:root{--bg: #1a0e06;--earth: #6b3f1d;--earth2: #5a3417;--tunnel: #120a04;--rock: #8a8f99;--player: #f6e05e;--burrower: #e53e3e;--drake: #38a169;--fire: #f6ad55;--ink: #f5ecd9}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);font-family:Trebuchet MS,Segoe UI,system-ui,sans-serif}#app{min-height:100%;display:flex;flex-direction:column;align-items:center;gap:10px;padding:14px}#hud{display:flex;gap:16px;align-items:center;flex-wrap:wrap;font-size:15px;letter-spacing:.05em}.hud-item b{color:var(--player);font-size:18px}.hud-item.air{display:inline-flex;align-items:center;gap:6px}#air-bar{display:inline-block;width:90px;height:12px;border:1px solid #5a3417;border-radius:6px;background:#2a1808;overflow:hidden;vertical-align:middle}#air-fill{display:block;height:100%;width:100%;background:linear-gradient(90deg,#63b3ed,#90cdf4);transition:width .08s linear}#air-bar.low #air-fill{background:linear-gradient(90deg,#e53e3e,#f6ad55)}#difficulty{background:#2a1808;color:var(--ink);border:1px solid #5a3417;border-radius:6px;padding:3px 6px}#game{border:3px solid #3a2410;border-radius:6px;background:var(--tunnel);image-rendering:pixelated;max-width:95vw;height:auto;touch-action:none}#hint{font-size:12px;opacity:.75;max-width:620px;text-align:center;margin:2px 0 0}#overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:#080401c7;z-index:5}#overlay.hidden{display:none}#overlay-text{text-align:center;font-size:26px;line-height:1.5;text-shadow:0 2px 6px #000}#overlay-text small{display:block;font-size:15px;opacity:.85;margin-top:8px}