@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap";:root{--bg-color:#0f172a;--text-primary:#f8fafc;--text-secondary:#94a3b8;--accent:#3b82f6;--accent-glow:#3b82f680;--cell-bg:#ffffff08;--cell-border:#ffffff1a;--checked-color:#10b981;--checked-glow:#10b98199}body{background-color:var(--bg-color);color:var(--text-primary);margin:0;padding:0;font-family:Inter,sans-serif;overflow:hidden}.app-container{flex-direction:column;align-items:center;width:100vw;height:100vh;display:flex}.app-header{text-align:center;z-index:10;background:linear-gradient(#0f172a 0%,#0f172acc 80%,#0f172a00 100%);width:100%;padding:24px 0}.app-header h1{background:linear-gradient(90deg,#3b82f6,#8b5cf6,#ec4899);-webkit-text-fill-color:transparent;letter-spacing:-1px;-webkit-background-clip:text;margin:0;font-size:2.5rem;font-weight:800}.subtitle{color:var(--text-secondary);margin:8px 0 0;font-size:1rem;font-weight:400}.grid-container{flex:1;justify-content:center;width:100%;padding:0 20px;display:flex}.virtualized-grid{left:10vw}.grid-container div{margin:auto}.virtualized-grid{border:1px solid var(--cell-border);background-color:#0003;border-radius:12px;box-shadow:0 25px 50px -12px #00000080}.checkbox-cell{justify-content:center;align-items:center;display:flex}.custom-checkbox{appearance:none;border:2px solid var(--text-secondary);background-color:var(--cell-bg);cursor:pointer;border-radius:4px;outline:none;width:20px;height:20px;transition:all .2s cubic-bezier(.4,0,.2,1);position:relative}.custom-checkbox:hover{border-color:var(--accent);box-shadow:0 0 10px var(--accent-glow);transform:scale(1.1)}.custom-checkbox:checked{background-color:var(--checked-color);border-color:var(--checked-color);box-shadow:0 0 12px var(--checked-glow);animation:.3s ease-out forwards pop}.custom-checkbox:checked:after{content:"";border:2px solid #fff;border-width:0 2px 2px 0;width:4px;height:10px;position:absolute;top:1px;left:5px;transform:rotate(45deg)}@keyframes pop{0%{transform:scale(.8)}50%{transform:scale(1.2)}to{transform:scale(1)}}.virtualized-grid::-webkit-scrollbar{width:10px;height:10px}.virtualized-grid::-webkit-scrollbar-track{background:#0000001a;border-radius:8px}.virtualized-grid::-webkit-scrollbar-thumb{background:var(--text-secondary);border-radius:8px}.virtualized-grid::-webkit-scrollbar-thumb:hover{background:var(--accent)}.error-toast{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:1000;background:#0f172af2;border:1px solid #ef444480;border-left:4px solid #ef4444;border-radius:12px;align-items:center;gap:16px;padding:16px 28px;animation:.4s cubic-bezier(.175,.885,.32,1.275) forwards toastSlideUp;display:flex;position:fixed;bottom:40px;left:50%;transform:translate(-50%);box-shadow:0 20px 25px -5px #00000080,0 0 15px #ef444433}.error-icon{font-size:1.5rem}.error-content{color:#f8fafc;font-size:1rem;font-weight:600}@keyframes toastSlideUp{0%{opacity:0;transform:translate(-50%,30px)scale(.95)}to{opacity:1;transform:translate(-50%)scale(1)}}