:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:#0a0a0a;color:#fafafa}.app{min-height:100vh;display:flex;justify-content:center;align-items:center;padding:1rem}.game{display:flex;flex-direction:column;align-items:center;gap:1.25rem;max-width:400px;width:100%}.game-header{display:flex;justify-content:space-between;align-items:center;width:100%;padding:0 .5rem}.level-nav{display:flex;align-items:center;gap:.75rem}.nav-btn{background:#ffffff1a;border:none;color:#fafafa;width:36px;height:36px;border-radius:50%;font-size:1.1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}.nav-btn:hover:not(:disabled){background:#fff3}.nav-btn:disabled{opacity:.3;cursor:default}.level-label{font-size:1.1rem;font-weight:600;color:#f0c040}.progress{font-size:.9rem;color:#fff9}.word-grid{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;padding:1rem 0}.word-row{display:flex;gap:4px}.word-cell{width:32px;height:32px;border:2px solid rgba(255,255,255,.2);border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:1rem;font-weight:700;text-transform:uppercase;color:#fafafa;background:#ffffff0d;transition:all .3s}.word-row.found .word-cell{border-color:#4ade80;background:#4ade8026;color:#4ade80}.current-word{font-size:1.75rem;font-weight:700;letter-spacing:.15em;text-transform:uppercase;min-height:2.5rem;color:#f0c040}.message{font-size:.9rem;color:#ffffffb3;min-height:1.2rem}.letter-circle{width:240px;height:240px}.letter-node{fill:#ffffff1a;stroke:#ffffff4d;stroke-width:2;transition:all .2s}.letter-node:hover{fill:#fff3}.letter-node.selected{fill:#f0c040;stroke:#f0c040}.letter-text{fill:#fafafa;font-size:18px;font-weight:700;text-anchor:middle;dominant-baseline:central;pointer-events:none;-webkit-user-select:none;user-select:none}.connection-line{stroke:#f0c040;stroke-width:3;stroke-linecap:round;opacity:.6}.controls{display:flex;gap:.75rem}.ctrl-btn{padding:.6rem 1.5rem;border:2px solid rgba(255,255,255,.2);border-radius:2rem;background:transparent;color:#fafafa;font-size:.95rem;font-weight:600;cursor:pointer;transition:all .2s}.ctrl-btn:hover{background:#ffffff1a}.submit-btn{background:#f0c040;color:#0a0a0a;border-color:#f0c040}.submit-btn:hover{background:#e0b030}.submit-btn:disabled{opacity:.4;cursor:default}.complete-banner{display:flex;flex-direction:column;align-items:center;gap:.75rem;padding:1rem 1.5rem;background:#4ade801a;border:1px solid rgba(74,222,128,.3);border-radius:.75rem;color:#4ade80;font-weight:600}.next-btn{padding:.5rem 1.25rem;border:none;border-radius:2rem;background:#4ade80;color:#0a0a0a;font-size:.9rem;font-weight:700;cursor:pointer;transition:background .2s}.next-btn:hover{background:#3bcc6f}