:root{color-scheme:dark;--bg:#0a1018;--text:#e7eef4;--muted:#93a5b8;--line:#283544;--red:#ff626b;--green:#63e2ac;--blue:#60aaff;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 50% 0%,#182331,transparent 65%),var(--bg);color:var(--text);min-height:100vh}button,a{font:inherit;color:inherit}button{cursor:pointer}button:disabled{opacity:.42;cursor:default}button:focus-visible,a:focus-visible,canvas:focus-visible{outline:2px solid #d5f6ee;outline-offset:3px}
.shell{max-width:1120px;margin:auto;padding:0 22px 24px}.topbar{min-height:68px;display:flex;align-items:center;gap:18px}.brand{color:#b2e6ef;text-decoration:none;font-size:15px;font-weight:700;letter-spacing:.08em;white-space:nowrap}.brand span{color:#7c8c9e;font-weight:400}.mission-heading{display:flex;align-items:baseline;gap:10px;flex:1}h1{font-size:16px;font-weight:500;margin:0}.mission-meta{font:9px ui-monospace,monospace;color:var(--muted)}.status-grid{display:flex;gap:19px;white-space:nowrap}.stat{font:13px ui-monospace,monospace}.stat strong{font-weight:500}.stat-label{color:#94a9bc;margin-right:4px}.stat:first-child .stat-label{color:#ff8e93}.stat:nth-child(2) .stat-label{color:#dfc591}.stat-dim{color:#7a8f9f;font-size:11px}.text-button,.icon-button{border:0;background:none;color:#b9c9d9;min-height:44px}.text-button{font-size:11px}.icon-button{width:36px;font-size:16px}
.game-layout{display:flex;flex-direction:column;gap:12px}.board-column{min-width:0}.board-frame{position:relative;background:#0d1820;overflow:hidden;border:1px solid #344451;border-radius:12px;box-shadow:0 18px 55px #0005}.board-frame canvas{display:block;width:100%;height:auto;aspect-ratio:4/3;touch-action:none}.control-panel{display:grid;grid-template-columns:minmax(0,1fr) auto auto;gap:12px;align-items:center}.tower-shop{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.tower-card{display:flex;gap:10px;align-items:center;text-align:left;padding:9px 12px;min-height:54px;border:1px solid var(--line);border-radius:9px;background:#111d27}.tower-card:hover,.tower-card.selected{background:#1c2c37;border-color:#b4d1d6}.tower-card[data-color=red]{--accent:var(--red)}.tower-card[data-color=green]{--accent:var(--green)}.tower-card[data-color=blue]{--accent:var(--blue)}.tower-icon{color:var(--accent);width:27px;flex:none;font-size:24px;text-align:center;text-shadow:0 0 14px var(--accent)}.tower-details{display:flex;flex-direction:column;gap:3px;min-width:0}.tower-details strong{font-size:12px;font-weight:500}.tower-details small{font:10px ui-monospace,monospace;color:var(--muted)}.wave-section{display:flex;align-items:center;gap:12px}.preview-wrap{display:flex;flex-direction:column;gap:4px}#enemy-count{font:8px ui-monospace,monospace;color:var(--muted)}.wave-preview{display:flex;gap:3px}.preview-pixel{height:8px;width:8px;border-radius:2px;color:transparent;font-size:0;background:#899cac}.preview-pixel.red{background:var(--red)}.preview-pixel.green{background:var(--green)}.preview-pixel.blue{background:var(--blue)}.preview-pixel.purple{background:#b77eff}.preview-pixel.yellow{background:#f0cf72}.preview-pixel.cyan{background:#75d9e5}.preview-pixel.white{background:#f5f6ef}.preview-more{font-size:9px;color:var(--muted)}.launch-button{display:flex;gap:8px;align-items:center;min-height:54px;padding:10px 13px;background:#badcce;color:#15312b;border:0;border-radius:9px;white-space:nowrap}.launch-button span:nth-child(2){display:flex;flex-direction:column;gap:4px}.launch-button b{font-size:10px;font-weight:700}.launch-button small{display:none}.utility-row{display:flex;gap:4px}.utility-button{border:0;border-radius:8px;background:#17232f;min-width:40px;min-height:44px;padding:8px;font:9px