:root{
  --bg:#0e0f14; --panel:#13141a; --panel2:#1b1d27;
  --txt:#e7e7ea; --muted:#b9b9c6; --pri:#8b5cf6; --pri2:#a78bfa;
  --acc:#6ee7b7; --err:#ef4444; --border:#262739;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:radial-gradient(80% 60% at 50% -10%, #1a1330 0%, #0e0f14 55%), var(--bg);
  color:var(--txt); font:16px/1.5 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
}

.hero{padding:32px 16px; text-align:center}
.hero h1{margin:0 0 8px; font-weight:800; letter-spacing:.5px; text-shadow:0 2px 18px rgba(139,92,246,.35)}
.sig{opacity:.9; filter:drop-shadow(0 0 10px rgba(139,92,246,.5))}
.sig span{color:var(--pri2)}

.container{max-width:900px; margin:0 auto; padding:0 16px 40px}
.panel{
  background:linear-gradient(180deg, rgba(167,139,250,.05), rgba(167,139,250,.02)) , var(--panel);
  border:1px solid var(--border); border-radius:16px;
  box-shadow:0 0 0 1px rgba(167,139,250,.06) inset, 0 10px 40px rgba(0,0,0,.45);
  padding:16px; backdrop-filter: blur(4px);
}

.row{display:flex; gap:10px; align-items:center; margin-bottom:10px}
.select{
  width:100%; background:var(--panel2); color:var(--txt); border:1px solid var(--border);
  padding:10px 12px; border-radius:10px; outline:none;
}
.messages{
  height:440px; overflow:auto; padding:12px; border:1px solid var(--border);
  border-radius:12px; background:linear-gradient(180deg, rgba(25,25,36,.4), rgba(25,25,36,.25));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.02);
}
.msg{max-width:85%; margin:8px 0; padding:10px 12px; border-radius:12px; word-wrap:break-word; white-space:pre-wrap}
.msg.user{margin-left:auto; background:rgba(139,92,246,.18); border:1px solid rgba(139,92,246,.35)}
.msg.bot{background:rgba(255,255,255,.03); border:1px solid var(--border)}

.code-box{
  margin:10px 0; border:1px solid var(--border); background:#0c0d12; border-radius:12px; overflow:hidden
}
.code-head{
  display:flex; justify-content:space-between; align-items:center;
  padding:8px 10px; background:#111320; border-bottom:1px solid var(--border);
}
.copy{cursor:pointer; border:1px solid var(--border); background:rgba(139,92,246,.15); color:var(--txt);
  padding:6px 10px; border-radius:8px}
pre{margin:0; padding:12px; overflow:auto}
code{font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size:13px; color:#eaeaff}

.input-row{display:flex; gap:10px; margin-top:12px}
.input{
  flex:1; padding:12px 14px; background:var(--panel2); border:1px solid var(--border);
  border-radius:10px; color:var(--txt); outline:none;
}
.btn{
  background:linear-gradient(180deg, var(--pri2), var(--pri)); color:white; border:0; padding:12px 16px;
  border-radius:10px; cursor:pointer; box-shadow:0 10px 25px rgba(139,92,246,.35);
}
.btn:active{transform:translateY(1px)}

/* ✅ Loader 3 points pour streaming */
.msg.typing {
  background:rgba(255,255,255,.05);
  border:1px solid var(--border);
  padding:10px 14px;
  border-radius:12px;
  display:inline-flex;
  gap:6px;
  width:auto;
}

.dot {
  width:8px;
  height:8px;
  background:#fff;
  border-radius:50%;
  animation: blink 1.4s infinite both;
}
.dot:nth-child(2) { animation-delay:.2s }
.dot:nth-child(3) { animation-delay:.4s }

@keyframes blink {
  0% { opacity:.2; transform:scale(.8) }
  50% { opacity:1; transform:scale(1) }
  100% { opacity:.2; transform:scale(.8) }
}