/* ============================================================
   NEUROVA — patch.css
   Dimuat SETELAH site.css:

     <link rel="stylesheet" href="css/site.css">
     <link rel="stylesheet" href="css/patch.css">

   Isi:
     1. Perbaikan bug di site.css
     2. Tombol panah
     3. Bagian artikel + garis sinyal
   ============================================================ */


/* ============================================================
   1. PERBAIKAN BUG
   ============================================================ */

/* .eyebrow di site.css punya tiga kesalahan yang membuat aturannya
   diabaikan browser:
     margin-bottom: 32 px   -> ada spasi, deklarasi dibuang
     gap: none              -> bukan nilai yang sah
     var(--font-mono)       -> variabelnya bernama --mono, bukan --font-mono
   Ditulis ulang di sini.                                           */
.eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  margin-bottom: 26px;
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--teal);
}

/* HTML memakai .eyebrow__dot, tapi site.css hanya punya .eyebrow__line,
   jadi titiknya selama ini tidak tampil sama sekali. */
.eyebrow__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  flex: none;
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(23, 184, 147, .55); }
  60%      { box-shadow: 0 0 0 8px rgba(23, 184, 147, 0); }
}

.eyebrow__sep { color: rgba(12, 18, 32, .25); }

/* .hero__source di site.css memakai rgba(...,.3) — terlalu tipis untuk
   teks yang isinya keterbukaan soal ilustrasi AI. Dinaikkan agar terbaca. */
.hero__source { color: var(--muted); font-size: .66rem; }

/* Logo 70px di dalam bar 74px membuat header terasa sesak.
   Diturunkan ke 38px agar seimbang dengan tinggi navigasi. */
.nav__mark {
  width: 38px;
  height: 38px;
  object-fit: contain;
}
.nav__word { font-size: 1.15rem; letter-spacing: .16em; }


/* ============================================================
   2. TOMBOL PANAH
   Radius 12px sengaja dipilih karena sudah dipakai input formulir
   di site.css — jadi tetap satu keluarga, hanya lebih tegas.
   ============================================================ */

.btn--arrow {
  border-radius: 12px;
  padding: 16px 22px;
  gap: 12px;
}

.btn__arrow {
  width: 17px;
  height: 17px;
  flex: none;
  transition: transform .32s var(--ease);
}
.btn--arrow:hover .btn__arrow  { transform: translateX(5px); }
.btn--down:hover .btn__arrow   { transform: translateY(4px); }

/* Tombol sekunder: rata dengan primer, bukan pil */
.btn--ghost.btn--arrow {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}
.btn--ghost.btn--arrow:hover {
  border-color: var(--teal);
  color: var(--teal);
  background: rgba(255, 255, 255, .6);
}

/* Judul hero sekarang berupa kalimat, bukan slogan tiga kata.
   Ukuran maksimum diturunkan dari 75px agar tidak pecah jadi
   empat baris di kolom kiri. */
.hero__title { font-size: clamp(36px, 5vw, 58px); }

/* PENTING: dibungkus media query.
   Tanpa ini, aturan satu kolom milik site.css di <=980px akan
   tertimpa karena patch.css dimuat belakangan — hero jadi tetap
   dua kolom di ponsel dan isinya terpotong. */
@media (min-width: 981px) {
  .hero__inner { grid-template-columns: 1.12fr .88fr; }
}

/* Baris "yang diukur" pengganti statistik hero */
.hero__measures {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  list-style: none;
  margin: 0;
  padding-left: 0;
}
.hero__measures li {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.hero__measures li::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--mint);
  flex: none;
}


/* ============================================================
   3. ARTIKEL
   ============================================================ */

.story { background: var(--paper); }

.story__intro {
  max-width: 640px;
  margin-bottom: clamp(48px, 7vw, 84px);
}
.story__intro p {
  color: var(--muted);
  font-size: clamp(17px, 1.7vw, 19px);
}

