/* Smart Assistant (beta) — Thakur British Academy */
.tba-as-fab{position:fixed;left:14px;bottom:84px;z-index:140;width:58px;height:58px;border-radius:50%;border:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0;cursor:pointer;color:#1a1200;background:linear-gradient(145deg,#ffdf7e,#ffc928 55%,#e0a800);box-shadow:0 10px 28px rgba(0,0,0,.4),0 0 0 3px rgba(255,201,40,.25);font:800 10px/1 system-ui,sans-serif;letter-spacing:.04em;text-transform:uppercase;transition:transform .2s,box-shadow .2s;animation:tbaAsPulse 2.8s ease-in-out 1.5s 3}
.tba-as-fab svg{width:26px;height:26px;margin-bottom:1px}
.tba-as-fab:hover{transform:translateY(-2px) scale(1.05)}
.tba-as-fab:focus-visible{outline:3px solid #fff;outline-offset:3px}
.tba-as-open .tba-as-fab{opacity:0;pointer-events:none}
@keyframes tbaAsPulse{50%{box-shadow:0 10px 28px rgba(0,0,0,.4),0 0 0 12px rgba(255,201,40,0)}}
.tba-as-panel{--as-bg:#0d1535;--as-ink:#eef1ff;--as-mute:#a9b2d6;--as-line:rgba(255,255,255,.12);--as-bot:rgba(255,255,255,.07);position:fixed;left:0;right:0;bottom:0;z-index:150;height:min(86vh,640px);height:min(86dvh,640px);display:flex;flex-direction:column;background:var(--as-bg);color:var(--as-ink);border:1px solid var(--as-line);border-bottom:0;border-radius:22px 22px 0 0;box-shadow:0 -20px 60px rgba(0,0,0,.5);font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Noto Sans Devanagari",sans-serif;font-size:15px;line-height:1.45;opacity:0;transform:translateY(24px);transition:opacity .22s,transform .22s;overflow:hidden;max-width:100vw}
.tba-as-panel.on{opacity:1;transform:none}
.tba-as-panel[hidden]{display:none}
html[data-theme="light"] .tba-as-panel{--as-bg:#fffdf7;--as-ink:#141a33;--as-mute:#4f5677;--as-line:rgba(20,26,51,.14);--as-bot:#f1ece0;box-shadow:0 -14px 40px rgba(20,26,51,.18)}
.tba-as-head{display:flex;align-items:center;gap:10px;padding:12px 12px 12px 14px;border-bottom:1px solid var(--as-line);background:linear-gradient(90deg,rgba(255,201,40,.14),transparent)}
.tba-as-head img{width:36px;height:36px;border-radius:50%;object-fit:cover;box-shadow:0 0 0 2px #ffc928;flex:none}
.tba-as-head div{flex:1;min-width:0}
.tba-as-head b{display:block;font-size:15px}.tba-as-head em{font-style:normal;color:#ffc928;font-weight:700;font-size:12px}
html[data-theme="light"] .tba-as-head em{color:#b8860b}
.tba-as-head small{display:block;color:var(--as-mute);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tba-as-x{width:40px;height:40px;border-radius:50%;border:1px solid var(--as-line);background:transparent;color:var(--as-ink);font-size:16px;cursor:pointer;flex:none}
.tba-as-log{flex:1;overflow-y:auto;overflow-x:hidden;padding:14px 12px;display:flex;flex-direction:column;gap:8px;overscroll-behavior:contain;scroll-behavior:smooth}
.tba-as-msg{display:flex;max-width:100%}
.tba-as-me{justify-content:flex-end}
.tba-as-bub{max-width:86%;padding:9px 12px;border-radius:16px;overflow-wrap:anywhere;animation:tbaAsIn .25s ease}
.tba-as-bot .tba-as-bub{background:var(--as-bot);border:1px solid var(--as-line);border-bottom-left-radius:5px}
.tba-as-me .tba-as-bub{background:linear-gradient(145deg,#ffd65a,#ffc928);color:#1a1200;border-bottom-right-radius:5px;font-weight:600}
.tba-as-bub ul{margin:6px 0;padding-left:18px}.tba-as-bub li{margin:2px 0}
.tba-as-bub small{color:var(--as-mute)}
.tba-as-s{color:var(--as-mute);font-size:12px}
@keyframes tbaAsIn{from{opacity:0;transform:translateY(6px)}}
.tba-as-acts{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.tba-as-ab{display:inline-flex;align-items:center;padding:6px 11px;border-radius:999px;font-size:13px;font-weight:700;text-decoration:none;border:1px solid var(--as-line);color:var(--as-ink);background:rgba(255,201,40,.12)}
.tba-as-ab:hover{background:rgba(255,201,40,.25)}
.tba-as-wa{background:#1faa59;border-color:#1faa59;color:#fff}.tba-as-call{background:#e8262c;border-color:#e8262c;color:#fff}
.tba-as-typing .tba-as-bub{display:flex;gap:4px;padding:12px 14px}
.tba-as-typing i{width:7px;height:7px;border-radius:50%;background:var(--as-mute);animation:tbaAsDot 1s infinite}
.tba-as-typing i:nth-child(2){animation-delay:.15s}.tba-as-typing i:nth-child(3){animation-delay:.3s}
@keyframes tbaAsDot{0%,80%,100%{opacity:.3;transform:none}40%{opacity:1;transform:translateY(-4px)}}
.tba-as-chips{display:flex;gap:6px;overflow-x:auto;padding:8px 12px;border-top:1px solid var(--as-line);scrollbar-width:none}
.tba-as-chips::-webkit-scrollbar{display:none}
.tba-as-chips button{flex:none;padding:7px 12px;border-radius:999px;border:1px solid rgba(255,201,40,.45);background:transparent;color:var(--as-ink);font:600 13px system-ui,sans-serif;cursor:pointer;white-space:nowrap}
.tba-as-chips button:hover{background:rgba(255,201,40,.15)}
.tba-as-form{display:flex;gap:8px;padding:8px 12px calc(8px + env(safe-area-inset-bottom))}
.tba-as-form input{flex:1;min-width:0;font-size:16px;padding:11px 14px;border-radius:999px;border:1px solid var(--as-line);background:var(--as-bot);color:var(--as-ink);outline:0}
.tba-as-form input:focus{border-color:#ffc928;box-shadow:0 0 0 3px rgba(255,201,40,.25)}
.tba-as-form button{flex:none;width:46px;height:46px;border-radius:50%;border:0;background:#ffc928;color:#1a1200;font-size:18px;cursor:pointer}
.tba-as-foot{margin:0;padding:0 12px 8px;font-size:11px;color:var(--as-mute);text-align:center}
.tba-as-foot a{color:inherit}
.tba-as-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.tba-as-panel :focus-visible{outline:2px solid #ffc928;outline-offset:2px}
@media (max-width:759px){.tba-as-open body{overflow:hidden}}
@media (min-width:760px){
.tba-as-fab{left:22px;bottom:22px;width:62px;height:62px}
.tba-as-panel{left:22px;right:auto;bottom:22px;width:380px;height:min(600px,calc(100vh - 44px));border-radius:22px;border-bottom:1px solid var(--as-line);box-shadow:0 24px 70px rgba(0,0,0,.5)}
}
@media (prefers-reduced-motion:reduce){.tba-as-fab,.tba-as-panel,.tba-as-bub,.tba-as-typing i{animation:none!important;transition:none!important}}
@media print{.tba-as-fab,.tba-as-panel{display:none!important}}