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.control-btn{display:flex;align-items:center;justify-content:center;padding:var(--spacing-xs) var(--spacing-sm);background:transparent;border:var(--border-width-thin) solid var(--border-color);border-radius:var(--border-radius-sm);color:#fff9;font-size:var(--font-size-small);cursor:pointer;transition:all var(--transition-medium) ease;min-width:2.75rem;min-height:2.75rem;line-height:1}@media (max-width: 768px){.board-container .game-controls .control-btn{min-width:1.875rem;font-size:.625rem;padding:var(--spacing-xs) .25rem}}.board-container .game-controls .control-btn:hover{background:var(--theme-purple-a20);border-color:var(--theme-purple-a80);color:var(--theme-purple-lighter)}.board-container .game-controls .control-btn:active{transform:scale(.95)}.board-container .game-controls .control-btn.active{background:var(--theme-purple-a30);border-color:var(--theme-purple);color:var(--theme-purple-lighter);box-shadow:0 0 var(--spacing-xs) var(--theme-purple-a50)}.board-container .game-controls .pause-btn{min-width:2.5rem;line-height:0}.board-container .game-controls .pause-btn.active{background:rgba(255,200,0,.15);border-color:#ffc80080;color:var(--game-gold);box-shadow:0 0 var(--spacing-xs) #ffc8004d}.board-container .game-controls .path-btn.active{background:rgba(0,255,136,.15);border-color:#00ff8880;color:#8fb;box-shadow:0 0 var(--spacing-xs) #00ff884d}.board-container .game-controls .wave-hint{font-size:.5625rem;color:#ffffff4d}@media (max-width: 480px){.board-container .game-controls{bottom:auto;top:5rem;right:var(--spacing-xs);flex-direction:row;flex-wrap:wrap;align-items:center;gap:.15rem;padding:.15rem}.board-container .game-controls .control-btn{min-width:2.75rem;min-height:2.75rem;padding:var(--spacing-xs);font-size:.5625rem;justify-content:center}.board-container .game-controls .pause-btn{line-height:0}.board-container .game-controls .speed-controls{flex-direction:row;gap:.15rem}}.board-container .tower-selection{background:rgba(0,0,0,.8);border-radius:var(--border-radius-md);backdrop-filter:blur(.625rem);z-index:var(--z-index-overlay);font-family:Orbitron,sans-serif;position:absolute;bottom:var(--spacing-lg);left:50%;transform:translate(-50%);display:flex;gap:var(--spacing-md);padding:var(--spacing-sm);border:var(--border-width-thin) solid var(--border-color)}@media (max-width: 768px){.board-container .tower-selection{bottom:var(--spacing-md);gap:var(--spacing-sm);padding:var(--spacing-xs);width:90%;justify-content:center}}@media (max-width: 480px){.board-container .tower-selection{display:grid;grid-template-columns:repeat(3,1fr);bottom:0;left:0;right:0;transform:none;width:100%;border-radius:var(--border-radius-md) var(--border-radius-md) 0 0;padding:var(--spacing-sm);gap:var(--spacing-xs);border-left:none;border-right:none;border-bottom:none}}.board-container .tower-selection .tower-btn{position:relative;display:flex;flex-direction:column;align-items:center;gap:var(--spacing-xs);padding:var(--spacing-sm);background:transparent;border:var(--border-width-medium) solid var(--border-color);border-radius:var(--border-radius-sm);cursor:pointer;transition:all var(--transition-medium) cubic-bezier(.4,0,.2,1);min-width:5rem}@media (max-width: 768px){.board-container .tower-selection .tower-btn{min-width:4rem;padding:var(--spacing-xs)}}@media (max-width: 480px){.board-container .tower-selection .tower-btn{min-width:unset;width:100%;min-height:2.75rem;padding:.25rem;gap:.0625rem}.board-container .tower-selection .tower-hotkey{display:none}}.board-container .tower-selection .tower-btn:hover{background:rgba(255,255,255,.1);border-color:var(--border-color-strong);transform:translateY(-.125rem)}.board-container .tower-selection .tower-btn:active{transform:translateY(.0625rem)}.board-container .tower-selection .tower-btn.selected{background:rgba(255,255,255,.15);border-color:var(--text-color);box-shadow:0 0 var(--spacing-sm) #ffffff4d}.board-container .tower-selection .tower-btn.unaffordable{opacity:.4}.board-container .tower-selection .tower-btn.unaffordable .tower-cost{color:var(--game-health)}.board-container .tower-selection .tower-icon{width:2.5rem;height:2.5rem;border-radius:var(--border-radius-sm);display:flex;align-items:center;justify-content:center;position:relative}@media (max-width: 768px){.board-container .tower-selection .tower-icon{width:2rem;height:2rem}}@media (max-width: 480px){.board-container .tower-selection .tower-icon{width:1.25rem;height:1.25rem}}.board-container .tower-selection .tower-icon.basic:before{content:"";width:1.25rem;height:1.25rem;background:var(--tower-color-basic);border-radius:50%;box-shadow:0 0 var(--spacing-xs) var(--tower-glow-basic)}.board-container .tower-selection .tower-icon.sniper:before{content:"";width:0;height:0;border-left:.75rem solid transparent;border-right:.75rem solid transparent;border-bottom:1.5rem solid var(--tower-color-sniper);filter:drop-shadow(0 0 4px var(--tower-glow-sniper))}.board-container .tower-selection .tower-icon.splash:before{content:"";width:1.25rem;height:1.25rem;background:var(--tower-color-splash);box-shadow:0 0 var(--spacing-xs) var(--tower-glow-splash)}.board-container .tower-selection .tower-icon.slow:before{content:"";width:.9rem;height:.9rem;background:var(--tower-color-slow);transform:rotate(45deg);box-shadow:0 0 var(--spacing-xs) var(--tower-glow-slow)}.board-container .tower-selection .tower-icon.chain:before{content:"";width:.25rem;height:1.5rem;background:var(--tower-color-chain);border-radius:.125rem;box-shadow:0 0 var(--spacing-xs) var(--tower-glow-chain)}.board-container .tower-selection .tower-icon.mortar:before{content:"";width:1.4rem;height:.75rem;background:var(--tower-color-mortar);border-radius:.1rem;box-shadow:0 0 var(--spacing-xs) var(--tower-glow-mortar)}.board-container .tower-selection .tower-name{font-size:var(--font-size-small);color:var(--text-color);font-weight:500;text-transform:uppercase;letter-spacing:.0313rem}@media (max-width: 768px){.board-container .tower-selection .tower-name{font-size:.75rem}}@media (max-width: 480px){.board-container .tower-selection .tower-name{font-size:.5rem}}.board-container .tower-selection .tower-cost{font-size:.6875rem;color:var(--game-gold)}@media (max-width: 480px){.board-container .tower-selection .tower-cost{font-size:.5rem}}.board-container .tower-selection .tower-hotkey{font-size:.5rem;color:#ffffff40;letter-spacing:.0313rem}.board-container .tower-selection .tower-tooltip{position:absolute;bottom:calc(100% + .625rem);left:50%;transform:translate(-50%);min-width:9rem;padding:var(--spacing-sm) var(--spacing-md);background:var(--nav-bg, rgba(10, 5, 20, .96));border:var(--border-width-thin) solid var(--theme-purple-a50);border-radius:var(--border-radius-md);backdrop-filter:blur(.75rem);pointer-events:none;opacity:0;visibility:hidden;transition:opacity .15s ease,visibility .15s ease;z-index:calc(var(--z-index-overlay) + 10);white-space:nowrap;word-wrap:break-word;box-shadow:0 .25rem 1rem #0009,0 0 .5rem var(--theme-purple-a30, rgba(128, 0, 255, .2))}@media (max-width: 480px){.board-container .tower-selection .tower-tooltip{max-width:min(200px,50vw);white-space:normal}}.board-container .tower-selection .tower-btn:hover .tower-tooltip{opacity:1;visibility:visible}@media (hover: none){.board-container .tower-selection .tower-btn:hover .tower-tooltip{opacity:0;visibility:hidden}}.board-container .tower-selection .tower-btn.previewing .tower-tooltip{opacity:1;visibility:visible}.board-container .tower-selection .tooltip-stat{display:flex;justify-content:space-between;gap:var(--spacing-md);font-size:clamp(.5rem,1.5vw,.625rem);margin-bottom:.1875rem}.board-container .tower-selection .tooltip-label{color:#ffffff73;letter-spacing:.0625rem}.board-container .tower-selection .tooltip-val{color:var(--text-color);font-weight:600}.board-container .tower-selection .tooltip-desc{margin-top:var(--spacing-xs);padding-top:var(--spacing-xs);border-top:var(--border-width-thin) solid rgba(255,255,255,.1);font-size:.5rem;color:var(--theme-purple-mid, rgba(160, 100, 255, .8));text-align:center;line-height:1.4;white-space:normal}.board-container .tower-selection .tooltip-arrow{position:absolute;bottom:-.3125rem;left:50%;transform:translate(-50%) rotate(45deg);width:.375rem;height:.375rem;background:var(--nav-bg, rgba(10, 5, 20, .96));border-right:var(--border-width-thin) solid var(--theme-purple-a50);border-bottom:var(--border-width-thin) solid var(--theme-purple-a50)}.board-container .help-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;z-index:var(--z-index-modal)}.board-container .help-overlay .help-content{background:var(--nav-bg-a90);border:var(--border-width-thin) solid var(--theme-purple);border-radius:var(--border-radius-lg);padding:var(--spacing-lg) var(--spacing-xl);max-width:20rem}.board-container .help-overlay .help-content h3{margin:0 0 var(--spacing-sm);color:var(--theme-purple-light);font-size:var(--font-size-base)}.board-container .help-overlay .help-grid{display:grid;grid-template-columns:4.375rem 1fr;gap:var(--spacing-xs) var(--spacing-sm);font-size:var(--font-size-small)}.board-container .help-overlay .help-grid kbd{background:rgba(255,255,255,.1);padding:2px var(--spacing-xs);border-radius:var(--border-radius-sm);text-align:center;font-family:monospace;color:var(--text-color);border:none}.board-container .help-overlay .help-grid span{color:#ffffffb3}.board-container .help-overlay .help-dismiss{margin:var(--spacing-sm) 0 0;font-size:.6875rem;color:#fff6;text-align:center}.board-container .mode-indicator{position:absolute;bottom:calc(var(--spacing-lg) + var(--tower-bar-height) + .5rem);left:50%;transform:translate(-50%);display:flex;align-items:center;gap:var(--spacing-xs);padding:.25rem var(--spacing-sm);border-radius:var(--border-radius-md);background:rgba(0,0,0,.75);pointer-events:none;z-index:var(--z-index-overlay);font-family:Orbitron,sans-serif;font-size:var(--font-size-xs);text-transform:uppercase;letter-spacing:.05em;white-space:nowrap;animation:mode-indicator-in .2s ease-out}.board-container .mode-indicator .mode-label{font-weight:600}.board-container .mode-indicator .mode-label.place-mode{color:var(--theme-cyan, #00ffff)}.board-container .mode-indicator .mode-cost{color:var(--game-gold, #ffd700);font-weight:700}.board-container .mode-indicator .mode-percent{color:var(--theme-orange);font-weight:600;font-size:var(--font-size-2xs)}.board-container .mode-indicator .mode-hint{font-size:var(--font-size-2xs);color:#ffffff59;text-transform:none;letter-spacing:normal}@media (max-width: 768px){.board-container .mode-indicator{bottom:calc(var(--spacing-md) + var(--tower-bar-height) + .5rem);font-size:var(--font-size-2xs)}}@media (max-width: 480px){.board-container .mode-indicator{bottom:calc(var(--tower-bar-height) + .2rem);left:auto;right:var(--spacing-xs);transform:none;font-size:var(--font-size-3xs);padding:.15rem .5rem}.board-container .mode-indicator .mode-hint{display:none}}