/* ============================ چت‌بات ============================ */
.cb-launch{position:fixed;inset-inline-end:18px;bottom:18px;z-index:120;display:flex;
  align-items:center;gap:10px;border:0;cursor:pointer;font-family:inherit;
  background:var(--ink);color:#fff;border-radius:999px;padding:12px 18px 12px 14px;
  font-weight:800;font-size:.95rem;box-shadow:var(--shadow)}
.cb-launch:hover{background:#17304b}
.cb-launch .av{width:38px;height:38px;border-radius:50%;overflow:hidden;flex:0 0 auto;
  background:radial-gradient(circle at 50% 35%,#26405f,#0B1725);
  box-shadow:0 0 0 2px rgba(255,255,255,.28)}
.cb-launch .av img,.cb-head .av img{width:100%;height:100%;object-fit:contain;display:block}
.cb-launch .dot{width:10px;height:10px;border-radius:50%;background:var(--green);
  animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(46,158,107,.65);opacity:1}
  70%{box-shadow:0 0 0 9px rgba(46,158,107,0);opacity:.75}
  100%{box-shadow:0 0 0 0 rgba(46,158,107,0);opacity:1}}
.cb-launch[data-open="true"]{display:none}

.cb{position:fixed;inset-inline-end:18px;bottom:18px;z-index:130;width:min(calc(100vw - 28px),400px);
  height:min(calc(100vh - 36px),620px);background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow);display:none;flex-direction:column;overflow:hidden}
.cb[data-open="true"]{display:flex;animation:cbUp .28s cubic-bezier(.2,.8,.2,1)}
@keyframes cbUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@media (max-width:520px){
  .cb{inset:0;width:100%;height:100%;border-radius:0;border:0}
}
.cb-head{background:linear-gradient(135deg,var(--ink),#24405f);color:#fff;padding:14px 16px;
  display:flex;align-items:center;gap:12px;flex:0 0 auto}
.cb-head .av{width:42px;height:42px;border-radius:50%;overflow:hidden;flex:0 0 auto;
  background:radial-gradient(circle at 50% 35%,#2b4a6d,#0B1725);
  box-shadow:0 0 0 2px rgba(255,255,255,.22)}
.cb-head b{display:block;font-size:.98rem}
.cb-head small{font-size:.76rem;color:#9DB0C6;display:flex;align-items:center;gap:6px}
.cb-head small i{width:8px;height:8px;border-radius:50%;background:var(--green);display:block;
  animation:pulse 1.6s ease-in-out infinite}
.cb-head button{margin-inline-start:auto;width:36px;height:36px;border-radius:50%;
  border:1px solid rgba(255,255,255,.25);background:transparent;color:#fff;cursor:pointer;font-size:1.2rem}

.cb-body{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px;
  background:linear-gradient(180deg,var(--paper),var(--paper-2))}
.cb-body::-webkit-scrollbar{width:6px}
.cb-body::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}

.msg{max-width:86%;font-size:.94rem;line-height:1.85;padding:11px 14px;border-radius:var(--r-md);
  animation:msgIn .3s ease}
@keyframes msgIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.msg.bot{background:#fff;border:1px solid var(--line);align-self:flex-start;
  border-start-start-radius:5px}
.msg.me{background:var(--ink);color:#fff;align-self:flex-end;border-start-end-radius:5px}
.msg b{font-weight:800}
.msg .src{display:block;margin-top:8px;padding-top:8px;border-top:1px dashed var(--line);
  font-size:.78rem;color:var(--ink-3)}
.msg .src a{color:var(--brand-deep);font-weight:700}

.typing{display:flex;gap:4px;align-self:flex-start;background:#fff;border:1px solid var(--line);
  padding:13px 16px;border-radius:var(--r-md);border-start-start-radius:5px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--ink-3);opacity:.45;
  animation:blink 1.2s infinite}
.typing i:nth-child(2){animation-delay:.2s} .typing i:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,60%,100%{opacity:.25;transform:translateY(0)}30%{opacity:.9;transform:translateY(-3px)}}

.cb-opts{display:flex;flex-wrap:wrap;gap:8px;align-self:flex-start;max-width:100%}
.cb-opts button{font-family:inherit;font-size:.88rem;font-weight:700;cursor:pointer;
  background:#fff;border:1.5px solid var(--line);border-radius:999px;padding:9px 16px;color:var(--ink);
  transition:all .18s}
.cb-opts button:hover{border-color:var(--brand);color:var(--brand-deep)}
.cb-opts button.go{background:var(--brand);border-color:var(--brand);color:#fff}
.cb-opts button.ghost{background:transparent;border-style:dashed;color:var(--ink-3)}

.cb-foot{flex:0 0 auto;border-top:1px solid var(--line);background:var(--paper-2);padding:10px 12px}
.cb-input{display:flex;gap:8px;align-items:center}
.cb-input input{flex:1;min-width:0;font-family:inherit;font-size:.94rem;padding:11px 14px;
  border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink)}
.cb-input input:focus{outline:none;border-color:var(--brand)}
.cb-input button{width:42px;height:42px;border-radius:50%;border:0;background:var(--brand);
  color:#fff;cursor:pointer;flex:0 0 auto;display:grid;place-items:center}
.cb-disclaimer{font-size:.72rem;color:var(--ink-3);text-align:center;margin-top:8px}