/* Expert: the AI chat (launcher + panel). Uses the site's tokens, so it follows light and dark mode. */
.ex{position:fixed;right:20px;bottom:20px;z-index:60;font-family:var(--sans)}
.ex-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Launcher */
.ex-launch{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 18px 0 14px;border:0;border-radius:999px;background:#0b1220;color:#fff;font:500 .9375rem/1 var(--sans);cursor:pointer;box-shadow:0 10px 30px -10px rgba(11,18,32,.45),0 0 0 1px rgba(255,255,255,.06) inset;transition:transform .2s var(--ease),box-shadow .2s}
.ex-launch:hover{transform:translateY(-1px);box-shadow:0 14px 34px -12px rgba(11,18,32,.5)}
.ex-launch .ex-spark{color:var(--accent)}
html.dark-mode .ex-launch{background:var(--surface);color:var(--text);box-shadow:0 10px 30px -10px rgba(0,0,0,.7),0 0 0 1px var(--line-strong) inset}
.ex.is-open .ex-launch{opacity:0;pointer-events:none;transform:translateY(6px)}

/* Panel */
.ex-panel{position:absolute;right:0;bottom:0;display:flex;flex-direction:column;width:380px;height:min(620px,calc(100vh - 40px));border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--text);box-shadow:0 30px 60px -20px rgba(11,18,32,.35),0 2px 6px rgba(11,18,32,.06);overflow:hidden;transform-origin:bottom right;animation:ex-in .22s var(--ease)}
.ex-panel[hidden]{display:none}
html.dark-mode .ex-panel{box-shadow:0 30px 60px -20px rgba(0,0,0,.8)}
@keyframes ex-in{from{opacity:0;transform:translateY(8px) scale(.98)}to{opacity:1;transform:none}}

.ex-head{display:flex;align-items:center;gap:10px;padding:14px 12px 14px 16px;border-bottom:1px solid var(--line)}
.ex-avatar{flex:none;display:grid;place-items:center;width:34px;height:34px;border-radius:8px;background:var(--accent-soft);color:var(--accent-text)}
.ex-id{flex:1;min-width:0}
.ex-id h2{margin:0;font-family:var(--display);font-size:1rem;font-weight:600;letter-spacing:-.01em}
.ex-id p{display:flex;align-items:center;gap:6px;margin:1px 0 0;font-size:.75rem;color:var(--muted)}
.ex-dot{width:6px;height:6px;border-radius:50%;background:var(--score)}
.ex-icon{display:grid;place-items:center;width:34px;height:34px;padding:0;border:0;border-radius:6px;background:transparent;color:var(--muted);cursor:pointer;transition:background-color .15s,color .15s}
.ex-icon:hover{background:color-mix(in srgb,var(--text) 6%,transparent);color:var(--text)}

/* Conversation */
.ex-log{flex:1;overflow-y:auto;padding:20px 16px 8px;scroll-behavior:smooth;overscroll-behavior:contain}
.ex-greet{margin:0;font-size:.9375rem;line-height:1.6}
.ex-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.ex-chips button{padding:7px 11px;border:1px solid var(--line);border-radius:999px;background:transparent;color:var(--text);font:500 .8125rem/1.2 var(--sans);cursor:pointer;transition:border-color .15s,background-color .15s}
.ex-chips button:hover{border-color:var(--line-strong);background:color-mix(in srgb,var(--text) 4%,transparent)}
.ex-msg{margin-top:16px;font-size:.9375rem;line-height:1.6;overflow-wrap:anywhere;animation:ex-msg .2s var(--ease)}
@keyframes ex-msg{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.ex-msg p{margin:0 0 .6em}
.ex-msg p:last-child,.ex-msg ul:last-child{margin-bottom:0}
.ex-msg ul{margin:0 0 .6em;padding-left:1.15em}
.ex-msg li{margin-bottom:.25em}
.ex-msg li::marker{color:var(--faint)}
.ex-msg a{color:var(--text);text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:3px}
.ex-msg strong{font-weight:600}
.ex-user{display:flex;justify-content:flex-end}
.ex-user div{max-width:85%;padding:9px 13px;border-radius:14px 14px 4px 14px;background:color-mix(in srgb,var(--text) 7%,transparent);white-space:pre-wrap}
.ex-bot{max-width:94%}
.ex-lead{display:flex;align-items:center;gap:8px;margin-top:10px;padding:8px 10px;border-radius:8px;background:color-mix(in srgb,var(--score) 10%,transparent);color:var(--score);font-size:.8125rem;font-weight:500}
.ex-err{margin-top:14px;padding:10px 12px;border-radius:8px;background:color-mix(in srgb,var(--text) 5%,transparent);color:var(--muted);font-size:.8125rem;line-height:1.5}
.ex-err a{color:var(--text);font-weight:600;text-decoration:underline;text-underline-offset:3px}
.ex-typing{display:inline-flex;gap:4px;margin-top:18px;padding:4px 0}
.ex-typing i{width:6px;height:6px;border-radius:50%;background:var(--faint);animation:ex-dot 1.2s infinite ease-in-out}
.ex-typing i:nth-child(2){animation-delay:.15s}
.ex-typing i:nth-child(3){animation-delay:.3s}
@keyframes ex-dot{0%,60%,100%{opacity:.3;transform:none}30%{opacity:1;transform:translateY(-3px)}}

/* Composer */
.ex-form{display:flex;align-items:flex-end;gap:8px;margin:8px 12px 0;padding:8px 8px 8px 14px;border:1px solid var(--line-strong);border-radius:12px;background:var(--bg);transition:border-color .15s,box-shadow .15s}
.ex-form:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.ex-form textarea{flex:1;min-height:24px;max-height:120px;padding:5px 0;border:0!important;outline:0;background:transparent;color:var(--text);font:400 .9375rem/1.45 var(--sans);resize:none;box-shadow:none!important}
.ex-form textarea::placeholder{color:var(--faint)}
.ex-send{flex:none;display:grid;place-items:center;width:34px;height:34px;padding:0;border:0;border-radius:8px;background:var(--btn-bg);color:var(--btn-fg);cursor:pointer;transition:background-color .15s,opacity .15s}
.ex-send:hover{background:var(--btn-hover)}
.ex-send:disabled{opacity:.35;cursor:default}
.ex-note{margin:0;padding:8px 16px 12px;font-size:.6875rem;line-height:1.4;color:var(--faint);text-align:center}

/* Phones: full-screen sheet */
@media (max-width:560px){
  .ex{right:16px;bottom:16px}
  .ex-launch{height:46px;padding:0 16px 0 13px}
  .ex.is-open{inset:0;right:0;bottom:0}
  .ex-panel{position:fixed;inset:0;width:auto;height:100%;height:100dvh;border:0;border-radius:0;animation:ex-up .25s var(--ease)}
  .ex-form textarea{font-size:16px}
  @keyframes ex-up{from{transform:translateY(24px);opacity:0}to{transform:none;opacity:1}}
}
@media (prefers-reduced-motion:reduce){.ex-panel,.ex-msg{animation:none}.ex-typing i{animation:none;opacity:.6}}
@media print{.ex{display:none}}