:root{--bg-0:#f3f3f3;--bg-1:#ffffff;--bg-2:#f5f5f5;--bg-3:#ebebeb;--border:#e6e6e6;--border-strong:#d4d4d4;--text-0:#1f1f1f;--text-1:#5a5a5a;--text-2:#8a8a8a;--accent:#e85a54;--accent-strong:#d94540;--danger:#d94540;--success:#22c55e;--axis-x:#d94540;--axis-y:#22c55e;--axis-z:#3b82f6;--shadow-panel:0 8px 24px rgba(0,0,0,.1);--radius-sm:4px;--radius-md:6px;--radius-lg:10px;--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Helvetica Neue",Arial,sans-serif;--font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;width:100%}body{background:var(--bg-0);color:var(--text-0);font-family:var(--font-sans);font-size:13px;line-height:1.45;-webkit-font-smoothing:antialiased;overflow:hidden}button{font-family:inherit;font-size:12px;font-weight:600;color:inherit;background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:6px 10px;cursor:pointer;transition:background .12s ease,border-color .12s ease,color .12s ease}button:hover:not(:disabled){background:var(--bg-3);border-color:var(--border-strong)}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--accent-strong);border-color:var(--accent-strong);color:#fff;font-weight:650;letter-spacing:.01em}button.primary:hover:not(:disabled){background:var(--accent);border-color:var(--accent)}button.danger{background:#c73732;border-color:#c73732;color:#fff}button.danger:hover:not(:disabled){background:#d94540;border-color:#d94540}input,select{font-family:inherit;font-size:inherit;color:var(--text-0);background:var(--bg-1);border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:4px 6px;outline:none}input:focus,select:focus{border-color:var(--accent-strong)}.app-shell{display:grid;grid-template-rows:44px 1fr;grid-template-columns:1fr 320px;grid-template-areas:"toolbar toolbar" "viewer  panel";height:100%;width:100%}.toolbar{grid-area:toolbar;display:flex;align-items:center;gap:10px;padding:0 12px;background:var(--bg-1);border-bottom:1px solid var(--border)}.toolbar .brand{font-weight:650;font-size:14px;letter-spacing:.2px;color:var(--text-0)}.toolbar .brand{display:inline-flex;align-items:center;gap:8px}.toolbar .brand .brand-icon{margin-right:0;width:20px;height:20px;object-fit:contain;border-radius:4px;display:block;flex:0 0 auto}.toolbar .spacer{flex:1}.language-select{margin-left:4px;min-width:72px;padding:5px 8px}.viewer{grid-area:viewer;position:relative;background:#f0f0f0;overflow:hidden}.panel{grid-area:panel;background:var(--bg-1);border-left:1px solid var(--border);overflow-y:auto;display:flex;flex-direction:column}.panel .section{padding:12px 14px;border-bottom:1px solid var(--border)}.panel .section h3{margin:0 0 10px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text-2)}.panel .row{display:grid;grid-template-columns:80px 1fr;gap:8px;align-items:center;margin-bottom:6px}.panel .row:last-child{margin-bottom:0}.panel .row label{color:var(--text-1);font-size:12px;font-weight:500}.placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:10px;pointer-events:none;color:var(--text-2);z-index:1}.placeholder .hint{font-size:12px}.rotation-fix-overlay,.rotation-form-overlay{position:absolute;inset:0;z-index:5;pointer-events:none;display:flex;flex-direction:column;align-items:center;padding:20px 12px 24px}.rotation-fix-spacer,.rotation-form-spacer{flex:1;min-height:0;width:100%}.rotation-fix-controls,.rotation-form-controls{display:flex;flex-direction:column;align-items:center;gap:14px;pointer-events:none;width:100%;max-width:min(480px,100%)}.rotation-hint{padding:8px 14px;border-radius:var(--radius-md);background:#fffffff2;border:1px solid rgba(217,69,64,.28);color:var(--text-1);font-size:12px;pointer-events:none;white-space:nowrap;box-shadow:var(--shadow-panel)}.rotation-control-bar,.rotation-action-bar,.rotation-slider-bar{display:flex;align-items:center;gap:8px;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-lg);background:#fffffff5;box-shadow:var(--shadow-panel);pointer-events:auto}.rotation-slider-bar{width:min(420px,calc(100vw - 360px));gap:12px}.rotation-action-bar{flex-wrap:wrap;justify-content:center}.rotation-slider-label,.rotation-degree-unit{flex:0 0 auto;color:var(--text-2);font-size:12px;white-space:nowrap}.rotation-degree-input{flex:0 0 auto;width:72px;text-align:center;font-family:var(--font-mono);padding:4px 6px}.rotation-slider{flex:1;min-width:0;height:4px;appearance:none;-webkit-appearance:none;border:none;border-radius:999px;background:var(--border-strong);padding:0;cursor:pointer}.rotation-slider:focus{outline:none}.rotation-slider:focus-visible{box-shadow:0 0 0 2px #d9454059}.rotation-slider::-webkit-slider-runnable-track{height:4px;border-radius:999px;background:var(--border-strong)}.rotation-slider::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:16px;height:16px;margin-top:-6px;border-radius:50%;border:2px solid var(--accent-strong);background:#fff;box-shadow:0 1px 4px #00000026}.rotation-slider::-moz-range-track{height:4px;border-radius:999px;background:var(--border-strong)}.rotation-slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;border:2px solid var(--accent-strong);background:#fff;box-shadow:0 1px 4px #00000026}.rotation-control-bar input[type=number]{width:78px;text-align:center;font-family:var(--font-mono)}.rotation-control-bar label{display:inline-flex;align-items:center;gap:6px;color:var(--text-2)}.confirm-overlay{position:fixed;inset:0;z-index:20;display:flex;align-items:center;justify-content:center;padding:16px;background:#00000059}.confirm-dialog{width:min(420px,100%);padding:16px 18px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--bg-1);box-shadow:var(--shadow-panel)}.confirm-dialog h4{margin:0 0 8px;font-size:14px;font-weight:600;color:var(--text-0)}.confirm-dialog p{margin:0 0 14px;font-size:12px;line-height:1.5;color:var(--text-1)}.confirm-dialog-actions{display:flex;justify-content:flex-end;gap:8px}
/* typography-hierarchy */{}.panel button.primary{box-sizing:border-box}.placeholder{font-size:13px;font-weight:500;color:var(--text-2)}.placeholder .hint{font-size:12px;font-weight:400;color:var(--text-2)}.confirm-dialog h4{font-size:15px;font-weight:650}.confirm-dialog p{font-size:12px;font-weight:400;color:var(--text-1)}.language-select{font-size:12px;font-weight:500}
.rotation-snap-btns{display:inline-flex;align-items:center;gap:6px;flex:0 0 auto;margin-left:2px}.rotation-snap-btn{display:inline-flex;align-items:center;justify-content:center;gap:3px;min-width:0;padding:4px 8px;height:28px;border-radius:var(--radius-md);font-size:11px;line-height:1;white-space:nowrap}.rotation-snap-btn .rotation-snap-icon{font-size:14px;line-height:1;color:var(--accent-strong)}.rotation-snap-btn .rotation-snap-deg{font-family:var(--font-mono);font-size:11px;color:var(--text-1)}@media (max-width:720px){.rotation-slider-bar{width:min(420px,calc(100vw - 24px));flex-wrap:wrap;justify-content:center}}