.kk-chat-button {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 80;
  width: 58px;
  height: 58px;
  border: 0;
  border-radius: 50%;
  background: #ed5b24;
  color: #fff;
  font: 850 23px/1 Arial, sans-serif;
  box-shadow: 0 18px 42px rgba(16, 25, 35, .28);
  cursor: pointer;
}
.kk-chat {
  position: fixed;
  right: 22px;
  bottom: 92px;
  z-index: 80;
  width: min(390px, calc(100vw - 28px));
  max-height: min(680px, calc(100svh - 112px));
  display: none;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
  border: 1px solid #dbe3e9;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 22px 60px rgba(16, 25, 35, .28);
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
}
.kk-chat.open { display: grid; }
.kk-chat-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  background: #101923;
  color: #fff;
}
.kk-chat-head strong { display: block; font-size: 15px; }
.kk-chat-head span { display: block; margin-top: 2px; color: #c6d2dc; font-size: 12px; }
.kk-chat-close {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 6px;
  background: transparent;
  color: #fff;
  cursor: pointer;
}
.kk-chat-log {
  min-height: 260px;
  max-height: 440px;
  overflow: auto;
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 14px;
  background: #f7f9fa;
}
.kk-chat-msg {
  max-width: 86%;
  padding: 10px 12px;
  border-radius: 8px;
  white-space: pre-wrap;
  font-size: 14px;
  line-height: 1.45;
}
.kk-chat-msg.bot {
  justify-self: start;
  background: #fff;
  border: 1px solid #dbe3e9;
  color: #18242f;
}
.kk-chat-msg.user {
  justify-self: end;
  background: #256589;
  color: #fff;
}
.kk-chat-rate {
  justify-self: start;
  display: flex;
  gap: 6px;
  margin-top: -4px;
}
.kk-chat-rate button {
  min-width: 34px;
  min-height: 28px;
  border: 1px solid #dbe3e9;
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
}
.kk-chat-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid #dbe3e9;
}
.kk-chat-form textarea {
  width: 100%;
  min-height: 48px;
  max-height: 120px;
  resize: vertical;
  padding: 10px;
  border: 1px solid #c8d3dc;
  border-radius: 6px;
  font: inherit;
}
.kk-chat-form button {
  min-width: 82px;
  border: 0;
  border-radius: 6px;
  background: #ed5b24;
  color: #fff;
  font-weight: 850;
  cursor: pointer;
}
@media (max-width: 520px) {
  .kk-chat-button { right: 14px; bottom: 14px; }
  .kk-chat { right: 14px; bottom: 84px; }
}