:root{--bg-primary: #0b0e11;--bg-secondary: #12161c;--bg-tertiary: #1a1f27;--bg-hover: #1e2430;--border: rgba(255, 255, 255, .08);--text-primary: #eaecef;--text-secondary: #848e9c;--text-tertiary: #5e6673;--accent: #6366f1;--accent-hover: #818cf8;--green: #0ecb81;--green-bg: rgba(14, 203, 129, .1);--red: #f6465d;--yellow: #fcd535;color-scheme:dark;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.5;font-size:14px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:var(--bg-primary);color:var(--text-primary)}.mono{font-family:SF Mono,SFMono-Regular,Menlo,Consolas,monospace}.app{display:flex;flex-direction:column;min-height:100vh;align-items:center;justify-content:center;padding:24px}.puzzle-container{display:flex;flex-direction:column;align-items:center;gap:24px;max-width:480px;width:100%}.puzzle-header{text-align:center}.puzzle-title{font-size:32px;font-weight:800;letter-spacing:-.03em;background:linear-gradient(135deg,var(--accent),#a78bfa,#f472b6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.puzzle-subtitle{font-size:14px;color:var(--text-secondary);margin-top:4px}.puzzle-stats{display:flex;gap:24px;justify-content:center;flex-wrap:wrap}.puzzle-stat{display:flex;flex-direction:column;align-items:center;gap:2px}.puzzle-stat-label{font-size:10px;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.08em;font-weight:500}.puzzle-stat-value{font-size:20px;font-weight:700;color:var(--text-primary)}.puzzle-stat-value.accent{color:var(--accent)}.puzzle-win-banner{display:flex;align-items:center;gap:12px;padding:16px 24px;background:linear-gradient(135deg,#0ecb8126,#6366f126);border:1px solid rgba(14,203,129,.3);border-radius:12px;animation:win-pop .4s ease-out}@keyframes win-pop{0%{transform:scale(.8);opacity:0}50%{transform:scale(1.05)}to{transform:scale(1);opacity:1}}.puzzle-win-icon{font-size:28px}.puzzle-win-title{font-size:18px;font-weight:700;color:var(--green)}.puzzle-win-sub{font-size:13px;color:var(--text-secondary)}.puzzle-board{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;width:100%;max-width:400px;aspect-ratio:1;padding:10px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px}.puzzle-tile{display:flex;align-items:center;justify-content:center;border:none;border-radius:10px;cursor:pointer;transition:all .15s ease;background:var(--bg-tertiary);position:relative;aspect-ratio:1;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.puzzle-tile:hover:not(:disabled){background:var(--bg-hover);transform:scale(1.04)}.puzzle-tile:active:not(:disabled){transform:scale(.96)}.puzzle-tile-empty{background:transparent;cursor:default;border:2px dashed rgba(255,255,255,.06)}.puzzle-tile-correct{background:#0ecb811f;border:1px solid rgba(14,203,129,.25)}.puzzle-tile-hint{animation:hint-pulse .6s ease-in-out 2}@keyframes hint-pulse{0%,to{box-shadow:0 0 #6366f100}50%{box-shadow:0 0 0 6px #6366f166}}.puzzle-tile-won{animation:tile-celebrate .5s ease-out forwards}.puzzle-tile-won:nth-child(1){animation-delay:0s}.puzzle-tile-won:nth-child(2){animation-delay:.04s}.puzzle-tile-won:nth-child(3){animation-delay:.08s}.puzzle-tile-won:nth-child(4){animation-delay:.12s}.puzzle-tile-won:nth-child(5){animation-delay:.16s}.puzzle-tile-won:nth-child(6){animation-delay:.2s}.puzzle-tile-won:nth-child(7){animation-delay:.24s}.puzzle-tile-won:nth-child(8){animation-delay:.28s}.puzzle-tile-won:nth-child(9){animation-delay:.32s}.puzzle-tile-won:nth-child(10){animation-delay:.36s}.puzzle-tile-won:nth-child(11){animation-delay:.4s}.puzzle-tile-won:nth-child(12){animation-delay:.44s}.puzzle-tile-won:nth-child(13){animation-delay:.48s}.puzzle-tile-won:nth-child(14){animation-delay:.52s}.puzzle-tile-won:nth-child(15){animation-delay:.56s}.puzzle-tile-won:nth-child(16){animation-delay:.6s}@keyframes tile-celebrate{0%{transform:scale(1)}50%{transform:scale(1.12) rotate(5deg);background:#0ecb8140}to{transform:scale(1);background:#0ecb812e}}.puzzle-tile-number{font-size:clamp(18px,5vw,28px);font-weight:700;font-family:SF Mono,SFMono-Regular,Menlo,Consolas,monospace;color:var(--text-primary);pointer-events:none}.puzzle-controls{display:flex;gap:12px}.puzzle-btn{padding:12px 32px;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:all .15s}.puzzle-btn-primary{background:var(--accent);color:#fff}.puzzle-btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 16px #6366f14d}.puzzle-btn-secondary{background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border)}.puzzle-btn-secondary:hover:not(:disabled){background:var(--bg-hover);color:var(--text-primary)}.puzzle-btn:disabled{opacity:.4;cursor:not-allowed}.puzzle-legend{display:flex;gap:20px;justify-content:center;font-size:12px;color:var(--text-tertiary)}.puzzle-legend-item{display:flex;align-items:center;gap:6px}.puzzle-legend-swatch{width:14px;height:14px;border-radius:4px;background:var(--bg-tertiary)}.puzzle-legend-swatch.puzzle-legend-correct{background:#0ecb811f;border:1px solid rgba(14,203,129,.25)}@media(max-width:480px){.app{padding:16px}.puzzle-title{font-size:24px}.puzzle-stats{gap:16px}.puzzle-board{max-width:320px;gap:4px;padding:8px;border-radius:12px}.puzzle-tile{border-radius:8px}.puzzle-btn{padding:10px 24px;font-size:14px}}