*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",sans-serif;background:#eef2f6;color:#0f172a}
.hidden{display:none!important}
.app{max-width:560px;margin:0 auto;height:100dvh;display:flex;flex-direction:column;background:#fff;box-shadow:0 0 24px rgba(0,0,0,.08)}
.top{display:flex;align-items:center;gap:10px;padding:10px 14px;background:var(--brand);color:#fff}
.top .logo{height:38px;width:auto;border-radius:6px;background:#fff;padding:2px}
.ttl{flex:1;min-width:0}
.ttl h1{font-size:17px;margin:0}
.status{font-size:12px;opacity:.9}
button{font:inherit;cursor:pointer;border:0;border-radius:10px;padding:10px 14px;background:var(--brand);color:#fff;font-weight:600}
button:disabled{opacity:.6}
button.ghost{background:rgba(255,255,255,.18);color:inherit;padding:8px 12px}
.composer button.ghost{background:#f1f5f9;color:#334155}
input{font:inherit;width:100%;padding:12px;border:1px solid #cbd5e1;border-radius:10px;outline:none}
input:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 20%,transparent)}
.start{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;text-align:center}
.logo-big{max-height:90px;max-width:220px;margin-bottom:8px}
.start h2{margin:6px 0}
.start p{color:#475569;margin:0 0 16px}
.start form{width:100%;max-width:340px;display:flex;flex-direction:column;gap:10px}
.err{color:#dc2626;font-size:13px;min-height:1em}
.err.pad{padding:0 12px 6px}
.chat{flex:1;display:flex;flex-direction:column;min-height:0}
.msgs{flex:1;overflow-y:auto;padding:14px;background:#f8fafc;display:flex;flex-direction:column;gap:8px}
.msg{max-width:82%;padding:8px 11px;border-radius:12px;background:#fff;border:1px solid #e2e8f0;align-self:flex-start;word-wrap:break-word}
.msg.me{align-self:flex-end;background:color-mix(in srgb,var(--brand) 14%,#fff);border-color:color-mix(in srgb,var(--brand) 30%,#fff)}
.msg.bot{background:#fefce8;border-color:#fde68a}
.msg .who{font-size:11px;font-weight:700;color:var(--brand);margin-bottom:2px}
.msg .txt{white-space:pre-wrap}
.msg img{max-width:100%;max-height:260px;border-radius:8px;display:block}
.msg .time{font-size:10.5px;color:#64748b;text-align:right;margin-top:3px}
.menu{display:flex;flex-wrap:wrap;gap:6px;padding:8px 12px;border-top:1px solid #e2e8f0;background:#fff}
.chip{background:#fff;color:var(--brand);border:1.5px solid var(--brand);padding:7px 11px;border-radius:999px;font-size:13.5px}
.composer{display:flex;gap:6px;padding:8px 10px;border-top:1px solid #e2e8f0;align-items:center;padding-bottom:max(8px,env(safe-area-inset-bottom))}
.composer input{padding:10px}
.attach{font-size:20px;cursor:pointer;padding:4px}
@media (max-width:560px){.app{box-shadow:none}}
.wa-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;max-width:340px;padding:11px 14px;border-radius:10px;background:#25D366;color:#fff;font-weight:700;text-decoration:none}
.wa-btn:hover{background:#1ebe5a}
.or{color:#94a3b8;font-size:13px;margin:12px 0 8px}
.wa-top{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:#25D366;color:#fff}
.wa-box{display:flex;flex-direction:column;gap:8px;align-items:center;text-align:center;padding:10px 12px;background:#f0fdf4;border-top:1px solid #bbf7d0;font-size:13.5px;color:#14532d}
.wa-box .wa-btn{max-width:none}