.app-shell--filechat { overflow: hidden; }

.app-shell--filechat #main-content {
  height: calc(100vh - var(--ui-site-header-h, 76px) - var(--app-status-h));
  min-height: 610px;
  padding: 0;
}

.fc-workspace {
  display: grid;
  grid-template-columns: 286px minmax(0, 1fr);
  width: 100%;
  height: 100%;
  background: var(--app-panel);
}

.fc-sidebar {
  display: flex;
  min-height: 0;
  flex-direction: column;
  border-right: 1px solid var(--app-line);
  background: var(--app-panel-muted);
}

.fc-sidebar__head {
  padding: 22px 20px 18px;
  border-bottom: 1px solid var(--app-line);
}

.fc-sidebar__eyebrow {
  margin: 0 0 5px;
  color: var(--app-blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.fc-sidebar h1 {
  margin: 0;
  font-size: 19px;
  letter-spacing: -.03em;
}

.fc-sidebar__copy {
  margin: 7px 0 0;
  color: var(--app-muted);
  font-size: 12px;
  line-height: 1.55;
}

.fc-sidebar__body {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
  padding: 16px;
  gap: 14px;
}

.fc-attach-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--app-blue);
  border-radius: 6px;
  background: var(--app-blue);
  color: #fff;
  font-size: 13px;
  font-weight: 750;
  cursor: pointer;
}

.fc-sidebar__label {
  color: var(--app-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.fc-files {
  display: flex;
  min-height: 80px;
  flex-direction: column;
  gap: 6px;
}

.fc-files:empty::before {
  content: "첨부된 파일이 없습니다";
  padding: 14px 12px;
  border: 1px dashed var(--app-line-strong);
  border-radius: 6px;
  color: var(--app-muted);
  font-size: 12px;
  text-align: center;
}

.fc-file-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding: 9px 10px;
  border: 1px solid var(--app-line);
  border-radius: 6px;
  background: var(--app-panel);
  color: var(--app-ink);
  font-size: 12px;
  overflow: hidden;
}

.fc-file-chip button {
  width: 24px;
  min-width: 24px;
  min-height: 24px;
  margin-left: auto;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--app-muted);
}

.fc-sidebar__footer { margin-top: auto; }
.fc-sidebar__footer select { min-height: 38px; font-size: 12px; }
.fc-sidebar__footer .secondary { width: 100%; margin-top: 8px; }

.fc-main {
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  background: var(--app-panel);
}

.fc-main__topbar {
  display: flex;
  align-items: center;
  min-height: 52px;
  padding: 0 24px;
  border-bottom: 1px solid var(--app-line);
  gap: 12px;
}

.fc-main__topbar strong { font-size: 13px; }
.fc-main__topbar span { color: var(--app-muted); font-size: 12px; }
.fc-badge { color: var(--app-green); font-weight: 750; }

.fc-chat {
  display: flex;
  min-height: 0;
  flex: 1;
  flex-direction: column;
  gap: 22px;
  padding: 34px max(36px, calc((100% - 820px) / 2));
  overflow-y: auto;
  overscroll-behavior: contain;
}

.fc-msg {
  position: relative;
  width: fit-content;
  max-width: min(760px, 82%);
  color: var(--app-ink);
  font-size: 14px;
  line-height: 1.68;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.fc-msg.ai { align-self: flex-start; padding-left: 46px; }
.fc-msg.ai::before {
  content: "Q";
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 7px;
  background: var(--app-blue);
  color: #fff;
  font-size: 16px;
  font-weight: 800;
}

.fc-msg.user {
  align-self: flex-end;
  padding: 11px 15px;
  border-radius: 14px 14px 4px 14px;
  background: var(--app-blue-soft);
}

.fc-msg.empty {
  align-self: center;
  max-width: 540px;
  margin: auto;
  color: var(--app-muted);
  text-align: center;
}

.fc-msg.loading { color: var(--app-muted); }

.fc-composer {
  width: min(860px, calc(100% - 56px));
  margin: 0 auto;
  padding: 0 0 18px;
}

.fc-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--app-line-strong);
  border-radius: 10px;
  background: var(--app-panel);
  box-shadow: 0 6px 24px color-mix(in srgb, #101828 7%, transparent);
}

.fc-row:focus-within { border-color: var(--app-blue); box-shadow: 0 0 0 3px color-mix(in srgb, var(--app-blue) 14%, transparent); }

.fc-row textarea {
  min-height: 50px;
  max-height: 150px;
  padding: 12px;
  border: 0;
  background: transparent;
  box-shadow: none !important;
  resize: none;
}

.fc-row .btn { width: 78px; height: 46px; }
.fc-hint { margin: 8px 4px 0; color: var(--app-muted); font-size: 10px; text-align: center; }

.app-shell--filechat #gate {
  position: absolute;
  z-index: 5;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
}

@media (max-width: 1100px) {
  .fc-workspace { grid-template-columns: 240px minmax(0, 1fr); }
  .fc-chat { padding-inline: 32px; }
}

@media (max-width: 760px) {
  .app-shell--filechat #main-content { min-height: 0; }
  .fc-workspace {
    grid-template-rows: minmax(250px, 40%) minmax(0, 1fr);
    grid-template-columns: 1fr;
  }
  .fc-sidebar { border-right: 0; border-bottom: 1px solid var(--app-line); overflow-y: auto; }
  .fc-sidebar__head { padding: 16px 14px 12px; }
  .fc-sidebar__body { padding: 12px 14px; }
  .fc-files { min-height: 48px; }
  .fc-main__topbar { min-height: 44px; padding-inline: 14px; }
  .fc-chat { gap: 16px; padding: 20px 14px; }
  .fc-msg { max-width: 94%; font-size: 13px; }
  .fc-msg.ai { padding-left: 40px; }
  .fc-composer { width: calc(100% - 24px); padding-bottom: 10px; }
  .fc-row .btn { width: 64px; }
}