:root{ --brand-radius:14px; }
body{ background-color:#f6f7f9; }

/* Navbar (стеклянная) */
.app-navbar{
    background:rgba(255,255,255,.85);
    backdrop-filter:blur(8px);
    -webkit-backdrop-filter:blur(8px);
    border:1px solid rgba(0,0,0,.06);
    border-radius:var(--brand-radius);
}
.app-brand{ padding:.4rem .75rem; border-radius:10px; font-weight:600; letter-spacing:.2px; }
.app-tabs .nav-link{ border-radius:10px; padding:.45rem .8rem; transition:.15s ease; }
.app-tabs .nav-link:hover{ background-color:rgba(0,0,0,.04); }
.app-tabs .nav-link.active{ background-color:rgba(13,110,253,.12); color:#0d6efd; font-weight:600; }
.app-shell{ max-width:1200px; }

/* Карточки */
.card-header{
    background:linear-gradient(180deg,rgba(255,255,255,.9),rgba(255,255,255,.85));
    border-bottom:1px solid rgba(0,0,0,.06);
    border-top-left-radius:1rem; border-top-right-radius:1rem;
}
.card-header .title{ font-weight:600; letter-spacing:.2px; }

/* Узкие алерты */
.alert-slim{ padding:.4rem .75rem; border-radius:10px; }