:root{
  color-scheme:dark;
  --bg:#07100d;
  --panel:#101c17;
  --panel-2:#15261e;
  --line:#2b453a;
  --text:#f3f5ef;
  --muted:#a9b8af;
  --green:#76de8b;
  --gold:#efc667;
  --paper:#f8f6ed;
  --ink:#151b18;
  --danger:#ff9587;
  font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*{box-sizing:border-box}
html{background:var(--bg);scroll-behavior:smooth}
body{margin:0;min-height:100vh;background:
  radial-gradient(circle at 10% 0%,rgba(80,175,105,.13),transparent 28rem),
  radial-gradient(circle at 92% 10%,rgba(122,86,178,.1),transparent 25rem),
  linear-gradient(180deg,#08130f,#050a08 78%);color:var(--text)}
button,input{font:inherit}
button,a{touch-action:manipulation}
button{border:0;color:inherit}
a{color:inherit}
.skip-link{position:fixed;left:1rem;top:-5rem;z-index:1000;padding:.8rem 1rem;border-radius:.7rem;background:#fff;color:#111;font-weight:850}
.skip-link:focus{top:1rem}
.game-shell{width:min(1440px,calc(100% - 28px));margin:0 auto;padding:22px 0 54px}
.topbar{display:grid;grid-template-columns:1fr auto;align-items:center;gap:2rem;padding:24px 26px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(145deg,rgba(20,37,29,.95),rgba(8,18,14,.94));box-shadow:0 24px 70px rgba(0,0,0,.28);overflow:hidden;position:relative}
.topbar:after{content:"";position:absolute;right:-8rem;bottom:-11rem;width:30rem;height:30rem;border-radius:50%;background:radial-gradient(circle,rgba(118,222,139,.13),transparent 65%);pointer-events:none}
.eyebrow{margin:0 0 .4rem;color:var(--gold);font-size:.72rem;font-weight:900;letter-spacing:.15em;text-transform:uppercase}
h1{margin:0;font-size:clamp(2.6rem,7vw,6.4rem);line-height:.86;letter-spacing:-.07em}
.intro{max-width:68rem;margin:.75rem 0 0;color:var(--muted);line-height:1.6}
.top-mark{width:96px;aspect-ratio:1;display:grid;place-items:center;border:1px solid rgba(239,198,103,.45);border-radius:24px;background:#10221a;position:relative;overflow:hidden}
.top-mark span{font-size:2rem;font-weight:1000;color:var(--gold);letter-spacing:-.08em;z-index:1}
.top-mark i{position:absolute;width:52px;height:72px;border-radius:55% 45% 58% 42%;background:linear-gradient(145deg,#81e494,#225b3a);opacity:.23;transform:rotate(24deg)}
.codebar{display:flex;gap:10px;align-items:end;flex-wrap:wrap;margin:14px 0;padding:12px;border:1px solid var(--line);border-radius:16px;background:rgba(13,25,20,.9)}
.code-field{display:grid;gap:5px;min-width:180px}.code-field span{color:var(--muted);font-size:.7rem;font-weight:850;text-transform:uppercase;letter-spacing:.08em}
.code-field input{padding:.75rem .9rem;border:1px solid #3c5c4d;border-radius:10px;background:#07100d;color:var(--text);font-weight:900;letter-spacing:.17em;text-transform:uppercase;outline:0}
.code-field input[aria-invalid="true"]{border-color:var(--danger)}
.codebar button,.tool-card button{min-height:43px;padding:.7rem .95rem;border:1px solid #345645;border-radius:10px;background:#1b3429;font-weight:850;cursor:pointer;transition:transform .15s ease,background .15s ease,border-color .15s ease}
.codebar button:hover,.tool-card button:hover{transform:translateY(-1px);background:#264737;border-color:#5c8b70}
button:disabled{opacity:.42;cursor:not-allowed;transform:none!important}
.load-status{margin-left:auto;padding:.66rem;color:var(--muted);font-size:.8rem}
.workspace{display:grid;grid-template-columns:300px minmax(0,1fr);gap:14px;align-items:start}
