.cave{--cave-bg: #1b2434;--cave-wall: #4a5470;--cave-wall-deep: #333b52;--cave-wall-edge: #232a3c;--cave-wall-top: #6b7594;--cave-crack: #2c3448;--cave-earth: #8d6b45;--cave-earth-grain: #5c4227;--cave-earth-light: #a98457;--cave-tunnel: #212b3e;--cave-grid: rgba(255, 255, 255, .045);--cave-rock-light: #d7dde6;--cave-rock-mid: #9aa3b0;--cave-rock-dark: #59626f;--cave-rock-rim: #3e4652;--cave-res-light: #a9f0e4;--cave-res-mid: #35b6a3;--cave-res-dark: #14746a;--cave-res-rim: #0d5a52;--cave-rune: #f2fffc;--cave-crystal-light: #c9f0ff;--cave-crystal-dark: #4fb4ec;--cave-crystal-glow: rgba(127, 214, 255, .28);--cave-exit-frame: #7c8497;--cave-exit-opening: #111826;--cave-exit-light: #ffd166;--cave-exit-light-deep: #ff9f3d;--cave-player: #ff9b3d;--cave-player-dark: #c96f1f;--cave-player-face: #ffe1bd;--cave-player-helmet: #ffcf5a;--cave-player-lamp: #fff7b0;--cave-warn: #ffab52;--cave-res-glow: #6ff2df;--cave-res-b-light: #e9c8fb;--cave-res-b-mid: #a557d6;--cave-res-b-dark: #63278d;--cave-res-b-rim: #4a1a6e;--cave-rune-b: #fbf0ff;--cave-res-b-glow: #d98cff;--cave-vein: rgba(20, 26, 40, .45);--cave-fleck: rgba(20, 26, 40, .22);--cave-fleck-light: rgba(255, 255, 255, .07);--cave-shade: rgba(4, 8, 16, .55);--cave-vignette: rgba(4, 8, 16, .32);--cave-crust: rgba(60, 40, 22, .5);--cave-pebble: #6e5236;--cave-lamp: rgba(255, 236, 170, .22);--cave-aura: rgba(120, 236, 214, .32);--cave-aura-b: rgba(217, 140, 255, .28);max-width:760px}:root{--site-width: 1700px;--site-gutter: 40px;--surface-2: #18203a;--surface-3: var(--icon-bg);--accent-soft: color-mix(in srgb, var(--accent) 14%, transparent);--good-soft: color-mix(in srgb, var(--good) 11%, transparent);--warn: #e3b25a;background:var(--bg);color:var(--text)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button,input,textarea{font:inherit}button{color:inherit}.editor-app,.test-app{width:min(var(--site-width),calc(100% - var(--site-gutter)));margin:0 auto;padding:20px 0 32px}.editor-header,.test-header{display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:24px}.eyebrow{margin:0 0 8px;color:var(--game-cave);font-size:.75rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase}h1,h2,p{margin-top:0}h1{margin-bottom:8px;font-size:clamp(1.7rem,3vw,2.55rem);font-weight:800;line-height:1.08;letter-spacing:-.035em}h2{margin-bottom:3px;font-size:1rem;font-weight:800}.lede{max-width:760px;margin:0;color:color-mix(in srgb,var(--text) 78%,var(--muted));line-height:1.55}.size-badge{flex:0 0 auto;padding:10px 14px;border:1px solid var(--cell-border);border-radius:999px;background:var(--surface);color:var(--text);font-weight:800;font-variant-numeric:tabular-nums}.editor-layout{display:grid;grid-template-columns:250px minmax(440px,1fr) 340px;gap:16px;align-items:start}.editor-panel,.editor-workspace,.test-controls{border:1px solid var(--cell-border);border-radius:18px;background:color-mix(in srgb,var(--surface) 94%,transparent);box-shadow:0 18px 50px -30px #000000b3}.editor-panel{padding:16px}.editor-workspace{padding:14px;min-width:0}.panel-heading{display:flex;gap:10px;align-items:flex-start}.panel-heading p{margin:0;color:var(--muted);font-size:.78rem;line-height:1.4}.panel-heading.compact{margin-bottom:12px}.step-number{display:grid;place-items:center;flex:0 0 28px;width:28px;height:28px;border-radius:8px;background:var(--surface-3);color:var(--game-cave);font-size:.7rem;font-weight:900}.panel-divider{height:1px;margin:18px 0;background:var(--cell-border)}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:14px}.tool-button{display:flex;align-items:center;min-width:0;gap:8px;padding:7px;border:1px solid var(--cell-border);border-radius:10px;background:var(--surface-2);color:var(--muted);text-align:left;font-size:.77rem;cursor:pointer}.tool-button:hover{border-color:var(--field-border);color:var(--text)}.tool-button.is-active{border-color:var(--accent);background:var(--accent-soft);color:var(--text);box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--accent) 45%,transparent)}.tool-swatch{flex:0 0 30px;width:30px;height:30px;border:1px solid rgba(255,255,255,.12);border-radius:7px;background-color:#161e2e;background-position:center;background-size:cover;color:#fff;display:grid;place-items:center;font-size:1.25rem}.size-form{display:grid;grid-template-columns:1fr