Blended Trauma-Focused Cognitive Behavioral Therapy With Compassion

Brief Summary The goal of this clinical trial is to evaluate the feasibility and acceptability of a blended (mHealth) Trauma-Focused Cognitive Behavioral Therapy with Compassion (bTF-CBT-C) for adolescents with post-traumatic stress disorder (PTSD) in routine child and adolescent psychiatric services in northern Sweden. The main questions it aims to answer are: * Is bTF-CBT-C feasible to deliver in routine care, as indicated by recruitment, retention, adherence to sessions and app modules, data completeness, and adverse events? * Is bTF-CBT-C acceptable to adolescents, caregivers, and therapists, as indicated by satisfaction, therapeutic alliance, digital treatment evaluation, and qualitative interviews? Researchers will compare bTF-CBT-C to standard TF-CBT to explore whether the blended format shows similar or potentially improved patterns in clinical outcomes (e.g., PTSD symptoms, emotion regulation, and self-compassion) and to estimate variability needed to plan a future non-inferiority trial. Participants will: * Complete eligibility screening and baseline assessments, including a diagnostic interview for PTSD. * Be randomized to either bTF-CBT-C or standard TF-CBT. * Receive trauma-focused treatment over time, with caregiver involvement in both groups. * In the bTF-CBT-C group, use a secure mobile app for stabilization modules and exercises, together with therapist-led video sessions and selected in-person meetings. * Complete assessments at baseline, after stabilization, post-treatment, and at 6-month follow-up, and provide feedback about their experiences (questionnaires and interviews).