.s3ai-root{--s3ai-accent:#357AB3;--s3ai-accent-dark:#2B6391;--s3ai-navy:#1A2633;--s3ai-bg:#F0F5FB;--s3ai-border:#B8C0CC;--s3ai-ink:#0D141A;position:fixed;right:24px;bottom:24px;z-index:99990;font-family:'DM Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Arial,sans-serif;font-size:16px;line-height:1.5;color:var(--s3ai-ink)}
.s3ai-root *,.s3ai-root *::before,.s3ai-root *::after{box-sizing:border-box}
.s3ai-sr{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.s3ai-bubble{display:flex;align-items:center;justify-content:center;width:60px;height:60px;padding:0;border:0;border-radius:50%;background:var(--s3ai-accent);color:#fff;cursor:pointer;box-shadow:0 8px 24px rgba(26,38,51,.28);transition:transform .25s ease,background-color .25s ease,box-shadow .25s ease,opacity .25s ease}
.s3ai-bubble:hover{background:var(--s3ai-accent-dark);transform:translateY(-2px);box-shadow:0 12px 28px rgba(26,38,51,.34)}
.s3ai-bubble:focus-visible,.s3ai-close:focus-visible,.s3ai-send:focus-visible{outline:3px solid var(--s3ai-navy);outline-offset:2px}

.s3ai-panel{position:absolute;right:0;bottom:76px;display:flex;flex-direction:column;width:380px;max-width:calc(100vw - 32px);height:min(560px,calc(100vh - 140px));background:#fff;border:1px solid var(--s3ai-border);border-radius:14px;box-shadow:0 20px 50px rgba(26,38,51,.25);overflow:hidden;opacity:0;visibility:hidden;transform:translateY(16px) scale(.98);transform-origin:bottom right;transition:opacity .25s ease,transform .25s ease,visibility 0s linear .25s}
.s3ai-panel.is-open{opacity:1;visibility:visible;transform:none;transition:opacity .25s ease,transform .25s ease,visibility 0s}

.s3ai-header{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 12px 14px 18px;background:var(--s3ai-navy);color:#fff}
.s3ai-header-main{display:flex;align-items:center;gap:12px;min-width:0}
.s3ai-avatar{display:flex;align-items:center;justify-content:center;flex:0 0 38px;width:38px;height:38px;border-radius:50%;background:var(--s3ai-accent);font-weight:700;font-size:14px;letter-spacing:.3px}
.s3ai-title{font-family:'Montserrat','DM Sans',sans-serif;font-weight:700;font-size:16px;line-height:1.2}
.s3ai-sub{font-size:13px;opacity:.8}
.s3ai-close{display:flex;align-items:center;justify-content:center;flex:0 0 44px;width:44px;height:44px;padding:0;border:0;border-radius:8px;background:transparent;color:#fff;font-size:30px;line-height:1;cursor:pointer;transition:background-color .2s ease}
.s3ai-close:hover{background:rgba(255,255,255,.14)}
.s3ai-close:focus-visible{outline-color:#fff}

.s3ai-log{flex:1 1 auto;display:flex;flex-direction:column;gap:10px;padding:16px;overflow-y:auto;background:var(--s3ai-bg);-webkit-overflow-scrolling:touch;overscroll-behavior:contain}
.s3ai-msg{max-width:86%;padding:10px 14px;border-radius:14px;font-size:15px;line-height:1.5;overflow-wrap:anywhere;white-space:pre-wrap}
.s3ai-msg--bot{align-self:flex-start;background:#fff;border:1px solid var(--s3ai-border);border-bottom-left-radius:4px}
.s3ai-msg--user{align-self:flex-end;background:var(--s3ai-accent);color:#fff;border-bottom-right-radius:4px}
.s3ai-typing{display:flex;align-items:center;gap:5px;padding:14px 16px}
.s3ai-typing span{width:7px;height:7px;border-radius:50%;background:var(--s3ai-border);animation:s3ai-bounce 1s infinite ease-in-out}
.s3ai-typing span:nth-child(2){animation-delay:.15s}
.s3ai-typing span:nth-child(3){animation-delay:.3s}
@keyframes s3ai-bounce{0%,80%,100%{transform:translateY(0);opacity:.5}40%{transform:translateY(-5px);opacity:1}}

.s3ai-form{display:flex;align-items:center;gap:8px;padding:12px;background:#fff;border-top:1px solid var(--s3ai-border)}
.s3ai-input{flex:1 1 auto;min-width:0;height:48px;padding:0 14px;border:1px solid var(--s3ai-border);border-radius:10px;background:#fff;color:var(--s3ai-ink);font-family:inherit;font-size:16px;transition:border-color .2s ease,box-shadow .2s ease}
.s3ai-input:focus{outline:0;border-color:var(--s3ai-accent);box-shadow:0 0 0 3px rgba(53,122,179,.2)}
.s3ai-send{display:flex;align-items:center;justify-content:center;flex:0 0 48px;width:48px;height:48px;padding:0;border:0;border-radius:10px;background:var(--s3ai-accent);color:#fff;cursor:pointer;transition:background-color .2s ease,transform .2s ease}
.s3ai-send:hover{background:var(--s3ai-accent-dark);transform:translateY(-1px)}
.s3ai-send:disabled{opacity:.55;cursor:not-allowed;transform:none}

@media (max-width:1024px){
.s3ai-root{right:16px;bottom:16px}
.s3ai-panel{bottom:72px;width:360px;height:min(520px,calc(100vh - 120px))}
}

@media (max-width:767px){
.s3ai-root{right:16px;bottom:calc(16px + env(safe-area-inset-bottom))}
.s3ai-bubble{width:58px;height:58px}
.s3ai-panel{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;max-width:none;height:100vh;height:100dvh;border:0;border-radius:0;transform:translateY(24px)}
.s3ai-header{padding-top:calc(14px + env(safe-area-inset-top))}
.s3ai-form{padding-bottom:calc(12px + env(safe-area-inset-bottom))}
.s3ai-msg{max-width:90%;font-size:16px}
.s3ai-root.is-open .s3ai-bubble{opacity:0;pointer-events:none;transform:scale(.8)}
body.s3ai-lock{overflow:hidden}
}

@media (prefers-reduced-motion:reduce){
.s3ai-bubble,.s3ai-panel,.s3ai-panel.is-open,.s3ai-send,.s3ai-close,.s3ai-input{transition:none}
.s3ai-typing span{animation:none;opacity:.8}
}
/* locked state */
.s3ai-input:disabled{background:var(--s3ai-bg);color:#5b6672;cursor:not-allowed}
.s3ai-root.is-locked .s3ai-form{opacity:.85}