#chat-widget {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 1050;
}

#chat-toggle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background-color: var(--accent);
  color: var(--carbon);
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  cursor: pointer;
  transition: transform 0.2s var(--ease-silk);
}

#chat-toggle:hover {
  transform: scale(1.06);
}

#chat-panel {
  position: absolute;
  right: 0;
  bottom: 68px;
  width: min(340px, calc(100vw - 2.5rem));
  height: min(460px, calc(100vh - 8rem));
  background-color: var(--surface-2);
  border-radius: 16px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat-header {
  background-color: var(--accent);
  color: var(--carbon);
  padding: 0.85rem 1rem;
  font-family: 'Space Grotesk', 'Inter', sans-serif;
  font-weight: 500;
  font-size: 0.95rem;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.chat-msg {
  max-width: 85%;
  padding: 0.5rem 0.75rem;
  border-radius: 12px;
  font-size: 0.88rem;
  line-height: 1.4;
  white-space: pre-wrap;
}

.chat-msg-bot {
  align-self: flex-start;
  background-color: var(--surface);
  color: var(--ink);
  border-bottom-left-radius: 4px;
}

.chat-msg-note {
  align-self: center;
  max-width: 100%;
  background: none;
  color: var(--ink);
  opacity: 0.6;
  font-size: 0.75rem;
  text-align: center;
  padding: 0 0.5rem;
}

.chat-msg-user {
  align-self: flex-end;
  background-color: var(--accent);
  color: var(--carbon);
  border-bottom-right-radius: 4px;
}

.chat-msg-error {
  align-self: flex-start;
  background-color: #ffe3e3;
  color: #8a1f1f;
  border-bottom-left-radius: 4px;
}

[data-theme="dark"] .chat-msg-error {
  background-color: #3a1414;
  color: #ff9d9d;
}

.chat-remaining {
  padding: 0.3rem 0.85rem 0;
  font-size: 0.7rem;
  color: var(--ink);
  opacity: 0.55;
  text-align: right;
  min-height: 1rem;
}

.chat-form {
  display: flex;
  gap: 0.5rem;
  padding: 0.65rem;
  border-top: 1px solid var(--line);
  background-color: var(--surface-2);
}

.chat-form input {
  flex: 1;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 0.45rem 0.9rem;
  font-size: 0.88rem;
  outline: none;
  background-color: var(--surface);
  color: var(--ink);
}

.chat-form input:focus {
  border-color: var(--accent);
}

.chat-form button {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: none;
  background-color: var(--accent);
  color: var(--carbon);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

.chat-form button:disabled {
  opacity: 0.5;
  cursor: default;
}

@media (max-width: 420px) {
  #chat-widget {
    right: 1rem;
    bottom: 1rem;
  }
}