:root {
  --bd-chat-accent: var(--primary-color, #6800EA);
  --bd-chat-accent-strong: color-mix(in srgb, var(--bd-chat-accent) 88%, black);
  --bd-chat-accent-soft: color-mix(in srgb, var(--bd-chat-accent) 14%, white);
  --bd-chat-accent-border: color-mix(in srgb, var(--bd-chat-accent) 24%, white);
}

.bd-chat-fab,
.bd-chat-panel,
.bd-chat-layer__backdrop,
.bd-chat-panel__close,
.bd-chat-thread__ghost,
.bd-chat-composer__send,
.bd-chat-room,
.bd-chat-sidebar__search input {
  font: inherit;
}

.bd-chat-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1250;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 68px;
  height: 68px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bd-chat-accent) 0%, var(--bd-chat-accent-strong) 100%);
  color: #ffffff;
  box-shadow: 0 20px 40px color-mix(in srgb, var(--bd-chat-accent) 24%, transparent);
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, opacity 0.18s ease;
}

.bd-chat-fab:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 54px color-mix(in srgb, var(--bd-chat-accent) 30%, transparent);
}

.bd-chat-fab:focus-visible,
.bd-chat-panel__close:focus-visible,
.bd-chat-thread__ghost:focus-visible,
.bd-chat-composer__send:focus-visible,
.bd-chat-sidebar__compose:focus-visible,
.bd-chat-person:focus-visible,
.bd-chat-sidebar__search input:focus-visible {
  outline: 2px solid #0f0f0f;
  outline-offset: 3px;
}

.bd-chat-room:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--bd-chat-accent-border);
}

.bd-chat-fab__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.bd-chat-fab__badge {
  position: absolute;
  top: -4px;
  right: -2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  padding: 0 6px;
  border-radius: 999px;
  background: #e53935;
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 700;
}

.bd-chat-layer {
  position: fixed;
  inset: 0;
  z-index: 1240;
}

.bd-chat-layer[hidden] {
  display: none !important;
}

.bd-chat-layer__backdrop {
  position: absolute;
  inset: 0;
  border: 0;
  background: rgba(15, 15, 15, 0.16);
  opacity: 0;
  transition: opacity 0.22s ease;
}

.bd-chat-panel {
  position: absolute;
  right: 24px;
  bottom: 100px;
  width: min(780px, calc(100vw - 40px));
  height: min(620px, calc(100vh - 104px));
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 28px 72px rgba(15, 15, 15, 0.2);
  overflow: hidden;
  opacity: 0;
  transform: translateY(20px) scale(0.98);
  transform-origin: bottom right;
  transition: opacity 0.24s ease, transform 0.24s ease;
  backdrop-filter: blur(18px);
}

.bd-chat-layer.is-open .bd-chat-layer__backdrop,
.bd-chat-layer.is-open .bd-chat-panel {
  opacity: 1;
}

.bd-chat-layer.is-open .bd-chat-panel {
  transform: translateY(0) scale(1);
}

.bd-chat-panel__shell {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.bd-chat-panel__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: color-mix(in srgb, var(--bd-chat-accent) 8%, white);
  color: var(--bd-chat-accent);
  cursor: pointer;
  flex: 0 0 40px;
}

.bd-chat-panel__body {
  display: grid;
  grid-template-columns: minmax(250px, 286px) minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  min-height: 0;
  flex: 1 1 0;
  overflow: hidden;
}

.bd-chat-sidebar {
  display: grid;
  align-content: start;
  min-width: 0;
  min-height: 0;
  padding: 16px;
  border-right: 1px solid rgba(15, 15, 15, 0.08);
  background: #fbfbfb;
  overflow: hidden;
}

.bd-chat-sidebar__topbar {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.bd-chat-sidebar__title {
  margin: 0;
  font-size: 2rem;
  line-height: 1.08;
}

.bd-chat-sidebar__compose {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  min-height: 44px;
  margin-bottom: 12px;
  border: 0;
  border-radius: 16px;
  background: var(--bd-chat-accent);
  color: #ffffff;
  cursor: pointer;
  font-size: 1.2rem;
  font-weight: 700;
}

.bd-chat-sidebar__compose:hover {
  background: var(--bd-chat-accent-strong);
}

.bd-chat-sidebar__compose-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}

.bd-chat-sidebar__people {
  display: grid;
  gap: 10px;
  margin-bottom: 12px;
  padding: 12px;
  border-radius: 16px;
  background: linear-gradient(180deg, var(--bd-chat-accent-soft), rgba(255, 255, 255, 0.96));
  border: 1px solid var(--bd-chat-accent-border);
  overflow: hidden;
  animation: chatPeopleSlideDown 0.25s ease forwards;
}

