body { background-color: #f4f6f9; }
.sidebar .nav-link { border-radius: 8px; }
.sidebar .nav-link:hover, .sidebar .nav-link.active { background-color: #0d6efd; }
.card { border: none; box-shadow: 0 2px 8px rgba(0,0,0,.06); border-radius: 12px; }
.card-stat i { font-size: 2rem; opacity: .8; }
.table thead { background-color: #eef2f7; }
.login-wrapper { min-height: 100vh; display:flex; align-items:center; justify-content:center; background: linear-gradient(135deg,#0d6efd,#0a58ca); }
.login-card { max-width: 420px; width: 100%; border-radius: 16px; }