/*
 * Copyright 2025 The Chromium Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:host {
  display: flex;
  flex-direction: column;
}

.input-form {
  display: flex;
  flex-direction: column;
  padding: 0 var(--sys-size-5) var(--sys-size-5) var(--sys-size-5);
  max-width: var(--sys-size-36);
  background-color: var(--sys-color-cdt-base-container);
  width: 100%;

}

.chat-readonly-container {
  display: flex;
  width: 100%;
  max-width: var(--sys-size-36);
  justify-content: center;
  align-items: center;
  background-color: var(--sys-color-surface3);
  font: var(--sys-typescale-body4-regular);
  padding: var(--sys-size-5) 0;
  border-radius: var(--sys-shape-corner-medium-small);
  margin-bottom: var(--sys-size-5);
  color: var(--sys-color-on-surface-subtle);
}

.chat-input-container {
  width: 100%;
  display: flex;
  position: relative;
  flex-direction: column;
  border: 1px solid var(--sys-color-neutral-outline);
  border-radius: var(--sys-shape-corner-small);

  &:focus-within {
    outline: 1px solid var(--sys-color-primary);
    border-color: var(--sys-color-primary);
  }

  &.disabled {
    background-color: var(--sys-color-state-disabled-container);
    border-color: transparent;

    & .chat-input-disclaimer {
      border-color: var(--sys-color-state-disabled);
    }
  }

  &.single-line-layout {
    flex-direction: row;
    justify-content: space-between;

    .chat-input {
      flex-shrink: 1;
      padding: var(--sys-size-4);
    }

    .chat-input-actions {
      flex-shrink: 0;
      padding-block: 0;
      align-items: flex-end;
      padding-bottom: var(--sys-size-1);
    }
  }

  & .image-input-container {
    margin: var(--sys-size-3) var(--sys-size-4) 0;
    max-width: 100%;
    width: fit-content;
    position: relative;

    devtools-button {
      position: absolute;
      top: calc(-1 * var(--sys-size-2));
      right: calc(-1 * var(--sys-size-3));
      border-radius: var(--sys-shape-corner-full);
      border: 1px solid var(--sys-color-neutral-outline);
      background-color: var(--sys-color-cdt-base-container);
    }

    img {
      max-height: var(--sys-size-18);
      max-width: 100%;
      border: 1px solid var(--sys-color-neutral-outline);
      border-radius: var(--sys-shape-corner-small);
    }

    .loading {
      margin: var(--sys-size-4) 0;
      display: inline-flex;
      justify-content: center;
      align-items: center;
      height: var(--sys-size-18);
      width: var(--sys-size-19);
      background-color: var(--sys-color-surface3);
      border-radius: var(--sys-shape-corner-small);
      border: 1px solid var(--sys-color-neutral-outline);

      devtools-spinner {
        color: var(--sys-color-state-disabled);
      }
    }
  }

  & .chat-input-disclaimer-container {
    display: flex;
    align-items: center;
    padding-right: var(--sys-size-3);
    flex-shrink: 0;
  }

  & .chat-input-disclaimer {
    display: flex;
    justify-content: center;
    align-items: center;
    font: var(--sys-typescale-body5-regular);
    border-right: 1px solid var(--sys-color-divider);
    padding-right: 8px;

    &.hide-divider {
      border-right: none;
    }
  }

  /*
    Hide the inline disclaimer on narrow widths (< 400px) because space is limited
    and the disclaimer is shown in the footer instead for this case.
  */
  @container --chat-ui-container (width < 400px) {
    & .chat-input-disclaimer-container {
      display: none;
    }
  }
}

.chat-input {
  scrollbar-width: none;
  field-sizing: content;
  resize: none;
  width: 100%;
  max-height: 84px; /* 4 rows */
  border: 0;
  border-radius: var(--sys-shape-corner-small);
  font: var(--sys-typescale-body4-regular);
  line-height: 18px;
  min-height: var(--sys-size-11);
  color: var(--sys-color-on-surface);
  background-color: var(--sys-color-cdt-base-container);
  padding: var(--sys-size-4) var(--sys-size-4) var(--sys-size-3)
    var(--sys-size-4);

  &::placeholder {
    opacity: 60%;
  }

  &:focus-visible {
    outline: 0;
  }

  &:disabled {
    color: var(--sys-color-state-disabled);
    background-color: transparent;
    border-color: transparent;

    &::placeholder {
      color: var(--sys-color-on-surface-subtle);
      opacity: 100%;
    }
  }
}

