#chat-btn {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #0891b2;
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(8, 145, 178, 0.35);
  z-index: 990;
  transition: transform 0.2s, box-shadow 0.2s;
}
.chat-btn-enter {
  animation: chat-btn-pop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes chat-btn-pop {
  from { transform: scale(0) rotate(-90deg); opacity: 0; }
  to { transform: scale(1) rotate(0deg); opacity: 1; }
}
#chat-btn:hover {
  transform: scale(1.07);
  box-shadow: 0 6px 20px rgba(8, 145, 178, 0.45);
}
#chat-btn:focus-visible,
#chat-clear:focus-visible,
#chat-close:focus-visible,
#chat-send:focus-visible,
.chat-suggestion:focus-visible {
  outline: 2px solid #67e8f9;
  outline-offset: 2px;
}
#chat-btn svg { transition: opacity 0.2s; }

#chat-panel {
  position: fixed;
  bottom: 96px;
  right: clamp(10px, 2vw, 28px);
  width: min(540px, calc(100vw - 20px));
  height: 72vh;
  max-height: 760px;
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.18);
  z-index: 989;
  overflow: hidden;
  transform: translateY(16px) scale(0.97);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.26s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.18s cubic-bezier(0.25, 1, 0.5, 1);
}
#chat-panel.open {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: all;
}

#chat-header {
  background: #0891b2;
  color: #fff;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
#chat-header .avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(255,255,255,0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
#chat-header .info {
  flex: 1;
  min-width: 0;
}
#chat-header .name { font-weight: 700; font-size: 14px; line-height: 1.2; }
#chat-header .status { font-size: 11px; opacity: 0.75; }
#chat-clear,
#chat-close {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 4px;
  opacity: 0.8;
  border-radius: 6px;
  transition: opacity 0.15s;
}
#chat-clear {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 8px;
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
#chat-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}
#chat-clear:hover,
#chat-close:hover { opacity: 1; }
#chat-clear:disabled {
  cursor: default;
  opacity: 0.35;
}

#chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: #fff;
  min-height: 0;
}
#chat-messages::-webkit-scrollbar { width: 4px; }
#chat-messages::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 4px; }

.chat-msg {
  display: flex;
  flex-direction: column;
}
.chat-msg.user {
  align-self: flex-end;
  align-items: flex-end;
  max-width: 76%;
}
.chat-msg.ai {
  align-self: flex-start;
  align-items: flex-start;
  width: 94%;
}

.chat-bubble {
  font-size: 14.5px;
  line-height: 1.65;
  word-break: break-word;
  overflow-wrap: anywhere;
}
.chat-bubble p {
  margin: 0 0 0.85em;
}
.chat-bubble p:last-child {
  margin-bottom: 0;
}
.chat-bubble ul,
.chat-bubble ol {
  margin: 0.2em 0 0.85em;
  padding-left: 1.35em;
}
.chat-bubble ul {
  list-style: disc outside;
}
.chat-bubble ol {
  list-style: decimal outside;
}
.chat-bubble li {
  margin: 0.3em 0;
  padding-left: 0.15em;
}
.chat-bubble h3,
.chat-bubble h4,
.chat-bubble h5 {
  margin: 1em 0 0.45em;
  color: #164e63;
  font-weight: 750;
  line-height: 1.35;
}
.chat-bubble h3:first-child,
.chat-bubble h4:first-child,
.chat-bubble h5:first-child {
  margin-top: 0;
}
.chat-bubble h3 { font-size: 16px; }
.chat-bubble h4 { font-size: 15px; }
.chat-bubble h5 { font-size: 14.5px; }
.chat-bubble hr {
  width: 100%;
  margin: 1em 0;
  border: 0;
  border-top: 1px solid #e2e8f0;
}
.chat-bubble strong {
  font-weight: 700;
  color: #164e63;
}
.chat-bubble em {
  font-style: italic;
}
.chat-reveal-token {
  display: inline-block;
}
.chat-msg.user .chat-bubble {
  background: #0891b2;
  color: #fff;
  padding: 10px 14px;
  border-radius: 13px;
  border-bottom-right-radius: 4px;
}
.chat-msg.user.chat-enter {
  animation: chat-user-enter 0.24s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes chat-user-enter {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
.chat-msg.ai .chat-bubble {
  background: none;
  color: #1e293b;
  padding: 2px 0;
}

