:root{--color-bg:#0a0a1a;--color-surface:#ffffff0d;--color-surface-hover:#ffffff1a;--color-border:#ffffff1a;--color-text-primary:#e0e0e0;--color-text-secondary:#888;--color-accent:#6c63ff;--color-accent-glow:#6c63ff4d;--color-health:#ff4757;--color-gold:gold;--color-success:#2ed573;--font-primary:"Inter", "Segoe UI", system-ui, -apple-system, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", monospace;--spacing-xs:4px;--spacing-sm:8px;--spacing-md:16px;--spacing-lg:24px;--spacing-xl:32px;--radius-sm:6px;--radius-md:12px;--radius-lg:16px;--glass-bg:#0f0f23bf;--glass-border:1px solid #ffffff14;--glass-blur:blur(12px)}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{background:var(--color-bg);width:100%;height:100%;color:var(--color-text-primary);font-family:var(--font-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow:hidden}.game-container{width:100%;height:100%;position:relative}.game-canvas{width:100%;height:100%;display:block}.hud-top{top:var(--spacing-md);gap:var(--spacing-md);z-index:10;pointer-events:none;display:flex;position:absolute;left:50%;transform:translate(-50%)}.hud-item{align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:var(--glass-bg);border:var(--glass-border);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border-radius:var(--radius-md);pointer-events:auto;min-width:120px;display:flex}.hud-icon{font-size:18px;line-height:1}.hud-value{font-family:var(--font-mono);color:var(--color-text-primary);white-space:nowrap;font-size:14px;font-weight:600}.hud-value-gold{color:var(--color-gold)}.hud-bar-container{background:#ffffff14;border-radius:4px;flex:1;min-width:60px;height:8px;overflow:hidden}.hud-bar-fill{border-radius:4px;height:100%;transition:width .3s}.hud-bar-health{background:linear-gradient(90deg, var(--color-health), #ff6b81)}.build-menu{bottom:var(--spacing-md);gap:var(--spacing-sm);z-index:10;padding:var(--spacing-sm);background:var(--glass-bg);border:var(--glass-border);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border-radius:var(--radius-lg);display:flex;position:absolute;left:50%;transform:translate(-50%)}.build-btn{padding:var(--spacing-sm) var(--spacing-md);background:var(--color-surface);border-radius:var(--radius-md);cursor:pointer;color:var(--color-text-primary);font-family:var(--font-primary);border:1px solid #0000;flex-direction:column;gap:4px;min-width:110px;transition:all .2s;display:flex}.build-btn:hover:not(:disabled){background:var(--color-surface-hover);border-color:var(--color-border);transform:translateY(-2px)}.build-btn-selected{box-shadow:0 0 12px var(--color-accent-glow);background:#6c63ff26;border-color:var(--color-accent)!important}.build-btn-disabled{opacity:.4;cursor:not-allowed}.build-btn-header{align-items:center;gap:6px;font-size:13px;font-weight:600;display:flex}.build-btn-dot{border-radius:50%;width:10px;height:10px;display:inline-block}.build-btn-name{white-space:nowrap}.build-btn-stats{gap:var(--spacing-sm);color:var(--color-text-secondary);font-size:11px;font-family:var(--font-mono);display:flex}.game-overlay{z-index:100;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#000000bf;flex-direction:column;justify-content:center;align-items:center;animation:.4s fadeIn;display:flex;position:absolute;inset:0}#main-menu{-webkit-backdrop-filter:none;backdrop-filter:none;background:url(/start_bg.png) 50%/cover no-repeat}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.overlay-title{margin-bottom:var(--spacing-md);letter-spacing:2px;text-transform:uppercase;font-size:48px;font-weight:800}.overlay-title-victory{background:linear-gradient(135deg,gold,#ff8c00);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.overlay-title-gameover{background:linear-gradient(135deg,#ff4757,#c44569);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.overlay-title-menu{background:linear-gradient(135deg,#6c63ff,#3498db);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:56px}.overlay-subtitle{color:var(--color-text-secondary);margin-bottom:var(--spacing-xl);font-size:16px}.overlay-stats{gap:var(--spacing-lg);margin-bottom:var(--spacing-xl);font-family:var(--font-mono);color:var(--color-text-secondary);font-size:14px;display:flex}.overlay-btn{padding:var(--spacing-md) var(--spacing-xl);background:linear-gradient(135deg, var(--color-accent), #5a52d5);color:#fff;border-radius:var(--radius-md);font-size:16px;font-weight:600;font-family:var(--font-primary);cursor:pointer;letter-spacing:1px;border:none;transition:all .2s}.overlay-btn:hover{box-shadow:0 4px 20px var(--color-accent-glow);transform:translateY(-2px)}.tower-info-panel{top:50%;right:var(--spacing-md);z-index:10;padding:var(--spacing-md);background:var(--glass-bg);border:var(--glass-border);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);border-radius:var(--radius-md);min-width:160px;position:absolute;transform:translateY(-50%)}.tower-info-title{margin-bottom:var(--spacing-sm);align-items:center;gap:var(--spacing-sm);font-size:16px;font-weight:700;display:flex}.tower-info-stats{color:var(--color-text-secondary);font-size:12px;font-family:var(--font-mono);margin-bottom:var(--spacing-md);flex-direction:column;gap:4px;display:flex}.sell-btn{width:100%;padding:var(--spacing-sm);border-radius:var(--radius-sm);color:var(--color-health);cursor:pointer;font-size:13px;font-weight:600;font-family:var(--font-primary);background:#ff475733;border:1px solid #ff47574d;transition:all .2s}.sell-btn:hover{background:#ff475759}.wave-notification{z-index:50;text-align:center;pointer-events:none;animation:.4s waveNotifyIn,.6s 1.4s forwards waveNotifyOut;position:absolute;top:35%;left:50%;transform:translate(-50%,-50%)}.wave-notification-text{letter-spacing:8px;text-transform:uppercase;background:linear-gradient(135deg,#ff4757,#ff6b81,gold);-webkit-text-fill-color:transparent;text-shadow:none;filter:drop-shadow(0 0 20px #ff475766);-webkit-background-clip:text;background-clip:text;font-size:64px;font-weight:900}.wave-notification-sub{color:#fff9;margin-top:var(--spacing-sm);letter-spacing:4px;font-size:16px}@keyframes waveNotifyIn{0%{opacity:0;transform:translate(-50%,-50%)scale(.5)}to{opacity:1;transform:translate(-50%,-50%)scale(1)}}@keyframes waveNotifyOut{0%{opacity:1}to{opacity:0;transform:translate(-50%,-60%)scale(1.1)}}.menu-grid-bg{background-image:linear-gradient(#6c63ff0f 1px,#0000 1px),linear-gradient(90deg,#6c63ff0f 1px,#0000 1px);background-size:40px 40px;animation:20s linear infinite gridScroll;position:absolute;inset:0;-webkit-mask-image:radial-gradient(#000 30%,#0000 70%);mask-image:radial-gradient(#000 30%,#0000 70%)}@keyframes gridScroll{0%{background-position:0 0}to{background-position:40px 40px}}.menu-content{z-index:1;-webkit-backdrop-filter:blur(12px);background:#0a0f1ea6;border:1px solid #00ffff26;border-radius:24px;flex-direction:column;align-items:center;padding:40px 60px;display:flex;position:relative;box-shadow:0 0 50px #0009,inset 0 0 20px #00ffff0d}.menu-badge{letter-spacing:4px;color:var(--color-accent);margin-bottom:var(--spacing-lg);background:#6c63ff14;border:1px solid #6c63ff4d;border-radius:20px;padding:4px 16px;font-size:11px;font-weight:700}.menu-tips{margin-top:var(--spacing-xl);color:var(--color-text-primary);opacity:.8;letter-spacing:1px;font-size:13px}.start-btn{color:var(--color-text-primary);border-radius:var(--radius-md);letter-spacing:4px;cursor:pointer;font-size:18px;font-weight:600;font-family:var(--font-primary);background:#0f1423cc;border:1px solid #6c63ff66;margin-top:15px;padding:16px 48px;transition:all .2s;box-shadow:inset 0 0 20px #6c63ff26,0 4px 15px #0006}.start-btn:hover{border-color:var(--color-accent);box-shadow:inset 0 0 30px #6c63ff4d, 0 0 20px var(--color-accent-glow);background:#6c63ff40;transform:translateY(-2px)}