:root{--epoch-primary: #8B6914;--epoch-secondary: #556B2F;--epoch-background: #2C1810;--epoch-text: #E8D5B7;--epoch-accent: #D4A017;--font-main: "Segoe UI", system-ui, -apple-system, sans-serif;--font-mono: "Courier New", monospace}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;overflow:hidden;font-family:var(--font-main);background:#000}#game-container{width:100%;height:100vh;display:flex;flex-direction:column;background:var(--epoch-background);color:var(--epoch-text);transition:background-color 1s ease,color .5s ease;position:relative;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;-webkit-touch-callout:none}#top-bar{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;background:#0006;border-bottom:2px solid var(--epoch-primary);z-index:10;flex-shrink:0}#epoch-display{display:flex;align-items:center;gap:8px;font-size:1.2rem;font-weight:700}#epoch-icon{font-size:1.5rem}#progress-bar-container{flex:1;max-width:300px;height:20px;background:#00000080;border-radius:10px;margin:0 16px;position:relative;overflow:hidden;border:1px solid var(--epoch-primary)}#progress-bar-fill{height:100%;width:0%;background:linear-gradient(90deg,var(--epoch-primary),var(--epoch-accent));border-radius:10px;transition:width .3s ease}#progress-text{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);font-size:.75rem;font-weight:700;text-shadow:0 0 4px rgba(0,0,0,.8)}#timer{font-family:var(--font-mono);font-size:1rem;color:var(--epoch-accent)}#resource-panel{display:flex;justify-content:center;gap:24px;padding:10px 16px;background:#0000004d;border-bottom:1px solid rgba(255,255,255,.1);flex-shrink:0;flex-wrap:wrap}.resource-item{display:flex;align-items:center;gap:6px;padding:4px 12px;background:#0000004d;border-radius:8px;border:1px solid rgba(255,255,255,.1);transition:border-color .3s}.resource-item:hover{border-color:var(--epoch-accent)}.resource-item.negative{border-color:#f44}.resource-item.negative .resource-icon{animation:bug-shake .5s infinite}.resource-icon{font-size:1.3rem}.resource-name{font-size:.8rem;opacity:.7}.resource-amount{font-size:1.1rem;font-weight:700;color:var(--epoch-accent);font-family:var(--font-mono);min-width:40px;text-align:right}.resource-rate{font-size:.75rem;color:#8c8;font-family:var(--font-mono)}#main-area{flex:1;display:flex;overflow:hidden;min-height:0}#click-area{flex:1;position:relative;cursor:pointer;overflow:hidden;min-width:0;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;touch-action:manipulation}#click-area:active{cursor:grabbing}#game-canvas{width:100%;height:100%;display:block;image-rendering:pixelated;image-rendering:crisp-edges}#click-feedback{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;overflow:hidden}.click-float{position:absolute;font-size:1.2rem;font-weight:700;color:var(--epoch-accent);text-shadow:0 0 6px rgba(0,0,0,.8),0 0 12px var(--epoch-accent);pointer-events:none;animation:float-up 1s ease-out forwards;white-space:nowrap}@keyframes float-up{0%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-60px) scale(1.3)}}#upgrade-panel{width:320px;background:#00000080;border-left:2px solid var(--epoch-primary);display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}#upgrade-panel h2{padding:12px 16px;font-size:1rem;text-transform:uppercase;letter-spacing:2px;color:var(--epoch-accent);border-bottom:1px solid