/* Lembar peta topografi: garis kontur cokelat, perairan biru, kartusi (kotak judul) sebagai kartu masuk */
:root {
  --paper: #eef2ef; --paper-2: #e3eae6; --ink: #13262e; --muted: #56676d; --line: #c9d4cf;
  --contour: #b47a45; --contour-idx: #94582a; --water: #1c4f6e; --water-soft: #d5e5ee; --veg: #5d8a4e;
  --card: #fbfcfb; --err: #a33a24; --focus: #1c4f6e;
  --font-d: 'Archivo', 'Arial Narrow', system-ui, sans-serif;
  --font-m: 'IBM Plex Mono', ui-monospace, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) { :root {
  --paper: #0e171b; --paper-2: #121e23; --ink: #e2ebe7; --muted: #92a5a6; --line: #263840;
  --contour: #6f5135; --contour-idx: #a7774a; --water: #7cb7db; --water-soft: #16303d; --veg: #87b674;
  --card: #111d22; --err: #f09a7f; --focus: #7cb7db; color-scheme: dark; } }
* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.5 var(--font-d); -webkit-font-smoothing: antialiased; }
.sheet { position: relative; min-height: 100%; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, 420px); grid-template-rows: 1fr auto; gap: 0 clamp(24px, 5vw, 72px);
  padding-block: clamp(28px, 6vh, 72px) 20px; padding-inline: clamp(16px, 6vw, 88px); overflow: hidden; }
.map { position: absolute; inset: 14px; border: 1.5px solid var(--ink); pointer-events: none; }
.map::after { content: ''; position: absolute; inset: 6px; border: 0.75px solid var(--ink); opacity: .55; }
#topo { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.ticks { position: absolute; font: 500 10.5px var(--font-m); color: var(--muted); letter-spacing: .02em; }
.ticks.top { top: -16px; left: 0; right: 0; height: 14px; }
.ticks.left { top: 0; bottom: 0; left: -2px; width: 0; }
.ticks span { position: absolute; white-space: nowrap; }
.ticks.top span { transform: translateX(-50%); }
.ticks.left span { transform: translate(-100%, -50%) rotate(-90deg); transform-origin: right center; left: 12px; }
.cursor { position: absolute; right: 12px; bottom: 10px; font: 500 11px var(--font-m); color: var(--muted); background: var(--paper); padding: 2px 6px; font-variant-numeric: tabular-nums; }

.intro { position: relative; align-self: center; max-width: 34rem; display: grid; gap: 18px; padding-block: 24px; }
.intro::before { content: ''; position: absolute; inset: -28px -40px; background: radial-gradient(closest-side, var(--paper) 62%, transparent); z-index: -1; }
.intro { isolation: isolate; }
.mark { display: flex; align-items: center; gap: 12px; }
.mark svg { width: 48px; height: 48px; flex: none; }
.m-bg { fill: var(--water); } .m-c1, .m-c2 { fill: none; stroke: #e9c27a; stroke-width: 2.6; stroke-linecap: round; } .m-c2 { opacity: .55; } .m-pt { fill: #fff; }
.mark div { display: grid; line-height: 1; }
.mark b { font: 800 22px var(--font-d); font-stretch: 125%; letter-spacing: .14em; }
.mark span { font: 500 11px var(--font-m); letter-spacing: .5em; color: var(--muted); margin-top: 4px; }
h1 { margin: 0; font: 700 clamp(30px, 4.4vw, 50px)/1.04 var(--font-d); font-stretch: 82%; letter-spacing: -.01em; text-wrap: balance; max-width: 15ch; }
.lead { margin: 0; color: var(--muted); font-size: 17px; max-width: 46ch; }
.legend { list-style: none; margin: 4px 0 0; padding: 12px 14px; display: grid; gap: 9px; border: 1px solid var(--line); background: color-mix(in srgb, var(--card) 82%, transparent); max-width: 23rem; }
.legend li { display: grid; grid-template-columns: 34px 1fr; align-items: center; gap: 10px; font-size: 14.5px; }
.legend i { height: 16px; display: block; }
.lg-ar { background: repeating-linear-gradient(135deg, var(--veg) 0 2px, transparent 2px 6px), color-mix(in srgb, var(--veg) 22%, transparent); border: 1.5px solid var(--veg); }
