:root{color-scheme:light;--bg: #eef0f8;--bg-accent-1: rgba(99, 102, 241, .12);--bg-accent-2: rgba(236, 72, 153, .1);--bg-accent-3: rgba(34, 197, 94, .08);--surface: rgba(255, 255, 255, .72);--surface-solid: #ffffff;--surface-hover: rgba(255, 255, 255, .92);--border: rgba(255, 255, 255, .65);--border-subtle: rgba(26, 26, 46, .06);--text: #141428;--text-muted: #6b7280;--title-gradient: linear-gradient(135deg, #141428 0%, #4338ca 100%);--overlay-bg: rgba(20, 20, 40, .5);--grid-line: #e8e8ef;--accent: #6366f1;--accent-hover: #4f46e5;--accent-glow: rgba(99, 102, 241, .35);--success: #10b981;--success-glow: rgba(16, 185, 129, .35);--shadow-sm: 0 2px 8px rgba(20, 20, 40, .06);--shadow: 0 8px 32px rgba(20, 20, 40, .1);--shadow-lg: 0 20px 60px rgba(20, 20, 40, .14);--canvas-bg: #fafafc;--canvas-bg-stop: #ffffff;--canvas-cell-empty: #f0f0f5;--canvas-dot-highlight: #ffffff;--canvas-dot-shadow: rgba(20, 20, 40, .18);--gear-scene-bg: #e8eaf0;--gear-scene-bg-stop: #f5f6fa;--gear-wall-brass: #a8845a;--gear-wall-brass-highlight: #c4a070;--gear-wall-steel: #9090a0;--gear-wall-steel-highlight: #b0b0bc;--gear-rail: #c8cad4;--gear-rail-highlight: #d4d6e0;--gear-steel: #a8a8b4;--gear-steel-highlight: #c0c0cc;--gear-vignette: rgba(40, 40, 60, .08);--scene-3d-bg: #eef0f8;--scene-3d-fog: #eef0f8;--scene-3d-vignette: rgba(20, 20, 40, .12);--scene-3d-accent: rgba(99, 102, 241, .1);--overlay-glass-bg: rgba(255, 255, 255, .72);--overlay-glass-border: rgba(26, 26, 46, .08);--overlay-glass-text: #141428;--overlay-glass-bg-hover: rgba(255, 255, 255, .88);--word-cell-bg: rgba(255, 255, 255, .55);--word-cell-border: rgba(26, 26, 46, .1);--overlay-bar-top: linear-gradient(180deg, rgba(255, 255, 255, .82) 0%, transparent 100%);--overlay-bar-bottom: linear-gradient(0deg, rgba(255, 255, 255, .88) 0%, transparent 100%);--radius: 16px;--radius-sm: 12px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}[data-theme=dark]{color-scheme:dark;--bg: 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#1a1a24;--surface-hover: rgba(36, 36, 48, .92);--border: rgba(255, 255, 255, .08);--border-subtle: rgba(255, 255, 255, .06);--text: #f0f0f5;--text-muted: #9ca3af;--title-gradient: linear-gradient(135deg, #f0f0f5 0%, #818cf8 100%);--overlay-bg: rgba(0, 0, 0, .65);--grid-line: #2a2a35;--accent-glow: rgba(99, 102, 241, .45);--success-glow: rgba(16, 185, 129, .4);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .35);--shadow: 0 8px 32px rgba(0, 0, 0, .45);--shadow-lg: 0 20px 60px rgba(0, 0, 0, .55);--canvas-bg: #14141c;--canvas-bg-stop: #1e1e28;--canvas-cell-empty: #2a2a35;--canvas-dot-highlight: #e8e8ef;--canvas-dot-shadow: rgba(0, 0, 0, .45);--gear-scene-bg: #0a0a12;--gear-scene-bg-stop: #12121c;--gear-wall-brass: #8a6a3a;--gear-wall-brass-highlight: #6b4f2a;--gear-wall-steel: #555568;--gear-wall-steel-highlight: #3a3a48;--gear-rail: #2a2a34;--gear-rail-highlight: #4a4a58;--gear-steel: #6a6a78;--gear-steel-highlight: #8a8a98;--gear-vignette: rgba(0, 0, 0, .55);--scene-3d-bg: #08080f;--scene-3d-fog: #08080f;--scene-3d-vignette: rgba(0, 0, 0, .55);--scene-3d-accent: rgba(99, 102, 241, .12);--overlay-glass-bg: rgba(255, 255, 255, .08);--overlay-glass-border: rgba(255, 255, 255, .1);--overlay-glass-text: rgba(255, 255, 255, .9);--overlay-glass-bg-hover: rgba(255, 255, 255, .14);--word-cell-bg: rgba(255, 255, 255, .06);--word-cell-border: rgba(255, 255, 255, .14);--overlay-bar-top: linear-gradient(180deg, rgba(8, 8, 15, .75) 0%, transparent 100%);--overlay-bar-bottom: linear-gradient(0deg, rgba(8, 8, 15, .8) 0%, transparent 100%)}}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100%;font-family:Plus Jakarta Sans,system-ui,-apple-system,Segoe 