:root{color-scheme:dark;--ink:#eef7ed;--muted:#9fb3aa;--deep:#071016;--panel:rgba(9,21,27,.94);--line:rgba(143,188,172,.22);--gold:#ffd26a;--mint:#75ebcf;--danger:#ff655f;--warn:#ffc15f;--shadow:0 20px 60px rgba(0,0,0,.45)}
*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden;background:#071016;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input{font:inherit}button{color:inherit}.game-shell{width:100%;height:100%;display:grid;grid-template-rows:auto 1fr auto;background:radial-gradient(circle at 50% -20%,#1b3840,#071016 58%)}
.topbar{position:relative;z-index:4;display:grid;grid-template-columns:minmax(210px,1fr) auto minmax(240px,1fr);align-items:center;gap:18px;padding:10px 18px;border-bottom:1px solid var(--line);background:rgba(5,14,19,.95);box-shadow:0 12px 36px rgba(0,0,0,.28)}.brand{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.brand-mark{width:34px;height:34px;border-radius:12px;background:linear-gradient(145deg,#ffd26a,#e78155);box-shadow:inset 0 0 0 2px rgba(255,255,255,.18),0 0 22px rgba(255,196,92,.25);position:relative}.brand-mark:before{content:"";position:absolute;left:8px;right:8px;top:7px;height:3px;background:#182026;box-shadow:0 7px 0 #182026,0 14px 0 #182026;transform:skewX(-18deg)}#mission-title{text-align:center;font-size:.9rem;color:var(--muted);font-weight:750}.top-actions{display:flex;justify-content:flex-end;gap:8px}.icon-button,.tool-button,.primary,.secondary{border:1px solid var(--line);background:linear-gradient(180deg,rgba(29,49,53,.96),rgba(10,25,31,.96));border-radius:12px;padding:9px 12px;cursor:pointer;transition:.16s transform,.16s border-color,.16s background}.icon-button:hover,.tool-button:hover,.primary:hover,.secondary:hover{transform:translateY(-1px);border-color:rgba(117,235,207,.55)}
.stage{position:relative;min-height:0}#game{width:100%;height:100%;display:block;touch-action:none}.hud{position:absolute;z-index:3;left:14px;right:14px;top:14px;display:grid;grid-template-columns:minmax(180px,1.4fr) repeat(3,minmax(110px,.7fr));gap:10px;pointer-events:none}.hud-card{background:rgba(6,17,22,.86);border:1px solid var(--line);border-radius:14px;padding:10px 12px;box-shadow:0 12px 34px rgba(0,0,0,.3);backdrop-filter:blur(12px)}.hud-card label{display:block;color:var(--muted);font-size:.69rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;margin-bottom:5px}.hud-card strong{font-size:.92rem}.oxygen-track{height:7px;margin-top:7px;background:#13272d;border-radius:99px;overflow:hidden}.oxygen-track span{display:block;height:100%;width:100%;background:linear-gradient(90deg,#5fd8d0,#8bf0c0);transition:width .2s}.oxygen-track span[data-low="true"]{background:linear-gradient(90deg,#ff655f,#ffc15f)}#stress-value[data-level="danger"]{color:var(--danger)}#stress-value[data-level="warn"]{color:var(--warn)}#stress-value[data-level="safe"]{color:var(--mint)}.objective-card{grid-column:1/-1;max-width:560px}.controls{position:relative;z-index:4;display:flex;justify-content:center;gap:8px;padding:10px 14px;border-top:1px solid var(--line);background:rgba(5,14,19,.96)}.tool-button{display:flex;align-items:center;gap:7px;min-width:108px;justify-content:center}.tool-button kbd{font-size:.7rem;background:#0b151a;border:1px solid rgba(255,255,255,.15);padding:2px 5px;border-radius:5px;color:var(--gold)}
.toast{position:absolute;z-index:9;left:50%;bottom:82px;transform:translate(-50%,20px);padding:11px 16px;border:1px solid rgba(117,235,207,.34);background:rgba(7,20,25,.96);border-radius:12px;opacity:0;pointer-events:none;transition:.18s;box-shadow:var(--shadow);max-width:min(520px,88vw);text-align:center}.toast.visible{opacity:1;transform:translate(-50%,0)}.toast[data-danger="true"]{border-color:rgba(255,101,95,.5);color:#ffd1ce}