.activity-rail{display:grid;gap:10px;position:sticky;top:10px;max-height:calc(100vh - 20px);overflow:auto;padding-right:2px;scrollbar-width:thin}
.rail-card{padding:15px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,var(--panel-2),var(--panel));box-shadow:0 10px 25px rgba(0,0,0,.14)}
.rail-card h2{margin:0;font-size:1.05rem}.rail-card p{margin:.45rem 0 0;color:var(--muted);font-size:.84rem;line-height:1.45}
.prompt-card>span,.activity-status>span{display:block;color:var(--gold);font-size:.68rem;font-weight:900;letter-spacing:.14em;text-transform:uppercase}
.prompt-card>strong{display:block;margin-top:.45rem;font-size:.92rem;line-height:1.45}
.rail-heading{display:flex;justify-content:space-between;align-items:end;gap:10px}.rail-heading strong{font-size:1.1rem;color:var(--gold)}
.palette-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:7px;margin-top:10px}
.swatch-button{display:grid;grid-template-columns:28px 1fr auto;align-items:center;gap:7px;min-height:44px;padding:.4rem .45rem;border:1px solid #324d40;border-radius:10px;background:#0b1712;text-align:left;color:#dce7df;cursor:pointer}
.swatch-button[aria-pressed="true"]{border-color:var(--gold);box-shadow:0 0 0 2px rgba(239,198,103,.16);background:#1f2618}
.swatch{width:27px;height:27px;border:2px solid rgba(255,255,255,.58);border-radius:8px;background:var(--swatch);box-shadow:inset 0 0 0 1px rgba(0,0,0,.15)}
.swatch-button>span:nth-child(2){font-size:.73rem;font-weight:800}.swatch-button kbd{font-size:.65rem}
.shortcut-copy{font-size:.7rem!important}.tool-card{display:grid;grid-template-columns:1fr 1fr;gap:8px}.tool-card button{padding:.65rem .55rem;font-size:.76rem}.tool-card kbd{margin-left:3px}
.progress-track{height:8px;margin-top:10px;border-radius:999px;background:#24372f;overflow:hidden}.progress-track span{display:block;width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,#5cb276,#e8c267);transition:width .18s ease}
.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:11px}.mini-stats>div{padding:7px 5px;border-radius:9px;background:#0b1612;text-align:center}.mini-stats span{display:block;color:var(--muted);font-size:.61rem;text-transform:uppercase;font-weight:800}.mini-stats strong{display:block;margin-top:2px;font-size:.8rem}
.hidden-list{list-style:none;margin:10px 0 0;padding:0;display:grid;gap:6px}.hidden-list li{display:flex;gap:8px;align-items:center;padding:7px;border-radius:10px;background:#0b1612;border:1px solid #263d32}.hidden-list li>span{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:#192b23;color:var(--muted);font-weight:950}.hidden-list li.found{border-color:#41694f}.hidden-list li.found>span{background:#214b31;color:var(--green)}.hidden-list strong{display:block;font-size:.75rem}.hidden-list small{display:block;color:var(--muted);font-size:.65rem;margin-top:2px}
.playfield{min-width:0;padding:15px;border:1px solid var(--line);border-radius:20px;background:rgba(10,20,16,.92);box-shadow:0 20px 55px rgba(0,0,0,.22)}
.playfield-header{display:flex;justify-content:space-between;gap:20px;align-items:end;padding:2px 4px 12px}.playfield-header h2{margin:0;font-size:1.25rem}.playfield-header>p{max-width:34rem;margin:0;color:var(--muted);font-size:.76rem;line-height:1.45;text-align:right}
