/* ============================================================
   侧栏
   ============================================================ */

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-base) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  flex-shrink: 0;
}
.sidebar-header .logo {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-md);
  background: var(--color-primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

/* ---------- PC 端隐藏侧栏汉堡菜单 ---------- */
#sidebarToggle {
  display: none;
}

.sidebar-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.character-list-wrapper {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md) var(--spacing-sm);
}
.character-list-wrapper h3 {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  padding: 0 var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.character-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}
.character-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
}
.character-item:hover {
  background: color-mix(in srgb, var(--color-primary) 6%, transparent);
}
.character-item.active {
  background: color-mix(in srgb, var(--color-primary) 8%, transparent);
  border-left-color: var(--color-primary);
}
.character-item .avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  object-fit: cover;
  background: var(--color-border);
  flex-shrink: 0;
}
.character-item .info {
  flex: 1;
  min-width: 0;
}
.character-item .name {
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}
.character-item .desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.character-item .item-actions {
  display: flex;
  gap: 2px;
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.character-item:hover .item-actions {
  opacity: 1;
}
.character-item .item-actions .icon-btn {
  width: 28px;
  height: 28px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
}
.character-item .item-actions .icon-btn:hover {
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 10%, transparent);
}
.character-item .item-actions .delete-btn:hover {
  color: var(--color-danger);
  background: rgba(225, 112, 85, 0.1);
}

.sidebar-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}
.sidebar-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  width: 100%;
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}
.sidebar-btn:hover {
  background: color-mix(in srgb, var(--color-primary) 6%, transparent);
  color: var(--color-primary);
}
.sidebar-btn i {
  width: 20px;
  text-align: center;
  font-size: 1.1rem;
}
.sidebar-btn span {
  flex: 1;
  text-align: left;
}

/* ===== 移动端侧栏底部按钮（确保展开按钮独立成行） ===== */
@media (max-width: 768px) {
  .sidebar-footer {
    display: flex;
    flex-direction: column !important; /* 强制垂直排列 */
    align-items: stretch;
    gap: 0.25rem;
    padding: 0.5rem 0.25rem;
    border-top: 1px solid var(--color-border);
  }

  /* 展开按钮独占一行 */
  .sidebar-footer .expand-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.2rem 0;
    font-size: 1rem;
    color: var(--color-text-muted);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: all 0.15s;
    order: -1; /* 确保它在最上方 */
  }
  .sidebar-footer .expand-toggle:hover {
    color: var(--color-primary);
  }
  .sidebar-footer .expand-toggle i {
    font-size: 1.2rem;
  }

  /* 按钮行 */
  .sidebar-footer .sidebar-btn-row {
    display: flex;
    flex-wrap: nowrap;
    justify-content: space-around;
    gap: 0.2rem;
    padding: 0.1rem 0;
  }

  /* 单个按钮 */
  .sidebar-footer .sidebar-btn-row .sidebar-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    max-width: 64px;
    min-width: 40px;
    padding: 0.3rem 0.1rem;
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    transition: all 0.15s;
    gap: 0.1rem;
    cursor: pointer;
  }
  .sidebar-footer .sidebar-btn-row .sidebar-btn:hover {
    background: color-mix(in srgb, var(--color-primary) 8%, transparent);
    color: var(--color-primary);
  }
  .sidebar-footer .sidebar-btn-row .sidebar-btn:active {
    transform: scale(0.92);
  }
  .sidebar-footer .sidebar-btn-row .sidebar-btn i {
    font-size: 1.4rem;
    line-height: 1.4;
  }
  .sidebar-footer .sidebar-btn-row .sidebar-btn span {
    display: block;
    font-size: 0.55rem;
    line-height: 1.2;
    text-align: center;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  /* 次要行动画 */
  .sidebar-footer .secondary-row {
    animation: expandSlideDown 0.2s ease;
  }
  @keyframes expandSlideDown {
    from {
      opacity: 0;
      transform: translateY(-6px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* ===== 群组卡片样式 ===== */
.character-item .info .name-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  width: 100%;
}

.character-item .info .name {
  flex: 0 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 群组标签 - 右对齐，小巧精致 */
.group-tag {
  display: inline-block;
  flex-shrink: 0;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.55rem;
  font-weight: var(--font-weight-medium);
  padding: 0.05rem 0.5rem;
  border-radius: var(--radius-full);
  line-height: 1.6;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  border: 1px solid rgba(255, 255, 255, 0.15);
  margin-left: auto; /* 确保右对齐 */
}

/* 暗色主题适配 */
[data-theme="dark"] .group-tag {
  background: var(--color-primary-dark);
  color: var(--color-text-primary);
  border-color: rgba(255, 255, 255, 0.08);
}

/* 赛博朋克主题适配 */
[data-theme="cyberpunk"] .group-tag {
  background: var(--color-secondary);
  color: #000;
  border-color: var(--color-primary);
  text-shadow: 0 0 4px rgba(0, 255, 204, 0.3);
}

/* 移动端适配 */
@media (max-width: 768px) {
  .group-tag {
    font-size: 0.45rem;
    padding: 0.02rem 0.3rem;
  }
}

@media (min-width: 769px) {
  #sidebar.collapsed {
    width: var(--sidebar-collapsed);
  }
  #sidebar.collapsed .logo,
  #sidebar.collapsed .character-list-wrapper h3,
  #sidebar.collapsed .character-item .info,
  #sidebar.collapsed .character-item .desc,
  #sidebar.collapsed .sidebar-btn span {
    display: none;
  }
  #sidebar.collapsed .character-item {
    justify-content: center;
    padding: var(--spacing-sm);
  }
  #sidebar.collapsed .sidebar-btn {
    justify-content: center;
  }
}