:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--bg: #ffffff;--surface: rgba(255, 255, 255, .74);--surface-strong: rgba(255, 255, 255, .9);--surface-soft: rgba(17, 24, 39, .03);--border: rgba(17, 24, 39, .1);--border-strong: rgba(17, 24, 39, .16);--text: #0b1220;--muted: rgba(11, 18, 32, .62);--blue: #2563eb;--blue-strong: #1d4ed8;--green: #10b981;--danger: #dc2626;--shadow: 0 10px 30px rgba(2, 6, 23, .08);--shadow-2: 0 18px 50px rgba(2, 6, 23, .12);color-scheme:light}.dark{--bg: #060a12;--surface: rgba(255, 255, 255, .06);--surface-strong: rgba(8, 12, 20, .85);--surface-soft: rgba(255, 255, 255, .08);--border: rgba(255, 255, 255, .12);--border-strong: rgba(255, 255, 255, .18);--text: rgba(255, 255, 255, .94);--muted: rgba(255, 255, 255, .62);--blue: #60a5fa;--blue-strong: #93c5fd;--green: #34d399;--danger: #f87171;--shadow: 0 10px 30px rgba(0, 0, 0, .35);--shadow-2: 0 18px 50px rgba(0, 0, 0, .5);color-scheme:dark}html,body,#root{min-height:100%}body{margin:0;background:var(--bg);color:var(--text)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}button,input,textarea{font:inherit}a{color:inherit;text-decoration:none}button{cursor:pointer}.screen{min-height:100vh;position:relative;overflow:hidden;background:radial-gradient(circle at top left,rgba(37,99,235,.18),transparent 35%),radial-gradient(circle at top right,rgba(16,185,129,.15),transparent 30%),linear-gradient(180deg,rgba(255,255,255,.02),transparent 55%)}.dark .screen{background:radial-gradient(circle at top left,rgba(96,165,250,.16),transparent 35%),radial-gradient(circle at top right,rgba(52,211,153,.12),transparent 30%),linear-gradient(180deg,rgba(255,255,255,.02),transparent 55%)}.screen:before,.screen:after{content:"";position:absolute;border-radius:999px;pointer-events:none;filter:blur(12px)}.screen:before{inset:-18rem auto auto -12rem;width:28rem;height:28rem;background:radial-gradient(circle at center,rgba(37,99,235,.22),transparent 65%)}.dark .screen:before{background:radial-gradient(circle at center,rgba(96,165,250,.18),transparent 65%)}.screen:after{inset:6rem -14rem auto auto;width:34rem;height:34rem;background:radial-gradient(circle at center,rgba(16,185,129,.18),transparent 65%)}.dark .screen:after{background:radial-gradient(circle at center,rgba(52,211,153,.14),transparent 65%)}.shell{position:relative;z-index:1;width:min(1180px,calc(100% - 2rem));margin:0 auto;padding:1.25rem 0 2rem}.login-shell{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);gap:1.5rem;align-items:center;min-height:100vh}.app-shell,.loading-shell{min-height:100vh;display:flex;align-items:center}.app-screen{overflow-y:auto;overflow-x:hidden}.app-shell{align-items:flex-start}.loading-shell{justify-content:center}.surface{background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);border-radius:1.5rem;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);overflow:hidden}.login-panel,.app-panel,.loading-card{box-shadow:var(--shadow-2)}.panel-header{display:flex;align-items:start;justify-content:space-between;gap:1rem;padding:1.15rem 1.4rem;border-bottom:1px solid var(--border)}.panel-body{padding:1.35rem 1.4rem 1.4rem}.compact-header{padding:0 0 1rem;border:0}.eyebrow{font-size:.72rem;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);font-weight:700}.panel-header h1,.panel-header h2,.hero-copy h1{margin:.2rem 0 0;line-height:1.05}.panel-header h1{font-size:clamp(1.7rem,3vw,2.5rem)}.panel-header h2{font-size:1.15rem}.panel-meta{color:var(--muted);font-size:.9rem;white-space:nowrap}.hero-copy{max-width:34rem;animation:fade-up .48s ease-out both}.hero-copy h1{font-size:clamp(2.6rem,5vw,4.5rem);letter-spacing:-.04em}.hero-copy p{margin:1rem 0 