/* Kalkulator-PCB.my — one stylesheet. Every background colour is paired with an explicit text colour
   that meets WCAG AA; the pairs are listed in docs/design.md. */

@font-face {
  font-family: "IBM Plex Sans";
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("/fonts/ibm-plex-sans-latin.woff2") format("woff2");
}
@font-face {
  font-family: "Archivo";
  font-style: normal;
  font-weight: 600 800;
  font-display: swap;
  src: url("/fonts/archivo-latin.woff2") format("woff2");
}

:root {
  --latar: #f5f7fb;
  --kad: #ffffff;
  --teks: #16213a;
  --teks-2: #55607a;
  --garis: #d7dde8;
  --garis-2: #8a95ad;
  --biru: #1f3b73;
  --biru-2: #152b55;
  --biru-latar: #eef3fb;
  --biru-kepala: #e9eef7;
  --hijau: #0b6e4f;
  --hijau-latar: #e6f4ee;
  --kuning: #ffd166;
  --kuning-latar: #ffe8a3;
  --amber: #d98c00;
  --amber-latar: #fff4e5;
  --putih: #ffffff;
  --tajuk: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --badan: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --sempit: 44rem;
  --luas: 68rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--latar);
  color: var(--teks);
  font-family: var(--badan);
  font-size: 1.0625rem;
  line-height: 1.65;
  font-variant-numeric: tabular-nums;
}
img, svg { max-width: 100%; }
a { color: var(--biru); text-underline-offset: 0.15em; }
a:hover { color: var(--biru-2); }
a:focus-visible, button:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid var(--amber); outline-offset: 2px; }
h1, h2, h3 { font-family: var(--tajuk); color: var(--biru-2); line-height: 1.15; margin: 0 0 0.5em; font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.9rem, 1.3rem + 2.2vw, 2.8rem); font-weight: 800; }
h2 { font-size: clamp(1.4rem, 1.1rem + 1.1vw, 1.85rem); margin-top: 2.2em; }
h3 { font-size: 1.15rem; margin-top: 1.6em; }
p, ul, ol { margin: 0 0 1.1em; }
li { margin-bottom: 0.4em; }
strong, b { font-weight: 700; }
table { border-collapse: collapse; width: 100%; margin: 0 0 1.4em; font-size: 0.97rem; }
th, td { text-align: left; padding: 0.55em 0.7em; border-bottom: 1px solid var(--garis); vertical-align: top; }
th { background: var(--biru-kepala); color: var(--biru-2); font-weight: 700; }
td.angka, th.angka { text-align: right; }
.jadual-skrol { overflow-x: auto; margin: 0 0 1.4em; }
.jadual-skrol table { margin: 0; }
code, .formula { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.95em; }
.formula { display: block; background: var(--kad); color: var(--teks); border: 1px solid var(--garis); border-radius: 10px; padding: 0.9rem 1.1rem; margin: 0 0 1.2em; overflow-x: auto; white-space: pre-wrap; line-height: 1.6; }
.wrap { width: min(100% - 2rem, var(--luas)); margin-inline: auto; }
.wrap-sempit { width: min(100% - 2rem, var(--sempit)); margin-inline: auto; }
.label-jenis { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--hijau); margin: 0 0 0.5rem; }
.kecil { font-size: 0.9rem; color: var(--teks-2); }

/* Skip link, notice strip, header */
.skip { position: absolute; left: -999px; top: -999px; display: inline-flex; align-items: center; min-height: 44px; background: var(--biru-2); color: var(--putih); padding: 0.6rem 1rem; z-index: 10; }
.skip:focus { left: 1rem; top: 1rem; }
.notis { background: var(--biru-2); color: #e8edf7; font-size: 0.9rem; padding: 0.5rem 0; text-align: center; }
.atas { background: var(--kad); border-bottom: 1px solid var(--garis); }
.atas .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1.5rem; padding: 0.7rem 0; }
.jenama { display: inline-flex; align-items: center; gap: 0.6rem; min-height: 44px; font-family: var(--tajuk); font-weight: 800; font-size: 1.3rem; color: var(--biru-2); text-decoration: none; }
.jenama:hover { color: var(--biru); }
.tanda { flex: none; }
.menu { display: flex; gap: 0.6rem; overflow-x: auto; max-width: 100%; -webkit-overflow-scrolling: touch; scrollbar-width: none; padding-bottom: 2px; }
.menu::-webkit-scrollbar { display: none; }
.menu a { display: inline-flex; align-items: center; min-height: 44px; white-space: nowrap; color: var(--teks); text-decoration: none; padding: 0 0.85rem; border-radius: 10px; font-weight: 600; font-size: 0.95rem; }
.menu a:hover { background: var(--biru-latar); color: var(--biru-2); }
.menu a[aria-current="page"] { background: var(--biru); color: var(--putih); }
@media (min-width: 56rem) { .atas .wrap { flex-wrap: nowrap; } .menu { margin-left: auto; } }