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var(--accent-glow);display:flex;align-items:center;justify-content:center;flex-shrink:0;overflow:hidden}.brand-icon img{width:100%;height:100%;display:block}.top-bar-actions{display:flex;align-items:center;gap:8px}#theme-btn .theme-icon{display:none}#theme-btn[data-theme-mode=light] .theme-icon--light,#theme-btn[data-theme-mode=dark] .theme-icon--dark,#theme-btn[data-theme-mode=system] .theme-icon--system{display:block}.top-bar h1{margin:0;font-size:1.25rem;font-weight:700;letter-spacing:-.02em;background:var(--title-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.level-nav-row{display:flex;align-items:center;gap:4px;margin-top:2px;max-width:100%}.top-bar 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env(safe-area-inset-left,0px));background:var(--overlay-bar-top)}.game-overlay--bottom{bottom:0;justify-content:center;gap:12px;padding:10px calc(16px + env(safe-area-inset-right,0px)) calc(14px + var(--safe-bottom)) calc(16px + env(safe-area-inset-left,0px));background:var(--overlay-bar-bottom)}.overlay-btn{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:var(--overlay-glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--overlay-glass-border);color:var(--overlay-glass-text);transition:background .15s ease}.overlay-btn:hover{background:var(--overlay-glass-bg-hover)}.overlay-btn:disabled{opacity:.35;cursor:not-allowed}.overlay-btn:disabled:hover{background:var(--overlay-glass-bg)}.overlay-level{flex:1;min-width:0;text-align:center;font-size:.875rem;font-weight:600;line-height:1.25;color:var(--overlay-glass-text);letter-spacing:-.01em;padding:0 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var(--safe-bottom))}.settings-overlay,.win-overlay{padding:12px;align-items:flex-start}.settings-modal,.win-modal{border-radius:18px;padding:20px 16px 16px;max-height:calc(100dvh - 24px)}.overlay-btn{width:40px;height:40px}#prev-level-btn,#next-level-nav-btn{width:32px;height:32px;border-radius:10px}.overlay-level{font-size:.8rem;padding:0 4px}.overlay-action{min-width:56px;min-height:44px;padding:7px 8px;gap:2px;font-size:.625rem}.word-shell{padding:calc(12px + var(--safe-top)) 12px calc(16px + var(--safe-bottom))}.word-topic-grid{grid-template-columns:repeat(auto-fill,minmax(132px,1fr));gap:10px}.top-bar{flex-wrap:wrap;row-gap:8px}.top-bar h1{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.brand,.brand-text{display:contents}.brand-icon{width:36px;height:36px;border-radius:11px}.level-nav-row{order:10;flex:1 1 100%;max-width:100%;margin-top:0}.top-bar 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env(safe-area-inset-right,0px));z-index:25;margin:0;padding:12px;border-radius:16px;background:#08080fd1;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--overlay-glass-border);box-shadow:var(--shadow-lg)}.level-nav--overlay .level-chip{background:var(--overlay-glass-bg);border-color:var(--overlay-glass-border);color:var(--overlay-glass-text)}.level-nav--overlay .level-chip.active{background:linear-gradient(135deg,var(--accent) 0%,#7c3aed 100%);color:#fff}.app-shell--3d #theme-btn .theme-icon{display:none}.app-shell--3d #theme-btn[data-theme-mode=light] .theme-icon--light,.app-shell--3d #theme-btn[data-theme-mode=dark] .theme-icon--dark,.app-shell--3d #theme-btn[data-theme-mode=system] .theme-icon--system{display:block}.word-shell{position:relative;z-index:1;max-width:560px;margin:0 auto;padding:calc(16px + var(--safe-top)) 16px calc(24px + var(--safe-bottom));min-height:100dvh}.word-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.word-header-title h1{margin:0;font-size:1.35rem;font-weight:700;background:var(--title-gradient);-webkit-background-clip:text;background-clip:text;color:transparent}.word-header-title