:root{--bg-primary:#f5f5f5;--bg-secondary:#fff;--text-primary:#2c3e50;--text-secondary:#7f8c8d;--border-color:#dcdde1;--accent-color:#3498db;--accent-hover:#2980b9;--toolbar-bg:#fff;--panel-bg:#fff;--shadow:0 2px 10px #00000014;--viewer-bg:#fff;--button-bg:#ecf0f1;--button-text:#2c3e50;--badge-bg:#27ae60}[data-theme=dark]{--bg-primary:#1e1e1e;--bg-secondary:#2d2d30;--text-primary:#e0e0e0;--text-secondary:#a0a0a0;--border-color:#3e3e42;--accent-color:#3498db;--accent-hover:#5dade2;--toolbar-bg:#2d2d30;--panel-bg:#252526;--shadow:0 2px 10px #0006;--viewer-bg:#1a1a1a;--button-bg:#3e3e42;--button-text:#e0e0e0;--badge-bg:#27ae60}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text-primary);background-color:var(--bg-primary);height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;transition:background-color .3s,color .3s;overflow:hidden}#app{flex-direction:column;height:100vh;display:flex}#toolbar{background-color:var(--toolbar-bg);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow);z-index:10;justify-content:space-between;align-items:center;padding:.75rem 1.5rem;transition:background-color .3s,border-color .3s;display:flex}.toolbar-left,.toolbar-center,.toolbar-right{align-items:center;gap:.75rem;display:flex}.toolbar-left h1{color:var(--accent-color);font-size:1.1rem;font-weight:600}.badge{background-color:var(--badge-bg);color:#fff;border-radius:12px;padding:.25rem .75rem;font-size:.8rem;font-weight:500}button{background-color:var(--button-bg);color:var(--button-text);border:1px solid var(--border-color);cursor:pointer;border-radius:6px;align-items:center;gap:.4rem;padding:.5rem 1rem;font-size:.9rem;font-weight:500;transition:all .2s;display:flex}button:hover{background-color:var(--accent-color);color:#fff;border-color:var(--accent-color);transform:translateY(-1px);box-shadow:0 2px 8px #3498db4d}button:active{transform:translateY(0)}#viewer-container{background-color:var(--viewer-bg);flex:1;transition:background-color .3s;position:relative;overflow:hidden}#canvas-container{width:100%;height:100%}#loading-overlay{color:#fff;z-index:50;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background-color:#000000bf;flex-direction:column;justify-content:center;align-items:center;gap:1rem;width:100%;height:100%;display:flex;position:absolute;top:0;left:0}#loading-overlay.hidden{display:none}.spinner{border:4px solid #fff3;border-top-color:var(--accent-color);border-radius:50%;width:50px;height:50px;animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.progress-bar{background-color:#fff3;border-radius:3px;width:300px;height:6px;position:relative;overflow:hidden}.progress-fill{background-color:var(--accent-color);width:0%;height:100%;transition:width .3s}@keyframes indeterminate{0%{transform:translate(-100%)}to{transform:translate(100%)}}#loading-text{font-size:1rem;font-weight:500}#statusbar{background-color:var(--toolbar-bg);border-top:1px solid var(--border-color);color:var(--text-secondary);justify-content:space-between;padding:.5rem 1.5rem;font-family:Courier New,monospace;font-size:.85rem;transition:background-color .3s,border-color .3s;display:flex}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--accent-color)}@media (width<=768px){.toolbar-center{gap:.25rem}button{padding:.5rem .6rem;font-size:.85rem}.toolbar-left h1{font-size:.95rem}}#paper-size{background-color:var(--button-bg);color:var(--button-text);border:1px solid var(--border-color);cursor:pointer;border-radius:6px;outline:none;padding:.5rem .75rem;font-size:.85rem;transition:all .2s}#paper-size:hover{border-color:var(--accent-color)}#paper-size:focus{border-color:var(--accent-color);box-shadow:0 0 0 2px #3498db33}.notification{z-index:1000;color:#fff;border-radius:8px;max-width:400px;padding:1rem 1.5rem;font-weight:500;animation:.3s slideIn;position:fixed;top:80px;right:20px;box-shadow:0 4px 12px #0000004d}.notification.success{background-color:#10b981}.notification.error{background-color:#ef4444}.notification.info{background-color:#3b82f6}.notification.fade-out{animation:.3s forwards slideOut}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes slideOut{0%{opacity:1;transform:translate(0)}to{opacity:0;transform:translate(100%)}}.progress-fill.indeterminate{width:100%;animation:1.5s linear infinite indeterminate}#canvas-container{cursor:grab;-webkit-user-select:none;user-select:none;touch-action:none}