/* --- Garis sinyal: pemisah antar sub-bab ---------------------
   Bukan garis hias. Bentuknya meniru pembacaan sensor di hero —
   satu pulsa berjalan sekali dari kiri ke kanan saat sub-bab
   berikutnya masuk layar.                                       */
.signal {
  position: relative;
  height: 2px;
  border-radius: 2px;
  background: var(--line);
  overflow: hidden;
  margin-block: clamp(44px, 6vw, 72px);
}
.signal i {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--mint) 45%, var(--teal) 55%, transparent);
  background-size: 170px 100%;
  background-repeat: no-repeat;
  background-position: -170px 0;
}
.signal.is-in i { animation: sweep 1.9s var(--ease) forwards; }
@keyframes sweep { to { background-position: calc(100% + 170px) 0; } }

/* --- Kepala sub-bab ----------------------------------------- */
.art__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
}
.art__no {
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 600;
  color: var(--mint);
  letter-spacing: .1em;
}
.art__label {
  font-family: var(--mono);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}
.art__label::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 1px;
  background: var(--line);
  vertical-align: middle;
  margin-right: 14px;
}

.art__title {
  font: 800 clamp(26px, 3.6vw, 42px)/1.14 var(--display);
  letter-spacing: -.025em;
  max-width: 20ch;
  margin-bottom: 24px;
  text-wrap: balance;
}
.art__title em {
  font-style: italic;
  background: linear-gradient(100deg, #3b82f6, var(--mint) 55%, var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.art__body { max-width: 62ch; }
.art__body p { color: var(--muted); }
.art__body p + p { margin-top: 16px; }
.art__body strong { color: var(--ink); font-weight: 600; }

/* Tata letak dua kolom untuk sub-bab yang punya pendamping */
.art--split {
  display: grid;
  grid-template-columns: 1fr .85fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}
.art--split .art__title { margin-bottom: 20px; }

/* Kutipan dari wawancara */
.art__quote {
  border-left: 3px solid var(--mint);
  padding: 4px 0 4px 20px;
  margin-top: 26px;
  font: 500 clamp(17px, 2vw, 20px)/1.5 var(--display);
  letter-spacing: -.015em;
  color: var(--ink);
  max-width: 34ch;
}
.art__quote cite {
  display: block;
  margin-top: 12px;
  font: 500 .66rem var(--mono);
  font-style: normal;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

/* --- Rantai proses (sub-bab 03) ------------------------------ */
.chain {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 8px;
}
.chain__node {
  position: relative;
  padding: 22px 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-right: 0;
  transition: .4s var(--ease);
}
.chain__node:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.chain__node:last-child  { border-radius: 0 var(--radius) var(--radius) 0; border-right: 1px solid var(--line); }
.chain__node:hover {
  background: var(--tint);
  border-color: rgba(23, 184, 147, .4);
  z-index: 1;
}
.chain__no {
  font: 600 .66rem var(--mono);
  letter-spacing: .14em;
  color: var(--mint);
  display: block;
  margin-bottom: 10px;
}
.chain__name {
  font: 700 1.05rem var(--display);
  letter-spacing: -.01em;
  margin-bottom: 6px;
}
.chain__desc { color: var(--muted); font-size: .84rem; line-height: 1.5; }

/* Panah penghubung antar simpul */
.chain__node + .chain__node::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 50%;
  width: 13px;
  height: 13px;
  margin-top: -6.5px;
  border-right: 1.5px solid var(--mint);
  border-top: 1.5px solid var(--mint);
  transform: rotate(45deg);
  background: var(--paper);
  z-index: 2;
}

/* --- Kartu parameter (sub-bab 04) ---------------------------- */
.params {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 8px;
}
.param {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: .4s var(--ease);
}
.param:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: rgba(23, 184, 147, .45);
}
.param__unit {
  font: 500 .64rem var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--teal);
  background: var(--tint);
  padding: 5px 10px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 16px;
}
.param__name {
  font: 700 1.12rem var(--display);
  letter-spacing: -.015em;
  margin-bottom: 7px;
}
.param p { color: var(--muted); font-size: .9rem; line-height: 1.55; }

