/* Bahasa desain: Transport for Jakarta (sama dengan proyek Rambu Maker).
   Krem sebagai dasar, kartu putih bersudut 25px, tombol pil, aksen lime dengan teks biru.
   Tanpa bayangan dan tanpa garis tepi; pembeda area memakai warna isian.
   Sentence case, tanpa letter-spacing. Font PT Sans (400 dan 700). */
:root {
  --blue: #18549c;
  --navy: #14293d;
  --ink: #00162b;
  --muted: #5a6a7a;
  --lime: #e8ec14;
  --lime-hover: #d9dd0f;
  --cream: #fcf9ee;
  --tint: #ecf4fc;
  --tint-2: #dbe8f6;
  --red: #e4002b;
  --page-navy: #00152b;
  --navy-raised: #12304f;
  --card: #ffffff;
  --ground: #e4ecf5;
  --bg: var(--cream);
  --r-card: 25px;
  --r-tile: 20px;
  --r-chip: 10px;
  --r-pill: 500px;
  --gutter: 20px;
  --wrap: 1280px;
}
:root[data-theme="dark"] {
  --page-navy: #000d1a;
  --bg: #00152b;
  --card: #0b2540;
  --navy: #e4ecf5;
  --ink: #ffffff;
  --muted: #9fb4cc;
  --tint: #123254;
  --tint-2: #1b4470;
  --ground: #0f2d4d;
  --navy-raised: #0b2540;
  --blue: #7db4f0;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page-navy: #000d1a; --bg: #00152b; --card: #0b2540; --navy: #e4ecf5; --ink: #fff;
    --muted: #9fb4cc; --tint: #123254; --tint-2: #1b4470; --ground: #0f2d4d; --navy-raised: #0b2540; --blue: #7db4f0;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 90px; }
body { margin: 0; font-family: "PT Sans", system-ui, sans-serif; font-size: 16px; line-height: 1.55; color: var(--navy); background: var(--bg); }
h1, h2, h3, h4 { font-weight: 700; margin: 0; line-height: 1.15; color: var(--ink); letter-spacing: normal; text-transform: none; }
h1 { font-size: clamp(34px, 5vw, 56px); }
h2 { font-size: clamp(26px, 3vw, 34px); }
h3 { font-size: 20px; }
h4 { font-size: 16px; }
p { margin: 0 0 12px; }
a { color: var(--blue); }
img, svg { max-width: 100%; }
button, input, select { font: inherit; color: inherit; }
button { border: 0; background: var(--tint); color: var(--navy); border-radius: var(--r-pill); padding: 8px 16px; cursor: pointer; font-weight: 700; transition: background .15s; }
button:hover { background: var(--tint-2); }
button.on { background: var(--blue); color: #fff; }
:root[data-theme="dark"] button.on { color: #00152b; }
input, select { border: 0; border-radius: var(--r-chip); padding: 9px 12px; background: var(--tint); min-width: 0; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 22px; border-radius: var(--r-pill); font-weight: 700; text-decoration: none; background: var(--tint); color: var(--navy); border: 0; cursor: pointer; }
.btn:hover { background: var(--tint-2); }
.btn.cta { background: var(--lime); color: #18549c; }
.btn.cta:hover { background: var(--lime-hover); }
.btn.dark { background: var(--navy-raised); color: #fff; }
.btn.dark:hover { background: #1b4470; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; z-index: 99; background: var(--lime); color: var(--blue); padding: 8px 14px; border-radius: var(--r-pill); }

/* ---------- Header ---------- */
.site-head { position: sticky; top: 0; z-index: 30; background: var(--page-navy); color: #fff; }
.head-in { max-width: var(--wrap); margin: 0 auto; padding: 12px 28px; display: flex; align-items: center; gap: 14px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: #fff; }
.brand b { font-size: 18px; line-height: 1.1; display: block; }
.brand small { color: #9fb4cc; font-size: 11px; display: block; }
.logo { width: 38px; height: 38px; border-radius: 12px; background: var(--navy-raised); display: grid; place-items: center; flex: none; }
.logo svg { width: 20px; height: 20px; fill: var(--lime); }
.spacer { flex: 1; }
.main-nav { display: flex; gap: 4px; }
.main-nav a { color: #cfe0f4; text-decoration: none; padding: 8px 14px; border-radius: var(--r-pill); font-weight: 700; font-size: 14px; white-space: nowrap; }
.main-nav a:hover { background: var(--navy-raised); color: #fff; }
.main-nav a.on { background: var(--lime); color: #18549c; }
.icon-btn { width: 38px; height: 38px; padding: 0; display: grid; place-items: center; background: var(--navy-raised); color: #fff; }
.icon-btn:hover { background: #1b4470; }
.icon-btn svg { width: 18px; height: 18px; }
.menu-btn { display: none; }
.search-wrap { position: relative; }
.search-wrap input { width: 230px; background: var(--navy-raised); color: #fff; border-radius: var(--r-pill); padding: 9px 16px 9px 38px; }
.search-wrap input::placeholder { color: #9fb4cc; }
.search-wrap > svg { position: absolute; left: 13px; top: 11px; width: 16px; height: 16px; fill: none; stroke: #9fb4cc; stroke-width: 2; pointer-events: none; }
.results { position: absolute; right: 0; top: 46px; width: min(420px, 90vw); max-height: 70vh; overflow: auto; background: var(--card); border-radius: var(--r-card); padding: 10px; display: none; color: var(--navy); }
.results.open { display: block; }
.results a { display: flex; align-items: center; gap: 12px; padding: 8px 12px; border-radius: var(--r-chip); text-decoration: none; color: var(--navy); }
.results a:hover, .results a:focus { background: var(--tint); }
.results img { width: 34px; height: 34px; flex: none; background: #0c1b2a; border-radius: 8px; }
.results small { color: var(--muted); display: block; }
.results .none { padding: 12px; color: var(--muted); }

