:root{font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5;font-weight:400;color:#fff;background-color:#171717;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;overflow:hidden;background:#171717;min-width:320px;min-height:100vh}#game-canvas{display:block;width:100vw;height:100vh;cursor:none}#game-hud{position:fixed;top:0;left:0;right:0;pointer-events:none;z-index:100;padding:16px 24px}.hud-top{display:flex;justify-content:space-between;align-items:flex-start}.hud-left,.hud-right{display:flex;flex-direction:column;gap:8px}.hud-center{text-align:center}.hud-title{font-size:14px;font-weight:700;letter-spacing:4px;color:#9e7fff;text-shadow:0 0 20px rgba(158,127,255,.5)}.hud-score,.hud-wave,.hud-health,.hud-ammo{display:flex;align-items:center;gap:8px}.hud-label{font-size:10px;font-weight:600;letter-spacing:2px;color:#a3a3a3}.hud-value{font-size:24px;font-weight:700;color:#fff;text-shadow:0 0 10px rgba(255,255,255,.3)}.health-bar{width:120px;height:8px;background:#262626;border-radius:4px;overflow:hidden;border:1px solid #2F2F2F}.health-fill{height:100%;width:100%;background:linear-gradient(90deg,#10b981,#34d399);border-radius:4px;transition:width .2s ease,background .3s ease}.hud-actions{display:flex;gap:8px;margin-top:4px}.hud-btn{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;border-radius:6px;color:#fff;font-size:12px;font-weight:600;text-decoration:none;pointer-events:auto;transition:transform .2s ease,box-shadow .2s ease}.hud-btn-shop{background:linear-gradient(135deg,#9e7fff,#38bdf8)}.hud-btn-shop:hover{transform:scale(1.05);box-shadow:0 0 20px #9e7fff80}.hud-btn-account{background:#262626cc;border:1px solid #3F3F3F}.hud-btn-account:hover{background:#9e7fff26;border-color:#9e7fff;color:#9e7fff}.hud-bottom{position:fixed;bottom:16px;left:0;right:0;text-align:center}.hud-controls{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;background:#262626cc;border-radius:8px;border:1px solid #2F2F2F;font-size:12px;color:#a3a3a3}.key{display:inline-flex;align-items:center;justify-content:center;min-width:24px;height:24px;padding:0 6px;background:#262626;border:1px solid #3F3F3F;border-radius:4px;font-size:11px;font-weight:600;color:#fff}#start-screen{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;background:#171717f2;z-index:200;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.start-content{text-align:center;max-width:440px;padding:40px}.start-title{font-size:48px;font-weight:800;letter-spacing:6px;color:#9e7fff;text-shadow:0 0 40px rgba(158,127,255,.6);margin-bottom:12px}.start-subtitle{font-size:16px;color:#a3a3a3;margin-bottom:32px}.start-controls{display:flex;flex-direction:column;gap:12px;margin-bottom:28px}.control-row{display:flex;align-items:center;justify-content:center;gap:8px;font-size:14px;color:#a3a3a3}.start-auth-section{margin-bottom:28px;padding:20px;background:#26262699;border-radius:12px;border:1px solid #2F2F2F}.auth-status{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:16px;font-size:14px;color:#a3a3a3}.auth-icon{font-size:18px}.auth-status.authenticated{color:#10b981}.auth-status.authenticated .auth-icon{filter:drop-shadow(0 0 8px rgba(16,185,129,.5))}.auth-buttons{display:flex;gap:12px;justify-content:center}.auth-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:8px;font-size:13px;font-weight:700;letter-spacing:1px;text-decoration:none;transition:all .2s ease}.auth-btn-login{background:linear-gradient(135deg,#9e7fff,#38bdf8);color:#fff}.auth-btn-login:hover{transform:translateY(-2px);box-shadow:0 8px 24px #9e7fff66}.auth-btn-signup{background:#262626cc;border:1px solid #3F3F3F;color:#a3a3a3}.auth-btn-signup:hover{background:#9e7fff26;border-color:#9e7fff;color:#9e7fff}.auth-btn-account{background:#10b98126;border:1px solid rgba(16,185,129,.3);color:#10b981}.auth-btn-account:hover{background:#10b98140;box-shadow:0 0 20px #10b9814d}.start-actions{display:flex;flex-direction:column;gap:16px;align-items:center}.start-btn{padding:14px 40px;font-size:16px;font-weight:700;letter-spacing:2px;color:#fff;background:linear-gradient(135deg,#9e7fff,#38bdf8);border:none;border-radius:8px;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;pointer-events:auto}.start-btn:hover{transform:scale(1.05);box-shadow:0 0 30px #9e7fff80}.start-btn:active{transform:scale(.98)}.start-links{display:flex;align-items:center;gap:12px}.start-link{display:inline-flex;align-items:center;gap:6px;color:#a3a3a3;font-size:13px;font-weight:600;text-decoration:none;transition:color .2s ease}.start-link:hover{color:#9e7fff}.link-divider{color:#3f3f3f}#game-over-screen{position:fixed;top:0;right:0;bottom:0;left:0;display:none;align-items:center;justify-content:center;background:#171717f2;z-index:200;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.game-over-content{text-align:center;max-width:400px;padding:40px}.game-over-title{font-size:48px;font-weight:800;letter-spacing:6px;color:#ef4444;text-shadow:0 0 40px rgba(239,68,68,.6);margin-bottom:32px}.game-over-stats{display:flex;justify-content:center;gap:32px;margin-bottom:32px}.stat{display:flex;flex-direction:column;gap:4px}.stat-label{font-size:12px;font-weight:600;letter-spacing:2px;color:#a3a3a3}.stat-value{font-size:32px;font-weight:700;color:#fff}.game-over-actions{display:flex;flex-direction:column;gap:16px;align-items:center}@media (max-width: 768px){.hud-top{flex-direction:column;align-items:center;gap:12px}.hud-left,.hud-right{flex-direction:row;gap:16px}.hud-actions{flex-direction:row}.start-title,.game-over-title{font-size:36px}.game-over-stats{flex-direction:column;gap:16px}.hud-controls{font-size:10px;padding:6px 12px}.auth-buttons{flex-direction:column}.start-content{padding:24px}}