:root{--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--bg-hover: #e2e8f0;--bg-active: #dbeafe;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--border-color: #e2e8f0;--accent: #0d9488;--accent-hover: #0f766e;--accent-light: #ccfbf1;--error-bg: #fef2f2;--error-text: #dc2626;--error-border: #fecaca;--shadow: 0 1px 3px rgba(0, 0, 0, .08);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .1);--header-height: 60px;--sidebar-width: 30%;--sidebar-max-width: 360px;--font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", sans-serif;--font-mono: "SF Mono", "Fira Code", "Fira Mono", Menlo, Consolas, monospace;--radius: 8px;--radius-sm: 4px}@media (prefers-color-scheme: dark){:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--bg-tertiary: #1e293b;--bg-hover: #334155;--bg-active: #1e3a5f;--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--border-color: #334155;--accent: #14b8a6;--accent-hover: #2dd4bf;--accent-light: #134e4a;--error-bg: #1c1212;--error-text: #f87171;--error-border: #7f1d1d;--shadow: 0 1px 3px rgba(0, 0, 0, .3);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .4)}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-stack);background:var(--bg-secondary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}.app{display:flex;flex-direction:column;height:100vh;overflow:hidden}.app-header{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:var(--header-height);background:var(--bg-primary);border-bottom:1px solid var(--border-color);flex-shrink:0;z-index:10}.app-header h1{font-size:18px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:8px}.app-header h1 .logo-icon{color:var(--accent);font-size:22px}.header-actions{display:flex;gap:12px;align-items:center}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;transition:background .15s ease,color .15s ease}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background:var(--bg-hover)}.btn:disabled{opacity:.5;cursor:not-allowed}.app-body{display:flex;flex:1;overflow:hidden}.sidebar{width:var(--sidebar-width);max-width:var(--sidebar-max-width);min-width:240px;background:var(--bg-primary);border-right:1px solid var(--border-color);overflow-y:auto;flex-shrink:0}.sidebar-section{padding:16px 20px;border-bottom:1px solid var(--border-color)}.sidebar-section h3{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:12px}.metadata-item{display:flex;flex-direction:column;gap:2px;margin-bottom:12px}.metadata-label{font-size:12px;color:var(--text-muted);font-weight:500}.metadata-value{font-size:14px;color:var(--text-primary);font-weight:400;word-break:break-word}.metadata-value.not-specified{color:var(--text-muted);font-style:italic}.section-nav{list-style:none}.section-nav-item{display:flex;align-items:center;padding:8px 12px;border-radius:var(--radius-sm);font-size:14px;color:var(--text-secondary);cursor:pointer;transition:background .15s,color .15s;margin-bottom:2px}.section-nav-item:hover{background:var(--bg-hover);color:var(--text-primary)}.section-nav-item.active{background:var(--accent-light);color:var(--accent-hover);font-weight:500}.viewer-panel{flex:1;display:flex;flex-direction:column;overflow:hidden;background:var(--bg-secondary)}.tab-bar{display:flex;gap:0;padding:0 20px;background:var(--bg-primary);border-bottom:1px solid var(--border-color);flex-shrink:0}.tab{padding:12px 20px;font-size:14px;font-weight:500;color:var(--text-secondary);border-bottom:2px solid transparent;transition:color .15s,border-color .15s;cursor:pointer}.tab:hover{color:var(--text-primary)}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.viewer-content{flex:1;overflow-y:auto;padding:24px 32px}.narrative-view{max-width:800px;margin:0 auto}.narrative-section{margin-bottom:40px;scroll-margin-top:20px}.narrative-section h2{font-size:20px;font-weight:600;color:var(--text-primary);margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--border-color)}.narrative-section p{font-size:15px;line-height:1.7;color:var(--text-secondary);margin-bottom:12px}.narrative-section table{width:100%;border-collapse:collapse;margin-bottom:16px;font-size:14px}.narrative-section th{text-align:left;padding:8px 12px;background:var(--bg-tertiary);font-weight:600;color:var(--text-primary);border:1px solid var(--border-color)}.narrative-section td{padding:8px 12px;border:1px solid var(--border-color);color:var(--text-secondary)}.narrative-section ul{list-style:disc;padding-left:24px;margin-bottom:12px}.narrative-section li{font-size:15px;line-height:1.7;color:var(--text-secondary);margin-bottom:6px}.xml-view{max-width:100%;overflow-x:auto}.xml-view pre{font-family:var(--font-mono);font-size:13px;line-height:1.5;background:var(--bg-primary);padding:16px 20px;border-radius:var(--radius);overflow-x:auto;border:1px solid var(--border-color)}.xml-view code{font-family:var(--font-mono)}.hljs{background:transparent!important;color:var(--text-primary)!important}.dark .hljs-tag .hljs-name{color:#60a5fa}.dark .hljs-attr{color:#c084fc}.dark .hljs-string{color:#4ade80}.upload-area{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;padding:48px;text-align:center}.upload-zone{border:2px dashed var(--border-color);border-radius:var(--radius);padding:48px 64px;cursor:pointer;transition:border-color .2s,background .2s;display:flex;flex-direction:column;align-items:center;gap:12px}.upload-zone:hover,.upload-zone.dragover{border-color:var(--accent);background:var(--accent-light)}.upload-icon{font-size:48px;color:var(--text-muted)}.upload-zone