.overlay{position:absolute;z-index:8;inset:0;display:grid;place-items:center;padding:18px;background:linear-gradient(180deg,rgba(4,11,15,.38),rgba(4,11,15,.86));backdrop-filter:blur(7px)}.overlay[hidden],.panel[hidden]{display:none}.base-panel{width:min(1040px,95vw);max-height:92%;overflow:auto;background:linear-gradient(155deg,rgba(16,38,43,.98),rgba(6,17,23,.98));border:1px solid rgba(255,210,106,.28);border-radius:24px;padding:22px;box-shadow:var(--shadow)}.base-header{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px}.eyebrow{color:var(--gold);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;font-weight:900}.base-header h1{font-size:clamp(2rem,5vw,4.4rem);line-height:.88;margin:5px 0 8px;text-transform:uppercase;letter-spacing:-.055em}.base-header p{margin:0;color:var(--muted);max-width:620px}.base-summary{text-align:right;color:var(--muted);font-size:.82rem}.expedition-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.expedition-card{text-align:left;display:grid;gap:5px;padding:13px;border:1px solid var(--line);border-radius:14px;background:rgba(8,24,29,.75);cursor:pointer;min-height:126px}.expedition-card:hover,.expedition-card[data-selected="true"]{border-color:rgba(255,210,106,.62);background:rgba(38,50,42,.9)}.expedition-card .band{font-size:.67rem;letter-spacing:.1em;color:var(--gold);font-weight:900;text-transform:uppercase}.expedition-card>span:not(.band){font-size:.79rem;color:var(--muted)}.expedition-card small{margin-top:auto;color:#7cebd3}.museum{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}.museum h2{font-size:.82rem;text-transform:uppercase;letter-spacing:.12em;color:var(--muted)}.museum-grid{display:flex;gap:9px;overflow:auto}.museum-grid article{min-width:120px;padding:10px;border:1px solid var(--line);border-radius:12px;background:rgba(5,15,20,.72);display:grid;gap:4px;text-transform:capitalize}.museum-grid small,.empty-museum{color:var(--muted)}.sample-gem{width:32px;height:32px;border-radius:10px;background:linear-gradient(145deg,#6eebcf,#245c62);box-shadow:inset 0 0 0 2px rgba(255,255,255,.18)}.sample-gem[data-sample="iron"]{background:linear-gradient(145deg,#e77e59,#723d39)}.sample-gem[data-sample="crystal"]{background:linear-gradient(145deg,#bc86ff,#4c4f9d)}.sample-gem[data-sample="salt"]{background:linear-gradient(145deg,#ffb3c8,#9b5671)}.base-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:18px}.primary{background:linear-gradient(135deg,#ffc75f,#e87f50);color:#111b1e;font-weight:900;border-color:transparent}.secondary{color:var(--ink)}
.panel{position:absolute;z-index:10;right:16px;top:16px;width:min(390px,calc(100% - 32px));max-height:calc(100% - 32px);overflow:auto;background:var(--panel);border:1px solid rgba(117,235,207,.3);border-radius:18px;padding:18px;box-shadow:var(--shadow)}.panel-head{display:flex;justify-content:space-between;align-items:center}.panel h2{margin:0}.panel p,.panel li{color:var(--muted);line-height:1.5}.panel label{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:start;padding:10px 0;border-bottom:1px solid var(--line)}.panel input{width:18px;height:18px;accent-color:#75ebcf}.close{border:0;background:transparent;color:var(--muted);font-size:1.4rem;cursor:pointer}.help-grid{display:grid;grid-template-columns:auto 1fr;gap:7px 12px}.help-grid kbd{color:var(--gold);font-weight:800}
body:not([data-ready="true"]) .base-panel:after{content:"Loading authored cave atlas…";display:block;margin-top:12px;color:var(--muted)}
@media(max-width:850px){.topbar{grid-template-columns:1fr auto}.topbar #mission-title{display:none}.hud{grid-template-columns:repeat(3,1fr)}.hud-card:first-child{grid-column:1/3}.objective-card{grid-column:1/-1}.expedition-list{grid-template-columns:repeat(2,minmax(0,1fr))}.controls{overflow-x:auto;justify-content:flex-start}.tool-button{min-width:96px}.base-header{display:block}.base-summary{text-align:left;margin-top:10px}}
@media(max-width:560px){.brand span:last-child{display:none}.top-actions .icon-button span{display:none}.hud{left:7px;right:7px;top:7px;gap:6px}.hud-card{padding:7px 8px}.hud-card label{font-size:.58rem}.hud-card strong{font-size:.78rem}.objective-card{display:none}.expedition-list{grid-template-columns:1fr}.base-panel{padding:15px}.base-actions{position:sticky;bottom:0;padding-top:12px;background:linear-gradient(transparent,#0a1d23 25%)}.tool-button{padding:8px;min-width:84px}.tool-button span{font-size:.75rem}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}