/* Reading column */
.kandungan { width: min(100% - 2rem, var(--sempit)); margin-inline: auto; padding: 1.2rem 0 3rem; }
.breadcrumb { font-size: 0.9rem; color: var(--teks-2); margin-bottom: 0.6rem; }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 0 0.6rem; margin: 0; padding: 0; }
.breadcrumb li { display: inline-flex; align-items: center; margin: 0; }
.breadcrumb li + li::before { content: "›"; margin-right: 0.6rem; color: var(--teks-2); }
.breadcrumb a { display: inline-flex; align-items: center; min-height: 44px; color: var(--teks-2); }
.breadcrumb a[aria-current="page"] { color: var(--teks); text-decoration: none; }
.panduan-kepala { margin-bottom: 1.4rem; }
/* Inline links get a 44px tap area without moving the text: vertical padding cancelled by negative margins. */
.panduan p a, .intipati a, .jawapan a, .byline a, .bantu a, .keputusan p a, .bawah-nota a, .pengantar a { display: inline-block; padding-block: 0.75rem; margin-block: -0.75rem; }
.byline { color: var(--teks-2); font-size: 0.93rem; margin: 0; }
.byline a { color: var(--teks-2); }

/* Quick answer, table of contents */
.intipati { background: var(--hijau-latar); color: var(--teks); border-left: 5px solid var(--hijau); border-radius: 0 10px 10px 0; padding: 1rem 1.2rem 0.4rem; margin: 0 0 1.6rem; }
.intipati p, .intipati li { color: var(--teks); }
.intipati-label { color: var(--hijau); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.78rem; margin-bottom: 0.4rem; }
.isi { background: var(--kad); color: var(--teks); border: 1px solid var(--garis); border-radius: 10px; padding: 0.9rem 1.2rem 0.5rem; margin: 0 0 1.8rem; font-size: 0.95rem; }
.isi-tajuk { font-weight: 700; color: var(--biru-2); margin-bottom: 0.3rem; }
.isi ol { margin: 0 0 0.3rem; padding-left: 1.3rem; }
.isi li { margin: 0; }
.isi a { display: flex; align-items: center; min-height: 44px; color: var(--teks); }

/* Callouts, examples, steps */
.nota { border-radius: 10px; padding: 0.9rem 1.1rem 0.3rem; margin: 0 0 1.4rem; border: 1px solid var(--garis); border-left: 5px solid var(--biru); background: var(--biru-latar); color: var(--teks); }
.nota p, .nota li { color: var(--teks); }
.nota-awas { background: var(--amber-latar); border-left-color: var(--amber); }
.nota-rasmi { background: var(--kad); border-left-color: var(--biru-2); font-style: italic; }
.nota-label { font-style: normal; font-weight: 700; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--biru-2); margin-bottom: 0.3rem; }
.contoh { background: var(--kad); color: var(--teks); border: 1px solid var(--garis); border-radius: 10px; padding: 1rem 1.2rem 0.4rem; margin: 0 0 1.4rem; }
.contoh-label { font-weight: 700; color: var(--hijau); margin-bottom: 0.5rem; }
.langkah { list-style: none; counter-reset: langkah; padding: 0; margin: 0 0 1.6rem; }
.langkah > li { counter-increment: langkah; position: relative; padding: 0 0 1.2rem 3.2rem; margin: 0; border-left: 2px solid var(--garis); margin-left: 1.1rem; }
.langkah > li:last-child { border-left-color: transparent; padding-bottom: 0.3rem; }
.langkah > li::before { content: counter(langkah); position: absolute; left: -1.2rem; top: 0; width: 2.3rem; height: 2.3rem; border-radius: 8px; background: var(--biru); color: var(--putih); font-family: var(--tajuk); font-weight: 700; font-size: 1.1rem; display: flex; align-items: center; justify-content: center; }
.langkah h3 { margin: 0 0 0.35rem; padding-top: 0.25rem; }
.langkah-isi p:last-child { margin-bottom: 0; }

/* Official link button, calls to action */
.rasmi { display: inline-flex; align-items: center; gap: 0.8rem; background: var(--biru); color: var(--putih); text-decoration: none; padding: 0.55rem 1rem 0.55rem 1.1rem; border-radius: 10px; margin: 0.2rem 0 1.2rem; min-height: 44px; max-width: 100%; }
.rasmi:hover { background: var(--biru-2); color: var(--putih); }
.rasmi-teks { display: flex; flex-direction: column; line-height: 1.25; }
.rasmi-teks b { color: var(--putih); }
.rasmi-teks span { font-size: 0.8rem; color: #cfdbf2; }
.rasmi svg { flex: none; color: var(--kuning); }
.cta { background: var(--biru-2); color: #e8edf7; border-radius: 12px; padding: 1.2rem 1.4rem 0.4rem; margin: 1.8rem 0; }
.cta p { color: #e8edf7; }
.cta a { display: inline-flex; align-items: center; min-height: 44px; background: var(--kuning); color: var(--teks); padding: 0.5rem 1.1rem; border-radius: 10px; font-weight: 700; text-decoration: none; margin-bottom: 0.8rem; }
.cta a:hover { background: var(--kuning-latar); color: var(--teks); }

