:root{color-scheme:light;--bg:#f5f1ea;--surface:#fffaf1;--surface-strong:#fff6e6;--ink:#20201d;--muted:#6f6a60;--line:#ded4c2;--accent:#2d6a5f;--accent-strong:#174d45;--warm:#a35f2a;--assistant:#ffffff;--user:#e0f0ea;--shadow:0 18px 60px rgba(39,33,22,0.12)}*{box-sizing:border-box}body,html{height:100%}body{margin:0;background:linear-gradient(120deg,rgba(45,106,95,.08),transparent 38%),linear-gradient(240deg,rgba(163,95,42,.12),transparent 34%),var(--bg);color:var(--ink);font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;overflow:hidden}button,textarea{font:inherit}button{border:0}.app-shell{height:100vh;height:100dvh;display:grid;grid-template-rows:auto 1fr;overflow:hidden}.topbar{align-items:center;justify-content:space-between;gap:16px;padding:18px clamp(16px,4vw,42px);border-bottom:1px solid rgba(222,212,194,.72);background:rgba(255,250,241,.78);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px)}.brand,.topbar{display:flex;min-width:0}.brand{flex-direction:column;gap:2px}.birthday-note{margin:0;color:var(--warm);font-size:12px;line-height:1.2;font-weight:600}.brand-title{margin:0;font-size:19px;line-height:1.25;font-weight:760;letter-spacing:0;overflow-wrap:anywhere}.brand-subtitle{margin:0;color:var(--muted);font-size:13px}.status-pill{min-height:34px;display:inline-flex;align-items:center;gap:8px;padding:0 12px;border:1px solid var(--line);border-radius:999px;color:var(--accent-strong);background:rgba(255,255,255,.58);white-space:nowrap;font-size:13px}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--accent)}.chat-wrap{width:min(960px,100%);margin:0 auto;padding:clamp(16px,3vw,28px);display:grid;grid-template-rows:1fr auto;grid-gap:16px;gap:16px;min-height:0;height:100%}.transcript{min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:4px 2px 16px;display:flex;flex-direction:column;gap:14px;scroll-behavior:smooth}.message-row{display:flex;width:100%}.message-row.user{justify-content:flex-end}.message-bubble{width:-moz-fit-content;width:fit-content;max-width:min(720px,88%);padding:12px 14px;border:1px solid var(--line);border-radius:8px;line-height:1.72;white-space:pre-wrap;overflow-wrap:anywhere;box-shadow:0 8px 24px rgba(39,33,22,.06)}.message-row.assistant .message-bubble{background:var(--assistant)}.message-row.user .message-bubble{background:var(--user);border-color:rgba(45,106,95,.22)}.message-meta{margin-bottom:4px;color:var(--muted);font-size:12px;line-height:1.2}.composer{background:rgba(255,250,241,.92);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:12px;display:grid;grid-template-columns:1fr auto;grid-gap:10px;gap:10px;align-items:end}.input{width:100%;min-height:48px;max-height:34dvh;resize:none;border:0;outline:0;border-radius:6px;background:transparent;color:var(--ink);line-height:1.6;padding:7px 2px;overflow-y:auto}.input::placeholder{color:#8b8376}.actions{display:flex;align-items:flex-end;gap:8px}.icon-button{width:42px;height:42px;display:inline-grid;place-items:center;border-radius:8px;color:var(--accent-strong);background:#ffffff;border:1px solid var(--line);cursor:pointer;transition:transform .12s ease,background .12s ease,color .12s ease}.icon-button:hover{transform:translateY(-1px);background:var(--surface-strong)}.icon-button.primary{background:var(--accent);color:white;border-color:var(--accent)}.icon-button.primary:hover{background:var(--accent-strong)}.icon-button:disabled{cursor:not-allowed;opacity:.45;transform:none}.error-line{color:#8b2f20;font-size:13px;padding:0 4px}@media (max-width:640px){.topbar{align-items:flex-start;flex-direction:column;gap:10px;padding:14px 14px 12px}.status-pill{width:100%;justify-content:center}.chat-wrap{padding:10px;gap:10px}.message-bubble{max-width:92%;padding:11px 12px}.composer{grid-template-columns:minmax(0,1fr) auto;padding:10px;gap:8px}.actions{justify-content:flex-end;align-items:flex-end;flex-direction:column;gap:6px}.icon-button{width:40px;height:40px}.input{min-height:72px}}