:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--color-bg-app:#080b10;--color-bg-surface-1:#0c1119;--color-bg-surface-2:#141b26;--color-bg-surface-3:#0f1522;--color-bg-toast:#101623;--color-text-primary:#c8d1e6;--color-text-strong:#e8eeff;--color-text-muted:#8f9ab4;--color-text-active:#0b0d12;--color-border-default:#2a3344;--color-border-subtle:#1f2530;--color-border-hover:#4a5a78;--color-focus:#7aa2ff;--color-active-bg:#7aa2ff;--space-1:4px;--space-2:6px;--space-3:8px;--space-4:10px;--space-5:12px;--space-6:14px;--radius-1:4px;--radius-2:6px;--radius-3:8px;--radius-4:10px;--shadow-panel:0 10px 24px #0000004d;--shadow-toast:0 8px 20px #00000047;--toast-info-bg:var(--color-bg-toast);--toast-info-border:#6e86b4;--toast-info-text:var(--color-text-primary);--toast-success-bg:var(--color-bg-toast);--toast-success-border:#50fa7b;--toast-success-text:var(--color-text-primary);--toast-error-bg:var(--color-bg-toast);--toast-error-border:#ff6b81;--toast-error-text:var(--color-text-primary);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body,#app{width:100%;height:100%;margin:0}body{background:var(--color-bg-app);color:var(--color-text-primary)}#app{grid-template-rows:auto 1fr auto;display:grid}.toolbar{gap:var(--space-3) var(--space-5);padding:var(--space-3) var(--space-5);border-bottom:1px solid var(--color-border-subtle);background:var(--color-bg-surface-1);grid-template-columns:auto 1fr;align-items:center;display:grid;overflow:visible}.toolbar-brand{align-content:center;gap:2px;display:grid}.toolbar h1{letter-spacing:.02em;margin:0;font-size:16px}.toolbar-subtitle,.toolbar-status{color:var(--color-text-muted);margin:0;font-size:13px}.toolbar-controls{align-items:flex-start;gap:var(--space-2) var(--space-3);flex-wrap:wrap;min-width:0;display:flex;overflow:visible}.toolbar-tools{align-items:center;gap:var(--space-2);flex-wrap:wrap;display:flex}.toolbar-section{border:1px solid var(--color-border-subtle);border-radius:var(--radius-2);min-width:0;max-width:100%;padding:var(--space-1) var(--space-2) var(--space-2);background:#0c101859;margin:0}.toolbar-section--reference{overflow:visible}.reference-section-root{position:relative}.reference-section-compact{align-items:center;gap:var(--space-1) var(--space-2);flex-wrap:wrap;display:flex}.reference-transform-toggle{padding:5px var(--space-3);font-size:11px}.reference-transform-popover{z-index:24;min-width:min(320px,100vw - 32px);max-width:min(480px,100vw - 24px);max-height:min(400px,72vh);padding:var(--space-2) var(--space-3);border:1px solid var(--color-border-default);border-radius:var(--radius-4);box-shadow:var(--shadow-panel);-webkit-backdrop-filter:blur(12px);background:#121822eb;position:absolute;top:calc(100% + 4px);left:0;overflow:hidden auto}.reference-transform-popover.is-hidden{display:none}.reference-transform-popover-inner{align-items:stretch;row-gap:var(--space-1);flex-direction:column;width:100%}.reference-transform-popover-inner.toolbar-section-row--wrap{row-gap:var(--space-1)}.reference-transform-popover .reference-scale-control,.reference-transform-popover .reference-rotation-control{gap:var(--space-1) var(--space-2)}.reference-transform-popover .reference-scale-range,.reference-transform-popover .reference-rotation-range{width:min(64px,22vw)}.reference-transform-popover .reference-scale-input,.reference-transform-popover .reference-rotation-input{flex:0 52px;width:52px;min-width:40px;padding:3px 4px}@media (width>=961px){.toolbar-controls>.toolbar-section{flex:140px}.toolbar-controls>.toolbar-section--tools{flex:none}.toolbar-controls>.toolbar-section--reference{flex:3 