:root{color-scheme:dark;--bg:#141e1d;--panel:#1c2926;--line:#3d4840;--cream:#efe6ce;--muted:#afbaa8;--gold:#e2c486;--red:#e39578;--side:240px;--gap:12px;--chrome:126px;--mapw:min(calc((100dvh - var(--chrome))*16/11),calc(100vw - 32px - var(--side) - var(--gap)))}
*{box-sizing:border-box}
html,body{overflow-x:hidden}
body{margin:0;background:radial-gradient(ellipse at 50% -20%,#34413a 0,transparent 65%),var(--bg);color:var(--cream);font-family:"Microsoft JhengHei","PingFang TC",system-ui,sans-serif}
button,a,summary{-webkit-tap-highlight-color:transparent}
button{font:inherit;cursor:pointer;border:1px solid #626951;background:#344036;color:var(--cream);padding:6px 12px;border-radius:5px;transition:background .15s}
button:hover:not(:disabled){background:#4c5846}
button:disabled{opacity:.42;cursor:not-allowed}
button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
button.primary{background:var(--gold);color:#222a21;border-color:var(--gold);font-weight:700;white-space:nowrap}
button.primary:hover:not(:disabled){background:#f1daa4}
button.quiet{background:transparent;border-color:var(--line);color:var(--muted)}
[hidden]{display:none!important}
kbd{font:600 10px/1 ui-monospace,Consolas,monospace;padding:2px 4px;border-radius:3px;border:1px solid currentColor;opacity:.7;margin-left:6px;vertical-align:1px}

/* Shell: 1280×720 keeps the whole game on screen. */
.app{width:calc(var(--mapw) + var(--side) + var(--gap));max-width:100%;margin:0 auto;padding:4px 0 0}
.topbar,.brand,.dashboard,.controls,.next-wave,.top-actions{display:flex;align-items:center}
.topbar{height:36px;justify-content:space-between}
.brand{gap:10px}
.seal{font-family:serif;background:#a64c38;border:1px solid #dc8c69;padding:1px 6px;font-size:18px;line-height:1.3;transform:rotate(-3deg)}
h1{font-size:20px;letter-spacing:4px;margin:0;font-family:"Noto Serif TC","PMingLiU",serif;font-weight:700}
.top-actions{gap:6px}.top-actions button{padding:4px 10px;font-size:12px}
.dashboard{height:32px;gap:22px;margin-top:4px;padding:0 4px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{display:flex;align-items:baseline;gap:7px;white-space:nowrap}
.stat small{color:var(--muted);font-size:11px;letter-spacing:1px}
.stat strong{font-variant-numeric:tabular-nums;font-size:18px;font-weight:600}
.stat em{font-size:12px;color:var(--muted);font-style:normal;font-weight:400}
#phase-label{font-size:12px;color:var(--gold)}
#gold-stat.flash strong{animation:flash .6s 2}
@keyframes flash{50%{color:var(--red);text-shadow:0 0 10px #e3957899}}
.controls{margin-left:auto;gap:6px}
.controls button{font-size:12px;padding:3px 9px}
#clock{font-variant-numeric:tabular-nums;font-size:12px;color:var(--muted);min-width:42px;text-align:right}
.play-layout{display:grid;grid-template-columns:var(--mapw) var(--side);gap:var(--gap);margin-top:6px}
.battlefield{min-width:0}

/* Map */
.map{position:relative;border:1px solid #59634f;border-radius:6px;overflow:hidden;background:#364333;aspect-ratio:16/11;box-shadow:0 8px 30px #0003}
canvas{display:block;width:100%;height:100%}
#sites{position:absolute;inset:0}
#fx{position:absolute;inset:0;pointer-events:none;z-index:2}
.map:focus{outline:none}
.site{position:absolute;transform:translate(-50%,-50%);width:max(32px,5.2%);aspect-ratio:1;padding:0;border:1px dashed #d5d8b58c;border-radius:50%;background:#1828209c;color:#e3dcc0;font-size:clamp(11px,1.15vw,15px);line-height:1;box-shadow:0 1px 8px #0003;transition:transform .12s,background-color .12s}
.site:hover:not(:disabled){transform:translate(-50%,-50%) scale(1.08);background-color:#67765b}
.site.selected{outline:2px solid var(--gold);outline-offset:3px}
.site.occupied{border:2px solid currentColor;background-color:#27392edd}
/* The symbol stays visible until the sprite has actually loaded. */
.site.sprite-ok .sym{opacity:0}
.site.pending{border-style:dotted}
.site.pending::before{content:"";position:absolute;inset:-6px;border-radius:50%;background:conic-gradient(var(--gold) calc(var(--progress,0)*1turn),#0006 0);-webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 4px),#000 calc(100% - 3px));mask:radial-gradient(farthest-side,transparent calc(100% - 4px),#000 calc(100% - 3px));pointer-events:none}
.site .level{position:absolute;right:-5px;bottom:-5px;border-radius:4px;background:#19261f;border:1px solid currentColor;color:var(--gold);font-size:10px;line-height:13px;padding:0 3px;font-weight:700}
.wave-track{position:absolute;left:0;right:0;bottom:0;display:flex;gap:3px;padding:0 3px 3px;pointer-events:none}
.wave-marker{height:5px;flex:1;background:#1a261fcc;border-radius:2px}
.wave-marker.done{background:#aa9667}
.wave-marker.current{background:#efd293;box-shadow:0 0 6px #e9c988aa}

