/* RTEC MASTER — RTEC AI chat on the public website (same widget as the SiteOS AI assistant for visitors). */
.rtec-chat{position:fixed;right:16px;bottom:16px;z-index:9990;font:15px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.rtec-chat-btn{display:flex;align-items:center;gap:8px;border:0;border-radius:999px;padding:12px 18px;background:var(--chat-color);color:#fff;font:inherit;font-weight:600;cursor:pointer;box-shadow:0 6px 20px rgba(0,0,0,.2)}
.rtec-chat-btn:focus-visible,.rtec-chat-panel button:focus-visible{outline:3px solid #ffbf47;outline-offset:2px}
.rtec-chat.is-open .rtec-chat-btn{display:none}
.rtec-chat-panel{width:360px;max-width:calc(100vw - 32px);height:520px;max-height:calc(100vh - 32px);background:#fff;color:#1d2433;border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.25);display:flex;flex-direction:column;overflow:hidden}
.rtec-chat-panel[hidden]{display:none}
.rtec-chat-head{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;background:var(--chat-color);color:#fff}
.rtec-chat-x{border:0;background:transparent;color:#fff;font-size:24px;line-height:1;cursor:pointer;padding:0 4px}
.rtec-chat-log{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px;background:#f6f7f9}
.rtec-chat-msg{max-width:85%;padding:8px 12px;border-radius:12px;white-space:pre-wrap;overflow-wrap:anywhere}
.rtec-chat-assistant{align-self:flex-start;background:#fff;border:1px solid #e3e6ec}.rtec-chat-visitor{align-self:flex-end;background:var(--chat-color);color:#fff}
.rtec-chat-msg a{color:inherit;text-decoration:underline}.rtec-chat-error{border-color:#f0b4ad;color:#a8261b}.rtec-chat-wait{opacity:.6}
.rtec-chat-form{display:flex;gap:8px;padding:10px;border-top:1px solid #e3e6ec;background:#fff}
.rtec-chat-form textarea{flex:1;resize:none;border:1px solid #cfd4de;border-radius:8px;padding:8px 10px;font:inherit;max-height:120px}
.rtec-chat-form button{border:0;border-radius:8px;padding:0 14px;background:var(--chat-color);color:#fff;font:inherit;font-weight:600;cursor:pointer}
.rtec-chat-form button:disabled{opacity:.5}
@media (max-width:480px){.rtec-chat.is-open{left:0;right:0;bottom:0;top:0}.rtec-chat-panel{width:100%;max-width:none;height:100%;max-height:none;border-radius:0}}