/* Bina Tamadun — styles. Brand: Detektif Sejarah (teal #1F4E5A, ochre #C98B2B, cream #F6EFE2, ink #22313A,
   stamp red #B22A2A, Poppins). Scoped to .bt-root so it cannot affect the rest of the site. */
.bt-root{--teal:#1F4E5A;--teal2:#13707A;--teal9:#10242C;--ochre:#C98B2B;--ochre7:#8A5A12;--gold:#FFD678;--cream:#F6EFE2;--paper:#FDFAF3;
  --ink:#22313A;--ink6:#5B6B73;--line:#E4D8C2;--red:#B22A2A;--green:#2F7A47;--purple:#62349A;
  position:relative;max-width:760px;margin:0 auto;font-family:'Poppins',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;color:var(--ink);
  background:var(--cream);border-radius:20px;padding:12px;line-height:1.45;-webkit-tap-highlight-color:transparent;overflow:hidden}
.bt-root *{box-sizing:border-box}
.bt-root button{font:inherit;color:inherit}
.bt-root h2{font-size:1.35rem;line-height:1.2;margin:4px 0 10px;color:var(--teal)}
.bt-root h3{font-size:1.02rem;margin:14px 0 8px;color:var(--teal)}
.bt-root p{margin:0 0 10px}
.bt-root a{color:var(--teal2)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* top bar */
.bt-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:var(--teal);color:#fff;border-radius:14px;padding:8px 10px}
.bt-brand{display:flex;align-items:center;gap:8px;flex:1;min-width:150px}
.bt-brand b{display:block;font-size:1.05rem;letter-spacing:.02em}
.bt-brand small{display:block;color:var(--gold);font-size:.78rem;font-weight:600}
.bt-logo{width:36px;height:36px;border-radius:50%;background:var(--teal9);display:grid;place-items:center;font-size:1.1rem}
.bt-stagepill{background:var(--ochre);color:var(--ink);font-weight:700;font-size:.72rem;letter-spacing:.04em;padding:4px 10px;border-radius:99px;text-transform:uppercase}
.bt-topbtns{display:flex;gap:6px}
.bt-ibtn{display:inline-flex;align-items:center;gap:4px;min-height:44px;padding:6px 10px;border-radius:10px;border:1px solid rgb(255 255 255/.35);background:rgb(255 255 255/.08);cursor:pointer;font-weight:600;font-size:.82rem;color:#fff!important}
.bt-ibtn:hover{background:rgb(255 255 255/.18)}

/* resources */
.bt-res{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:8px 0}
.bt-chip{display:flex;gap:6px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:6px 8px;min-width:0}
.bt-chip__ic{font-size:1.3rem}
.bt-chip b{font-size:1.1rem;font-variant-numeric:tabular-nums}
.bt-chip i{display:block;font-style:normal;font-size:.68rem;font-weight:600;color:var(--ink6);text-transform:uppercase;letter-spacing:.04em}
.bt-chip small{display:block;font-size:.62rem;color:var(--ink6)}
.bt-chip em{font-style:normal;font-size:.72rem;font-weight:700;margin-left:4px}
.bt-chip em.up{color:var(--green)} .bt-chip em.down{color:var(--red)}
@media (max-width:420px){.bt-res{grid-template-columns:repeat(2,1fr)}}

/* goal */
.bt-goal{background:var(--paper);border:1px solid var(--line);border-left:4px solid var(--ochre);border-radius:12px;padding:8px 12px;font-size:.86rem}
.bt-goal p{margin:0 0 4px}
.bt-goal__next{font-weight:700;color:var(--teal)}
.bt-req{list-style:none;margin:0 0 4px;padding:0;display:flex;flex-wrap:wrap;gap:4px 10px}
.bt-req li{color:var(--ink6)} .bt-req li.ok{color:var(--green);font-weight:600}
.bt-req small{color:var(--ochre7);font-weight:700}
.bt-warn{color:var(--red);font-weight:600}
.bt-tip{background:#FFF6DF;border-radius:8px;padding:6px 10px;font-size:.84rem}
.bt-link{background:none;border:0;color:var(--teal2);text-decoration:underline;font-weight:700;cursor:pointer;padding:0 2px;min-height:28px}

