@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap");:root{--color-bg:#f5f5f5;--color-surface:#fff;--color-surface-alt:#eee;--color-border:#e0e0e0;--color-text:#1a1a1a;--color-text-muted:#6b7280;--color-text-light:#9ca3af;--color-primary:#2d6a4f;--color-primary-hover:#1b4332;--color-primary-light:#d8f3dc;--color-accent:#40916c;--color-danger:#dc2626;--color-danger-hover:#b91c1c;--color-success:#16a34a;--color-warning:#f59e0b;--chat-bubble-color:var(--color-primary);--nav-bg:#fff;--nav-shadow:0 2px 16px rgba(0,0,0,0.06);--nav-text:#4b5563;--nav-text-hover:#1a1a1a;--nav-brand:#2d6a4f;--pattern-dot-color:rgba(45,106,79,0.12);--font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-size-xs:0.75rem;--font-size-sm:0.875rem;--font-size-base:1rem;--font-size-lg:1.125rem;--font-size-xl:1.25rem;--font-size-2xl:1.5rem;--font-size-3xl:1.875rem;--font-size-4xl:2.25rem;--font-size-5xl:3rem;--font-size-hero:3.5rem;--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-20:5rem;--radius-sm:0.375rem;--radius-md:0.5rem;--radius-lg:0.75rem;--radius-xl:1rem;--radius-2xl:1.5rem;--radius-full:9999px;--transition-fast:150ms ease;--transition-base:250ms ease;--transition-slow:400ms ease;--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-lg:0 8px 24px rgba(0,0,0,0.1);--shadow-xl:0 12px 40px rgba(0,0,0,0.12)}[data-theme=dark]{--color-bg:#0f0f0f;--color-surface:#1a1a1a;--color-surface-alt:#252525;--color-border:#333;--color-text:#f0f0f0;--color-text-muted:#9ca3af;--color-text-light:#6b7280;--color-primary:#40916c;--color-primary-hover:#52b788;--color-primary-light:#1b4332;--color-accent:#52b788;--nav-bg:#1a1a1a;--nav-shadow:0 2px 16px rgba(0,0,0,0.3);--nav-text:#9ca3af;--nav-text-hover:#f0f0f0;--nav-brand:#52b788;--pattern-dot-color:rgba(82,183,136,0.08)}::view-transition-new(root),::view-transition-old(root){animation:none;mix-blend-mode:normal}[data-theme=light]::view-transition-old(root){z-index:2}[data-theme=dark]::view-transition-old(root),[data-theme=light]::view-transition-new(root){z-index:1}[data-theme=dark]::view-transition-new(root){z-index:2}*,:after,:before{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-family);font-size:var(--font-size-base);line-height:1.6;color:var(--color-text);background-color:var(--color-bg);transition:background-color var(--transition-base),color var(--transition-base);min-height:100vh;display:flex;flex-direction:column;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{text-decoration:none;color:var(--color-primary);transition:color var(--transition-fast)}a:hover{color:var(--color-primary-hover)}img{max-width:100%;height:auto;display:block}button,input,select,textarea{font-family:inherit;font-size:inherit}ol,ul{list-style:none}.nav-wrapper{position:fixed;top:0;left:0;right:0;z-index:1000;padding:var(--space-4) var(--space-6);pointer-events:none}.nav-back-btn,.nav-wrapper{display:flex;justify-content:center}.nav-back-btn{position:absolute;left:var(--space-6);top:50%;transform:translateY(-50%);align-items:center;width:40px;height:40px;border-radius:50%;background:var(--nav-bg);border:1px solid var(--color-border);color:var(--color-text-dim);box-shadow:var(--nav-shadow);pointer-events:all;transition:all var(--transition-base);text-decoration:none}.nav-back-btn:hover{color:var(--color-text);background:var(--color-bg-hover)}.nav-back-btn svg{width:20px;height:20px}.nav-pill{gap:var(--space-1);background:var(--nav-bg);border:1px solid var(--color-border);border-radius:var(--radius-full);padding:0 var(--space-2) 0 var(--space-1);box-shadow:var(--nav-shadow);pointer-events:all;transition:background var(--transition-base),border-color var(--transition-base),box-shadow var(--transition-base)}.nav-brand,.nav-pill{display:flex;align-items:center}.nav-brand{font-weight:800;font-size:var(--font-size-lg);color:var(--nav-brand);letter-spacing:-.02em;transition:color