/* ===== Sidebar (desktop) ===== */
.sidebar {
  width: 240px;
  height: 100%;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.sidebar-logo {
  padding: 20px 16px;
  font-size: 20px;
  font-weight: 600;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 8px;
  flex-shrink: 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 150ms ease;
}

.nav-item-primary {
  margin-bottom: 2px;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--accent-light);
  color: var(--accent);
}

.nav-item .badge {
  margin-left: auto;
  background: var(--accent-pink);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: var(--radius-full);
}

/* 채팅 탭 호버 시 "새 대화" 힌트 */
.nav-new-chat-hint {
  margin-left: auto;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-muted);
  opacity: 0;
  transition: opacity 150ms ease;
  pointer-events: none;
}

.nav-item.active:hover .nav-new-chat-hint {
  opacity: 1;
  color: var(--accent);
}

/* 채팅 탭 읽지 않은 메시지 도트 (사이드바) */
.nav-item.has-unread::after {
  content: "";
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-pink);
  flex-shrink: 0;
}

.nav-item.has-unread .nav-new-chat-hint {
  display: none;
}

/* 채팅 탭 읽지 않은 메시지 도트 (모바일 하단) */
.chat-unread-dot {
  width: 8px;
  height: 8px;
  min-width: 8px;
  padding: 0;
  border-radius: 50%;
}

.sidebar-menu-edit-btn {
  outline: none;
  text-decoration: none;
}

/* ===== Session List (sidebar) ===== */
.sidebar-sessions {
  padding: 8px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1;
  overflow: hidden;
}

.sidebar-section-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 8px 8px;
}

.session-search {
  width: 100%;
  padding: 6px 10px;
  margin-bottom: 4px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 12px;
  font-family: var(--font-family);
  outline: none;
  box-sizing: border-box;
}
.session-search:focus {
  border-color: var(--accent);
}
.session-search::placeholder {
  color: var(--text-muted);
}

.session-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  direction: rtl;
}

.session-list > * {
  direction: ltr;
}

.session-load-more {
  padding: 8px;
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
}

.session-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  width: 100%;
  padding: 8px 12px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-family);
  transition: all 150ms ease;
}

.session-item:hover {
  background: var(--bg-hover);
}

.session-item.active {
  background: var(--accent-light);
}

.session-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.session-meta {
  font-size: 11px;
  color: var(--text-muted);
}

.session-summary {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  line-height: 1.3;
}

.session-empty {
  font-size: 12px;
  color: var(--text-muted);
  padding: 12px 8px;
  text-align: center;
}


.sidebar-bottom {
  padding: 8px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-settings-btn {
  outline: none;
  text-decoration: none;
}

/* ===== Avatar Toggle Button ===== */
.avatar-toggle-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  color: var(--text-primary);
}

.avatar-toggle-label {
  margin-left: auto;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--accent-pink);
  color: #fff;
  transition: background 0.2s ease, opacity 0.2s ease;
}

body.avatar-off .avatar-toggle-label {
  background: var(--text-tertiary);
  opacity: 0.6;
}

/* 세션 목록: 에이전트 세션 표시 */
.session-item.session-agent {
  border-left: 3px solid transparent;
  padding-left: 9px;
}
.session-item.session-sori { border-left-color: var(--agent-sori-name); }
.session-item.session-seoyeon { border-left-color: var(--agent-seoyeon-name); }
.session-item.session-jihyun { border-left-color: var(--agent-jihyun-name); }

.session-owner-icon {
  font-size: 12px;
  margin-right: 2px;
}

/* ===== Session Row: 스와이프 삭제 UI ===== */

/* 스와이프 컨테이너: 상대 위치로 삭제 액션 영역 배치 */
.session-row {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
  flex: 0 0 auto;
  width: 100%;
}

/* 뒤에 깔린 빨간 삭제 액션 영역 */
.session-delete-action {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 72px;
  background: #e74c3c;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  opacity: 0;
  transition: opacity 150ms ease;
}

/* 스와이프 진행 중이면 삭제 영역 표시 */
.session-row.swipe-active .session-delete-action {
  opacity: 1;
}

/* .session-item은 row 안에서 전체 너비 */
.session-row .session-item {
  width: 100%;
  position: relative;
  z-index: 1;
}

/* 데스크탑 호버 X 버튼 */
.session-delete-btn {
  display: none;
  position: absolute;
  top: 6px;
  right: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  line-height: 0;
  z-index: 2;
  transition: color 150ms ease, background 150ms ease;
}

.session-delete-btn:hover {
  color: #e74c3c;
  background: rgba(231, 76, 60, 0.1);
}

/* 호버 시 X 버튼 노출 (데스크탑 전용) */
@media (hover: hover) {
  .session-row:hover .session-delete-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  /* 호버 시 타이틀에 오른쪽 여백 확보 (X 버튼과 겹치지 않도록) */
  .session-row:hover .session-item .session-title {
    max-width: calc(100% - 24px);
  }
}

/* Sidebar mobile (drawer) */
@media (max-width: 767px) {
  .sidebar {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 250ms ease;
    box-shadow: none;
  }

  .sidebar.drawer-open {
    transform: translateX(0);
    box-shadow: 4px 0 20px rgba(0,0,0,0.15);
  }
}

/* Sidebar tablet */
@media (min-width: 768px) and (max-width: 1023px) {
  .sidebar { width: 200px; }
}