/* map */
.bt-map{margin:8px 0;border-radius:16px;overflow:hidden;box-shadow:0 6px 18px rgb(34 49 58/.15);background:#B9D69A}
.bt-map svg{display:block;width:100%;height:auto;touch-action:manipulation}
.bt-maplbl{font:700 11px Poppins,sans-serif;fill:#1F4E5A;opacity:.75}
.bt-maplbl--river{fill:#fff;opacity:.95}
.bt-river-shine{animation:bt-flow 3s linear infinite}
@keyframes bt-flow{to{stroke-dashoffset:-56}}
.bt-plot{cursor:pointer;outline:none}
.bt-tile{stroke:rgb(255 255 255/.75);stroke-width:2;transition:stroke .15s}
.t-tebing .bt-tile{fill:#8FC07A}.t-dataran .bt-tile{fill:#C3D98A}.t-bukit .bt-tile{fill:#B4AE8A}.t-hutan .bt-tile{fill:#6E9A5A}
.bt-plot:hover .bt-tile,.bt-plot:focus-visible .bt-tile{stroke:#fff;stroke-width:3.5}
.bt-plot.is-sel .bt-tile{stroke:var(--gold);stroke-width:4}
.bt-plus{font:700 22px Poppins,sans-serif;fill:rgb(31 78 90/.45)}
.bt-tilelbl{font:700 9px Poppins,sans-serif;fill:#22313A}
.bt-bld{transform-box:fill-box;transform-origin:50% 100%}
.bt-bld.is-new{animation:bt-pop .45s cubic-bezier(.2,.9,.3,1.4)}
@keyframes bt-pop{0%{transform:scale(.2);opacity:0}100%{transform:scale(1);opacity:1}}
.bt-bld.is-idle{opacity:.55;filter:grayscale(.6)}
.bt-smoke{animation:bt-smoke 2s ease-out infinite}
@keyframes bt-smoke{0%{transform:translateY(0);opacity:.9}100%{transform:translateY(-10px);opacity:0}}
.bt-dig{cursor:pointer}
.bt-dig .bt-digdot{animation:bt-pulse 1.6s ease-in-out infinite;transform-box:fill-box;transform-origin:center}
.bt-dig.is-used{opacity:.4} .bt-dig.is-used .bt-digdot{animation:none}
.bt-digic{font-size:14px}
@keyframes bt-pulse{50%{transform:scale(1.15)}}
.bt-hl{outline:4px solid var(--gold)!important;outline-offset:3px;border-radius:12px}
g.bt-hl{outline:none!important} g.bt-hl .bt-tile{stroke:var(--gold);stroke-width:5}

/* actions */
.bt-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.bt-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:48px;padding:10px 16px;border-radius:99px;border:2px solid var(--teal);background:var(--teal);color:#fff!important;font-weight:700;cursor:pointer;text-decoration:none;transition:transform .12s}
.bt-btn:hover{transform:translateY(-1px)}
.bt-btn:disabled{opacity:.45;cursor:default;transform:none}
.bt-btn small{font-weight:500;opacity:.85}
.bt-btn--ghost{background:#fff;color:var(--teal)!important}
.bt-btn--sm{min-height:40px;padding:6px 12px;font-size:.85rem}
.bt-actions .bt-btn{flex-direction:column;gap:0;line-height:1.2;border-radius:16px}
.bt-actions .bt-btn small{font-size:.72rem}
.bt-actions [data-act="end"]{background:var(--ochre);border-color:var(--ochre);color:var(--ink)!important}

/* bottom panel */
.bt-panel{position:sticky;bottom:0;margin-top:8px;background:#fff;border:2px solid var(--teal);border-radius:16px;padding:10px 12px;box-shadow:0 -6px 20px rgb(34 49 58/.15);max-height:62vh;overflow:auto;z-index:5}
.bt-panel__head{display:flex;justify-content:space-between;align-items:center;font-size:1.05rem;color:var(--teal)}
.bt-x{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--cream);cursor:pointer;font-size:1rem}
.bt-small{font-size:.8rem;color:var(--ink6)}
.bt-build{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.bt-bopt{display:grid;grid-template-columns:36px 1fr auto;gap:8px;align-items:center;width:100%;text-align:left;background:var(--paper);border:2px solid var(--line);border-radius:12px;padding:8px 10px;cursor:pointer;min-height:56px}
.bt-bopt:hover:not(.is-off){border-color:var(--teal2)}
.bt-bopt.is-off{opacity:.7;background:#F3EFE6}
.bt-bopt__ic{font-size:1.6rem}
.bt-bopt__t b{display:block}
.bt-bopt__t small{display:block;font-size:.76rem;color:var(--ink6)}
.bt-cost{font-weight:700;white-space:nowrap;font-size:.9rem}
.bt-bad{color:var(--red)!important;font-weight:600}
.bt-ok{color:var(--green);font-weight:600}
.bt-info{display:flex;gap:10px;margin-bottom:8px}
.bt-info__ic{font-size:2rem}
.bt-info p{margin:2px 0;font-size:.86rem}
.bt-why{background:#E6F4F5;border-radius:8px;padding:6px 8px}
.bt-src{font-size:.74rem;color:var(--ochre7);font-weight:600}
.bt-src a{color:var(--ochre7)}

