*{box-sizing:border-box;margin:0;padding:0}:root{--bg: #f7f5f0;--surface: #ffffff;--ink: #23211c;--muted: #8a8477;--accent: #c2571f;--accent-soft: #f6e3d7;--border: #e5e0d5;--radius: 14px}html,body,#app{height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}.picker{max-width:680px;margin:0 auto;padding:48px 20px 64px}.picker-header h1{font-family:Georgia,Times New Roman,serif;font-size:2rem;margin-bottom:12px}.picker-header p{color:var(--muted);line-height:1.5;margin-bottom:32px;max-width:46ch}.picker-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}.topic-card{display:flex;flex-direction:column;gap:6px;text-align:left;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 16px;cursor:pointer;font:inherit;color:inherit;transition:border-color .15s,transform .15s,box-shadow .15s}.topic-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 6px 18px #23211c12}.topic-name{font-weight:600;font-size:1.05rem}.topic-subtitle{color:var(--accent);font-size:.8rem;text-transform:uppercase;letter-spacing:.06em}.topic-description{color:var(--muted);font-size:.88rem;line-height:1.4}.chat{display:flex;flex-direction:column;height:100%;max-width:680px;margin:0 auto}.chat-header{display:flex;align-items:center;gap:12px;padding:14px 16px;border-bottom:1px solid var(--border);background:var(--bg)}.back-button{border:1px solid var(--border);background:var(--surface);color:var(--ink);border-radius:50%;width:34px;height:34px;font-size:1rem;cursor:pointer}.chat-title{display:flex;flex-direction:column}.chat-topic{font-weight:600}.messages{flex:1;overflow-y:auto;padding:20px 16px;display:flex;flex-direction:column;gap:10px}.bubble{max-width:85%;padding:11px 15px;border-radius:var(--radius);line-height:1.45;white-space:pre-wrap}.bubble.assistant{align-self:flex-start;background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:4px}.bubble.user{align-self:flex-end;background:var(--accent);color:#fff;border-bottom-right-radius:4px}.bubble.typing{display:flex;gap:5px;padding:15px}.bubble.typing span{width:7px;height:7px;border-radius:50%;background:var(--muted);animation:pulse 1.2s infinite ease-in-out}.bubble.typing span:nth-child(2){animation-delay:.2s}.bubble.typing span:nth-child(3){animation-delay:.4s}@keyframes pulse{0%,60%,to{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-3px)}}.debug-row{align-self:center;max-width:90%;text-align:center;line-height:1.5;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.72rem;color:var(--muted);background:var(--surface);border:1px dashed var(--border);border-radius:12px;padding:4px 14px;margin:2px 0}.error{align-self:center;color:#a33;font-size:.85rem;padding:8px}.input-bar,.done-bar{display:flex;gap:10px;padding:14px 16px calc(14px + env(safe-area-inset-bottom));border-top:1px solid var(--border);background:var(--bg)}.input-bar input{flex:1;font:inherit;padding:11px 15px;border:1px solid var(--border);border-radius:999px;background:var(--surface);outline:none}.input-bar input:focus{border-color:var(--accent)}button.primary{font:inherit;font-weight:600;color:#fff;background:var(--accent);border:none;border-radius:999px;padding:11px 22px;cursor:pointer}button.primary:disabled{opacity:.45;cursor:default}.done-bar{justify-content:center}