:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}#root{margin:0;padding:0;width:100%;min-height:100vh}.splitflap-container{display:flex;flex-direction:column;min-height:100vh;background:#1a1a1a;padding:40px;gap:40px;align-items:center;justify-content:center}.splitflap-board{display:grid;grid-template-rows:repeat(6,auto);gap:4px}.splitflap-row{display:grid;grid-template-columns:repeat(22,1fr);gap:6px;justify-content:center}.splitflap-cell{position:relative;aspect-ratio:3/4;background:#000;border-radius:4px;overflow:hidden;box-shadow:inset 0 0 0 1px #ffffff1a,0 2px 4px #00000080}.splitflap-cell-inner{position:relative;width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-family:Courier New,monospace;font-size:clamp(1rem,3vw,2.5rem);font-weight:700;color:#f4e5a0;text-shadow:0 0 8px rgba(244,229,160,.3);transform-style:preserve-3d;perspective:1000px}.splitflap-cell:before{content:"";position:absolute;top:50%;left:0;right:0;height:1px;background:#000c;z-index:10;box-shadow:0 -1px #ffffff0d,0 1px #ffffff0d}.splitflap-cell:after{content:"";position:absolute;inset:0 0 50%;background:linear-gradient(to bottom,#ffffff0d,#0000001a);pointer-events:none}.splitflap-cell.animating .splitflap-cell-inner{animation:flip 1.2s cubic-bezier(.45,.05,.55,.95)}@keyframes flip{0%{transform:rotateX(0);opacity:1}45%{transform:rotateX(90deg);opacity:.3}55%{transform:rotateX(-90deg);opacity:.3}to{transform:rotateX(0);opacity:1}}.splitflap-cell.empty{background:#0a0a0a;box-shadow:inset 0 0 0 1px #ffffff0d,0 1px 2px #0000004d}.splitflap-cell.empty .splitflap-cell-inner{color:transparent}.splitflap-controls{display:flex;gap:12px;align-items:center;justify-content:center;width:100%;max-width:600px}.splitflap-input{flex:1;padding:12px 16px;font-size:16px;font-family:Courier New,monospace;background:#2a2a2a;border:2px solid #444;border-radius:4px;color:#f4e5a0;outline:none;transition:border-color .3s}.splitflap-input:focus{border-color:#f4e5a0}.splitflap-input::placeholder{color:#666}.splitflap-button{padding:12px 32px;font-size:16px;font-family:Courier New,monospace;font-weight:700;background:#f4e5a0;color:#1a1a1a;border:none;border-radius:4px;cursor:pointer;transition:all .3s;text-transform:uppercase}.splitflap-button:hover{background:#fff;transform:translateY(-1px);box-shadow:0 4px 8px #f4e5a04d}.splitflap-button:active{transform:translateY(0);box-shadow:0 2px 4px #f4e5a033}