var(--transition-fast)}.nav-brand-logo{height:80px;margin-top:-10px;margin-bottom:-10px;width:auto;display:none}.nav-brand-logo--light{display:block}[data-theme=dark] .nav-brand-logo--light{display:none}[data-theme=dark] .nav-brand-logo--dark{display:block}.nav-link{color:var(--nav-text);font-weight:500;font-size:var(--font-size-sm);padding:var(--space-2) var(--space-4);border-radius:var(--radius-full);transition:all var(--transition-fast);white-space:nowrap}.nav-link:hover{color:var(--nav-text-hover);background:var(--color-surface-alt)}.nav-link.active{color:var(--color-primary);background:var(--color-primary-light);font-weight:600}.theme-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:none;background:transparent;color:var(--nav-text);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);flex-shrink:0;margin-left:auto}.theme-toggle:hover{color:var(--nav-text-hover);background:var(--color-surface-alt)}.theme-toggle svg{width:18px;height:18px;transition:transform var(--transition-base)}.theme-toggle:hover svg{transform:rotate(15deg)}.theme-toggle .icon-sun,[data-theme=dark] .theme-toggle .icon-moon{display:none}[data-theme=dark] .theme-toggle .icon-sun{display:block}.settings-toggle{display:none;align-items:center;justify-content:center;width:36px;height:36px;border:none;background:transparent;color:var(--nav-text);border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);flex-shrink:0}body.chat-page-body.chat-in-session .settings-toggle{display:flex}.settings-toggle:hover{color:var(--nav-text-hover);background:var(--color-surface-alt)}.settings-toggle svg{width:18px;height:18px;transition:transform var(--transition-base)}.settings-toggle:hover svg{transform:rotate(15deg)}.settings-modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;z-index:9997}.settings-modal.show{display:flex}body.settings-open{overflow:hidden}.settings-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.45);backdrop-filter:blur(2px)}.settings-panel{position:relative;z-index:1;width:min(520px,92vw);background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-xl);padding:var(--space-6)}.settings-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-4)}.settings-header h3{font-size:var(--font-size-lg);font-weight:700;color:var(--color-text)}.settings-close{width:32px;height:32px;border-radius:var(--radius-full);border:1px solid var(--color-border);background:var(--color-surface-alt);color:var(--color-text);font-size:20px;line-height:1;cursor:pointer}.settings-section{padding-top:var(--space-4);border-top:1px solid var(--color-border)}.settings-section:first-of-type{padding-top:0;border-top:none}.settings-section-title{font-size:var(--font-size-sm);font-weight:700;color:var(--color-text);margin-bottom:var(--space-3);letter-spacing:.02em;text-transform:uppercase}.settings-option-row{flex-wrap:wrap;margin-bottom:var(--space-2)}.settings-option-row,.settings-theme-toggle{display:flex;gap:var(--space-2)}.settings-option{flex:1;border:1px solid var(--color-border);background:var(--color-surface-alt);color:var(--color-text);padding:var(--space-2) var(--space-3);border-radius:var(--radius-full);font-size:var(--font-size-sm);cursor:pointer;transition:all var(--transition-fast)}.settings-option--compact{flex:0 0 auto;padding:6px 14px;font-size:12px}.settings-option.is-active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.settings-color-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:var(--space-2)}.settings-color{width:100%;aspect-ratio:1/1;border-radius:var(--radius-lg);border:2px solid transparent;background:var(--swatch);cursor:pointer;transition:transform var(--transition-fast),border-color var(--transition-fast)}.settings-color:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.settings-color.is-active{border-color:var(--color-text);transform:scale(1.02)}.settings-custom{margin-top:var(--space-4);padding:var(--space-3);border:1px dashed