/* ---------- Layout ---------- */
.shell { max-width: var(--wrap); margin: 0 auto; padding: var(--gutter) 28px 60px; display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: var(--gutter); align-items: start; }
.shell.no-side { grid-template-columns: minmax(0, 1fr); }
.side { position: sticky; top: 84px; background: var(--card); border-radius: var(--r-card); padding: 14px; max-height: calc(100vh - 100px); overflow: auto; }
.side h4 { color: var(--muted); font-size: 12px; font-weight: 700; padding: 6px 12px 8px; }
.side a { display: block; padding: 8px 14px; border-radius: var(--r-chip); text-decoration: none; color: var(--navy); font-size: 15px; }
.side a:hover { background: var(--tint); }
.side a.on { background: var(--blue); color: #fff; }
:root[data-theme="dark"] .side a.on { color: #00152b; }
.content { min-width: 0; display: grid; gap: var(--gutter); }
.card { background: var(--card); border-radius: var(--r-card); padding: 30px 34px; }
.card.tint { background: var(--tint); }
.card.navy { background: var(--page-navy); color: #fff; }
.card.navy h2, .card.navy h3 { color: #fff; }
.card.navy p { color: #cfe0f4; }
.card.lime { background: var(--lime); color: #00162b; }
.card.lime h2, .card.lime h3 { color: #00162b; }
.card > h2 { margin-bottom: 8px; }
.lede { color: var(--muted); font-size: 18px; max-width: 70ch; }
.card.navy .lede { color: #cfe0f4; }
.eyebrow { display: inline-block; background: var(--tint); color: var(--muted); font-weight: 700; font-size: 13px; padding: 3px 12px; border-radius: var(--r-chip); margin-bottom: 12px; }
.card.navy .eyebrow { background: var(--navy-raised); color: #9fb4cc; }
.grid { display: grid; gap: 14px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.mt { margin-top: 22px; }
.mt-s { margin-top: 12px; }
.sub { font-size: 20px; margin: 26px 0 10px; }
.sub:first-child { margin-top: 0; }
.note { background: var(--tint); border-radius: var(--r-tile); padding: 14px 18px; font-size: 15px; color: var(--navy); }
.note b { color: var(--ink); }
.pill { display: inline-block; background: var(--tint); color: var(--muted); font-size: 12px; font-weight: 700; padding: 2px 10px; border-radius: var(--r-pill); }
.pageref { color: var(--muted); font-size: 13px; }
.pageref a { color: var(--blue); font-weight: 700; }

/* ---------- Hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 34px; align-items: center; padding: 44px 44px; }
.hero h1 { color: #fff; margin-bottom: 16px; }
.hero h1 em { font-style: normal; color: var(--lime); }
.hero .btns { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-signs { display: grid; gap: 14px; }

/* ---------- Tiles & cards ---------- */
.part { display: flex; flex-direction: column; gap: 8px; text-decoration: none; background: var(--tint); border-radius: var(--r-tile); padding: 20px 22px; color: var(--navy); min-height: 150px; }
.part:hover { background: var(--tint-2); }
.part .num { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 700; }
:root[data-theme="dark"] .part .num { color: #00152b; }
.part b { font-size: 18px; color: var(--ink); line-height: 1.2; }
.part span { color: var(--muted); font-size: 14px; }
.stat { background: var(--tint); border-radius: var(--r-tile); padding: 16px 20px; }
.stat b { display: block; font-size: 30px; color: var(--ink); line-height: 1.1; }
.stat span { color: var(--muted); font-size: 14px; }