auto 1fr;gap:8px;align-items:end;margin:12px 0 10px}.size-form span{padding-bottom:9px;color:var(--muted)}label{display:grid;gap:5px;color:var(--muted);font-size:.75rem;font-weight:700}input,textarea{width:100%;border:1px solid var(--input-border);border-radius:10px;background:var(--field-bg);color:var(--text);outline:none}input{padding:8px 9px}textarea{min-height:132px;padding:10px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.72rem;line-height:1.45}input:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}.button,.icon-button{border:1px solid var(--cell-border);border-radius:12px;background:var(--surface-2);color:var(--text);font-weight:750;cursor:pointer}.button{min-height:44px;padding:10px 12px}.button:hover:not(:disabled),.icon-button:hover:not(:disabled){transform:translateY(-1px);filter:brightness(1.08)}.button:disabled,.icon-button:disabled{opacity:.45;cursor:not-allowed}.button.primary{border-color:var(--accent);background:var(--accent);color:var(--accent-text);font-weight:800}.button.accent{border-color:var(--accent);background:transparent;color:var(--text)}.button.secondary{background:var(--surface-3)}.button.ghost{background:transparent;color:var(--muted)}.button.ghost:hover:not(:disabled){color:var(--text)}.button.full{width:100%;margin-top:8px}.button:focus-visible,.icon-button:focus-visible,.tool-button:focus-visible,.direction-pad button:focus-visible,.editor-grid [data-cell]:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.workspace-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px}.workspace-bar p{margin:0;color:var(--muted);font-size:.8rem}.workspace-bar 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[data-char=O],.editor-grid [data-char=R],.editor-grid [data-char=S],.editor-grid [data-char="*"],.editor-grid [data-char="+"],.editor-grid [data-char=E]{cursor:grab}.editor-grid.is-dragging,.editor-grid.is-dragging [data-cell]{cursor:grabbing}.editor-grid [data-cell].is-drag-source{opacity:.35}.editor-grid [data-cell].is-drop-ok{box-shadow:inset 0 0 0 3px var(--good);z-index:1}.editor-grid [data-cell].is-drop-bad{box-shadow:inset 0 0 0 3px var(--danger);z-index:1}.drag-ghost{position:fixed;z-index:20;transform:translate(-50%,-50%) scale(1.08);border-radius:6px;background-position:center;background-repeat:no-repeat;opacity:.9;box-shadow:0 6px 18px #00000080;pointer-events:none}.drag-status{min-height:1.3em;margin:6px 3px 0;color:var(--text);font-size:.78rem}.drag-status.is-error{color:var(--danger)}.group-status{display:grid;gap:5px;margin:10px 0 0;padding:0;list-style:none;font-size:.78rem}.group-status li{display:flex;align-items:center;gap:8px;padding:6px 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strong{color:var(--text)}[data-char="#"]{background-image:url(/cave/wall.webp)}[data-char="."]{background-image:url(/cave/earth.webp)}[data-char=_]{background-image:url(/cave/tunnel.webp)}[data-char=P]{background-image:url(/cave/player.webp),url(/cave/tunnel.webp);background-size:contain,cover}[data-char=O]{background-image:url(/cave/rock.webp),url(/cave/tunnel.webp);background-size:contain,cover}[data-char=R]{background-image:url(/cave/rock-resonance.webp),url(/cave/tunnel.webp);background-size:contain,cover}[data-char=S]{position:relative;background-image:url(/cave/tunnel.webp)}[data-char=S]:before{content:"";position:absolute;inset:0;background:url(/cave/rock-resonance.webp) center / contain no-repeat;filter:hue-rotate(118deg) saturate(1.08)}[data-char=S]:after{content:"";position:absolute;right:22%;bottom:18%;width:14%;height:16%;border-left:2px solid var(--cave-res-b-glow);border-right:2px solid var(--cave-res-b-glow);border-radius:2px}[data-char="*"]{background-image:url(/cave/crystal.webp),url(/cave/tunnel.webp);background-size:contain,cover}[data-char="+"]{background-image:url(/cave/crystal.webp),url(/cave/earth.webp);background-size:contain,cover}[data-char=E]{background-image:url(/cave/exit-closed.webp),url(/cave/tunnel.webp);background-size:contain,cover}.validation-list{display:grid;gap:7px;padding:0;margin:14px 0;list-style:none}.validation-list li{display:flex;gap:8px;align-items:flex-start;padding:8px 9px;border-radius:10px;font-size:.78rem;line-height:1.35}.validation-list