:root{color-scheme:light}.app-shell{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:#1e293b}.app-header{position:sticky;top:0;z-index:100;background:#fffffff2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.2);box-shadow:0 8px 32px #0000001a}.app-header__inner{max-width:1200px;margin:0 auto;padding:1.25rem 2rem;display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.app-brand{display:flex;align-items:center;gap:1rem;flex:1 1 auto;min-width:240px}.app-logo{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:2.25rem;background:linear-gradient(135deg,#667eea,#764ba2);box-shadow:0 4px 16px #667eea4d;color:#fff}.app-title{margin:0;font-size:2rem;font-weight:700;background:linear-gradient(135deg,#2c3e50,#34495e);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.02em}.app-subtitle{margin:.25rem 0 0;color:#64748b;font-size:.95rem;font-weight:500}.app-header__actions{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;justify-content:flex-end}.app-content{max-width:960px;margin:0 auto;padding:3rem 2rem 4rem;display:flex;flex-direction:column;gap:2rem}.app-card{background:#fffffff2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-radius:20px;padding:2.25rem;box-shadow:0 16px 32px #0f172a1f,0 0 0 1px #ffffff40;border:1px solid rgba(255,255,255,.2);display:flex;flex-direction:column;gap:1.5rem}.app-card--signin{text-align:center;border:1px solid #e2e8f0;box-shadow:0 8px 24px #0f172a14}.app-card__title{margin:0;font-size:1.75rem;font-weight:600}.app-card__copy{margin:0 0 1.5rem;color:#475569;font-size:1rem}.app-card--query{gap:2rem}.app-field{display:flex;flex-direction:column;gap:.75rem}.app-field-label{font-size:1.1rem;font-weight:600;color:#1e293b;letter-spacing:-.01em}.app-textarea__wrapper{position:relative}.app-textarea{width:100%;min-height:160px;padding:1.25rem 3.5rem 1.25rem 1.25rem;font-size:1rem;line-height:1.6;font-family:inherit;border:2px solid #e2e8f0;border-radius:12px;background:#fff;box-shadow:0 1px 3px #00000014;resize:vertical;transition:border .2s ease,box-shadow .2s ease}.app-textarea:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea26,0 6px 18px #667eea1f}.app-char-counter{position:absolute;bottom:12px;right:12px;font-size:.75rem;color:#94a3b8;font-weight:500}.app-actions{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.app-action-group{display:flex;align-items:center;gap:.75rem;flex-wrap:wrap}.app-key-hint{font-size:.875rem;color:#94a3b8;font-weight:500}.app-btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.875rem 1.75rem;border-radius:12px;border:none;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background .2s ease,border-color .2s ease;text-decoration:none}.app-btn--sm{padding:.5rem 1.1rem;font-size:.95rem}.app-btn--primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 4px 16px #667eea4d}.app-btn--primary:not(.is-disabled):hover{transform:translateY(-2px);box-shadow:0 10px 24px #667eea59}.app-btn--primary:not(.is-disabled):active{transform:translateY(0);box-shadow:0 6px 16px #667eea4d}.app-btn--ghost{background:#fff;color:#475569;border:2px solid #e2e8f0;font-weight:500}.app-btn--ghost:not(.is-disabled):hover{border-color:#cbd5e1;background:#f8fafc;color:#1e293b}.app-btn--danger-outline{background:#fff;color:#dc2626;border:2px solid #fecaca}.app-btn--danger-outline:hover{background:#fef2f2}.app-btn--dark{background:#111827;color:#fff;box-shadow:0 8px 24px #11182766}.app-btn--dark:hover{background:#0f172a}.app-btn.is-disabled{cursor:not-allowed;opacity:.6;box-shadow:none;transform:none;pointer-events:none}.loader-spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite}.loader-spinner--lg{width:48px;height:48px;border-width:4px;border-color:#e2e8f0;border-top-color:#667eea}.research-card__header{display:flex;align-items:center;gap:1.5rem}.research-card__spinner,.research-card__status{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center}.research-card__spinner{border:4px