/* coach mark */
.bt-coach{position:sticky;bottom:8px;margin-top:8px;background:var(--ink);color:#fff;border-radius:14px;padding:10px 12px;font-size:.88rem;box-shadow:0 8px 24px rgb(0 0 0/.25);z-index:6}
.bt-coach .bt-btn--ghost{background:transparent;color:#fff!important;border-color:#fff}
.bt-coach .bt-btn{border-color:var(--gold);background:var(--gold);color:var(--ink)!important}
.bt-row{display:flex;flex-wrap:wrap;gap:6px}

/* modal */
.bt-modal{position:fixed;inset:0;z-index:50;background:rgb(16 36 44/.6);display:flex;align-items:flex-end;justify-content:center;padding:10px}
.bt-modal[hidden]{display:none}
@media (min-width:640px){.bt-modal{align-items:center}}
.bt-modal__card{width:100%;max-width:600px;max-height:92vh;display:flex;flex-direction:column;background:var(--paper);border-radius:20px;box-shadow:0 20px 50px rgb(0 0 0/.35);animation:bt-up .25s ease-out;font-family:'Poppins',system-ui,sans-serif;color:var(--ink)}
@keyframes bt-up{from{transform:translateY(30px);opacity:0}}
.bt-modal__body{overflow:auto;padding:18px 18px 6px}
.bt-modal__btns{display:flex;flex-wrap:wrap;gap:8px;padding:10px 18px 16px;border-top:1px solid var(--line)}
.bt-modal__btns .bt-btn{flex:1 1 160px}
.bt-kicker{font-size:.72rem!important;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ochre7);margin:0 0 2px!important}
.bt-clues{background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 12px;margin-bottom:10px}
.bt-clues__h{font-weight:700;color:var(--teal);margin:0 0 6px!important}
.bt-clue{display:flex;gap:8px;font-size:.9rem;margin:0 0 6px!important}
.bt-opts{display:grid;gap:8px}
.bt-opt{display:flex;gap:10px;text-align:left;width:100%;background:#fff;border:2px solid var(--line);border-radius:14px;padding:10px 12px;cursor:pointer;min-height:56px}
.bt-opt:hover:not(.is-off):not([disabled]){border-color:var(--teal2);transform:translateY(-1px)}
.bt-opt.is-off{opacity:.65;background:#F3EFE6}
.bt-opt__ic{flex:none;width:36px;height:36px;border-radius:10px;background:var(--cream);display:grid;place-items:center;font-size:1.3rem;font-weight:800;color:var(--teal)}
.bt-opt b{display:block;margin-bottom:2px}
.bt-opt small{display:block;font-size:.8rem}
.bt-plus{color:var(--green)} .bt-minus{color:var(--red)}
.bt-opt.is-yes{border-color:var(--green);background:#EAF5EE}
.bt-opt.is-no{border-color:var(--red);background:#FBECEC}
.bt-fact,.bt-sim{border-radius:12px;padding:10px 12px;margin:0 0 10px}
.bt-fact{background:#EAF5EE;border-left:4px solid var(--green)}
.bt-sim{background:#FFF6DF;border-left:4px solid var(--ochre)}
.bt-fact>span,.bt-sim>span{display:block;font-size:.68rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;margin-bottom:2px}
.bt-fact>span{color:var(--green)} .bt-sim>span{color:var(--ochre7)}
.bt-fact p,.bt-sim p{margin:0 0 4px;font-size:.9rem}
.bt-fact small,.bt-sim small{font-size:.74rem;color:var(--ochre7);font-weight:600}
.bt-result{font-size:1rem}
.bt-diff{font-weight:800;font-size:1.05rem;color:var(--teal)}
.bt-trade{font-size:.84rem;background:#fff;border:1px dashed var(--line);border-radius:10px;padding:8px 10px}
.bt-rep{margin:0 0 6px;padding-left:1.2em}
.bt-rep li{margin-bottom:4px}
.bt-find{text-align:center}
.bt-find__art{display:inline-grid;place-items:center;width:130px;height:130px;border-radius:50%;background:radial-gradient(circle,#FFF6DF,#F6EFE2);margin:4px auto 6px;animation:bt-pop .5s cubic-bezier(.2,.9,.3,1.4)}
.bt-find .bt-fact,.bt-find .bt-sim{text-align:left}
.bt-pz{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:8px}
.bt-pz__it{display:flex;flex-direction:column;align-items:center;gap:4px;background:#fff;border:2px solid var(--line);border-radius:14px;padding:10px;cursor:pointer;font-size:.85rem;font-weight:600;min-height:120px}
.bt-pz__it:hover:not([disabled]){border-color:var(--teal2)}
.bt-pz__it.is-no{border-color:var(--red);background:#FBECEC;opacity:.75}
.bt-pz__it.is-yes{border-color:var(--green);background:#EAF5EE}
.bt-stage{text-align:center}
.bt-stage .bt-fact{text-align:left}
.bt-finds{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.bt-findcard{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px}
.bt-findcard small{font-size:.74rem;color:var(--ink6)}
.bt-findcard em{display:block;font-style:normal;color:var(--ochre7);font-weight:600}
.bt-findcard.is-lock{opacity:.55}
.bt-lock{width:56px;height:56px;border-radius:50%;background:var(--cream);display:grid;place-items:center;font-size:1.6rem;font-weight:800;color:var(--ink6)}
.bt-declist{padding-left:1.2em;font-size:.88rem}
.bt-declist li{margin-bottom:8px}
.bt-tag{display:inline-block;background:var(--teal);color:#fff;font-size:.7rem;font-weight:700;border-radius:99px;padding:1px 8px;margin-top:2px}
.bt-stats{display:flex;flex-wrap:wrap;gap:6px}
.bt-stats span{background:#fff;border:1px solid var(--line);border-radius:99px;padding:3px 10px;font-size:.85rem}
.bt-two{display:grid;grid-template-columns:1fr 1fr;gap:8px}
@media (max-width:480px){.bt-two{grid-template-columns:1fr}}
.bt-good,.bt-again{border-radius:12px;padding:8px 12px}
.bt-good{background:#EAF5EE}.bt-again{background:#FFF6DF}
.bt-good h3,.bt-again h3{margin-top:0}
.bt-good ul,.bt-again ul{margin:0;padding-left:1.1em;font-size:.88rem}
.bt-score{font-size:1rem;margin-top:10px}
.bt-menu{display:grid;gap:10px;margin-bottom:10px}
.bt-menu label{display:flex;gap:10px;align-items:center;min-height:44px;font-weight:600}
.bt-menu input{width:22px;height:22px;accent-color:var(--teal)}
.bt-intro{text-align:center}
.bt-intro__badge{width:72px;height:72px;margin:0 auto 6px;border-radius:50%;background:var(--teal);display:grid;place-items:center;font-size:2rem;box-shadow:0 0 0 6px var(--gold)}
.bt-introlist{text-align:left;list-style:none;padding:0;margin:0 0 10px;display:grid;gap:6px}
.bt-introlist li{background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 10px}
.bt-intro .bt-sim{text-align:left}
.bt-qfb{margin-top:10px}

