/* Landing page OpenSIMRS — opensimrs.com. Tanpa build, tanpa framework. */
:root {
  --biru: #1a66e0;
  --biru-tua: #0f4aa6;
  --teal: #13b393;
  --gradasi: linear-gradient(120deg, #1a66e0 0%, #13b393 100%);
  --latar: #ffffff;
  --latar-2: #f5f8fc;
  --kartu: #ffffff;
  --teks: #0f1b2d;
  --teks-2: #4a5a70;
  --garis: #e3e9f2;
  --kode-latar: #0f1b2d;
  --kode-teks: #e6edf7;
  --bayang: 0 10px 30px rgba(15, 27, 45, 0.08);
  --radius: 16px;
  --lebar: 1160px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --latar: #0b1220;
    --latar-2: #0f1829;
    --kartu: #121d31;
    --teks: #e8eef8;
    --teks-2: #a3b1c6;
    --garis: #1f2c44;
    --kode-latar: #070d18;
    --bayang: 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--teks);
  background: var(--latar);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--biru); text-decoration: none; }
img { max-width: 100%; display: block; }
.wadah { max-width: var(--lebar); margin: 0 auto; padding: 0 20px; }
.gradasi-teks { background: var(--gradasi); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* ── Navigasi ─────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--latar) 85%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--garis);
}
.nav .wadah { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.merek { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--teks); }
.merek img { width: 34px; height: 34px; }
.nav-tautan { display: flex; align-items: center; gap: 26px; font-weight: 600; font-size: 15px; }
.nav-tautan a { color: var(--teks-2); }
.nav-tautan a:hover { color: var(--biru); }
.tombol {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 20px; border-radius: 12px;
  font-weight: 700; font-size: 15px; border: 1px solid transparent; transition: transform .15s, box-shadow .15s, background .15s;
}
.tombol:hover { transform: translateY(-1px); }
.tombol-utama { background: var(--gradasi); color: #fff; box-shadow: 0 8px 20px rgba(26, 102, 224, .25); }
.tombol-garis { border-color: var(--garis); color: var(--teks); background: var(--kartu); }
.tombol-garis:hover { border-color: var(--biru); color: var(--biru); }
.tombol svg { width: 18px; height: 18px; }
.menu-hp { display: none; background: none; border: 0; color: var(--teks); padding: 6px; }
.menu-hp svg { width: 26px; height: 26px; }

/* ── Hero ─────────────────────────────────────────────── */
.hero { position: relative; overflow: hidden; padding: 84px 0 64px; }
.hero::before {
  content: ""; position: absolute; inset: -40% -10% auto auto; width: 720px; height: 720px; border-radius: 50%;
  background: radial-gradient(circle, rgba(19, 179, 147, .18), transparent 65%); pointer-events: none;
}
.hero::after {
  content: ""; position: absolute; inset: auto auto -50% -15%; width: 640px; height: 640px; border-radius: 50%;
  background: radial-gradient(circle, rgba(26, 102, 224, .16), transparent 65%); pointer-events: none;
}
.hero .wadah { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.lencana {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 700;
  background: color-mix(in srgb, var(--teal) 14%, transparent); color: var(--teal);
}
.lencana i { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); display: inline-block; }
.hero h1 { font-size: clamp(36px, 5vw, 58px); line-height: 1.08; margin: 18px 0 18px; letter-spacing: -0.02em; font-weight: 800; }
.hero p.sub { font-size: 19px; color: var(--teks-2); max-width: 560px; margin: 0 0 30px; }
.aksi { display: flex; flex-wrap: wrap; gap: 12px; }
.teknologi { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 8px; }
.teknologi span {
  font-size: 13px; font-weight: 600; padding: 5px 12px; border-radius: 8px; background: var(--latar-2); color: var(--teks-2); border: 1px solid var(--garis);
}
.terminal { background: var(--kode-latar); border-radius: var(--radius); box-shadow: var(--bayang); overflow: hidden; border: 1px solid #1d2a41; }
.terminal .bilah { display: flex; gap: 7px; padding: 14px 16px; border-bottom: 1px solid #1d2a41; }
.terminal .bilah i { width: 11px; height: 11px; border-radius: 50%; background: #3a465c; display: inline-block; }
.terminal .bilah i:nth-child(1) { background: #f26b5b; } .terminal .bilah i:nth-child(2) { background: #f5c04f; } .terminal .bilah i:nth-child(3) { background: #3ccf7a; }
.terminal pre { margin: 0; padding: 20px 22px 24px; color: var(--kode-teks); font: 14px/1.75 "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace; overflow-x: auto; }
.terminal .k { color: #6f86a6; } .terminal .p { color: #7dd3c0; } .terminal .ok { color: #3ccf7a; }

/* ── Angka ────────────────────────────────────────────── */
.angka { padding: 8px 0 40px; }
.angka .wadah { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.angka div.butir { background: var(--kartu); border: 1px solid var(--garis); border-radius: var(--radius); padding: 22px; text-align: center; }
.angka b { display: block; font-size: 36px; font-weight: 800; line-height: 1.1; }
.angka span { color: var(--teks-2); font-size: 14px; font-weight: 600; }

