@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";.app-root{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden;background-color:var(--bg-primary);color:var(--text-primary);transition:background-color var(--transition-speed),color var(--transition-speed)}.app-container{display:flex;flex:1;overflow:hidden;width:100%;position:relative;isolation:isolate}.sidebar{width:260px;min-width:260px;max-width:260px;background-color:var(--sidebar-bg);color:var(--sidebar-text);display:flex;flex-direction:column;border-right:1px solid var(--sidebar-border);flex-shrink:0;transition:background-color var(--transition-speed);position:relative;z-index:100}.sidebar-header{padding:1rem}.upload-btn{display:flex;justify-content:center;align-items:center;width:100%;padding:.75rem;background:transparent;color:var(--sidebar-text);border:1px solid var(--sidebar-border);border-radius:6px;font-size:.9rem;cursor:pointer;transition:all .2s;gap:8px}.upload-btn:hover{background-color:var(--sidebar-hover)}.upload-btn.uploading{opacity:.7;cursor:wait}.sections{flex:1;overflow-y:auto;padding:.5rem}.doc-item{display:flex;align-items:center;padding:.75rem .8rem;margin-bottom:2px;border-radius:6px;cursor:pointer;font-size:.9rem;color:var(--sidebar-text);transition:all .2s cubic-bezier(.4,0,.2,1);gap:12px;position:relative;overflow:hidden;border:1px solid transparent}.doc-item:hover{background-color:#ffffff14;transform:translate(2px);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.doc-item.active{background:linear-gradient(90deg,#3b82f626,#3b82f60d);border-left:3px solid #3b82f6;border-radius:4px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 4px 12px #0000001a}[data-theme=light] .doc-item.active{background:linear-gradient(90deg,#3b82f61a,#ffffff80);border-color:#3b82f6}.doc-icon{font-size:1.1rem;opacity:.7;display:flex;align-items:center;justify-content:center;transition:opacity .2s}.doc-item:hover .doc-icon{opacity:1;color:#3b82f6;text-shadow:0 0 10px rgba(59,130,246,.5)}.doc-info{flex:1;overflow:hidden;display:flex;flex-direction:column;justify-content:center}.doc-name{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:500;line-height:1.2;margin-bottom:2px}.doc-meta{font-size:.7rem;color:var(--sidebar-muted);display:flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums}.doc-expanded-area{background:#0003;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:0 0 8px 8px;margin-bottom:8px;max-height:400px;overflow-y:auto;border-top:none;animation:slideDown .3s ease-out;box-shadow:inset 0 2px 4px #0000001a}.navbar-filters{display:flex;gap:.75rem;padding:.35rem;background:#ffffff0d;border-radius:12px;border:1px solid rgba(255,255,255,.1);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}.filter-btn{background:transparent;border:1px solid transparent;color:var(--sidebar-muted);padding:.4rem 1rem;font-size:.85rem;font-weight:600;cursor:pointer;border-radius:8px;transition:all .3s cubic-bezier(.25,.8,.25,1);font-family:Inter,sans-serif;letter-spacing:.02em}.filter-btn:hover{color:var(--text-primary);background:#ffffff1a}.filter-btn.active{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;box-shadow:0 2px 10px #3b82f64d;border:1px solid rgba(255,255,255,.1);transform:translateY(-1px)}.status-dot{width:6px;height:6px;border-radius:50%;display:inline-block}.status-dot.completed{background-color:#10b981;box-shadow:0 0 4px #10b98166}.status-dot.processing{background-color:#f59e0b;animation:pulse 1.5s infinite}@keyframes pulse{0%{opacity:.5}50%{opacity:1}to{opacity:.5}}.main-content{flex:1;background-color:var(--bg-primary);overflow-y:auto;position:relative}.top-navbar{height:60px;background-color:var(--sidebar-bg);border-bottom:1px solid var(--sidebar-border);display:flex;align-items:center;padding:0 