:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.monaco-editor-container{display:flex;flex-direction:column;background-color:var(--osc-editor-bg);border-radius:4px;overflow:hidden;box-shadow:0 2px 8px #0000001a;position:relative}.monaco-loading{display:flex;align-items:center;justify-content:center;height:calc(100% - 40px);font-size:16px;color:var(--osc-editor-loading-color);background-color:var(--osc-editor-loading-bg)}.monaco-editor-toolbar{display:flex;align-items:center;justify-content:space-between;background-color:var(--osc-editor-toolbar-bg);border-bottom:1px solid var(--osc-editor-toolbar-border);padding:8px 12px;flex-wrap:wrap;gap:8px;height:40px;box-sizing:border-box}.toolbar-group{display:flex;align-items:center;gap:6px}.monaco-editor-toolbar button{background-color:var(--osc-editor-btn-bg);color:#fff;border:none;padding:4px 10px;border-radius:3px;cursor:pointer;font-size:12px;transition:background-color .2s;height:24px;display:flex;align-items:center;gap:4px}.monaco-editor-toolbar button:hover:not(:disabled){background-color:var(--osc-editor-btn-hover)}.monaco-editor-toolbar button:disabled{background-color:var(--osc-editor-btn-disabled);color:var(--osc-editor-btn-disabled-text);cursor:not-allowed}.monaco-editor-statusbar{display:flex;align-items:center;justify-content:space-between;background-color:var(--osc-editor-statusbar-bg);border-top:1px solid var(--osc-editor-statusbar-border);padding:0 12px;height:22px;box-sizing:border-box;font-size:11px;color:var(--osc-editor-statusbar-text);gap:12px}.monaco-editor-statusbar .status-items-group{display:flex;align-items:center;gap:15px}.monaco-editor-statusbar .beian-info{margin-left:auto;color:var(--osc-editor-beian)}.status-item{display:flex;align-items:center;padding:0 4px}.monaco-editor-container .react-monaco-editor-container{flex:1;overflow:hidden}@media(max-width:768px){.monaco-editor-toolbar{height:auto;padding:6px 8px}.toolbar-group{gap:4px}.monaco-editor-toolbar button{padding:3px 8px;font-size:11px}.monaco-editor-statusbar{font-size:10px;padding:0 8px;gap:8px}}.monaco-editor-container ::-webkit-scrollbar{width:8px;height:8px}.monaco-editor-content{position:relative;flex:1;height:calc(100% - 62px);overflow:hidden}.preview-area{position:absolute;right:0;top:0;width:50%;height:100%;z-index:10;overflow:hidden;background-color:var(--osc-editor-preview-bg);border-left:1px solid var(--osc-editor-preview-border);box-shadow:-4px 0 12px #00000080;display:none;flex-direction:column;padding:2px}.preview-area.open{display:flex}.editor-disabled-overlay{position:absolute;inset:0;background:var(--osc-editor-disabled-overlay);z-index:5;pointer-events:all}.monaco-editor-toolbar button.active{background-color:var(--osc-editor-btn-active)}.monaco-editor-toolbar button.active:hover{background-color:var(--osc-editor-btn-active-hover)}.monaco-editor-container ::-webkit-scrollbar-track{background:var(--osc-editor-scrollbar-track)}.monaco-editor-container ::-webkit-scrollbar-thumb{background:var(--osc-editor-scrollbar-thumb);border-radius:4px}.monaco-editor-container ::-webkit-scrollbar-thumb:hover{background:var(--osc-editor-scrollbar-thumb-hover)}.monaco-editor-toolbar button{transition:all .2s ease}.monaco-editor-toolbar button:active:not(:disabled){transform:scale(.98)}.monaco-editor-container.loading{position:relative}.monaco-editor-container.loading:after{content:"";position:absolute;inset:0;background-color:#00000080;display:flex;align-items:center;justify-content:center}.monaco-editor-container.loading:before{content:"";position:absolute;top:50%;left:50%;width:40px;height:40px;margin:-20px 0 0 -20px;border:3px solid var(--osc-editor-spinner-border);border-top:3px solid var(--osc-editor-spinner-accent);border-radius:50%;animation:spin 1s linear infinite;z-index:1}.monaco-editor-container .error-message{color:#f44747;background-color:var(--osc-editor-error-bg);padding:8px 12px;border-left:3px solid #f44747;margin:8px 