.swatch { border-radius: var(--r-tile); overflow: hidden; background: var(--tint); display: flex; flex-direction: column; text-align: left; padding: 0; font-weight: 400; cursor: pointer; }
.swatch:hover { background: var(--tint-2); }
.swatch .chip { height: 86px; margin: 6px 6px 0; border-radius: 14px; }
.swatch .txt { padding: 8px 14px 12px; }
.swatch b { display: block; color: var(--ink); }
.swatch small { color: var(--muted); display: block; font-size: 12px; line-height: 1.35; }
.swatch code { font-family: inherit; font-weight: 700; color: var(--blue); }

/* Tabel */
table { border-collapse: separate; border-spacing: 0 6px; width: 100%; }
th { text-align: left; font-size: 13px; color: var(--muted); padding: 4px 14px; font-weight: 700; }
td { background: var(--tint); padding: 10px 14px; }
td:first-child { border-radius: var(--r-chip) 0 0 var(--r-chip); }
td:last-child { border-radius: 0 var(--r-chip) var(--r-chip) 0; }
.tbl-wrap { overflow-x: auto; }

/* ---------- Rambu contoh (modul x) ---------- */
.sign { --m: calc(2 * var(--x)); --ar: calc(4 * var(--x)); --gap: calc(2 * var(--x)); display: flex; align-items: center; gap: var(--gap); padding: var(--m); border-radius: 6px; position: relative; width: max-content; max-width: 100%; font-family: "PT Sans", sans-serif; }
.sign .arrow { width: var(--ar); height: var(--ar); flex: none; fill: currentColor; }
.sign .tx { display: flex; flex-direction: column; }
.sign .id { font-weight: 700; font-size: calc(3 * var(--x)); line-height: 1.15; white-space: nowrap; }
.sign .en { font-weight: 400; font-size: calc(2 * var(--x)); line-height: 1.15; white-space: nowrap; }
.sign .ic { width: var(--ar); height: var(--ar); flex: none; }
.sign.right { flex-direction: row-reverse; text-align: right; }
.sign.right .tx { align-items: flex-end; }
.sign.guides { background-image: none; }
.sign.guides::before { content: ""; position: absolute; inset: var(--m); outline: 1px dashed currentColor; opacity: .55; pointer-events: none; }
.sign.guides::after { content: ""; position: absolute; inset: 0; border: 1px solid currentColor; opacity: .25; pointer-events: none; border-radius: 6px; }
.sign.guides .arrow { outline: 1px solid #e4002b; }
.sign.guides .ic { outline: 1px solid #e4002b; }
.sign-stage { background: var(--ground); border-radius: var(--r-tile); padding: 26px; display: grid; gap: 14px; place-items: center; overflow: auto; }
.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 14px; }
.controls label { font-weight: 700; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.controls input[type=range] { padding: 0; background: transparent; accent-color: var(--blue); width: 160px; }

/* Panah */
.arrow-tile { background: var(--tint); border-radius: var(--r-tile); padding: 12px 6px 10px; text-align: center; font-size: 12px; color: var(--muted); }
.arrow-tile svg { width: 44px; height: 44px; fill: var(--navy); display: block; margin: 4px auto 6px; }
.arrow-tile .p { background: #0c1b2a; border-radius: 12px; margin: 0 6px; padding: 12px 0; }
.arrow-tile .p svg { fill: #fff; margin: 0 auto; }

/* Badge layanan */
.badge-row { display: flex; align-items: center; gap: 12px; background: var(--tint); border-radius: var(--r-tile); padding: 10px 16px; }
.badge-row .t { min-width: 0; }
.badge-row b { display: block; color: var(--ink); font-size: 15px; line-height: 1.2; }
.badge-row small { color: var(--muted); font-size: 12px; }
.bdg { width: 44px; height: 44px; border-radius: 50%; flex: none; display: grid; place-items: center; font-weight: 700; font-size: 18px; color: #fff; }
.bdg.rail { background: #fff; border: 5px solid; color: #0c1b2a; font-size: 15px; }
.bdg.wide { border-radius: 14px; font-size: 13px; }
.code-demo { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.code-demo .plus { color: var(--muted); font-weight: 700; }

/* Tipografi */
.specimen { font-size: 28px; line-height: 1.25; word-break: break-all; }
.spec-card { background: var(--tint); border-radius: var(--r-tile); padding: 20px 24px; }
.spec-card small { color: var(--muted); font-weight: 700; display: block; margin-bottom: 4px; }

