:root{--bg-color:#1a2235;--text-color:#fff;--panel-bg:#1a2235d9;--glass-border:#ffffff1a;--accent-color:#5352ed}.light-mode{--bg-color:#f1f2f6;--text-color:#2f3542;--panel-bg:#ffffffd9;--glass-border:#0000001a}*{box-sizing:border-box;-webkit-user-select:none;user-select:none;margin:0;padding:0;font-family:Roboto,sans-serif}body{background-color:var(--bg-color);color:var(--text-color);width:100vw;height:100vh;transition:background-color .3s;overflow:hidden}#app{flex-direction:column;width:100%;height:100%;display:flex;position:relative}#universe{z-index:1;cursor:grab;width:100%;height:100%;position:absolute;top:0;left:0}#universe:active{cursor:grabbing}.glass-panel{background:var(--panel-bg);-webkit-backdrop-filter:blur(10px);border:1px solid var(--glass-border);box-shadow:0 4px 15px #00000026}#controls{z-index:10;border-radius:12px;flex-direction:column;gap:20px;width:280px;padding:20px;display:flex;position:absolute;top:20px;left:20px}.control-group{border-bottom:1px solid var(--glass-border);flex-direction:column;gap:12px;padding-bottom:20px;display:flex}.control-group:last-child{border-bottom:none;padding-bottom:0}.group-title{opacity:.7;text-transform:uppercase;letter-spacing:1.5px;font-size:13px;font-weight:700}.toggle-btns{border:1px solid var(--glass-border);border-radius:8px;display:flex;overflow:hidden}.toggle-btn{color:var(--text-color);cursor:pointer;background:0 0;border:none;flex:1;padding:10px 0;font-size:14px;font-weight:700;transition:all .2s}.toggle-btn:hover{background:#ffffff1a}.light-mode .toggle-btn:hover{background:#0000000d}.toggle-btn.active{background:var(--accent-color);color:#fff}.slider-container{opacity:.9;flex-direction:column;gap:8px;font-size:13px;display:flex}input[type=range]{width:100%;accent-color:var(--accent-color);cursor:pointer}#theme-toggle{cursor:pointer;z-index:10;border-color:var(--glass-border);width:40px;height:40px;color:var(--text-color);border-radius:8px;outline:none;justify-content:center;align-items:center;font-size:20px;transition:transform .2s;display:flex;position:absolute;top:20px;right:20px}#theme-toggle:hover{transform:scale(1.05)}.operations-grid{background:0 0;border:none;grid-template-columns:1fr 1fr;gap:5px;display:grid}.operations-grid .toggle-btn{border:1px solid var(--glass-border);border-radius:6px;padding:8px 0;font-size:13px}.author{opacity:.7;z-index:10;font-size:13px;position:absolute;bottom:10px;right:20px}.author a{color:var(--text-color);font-weight:700;text-decoration:none;transition:opacity .2s}.author a:hover{opacity:1;text-decoration:underline}.theme-colors{gap:12px;display:flex}.theme-color-btn{cursor:pointer;border:2px solid #0000;border-radius:50%;width:25px;height:25px;transition:transform .2s,border-color .2s;box-shadow:0 2px 5px #0003}.theme-color-btn.active{border-color:#fff;transform:scale(1.15)}.light-mode .theme-color-btn.active{border-color:#2f3542}