/* FAQ, sources, related */
.soalan-accordion { margin: 0 0 1.6rem; }
.soalan { border: 1px solid var(--garis); border-radius: 10px; background: var(--kad); color: var(--teks); margin-bottom: 0.6rem; }
.soalan summary { cursor: pointer; padding: 0.7rem 1rem; font-weight: 700; min-height: 44px; display: flex; align-items: center; color: var(--biru-2); list-style: none; }
.soalan summary::-webkit-details-marker { display: none; }
.soalan summary::after { content: "+"; margin-left: auto; font-family: var(--tajuk); font-size: 1.3rem; color: var(--biru); }
.soalan[open] summary::after { content: "–"; }
.jawapan { padding: 0 1rem 0.5rem; }
.sumber ul, .berkaitan ul { list-style: none; padding: 0; }
.sumber li { margin: 0; }
.sumber a { display: inline-flex; align-items: center; min-height: 44px; }
.berkaitan ul { display: grid; gap: 0.8rem; }
.berkaitan a { display: block; padding: 0.9rem 1rem; background: var(--kad); border: 1px solid var(--garis); border-radius: 10px; text-decoration: none; color: var(--teks); }
.berkaitan a:hover { border-color: var(--biru); }
.berkaitan b { display: block; color: var(--biru-2); margin-bottom: 0.2rem; }
.berkaitan span { color: var(--teks-2); font-size: 0.95rem; }

/* Footer */
.bawah { background: var(--biru-2); color: #d6deec; padding: 2rem 0 1.5rem; margin-top: 2rem; }
.bawah a { color: var(--kuning); }
.bawah-nota { color: #d6deec; font-size: 0.95rem; max-width: 60rem; }
.bawah-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 1.5rem; margin: 1.5rem 0; }
.bawah-tajuk { color: var(--putih); font-weight: 700; margin-bottom: 0.3rem; }
.bawah ul { list-style: none; padding: 0; margin: 0; }
.bawah li { margin: 0; }
.bawah li a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: none; }
.bawah li a:hover, .bawah li a[aria-current="page"] { text-decoration: underline; color: var(--putih); }
.hak { color: #aab6cc; font-size: 0.88rem; margin: 0; }

