:root{--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-display: "Outfit", "Plus Jakarta Sans", var(--font-sans);--bg-app: #0b0f19;--bg-sidebar: #0f172a;--bg-card: #131c2e;--bg-card-hover: #182236;--bg-card-muted: #0e1626;--border-color: #1e293b;--border-color-light: #2e3d54;--primary: #e11d48;--primary-hover: #be123c;--primary-light: rgba(225, 29, 72, .12);--primary-border: rgba(225, 29, 72, .3);--success: #10b981;--success-light: rgba(16, 185, 129, .12);--warning: #f59e0b;--warning-light: rgba(245, 158, 11, .12);--error: #ef4444;--error-light: rgba(239, 68, 68, .12);--info: #0284c7;--info-light: rgba(2, 132, 199, .12);--text-main: #f8fafc;--text-muted: #94a3b8;--text-dim: #64748b;--text-inverse: #0f172a;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-full: 9999px;--header-height: 64px;--bottom-nav-height: 60px;--sidebar-width: 270px;--transition-fast: .15s ease;--transition-normal: .2s cubic-bezier(.4, 0, .2, 1);--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .25);--shadow-md: 0 4px 12px -1px rgba(0, 0, 0, .35);--shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, .45)}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}html,body{height:100%;width:100%;background-color:var(--bg-app);color:var(--text-main);font-family:var(--font-sans);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow:hidden}#root{height:100%;width:100%;display:flex}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:600;letter-spacing:-.015em;color:var(--text-main)}.app-container{display:flex;height:100vh;width:100vw;background-color:var(--bg-app);position:relative;overflow:hidden}.sidebar{width:var(--sidebar-width);background-color:var(--bg-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column;height:100%;flex-shrink:0;z-index:40;transition:transform var(--transition-normal)}.sidebar-header{padding:20px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border-color);height:var(--header-height)}.sidebar-logo-icon{width:36px;height:36px;border-radius:var(--radius-md);background-color:var(--primary);display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0}.sidebar-title-container{display:flex;flex-direction:column;overflow:hidden}.sidebar-title{font-size:15px;font-weight:700;color:var(--text-main);letter-spacing:-.01em}.sidebar-subtitle{font-size:11px;color:var(--text-muted);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-nav{padding:16px 12px;flex-grow:1;overflow-y:auto;display:flex;flex-direction:column;gap:4px}.sidebar-nav-item{display:flex;align-items:center;gap:12px;padding:10px 14px;color:var(--text-muted);text-decoration:none;font-size:13.5px;font-weight:500;border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition-fast);border:1px solid transparent;-webkit-user-select:none;user-select:none}.sidebar-nav-item:hover{background-color:#ffffff0a;color:var(--text-main)}.sidebar-nav-item.active{background-color:var(--primary-light);color:#fb7185;border-color:var(--primary-border);font-weight:600}.sidebar-nav-item.active svg{color:var(--primary)}.sidebar-footer{padding:16px;border-top:1px solid var(--border-color);background-color:var(--bg-card-muted)}.api-status-pill{display:flex;align-items:center;gap:8px;font-size:12px;padding:8px 12px;border-radius:var(--radius-sm);background-color:var(--bg-card);border:1px solid var(--border-color)}.status-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.status-dot.active{background-color:var(--success)}.status-dot.inactive{background-color:var(--error)}.sidebar-backdrop{display:none;position:fixed;top:0;left:0;right:0;bottom:0;background-color:#0009;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);z-index:35}.main-viewport{flex-grow:1;display:flex;flex-direction:column;height:100%;min-width:0;overflow:hidden;background-color:var(--bg-app)}.main-header{height:var(--header-height);border-bottom:1px solid var(--border-color);padding:0 24px;display:flex;align-items:center;justify-content:space-between;background-color:var(--bg-sidebar);flex-shrink:0;z-index:10;gap:16px}.header-left{display:flex;align-items:center;gap:12px;min-width:0}.mobile-menu-btn{display:none;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--radius-sm);background-color:var(--bg-card);border:1px solid var(--border-color);color:var(--text-main);cursor:pointer;flex-shrink:0}.mobile-menu-btn:hover{background-color:var(--bg-card-hover)}.header-title{font-size:17px;font-weight:600;display:flex;align-items:center;gap:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.header-meta{display:flex;align-items:center;gap:12px;flex-shrink:0}.header-user-badge{display:flex;align-items:center;gap:6px;font-size:12.5px;color:var(--text-muted);background-color:var(--bg-card);border:1px solid var(--border-color);padding:5px 12px;border-radius:var(--radius-sm);white-space:nowrap}.header-user-badge strong{color:var(--text-main);font-weight:600}.mobile-bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;height:var(--bottom-nav-height);background-color:var(--bg-sidebar);border-top:1px