/* --- Catatan status (sub-bab 05) ----------------------------- */
.status {
  background: var(--tint);
  border: 1px solid rgba(14, 125, 102, .18);
  border-radius: var(--lg);
  padding: clamp(26px, 4vw, 40px);
}
.status__list {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: grid;
  gap: 0;
}
.status__list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 13px 0;
  border-top: 1px solid rgba(14, 125, 102, .16);
  color: var(--muted);
  font-size: .94rem;
  line-height: 1.5;
}
.status__list li:first-child { border-top: 0; }
.status__step {
  font: 600 .66rem var(--mono);
  letter-spacing: .1em;
  color: var(--teal);
  flex: none;
  padding-top: 3px;
  min-width: 26px;
}
.status__now {
  color: var(--ink);
  font-weight: 600;
}
.status__badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font: 500 .62rem var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #0a6250;
  background: rgba(255, 255, 255, .75);
  border-radius: 999px;
  padding: 4px 10px;
  margin-left: 10px;
  vertical-align: 2px;
}


/* ============================================================
   4. ANIMASI TEKS BERTAHAP
   Judul muncul baris demi baris. Jarak antar baris diatur JS
   lewat --d, sehingga tidak perlu menulis delay satu per satu.
   ============================================================ */

.js [data-stagger] > span {
  display: block;
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity .7s var(--ease),
    transform .7s var(--ease);
  transition-delay: var(--d, 0s);
}
.js [data-stagger].is-in > span {
  opacity: 1;
  transform: none;
}


/* ============================================================
   5. RESPONSIF
   ============================================================ */

@media (max-width: 900px) {
  .art--split   { grid-template-columns: 1fr; }
  .chain        { grid-template-columns: 1fr 1fr; }
  .chain__node  { border-right: 1px solid var(--line); border-radius: var(--radius) !important; }
  .chain__node + .chain__node::before { display: none; }
  .params       { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .chain { grid-template-columns: 1fr; }
  .hero__cta .btn { width: 100%; }
  .art__title { max-width: none; }
}

@media (prefers-reduced-motion: reduce) {
  .eyebrow__dot { animation: none; }
  .signal.is-in i { animation: none; background-position: -170px 0; }
  .js [data-stagger] > span { opacity: 1; transform: none; transition: none; }
  .btn__arrow { transition: none; }
}


/* ============================================================
   6. PITA GELAP UNTUK SUB-BAB 03
   Artikel sepanjang ~4000px dengan satu warna latar terasa monoton.
   Sub-bab 03 dipindah ke latar gelap sebagai jeda baca — sekaligus
   membuat rantai prosesnya menonjol.
   ============================================================ */

.story-dark {
  background: var(--ink);
  color: var(--paper);
  padding-block: clamp(64px, 9vw, 118px);
}
.story-dark .art__label { color: rgba(247, 249, 248, .55); }
.story-dark .art__label::before { background: rgba(247, 249, 248, .2); }
.story-dark .art__title { color: var(--paper); }
.story-dark .art__body p { color: rgba(247, 249, 248, .66); }

/* Simpul rantai versi gelap */
.story-dark .chain__node {
  background: rgba(247, 249, 248, .045);
  border-color: rgba(247, 249, 248, .14);
  backdrop-filter: blur(6px);
}
.story-dark .chain__node:last-child { border-right-color: rgba(247, 249, 248, .14); }
.story-dark .chain__node:hover {
  background: rgba(23, 184, 147, .09);
  border-color: rgba(23, 184, 147, .5);
}
.story-dark .chain__name { color: var(--paper); }
.story-dark .chain__desc { color: rgba(247, 249, 248, .62); }
.story-dark .chain__node + .chain__node::before { background: var(--ink); }

/* Bagian terang yang mengapit pita gelap tidak perlu padding penuh,
   supaya jarak antar bagian tidak menumpuk jadi terlalu longgar. */
.story--atas  { padding-bottom: clamp(56px, 8vw, 100px); }
.story--bawah { padding-top:    clamp(56px, 8vw, 100px); }

