body{margin:0;overflow:hidden;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#000}#ui{position:absolute;top:20px;left:20px;color:#fff;background:#000000b3;padding:15px;border-radius:8px;pointer-events:none;-webkit-user-select:none;user-select:none;z-index:10}#mode-indicator{font-weight:700;font-size:1.1em;padding:4px 8px;border-radius:4px;margin-bottom:10px;display:inline-block}.mode-build{background:#4a90e2}.mode-terrain{background:#e67e22}.mode-live{background:#27ae60}.hud-onchange{transition:opacity .4s}.hud-visible{opacity:1;pointer-events:auto}.hud-hidden{opacity:.35;pointer-events:none}.hud-floor-warning{color:#f44;font-weight:700;margin-top:5px}#texture-menu{position:absolute;bottom:20px;left:50%;transform:translate(-50%);display:flex;gap:10px;background:#000c;padding:12px;border-radius:12px;z-index:110;border:2px solid #444;transition:transform .3s ease}#terrain-menu{position:absolute;bottom:20px;left:50%;transform:translate(-50%);display:flex;gap:10px;background:#000c;padding:12px;border-radius:12px;z-index:110;border:2px solid #e67e22;transition:transform .3s ease}.texture-option,.terrain-option{width:70px;height:70px;border-radius:8px;border:3px solid transparent;display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;text-align:center;background-size:cover;cursor:pointer;position:relative;background-color:#222}.texture-option .slot-number,.terrain-option .slot-number{position:absolute;top:2px;left:4px;font-weight:700;font-size:10px;background:#00000080;padding:0 3px;border-radius:3px}.texture-option .shape-icon,.terrain-option .shape-icon{font-size:20px;line-height:1;margin-bottom:2px}.texture-option .mat-name,.terrain-option .mat-name{font-size:8px;text-transform:uppercase;max-width:100%;overflow:hidden;white-space:nowrap}.texture-option.selected{border-color:#0f0;box-shadow:0 0 15px #00ff0080;background-color:#333}.terrain-option.selected{border-color:#e67e22;box-shadow:0 0 15px #e67e2280;background-color:#333}#inventory-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:#000000d9;display:none;justify-content:center;align-items:center;z-index:100;color:#fff}#inventory-content{background:#2a2a2a;padding:30px;border-radius:15px;width:90%;max-width:750px;height:70vh;max-height:580px;border:2px solid #444;box-shadow:0 0 30px #00000080;display:flex;flex-direction:column}.inventory-section{margin-bottom:20px}.inventory-grid{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;max-height:25vh;overflow-y:auto;padding-right:10px}.inv-item{width:65px;height:65px;background-color:#444;border-radius:8px;border:2px solid #555;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;font-size:10px;font-weight:700;text-align:center;transition:all .1s ease;padding-bottom:6px;box-sizing:border-box}.inv-item:hover{transform:translateY(-2px);border-color:#aaa;background-color:#555}.inv-item.active-pick{border-color:#4caf50;background-color:#333;box-shadow:0 0 10px #4caf5080;transform:translateY(-2px)}.inv-item-preview{width:28px;height:28px;margin-bottom:4px;border-radius:50%;border:1px solid rgba(255,255,255,.2);pointer-events:none;box-shadow:inset 0 -3px 5px #0000004d}.shape-grid{display:flex;gap:10px;margin-top:10px;flex-wrap:wrap}.shape-item{width:70px;height:70px;background:#444;border-radius:8px;border:2px solid #555;cursor:pointer;font-weight:700;font-size:11px;transition:all .2s;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;padding-bottom:8px;box-sizing:border-box}.shape-item:hover{transform:translateY(-2px);border-color:#aaa;background-color:#555}.shape-item.active{background-color:#333;border-color:#4a90e2;box-shadow:0 0 10px #4a90e280}.tabs{display:flex;border-bottom:2px solid #444;margin-bottom:15px}.tab{flex:1;text-align:center;padding:10px 5px;cursor:pointer;border-bottom:3px solid transparent;color:#888;font-weight:700;font-size:12px;transition:all .2s;border-radius:5px 5px 0 0}.tab.active{color:#fff;border-bottom-color:#4a90e2;background:#ffffff0d}.tab:hover:not(.active){color:#ccc;background:#ffffff05}.tab-icon{font-size:24px;margin-bottom:3px}.tab-content{display:none}.tab-content.active{display:block}.color-grid{display:flex;gap:12px;margin-top:10px;flex-wrap:wrap;padding:15px;background:#1e1e1e;border-radius:10px;border:1px solid #444}.color-item{width:35px;height:35px;border-radius:50%;border:2px solid #555;cursor:pointer;transition:all .2s cubic-bezier(.175,.885,.32,1.275);box-shadow:0 2px 5px #0000004d}.color-item:hover{transform:scale(1.2);border-color:#fff;z-index:1}.color-item.active{border-color:#0f0;transform:scale(1.1);box-shadow:0 0 15px #00ff0080}#crosshair{position:absolute;top:50%;left:50%;width:8px;height:8px;border:2px solid white;border-radius:50%;transform:translate(-50%,-50%);pointer-events:none;z-index:5}#instructions{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#fff;background:#000000d9;text-align:center;z-index:50;cursor:pointer}kbd{background:#444;padding:2px 5px;border-radius:3px;border:1px solid #666}.control-btn{flex:1;background:#444;color:#fff;border:1px solid #666;padding:12px;border-radius:6px;cursor:pointer;font-weight:700;transition:background .2s;font-family:inherit}.control-btn:hover:not(:disabled){background:#555}.control-btn:active:not(:disabled){background:#333}.control-btn:disabled{opacity:.5;cursor:not-allowed;color:#888}#error-tooltip{position:absolute;top:60%;left:50%;transform:translate(-50%,-50%);background:#c80000e6;color:#fff;padding:10px 20px;border-radius:5px;font-weight:700;pointer-events:none;z-index:200;box-shadow:0 4px 15px #00000080;animation:pulse-red 2s infinite}@keyframes pulse-red{0%{box-shadow:0 0 #c80000b3}70%{box-shadow:0 0 0 10px #c8000000}to{box-shadow:0 0 #c8000000}}