solid var(--border-color);z-index:30;grid-template-columns:repeat(4,1fr);padding:0 4px}.mobile-nav-tab{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--text-dim);text-decoration:none;font-size:10px;font-weight:500;cursor:pointer;border-top:2px solid transparent;transition:var(--transition-fast);padding:6px 0;position:relative}.mobile-nav-tab.active{color:#fb7185;border-top-color:var(--primary);background-color:var(--primary-light)}.mobile-nav-tab.active svg{color:var(--primary)}.mobile-nav-badge{position:absolute;top:4px;right:22%;width:7px;height:7px;border-radius:50%;background-color:var(--primary)}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#2e3d54;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#475569}.content-area{flex-grow:1;overflow-y:auto;padding:24px;min-height:0}.view-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);margin-bottom:20px}.card-title{font-size:17px;margin-bottom:6px;display:flex;align-items:center;gap:10px;font-weight:600}.card-subtitle{font-size:13px;color:var(--text-muted);margin-bottom:20px;line-height:1.45}.form-group{margin-bottom:16px}.form-label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}.form-input,.form-select,.form-textarea{width:100%;background-color:var(--bg-app);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:10px 14px;color:var(--text-main);font-family:var(--font-sans);font-size:13.5px;outline:none;transition:var(--transition-fast);min-height:40px}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);background-color:#0d1422}.form-input::placeholder,.form-textarea::placeholder{color:#475569}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:9px 16px;font-size:13px;font-weight:600;border-radius:var(--radius-sm);cursor:pointer;border:1px solid transparent;transition:var(--transition-fast);font-family:var(--font-sans);white-space:nowrap;-webkit-user-select:none;user-select:none;min-height:38px}.btn-primary{background-color:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);border-color:var(--primary-hover)}.btn-primary:active:not(:disabled){transform:translateY(1px)}.btn-secondary{background-color:var(--bg-card);border-color:var(--border-color);color:var(--text-main)}.btn-secondary:hover:not(:disabled){background-color:var(--bg-card-hover);border-color:var(--border-color-light)}.btn-secondary:active:not(:disabled){transform:translateY(1px)}.btn-success{background-color:var(--success);color:#fff}.btn-success:hover:not(:disabled){background-color:#059669}.btn-excel{background-color:#047857;border-color:#065f46;color:#fff}.btn-excel:hover:not(:disabled){background-color:#065f46}.btn-powerpoint{background-color:#0369a1;border-color:#075985;color:#fff}.btn-powerpoint:hover:not(:disabled){background-color:#075985}.btn:disabled{opacity:.45;cursor:not-allowed;transform:none!important}.theme-badge{display:inline-flex;align-items:center;gap:4px;background-color:var(--primary-light);color:#fb7185;border:1px solid var(--primary-border);font-size:11px;font-weight:600;padding:2px 8px;border-radius:var(--radius-sm)}.badge-success{background-color:var(--success-light);color:#34d399;border:1px solid rgba(16,185,129,.3)}.badge-warning{background-color:var(--warning-light);color:#fbbf24;border:1px solid rgba(245,158,11,.3)}.badge-muted{background-color:#ffffff0d;color:var(--text-muted);border:1px solid var(--border-color)}.upload-dropzone{border:2px dashed var(--border-color-light);border-radius:var(--radius-md);padding:36px 20px;text-align:center;cursor:pointer;transition:var(--transition-fast);background-color:var(--bg-card-muted);display:flex;flex-direction:column;align-items:center;gap:8px}.upload-dropzone:hover{border-color:var(--primary);background-color:#e11d4808}.pdf-list{display:flex;flex-direction:column;gap:10px;margin-top:18px}.pdf-item{background-color:var(--bg-card-muted);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:14px;transition:border-color var(--transition-fast)}.pdf-item:hover{border-color:var(--border-color-light)}.pdf-info{display:flex;align-items:center;gap:12px;overflow:hidden;min-width:0}.pdf-name{font-size:13.5px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.pdf-meta{font-size:11.5px;color:var(--text-muted);margin-top:2px}.pdf-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}.progress-container{width:100%;background-color:#1e293b;border-radius:var(--radius-full);height:6px;overflow:hidden;margin-top:8px}.progress-bar{height:100%;background-color:var(--primary);border-radius:var(--radius-full);transition:width .25s ease}.workspace-container{display:flex;flex-direction:column;flex:1;min-height:0;height:calc(100vh - var(--header-height));overflow:hidden}.workspace-layout{display:grid;grid-template-columns:360px 1fr;height:100%;overflow:hidden;min-height:0}.workspace-left{background-color:var(--bg-sidebar);border-right:1px solid var(--border-color);padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:16px}.workspace-right{display:flex;flex-direction:column;overflow-y:auto;padding:24px;background-color:var(--bg-app);min-width:0}.mobile-workspace-toggle{display:none;background-color:var(--bg-sidebar);padding:8px 