/* Gaya Prediktor. Hanya font sistem, tanpa sumber eksternal. */
:root {
  --navy: #0A2540;
  --navy-2: #13365c;
  --gold: #F7B125;
  --gold-soft: #fff4d9;
  --bg: #f4f6fa;
  --card: #ffffff;
  --text: #13202f;
  --muted: #55657a;
  --line: #d9e0ea;
  --gd: #e5484d;
  --ga: #16a39a;
  --ok: #1d7a46;
  --warn: #9a5b00;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
/* Blok teks dwibahasa: hanya bahasa aktif yang tampil. */
html[lang="id"] [data-lang="en"], html[lang="en"] [data-lang="id"] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.45;
  color: var(--text);
  background: var(--bg);
}
body.present { font-size: 19px; }

a { color: var(--navy-2); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h2 { font-size: 1.15em; color: var(--navy); }
h3 { font-size: 1em; color: var(--navy); }
p { margin: .4em 0; }
.muted { color: var(--muted); font-size: .92em; }
.small { font-size: .85em; }

/* Kepala halaman */
.topbar {
  background: var(--navy);
  color: #fff;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  border-bottom: 3px solid var(--gold);
}
.brand { display: flex; align-items: center; gap: 10px; min-width: 0; flex: 1; }
.brand img { width: 34px; height: 34px; flex: none; }
.brand-title { font-weight: 700; font-size: 1.15em; letter-spacing: .3px; }
.brand-sub { font-size: .8em; color: #c9d6e6; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.tabs {
  display: flex;
  gap: 4px;
  padding: 0 16px;
  background: var(--navy-2);
  overflow-x: auto;
}
.tab {
  background: transparent;
  color: #dbe5f1;
  border: 0;
  border-bottom: 3px solid transparent;
  padding: 10px 14px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.tab[aria-selected="true"] { color: #fff; border-bottom-color: var(--gold); }
.tab:focus-visible { outline: 2px solid var(--gold); outline-offset: -2px; }

main { padding: 12px 16px 24px; max-width: 1500px; margin: 0 auto; }
.tabpanel[hidden] { display: none; }

/* Tombol */
button, .btn {
  font: inherit;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--navy);
  padding: 7px 12px;
  cursor: pointer;
  font-weight: 600;
}
button:hover { border-color: var(--navy-2); }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--gold); outline-offset: 1px;
}
button:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--navy); color: #fff; border-color: var(--navy); }
.btn-primary:hover { background: var(--navy-2); }
.btn-gold { background: var(--gold); color: var(--navy); border-color: #d99a12; }
.btn-ghost { background: transparent; color: #fff; border-color: #5d7898; }
.topbar-actions { display: flex; gap: 8px; flex: none; }
.btn-lang { min-width: 3.2em; }
.btn-ghost[aria-pressed="true"] { background: var(--gold); color: var(--navy); border-color: var(--gold); }
.chip[aria-pressed="true"] { background: var(--gold-soft); border-color: var(--gold); color: var(--navy); }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.row + .row { margin-top: 8px; }

/* Kartu */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  min-width: 0;
}

/* Panel misi */
.misi {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 5px solid var(--gold);
  border-radius: var(--radius);
  padding: 8px 14px;
  margin-bottom: 12px;
}
.misi summary { cursor: pointer; font-weight: 700; color: var(--navy); padding: 4px 0; }
.misi-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 6px; }
.misi-grid ol, .misi-grid ul { margin: .2em 0; padding-left: 1.3em; }
.misi-grid li { margin: .15em 0; }
.misi-actions { margin-top: 8px; }

/* Tata letak praktik */
.praktik-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-areas:
    "data land"
    "train land"
    "table land"
    "pred land"
    "kartu kartu";
  gap: 12px;
  align-items: start;
}
#card-data { grid-area: data; }
#land-wrap { grid-area: land; align-self: stretch; min-width: 0; }
#card-land { position: sticky; top: 8px; }
#card-train { grid-area: train; }
#card-table { grid-area: table; }
#card-pred { grid-area: pred; }
#card-kartu { grid-area: kartu; }

.canvas-wrap { position: relative; width: 100%; }
canvas { display: block; width: 100%; touch-action: manipulation; border-radius: 6px; }
#plot { cursor: crosshair; background: #fbfcfe; border: 1px solid var(--line); }
#heat { cursor: crosshair; margin: 0 auto; }
#lossChart { background: #fbfcfe; border: 1px solid var(--line); margin-top: 8px; }

.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: .85em; color: var(--muted); margin-top: 6px; }
.legend span { display: inline-flex; align-items: center; gap: 5px; }
.sw { display: inline-block; width: 12px; height: 12px; border-radius: 50%; border: 1px solid rgba(0,0,0,.25); }
.sw-gd { background: var(--gd); }
.sw-ga { background: var(--ga); }
.sw-best { background: var(--gold); border-radius: 2px; transform: rotate(45deg); width: 10px; height: 10px; }
.sw-start { background: #fff; border: 2px solid var(--navy); }
.sw-data { background: var(--navy); }
.sw-try { background: #8a96a8; }
.colorbar { height: 10px; border-radius: 4px; flex: 1; min-width: 80px;
  background: linear-gradient(90deg, #fff8e6, #f7d27a, #e09c3a, #2f6f8f, #0a2540); }

