0, 1fr);
  }
  .unduh-item .tombol {
    grid-column: 1 / -1;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .panggung {
    animation: none;
  }
}