li span{display:grid;place-items:center;flex:0 0 20px;width:20px;height:20px;border-radius:50%;font-size:.7rem;font-weight:900}.validation-error{background:color-mix(in srgb,var(--danger) 10%,transparent);color:#ffc7c1}.validation-error span{background:color-mix(in srgb,var(--danger) 20%,transparent);color:var(--danger)}.validation-hint{background:var(--good-soft);color:#c4efd6}.validation-hint 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0;color:var(--muted);font-size:.8rem}.draft-status.is-saved{color:var(--good)}.draft-status.is-error{color:var(--danger)}.draft-list{display:grid;gap:6px;margin:0 0 12px;padding:0;list-style:none}.draft-empty{color:var(--muted);font-size:.76rem}.draft-item{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:7px 8px;border:1px solid var(--cell-border);border-radius:10px;background:var(--surface-2)}.draft-item.is-current{border-color:var(--accent);background:var(--accent-soft)}.draft-text{min-width:0}.draft-title{margin:0;overflow:hidden;color:var(--text);font-size:.8rem;font-weight:700;text-overflow:ellipsis;white-space:nowrap}.draft-open{color:var(--accent);font-size:.7rem;font-weight:600}.draft-meta{margin:2px 0 0;color:var(--muted);font-size:.7rem}.draft-actions{display:flex;flex:0 0 auto;gap:5px}.draft-actions .icon-button{padding:5px 8px;font-size:.72rem}.draft-actions 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2px;padding:9px 11px;border:1px solid var(--cell-border);border-radius:10px;background:var(--field-bg);color:var(--muted);font-size:.8rem;font-weight:700;line-height:1.35}.submit-state[data-state=ready],.submit-state[data-state=submitted]{border-color:color-mix(in srgb,var(--good) 60%,transparent);background:var(--good-soft);color:#c4efd6}.submit-state[data-state=stale]{border-color:color-mix(in srgb,var(--warn) 60%,transparent);background:color-mix(in srgb,var(--warn) 10%,transparent);color:#f3d9a4}a.button:not([hidden]){display:block;box-sizing:border-box;min-height:44px;padding:12px;text-align:center;text-decoration:none;font-size:.85rem;line-height:20px}.test-solved:not([hidden]){display:grid;gap:8px;margin:4px 0 12px;padding:10px 11px;border:1px solid color-mix(in srgb,var(--good) 60%,transparent);border-radius:12px;background:var(--good-soft)}.test-solved p{margin:0;color:#c4efd6;font-size:.82rem;font-weight:700;line-height:1.35}.test-app.cave{max-width:none}.test-stage{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:16px;align-items:start}.test-status{display:flex;flex-wrap:wrap;gap:8px 20px;margin:0 0 12px;padding:10px 14px;border:1px solid var(--cell-border);border-radius:12px;background:var(--surface)}.test-controls{display:grid;gap:12px;padding:16px}.test-controls p{margin:0;color:var(--muted);line-height:1.45}.test-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.direction-pad{display:grid;grid-template-columns:repeat(3,52px);grid-template-rows:repeat(2,52px);gap:6px;justify-content:center}.direction-pad button{border:1px solid var(--cell-border);border-radius:12px;background:var(--surface-3);color:var(--text);font-size:1.15rem;cursor:pointer}.direction-pad [data-dir=up]{grid-column:2}.direction-pad [data-dir=left]{grid-column:1;grid-row:2}.direction-pad [data-dir=down]{grid-column:2;grid-row:2}.direction-pad [data-dir=right]{grid-column:3;grid-row:2}.dig-button[aria-pressed=true],.dig-button.is-active{border-color:var(--cave-earth-light);color:var(--cave-earth-light)}.test-note{font-size:.78rem}@media(max-width:1200px){.editor-layout{grid-template-columns:230px minmax(420px,1fr)}.checks-panel{grid-column:1 / -1}}@media(max-width:820px){:root{--site-width: 720px;--site-gutter: 20px}.editor-app,.test-app{padding-top:18px}.editor-header,.test-header{display:grid;gap:12px}.editor-layout,.test-stage{grid-template-columns:1fr}.checks-panel{grid-column:auto}.tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.tool-button{display:grid;justify-items:center;text-align:center}.editor-grid-wrap{max-height:65vh}}@media(max-width:520px){.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.primary-actions,.meta-grid{grid-template-columns:1fr}.workspace-bar{align-items:flex-start;flex-direction:column}}.submit-contest-minors{display:block;margin:4px 0}