/* Huruf disimpan lokal (SIL OFL, dari Fontsource), tanpa CDN. */
@font-face { font-family: "Plus Jakarta Sans"; src: url(font/plus-jakarta-sans-latin-400-normal.woff2) format("woff2"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url(font/plus-jakarta-sans-latin-600-normal.woff2) format("woff2"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url(font/plus-jakarta-sans-latin-700-normal.woff2) format("woff2"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Plus Jakarta Sans"; src: url(font/plus-jakarta-sans-latin-800-normal.woff2) format("woff2"); font-weight: 800; font-style: normal; font-display: swap; }

:root {
  --latar: #faf8f5;
  --permukaan: #ffffff;
  --permukaan-2: #f3efe9;
  --garis: #e4ddd3;
  --teks: #1f1b16;
  --teks-2: #5c554c;
  --aksen: #c8421a;
  --aksen-lembut: #fde8df;
  --pasir: #ecd9a4;
  --lempung: #b99478;
  --tiang: #8a8f98;
  --sukses: #1f7a4d;
  --peringatan: #9a5b00;
  --peringatan-latar: #fff4dc;
  --bayangan: 0 1px 2px rgba(31, 27, 22, .06), 0 4px 16px rgba(31, 27, 22, .06);
  --radius: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --latar: #16130f;
    --permukaan: #1f1b17;
    --permukaan-2: #29241f;
    --garis: #3a332c;
    --teks: #f2ede6;
    --teks-2: #b5aca0;
    --aksen: #ff7a4d;
    --aksen-lembut: #3b2219;
    --pasir: #8c7a45;
    --lempung: #7a5a44;
    --tiang: #a9aeb6;
    --sukses: #5fd39a;
    --peringatan: #ffc56b;
    --peringatan-latar: #33280f;
    --bayangan: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 16px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--latar);
  color: var(--teks);
  font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

a { color: var(--aksen); text-underline-offset: 3px; }

.wadah { max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* Navigasi */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--latar) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--garis);
}
.nav .wadah { display: flex; align-items: center; gap: 20px; height: 60px; }
.nav .merek { font-weight: 800; color: var(--teks); text-decoration: none; letter-spacing: -.01em; }
.nav .merek span { color: var(--aksen); }
.nav ul { display: flex; gap: 18px; list-style: none; margin: 0 0 0 auto; padding: 0; font-size: 15px; }
.nav ul a { color: var(--teks-2); text-decoration: none; }
.nav ul a:hover, .nav ul a[aria-current="page"] { color: var(--teks); }

/* Tipografi */
h1, h2, h3 { line-height: 1.2; letter-spacing: -.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(32px, 6vw, 56px); font-weight: 800; }
h2 { font-size: clamp(22px, 3.2vw, 30px); font-weight: 750; margin-top: 1.6em; }
h3 { font-size: 19px; font-weight: 700; margin-top: 1.4em; }
p { margin: 0 0 1em; }
.redup { color: var(--teks-2); }
.kecil { font-size: 14px; }
.label-atas {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--aksen); margin-bottom: 12px;
}

/* Beranda */
.pahlawan { padding: 72px 0 40px; }
.pahlawan p.lead { font-size: clamp(18px, 2.4vw, 22px); color: var(--teks-2); max-width: 680px; }
.fakta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.fakta span {
  background: var(--permukaan); border: 1px solid var(--garis); border-radius: 999px;
  padding: 6px 14px; font-size: 14px; color: var(--teks-2);
}

.kisi { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.kartu {
  background: var(--permukaan); border: 1px solid var(--garis); border-radius: var(--radius);
  padding: 22px; box-shadow: var(--bayangan);
}
a.kartu { color: inherit; text-decoration: none; display: block; transition: transform .15s ease, border-color .15s ease; }
a.kartu:hover { transform: translateY(-2px); border-color: var(--aksen); }
.kartu h3 { margin-top: 0; }
.kartu .lencana {
  display: inline-block; font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px;
  background: var(--aksen-lembut); color: var(--aksen); margin-bottom: 10px;
}
.kartu.utama { grid-column: 1 / -1; display: grid; gap: 24px; grid-template-columns: 1.2fr 1fr; align-items: center; }
@media (max-width: 720px) { .kartu.utama { grid-template-columns: 1fr; } }

.daftar-bersih { list-style: none; padding: 0; margin: 0; }
.daftar-bersih li { padding: 10px 0; border-top: 1px solid var(--garis); }
.daftar-bersih li:first-child { border-top: 0; }