0;max-width:32rem;color:var(--muted);font-size:1.02rem}.feature-row,.prompt-row{display:flex;flex-wrap:wrap;gap:.6rem}.feature-row{margin-top:1.2rem}.feature-chip,.session-pill,.prompt-chip,.source-pill,.source-card__badge{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;border:1px solid var(--border);background:var(--surface-soft)}.feature-chip,.session-pill,.source-pill{padding:.5rem .8rem;font-size:.82rem;color:var(--text)}.session-pill{letter-spacing:.04em;text-transform:uppercase}.session-pill--active{border-color:#10b98159;background:#10b98114;color:var(--green)}.page-toolbar,.header-actions{display:flex;align-items:center;gap:.6rem;flex-wrap:wrap}.app-docs-link{text-decoration:none}.login-panel-wrap{display:flex;flex-direction:column;gap:.85rem;animation:fade-up .54s ease-out 80ms both}.stack{display:grid;gap:1rem}.field{display:grid;gap:.45rem;margin:0;min-inline-size:0;border:0;padding:0}.field span{font-size:.85rem;font-weight:600;color:var(--muted)}.field input:not([type=radio]):not([type=checkbox]),.field textarea{width:100%;border-radius:1rem;border:1px solid var(--border);background:var(--surface-strong);color:var(--text);padding:.95rem 1rem;outline:none;transition:border-color .16s ease,box-shadow .16s ease,transform .16s ease}.field input:not([type=radio]):not([type=checkbox]):focus,.field textarea:focus{border-color:#2563eb8c;box-shadow:0 0 0 4px #2563eb24}.field textarea{resize:vertical;min-height:10rem}.mode-toggle{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem}.mode-option{display:flex;align-items:center;justify-content:center;gap:.5rem;border:1px solid var(--border);border-radius:.9rem;background:var(--surface-strong);padding:.6rem .75rem;font-size:.9rem;font-weight:600;color:var(--text);cursor:pointer}.mode-option--active{border-color:#2563eb99;box-shadow:0 0 0 3px #2563eb24}.mode-option input{margin:0}.mode-option input:checked+span{color:var(--blue-strong)}.field--large textarea{min-height:11rem}.field input:not([type=radio]):not([type=checkbox]):disabled,.field textarea:disabled,button:disabled{opacity:.68;cursor:not-allowed}.primary-button,.secondary-button,.icon-button,.prompt-chip{border:1px solid var(--border);border-radius:1rem;transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease,background .16s ease}.primary-button,.secondary-button{padding:.95rem 1.1rem;font-weight:700}.primary-button{color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue-strong));box-shadow:0 18px 36px #2563eb42}.primary-button:hover:not(:disabled){transform:translateY(-1px)}.secondary-button,.icon-button,.prompt-chip{background:var(--surface-strong);color:var(--text)}.secondary-button:hover:not(:disabled),.icon-button:hover:not(:disabled),.prompt-chip:hover:not(:disabled){border-color:var(--border-strong);transform:translateY(-1px)}.icon-button{display:inline-flex;align-items:center;gap:.45rem;padding:.82rem .95rem}.theme-toggle__dot{font-size:.95rem}.theme-toggle__label{font-weight:600;font-size:.9rem}.alert{border-radius:1rem;padding:.9rem 1rem;font-size:.92rem;border:1px solid transparent}.alert.error{border-color:#dc26263d;background:#dc262614;color:var(--danger)}.login-shell .login-panel-wrap{align-self:stretch}.login-shell .login-panel{min-height:31rem}.loading-card{width:min(34rem,100%);padding:1.4rem}.skeleton{border-radius:1rem;background:linear-gradient(90deg,var(--surface-soft),rgba(255,255,255,.14),var(--surface-soft));background-size:220% 100%;animation:shimmer 1.4s ease-in-out infinite}.skeleton--title{height:1.2rem;width:40%}.skeleton--line{margin-top:.8rem;height:.9rem;width:100%}.app-panel{width:100%}.title-stack p{margin:.85rem 0 