*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--brand: #00a27a;--brand-dark: #007d5f;--brand-light: #d6f0ea;--brand-gray: #696a6f;--surface: #ffffff;--surface-2: #f4f6f8;--border: #e1e4e8;--text: #1a1a2e;--text-muted: #696a6f;--success: #00a27a;--warning: #ff8c00;--radius: 8px;--radius-lg: 12px;--shadow: 0 1px 4px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);--shadow-lg: 0 8px 32px rgba(0,0,0,.14)}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--surface-2);color:var(--text);min-height:100vh;font-size:15px;line-height:1.5}.app-layout{display:flex;flex-direction:column;min-height:100vh}.app-header{background:#fff;color:var(--text);display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:64px;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px #00000014;border-bottom:3px solid var(--brand)}.header-left{display:flex;align-items:center;gap:12px}.header-icon{font-size:22px}.header-logo{height:36px;width:auto;display:block}.header-divider{width:1px;height:28px;background:var(--border)}.header-title{font-size:16px;font-weight:600;color:var(--brand-gray);letter-spacing:.3px}.header-right{display:flex;align-items:center;gap:12px}.user-name{font-size:14px;color:var(--brand-gray)}.app-main{flex:1}.btn-primary{background:var(--brand);color:#fff;border:none;border-radius:var(--radius);padding:10px 20px;font-size:14px;font-weight:600;cursor:pointer;transition:background .15s;white-space:nowrap}.btn-primary:hover:not(:disabled){background:var(--brand-dark)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-large{padding:14px 32px;font-size:16px;border-radius:var(--radius-lg)}.btn-ghost{background:transparent;color:var(--brand-gray);border:1px solid var(--border);border-radius:var(--radius);padding:6px 12px;font-size:13px;cursor:pointer;transition:background .15s,border-color .15s;text-decoration:none;display:inline-flex;align-items:center}.btn-ghost:hover{background:var(--brand-light);border-color:var(--brand);color:var(--brand)}.login-screen{display:flex;align-items:center;justify-content:center;min-height:calc(100vh - 56px);padding:24px}.login-card{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:48px 40px;text-align:center;max-width:420px;width:100%}.login-logo{height:48px;width:auto;margin-bottom:20px;display:block;margin-left:auto;margin-right:auto}.login-card h1{font-size:22px;font-weight:700;color:var(--brand-gray);margin-bottom:6px}.login-card>p{color:var(--text-muted);margin-bottom:8px}.login-sub{font-size:13px;margin-bottom:28px!important}.login-card .btn-large{width:100%;justify-content:center;margin-bottom:12px}.login-hint{font-size:12px;color:var(--text-muted)}.search-page{max-width:860px;margin:0 auto;padding:0 16px 40px}.search-hero{padding:32px 0 24px}.search-hero h2{font-size:22px;font-weight:600;margin-bottom:14px;color:var(--text)}.search-form{display:flex;gap:10px;align-items:center}.search-input-wrapper{flex:1;position:relative;display:flex;align-items:center}.search-icon{position:absolute;left:14px;font-size:16px;pointer-events:none}.search-input{width:100%;padding:12px 44px 12px 42px;border:2px solid var(--border);border-radius:var(--radius-lg);font-size:15px;outline:none;background:var(--surface);transition:border-color .15s}.search-input:focus{border-color:var(--brand)}.search-clear{position:absolute;right:12px;background:none;border:none;cursor:pointer;font-size:14px;color:var(--text-muted);padding:4px}.tabs{display:flex;gap:4px;margin-bottom:16px;border-bottom:2px solid var(--border);padding-bottom:0}.tab{background:none;border:none;padding:8px 16px;font-size:14px;font-weight:500;color:var(--text-muted);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;border-radius:var(--radius) var(--radius) 0 0;display:flex;align-items:center;gap:6px;transition:color .15s}.tab:hover{color:var(--brand)}.tab--active{color:var(--brand);border-bottom-color:var(--brand)}.tab-count{background:var(--surface-2);color:var(--text-muted);font-size:11px;font-weight:600;padding:1px 7px;border-radius:99px}.tab--active .tab-count{background:var(--brand-light);color:var(--brand)}.result-list{display:flex;flex-direction:column;gap:8px}.result-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;display:flex;align-items:flex-start;gap:14px;cursor:pointer;transition:border-color .15s,box-shadow .15s,transform .1s}.result-card:hover{border-color:var(--brand);box-shadow:var(--shadow);transform:translateY(-1px)}.result-icon{font-size:24px;flex-shrink:0;margin-top:2px}.result-body{flex:1;min-width:0}.result-title{font-size:15px;font-weight:600;margin-bottom:4px;word-break:break-word}.result-preview{font-size:13px;color:var(--text-muted);margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.result-preview