var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface-alt);display:flex;align-items:center;gap:var(--space-3);justify-content:space-between;flex-wrap:wrap}.settings-custom.is-active{border-color:var(--color-primary)}.settings-custom-label{font-size:var(--font-size-xs);font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted)}.settings-custom-controls{display:flex;align-items:center;gap:var(--space-2);flex-wrap:wrap;justify-content:flex-end}.settings-color-input{width:40px;height:40px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:transparent;padding:0;cursor:pointer}.settings-color-text{width:110px;border:1px solid var(--color-border);border-radius:var(--radius-full);padding:.4rem .7rem;background:var(--color-surface);color:var(--color-text);font-size:var(--font-size-xs)}.settings-color-input:focus-visible,.settings-color-text:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.settings-hint{margin-top:var(--space-3);font-size:var(--font-size-xs);color:var(--color-text-muted)}body:not(.chat-page-body) .settings-chat-color{display:none}.nav-links{display:flex;gap:var(--space-1)}.btn,.nav-links{align-items:center}.btn{display:inline-flex;justify-content:center;gap:var(--space-2);font-weight:600;font-size:var(--font-size-sm);padding:var(--space-3) var(--space-6);border:2px solid transparent;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;text-align:center}.btn:active{transform:scale(.97)}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover{background:var(--color-primary-hover);border-color:var(--color-primary-hover);color:#fff}.btn-outline{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}.btn-outline:hover{background:var(--color-primary);color:#fff}.btn-ghost{background:transparent;color:var(--color-text-muted);border-color:transparent}.btn-ghost:hover{color:var(--color-text);background:var(--color-surface-alt)}.btn-danger{background:var(--color-danger);color:#fff;border-color:var(--color-danger)}.btn-danger:hover{background:var(--color-danger-hover);border-color:var(--color-danger-hover);color:#fff}.btn-lg{font-size:var(--font-size-base);padding:var(--space-4) var(--space-8)}.btn-sm{font-size:var(--font-size-xs);padding:var(--space-2) var(--space-4)}.form-group{display:flex;flex-direction:column;gap:var(--space-2)}[hidden]{display:none!important}.form-label{font-weight:600;font-size:var(--font-size-sm);color:var(--color-text)}.form-input,.form-select{width:100%;padding:var(--space-3) var(--space-4);background:var(--color-surface);border:1.5px solid var(--color-border);border-radius:var(--radius-lg);color:var(--color-text);font-size:var(--font-size-base);transition:border-color var(--transition-fast),box-shadow var(--transition-fast);outline:none}.form-input:focus,.form-select:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px rgba(45,106,79,.15)}.form-input::placeholder{color:var(--color-text-light)}.form-error{font-size:var(--font-size-xs);color:var(--color-danger);font-weight:500}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-6);transition:all var(--transition-base)}.card:hover{box-shadow:var(--shadow-md)}.card-interactive{cursor:pointer}.card-interactive:hover{border-color:var(--color-primary);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.badge{display:inline-flex;align-items:center;gap:var(--space-1);font-size:var(--font-size-xs);font-weight:600;padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);background:var(--color-primary-light);color:var(--color-primary)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-6)}.container-sm{max-width:640px}.container-md{max-width:860px}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.text-sm{font-size:var(--font-size-sm)}.text-lg{font-size:var(--font-size-lg)}.text-xl{font-size:var(--font-size-xl)}.mt-4{margin-top:var(--space-4)}.mt-6{margin-top:var(--space-6)}.mt-8{margin-top:var(--space-8)}.mt-12{margin-top:var(--space-12)}.mb-4{margin-bottom:var(--space-4)}.mb-6{margin-bottom:var(--space-6)}.mb-8{margin-bottom:var(--space-8)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.gap-2{gap:var(--space-2)}.gap-3{gap:var(--space-3)}.gap-4{gap:var(--space-4)}.gap-6{gap:var(--space-6)}.toast-container{position:fixed;top:80px;right:var(--space-6);z-index:9999;flex-direction:column;pointer-events:none}.toast,.toast-container{display:flex;gap:var(--space-3)}.toast{align-items:center;padding:var(--space-4) var(--space-5);border-radius:var(--radius-xl);font-size:var(--font-size-sm);font-weight:600;color:var(--color-text);max-width:380px;min-width:260px;pointer-events:all;background:var(--color-surface);border:1px