/* Home: opener and the calculator */
.pembuka { padding: 2rem 0 0.5rem; }
.pembuka .pengantar { font-size: 1.12rem; max-width: 52rem; }
.tarikh { color: var(--teks-2); font-size: 0.93rem; }
.kalk-seksyen { padding: 1rem 0 2rem; }
.kalk { display: grid; gap: 1.2rem; grid-template-columns: 1fr; }
@media (min-width: 60rem) { .kalk { grid-template-columns: 1.15fr 0.85fr; align-items: start; } .keputusan { position: sticky; top: 1rem; } }
.borang { background: var(--kad); color: var(--teks); border: 1px solid var(--garis); border-radius: 14px; padding: 1.2rem 1.3rem 0.6rem; }
fieldset { border: 0; padding: 0; margin: 0 0 1.4rem; min-width: 0; }
legend { font-family: var(--tajuk); font-weight: 700; color: var(--biru-2); font-size: 1.05rem; padding: 0; margin-bottom: 0.7rem; }
.medan { margin-bottom: 0.9rem; }
.medan label, .tanda-label { display: block; font-weight: 600; margin-bottom: 0.3rem; }
input[type="number"], select { width: 100%; min-height: 44px; padding: 0.5rem 0.7rem; border: 1px solid var(--garis-2); border-radius: 8px; font: inherit; color: var(--teks); background: var(--kad); }
input[type="number"] { font-variant-numeric: tabular-nums; }
.bantu { font-size: 0.88rem; color: var(--teks-2); margin: 0.3rem 0 0; }
.dua { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; }
@media (max-width: 30rem) { .dua { grid-template-columns: 1fr; } }
.tanda { position: relative; display: flex; align-items: center; gap: 0.75rem; min-height: 44px; padding-left: 2.2rem; cursor: pointer; font-weight: 600; margin-bottom: 0.3rem; }
.tanda input { position: absolute; left: 0; top: 0; width: 44px; height: 44px; margin: 0; opacity: 0; cursor: pointer; }
.tanda::before { content: ""; position: absolute; left: 0.4rem; top: 50%; transform: translateY(-50%); width: 1.4rem; height: 1.4rem; border: 2px solid var(--biru); border-radius: 6px; background: var(--kad); }
.tanda:has(input:checked)::before { background: var(--biru); box-shadow: inset 0 0 0 3px var(--kad); }
.tanda:has(input:focus-visible)::before { outline: 3px solid var(--amber); outline-offset: 2px; }
.tanda small { font-weight: 400; color: var(--teks-2); }
.collapse-lanjutan[hidden], .collapse-pasangan[hidden] { display: none; }
.butang-baris { display: flex; gap: 0.8rem; flex-wrap: wrap; margin: 0.4rem 0 0.8rem; }
.butang { min-height: 48px; padding: 0.6rem 1.3rem; border-radius: 10px; font: inherit; font-weight: 700; cursor: pointer; }
.butang-utama { background: var(--biru); color: var(--putih); border: 0; }
.butang-utama:hover { background: var(--biru-2); }
.butang-kedua { background: var(--kad); color: var(--biru); border: 2px solid var(--biru); }
.butang-kedua:hover { background: var(--biru-latar); }
.keputusan { background: var(--biru-2); color: #e8edf7; border-radius: 14px; padding: 1.3rem 1.4rem; }
.keputusan h2 { color: var(--putih); margin-top: 0; font-size: 1.3rem; }
.keputusan h3 { color: var(--putih); font-size: 1rem; margin-top: 1.4em; }
.keputusan p, .keputusan li { color: #e8edf7; }
.keputusan a { color: var(--kuning); }
.keputusan .kecil { color: #b9c6e0; }
.angka-besar { font-family: var(--tajuk); font-size: clamp(2.2rem, 1.5rem + 3vw, 3.4rem); font-weight: 800; color: var(--putih); margin: 0.1rem 0 0.2rem; line-height: 1.1; }
.keputusan table { color: #e8edf7; font-size: 0.95rem; }
.keputusan th, .keputusan td { border-color: #2d4470; background: transparent; color: #e8edf7; padding: 0.45em 0.5em; }
.keputusan th { color: var(--putih); }
.keputusan .jumlah td, .keputusan .jumlah th { color: var(--kuning); font-weight: 700; border-top: 2px solid #2d4470; }
.jalan-kerja { padding-left: 1.2rem; font-size: 0.95rem; }
.jalan-kerja li { margin-bottom: 0.55rem; }
.jalan-kerja .f { display: block; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 0.9em; color: var(--putih); background: #223a66; border-radius: 6px; padding: 0.25rem 0.5rem; margin-top: 0.2rem; overflow-x: auto; }
.keputusan .amaran { background: #223a66; color: var(--putih); border-radius: 8px; padding: 0.6rem 0.8rem; }
.keputusan noscript p { background: var(--kuning-latar); color: var(--teks); border-radius: 8px; padding: 0.7rem 0.9rem; }

/* Home sections */
.seksyen { padding: 0.5rem 0 1rem; }
.seksyen .wrap-sempit h2:first-child { margin-top: 1.2em; }
.kad-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1rem; list-style: none; padding: 0; margin: 0 0 1.5rem; }
.kad { background: var(--kad); color: var(--teks); border: 1px solid var(--garis); border-radius: 12px; padding: 1rem 1.1rem 0.6rem; margin: 0; }
.kad h3 { margin-top: 0; font-size: 1.05rem; }
.kad p { color: var(--teks-2); font-size: 0.95rem; }
.kad .pautan { display: inline-flex; align-items: center; min-height: 44px; font-weight: 600; }
.jadual-kecil th, .jadual-kecil td { font-size: 0.93rem; }
.lajur-dua { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1rem 2rem; }
.lajur-dua ul { margin-top: 0; }

@media (max-width: 40rem) {
  table { font-size: 0.86rem; }
  th, td { padding: 0.45em 0.4em; }
  .keputusan th, .keputusan td { padding: 0.4em 0.3em; }
}

/* 404 */
.ralat { text-align: center; padding: 3rem 0; }
.ralat ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 0.8rem; }
.ralat li { margin: 0; }
.ralat li a { display: inline-flex; align-items: center; min-height: 44px; padding: 0 1rem; border: 1px solid var(--garis); border-radius: 10px; background: var(--kad); color: var(--biru-2); text-decoration: none; }

@media print {
  .notis, .atas, .bawah, .skip, .butang-baris { display: none; }
  body { background: #fff; color: #000; }
  .keputusan { background: #fff; color: #000; border: 1px solid #000; }
  .keputusan h2, .keputusan h3, .keputusan p, .keputusan li, .keputusan th, .keputusan td, .angka-besar { color: #000; }
}