:root{--font: "Ubuntu", system-ui, -apple-system, "Segoe UI", sans-serif;--bg: #eef4fb;--surface: #ffffff;--surface-sunk: #f4f7fb;--ink: #16202c;--ink-soft: #4a5a6b;--line: #c9d5e2;--accent: #1c4fa1;--accent-dark: #143a79;--user-bubble: #1c4fa1;--user-ink: #ffffff;--bot-bubble: #f4f7fb;--bot-ink: #16202c;--radius: 12px;--focus: 3px solid #d2691e;--shadow: 0 6px 24px rgb(20 32 44 / 12%)}:root[data-theme=dark]{--bg: #0d1219;--surface: #151d27;--surface-sunk: #1b2530;--ink: #e8eef5;--ink-soft: #a7b6c6;--line: #2c3a49;--accent: #6da2f5;--accent-dark: #4b84d8;--user-bubble: #2a5fae;--user-ink: #ffffff;--bot-bubble: #1b2530;--bot-ink: #e8eef5;--shadow: 0 6px 24px rgb(0 0 0 / 45%)}*,*:before,*:after{box-sizing:border-box}body{margin:0;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem 1rem;font-family:var(--font);font-size:1.05rem;line-height:1.6;color:var(--ink);background:var(--bg)}:focus-visible{outline:var(--focus);outline-offset:2px;border-radius:4px}.skip-link{position:absolute;left:-9999px;top:0;padding:.75rem 1.25rem;background:var(--accent-dark);color:#fff;font-weight:700;z-index:10}.skip-link:focus{left:0}.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.app{width:min(52rem,100%);height:min(46rem,88vh);display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.app-header{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;justify-content:space-between;padding:.9rem 1.25rem;background:var(--accent);color:#fff}.app-header h1{margin:0;font-size:1.4rem;letter-spacing:.01em}.controls{display:flex;gap:.5rem;flex-wrap:wrap}.controls button{min-height:2.5rem;padding:.35rem .9rem;font:inherit;font-size:.95rem;font-weight:600;color:#fff;background:transparent;border:2px solid rgb(255 255 255 / 55%);border-radius:var(--radius);cursor:pointer}.controls button:hover{background:#ffffff26;border-color:#fff}.controls button[aria-pressed=true]{background:#fff;color:var(--accent-dark);border-color:#fff}.transcript{flex:1;overflow-y:auto;padding:1.25rem;display:flex;flex-direction:column;gap:.85rem;background:var(--surface)}.msg{max-width:85%;padding:.85rem 1.1rem;border-radius:var(--radius);overflow-wrap:anywhere}.msg>:first-child{margin-top:0}.msg>:last-child{margin-bottom:0}.msg--user{align-self:flex-end;background:var(--user-bubble);color:var(--user-ink)}.msg--bot{align-self:flex-start;background:var(--bot-bubble);color:var(--bot-ink);border:1px solid var(--line)}.answer-heading{margin:0 0 .5rem;font-size:1.15rem}.answer-subheading{margin:.9rem 0 .35rem;font-size:1rem}.answer-text{margin:0 0 .6rem}.answer-list{margin:.3rem 0 .6rem;padding-left:1.3rem}.answer-list li{margin-bottom:.2rem}.answer-facts{display:grid;grid-template-columns:auto 1fr;gap:.2rem 1rem;margin:0 0 .6rem}.answer-facts dt{font-weight:700;color:var(--ink-soft)}.msg--bot .answer-facts dt{color:var(--ink-soft)}.answer-facts dd{margin:0}.answer-link{color:var(--accent);font-weight:600}.suggestions{display:flex;flex-wrap:wrap;gap:.5rem;padding:.75rem 1.25rem 0;background:var(--surface-sunk);border-top:1px solid var(--line)}.chip{min-height:2.25rem;padding:.3rem .8rem;font:inherit;font-size:.9rem;color:var(--accent);background:var(--surface);border:1px solid var(--line);border-radius:999px;cursor:pointer}.chip:hover{border-color:var(--accent);background:var(--bg)}.composer{display:flex;gap:.6rem;padding:.85rem 1.25rem;background:var(--surface-sunk)}.composer input{flex:1;min-height:3rem;padding:.6rem .9rem;font:inherit;color:var(--ink);background:var(--surface);border:2px solid var(--line);border-radius:var(--radius)}.composer input:hover{border-color:var(--accent)}.composer button{min-height:3rem;padding:.6rem 1.5rem;font:inherit;font-weight:700;color:#fff;background:var(--accent);border:2px solid var(--accent-dark);border-radius:var(--radius);cursor:pointer}.composer button:hover{background:var(--accent-dark)}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}@media (max-width: 34rem){body{padding:0}.app{height:100vh;border-radius:0;border:0}.msg{max-width:95%}}