1.5rem;justify-content:space-between;color:var(--sidebar-text)}.navbar-brand{font-weight:700;font-size:1.1rem;color:var(--sidebar-text)}.doc-search-input{width:100%;padding:8px 12px;border-radius:6px;border:1px solid var(--sidebar-border);background-color:#0003;color:var(--sidebar-text);font-size:.9rem}[data-theme=light] .doc-search-input{background-color:#fff;border-color:#cbd5e1}.sidebar-search-container{padding:0 1rem .75rem}.doc-group-header{padding:10px 1rem;margin-top:8px;margin-bottom:2px;color:var(--sidebar-muted);font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;cursor:pointer;display:flex;justify-content:space-between;align-items:center;border-radius:4px;transition:all .2s ease;-webkit-user-select:none;user-select:none}.doc-group-header:hover{background-color:#ffffff08;color:var(--sidebar-text)}.doc-group-header span{display:flex;align-items:center;gap:8px}.doc-group-arrow{transition:transform .3s cubic-bezier(.4,0,.2,1);opacity:.7}@keyframes slideDown{0%{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}.theme-toggle-btn{background:transparent;border:1px solid var(--sidebar-border);color:var(--sidebar-text);width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;font-size:1.2rem}.theme-toggle-btn:hover{background-color:var(--sidebar-hover)}.article-reader{max-width:800px;margin:0 auto;padding:3rem 2rem;color:var(--text-primary)}.reader-header h1{font-size:2.2rem;font-weight:700;margin-bottom:.5rem;line-height:1.2}.reader-body{font-size:1.1rem;line-height:1.8;color:var(--text-secondary)}.welcome-container{height:100%;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;background:radial-gradient(at 0% 0%,rgba(59,130,246,.15) 0px,transparent 50%),radial-gradient(at 100% 100%,rgba(139,92,246,.15) 0px,transparent 50%),var(--bg-primary);padding:2rem}[data-theme=light] .welcome-container{background:radial-gradient(at 0% 0%,rgba(219,234,254,1) 0px,transparent 50%),radial-gradient(at 100% 100%,rgba(237,233,254,1) 0px,transparent 50%),#fff}.welcome-card{background:#ffffff08;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.08);padding:3rem;border-radius:20px;max-width:500px;box-shadow:0 25px 50px -12px #00000040;animation:fadeIn .8s cubic-bezier(.2,.8,.2,1)}[data-theme=light] .welcome-card{background:#ffffffb3;border:1px solid rgba(255,255,255,.5);box-shadow:0 20px 25px -5px #0000001a,0 8px 10px -6px #0000001a}.welcome-title{font-size:2.5rem;font-weight:800;margin-bottom:1rem;background:linear-gradient(135deg,var(--text-primary) 0%,var(--primary-color) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.welcome-subtitle{font-size:1.1rem;color:var(--sidebar-muted);line-height:1.6}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.processing-status{background-color:#ffffff0d;padding:8px;border-radius:4px;margin-top:5px;border:1px solid var(--sidebar-border)}.processing-bar-bg{width:100%;height:4px;background-color:#ffffff1a;border-radius:2px;overflow:hidden}.processing-bar-fill{height:100%;background-color:#10b981;transition:width .5s ease}.badge{font-size:.75rem;padding:2px 8px;border-radius:12px;font-weight:600}.badge-blue{background:#dbeafe;color:#1e40af}.badge-green{background:#dcfce7;color:#166534}.badge-yellow{background:#fef9c3;color:#854d0e}.badge-gray{background:#f1f5f9;color:#475569}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}.glassy-text{background:linear-gradient(135deg,#fff,#cbd5e1);-webkit-background-clip:text;-webkit-text-fill-color:transparent;display:inline-block;text-shadow:0 2px 10px rgba(255,255,255,.1)}[data-theme=light] .glassy-text{background:linear-gradient(135deg,#0f172a,#334155);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.glassy-btn{background:#ffffff0d;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.1);color:var(--text-primary);padding:.6rem 