:root{--gold: #f4d03f;--gold-dark: #b8860b;--bg: #1a0a00;--bg-card: #2a1500;--bg-card2: #3a1e00;--border: #6b3a00;--text: #f4d03f;--text-dim: #a0845a;--green: #27ae60;--red: #e74c3c;--blue: #3498db;--purple: #9b59b6}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}button{cursor:pointer;border:none;outline:none;font-family:inherit}button:active{transform:scale(.97)}.btn{padding:10px 20px;border-radius:8px;font-size:14px;font-weight:600;transition:all .15s}.btn-gold{background:linear-gradient(135deg,#f4d03f,#b8860b);color:#1a0a00}.btn-red{background:linear-gradient(135deg,#e74c3c,#c0392b);color:#fff}.btn-green{background:linear-gradient(135deg,#27ae60,#1e8449);color:#fff}.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text)}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:16px}.resource-bar{display:flex;gap:8px;flex-wrap:wrap;padding:10px 16px;background:var(--bg-card);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.resource-item{display:flex;align-items:center;gap:4px;font-size:13px;font-weight:600}.screen{padding:12px 16px 24px;min-height:100%}.screen-title{font-size:20px;font-weight:700;margin-bottom:16px;color:var(--gold)}.nav-bar{position:fixed;bottom:0;left:0;right:0;background:var(--bg-card);border-top:1px solid var(--border);display:flex;z-index:100}.nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:8px 4px;font-size:10px;color:var(--text-dim);background:none;gap:2px;transition:color .15s}.nav-item.active{color:var(--gold)}.nav-item span:first-child{font-size:20px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:700}.badge-gold{background:var(--gold);color:#1a0a00}.badge-green{background:var(--green);color:#fff}.badge-red{background:var(--red);color:#fff}.badge-purple{background:var(--purple);color:#fff}.progress-bar{height:6px;background:var(--bg-card2);border-radius:3px;overflow:hidden;margin-top:6px}.progress-fill{height:100%;background:linear-gradient(90deg,var(--gold-dark),var(--gold));border-radius:3px;transition:width .3s}.shimmer{animation:shimmer 1.5s infinite;background:linear-gradient(90deg,var(--bg-card) 25%,var(--bg-card2) 50%,var(--bg-card) 75%);background-size:200% 100%}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@keyframes pulse-glow{0%,to{box-shadow:0 0 8px #3498db66}50%{box-shadow:0 0 20px #3498dbcc}}@keyframes hammer{0%,to{transform:rotate(0)}25%{transform:rotate(-20deg)}75%{transform:rotate(10deg)}}.upgrading-building{animation:pulse-glow 2s ease-in-out infinite}.hammer-icon{display:inline-block;animation:hammer .8s ease-in-out infinite}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.iso-scene{perspective:900px;perspective-origin:50% 40%;overflow:hidden}.iso-grid{position:relative;transform-style:preserve-3d;transform:rotateX(58deg) rotate(45deg);margin:0 auto}.iso-tile{position:absolute;box-sizing:border-box}.iso-building{position:absolute;transform-style:preserve-3d;cursor:pointer;transition:transform .25s}.iso-building:active{transform:scale(.96)}@keyframes iso-select-pulse{0%,to{filter:drop-shadow(0 0 6px var(--sel-glow))}50%{filter:drop-shadow(0 0 18px var(--sel-glow))}}.iso-selected{animation:iso-select-pulse 1.4s ease-in-out infinite;z-index:50}@keyframes float-hammer{0%,to{transform:translateZ(var(--h)) translateY(0) rotate(0)}50%{transform:translateZ(var(--h)) translateY(-4px) rotate(-18deg)}}@keyframes charBob{0%,to{transform:translateY(0)}50%{transform:translateY(-4px)}}@keyframes shield-spin{0%{box-shadow:0 0 6px #3498db80}50%{box-shadow:0 0 16px #3498dbf2}to{box-shadow:0 0 6px #3498db80}}.shield-badge{animation:shield-spin 1.6s ease-in-out infinite}.skeleton{background:linear-gradient(90deg,#ffffff0a 25%,#ffffff1a,#ffffff0a 75%);background-size:200% 100%;animation:shimmer 1.4s infinite;border-radius:8px}.nav-item{position:relative}.nav-item.active:after{content:"";position:absolute;bottom:2px;left:22%;right:22%;height:3px;border-radius:3px;background:var(--gold);box-shadow:0 0 8px var(--gold),0 0 14px #f4d03fb3}.nav-item.active span:first-child{transform:translateY(-1px);filter:drop-shadow(0 0 6px rgba(244,208,63,.6))}