p{margin:2px 0 0;font-size:.85rem;color:var(--text-muted)}.word-quick-start{display:flex;flex-direction:column;align-items:flex-start;gap:4px;width:100%;margin-bottom:16px;padding:14px 16px;border:1px solid var(--border-subtle);border-radius:var(--radius);background:linear-gradient(135deg,var(--accent) 0%,#7c3aed 100%);color:#fff;font:inherit;cursor:pointer;box-shadow:var(--shadow);transition:transform .15s ease}.word-quick-start:active{transform:scale(.98)}.word-quick-start-label{font-size:.75rem;opacity:.85;text-transform:uppercase;letter-spacing:.04em}.word-quick-start-topic{font-size:1.05rem;font-weight:600}.word-filters{display:flex;gap:8px;margin-bottom:16px;overflow-x:auto}.word-filter{flex-shrink:0;padding:8px 14px;border:1px solid var(--border-subtle);border-radius:999px;background:var(--surface);color:var(--text-muted);font:inherit;font-size:.85rem;cursor:pointer;transition:background .15s,color .15s}.word-filter.active{background:var(--accent);border-color:var(--accent);color:#fff}.word-topic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}.word-topic-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:6px;padding:16px;border:1px solid var(--border-subtle);border-radius:var(--radius);background:var(--surface-solid);box-shadow:var(--shadow-sm);font:inherit;text-align:left;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease;overflow:hidden}.word-topic-card:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow)}.word-topic-card--soon{opacity:.55;cursor:not-allowed}.word-topic-icon{font-size:2rem;line-height:1}.word-topic-name{font-weight:600;font-size:.95rem;color:var(--text)}.word-topic-progress{font-size:.8rem;color:var(--text-muted)}.word-topic-bar{position:absolute;bottom:0;left:0;height:3px;width:var(--progress, 0%);background:linear-gradient(90deg,var(--success) 0%,var(--accent) 100%);border-radius:0 2px 0 0}.word-labels-layer{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:15;overflow:hidden}.word-label{position:absolute;transform:translate(-50%,-50%);display:flex;align-items:center;justify-content:center;padding:4px 6px;border-radius:10px;background:var(--word-cell-bg);border:1px solid var(--word-cell-border);color:var(--text);font-weight:600;text-align:center;line-height:1.2;white-space:normal;word-break:break-word;-webkit-hyphens:auto;hyphens:auto;box-sizing:border-box;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;max-width:none;min-width:0;min-height:0;overflow:hidden}.word-label--source,.word-label--target{transform:translate(-50%,-50%);text-align:center}.app-shell--word:not(.app-shell--3d) .scene-container{position:relative}.app-shell--word.app-shell--3d .scene-container{position:absolute;top:0;right:0;bottom:0;left:0}.level-nav--word .level-chip{min-width:2.5rem}.app-shell--word:not(.app-shell--3d) .level-nav--word{position:absolute;left:calc(12px + env(safe-area-inset-left,0px));right:calc(12px + env(safe-area-inset-right,0px));bottom:calc(76px + var(--safe-bottom));z-index:21;margin:0;padding:4px 2px 8px}.win-modal--words .word-result-stats{margin:0 0 20px;text-align:center}.win-modal--words .word-result-stats p{margin:6px 0;color:var(--text-muted)}.win-modal--words .word-result-stats strong{color:var(--text)}.word-mode-link{margin-top:8px;width:100%;color:var(--accent);border-color:var(--accent)}.word-error{padding:48px 24px;text-align:center;color:var(--text-muted)}.level-picker-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:110;background:var(--overlay-bg);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:stretch;justify-content:center;padding:calc(12px + var(--safe-top)) 12px calc(12px + var(--safe-bottom));animation:fade-in .25s ease}.level-picker-modal{display:flex;flex-direction:column;width:min(100%,520px);max-height:100%;background:var(--surface-solid);border-radius:20px;border:1px solid var(--border);box-shadow:var(--shadow-lg);overflow:hidden;animation:slide-up .35s cubic-bezier(.34,1.4,.64,1)}.level-picker-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:18px 20px 12px;flex-shrink:0}.level-picker-header h2{margin:0;font-size:1.25rem;font-weight:700}.level-picker-close{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-sm);background:var(--surface);border:1px solid var(--border-subtle);color:var(--text-muted);cursor:pointer;transition:background .15s ease,color .15s ease}.level-picker-close:hover{background:var(--surface-hover);color:var(--text)}.level-picker-tabs{display:flex;gap:8px;padding:0 16px 12px;flex-shrink:0}.level-picker-tab{flex:1;min-height:44px;padding:10px 14px;border-radius:var(--radius-sm);background:var(--surface);border:1px solid var(--border-subtle);font-size:.9375rem;font-weight:600;color:var(--text-muted);cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.level-picker-tab:hover{background:var(--surface-hover);color:var(--text)}.level-picker-tab.active{background:linear-gradient(135deg,var(--accent) 0%,#7c3aed 100%);border-color:transparent;color:#fff;box-shadow:0 4px 16px var(--accent-glow)}.level-picker-body{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:0 16px 20px}.level-picker-panel[hidden]{display:none!important}.level-picker-filters{display:flex;flex-direction:column;gap:14px;margin-bottom:16px;position:sticky;top:0;z-index:2;background:var(--surface-solid);padding-bottom:8px}.level-picker-filter-group{display:flex;flex-direction:column;gap:8px}.level-picker-filter-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}.level-picker-filter-hint{margin:0;font-size:.8125rem;color:var(--text-muted);line-height:1.35}.level-picker-chips{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px;scrollbar-width:none;-webkit-overflow-scrolling:touch}.level-picker-chips::-webkit-scrollbar{display:none}.level-picker-chips--wrap{flex-wrap:wrap;overflow-x:visible}.level-picker-chip{flex:0 0 auto;min-height:36px;padding:6px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--border-subtle);font-size:.8125rem;font-weight:600;color:var(--text);white-space:nowrap;cursor:pointer;transition:background .15s ease,border-color .15s ease,box-shadow .15s ease}.level-picker-chip:hover{background:var(--surface-hover)}.level-picker-chip.active{background:#6366f11f;border-color:var(--accent);color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.level-picker-chip--tier.active{background:linear-gradient(135deg,var(--accent) 0%,#7c3aed 100%);border-color:transparent;color:#fff;box-shadow:0 2px 12px var(--accent-glow)}.level-picker-sections{display:flex;flex-direction:column;gap:20px}.level-picker-section-title{display:flex;align-items:center;gap:8px;margin:0 0 10px;font-size:.9375rem;font-weight:700}.level-picker-section-icon{font-size:1.1rem;line-height:1}.level-picker-section-meta{margin-left:auto;font-size:.75rem;font-weight:600;color:var(--text-muted);background:var(--surface);border:1px solid var(--border-subtle);border-radius:999px;padding:2px 8px}.level-picker-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(52px,1fr));gap:8px}.level-picker-cell{position:relative;aspect-ratio:1;min-height:48px;border-radius:var(--radius-sm);background:var(--surface);border:1px solid var(--border-subtle);font-size:.875rem;font-weight:700;font-variant-numeric:tabular-nums;cursor:pointer;transition:transform .12s ease,box-shadow .12s ease,background .12s