.bd-chat-sidebar__people.is-closing {
  animation: chatPeopleSlideUp 0.2s ease forwards;
}

@keyframes chatPeopleSlideDown {
  from {
    opacity: 0;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-bottom: 0;
  }
  to {
    opacity: 1;
    max-height: 300px;
    padding-top: 12px;
    padding-bottom: 12px;
    margin-bottom: 12px;
  }
}

@keyframes chatPeopleSlideUp {
  from {
    opacity: 1;
    max-height: 300px;
    padding-top: 12px;
    padding-bottom: 12px;
    margin-bottom: 12px;
  }
  to {
    opacity: 0;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-bottom: 0;
  }
}

.bd-chat-sidebar__search {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  margin-bottom: 14px;
  padding: 0 14px;
  border: 1px solid rgba(15, 15, 15, 0.08);
  border-radius: 18px;
  background: #ffffff;
  color: #6a6a6a;
}

.bd-chat-sidebar__search--people {
  margin-bottom: 0;
}

.bd-chat-sidebar__search input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: #111111;
}

.bd-chat-sidebar__people-list,
.bd-chat-sidebar__list {
  display: grid;
  gap: 10px;
  min-height: 0;
}

.bd-chat-sidebar__list {
  overflow-y: auto;
  overflow-x: hidden;
}

.bd-chat-person {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  width: 100%;
  padding: 12px 10px;
  border: 0;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  text-align: left;
}

.bd-chat-person:hover {
  background: #ffffff;
}

.bd-chat-person__avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--bd-chat-accent), var(--bd-chat-accent-strong));
  color: #ffffff;
  font-weight: 700;
}

.bd-chat-person__name {
  display: block;
  font-size: 1.18rem;
  font-weight: 700;
}

.bd-chat-person__meta {
  display: block;
  margin-top: 4px;
  color: #666666;
  font-size: 1.05rem;
}

.bd-chat-room {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  width: 100%;
  padding: 12px;
  border: 0;
  border-radius: 16px;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background 0.16s ease, box-shadow 0.16s ease;
}

.bd-chat-room:hover {
  background: #ffffff;
}

.bd-chat-room.is-active {
  background: linear-gradient(135deg, color-mix(in srgb, var(--bd-chat-accent) 16%, white), color-mix(in srgb, var(--bd-chat-accent) 8%, white));
}

.bd-chat-room__avatar,
.bd-chat-thread__avatar,
.bd-chat-thread__empty-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: 700;
}

.bd-chat-room__avatar,
.bd-chat-thread__avatar {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--bd-chat-accent), var(--bd-chat-accent-strong));
  color: #ffffff;
}

.bd-chat-room__meta {
  min-width: 0;
}

.bd-chat-room__name,
.bd-chat-thread__identity strong {
  display: block;
  font-size: 1.05rem;
  font-weight: 700;
}

.bd-chat-room__preview,
.bd-chat-thread__identity span {
  display: block;
  margin-top: 4px;
  color: #666666;
  font-size: 0.95rem;
  line-height: 1.45;
}

.bd-chat-room__preview {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bd-chat-room__time {
  align-self: start;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
  color: #888888;
  font-size: 1rem;
  font-weight: 600;
}

.bd-chat-room__unread {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 999px;
  background: #e53935;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1;
}

.bd-chat-room.has-unread .bd-chat-room__name {
  font-weight: 800;
}

.bd-chat-room.has-unread .bd-chat-room__preview {
  color: #222;
  font-weight: 600;
}

.bd-chat-thread {
  min-width: 0;
  min-height: 0;
  background: #ffffff;
  overflow: hidden;
}

.bd-chat-thread__empty,
.bd-chat-thread__detail {
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
}

.bd-chat-thread__empty {
  display: grid;
  place-content: center;
  gap: 12px;
  padding: 28px 24px;
  text-align: center;
}

.bd-chat-thread__empty-mark {
  width: 72px;
  height: 72px;
  margin: 0 auto 4px;
  object-fit: contain;
  background: none;
}

.bd-chat-thread__empty h3 {
  margin: 0;
  font-size: 2rem;
}

.bd-chat-thread__empty p {
  margin: 0;
  max-width: 42ch;
  color: #666666;
  font-size: 1.2rem;
  line-height: 1.6;
}

.bd-chat-thread__detail {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  height: 100%;
  min-height: 0;
  overflow: hidden;
}

.bd-chat-thread__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(15, 15, 15, 0.08);
}

.bd-chat-thread__back {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: color-mix(in srgb, var(--bd-chat-accent) 8%, white);
  color: var(--bd-chat-accent);
  cursor: pointer;
  flex-shrink: 0;
}

