:root{ --accent:#71be44; --bg:#fff; --text:#0f172a; --muted:#64748b; --border:#e2e8f0; --shadow:0 10px 20px rgba(2,6,23,.10),0 3px 6px rgba(2,6,23,.08); }
*{box-sizing:border-box}
.wcchat-launcher{position:fixed;right:24px;bottom:24px;width:66px;height:66px;border:0;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow);cursor:pointer;z-index:9999}
.wcchat-launcher svg{width:28px;height:28px}
.wcchat-win{position:fixed;right:24px;bottom:108px;width:392px;max-width:calc(100vw - 32px);background:#fff;border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow);overflow:hidden;transform:scale(.98) translateY(8px);opacity:0;pointer-events:none;transition:.2s;z-index:9999}
.wcchat-win.open{opacity:1;pointer-events:auto;transform:scale(1) translateY(0)}
.wcchat-head{display:flex;gap:10px;align-items:center;padding:12px 14px;background:var(--accent);color:#fff}
.wcchat-head video{width:50px;height:50px;border-radius:50%;object-fit:cover}
.wcchat-spacer{flex:1}
.wcchat-x{background:rgba(0,0,0,.15);border:0;color:#fff;width:32px;height:32px;border-radius:8px;display:grid;place-items:center;cursor:pointer}
.wcchat-body{background:#f8fafc;max-height:62vh;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:10px}
.wcchat-msg{display:flex;gap:10px;align-items:flex-end}
.wcchat-msg .avatar video{width:30px;height:30px;border-radius:50%;object-fit:cover}
.wcchat-msg .bubble{padding:10px 12px;border-radius:14px;max-width:78%;border:1px solid var(--border);background:#fff}
.wcchat-me{justify-content:flex-end}
.wcchat-me .bubble{background:#e8f9ef;border-color:#bbf7d0}
.wcchat-time{font-size:11px;color:var(--muted);margin-top:4px}
.wcchat-input{border-top:1px solid var(--border);background:#fff;padding:10px;display:flex;gap:8px;align-items:center}
.wcchat-input input{flex:1;height:42px;border:1px solid var(--border);border-radius:12px;padding:0 12px;font:inherit}
.wcchat-input input:disabled{background:#f8fafc;color:#94a3b8;cursor:not-allowed}
.wcchat-send{height:42px;padding:0 14px;border-radius:12px;border:0;background:var(--accent);color:#fff;font-weight:600}
.wcchat-send:disabled{background:#cbd5e1;cursor:not-allowed}
.wcchat-typing{display:flex;gap:10px;align-items:flex-end}
.wcchat-typing .avatar video{width:30px;height:30px;border-radius:50%;object-fit:cover}
.wcchat-typing .dots{display:inline-flex;gap:4px;padding:8px 12px;border:1px solid var(--border);background:#fff;border-radius:14px}
.wcchat-dot{width:6px;height:6px;border-radius:50%;background:#9ca3af;animation:bounce 1.2s infinite}
.wcchat-dot:nth-child(2){animation-delay:.15s}
.wcchat-dot:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,80%,100%{transform:translateY(0);opacity:.6}40%{transform:translateY(-5px);opacity:1}}