ui-monospace,monospace;color:#b4c3d2}.utility-button span{font-size:13px}.selection-card{grid-column:1/-1;padding:0;min-height:0}.selection-card:empty,.selection-card.hidden{display:none}.selection-empty,.selected-info{display:flex;align-items:center;gap:12px;font-size:11px;color:#b4c4d1}.selection-empty div,.selected-info div{display:flex;gap:9px;align-items:center}.selection-orb{font:12px ui-monospace,monospace}.selected-info strong,.selection-empty strong{font-size:10px;font-weight:500}.selected-actions{margin-left:auto;display:flex;gap:6px}.mini-button{border:1px solid #354957;border-radius:7px;background:#182c36;min-height:36px;padding:7px 12px;font-size:10px}.mini-button.danger{color:#eeacac}.board-footer{display:flex;justify-content:space-between;gap:12px;font:9px ui-monospace,monospace;color:#849bad;line-height:1.5}
.overlay{position:absolute;z-index:3;inset:0;background:#08121bdd;backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center;padding:18px}.overlay.hidden{display:none}.dialog{width:min(460px,100%);max-height:100%;overflow:auto;border:1px solid #48616e;border-radius:14px;background:#14232e;padding:24px;box-shadow:0 20px 70px #0009}.dialog-eyebrow{font:9px ui-monospace,monospace;color:#a8e6d1}.dialog h2{font-size:24px;margin:10px 0}.dialog p,.help-list{font-size:12px;line-height:1.7;color:#b4c7d2}.help-list{padding-left:18px}.mission-list{display:grid;gap:8px;margin-top:18px}.mission-choice{display:flex;justify-content:space-between;text-align:left;border:1px solid #385363;border-radius:9px;background:#1a303c;padding:12px;min-height:48px}.mission-choice strong{font-size:12px}.mission-choice small{display:block;font-size:9px;color:#9db1c1;margin-top:5px}.dialog-actions{display:flex;justify-content:flex-end;margin-top:17px;gap:8px}.dialog-button{border:1px solid #486571;border-radius:8px;background:#263b46;min-height:44px;padding:9px 12px;font-size:11px}.dialog-button.primary{background:#b7ddcf;color:#102c23}.toast{position:absolute;z-index:4;left:50%;bottom:14px;transform:translateX(-50%);padding:9px 14px;border-radius:9px;background:#dce9e3;color:#163128;font-size:12px;text-align:center;max-width:94%}
@media(min-width:1000px) and (min-height:750px){.shell{max-width:min(1120px,calc((100dvh - 170px)*4/3 + 44px))}}
@media(max-width:850px){.mission-meta{display:none}.topbar{gap:12px}.control-panel{grid-template-columns:1fr auto}.tower-shop{grid-column:1/-1}.wave-section{justify-content:space-between}.preview-wrap{flex:1}.utility-row{justify-self:end}}
@media(max-width:520px){.shell{padding:0 10px 18px}.topbar{gap:9px;flex-wrap:wrap;padding:8px 0}.brand{font-size:12px}.mission-heading{justify-content:flex-end}h1{font-size:13px}.status-grid{order:3;flex:1;gap:20px}.topbar .text-button,.topbar .icon-button{order:3;min-height:36px}.stat{font-size:12px}.game-layout{gap:10px}.board-frame{border-radius:8px}.tower-shop{gap:5px}.tower-card{padding:8px 5px;gap:4px}.tower-icon{width:22px;font-size:21px}.tower-details strong{font-size:10px}.tower-details small{font-size:8px}.preview-wrap{display:none}.launch-button{min-height:44px}.utility-button{padding:7px}.board-footer span:first-child{display:none}.board-footer{justify-content:center;font-size:8px}.selected-info,.selection-empty{flex-wrap:wrap;gap:8px}.selected-info div,.selection-empty div{flex-wrap:wrap;gap:5px}.selected-info strong{font-size:9px}.selected-actions{margin-left:auto}.dialog{padding:15px}.dialog h2{font-size:20px}.overlay{padding:9px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}