.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 10px 14px;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  border-bottom-left-radius: 4px;
  width: fit-content;
}
.typing-indicator span {
  width: 7px;
  height: 7px;
  background: #94a3b8;
  border-radius: 50%;
  animation: typing-bounce 1.2s infinite ease-in-out;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typing-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-5px); opacity: 1; }
}

#chat-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0 16px 14px;
  background: #fff;
  flex-shrink: 0;
}
#chat-suggestions[hidden] {
  display: none;
}

#chat-lead-bar {
  padding: 12px 16px;
  border-top: 1px solid #e2e8f0;
  background: #fff;
  flex-shrink: 0;
}
#chat-lead-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  width: 100%;
  justify-content: center;
  border: 1px solid #0891b2;
  border-radius: 10px;
  background: #ecfeff;
  color: #155e75;
  cursor: pointer;
  padding: 9px 12px;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 700;
  transition: background 0.15s, transform 0.15s;
}
#chat-lead-btn:hover {
  background: #cffafe;
  transform: translateY(-1px);
}

.chat-lead-card {
  width: 100%;
  border: 1px solid #dbeef3;
  border-radius: 12px;
  background: #f8fafc;
  padding: 12px;
}
.chat-lead-kicker {
  margin-bottom: 8px;
  color: #64748b;
  font-size: 10.5px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.chat-lead-options {
  display: grid;
  gap: 7px;
}
.chat-lead-option {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 9px;
  background: #fff;
  color: #1e293b;
  cursor: pointer;
  padding: 9px 10px;
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.35;
  text-align: left;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.chat-lead-option:hover {
  border-color: #0891b2;
  background: #ecfeff;
  transform: translateY(-1px);
}
.chat-lead-form {
  display: grid;
  gap: 8px;
}
.chat-lead-form input,
.chat-lead-form textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 9px;
  padding: 8px 11px;
  font-family: inherit;
  font-size: 13px;
  color: #1e293b;
  background: #fff;
  resize: vertical;
  box-sizing: border-box;
}
.chat-lead-form input:focus,
.chat-lead-form textarea:focus {
  border-color: #0891b2;
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.12);
  outline: none;
}
.chat-lead-submit {
  border: none;
  border-radius: 9px;
  background: #0891b2;
  color: #fff;
  cursor: pointer;
  padding: 10px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  transition: background 0.15s;
}
.chat-lead-submit:hover { background: #155e75; }
.chat-lead-submit:disabled { background: #cbd5e1; cursor: not-allowed; }
.chat-suggestion {
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #f8fafc;
  color: #155e75;
  cursor: pointer;
  padding: 8px 10px;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.25;
  text-align: left;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}
.chat-suggestion:hover {
  border-color: #0891b2;
  background: #ecfeff;
  transform: translateY(-1px);
}

#chat-input-row {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid #e2e8f0;
  background: #fff;
  flex-shrink: 0;
}
#chat-input {
  flex: 1;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 9px 13px;
  font-size: 14px;
  resize: none;
  font-family: inherit;
  line-height: 1.4;
  max-height: 80px;
  overflow-y: auto;
  transition: border-color 0.15s, box-shadow 0.15s;
  color: #1e293b;
  background: #fff;
}
#chat-input:focus {
  border-color: #0891b2;
  box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.12);
  outline: none;
}
#chat-input:focus-visible {
  outline: none;
}
#chat-send {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: #0891b2;
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  align-self: flex-end;
  transition: background 0.15s;
}
#chat-send:hover { background: #155e75; }
#chat-send:disabled { background: #cbd5e1; cursor: not-allowed; }

.chat-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 580px) {
  #chat-panel {
    right: 10px;
    left: 10px;
    width: auto;
    bottom: 88px;
    height: 75vh;
  }
  #chat-lead-bar {
    padding-inline: 14px;
  }
  #chat-header {
    padding-inline: 14px 10px;
  }
  #chat-messages {
    padding: 16px;
  }
  .chat-msg.user {
    max-width: 84%;
  }
  .chat-msg.ai {
    width: 100%;
  }
  #chat-suggestions {
    padding-inline: 14px;
  }
  #chat-btn { right: 16px; bottom: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  #chat-btn,
  #chat-btn svg,
  #chat-panel,
  #chat-clear,
  #chat-close,
  .chat-suggestion,
  #chat-input,
  #chat-send {
    transition-duration: 0.01ms;
  }
  .typing-indicator span,
  .chat-msg.user.chat-enter,
  .chat-reveal-token {
    animation: none;
  }
}