/* ==================== EMAIL GROUPS ==================== */
.email-layout {
  display: flex;
  gap: 16px;
  margin-top: 8px;
}
.email-sidebar {
  flex: 0 0 260px;
  min-width: 240px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.email-main {
  flex: 1;
  min-width: 0;
}
.group-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--border, #e2e8f0);
  border-radius: var(--radius);
  padding: 10px;
  background: var(--surface, #fff);
}
.group-item {
  border: 1px solid var(--border, #e2e8f0);
  border-radius: 8px;
  padding: 10px;
  cursor: pointer;
  background: #fff;
  transition: all .15s;
}
.group-item:hover {
  border-color: var(--accent, var(--accent));
  background: var(--accent-weak);
}
.group-item.is-selected {
  border-color: var(--accent, var(--accent));
  background: var(--accent-weak);
}
.group-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 4px;
}
.group-name {
  font-weight: 700;
  overflow-wrap: anywhere;
}
.group-count {
  font-size: 12px;
  color: var(--muted);
}
.group-actions {
  display: flex;
  gap: 4px;
}
.group-color-btn {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 1px 2px rgba(0,0,0,.15);
  cursor: pointer;
  padding: 0;
}
.group-color-btn.selected {
  border-color: #fff;
  box-shadow: 0 0 0 2px var(--border, #e2e8f0), 0 1px 2px rgba(0,0,0,.15);
}

@media (max-width: 768px) {
  .email-layout {
    flex-direction: column;
  }
  .email-sidebar {
    flex: 1;
    min-width: auto;
    max-height: 300px;
    overflow-y: auto;
  }
}

/* Email sidebar: nhóm luôn trôi theo (sticky) khi cuộn danh sách email,
   để kéo thả email vào nhóm bất cứ lúc nào không cần cuộn lại trên. */
.email-sidebar {
  position: sticky;
  top: 16px;
  align-self: flex-start;
  z-index: 1;
}

/* Email toolbar */
#emailToolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: var(--card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  flex-wrap: wrap;
}

#emailToolbar button {
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 500;
  transition: opacity 0.2s;
}

#emailToolbar .danger {
  margin-left: auto; /* Đẩy nút xóa về bên phải */
}

#emailToolbar .muted {
  color: #596673; /* Sửa lỗi tương phản Lighthouse */
}