/* Tombol dan isian */
.tombol {
  display: inline-flex; align-items: center; gap: 8px; border: 1px solid var(--garis); background: var(--permukaan);
  color: var(--teks); border-radius: 10px; padding: 9px 16px; font: inherit; font-size: 15px; font-weight: 600;
  cursor: pointer; text-decoration: none;
}
.tombol:hover { border-color: var(--teks-2); }
.tombol.utama { background: var(--aksen); border-color: var(--aksen); color: #fff; }
@media (prefers-color-scheme: dark) { .tombol.utama { color: #1a0d07; } }
.tombol.utama:hover { filter: brightness(1.05); }
.tombol.kecil { padding: 6px 10px; font-size: 14px; }
.baris-tombol { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }

label { font-size: 14px; font-weight: 600; color: var(--teks-2); display: block; margin-bottom: 4px; }
input, select {
  width: 100%; font: inherit; font-size: 15px; color: var(--teks); background: var(--latar);
  border: 1px solid var(--garis); border-radius: 8px; padding: 8px 10px;
  font-variant-numeric: tabular-nums;
}
input:disabled, select:disabled { opacity: .45; cursor: not-allowed; }
input:focus, select:focus { outline: 2px solid var(--aksen); outline-offset: 1px; border-color: transparent; }
input[type="checkbox"] { width: auto; }
.isian-kisi { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.isian-kisi + h3 { margin-top: 1.6em; }
.centang { display: flex; align-items: center; gap: 8px; font-weight: 600; color: var(--teks-2); font-size: 14px; }

/* Tabel */
.tabel-gulir { position: relative; overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--garis); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-size: 15px; font-variant-numeric: tabular-nums; }
th, td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--garis); white-space: nowrap; }
th { background: var(--permukaan-2); font-weight: 700; font-size: 14px; }
tr:last-child td { border-bottom: 0; }
td.angka, th.angka { text-align: right; }
tfoot td { font-weight: 700; background: var(--permukaan-2); }
.tabel-lapisan input { min-width: 76px; padding: 6px 8px; }
.tabel-lapisan select { min-width: 118px; padding: 6px 8px; }
.tabel-lapisan td { padding: 6px 8px; }

/* Kalkulator */
.tata-kalk { display: grid; gap: 24px; grid-template-columns: minmax(0, 1fr) 300px; align-items: start; }
.tata-kalk > * { min-width: 0; }
@media (max-width: 880px) { .tata-kalk { grid-template-columns: minmax(0, 1fr); } .tata-kalk aside { position: static !important; } }
.profil-svg { width: 100%; height: auto; display: block; }
.ringkasan { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin: 16px 0; }
.ringkasan .kartu { padding: 18px; }
.nilai-besar { font-size: 34px; font-weight: 800; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.nilai-besar small { font-size: 16px; font-weight: 600; color: var(--teks-2); }

.langkah { border-left: 3px solid var(--aksen); padding: 4px 0 4px 16px; margin: 18px 0; }
.langkah h4 { margin: 0 0 6px; font-size: 16px; }
.rumus { overflow-x: auto; overflow-y: hidden; padding: 4px 0; }
@media (max-width: 520px) { .rumus .katex-display { font-size: .82em; } .rumus .katex-display > .katex { text-align: left; } }
.ket { font-size: 14px; color: var(--teks-2); }

.catatan {
  background: var(--peringatan-latar); color: var(--peringatan); border-radius: 10px;
  padding: 12px 14px; font-size: 14px; margin: 10px 0;
}
.catatan.galat { background: var(--aksen-lembut); color: var(--aksen); }

.batang { height: 14px; border-radius: 4px; background: var(--aksen); }
.batang.b2 { background: var(--teks-2); }

footer { border-top: 1px solid var(--garis); margin-top: 64px; padding: 28px 0 40px; font-size: 14px; color: var(--teks-2); }

.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

@media print {
  .nav, .tidak-cetak, footer { display: none !important; }
  body { background: #fff; color: #000; }
  .kartu { box-shadow: none; }
  .tata-kalk { grid-template-columns: 1fr; }
}

/* Beranda */
.pahlawan-beranda { display: grid; gap: 32px; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); align-items: center; }
.pahlawan-beranda .ilustrasi { width: 100%; max-width: 340px; justify-self: center; }
@media (max-width: 720px) { .pahlawan-beranda { grid-template-columns: minmax(0, 1fr); } .pahlawan-beranda .ilustrasi { max-width: 220px; } }

/* Rincian alat */
.rincian { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 10px 0 0; font-size: 14px; }
.rincian dt { font-weight: 700; color: var(--teks-2); }
.rincian dd { margin: 0; }

/* Halaman tulisan (dibangun dari konten/) */
.prosa { max-width: 760px; margin: 0 auto; padding: 40px 0 8px; }
.prosa h1 { font-size: clamp(30px, 5vw, 44px); margin-bottom: .6em; }
.prosa h2 { font-size: clamp(21px, 3vw, 26px); }
.prosa h3 { font-size: 18px; }
.prosa p, .prosa li { line-height: 1.75; }
.prosa ul, .prosa ol { padding-left: 1.3em; }
.prosa li { margin: .25em 0; }
.prosa table { margin: 1em 0 1.4em; display: block; overflow-x: auto; border: 1px solid var(--garis); border-radius: 10px; }
.prosa th, .prosa td { white-space: normal; min-width: 120px; vertical-align: top; }
.prosa code { background: var(--permukaan-2); border-radius: 5px; padding: 1px 5px; font-size: .92em; }
.prosa pre { background: var(--permukaan-2); border-radius: 10px; padding: 14px 16px; overflow-x: auto; }
.prosa pre code { background: none; padding: 0; }
.prosa blockquote { margin: 1em 0; padding: 4px 0 4px 16px; border-left: 3px solid var(--aksen); color: var(--teks-2); }
.prosa em:only-child { color: var(--teks-2); }
.remah { font-size: 14px; margin-bottom: 18px; }
.remah a { text-decoration: none; }
.berikut { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--garis); }
.kisi-2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr)); }

