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.error-actions .retry-button:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.error-display .error-content .error-actions .retry-button:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}.error-display .error-content .error-actions .retry-button{background:var(--primary-color);color:#fff;padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-lg);border:none}.error-display .error-content .error-actions .retry-button:hover{background:var(--primary-hover)}.error-display .error-content .error-actions .dismiss-button{cursor:pointer;transition:var(--transition-normal);-webkit-user-select:none;user-select:none;white-space:nowrap;border:none;outline:none;justify-content:center;align-items:center;font-family:inherit;font-weight:500;text-decoration:none;display:inline-flex}.error-display .error-content .error-actions .dismiss-button:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.error-display .error-content .error-actions .dismiss-button:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}.error-display .error-content .error-actions .dismiss-button{color:var(--text-secondary);border:1px solid var(--border-color);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-lg);background:0 0;min-width:auto}.error-display .error-content .error-actions .dismiss-button:hover{background:var(--bg-hover);color:var(--text-primary)}.error-message{align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);background:rgba(var(--danger-rgb), .1);border:1px solid rgba(var(--danger-rgb), .3);border-radius:var(--radius-md);font-size:var(--font-size-sm);display:flex}.error-message .error-icon{color:var(--danger-color)}.error-message button{color:var(--text-secondary);cursor:pointer;font-size:var(--font-size-lg);background:0 0;border:none;margin-left:auto}.error-message button:hover{color:var(--danger-color)}@media (width>=640px){.container{padding:0 var(--spacing-xl)}}@media (width<=639px){.hidden-mobile{display:none}}@media (width>=640px){.hidden-desktop{display:none}}@media print{*{color:#000!important;box-shadow:none!important;text-shadow:none!important;background:0 0!important}a,a:visited{text-decoration:underline}.no-print{display:none!important}}.loading-state,.error-state{justify-content:center;align-items:center;min-height:200px;display:flex}.loading-state.full-height,.error-state.full-height{height:100vh}.loading-state.full-container,.error-state.full-container{height:100%}.session-loading-state,.session-error-state{background:var(--bg-primary);height:100vh}.session-loading-state .container,.session-error-state .container{max-width:800px;height:100%;padding:var(--spacing-xl);justify-content:center;align-items:center;margin:0 auto;display:flex}.chat-page .loading-state,.chat-page .error-state{height:100%}.chat-page .loading-state .container,.chat-page .error-state .container{max-width:800px;padding:var(--spacing-xl);margin:0 auto}@media (width>=640px){.container{padding:0 var(--spacing-xl)}}@media (width<=639px){.hidden-mobile{display:none}}@media (width>=640px){.hidden-desktop{display:none}}@media print{*{color:#000!important;box-shadow:none!important;text-shadow:none!important;background:0 0!important}a,a:visited{text-decoration:underline}.no-print{display:none!important}}.theme-toggle{cursor:pointer;transition:var(--transition-normal);-webkit-user-select:none;user-select:none;white-space:nowrap;border:none;outline:none;justify-content:center;align-items:center;font-family:inherit;font-weight:500;text-decoration:none;display:inline-flex}.theme-toggle:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.theme-toggle{cursor:pointer;border-radius:var(--radius-full);width:52px;height:28px;transition:transform var(--transition-fast);background:0 0;border:none;padding:0;position:relative}.theme-toggle:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}.theme-toggle .toggle-track{background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-full);width:100%;height:100%;transition:background-color var(--transition-normal), border-color var(--transition-normal);position:relative}.theme-toggle .toggle-thumb{background:var(--bg-primary);border:1px solid var(--border-hover);width:22px;height:22px;transition:transform var(--transition-normal), background-color var(--transition-normal), border-color var(--transition-normal);color:var(--text-secondary);border-radius:50%;justify-content:center;align-items:center;display:flex;position:absolute;top:2px;left:2px}[data-theme=dark] .theme-toggle .toggle-thumb{color:var(--text-primary);transform:translate(24px)}.theme-toggle:hover{transform:none}.theme-toggle:active{transform:scale(.95)}@media (width>=640px){.container{padding:0 var(--spacing-xl)}}@media (width<=639px){.hidden-mobile{display:none}}@media (width>=640px){.hidden-desktop{display:none}}@media