0;font-size:12px}.monaco-editor-container .success-message{color:#4ec9b0;background-color:var(--osc-editor-success-bg);padding:8px 12px;border-left:3px solid #4ec9b0;margin:8px 0;font-size:12px}.notification{position:fixed;display:flex;align-items:center;padding:12px 16px;border-radius:8px;box-shadow:0 4px 12px #00000026;background-color:var(--osc-surface);border:1px solid var(--osc-border);z-index:10000;max-width:360px;animation:slideIn .3s ease-out;transition:all .3s ease-out}.notification-top-right{top:20px;right:20px}.notification-top-left{top:20px;left:20px}.notification-bottom-right{bottom:20px;right:20px}.notification-bottom-left{bottom:20px;left:20px}.notification-top-center{top:20px;left:50%;transform:translate(-50%)}.notification-bottom-center{bottom:20px;left:50%;transform:translate(-50%)}.notification-info{background-color:var(--osc-notification-info-bg);border-color:var(--osc-notification-info-border);color:var(--osc-notification-info-text)}.notification-success{background-color:var(--osc-notification-success-bg);border-color:var(--osc-notification-success-border);color:var(--osc-notification-success-text)}.notification-warning{background-color:var(--osc-notification-warning-bg);border-color:var(--osc-notification-warning-border);color:var(--osc-notification-warning-text)}.notification-error{background-color:var(--osc-notification-error-bg);border-color:var(--osc-notification-error-border);color:var(--osc-notification-error-text)}.notification-icon{margin-right:12px;font-size:18px;font-weight:700;width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:50%}.notification-info .notification-icon{background-color:var(--osc-notification-info-border);color:var(--osc-notification-info-text)}.notification-success .notification-icon{background-color:var(--osc-notification-success-border);color:var(--osc-notification-success-text)}.notification-warning .notification-icon{background-color:var(--osc-notification-warning-border);color:var(--osc-notification-warning-text)}.notification-error .notification-icon{background-color:var(--osc-notification-error-border);color:var(--osc-notification-error-text)}.notification-content{flex:1;font-size:14px;line-height:1.5;word-wrap:break-word}.notification-close-button{background:none;border:none;font-size:20px;cursor:pointer;padding:0;width:20px;height:20px;display:flex;align-items:center;justify-content:center;margin-left:12px;opacity:.7;transition:opacity .2s;color:inherit}.notification-close-button:hover{opacity:1}.notification-progress-container{position:absolute;bottom:0;left:0;right:0;height:3px;background-color:#0000001a;border-radius:0 0 8px 8px;overflow:hidden}.notification-progress-bar{height:100%;background-color:currentColor;transition:width .1s linear}@keyframes slideIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.notification-top-right{animation:slideInRight .3s ease-out}.notification-top-left{animation:slideInLeft .3s ease-out}.notification-bottom-right{animation:slideInRightBottom .3s ease-out}.notification-bottom-left{animation:slideInLeftBottom .3s ease-out}.notification-top-center,.notification-bottom-center{animation:slideIn .3s ease-out}@keyframes slideInRight{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-100%)}to{opacity:1;transform:translate(0)}}@keyframes slideInRightBottom{0%{opacity:0;transform:translate(100%,100%)}to{opacity:1;transform:translate(0)}}@keyframes slideInLeftBottom{0%{opacity:0;transform:translate(-100%,100%)}to{opacity:1;transform:translate(0)}}.notification.hidden{opacity:0;transform:translateY(-20px)}@media(max-width:768px){.notification{max-width:calc(100% - 40px);font-size:13px}.notification-top-center,.notification-bottom-center{left:20px;right:20px;transform:none}.notification-content{font-size:13px}}.notification-container{position:fixed;z-index:10000;top:0;right:0;padding:20px;pointer-events:none}.notification-container .notification{position:relative;margin-bottom:12px;pointer-events:auto}.notification:hover{box-shadow:0 