ease}.level-picker-cell:hover{background:var(--surface-hover);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.level-picker-cell.active{background:linear-gradient(135deg,var(--accent) 0%,#7c3aed 100%);border-color:transparent;color:#fff;box-shadow:0 4px 14px var(--accent-glow)}.level-picker-cell.completed:not(.active){border-color:var(--success)}.level-picker-cell-check{position:absolute;top:3px;right:4px;font-size:.625rem;color:var(--success);line-height:1}.level-picker-cell.active .level-picker-cell-check{color:#ffffffe6}.level-picker-empty,.level-picker-loading,.level-picker-words-intro{margin:0 0 16px;font-size:.875rem;color:var(--text-muted);line-height:1.45}.level-picker-topics{display:flex;flex-direction:column;gap:10px}.level-picker-topics-soon{display:flex;flex-direction:column;gap:10px;margin-top:8px;padding-top:12px;border-top:1px solid var(--border-subtle)}.level-picker-topic{display:flex;align-items:center;gap:14px;width:100%;min-height:64px;padding:12px 14px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border-subtle);text-align:left;cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .12s ease}.level-picker-topic:hover:not(:disabled){background:var(--surface-hover);border-color:var(--accent);transform:translateY(-1px)}.level-picker-topic--soon{opacity:.55;cursor:not-allowed}.level-picker-topic-icon{font-size:1.75rem;line-height:1;flex-shrink:0}.level-picker-topic-body{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}.level-picker-topic-name{font-size:.9375rem;font-weight:700}.level-picker-topic-meta{font-size:.8125rem;color:var(--text-muted)}.level-picker-topic-arrow{font-size:1.125rem;color:var(--accent);flex-shrink:0}.level-picker-special{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-bottom:16px}.level-picker-special-card{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border-subtle);text-align:left;cursor:pointer;transition:background .15s ease,border-color .15s ease,transform .12s ease}.level-picker-special-card:hover{background:var(--surface-hover);border-color:var(--accent);transform:translateY(-1px)}.level-picker-special-icon{font-size:1.5rem;line-height:1;flex-shrink:0}.level-picker-special-body{display:flex;flex-direction:column;gap:2px;min-width:0}.level-picker-special-title{font-size:.875rem;font-weight:700}.level-picker-special-meta{font-size:.75rem;color:var(--text-muted)}.level-picker-collection-intro{margin:0 0 16px;font-size:.875rem;color:var(--text-muted);line-height:1.45}.level-picker-collection-intro strong{color:var(--text)}.level-picker-collection-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px}.collectible-card{display:flex;flex-direction:column;align-items:center;gap:6px;padding:10px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border-subtle);text-align:center}.collectible-card.unlocked{border-color:var(--accent)}.collectible-card-image{position:relative;width:72px;height:72px}.collectible-card-image img{width:100%;height:100%;object-fit:contain;border-radius:50%}.collectible-card.locked .collectible-card-image img{filter:grayscale(1) brightness(.5);opacity:.6}.collectible-card-lock{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:1.25rem}.collectible-card-name{font-size:.8125rem;font-weight:700;line-height:1.2}.collectible-card-threshold{font-size:.6875rem;color:var(--text-muted)}.collectible-card.unlocked .collectible-card-threshold{color:var(--success);font-weight:600}@media(max-width:480px){.level-picker-overlay{padding:var(--safe-top) 0 var(--safe-bottom);align-items:flex-end}.level-picker-modal{width:100%;max-height:calc(100dvh - var(--safe-top));border-radius:20px 20px 0 0}.level-picker-grid{grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:6px}}