.bd-chat-thread__identity {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.bd-chat-thread__ghost {
  min-height: 34px;
  padding: 0 14px;
  border: 1px solid var(--bd-chat-accent-border);
  border-radius: 999px;
  background: #ffffff;
  color: var(--bd-chat-accent);
  cursor: pointer;
}

.bd-chat-thread__messages {
  display: grid;
  align-content: start;
  gap: 14px;
  min-width: 0;
  min-height: 0;
  padding: 18px 20px;
  overflow-x: hidden;
  overflow-y: auto;
  background:
    radial-gradient(circle at top right, color-mix(in srgb, var(--bd-chat-accent) 10%, transparent), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, #fcfcfc 100%);
}

.bd-chat-bubble {
  display: grid;
  gap: 6px;
  max-width: min(72%, 420px);
}

.bd-chat-bubble--self {
  justify-self: end;
}

.bd-chat-bubble__label {
  font-size: 0.82rem;
  font-weight: 700;
  color: #8b8b8b;
}

.bd-chat-bubble__body {
  padding: 13px 15px;
  border-radius: 18px;
  background: #d9d9dc;
  color: #111111;
  font-size: 0.99rem;
  line-height: 1.55;
}

.bd-chat-bubble--self .bd-chat-bubble__body {
  background: var(--bd-chat-accent);
  color: #ffffff;
}

.bd-chat-bubble__row {
  display: flex;
  align-items: flex-end;
  gap: 4px;
}

.bd-chat-bubble--self .bd-chat-bubble__row {
  flex-direction: row-reverse;
}

.bd-chat-bubble__actions {
  display: flex;
  align-items: center;
  gap: 2px;
  opacity: 0;
  transition: opacity 0.15s ease;
  flex-shrink: 0;
}

.bd-chat-bubble__row:hover .bd-chat-bubble__actions,
.bd-chat-bubble__actions.has-liked {
  opacity: 1;
}

.bd-chat-bubble__action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.05);
  color: #999;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.bd-chat-bubble__action:hover {
  background: rgba(0, 0, 0, 0.10);
  transform: scale(1.15);
}

.bd-chat-bubble__action--like:hover,
.bd-chat-bubble__action--like.is-liked {
  color: #e53935;
}

.bd-chat-bubble__action--like.is-liked {
  background: rgba(229, 57, 53, 0.10);
}

.bd-chat-bubble__action--delete:hover {
  color: #666;
}

.bd-chat-bubble__action-count {
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1;
}

.bd-chat-bubble__actions.has-liked .bd-chat-bubble__action--delete {
  opacity: 0;
  transition: opacity 0.15s ease;
}

.bd-chat-bubble__actions.has-liked:hover .bd-chat-bubble__action--delete {
  opacity: 1;
}

/* ── long-press modal (mobile) ── */

.bd-chat-msg-modal {
  position: absolute;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  background: rgba(0, 0, 0, 0);
  transition: background 0.2s ease;
}

.bd-chat-msg-modal.is-open {
  background: rgba(0, 0, 0, 0.25);
}

.bd-chat-msg-modal__sheet {
  width: 100%;
  max-width: 400px;
  padding: 8px 12px calc(env(safe-area-inset-bottom, 8px) + 8px);
  border-radius: 18px 18px 0 0;
  background: #fff;
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.12);
  transform: translateY(100%);
  transition: transform 0.25s cubic-bezier(0.32, 0.72, 0, 1);
}

.bd-chat-msg-modal.is-open .bd-chat-msg-modal__sheet {
  transform: translateY(0);
}

.bd-chat-msg-modal__preview {
  padding: 12px 14px 10px;
  margin-bottom: 4px;
  font-size: 0.88rem;
  color: #888;
  line-height: 1.4;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.bd-chat-msg-modal__btn {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px;
  border: 0;
  border-radius: 14px;
  background: transparent;
  color: #222;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.12s ease;
  -webkit-tap-highlight-color: transparent;
}

.bd-chat-msg-modal__btn:active {
  background: rgba(0, 0, 0, 0.05);
}

.bd-chat-msg-modal__btn.is-liked {
  color: #e53935;
}

.bd-chat-msg-modal__btn--danger {
  color: #e53935;
}

.bd-chat-msg-modal__btn--cancel {
  justify-content: center;
  margin-top: 4px;
  color: #888;
  font-weight: 500;
}

/* ── 삭제 확인 모달 ── */
.bd-chat-delete-confirm {
  position: absolute;
  inset: 0;
  z-index: 110;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  transition: background 0.2s;
}

.bd-chat-delete-confirm.is-open {
  background: rgba(0, 0, 0, 0.2);
}

.bd-chat-delete-confirm__dialog {
  background: #fff;
  border-radius: 14px;
  padding: 22px 24px 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  text-align: center;
  min-width: 220px;
  transform: scale(0.9);
  opacity: 0;
  transition: transform 0.2s, opacity 0.2s;
}