1.2rem;border-radius:8px;cursor:pointer;transition:all .3s ease;font-weight:600;display:inline-flex;align-items:center;gap:8px;text-decoration:none}.glassy-btn:hover{background:#ffffff1a;transform:translateY(-2px);box-shadow:0 4px 12px #0000001a;border-color:var(--primary-color)}[data-theme=light] .glassy-btn{background:#fffc;border:1px solid rgba(0,0,0,.1);color:#1e293b}[data-theme=light] .glassy-btn:hover{background:#fff;border-color:#3b82f6}::-webkit-scrollbar-thumb{background:#9ca3af80;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#9ca3afcc}:root{--font-family: "Inter", system-ui, Avenir, Helvetica, Arial, sans-serif;--primary-color: #3c83f6;--transition-speed: .2s;--sidebar-bg: #1b1b1b;--sidebar-text: #e2e8f0;--sidebar-hover: #2a2a2a;--sidebar-active: #3c83f6;--sidebar-border: rgba(255, 255, 255, .08);--sidebar-muted: #c5c1b9;--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--text-primary: #0f172a;--text-secondary: #475569;--border-color: #e2e8f0;--glass-bg: rgba(27, 27, 27, .95);--glass-border: rgba(255, 255, 255, .1);--reader-card-bg: #f8f9fa;--reader-card-border: #e2e8f0;--reader-input-bg: #f3f4f6;--reader-input-text: #0f172a;--reader-notes-bg: #fffbeb;--accent-mains: #16a249;--accent-prelims: #e92063;--accent-blue: #3c83f6;--hl-issue-bg: #fee2e2;--hl-issue-text: #991b1b;--hl-solution-bg: #dcfce7;--hl-solution-text: #166534;--hl-impact-bg: #e0f2fe;--hl-impact-text: #075985;--hl-pyq-bg: #f3e8ff;--hl-pyq-text: #6b21a8;font-family:var(--font-family);line-height:1.5;font-weight:400;color-scheme:light;color:var(--text-primary);background-color:var(--bg-primary);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}[data-theme=light]{--sidebar-bg: #f0f4f8;--sidebar-text: #1e293b;--sidebar-hover: #e2e8f0;--sidebar-active: #3b82f6;--sidebar-border: #cbd5e1;--sidebar-muted: #64748b;--bg-primary: #ffffff;--text-primary: #0f172a;--text-secondary: #475569;--border-color: #e2e8f0;--reader-card-bg: #ffffff;--reader-card-border: #e2e8f0;--reader-input-bg: #f8fafc;--reader-input-text: #0f172a;--reader-notes-bg: #fffbeb;--hl-issue-bg: #fee2e2;--hl-issue-text: #991b1b;--hl-solution-bg: #dcfce7;--hl-solution-text: #166534;--hl-impact-bg: #e0f2fe;--hl-impact-text: #075985;--hl-pyq-bg: #f3e8ff;--hl-pyq-text: #6b21a8}body{margin:0;padding:0;display:flex;place-items:center;min-width:320px;min-height:100vh;background-color:var(--bg-primary);color:var(--text-primary)}.markdown-content{font-family:Inter,system-ui,sans-serif;line-height:1.7;color:inherit;font-size:15px}.markdown-content h1,.markdown-content h2,.markdown-content h3,.markdown-content h4{margin-top:1.5em;margin-bottom:.75em;font-weight:600;line-height:1.3;color:inherit}.markdown-content h2{font-size:1.25em;border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:.3em}[data-theme=light] .markdown-content h2{border-bottom:1px solid #e2e8f0}.markdown-content h3{font-size:1.1em}.markdown-content p{margin-bottom:1em}.markdown-content ul,.markdown-content ol{padding-left:1.5em;margin-bottom:1em}.markdown-content li{margin-bottom:.5em}.markdown-content strong{font-weight:600;color:inherit}.markdown-content pre{background:#0000004d;padding:1em;border-radius:8px;overflow-x:auto;white-space:pre-wrap;word-wrap:break-word;margin-bottom:1em}[data-theme=light] .markdown-content pre{background:#f1f5f9;border:1px solid #e2e8f0}.markdown-content code{font-family:Menlo,Monaco,Courier New,monospace;font-size:.85em;background:#64748b33;padding:.2em .4em;border-radius:4px}.markdown-content pre code{background:transparent;padding:0;color:inherit}.markdown-content>*:first-child{margin-top:0}.markdown-content>*:last-child{margin-bottom:0}