// 组件允许单个组件打包，因此默认引入公共基础样式

@import '../../base.less';

@import './_var.less';

@import './_mixin.less';

@import './_doc.less';

@import '../../mixins/_reset.less';

@import '../../_variables.less';

.@{prefix}-chat {
  .reset;

  display: flex;
  flex-direction: column;
  // height: 100%;
  // overflow: hidden;
  min-height: 0;
  flex: 1 1 0%;
  width: 100%;
  color: @comment-text-color-default;
  position: relative;

  // 聊天列表
  &__list {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;

    &:hover {
      &::-webkit-scrollbar-thumb {
        background-color: @scrollbar-color;
      }
    }

    &::-webkit-scrollbar {
      width: 4px;
      background: transparent;
    }

    &::-webkit-scrollbar-thumb {
      border-radius: 6px;
      border: 4px solid transparent;
      background-clip: border-box;
      background-color: transparent;
    }

    &--reverse {
      display: flex;
      flex-direction: column-reverse;
    }

    .place-holder {
      flex-grow: 1;
      flex-shrink: 1;
    }

    .clear-btn {
      color: @text-color-secondary;
      font-size: @font-size-s;
      cursor: pointer;

      .@{prefix}-divider__inner-text {
        display: flex;
        align-items: center;
      }

      .clear-btn-text {
        margin-left: @comp-margin-xs;
      }

      &:hover {
        color: @text-color-primary;
      }
    }
  }

  // 输入框插槽
  &__footer {
    position: relative;

    &__content {
      width: 100%;
      position: relative;
      display: flex;
      padding-right: 0;
    }

    .@{prefix}-chat__footer__content {
      margin-top: @comp-margin-xl;
    }

    &__textarea {
      flex-grow: 1;
      position: relative;
      border-radius: @border-radius-round;

      .@{prefix}-textarea {
        width: 100%;
        padding: 0 @comp-paddingLR-xxs;
        box-sizing: border-box;

        .@{prefix}-textarea__inner {
          background: @bg-color-secondarycontainer;
          padding: @comp-size-xxs @comp-size-xxxxxl @comp-size-xxs @comp-size-xs;
          border-radius: 32px;
          scrollbar-width: none;
        }

        .@{prefix}-textarea__inner:hover {
          box-shadow: @chat-input-hover;
        }

        .@{prefix}-textarea__inner.@{prefix}-is-focused {
          border-color: @brand-color;
          background: @bg-color-container;
          box-shadow: @chat-textarea-shadow-active;
        }

        .@{prefix}-textarea__inner::placeholder {
          color: @text-color-secondary;
        }
      }

      &__icon {
        position: absolute;
        bottom: @comp-paddingTB-s;
        right: @comp-paddingLR-s;
        text-align: center;
        cursor: pointer;
        height: @comp-size-xxl;
        display: flex;
        align-items: center;
        justify-content: center;

        & &__default {
          transform: rotate(-90deg);
          width: @comp-size-xxl;
          height: @comp-size-xxl;
          border-radius: @border-radius-circle;
          color: @text-color-disabled;
        }

        & &--focus {
          background: @brand-color;
          color: @text-color-anti;
        }

        .@{prefix}-button.@{prefix}-size-s .@{prefix}-icon {
          font-size: @font-size-xl;
        }
      }
    }

    &__stopbtn {
      flex: 0 0 auto;
      margin-left: @comp-margin-l;

      .@{prefix}-button {
        width: 100px;
        height: @comp-size-xxxxl;
        border-radius: @border-radius-round;
        background: @bg-color-secondarycontainer;
        color: @text-color-primary;
        font-size: @font-size-l;

        &__text {
          align-items: center;
        }

        .@{prefix}-icon {
          font-size: @font-size-xl;
          margin-right: @comp-margin-s;
        }
      }
    }
  }

  // sender输入框样式
  &-sender {
    position: relative;
    width: 100%;
    padding: 0 @comp-paddingLR-xxs;
    box-sizing: border-box;

    &__header {
      ::part(t-attachment-list-wrap) {
        // 附件列表区域的内边距：左右使用 @pop-padding-s 变量，上下为0
        top: -4px;
        padding: 0;
      }

      ::part(t-attachment-list) {
        padding: 4px 0;
      }

      &:empty {
        display: none;
      }
    }

    &__inner-header {
      border-radius: @chat-sender-radius @chat-sender-radius @border-radius-medium @border-radius-medium;
    }

    &__upload {
      margin-right: @comp-margin-s;
      width: @comp-size-s;
      height: @comp-size-s;
      color: @text-color-secondary;
    }