.chat-input-actions {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  padding-left: var(--sys-size-4);
  padding-right: var(--sys-size-2);
  gap: var(--sys-size-6);
  padding-bottom: var(--sys-size-2);

  & .chat-input-actions-left {
    flex: 1 1 0;
    min-width: 0;
  }

  & .chat-input-actions-right {
    flex-shrink: 0;
    display: flex;

    & .start-new-chat-button {
      padding-bottom: var(--sys-size-2);
      padding-right: var(--sys-size-3);
    }
  }
}

.chat-inline-button {
  padding-left: 3px;
}

.select-element {
  display: flex;
  gap: var(--sys-size-3);
  align-items: center;

  .resource-link,
  .resource-task {
    cursor: pointer;
    padding: var(--sys-size-2) var(--sys-size-3);
    font: var(--sys-typescale-body5-regular);
    border: var(--sys-size-1) solid var(--sys-color-divider);
    border-radius: var(--sys-shape-corner-extra-small);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    /*
      Allow the link/task item to shrink below its intrinsic minimum width in the flex container,
      enabling text-overflow ellipsis to work correctly.
    */
    min-width: 0;
    line-height: 1;

    & .title {
      vertical-align: middle;
      font: var(--sys-typescale-body5-regular);
    }

    &.has-picker-behavior {
      overflow: visible;
    }

    &:focus-visible {
      outline: 2px solid var(--sys-color-state-focus-ring);
    }

    devtools-icon,
    devtools-file-source-icon {
      display: inline-flex;
      vertical-align: middle;
      width: var(--sys-size-7);
      height: var(--sys-size-7);
    }

    /*
      CSS styling for `network-override-marker` is similar to
      https://source.chromium.org/chromium/chromium/src/+/main:third_party/devtools-frontend/src/front_end/panels/network/networkLogView.css;l=379.
      There is a difference in `left` and `top` values to make sure
      it is placed correctly for the network icon in assistance panel.
    */
    .network-override-marker {
      position: relative;
      float: left;
    }

    .network-override-marker::before {
      content: var(--image-file-empty);
      width: var(--sys-size-4);
      height: var(--sys-size-4);
      border-radius: 50%;
      outline: var(--sys-size-1) solid var(--icon-gap-focus-selected);
      left: 11px;
      position: absolute;
      top: 13px;
      z-index: 1;
      background-color: var(--sys-color-purple-bright);
    }

    .image.icon {
      display: inline-flex;
      justify-content: center;
      align-items: center;
      vertical-align: middle;
      margin-right: var(--sys-size-3);

      img {
        max-width: var(--sys-size-7);
        max-height: var(--sys-size-7);
      }
    }
  }

  .resource-link.disabled,
  .resource-task.disabled {
    color: var(--sys-color-state-disabled);
    border-color: var(--sys-color-neutral-outline);
    pointer-events: none;
  }
}

.link {
  color: var(--text-link);
  text-decoration: underline;
  cursor: pointer;
}

button.link {
  border: none;
  background: none;
  font: inherit;

  &:focus-visible {
    outline: var(--sys-size-2) solid var(--sys-color-state-focus-ring);
    outline-offset: 0;
    border-radius: var(--sys-shape-corner-extra-small);
  }
}

.floaty {
  font: var(--sys-typescale-body4);
  color: var(--sys-color-on-surface);
  user-select: none;
  padding: 0;
  margin: 0;
  list-style-type: none;
  display: flex;
  flex-flow: row wrap;
  align-items: flex-end;
  gap: var(--sys-size-2);
  margin-bottom: var(--sys-size-2);

  li {
    background: var(--sys-color-surface3);
    border-radius: var(--sys-shape-corner-small);
    border: 1px solid var(--sys-color-neutral-outline);
    padding: var(--sys-size-2) var(--sys-size-3);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--sys-size-2);
    min-height: var(--sys-size-8);
  }

  .context-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--sys-size-2);
  }

  .open-floaty {
    padding: 0;
    border: none;

    /* To align with other chips */
    margin-bottom: 1px;
  }
}

.chat-input-footer {
  display: flex;
  justify-content: center;
  padding-block: var(--sys-size-3);
  font: var(--sys-typescale-body5-regular);
  border-top: 1px solid var(--sys-color-divider);
  text-wrap: balance;
  text-align: center;
  width: 100%;

  /*
    The footer (for active conversations) is hidden by default on wider screens
    because the disclaimer is shown inline within the chat input actions. Show it only on narrow widths (< 400px).
  */
  &:not(.is-read-only) {
    display: none;
    border: none;

    @container --chat-ui-container (width < 400px) {
      display: flex;
    }
  }
}