6px 16px #0003;transform:translateY(-2px)}*{box-sizing:border-box;margin:0;padding:0}:root{--osc-bg: #f5f5f5;--osc-surface: #ffffff;--osc-surface-alt: #fafafa;--osc-surface-subtle: #f9fafb;--osc-header-bg: #ffffff;--osc-header-border: #e5e7eb;--osc-sidebar-bg: #fafafa;--osc-sidebar-border: #e5e7eb;--osc-text: #333333;--osc-text-primary: #111827;--osc-text-secondary: #374151;--osc-text-muted: #6b7280;--osc-text-muted-alt: #6c757d;--osc-heading: #111827;--osc-primary: #165dff;--osc-primary-hover: #0d47a1;--osc-primary-light: #3b82f6;--osc-primary-focus-ring: rgba(22, 93, 255, .1);--osc-border: #e5e7eb;--osc-border-light: #d1d5db;--osc-border-hover: #9ca3af;--osc-border-subtle: #f3f4f6;--osc-input-bg: #ffffff;--osc-input-border: #d1d5db;--osc-hover: #f3f4f6;--osc-hover-intense: #e5e7eb;--osc-hover-blue: #dbeafe;--osc-scrollbar-track: #f1f1f1;--osc-scrollbar-thumb: #c1c1c1;--osc-scrollbar-thumb-hover: #a8a8a8;--osc-danger: #ef4444;--osc-danger-hover: #dc2626;--osc-danger-bg: #fef2f2;--osc-danger-text: #b91c1c;--osc-success-bg: #d4edda;--osc-success-border: #c3e6cb;--osc-success-text: #155724;--osc-warning-bg: #fff3cd;--osc-warning-border: #ffeaa7;--osc-warning-text: #856404;--osc-warning-text-on-dark: #f0f0f0;--osc-notification-info-bg: #f0f9ff;--osc-notification-info-border: #bae6fd;--osc-notification-info-text: #0369a1;--osc-notification-success-bg: #f0fdf4;--osc-notification-success-border: #bbf7d0;--osc-notification-success-text: #15803d;--osc-notification-warning-bg: #fffbeb;--osc-notification-warning-border: #fef08a;--osc-notification-warning-text: #b45309;--osc-notification-error-bg: #fef2f2;--osc-notification-error-border: #fecaca;--osc-notification-error-text: #b91c1c;--osc-error-muted: #374151;--osc-beian-color: #666;--osc-beian-link-color: #666;--osc-beian-link-hover: #444;--osc-beian-separator: #ccc;--osc-admin-primary: #007bff;--osc-admin-primary-hover: #0056b3;--osc-admin-primary-light: #66b3ff;--osc-admin-primary-lighter: #99ccff;--osc-admin-card-border: #e0e0e0;--osc-admin-table-header: #f8f9fa;--osc-admin-danger: #dc3545;--osc-admin-danger-hover: #c82333;--osc-admin-disabled: #6c757d;--osc-admin-result-detail: #6c757d;--osc-editor-bg: #ffffff;--osc-editor-toolbar-bg: #f0f0f0;--osc-editor-toolbar-border: #ccc;--osc-editor-btn-bg: #007acc;--osc-editor-btn-hover: #0097ff;--osc-editor-btn-disabled: #ccc;--osc-editor-btn-disabled-text: #666;--osc-editor-btn-active: #005a9e;--osc-editor-btn-active-hover: #007acc;--osc-editor-statusbar-bg: #f7f7f7;--osc-editor-statusbar-border: #ccc;--osc-editor-statusbar-text: #333;--osc-editor-beian: #1177bb;--osc-editor-scrollbar-track: #f1f1f1;--osc-editor-scrollbar-thumb: #888;--osc-editor-scrollbar-thumb-hover: #555;--osc-editor-error-bg: #f3f3f3;--osc-editor-success-bg: #f3f3f3;--osc-editor-loading-bg: #f5f5f5;--osc-editor-loading-color: #666;--osc-editor-spinner-border: #f3f3f3;--osc-editor-spinner-accent: #0e639c;--osc-editor-preview-bg: #ffffff;--osc-editor-preview-border: #ccc;--osc-editor-disabled-overlay: rgba(128, 128, 128, .3);--osc-canvas-background: #ffffff}body.dark-theme{--osc-error-muted: #fecaca;--osc-beian-color: #aaa;--osc-beian-link-color: #aaa;--osc-beian-link-hover: #ccc;--osc-beian-separator: #666;--osc-admin-primary: #66b3ff;--osc-admin-primary-hover: #0056b3;--osc-admin-primary-light: #66b3ff;--osc-admin-primary-lighter: #99ccff;--osc-admin-card-border: #404040;--osc-admin-table-header: #404040;--osc-admin-danger: #e74c3c;--osc-admin-danger-hover: #c0392b;--osc-admin-disabled: #5a5a5a;--osc-admin-result-detail: #7a9e85;--osc-editor-bg: #1e1e1e;--osc-editor-toolbar-bg: #2d2d30;--osc-editor-toolbar-border: #464647;--osc-editor-btn-bg: #0e639c;--osc-editor-btn-hover: #1177bb;--osc-editor-btn-disabled: #464647;--osc-editor-btn-disabled-text: #858585;--osc-editor-btn-active: #007acc;--osc-editor-btn-active-hover: #0097ff;--osc-editor-statusbar-bg: #252526;--osc-editor-statusbar-border: #464647;--osc-editor-statusbar-text: #cccccc;--osc-editor-beian: #1177bb;--osc-editor-scrollbar-track: #1e1e1e;--osc-editor-scrollbar-thumb: #555;--osc-editor-scrollbar-thumb-hover: #777;--osc-editor-error-bg: #2d2d30;--osc-editor-success-bg: #2d2d30;--osc-editor-loading-bg: #2d2d30;--osc-editor-loading-color: #ccc;--osc-editor-spinner-border: #2d2d30;--osc-editor-spinner-accent: #4da6ff;--osc-editor-preview-bg: #1e1e1e;--osc-editor-preview-border: #464647;--osc-editor-disabled-overlay: rgba(0, 0, 0, .5);--osc-success-bg: #1e3a2f;--osc-success-border: #2d5a3f;--osc-success-text: #8fdfb4;--osc-warning-bg: #332701;--osc-warning-border: #665c00;--osc-warning-text: #ffd700;--osc-warning-text-on-dark: #f0f0f0;--osc-notification-info-bg: #1e3a8a;--osc-notification-info-border: #3b82f6;--osc-notification-info-text: #bfdbfe;--osc-notification-success-bg: #166534;--osc-notification-success-border: #22c55e;--osc-notification-success-text: #bbf7d0;--osc-notification-warning-bg: #92400e;--osc-notification-warning-border: #f59e0b;--osc-notification-warning-text: #fef08a;--osc-notification-error-bg: #991b1b;--osc-notification-error-border: #ef4444;--osc-notification-error-text: #fecaca;--osc-loading-bg: #1e1e1e;--osc-spinner-border: #2d2d30;--osc-spinner-accent: #4da6ff;--osc-select-arrow: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23cccccc' d='M6 9L1 4h10z'/%3E%3C/svg%3E");--osc-canvas-background: #1e1e1e;--osc-bg: #1e1e1e;--osc-surface: #2d2d30;--osc-surface-alt: #252526;--osc-surface-subtle: #2d2d30;--osc-header-bg: #2d2d30;--osc-header-border: #464647;--osc-sidebar-bg: #252526;--osc-sidebar-border: #464647;--osc-text: #cccccc;--osc-text-primary: #e0e0e0;--osc-text-secondary: #aaaaaa;--osc-text-muted: #888888;--osc-text-muted-alt: #6c757d;--osc-heading: #e0e0e0;--osc-primary: #66b3ff;--osc-primary-hover: #4da6ff;--osc-primary-light: #99ccff;--osc-primary-focus-ring: rgba(102, 179, 255, .15);--osc-border: #464647;--osc-border-light: #555555;--osc-border-hover: #666666;--osc-border-subtle: #333333;--osc-input-bg: #3c3c3c;--osc-input-border: #555555;--osc-hover: #3c3c3c;--osc-hover-intense: #505050;--osc-hover-blue: #1e3a5f;--osc-scrollbar-track: #1e1e1e;--osc-scrollbar-thumb: #555555;--osc-scrollbar-thumb-hover: #777777;--osc-danger: #f87171;--osc-danger-hover: #ef4444;--osc-danger-bg: #3b1a1a;--osc-danger-text: #fca5a5}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--osc-bg);color:var(--osc-text);transition:background-color .3s,color .3s}#root{width:100vw;height:100vh;max-width:none;margin:0;padding:0;text-align:left}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden}.app-header{display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:60px;background-color:var(--osc-header-bg);border-bottom:1px solid var(--osc-border);box-shadow:0 2px 4px #0000001a;z-index:10;transition:background-color .3s,border-color .3s}.header-left{display:flex;align-items:center;gap:30px}.header-title{display:flex;align-items:center;gap:12px}.user-section{display:flex;align-items:center;gap:6px}.user-avatar{font-size:16px;color:var(--osc-text-muted-alt);cursor:pointer;position:relative;transition:color .2s ease}.user-avatar:hover{color:var(--osc-primary)}.user-tooltip{position:absolute;top:100%;left:50%;transform:translate(-50%);background-color:var(--osc-surface);border:1px solid var(--osc-border);border-radius:6px;padding:8px 12px;font-size:14px;color:var(--osc-text-secondary);white-space:nowrap;box-shadow:0 4px 6px #0000001a;z-index:1000;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;margin-top:5px}.user-avatar:hover .user-tooltip{opacity:1;visibility:visible}.logout-button{background:none;border:none;color:var(--osc-primary);font-size:13px;font-weight:500;cursor:pointer;padding:0;text-decoration:underline;transition:color .2s ease}.logout-button:hover{color:var(--osc-primary-hover);text-decoration:none}.header-logo{width:32px;height:32px;border-radius:6px;object-fit:cover}.app-header