/* Form */
label { font-weight: 600; font-size: .92em; }
input[type="text"], input[type="number"], select, textarea {
  font: inherit;
  padding: 6px 8px;
  border: 1px solid #b8c4d4;
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  min-width: 0;
}
textarea { width: 100%; resize: vertical; }
input[type="range"] { width: 100%; accent-color: var(--navy); }
.field { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 8px; margin-top: 8px; }
.ctrl { display: grid; grid-template-columns: 9.5em minmax(0, 1fr) 5.5em; gap: 8px; align-items: center; margin: 6px 0; }
.ctrl output { font-family: var(--mono); font-size: .9em; text-align: right; }

.method { border-top: 1px solid var(--line); padding-top: 10px; margin-top: 10px; }
.method:first-of-type { border-top: 0; padding-top: 0; margin-top: 0; }
.method h3 .dot { display: inline-block; width: 11px; height: 11px; border-radius: 50%; margin-right: 6px; vertical-align: 0; }

.result { background: #f6f8fb; border-radius: 8px; padding: 8px 10px; margin-top: 8px; font-size: .93em; }
.result:empty { display: none; }
.msg-warn { background: #fff3df; border: 1px solid #f1c27a; color: #6b3f00; border-radius: 8px; padding: 8px 10px; margin-top: 8px; }
.msg-info { background: #e9f2fb; border: 1px solid #b9d3ee; border-radius: 8px; padding: 8px 10px; margin-top: 8px; }
.msg-warn:empty, .msg-info:empty { display: none; }
.compare { font-size: .9em; margin-top: 8px; color: var(--navy); font-weight: 600; }

/* Tabel */
table { border-collapse: collapse; width: 100%; font-size: .92em; }
th, td { padding: 4px 6px; border-bottom: 1px solid var(--line); text-align: left; }
th { color: var(--navy); background: #f1f4f9; }
td.num, th.num { text-align: right; font-family: var(--mono); }
tr.best td { background: var(--gold-soft); font-weight: 700; }
tr.stat td { background: #f6f8fb; }
.table-scroll { overflow-x: auto; }
#dataTable input { width: 100%; max-width: 9em; text-align: right; }
#dataTable td { vertical-align: middle; }
.btn-del { padding: 3px 8px; font-size: .85em; color: #8a1f22; }

/* Prediksi */
.pred-out p { margin: .3em 0; }
.pred-line { font-size: 1.05em; font-weight: 600; color: var(--navy); }
.pred-note { color: var(--warn); font-size: .9em; }

/* Kartu Hasil */
.kartu-layout { display: grid; grid-template-columns: minmax(0, 320px) minmax(0, 1fr); gap: 14px; }
.hasil {
  border: 2px solid var(--navy);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}
.hasil-head { background: var(--navy); color: #fff; padding: 10px 14px; display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; border-bottom: 3px solid var(--gold); }
.hasil-head strong { font-size: 1.2em; }
.hasil-body { padding: 10px 14px; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px 18px; }
.hasil-body h4 { margin: 0 0 4px; color: var(--navy); font-size: .95em; text-transform: uppercase; letter-spacing: .4px; }
.hasil-body p, .hasil-body li { margin: 2px 0; font-size: .95em; }
.hasil-body ul { margin: 0; padding-left: 1.1em; }
.hasil-kesimpulan { grid-column: 1 / -1; background: var(--gold-soft); border-radius: 8px; padding: 8px 10px; }
.hasil-foot { padding: 6px 14px 10px; color: var(--muted); font-size: .8em; }

/* Halaman teks */
.doc { max-width: 900px; margin: 0 auto; }
.doc .card { margin-bottom: 12px; }
.doc ol, .doc ul { padding-left: 1.4em; }
.doc dt { font-weight: 700; color: var(--navy); margin-top: 6px; }
.doc dd { margin: 0 0 4px 0; }
.honesty { border-left: 5px solid var(--gold); background: var(--gold-soft); }
pre {
  font-family: var(--mono);
  background: #0f1c2e;
  color: #e6edf6;
  padding: 12px 14px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: .88em;
  line-height: 1.5;
}
.qr-box { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.qr-box img { width: 150px; height: 150px; background: #fff; padding: 6px; border: 1px solid var(--line); border-radius: 8px; }

footer { text-align: center; color: var(--muted); font-size: .8em; padding: 8px 16px 20px; }

.toast {
  position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%);
  background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 8px;
  box-shadow: 0 6px 20px rgba(0,0,0,.25); z-index: 20; max-width: 90vw;
}
.toast[hidden] { display: none; }

/* Layar sempit: tumpuk semua panel */
@media (max-width: 900px) {
  .praktik-grid {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas: "data" "land" "train" "table" "pred" "kartu";
  }
  #card-land { position: static; }
  .misi-grid { grid-template-columns: minmax(0, 1fr); }
  .kartu-layout { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 520px) {
  main { padding: 10px 10px 20px; }
  .topbar { padding: 8px 10px; }
  .tabs { padding: 0 6px; }
  .tab { padding: 10px 10px; }
  .ctrl { grid-template-columns: 7.2em minmax(0, 1fr) 4.6em; }
  .brand-sub { display: none; }
}