.art-mount{position:relative;display:grid;place-items:center;width:100%;min-height:min(72vh,760px);overflow:hidden;border:1px solid #50635a;border-radius:16px;background:var(--paper);box-shadow:inset 0 0 0 8px #e6e0d2,0 16px 36px rgba(0,0,0,.2)}
.high-lines-svg{display:block;width:100%;height:auto;max-height:76vh;background:var(--paper)}
#art-mount [data-region],#art-mount [data-hidden]{cursor:pointer;transition:filter .13s ease,opacity .13s ease}
#art-mount [data-region]:hover{filter:brightness(.94)}
#art-mount [data-region][data-colored="true"]:hover{filter:saturate(1.12) brightness(.94)}
#art-mount [data-region]:focus-visible,#art-mount [data-hidden]:focus-visible{outline:7px solid #d99235;outline-offset:5px;filter:drop-shadow(0 0 7px rgba(217,146,53,.7))}
#art-mount [data-hidden]:hover{filter:drop-shadow(0 0 6px rgba(217,146,53,.75))}
.art-loading,.art-error{display:grid;place-items:center;gap:10px;min-height:420px;color:#39453f;text-align:center}.art-loading span{width:54px;height:54px;border:5px solid #ced2c9;border-top-color:#3e7d52;border-radius:50%;animation:spin 1s linear infinite}.art-error span{color:#69726d}
@keyframes spin{to{transform:rotate(360deg)}}
.activity-status{margin-top:10px;padding:12px 14px;border:1px solid #29473a;border-radius:12px;background:#0d1b15}.activity-status strong{display:block;margin-top:3px;font-size:.88rem}.activity-status p{margin:.3rem 0 0;color:var(--muted);font-size:.74rem;line-height:1.4}.activity-status.complete{border-color:#9c8242;background:#282414}.activity-status.complete>span,.activity-status.complete strong{color:var(--gold)}
kbd{padding:.12rem .34rem;border:1px solid #4b6256;border-radius:5px;background:#101b16;color:#e4ece6;font-family:inherit;font-size:.72em;font-weight:900}
.boundary-note{margin-top:14px;padding:15px 17px;border-left:4px solid #647a6d;border-radius:10px;background:#0c1612;color:#b8c6bd;font-size:.84rem;line-height:1.55}
.footer-nav{display:flex;justify-content:space-between;gap:10px;margin-top:16px}.footer-nav a{padding:.7rem .9rem;border:1px solid var(--line);border-radius:10px;background:#0d1814;text-decoration:none;font-weight:800}
.codebar button:focus-visible,.tool-card button:focus-visible,.swatch-button:focus-visible,.code-field input:focus-visible,.footer-nav a:focus-visible{outline:3px solid var(--gold);outline-offset:3px}
.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
@media(max-width:980px){
  .workspace{display:flex;flex-direction:column}
  .playfield{order:-1;width:100%}
  .activity-rail{position:static;max-height:none;width:100%;grid-template-columns:repeat(2,minmax(0,1fr));overflow:visible}
  .scene-card,.prompt-card{min-height:120px}
  .art-mount{min-height:56vw}
}
@media(max-width:650px){
  .game-shell{width:min(100% - 16px,1440px);padding-top:8px}
  .topbar{grid-template-columns:1fr;padding:17px;border-radius:17px}.top-mark{display:none}.intro{font-size:.9rem}
  .codebar{align-items:stretch}.code-field{width:100%}.codebar button{flex:1}.load-status{width:100%;margin:0;padding:.35rem 0}
  .playfield{padding:8px;border-radius:14px}.playfield-header{display:block;padding:8px}.playfield-header>p{margin-top:.45rem;text-align:left}.art-mount{min-height:68vw;border-radius:10px;box-shadow:inset 0 0 0 4px #e6e0d2}
  .activity-rail{grid-template-columns:1fr}.palette-grid{grid-template-columns:repeat(2,1fr)}
  .footer-nav{flex-direction:column}
}
@media(prefers-reduced-motion:reduce){
  *,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}
}