print{*{color:#000!important;box-shadow:none!important;text-shadow:none!important;background:0 0!important}a,a:visited{text-decoration:underline}.no-print{display:none!important}}.auth-page{background:var(--bg-secondary);flex-direction:column;min-height:100vh;display:flex}.auth-header{border-bottom:1px solid var(--border-color);background:var(--bg-primary);justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;display:flex}@media (width>=1024px){.auth-header{padding:1.25rem 3rem}}.auth-header .brand{align-items:center;gap:.625rem;display:flex}.auth-header .brand .brand-mark{border-radius:var(--radius-lg);background:var(--primary-color);width:32px;height:32px;color:var(--text-inverse);justify-content:center;align-items:center;display:flex}.auth-header .brand .brand-name{letter-spacing:-.01em;color:var(--text-primary);font-size:1.125rem;font-weight:700}.auth-main{flex:1;justify-content:center;align-items:center;padding:2rem 1.5rem;display:flex}.auth-content{text-align:center;width:100%;max-width:420px}.auth-content h1{letter-spacing:-.02em;color:var(--text-primary);margin-bottom:.75rem;font-size:clamp(1.75rem,5vw,2.25rem);font-weight:800}.auth-content>p{color:var(--text-secondary);margin-bottom:2rem;font-size:1rem;line-height:1.5}.auth-tabs{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm);padding:1.5rem}@media (width>=1024px){.auth-tabs{padding:2rem}}.auth-panel,.clerk-root{width:100%}.clerk-card{border-radius:var(--radius-lg)!important;box-shadow:none!important;background:0 0!important;border:none!important;padding:0!important}.clerk-title{color:var(--text-primary)!important;text-align:center!important;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif!important;font-weight:700!important}.clerk-subtitle{color:var(--text-secondary)!important;text-align:center!important;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif!important}.clerk-label{color:var(--text-secondary)!important;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif!important;font-weight:500!important}.clerk-input{border-color:var(--border-color)!important;border-radius:var(--radius-lg)!important;color:var(--text-primary)!important;background:var(--bg-primary)!important;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif!important}.clerk-input:focus{border-color:var(--accent-color)!important;box-shadow:0 0 0 2px rgba(var(--accent-rgb), .15)!important}.clerk-button{background:var(--primary-color)!important;color:var(--text-inverse)!important;border-radius:var(--radius-lg)!important;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif!important;font-weight:600!important}.clerk-button:hover{background:var(--primary-hover)!important}.clerk-social{border-color:var(--border-color)!important;border-radius:var(--radius-lg)!important;color:var(--text-primary)!important;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif!important}.clerk-social:hover{background:var(--bg-hover)!important}.clerk-link{color:var(--accent-color)!important;font-weight:500!important;text-decoration:none!important}.clerk-link:hover{color:var(--accent-hover)!important;text-decoration:underline!important}.clerk-divider{background:var(--border-color)!important}.clerk-divider-text{color:var(--text-muted)!important;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif!important}.clerk-error{color:var(--danger-color)!important;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif!important}[data-theme=dark] .clerk-card{background:0 0!important}[data-theme=dark] .clerk-input{background:var(--bg-secondary)!important}@media (width>=640px){.container{padding:0 var(--spacing-xl)}}@media (width<=639px){.hidden-mobile{display:none}}@media (width>=640px){.hidden-desktop{display:none}}@media print{*{color:#000!important;box-shadow:none!important;text-shadow:none!important;background:0 0!important}a,a:visited{text-decoration:underline}.no-print{display:none!important}}.chat-page{background:var(--bg-secondary);justify-content:center;align-items:center;min-height:100vh;padding:1rem;display:flex;position:relative}.chat-page .chat-container{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-xl);width:100%;max-width:1000px;height:calc(100vh - 2rem);box-shadow:var(--shadow-lg);position:relative;overflow:hidden}@media (width>=1024px){.chat-page .chat-container{max-width:1200px}}@media (width<=767px){.chat-page{padding:var(--spacing-md)}.chat-page .chat-container{border-radius:var(--radius-lg);max-width:none;height:calc(100vh - 1rem)}}@media (width<=639px){.chat-page{padding:0}.chat-page .chat-container{height:100vh;box-shadow:none;border:none;border-radius:0}}@media (width>=640px){.container{padding:0 var(--spacing-xl)}}@media (width<=639px){.hidden-mobile{display:none}}@media (width>=640px){.hidden-desktop{display:none}}@media print{*{color:#000!important;box-shadow:none!important;text-shadow:none!important;background:0 