    &__textarea {
      position: relative;
      border: 1px solid @border-level-2-color;
      border-radius: @chat-sender-radius;
      padding: @comp-paddingLR-m;
      background-color: @bg-color-specialcomponent;
      transition: border @anim-time-fn-easing @anim-duration-base, box-shadow @anim-time-fn-easing @anim-duration-base, background-color @anim-time-fn-easing @anim-duration-base;

      &--focus {
        border-color: @brand-color;
        box-shadow: @chat-textarea-shadow-active;
      }

      &__wrapper {
        margin-bottom: @comp-margin-m;
        position: relative;
        flex: 1 1 0;
        min-height: 0;
        display: flex;
      }
    }

    &__textarea:hover {
      border-color: @brand-color;
      box-shadow: @shadow-1;
    }

    &__textarea--focus:hover {
      box-shadow: @chat-textarea-shadow-active;
    }

    .@{prefix}-textarea {
      .@{prefix}-textarea__inner {
        background-color: rgba(0, 0, 0, 0%);
        padding: 0;
        border: 0;
        scrollbar-width: none;
        font: @font-body-large;
        color: @text-color-primary;
      }

      .@{prefix}-textarea__inner.@{prefix}-is-focused {
        border: 0;
      }

      .@{prefix}-textarea__inner::placeholder {
        font: @font-body-large;
        color: @text-color-disabled;
      }

      .@{prefix}-textarea__inner:hover {
        box-shadow: none;
      }

      .@{prefix}-textarea__inner:focus {
        box-shadow: none;
      }
    }

    &__footer {
      display: flex;
      justify-content: space-between;
    }

    &__button {
      display: flex;
      align-items: center;

      .@{prefix}-button .@{prefix}-icon {
        font: var(--td-font-body-large);
      }

      &__actions {
        margin-right: @comp-margin-m;
      }

      & &__default {
        padding: 0;
        transform: rotate(-90deg);
        color: @text-color-anti;
        width: @comp-size-s;
        height: @comp-size-s;
        border-radius: @border-radius-circle;
        background-color: @brand-color;
        border: none;
      }

      & &__default:not(&--disabled):hover {
        background-color: var(--td-brand-color-hover);
      }

      & &__default:not(&--disabled):focus {
        background-color: var(--td-brand-color-active);
      }

      & &__default > div {
        display: none !important;
      }

      & &--disabled {
        background-color: @bg-color-secondarycomponent;
        color: @bg-color-container;

        &.@{prefix}-button--variant-text:hover {
          color: var(--td-bg-color-container);
        }
      }

      &__stopicon {
        width: @size-4;
        height: @size-4;
        border: 1px solid @bg-color-container;
        background: @bg-color-container;
      }
    }

    &__attachment {
      display: block;
    }
  }

  &__inner {
    display: flex;
    margin-bottom: @comp-margin-l;

    .@{prefix}-chat__avatar {
      flex: 0 0 auto;
    }

    .@{prefix}-chat__content {
      display: flex;
      justify-content: center;
      flex: 1 1 auto;
      width: 100%;

      &--base {
        padding-top: @comp-paddingTB-xl;
      }

      > .@{prefix}-chat-loading {
        padding: 0 @comp-paddingLR-m;
      }
    }

    .@{prefix}-chat__detail {
      padding: 0 @comp-paddingLR-l;
      max-width: calc(100% - @comp-size-xl);
      box-sizing: border-box;
    }

    &.model-change,
    &.system {
      justify-content: center;
      margin-top: @comp-margin-xxl;

      // 模型切换在chat-content中渲染居中对齐覆写样式
      .@{prefix}-chat__content {
        align-items: center;
      }

      .@{prefix}-chat__text,
      .@{prefix}-chat__detail {
        padding: 0;
        font-size: @font-size-s;
        color: @text-color-disabled;
      }

      .@{prefix}-chat__notice {
        // 模型切换为content插槽需要覆盖样式
        .@{prefix}-chat__text {
          padding: 0;
          font-size: @font-size-s;
          color: @text-color-disabled;
        }

        background: @bg-color-secondarycontainer;
        padding: @comp-paddingTB-xxs @comp-paddingLR-s;
        font-size: @font-size-s;
        color: @text-color-disabled;
        border-radius: @border-radius-default;
        box-sizing: border-box;
        line-height: 20px;
        text-align: center;

        span {
          color: @text-color-placeholder;
        }
      }
    }

    &.error {
      .@{prefix}-chat__text__content {
        color: @error-color;
      }
    }
  }

  // chat布局
  &--normal {
    .@{prefix}-chat__inner.user {
      flex-direction: row-reverse;

      .@{prefix}-chat__avatar {
        margin-right: 0;
      }

      .@{prefix}-chat__content {
        align-items: flex-end;

        .@{prefix}-chat__base {
          justify-content: flex-end;
        }
      }
    }

    .@{prefix}-chat__detail {
      max-width: ~'min(calc(100% - 40px), 800px)';
    }
  }

