:root{font-family:Space Grotesk,Segoe UI,sans-serif;color:#102a43;background:radial-gradient(circle at 20% 20%,#f0b429,#d9e2ec 42%,#bcccdc)}*{box-sizing:border-box}body{margin:0;min-height:100vh}main{width:min(1400px,100%);margin:0 auto;padding:1.5rem}.header{display:grid;gap:.8rem;margin-bottom:1.5rem}h1,h2,h3{margin:0}.game-nav{display:flex;flex-wrap:wrap;gap:.5rem}button,select,input{border:2px solid #102a43;border-radius:8px;padding:.45rem .75rem;font:inherit;background:#fefefe}button.active{background:#2bb673;color:#fff}.layout{display:grid;grid-template-columns:1fr;gap:1rem}article,.leaderboard{background:#ffffffc9;border-radius:12px;padding:1rem;border:1px solid #829ab1}.game-stage{width:100%;min-height:calc(100vh - 180px);display:grid;place-items:center;align-content:center;gap:.8rem}.game-stage h2{text-align:center}.game-wrap{display:grid;gap:.75rem;justify-items:center}.meta{margin:0;color:#334e68;font-size:.9rem}.error{margin:.5rem 0 0;color:#911111}.score-form{display:grid;gap:.5rem;margin-top:.8rem}.death-panel{border:2px solid #102a43;border-radius:10px;padding:1rem;background:#fff7e0;width:min(720px,92vw)}.death-panel .score-form{grid-template-columns:1fr auto auto;align-items:center}.death-overlay{position:fixed;top:0;right:0;bottom:0;left:0;width:100vw;min-height:100vh;background:#0f172aa6;display:grid;place-items:center;z-index:999;padding:1rem}.minesweeper-grid{display:grid;gap:2px}.cell{height:28px;width:28px;padding:0;border-radius:4px}.cell.revealed{background:#d9e2ec}canvas{max-width:100%;border-radius:10px;border:2px solid #243b53}.leaderboard-section{margin-top:3rem;padding-top:1rem}.leaderboard{max-width:720px;margin:0 auto}@media (max-width: 900px){.layout{grid-template-columns:1fr}}