/* toast, confetti, error */
.bt-toast{position:fixed;left:50%;bottom:18px;transform:translate(-50%,160%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:99px;font-size:.88rem;z-index:60;transition:transform .3s;max-width:calc(100vw - 32px);text-align:center}
.bt-toast.is-in{transform:translate(-50%,0)}
.bt-confetti{position:fixed;inset:0;pointer-events:none;z-index:70;overflow:hidden}
.bt-confetti i{position:absolute;top:-10px;width:8px;height:12px;border-radius:2px;animation:bt-fall 2.2s linear forwards}
@keyframes bt-fall{to{top:105%;transform:translateX(30px) rotate(540deg)}}
.bt-error{background:#FBECEC;border:2px solid var(--red);border-radius:12px;padding:16px;font-weight:600}
.bt-loading{padding:40px;text-align:center;font-weight:600;color:var(--teal)}
.bt-root :focus-visible{outline:3px solid var(--teal2);outline-offset:2px}

@media (prefers-reduced-motion:reduce){
  .bt-root *,.bt-root *::before,.bt-modal__card{animation:none!important;transition:none!important}
}

/* wide screens: map left, controls right */
@media (min-width:900px){
  .bt-root{max-width:1120px;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(320px,1fr);grid-template-areas:"top top" "map res" "map goal" "map panel" "actions coach";column-gap:14px;align-items:start}
  .bt-top{grid-area:top}.bt-res{grid-area:res;grid-template-columns:repeat(2,1fr)}.bt-goal{grid-area:goal}.bt-map{grid-area:map;margin-top:8px}
  .bt-actions{grid-area:actions}.bt-panel{grid-area:panel;position:static;max-height:none}.bt-coach{grid-area:coach;position:static}
}