:root{--bg-color:#121212;--panel-bg:#1e1e1eb3;--panel-border:#ffffff1a;--text-main:#fff;--text-muted:#a0a0a0;--accent-color:#3b82f6;--accent-hover:#2563eb;--danger-color:#ef4444;--danger-hover:#dc2626;--success-color:#10b981;--success-hover:#059669;--input-bg:#00000080}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);font-family:Inter,sans-serif;overflow:hidden}#viewport{z-index:1;width:100vw;height:100vh;position:absolute;top:0;left:0}#ui-container{z-index:10;pointer-events:none;width:320px;max-height:calc(100vh - 40px);position:absolute;top:20px;left:20px;overflow-y:auto}#ui-container::-webkit-scrollbar{width:6px}#ui-container::-webkit-scrollbar-thumb{background:#fff3;border-radius:3px}.glass-panel{background:var(--panel-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--panel-border);pointer-events:auto;border-radius:12px;padding:20px;box-shadow:0 8px 32px #0000004d}h1{text-transform:uppercase;letter-spacing:1px;margin-bottom:20px;font-size:1.25rem;font-weight:700}h3{color:#e0e0e0;margin-bottom:10px;font-size:1rem;font-weight:600}hr{border:none;border-top:1px solid var(--panel-border);margin:20px 0}.text-small{font-size:.8rem}.text-muted{color:var(--text-muted)}.mt-2{margin-top:10px}.mt-3{margin-top:15px}.control-group{flex-direction:column;gap:8px;display:flex}.control-group.row{flex-direction:row;justify-content:space-between}label{font-size:.85rem;font-weight:500}input[type=number]{background:var(--input-bg);border:1px solid var(--panel-border);color:#fff;border-radius:6px;outline:none;padding:8px 12px;font-family:Inter,sans-serif;transition:border-color .2s}input[type=number]:focus{border-color:var(--accent-color)}.btn{text-align:center;cursor:pointer;-webkit-user-select:none;user-select:none;border:none;border-radius:6px;width:100%;padding:10px 16px;font-family:Inter,sans-serif;font-size:.9rem;font-weight:600;transition:all .2s;display:inline-block}.btn:disabled{opacity:.5;cursor:not-allowed}.primary-btn{background-color:var(--accent-color);color:#fff}.primary-btn:hover:not(:disabled){background-color:var(--accent-hover)}.secondary-btn{color:#fff;background-color:#ffffff1a}.secondary-btn:hover:not(:disabled){background-color:#fff3}.secondary-btn.active{background-color:#ffffff4d;box-shadow:inset 0 2px 4px #0003}.danger-btn{background-color:var(--danger-color);color:#fff}.danger-btn:hover:not(:disabled){background-color:var(--danger-hover)}.success-btn{background-color:var(--success-color);color:#fff}.success-btn:hover:not(:disabled){background-color:var(--success-hover)}.small-btn{padding:6px 12px;font-size:.8rem}.canvas-container{background:var(--input-bg);border:1px solid var(--panel-border);border-radius:8px;flex-direction:column;align-items:center;margin-top:10px;padding:10px;display:flex}#draw-canvas{cursor:crosshair;aspect-ratio:1;background:#2a2a2a;border-radius:4px;width:100%}#status-bar{text-align:center;color:#fbbf24;background:#0000004d;border-radius:4px;padding:8px}