h1{font-size:20px;font-weight:600;color:var(--osc-heading);margin:0}.about-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.about-logo{width:48px;height:48px;border-radius:8px;object-fit:cover}.header-controls{display:flex;gap:8px;align-items:center;margin-left:auto}.control-button{padding:8px 12px;border:1px solid var(--osc-border-light);border-radius:6px;background-color:var(--osc-input-bg);color:var(--osc-text-secondary);font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease;height:36px;display:flex;align-items:center;gap:6px}.control-button:hover{background-color:var(--osc-hover);border-color:var(--osc-border-hover);box-shadow:0 2px 6px #0000001f}.dropdown-menu{position:relative;display:inline-block}.dropdown-toggle{position:relative;z-index:10;padding:8px 16px;border:1px solid var(--osc-border-light);border-radius:6px;background-color:var(--osc-input-bg);color:var(--osc-text-secondary);font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease;height:36px;display:flex;align-items:center;gap:6px;justify-content:center}.dropdown-toggle:hover{background-color:var(--osc-hover);border-color:var(--osc-border-hover);box-shadow:0 2px 6px #0000001f}.dropdown-content{position:absolute;right:0;top:100%;margin-top:5px;background-color:var(--osc-surface);border:1px solid var(--osc-border);border-radius:6px;box-shadow:0 6px 16px #00000026;z-index:100;min-width:180px;overflow:hidden}.dropdown-item{width:100%;padding:10px 16px;border:none;background:none;text-align:left;font-size:14px;font-weight:500;color:var(--osc-text-secondary);cursor:pointer;transition:all .2s ease;display:flex;align-items:center;gap:8px;white-space:nowrap}.dropdown-item:hover{background-color:var(--osc-hover-blue)}.language-switcher{display:flex;align-items:center}.language-select{padding:8px 32px 8px 12px;border:1px solid var(--osc-border-light);border-radius:6px;background-color:var(--osc-input-bg);color:var(--osc-text-secondary);font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease;height:36px;min-width:90px;outline:none;appearance:none;background-image:var(--osc-select-arrow);background-repeat:no-repeat;background-position:right 10px center}.language-select:hover{background-color:var(--osc-hover);border-color:var(--osc-border-hover);box-shadow:0 2px 6px #0000001f;transform:translateY(-1px)}.language-select:focus{border-color:#6b7280;box-shadow:0 0 0 3px #9ca3af33}.language-switcher{position:relative}.language-switcher .dropdown-content{min-width:180px}.language-switcher .dropdown-item.active{background-color:transparent;color:var(--osc-primary-light);font-weight:700}.language-switcher .dropdown-item span{display:flex;align-items:center;gap:8px}.language-switcher .dropdown-item span:first-child{width:20px;text-align:center}.app-body{display:flex;flex-direction:row;flex:1;overflow:hidden}.app-main{flex:1;display:flex;overflow:hidden;padding:0;min-width:0}.sidebar{width:280px;min-width:0;transition:width .3s ease;overflow:hidden;border-right:1px solid var(--osc-border);background:var(--osc-sidebar-bg);flex-shrink:0;display:flex;flex-direction:column;height:100%}.sidebar.collapsed{width:0;border-right:none}.hamburger-btn{background:none;border:none;border-radius:4px;padding:4px;font-size:14px;cursor:pointer;color:var(--osc-text-muted);transition:all .2s ease;width:28px;height:28px;display:flex;align-items:center;justify-content:center;line-height:1}.hamburger-btn:hover{background-color:var(--osc-hover);color:var(--osc-text-secondary)}.hamburger-btn:focus-visible{outline:2px solid var(--osc-primary-light);outline-offset:2px}.stat-label{font-weight:500;color:var(--osc-text-secondary)}.stat-value{font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:13px;color:var(--osc-primary);font-weight:600}.donate-container{line-height:1.6;text-align:center}.donate-container h3{margin:0 0 16px;color:var(--osc-heading);font-size:20px}.donate-container