:root{--intelligems-blue: #2563EB;--intelligems-green: #10B981;--intelligems-red: #EF4444;--intelligems-dark: #1F2937;--intelligems-light: #F9FAFB;--intelligems-gray: #6B7280;--intelligems-white: #FFFFFF}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--intelligems-dark);color:var(--intelligems-white);overflow:hidden}#game-container{width:100vw;height:100vh;position:relative}#game-canvas{width:100%;height:100%;display:block;background:var(--intelligems-dark)}.game-active,.game-active *{cursor:none!important}.hud{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:10}.hud-top{position:absolute;top:20px;left:20px;right:20px;display:flex;justify-content:space-between;gap:20px}.metric-panel{background:#1f2937e6;border:2px solid var(--intelligems-blue);border-radius:8px;padding:12px 16px;min-width:200px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.metric-label{font-size:12px;color:var(--intelligems-gray);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.metric-value{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:600}.progress-bar{width:80px;height:8px;background:#6b72804d;border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:var(--intelligems-green);border-radius:4px;transition:width .3s ease;width:82%}.metric-trend{font-size:14px;font-weight:500}.metric-trend.positive{color:var(--intelligems-green)}.metric-trend.negative{color:var(--intelligems-red)}.wave-progress-panel{background:#1f2937e6;border:2px solid var(--intelligems-blue);border-radius:8px;padding:12px 16px;margin:0 auto;max-width:300px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.wave-info{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.wave-label{font-size:14px;font-weight:600;color:var(--intelligems-blue)}.enemies-remaining{font-size:12px;color:var(--intelligems-gray)}.wave-progress-bar{width:100%;height:6px;background:#6b72804d;border-radius:3px;overflow:hidden}.wave-progress-fill{height:100%;background:linear-gradient(90deg,var(--intelligems-red) 0%,var(--intelligems-blue) 100%);border-radius:3px;transition:width .3s ease;width:0%}.hud-center{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.crosshair{position:relative;width:40px;height:40px}.crosshair-dot{display:none}.crosshair:before{content:"";position:absolute;top:0;left:50%;width:2px;height:15px;background:var(--intelligems-blue);transform:translate(-50%);box-shadow:0 0 2px var(--intelligems-blue)}.crosshair:after{content:"";position:absolute;bottom:0;left:50%;width:2px;height:15px;background:var(--intelligems-blue);transform:translate(-50%);box-shadow:0 0 2px var(--intelligems-blue)}.crosshair-left{position:absolute;top:50%;left:0;width:15px;height:2px;background:var(--intelligems-blue);transform:translateY(-50%);box-shadow:0 0 2px var(--intelligems-blue)}.crosshair-right{position:absolute;top:50%;right:0;width:15px;height:2px;background:var(--intelligems-blue);transform:translateY(-50%);box-shadow:0 0 2px var(--intelligems-blue)}.hud-bottom{position:absolute;bottom:20px;left:20px;right:20px;display:flex;justify-content:space-between;align-items:end}.weapon-panel{background:#1f2937e6;border:2px solid var(--intelligems-blue);border-radius:8px;padding:12px 16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.weapon-name{font-size:16px;font-weight:600;color:var(--intelligems-blue);margin-bottom:8px}.test-variants{display:flex;gap:8px}.variant{width:24px;height:24px;border:2px solid var(--intelligems-gray);border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600}.variant.active{border-color:var(--intelligems-green);background:#10b98133;color:var(--intelligems-green)}.ammo-panel{background:#1f2937e6;border:2px solid var(--intelligems-blue);border-radius:8px;padding:12px 16px;text-align:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.ammo-label{font-size:12px;color:var(--intelligems-gray);text-transform:uppercase;margin-bottom:4px}.ammo-count{font-size:24px;font-weight:700;color:var(--intelligems-green)}@keyframes pulse{0%{opacity:1;transform:scale(1)}50%{opacity:.7;transform:scale(1.1)}to{opacity:1;transform:scale(1)}}.health-panel{background:#1f2937e6;border:2px solid var(--intelligems-red);border-radius:8px;padding:12px 16px;text-align:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);min-width:120px}.health-label{font-size:12px;color:var(--intelligems-gray);text-transform:uppercase;margin-bottom:4px}.health-bar{width:100px;height:8px;background:#6b72804d;border-radius:4px;overflow:hidden;margin:4px auto 8px}.health-fill{height:100%;background:var(--intelligems-green);border-radius:4px;transition:width .3s ease,background-color .3s ease;width:100%}.health-text{font-size:18px;font-weight:600;color:var(--intelligems-green)}.menu-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#1f2937f2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);display:flex;align-items:center;justify-content:center;z-index:100;pointer-events:all}.menu-overlay.hidden{display:none}.menu-content{text-align:center;max-width:600px;padding:40px}.game-title{font-size:48px;font-weight:700;color:var(--intelligems-blue);margin-bottom:16px;text-shadow:0 0 20px rgba(37,99,235,.5)}.game-subtitle{font-size:18px;color:var(--intelligems-gray);margin-bottom:40px}.menu-buttons{display:flex;flex-direction:column;gap:16px;align-items:center}.btn-primary,.btn-secondary{padding:12px 32px;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s ease;min-width:200px}.btn-primary{background:var(--intelligems-blue);color:var(--intelligems-white)}.btn-primary:hover{background:#1d4ed8;transform:translateY(-2px);box-shadow:0 4px 20px #2563eb66}.btn-secondary{background:transparent;color:var(--intelligems-blue);border:2px solid var(--intelligems-blue)}.btn-secondary:hover{background:var(--intelligems-blue);color:var(--intelligems-white)}.instructions{text-align:left;margin:24px 0;padding:20px;background:#37415180;border-radius:8px;border-left:4px solid var(--intelligems-blue)}.instructions h2{color:var(--intelligems-blue);margin-bottom:16px}.instructions p{margin-bottom:12px;line-height:1.6}.instructions ul{margin:8px 0 16px 20px}.instructions li{margin-bottom:8px;line-height:1.5}.final-stats{margin:32px 0;padding:24px;background:#37415180;border-radius:8px;border:2px solid var(--intelligems-green)}.stat{display:flex;justify-content:space-between;margin-bottom:12px;font-size:16px}.stat-label{color:var(--intelligems-gray)}.stat-value{color:var(--intelligems-green);font-weight:600}@media (max-width: 768px){.hud-top{flex-direction:column;gap:10px}.metric-panel{min-width:auto}.game-title{font-size:32px}.menu-content{padding:20px}}