.chat-nadia{position:fixed;right:18px;bottom:18px;z-index:2140;font-family:Inter,Arial,sans-serif}
.chat-nadia__fab{position:relative;display:flex;align-items:center;gap:10px;border:0;background:#0f172a;color:#fff;padding:8px 14px 8px 8px;border-radius:999px;box-shadow:0 16px 30px rgba(0,0,0,.22);cursor:pointer;animation:nadia-bounce 6.5s ease-in-out infinite}
.chat-nadia__fab::after{content:'';position:absolute;inset:-4px;border-radius:999px;border:2px solid rgba(37,99,235,.45);animation:nadia-ping 2.6s ease-out infinite;pointer-events:none}
.chat-nadia__avatar-wrap{position:relative;display:inline-flex}
.chat-nadia__avatar{width:40px;height:40px;border-radius:50%;object-fit:cover;background:#e5e7eb;display:inline-flex;align-items:center;justify-content:center;overflow:hidden}
.chat-nadia__avatar--svg{background:#111827}
.chat-nadia__avatar--svg svg{width:28px;height:28px}
.chat-nadia__online{position:absolute;right:0;bottom:0;width:11px;height:11px;border-radius:50%;background:#22c55e;border:2px solid #fff;box-shadow:0 0 0 0 rgba(34,197,94,.6);animation:nadia-online 2.2s ease-out infinite}
.chat-nadia__fab-text{font-weight:700;font-size:14px}
.chat-nadia__unread{position:absolute;top:-6px;right:-4px;min-width:18px;height:18px;padding:0 5px;border-radius:999px;background:#ef4444;color:#fff;font-size:11px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;box-shadow:0 8px 14px rgba(239,68,68,.35)}
.chat-nadia__teaser{position:absolute;right:0;bottom:64px;width:240px;padding:12px 14px;border:0;border-radius:14px;background:#fff;color:#0f172a;text-align:left;box-shadow:0 14px 25px rgba(15,23,42,.18);cursor:pointer}
.chat-nadia__typing{display:inline-flex;gap:4px;margin-left:8px}
.chat-nadia__typing span{width:6px;height:6px;border-radius:50%;background:#64748b;animation:nadia-dot 1.2s infinite ease-in-out}
.chat-nadia__typing span:nth-child(2){animation-delay:.2s}.chat-nadia__typing span:nth-child(3){animation-delay:.4s}

.chat-nadia__panel[hidden],.chat-nadia__teaser[hidden]{display:none!important}
.chat-nadia__panel{position:absolute;right:0;bottom:0;width:min(390px,calc(100vw - 20px));height:min(400px,70vh);min-height:400px;background:#fff;border-radius:18px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 26px 38px rgba(2,6,23,.28)}
.chat-nadia__header{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;background:#0f172a;color:#fff}
.chat-nadia__identity{display:flex;gap:10px;align-items:center}.chat-nadia__identity small{display:block;opacity:.8}
.chat-nadia__close{font-size:24px;line-height:1;border:0;background:transparent;color:#fff;cursor:pointer}
.chat-nadia__messages{flex:1;overflow:auto;padding:12px;background:#f8fafc;display:flex;flex-direction:column;gap:10px}
.chat-nadia__msg{max-width:85%;padding:9px 11px;border-radius:14px;white-space:pre-wrap;word-break:break-word}
.chat-nadia__msg--assistant{align-self:flex-start;background:#fff;border:1px solid #e2e8f0}
.chat-nadia__msg--user{align-self:flex-end;background:#2563eb;color:#fff}
.chat-nadia__typing-row{padding:6px 12px;font-size:13px;color:#475569;background:#eef2ff}
.chat-nadia__footer{border-top:1px solid #e2e8f0;padding:10px;background:#fff}
.chat-nadia__footer textarea{width:100%;resize:none;border:1px solid #cbd5e1;border-radius:12px;padding:9px 10px;font:inherit;min-height:42px;max-height:120px}
.chat-nadia__footer-actions{margin-top:8px;display:flex;justify-content:space-between;gap:8px;align-items:center}
.chat-nadia__wa-link{font-size:12px;color:#0f766e;text-decoration:none}
.chat-nadia__send{border:0;background:#2563eb;color:#fff;border-radius:10px;padding:8px 12px;font-weight:700;cursor:pointer}

@keyframes nadia-dot{0%,80%,100%{transform:scale(.7);opacity:.4}40%{transform:scale(1);opacity:1}}
@keyframes nadia-bounce{0%,100%{transform:translateY(0)}3%{transform:translateY(-4px)}6%{transform:translateY(0)}}
@keyframes nadia-ping{0%{opacity:.8;transform:scale(.95)}70%{opacity:0;transform:scale(1.18)}100%{opacity:0;transform:scale(1.18)}}
@keyframes nadia-online{0%{box-shadow:0 0 0 0 rgba(34,197,94,.55)}100%{box-shadow:0 0 0 8px rgba(34,197,94,0)}}
@media (max-width:768px){.chat-nadia{right:12px;bottom:12px}.chat-nadia__fab-text{display:none}.chat-nadia__panel{width:min(90vw,400px);height:min(460px,68vh);min-height:400px}}
@media (prefers-reduced-motion:reduce){.chat-nadia__fab,.chat-nadia__fab::after,.chat-nadia__online,.chat-nadia__typing span{animation:none!important}}

.chat-nadia__backdrop{position:fixed;inset:0;background:rgba(15,23,42,.45);z-index:2139;touch-action:none}
.chat-nadia--locked{overflow:hidden;touch-action:none}