@media (max-width: 900px) {
  .story-dark .chain__node { border-right: 1px solid rgba(247, 249, 248, .14); }
}


/* ============================================================
   7. HALAMAN DALAM
   (cara kerja, teknologi, produk, FAQ, daftar minat)
   ============================================================ */

/* Judul bertahap harus tetap satu baris per <span> meski JavaScript
   mati. Sebelumnya aturan display:block ikut digerbangi kelas .js,
   sehingga tanpa JS baris-barisnya menyatu jadi satu paragraf. */
[data-stagger] > span { display: block; }

/* Kepala halaman dalam disamakan iramanya dengan hero beranda */
.page-hero { position: relative; }
.page-hero__title {
  /* site.css memberi 72px. Judul halaman dalam berupa kalimat, bukan
     dua-tiga kata, jadi di 72px selalu pecah jadi tiga baris. */
  font-size: clamp(34px, 4.8vw, 56px);
  max-width: 18ch;
  text-wrap: balance;
}
.page-hero__title em {
  font-style: italic;
  background: linear-gradient(100deg, #3b82f6, var(--mint) 55%, var(--teal));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-hero .eyebrow { margin-bottom: 22px; }

/* site.css tidak punya .footer__logo padahal dipakai di lima halaman */
.footer__logo {
  width: 34px;
  height: 34px;
  object-fit: contain;
  border-radius: 8px;
  flex: none;
}

/* Kelompok pertanyaan di halaman FAQ */
.faq-group + .faq-group { margin-top: clamp(40px, 6vw, 68px); }
.faq-group__title {
  font: 800 clamp(20px, 2.4vw, 26px) var(--display);
  letter-spacing: -.02em;
  margin-bottom: 6px;
}
.faq-group__note { color: var(--muted); font-size: .94rem; margin-bottom: 18px; }

/* Dua panel bersanding di halaman daftar minat */
.pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: clamp(24px, 4vw, 36px);
}
.pair__card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 22px;
}
.pair__title {
  font: 500 .64rem var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--teal);
  background: var(--tint);
  border-radius: 999px;
  padding: 5px 11px;
  display: inline-block;
  margin-bottom: 16px;
}
.pair__list { list-style: none; padding: 0; margin: 0; }
.pair__list li {
  position: relative;
  padding: 10px 0 10px 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.5;
}
.pair__list li:first-child { border-top: 0; }
.pair__list li::before {
  content: "";
  position: absolute;
  left: 2px; top: 17px;
  width: 8px; height: 8px;
  border-radius: 50%;
  border: 2px solid var(--mint);
}
.pair__card--no .pair__title { color: #8a5219; background: #fdf6ec; }
.pair__card--no .pair__list li::before { border-color: rgba(12, 18, 32, .28); }

/* Kartu spesifikasi material di halaman produk */
.matgrid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 18px;
  margin-top: 8px;
}
.mat {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: .4s var(--ease);
}
.mat:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: rgba(23, 184, 147, .45);
}
.mat__part {
  font: 500 .62rem var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--teal);
  display: block;
  margin-bottom: 12px;
}
.mat__name { font: 700 1.05rem var(--display); letter-spacing: -.01em; margin-bottom: 6px; }
.mat p { color: var(--muted); font-size: .88rem; line-height: 1.55; }

@media (max-width: 760px) {
  .pair { grid-template-columns: 1fr; }
}

/* ============================================================
   TECHNOLOGY PAGE FIX
   ============================================================ */

.tech {
  position: relative;
  display: block;
  visibility: visible;
  overflow: hidden;
}

.tech__bg {
  display: block;
}

.tech__grid {
  position: relative;
  z-index: 2;
  display: grid;
}

.tech__media,
.tech__specs,
.spec {
  visibility: visible;
}

.tech .reveal {
  visibility: visible;
}

.tech__media img {
  display: block;
  width: 100%;
  height: auto;
}

.spec {
  display: block;
}