:root{--sx:#6f3cff;--sx2:#111827}body{background:#f5f7fb;color:#182230}.sidebar{min-height:calc(100vh - 56px);background:#fff;border-right:1px solid #e8ebf2}.sidebar .nav-link{color:#394150;border-radius:.6rem;margin:.15rem 0}.sidebar .nav-link:hover{background:#f0edff;color:#5a2ee8}.card{border:0;box-shadow:0 4px 18px rgba(20,30,60,.06);border-radius:1rem}.stat-card{border-top:3px solid var(--sx)}.btn-primary{background:var(--sx);border-color:var(--sx)}.hero{background:linear-gradient(135deg,#111827,#3b1e82);color:#fff;padding:6rem 0}.badge-soft{background:#efeaff;color:#5b34d6}.chat-box{height:55vh;overflow:auto;background:#fff;border-radius:1rem;padding:1rem}.bubble{max-width:82%;padding:.75rem 1rem;border-radius:1rem;margin:.5rem 0}.bubble.user{margin-left:auto;background:#efeaff}.bubble.bot{background:#f1f5f9}