.ruby-toggle {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  z-index: 10000;
  background: linear-gradient(135deg, #1d4ed8, #2563eb);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(29, 78, 216, 0.35);
}

.ruby-panel {
  position: fixed;
  right: 1.5rem;
  bottom: 5.8rem;
  width: 360px;
  max-width: calc(100vw - 1rem);
  height: 520px;
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 14px 50px rgba(2, 6, 23, 0.25);
  z-index: 10000;
  display: none;
  overflow: hidden;
  border: 1px solid #e2e8f0;
}

.ruby-panel.active { display: flex; flex-direction: column; }

.ruby-head {
  background: #0f172a;
  color: #fff;
  padding: 12px 14px;
  font-size: 14px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ruby-close {
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 18px;
  cursor: pointer;
}

.ruby-messages {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  background: #f8fafc;
}

.ruby-msg {
  margin-bottom: 10px;
  max-width: 88%;
  padding: 10px 12px;
  border-radius: 12px;
  line-height: 1.45;
  font-size: 13px;
  white-space: pre-wrap;
}

.ruby-msg.user {
  margin-left: auto;
  background: #2563eb;
  color: #fff;
}

.ruby-msg.bot {
  margin-right: auto;
  background: #fff;
  color: #0f172a;
  border: 1px solid #dbeafe;
}

.ruby-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.ruby-quick button {
  border: 1px solid #cbd5e1;
  background: #fff;
  color: #0f172a;
  border-radius: 999px;
  font-size: 12px;
  padding: 6px 10px;
  cursor: pointer;
}

.ruby-input-wrap {
  display: flex;
  gap: 8px;
  border-top: 1px solid #e2e8f0;
  padding: 10px;
  background: #fff;
}

.ruby-input {
  flex: 1;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 13px;
  background: #ffffff !important;
  color: #0f172a !important;
  -webkit-text-fill-color: #0f172a !important;
  caret-color: #0f172a !important;
}

.ruby-input::placeholder {
  color: #64748b !important;
  -webkit-text-fill-color: #64748b !important;
}

.ruby-input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
  background: #ffffff !important;
  color: #0f172a !important;
  -webkit-text-fill-color: #0f172a !important;
}

.ruby-send {
  border: 0;
  border-radius: 10px;
  background: #1d4ed8;
  color: #fff;
  padding: 0 14px;
  font-size: 13px;
  cursor: pointer;
}

@media (max-width: 768px) {
  .ruby-panel {
    right: 0.5rem;
    left: 0.5rem;
    width: auto;
    bottom: 5.3rem;
    height: 62vh;
  }
  .ruby-toggle {
    right: 1rem;
    bottom: 1rem;
  }
}