  &__avatar {
    flex-shrink: 0;
    cursor: pointer;
    display: flex;
    margin: 0 @comp-margin-xs;
    padding-top: @comp-paddingTB-xl;

    &__box {
      padding-top: @pop-padding-m;
    }

    &-image {
      width: @comp-size-m;
      height: @comp-size-m;
      border-radius: @border-radius-circle;
    }
  }

  &__content {
    font: @comment-content-text-size;
    display: flex;
    flex-direction: column;
    align-items: flex-start;

    .@{prefix}-skeleton {
      width: 100%;
      padding: @pop-padding-xxl;
    }
  }

  &__base {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-start;
    align-items: baseline;
    font: @font-body-medium;
    color: @text-color-placeholder;
    padding-left: @pop-padding-xxl;
  }

  &__name {
    padding-right: @comp-margin-s;
    cursor: pointer;
  }

  // 消息样式
  &__text {
    padding: @comp-paddingTB-m 0;
    font: @font-body-large;
    word-break: break-all;

    & &--user {
      pre {
        color: @text-color-secondary;
        font: @font-body-large;
        margin: 0;
        white-space: pre-wrap;
      }
    }

    // 兼容系统消息和模型切换消息样式
    & .other__model-change,
    & .other__system {
      background: @bg-color-secondarycontainer;
      padding: @comp-paddingTB-xxs @comp-paddingLR-s;
      color: @text-color-disabled;
      border-radius: @border-radius-default;
      box-sizing: border-box;
      line-height: 20px;
      text-align: center;

      pre {
        font-size: @font-size-s;
      }

      span {
        color: @text-color-placeholder;
      }
    }

    & .other__error {
      pre {
        color: @error-color;
      }
    }

    &__assistant {
      color: @text-color-primary;
      line-height: 2;

      p,
      ul,
      ol {
        line-height: 1.5;
      }

      ol {
        padding-inline-start: 20px;
      }

      img {
        max-width: 100%;
        margin: @comp-margin-xs 0;
        border-radius: @border-radius-default;
      }

      :where(code):not(:where(pre *)) {
        color: @error-color;
        background: @error-color-1;
        border-radius: @border-radius-default;
        padding: @comp-paddingTB-xxs @pop-padding-m;
        font-size: @font-size-s;
        word-break: break-word;
        margin: 0 @comp-margin-xxs;
      }

      blockquote {
        border-left: 2px solid @gray-color-3;
        background: @gray-color-1;
        color: @font-gray-1;
        padding: @comp-paddingTB-m @comp-paddingTB-m @comp-paddingTB-m @comp-size-xs;
        margin: @comp-margin-l 0;
      }

      hr {
        opacity: 1;
        border: 1px solid @border-level-1-color;
      }
    }

    & &__assistant &__content .hljs {
      background-color: @code-bg-color-page;
      border-radius: @border-radius-large;
    }

    &--variant--base {
      .@{prefix}-chat__detail {
        background-color: @bg-color-secondarycontainer;
        border-radius: @border-radius-extraLarge;
      }
    }
  }

  &__actions-margin {
    margin-left: @comp-margin-l;
  }

  &__actions {
    margin-top: @comp-margin-xs;
    display: flex;
    list-style: none;
    padding: @chat-action-icon-padding;
    background-color: @bg-color-secondarycontainer;
    border-radius: @border-radius-medium;
    border: 1px solid @border-level-2-color;
    overflow: hidden;

    & .@{prefix}-button {
      padding: @comp-paddingTB-xs @comp-paddingLR-xs;
      width: @comp-size-xxxs;
      height: @comp-size-xxxs;
      box-sizing: content-box;
      color: @text-color-primary;
      background-color: @bg-color-secondarycontainer;
      border: 0;
      margin-right: @comp-margin-xs;

      .@{prefix}-icon {
        font-size: @font-size-l;
      }
    }

    & .@{prefix}-chat-button--active {
      color: @brand-color;
    }

    & .@{prefix}-button:hover {
      background-color: @bg-color-secondarycontainer-hover;
    }

    & .@{prefix}-space .@{prefix}-space-item {
      height: @comp-size-xs;
    }
  }

  &__refresh {
    display: flex;
    align-items: center;

    &-line {
      width: 1px;
      height: @comp-size-xxxs;
      background-color: @chat-refresh-line;
      margin-right: @comp-margin-xs;
    }
  }

  &__code-header {
    display: flex;
    padding: 0 @pop-padding-xl;
    padding-top: @pop-padding-xl;
    justify-content: space-between;
  }

  &__language-txt {
    color: @code-font-color-base;
  }

  &__copy-btn {
    color: @code-font-color-base;
    cursor: pointer;
  }

  /* 内置“回到底部”按钮样式，等效于原先 bottomBtn/to-bottom */
  &__to-bottom {
    position: absolute;
    left: 50%;
    margin-left: -20px;
    bottom: 210px;
    padding: 0;
    border: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;