solid var(--color-border);box-shadow:var(--shadow-md);animation:toastIn .4s cubic-bezier(.16,1,.3,1);position:relative;overflow:hidden}.toast:before{content:none}.toast-icon{flex-shrink:0;display:flex;align-items:center;justify-content:center;opacity:.95}.toast-icon,.toast-icon svg{width:22px;height:22px}.toast-msg{flex:1;line-height:1.4;letter-spacing:-.01em}.toast.toast-success{background:color-mix(in srgb,var(--color-primary) 8%,var(--color-surface));border-color:color-mix(in srgb,var(--color-primary) 45%,var(--color-border))}.toast.toast-error{background:color-mix(in srgb,var(--color-danger) 8%,var(--color-surface));border-color:color-mix(in srgb,var(--color-danger) 45%,var(--color-border))}.toast.toast-warning{background:color-mix(in srgb,var(--color-warning) 10%,var(--color-surface));border-color:color-mix(in srgb,var(--color-warning) 45%,var(--color-border))}.toast.toast-success .toast-icon{color:var(--color-primary)}.toast.toast-error .toast-icon{color:var(--color-danger)}.toast.toast-warning .toast-icon{color:var(--color-warning)}.toast.removing{animation:toastOut .4s cubic-bezier(.5,0,1,.5) forwards}.footer{padding:var(--space-4) var(--space-6);border-top:1px solid var(--color-border);margin-top:auto}.chat-page~.footer{display:none}.footer-content{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto}.footer-brand{display:inline-flex;align-items:center;font-weight:800;font-size:var(--font-size-sm);color:var(--color-primary)}.footer-brand-logo{height:100px;margin:-35px 0;width:auto;display:none}.footer-brand-logo--light{display:block}[data-theme=dark] .footer-brand-logo--light{display:none}[data-theme=dark] .footer-brand-logo--dark{display:block}.footer-text{font-size:var(--font-size-xs);color:var(--color-text-muted)}.footer-links{display:flex;gap:var(--space-4)}.footer-link{font-size:var(--font-size-xs);color:var(--color-text-muted);transition:color var(--transition-fast)}.footer-link:hover{color:var(--color-primary)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}@keyframes toastIn{0%{opacity:0;transform:translateX(60px) scale(.95)}to{opacity:1;transform:translateX(0) scale(1)}}@keyframes toastOut{0%{opacity:1;transform:translateX(0) scale(1)}to{opacity:0;transform:translateX(60px) scale(.95)}}@keyframes toastShimmer{0%{left:-100%}to{left:150%}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes spin{to{transform:rotate(1turn)}}.animate-fadeIn{animation:fadeIn .5s ease}.animate-slideUp{animation:slideUp .6s ease}.animate-slideDown{animation:slideDown .4s ease}.animate-pulse{animation:pulse 2s infinite}html.js .will-animate{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}html.js .will-animate.animated{opacity:1;transform:translateY(0)}.spinner{width:32px;height:32px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;animation:spin .7s linear infinite}@media (max-width:768px){:root{--font-size-hero:2.25rem;--font-size-5xl:2rem}.nav-wrapper{padding:var(--space-3) var(--space-4)}.nav-pill{width:auto;justify-content:center;padding:0 var(--space-2) 0 var(--space-1)}.nav-brand{padding-left:var(--space-1);padding-right:var(--space-1)}.nav-links{gap:0}.nav-link{padding:var(--space-2) var(--space-2);font-size:var(--font-size-xs)}.container{padding:0 var(--space-4)}.footer-content{flex-direction:column;gap:var(--space-4);text-align:center}.footer-links{flex-wrap:wrap;justify-content:center}}@media (max-width:480px){:root{--font-size-hero:1.875rem}}