p{font-size:16px;color:var(--text-secondary)}.upload-zone .upload-hint{font-size:13px;color:var(--text-muted);margin-top:4px}.error-banner{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;padding:48px;text-align:center}.error-message{background:var(--error-bg);color:var(--error-text);border:1px solid var(--error-border);border-radius:var(--radius);padding:24px 32px;max-width:400px;font-size:15px;margin-bottom:20px}@media (max-width: 768px){.sidebar{position:absolute;top:var(--header-height);left:0;bottom:0;z-index:20;transform:translate(-100%);transition:transform .25s ease;box-shadow:var(--shadow-lg);width:80%;max-width:320px}.sidebar.open{transform:translate(0)}.sidebar-toggle{display:flex!important}.viewer-content{padding:16px}}.sidebar-toggle{display:none;align-items:center;justify-content:center;padding:8px;border-radius:var(--radius-sm);font-size:20px;color:var(--text-secondary)}.sidebar-toggle:hover{background:var(--bg-hover)}.connection-panel{margin-top:32px;padding:24px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow);max-width:560px;width:100%}.connection-title{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.connection-description{font-size:14px;color:var(--text-secondary);line-height:1.5;margin-bottom:20px}.connection-empty{padding:16px;background:var(--bg-secondary);border:1px dashed var(--border-color);border-radius:var(--radius-sm);text-align:left}.connection-empty h3{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.connection-empty p{font-size:13px;color:var(--text-secondary);line-height:1.5;margin-bottom:8px}.connection-empty .callback-url{display:block;font-family:var(--font-mono);font-size:12px;background:var(--bg-tertiary);color:var(--accent-hover);padding:8px 10px;border-radius:var(--radius-sm);margin:8px 0;word-break:break-all}.provider-list{display:flex;flex-direction:column;gap:10px}.provider-btn{justify-content:center;padding:12px 20px;font-size:15px}.connection-error,.picker-error{color:var(--error-text);background:var(--error-bg);border:1px solid var(--error-border);border-radius:var(--radius-sm);padding:12px 14px;font-size:14px;margin-top:12px}.callback-view{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;padding:48px;text-align:center;max-width:480px;margin:0 auto}.callback-title{font-size:22px;font-weight:600;color:var(--text-primary);margin-bottom:16px}.callback-status{font-size:15px;color:var(--text-secondary);line-height:1.6;margin-bottom:24px}.callback-error{font-size:15px;color:var(--error-text);background:var(--error-bg);border:1px solid var(--error-border);border-radius:var(--radius-sm);padding:16px;line-height:1.5;margin-bottom:24px;text-align:left;word-break:break-word}.document-picker{flex:1;display:flex;justify-content:center;padding:24px;overflow-y:auto}.picker-content{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;max-width:720px;padding:24px;height:fit-content}.picker-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.picker-title{font-size:20px;font-weight:600;color:var(--text-primary)}.picker-empty{padding:24px;text-align:center;color:var(--text-secondary);font-size:15px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm)}.candidate-list{list-style:none;display:flex;flex-direction:column;gap:12px}.candidate-item{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-sm);transition:border-color .15s ease}.candidate-item:hover{border-color:var(--accent)}.candidate-info{display:flex;flex-direction:column;gap:4px;min-width:0;flex:1}.candidate-title{font-size:15px;font-weight:600;color:var(--text-primary);word-break:break-word}.candidate-date,.candidate-author{font-size:13px;color:var(--text-muted)}.candidate-external{font-size:12px;color:var(--accent-hover);font-weight:500}.smart-provider-name{font-size:13px;font-weight:500;color:var(--text-secondary);padding:6px 10px;background:var(--accent-light);border-radius:var(--radius-sm);white-space:nowrap}@media (max-width: 768px){.connection-panel{max-width:100%;padding:20px 16px}.picker-content{padding:18px}.candidate-item{flex-direction:column;align-items:stretch;gap:10px}.smart-provider-name{display:none}}.sidebar::-webkit-scrollbar,.viewer-content::-webkit-scrollbar{width:6px}.sidebar::-webkit-scrollbar-track,.viewer-content::-webkit-scrollbar-track{background:transparent}.sidebar::-webkit-scrollbar-thumb,.viewer-content::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}.sidebar::-webkit-scrollbar-thumb:hover,.viewer-content::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}:root{--xml-tag: #075985;--xml-attr: #7c2d12;--xml-string: #166534;--xml-comment: #64748b}@media (prefers-color-scheme: dark){:root{--xml-tag: #7dd3fc;--xml-attr: #fdba74;--xml-string: #86efac;--xml-comment: #94a3b8}}.hljs-tag .hljs-name,.hljs-name{color:var(--xml-tag)!important}.hljs-attr{color:var(--xml-attr)!important}.hljs-string{color:var(--xml-string)!important}.hljs-comment,.hljs-meta{color:var(--xml-comment)!important}.upload-zone:focus-visible,.tab:focus-visible,.section-nav-item:focus-visible,.btn:focus-visible,.sidebar-toggle:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.upload-warning{position:absolute;top:calc(var(--header-height) + 12px);left:50%;transform:translate(-50%);z-index:11;max-width:min(90%,560px);padding:10px 14px;border:1px solid #f59e0b;border-radius:var(--radius-sm);background:#fffbeb;color:#92400e;box-shadow:var(--shadow);font-size:14px}@media (prefers-color-scheme: dark){.upload-warning{background:#451a03;color:#fde68a;border-color:#b45309}}