    /* 使用设计变量替换多层阴影，避免直接 rgba */
    box-shadow: @shadow-2;
  }

  &__to-bottom-inner {
    width: 40px;
    height: 40px;
    border: 1px solid @border-level-2-color;
    box-sizing: border-box;
    background: @bg-color-container;
    border-radius: 50%;
    font-size: 24px;
    line-height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;

    .t-icon {
      font-size: 24px;
    }
  }
}

// 思维链样式
.@{prefix}-chat__detail {
  .@{prefix}-chat__text--variant--outline & {
    border: 1px solid @component-border;
    border-radius: @border-radius-extraLarge;
  }

  .model-change.@{prefix}-chat__text--variant--outline &,
  .system.@{prefix}-chat__text--variant--outline & {
    border: none;
  }

  &-reasoning {
    .@{prefix}-chat__text--variant--text & {
      padding-top: @comp-paddingTB-m;

      ~ .@{prefix}-chat__text {
        padding-right: 0;
      }
    }

    .@{prefix}-chat__text--variant--outline & {
      .@{prefix}-collapse {
        background: none;
      }
    }

    .@{prefix}-collapse {
      background: none;
    }

    .@{prefix}-collapse-panel {

      .@{prefix}-chat__text--variant--outline & {
        margin-left: 0;
        padding: @comp-paddingTB-m 0;

        // 移除 t-chat__text 的边框
        .@{prefix}-chat__text {
          border: none;
        }
      }

      &__icon {
        width: 24px;
        height: 24px;
        display: flex;
        align-items: center;
      }

      &__header {
        padding: @comp-paddingTB-s @comp-paddingTB-m;
        font: @font-body-medium;
      }

      &__wrapper {
        background-color: @bg-color-secondarycontainer;
        border-radius: @border-radius-medium;

        .@{prefix}-fake-arrow {
          color: @text-color-secondary;
          transform: rotate(180deg) scale(1.125);
        }
      }

      &__icon--active {
        .@{prefix}-fake-arrow {
          transform: rotate(0deg) scale(1.125);
        }
      }

      &__content {
        background-color: @bg-color-secondarycontainer;
        padding: 0 @comp-paddingTB-m @comp-paddingTB-s @comp-paddingTB-m;

        .@{prefix}-chat__text {
          padding: 0;

          .@{prefix}-chat__text__assistant {
            color: @text-color-placeholder;
            font-weight: 400;
            font-size: @font-size-base;

            .@{prefix}-chat__text__content {
              p {
                .reset();
              }
            }
          }
        }
      }
    }
  }
}

.@{prefix}-chat-loading {
  display: flex;
  align-items: center;

  &__indicator {
    &--moving {
      position: relative;
      width: 14px;
      height: 14px;

      .@{prefix}-chat-loading__dot {
        position: absolute;
        width: 8px;
        height: 8px;
        border-radius: @border-radius-circle;
        background-color: @brand-color;

        &--top {
          top: -4px;
          left: 3px;
          animation: dot-moving-top .6s ease-in-out alternate infinite;
        }

        &--left {
          bottom: -5px;
          left: -5px;
          animation: dot-moving-left .6s ease-in-out alternate infinite;
        }

        &--right {
          bottom: -5px;
          right: -5px;
          animation: dot-moving-right .6s ease-in-out alternate infinite;
        }
      }
    }

    &--gradient {
      width: 14px;
      height: 14px;
      background-color: transparent;
      border-radius: @border-radius-circle;
      border: 1.5px solid @brand-color;
      animation: border-gradient-color .6s ease-in-out alternate infinite;
      box-sizing: border-box;
    }

    @keyframes border-gradient-color {
      0% {
        border-color: @brand-color;
        border-width: 1.5px;
      }

      50% {
        border-color: @brand-color-8;
        border-width: 3px;
      }

      100% {
        border-color: @brand-color-6;
        border-width: 4px;
      }
    }

    @keyframes dot-moving-top {
      0% {
        transform: scale(1);
        top: -4px;
      }

      100% {
        transform: scale(1.75);
        top: 3px;
      }
    }

    @keyframes dot-moving-left {
      0% {
        transform: scale(1);
        bottom: -4px;
        left: -4px;
      }

      100% {
        transform: scale(1.75);
        bottom: 3px;
        left: 3px;
      }
    }

    @keyframes dot-moving-right {
      0% {
        transform: scale(1);
        bottom: -4px;
        right: -4px;
      }

      100% {
        transform: scale(1.75);
        bottom: 3px;
        right: 3px;
      }
    }
  }

  &__text {
    margin-left: 8px;
  }
}