/* Katalog ikon */
.catalog-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 12px; }
.catalog-bar input { flex: 1; min-width: 200px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.chip-row button { padding: 5px 13px; font-size: 13px; }
.count { color: var(--muted); font-size: 14px; margin: 0 0 12px; }
.icon-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 10px; }
.icon-cell { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 12px 6px 10px; border-radius: var(--r-tile); background: var(--tint); font-weight: 400; text-align: center; font-size: 12px; line-height: 1.25; }
.icon-cell img { width: 62px; height: 62px; display: block; border-radius: 10px; background: #0c1b2a; object-fit: contain; }
.icon-cell small { color: var(--muted); }
.icon-cell b { color: var(--ink); }
.icon-grid-sm { display: grid; grid-template-columns: repeat(auto-fill, minmax(84px, 1fr)); gap: 8px; }
.icon-grid-sm .icon-cell img { width: 52px; height: 52px; }

/* Kartu tipe rambu */
.sign-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.sign-card { display: flex; flex-direction: column; text-align: left; align-items: stretch; padding: 8px 8px 12px; background: var(--tint); border-radius: var(--r-tile); font-weight: 400; gap: 4px; }
.sign-card:hover { background: var(--tint-2); }
.sign-card .pv { height: 96px; border-radius: 14px; display: grid; place-items: center; overflow: hidden; padding: 8px; }
.sign-card b { padding: 6px 8px 0; color: var(--ink); line-height: 1.2; }
.sign-card small { padding: 0 8px; color: var(--muted); font-size: 12px; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; vertical-align: 0; }

/* Modal */
dialog { border: 0; padding: 0; border-radius: var(--r-card); background: var(--card); color: var(--navy); width: min(920px, 94vw); max-height: 92vh; overflow: auto; }
dialog::backdrop { background: rgba(0, 21, 43, .7); }
.modal-in { padding: 28px 30px; }
.modal-head { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 14px; }
.modal-head h3 { flex: 1; font-size: 24px; }
.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin: 14px 0; }
.kv div { background: var(--tint); border-radius: var(--r-chip); padding: 10px 14px; }
.kv small { display: block; color: var(--muted); font-size: 12px; }
.kv b { color: var(--ink); }
.page-fig { background: var(--ground); border-radius: var(--r-tile); padding: 10px; }
.page-fig img { width: 100%; height: auto; display: block; border-radius: 12px; background: #fff; }
.fig { margin: 0; background: var(--ground); border-radius: var(--r-tile); padding: 10px; }
.fig img { width: 100%; height: auto; display: block; border-radius: 12px; background: #fff; }
.fig figcaption { font-size: 13px; color: var(--muted); padding: 8px 6px 2px; }
.icon-big { display: grid; place-items: center; background: #0c1b2a; border-radius: var(--r-tile); padding: 24px; }
.icon-big img { width: 160px; height: 160px; }

/* Diagram */
.diagram { background: var(--ground); border-radius: var(--r-tile); padding: 14px; }
.diagram svg { width: 100%; height: auto; display: block; }
.diagram text { font-family: "PT Sans", sans-serif; fill: var(--navy); }

.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; align-items: stretch; }
.calc .out { background: var(--lime); color: #00162b; border-radius: var(--r-tile); padding: 18px 22px; }
.calc .out b { font-size: 40px; line-height: 1.1; display: block; }

.toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(20px); background: var(--page-navy); color: #fff; padding: 10px 20px; border-radius: var(--r-pill); font-weight: 700; opacity: 0; pointer-events: none; transition: .2s; z-index: 60; }
.toast.show { opacity: 1; transform: translateX(-50%); }

footer { background: var(--page-navy); color: #cfe0f4; margin-top: 20px; }
footer .in { max-width: var(--wrap); margin: 0 auto; padding: 34px 28px; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; font-size: 14px; }
footer h4 { color: #fff; margin-bottom: 8px; }
footer a { color: #cfe0f4; display: block; padding: 2px 0; }
footer p { color: #9fb4cc; }

@media (max-width: 1000px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .side { position: static; max-height: none; display: flex; flex-wrap: wrap; gap: 4px; padding: 10px; }
  .side h4 { display: none; }
  .side a { padding: 6px 12px; background: var(--tint); border-radius: var(--r-pill); font-size: 14px; }
  .hero { grid-template-columns: 1fr; padding: 32px 26px; }
  .g4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .g3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .main-nav { position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: var(--page-navy); padding: 6px 20px 16px; display: none; }
  .main-nav.open { display: flex; }
  .menu-btn { display: grid; }
  .search-wrap input { width: 150px; }
  footer .in { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .head-in { padding: 10px 16px; }
  .shell { padding: 14px 16px 50px; }
  .card { padding: 22px 20px; }
  .g2, .g3, .g4, .calc { grid-template-columns: minmax(0, 1fr); }
  .brand small { display: none; }
  .search-wrap input { width: 110px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }