:root{
  --kp-bg:#0b1020;
  --kp-card:#141a2a;
  --kp-accent:#90e0ef;
  --kp-accent-2:#4cc9f0;
  --kp-text:#e6edf3;
  --kp-muted:#9aa4b2;
  --kp-danger:#ff6b6b;
  --radius:16px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}
.kp-launcher{
  position:fixed;right:20px;bottom:20px;width:56px;height:56px;border-radius:50%;
  background:linear-gradient(135deg,var(--kp-accent-2),var(--kp-accent));
  color:#0b1020;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow);transition:transform .15s ease, box-shadow .15s ease; z-index:9999;
}
.kp-launcher:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(0,0,0,.45)}
.kp-launcher:active{transform:translateY(0)}

.kp-chat{
  position:fixed;right:20px;bottom:88px;width:360px;max-width:calc(100vw - 24px);
  background:var(--kp-card);border:1px solid rgba(255,255,255,.08);
  border-radius:var(--radius);box-shadow:var(--shadow);display:none;flex-direction:column;overflow:hidden;z-index:9999;
}
.kp-chat.open{display:flex}

.kp-header{display:flex;align-items:center;gap:10px;padding:14px 14px;border-bottom:1px solid rgba(255,255,255,.08);
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,0));}
.kp-logo{width:28px;height:28px;border-radius:8px;background:linear-gradient(135deg,var(--kp-accent),var(--kp-accent-2));display:inline-flex;align-items:center;justify-content:center;font-weight:800;color:#0b1020}
.kp-title{font-weight:700;letter-spacing:.2px}
.kp-sub{font-size:12px;color:var(--kp-muted)}
.kp-close{margin-left:auto;background:transparent;border:none;color:var(--kp-muted);font-size:22px;cursor:pointer}

.kp-messages{padding:14px;overflow:auto;max-height:60vh;scroll-behavior:smooth}
.kp-empty{font-size:13px;color:var(--kp-muted);text-align:center;padding:12px 6px}

.kp-msg{display:flex;gap:10px;margin:10px 0}
.kp-msg .avatar{width:26px;height:26px;border-radius:50%;flex:0 0 26px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;background:#20283d;color:#b4c1d6}
.kp-msg.user{flex-direction:row-reverse}
.kp-msg.user .avatar{background:linear-gradient(135deg,var(--kp-accent-2),var(--kp-accent));color:#0b1020}

.kp-bubble{max-width:75%;padding:10px 12px;border-radius:14px;line-height:1.35;font-size:14px;word-wrap:break-word;white-space:pre-wrap}
.kp-msg.bot .kp-bubble{background:#0f1424;border:1px solid rgba(255,255,255,.06)}
.kp-msg.user .kp-bubble{background:linear-gradient(135deg,#1e2740,#1a2238);border:1px solid rgba(255,255,255,.08)}

.kp-footer{padding:10px;border-top:1px solid rgba(255,255,255,.08);background:rgba(0,0,0,.15)}
.kp-input{display:flex;gap:8px}
.kp-input textarea{flex:1;resize:none;min-height:44px;max-height:140px;background:#0e1426;border:1px solid rgba(255,255,255,.08);color:var(--kp-text);
  border-radius:12px;padding:10px 12px;font-size:14px;outline:none}
.kp-input textarea:focus{border-color:var(--kp-accent)}
.kp-send{background:linear-gradient(135deg,var(--kp-accent-2),var(--kp-accent));border:none;color:#0b1020;padding:0 14px;border-radius:12px;font-weight:700;cursor:pointer}
.kp-send[disabled]{opacity:.6;cursor:not-allowed}

.kp-hint{font-size:12px;color:var(--kp-muted);padding:6px 12px}
.kp-error{color:var(--kp-danger);font-size:12px;margin-top:6px}

@media (max-width:480px){
  .kp-chat{right:12px;left:12px;bottom:84px;width:auto}
}