solid rgba(148,163,184,.2)}.research-card__status{background:#eef2ff;color:#667eea;font-weight:700;font-size:1.2rem}.research-card__title{margin:0;font-size:1.25rem;font-weight:600;color:#1e293b}.research-card__copy{margin:.35rem 0 0;color:#64748b;font-size:.95rem}.app-research-log{margin-top:1.5rem;border-top:1px solid #e2e8f0;padding-top:1rem;max-height:320px;overflow-y:auto}.error-card{background:#fef2f2f2;border:1px solid #fecaca;box-shadow:0 12px 28px #ef44441f}.error-card__body{display:flex;align-items:flex-start;gap:1rem}.error-card__icon{font-size:1.25rem;color:#dc2626}.error-card__title{margin:0;font-size:1rem;font-weight:600;color:#dc2626}.error-card__copy{margin:.25rem 0 0;color:#b91c1c;font-size:.95rem;line-height:1.5}.answer-card{padding:0;overflow:hidden}.answer-card__header{background:linear-gradient(135deg,#f0fdf4,#dcfce7);padding:1.5rem 2rem;border-bottom:1px solid rgba(34,197,94,.2)}.answer-card__title{margin:0;font-size:1.25rem;font-weight:600;color:#166534;display:flex;align-items:center;gap:.75rem}.answer-card__body{padding:2rem;font-size:1rem;line-height:1.7;color:#1e293b}.app-markdown h1{color:#1e293b;border-bottom:3px solid #667eea;padding-bottom:.75rem;margin-bottom:1.5rem;font-size:1.75rem;font-weight:700}.app-markdown h2{color:#334155;margin-top:2rem;margin-bottom:1rem;font-size:1.5rem;font-weight:600}.app-markdown h3{color:#475569;margin-top:1.5rem;margin-bottom:.75rem;font-size:1.25rem;font-weight:600}.app-markdown p{margin-bottom:1.25rem;line-height:1.7}.app-markdown strong{color:#1e293b;font-weight:700}.app-markdown em{color:#64748b;font-style:italic}.app-markdown code{background:#f1f5f9;padding:.25rem .5rem;border-radius:6px;font-size:.9rem;font-family:ui-monospace,SFMono-Regular,SF Mono,Monaco,Consolas,monospace;border:1px solid #e2e8f0}.app-markdown pre{background:#f8fafc;padding:1.5rem;border-radius:12px;overflow:auto;border:1px solid #e2e8f0;font-size:.9rem;line-height:1.6}.app-markdown blockquote{border-left:4px solid #667eea;padding-left:1.5rem;margin:1.5rem 0;font-style:italic;color:#64748b;background:#f8fafc;padding:1rem 1.5rem;border-radius:0 8px 8px 0}.app-markdown ul,.app-markdown ol{padding-left:1.5rem;margin-bottom:1.25rem}.app-markdown li{margin-bottom:.5rem;line-height:1.6}.admin-panel{margin-top:1rem}.app-footer{text-align:center;margin:3rem auto 0;color:#ffffffd9;font-size:.9rem;line-height:1.6;max-width:720px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@media (max-width: 1024px){.app-content{padding:2.5rem 1.75rem 3rem}}@media (max-width: 768px){.app-header__inner{padding:1rem 1.25rem;flex-direction:column;align-items:flex-start}.app-header__actions{width:100%;justify-content:flex-start}.app-brand{width:100%}.app-logo{width:44px;height:44px;font-size:1.75rem}.app-title{font-size:1.65rem}.app-subtitle{font-size:.9rem}.app-content{padding:2rem 1.5rem 2.5rem}.app-card{padding:1.85rem;border-radius:16px}.app-actions{flex-direction:column;align-items:stretch}.app-action-group{width:100%;flex-direction:column;align-items:stretch}.app-action-group .app-btn{width:100%}.app-key-hint{margin-left:0}.app-research-log{max-height:240px}.answer-card__body{padding:1.5rem}}@media (max-width: 480px){.app-header__inner{padding:.85rem 1rem}.app-content{padding:1.5rem 1rem 2.25rem}.app-card{padding:1.5rem}.app-title{font-size:1.45rem}.app-card__title{font-size:1.5rem}.app-markdown{font-size:.95rem}.app-markdown h1{font-size:1.5rem}.app-markdown h2{font-size:1.35rem}.app-markdown h3{font-size:1.1rem}}@tailwind base;@tailwind components;@tailwind utilities;body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}