p{margin-bottom:20px;color:var(--osc-text-secondary);font-size:14px}.donate-qr-section{margin:12px 0;padding:12px;background-color:var(--osc-surface-subtle);border-radius:8px;border:1px solid var(--osc-border)}.donate-paypal-section{margin:12px 0;padding:12px;background-color:var(--osc-surface-subtle);border-radius:8px;border:1px solid var(--osc-border);display:flex;justify-content:center;align-items:center}.pp-WEWLDYK5WECK2{text-align:center;border:none;border-radius:.25rem;min-width:11.625rem;padding:0 2rem;height:2.625rem;font-weight:700;background-color:#ffd140;color:#000;font-family:Helvetica Neue,Arial,sans-serif;font-size:1rem;line-height:1.25rem;cursor:pointer}.paypal-form{display:flex;flex-direction:column;align-items:center;gap:.5rem}.paypal-support-text{font-size:.75rem}.paypal-support-text img{height:.875rem;vertical-align:middle}body.dark-theme .donate-paypal-section img{filter:brightness(.95)}.donate-qr-section h4{margin:0 0 15px;color:var(--osc-heading);font-size:16px}.donate-qr-code{width:320px;height:320px;border-radius:8px;border:2px solid var(--osc-border);margin:0 auto 15px;display:block}.donate-instruction{margin:0;color:var(--osc-text-muted-alt);font-size:13px}.donate-info{margin-top:12px;text-align:left}.donate-info h4{margin:0 0 12px;color:var(--osc-heading);font-size:16px}.donate-info ul{padding-left:20px;margin:0}.donate-info li{margin-bottom:6px;color:var(--osc-text-secondary);font-size:14px}.about-container{line-height:1.6}.about-container h3{margin:16px 0 8px;color:var(--osc-heading)}.about-container p{margin-bottom:12px;color:var(--osc-text-secondary)}.about-container ul{padding-left:20px;margin-bottom:16px}.about-container li{margin-bottom:4px;color:var(--osc-text-secondary)}@media(max-width:768px){.app-header{flex-direction:column;height:auto;padding:10px;gap:10px}.app-header h1{font-size:18px}.header-controls{flex-wrap:wrap;justify-content:center;gap:8px}.control-button{padding:6px 12px;font-size:13px;height:32px}}@media(max-width:480px){.app-header h1{font-size:16px}.header-controls{gap:6px}.control-button{padding:5px 10px;font-size:12px;height:28px}}.app-loading{display:flex;align-items:center;justify-content:center;height:100vh;background-color:var(--osc-loading-bg)}.app-loading:after{content:"";width:40px;height:40px;border:3px solid var(--osc-spinner-border);border-top:3px solid var(--osc-spinner-accent);border-radius:50%;animation:spin 1s linear infinite}.workspace-manager{display:flex;flex-direction:column;height:100%;padding:.75rem}.workspace-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.workspace-header h2{font-size:1rem;font-weight:600;color:var(--osc-text-secondary);text-transform:uppercase;letter-spacing:.5px}.workspace-item{display:flex;justify-content:space-between;align-items:center;padding:.5rem .75rem;cursor:pointer;transition:background-color .2s;border-bottom:1px solid var(--osc-border-subtle);font-size:.875rem}.workspace-item:last-child{border-bottom:none}.workspace-item:hover{background-color:var(--osc-hover)}.workspace-item.active{background-color:var(--osc-hover-blue);border-left:4px solid var(--osc-primary-light)}.workspace-item .load-btn{background:none;border:none;cursor:pointer;padding:4px 8px;font-size:14px;border-radius:4px;transition:background-color .2s}.workspace-item .load-btn:hover{background:var(--osc-hover-intense)}.workspace-item.clickable{cursor:pointer}.workspace-item.clickable:hover{background:var(--osc-hover)}.workspace-content{flex:1;overflow-y:auto}.workspace-info{margin-bottom:.75rem;padding:.5rem .75rem;background:var(--osc-surface-subtle);border-radius:.375rem}.workspace-info h3{font-size:.875rem;font-weight:500;color:var(--osc-text-secondary)}.workspace-stats{display:flex;gap:.75rem;font-size:.75rem;color:var(--osc-text-muted)}.workspace-section{margin-bottom:.75rem;border:1px solid var(--osc-border);border-radius:.375rem;overflow:hidden}.workspace-section .section-header{display:flex;justify-content:space-between;align-items:center;padding:.5rem .75rem;background:var(--osc-surface-subtle);border-bottom:1px solid var(--osc-border)}.workspace-section .section-header h4{font-size:.8125rem;font-weight:600;color:var(--osc-text-muted);text-transform:uppercase;letter-spacing:.5px;margin:0}.workspace-section .section-header .add-btn{background:none;border:1px solid var(--osc-border-light);border-radius:4px;padding:2px 8px;font-size:.75rem;cursor:pointer;color:var(--osc-text-secondary);transition:background-color .2s}.workspace-section .section-header .add-btn:hover{background:var(--osc-hover-intense)}.items-list{padding:.5rem}.item-name{flex:1;font-size:.875rem;color:var(--osc-text-secondary)}.delete-btn{background-color:var(--osc-danger);color:#fff;border:none;padding:.25rem .5rem;border-radius:.25rem;font-size:.75rem;cursor:pointer;transition:background-color .2s}.delete-btn:hover{background-color:var(--osc-danger-hover)}.no-items{padding:1.5rem;text-align:center;color:var(--osc-text-muted);font-style:italic}.app-error{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;padding:20px;text-align:center;background-color:var(--osc-danger-bg)}.app-error h2{color:var(--osc-danger-text);margin-bottom:12px}.app-error p{color:var(--osc-error-muted);margin-bottom:20px}.app-error button{padding:10px 20px;background-color:var(--osc-primary);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500;transition:background-color .2s}.app-error button:hover{background-color:var(--osc-primary-hover)}.error-boundary{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;padding:40px;text-align:center;background:var(--osc-surface-alt)}.error-boundary h2{color:var(--osc-danger-text);margin-bottom:16px}.error-boundary details{margin-bottom:20px;color:var(--osc-text-secondary);max-width:600px}.error-boundary button{padding:10px 20px;background:var(--osc-primary);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:14px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--osc-scrollbar-track)}::-webkit-scrollbar-thumb{background:var(--osc-scrollbar-thumb);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--osc-scrollbar-thumb-hover)}.feedback-container{line-height:1.6}.feedback-warning{background-color:var(--osc-warning-bg);border:1px solid var(--osc-warning-border);border-radius:4px;padding:10px;margin-bottom:15px;font-size:14px;color:var(--osc-warning-text-on-dark)}.feedback-warning strong{color:var(--osc-warning-text)}.feedback-warning p{margin:5px 0 0;font-size:13px}.feedback-form{display:flex;flex-direction:column;gap:15px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-weight:500;color:var(--osc-text-secondary);font-size:14px}.radio-group{display:flex;gap:20px;align-items:center}.radio-group label{display:flex;align-items:center;gap:6px;font-weight:400;cursor:pointer}.radio-group input[type=radio]{margin:0}.feedback-input{padding:8px 12px;border:1px solid var(--osc-input-border);border-radius:4px;font-size:14px;background-color:var(--osc-surface);color:var(--osc-text);transition:border-color .2s}.feedback-input:focus{outline:none;border-color:var(--osc-primary);box-shadow:0 0 0 2px var(--osc-primary-focus-ring)}.feedback-textarea{padding:8px 12px;border:1px solid var(--osc-input-border);border-radius:4px;font-size:14px;font-family:inherit;resize:vertical;min-height:80px;background-color:var(--osc-surface);color:var(--osc-text);transition:border-color .2s}.feedback-textarea:focus{outline:none;border-color:var(--osc-primary);box-shadow:0 0 0 2px var(--osc-primary-focus-ring)}.feedback-input:disabled{background-color:var(--osc-hover);color:var(--osc-text-muted);cursor:not-allowed}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.loading-spinner{width:50px;height:50px;border:4px solid rgba(255,255,255,.3);border-top:4px solid white;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:20px}.loading-container p{font-size:16px;font-weight:500;margin:0;opacity:.9}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}