:root{--bg:#06060f;--bg2:#0c0c1e;--panel:#0a0a1cf7;--neon:#00ffc8;--neon2:#ff0064;--neon3:#0ff;--accent:#fa0;--text:#e8edf7;--muted:#8892a8;--font:"Segoe UI", system-ui, -apple-system, sans-serif}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:var(--font);min-height:100vh;margin:0;overflow-x:hidden}.game-root{flex-direction:column;min-height:100vh;display:flex}.game-header{background:var(--panel);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);z-index:100;border-bottom:1px solid #00ffc826;justify-content:space-between;align-items:center;padding:12px 20px;display:flex;position:sticky;top:0}.logo{align-items:center;gap:8px;display:flex}.logo-icon{font-size:24px}.logo-text{letter-spacing:2px;color:var(--neon);text-shadow:0 0 10px #00ffc880;font-size:18px;font-weight:800}.header-right{align-items:center;gap:12px;display:flex}.user-badge{color:var(--neon);background:#00ffc81a;border:1px solid #00ffc84d;border-radius:20px;padding:6px 14px;font-size:13px}.sso-btn{background:linear-gradient(135deg, var(--neon), var(--neon3));color:#000;border-radius:8px;padding:8px 16px;font-size:13px;font-weight:700;text-decoration:none;transition:transform .15s,box-shadow .15s;display:inline-block}.sso-btn:hover{transform:translateY(-1px);box-shadow:0 4px 15px #00ffc866}.game-viewport{cursor:crosshair;-webkit-user-select:none;user-select:none;background:radial-gradient(#0d0d1a 0%,#050510 100%);flex:1;min-height:500px;position:relative;overflow:hidden}.game-viewport.shake{animation:.3s ease-in-out shake}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-4px,2px)}50%{transform:translate(3px,-3px)}75%{transform:translate(-2px,3px)}}.game-viewport.damage-flash{animation:.3s ease-out damageFlash}@keyframes damageFlash{0%{box-shadow:inset 0 0 60px #f009}to{box-shadow:inset 0 0 #f000}}.game-canvas{width:100%;height:100%;position:absolute;inset:0}.crosshair{pointer-events:none;z-index:10;position:absolute;transform:translate(-50%,-50%)}.crosshair-ring{border:2px solid var(--neon);border-radius:50%;width:24px;height:24px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);box-shadow:0 0 8px #00ffc880}.crosshair-dot{background:var(--neon);border-radius:50%;width:4px;height:4px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.muzzle-flash{pointer-events:none;z-index:5;background:radial-gradient(circle,#ffff64e6 0%,#0000 70%);border-radius:50%;width:60px;height:60px;animation:.1s ease-out muzzleFlash;position:absolute;bottom:20%;left:50%;transform:translate(-50%)}@keyframes muzzleFlash{0%{opacity:1;transform:translate(-50%)scale(1)}to{opacity:0;transform:translate(-50%)scale(1.5)}}.hit-marker{color:var(--neon2);pointer-events:none;z-index:15;font-size:28px;font-weight:900;animation:.15s ease-out hitPop;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}@keyframes hitPop{0%{opacity:1;transform:translate(-50%,-50%)scale(.5)}to{opacity:0;transform:translate(-50%,-50%)scale(1.2)}}.hud{pointer-events:none;z-index:20;position:absolute;inset:0}.hud-top{justify-content:center;gap:24px;padding:16px;display:flex}.weapon-panel{pointer-events:auto;z-index:22;background:#06060fc7;border:1px solid #00ffc859;border-radius:10px;flex-direction:column;gap:6px;width:168px;padding:10px;display:flex;position:absolute;top:16px;right:16px}.weapon-panel-title{letter-spacing:1.5px;color:var(--neon);font-size:11px;font-weight:800}.weapon-panel-points{color:var(--neon3);margin-bottom:2px;font-size:11px}.weapon-btn{color:var(--text);cursor:pointer;font:inherit;text-align:left;background:#00ffc814;border:1px solid #00ffc84d;border-radius:8px;flex-direction:column;align-items:flex-start;gap:2px;padding:7px 8px;display:flex}.weapon-btn:hover:not(:disabled){border-color:var(--neon);background:#00ffc829}.weapon-btn:disabled{opacity:.45;cursor:not-allowed}.weapon-btn-meta{color:var(--accent);font-size:10px}.hud-item{background:#00000080;border:1px solid #00ffc833;border-radius:8px;flex-direction:column;align-items:center;padding:8px 16px;display:flex}.hud-label{color:var(--muted);letter-spacing:1px;font-size:10px}.hud-value{color:var(--neon);font-size:20px;font-weight:800}.hud-value.score{color:var(--neon3)}.hud-bottom{justify-content:space-between;align-items:flex-end;display:flex;position:absolute;bottom:16px;left:16px;right:16px}.hp-bar-container{background:#0009;border:1px solid #ffffff1a;border-radius:8px;align-items:center;gap:8px;padding:8px 12px;display:flex}.hp-bar-label{color:var(--muted);font-size:12px;font-weight:700}.hp-bar{background:#ffffff1a;border-radius:4px;width:120px;height:8px;overflow:hidden}.hp-bar-fill{border-radius:4px;height:100%;transition:width .3s,background .3s}.hp-bar-value{text-align:right;min-width:40px;font-size:12px;font-weight:700}.active-upgrades{flex-wrap:wrap;justify-content:flex-end;gap:6px;display:flex}.upgrade-badge{color:var(--neon);background:#00ffc826;border:1px solid #00ffc866;border-radius:12px;padding:4px 10px;font-size:11px}.upgrade-badge.shield{color:#48f;background:#0064ff26;border-color:#0064ff66}.kill-notification{color:var(--neon);text-shadow:0 0 20px #00ffc8cc;pointer-events:none;z-index:25;font-size:32px;font-weight:900;animation:.8s ease-out killPop;position:absolute;top:40%;left:50%;transform:translate(-50%,-50%)}@keyframes killPop{0%{opacity:1;transform:translate(-50%,-50%)scale(.5)}to{opacity:0;transform:translate(-50%,-80%)scale(1.3)}}.round-transition{z-index:30;background:#000000b3;flex-direction:column;justify-content:center;align-items:center;animation:.5s fadeIn;display:flex;position:absolute;inset:0}.round-transition-text{color:var(--neon);text-shadow:0 0 30px #00ffc899;letter-spacing:4px;font-size:48px;font-weight:900}.round-transition-sub{color:var(--muted);margin-top:8px;font-size:18px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.overlay{z-index:50;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#050510eb;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.overlay-content{text-align:center;max-width:500px;padding:20px}.game-title{color:var(--neon);text-shadow:0 0 40px #00ffc880;letter-spacing:6px;margin-bottom:8px;font-size:56px;font-weight:900}.game-subtitle{color:var(--muted);margin-bottom:24px;font-size:18px}.game-rules{flex-direction:column;gap:8px;margin-bottom:24px;display:flex}.game-rules p{color:var(--text);opacity:.85;font-size:14px}.start-btn{background:linear-gradient(135deg, var(--neon), var(--neon3));color:#000;cursor:pointer;letter-spacing:1px;border:none;border-radius:10px;margin-bottom:16px;padding:14px 32px;font-size:16px;font-weight:800;transition:transform .15s,box-shadow .15s;display:inline-block}.start-btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #00ffc866}.controls-hint{flex-wrap:wrap;justify-content:center;gap:16px;display:flex}.controls-hint span{color:var(--muted);background:#ffffff0d;border-radius:6px;padding:4px 10px;font-size:12px}.upgrade-overlay{background:#050510f2}.upgrade-title{color:var(--neon);margin-bottom:8px;font-size:32px;font-weight:900}.upgrade-subtitle{color:var(--muted);margin-bottom:24px;font-size:16px}.upgrade-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;max-width:480px;margin:0 auto;display:grid}.upgrade-card{cursor:pointer;color:var(--text);background:#ffffff0d;border:2px solid #00ffc833;border-radius:12px;flex-direction:column;align-items:center;gap:8px;padding:16px 12px;transition:all .2s;display:flex}.upgrade-card:hover{border-color:var(--neon);background:#00ffc81a;transform:translateY(-3px);box-shadow:0 4px 15px #00ffc833}.upgrade-card.selected{border-color:var(--neon);background:#00ffc826}.upgrade-icon{font-size:32px}.upgrade-name{font-size:14px;font-weight:700}.upgrade-desc{color:var(--muted);text-align:center;font-size:11px}.win-overlay .win-title{color:var(--neon);text-shadow:0 0 30px #00ffc899;margin-bottom:8px;font-size:48px;font-weight:900}.win-subtitle{color:var(--muted);margin-bottom:16px;font-size:18px}.lose-overlay .lose-title{color:var(--neon2);text-shadow:0 0 30px #ff006499;margin-bottom:8px;font-size:48px;font-weight:900}.lose-subtitle{color:var(--muted);margin-bottom:16px;font-size:18px}.final-score{color:var(--neon3);margin-bottom:20px;font-size:24px;font-weight:800}.scoreboard{margin-top:24px}.scoreboard-title{color:var(--muted);margin-bottom:8px;font-size:14px;font-weight:700}.scoreboard-row{background:#ffffff0d;border-radius:6px;align-items:center;gap:8px;margin-bottom:4px;padding:6px 12px;font-size:13px;display:flex}.scoreboard-row.me{background:#00ffc81a;border:1px solid #00ffc84d}.scoreboard-rank{color:var(--neon);width:20px;font-weight:800}.scoreboard-name{text-align:left;flex:1}.scoreboard-score{color:var(--neon3);font-weight:700}.game-footer{text-align:center;color:var(--muted);background:var(--panel);border-top:1px solid #00ffc81a;padding:12px;font-size:12px}@media (width<=600px){.game-title{font-size:36px}.round-transition-text{font-size:32px}.hud-top{gap:12px}.hud-item{padding:6px 10px}.hud-value{font-size:16px}.upgrade-grid{grid-template-columns:repeat(2,1fr)}.hp-bar{width:80px}.weapon-panel{width:132px;padding:8px;top:8px;right:8px}.weapon-btn{padding:5px 6px;font-size:11px}}