em{font-style:normal;font-weight:600;color:var(--brand)}.result-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.result-badge{font-size:11px;font-weight:600;padding:2px 8px;border-radius:99px;text-transform:uppercase;letter-spacing:.4px}.result-badge--sharepoint,.result-badge--onedrive{background:#e8f4fd;color:#0078d4}.result-badge--onenote{background:#f0e8fd;color:#7719aa}.result-date{font-size:12px;color:var(--text-muted)}.result-breadcrumb{font-size:11px;color:var(--brand);font-weight:600;display:block;margin-bottom:2px}.result-hint{font-size:11px;color:var(--text-muted);font-style:italic}.result-arrow{font-size:22px;color:var(--text-muted);flex-shrink:0;align-self:center}.empty-state{text-align:center;padding:48px 24px;color:var(--text-muted)}.empty-state p+p{margin-top:8px;font-size:13px}.start-hint{padding:16px 0 0}.hint-label{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.6px;margin-bottom:10px}.hint-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}.hint-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px 16px;text-align:center}.hint-card--clickable{cursor:pointer;transition:border-color .15s,box-shadow .15s,transform .1s}.hint-card--clickable:hover{border-color:var(--brand);box-shadow:var(--shadow);transform:translateY(-2px)}.hint-card--clickable:hover strong{color:var(--brand)}.hint-card span{font-size:28px;display:block;margin-bottom:8px}.hint-card strong{font-size:14px;display:block;margin-bottom:4px;transition:color .15s}.hint-card p{font-size:12px;color:var(--text-muted)}.hint-grid{grid-template-columns:repeat(auto-fit,minmax(160px,1fr))}.ai-answer{background:linear-gradient(135deg,#f0fdf8,#e8f8f3);border:1px solid var(--brand);border-radius:var(--radius-lg);padding:16px 20px;margin-bottom:16px}.ai-answer-header{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14px;color:var(--brand-dark);margin-bottom:10px}.ai-icon{font-size:18px}.ai-loading{font-weight:400;color:var(--text-muted);font-size:13px}.ai-text{font-size:14px;line-height:1.7;color:var(--text)}.ai-markdown h1,.ai-markdown h2,.ai-markdown h3{font-size:14px;font-weight:700;color:var(--brand-dark);margin:12px 0 4px}.ai-markdown h1{font-size:15px}.ai-markdown p{margin:0 0 8px}.ai-markdown ul,.ai-markdown ol{padding-left:20px;margin:0 0 8px}.ai-markdown li{margin-bottom:2px}.ai-markdown strong{font-weight:700;color:var(--text)}.ai-markdown code{background:#00a27a1f;color:var(--brand-dark);padding:1px 5px;border-radius:4px;font-size:13px;font-family:Consolas,monospace}.ai-markdown pre{background:#00a27a14;border:1px solid var(--brand-light);border-radius:var(--radius);padding:10px 14px;overflow-x:auto;margin:8px 0}.ai-markdown pre code{background:none;padding:0;color:var(--text);font-size:13px}.ai-markdown hr{border:none;border-top:1px solid var(--brand-light);margin:10px 0}.ai-error{font-size:13px;color:var(--warning)}.ai-disclaimer{font-size:11px;color:var(--text-muted);margin-top:10px;padding-top:8px;border-top:1px solid var(--brand-light)}.ai-skeleton{display:flex;flex-direction:column;gap:8px}.ai-skeleton-line{height:14px;background:linear-gradient(90deg,#d0ede5 25%,#e8f8f3,#d0ede5 75%);background-size:200% 100%;border-radius:4px;animation:shimmer 1.5s infinite}.ai-skeleton-line--short{width:60%}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.error-banner{background:#fff3cd;border:1px solid #ffc107;border-radius:var(--radius);padding:12px 16px;margin-bottom:16px;font-size:14px}.viewer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:1000;display:flex;align-items:stretch;justify-content:flex-end}.viewer-panel{background:var(--surface);width:min(860px,100vw);display:flex;flex-direction:column;box-shadow:var(--shadow-lg)}.viewer-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;border-bottom:1px solid var(--border);background:var(--surface-2);gap:12px;flex-wrap:wrap}.viewer-title{display:flex;align-items:center;gap:8px;font-weight:600;font-size:15px;flex:1;min-width:0;word-break:break-word}.viewer-actions{display:flex;gap:8px;align-items:center}.viewer-actions .btn-ghost{color:var(--text);border-color:var(--border)}.viewer-content{flex:1;overflow:hidden}.viewer-iframe{width:100%;height:100%;border:none}.viewer-external{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:20px;padding:40px;color:var(--text-muted);text-align:center}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:calc(100vh - 56px);gap:16px;color:var(--text-muted)}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--brand);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.app-footer{text-align:center;padding:16px;font-size:12px;color:var(--text-muted);border-top:1px solid var(--border);background:var(--surface)}@media (max-width: 600px){.search-form{flex-direction:column}.search-form .btn-primary{width:100%}.app-header{padding:0 16px}.login-card{padding:32px 24px}.viewer-panel{width:100vw}}