rgba(255,255,255,.1);flex-shrink:0}#upgrade-list{flex:1;overflow-y:auto;padding:8px}#upgrade-list::-webkit-scrollbar{width:6px}#upgrade-list::-webkit-scrollbar-track{background:#0000004d}#upgrade-list::-webkit-scrollbar-thumb{background:var(--epoch-primary);border-radius:3px}.upgrade-item{padding:10px 12px;margin-bottom:8px;background:#0006;border:1px solid rgba(255,255,255,.1);border-radius:8px;cursor:pointer;transition:all .2s ease;-webkit-user-select:none;user-select:none}.upgrade-item:hover:not(.purchased):not(.too-expensive){border-color:var(--epoch-accent);background:#ffffff0d;transform:translate(-2px)}.upgrade-item.affordable{border-color:var(--epoch-accent);box-shadow:0 0 8px rgba(var(--epoch-accent),.3)}.upgrade-item.affordable:hover{box-shadow:0 0 16px var(--epoch-accent)}.upgrade-item.too-expensive{opacity:.5;cursor:not-allowed}.upgrade-item.purchased{opacity:.4;cursor:default;border-color:#ffffff0d;background:#0003}.upgrade-item.purchased .upgrade-name:after{content:" ✓";color:#8c8}.upgrade-header{display:flex;align-items:center;gap:8px;margin-bottom:4px}.upgrade-icon{font-size:1.3rem}.upgrade-name{font-weight:700;font-size:.95rem}.upgrade-epoch-badge{font-size:.7rem;padding:2px 6px;background:var(--epoch-accent);color:#000;border-radius:4px;font-weight:700;animation:pulse-badge 1.5s infinite}.upgrade-description{font-size:.8rem;opacity:.7;margin-bottom:6px;line-height:1.3}.upgrade-cost{font-size:.85rem;font-family:var(--font-mono);color:var(--epoch-accent)}#status-bar{display:flex;justify-content:space-between;align-items:center;padding:6px 16px;background:#0006;border-top:1px solid rgba(255,255,255,.1);font-size:.85rem;flex-shrink:0}#click-power{color:var(--epoch-accent);font-family:var(--font-mono)}#auto-rate{color:#8c8;font-family:var(--font-mono)}#epoch-hint{opacity:.6;font-style:italic;max-width:40%;text-align:right;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#epoch-transition{position:fixed;top:0;left:0;width:100%;height:100%;background:#000000f2;display:flex;align-items:center;justify-content:center;z-index:100;opacity:0;transition:opacity .5s ease}#epoch-transition.active{opacity:1}#transition-content{text-align:center;animation:transition-appear .8s ease-out}#transition-icon{font-size:5rem;margin-bottom:20px;animation:transition-icon-bounce 1s ease infinite}#transition-title{font-size:2.5rem;color:var(--epoch-accent);margin-bottom:12px;text-shadow:0 0 20px var(--epoch-accent)}#transition-description{font-size:1.2rem;opacity:.8;max-width:400px}#end-screen{position:fixed;top:0;left:0;width:100%;height:100%;background:#030014;display:flex;align-items:center;justify-content:center;z-index:200;animation:fade-in 2s ease}#end-content{text-align:center;max-width:600px;padding:40px}#ai-brain{font-size:6rem;margin-bottom:30px}#ai-brain.pulsing{animation:ai-pulse 2s ease-in-out infinite}.end-quote{font-size:1.3rem;line-height:2;color:#a78bfa;font-style:italic;margin-bottom:30px;animation:fade-in 2s ease}.end-label{font-size:3rem;font-weight:700;color:#8b5cf6;text-shadow:0 0 30px #8B5CF6;margin-bottom:20px;letter-spacing:10px}#end-time{font-size:1rem;color:#666;animation:fade-in 1s ease}.hidden{display:none!important}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes transition-appear{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}@keyframes transition-icon-bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-15px)}}@keyframes ai-pulse{0%,to{transform:scale(1);filter:drop-shadow(0 0 10px #8B5CF6)}50%{transform:scale(1.1);filter:drop-shadow(0 