280px}}.toolbar-section-legend{padding:0 var(--space-1);text-transform:uppercase;letter-spacing:.07em;color:var(--color-text-muted);font-size:10px;font-weight:700}.toolbar-section-row{align-items:center;gap:var(--space-1) var(--space-2);flex-wrap:wrap;display:flex}.toolbar-section-row--wrap{row-gap:var(--space-2)}.reference-shape-control{align-items:center;gap:var(--space-2);padding:0 var(--space-2);min-width:0;max-width:100%;color:var(--color-text-muted);letter-spacing:.02em;font-size:12px;font-weight:600;display:inline-flex}.reference-shape-select{min-width:0;max-width:100%;padding:6px var(--space-3);border:1px solid var(--color-border-default);border-radius:var(--radius-2);background:var(--color-bg-surface-2);color:var(--color-text-primary);font:inherit;flex:110px;font-size:12px}.reference-scale-control{align-items:center;gap:var(--space-2);padding:0 var(--space-2);min-width:0;max-width:100%;color:var(--color-text-muted);letter-spacing:.02em;flex-wrap:wrap;font-size:12px;font-weight:600;display:inline-flex}.reference-scale-range{width:80px}.reference-scale-axis-label{color:var(--color-text-muted);text-align:center;min-width:10px;font-size:11px}.reference-scale-input{border:1px solid var(--color-border-default);border-radius:var(--radius-2);background:var(--color-bg-surface-2);width:64px;min-width:44px;color:var(--color-text-primary);font:inherit;text-align:right;flex:0 64px;padding:4px 6px;font-size:12px}.reference-scale-input:hover{border-color:var(--color-border-hover)}.reference-scale-input:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.reference-rotation-control{align-items:center;gap:var(--space-2);padding:0 var(--space-2);min-width:0;max-width:100%;color:var(--color-text-muted);letter-spacing:.02em;flex-wrap:wrap;font-size:12px;font-weight:600;display:inline-flex}.reference-rotation-axis-label{color:var(--color-text-muted);text-align:center;min-width:10px;font-size:11px}.reference-rotation-range{width:80px}.reference-rotation-input{border:1px solid var(--color-border-default);border-radius:var(--radius-2);background:var(--color-bg-surface-2);width:64px;min-width:44px;color:var(--color-text-primary);font:inherit;text-align:right;flex:0 64px;padding:4px 6px;font-size:12px}.reference-rotation-input:hover{border-color:var(--color-border-hover)}.reference-rotation-input:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.reference-shape-select:hover{border-color:var(--color-border-hover)}.reference-shape-select:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.perspective-modes{align-items:center;gap:var(--space-2);flex-wrap:wrap;display:flex}.tool-btn{padding:var(--space-2) var(--space-5);font:inherit;letter-spacing:.03em;color:var(--color-text-primary);background:var(--color-bg-surface-2);border:1px solid var(--color-border-default);border-radius:var(--radius-2);cursor:pointer;margin:0;font-size:12px;font-weight:600}.tool-btn:hover{border-color:var(--color-border-hover);color:var(--color-text-strong)}.tool-btn:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}.tool-btn.is-active{color:var(--color-text-active);background:var(--color-active-bg);border-color:var(--color-active-bg)}.viewport-shell{min-height:0;padding:var(--space-4)}#viewport{border:1px solid var(--color-border-subtle);border-radius:var(--radius-3);touch-action:none;width:100%;height:100%;display:block}.status-bar{gap:var(--space-3);padding:var(--space-3) var(--space-5);border-top:1px solid var(--color-border-subtle);background:var(--color-bg-surface-1);flex-wrap:wrap;align-items:center;min-width:0;display:flex}.status-chip{padding:var(--space-1) var(--space-3);color:var(--color-text-primary);background:var(--color-bg-surface-2);border:1px