.bd-chat-delete-confirm.is-open .bd-chat-delete-confirm__dialog {
  transform: scale(1);
  opacity: 1;
}

.bd-chat-delete-confirm__text {
  font-size: 0.95rem;
  font-weight: 600;
  color: #222;
  margin: 0 0 18px;
}

.bd-chat-delete-confirm__actions {
  display: flex;
  gap: 8px;
}

.bd-chat-delete-confirm__btn {
  flex: 1;
  padding: 9px 0;
  border: none;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.bd-chat-delete-confirm__btn--cancel {
  background: #f0f0f0;
  color: #555;
}

.bd-chat-delete-confirm__btn--cancel:hover {
  background: #e4e4e4;
}

.bd-chat-delete-confirm__btn--confirm {
  background: #e53935;
  color: #fff;
}

.bd-chat-delete-confirm__btn--confirm:hover {
  background: #c62828;
}

/* touch device: hide inline hover actions */
@media (hover: none) and (pointer: coarse) {
  .bd-chat-bubble__actions {
    display: none !important;
  }
}

.bd-chat-composer {
  display: grid;
  padding: 14px 20px 18px;
  border-top: 1px solid rgba(15, 15, 15, 0.08);
  background: #ffffff;
}

.bd-chat-composer__controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

.bd-chat-composer__field {
  display: flex;
  align-items: center;
  min-height: 46px;
  padding: 0 15px;
  border-radius: 16px;
  background: #f5f5f7;
  border: 1px solid transparent;
}

.bd-chat-composer__field input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: #111111;
}

.bd-chat-composer__field:focus-within {
  border-color: var(--bd-chat-accent-border);
  background: #ffffff;
}

.bd-chat-composer__send {
  min-width: 82px;
  min-height: 46px;
  padding: 0 18px;
  border: 0;
  border-radius: 16px;
  background: var(--bd-chat-accent);
  color: #ffffff;
  cursor: pointer;
  font-weight: 700;
}

.bd-chat-composer__send:hover {
  background: var(--bd-chat-accent-strong);
}

body[data-bd-chat-open="true"] .bd-chat-fab {
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
}

@media (max-width: 900px) {
  .bd-chat-fab {
    right: 18px;
    bottom: 18px;
    width: 62px;
    height: 62px;
  }

  .bd-chat-panel {
    right: 16px;
    left: 16px;
    width: auto;
    height: min(600px, calc(100vh - 92px));
  }

  .bd-chat-panel__body {
    grid-template-columns: 1fr;
    grid-template-rows: auto minmax(0, 1fr);
  }

  .bd-chat-sidebar {
    max-height: 220px;
    padding-bottom: 12px;
    border-right: 0;
    border-bottom: 1px solid rgba(15, 15, 15, 0.08);
    overflow-y: auto;
  }

  .bd-chat-sidebar__list {
    grid-auto-flow: row;
    overflow-y: auto;
    padding-bottom: 4px;
  }

  .bd-chat-sidebar__people-list {
    grid-auto-flow: row;
    overflow-y: auto;
  }
}

@media (max-width: 640px) {
  .bd-chat-fab {
    width: 58px;
    height: 58px;
  }

  .bd-chat-panel {
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 0;
    transform-origin: bottom center;
  }

  /* 모바일: 사이드바 전체 표시, 스레드 숨김 */
  .bd-chat-panel__body {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
  }

  .bd-chat-sidebar {
    max-height: none;
    height: 100%;
    overflow-y: auto;
    border-bottom: 0;
  }

  .bd-chat-thread {
    display: none;
  }

  /* 대화 선택 시: 사이드바 숨기고 스레드 표시 */
  .bd-chat-panel__body.is-thread-open .bd-chat-sidebar {
    display: none;
  }

  .bd-chat-panel__body.is-thread-open .bd-chat-thread {
    display: block;
  }

  /* 뒤로가기 버튼 표시 */
  .bd-chat-thread__back {
    display: inline-flex;
  }

  .bd-chat-sidebar__topbar {
    margin-bottom: 8px;
    align-items: center;
  }

  .bd-chat-sidebar__compose {
    min-height: 38px;
    margin-bottom: 8px;
    font-size: 1.1rem;
  }

  .bd-chat-thread__header,
  .bd-chat-thread__messages,
  .bd-chat-composer {
    padding-left: 14px;
    padding-right: 14px;
  }

  .bd-chat-thread__header {
    padding-top: 12px;
    padding-bottom: 12px;
    gap: 10px;
  }

  .bd-chat-composer {
    padding: 10px 14px 14px;
  }

  .bd-chat-bubble {
    max-width: 86%;
  }
}