0 30px #8B5CF6) drop-shadow(0 0 60px #A78BFA)}}@keyframes pulse-badge{0%,to{opacity:1}50%{opacity:.6}}@keyframes bug-shake{0%,to{transform:translate(0)}25%{transform:translate(-2px)}75%{transform:translate(2px)}}@media(max-width:768px){#main-area{flex-direction:column}#upgrade-panel{width:100%;max-height:40vh;border-left:none;border-top:2px solid var(--epoch-primary)}#resource-panel{gap:12px}.resource-name,#epoch-hint{display:none}#progress-bar-container{max-width:150px}}@media(max-width:480px){#top-bar{padding:4px 8px;font-size:.9rem}#epoch-display{font-size:1rem}.upgrade-item{padding:8px}#status-bar{font-size:.75rem;padding:4px 8px}}[data-epoch="1"]{--epoch-primary: #8B6914;--epoch-secondary: #556B2F;--epoch-background: #2C1810;--epoch-text: #E8D5B7;--epoch-accent: #D4A017}[data-epoch="1"] #click-area{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32'%3E%3Ctext y='24' font-size='24'%3E🪨%3C/text%3E%3C/svg%3E") 16 16,pointer}[data-epoch="2"]{--epoch-primary: #C9B037;--epoch-secondary: #4169E1;--epoch-background: #1A1A2E;--epoch-text: #F5F5DC;--epoch-accent: #FFD700}[data-epoch="2"] #click-area{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32'%3E%3Ctext y='24' font-size='24'%3E⛏️%3C/text%3E%3C/svg%3E") 16 16,pointer}[data-epoch="3"]{--epoch-primary: #8B0000;--epoch-secondary: #696969;--epoch-background: #1C1C1C;--epoch-text: #D4C5A9;--epoch-accent: #B22222}[data-epoch="3"] #click-area{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32'%3E%3Ctext y='24' font-size='24'%3E⚔️%3C/text%3E%3C/svg%3E") 16 16,pointer}[data-epoch="4"]{--epoch-primary: #FF6600;--epoch-secondary: #808080;--epoch-background: #1A1A1A;--epoch-text: #CCCCCC;--epoch-accent: #FF4500}[data-epoch="4"] #click-area{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32'%3E%3Ctext y='24' font-size='24'%3E⚙️%3C/text%3E%3C/svg%3E") 16 16,pointer}[data-epoch="5"]{--epoch-primary: #4169E1;--epoch-secondary: #C0C0C0;--epoch-background: #0D1117;--epoch-text: #E6EDF3;--epoch-accent: #58A6FF}[data-epoch="5"] #click-area{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32'%3E%3Ctext y='24' font-size='24'%3E💾%3C/text%3E%3C/svg%3E") 16 16,pointer}[data-epoch="6"]{--epoch-primary: #00FF41;--epoch-secondary: #1E1E1E;--epoch-background: #0D1117;--epoch-text: #C9D1D9;--epoch-accent: #00FF41}[data-epoch="6"] #click-area{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32'%3E%3Ctext y='24' font-size='24'%3E⌨️%3C/text%3E%3C/svg%3E") 16 16,pointer}[data-epoch="6"] .resource-amount,[data-epoch="6"] #upgrade-panel{font-family:Courier New,monospace}[data-epoch="7"]{--epoch-primary: #8B5CF6;--epoch-secondary: #06B6D4;--epoch-background: #030014;--epoch-text: #E0E7FF;--epoch-accent: #A78BFA}[data-epoch="7"] #click-area{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32'%3E%3Ctext y='24' font-size='24'%3E🧠%3C/text%3E%3C/svg%3E") 16 16,pointer}[data-epoch="7"] #game-container{animation:ai-background-pulse 4s ease-in-out infinite}@keyframes ai-background-pulse{0%,to{background:#030014}50%{background:#0a0025}}[data-epoch="6"] #top-bar,[data-epoch="6"] #status-bar,[data-epoch="6"] #upgrade-panel{border-color:#00ff41}[data-epoch="7"] #top-bar,[data-epoch="7"] #status-bar{border-color:#8b5cf6;box-shadow:0 0 10px #8b5cf64d}[data-epoch="7"] #upgrade-panel{border-color:#8b5cf6;box-shadow:-5px 0 15px #8b5cf633}[data-epoch="7"] .upgrade-item.affordable{box-shadow:0 0 12px #8b5cf680}