solid var(--color-border-default);border-radius:var(--radius-2);margin:0;font-size:12px}.status-hint{color:var(--color-text-strong);flex:auto;min-width:0}.shortcut-help-panel{z-index:18;width:min(380px,100vw - 32px);padding:var(--space-4) var(--space-5);background:var(--color-bg-surface-3);border:1px solid var(--color-border-default);border-radius:var(--radius-4);box-shadow:var(--shadow-panel);position:fixed;top:72px;right:16px}.shortcut-help-panel.is-hidden{display:none}.shortcut-help-head{justify-content:space-between;align-items:center;gap:var(--space-3);margin-bottom:var(--space-3);display:flex}.shortcut-help-head h2{margin:0;font-size:14px}.shortcut-help-close{padding:4px 8px}.shortcut-help-list{gap:var(--space-1);color:var(--color-text-primary);margin:0;padding-left:18px;font-size:13px;display:grid}.shortcut-help-list code{color:var(--color-text-strong);background:var(--color-bg-surface-2);border:1px solid var(--color-border-default);border-radius:var(--radius-1);padding:1px 4px}.toast-region{z-index:20;gap:var(--space-3);pointer-events:none;width:min(360px,100vw - 32px);display:grid;position:fixed;bottom:16px;right:16px}.toast{padding:var(--space-4) var(--space-5);color:var(--toast-info-text);background:var(--toast-info-bg);border:1px solid var(--color-border-default);border-left:4px solid var(--toast-info-border);border-radius:var(--radius-3);box-shadow:var(--shadow-toast);margin:0}.toast[data-toast-variant=info]{color:var(--toast-info-text);background:var(--toast-info-bg);border-left-color:var(--toast-info-border)}.toast[data-toast-variant=success]{color:var(--toast-success-text);background:var(--toast-success-bg);border-left-color:var(--toast-success-border)}.toast[data-toast-variant=error]{color:var(--toast-error-text);background:var(--toast-error-bg);border-left-color:var(--toast-error-border)}.toast-title{letter-spacing:.02em;margin:0 0 4px;font-size:12px;display:block}.toast-message{color:inherit;margin:0;font-size:12px}@media (width<=1280px){.toolbar{grid-template-columns:1fr;align-items:start}.shortcut-help-panel{top:130px}.reference-transform-popover .toolbar-section-row--wrap{gap:var(--space-2)}.reference-transform-popover .reference-scale-control,.reference-transform-popover .reference-rotation-control{align-items:center;row-gap:var(--space-1);padding:var(--space-1) var(--space-2);border-radius:var(--radius-2);background:#141b2680;flex-wrap:wrap}}@media (width<=960px){.toolbar-controls{gap:var(--space-2)}.toolbar-section{width:100%}.reference-transform-popover .toolbar-section-row--wrap{align-items:stretch;gap:var(--space-2);grid-template-columns:1fr;display:grid}.reference-transform-popover .reference-shape-control,.reference-transform-popover .reference-scale-control,.reference-transform-popover .reference-rotation-control{justify-content:flex-start;width:100%}.reference-transform-popover .reference-scale-range,.reference-transform-popover .reference-rotation-range{width:min(100px,38vw)}.status-bar{gap:var(--space-2)}}@media (width<=760px){.toolbar{padding:var(--space-3) var(--space-4);gap:var(--space-3)}.toolbar h1{font-size:15px}.tool-btn{padding:5px var(--space-4);font-size:11px}.reference-shape-select{flex:96px;min-width:min(96px,100%)}.reference-scale-input,.reference-rotation-input{width:58px;padding:3px 5px;font-size:11px}.reference-scale-range,.reference-rotation-range{width:min(132px,34vw)}.reference-transform-popover .reference-scale-range,.reference-transform-popover .reference-rotation-range{width:min(72px,32vw)}}