/* ── Bagian umum ──────────────────────────────────────── */
section.bagian { padding: 84px 0; }
section.bagian.abu { background: var(--latar-2); }
.judul-bagian { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.judul-bagian .kecil { color: var(--teal); font-weight: 800; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; }
.judul-bagian h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.2; margin: 10px 0 14px; letter-spacing: -0.01em; }
.judul-bagian p { color: var(--teks-2); font-size: 17px; margin: 0; }

.kisi { display: grid; gap: 18px; }
.kisi-3 { grid-template-columns: repeat(3, 1fr); }
.kisi-4 { grid-template-columns: repeat(4, 1fr); }
.kartu {
  background: var(--kartu); border: 1px solid var(--garis); border-radius: var(--radius); padding: 26px;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.kartu:hover { transform: translateY(-3px); box-shadow: var(--bayang); border-color: color-mix(in srgb, var(--biru) 35%, var(--garis)); }
.ikon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 16px;
  background: color-mix(in srgb, var(--biru) 12%, transparent); color: var(--biru);
}
.ikon.teal { background: color-mix(in srgb, var(--teal) 14%, transparent); color: var(--teal); }
.ikon svg { width: 24px; height: 24px; }
.kartu h3 { margin: 0 0 8px; font-size: 18px; }
.kartu p { margin: 0; color: var(--teks-2); font-size: 15px; }

/* Segmen */
.segmen .kartu { padding: 22px; }
.segmen .kartu small { display: block; color: var(--teal); font-weight: 800; font-size: 12px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 6px; }

/* Studio */
.studio .wadah { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.studio h2 { font-size: clamp(28px, 3.4vw, 40px); line-height: 1.2; margin: 10px 0 14px; }
.studio p { color: var(--teks-2); font-size: 17px; }
.tahap { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.tahap li {
  display: flex; gap: 14px; align-items: flex-start; background: var(--kartu); border: 1px solid var(--garis); border-radius: 12px; padding: 14px 16px;
}
.tahap li b.no {
  flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-size: 14px; color: #fff; background: var(--gradasi);
}
.tahap li strong { display: block; }
.tahap li span { color: var(--teks-2); font-size: 14px; }
.daftar-cek { list-style: none; padding: 0; margin: 20px 0 28px; display: grid; gap: 10px; }
.daftar-cek li { display: flex; gap: 10px; align-items: flex-start; color: var(--teks-2); }
.daftar-cek li::before { content: "✓"; color: var(--teal); font-weight: 800; }

/* Instalasi */
.langkah { counter-reset: langkah; }
.langkah .kartu { position: relative; padding-top: 34px; }
.langkah .kartu::before {
  counter-increment: langkah; content: counter(langkah); position: absolute; top: -16px; left: 24px; width: 34px; height: 34px; border-radius: 10px;
  display: grid; place-items: center; font-weight: 800; color: #fff; background: var(--gradasi);
}
.langkah code, .kartu code {
  display: block; margin-top: 12px; padding: 10px 12px; border-radius: 10px; background: var(--kode-latar); color: var(--kode-teks);
  font: 13px/1.6 "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace; overflow-x: auto; white-space: pre;
}

/* Komunitas */
.komunitas .kartu { text-align: center; }
.komunitas .ikon { margin: 0 auto 14px; }

/* CTA */
.cta {
  margin: 0 auto; max-width: var(--lebar); border-radius: 24px; padding: 56px 40px; text-align: center; color: #fff; background: var(--gradasi);
  box-shadow: 0 20px 50px rgba(26, 102, 224, .25);
}
.cta h2 { margin: 0 0 12px; font-size: clamp(26px, 3vw, 36px); }
.cta p { margin: 0 0 28px; opacity: .92; font-size: 17px; }
.cta .tombol-putih { background: #fff; color: var(--biru-tua); }
.cta .tombol-transparan { border-color: rgba(255, 255, 255, .55); color: #fff; }

/* Footer */
footer { border-top: 1px solid var(--garis); padding: 48px 0 32px; margin-top: 84px; }
footer .wadah { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 32px; }
footer h4 { margin: 0 0 12px; font-size: 14px; text-transform: uppercase; letter-spacing: .08em; color: var(--teks-2); }
footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
footer ul a { color: var(--teks); font-weight: 500; }
footer ul a:hover { color: var(--biru); }
footer .hak { grid-column: 1 / -1; border-top: 1px solid var(--garis); padding-top: 20px; color: var(--teks-2); font-size: 14px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
footer p { color: var(--teks-2); margin: 10px 0 0; font-size: 15px; }

/* ── Responsif ────────────────────────────────────────── */
@media (max-width: 980px) {
  .hero .wadah, .studio .wadah { grid-template-columns: 1fr; }
  .kisi-3, .kisi-4 { grid-template-columns: repeat(2, 1fr); }
  .angka .wadah { grid-template-columns: repeat(2, 1fr); }
  footer .wadah { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav-tautan { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--latar); border-bottom: 1px solid var(--garis); padding: 8px 16px 16px; }
  .nav-tautan.buka { display: flex; }
  .nav-tautan a { padding: 12px 4px; border-bottom: 1px solid var(--garis); }
  .nav-tautan a.tombol { margin-top: 12px; justify-content: center; border-bottom: 0; }
  .menu-hp { display: block; }
  .hero { padding: 48px 0 40px; }
  section.bagian { padding: 60px 0; }
  .kisi-3, .kisi-4 { grid-template-columns: 1fr; }
  .cta { border-radius: 0; padding: 44px 20px; }
  footer .wadah { grid-template-columns: 1fr; }
}