/* Praktikum: tabel isian seperti lembar data */
.tabel-isian td { padding: 5px 8px; vertical-align: middle; }
.tabel-isian td:first-child { white-space: normal; min-width: 190px; font-size: 14px; }
.tabel-isian td:nth-child(2), .tabel-isian td:nth-child(3) { color: var(--teks-2); font-size: 14px; }
.tabel-isian input { min-width: 92px; padding: 6px 8px; text-align: right; }
.tabel-isian input.nama-kolom { font-weight: 700; text-align: center; background: transparent; border-color: transparent; }
.tabel-isian input.nama-kolom:hover, .tabel-isian input.nama-kolom:focus { border-color: var(--garis); background: var(--latar); }
.tabel-isian select { min-width: 110px; }
#formulir-praktikum h3 { margin-top: 1.4em; }
#formulir-praktikum > h3:first-of-type { margin-top: .8em; }
.identitas { border: 1px solid var(--garis); border-radius: 10px; padding: 10px 14px; margin-bottom: 18px; background: var(--latar); }
.identitas summary { cursor: pointer; font-weight: 700; font-size: 14px; color: var(--teks-2); }
.grafik { width: 100%; height: auto; display: block; }
.grafik-bingkai { margin: 16px 0; padding: 14px; }
.grafik-bingkai figcaption { margin-top: 8px; }
.kartu-menyusul { opacity: .62; box-shadow: none; border-style: dashed; }
.fitur .kartu h3 { margin-top: 0; }
.hanya-cetak { display: none; }
.kop td { border: 0; padding: 2px 10px 2px 0; font-size: 13px; }

@media print {
  .hanya-cetak { display: block; margin-bottom: 12px; }
  .identitas, .pahlawan .remah { display: none !important; }
  .tabel-isian input { border: 0; padding: 0; background: none; }
  .grafik-bingkai { break-inside: avoid; }
  .langkah, table { break-inside: avoid; }
}

/* Kolom pertama tabel praktikum menempel saat tabel digeser di layar sempit */
#alat-praktikum .tabel-gulir td:first-child, #alat-praktikum .tabel-gulir th:first-child {
  position: sticky; left: 0; z-index: 1; background: var(--permukaan);
}
#alat-praktikum .tabel-gulir thead th:first-child { background: var(--permukaan-2); }
@media (max-width: 560px) {
  #alat-praktikum table { font-size: 13.5px; }
  #alat-praktikum .tabel-gulir td:first-child { min-width: 140px; max-width: 170px; white-space: normal; }
  .tabel-isian td:first-child { min-width: 140px; }
  .tabel-isian input { min-width: 78px; }
}

/* Praktikum: tabel daftar, hasil antaralat, langkah bernomor */
.tabel-daftar td:first-child, .tabel-daftar th:first-child { min-width: 0 !important; width: 1%; text-align: center; color: var(--teks-2); font-size: 13px; }
.tabel-daftar th { font-size: 13px; line-height: 1.35; vertical-align: bottom; }
.tabel-daftar input { min-width: 78px; }
.tabel-daftar input.teks { min-width: 180px; text-align: left; }
.tabel-daftar select { min-width: 130px; padding: 6px 8px; }
.impor { border: 1px dashed var(--garis); border-radius: 10px; padding: 10px 14px; margin-bottom: 18px; }
.tautan-kecil { display: inline-block; margin-top: 5px; padding: 0; border: 0; background: none; color: var(--aksen); font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; text-align: left; text-decoration: underline; text-underline-offset: 3px; }
.langkah-daftar { padding-left: 1.3em; }
.langkah-daftar li { margin: .35em 0; line-height: 1.6; }
@media (max-width: 560px) {
  #alat-praktikum .ringkasan { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  #alat-praktikum .ringkasan .kartu { padding: 13px; }
  #alat-praktikum .nilai-besar { font-size: 25px; }
}
.kisi-grafik { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); }
.kisi-grafik .grafik-bingkai { margin: 0; }
.kisi-grafik.kisi-3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); }

/* Pencarian */
.hasil-cari li { padding: 12px 0; border-bottom: 1px solid var(--garis, #ddd); }
.hasil-cari p { margin: 4px 0 0; }
#kataCari { width: 100%; }
.status-sumber { font-size: .95rem; margin: 10px 0 0; }
.status-sumber[data-status="belum"] strong { color: var(--aksen); }
.lapor { margin-top: 40px; }