0!important}a,a:visited{text-decoration:underline}.no-print{display:none!important}}.landing-page{background:var(--bg-secondary);min-height:100vh;transition:background-color var(--transition-normal), color var(--transition-normal);flex-direction:column;display:flex}.landing-header{border-bottom:1px solid var(--border-color);background:var(--bg-primary);justify-content:space-between;align-items:center;padding:1.25rem 1.5rem;display:flex}@media (width>=1024px){.landing-header{padding:1.25rem 3rem}}.landing-header .brand{align-items:center;gap:.625rem;display:flex}.landing-header .brand .brand-mark{border-radius:var(--radius-lg);background:var(--primary-color);width:32px;height:32px;color:var(--text-inverse);justify-content:center;align-items:center;display:flex}.landing-header .brand .brand-name{letter-spacing:-.01em;color:var(--text-primary);font-size:1.125rem;font-weight:700}.landing-header .header-actions{align-items:center;gap:.75rem;display:flex}.landing-header .header-actions .sign-in-link{cursor:pointer;transition:var(--transition-normal);-webkit-user-select:none;user-select:none;white-space:nowrap;border:none;outline:none;justify-content:center;align-items:center;font-family:inherit;font-weight:500;text-decoration:none;display:inline-flex}.landing-header .header-actions .sign-in-link:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.landing-header .header-actions .sign-in-link:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}.landing-header .header-actions .sign-in-link{border-radius:var(--radius-lg);border:1px solid var(--border-color);color:var(--text-secondary);padding:.5rem 1rem;font-size:.875rem;font-weight:500;text-decoration:none}.landing-header .header-actions .sign-in-link:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-hover)}.landing-main{flex:1;width:100%;max-width:720px;margin:0 auto;padding:2.5rem 1.5rem}@media (width>=1024px){.landing-main{padding:3.5rem 2rem}}.hero-section{text-align:center;padding-bottom:2.5rem}.hero-section .hero-content{max-width:640px;margin:0 auto}.hero-section .hero-content h1{letter-spacing:-.02em;color:var(--text-primary);margin-bottom:1.25rem;font-size:clamp(2rem,6vw,3rem);font-weight:900;line-height:1.12}.hero-section .hero-content>p{color:var(--text-secondary);max-width:56ch;margin:0 auto;font-size:1.125rem;line-height:1.6}.chat-starter{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-xl);margin-bottom:2.5rem;padding:1.5rem}@media (width>=1024px){.chat-starter{padding:2rem}}.chat-starter .starter-content .existing-session{background:var(--primary-light);border:1px solid rgba(var(--primary-rgb), .2);border-radius:var(--radius-lg);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1rem;padding:.75rem 1rem;display:flex}.chat-starter .starter-content .existing-session .existing-session-text{color:var(--primary-ink);font-size:.875rem;font-weight:600}.chat-starter .starter-content .existing-session .continue-button{cursor:pointer;transition:var(--transition-normal);-webkit-user-select:none;user-select:none;white-space:nowrap;border:none;outline:none;justify-content:center;align-items:center;font-family:inherit;font-weight:500;text-decoration:none;display:inline-flex}.chat-starter .starter-content .existing-session .continue-button:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.chat-starter .starter-content .existing-session .continue-button:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}.chat-starter .starter-content .existing-session .continue-button{background:var(--primary-color);color:#fff;border-radius:var(--radius-lg);padding:.5rem 1rem;font-size:.875rem;font-weight:600}.chat-starter .starter-content .existing-session .continue-button:hover{background:var(--primary-hover)}.chat-starter .starter-content .message-input-container{max-width:640px;margin:0 auto}.chat-starter .starter-content .starter-error{margin-top:1rem}.examples-section{text-align:center;padding-bottom:3rem}.examples-section h3{color:var(--text-primary);margin-bottom:1.5rem;font-size:1.125rem;font-weight:700}.examples-section .example-queries{grid-template-columns:1fr;gap:.75rem;max-width:640px;margin:0 auto;display:grid}@media (width>=640px){.examples-section .example-queries{grid-template-columns:repeat(2,1fr)}}.examples-section .example-queries .example-button{cursor:pointer;transition:var(--transition-normal);-webkit-user-select:none;user-select:none;white-space:nowrap;border:none;outline:none;justify-content:center;align-items:center;font-family:inherit;font-weight:500;text-decoration:none;display:inline-flex}.examples-section .example-queries .example-button:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.examples-section .example-queries .example-button:focus-visible{outline:2px solid var(--accent-color);outline-offset:2px}.examples-section .example-queries .example-button{background:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-secondary);border-radius:var(--radius-full);text-align:center;justify-content:flex-start;padding:.75rem 1.25rem;font-size:.9rem;line-height:1.4}@media (width>=640px){.examples-section .example-queries .example-button{justify-content:center}}.examples-section .example-queries .example-button:hover:not(:disabled){border-color:var(--accent-color);color:var(--accent-hover);background:rgba(var(--accent-rgb), .06)}.examples-section .example-queries .example-button:disabled{opacity:.5;transform:none}.features-section{padding-bottom:1rem}.features-section .features-grid{grid-template-columns:1fr;gap:1rem;margin:0;padding:0;list-style:none;display:grid}@media (width>=640px){.features-section .features-grid{grid-template-columns:repeat(3,1fr);gap:1.25rem}}.features-section .features-grid .feature-card{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:var(--radius-xl);text-align:left;transition:border-color var(--transition-normal);padding:1.75rem 1.5rem}.features-section .features-grid .feature-card:hover{border-color:var(--border-hover)}.features-section .features-grid .feature-card .feature-icon{border-radius:var(--radius-lg);background:var(--primary-light);width:44px;height:44px;color:var(--primary-color);justify-content:center;align-items:center;margin-bottom:1.25rem;display:flex}.features-section .features-grid .feature-card h3{color:var(--text-primary);margin-bottom:.5rem;font-size:1.125rem;font-weight:700}.features-section .features-grid .feature-card p{color:var(--text-secondary);margin:0;font-size:.875rem;line-height:1.5}.landing-footer{border-top:1px solid var(--border-color);background:var(--bg-primary);padding:1.5rem}.landing-footer p{max-width:720px;color:var(--text-muted);text-align:center;margin:0 auto;font-size:.875rem}[data-theme=dark] :scope .chat-starter,[data-theme=dark] :scope .example-queries .example-button{background:var(--bg-secondary);border-color:var(--border-color)}[data-theme=dark] :scope .example-queries .example-button:hover:not(:disabled){background:rgba(var(--accent-rgb), .12)}[data-theme=dark] :scope .features-grid .feature-card{background:var(--bg-secondary);border-color:var(--border-color)}[data-theme=dark] :scope .features-grid .feature-card:hover{border-color:var(--border-hover)}[data-theme=dark] :scope .features-grid .feature-card .feature-icon{background:rgba(var(--accent-rgb), .12);color:var(--accent-soft)}[data-theme=dark] :scope .existing-session{background:rgba(var(--accent-rgb), .1);border-color:rgba(var(--accent-rgb), .25)}[data-theme=dark] :scope .existing-session .existing-session-text{color:var(--accent-soft)}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}@media (width>=640px){.container{padding:0 var(--spacing-xl)}}@media (width<=639px){.hidden-mobile{display:none}}@media (width>=640px){.hidden-desktop{display:none}}@media print{*{color:#000!important;box-shadow:none!important;text-shadow:none!important;background:0 0!important}a,a:visited{text-decoration:underline}.no-print{display:none!important}}:root{--primary-color:#1a1a1a;--primary-hover:#0a0a0a;--primary-ink:#000;--primary-light:#f2f2f0;--accent-color:#6b7c5e;--accent-hover:#56654c;--accent-light:#eef0ec;--accent-soft:#7e8f72;--ink:#1a1a1a;--ink-soft:#525252;--ink-muted:#6b6b6b;--paper:#fff;--paper-soft:#fafaf9;--paper-faint:#f2f2f0;--paper-hover:#e7e7e5;--hairline:#e7e7e5;--hairline-deep:#d4d4d2;--bg-primary:#fff;--bg-secondary:#fafaf9;--bg-tertiary:#f2f2f0;--bg-hover:#e7e7e5;--bg-overlay:#1a1a1a99;--text-primary:#1a1a1a;--text-secondary:#525252;--text-muted:#6b6b6b;--text-inverse:#fff;--text-accent:#6b7c5e;--border-color:#e7e7e5;--border-hover:#d4d4d2;--border-focus:#6b7c5e;--success-color:#4a7c59;--success-light:#e8f0ea;--warning-color:#b4752b;--warning-light:#f8f0e4;--danger-color:#a53c3c;--danger-light:#f8e8e8;--info-color:#5a7c6b;--info-light:#e8eeea;--user-bubble:#1a1a1a;--user-text:#fff;--bot-bubble:#fff;--bot-bubble-border:#e7e7e5;--bot-text:#1a1a1a;--primary-rgb:26, 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.94);--z-dropdown:1000;--z-sticky:1020;--z-fixed:1030;--z-modal-backdrop:1040;--z-modal:1050;--z-popover:1060;--z-tooltip:1070}[data-theme=dark]{--bg-primary:#121212;--bg-secondary:#1a1a1a;--bg-tertiary:#242424;--bg-hover:#2e2e2e;--bg-overlay:#000000b3;--text-primary:#f5f5f4;--text-secondary:#a8a8a8;--text-muted:#7a7a7a;--text-inverse:#1a1a1a;--primary-light:#ffffff14;--primary-soft:#a8b09d;--accent-soft:#8b9a7f;--border-color:#333;--border-hover:#444;--border-focus:#8b9a7f;--bot-bubble:#1a1a1a;--bot-bubble-border:#333;--bot-text:#f5f5f4;--success-light:#4a7c591f;--warning-light:#b4752b1f;--danger-light:#a53c3c1f;--info-light:#5a7c6b1f;--shadow-sm:0 1px 3px 0 #0006;--shadow-md:0 4px 8px -2px #0006;--shadow-lg:0 8px 20px -4px #00000080;--shadow-glow:0 0 0 4px 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