/* On-map menu */
.popover{position:absolute;z-index:3;display:flex;flex-direction:column;gap:4px;padding:5px;background:#1d2b23f2;border:1px solid #9e996e;border-radius:7px;box-shadow:0 8px 24px #000a}
.pop-btn{position:relative;display:flex;align-items:center;gap:8px;min-width:104px;height:42px;padding:2px 30px 2px 4px;text-align:left;background:#2c3b31;border-color:#56614b}
.pop-btn img{width:38px;height:38px;object-fit:contain}
.pop-btn .glyph{width:38px;text-align:center;font-size:16px;color:var(--gold)}
.pop-btn .glyph.sell{color:var(--red)}
.pop-btn .price{font-variant-numeric:tabular-nums;font-weight:700;font-size:14px;white-space:nowrap}
.pop-btn kbd{position:absolute;top:3px;right:4px;margin:0;font-size:9px}
.pop-btn .need{position:absolute;bottom:3px;right:4px;font-size:10px;color:var(--red);font-weight:700}
.pop-btn.short{background:#2a2f2b}
.pop-btn.short img,.pop-btn.short .price{opacity:.5}
.pop-note{margin:2px 4px;font-size:12px;color:var(--muted);white-space:nowrap}
.pop-note b{color:var(--gold);font-variant-numeric:tabular-nums}

/* Forecast row */
.next-wave{justify-content:space-between;gap:12px;height:38px;margin-top:4px}
#forecast{margin:0;font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.next-wave button{padding:6px 14px}

/* Side panel: selected unit only. */
.command-panel{background:linear-gradient(140deg,#29382d,#1f2c26);border:1px solid var(--line);border-radius:6px;padding:14px;align-self:start;max-height:calc(100dvh - 92px);overflow:auto}
.panel-toggle{display:none}
.command-panel h2{font-size:17px;margin:0 0 4px}
.muted{color:var(--muted);font-size:12px;margin:0 0 10px;font-variant-numeric:tabular-nums}
.unit-stats{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:10px 0;border-top:1px solid #52604a;color:var(--muted);font-size:11px}
.unit-stats b{display:block;color:var(--cream);font-size:16px;margin-top:2px;font-weight:500}
.upgrade-preview{font-size:12px;color:var(--muted);line-height:1.7;margin:4px 0 0;padding:8px;background:#17261d77;border-radius:4px}
.upgrade-preview b{color:var(--cream);font-weight:600}
.demo{border-top:1px solid var(--line);margin-top:14px;padding-top:10px}
.demo summary{font-size:12px;cursor:pointer;color:var(--gold)}
.demo-buttons{display:flex;gap:5px;margin-top:8px}
.demo-buttons button{font-size:11px;padding:6px;flex:1}
#takeover{margin-top:10px;font-size:12px;width:100%}

#toast{position:fixed;bottom:56px;left:50%;transform:translateX(-50%);border-radius:6px;background:var(--cream);color:#263323;padding:9px 18px;box-shadow:0 8px 32px #0006;opacity:0;pointer-events:none;transition:opacity .2s;font-size:13px;font-weight:600;z-index:10}
#toast.show{opacity:1}
dialog{color:var(--cream);background:#25342a;border:1px solid #9e996e;border-radius:10px;padding:22px 26px;max-width:560px;width:calc(100% - 32px);max-height:calc(100dvh - 32px);box-shadow:0 20px 80px #0009}
dialog::backdrop{background:#07120cbb;backdrop-filter:blur(3px)}
dialog p,dialog li{font-size:14px;line-height:1.75;color:#c1cbb8}
dialog h2{font-family:serif;font-size:24px;margin:0 0 8px}
dialog button{margin-top:8px}
.eyebrow{font-size:11px;letter-spacing:2px;font-weight:600;color:var(--gold);margin:0 0 4px}
.rules{columns:2;column-gap:24px;padding-left:18px;margin:6px 0}
.keys{font-size:13px;line-height:2}
.keys kbd{margin:0 3px 0 8px;opacity:1;color:var(--gold)}
#result-dialog{max-width:660px}
table{width:100%;border-collapse:collapse;font-size:12px}
td,th{text-align:left;border-bottom:1px solid var(--line);padding:6px 5px}
th{color:var(--gold);font-weight:500}
.result-actions{display:flex;gap:8px;flex-wrap:wrap}
#result-detail{max-height:40vh;overflow:auto}

/* Narrow: stats → map → start; panel folds below. */
@media(max-width:759px){
  :root{--mapw:calc(100vw - 16px)}
  .app{width:100%;padding:4px 8px}
  .topbar{height:34px}
  .dashboard{height:auto;min-height:32px;flex-wrap:wrap;gap:4px 14px;padding:3px 2px}
  .stat strong{font-size:16px}
  .controls{gap:4px}
  .controls button{padding:3px 7px}
  .controls kbd,.next-wave kbd{display:none}
  .play-layout{grid-template-columns:minmax(0,1fr)}
  .site{font-size:11px}
  .pop-btn{height:36px;min-width:92px;padding-right:24px}
  .pop-btn img{width:32px;height:32px}
  .pop-btn kbd{display:none}
  .next-wave{height:42px}
  #forecast{font-size:13px}
  .command-panel{max-height:none;padding:0}
  .panel-toggle{display:block;width:100%;text-align:left;background:transparent;border:0;padding:10px 14px;font-size:13px;color:var(--gold)}
  .panel-toggle::after{content:" ▾"}
  .command-panel.open .panel-toggle::after{content:" ▴"}
  .panel-body{display:none;padding:0 14px 14px}
  .command-panel.open .panel-body{display:block}
  .rules{columns:1}
  dialog{padding:18px}
}
/* The unit is drawn in a canvas inside the site button. */
.site .unit{position:absolute;left:50%;top:50%;width:220%;height:220%;transform:translate(-50%,-50%);pointer-events:none}
.site.pending::before{z-index:1}
.site .level{z-index:2}
@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}