.lg-ln { height: 3px !important; background: var(--water); border-radius: 2px; box-shadow: 0 5px 0 -1px transparent; }
.lg-pt { width: 12px; height: 12px !important; border-radius: 50%; background: #b5452f; border: 2px solid var(--card); outline: 1px solid #b5452f; margin-left: 10px; }

.card { position: relative; align-self: center; background: var(--card); border: 1.5px solid var(--ink); box-shadow: 8px 8px 0 color-mix(in srgb, var(--ink) 12%, transparent); display: grid; }
.card header { padding: 18px 22px 14px; border-bottom: 1px solid var(--ink); display: grid; gap: 4px; }
.sheetno { font: 500 11px var(--font-m); letter-spacing: .12em; color: var(--muted); }
.card h2 { margin: 0; font: 700 30px var(--font-d); font-stretch: 112%; letter-spacing: .02em; }
form { padding: 20px 22px 8px; display: grid; gap: 16px; }
.fld { display: grid; gap: 6px; }
.fld > span:first-child { font-size: 12.5px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
input { font: 500 17px var(--font-d); color: var(--ink); background: var(--paper); border: 1px solid var(--line); border-bottom: 2px solid var(--ink); padding: 11px 12px; width: 100%; border-radius: 0; min-width: 0; }
input:focus { outline: none; border-color: var(--focus); border-bottom-color: var(--focus); background: var(--water-soft); }
.pw { display: flex; }
.pw input { flex: 1; }
.pw button { font: 600 13px var(--font-d); letter-spacing: .04em; color: var(--water); background: var(--paper); border: 1px solid var(--line); border-left: 0; border-bottom: 2px solid var(--ink); padding: 0 12px; cursor: pointer; }
.pw button:focus-visible, .go:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.caps { margin: -8px 0 0; font-size: 13px; color: var(--contour-idx); }
.err { margin: 0; padding: 9px 12px; border-left: 3px solid var(--err); background: color-mix(in srgb, var(--err) 10%, transparent); color: var(--err); font-size: 14.5px; }
.go { margin-top: 4px; display: flex; align-items: center; justify-content: space-between; gap: 12px; font: 700 17px var(--font-d); font-stretch: 112%; letter-spacing: .06em; text-transform: uppercase; color: #fff; background: var(--water); border: 0; padding: 14px 16px; cursor: pointer; transition: transform .12s ease, background .12s ease; }
.go svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; transition: transform .2s ease; }
.go:hover svg { transform: translateX(4px); }
.go:active { transform: translateY(1px); }
.go[disabled] { opacity: .7; cursor: progress; }
@media (prefers-color-scheme: dark) { .go { color: #0b1a24; } }
.card footer { padding: 14px 22px 18px; display: grid; gap: 4px; }
.scale { display: flex; width: 160px; height: 6px; border: 1px solid var(--ink); }
.scale i { flex: 1; } .scale i:nth-child(odd) { background: var(--ink); }
.scalelbl { display: flex; gap: 0; width: 100%; font: 500 10.5px var(--font-m); color: var(--muted); }
.scalelbl span:nth-child(1) { width: 0; } .scalelbl span:nth-child(2) { width: 160px; text-align: right; } .scalelbl span:nth-child(3) { margin-left: auto; }
.card footer p { margin: 8px 0 0; font-size: 13px; color: var(--muted); }
.foot { grid-column: 1 / -1; position: relative; margin: 18px 0 0; font: 500 11px var(--font-m); color: var(--muted); letter-spacing: .04em; }
@media (max-width: 860px) {
  .sheet { grid-template-columns: 1fr; grid-template-rows: auto auto auto; padding-block: 36px 20px; gap: 18px; }
  .intro { padding-block: 8px 0; }
  .legend { display: none; }
  h1 { font-size: 30px; }
  .lead { font-size: 15.5px; }
  .map { inset: 8px; }
  .ticks, .cursor { display: none; }
}
@media (prefers-reduced-motion: reduce) { .go, .go svg { transition: none; } }