0;color:var(--muted);max-width:52rem}.app-header{align-items:center}.app-grid{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:1.2rem}.inner-surface{border-radius:1.35rem;background:#ffffff6b;padding:1rem;box-shadow:none}.dark .inner-surface{background:#ffffff0a}.answer-surface{min-height:18rem}.answer-block{min-height:12rem;border-radius:1.2rem;border:1px solid var(--border);background:var(--surface-strong);padding:1rem 1.05rem;box-shadow:inset 0 1px #ffffff1a;overflow:auto}.answer-block p{margin:0;white-space:pre-wrap;color:var(--text)}.empty-state{border:1px dashed var(--border);border-radius:1rem;padding:1rem;color:var(--muted);background:#ffffff08}.history-list,.source-list{display:grid;gap:.75rem}.history-item,.source-card{border:1px solid var(--border);background:var(--surface-strong);border-radius:1rem;padding:.95rem 1rem}.history-item{display:grid;gap:.35rem}.history-item__meta,.source-card__meta,.source-card__details,.panel-meta{color:var(--muted)}.history-item__meta{font-size:.8rem}.history-item__question{font-weight:700}.history-item__answer{color:var(--text);opacity:.88;font-size:.94rem}.history-item__mode{color:var(--muted);font-size:.8rem}.history-item__sources{display:flex;flex-wrap:wrap;gap:.45rem;margin-top:.2rem}.llm-input{display:grid;gap:.85rem}.llm-input__meta{display:flex;flex-wrap:wrap;gap:.5rem}.llm-input__messages{display:grid;gap:.75rem}.llm-message-card{border:1px solid var(--border);border-radius:.85rem;background:#ffffff08;padding:.72rem .8rem}.llm-message-card__role{color:var(--muted);font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em}.llm-message-card__content{margin:.55rem 0 0;white-space:pre-wrap;overflow-wrap:anywhere;font-size:.88rem;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;color:var(--text)}.source-card__header{display:flex;align-items:start;justify-content:space-between;gap:.8rem}.source-card__title{font-weight:700}.source-card__details{margin-top:.4rem;font-size:.88rem}.source-card__badge{min-width:2rem;min-height:2rem;padding:0 .55rem;color:var(--text)}.prompt-row{gap:.5rem}.prompt-chip{padding:.8rem .9rem;font-size:.88rem;text-align:left}.app-left,.app-right{align-content:start}.api-docs{display:grid;gap:.85rem}.api-docs__intro{margin:0;color:var(--muted)}.api-docs h3{margin:.1rem 0 0;font-size:.96rem}.api-docs code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,monospace;font-size:.86rem}.api-docs pre{margin:0;border:1px solid var(--border);border-radius:.9rem;background:var(--surface-strong);padding:.75rem .85rem;overflow:auto}.api-docs__steps{margin:0;padding-left:1.2rem;display:grid;gap:.3rem}.api-docs__table-wrap{overflow:auto;border:1px solid var(--border);border-radius:.9rem}.api-docs__table{width:100%;border-collapse:collapse;min-width:620px}.api-docs__table th,.api-docs__table td{text-align:left;border-bottom:1px solid var(--border);padding:.62rem .72rem;vertical-align:top}.api-docs__table th{font-size:.8rem;letter-spacing:.03em;text-transform:uppercase;color:var(--muted)}.api-docs__table tbody tr:last-child td{border-bottom:0}@keyframes fade-up{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}@media(max-width:960px){.login-shell,.app-grid{grid-template-columns:1fr}.login-shell{min-height:auto;padding-top:2rem;padding-bottom:2rem}.app-shell,.loading-shell{min-height:auto}}@media(max-width:640px){.shell{width:min(100%,calc(100% - 1rem));padding:.8rem 0 1rem}.panel-header,.panel-body{padding-left:1rem;padding-right:1rem}.hero-copy h1,.panel-header h1{font-size:clamp(2rem,11vw,2.8rem)}.login-shell .login-panel{min-height:0}.header-actions,.page-toolbar{width:100%;justify-content:space-between}.secondary-button,.primary-button,.icon-button,.prompt-chip{width:100%;justify-content:center}}