12px;border-bottom:1px solid var(--border-color);gap:8px}.mobile-segment-btn{flex:1;padding:8px 12px;font-size:12.5px;font-weight:600;border-radius:var(--radius-sm);background-color:transparent;border:1px solid transparent;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px}.mobile-segment-btn.active{background-color:var(--bg-card);border-color:var(--border-color);color:var(--text-main)}.alert-banner{padding:12px 16px;border-radius:var(--radius-sm);margin-bottom:16px;font-size:13px;display:flex;align-items:flex-start;gap:10px;line-height:1.45}.alert-banner.info{background-color:var(--info-light);border:1px solid rgba(2,132,199,.3);color:#7dd3fc}.alert-banner.warning{background-color:var(--warning-light);border:1px solid rgba(245,158,11,.3);color:#fde047}.toggle-switch{position:relative;display:inline-block;width:38px;height:20px;flex-shrink:0}.toggle-switch input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#1e293b;transition:.2s;border-radius:34px;border:1px solid var(--border-color)}.toggle-slider:before{position:absolute;content:"";height:14px;width:14px;left:2px;bottom:2px;background-color:var(--text-muted);transition:.2s;border-radius:50%}input:checked+.toggle-slider{background-color:var(--primary);border-color:var(--primary)}input:checked+.toggle-slider:before{transform:translate(18px);background-color:#fff}.streaming-text{display:inline-block;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 900px){.sidebar{position:fixed;top:0;left:0;bottom:0;transform:translate(-100%);box-shadow:var(--shadow-lg);z-index:50}.sidebar.open{transform:translate(0)}.sidebar-backdrop.open{display:block}.mobile-menu-btn{display:flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:var(--radius-sm);color:var(--text-main)}.main-header{padding:0 14px}.header-title span:last-child{font-size:14.5px}.mobile-workspace-toggle{display:flex;position:sticky;top:0;z-index:20;background-color:var(--bg-sidebar);padding:8px 12px;border-bottom:1px solid var(--border-color);box-shadow:0 2px 8px #0003}.workspace-layout{display:flex;flex-direction:column;height:100%;overflow:hidden}.workspace-left{width:100%;border-right:none;border-bottom:1px solid var(--border-color);padding:16px;flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.workspace-right{width:100%;padding:16px;flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.mobile-hidden{display:none!important}.mobile-bottom-nav{display:grid;grid-template-columns:repeat(5,1fr);height:var(--bottom-nav-height);background-color:var(--bg-sidebar);border-top:1px solid var(--border-color);position:fixed;bottom:0;left:0;right:0;z-index:30;padding-bottom:env(safe-area-inset-bottom,0px)}.mobile-nav-tab{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--text-muted);font-size:10.5px;font-weight:500;cursor:pointer;position:relative;transition:var(--transition-fast)}.mobile-nav-tab.active{color:#fb7185;font-weight:600}.mobile-nav-tab.active svg{color:var(--primary)}.mobile-nav-badge{position:absolute;top:6px;right:calc(50% - 14px);width:7px;height:7px;border-radius:50%;background-color:var(--primary)}.workspace-container{height:calc(100vh - var(--header-height) - var(--bottom-nav-height));height:calc(100dvh - var(--header-height) - var(--bottom-nav-height));overflow:hidden}.content-area{padding:16px;padding-bottom:calc(var(--bottom-nav-height) + 20px);height:calc(100vh - var(--header-height));height:calc(100dvh - var(--header-height));overflow-y:auto;-webkit-overflow-scrolling:touch}.sidebar-footer{margin-bottom:0}}@media (max-width: 640px){:root{--header-height: 54px;--bottom-nav-height: 58px}.main-header{padding:0 10px;height:var(--header-height)}.header-user-badge{display:none}.header-title{font-size:13.5px;gap:6px}.header-title svg{width:16px;height:16px}.view-card{padding:14px;border-radius:var(--radius-md);margin-bottom:12px}.form-row{grid-template-columns:1fr;gap:8px}.form-group{margin-bottom:12px}.form-input,.form-select,.form-textarea{font-size:15px;padding:10px 12px;border-radius:var(--radius-sm)}.admin-docs-grid{grid-template-columns:1fr!important;gap:10px!important}.chapter-actions-bar{display:grid!important;grid-template-columns:repeat(2,1fr)!important;gap:6px!important;width:100%!important}.chapter-actions-bar .btn:first-child{grid-column:1 / -1!important}.chapter-actions-bar .btn{width:100%!important;padding:8px 6px!important;font-size:11px!important;justify-content:center!important;text-align:center!important}.pdf-item{flex-direction:column;align-items:stretch;padding:12px;gap:10px}.pdf-actions{justify-content:space-between;width:100%;border-top:1px solid rgba(255,255,255,.05);padding-top:8px}.upload-dropzone{padding:24px 14px}}@media (max-width: 420px){.mobile-segment-btn{font-size:11.5px;padding:6px 8px}.mobile-nav-tab span{font-size:9.5px}.chapter-actions-bar .btn{font-size:10.5px!important;padding:7px 4px!important}}