:root{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:300;--bg-color: #ffffff;--text-color: #1a1a1a;--ui-bg: rgba(255, 255, 255, .9);--border-color: #e0e0e0;--shadow-sm: 0 2px 8px rgba(0, 0, 0, .04);--shadow-md: 0 8px 24px rgba(0, 0, 0, .06);--accent-color: #1a1a1a}body{margin:0;padding:0;overflow:hidden;background-color:var(--bg-color);color:var(--text-color);transition:background-color .5s ease}canvas{display:block;width:100vw;height:100vh}#app{width:100%;height:100%}#ui-container{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:10;display:flex;flex-direction:column;justify-content:flex-end;padding:12px;box-sizing:border-box}.controls-panel{pointer-events:auto;background:var(--ui-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-color);border-radius:24px;padding:0;width:100%;max-width:255px;display:flex;flex-direction:column;box-shadow:var(--shadow-md);position:absolute;bottom:12px;left:12px;z-index:100;transform:scale(.85);transform-origin:left bottom}.panel-header{display:flex;justify-content:space-between;align-items:center;padding:8px 10px;border-bottom:1px solid var(--border-color);cursor:move}.panel-title{margin:0;font-size:14px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--text-color)}.collapse-btn{background:transparent;border:none;font-size:20px;width:28px;height:28px;padding:0;cursor:pointer;color:var(--text-color);display:flex;align-items:center;justify-content:center;border-radius:8px;transition:background .2s ease}.collapse-btn:hover{background:#0000000d}.panel-content{padding:0;display:flex;flex-direction:column;transition:max-height .35s cubic-bezier(.4,0,.2,1),opacity .35s 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var(--border-color);box-shadow:var(--shadow-md);z-index:1000;font-size:14px;font-weight:500;color:var(--text-color);animation:slideIn .3s ease-out;pointer-events:auto}.notification-success{border-left:4px solid #4caf50}.notification-error{border-left:4px solid #f44336}.notification-info{border-left:4px solid #2196f3}.notification.fade-out{animation:slideOut .3s ease-in forwards}@keyframes slideIn{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes slideOut{0%{transform:translate(0);opacity:1}to{transform:translate(100%);opacity:0}}@media(max-width:768px){.controls-panel{max-width:calc(100% - 24px);width:calc(100% - 24px);transform:scale(1);bottom:12px;left:12px;right:12px;font-size:14px}.panel-header{padding:12px 16px}.panel-title{font-size:13px}.panel-content{padding:0}.tab-content{padding:12px;gap:10px;max-height:calc(100vh - 180px)}.tab-btn{padding:10px 8px;font-size:10px;min-width:50px}button{padding:8px 16px;font-size:13px;min-height:40px}.shape-selector{gap:8px}.shape-selector button{flex:1;min-width:0}input[type=range]{min-height:44px}input[type=color]{height:40px;min-height:44px}.custom-file-upload{padding:12px 20px;min-height:44px;font-size:14px}.control-group{margin-bottom:16px}.control-group h3{font-size:11px;margin-bottom:12px}.button-row{flex-direction:column;gap:8px}.button-row button{width:100%}.modal-content{width:calc(100% - 32px);max-width:calc(100% - 32px);margin:16px;max-height:calc(100vh - 32px);overflow-y:auto}.modal-header,.modal-body{padding:16px}.hint-message{font-size:13px;padding:12px 16px;max-width:calc(100% - 48px)}.data-panel{width:calc(100% - 24px);max-width:calc(100% - 24px);right:12px;top:12px;font-size:11px;padding:12px}.data-panel h3{font-size:12px;margin-bottom:8px}.data-item{font-size:11px;padding:4px 0}}@media(max-width:480px){.controls-panel{max-width:calc(100% - 16px);width:calc(100% - 16px);bottom:8px;left:8px;right:8px}.panel-content{padding:0}.tab-content{padding:10px;max-height:calc(100vh - 160px)}.tab-btn{padding:8px 6px;font-size:9px;min-width:45px}button{padding:10px 14px;font-size:12px}.modal-content{width:calc(100% - 16px);max-width:calc(100% - 16px);margin:8px}}@media(max-width:768px)and (orientation:landscape){.controls-panel{max-width:320px;width:320px}.panel-content{max-height:calc(100vh - 120px);overflow-y:auto}}@media(hover:none)and (pointer:coarse){button:hover{transform:none}button:active{transform:translateY(-1px);box-shadow:0 2px 8px #0000001a}.collapse-btn,.modal-close{width:44px;height:44px;min-width:44px;min-height:44px}}@media(-webkit-min-device-pixel-ratio:2),(min-resolution:192dpi){.controls-panel,button{border-width:.5px}}