.page--chat {
  padding: 0;
  margin: 0;
  height: calc(100vh - var(--header-height, 56px));
  overflow: hidden;
  background-color: var(--chat-page-bg, var(--color-gray-50));
}

.chat-container {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-height: 100%;
  overflow: hidden;
  background-color: var(--chat-container-bg, var(--color-gray-50));
}

.chat-header {
  flex-shrink: 0;
  border-bottom: 1px solid var(--chat-header-border-color, var(--color-gray-200));
  background-color: var(--chat-header-bg, var(--color-white));
  padding: var(--chat-header-padding, 16px 24px);
  position: relative;
  z-index: 1;
}

.chat-header__content {
  max-width: var(--chat-max-width, 800px);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: var(--chat-header-gap, 16px);
}

.chat-header__back {
  color: var(--chat-header-back-color, var(--color-gray-600));
  text-decoration: none;
  font-size: var(--chat-header-back-font-size, 14px);
  transition: color 120ms ease-out;
  white-space: nowrap;
}

.chat-header__back:hover {
  color: var(--chat-header-back-hover-color, var(--color-gray-900));
}

.chat-header__title {
  margin: 0;
  font-size: var(--chat-header-title-font-size, 16px);
  font-weight: var(--chat-header-title-font-weight, var(--font-weight-medium));
  color: var(--chat-header-title-color, var(--color-gray-900));
  flex: 1;
}

.chat-messages {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  min-height: 0;
  -webkit-overflow-scrolling: touch;
}

.chat-messages__inner {
  max-width: var(--chat-max-width, 800px);
  margin: 0 auto;
  padding: var(--chat-messages-padding, 32px 24px);
  display: flex;
  flex-direction: column;
  gap: var(--chat-messages-gap, 20px);
}

.chat-message {
  display: flex;
  flex-direction: column;
}

.chat-message__content {
  padding: var(--chat-message-padding, 14px 18px);
  border-radius: var(--chat-message-border-radius, 12px);
  font-size: var(--chat-message-font-size, 15px);
  line-height: var(--chat-message-line-height, 1.6);
  color: var(--chat-message-color, var(--color-gray-900));
  background-color: var(--chat-message-bg, var(--color-white));
  border: 1px solid var(--chat-message-border-color, var(--color-gray-200));
  max-width: var(--chat-message-max-width, 75%);
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.chat-message--user .chat-message__content {
  background-color: var(--chat-message-user-bg, var(--color-gray-100));
  border-color: var(--chat-message-user-border-color, var(--color-gray-300));
  align-self: flex-end;
}

.chat-message--assistant .chat-message__content {
  background-color: var(--chat-message-assistant-bg, var(--color-white));
  border-color: var(--chat-message-assistant-border-color, var(--color-gray-200));
  align-self: flex-start;
}

.chat-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--chat-empty-color, var(--color-gray-500));
  font-size: var(--chat-empty-font-size, 15px);
}

.chat-input {
  flex-shrink: 0;
  border-top: 1px solid var(--chat-input-border-color, var(--color-gray-200));
  background-color: var(--chat-input-bg, var(--color-white));
  padding: var(--chat-input-padding, 20px 24px);
}

.chat-input__inner {
  max-width: var(--chat-max-width, 800px);
  margin: 0 auto;
}

.chat-input__form {
  position: relative;
  display: flex;
}

.chat-input__textarea {
  flex: 1;
  min-height: var(--chat-input-textarea-min-height, 80px);
  max-height: var(--chat-input-textarea-max-height, 200px);
  resize: vertical;
  font-family: inherit;
  font-size: var(--chat-input-textarea-font-size, 15px);
  line-height: var(--chat-input-textarea-line-height, 1.5);
  padding: var(--chat-input-textarea-padding, 12px 90px 12px 16px);
  border-radius: var(--chat-input-textarea-border-radius, 8px);
}

.chat-input__form .btn {
  position: absolute;
  right: var(--chat-input-button-right, 8px);
  bottom: var(--chat-input-button-bottom, 8px);
  width: auto;
  white-space: nowrap;
}

.chat-clear-btn {
  margin-top: var(--chat-clear-btn-margin-top, 12px);
  width: 100%;
  padding: var(--chat-clear-btn-padding, 8px 12px);
  background: transparent;
  border: none;
  color: var(--chat-clear-btn-color, var(--color-gray-600));
  font-size: var(--chat-clear-btn-font-size, 13px);
  text-align: center;
  cursor: pointer;
  transition: color 120ms ease-out;
}

.chat-clear-btn:hover {
  color: var(--chat-clear-btn-hover-color, var(--color-gray-900));
}